JP5751175B2 - Wire harness manufacturing method and wire harness manufacturing mold - Google Patents

Description

  The present invention relates to a technique for manufacturing a wire harness to which a clamp component is attached.

  Patent Document 1 discloses a technique of molding a resin package on a wire harness and fixing a fastener to the resin package. In Patent Document 1, the opening edge of the hole into which the locking leg can be inserted is applied to the mounting piece of the fastener so that the resin does not flow out to the locking leg of the fastener when the resin package is molded. Touching.

  Patent Document 2 discloses a technique for molding a mold resin coating layer on a wire harness and fixing an offset clamp to the mold resin coating layer. The offset clamp has a base plate portion integrated with the mold resin coating layer and an offset plate portion protruding laterally from the base plate portion, and a vane portion for locking the vehicle body at the tip of the offset plate portion Is provided. In Patent Document 2, the offset plate portion is extended to the outside through the groove between the molds so that the resin does not flow out to the blade portion for locking the vehicle body when the mold resin coating layer is molded. .

JP 61-161913 JP 2004-14474 A

  By the way, the clamp part is provided with a disc spring part on the base end side of the locking part locked and fixed to the vehicle body panel, and the vehicle body panel is sandwiched and fixed between the locking part and the disk spring part. There are some things to do. Usually, the disc spring part is formed in a shape having a certain extent. In the technique disclosed in Patent Document 1, when the disc spring portion is formed on the fastener, it is necessary to enlarge the hole to some extent. If it does so, it will become difficult to contact the whole circumferential direction of the opening edge part of a hole with the attachment piece of a fastener, and it will become difficult to seal resin so that resin may not flow out to a latching | locking part.

  In Patent Document 2, there is a problem that it is necessary to use a clamp component having a special configuration such as an offset clamp.

  Therefore, the present invention easily integrates a clamp part in which a vehicle body fixing portion including a disc spring portion and a vehicle body locking portion is protruded with respect to a fixing piece into a resin portion formed so as to cover the wire harness main body portion. The purpose is to be able to fix.

  In order to solve the above-mentioned problem, the first aspect is a clamp in which a vehicle body fixing portion including a disc spring portion and a vehicle body locking portion protrudes from a fixing piece on a wire harness main body portion in which a plurality of electric wires are bundled. A method of manufacturing a wire harness in which components are fixed, wherein (a) at least two first molds and at least one second mold are configured to be separable and combined, and the at least two first molds and A mold surface forming an accommodation space capable of accommodating at least a part of the wire harness main body and at least a part of the fixed piece in a state where the at least one second mold is combined, and the at least two molds are formed. A vehicle body fixing portion receiving recess that can be received so as to surround the vehicle body fixing portion from the periphery thereof when the first mold is combined is formed, and the vehicle body fixing portion is received in the vehicle body fixing portion receiving recess. A step of preparing a molding die in which a seal portion is formed in contact with the clamp component to partition the vehicle body fixing portion accommodating recess and the accommodating space in a state where the clamp component is set; and (b) the at least two The first mold is combined, and the vehicle body fixing portion is enclosed in the vehicle body fixing portion receiving recess so as to surround the vehicle body fixing portion, and the seal portion is brought into contact with the clamp component, so that the clamp component is A step of setting the two first molds; (c) a step of setting at least a part of the electric wires constituting the wire harness main body portion in the at least two first molds; and (d) the at least two second molds. 1 type | mold and said at least 1 2nd type | mold are united, and at least one part of the electric wire which comprises the said wire harness main-body part, and at least one part of the said fixing piece are the said accommodation empty spaces. And a step of disposing within the implanting (e) in the receiving space, curable resin after the injection possible and injected into the housing space.

  A 2nd aspect is a manufacturing method of the wire harness which concerns on a 1st aspect in which the said wire harness main-body part contains a branch part, Comprising: As the said shaping | molding die, the said mold surface is the said at least 2 1st type | mold. Forming the accommodating space capable of accommodating the branch portion in a state where the at least one second type is combined, and the at least two first types are formed so as to be separated at an intersection portion of the branch portion; What uses the said vehicle body fixing | fixed part accommodation recessed part in the position corresponding to the cross | intersection part of the said branch part is used.

  A 3rd aspect is a manufacturing method of the wire harness which concerns on a 1st or 2nd aspect, Comprising: The convex part for unification guides is formed in at least 1 of the said at least 2 1st type | molds as the said shaping | molding die. In addition, a combination guide concave portion into which the combination guide convex portion is fitted is used in at least one of the at least two first molds.

  A 4th aspect is a manufacturing method of the wire harness which concerns on any one 1st-3rd aspect, Comprising: As the said shaping | molding die, the said wire harness main-body part extends from the said accommodation space to the said mold surface. The thing provided with the elastic sealing member which encloses the said wire harness main-body part in front of doing is used.

A 5th aspect is a manufacturing method of the wire harness which concerns on any one 1st-4th aspect, Comprising: As the said shaping | molding die, the said wire harness main-body part is accommodated in the said at least 2 1st type | mold. What provided the guide convex part which guides so that it may be stored in space is used.

  A 6th aspect is a manufacturing method of the wire harness which concerns on a 5th aspect, Comprising: As the said shaping | molding die, the guide receiving recessed part by which the said guide convex part is engage | inserted is used for the said 2nd type | mold. .

  A 7th aspect is a manufacturing method of the wire harness which concerns on any one 1st-6th aspect, Comprising: As the said shaping | molding die, it extends in the direction surrounding the said wire harness main-body part around the said mold surface. The existing groove is formed.

  The mold for manufacturing the wire harness according to the eighth aspect covers the wire harness main body, and the clamp component in which the vehicle body fixing portion including the disc spring portion and the vehicle body locking portion protrudes from the fixed piece is fixed. A mold for manufacturing a wire harness for molding a molded resin portion, comprising at least two first molds and at least one second mold that can be separated and combined, and the at least two first molds A mold surface forming an accommodation space capable of accommodating at least a part of the wire harness main body part and at least a part of the fixed piece is formed in a state in which the mold and the at least one second mold are combined. The at least two first molds are formed with a vehicle body fixing portion receiving recess that can be received so as to surround the vehicle body fixing portion from the periphery of the at least two first molds. In a state where the clamp component is set so as to receive the vehicle body fixing portion in the portion receiving recess, a seal portion is formed that contacts the clamp component and partitions the vehicle body fixing portion receiving recess from the storage space. .

  A 9th aspect is a shaping | molding die for wire harness manufacture which concerns on an 8th aspect for forming the said resin part in the branch part of a wire harness main-body part, Comprising: The said mold surface is the said at least 2nd 2nd. Forming the accommodating space capable of accommodating the branch portion in a state where the first type and the at least one second type are combined, and the at least two first types are separated at an intersection of the branched portions. The vehicle body fixing portion receiving recess is formed at a position corresponding to an intersection of the branch portions.

  According to the 1st aspect, if the resin inject | poured in the accommodation space hardens | cures, the resin part which covers a wire harness main-body part will be formed. At this time, the resin portion is cured in a state of being integrated with at least a part of the fixed piece. Further, in a state in which the vehicle body fixing portion is enclosed in the vehicle body fixing portion receiving recess so as to surround the vehicle body fixing portion, the seal portion comes into contact with the clamp component to partition the vehicle body fixing portion receiving recess from the receiving space. Therefore, the injected resin can be made difficult to flow out to the vehicle body fixing portion. For this reason, the clamp part in which the vehicle body fixing part including the disc spring part and the vehicle body locking part protrudes from the fixing piece is easily and integrally fixed to the resin part formed so as to cover the wire harness main body part. it can.

  According to the 2nd aspect, a clamp component can be fixed to the crossing part of the branch part of a wire harness main-body part.

  According to the third aspect, the at least two first molds can be combined in a state where they are positioned as accurately as possible.

  According to the fourth aspect, the injected resin is prevented from leaking from the accommodation space by the elastic sealing member.

  According to the 5th aspect, a wire harness main-body part can be set to the said 2nd type | mold so that a wire harness main-body part may be stored in accommodation space by a guide convex part.

  According to the sixth aspect, the upper mold can be combined with the lower mold accurately positioned using the guide convex portion.

  According to the 7th aspect, since the inject | poured resin is filled around the wire harness main-body part through the inside of a ditch | groove, resin can be spread as evenly as possible so that the said wire harness main-body part may be covered.

  According to the eighth aspect, in the first aspect, the clamp part in which the vehicle body fixing portion including the disc spring portion and the vehicle body locking portion protrudes from the fixing piece is connected to the wire harness main body portion. Can be easily and integrally fixed to the resin portion formed so as to cover.

  According to the 9th aspect, the clamp part can be fixed while providing the resin part which covers this in a branch part.

It is explanatory drawing which shows the manufacturing process of a wire harness. It is a perspective view which shows a shaping | molding die. It is a perspective view which shows a lower mold | type. It is a top view which shows a lower mold | type. It is a front view which shows the division | segmentation lower mold | type of one side. FIG. 5 is a schematic partial sectional view taken along line VI-VI in FIG. 4. It is a schematic fragmentary sectional view in the VII-VII line of FIG. It is a bottom view which shows an upper mold | type. It is a perspective view which shows an upper mold | type. It is explanatory drawing which shows the manufacturing process of a wire harness. It is explanatory drawing which shows the manufacturing process of a wire harness. It is explanatory drawing which shows the manufacturing process of a wire harness. It is explanatory drawing which shows the example which provided the elastic sealing member in the shaping | molding die. It is a schematic bottom view which shows the part which provided the resin part and the clamp components among wire harnesses.

  Hereinafter, the manufacturing method of the wire harness which concerns on embodiment, the shaping | molding die for wire harness manufacture, and a wire harness are demonstrated.

  FIG. 1 is an explanatory view showing a manufacturing process of the wire harness 10. In addition, in FIG. 1, the wire harness 10 is simplified and shown for convenience of explanation. The wire harness 10 is a wiring material in an automobile or the like, and a wire harness main body portion 11 configured by bundling a plurality of electric wires in a predetermined wiring form according to the wiring form of various electric devices to be connected. Including. Here, the wire harness main body 11 is configured such that a plurality of electric wires are branched by a branch portion 12 according to a plurality of connection destinations. In the branch portion 12, the plurality of electric wires may be branched in three directions or more than four directions.

  Such a wire harness 10 is usually assembled on a drawing board 20 or the like. That is, on the drawing board 20, an electric wire support 22 for supporting the electric wires at a fixed position is erected along the wiring form of the electric wires (the wiring line 21 is drawn on the drawing board 20 in FIG. 1). ing. And in the state which arrange | positioned the some electric wire along the electric wire support tool 22, each electric wire is bound with an adhesive tape, a binding band, etc., and the wire harness main-body part 11 is maintained by a predetermined wiring form. In addition, a clamp component for fixing the vehicle body is fixed to the wire harness main body 11. The wire harness 10 is attached and fixed to the vehicle body using this clamp component.

  In the present embodiment, for the branch portion 12 in the three directions (here, branched in a T shape) of the intermediate portion of the wire harness main body portion 11, the branch portion 12 is used by using the following molding die 30. An example in which a plurality of electric wires are bundled in a state of being covered with a resin portion and kept in a predetermined branching shape, and a clamp component is fixed to the resin portion will be described.

  2 is a perspective view showing the mold 30, FIG. 3 is a perspective view showing the lower mold 40 of the mold 30, FIG. 4 is a plan view showing the lower mold 40, and FIG. FIG. 6 is a front view showing a divided lower mold 40A on one side, FIG. 6 is a schematic partial cross-sectional view taken along line VI-VI in FIG. 4, and FIG. 7 is a schematic partial cross-sectional view taken along line VII-VII in FIG. FIG. 8 is a bottom view showing the upper die 50, and FIG. 9 is a perspective view showing the upper die 50. 3 to 7 show a state in which the clamp component 80 is set.

  Here, the clamp component 80 will be described. The clamp component 80 is a member formed of resin or the like, and includes a vehicle body fixing portion 82 and a fixing piece 88 (see FIG. 5). The vehicle body fixing portion 82 is a portion that is attached and fixed to the vehicle body panel, and includes a disc spring portion 84 and a vehicle body locking portion 86. The vehicle body locking portion 86 includes a shaft portion 86a and a plurality of elastic locking pieces 86b extending so as to spread from the distal end portion to the base end portion of the shaft portion 86a. The elastic locking piece 86b is configured to be elastically deformable so that its tip end portion is close to the shaft portion 86a. When the vehicle body locking portion 86 is inserted into a locking hole formed in the vehicle body panel, the plurality of elastic locking pieces 86b abut against the peripheral edge of the locking hole and elastically deform so as to approach the shaft portion 86a side. . When the plurality of elastic locking pieces 86b get over the locking holes, the plurality of elastic locking pieces 86b are elastically restored to the original shape, and the distal end portions thereof are prevented from being removed from the peripheral portions of the locking holes. It comes to lock. The disc spring portion 84 is provided on the base end side of the vehicle body locking portion 86, more specifically, on the base end portion of the shaft portion 86a. The disc spring portion 84 is formed in a dish shape that gradually expands from the proximal end portion of the shaft portion 86a toward the distal end side. In the axial direction of the shaft portion 86a, a space capable of sandwiching the vehicle body panel is provided between the peripheral edge portion of the disc spring portion 84 and the tip end portion of the elastic locking piece 86b. Therefore, as described above, the peripheral portion of the disc spring portion 84 is the locking hole in the state where the distal ends of the plurality of elastic locking pieces 86b are in contact with the one main surface side of the vehicle body panel at the peripheral portion of the locking hole. It contacts the other main surface side of the vehicle body panel at the peripheral edge. Thereby, the vehicle body fixing portion 82 of the clamp component 80 is attached and fixed to the vehicle body panel. In this attached state, the disc spring portion 84 is elastically deformed according to the thickness of the vehicle body panel. That is, the disc spring portion 84 has a role of absorbing the thickness difference of the vehicle body panel.

  The fixing piece 88 is formed in a long shape extending in the lateral direction from the base end portion of the vehicle body fixing portion 82, in this case, an elongated plate shape. Here, the fixing piece 88 is formed in a single elongated plate shape, and a vehicle body fixing portion 82 projects from an intermediate portion thereof. In other words, the fixing piece 88 is formed so as to extend on both sides of the base end portion of the vehicle body fixing portion 82. The clamp piece 80 is attached to the wire harness main body 11 by arranging the fixing piece 88 along the wire harness main body 11 and fixing it to the wire harness main body 11. The fixing piece may be formed to extend only from the base end portion of the vehicle body fixing portion to one side, or may be formed to extend in an L shape from the base end portion of the vehicle body fixing portion. May be.

  Usually, the fixed piece 88 is set to a width dimension that does not protrude from the wire harness main body 11 assuming the minimum diameter of the wire harness main body 11 to be attached. The disc spring portion 84 is formed in a shape that takes into account the mounting stability to the vehicle body panel, the necessity of absorbing the thickness difference of the vehicle body panel, and the like, that is, a shape having a spread. Here, in the width direction of the fixed piece 88, the outer diameter of the disc spring portion 84 is larger than the width dimension of the fixed piece 88. Therefore, the fixed piece 88 protrudes on both sides of the fixed piece 88 in the width direction.

  The molding die 30 is configured such that a lower die 40 including two divided lower dies 40A and 40B as a first die and an upper die 50 as a second die can be separated and combined. More specifically, the mold 30 is formed in a cubic shape as a whole. The mold 30 is divided into upper and lower parts, and the lower part is a lower mold 40 and the upper part is an upper mold 50. Further, the lower mold 40 is divided into two in the plan view to form divided lower molds 40A and 40B. The lower mold 40 may be divided into a larger number, that is, three or more molds, and the upper mold 50 may be divided into a plurality of molds.

  In the state in which the lower mold 40 and the upper mold 50 are combined, a mold surface 32 that forms an accommodation space 31 is formed in the mold 30 (see FIG. 2). Here, the mold surface 32 includes the accommodation space 31 that can accommodate at least a part of the wire harness main body 11 and the branching part 12 and at least a part of the fixing piece 88 (here, the entire fixing piece 88). It is formed in the shape to be formed.

  More specifically, the lower mold 40 is formed in a flat cubic shape in a state where the divided lower molds 40A and 40B are combined. A lower mold surface 42 is formed on one main surface (upper surface) of the lower mold 40. The lower mold surface 42 is formed in a shape matching the three-way branch shape of the branch portion 12, more specifically in a groove shape extending in a T shape. In addition, each of the T-shaped end portions of the lower mold surface 42 opens on the three side surfaces of the lower mold 40. The opening part of the lower mold surface 42 is formed in a size that matches the outer diameter of the wire harness main body 11 extending from the branch part 12. Further, a portion of the lower mold surface 42 that is inside the opening portion is formed in a shape that is larger than the branch portion 12 by about the thickness of the resin portion 16 described later.

  The lower die 40 is provided with a support bar 38. Here, the support bar 38 is provided on one divided lower mold 40A of the lower mold 40 so as to extend downward. When the support bar 38 is erected on the drawing plate 20, the lower die 40 is supported at a predetermined position on the drawing plate 20 with the lower die surface 42 facing upward.

  Moreover, the upper mold | type 50 is formed in flat cube shape, and the upper mold | type surface 52 is formed in the one main surface (lower surface) (refer FIG.8 and FIG.9). The upper mold surface 52 is formed in a shape matching the three-way branch shape of the branch portion 12, more specifically, in a T-shaped groove shape. Each of the T-shaped end portions of the upper mold surface 52 opens on three side surfaces of the upper mold 50. The opening part of the upper mold surface 52 is formed in a size that matches the outer diameter of the wire harness main body 11 extending from the branch part 12. In addition, a portion of the upper mold surface 52 that is inside the opening portion is formed in a shape that is larger than the branch portion 12 by about the thickness of the resin portion 16.

  The upper mold 50 is formed with an injection port 56 that opens into the accommodation space 31. Here, the injection port 56 is formed so as to open toward the intersecting portion of the branch portion 12 disposed in the accommodation space 31. The injection port 56 may be opened toward other locations in the accommodation space 31, but the resin that is more easily poured into the accommodation space 31 is more easily opened at the above location.

  When the lower mold 40 and the upper mold 50 are combined, the lower mold surface 42 and the upper mold surface 52 are arranged to face each other, and a housing space 31 in which a hole extends in a T shape is formed between the lower mold surface 42 and the upper mold surface 52. Will be. The accommodation space 31 is open on three side surfaces of the mold 30. When the branched portion 12 is accommodated in the accommodating space 31, a gap that can be filled with resin is formed between the surface of the branched portion 12 and the inner inner surface of the mold surface 32. Moreover, in the opening part of the accommodation space 31, the mold surface 32 contacts the outer peripheral part of the wire harness main body part 11 extending from the branch part 12, and leakage of resin is suppressed.

  Further, the lower mold 40 is divided into two in a line passing through the central part in the width direction of the linearly extending groove in the lower mold surface 42. That is, a lower mold surface 42A that opens upward and laterally is formed in one divided lower mold 40A. The other divided lower mold 40B includes a lower mold surface 42B including a lower mold surface 42B1 that opens upward and laterally, and a lower mold surface 42B2 that is connected to an intermediate portion of the lower mold surface 42B1 and opens upward. Is formed (see FIGS. 4 and 10).

  The lower mold 40 is formed with a vehicle body fixing portion receiving recess 44 that can be received so as to surround the vehicle body fixing portion 82 in a state where the divided lower dies 40A and 40B are combined (FIGS. 4 and 4). 6). Here, a vehicle body fixing portion receiving recess 44 is formed at a position below the intersection of the branch portion 12 in the lower mold 40. That is, in order to attach the clamp part 80 to the intersection part of the branch part 12, the vehicle body fixing | fixed part accommodation recessed part 44 is formed in the position corresponding to the said intersection part. In this case, the lower mold 40 is separated on the surface passing through the intersection of the branch portion 12 so that the vehicle body fixing portion 82 can be easily accommodated in the vehicle body fixing portion accommodating recess 44.

  More specifically, a divided concave portion 44A is formed at the bottom of the middle portion in the longitudinal direction of the lower mold surface 42A of the one divided lower mold 40A. 44 A of division | segmentation recessed parts are opened to the unification surface side with the other division | segmentation lower mold | type 40B. Here, although the division | segmentation recessed part 44A is opened also under the division | segmentation lower mold | type 40A, this is not essential. In addition, a split concave portion 44B is formed at the bottom of the middle portion in the longitudinal direction of the lower mold surface 42B (which is also an extension of the lower mold surface 42B2) of the other divided lower mold 40B. The divided recess 44B opens to the side of the united surface with one divided lower mold 40A. Then, when the divided lower molds 40A and 40B are combined, the divided concave portions 44A and 44B are combined in an opposing state so that the vehicle body fixing portion 82 is surrounded around the housing space 31 so as to spread below the intersecting portion of the branch portion 12. The vehicle body fixing portion receiving recess 44 is formed so as to be enclosed (in this case, sandwiched from both sides). The vehicle body fixing portion receiving recess 44 is wide enough to accommodate the disc spring portion 84, and here, is wider than the width of the lower mold surface 42. That is, in a state in which the lower mold 40 is viewed in plan, the vehicle body fixing portion accommodating recess 44 extends below the lower mold surface 42 so as to protrude from both sides of the lower mold surface 42. In addition, although the vehicle body fixing | fixed part accommodation recessed part 44 is opening below here, opening below is not essential.

  Further, the lower mold 40 comes into contact with the clamp part 80 and accommodates the vehicle body fixing part in a state where the clamp part 80 is set on the lower mold 40 so that the vehicle body fixing part 82 is accommodated in the vehicle body fixing part accommodating recess 44. A seal portion 46 that partitions the recess 44 and the accommodation space 31 is formed.

  More specifically, the side edge seal portions 46A1 and 46B1 and the bottom seal portions 46A2 and 46B2 are used as the seal portion 46 so as to surround the upper opening of the vehicle body fixing portion receiving recess 44 in the divided lower dies 40A and 40B. Is formed. The bottom seal portions 46A2 and 46B2 are formed at two locations across the lower mold surface 42 in the upper opening of the vehicle body fixing portion accommodating recess 44. Each of the bottom seal portions 46A2 and 46B2 is formed in a ridge shape crossing the lower mold surface 42, and the upper surface thereof is formed in a flat and slender surface. Then, while the vehicle body fixing portion 82 is accommodated in the vehicle body fixing portion accommodating recess 44 and the fixing piece 88 is disposed in the lower mold surface 42 along the longitudinal direction, the bottom seal portions 46A2 and 46B2 are fixed pieces. It contacts the lower surface of 88 over substantially the whole area in the width direction.

  Further, the side edge seal portions 46A1 and 46B1 are formed in a long shape connecting the outer end portions of the bottom seal portions 46A2 and 46B2 in the upper opening of the vehicle body fixing portion accommodating recess 44. Then, as described above, the side edge seal portions 46A1 and 46B1 are arranged on the side edges of the fixed piece 88 in a state where the fixed piece 88 is disposed in the lower mold surface 42 so as to contact the bottom seal portions 46A2 and 46B2. In contact with the entire length thereof.

  Then, in a state where the clamp part 80 is set on the lower mold 40, the seal portion 46 has two bottom surfaces sandwiching the vehicle body fixing portion 82 among the fixing pieces 88 in the upper opening 4 direction of the vehicle body fixing portion receiving recess 44 and the two locations thereof. It abuts on both side edges of the fixing piece 88 between them. Thus, the housing space 31 and the vehicle body fixing portion housing recess 44 are partitioned so that the resin injected into the housing space 31 does not easily flow into the vehicle body fixing portion housing recess 44 side.

  A recess 48 in which the fixed piece 88 can be placed is formed between both side openings in the bottom of the lower mold 40. At both ends of the recess 48, protrusions 48 p that can abut against both ends of the fixing piece 88 are formed. Then, both side edges of the fixing piece 88 abut on the side edge seal portions 46A1 and 46B1, and both ends of the fixing piece 88 abut on the protrusion 48p, so that the fixing piece 88 is the bottom of the lower mold surface 42. Is placed and supported at a fixed position.

  The mold surface 32 is formed with a concave groove 32g extending in a direction surrounding the wire harness body 11 so that the resin can easily flow around the outer periphery of the wire harness body 11. . The concave groove 32g may be continuous in the outer peripheral direction of the wire harness main body 11 or may be intermittent. In addition, here, each concave groove 32g is partially connected also in the longitudinal direction of the wire harness main body part 11 (refer FIG.8 and FIG.9).

  Further, the division lower molds 40A and 40B are formed with a united guide convex portion 49a so as to protrude from each united surface, and the united guide is located at a position facing the united guide convex portion 49a. A united guide concave portion 49b into which the convex portion 49a can be fitted is formed (see FIGS. 2, 3, 5, and 10). Here, a united guide convex part 49a and a united guide concave part 49b are formed in one divided lower mold 40A so as to sandwich the divided concave part 44A, and a united guide guide is formed so that the other divided lower mold 40B sandwiches the divided concave part 44A. A concave portion 49b and a combined guide convex portion 49a are formed.

  And when uniting both split lower molds 40A and 40B, the respective split lower molds 40A and 40B are not displaced from each other by bringing the united guide convex parts 49a closer to each other while fitting into the opposing united guide concave parts 49b. They are combined in a predetermined positional relationship.

  Further, the lower mold 40 is provided with a guide convex portion 44 c for guiding the electric wire so as to be accommodated in the accommodating space 31. More specifically, a guide convex portion 44 c protrudes from the main surface (upper surface) of the lower mold 40 at an outer position of the boundary of the lower mold surface 42. Each guide convex portion 44c is preferably provided so as to sandwich the lower mold surface 42 from both sides. Here, the guide convex portion 44c is a component integrally formed with the lower mold 40, but is not necessarily required.

  The upper mold 50 is formed with a guide recess 54c into which the guide protrusion 44c can be fitted. More specifically, a guide concave portion 54c is formed at a position corresponding to the guide convex portion 44c outside the boundary of the upper die surface 52 in one main surface (lower surface) of the upper die 50. Yes. Each of the guide recesses 54c is formed in an opening shape into which the guide convex portion 44c can be fitted, and the upper mold 50 can be positioned with respect to the lower mold 40 by fitting the guide convex portion 44c into the guide concave portion 54c. .

  The manufacturing method of the wire harness 10 using the said shaping | molding die 30 is demonstrated.

  First, the drawing board 20 in which the mold 30 and the wire support 22 are erected along a predetermined wiring path is prepared (see FIG. 1). In the initial manufacturing state of the wire harness 10, the upper mold 50 is separated from the lower mold 40, and the other divided lower mold 40B is separated from one divided lower mold 40A.

  And as shown in FIG. 10, the clamp component 80 is set to one division | segmentation lower mold | type 40A. At this time, the vehicle body fixing portion 82 is disposed in the divided lower mold 40A, and the fixing piece 88 is disposed on the bottom seal portion 46A2. Thereafter, the other divided lower mold 40B is united with one divided lower mold 40A so that each united guide convex part 49a is fitted into each united guide concave part 49b. Thus, the vehicle body fixing portion 82 is housed in the vehicle body fixing portion housing recess 44 so as to be surrounded from the periphery thereof, and the seal portion 46 is in contact with the fixing piece 88 so as to surround the vehicle body fixing portion 82. The clamp component 80 is set on the lower mold 40 (see FIGS. 3 to 7).

  Next, a plurality of electric wires are sequentially arranged on the drawing board 20. At this time, each electric wire is supported at a predetermined position by the electric wire support 22. Then, as shown in FIG. 11, the electric wires are arranged while being branched in a T shape along the lower mold surface 42 at the place where the molding die 30 is arranged. Thereby, the wire harness main body 11 is arranged along the vehicle body fixing portion 82. At this time, the electric wire is guided by the guide convex portion 44 c so as not to protrude from the lower mold surface 42. At this time, the plurality of electric wires may be bundled at other locations or may not be bundled.

  Thereafter, the upper die 50 is united with the lower die 40 while the guide convex portion 44c is fitted into the guide concave portion 54c. Thereby, as shown in FIG. 12, the T-shaped branch portion 12 and the fixing piece 88 of the clamp component 80 are accommodated in the T-shaped accommodating space 31.

  Next, a resin that can be injected into the accommodation space 31 and can be cured after the injection is injected into the accommodation space 31 through the injection port 56. As the resin, a thermoplastic resin such as nylon or polyolefin can be used. Then, the resin is heated and softened by using an injection device 60 such as a hot gun so that the resin can be injected into the storage space 31 and injected into the storage space 31 through the injection port 56.

  In this case, the lower mold 40 and the upper mold 50 are preferably formed of a heat-resistant resin that can withstand the temperature of the heat-softened resin, such as an ABS resin. However, as the injected resin, in addition to the above, a moisture-curing resin may be used, or a photo-curing resin or the like may be used. In the latter case, the upper mold 50 and the like may be formed of a transparent resin.

  The resin injected into the storage space 31 starts from the inner opening of the injection port 56 and passes through the gap between the branch portion 12 and the mold surface 32 and reaches the outer periphery of the branch portion 12. In particular, in the longitudinal direction of the electric wire, the resin flows through the gap between the electric wires. Further, in the outer peripheral direction of the wire harness main body 11, the resin passes through the concave groove 32g. For this reason, resin can be spread evenly around the branch portion 12 more reliably. In addition, since the opening part of the storage space 31 is formed narrowly, it is suppressed that the resin inject | poured in the storage space 31 flows out through the opening to the outside.

  At this time, the resin spreads so as to take in both ends of the fixing piece 88 of the clamp component 80. In particular, in the present embodiment, the fixing piece 88 is placed on the bottom seal portions 46A2 and 46B2, and both end portions thereof are in a state of floating from the bottom portion of the lower mold surface 42 (see FIG. 7). For this reason, the resin flows into the lower side of both ends of the fixed piece 88, and both ends of the fixed piece 88 are taken in so as to be embedded in the resin.

  On the other hand, around the upper opening of the vehicle body fixing portion receiving recess 44, that is, around the vehicle body fixing portion 82, the seal portion 46 comes into contact with the bottom surface or side edge portion of the fixing piece 88, so The space between the housing recess 44 is separated. For this reason, the resin introduced into the accommodation space 31 is suppressed from flowing into the vehicle body fixing portion receiving recess 44, and adhesion to the vehicle body fixing portion 82 is suppressed.

  As shown in FIG. 13, the elastic sealing member 70 (at the position surrounding at least one electric wire extending from the branch portion of the lower mold surface 42 and the upper mold surface 52 constituting the mold surface 32. In FIG. 13, it is preferable to provide a mesh pattern for convenience of explanation. More specifically, the elastic sealing member 70 is provided on the inner peripheral surface of the opening of the accommodation space 31 along the circumferential direction, and the lower mold 40 and the upper mold 50 are combined. 70 is preferably pressed and deformed against the outer periphery of the wire harness body 11. Accordingly, the resin injected into the accommodation space 31 is less likely to leak outside through the gap between the opening of the accommodation space 31 and the outer peripheral portion of the wire harness main body 11. Moreover, it is preferable that an elastic sealing member 72 (in FIG. 13, a mesh pattern is given for convenience of description) is provided at least in a portion of the seal portion 46 that comes into contact with the clamp component 80. As a result, the resin injected into the accommodation space 31 is less likely to leak to the vehicle body fixing portion accommodation recess 44 side through between the seal portion 46 and the clamp component 80. As the elastic sealing members 70 and 72, it is preferable to use a member formed of an elastomer such as rubber. The elastic sealing members 70 and 72 use adhesives, screws, or a structure that fits into the recesses formed in the lower mold 40 and the upper mold 50 with respect to the lower mold 40 or the upper mold 50. It may be attached to the lower mold 40 and the upper mold 50.

  Then, after the resin is cooled and solidified, when the upper mold 50 is separated from the lower mold 40 and the other divided lower mold 40B is separated from the one divided lower mold 40A, the branch portion is formed by the resin portion 16. The wire harness 10 that is covered and the clamp part 80 is fixed to the resin portion 16 is obtained. Other bundling operations are performed on the wire harness 10 as necessary.

  According to the manufacturing method of the wire harness 10 configured as described above, the mold 30 for manufacturing the wire harness, and the wire harness 10, the resin portion that covers the wire harness main body 11 when the resin injected into the accommodation space 31 is cured. 16 is formed. The wire harness main body 11 is maintained in a predetermined bundling form, and in particular in this embodiment, is maintained in a predetermined branching form. At this time, since the resin portion 16 is cured in a state of being integrated with at least a part of the fixed piece 88, the clamp component 80 is fixed to the resin portion 16 through the fixed piece 88. Further, when the resin portion 16 is formed, the seal portion 46 is brought into contact with the clamp component 80 in a state in which the vehicle body fixing portion 82 is enclosed in the vehicle body fixing portion receiving recess 44 so as to surround the vehicle body fixing portion 82, thereby The housing recess 44 and the housing space 31 are partitioned. For this reason, the injected resin is difficult to flow out to the vehicle body fixing portion 82 side. Accordingly, the clamp component 80 in which the vehicle body locking portion 86 including the disc spring portion 84 and the vehicle body locking portion 86 is protruded from the fixing piece 88 without attaching resin or the like to the vehicle body fixing portion 82 can be used as the wire harness. The resin portion 16 formed so as to cover the main body portion 11 can be easily fixed integrally.

  In addition, the mold surface 32 is formed so as to form the accommodating space 31 that can accommodate the branch portion 12, the vehicle body fixing portion accommodating recess 44 is formed at a position corresponding to the intersecting portion of the branch portion 12, The lower mold 40 is separated into the divided lower molds 40A and 40B so as to divide the vehicle body fixing portion receiving recess 44. For this reason, the clamp component 80 can be fixed to the resin portion 16 while forming the resin portion 16 in the branch portion 12. Accordingly, the clamp component 80 can be fixed to the intersecting portion of the branch portion 12 while forming the resin portion 16 for maintaining and protecting the branch form with respect to the branch portion 12. By fixing the clamp part 80 to the branch part 12, the branch part 12 can be directly fixed to the vehicle body panel using the clamp part 80, and the degree of freedom of the mounting position of the clamp part 80 is improved. To contribute. Furthermore, the freedom degree of the wiring layout of the wire harness 10 improves, and it contributes also to shortening of the wire harness 10, weight reduction, cost reduction, etc.

  Further, the division lower molds 40A and 40B are formed with a united guide convex portion 49a so as to protrude from the respective united surfaces, and at the position facing the united guide convex portion 49a, Since the union guide concave portion 49b into which the convex portion 49a can be fitted is formed, the division lower molds 40A and 40B can be easily and accurately positioned by fitting the union guide convex portion 49a into the union guide concave portion 49b. Can be combined.

  Moreover, it is easy to arrange | position so that each electric wire which comprises the wire harness main-body part 11 may be accommodated in the accommodation space 31 by the guide convex part 44c protrudingly provided by the division | segmentation lower mold | type 40A.

  Moreover, since the guide convex portion 44c of the divided lower mold 40A is fitted into the guide concave portion 54c of the upper mold 50, the upper mold 50 can be easily combined with the lower mold 40 being positioned accurately.

  In addition, since the groove 32g is formed in the mold surface 32, the injected resin enters around the branch portion 12 through the groove 32g, so that the resin is more reliably covered with the branch portion 12. Can be distributed as evenly as possible.

  In addition, although the said embodiment demonstrated the example which covers the branch part 12 of the wire harness main-body part 11 with the resin part 16, you may cover the linear part of a wire harness main-body part with a resin part.

  In addition, the resin portion 16 may cover the wire harness main body 11 over a long length, or may cover the entire wire harness main body 11. In this case, the resin portion 16 can also play a role of maintaining the wire harness main body 11 in a predetermined linear shape or a bent shape.

  Further, the separation mode of the lower mold 40 is not limited to the above example. It may be divided into two on a plane orthogonal to the divided plane described in the above embodiment. That is, it is only necessary that the lower mold is divided so as to divide the vehicle body fixing portion receiving recess 44 so that the vehicle body fixing portion 82 including the disc spring portion 84 can be easily disposed in the vehicle body fixing portion receiving recess 44.

  Further, it is sufficient that at least a part of the fixing piece 88 is embedded in and integrated with the resin portion 16. As described above, it is not essential that the end portion of the fixing piece 88 is embedded in the resin portion 16, and one main surface or the like of the end portion may be partially exposed on the surface of the resin portion 16.

  As described above, the present invention has been described in detail. However, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Wire harness 11 Wire harness main-body part 12 Branch part 16 Resin part 30 Molding die 31 Accommodating space 32 Mold surface 32g Concave groove 40 Lower mold 40A, 40B Division lower mold 44 Car body fixing part accommodation recessed part 44c Guide convex part 44A, 44B Divided concave part 46 Sealing part 49a Combined guide convex part 49b Combined guide concave part 50 Upper mold 52 Upper mold surface 54c Guide concave part 70, 72 Elastic sealing member 80 Clamp part 82 Car body fixing part 84 Belleville spring part 86 Car body locking part 88 Fixed piece

Claims (9)

A method of manufacturing a wire harness in which a clamp component in which a vehicle body fixing portion including a disc spring portion and a vehicle body locking portion is protruded from a fixed piece is fixed to a wire harness body portion in which a plurality of electric wires are bundled. ,
(a) The at least two first molds and the at least one second mold are configured to be separable and combined, and the at least two first molds and the at least one second mold are combined, A mold surface forming an accommodation space capable of accommodating at least a part of the wire harness main body part and at least a part of the fixed piece is formed, and the vehicle body fixing part is mounted in a state where the at least two first molds are combined. A vehicle body fixing portion receiving recess that can be received so as to enclose from the periphery is formed, and the clamp component is set in such a manner that the vehicle body fixing portion is received in the vehicle body fixing portion receiving recess, and contacts the clamp component. A step of preparing a molding die in which a seal portion for partitioning the vehicle body fixing portion accommodating recess and the accommodating space is formed;
(b) Combining the at least two first molds, housing the vehicle body fixing portion in the vehicle body fixing portion housing recess so as to surround the vehicle body fixing portion, and bringing the seal portion into contact with the clamp component Setting the clamp component to the at least two first molds;
(c) a step of setting at least a part of the electric wires constituting the wire harness main body part in the at least two first molds;
(d) The at least two first molds and the at least one second mold are combined to form at least a part of the electric wires constituting the wire harness main body and at least a part of the fixed piece in the housing space. A step of disposing within,
(e) injecting a resin that can be injected into the storage space and curable after the injection into the storage space;
A method of manufacturing a wire harness comprising: The said wire harness main-body part is a manufacturing method of the wire harness of Claim 1 containing a branch part,
As the mold,
The mold surface forms the accommodating space capable of accommodating the branch portion in a state where the at least two first molds and the at least one second mold are combined.
The at least two first types are formed to be separated at an intersection of the branch portions;
The manufacturing method of a wire harness using what the said vehicle body fixing | fixed part accommodation recessed part is formed in the position corresponding to the cross | intersection part of the said branch part. It is a manufacturing method of the wire harness according to claim 1 or 2,
As the mold, at least one of the at least two first molds is formed with a merging guide convex portion, and at least one of the at least two first molds is formed with the merging guide convex portion. The manufacturing method of a wire harness using the thing in which the recessed part for united guides in which a stool is inserted was formed. It is a manufacturing method of the wire harness as described in any one of Claims 1-3,
The manufacturing method of a wire harness using the said mold surface provided with the elastic sealing member which encloses the said wire harness main-body part before the said wire harness main-body part extends from the said accommodation space on the said mold surface. It is a manufacturing method of the wire harness as described in any one of Claims 1-4,
The manufacturing method of a wire harness using the said 1st type | mold as the said shaping | molding die provided with the guide convex part which guides the said wire harness main-body part so that it may be accommodated in the said accommodation space. It is a manufacturing method of the wire harness according to claim 5,
A method for manufacturing a wire harness, wherein a guide receiving concave portion into which the guide convex portion is fitted is formed in the second die as the molding die. It is a manufacturing method of the wire harness as described in any one of Claims 1-6,
A method for manufacturing a wire harness, wherein the mold surface is formed with a concave groove extending in a direction surrounding the wire harness main body portion on the mold surface. Molding for manufacturing a wire harness for molding a resin part that covers a wire harness main body and molds a clamp part in which a car body fixing part including a disc spring part and a car body locking part protrudes from a fixing piece. Type,
Comprising at least two first molds and at least one second mold that can be separated and combined,
An accommodation space capable of accommodating at least a part of the wire harness main body and at least a part of the fixed piece in a state in which the at least two first molds and the at least one second mold are combined. The mold surface to be formed is formed,
The at least two first molds are formed with a vehicle body fixing portion accommodating recess that can be accommodated so as to surround the vehicle body fixing portion from the periphery in a state where they are combined.
In a state where the clamp component is set so as to receive the vehicle body fixing portion in the vehicle body fixing portion receiving recess, a seal portion is formed that contacts the clamp component and partitions the vehicle body fixing portion receiving recess and the receiving space. A mold for manufacturing a wire harness. A forming die for manufacturing a wire harness according to claim 8, for forming the resin portion at a branch portion of the wire harness main body part,
The mold surface forms the accommodating space capable of accommodating the branch portion in a state where the at least two first molds and the at least one second mold are combined.
The at least two first types are formed to be separated at an intersection of the branch portions;
The shaping | molding die for wire harness manufacture by which the said vehicle body fixing | fixed part accommodation recessed part is formed in the position corresponding to the cross | intersection part of the said branch part.

Images