JP4850087B2 - Method for forming weather strip cover lip tab sheet - Google Patents

Description

  The present invention relates to a weather strip having a cover lip that is attached to the periphery of a door opening of a vehicle body, the periphery of a trunk chamber, or around a door, and covers the end of the interior material. The present invention relates to a method for forming a tab sheet attached to a burr string integrally formed so as to be tearable along the cover lip.

  FIG. 1 shows a weather strip 1 having a cover lip covering an end portion of an interior material and attached to the periphery of a door opening of a vehicle body. A core material 2 having a substantially U-shaped cross section is inserted into a flange 3 on the vehicle body side. A trim portion 4 having a substantially U-shaped cross-section that is inserted and mounted, and a hollow seal portion 5 that protrudes from the side surface of the trim portion 4 on the vehicle outer side and elastically contacts the door peripheral edge when the door is closed to seal the door. And a cover lip 7 extending from the hollow seal portion 5 and covering an end portion of the interior material 6 such as garnish or ceiling material.

  The weather strip 1 and the interior material 6 are attached to the vehicle by first attaching the weather strip 1 and then the interior material 6 so that the cover lip end is shown in FIG. 2 when the interior material is attached. It is easy to get caught in the gap between the ends. Conventionally, the drawn-out cover lip end is drawn out from the gap by a fingertip drawing operation. However, Patent Document 1 listed below facilitates drawing out the cover lip end from the gap and improves workability. A weatherstrip has been proposed. As shown in FIG. 3, the weather strip is formed by integrally forming a burr string 13 on the side surface of the trim portion 13 facing the cover lip 12 or the back surface of the cover lip 12 so as to be torn, and extending from the weather strip 11. A tab sheet 14 made of sponge is attached, and the cover lip 12 wound between the end portions of the interior material is pulled out by pulling out the tab sheet 14 in the direction of the arrow in FIG. While the burr 13 is torn from the side of the trim part or the back surface of the cover lip by being pulled out in the direction, the cover lip 12 is repelled and pulled out from between the ends of the interior material.

As an alternative to the tab sheet 14 made of a sponge shown in FIG. 3, a tab sheet 16 having a central portion as shown in FIG. 4 is also known. In this tab sheet 16, a burr string 18, which is a string-like member integrally formed with the weather strip 28, is torn in a certain section, the center part is cut, and the cut individual ends are passed through the cuts 17 on both sides of the tab sheet 16. When pulling out the cover lip that is bound and wound between the ends of the interior material, the constricted portion 19 at the center is cut with a scissors or a knife, and then each half of the tab sheet 16 is pulled out in the left-right direction in the figure. Therefore, the cover lip is lifted up and pulled out from between the ends of the interior material.
JP 2006-69253 A

  The tab sheet 14 shown in FIG. 3 has a plurality of holes through which the burr string 13 is passed, and the tab sheet 14 is connected to the end of the burr string 13 by passing the burr string 13 through the hole. In order to prevent the burr cord 13 from being pulled out when the tab sheet 14 is pulled, it is necessary to pass the burr cord 13 through a plurality of holes or tie the burr cord 13 that has passed through the holes so as not to be unwound.

  Also in the tab sheet 16 shown in FIG. 4, it is necessary to bind the burr string 18 through the cut of the tab sheet 16.

  It is an object of the present invention to detachably attach a cover lip which is attached to a trim portion or a cover lip of a weather strip so that the cover lip is wound between the end portion of the interior material and draws it out from the end portion of the interior material. It is an object of the present invention to provide a method for forming a tab sheet so that the work of attaching the tab sheets 14 and 16 described above to a string can be omitted.

The invention according to claim 1 includes a rim portion and a cover lip covering the end portion of the interior material, and a cover facing the trim portion of the weather strip attached to the periphery of the door opening of the automobile body, the periphery of the trunk chamber, or around the door. A burr cord used to pull out the cover lip formed integrally with the back surface of the lip or the side of the trim portion facing the cover lip so as to be tearable along the longitudinal direction and inserted between the end portions of the interior material. A method for forming a cover lip drawer tab sheet which is torn from a weather strip by a certain length and is integrally formed with the torn burr string, wherein the weather strip is formed integrally with the extrusion molding portion and the extrusion molding portion. It is composed of a section, the tab sheet using a mold for the molding section forming the weather strip, positioning the burr cord torn predetermined length mold After tanning, characterized in that it is simultaneously molded with the molded part.

  The tab sheet of the present invention may be made of rubber or resin and may be formed of a hard material, but preferably a low hardness material of JIS A80 or less, more preferably a sponge material so as not to damage the vehicle body when the weather strip is assembled. Formed with.

  The invention according to claim 2 is the invention according to claim 1, wherein the tab sheet is easily cut with a cutting tool such as a scissors or a knife at or near the center, or can be easily torn by hand. A split portion is formed, and an end portion of the burr cord or a portion near the end portion is embedded or fused on both sides of the easy split portion.

  Here, for example, as shown in FIG. 5, the easy-dividing part is a V-shaped notch 22 formed in the substantially central part of the tab sheet 21, and is formed from both sides in the substantially central part of the tab sheet 24 as shown in FIG. 7, a connecting portion 28 connecting a pair of circular tab sheets 27 as shown in FIG. 7, a connecting portion 31 connecting a pair of conical tabs 30 at the apex as shown in FIG. 8, as shown in FIG. The connecting portion 34 is formed by connecting a pair of triangular tab sheets 33 at the apexes, and as shown in FIG. 10, a pair of rectangular tab sheets 36 are fused at one point. As shown in FIGS. 5 to 10, the burrs 39 are embedded in the tab sheets 21, 24, 27, 30, 33, and 36 as shown in FIGS. 5 to 10, and are fused at the time of forming the tab sheet 21 as shown in FIG. 11. Alternatively, as shown in FIG. 12, the end of the burr string 39 may be embedded by protruding the end of the burr string from the tab sheet 21 as shown in FIG. 12.

  The burrs 39 also have knots formed in the portions embedded in the tab sheets 21, 24, 27, 30, 33, and 36, and even if the tab sheets 21, 24, 27, 30, 33, 36 are pulled, It is desirable not to easily escape from 39. FIG. 13 shows an example in which a knot 40 is formed on a burr string 39 embedded in the tab sheet 21.

  The invention according to claim 3 is the invention according to claim 1, wherein the burr string is continuously embedded in the tab sheet, and at least one side, preferably both sides of the burr string, for example, circular, elliptical, oval, etc. The hole is formed.

  The invention according to claim 4 is characterized in that, in the invention according to claim 3, a pair of pins protrudes from the mold, and the burr string is formed between the pins.

  According to the first aspect of the present invention, since the tab sheet is formed integrally with the burr string using the same mold at the same time as the molding of the molded part, only one mold or process is required and the work efficiency is improved. The tab sheet is also integrally formed with the burr string, so that the conventional operation of attaching the tab sheet to the burr string as described above can be omitted.

  According to the invention which concerns on Claim 2, by providing an easy parting part, an easy part can become a standard at the time of cutting with a cutting tool or to tearing by hand, and an easy part can be easily cut with a cutting tool. Can be easily torn off by hand, the tab sheet is divided, and the divided tab sheet is pulled in one direction or the opposite direction to tear the burr string from the weather strip and between the interior material ends. There are effects such as being able to pull out the covered lip.

  If a knot is formed in the buried portion of the burr cord on the tab sheet, the tab sheet can be firmly integrated with the burr string, and the tab sheet can be prevented from coming out of the burr string even when the tab sheet is pulled.

  According to the invention according to claim 3, when forming the tab sheet, it can be set as it is without cutting the burr string, and the hole can be used as a guide when cutting or cutting with a cutting tool, By cutting the holed place with a cutting tool, the burrs can be cut simultaneously.

  When the holes are formed on both sides of the embedded burr cord, it is easy to use as a guideline for cutting the tab sheet. By cutting, the burr string can be cut reliably. When the hole is formed only on one side of the burr string, it is desirable to form an uneven line that reaches the hole in order to display the cut portion. Such irregular lines can be formed by forming convex or concave lines on the mold.

  According to the invention which concerns on Claim 4, at the time of tab sheet | seat shaping | molding, it can position and set to a metal mold | die by inserting a burr string between the pins of a metal mold | die.

Hereinafter, a tab sheet according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 14 shows a weather strip 41 attached to the periphery of the opening of the rear door of the automobile body. FIG. 15 is an enlarged view of part a in FIG. The weather strip 41 is formed endlessly as shown in FIG. In the triangular mark shown in FIG. 15, the side of the blacked portion indicates the mold forming portion 43, and the side of the non-painted portion indicates the extruded portion 42.

  The extruded portion 42 includes a trim portion 46 having a substantially U-shaped cross section that is inserted into a flange (not shown) on the vehicle body side, and a side surface on the vehicle outer side of the trim portion 46. And a hollow seal portion 47 that elastically contacts the peripheral edge of the rear door when the door is closed and seals between the rear door (not shown), and extends from the hollow seal portion 47, and is made of interior materials such as garnish and ceiling material It comprises a cover lip 48 covering an end (not shown), and a bridge 49 is integrally formed in the hollow seal 47. The above-described structure of the extruded portion 42 has the same basic structure as the conventional weather strip 1 shown in FIGS. 1 and 2 except that a bridge 49 is formed in the hollow seal portion 47.

  Further, a burr string 51 made of the same or different material as that of the extruding part 42 is integrally formed on the back surface of the cover lip 48 so as to be torn, and the burr string 51 torn from the fixed section extruding part 42 is The central portion is cut, and the end portion is inserted into and integrated with a tab sheet 52 made of a resin or rubber sponge material. The material of the burr string may be a sponge material or a solid material, but is preferably a rubber-like elastic material. Moreover, in order to endure the pulling force at the time of pulling out, the burr string may have a core wire such as glass fiber embedded therein.

  The tab sheet 52 has an easy-cut portion formed by a V-shaped notch 54 at the center, and the molding is performed by setting each end of the extrusion-molded portion 42 in a mold for molding the mold-formed portion 43 and the same mold. The burr cord 51 cut into pieces is set so that the end of the burr cord protrudes into the cavity. The mold forming portion 43 is formed of the same material as that of the extrusion forming portion 42, and the tab sheet 52 is integrally formed of a resin or rubber sponge material into which the end of the burr cord is inserted.

  According to the tab sheet 52 of the present embodiment, the tab sheet 52 can be molded at the same time as the mold molding unit 43 using the same mold as the mold for molding the mold molding unit 43, and the tab sheet 52 is integrally molded with the end of the burr string inserted. The work efficiency is improved because the work of attaching the burr string 51 is not required, and it is easily cut by using a cutting tool such as iron or a knife at the easy dividing portion formed by the notch 54, or easily by hand. It has the effect that it can be shredded.

  The tab sheet 52 according to the above-described embodiment faces the mold forming portion 43 and is opposed to the mold forming portion 43, but can be formed at a location away from the mold forming portion 43. In this case, as shown in FIG. 16, the portion where the weather strip 41 is bent to form the tab sheet 52 is brought close to the portion where the mold forming portion 43 is formed, and the mold forming portion 43 and the tab sheet 52 are formed simultaneously.

  FIG. 17 shows an example in which a tab sheet 56 is attached to an extruded weather strip 55, and the weather strip 55 has the same structure as the extruded portion 42 of the weather strip 41 provided with the burr string 51. There will be no further explanation. The tab sheet 56 is integrally formed with a burr string 51 drawn out from the weather strip 55 by a predetermined section, and is formed on both sides of the burr string 51 in which a pair of holes 57 as pin marks are embedded. Yes. At the time of shipment from the factory, it is cut until it reaches both holes 57, and the buried burr string 51 is cut at the same time as the gap between the holes is cut. In the figure, 58 indicates a cutting line. After the shipment, when the weather strip 55 is attached to the vehicle body, the cover lip inserted into the end of the interior material is pulled out while pulling the tab sheet 56 from both sides.

The tab sheet 52 of the above-described embodiment uses the same mold as the mold molding portion 43 and is molded simultaneously with the molding of the mold molding portion 43. Similarly, the tab sheet 56 of the present embodiment also has a mold molding portion and one mold. They are molded simultaneously using.

  Specifically, the tab sheet 56 described above is formed after the burr string 51 of the weather strip 55 is peeled off for a certain period, and then inserted between a pair of pins protruding from the mold. Next, molding is performed by injecting molten resin or rubber containing a foaming agent. FIG. 17 shows the tab sheet 56 taken out from the mold after molding.

  According to the tab sheet 56 of the present embodiment, the burr string 51 is integrally formed with a fixed length inserted, and no work for attaching the burr string 51 is required, and the burr string 51 is cut using the pair of holes 57 as a guide. The tab sheet 56 can be easily cut until it is done, and the tab sheet 56 is kept connected while leaving the necessary length, and the cutting can be easily performed by pulling the tab sheet 56 from both sides.

  The tab sheet of the present invention is attached to the edge of the interior material in the weather strip having a cover lip that is attached to the periphery of the door opening of the automobile body, the periphery of the trunk chamber, or around the door, and covers the interior material edge. Used to pull out the cover lip.

Sectional drawing of the weather strip attached to the flange. Sectional drawing with which the cover lip was wound. The perspective view of the edge part of the weather strip provided with the burr string and the conventional tab sheet | seat. The front view of the principal part of the weather strip which attached the conventional tab sheet | seat to the burr string. The top view which shows an example of the tab sheet of this invention. The top view which shows another example of the tab sheet | seat of this invention. The top view which shows another example of the tab sheet | seat of this invention. The perspective view of the tab of this invention. The perspective view of another example of the tab sheet of this invention. The top view of another example of the tab sheet of this invention. The top view of another example of the tab sheet of this invention. The top view of another example of the tab sheet of this invention. The top view of the other example of the tab sheet of this invention. The figure which shows the weather strip attached to the opening part periphery of the rear door of a motor vehicle body. The enlarged view of the a part of FIG. The figure which shows another aspect of the weather strip provided with the tab sheet | seat. The top view which shows the other aspect of the tab sheet | seat integrally molded by the burr string.

21, 24, 27, 30, 33, 36, 52, 56 .. tab sheet 22 .. notch 25 .. notches 28, 31, 34 .. connecting part 37 .. fused part 39, 51. · · Knots 41 and 55 · · Weather strip 42 · · Extrusion portion 43 · · Molding portion 45 · · Core material 46 · · Trim portion 47 · · Hollow seal portion 48 · · Cover lip 49 · · Bridge 57 · · Hole 58 ... cutting line

Claims (4)

A cover lip 48 that includes a trim portion 46 and a cover lip 48 that covers an end portion of the interior material and faces the trim portion 46 of the weather strips 41 and 55 that are attached to the periphery of the door opening of the automobile body, the periphery of the trunk chamber, or around the door. A burr used to pull out the cover lip 48 formed integrally with the back surface or the side surface of the trim portion 46 facing the cover lip 48 so as to be tearable along the longitudinal direction thereof and inserted between the end portions of the interior material. A method for forming a cover lip drawing tab sheet that is integrally formed with a torn burr string 51 by tearing a string from a weather strip 41, wherein the weather strip 41 includes an extruded part 42 and the extruded part 42. And the tab sheet 52 is a metal for forming the molded part of the weather strip 41. The use, after positioning the burr cord 51 torn predetermined length mold, cover lip drawer tab sheet molding method, characterized in that it is molded at the same time as the molded part 43.   The tab sheets 52 and 56 can be easily cut by a cutting tool such as a scissors or a knife at the center or the vicinity thereof, or easily divided portions 24, 24, 27, 30, 33, 36 that can be easily torn off by hand. Are formed, and the end portions of the burr cord 51 or the vicinity of the end portions are buried or fused on both sides of the easily divided portions 24, 24, 27, 30, 33, and 36, respectively. The method for forming a cover lip drawer tab sheet according to claim 1.   2. The cover lip drawer tab sheet according to claim 1, wherein the burr cord 51 is continuously embedded in the tab sheet 56, and a hole 57 having an appropriate shape is formed on at least one of both sides of the burr cord 51. Molding method. 4. A method for forming a cover lip drawer tab sheet according to claim 3, wherein a pair of pins project from the mold and the burr string 51 is formed between the pins.

Images