JP2007223571A - Glass run - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a glass run capable of preventing the deterioration of mounting efficiency while ensuring durability or the like. <P>SOLUTION: The glass run 1 is provided with a body 11 and a pair of seal lips 12, 13. The body 11 comprises a base bottom 14 fitted to a sash DS, an outdoor-side side wall 15 extending from the base bottom 14 and an indoor side side wall 16. A PE sheet 21 comprising a harder polyethylene resin than the base bottom 14 is stuck to the inner surface of the base bottom 14 at a portion, out of the glass run 1, corresponding to the vertical side of door glass DG. The PE sheet 21 has a projection 23 projected to the base bottom 14 side so that a portion set so as to be opposed and slide-contacted with the end surface of the door glass DG becomes thicker than a portion not set so as to be opposed to the end surface of the door glass DG. Further, the base bottom 14 is constituted such that a portion of an inner surface corresponding to the projection 23 has a recessed shape, and as a result, the bottom has a thin part 31. <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. 4, a sliding portion 55 that is harder than the base portion 54 made of polyethylene resin or the like is provided on the inner surface of the base portion 54 that is in sliding contact with the door glass DG so that the slidability and durability of the glass run 51 There exists a technique of improving a property and abrasion resistance (for example, refer patent document 1).
Japanese Patent Laid-Open No. 10-71649

  However, when a glass run in which a sliding portion is provided so as to have the same thickness (relatively thick) as a whole with respect to the inner surface of the base portion, the wear resistance and the like are improved. The rigidity of the object is also improved, and the flexibility may be reduced. In this case, there is a possibility that the mounting workability of the glass run is lowered. On the other hand, although it is conceivable to make the sliding portion thin, 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 prevent the fall of attachment workability | operativity, ensuring durability etc.

  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,
At least on the inner surface of the base portion corresponding to the vertical side portion of the door glass, a sliding layer made of a material harder than the base portion is provided,
The sliding layer is formed on the base side so that a portion set to be in sliding contact with the end surface of the door glass is thicker than a portion not set to face the end surface of the door glass. With a raised protrusion
The glass run is characterized in that the base portion is configured such that a portion of the inner surface corresponding to the protruding portion is recessed.

  According to the means 1, a sliding layer made of a material harder than the base portion is formed on the inner surface of the base portion with respect to at least a portion corresponding to the vertical side portion of the door glass in the glass run. For this reason, the abrasion resistance and sliding property with respect to sliding of a door glass can be improved.

  Further, in this means, the sliding layer has a portion that is set so as to be in sliding contact with the end surface of the door glass, that is, a sliding contact portion with the door glass that requires durability in particular. It is comprised thicker than the site | part which is not set facing the end surface of this. In other words, the portion that hardly comes into contact with the door glass is basically thinner than the sliding contact portion with the door glass. For this reason, durability can be aimed at, ensuring the flexibility of a glass run. Therefore, for example, by forming a thick sliding layer on the entire inner surface of the base portion, the risk that the rigidity of the glass run will become higher than necessary and the workability of mounting the glass run will be reduced is suppressed. can do. Further, since the flexibility of the glass run is ensured, the mounting state can be stabilized even when the glass run is attached to a curved sash. Furthermore, compared to the case where a thick sliding layer is formed on the entire inner surface of the base portion, the amount of material constituting the sliding layer can be suppressed, and an increase in cost can be suppressed.

  In addition, the sliding layer includes a protruding portion that rises toward the base portion corresponding to the portion that comes into sliding contact with the door glass, so that the portion that comes into sliding contact with the door glass is configured to be thick, and the base portion protrudes. The part corresponding to the part has a recessed shape. For this reason, even if the sliding layer is partially thickened as in this means, the surface of the sliding layer, that is, the glass sliding surface can be made flat without a step. Thereby, the malfunction resulting from a level | step difference being formed in a glass sliding surface can be prevented.

Mean 2. The base is made of an olefinic thermoplastic elastomer,
The sliding layer is composed of an olefin-based composition,
The glass run according to means 1, wherein the base and the sliding layer are simultaneously formed by extrusion.

  According to the means 2, the base portion and the sliding layer are extruded simultaneously. For this reason, the operation | work which sticks a separate member, for example in order to form a sliding layer in a base part can be abbreviate | omitted, As a result, the improvement of work efficiency can be aimed at.

  Moreover, since the base part is comprised with the olefin type thermoplastic elastomer (TPO), the sliding layer comprised with the olefin type composition can be firmly joined (thermal joining) to the base part. Therefore, it is possible to prevent the sliding layer from being peeled off from the base portion.

Means 3. 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,
At least on the inner surface of the base portion corresponding to the vertical side portion of the door glass, a sliding layer made of a material harder than the base portion is provided,
The sliding layer has a flat embedded tape that is attached to the base portion corresponding to a portion that is set so as to be in sliding contact with the end surface of the door glass, and is laminated on the embedded tape. A surface tape that is wider and flatter than the buried tape,
The glass run is characterized in that the base portion is configured such that a portion of the inner surface to which the embedded tape is attached is recessed.

  According to the means 3, the same effects as those of the means 1 can be obtained. In addition, since the embedded tape is not exposed on the surface, if it has a predetermined hardness, it should be composed of a material that does not contain a sliding component for improving the slidability or a recycled material. Can do. As a result, cost reduction and resource saving can be achieved.

  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 opening and closing the door glass DG, the end surface of the door glass DG is in sliding contact with a portion of the inner surface of the base portion 14 that is set to face the end surface of the door glass DG. 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 extrusion molding parts 2 and 4 and the mold molding parts 5 and 6 are also provided with a main body part 11 and a pair of seal lips 12 and 13. The main body 11 and the seal lips 12 and 13 in this embodiment are made of EPDM having an IRHD hardness of about 70 Hs.

  Now, in this embodiment, PE tape 21 made of a polyethylene resin harder than the base portion 14 is attached so as to cover the inner surface of the base portion 14 of the extrusion molding portion 3. In the present embodiment, the sliding layer is formed by the PE tape 21. The PE tape 21 is welded (attached) to the extruded portion 3 by being pressed against the extruded portion 3 immediately after vulcanization in a preheated state. In addition, the sliding component for improving the slidability of the door glass DG may be mix | blended with the polyethylene resin which comprises PE tape 21. FIG.

  The PE tape 21 includes a protruding portion 23 that protrudes toward the base portion 14 at a portion set so as to be in sliding contact with the end surface of the door glass DG. In other words, the PE tape 21 is thicker than the portion that is set so that the portion in sliding contact with the door glass DG does not face the end surface of the door glass DG and hardly comes into contact with the door glass DG.

  The extruded portion 3 is configured such that the seal lips 12 and 13 extending from the substantially leading ends of the side wall portions 15 and 16 to the inside of the main body portion 11 are pressed against the door glass DG and sealed. 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. In other words, the PE tape 21 attached to the inner surface of the base portion 14 corresponds to a portion that is set so that the vehicle outer side portion is in sliding contact with the end surface of the door glass DG. It is formed at a site outside the vehicle.

  Further, the base portion 14 has a thin portion 31 on the vehicle outer side corresponding to the protruding portion 23, and the inner surface of the base portion 14 is formed in a stepped shape so that the portion corresponding to the protruding portion 23 is recessed. Further, the difference in level of the step of the base portion 14 is substantially the same as the protruding length of the protruding portion 23. Then, the PE tape 21 is attached to the base portion 14 so that the protrusion 23 and the recess of the base portion 14 match.

  Note that the PE tape 21 is adhered to the base portion 14 of the extrusion molding portion 4 constituting the rear vertical side portion as in the extrusion molding portion 3.

  As described above in detail, in the present embodiment, regarding the extruded portions 3 and 4 corresponding to the vertical side portion of the door glass DG in the glass run 1, the base portion made of EPDM is formed on the inner surface of the base portion 14. A PE tape 21 made of polyethylene resin harder than 14 is attached. For this reason, the abrasion resistance and sliding property with respect to sliding of the door glass DG can be improved.

  Further, the PE tape 21 is set so as to be in sliding contact with the end surface of the door glass DG, that is, the sliding contact portion with the door glass DG that requires particularly durability is the other portion ( The portion is not thicker than the end face of the door glass DG. In other words, the portion that is hardly in contact with the door glass DG is configured to be thinner than the sliding contact portion with the door glass DG. For this reason, durability can be aimed at, ensuring the flexibility of glass run 1. Therefore, for example, by sticking the thick PE tape 21 to the entire inner surface of the base portion 14, the rigidity of the glass run 1 becomes higher than necessary, and the workability of attaching the glass run 1 is lowered. Such a fear can be suppressed. Moreover, compared with the case where the thick PE tape 21 is stuck on the entire inner surface of the base portion 14, the amount of the material (polyethylene resin) constituting the PE tape 21 can be suppressed, and the increase in cost can be suppressed. be able to.

  In addition, the PE tape 21 includes a protruding portion 23 that protrudes toward the base portion 14 corresponding to the portion that is in sliding contact with the door glass DG, so that the portion that is in sliding contact with the door glass DG is configured to be thick. In addition, the base portion 14 has a thin portion 31 corresponding to the protruding portion 23 and has a concave shape. Thus, even if the PE tape 21 is partially thickened as in the present embodiment by forming the affixing surface of the PE tape 21 and the inner surface of the base portion 14 facing each other, The surface, that is, the glass sliding surface can be a flat surface without a step. Thereby, the malfunction resulting from a level | step difference being formed in a glass sliding surface can be prevented.

  In addition, the PE tape 21 (the thin portion of the PE tape 21) is attached to the inner surface of the base portion 14 not only at the portion where the door glass DG is in sliding contact but also at other portions. For this reason, the malfunction resulting from the inner surface of the base part 14 being exposed can be prevented.

  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 main body 11 and the seal lips 12 and 13 are made of EPDM, but may be made of another material such as TPO. For example, when the main body part 11 (base part 14) is made of TPO, the base part 14 and the PE tape 21 (or an olefin-based material corresponding thereto) can be simultaneously formed by extrusion molding. In this case, for example, the work for attaching the PE tape 21 to the base portion 14 can be omitted, and as a result, the work efficiency can be improved.

  Further, since the base portion 14 is made of TPO, the PE tape 21 can be firmly bonded (thermal bonding) to the base portion 14. Therefore, the possibility that the PE tape 21 is peeled off from the base portion 14 can be prevented.

  (B) In the above embodiment, the protruding portion 23 is integrally formed with the PE tape 21, but it is not particularly limited to such a configuration. For example, as shown in FIG. 3, the PE tape 41 is a flat embedded tape 42 that is attached to the thin portion 31, and is attached to the embedded tape 42 so as to be wider and flatter than the embedded tape 42. The surface tape 43 may be provided.

  In this case, since the embedding tape 42 is not exposed on the surface, if it has a predetermined hardness, the embedding tape 42 is configured using a material that does not contain a sliding component for improving slidability, a recycled material, or the like. can do. As a result, cost reduction and resource saving can be achieved.

  (C) In the above embodiment, the PE tape 21 made of polyethylene resin is attached to the base portion 14, but is not particularly limited to such a configuration, and the base portion 14 is more than the base portion 14. The sliding layer which consists of a hard material should just be formed. However, the sliding layer is preferably composed of a solid material made of an olefin-based composition such as PP or TPO.

  (D) The PE tape 21 in the above embodiment may be attached by an operator's hand using an adhesive or the like. When the step portion is formed on the surface of the PE tape 21 as in the above embodiment, the step portion formed on the surface of the PE tape 21 and the base portion when the PE tape 21 is attached. In order to correspond to the step portion formed on the inner surface of 14, the operator sticks while confirming the sticking surface of the PE tape 21. On the other hand, in the case of adopting the configuration of (b) above, the flat embedding tape 42 corresponding to the thin portion 31 of the base portion 14 is first pasted, and then the flat surface is placed on the embedding tape 42. Since the tape 43 is attached, it is not necessary to confirm the application surface of the PE tape 21 (the embedded tape 42 and the surface tape 43) when the PE tape 21 (the embedded tape 42 and the surface tape 43) is applied. As a result, the workability of sticking is improved.

  (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 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, 21 ... PE tape, 23 ... projection, 31 ... thin wall, DG ... door glass, DS ... sash, W ... glass opening.

Claims (3)

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,
At least on the inner surface of the base portion corresponding to the vertical side portion of the door glass, a sliding layer made of a material harder than the base portion is provided,
The sliding layer is formed on the base side so that a portion set to be in sliding contact with the end surface of the door glass is thicker than a portion not set to face the end surface of the door glass. With a raised protrusion
The glass run is characterized in that the base portion is configured such that a portion of the inner surface corresponding to the protruding portion is recessed. The base is made of an olefinic thermoplastic elastomer,
The sliding layer is composed of an olefin-based composition,
The glass run according to claim 1, wherein the base portion and the sliding layer are simultaneously formed by extrusion molding. 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,
At least on the inner surface of the base portion corresponding to the vertical side portion of the door glass, a sliding layer made of a material harder than the base portion is provided,
The sliding layer has a flat embedded tape that is attached to the base portion corresponding to a portion that is set so as to be in sliding contact with the end surface of the door glass, and is laminated on the embedded tape. A surface tape that is wider and flatter than the buried tape,
The glass run is characterized in that the base portion is configured such that a portion of the inner surface to which the embedded tape is attached is recessed.

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