JP4565872B2 - Method for manufacturing curved door sash for vehicle - Google Patents

Description

  The present invention relates to a method of manufacturing a vehicle door sash, and more particularly to a method of manufacturing a vehicle curved door sash for obtaining a curved door sash.

  A flange portion having an exterior surface exposed to the outside of the vehicle, a hollow wide portion coupled to the main plate portion standing up from the back surface of the flange portion, and a door-side weather strip formed on one side surface of the main plate portion are inserted. A vehicle door sash having a first groove portion and a second groove portion formed on the other side surface of the main plate portion into which a glass run is inserted is well known (for example, Patent Document 1). reference).

  Such a door sash needs to be bent and partially bent on the second groove side due to the structure of the door provided in the vehicle. Therefore, conventionally, as shown in FIGS. 16 and 17, the straight door sash is placed with the support surface 44 a ′ of the door sash support base 44 ′ in contact with the exterior surface 11 ′ of the flange portion 10 ′. Furthermore, the top 18b 'of the hollow wide portion 18' of the door sash, the side surface 18c 'of the hollow wide portion 18' on the first groove 16 'side, the groove bottom 16a' of the first groove 16 ', and the second groove Bending dies 40 ′, 41 ′ having predetermined shapes are formed on the groove bottom 17 a ′ of 17 ′, the lower bottom portion 18 d ′ of the hollow wide portion 18 ′, and the side surface 18 a ′ on the second groove portion 17 ′ side of the hollow wide portion 18 ′. , 42 ′, 43 ′ are simultaneously brought into surface contact with each other and bent toward the second groove portion 17 ′ to obtain a curved door sash 1 b ′.

JP 2001-213167 A

  However, the conventional manufacturing method has a problem that the curved surface inside the hollow wide portion (side surface on the second groove portion side of the hollow wide portion) is wrinkled and looks bad.

  Then, an object of this invention is to provide the manufacturing method of the curved door sash for vehicles which can eliminate the said problem.

The present invention
A flange portion having an exterior surface exposed outside the vehicle;
A hollow wide portion coupled to the main plate portion standing from the back surface of the flange portion;
A first groove formed on one side surface of the main plate, into which the door-side weather strip is inserted,
A vehicular curve obtained by bending a substantially straight door sash formed on the other side surface of the main plate portion with a second groove portion into which the glass run is inserted into the second groove portion side to obtain a curved door sash. In the door sash manufacturing method,
A core made of a synthetic resin material is inserted into the hollow portion of the hollow portion of the substantially straight door sash, and the door sash is in surface contact with the support upper surface of the door sash support base and the exterior surface of the flange portion. Furthermore, except for the inner side surface of the hollow wide portion on the second groove portion side of the door sash , the top portion of the hollow wide portion, the side surface of the hollow wide portion on the first groove portion side, and the groove of the first groove portion The bottom, the groove bottom of the second groove portion, and the lower bottom portion of the hollow wide portion, each with a bending mold of a predetermined shape is brought into surface contact, and bent to the second groove portion side,
Thereafter, while maintaining the state in which said each bending mold is respectively in surface contact, the inner side surface of the second groove side of the hollow wide portion that is curved by the bending, the inner surface support convex along the inside surface A method for manufacturing a curved door sash for a vehicle, comprising a step of pressing an inner side supporting convex surface while making surface contact with a post-processing bending mold .

In this way, the substantially straight door sash is first bent by bringing the bending die into surface contact with a surface other than the side surface on the second groove portion side of the hollow wide portion, and thereafter, for bending processing for post- processing. with the structure for pressing the inner side surface of the second groove side of the hollow wide portion with a mold, bending the door sash is obtained not wrinkles are formed on the side surface of the second groove side of the hollow wide portion which is curved.

  In such a configuration, a configuration using a core material made of a nylon resin material as the core material is preferable.

With such a configuration, it is possible to reliably manufacture a curved door sash wrinkles on the inner side surface of the second groove side of the hollow wide portion is not formed.

In the method for manufacturing a curved door sash for a vehicle according to the present invention, a core material made of a synthetic resin material is inserted into a hollow part of a hollow wide part of a substantially straight door sash, and the door sash is attached to the hollow wide part of the hollow wide part. Bending is performed by bringing the bending mold into surface contact with the top, the side of the wide hollow portion on the first groove side, the groove bottom of the first groove, the groove bottom of the second groove, and the bottom bottom of the hollow wide portion. , then, in the bending mold is in contact state, where the structure for pressing the second groove side inner side surface of the hollow wide portions at the bending mold for post-processing, the inner surface of the second groove side of the hollow wide portion There is an excellent effect of obtaining a curved door sash having a good aesthetic appearance without generating wrinkles.

  Further, when a core material made of a nylon-based resin material is used as the core material, a curved door sash in which no wrinkles are formed on the side surface of the hollow wide portion on the second groove portion side can be manufactured stably and reliably.

  FIG. 1 shows a well-known vehicular door sash 1 that is obtained by roll-forming a single metal plate. The door sash 1 includes a flange portion 10 having an exterior surface 11 exposed to the outside of the vehicle, a main plate portion 15 rising from the back surface of the flange portion 10, and a hollow portion 2 coupled to the main plate portion 15. And a hollow wide portion 18. More specifically, the hollow wide portion 18 is formed to be deviated to one side with respect to the main plate portion 15, and is connected to the outer surface 18 c that is coupled to the main plate portion 15 and the outer surface 18 c. The head is composed of a horizontal top 18b, an inner surface 18a depending from the top 18b, and a horizontal lower bottom 18d coupled to the inner surface 18a.

  A first groove portion 16 into which a door-side weather strip (not shown) is fitted is formed along the longitudinal direction on the side surface of the main plate portion 15 that is continuous with the outer side surface 18c of the hollow wide portion 18. ing. The first groove portion 16 is configured with a first hook 20 provided on the hollow wide portion 18 side (upper side) and a second hook 21 provided on the flange portion 10 side (lower side) as groove walls. .

  On the other hand, a second groove portion 17 into which a glass run (not shown) is fitted is formed on the side surface of the opposite main plate portion 15 along the longitudinal direction. The second groove portion 17 is configured with the lower bottom portion 18d of the hollow wide portion 18 and the flange portion 10 as groove walls.

  Further, a bulging portion 22 is formed along the longitudinal direction of the flange portion 10 corresponding to the groove wall of the second groove portion 17.

  The outer side surface 18c of the hollow wide portion 18 according to the present embodiment constitutes the side surface on the first groove portion side of the hollow wide portion according to the present invention, and the inner side surface 18a of the hollow wide portion 18 constitutes the present invention. The side surface of the hollow wide portion on the second groove portion side is configured.

  Next, a method for obtaining a desired curved door sash 1b by bending the straight door sash 1a, which is the main part of the present invention, will be described with reference to the accompanying drawings.

First, the configuration of the manufacturing apparatus 3 for the curved door sash 1b will be described.
As shown in FIG. 2, the manufacturing apparatus 3 includes a plate-shaped door sash support base 44 having a curved edge curved in a convex shape, and a first bending mold 40 mounted on the plate-shaped door sash support base 44. Yes. The door sash support base 44 is formed with a belt-like support upper surface 44a that protrudes from the first bending die 40, and the door sash 1 that is a workpiece is placed on the support upper surface 44a. The

  On the other hand, the convex curved edge of the first bending die 40 is coupled to the second groove support surface 40a substantially perpendicular to the support upper surface 44a and the second groove support surface 40a, and is substantially horizontal. And a lower bottom support surface 40b formed in the above. As shown in FIG. 7, when the door sash 1a is placed on the support upper surface 44a, the second groove support surface 40a contacts the groove bottom 17a of the second groove 17 of the door sash 1a, and The bottom support surface 40b contacts the lower bottom 18d of the hollow wide portion 18.

  Further, in front of the door sash support base 44 and the first bending die 40, a second bending die 43 having a curved edge curved in a concave shape is disposed. The second bending mold 43 is connected to the lower portion of the apparatus main body 8 via an arm portion 4 protruding from the lower end to the apparatus main body 8 side. More specifically, a hydraulic cylinder (hidden and invisible) disposed in the same direction as the projecting direction of the arm portion 4 is disposed at the lower center of the apparatus main body 8, and the rod tip of the hydraulic cylinder is disposed. 5 and the tip of the arm portion 4 are pivotally supported by the connecting portion 6.

  In this configuration, when the hydraulic cylinder is driven and the rod tip 5 is retracted toward the apparatus main body 8 side, the second bending mold 43 in a suspended state is pulled into the apparatus main body 8 side while the arm portion 4 It rises with the lower surface as a fulcrum, and its concave curved edge comes close to the convex curved edge of the door sash support 44 and the first bending mold 40. On the other hand, when the rod tip 5 of the hydraulic cylinder is advanced, the second bending mold 43 falls to the back surface side and hangs down as shown in FIG.

  The concave bending edge of the second bending mold 43 includes an outer surface support surface 43a located on the upper side and a first groove support surface 43c located on the lower side. Further, a hook housing groove 43b is formed between the outer side support surface 43a and the first groove support surface 43c. As shown in FIG. 10, when actually manufacturing the curved door sash 1b, the outer surface support surface 43a contacts the outer surface 18c of the hollow wide portion 18, and the first groove support surface 43c is the first groove portion. 16 abuts against the groove bottom 16a. The first hook 20 is stored in the hook storage groove 43b.

  Further, as shown in FIG. 3, a slightly thick plate-shaped third bending die 45 and a movable bending die 41 are mounted on the first bending die 40. .

  More specifically, the third bending mold 45 is composed of two symmetrical third bending molds 45x and 45y, which are fixed to both corners of the first bending mold 40, respectively. The Here, the left third bending mold 45x is disposed on the left side (front side in the figure), and the right third bending mold 45y is disposed on the right side (the back side in the figure). And the inner side surface support surface 45a perpendicular | vertical with respect to the said support upper surface 44a is each formed in the outer edge of both the type | molds 45x and 45y for a 3rd bending process.

  A movable bending die 41 having a projecting curved edge is interposed between the third bending die 45x and 45y. This movable bending die 41 is connected to the rod tip 7 of a dedicated hydraulic cylinder (not visible) hidden in the apparatus body 8 so as to be movable in the front-rear direction. More specifically, a movable bending is performed on the first bending mold 40 and between the left and right third bending molds 45x and 45y by driving the hydraulic cylinder to expand and contract the rod tip 7. The processing mold 41 is configured to move back and forth. Here, FIG. 3 shows a state in which the movable bending die 41 is most advanced, and in this state, the movable bending die 41 is formed on the curved edge curved in a protruding shape. The inner side support convex surface 41a and the inner side support surfaces 45a, 45a of the adjacent third bending molds are substantially flush with each other to form a smooth projecting curved edge as a whole. As shown in FIG. 13, when manufacturing the curved door sash 1 b, the inner side surface support convex surface 41 a and the inner side surface support surface 45 a abut against the inner side surface 18 a of the hollow wide portion 18.

  Also, as shown in FIG. 4, a fourth bending die 42 on the plate is mounted on the third bending die 45 and the movable bending die 41 (not visible). . The fourth bending mold 42 has a substantially inverted L-shaped longitudinal section and includes a pressing surface 42a facing downward. As shown in FIG. 7, the pressing surface 42 a comes into contact with the top 18 b of the hollow wide portion 18 during bending.

Next, a specific process for manufacturing the curved door sash 1b using the manufacturing apparatus 3 will be described.
First, a long core 30 made of a nylon resin material is inserted into the hollow portion 2 of the hollow wide portion 18 of the straight door sash 1a (see FIGS. 7 and 9). Here, as shown in FIGS. 5 and 6, the core member 30 according to the present embodiment is configured by a first core member 30 a and a second core member 30 b.

  Both the core members 30a and 30b are long members having substantially the same total length as the total length of the straight door sash 1a, and each end has an extraction end face 32 having the same shape as the longitudinal sectional shape of the hollow portion 2. (See FIG. 5) is formed, and the outer shape is tapered toward the tip 33 at the other end (see FIG. 6).

First, the first core material 30a will be described.
FIG. 5a shows the end face 32 for taking out the first core member 30a. A screw hole 31 having a predetermined depth is opened at the center of the extraction end face 32, and an extraction rod W described later is screwed together. Further, as shown in FIG. 6 a, the first core member 30 a has a configuration in which one edge of the vertical side surface 34 is formed over the entire length, and the diameter gradually decreases from the oblique side surface 35 toward the tip 33. Yes.

  In contrast, the second core member 30b shown in FIGS. 5b and 6b is different from the first core member 30a in that one edge of the oblique side surface 35 is formed over the entire length, while the tip 33 is formed from the vertical side surface 34 side. The diameter is gradually reduced toward.

  In such a configuration, when the core member 30 is inserted into the hollow portion 2, the extraction rod W provided with a male screw is screwed into the screw hole 31 in the extraction end surface 32 of each of the core members 30a and 30b. In addition, the first core member 30a is inserted from one end of the straight door sash 1a and the second core member 30b is inserted from the other end 33 from the other end while grasping the extraction rod W. Thereby, both the core materials 30a and 30b cross in the hollow portion 2, and are fitted into the hollow wide portion 18 in an opposed state as shown in FIG. 6 (see FIGS. 7 and 9).

  Next, as shown in FIGS. 7 to 9, the straight door sash 1 a in which the core member 30 is fitted is placed on the support upper surface 44 a of the door sash support base 44. At this time, the exterior surface 11 of the straight door sash 1a is brought into surface contact with the support upper surface 44a and is formed in a cut shape between the support upper surface 44a and the second groove support surface 40a of the first bending die 40. The flange portion 10 on the second groove portion 17 side of the straight door sash 1a is inserted into the insertion gap 70 so that the second groove portion support surface 40a and the groove bottom 17a of the second groove portion 17 are connected to the lower bottom portion support surface 40b and the lower portion. The bottom 18d is brought into contact with each other (see FIG. 8). At this time, as shown in FIG. 9, the inner side surface 18a of the hollow wide portion 18 of the straight door sash 1a is in contact with the end edges 47 and 47 of the third bending dies 45x and 45y, respectively. At this time, the movable bending die 41 is in a state of being retracted from the foremost position and is not in contact with the straight door sash 1a.

  Then, as shown in FIG. 7, a fourth bending mold 42 is disposed from above the straight door sash 1a. Thereby, the pressing surface 42a of the fourth bending mold 42 abuts on the top 18b of the straight door sash 1a.

  Next, as shown in FIG. 10, the second bending die 43 is raised in the manner described above, and the outer surface support surface 43 a is set to the outer surface 18 c of the hollow wide portion 18, and the first groove portion support surface 43 c is set. It is made to contact | abut to the groove bottom 16a of the 1st groove part 16, respectively. At this time, the straight door sash 1a is sandwiched between a first bending mold 45 and a third bending mold 45 that are curved in a convex shape, and a second bending mold 43 that is curved in a concave shape. As a result, as shown in FIGS. 11 and 12, the curved door sash 1b of a semi-finished product is obtained by bending the second groove portion 17 side.

Further, immediately after the bending process, as shown in FIGS. 13 and 14, the bending molds 40, 42, 43, 45 are in contact with the curved door sash 1b of the semi-finished product for post-processing. The movable bending die 41 was advanced to the foremost position, and the inner side surface 18a of the hollow wide portion 18 and the inner side support convex surface 41a were brought into surface contact with each other and slightly shifted toward the movable bending die 41. The hollow wide part 18 is pressed. Here, the curvature of the inner side surface support convex surface 41a is set so as to be along the inner side surface 18a of the hollow wide portion 18, so that the inner side surface 18a of the hollow wide portion 18 is processed without distortion or wrinkles. The

  Thereafter, as shown in FIG. 15, the second bending die 43 is suspended and detached from the curved door sash 1 b, and the second hook pressing surface 46 a and the flange portion pressing surface 46 b are provided from above. The holding member 46 is lowered and brought into contact with the second hook 21 and the flange portion 10 to adjust the shape of the curved door sash 1b.

  Thereafter, all the bending dies 40 and the like are detached, the curved door sash 1b is taken out from the manufacturing apparatus 3, and the first core member 30a and the second core member 30b inserted into the hollow wide portion 18 are taken out. Using the scissors W, the curved door sash 1b is pulled out from both ends. Thereby, the desired curved door sash 1b is obtained.

  The post-processing mold according to the present invention is configured by the movable bending mold 41 according to this embodiment.

  The embodiments described so far are merely examples, and various embodiments can be implemented without departing from the gist of the present invention.

1 is an external perspective view of a door sash 1. FIG. It is a disassembled perspective view of the manufacturing apparatus 3 which shows the door sash support stand 44 and the 1st bending type | mold 40. FIG. It is a disassembled perspective view of the manufacturing apparatus 3 which shows the 3rd bending type | mold 45 and the movable bending type | mold 41. FIG. 4 is a perspective view of the manufacturing apparatus 3. FIG. (A) is an end view of the first core member 30a, and (b) is an end view of the second core member 30b. (A) is a partially cutaway plan view of the first core member 30a, and (b) is a partially cutaway plan view of the second core member 30b. FIG. 10 is a partially enlarged longitudinal sectional view of the manufacturing apparatus 3 on which the straight door sash 1a is placed, and is a sectional view taken along the line CC in FIGS. FIG. 8 is a partial enlarged cross-sectional view of the manufacturing apparatus 3 on which the straight door sash 1a is placed, and is a cross-sectional view taken along line AA in FIG. FIG. 8 is a partial enlarged cross-sectional view of the manufacturing apparatus 3 on which the straight door sash 1a is placed, and is a cross-sectional view taken along line BB in FIG. It is the elements on larger scale of the manufacturing apparatus 3 in which the curved door sash 1b was mounted, Comprising: It is CC sectional drawing in FIG. It is the elements on larger scale of the manufacturing apparatus 3 in which the curved door sash 1b was mounted, Comprising: It is AA sectional drawing in FIG. It is the elements on larger scale of the manufacturing apparatus 3 in which the curved door sash 1b was mounted, Comprising: It is BB sectional drawing in FIG. It is the elements on larger scale of the manufacturing apparatus 3 in which the curved door sash 1b was mounted, Comprising: It is CC sectional drawing in FIG. It is the elements on larger scale of the manufacturing apparatus 3 in which the curved door sash 1b was mounted, and is BB sectional drawing in FIG. 4 is an enlarged longitudinal sectional view of the manufacturing apparatus 3 showing a state in which a pressing member 46 is disposed. FIG. FIG. 18 is a partial enlarged cross-sectional view of a manufacturing apparatus 3 ′ having a conventional configuration, and is a DD cross - sectional view in FIG. 17. FIG. 17 is a partially enlarged longitudinal sectional view of a manufacturing apparatus 3 ′ having a conventional configuration, and is a sectional view taken along line EE in FIG. 16.

Explanation of symbols

1, 1a, 1b Door sash 2 Hollow portion 10 Flange portion 11 Exterior surface 15 Main plate portion 16 First groove portion 16a Groove bottom 17 of first groove portion 16 Second groove portion 17a Groove bottom 18 of second groove portion 17 Hollow wide portion 18a Hollow wide Inner side surface 18b of head portion 18c Top portion 18c of hollow wide portion 18 Outer side surface 18d of hollow wide portion 18 Lower bottom portion 30 of hollow wide portion 18 Core 40 First bending die 41 Movable bending die for post- processing 42 Fourth bending mold 43 Second bending mold 44 Door sash support base 44a Support upper surface 45 Third bending mold

Claims (2)

A flange portion having an exterior surface exposed outside the vehicle;
A hollow wide portion coupled to the main plate portion standing from the back surface of the flange portion;
A first groove formed on one side surface of the main plate, into which the door-side weather strip is inserted,
A vehicular curve obtained by bending a substantially straight door sash formed on the other side surface of the main plate portion with a second groove portion into which the glass run is inserted into the second groove portion side to obtain a curved door sash. In the door sash manufacturing method,
A core made of a synthetic resin material is inserted into the hollow portion of the hollow portion of the substantially straight door sash, and the door sash is in surface contact with the support upper surface of the door sash support base and the exterior surface of the flange portion. Furthermore, except for the inner side surface of the hollow wide portion on the second groove portion side of the door sash , the top portion of the hollow wide portion, the side surface of the hollow wide portion on the first groove portion side, and the groove of the first groove portion The bottom, the groove bottom of the second groove portion, and the lower bottom portion of the hollow wide portion, each with a bending mold of a predetermined shape is brought into surface contact, and bent to the second groove portion side,
Thereafter, while maintaining the state in which said each bending mold is respectively in surface contact, the inner side surface of the second groove side of the hollow wide portion that is curved by the bending, the inner surface support convex along the inside surface A method of manufacturing a curved door sash for a vehicle, comprising a step of pressing the inner side supporting convex surface while making surface contact with a post-processing bending mold .   2. The method of manufacturing a curved door sash for a vehicle according to claim 1, wherein the core material is made of a nylon resin material.

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