JP4674754B2 - Manufacturing method of glass run channel - Google Patents

Description

  The present invention relates to a glass run channel that is mounted along a window frame of a vehicle and guides sliding movement of the window glass, and a manufacturing method thereof.

  In general, the window frame structure of an automobile is configured so that a long glass run channel is mounted along the inner peripheral edge of the window frame, and the window glass moves up and down (slide movement) by the glass run channel. . The conventional glass run channel is made of an elastic polymer material such as rubber, and integrally forms the base portion facing the end face of the window glass and the side walls and the like on the vehicle interior and the vehicle exterior rising from both sides in the width direction of the base portion. However, there is one that is formed in a groove shape that guides the window glass up and down movement, but the base part is in contact with the end face of the window glass and rubs when the window glass moves up and down, so that the base part is easily worn was there.

As a countermeasure against this, as described in Patent Document 1 (Japanese Patent Application Laid-Open No. 10-71649), a resin tape is welded and bonded to the surface of the base portion of the glass run channel, thereby reducing the wear resistance of the base portion. There is something that was made to improve.
Japanese Patent Laid-Open No. 10-71649 (page 3, etc.)

  However, in the technique of the above-mentioned Patent Document 1, since the surface of the base portion of the glass run channel and the lower surface of the low friction material portion such as a resin tape are simply brought into close contact with each other by welding, the base portion (glass If the compatibility between the material forming the run channel main body) and the material forming the low friction material part is not high, the bonding strength due to thermal welding (sometimes referred to as thermal fusion) between the base part and the low friction material part is high. There is a possibility that the low-friction material part may be peeled off from the base part due to repeated lifting and lowering movement of the window glass. Thereby, since the material forming the low friction material portion is limited to a material highly compatible with the material forming the base portion, the degree of freedom of selection of the material forming the low friction material portion is narrowed, There was a disadvantage that a wide range of materials could not be selected in consideration of cost and moldability.

  The present invention has been made in consideration of these circumstances. Therefore, the object of the present invention is to sufficiently secure the bonding strength between the base portion of the glass run channel and the low friction material portion, and to reduce the It is to be able to expand the degree of freedom of selection of the material forming the friction material part.

The invention according to claim 1 is a long glass run channel that is mounted along a window frame of a vehicle and guides the sliding movement of the window glass, and is formed of an elastically deformable polymer material. A channel body having a base portion disposed at a position facing the end face and side wall portions rising from both sides in the width direction of the base portion; and a polymer material having a lower coefficient of friction with respect to the window glass than the channel body. In a method of manufacturing a glass run channel having a low friction material portion welded and bonded to at least a portion facing the end face of the window glass in the base portion, a bonding portion with a low friction material portion in the base portion has at least one concave strip and convex extending in the longitudinal direction, by applying a pressing force to the low-friction material part by at least one of the concave strip and convex Article Prepare the channel body pressing joint is provided, the elastic deformation step of the inner surface side of the base bottom portion to bend the basal part such that the convex or concave in the width direction by a predetermined external force the base portion, the base portion A low-friction material part at the pressure-bonding part due to the elastic restoring force of the base part by removing the external force after the welding-joining process by laminating and joining the low-friction material part on the base part in a curved state An external force removing process is performed in which a pressing force is applied to the . If it does in this way, the glass run channel of the present invention can be manufactured efficiently. In addition, since the pressing force can act on the bonding interface between the base part and the low friction material part by the elastic joint force of the base part, the material forming the base part (channel body) and the low friction material part Even if the compatibility with the material forming the material is not so high, the bonding strength between the base portion and the low friction material portion can be increased. As a result, the bonding strength between the base portion and the low friction material portion can be sufficiently ensured, and the degree of freedom in selecting the material for forming the low friction material portion can be expanded. A wide range of materials can be selected in consideration.

According to a second aspect of the present invention, a concave portion extending along the longitudinal direction of the base portion is formed in the press bonding portion, and the base portion is expanded in the width direction in the elastic deformation step. The low friction material part is welded and joined so as to fill the concave part of the press joint part in the welding and joining process, and the concave part of the press joint part is reduced in the width direction by the elastic restoring force of the base part in the external force removing process. By doing so, it is preferable to apply a pressing force to the low friction material portion. If it does in this way, pressing force can be made to act on the joining interface of a base part and a low friction material part with the concave strip of a press joining part, and the joint strength of a base part and a low friction material part can be raised. .

In this case, as in claim 3, concave pressing junction may be formed in cross section substantially U-shaped or cross-section substantially V-shape, as claimed in claim 4, pressing the joint The concave stripe is preferably formed so that the width dimension of the inlet portion is narrower than the bottom portion. In this way, it is possible to make it difficult for the low friction material portion that has entered the recess of the press bonding portion to come out of the recess, and it is possible to further increase the bonding strength between the base portion and the low friction material portion.

Furthermore, as according to claim 5, the pressing joint to form a plurality of ridges extending along a longitudinal direction of the base portion, closer together a plurality of projections of the pressing joints in the width direction in the elastic deformation step The base part is elastically deformed, and the low friction material part is welded and bonded so as to cover the portion where the convex stripes of the press-bonding part are formed in the welding and joining process, and the pressure-joining is performed by the elastic restoring force of the base part in the external force removing process. A pressing force may be applied to the low-friction material portion by expanding the interval between the protrusions of the portion in the width direction. If it does in this way, a pressing force can be made to act on the joining interface of a base part and a low friction material part with the convex strip of a press joining part, and the joint strength of a base part and a low friction material part can be raised. .

  Hereinafter, the best mode for carrying out the present invention will be described using four Examples 1 to 4.

A first embodiment of the present invention will be described with reference to FIGS.
First, a schematic configuration of a sash type door 11 on the front side of an automobile will be described with reference to FIG. A window frame (sash) 12 is integrally attached to the sash type door 11 by welding or the like, and a long glass run channel 13 made of a polymer material is attached to the window frame 12 on the inner peripheral side of the window frame 12. The glass run channel 13 guides the window glass 14 to move up and down (slide movement).

  The window frame 12 includes a front window frame portion 15 and a rear window frame portion 16 that extend in a direction substantially parallel to the up-and-down movement direction of the window glass 14, and an upper window frame portion 17 that faces the upper end surface of the window glass 14. The upper window frame portion 17 is formed with an inclined portion 17a inclined corresponding to the inclination of the front pillar and a horizontal portion 17b extending substantially in the horizontal direction corresponding to the roof.

  On the other hand, the glass run channel 13 includes a front glass run channel portion 19 attached along the front window frame portion 15, a rear glass run channel portion 20 attached along the rear window frame portion 16, and an upper window. An upper glass run channel portion 21 mounted along the frame portion 17 (from the inclined portion 17a to the horizontal portion 17b), a front corner portion 22 that joins the upper glass run channel portion 21 and the front glass run channel portion 19, and an upper side The glass run channel portion 21 and the rear glass run channel portion 20 are constituted by a rear corner portion 23 for joining.

  Next, specific configurations of the window frame 12 and the glass run channel 13 will be described. However, the main parts of the window frame portions 15 to 17 of the window frame 12 have substantially the same configuration, and the glass run channel portions 19 to 21 of the glass run channel 13 have substantially the same configuration. Are used to explain the configuration of the rear window frame portion 16 and the rear glass run channel portion 20, and the description of the configurations of the front and upper window frame portions 15 and 17 and the front and upper glass run channel portions 19 and 21 is omitted. To do.

  As shown in FIG. 2, the window frame 12 (rear window frame portion 16) is a groove having a substantially U-shaped cross section for mounting the glass run channel 13 on the inner peripheral side, for example, by bending a metal strip material. And a door seal material holding portion 25 for holding a door seal material (not shown) on the outer peripheral side is formed along the longitudinal direction, and the width direction of the groove-like portion 24 is formed. A portion in which a plurality of metal strip materials are folded at a substantially central portion is fixed by spot welding or the like at a predetermined interval in the longitudinal direction. Locking portions 26 and 27 for locking the glass run channel 13 are formed on the inner side wall and the outer side wall of the groove-shaped portion 24, respectively.

  On the other hand, the channel main body 28 of the glass run channel 13 (rear glass run channel portion 20) is formed by, for example, a base portion 29 facing the end surface of the window glass 14 by extrusion molding of an elastic polymer material such as rubber mainly composed of EPDM. The vehicle interior side wall portion 30 and the vehicle exterior side wall portion 31 extending so as to rise from both ends in the width direction of the base portion 29, and the center portion in the width direction of the base portion 29 from the front end sides of the side wall portions 30 and 31, respectively. The inner side seal lip 32 and the outer side seal lip 33 projecting toward the side and projecting toward the opposite side of the seal lips 32, 33 from the front end side of the side walls 30, 31 respectively. The inner side lip 34 and the outer side lip 35 and the side walls 30, 31 from the base side toward the width direction outside of the base part 29. A locking piece 36 and the engaging piece 37 of the exterior of the vehicle interior side to output, and a plurality of outer circumferential side ribs 38 projecting toward the outer peripheral side from the outer surface of the base portion 29 is integrally formed.

  When the glass run channel 13 is mounted along the groove-like portion 24 of the window frame 12, the inner side of the glass run channel 13 is connected to the inner locking portion 26 and the outer locking portion 27 of the window frame 12, respectively. By locking the locking piece 36 and the locking piece 37 on the outside of the vehicle, the glass run channel 13 is held in the groove-like portion 24 of the window frame 12. Further, the seal lip 32 on the vehicle interior side and the seal lip 33 on the vehicle exterior side of the glass run channel 13 are in contact with the surface of the window glass 14, thereby holding the window glass 14 and the window frame 12 and the window glass 14. It is designed to seal the gap.

  Further, low friction material layers 39 and 40 are formed on the surfaces of the seal lips 32 and 33 (that is, the portions in contact with the window glass 14), respectively. The low friction material layers 39 and 40 are formed of a material whose friction coefficient with respect to the window glass 14 is lower than that of the channel main body 28 (base portion 29 or the like), and the glass run channel 13 (seal lip 32) when the window glass 14 moves. , 33) and the window glass 14, the frictional force (sliding resistance) is reduced.

  Furthermore, adhesion preventing layers 41 and 42 for preventing the seal lips 32 and 33 from adhering to the side walls 30 and 31 are formed on the inner surfaces of the side walls 30 and 31. The adhesion preventing layers 41 and 42 are formed of the same material as the low friction material layers 39 and 40. An adhesion preventing layer may be formed on the back surfaces of the seal lips 32 and 33. In addition, by roughening at least one of the inner surfaces of the side wall portions 30 and 31 and the back surfaces of the seal lips 32 and 33 (into a concavo-convex shape), the contact area is reduced and the seal lips 32 and 33 are formed on the side wall portions. You may make it prevent adhering to 30,31. These low-friction material layers 39 and 40 and adhesion preventing layers 41 and 42 are firmly fused and integrated with the channel main body 28 by coextrusion molding.

  Further, the low friction material portion 43 is welded and joined along the longitudinal direction of the base portion 29 to the inner surface of the base portion 29 (that is, the portion in contact with the end surface of the window glass 14). The low friction material portion 43 is formed by extrusion molding of a thermoplastic polymer material having a friction coefficient with respect to the window glass 14 lower than that of the channel main body 28 (base portion 36 or the like), and the glass run channel 13 is moved when the window glass 14 moves. It plays the role of reducing the frictional force (sliding resistance) generated between the (base portion 29) and the window glass 14.

  The thermoplastic polymer material that forms the low-friction material portion 43 is a thermoplastic polymer material that can be heat-welded with the rubber that forms the channel body 28, and itself has a lower coefficient of friction than the rubber that forms the channel body 28. A thermoplastic polymer material obtained by kneading a plastic polymer material or a material having a lower coefficient of friction than the rubber forming the channel body 28 is used. Here, as the thermoplastic polymer material having a lower coefficient of friction than the rubber forming the channel body 28, for example, PE resin (polyethylene resin), PP resin (polypropylene resin), TPO (polyolefin thermoplastic elastomer), SBC ( Styrenic thermoplastic elastomer), PVC resin (polyvinyl chloride resin), or the like can be used. Further, as the thermoplastic polymer material kneaded with a material having a lower friction coefficient than the rubber forming the channel body 28, for example, a lubricating material such as a high molecular weight PE resin, an ultra high molecular weight PE resin, a fluororesin, a silicone resin or the like is used. A thermoplastic polymer material in which at least one is kneaded can be used.

In addition, a press bonding portion 44 for applying a pressing force to the low friction material portion 43 is provided at a portion of the base portion 29 where the low friction material portion 43 is bonded. This pressing junction 44, a plurality of concave Article 4 5 extending along a longitudinal direction of the base portion 29 is formed, the ridges 4 6 is formed between the concave 45. The concave strip 45 of the press bonding portion 44 is formed in a substantially trapezoidal shape (a dovetail groove shape) in which the width of the inlet portion is narrower than the bottom portion.

  On the other hand, a protrusion 47 corresponding to the recess 45 of the press bonding portion 44 is formed at a joint portion of the low friction material portion 43 with the base portion 29, and the low friction material portion is formed on the recess 45 of the press bonding portion 44. 43 ridges 47 have entered, and the ridges 46 of the press bonding portion 44 have digged between the ridges 47 of the low friction material portion 43.

  In the first embodiment, when the glass run channel 13 is manufactured, as shown in FIG. 6, a predetermined external force is applied to the base portion 29 and the side wall portions 30 and 31 of the channel main body 28 to form the concave strip 45 of the pressing joint portion 44. In the state in which the base portion 29 is elastically deformed so as to expand in the width direction, the low friction material portion 43 is laminated on the base portion 29, and the concave stripe 45 of the press joint portion 44 is formed on the convex portion of the low friction material portion 43. The low friction material portion 43 is welded and joined so as to be filled with 47. Thereafter, as shown in FIG. 7, the external force applied to the base portion 29 and the side wall portions 30, 31 is removed, and the concave strip 45 of the pressing joint portion 44 is reduced in the width direction by the elastic restoring force of the base portion 29. As a result, a pressing force is applied to the protrusion 47 of the low friction material portion 43 by the recess 45 of the press bonding portion 44, and the protrusion 46 of the press bonding portion 44 is interposed between the protrusion 47 of the low friction material portion 43. I'm going to bite.

  In addition, as shown in FIG. 2, by forming concave grooves 48 having a substantially V-shaped cross section or a substantially U-shaped cross section in a plurality of locations on the outer surface of the base portion 29 so as to extend along the longitudinal direction, Thin portions are provided at a plurality of locations of the portion 29, and the thin portions can easily perform elastic deformation when the low friction material portion 43 is welded and joined.

  Next, the manufacturing method of the glass run channel 13 is demonstrated based on FIG. 3 thru | or FIG. 5 to 7, illustration of the outer peripheral ridge 38, the low friction material layers 39 and 40, the adhesion preventing layers 41 and 42, and the concave groove 48 is omitted.

  As shown in FIG. 3, when manufacturing the glass run channel 13, a channel main body formation process is first performed. In this channel body molding step, a rubber material or the like for forming the channel body 28 is supplied to the extrusion molding machine 50 to extrude the linear channel body continuum S with the extrusion molding machine 50 and the low friction material layer 39. , 40 and adhesion preventing layers 41, 42 are co-extruded and thermally fused to the continuous channel body S to be integrated. Thereafter, the unvulcanized channel body continuous body S is passed through the vulcanizing tank 51, and the unvulcanized channel body continuous body S is heated and vulcanized in the vulcanizing tank 51.

  After executing the channel body forming step, the low friction material portion forming step is executed, and the elastic deformation step and the welding and joining step are executed. As shown in FIG. 4, the extrusion molding machine 52 used in the low friction material part molding process is provided integrally with the welding joining machine 54 used in the elastic deformation process and the welding joining process, and is an extrusion die of the extrusion molding machine 52. 53 is arranged in the welding machine 54.

Further, in the welding and bonding machine 54, preliminary deformation rollers 55 and 56, deformation rollers 57 and 58, and pressure-bonding rollers 59 and 60 are arranged in this order from the upstream side.
As shown in FIG. 6, the deforming rollers 57 and 58 feed the channel body continuous body S to the predetermined welding joint shape (the side walls 30 and 31 are spread outward and the base portion). 29 is a roller for elastically deforming the base portion 29 in the width direction so that the inner surface side of 29 is a convex surface, and the upper deformation roller 57 and the lower deformation roller 58 are channel body continuous bodies. S is arranged so as to sandwich S from above and below. The rotation shafts 61 and 62 of the deformation rollers 57 and 58 are connected via gears 63 and 64, and the rotation shaft 62 of the lower deformation roller 58 is rotationally driven by a drive motor (not shown). The deformation rollers 57 and 58 are rotationally driven at the same peripheral speed in the direction in which the channel body continuous body S is sent out.

  The upper deformation roller 57 is divided into left and right rollers 57a and 57b so as to avoid the base portion 29 of the channel body continuum S, and presses portions other than the base portion 29 of the channel body continuum S. . On the outer periphery of one roller 57a, there are a pressing portion 65 for pressing the side wall portion 30 and the seal lip 32 on the vehicle inner side of the channel body continuous body S from above, and a positioning portion 66 for positioning the vehicle inner end surface of the base portion 29. Formed on the outer peripheral portion of the other roller 57b are a pressing portion 67 for pressing the side wall portion 31 and the seal lip 33 on the vehicle outer side of the channel body continuous body S from above, and a positioning portion for positioning the vehicle outer end surface of the base portion 29. 68 is formed. Further, the exit portion of the extrusion die 53 of the extrusion molding machine 52 is disposed in the space between the left and right rollers 57 a and 57 b of the upper deformation roller 57.

  On the other hand, on the outer peripheral portion of the lower deformation roller 58, a pressing portion 69 for pressing the base portion 29 of the channel body continuous body S from below, a pressing portion 70 for pressing the side wall portion 30 on the vehicle inner side from below, A pressing portion 71 that presses the side wall portion 31 from below is formed. In addition, as a slip stopper when the channel body continuous body S is sent out, an uneven pattern may be formed on the surface of the pressing portion 69 of the lower deformation roller 58 by knurling or the like.

  The channel main body continuous body S is sandwiched between the upper deformation roller 57 and the lower deformation roller 58, so that the cross-sectional shape of the channel main body continuous body S becomes the shape for welding and joining (each side wall portion 30, 31 is expanded outward and elastically deformed into a shape in which the base portion 29 is curved in the width direction so that the inner surface side of the base portion 29 becomes a convex surface.

  As shown in FIG. 4, the preliminary deformation rollers 55 and 56 are arranged on the upstream side of the above-described deformation rollers 57 and 58, and the channel body continuum S is moved to a predetermined intermediate position while the channel body continuum S is sent out. 5 is a roller for preliminarily deforming into a shape (intermediate shape between the shape in a free state shown in FIG. 5 and the shape for welding and joining shown in FIG. 6), and is an upper predeformation roller 55 and a lower predeformation roller 56 are arranged so as to sandwich the channel body continuous body S from above and below. The rotation shafts 72 and 73 of the preliminary deformation rollers 55 and 56 are connected via gears (not shown), and are respectively connected to the deformation rollers 57 and 58 by a common drive motor or a dedicated drive motor (not shown). The preliminary deformation rollers 55 and 56 are rotationally driven in the direction in which the channel body continuous body S is sent out.

  Further, the pressure-bonding rollers 59 and 60 are arranged on the downstream side of the deformation rollers 57 and 58, and the channel main body continuous body S is elastically deformed into the shape for welding and joining while the channel main body continuous body S is sent out. It is a roller for causing the low friction material portion 43 to be crimped to the base portion 29, and an upper crimping roller 59 and a lower crimping roller 60 are disposed so as to sandwich the channel body continuous body S from above and below. The rotation shafts 74 and 75 of the pressure-bonding rollers 59 and 60 are connected via gears (not shown), and the pressure-bonding rollers 57 and 58 and the pressure-reducing rollers 57 and 58 are each pressure-bonded by a common drive motor or a dedicated drive motor (not shown). The rollers 59 and 60 are rotationally driven in the direction of feeding out the channel body continuous body S.

  In the low friction material part forming step, the thermoplastic polymer material for forming the low friction material part 43 is supplied to the extruder 52, and the low friction material part 43 is continuously extruded by the extrusion die 53 of the extruder 52. To do. At this time, as shown in FIG. 6, a protrusion 47 corresponding to the recess 45 of the press bonding portion 44 is formed at the bonding portion of the low friction material portion 43 with the base portion 29, thereby performing welding bonding described later. In the process, the bonding surface of the low friction material portion 43 can be favorably bonded to the bonding surface (press bonding portion 44) of the base portion 29.

  On the other hand, in the elastic deformation process, while the channel body continuum S is sent out by the preliminary deformation rollers 55 and 56 of the welding joint machine 54, an external force is applied to the base portion 29 and the side wall portions 30 and 31, so that the channel body continuum S is intermediate. After preliminarily deforming into the shape, as shown in FIG. 6, external force is applied to the base portion 29 and the side wall portions 30, 31 while feeding the channel body continuous body S with the deformation rollers 57, 58 of the welding joint machine 54. In addition, the channel body continuous body S is elastically deformed into the shape for welding and bonding, so that the concave strip 45 of the press bonding portion 44 is expanded in the width direction. At this time, the concave strip 45 of the press bonding portion 44 is preferably expanded so that the width dimension of the inlet portion is substantially the same as or wider than the width dimension of the bottom portion.

  Further, in the welding and bonding step, the low friction material portion 43 supplied from the extrusion die 53 of the extrusion molding machine 52 in a state where the channel body continuous body S is elastically deformed into the shape for welding and bonding by the deformation rollers 57 and 58. The ridges 47 of the low friction material portion 43 are inserted into the ridges 45 of the press bonding portion 44 by being laminated on the base portion 29. Here, as in the first embodiment, when the elastic deformation step and the welding and joining step are continuously performed after the channel body forming step, heat at the time of forming the channel body continuous body S (unvulcanized channel body). (The heat generated when the continuum S is vulcanized) is dissipated and can proceed to the welding and joining process before the temperature falls below a predetermined temperature. It is possible to prevent the solidification accompanying the rapid temperature drop of the joint surface of the material part 43 and to maintain the softened state or the molten state well.

  Thereafter, the channel body continuum S is elastically deformed into the shape for welding and joining by applying external force to the base portion 29 and the side wall portions 30 and 31 while feeding the channel body continuum S by the pressure rollers 59 and 60. Then, pressure is applied to the low friction material portion 43 from above and the low friction material portion 43 is pressure-bonded to the base portion 29, so that the concave stripe 45 of the press bonding portion 44 is filled with the convex stripe 47 of the low friction material portion 43. The low friction material portion 43 is welded and joined.

  After execution of this welding and joining step, the channel body continuum S is sent out from the pressure-bonding rollers 59, 60, so that the external force applied to the base portion 29 and the side wall portions 30, 31 by the pressure-bonding rollers 59, 60 is removed. It becomes an external force removal process. In this external force removing step, as shown in FIG. 7, the external force applied to the base portion 29 and the side wall portions 30 and 31 is removed by the pressure-bonding rollers 59 and 60, so that the channel body continuum S has an elastic restoring force. To return to the original shape (the shape in a free state where no external force is applied). At that time, the concave strip 45 of the press bonding portion 44 is reduced in the width direction by the elastic restoring force of the base portion 29, so that the convex strip 47 of the low friction material portion 43 is extended in the width direction by the concave strip 45 of the press bonding portion 44. A pressing force is applied, and the ridge 46 of the pressing joint portion 44 bites between the ridges 47 of the low friction material portion 43.

  After forming the long glass run channel continuous body T in this way, as shown in FIG. 3, the process proceeds to a cooling step, and the glass run channel continuous body T is passed through the cooling tank 76, and this cooling tank 76 is passed. The low friction material portion 43 is cooled and solidified. Thereafter, the process proceeds to a cutting step, and the glass run channel continuum T is pulled by the taker 77 while the glass run channel continuum T is cut to a predetermined length by the cutter 78 (the length of the front glass run channel portion 19). Or the length dimension of the rear glass run channel section 20 or the length dimension of the upper glass run channel section 21), and the front glass run channel section 19 or the rear glass run channel section 20 or the upper glass run channel section 21. Form.

  Then, it progresses to a joining process, and the front end part of the upper glass run channel part 21 and the upper end part of the front glass run channel part 19 are crossed at a predetermined angle in an injection mold (not shown) for forming the front corner part 22. In this state, an elastic polymer material is injected into the injection mold to form the front corner portion 22, so that the upper glass run channel portion 21 and the front glass run channel portion 19 are connected via the front corner portion 22. And join. Furthermore, the rear end portion of the upper glass run channel portion 21 and the upper end portion of the rear glass run channel portion 20 are set to intersect with each other at a predetermined angle in an injection mold (not shown) for forming the rear corner portion 23. In this state, an elastic polymer material is injected into the injection mold to form the rear corner portion 23, so that the upper glass run channel portion 21 and the rear glass run channel portion 20 are connected via the rear corner portion 23. And join. Thereby, the manufacture of the glass run channel 13 is completed.

  In the first embodiment described above, a pressing joint 44 is provided at a joint portion of the base portion 29 of the glass run channel 13 with the low friction material portion 43, and the base portion 29 is elastically deformed by applying an external force. After the low friction material portion 43 is welded and joined to the base portion 29, the external force is released, and a pressing force is applied to the low friction material portion 43 by the recess 45 of the press joint portion 44 by the elastic restoring force of the base portion 29. As a result, it is possible to apply a pressing force to the bonding interface between the base portion 29 and the low friction material portion 43 by the concave strip 45 of the press bonding portion 44, and the material for forming the base portion 29 (run channel body 28) is low. Even if the compatibility with the material forming the friction material portion 43 is not so high, the bonding strength between the base portion 29 and the low friction material portion 43 can be increased. As a result, the bonding strength between the base portion 29 and the low friction material portion 43 can be sufficiently secured, and the degree of freedom of selection of the material for forming the low friction material portion 43 can be expanded, and the compatibility is mutually improved. A wide variety of materials can be selected in consideration of higher slipperiness, cost, moldability, etc. without being restricted by high materials.

  Furthermore, in the first embodiment, since the plurality of concave strips 45 extending along the longitudinal direction of the base portion 29 are formed in the press joint portion 44, the plurality of concave strips 45 formed in the press joint portion 44 are used. A pressing force can be applied to the bonding interface between the base portion 29 and the low friction material portion 43, and the bonding strength between the base portion 29 and the low friction material portion 43 can be reliably increased.

  Moreover, in the first embodiment, the protrusions 47 of the low friction material portion 43 enter the recesses 45 of the press bonding portion 44, and the protrusions 46 of the press bonding portion 44 are between the protrusions 47 of the low friction material portion 43. Since it bites in, the base portion 29 is also caused by the anchor action of the low friction material portion 43 that has entered the recess 45 of the press bonding portion 44 and the anchor action of the protrusion 46 of the press bonding portion 44 that has bitten into the low friction material portion 43. And the bonding strength between the low friction material portion 43 can be increased.

  Furthermore, in the first embodiment, the concave strip 45 of the press bonding portion 44 is formed in a substantially trapezoidal cross-sectional shape in which the width dimension of the inlet portion is narrower than the bottom portion. It is possible to make it difficult for the low friction material portion 43 to come out of the recess 45, and to further increase the bonding strength between the base portion 29 and the low friction material portion 43.

  Further, in the first embodiment, in the low friction material portion molding step, the protrusion 47 corresponding to the recess 45 of the press bonding portion 44 is formed in the bonding portion of the low friction material portion 43 with the base portion 29. Therefore, in the welding and joining step, the protrusion 47 of the low friction material portion 43 is surely inserted into the recess 45 of the press bonding portion 44, and the joining surface of the low friction material portion 43 is changed to the joining surface ( It is possible to ensure close contact with the press bonding portion 44).

  By the way, when the low friction material part 43 is welded and joined in a state in which the channel body continuum S is stretched in the moving direction (longitudinal direction), the channel body continuum S contracts and returns to its original shape. There is a possibility of poor weld joints.

  Therefore, in the first embodiment, in the elastic deformation step, the base portion 29 is elastically deformed while the channel body continuous body S is being fed by the preliminary deformation rollers 55 and 56 and the deformation rollers 57 and 58 of the welding and bonding machine 54. As a result, the channel body continuum S (base portion 29) is elastically deformed into the shape for welding and joining while preventing the channel body continuum S (base portion 29) from being extended by receiving a tensile force in the moving direction. Thus, it is possible to proceed to the welding and joining step, and it is possible to prevent the welding failure of the low friction material portion 43.

  Moreover, in the first embodiment, in the elastic deformation process, the channel body continuous body S is elastically deformed into the shape for welding and joining by applying an external force to the base portion 29 and the side wall portions 30 and 31. The body S (base portion 29) can be reliably elastically deformed into the shape for welding and bonding.

  In the first embodiment, the glass run channel portions on the front side, the rear side, and the upper side are formed from the glass run channel continuous body T having the same cross section and joined via the corner portion. For example, the front side and the rear side It is also possible to form a glass run channel part from a glass run channel continuous body T having the same cross section, and form an upper glass run channel part from a glass run channel continuous body having a different cross section, and join these via a corner part. is there.

  Embodiments 2 to 4 of the present invention will be described below with reference to FIGS. However, substantially the same parts as those in the first embodiment are denoted by the same reference numerals, and the description will be simplified. The parts different from the first embodiment will be mainly described.

As shown in FIG. 8, in the second embodiment of the present invention, the pressing junction 79 of the base portion 29, the wide concave Article 81 the entire lower portion of the low friction material portion 80 enters is formed. Engagement protrusions 82 are formed on both sides of the wide recess 81 so as to project toward the center in the width direction. The width of the entrance is narrower than the bottom of the wide recess 81. On the other hand, at both ends in the width direction of the low friction material portion 80, locked portions 83 that protrude outward in the width direction are formed.

  At the time of manufacturing the glass run channel 13, the base portion 29 is elastically deformed so that the wide concave strip 81 of the press bonding portion 79 is expanded in the width direction by applying a predetermined external force to the base portion 29 and the side wall portions 30 and 31. In this state (a state in which the base portion 29 is curved in the width direction so that the inner surface side of the base portion 29 becomes a convex surface), the low friction material portion 80 is laminated on the base portion 29 and the wide groove 81 of the press bonding portion 79 is stacked. The low-friction material portion 80 is welded and joined so that the lower portion of the low-friction material portion 80 is filled. Thereafter, the external force applied to the base portion 29 and the side wall portions 30 and 31 is removed, and the wide concave stripes 81 that have spread in the width direction of the press bonding portion 79 are reduced by the elastic restoring force of the base portion 29. In addition, a pressing force is applied across the entire lower portion of the low friction material portion 80 with the wide concave strip 81 of the press bonding portion 79, and the locking protrusions 82 of the press bonding portion 79 are engaged with the locked portion of the low friction material portion 80. 83 to be locked.

  In the second embodiment described above, a pressing force can be applied to the bonding interface between the base portion 29 and the low friction material portion 80 by the wide concave stripe 81 of the pressing joint portion 79 and the pressing joint portion 79 is locked. The protruding piece 82 can be locked to the locked portion 83 of the low friction material portion 80, and the bonding strength between the base portion 29 and the low friction material portion 80 can be increased.

As shown in FIG. 9, in Example 3 of the present invention, the pressing junction 84 of the base portion 29, concave Article 8 5 of a plurality of cross section substantially V-shape is formed. On the other hand, in the joint portion of the low friction material portion 86 with the base portion 29, a plurality of substantially reverse V-shaped convex strips 87 corresponding to the concave strips 85 of the press joint portion 84 are formed. The convex line 87 of the low friction material part 86 enters the concave line 85 of 84.

  At the time of manufacturing the glass run channel 13, the base portion 29 was elastically deformed so that a predetermined external force was applied to the base portion 29 and the side wall portions 30, 31 to expand the concave strip 85 of the press bonding portion 84 in the width direction. In a state (a state in which the base portion 29 is curved in the width direction so that the inner surface side of the base portion 29 becomes a convex surface), the low friction material portion 86 is laminated on the base portion 29 to reduce the concave stripe 85 of the press bonding portion 84. The low friction material portion 86 is welded and joined so as to be filled with the ridges 87 of the friction material portion 86. Thereafter, the external force applied to the base portion 29 and the side wall portions 30 and 31 is removed, and the concave strip 85 of the press joint portion 84 is reduced in the width direction by the elastic restoring force of the base portion 29, whereby the press joint portion A pressing force is applied to the ridge 87 of the low friction material portion 86 by the 84 ridges 85.

Or also in the third embodiment described, it is possible to exert a pressing force on the bonding interface between the base portion 29 in the concave Article 85 of the pressing joint 84 and the low friction material 86, a base portion 29 a low friction material portion The bonding strength with 86 can be increased.

  In the third embodiment, a concave strip 85 having a substantially V-shaped cross section is formed in the pressing joint portion 84 of the base portion 29, and a convex strip 87 having a substantially inverted V-shaped cross section is formed in the low friction material portion 86. However, as in the modification shown in FIG. 10, a concave strip 85 having a substantially U-shaped cross section is formed in the pressing joint portion 84 of the base portion 29, and a substantially inverted U-shaped cross section is formed in the low friction material portion 86. The ridges 87 may be formed.

As shown in FIG. 11, in the fourth embodiment of the present invention, the pressing junction 88 of the base portion 29, the wide convex 8 9 are formed. The wide ridges 89 are formed in a substantially inverted trapezoidal cross section in which the width of the tip is wider than the base, and locking protrusions 90 are formed on both sides of the wide ridge 89, respectively. . Further, by forming a groove 48 having a substantially V-shaped cross section or a substantially U-shaped cross section on the surface of the wide ridge 89, a thin wall facilitating elastic deformation when the low friction material portion 91 is welded and joined. Is provided. On the other hand, at both ends in the width direction of the low friction material portion 91, locked portions 92 that protrude toward the center in the width direction are formed.

  At the time of manufacturing the glass run channel 13, the base portion 29 was elastically deformed so as to compress the wide protrusions 89 of the press bonding portion 88 in the width direction by applying a predetermined external force to the base portion 29 and the side wall portions 30 and 31. In a state (a state in which the base portion 29 is curved in the width direction so that the inner surface side of the base portion 29 is concave), the low friction material portion 91 is laminated on the base portion 29 to form the wide protrusions 89 of the press bonding portion 88. The low friction material portion 91 is welded and joined so as to be covered with the low friction material portion 91. Thereafter, the external force applied to the base portion 29 and the side wall portions 30 and 31 is removed, and the wide protrusions 89 of the press joint portion 88 are expanded in the width direction by the elastic restoring force of the base portion 29, thereby The wide protrusions 89 of the portion 88 cause a pressing force to act on both ends of the low friction material portion 91, and the locking protrusions 89 of the pressing joint portion 88 are locked to the locked portion 92 of the low friction material portion 91. It is like that.

  In the fourth embodiment described above, a pressing force can be applied to the bonding interface between the base portion 29 and the low friction material portion 91 by the wide ridges 89 of the pressing joint portion 88 and the pressing joint portion 88 is locked. The protrusion 89 can be locked to the locked portion 92 of the low friction material portion 91, and the bonding strength between the base portion 29 and the low friction material portion 91 can be increased.

  In each of the above Examples 1 to 4, the channel body forming process, the elastic deformation process, the welding and joining process, and the external force removing process are continuously executed in one production line. A channel body manufactured in advance in a factory may be prepared, and the elastic deformation process, the welding and joining process, and the external force removing process may be executed.

  Further, in each of the above Examples 1 to 4, the low friction material portion forming step was performed to form the bonding surface of the low friction material portion in a shape corresponding to the bonding surface of the base portion (press bonding portion). It is not necessary to form the bonding surface of the low friction material part in a shape corresponding to the bonding surface (press bonding part) of the base part in the low friction material part molding process, and the low friction material part is laminated and welded to the base part. When joining, the joining surface of the low friction material part may be plastically deformed into a shape corresponding to the shape of the joining surface (press joining part) of the base part. Furthermore, you may make it use the low friction material part previously manufactured in another manufacturing line or another factory.

  Further, in each of the above Examples 1 to 4, the channel body is formed of rubber, but the elastic polymer material forming the channel body is not limited to rubber, and thermoplastic elastomers such as TPO and SBC, PVC resin, and the like The channel body may be formed of the thermoplastic resin.

  The scope of application of the present invention is not limited to the glass run channel attached to the window frame of the sash door, but the glass run channel attached to the window frame of the panel door or the glass run channel attached to the window frame other than the door. The present invention may be applied to.

It is a schematic block diagram of the sash door in Example 1 of this invention. It is AA sectional drawing of FIG. It is a schematic block diagram of the manufacturing apparatus of a glass run channel. It is sectional drawing of an extrusion molding machine and a welding joining machine. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is DD sectional drawing of FIG. 4 is a sectional view of a glass run channel of Example 2. FIG. 6 is a sectional view of a glass run channel of Example 3. FIG. 10 is a cross-sectional view of a glass run channel showing a modification of Example 3. FIG. 6 is a cross-sectional view of a glass run channel of Example 4. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 12 ... Window frame, 13 ... Glass run channel, 14 ... Window glass, 28 ... Channel main body, 29 ... Base part, 30 ... Side wall part inside a vehicle, 31 ... Side wall part outside a vehicle, 43 ... Low friction material part, 44 ... pressing junction 45 ... concave Article 46 ... convex, 50 ... extruder, 51 ... vulcanizing bath, 52 ... extruder, 54 ... welding joining machine, 55, 56 ... pre-deformation rollers, 57, 58 ... deformation rollers, 59 and 60 ... crimping roller, 79 ... pressing junction 80 ... low friction material portion, 81 ... wide concave Article 82 ... engaging projection piece, 83 ..., engaging portion, 84 ... pressing the joint, 85 ... concave Article 86 ... low-friction material portion, 87 ... ridge, 88 ... pressing junction, 89 ... wide convex, 90 ... locking projection, 91 ... low-friction material portion, 92 ... to be Locking part

Claims (5)

A long glass run channel that is mounted along the window frame of a vehicle and guides the sliding movement of the window glass, is formed of an elastically deformable polymer material, and is disposed at a position facing the end face of the window glass. A channel body having a base portion and sidewall portions rising from both sides in the width direction of the base portion, and a polymer material having a lower coefficient of friction with respect to the window glass than the channel body, and at least the window of the base portion. In a method of manufacturing a glass run channel having a low friction material portion welded and bonded to a portion facing an end face of glass,
Push the joint portion between the low friction material portion of the base unit has at least one concave strip and convex longitudinally extending, the low friction material portion by at least one of the concave strip and convex Article Prepare a channel body provided with a pressure joint to apply pressure,
An elastic deformation step of bending the base portion in the width direction so that the inner surface side of the base portion becomes a convex surface or a concave surface by a predetermined external force;
A welding and bonding step in which the low friction material portion is laminated and welded to the base in a state where the base is curved ;
A glass run channel comprising: an external force removing step of applying a pressing force to the low friction material portion at the pressing joint portion by an elastic restoring force of the base portion by removing the external force after the welding joining step. Manufacturing method. The pressing joint is formed with a groove extending along the longitudinal direction of the base,
In the elastic deformation step, the base portion is elastically deformed so as to expand the concave stripes of the pressing joint portion in the width direction,
In the welding and joining step, the low friction material part is welded and joined so as to fill the concave stripe of the pressing joint part,
In the external force removing step, according to claim 1, characterized in that the action of pressing force to the low friction material portion by concave of the pressing joint by an elastic restoring force of the base portion is reduced in the widthwise direction Glass run channel manufacturing method. The method for producing a glass run channel according to claim 2 , wherein the concave portion of the press bonding portion is formed in a substantially U-shaped cross section or a substantially V-shaped cross section. The method for producing a glass run channel according to claim 2 , wherein the recess of the press bonding portion is formed so that the width dimension of the inlet portion is narrower than the bottom portion. A plurality of ridges extending along the longitudinal direction of the base portion are formed in the pressing joint portion,
In the elastic deformation step, the base portion is elastically deformed so that the plurality of ridges of the pressing joint portion approach each other in the width direction,
In the welding and bonding step, the low friction material portion is welded and bonded so as to cover a portion where the convex stripes of the press bonding portion are formed,
The pressing force is applied to the low friction material portion in the external force removing step by expanding an interval between protrusions of the pressing joint portion in a width direction by an elastic restoring force of the base portion. 2. A method for producing a glass run channel according to 1 .

Images