JP2007237846A - Glass run - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a glass run capable of suppressing increase of cost while ensuring durability and flexibility. <P>SOLUTION: The glass run includes a main body portion 11 and a pair of seal lips 12, 13. The main body portion 11 has a base bottom portion 14 fitted in a sash DS, a vehicle outer side wall portion 15 which extends from the base bottom portion 14, and a vehicle inner side wall portion 16. The base bottom portion 14 in a portion at least corresponding to a vertical side portion of the door glass DG includes a slide contact portion 21 which is a portion set so as to come into sliding contact, facing the end surface of the door glass DG, and a general portion 22 which is a part not set facing the end surface of the door glass DG. The rigidity of the slide contact portion 21 is higher than the general portion 22. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a glass run.

  Generally, a glass run is provided at the periphery of the glass opening of an automobile. The glass run is composed of an extrusion molded part formed in a substantially straight shape (long shape) and a mold forming part that connects the extruded parts with a predetermined angle, for example, a glass opening. It consists of a front vertical side part, an upper side part, and a rear vertical side part along the shape. Further, when viewed from the cross-sectional direction, the glass run is formed from a substantially U-shaped main body portion including a base portion and a pair of side wall portions extending from the base portion in the inner peripheral direction of the glass opening, and from substantially leading ends of the both side wall portions. A pair of seal lips extending inward of the main body. In the glass run, the main body is attached to the inner periphery of the sash provided along the glass opening, and the inside and outside of the door glass are sealed by the pair of seal lips.

  As materials constituting the glass run, ethylene-α-olefin non-conjugated diene copolymer (EPDM), olefin-based thermoplastic elastomer (TPO), and the like are known.

By the way, since the base part of the front vertical side part and the rear vertical side part of the glass run is in sliding contact with the end face of the door glass when the door glass is opened and closed, it is necessary to suppress wear caused by sliding of the door glass. . Therefore, as shown in FIG. 6, a tape (PE tape) 55 made of polyethylene resin or the like harder than the base portion 54 is attached to the inner surface of the base portion 54 that is in sliding contact with the door glass DG. There is a technique for improving the performance (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 10-71649

  However, when the PE tape 55 is attached to the inner surface of the base portion 54 as described above, although the wear resistance is improved, the rigidity is also improved and the flexibility is lowered. There is a risk of increasing costs. On the other hand, it is conceivable to make the PE tape 55 thin, but in this case, there is a possibility that a predetermined durability cannot be ensured.

  This invention is made | formed in view of the said situation, The objective is to provide the glass run which can suppress the increase in cost, ensuring durability and flexibility.

  In the following, each means suitable for solving the above-mentioned purpose will be described in terms of items. In addition, the effect etc. peculiar to the means to respond | correspond as needed are added.

Means 1. A main body part having a substantially U-shaped cross section consisting of a base part and a pair of side wall parts extending from the base part, and a pair of seal lips extending inward of the main body part from the substantially leading ends of the both side wall parts,
The main body is a glass run attached to the inner periphery of a sash provided along the glass opening of the vehicle,
Of the base portion corresponding to at least the vertical side of the door glass, a portion that is set so as to be in sliding contact with the end surface of the door glass and a portion that is not set to face the end surface of the door glass A glass run characterized by having a higher rigidity than that of the glass run.

  According to the means 1, the rigidity of the base portion is set so as to be in sliding contact with the end face of the door glass, that is, the rigidity of the sliding contact portion with the door glass particularly requiring durability. It is higher than the rigidity of the part that is not set facing the end face of the glass. In other words, the rigidity of the part that is basically not in contact with the door glass (or the part that is not set to contact the door glass) is lower than the sliding contact part with the door glass. . For this reason, durability can be aimed at, ensuring the flexibility as a glass run. Further, for example, by increasing the rigidity of the entire base portion, it is possible to suppress the possibility that the rigidity of the glass run becomes higher than necessary and the workability of attaching the glass run is deteriorated. In addition, even when the glass run is attached to a curved sash, the attachment state can be stabilized.

  Further, in order to improve the slidability, for example, even when a sliding layer (PE tape or the like) is provided on the inner surface of the base, it is set so as to be in sliding contact with the end surface of the door glass. Since the durability of the glass run is ensured by increasing the rigidity of the part, there is no need to obtain durability of the sliding layer, and the sliding layer can be made thin. Therefore, the usage amount of the material constituting the sliding layer can be suppressed, and an increase in cost can be suppressed.

Mean 2. The portion that is set to slidably contact with the end surface of the door glass is made of a material that is harder than the portion that is not set to face the end surface of the door glass,
Means 1 is characterized in that a part set to be in sliding contact with the end face of the door glass and a part not set to face the end face of the door glass are simultaneously formed by extrusion molding. The glass run described.

  According to the means 2, the base is harder at the part set so as to be in sliding contact with the end face of the door glass than the part not set at the end face of the door glass. In other words, only the portion of the base that requires durability is configured to be hard, and the rigidity of the portion is higher than the rigidity of other portions. For this reason, durability can be aimed at, ensuring the flexibility as a glass run. As a result, the same effects as those of the means 1 are achieved.

  Furthermore, the part set so as to be in sliding contact with the end surface of the door glass is formed simultaneously with the part not set to face the end surface of the door glass. For this reason, for example, in order to improve the durability, the work efficiency is improved and the cost is reduced as compared with a configuration in which a tape made of a material harder than the base is attached to the inner surface of the base. Can do.

  In addition, you may mix | blend the sliding component for improving a slidability to the material which comprises the site | part set so that it may slidably contact with the end surface of a door glass. Moreover, the site | part which is not set facing the end surface of a door glass is good also as being comprised with the same raw material as a side wall part.

  Means 3. The part set so as to be in sliding contact with the end surface of the door glass is exposed from the inner surface of the base portion, and is in sliding contact with the end surface of the door glass on the inner surface of the base portion. The glass run according to means 2, characterized in that a portion set to be equal to a portion not set to face the end face of the door glass is flush with each other.

  According to the means 3, the glass sliding surface can be a flat surface, and problems caused by the formation of steps on the glass sliding surface can be prevented. In addition, when the door glass side of the part set so as to slidably contact with the end surface of the door glass is covered with the material constituting the part that is not set to face the end surface of the door glass In comparison, it is possible to suppress the deformation of the base portion when the door glass is in sliding contact.

  Means 4. In the width direction of the base portion, the length of the portion set to be in sliding contact with the end surface of the door glass is less than half the length of the inner surface of the base portion or 3. The glass run according to 3.

  According to the means 4, the flexibility as a glass run can be ensured more reliably.

Means 5. The base portion includes a protruding portion protruding toward the sash side in the vicinity of the connecting portion with the side wall portion,
In the attached state of the main body, the protruding portion is substantially in contact with the sash, and a gap is formed between a portion of the base portion where the protruding portion is not formed and the sash. And
At least the base portion in the portion corresponding to the vertical side portion of the door glass has a portion set so as to be in sliding contact with the end surface of the door glass, than a portion not set to face the end surface of the door glass. Also has a thick part so that it rises to the sash side,
The glass run according to means 1, wherein the thick portion is substantially in contact with the sash when the main body is attached.

  In general, the base portion includes a protruding portion that protrudes toward the sash side from the vicinity of the connecting portion with the side wall portion. When the main body portion is attached to the sash, the protruding portion and the sash are substantially in contact with each other. In addition, it is designed such that a gap is formed between a portion of the base portion where the protruding portion is not formed and the sash. As described above, the gap is formed between the base portion and the sash, so that the glass run can be smoothly bent at the time of attachment or the like. However, in this case, when the door glass comes into pressure contact with the base portion, the base portion may be deformed relatively large. If the base portion is deformed in this way, the slidability may be deteriorated. Further, due to the sliding contact of the door glass with the deformed base portion, a large stress is applied to the base portion, and the base portion may be scraped at a fast pace.

  In this regard, according to the means 5, the base portion includes a thick portion at a portion set so as to be in sliding contact with the end surface of the door glass, and the protrusion protrudes when the main body portion is attached. In addition to the portion, the thick portion is also brought into substantially contact with the sash. For this reason, there is almost no gap between the sash and the portion of the base portion that is set to slidably contact the end surface of the door glass, and the base portion is deformed even if it is pressed against the door glass. Will be regulated. Therefore, the rigidity and durability of the part set so as to be in sliding contact with the end surface of the door glass are improved, and the above problems can be suppressed.

  Furthermore, a gap is still formed between the thick portion and the protruding portion of the base portion between the sash. Therefore, for example, by making the entire base portion thick so that there is no gap between the base portion and the sash, the rigidity of the glass run becomes higher than necessary and the workability of attaching the glass run is reduced. Such a fear can be suppressed. Therefore, it is possible to improve durability while ensuring flexibility as a glass run, and as a result, the same effects as the above-described means 1 are achieved.

  Further, for example, work efficiency can be improved and cost can be reduced as compared with a configuration in which the durability of the glass run is improved by sticking a tape to the base. In the case where the protruding portion is close to the thick portion, both may be integrated and formed simultaneously.

  Means 6. The glass run according to means 5, wherein the thick part is formed simultaneously with the base part by extrusion molding.

  According to the means 6, for example, an operation of attaching a separate member to the base portion in order to form a thick portion can be omitted, and as a result, work efficiency can be improved.

  Mean 7 The glass run according to means 5 or 6, wherein in the width direction of the base portion, the formation range of the thick portion is 2/3 or less of the length of the inner surface of the base portion.

  According to the means 7, the flexibility as a glass run can be ensured more reliably.

  Hereinafter, an embodiment will be described with reference to the drawings. FIG. 1 is a schematic front view showing a schematic configuration of a door. 2 is a cross-sectional view taken along the line JJ of FIG. 1 showing the configuration of the glass run.

  A glass run is attached corresponding to the outer periphery of the glass opening of the automobile door. More specifically, as shown in FIG. 1, the door DF is provided with a sash DS so as to follow the outer peripheral shape of the door DF, and the glass opening through which the door glass is moved up and down by the sash DS. Part W is partitioned. And the glass run 1 is attached to the inner periphery of the sash DS.

  First, a schematic configuration of the glass run 1 will be described. As shown in FIG. 1, the glass run 1 includes an extrusion molding portion 2 corresponding to the upper side portion in the longitudinal direction, extrusion molding portions 3 and 4 corresponding to the front and rear vertical side portions, and two extrusion molding portions 2 and 2. A distinction is made between mold forming parts 5 and 6 (parts with a dotted pattern in FIG. 1) connecting the end parts of 3 and 2 and 4. Each extrusion molding part 2-4 is formed in the shape of a straight line (long shape) with the extrusion molding machine which is not illustrated. The mold forming parts 5 and 6 are connected and molded by a mold apparatus (not shown) so that the two extruded parts 2, 3 and 2, 4 are connected to each other at a predetermined angle.

  As shown in FIG. 2, the extrusion molding portion 3 includes a main body portion 11 and a pair of seal lips 12 and 13. The main body 11 includes a base portion 14 fitted into the sash DS, a vehicle outer side wall portion 15 and a vehicle inner side wall portion 16 extending from the base portion 14. When the door glass DG is opened and closed, the end surface of the door glass DG is in sliding contact with the inner surface of the base portion 14. Further, the seal lips 12 and 13 extend from substantially the front ends of the side wall portions 15 and 16 toward the inside of the main body 11 (in the direction of the base portion 14), respectively. In the closed state of the glass opening W, the outer surface of the seal lip 12 (the surface on the inner peripheral side of the glass opening W) is pressed against the outer surface of the door glass DG, and the outer surface of the seal lip 13 is made of the door glass DG. It is pressed against the inner surface. Thereby, the vehicle exterior side and vehicle interior side of the door glass DG are each sealed. Further, in the present embodiment, the vehicle exterior design lip 17 that extends outward (vehicle exterior) from the vehicle exterior side wall 15 and the vehicle interior design lip that extends outward (vehicle interior) from the vehicle interior side wall 16. 18 is formed. The main body 11 and the seal lips 12 and 13 in the present embodiment are made of EPDM solid rubber having an IRHD hardness of about 70 to 80 Hs.

  Moreover, since the extrusion molding part 3 is the structure which presses and seals the seal lips 12 and 13 extended to the inner side of the main-body part 11 from the substantially front-end | tip of the both-side wall parts 15 and 16 to the door glass DG, The width is larger than the thickness of the door glass DG. In general, the door glass DG is brought to the outside of the sash DS in the closed state in order to achieve a flash surface. The extrusion molding parts 2 and 4 and the mold molding parts 5 and 6 also include a main body part 11 and a pair of seal lips 12 and 13.

  By the way, in this embodiment, the base part 14 of the extrusion molding part 3 is a part (henceforth the sliding contact part 21) set so that it may oppose to the end surface of the door glass DG, and door glass DG. It is comprised from the site | part (henceforth the general part 22) which is not set facing the end surface of this. As described above, the door glass DG is brought closer to the vehicle exterior side of the sash DS due to flash surface formation, so that the sliding contact portion 21 is located at the central portion of the base portion 14 in the width direction of the base portion 14. It is provided slightly biased to the outside of the vehicle. As described above, the general portion 22 is made of EPDM solid rubber having an IRHD hardness of about 70 to 80 Hs. On the other hand, the sliding contact portion 21 is made of EPDM solid rubber having an IRHD hardness of about 85 to 95 Hs in order to increase rigidity. That is, a portion of the base portion 14 that is in sliding contact with the door glass DG is harder than a portion that is not in sliding contact with the door glass DG.

  In the present embodiment, in the width direction of the base portion 14, the length of the sliding contact portion 21 is about half of the length of the inner surface of the base portion 14. Furthermore, the slidable contact portion 21 and the general portion 22 are flush with each other on the inner surface of the base portion 14 and the surface on the sash DS side. A urethane coating film is formed on the inner surface of the base portion 14 with a substantially uniform thickness. Thereby, the improvement of slidability is achieved. The sliding contact portion 21 is configured to be harder than the general portion 22 because the EPDM solid rubber constituting the sliding contact portion 21 contains more carbon black than the EPDM solid rubber constituting the general portion 22. Yes.

  In addition, the extrusion molding part 4 which comprises a back vertical side part is also provided with the sliding contact part 21 in the base part 14 similarly to the extrusion molding part 3. FIG.

  As described above in detail, in the present embodiment, the base portion 14 has a sliding contact portion (sliding contact portion 21) with the door glass DG from a portion (general portion 22) that hardly contacts the door glass DG. Is also getting harder. That is, only a portion of the base portion 14 that requires particularly durability is configured to be hard. For this reason, durability can be aimed at, ensuring the flexibility of glass run 1. Therefore, for example, by configuring the base portion 14 as a whole with a hard material, the rigidity of the glass run 1 becomes unnecessarily high, and the possibility that the mounting workability of the glass run 1 is reduced is suppressed. Can do. Furthermore, the flexibility of the glass run can be more reliably ensured by setting the length of the sliding contact portion 21 to about half of the length of the inner surface of the base portion 14 in the width direction of the base portion 14. Further, for example, work efficiency can be improved and cost can be reduced as compared with a configuration in which the durability of the glass run 1 is improved by sticking PE tape or the like to the base portion 14.

  Furthermore, since the sliding contact portion 21 and the general portion 22 are flush with each other on the inner surface of the base portion 14, the glass sliding surface can be made flat. Therefore, it is possible to prevent problems caused by the formation of a step on the glass sliding surface. Moreover, compared with the case where the door glass DG side of the sliding contact portion 21 is covered with the material constituting the general portion 22, the deformation of the base portion 14 when the door glass DG is in sliding contact can be suppressed. .

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above embodiment, the sliding contact portion 21 that is the sliding contact portion with the door glass DG is configured to be harder than the general portion 22 in order to improve the rigidity and durability of the specific portion of the base portion 14. However, it is not particularly limited to such a configuration.

  Hereinafter, another example of the aspect of improving the rigidity and durability of a specific portion of the base portion 14 (a portion set to be in sliding contact with the end surface of the door glass DG) will be described with reference to FIG. As shown in the figure, the base portion 14 includes a protruding portion 31A that protrudes toward the sash DS in the vicinity of the connecting portion with the vehicle interior side wall portion 16. In addition, the base portion 14 includes a protruding portion 31B that protrudes toward the sash DS in the vicinity of the connecting portion with the vehicle outer side wall portion 15. Further, the base portion 14 is configured such that a portion that is set so as to be in sliding contact with the end surface of the door glass DG is raised to the sash DS side than a portion that is not set to face the end surface of the door glass DG. A thick portion 32 is provided. However, in this example, the protruding portion 31B and the thick portion 32 are integrated. In the attached state of the main body part 11, the projecting parts 31 </ b> A and 31 </ b> B and the thick part 32 are substantially in contact with the sash DS, and between the projecting part 31 </ b> A and the thick part 32 of the base part 14. A slight gap is formed between the part and the sash DS. In addition, in the width direction of the base portion 14, the formation range of the thick portion 32 is 2/3 or less of the length of the inner surface of the base portion 14.

  When such a configuration is adopted, due to the presence of the thick portion 32, there is almost no gap between the portion of the base portion 14 that is set so as to be in sliding contact with the end surface of the door glass DG and the sash DS. Even if the base portion 14 is pressed against the door glass DG, the deformation is restricted. Accordingly, it is possible to suppress problems such as deterioration of slidability due to the sliding contact of the door glass DG with the deformed base portion 14 and the base portion 14 being scraped at a fast pace. As a result, durability can be improved.

  Furthermore, a gap between the protruding portion 31A and the thick portion 32 of the base portion 14 is still formed between the base portion 14 and the sash. Therefore, for example, the rigidity of the glass run 1 becomes excessively high by making the base part 14 thick so that there is no gap between the base part 14 and the sash DS. It is possible to suppress the fear that the performance will deteriorate. Furthermore, the flexibility as a glass run can be more reliably ensured by setting the formation range of the protrusion 32 to 2/3 or less of the length of the inner surface of the base portion 14.

  Further, for example, work efficiency can be improved and cost can be reduced as compared with a configuration in which the durability of the glass run 1 is improved by sticking PE tape or the like to the base portion 14. In addition, in order to improve the slidability, for example, even when a sliding layer (PE tape or the like) is provided on the inner surface of the base portion 14, the durability of the glass run 1 is enhanced by the presence of the thick portion 32. Therefore, it is not necessary to require durability for the sliding layer, and the sliding layer can be made thin. Therefore, the usage amount of the material constituting the sliding layer can be suppressed, and an increase in cost can be suppressed.

  In addition, the thick part 32 is good also as being comprised by sticking another member, and good also as being simultaneously formed by extrusion molding. When the latter configuration is employed, for example, an operation of attaching a separate member to the base portion 14 can be omitted, and as a result, work efficiency can be improved. Moreover, as shown in FIG. 4, you may provide the protrusion part 31B and the thick part 32 spaced apart. In addition, the thick portion 32 may be configured by providing a plurality of convex portions projecting toward the sash DS side from a portion set so as to be in sliding contact with the end surface of the door glass DG.

  (B) In the above embodiment, the urethane coating film is formed on the inner surface of the base portion 14 in order to improve the slidability, but it is not particularly limited to such a configuration. For example, PE tape or the like may be attached so as to cover the inner surface of the base portion 14 of the extrusion molding portion 3. Even when a PE tape or the like is attached in this manner, the durability of the glass run 1 is ensured by the sliding contact portion 21 as described in the above embodiment, and thus the durability is required for the PE tape or the like. There is no need, and the PE tape can be made thin. Therefore, the usage amount of the material (polyethylene resin or the like) constituting the PE tape or the like can be suppressed, and an increase in cost can be suppressed.

  Further, for example, a sliding component for improving the slidability may be blended with the material constituting the sliding contact portion 21. In this case, in order to improve slidability, the operation | work which forms a coating film separately on the inner surface of the base part 14, or affixes PE tape etc. can also be abbreviate | omitted.

  (C) In the above embodiment, the main body 11 and the seal lips 12 and 13 are made of EPDM, but may be made of another material such as TPO.

  (D) As shown in FIG. 5, the sash DS side of the sliding contact portion 21 may be covered with an EPDM solid rubber having an IRHD hardness of about 70 to 80 Hs constituting the general portion 22. In this case, the sliding contact portion 21 and the general portion 22 can be joined more firmly, and the risk that the sliding contact portion 21 and the general portion 22 are peeled can be suppressed. However, it is desirable that the sliding contact portion 21 is exposed from at least the inner surface of the base portion 14. Note that the exposed state is not limited to the configuration in which the door glass DG or the like is in direct contact with the sliding contact portion 21; for example, a PE sheet is attached to the inner surface of the base portion 14 or the like. And you may comprise so that the sliding contact part 21 cannot be visually recognized from the inner side of the main-body part 11. FIG. Of course, a urethane coating film may be formed on the inner surface of the base portion 14 as in the above embodiment.

  (E) In the above embodiment, the glass run 1 provided with both the vehicle exterior design lip 17 and the vehicle interior design lip 18 is embodied, but even when at least one of the lips is omitted. Applicable.

It is a front schematic diagram which shows schematic structure of a door. It is the JJ sectional view taken on the line of FIG. 1 which shows a glass run. It is sectional drawing which shows the glass run in another embodiment. It is sectional drawing which shows the glass run in another embodiment. It is sectional drawing which shows the glass run in another embodiment. It is sectional drawing which shows the conventional glass run.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Glass run, 2, 3, 4 ... Extrusion part, 5, 6 ... Molding part, 11 ... Main-body part, 12, 13 ... Seal lip, 14 ... Base part, 15 ... Car outer side wall part, 16 ... Car Inner side wall part, 21 ... sliding contact part, 22 ... general part, DG ... door glass, DS ... sash, W ... glass opening part.

Claims (7)

A main body part having a substantially U-shaped cross section consisting of a base part and a pair of side wall parts extending from the base part, and a pair of seal lips extending inward of the main body part from the substantially leading ends of the both side wall parts,
The main body is a glass run attached to the inner periphery of a sash provided along the glass opening of the vehicle,
Of the base portion corresponding to at least the vertical side of the door glass, a portion that is set so as to be in sliding contact with the end surface of the door glass and a portion that is not set to face the end surface of the door glass A glass run characterized by having a higher rigidity than that of the glass run. The portion that is set to slidably contact with the end surface of the door glass is made of a material that is harder than the portion that is not set to face the end surface of the door glass,
The part set so as to be in sliding contact with the end face of the door glass by extrusion molding and the part not set to face the end face of the door glass are simultaneously formed. The glass run described in 1.   The part set so as to be in sliding contact with the end surface of the door glass is exposed from the inner surface of the base portion, and is in sliding contact with the end surface of the door glass on the inner surface of the base portion. The glass run according to claim 2, wherein a portion set to be equal to a portion not set to face the end surface of the door glass is flush with the glass run.   The length of a portion set so as to be in sliding contact with the end surface of the door glass in the width direction of the base portion is less than or equal to half the length of the inner surface of the base portion. Or the glass run of 3. The base portion includes a protruding portion protruding toward the sash side in the vicinity of the connecting portion with the side wall portion,
In the attached state of the main body, the protruding portion is substantially in contact with the sash, and a gap is formed between a portion of the base portion where the protruding portion is not formed and the sash. And
At least the base portion in the portion corresponding to the vertical side portion of the door glass has a portion set so as to be in sliding contact with the end surface of the door glass, than a portion not set to face the end surface of the door glass. Also has a thick part so that it rises to the sash side,
2. The glass run according to claim 1, wherein the thick portion is substantially in contact with the sash when the main body is attached. 3.   The glass run according to claim 5, wherein the thick portion is formed simultaneously with the base portion by extrusion molding. The glass run according to claim 5 or 6, wherein in the width direction of the base portion, the formation range of the thick portion is 2/3 or less of the length of the inner surface of the base portion.

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