JP2001219746A - Glass run - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the ease of insertion of a channel part into a sash and the improvement of a fitting force compatible with the sealing property and resistance to fatigue of a seal lip part and prevent the occurrence of sealing breakage even if a lip part slide member is formed on a surface of the seal lip part. SOLUTION: A glass run 1 is formed by extrusion-molding in such a way that the channel part 4 is formed by TPO having spring hardness Hs of 70 deg. to 90 deg. (JIS A), the seal lip part 5 is formed by TPO having spring hardness Hs of 50 deg. to 70 deg. (JIS A), a base part slide member 7 is formed by TPO having Shore hardness D of 45 deg. to 60 deg., and the lip part slide member 8 is formed by TPO having Shore hardness of 30 deg. to 45 deg.. A boundary between the seal lip part 5 and the lip part slide member 8 is formed wavy and is laminated in layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass run which guides the movement of a glass by slidingly contacting the outer periphery of the moving glass and seals the space between the glass and the glass run.

[0002]

2. Description of the Related Art FIGS. 7 and 8 and FIGS.
2 shows two types of conventional glass runs 51 and 61 which are attached to a door sash 21 of an automobile and seal an outer peripheral edge of a door glass 22 (see FIG. 3). Each of the glass runs 51, 61 has a channel portion 5 having a substantially U-shaped cross section including base portions 52, 62 and two side walls 53, 63.
4, 64, and two seal lip portions 55, 6 extending into the channel portions 54, 64 from the tips of the side walls 53, 63.
5 is provided.

If the channel portions 54 and 64 are not moderately hard, the ease of insertion into the door sash 21 is reduced (the side wall portions 53 and 63 deflect during insertion, making it difficult to insert deep into the door sash 21). The fitting force due to the elastic contact of the both ends of the bases 52 and 62 with the inner surface of the door sash 21 is reduced. On the other hand, if the sealing lip portions 55 and 65 are not appropriately soft, the sealing property and the sag resistance are reduced.
The choice of material is important. Further, since the outer peripheral edge end surfaces of the door glass 22 are in sliding contact with the surfaces of the base portions 52, 62 and the outer peripheral surfaces of the door glass 22 are in sliding contact with the surfaces of the seal lip portions 55, 65, both surfaces are worn. It is necessary to prevent this and improve the durability.

The glass run 51 shown in FIGS. 7 and 8 is made of EPDM.
The channel portion 54 and the seal lip portion 55 have a spring hardness Hs of 70 ° to 9 °.
Each piece is integrally extruded to a predetermined thickness with EPDM solid rubber of 0 ° (JIS A) and vulcanized and cured, and then a flocking 57 is applied to the surface of the base 52 via an adhesive layer.
Spring hardness Hs 90 ° on the surface of the seal lip 55
(JIS A) Thickness 5 of polyurethane resin
A sliding film 58 of about 0 μm is formed by coating.

The glass run 61 shown in FIGS. 9 and 10 is made of a thermoplastic elastomer (hereinafter, referred to as TPE). The channel portion 64 and the seal lip portion 65 have a spring hardness Hs of 70 ° to 90 ° ( An olefinic TPE (hereinafter referred to as TPO) according to JIS A) having a thickness of about 1 to
At the same time as being extruded to a thickness of 2 mm, a base sliding member 67 is extruded on the surface of the base 62 to a thickness of about 50 μm to about 1 mm with a polyethylene resin having a Shore hardness D of 30 ° to 45 °. A lip sliding member 68 is formed by extrusion molding of a polyethylene resin having a Shore hardness D of 30 ° to 45 ° on the surface of the sheet.

[0006]

The glass run 51 shown in FIGS. 7 and 8 is made of EPDM solid rubber having mechanical properties (especially, elasticity, hysteresis, etc.) which are favorable for the glass run. Even if EPDM solid rubber of the same hardness is used for the seal lip portion 55 and the seal lip portion 55, the channel portion 54 can be easily inserted into the door sash 21 and the fitting force can be improved. And can be made compatible. However, there is a problem that the number of manufacturing steps such as a rubber vulcanizing step and a flocking step is large, and the cost is increased. Also,
In order to make the door sash flush with the door glass, if the seal lip portion inside the vehicle is formed long, EP
Even DM solid rubber has not had sufficient sag resistance after long-term use.

The glass run 61 shown in FIGS. 9 and 10 is made of TPO.
The glass run 51 shown in FIGS.
Rather, the number of manufacturing steps is small, and the cost can be reduced. However, since the mechanical properties (particularly, elasticity, hysteresis, etc.) of TPO are not comparable to those of EPDM solid rubber at this time, the TPO having the same hardness is used for the channel portion 64 and the seal lip portion 65, and In order to achieve both the ease of insertion into the door sash 21 and the improvement of the fitting force, and the sealing property and the set resistance of the seal lip portion 65, the elasticity of the seal lip portion 65 tends to be insufficient.
Further, if the wear resistance is to be ensured by using a polyethylene resin having the same hardness as the base sliding member 67 and the lip sliding member 68, the base sliding member 67 with which the door glass 22 is in strong sliding contact. Therefore, it is necessary to use a hard polyethylene resin, so that the lip sliding member 68 becomes harder than necessary.
In this way, when the lip sliding member 68 that is harder than necessary is formed on the surface of the seal lip 65 that has a lack of elasticity,
There is a possibility that the seal lip portion 65 is deformed or the followability to the door glass 22 is reduced, so that the seal is broken. Further, when the hard lip sliding member 68 is formed on the surface of the seal lip portion 65, when the door sash is curved at a corner or the like, the followability to the corner shape is deteriorated. Fine bending wrinkles may be formed, resulting in a decrease in sealing performance, and a decrease in bonding force in a boundary region between the seal lip portion 65 and the lip portion sliding member 68. Further, if the seal lip portion 65 and the lip portion sliding member 68 are formed of a relatively hard material, it is not possible to prevent the occurrence of rattling sound of the glass when the door is closed in the half-closed state of the door glass. Was.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, reduce the number of manufacturing steps, reduce the cost, improve the ease of insertion of the channel portion into the sash and the fitting force, and the sealing property of the seal lip portion. And the sag resistance can be easily achieved, and even if the lip sliding material is formed on the surface of the seal lip, the seal is not broken or the joining force with the seal lip is not reduced. It is to provide a glass run that can be performed. Another object of the present invention is to provide a glass run that can prevent rattling of the door glass when the door is closed.

[0009]

SUMMARY OF THE INVENTION A first aspect of the present invention provides a channel portion including a base portion and a side wall portion, a seal lip portion extending from the side wall portion to the inside of the channel portion, and a base portion coated on the surface of the base portion. Part sliding material and a lip sliding material coated on the surface of the seal lip part, and the channel part and the seal lip part have a spring hardness Hs of 60 ° to 8 °.
0 ° (JISA) rubber or TPE, the base sliding material is TPE or resin having a Shore hardness of D45 ° to 60 °, and the lip sliding material is TPE or resin having a Shore hardness of D30 ° to 45 ° ( A glass run formed by extrusion molding, wherein at least the boundary between the seal lip and the lip sliding material is formed in a wavy shape. It is characterized by being laminated.

In some cases, the base sliding material and the lip sliding material coincide with each other in numerical value of the Shore hardness (D45 °). 10 is different from the conventional example of FIG.

In the first invention, the material of the channel portion and the seal lip portion is preferably TPE rather than rubber, and has a hardness of 70 ° to 80 ° in terms of spring hardness Hs (JIS).
A) is more preferred. The hardness of the TPE or resin of the base sliding material is more preferably D50 ° to 60 ° in Shore hardness D. The material of the lip sliding material is preferably TPE, and its hardness is more preferably 30 ° to 40 ° in Shore hardness D. That is, it is preferable that the base portion sliding material swings harder and the lip portion sliding material softens, respectively. And, in the boundary region in the longitudinal section between the seal lip and the lip sliding material, the seal lip is formed in a wavy shape, the joint area between them is increased, and a portion required to be bent, for example, the seal lip and the side wall. It is preferable that the lip sliding material is set so as to be thin at the joint portion and thick at the portion where the contact with the door glass is expected.

According to a second aspect of the present invention, there is provided a channel portion including a base portion and a side wall portion, a seal lip portion extending from the side wall portion,
A base portion sliding material coated on the surface of the base portion, and a lip portion sliding material coated on the surface of the seal lip portion, and the channel portion has a spring hardness Hs of 70 ° to 90 ° (JIS).
A) Rubber or TPE whose seal lip has a spring hardness Hs of 50 ° to 70 ° (JIS A) or TPE
The base sliding material is made of PE (having a different compounding ratio from rubber or TPE in the channel portion) and has a Shore hardness of D45.
TPE or resin with a degree of 60 ° to 60 ° and a lip sliding material with a Shore hardness of 30 ° to 45 ° DPE or resin (the compounding ratio of the material is different from the TPE or resin of the base sliding material)
A glass run formed by extrusion molding, wherein at least the boundary between the seal lip and the lip sliding material is formed in a wavy shape and laminated.

In the same manner as above, the channel portion and the seal lip portion coincide with each other by the value of the spring hardness (Hs
70 °) and a case where the base sliding material and the lip sliding material coincide with each other in the numerical value of the Shore hardness (D45 °). Even in such a case, the mixing ratio of the materials is different.

In the second aspect, the material of the channel portion is preferably TPE rather than rubber, and the hardness thereof is more preferably 75 to 85 ° (JIS A) in terms of spring hardness Hs. The material of the seal lip is also preferably TPE rather than rubber, and its hardness is 50 ° to 65 ° in terms of spring hardness Hs.
(JIS A) is more preferred. TP for base sliding material
The hardness of E or the resin is more preferably 50 ° to 60 ° in Shore hardness D. The material of the lip sliding material is preferably TPE, and its hardness is more preferably 30 ° to 40 ° in Shore hardness D. That is, it is preferable that the base portion sliding material swings harder and the lip portion sliding material softens, respectively.
And, in the boundary region in the longitudinal section between the seal lip and the lip sliding material, the seal lip is formed in a wavy shape, the joint area between them is increased, and a portion required to be bent, for example, the seal lip and the side wall. It is preferable that the lip sliding material is set so as to be thin at the joint portion and thick at the portion where the contact with the door glass is expected.

In each of the first and second inventions, the TPE of the channel portion and the seal lip portion is not particularly limited, but is preferably an olefin (TPO). The TPE of the base sliding material and the lip sliding material is not particularly limited,
Olefin (TPO) or styrene is preferred. The resin of the base portion sliding material and the lip portion sliding material is not particularly limited, but is a resin compatible with the channel portion and the seal lip portion. Resins are preferred, and even in this case, polyethylene is particularly preferred.

In the third aspect of the invention, the boundary region in the longitudinal section between the base portion and the base portion sliding member is formed in a wavy shape in the same manner as the boundary region between the seal lip portion and the lip portion sliding member. The area has been increased. In addition, the corrugated formation in each boundary area can be formed at the time of extrusion molding, and simultaneous extrusion (coextrusion) formation is a preferable method.

According to a fourth aspect of the present invention, there is provided a channel portion including a base portion and a side wall portion, a seal lip portion extending from the side wall portion to the inside of the channel portion, and a base portion sliding material coated on the surface of the base portion. A glass run formed by extrusion molding of solid rubber or solid TPE having a spring hardness Hs of 70 ° to 90 ° (JIS A), wherein at least a back surface of the seal lip inside the vehicle is provided. A sponge elasticity assisting portion is formed between the side lip base and the inner side wall portion of the channel portion.

In the fourth aspect, the material of the channel portion is preferably EPDM solid rubber, and the hardness thereof is more preferably Hs 70 ° to 80 ° (JIS A) in terms of spring hardness. The seal lip is preferably made of the same material as the channel from the viewpoint of continuous integration with the channel. The material of the sponge elastic auxiliary portion may be a TPO foam (sponge), but EPDM sponge rubber is preferable.

According to a fifth aspect of the present invention, in addition to the fourth aspect, the material of the base portion sliding material is 45 ° in Shore hardness D type.
６０60 ° TPE or resin, more preferably about 55 ° TPO, and the material of the seal lip is solid rubber or solid TPE having a spring hardness Hs of 50 ° to 70 ° (JIS A). Further, about 70 ° EPDM solid rubber is preferred from the viewpoint of sag resistance. In this case, the material of the sponge elastic auxiliary portion is EP
When DM sponge rubber is used, since both are the same type of material (the SP values are the same or close), the bonding strength at the bonding surface of both can be strengthened.

According to a sixth aspect of the present invention, there is provided a channel portion including a base portion and a side wall portion, and a seal lip portion extending from the free end of the side wall portion to the inside of the channel portion, wherein the channel portion and the seal lip portion have a spring hardness. Hs 70 ° to 90 °
(JIS A) Solid rubber is formed integrally by extrusion molding, and a sponge is formed between at least a seal lip portion on the back side of the seal lip on the vehicle interior side and a channel inner side wall portion of the channel portion. A glass run on which an elastic auxiliary portion is formed, wherein a boundary between the sponge elastic auxiliary portion and the seal lip portion is laminated so that the contact area thereof is increased by unevenness.

In the sixth aspect, the boundary between the sponge elastic auxiliary portion and the seal lip portion is uneven (including a wavy shape).
To increase the contact area. As described above, the material of the seal lip portion is an EPDM having a spring hardness Hs of 70 ° to 80 ° (JIS A).
Solid rubber is preferable, and as a material of the sponge elastic auxiliary portion, a TPO foam (sponge) may be used.
DM sponge rubber is preferred.

In the seventh invention, in addition to the sixth invention, a base sliding material layer is formed on the surface of the base portion, and a lip sliding material layer is formed on the surface of the seal lip. .
The sliding material layer can be formed by applying a urethane coating or pasting a polyethylene sheet as in the related art, but is preferably formed by co-extrusion of TPO. When the channel portion, the seal lip portion, the lip sliding member, and the base sliding member are formed of TPO, it is preferable that the sponge elastic auxiliary portion is also formed of TPO.

In the eighth invention, in addition to the seventh invention, the boundary between the seal lip portion and the lip sliding material layer is formed in a wavy shape, the contact area thereof is increased to be laminated, and the two are joined together. Can be strengthened.

[0024]

1 and 2 show a glass run 1 according to a first embodiment of the present invention. As shown in FIG.
It is attached to a door sash 21 of an automobile to seal an outer peripheral edge of a door glass 22. The glass run 1 includes a channel portion 4 including a base portion 2 and two side wall portions 3, two seal lip portions 5 extending from free ends of both side wall portions 3 to the inside of the channel portion 4, and a surface of the base portion 2. And a lip sliding member 8 coated on the surface of the seal lip portion 5. Further, the boundary between the seal lip portion 5 and the lip sliding member 8 on the surface of the seal lip portion 5 is formed in a wavy shape to increase the contact area. Also, the boundary between the base 2 and the base sliding member 7 is formed in a wavy shape as described above.

In the glass run 1, the channel portion 4 has a spring hardness Hs of 70 ° to 90 ° (JIS A).
O, the seal lip 5 has a spring hardness Hs of 50 ° or more.
70 ° (JIS A) TPO (Channel 4 TP
O, and the base sliding member 7 is a TPO having a Shore hardness D of 45 ° to 60 °, and the lip sliding member 8 is a TPO having a Shore hardness of D30 ° to 45 ° (base). The composition ratio of the material is different from that of TPO of the part sliding material 7), and is formed by simultaneous extrusion molding. Therefore, the number of manufacturing steps is small, and the cost can be reduced.

As shown in FIG. 2, this glass run 1
The door sash 21 is inserted and attached in the longitudinal direction. The channel part 4 has a spring hardness Hs of 70 ° to 9 °.
Since it is formed to be moderately hard with a TPO of 0 ° (JIS A), it can be easily inserted into the door sash 21.

As shown in FIG. 1, the channel portion 4 is extruded with both side walls 3 opened in an inverted C shape.
As shown in FIG. 2, the side wall portions 3 are fitted to the door sash 21 in a state where the side wall portions 3 are moved substantially parallel to each other against elasticity. Since the channel portion 4 is formed to be moderately hard as described above, both ends of the base portion 2 abut on the inner surface of the door sash 21 with appropriate elasticity, and a sufficient fitting force can be obtained.

The two seal lip portions 5 sandwich both outer peripheral edges of the door glass 22 which moves up and down (in the direction perpendicular to the plane of FIG. 2). The seal lip 5 has a spring hardness Hs50.
Since it is formed to be moderately soft with TPO of ° to 70 ° (JIS A), it exhibits mechanical properties (especially elasticity, hysteresis, etc.) close to those of EPDM rubber, and provides excellent sealability and sag resistance. . Further, since the seal lip portion 5 is formed to be appropriately soft, the seal lip portion 5 is elastically contacted with the opening side edge of the door sash 21 to tightly seal between them. Further, since the boundary between the seal lip portion 5 and the lip sliding member 8 is formed in a wavy shape, the contact area thereof is increased, and the bonding strength between the two is strengthened. Furthermore, the lip sliding member 8 is formed so that the thickness of the lip sliding member 8 can be made thicker and thinner.
Even if it is curved along the corner portion of the, fine buckling wrinkles do not occur.

The outer peripheral edge of the door glass 22 that moves up and down slides on the base sliding member 7, and often comes into strong sliding contact. However, the base sliding member 7 has a Shore hardness D45.
Since it is hard formed by TPO of 60 ° to 60 °, wear is prevented and high durability is obtained. In addition, the boundary between the base 2 and the base sliding member 7 is also formed in a wavy shape, thereby improving the bonding strength between the two.

The outer periphery of the door glass 22 which moves up and down slides on the lip sliding member 8. The lip sliding member 8 is formed of TPO having a Shore hardness D of 30 ° to 45 ° to the minimum necessary hardness, so that not only wear is prevented but also the mechanical properties of the seal lip 5 are reduced. Damage is minor. Therefore, abnormal deformation of the seal lip portion 5 and deterioration of followability to the door glass are not caused, and the seal is not broken. The boundary between the lip sliding member 8 and the seal lip 5 is formed in a wavy shape. In particular, the base portion of the seal lip 5 that needs to follow the door glass is made thinner to directly slide on the door glass. The contact portion can be made thicker.

FIG. 4 shows a glass run 11 according to a second embodiment of the present invention, in which the channel portion 4 and the seal lip portion 5 are combined with a spring hardness Hs of 60 ° to 80 ° (JIS).
A) The first embodiment differs from the first embodiment in that it is formed integrally by extrusion molding with the TPO of A) and that the boundary between the base 2 and the base sliding material 7 is not corrugated. Is substantially the same as the first embodiment.

In this glass run 11, the channel portion 4 is different from the glass run 1 of the first embodiment.
9 and FIG. 10 are slightly less effective in improving the ease of insertion into the door sash 21 and the improvement of the fitting force, and the sealing property and the set resistance of the seal lip portion 5. Unlike the base member 61, the base sliding member 7 is formed of TPO having a Shore hardness of D45 ° to 60 ° and is hard,
Further, the lip sliding material 8 has a Shore hardness D30 ° to 45 °.
Since the boundary between the seal lip portion 5 and the seal lip portion 5 is formed to have a necessary minimum hardness, the seal lip portion 5 does not cause abnormal deformation and the followability to the door glass is deteriorated. Does not occur.

FIG. 5A shows a glass run 110 according to a third embodiment of the present invention, which includes a channel portion 4 and a seal lip portion 5. The channel portion 4 is formed of EPDM solid rubber having a spring hardness Hs of 70 ° to 90 ° (JIS A), and the seal lip portion 5 is formed of EPDM solid rubber having a spring hardness of Hs of 50 ° to 70 ° (JIS A). . And the seal lip portion 5
Among them, a sponge elastic auxiliary portion 105 made of EPDM sponge rubber is formed between the lip base on the back surface side of the seal lip on the vehicle interior and the side wall portion 3a on the vehicle interior of the channel portion 4. Note that the channel portion 4, the seal lip portion 5, and the sponge elastic auxiliary portion 105 are integrally formed by extrusion. Further, the sponge elastic auxiliary portion 105 may be provided between the side wall portion 3b on the vehicle outside and the seal lip portion 5. Sliding members 7 and 8 are formed on the surface of the seal lip portion 5 and the surface of the base portion of the channel portion 4, respectively. The sliding members 7 and 8 have a spring hardness Hs9.
The sliding film is formed of a polyurethane resin of about 0 ° (JIS A) and having a thickness of about 50 μm.

The channel portion 4 has a spring hardness H.
s 70 ° to 90 ° (JIS A) formed of TPO, and the seal lip 5 has a spring hardness Hs of 50 ° to 70 °.
(JIS A) TPO may be used. In this case, the base sliding member 7 has a Shore hardness D type of 45 °.
The lip sliding member 8 can be formed of TPO having a Shore hardness of D of 30 ° to 45 °. Further, the sponge elastic auxiliary portion 105 is
And may be formed by co-extrusion of a foam (sponge).

In the glass run 110 of the third embodiment, the boundary between the sponge elastic auxiliary portion 105 and the seal lip portion 5 on the inside of the vehicle is formed with irregularities to increase the contact area. Therefore, the joining strength between the two is strengthened. And, since the sponge elastic auxiliary portion 105 is formed at the lip root portion on the back surface side of the seal lip portion 5,
Since the seal lip portion 5 is easily bent at the base of the lip and the elasticity thereof is assisted by the sponge elasticity assisting portion, the fluttering of the door glass 22 is prevented without increasing the operation force when the door glass 22 is moved up and down. be able to. Further, when the door is strongly closed with the door glass 22 slightly opened, it is possible to suppress the contact between the seal lip portion 5 and the side wall of the channel portion 4 due to a large run-out of the door glass 22, thereby reducing the contact noise. Generation can be prevented. Then, the set (permanent distortion) of the seal lip portion 5 can be suppressed by the sponge elastic auxiliary portion 105, without causing abnormal deformation of the seal lip portion 5 and deterioration in followability to the door glass 22, The seal does not break.

FIG. 5B shows a modification of the third embodiment. In this glass run 111, the sponge elastic auxiliary portion 105 made of EPDM sponge rubber is applied only to the lip base of the seal lip portion 5. It is formed thick. The overall thickness of the seal lip 5 is shown in FIG.
Since the seal lip portion 5 is formed to be thinner than its thickness in FIG.
s 70 ° to 90 ° (JISA) solid rubber or solid TPO material can be used. Other configurations are the same as those in FIG. Therefore, FIG.
Since the same operation and effects as those of the glass run 110 of FIG. 5A can be obtained, and the same material can be used for the channel portion 4 and the seal lip portion 5, it is easier to manufacture than the glass run of FIG. .

FIG. 5C shows another modification of the third embodiment. In this glass run 112, the EPD which becomes thinner toward the tip over the entire back surface of the seal lip portion 5 is shown.
A sponge elastic auxiliary portion 105 made of M sponge rubber is formed, and is further joined in an uneven shape near the tip of the seal lip portion 5. Therefore, in addition to having the same operation and effect as the glass run 110 of FIG. 5A, since the back surface of the tip of the seal lip portion 5 is formed of sponge,
Generation of contact noise between the seal lip portion 5 and the side wall portion 3a can be further prevented.

FIG. 6A shows a glass run 113 according to a fourth embodiment of the present invention, and FIG. 6B shows a glass run 114 of a modified example. These glass runs 113 and 114 are configured by extracting and combining characteristic portions from the first embodiment to the third embodiment and modifications thereof. In addition, these glass runs 1
Reference numerals 13 and 114 denote glass runs in which molding lips 104 are provided on the outer sides of the side walls of the channel portion 4, respectively. That is, in FIG. 6A, the sponge elastic auxiliary portion 1 made of the EPDM sponge rubber shown in the third embodiment is used.
05, and the base sliding member 7 is formed in a wavy shape with the channel portion 4. Further, a plurality of grooves are formed on the surface of the base sliding member 7,
The slidability with the end face of the door glass 22 is improved.

In the glass run 113 shown in FIG. 6A, the channel portion 4 has a spring hardness Hs of 70 ° (JIS A).
The seal lip portion 5 on the outside of the vehicle is mostly made of TPO having the same hardness as the channel portion 4, and the seal lip portion 5 on the inside of the vehicle has a sponge elastic auxiliary portion 105 mostly made of EPDM sponge rubber. T laminated on the surface
It is made of PO. The TPO is made of a material having a Shore hardness D type and a hardness of 45 °, and is also used as the surface of the seal lip portion 5 on the outside of the vehicle and the base portion sliding member 7.

In the glass run 114 of FIG. 6B, the sponge elastic auxiliary portion 105 and the spring hardness Hs 70 ° (JIS A) are arranged in this order from the inside of the seal lip portion 5 inside the vehicle.
The glass run 113 is different from the glass run 113 in that it has a three-layer structure of TPO and TPO having a Shore hardness of D40 °. The hard TPO on the surface layer is the lip sliding member 8, and the boundary between the TPO as the intermediate layer and the hard TPO as the lip sliding member 8 is formed in a wave shape and laminated.

Accordingly, these glass runs 113, 11
4 also has the same effect as the glass runs 1, 11, and 110.
It works.

The present invention is not limited to the above-described embodiment, and may be embodied with appropriate modifications without departing from the spirit of the invention, for example, as described below.

(1) The base sliding member 7 and the lip sliding member 8 are formed (extruded) of styrene-based TPE or polyethylene resin. (2) The present invention is applied to a glass run for a slide glass on a side surface or a rear portion of a vehicle. (3) The present invention is applied to a glass run (weather strip) of a sliding portion for a sliding roof provided on a roof portion of a vehicle.

[0044]

As described in detail above, according to the glass runs according to the first to fifth aspects of the present invention, the number of manufacturing steps is small, the cost can be reduced, and the channel section can be easily inserted into the sash. It is possible to easily achieve both improved fitting force and sealability and sag resistance of the seal lip portion, and even if a lip sliding material is formed on the surface of the seal lip, the seal does not break, In addition, there is an excellent effect that the joining force between the seal lip and the lip sliding material can be improved.

According to the glass run according to the sixth to eighth aspects of the present invention, the number of manufacturing steps is small, the cost can be reduced, the ease of insertion of the channel portion into the sash and the fitting force can be improved, and the sealing performance can be improved. The sealing properties and sag resistance of the lip can be easily compatible, and even if the lip sliding material is formed on the surface of the sealing lip, the seal does not break, and The joining force with the lip sliding material can be improved. Further, it is possible to prevent fluttering of the door glass when the door glass is moved up and down, and it is possible to suppress the contact noise between the seal lip portion and the side wall of the channel portion when the door is strongly closed with the door glass slightly opened. , Which is an excellent effect.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a glass run according to a first embodiment of the present invention.

FIG. 2 is a sectional view when the glass run of FIG. 1 is fitted to a door sash.

FIG. 3 is a partial side view of an automobile to which the glass run of FIG. 1 is applied.

FIG. 4 is a cross-sectional view when a glass run according to a second embodiment of the present invention is fitted to a door sash.

FIG. 5A is a cross-sectional view showing a glass run according to a third embodiment of the present invention, and FIGS. 5B and 5C are cross-sectional views of a main part showing a modified example thereof.

FIG. 6A is a cross-sectional view illustrating a glass run according to a fourth embodiment of the present invention, and FIG. 6B is a cross-sectional view illustrating a modified example thereof.

FIG. 7 is a cross-sectional view showing a conventional glass run.

8 is a sectional view when the glass run of FIG. 7 is fitted to a door sash.

FIG. 9 is a sectional view showing another conventional glass run.

10 is a sectional view when the glass run of FIG. 9 is fitted to a door sash.

[Explanation of symbols]

1, 11, 110, 111, 112, 113, 114
Glass run 2 base 3 side wall 4 channel 5 seal lip 7 base sliding material 8 lip sliding material 11 glass run 21 door sash 22 door glass 104 molding lip 105 sponge elastic auxiliary part

Claims (8)

[Claims] 1. A channel portion comprising a base portion and a side wall portion, a seal lip portion extending from the side wall portion to the inside of the channel portion, a base portion sliding material coated on a surface of the base portion, and the seal. A lip sliding material coated on the surface of the lip, wherein the channel and the seal lip have a spring hardness Hs of 60 ° to 80 ° (J
IS A) rubber or thermoplastic elastomer, wherein the base sliding material is a thermoplastic elastomer or resin having a Shore hardness D45 ° to 60 °, and the lip sliding material is a Shore hardness D30 ° to 45 °. A glass run formed of an extruded thermoplastic elastomer or resin (having a different compounding ratio from the thermoplastic elastomer or resin of the base sliding material), and at least the seal lip and the lip A glass run in which the boundary with the sliding material is laminated in a wave shape. 2. A channel portion including a base portion and a side wall portion, a seal lip portion extending from the side wall portion, a base portion sliding material coated on a surface of the base portion, and a surface of the seal lip portion. And the channel portion has a spring hardness Hs of 70 ° to 90 ° (J
IS A) rubber or thermoplastic elastomer, wherein the seal lip has a spring hardness Hs of 50 ° to 70 ° (J
ISA) rubber or thermoplastic elastomer (the mixing ratio of the material is different from that of the channel rubber or thermoplastic elastomer), and the base sliding material has a Shore hardness D4.
5 ° to 60 ° thermoplastic elastomer or resin, wherein the lip sliding material is a thermoplastic elastomer or resin having a Shore hardness D of 30 ° to 45 ° (the thermoplastic elastomer or resin of the base sliding material is a material). Are different)
A glass run formed by extrusion molding, wherein at least a boundary between the seal lip portion and the lip portion sliding material is formed in a wavy shape and laminated. 3. The glass run according to claim 1, wherein a boundary between the base portion and the base sliding member is also formed in a wave shape and laminated. 4. A channel portion comprising a base portion and a side wall portion, a seal lip portion extending from the side wall portion to the inside of the channel portion, and a base portion sliding material coated on a surface of the base portion, The channel portion is a glass run formed by extrusion molding with a solid rubber or a solid thermoplastic elastomer having a spring hardness Hs of 70 ° to 90 ° (JIS A), and at least a seal lip inside the vehicle among the seal lip portions. A glass run having a sponge elasticity assisting portion formed between a lip base portion on the back surface side of the vehicle and a side wall portion on the vehicle interior side of the channel portion. 5. The glass run according to claim 4, wherein
The base sliding material has a Shore hardness D type of 45 ° to 60 °.
°, and the seal lip portion has a spring hardness Hs of 50 ° to 70 ° (J
A glass run formed of a solid rubber or a solid thermoplastic elastomer of IS A) (the compounding ratio of the material is different from that of the solid rubber or the solid thermoplastic elastomer of the channel portion). 6. A channel having a base portion and a side wall portion, and a seal lip portion extending from the side wall portion, wherein the channel portion and the seal lip portion have a spring hardness H.
s 70 ° to 90 ° (JIS A), which are integrally formed by extrusion molding with a solid rubber, and among the seal lip portions, at least a lip root portion on the back surface side of the seal lip on the inside of the vehicle and a side wall on the vehicle inside of the channel portion. A glass run in which a sponge elastic auxiliary part is formed between the sponge elastic part and the boundary between the sponge elastic auxiliary part and the seal lip part, the contact area of the boundary being increased due to unevenness and laminated. run. 7. The glass run according to claim 6, wherein
A glass run in which a base sliding material layer is formed on a surface of the base and a lip sliding material layer is formed on a surface of the seal lip. 8. The glass run according to claim 7, wherein
A glass run in which a boundary between the seal lip portion and the lip portion sliding material layer is formed in a wave shape and laminated.