JP2007131065A - Fixing structure of elongated member for vehicle and elongated member fixing tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing structure of an elongated member for a vehicle which prevents generation of malfunction (for example insulation defect in an electric line) by heat influence and is widely applicable and inexpensive, and also to provide an elongated member fixing tool used for the same. <P>SOLUTION: A second molten resin P2 injected into a gap 20 is solidified to form a holding part 21, so that the electric line 8 is sandwiched by a cover part 11 and the holding part 21, and the second molten resin P2 forms a joining part 22, so that a mounting surface 12a of a mounting part 12 is joined to a main surface 7a of a door trim 7. Accordingly, an electric wire fixing structure for the vehicle holds/fixes the electric wire 8 to a main surface 7a of the door trim 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a long member fixing structure for a vehicle and a long member fixing tool used therefor.

  For example, as an example of an electric wire fixing structure for a vehicle and an attaching method thereof, the applicant of the present application covers the wire harness (electric wire bundle; assembled electric wire) and the back surface of the panel material (fixed member) constituting the parting line surface ( A method of injection molding into a cavity closed by the main surface) was developed (see Patent Document 1). The technique shown in Patent Document 1 is an application and development of outsert molding (or direct molding) as one form of injection molding. For example, for vehicles such as door trims composed of resin boards, kenaf boards, etc. In interior panel materials, it is used when holding and fixing a wire harness or the like on a surface (panel material back surface) opposite to the design surface (surface inside the cabin). Such a technique can also be used when holding and fixing a lamp wiring or the like on the back surface of an exterior material such as a bumper. Furthermore, the above technique can also be applied to holding and fixing optical fiber cables, resin pipes, rubber hoses and the like.

Japanese Patent No. 3642426

  However, since the wire harness (specifically, each electric wire) itself has a core wire (core material) such as a copper wire and an outer sheath made of resin or the like covering the outside, the above-described direct molding cavity If the outer sheath of the electric wire melts or is heat-sealed to the molten resin due to the heat of the molten resin to be injection-molded, there is a possibility that an insulation failure (short circuit) may occur. To prevent this, selecting a molten resin (material) according to the outer sheath of the wire and adjusting the injection temperature, injection pressure, etc. makes the molding process complicated and lacks versatility. May increase.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicular long member fixing structure that is highly versatile and inexpensive, and a long member fixing tool used therefor, while preventing the occurrence of functional failures due to thermal effects (eg, insulation failure in electric wires). It is in.

Means for Solving the Problems and Effects of the Invention

In order to solve the above-described problem, a long member fixing structure for a vehicle according to the present invention includes:
A single or bundle-like long member arranged along the main surface of a fixed member such as a vehicle door trim having a property that the outer peripheral portion is softened by heat is held on the main surface of the fixed member. A long member fixing structure for a vehicle for fixing,
A cover portion that bypasses the outside of the long member so that a predetermined gap is formed between the outer peripheral surface of the long member and the inner surface of the long member when viewed from the extending direction of the long member. When,
At least one end side of the cover portion is integrated and extends away from the long member, and an attachment portion having an attachment surface that is directly or indirectly joined to the main surface of the fixed member through another member;
A molten polymer material injected into a gap between the cover part and the long member comprises a holding part formed by solidifying the long member in a form of pressing and holding the long member on the inner surface of the cover part,
The molten polymer material injected into the gap is solidified to form the holding portion, so that the long member is sandwiched between the cover portion and the holding portion, and the mounting surface of the mounting portion is a portion of the fixed member. It joins to the main surface, The said elongate member is hold | maintained and fixed to the main surface of the said to-be-fixed member, It is characterized by the above-mentioned.

Moreover, in order to solve the said subject, the specific aspect of the elongate member fixing structure for vehicles which concerns on this invention is as follows.
A single or bundle-like long member arranged along the main surface of a fixed member such as a vehicle door trim having a property that the outer peripheral portion is softened by heat is held on the main surface of the fixed member. A long member fixing structure for a vehicle for fixing,
When viewed from the extending direction of the elongate member, the outer surface of the elongate member is arched so that a predetermined gap is formed between the outer peripheral surface of the elongate member and the inner surface of the elongate member. And a covering portion covering in a closed manner,
An attachment part that is integrally formed with one end side of the cover part and extends away from the elongated member, and has an attachment surface that joins the main surface of the fixed member;
A holding part formed by solidifying the molten polymer material injected into the gap between the covering part and the long member in a form that presses and holds the long member on the inner surface of the covering part;
The molten polymer material is provided between a mounting surface of the mounting portion and a main surface of the fixed member, and a joining portion formed by solidifying,
The molten polymer material injected into the gap solidifies to form the holding portion, whereby the long member is sandwiched between the cover portion and the holding portion, and the molten polymer material forms the joint portion. Thus, the attachment surface of the attachment portion and the main surface of the member to be fixed are joined, and the long member is held and fixed to the main surface of the member to be fixed.

  The long member fixing structure for a vehicle includes a cover portion that bypasses and covers the outside of a long member (for example, a wire harness) disposed along a main surface (for example, a panel back surface) of a fixed member (for example, a door trim). And an attachment part having an attachment surface to be joined to the main surface, and a holding part that is injected into the gap between the cover part and the long member and solidified. As a result, the molten polymer material (for example, molten resin) injected into the gap between the cover portion and the long member is cooled in the gap before solidifying, and is directly applied to the outer peripheral portion of the long member. Hard to affect heat. That is, it becomes difficult for the outer peripheral portion of the long member to melt or to be heat-sealed to the molten polymer material, and it is possible to prevent the occurrence of a functional failure (for example, insulation failure) due to the influence of heat. At this time, it is possible to simplify the selection of the molten polymer material (material) according to the long member (the outer peripheral part thereof) and the adjustment of the injection temperature, the injection pressure, etc., without complicating the molding process and versatility. Therefore, an increase in manufacturing cost can be suppressed. Further, the molten polymer material is solidified in a form in which the long member is pressed and held on the inner surface of the covering part (that is, a form in which the long member is sandwiched between the covering part and the holding part) to form a holding part, and Since the attachment surface is joined to the main surface of the member to be fixed, it can be held and fixed to the main surface of the member to be fixed while preventing the long member from coming off or falling off.

  In addition, when the molten polymer material is supplied between the mounting surface of the mounting portion and the main surface of the fixed member to be solidified to form the joint portion, the holding portion and the joint portion are formed almost simultaneously. be able to. Therefore, the long member can be attached to the main surface of the fixed member in a short time, and misalignment or the like hardly occurs.

  Such a long member fixing structure for a vehicle has the following structure: “The main surface of the fixed member constituting the parting line surface is closed and includes a cover part and an attachment part. It is recommended to manufacture by the method of injection molding into a cavity that forms a gap (direct molding method). However, molding methods other than injection molding (for example, compression molding, transfer molding, cast molding, etc.) can also be used.

  By the way, a typical example of the long member for a vehicle is a single electric wire or a bundled electric wire (flat wire harness, round wire) having a core wire (core material) such as a copper wire and a jacket made of resin covering the outside thereof. Type wire harness etc.), and the functional failure due to the heat effect is insulation failure (short). And when the fixing structure is applied to such a vehicle electric wire, the molten polymer material injected into the gap is solidified to form a holding portion, thereby sandwiching the electric wire between the covering portion and the holding portion, The molten polymer material forms a joint portion to join the attachment surface of the attachment portion and the main surface of the member to be fixed, so that the electric wire fixing structure for the vehicle is held and fixed to the main surface of the member to be fixed. .

  In addition, as another example of the long member for a vehicle, an optical fiber cable can be mentioned. In this case, the functional failure due to the thermal effect is total reflection at the boundary surface between the core (core material) and the clad (outer jacket). This is light leakage (leakage) associated with the destruction phenomenon. Other examples include resin pipes and rubber hoses for passing cooling water, fuel, air-fuel mixture, etc. In this case, functional failures due to thermal effects are caused by fluid damage caused by pipe or hose damage. Leakage (leakage).

  Here, the polymer material includes plastic and elastomer. “Plastic” refers to a polymer material that exhibits plasticity (a property that causes deformation without application of external force and deforms without breaking, and does not return to the original state even when external force is removed). “Plastomer” ) ". The term “elastomer” refers to a high molecular weight material that exhibits rubber-like elasticity (deforms when an external force is applied but returns to its original shape when the external force is removed) at around room temperature. Usually, synthetic resins are classified as plastics (plastomers), and synthetic rubbers are classified as elastomers.

  In any case, the molten polymer material passes between the attachment surface of the attachment portion and the main surface of the member to be fixed and then flows into the gap, so that the fusion layer is formed between the outer peripheral portion of the long member. It is desirable that the holding portion be formed by being solidified in the gap after being cooled to a temperature equal to or lower than the temperature at which it is generated. As a result, the thermal effect of the molten polymer material flowing into (injecting into) the gap (for example, molten resin that is injection-molded into the cavity) does not easily reach the outer periphery of the long member (for example, the outer sheath of the electric wire). Therefore, the occurrence of functional failure (for example, insulation failure) due to thermal influence can be further suppressed.

  In addition, the cover portion has a predetermined width in the extending direction of the long member, and the gap is formed in a form that penetrates the entire width of the cover portion. The holding portion can be formed by solidifying in the gap while allowing it to flow out to the outside of the passage covering portion and solidify. In this way, by forming a gap that penetrates in the extending direction of the long member, for example, when a molten polymer material is injection-molded by a direct molding method, the internal pressure of the cavity is released from the gap in the penetration form. Can do. Accordingly, the clamping force (pressing force of the fixed member) to the fixed member can be reduced (for example, 100 kg or less), so that the injection device can be reduced in size and the deformation of the fixed member can be prevented. In addition, since the molten polymer material that has passed through the gap in the penetrating form flows out and solidifies along the long member to the outside of the cover portion, the holding width of the holding portion increases, and the long member extends in the extending direction. Can be prevented from being displaced. Furthermore, since both ends in the width direction of the gap are open, the cooling effect of the molten polymer material injected into the gap is enhanced, and the thermal influence on the outer peripheral portion of the long member is further reduced.

  In addition, when the cover part and the attachment part are formed so as to have a width equal to the extending direction of the long member, the joining width (joining area) of the joining part formed by solidification of the molten polymer material is maintained. It is possible to make the size suitable for the presser width (presser area) of the part.

  Then, the molten polymer material is injected into a cavity that includes a cover portion and an attachment portion with the main surface of the member to be fixed as a parting line surface and forms a through-type gap inside the cover portion, and solidifies in the gap. Thus, the holding portion can be formed. As described above, when the holding portion is formed by the direct molding method (outsert molding method), it is possible to simplify the process of attaching and fixing the long member and shorten the installation work time. At that time, the cover portion and the attachment portion can be integrally formed in advance by injection molding or the like.

  Further, the cover portion may be formed in a semicircular shape when viewed from the extending direction of the long member, and the attachment portion may be formed to extend from one end of the semicircular cover portion toward the radially outer side of the cover portion. Thus, since the cover part and the attachment part are formed in a relatively simple shape, it becomes easy to perform integral molding in advance by injection molding or the like. In addition, by using a semicircular (and arched and closed) covering portion, a single long member or a bundle-like long member (for example, a flat wire harness, a round wire harness, etc.) can be used. However, it can be easily arranged inside.

  In addition, when the cover portion and the attachment portion are formed so as to have the same thickness when viewed from the extending direction of the long member, when the cover portion and the attachment portion are integrally formed by injection molding or the like in advance. The molding is easy and the strength can be increased.

  When the member to be fixed is a flat plate-like member made of a non-metallic organic material such as resin or kenaf and having a main surface formed in a flat surface, it is difficult to cause plastic deformation such as bending (warping). . Therefore, for example, when a vehicle interior panel material such as a door trim is implemented as a member to be fixed, the electric wire is held and fixed on the back surface side without causing wrinkles or the like due to warpage on the surface side of the panel material that becomes the design surface. can do.

  Therefore, in order to solve the above-mentioned problem, the long member fixture according to the present invention is used in the above-described long member fixing structure for a vehicle, and the cover portion and the attachment portion are integrally formed by injection molding. It is characterized by. In this way, since the long member fixture having the cover portion and the attachment portion can be integrally formed in advance by injection molding, the process of attaching and fixing the long member is simplified to shorten the installation work time. it can.

  At that time, injection-molding can be performed in advance using the same kind of material as the molten polymer material for forming the holding portion before the holding portion is formed. In this way, when the long member fixing tool (the cover part and the attachment part) is made of the same material as the holding part, the long member fixing tool is easily joined (adhered) to the holding part (and the joint part). Thus, the material cost is reduced. In addition, when saying "the same kind of material," the same material (for example, polyacetal resin (POM), polycarbonate resin) is used for the elongated member fixture (cover and mounting portion) and the molten polymer material (holding portion and joint). (PC)) as well as the case of the same type of material (for example, polyamide resin, fluorine resin).

Example 1
Next, embodiments of the present invention will be described with reference to examples shown in the drawings. FIG. 1 is a process diagram schematically showing a fixing method for realizing the fixing structure of the present invention, and FIG. 9 is an explanatory view showing a fixing structure based on the fixing method of FIG. In this embodiment, as shown in FIG. 9 (b), a single vehicle electric wire (hereinafter simply referred to as a resin wire or the like) having a core wire 8a (core material) such as a copper wire and an outer sheath 8b made of resin covering the outside thereof. The electric wire 8 is held and fixed to the main surface 7a of the door trim 7 with the long side member (vehicle long member) 8 as the main surface 7a of the fixed member. The door trim 7 is a flat plate-like member made of a nonmetallic organic material such as resin or kenaf and having a main surface 7a formed on a flat surface.

  The wire fixing structure shown in FIG. 9 is connected to the cover portion 11 that covers the outside of the wire 8 and one end side of the cover portion 11 when viewed in the extending direction of the wire 8 (or the cross section orthogonal to the axis). The mounting portion 12 extends in the direction of separation, and the holding portion 21 and the joining portion 22 are cooled and solidified by the second molten resin P2 (molten polymer material). Among these, the cover portion 11 has an arch shape that bypasses the outer side of the electric wire 8 into a semi-cylindrical shape so that a gap 20 is formed between the inner surface 11a and the outer peripheral surface of the outer sheath 8a of the electric wire 8. Covered in a closed manner. The attachment portion 12 is formed to extend from one end side of the semicylindrical cover portion 11 toward the radially outer side of the cover portion 11, and the lower surface is formed on the attachment surface 12 a that joins the main surface 7 a of the door trim 7. Yes. Further, the holding portion 21 is formed by solidifying the second molten resin P2 injected into the gap 20 in a form that presses and holds the electric wire 8 on the inner surface 11a of the portion 11. The joint portion 22 is formed by the second molten resin P2 leaking between the attachment surface 12a of the attachment portion 12 and the main surface 7a of the door trim 7 and solidifying. The reason why the second molten resin P2 is referred to here is, as will be described in detail later, that this wire fixing structure is formed by two-stage molding, and is a resin that is injected in the latter stage. It is for showing.

  In this way, the second molten resin P2 injected into the gap 20 is solidified to form the holding portion 21, so that the electric wire 8 is sandwiched between the covering portion 11 and the holding portion 21, and the second molten resin P2 is joined to the joining portion. By forming 22, the mounting surface 12 a of the mounting portion 12 and the main surface 7 a of the door trim 7 are joined. As a result, a vehicle electric wire fixing structure for holding and fixing the electric wire 8 to the main surface 7a of the door trim 7 is configured.

  In addition, the cover part 11 and the attachment part 12 are formed so that it may have substantially the same thickness. As a result, when the fixing part 10 and the attachment part 12 are injection-molded to form the fixing clip 10 (long member fixing tool; see FIG. 8), the strength balance between the two is improved and the long-life fixing clip 10 is formed. As a result, an electric wire fixing structure is obtained.

Such an electric wire fixing structure is manufactured by a four-step fixing method schematically shown in FIG.
(1) First injection step (FIG. 1 (a)): Using a mold 1 composed of a movable mold 2 and a fixed mold 3, a first molten resin P1 (molten polymer material) is injected and a fixing clip 10 ( The cover portion 11 and the attachment portion 12) are integrally formed.
(2) First mold opening step (FIG. 1B): The fixed clip 10 is separated from the fixed mold 3 while being held in the movable mold 2.
(3) Second injection step (FIG. 1 (c)): The movable mold 2 is combined with the main surface 7a of the door trim 7, and the second molten resin P2 is injected into the cavity 4 forming the gap 20, and held by direct molding. The part 21 and the joint part 22 are formed.
(4) Second mold opening step (FIG. 1 (d)): The movable mold 2 is separated from the main surface 7a of the door trim 7 to complete the wire fixing structure.
Details of each step will be described below.

(1) First injection step (FIG. 1 (a), FIG. 2, FIG. 6)
The first molten resin P1 is injected from the nozzle 6 of the injection device 5 through the communication port 6a, and the fixing clip 10 (the cover portion 11 and the attachment portion 12) is integrally formed. As shown in FIGS. 2 and 6, the mounting portion 12 of the fixed clip 10 integrally formed in this process has an injection through passage (hereinafter simply referred to as a through passage) 12 b having a predetermined cross-sectional shape communicating with the nozzle 6. It is formed to penetrate in the vertical direction. Further, a rectangular thin (for example, 1 mm or less thickness) tongue piece 12c (closed portion) penetrates the upper end portion (end portion on the nozzle 6 side) of the through passage 12b so as to close most of the through passage 12b. A protrusion is formed in the passage 12b. Specifically, the axis O of the nozzle 6 (communication port 6a) is disposed so as to pass through the tongue piece 12c, and in the second injection step, the nozzle 6 is second melted at the same position as the first injection step (axis O position). The first molten resin P1 is supplied (injected) to the tongue piece 12c so as to ensure a through path 12b for injecting the resin P2 (molten polymer material).

  The cross-sectional shape of the through passage 12b is formed in a rectangular shape in FIG. 2 and in a circular shape in FIG. Further, the protruding direction of the rectangular tongue piece 12c is formed in a direction away from the connecting portion between the cover portion 11 and the mounting portion 12 in FIG. 2, and in a direction approaching the connecting portion in FIG.

  Furthermore, an injection communication path (hereinafter simply referred to as a communication path) 12d that connects the injection tip (lower end) of the through passage 12b and the gap 20 is formed in a semicircular cross-sectional shape on the mounting surface 12a of the mounting section 12. Has been. And the cover part 11 is formed in the form which has a predetermined width in the extending direction of the electric wire 8, and the clearance gap 20 is formed in the form which penetrates the cover part 11 over the whole width. Further, since the cover portion 11 and the attachment portion 12 have substantially the same width, the joining width (joining area) of the joining portion 22 can be made to correspond to the holding width (holding area) of the holding portion 21.

(2) First mold opening process (FIGS. 1B and 3)
The movable mold 2 is separated from the fixed mold 3 while holding the fixed clip 10 inside, and moves to the door trim 7 (and the electric wire 8 disposed on the main surface 7a) located at a position away from the fixed mold 3. The movement of the movable mold 2 between the fixed mold 3 and the door trim 7 may be carried by an operator with a hand or using a transporter, but is automated by being held by a robot (manipulator such as an arm). This will improve work efficiency and accuracy. Alternatively, when the movable die 2 is separated and raised from the fixed die 3, the door trim 7 may be inserted and held between them, and the movable die 2 may be lowered and set on the door trim 7. In this case, the horizontal direction Work space is small.

(3) Second injection step (FIG. 1 (c), FIG. 4, FIG. 7, FIG. 8)
The movable mold 2 is combined with the door trim 7 so that the main surface 7a becomes a parting line surface, and the cavity 4 that forms the gap 20 inside the cover portion 11 is connected to the cavity 4 from the nozzle 6 of the injection device 5 through the communication port 6a. The two molten resin P2 (molten polymer material) is injected, and the second molten resin P2 forms the holding portion 21 and the joining portion 22. The holding part 21 is formed by solidifying the second molten resin P <b> 2 so as to cover the electric wire 8 with the gap 20 and press and hold it on the inner surface 11 a of the part 11. The joint portion 22 is formed by the second molten resin P2 leaking between the attachment surface 12a of the attachment portion 12 and the main surface 7a of the door trim 7 and solidifying.

  At this time, as shown in FIG. 4, the position of the axis O of the nozzle 6 (communication port 6a) is set to the same position as in the first injection step. This is because the through-passage 12b and the tongue piece 12c are provided in the mounting portion 12 of the fixing clip 10 as described above. Since the injection position (position of the axis O) of the nozzle 6 can be shared in the first injection process and the second injection process, it is not necessary to change the nozzle connection position for each process. Will improve.

  Moreover, since the injection position of the nozzle 6 can be shared, it is also easy to use the same type of material (for example, both polyamide resins) for the first molten resin P1 and the second molten resin P2. And it becomes easy to join the fixed clip 10 with the holding | maintenance part 21 and the junction part 22, and also it becomes a saving of material cost.

  Further, as shown in FIG. 7, due to the injection pressure of the second molten resin P <b> 2 injected from the nozzle 6, the tongue piece 12 c is bent toward the injection tip side (downward side), and the closed state of the through passage 12 b is released. The two-stage injection can be easily carried out with a simple and inexpensive configuration in which the flaky tongue 12c is formed like a shutter and pushed open by the injection pressure.

  Further, by pushing the tongue piece 12c open, the second molten resin P2 passes through the through passage 12b, passes through the communication passage 12d (between the attachment surface 12a of the attachment portion 12 and the main surface 7a of the door trim 7), and then the gap. 20 (cavity 4). Therefore, the second molten resin P <b> 2 is cooled below the temperature at which a fusion layer is formed between the second molten resin P <b> 2 and the outer sheath 8 b of the electric wire 8, and then solidifies in the gap 20 to form the holding portion 21. As a result, the heat effect of the second molten resin P2 flowing (injecting) into the gap 20 does not easily reach the outer sheath 8b of the electric wire 8, and the outer sheath 8b is not melted or heat-sealed. ) Can be suppressed.

  As shown in FIG. 8 or FIG. 9, a part of the second molten resin P <b> 2 flows out to the outside of the cover part 11 through the gap 20 in a form penetrating the cover part 11 over the entire width and solidifies. When the second molten resin P2 is injection-molded by the direct molding method (second injection process), the cavity internal pressure can be released from the through-shaped gap 20 and the mold clamping force (the pressing force of the door trim 7) on the door trim 7 is reduced. it can. For example, the pressing force can be reduced to a level of several tens of kg, and the injection device 5 itself can be miniaturized to prevent the door trim 7 from being deformed. Further, since the second molten resin P2 that has passed through the through-shaped gap 20 flows out to the outside of the covering portion 11 along the electric wire 8 and is solidified, the holding width of the holding portion 21 is increased and the electric wire 8 is extended. Misalignment in the direction can be prevented. Furthermore, since both ends in the width direction of the gap 20 are open, the cooling effect of the second molten resin P2 injected into the gap 20 is enhanced, and the thermal influence on the jacket 8b of the electric wire 8 (occurrence of insulation failure) is further increased. Decrease.

(4) Second mold opening process (FIG. 1 (d), FIG. 5)
When the 2nd molten resin P2 solidifies and the holding part 21 and the junction part 22 are formed, the electric wire 8 and the fixing clip 10 are hold | maintained and fixed to the main surface 7a of the door trim 7, and the electric wire fixing structure is comprised. Therefore, the movable mold 2 can be separated from the main surface 7a of the door trim 7, and the next first injection process (FIGS. 1A and 2) can be started. By the time the mold 2 is released, the through-passage 12b and the tongue piece 12c of the mounting portion 12 are filled and filled with the second molten resin P2 that has been cooled and solidified.

  In this way, by configuring the electric wire fixing structure in which the fixing clip 10 (the cover portion 11 and the attachment portion 12), the holding portion 21, and the joint portion 22 are combined, the outer sheath 8b of the electric wire 8 melts or the second molten resin. It becomes difficult to heat-bond to P2, and the occurrence of insulation failure (short circuit) can be prevented. Further, the second molten resin P2 is solidified in a form in which the electric wire 8 is pressed and held on the inner surface of the covering portion 11 (that is, a form in which the electric wire 8 is sandwiched between the covering portion 11 and the holding portion 21) to form the holding portion 21. A joint portion 22 is formed between the attachment surface 12 a of the attachment portion 12 and the main surface 7 a of the door trim 7. As a result, the electric wires 8 can be held and fixed to the main surface 7a of the door trim 7 while preventing the wires 8 from coming off or falling off.

  In the first injection step, the step of attaching / fixing the electric wire 8 is simplified by injecting the first molten resin P1 and integrally forming the fixing clip 10 including the cover portion 11 and the attachment portion 12. Installation time can be shortened. Further, in the first mold opening process, the fixed clip 10 is held inside the movable mold 2 and used as it is as a cavity component, thereby improving the working efficiency in the direct molding process (second injection process). it can. Further, in the second injection step, the second molten resin P2 is cooled by the communication passage 12d and the gap 20 until it is solidified, so that the outer sheath 8b of the electric wire 8 is melted or thermally fused to the second molten resin P2. It is difficult to prevent insulation failure (short circuit).

(Modification)
FIG. 10 shows an example of fixing another long member. FIG. 10A shows a case where a flat wire harness 81 (long member) obtained by bundling a plurality of (for example, four) electric wires 8 with a vinyl tape 81 a or the like is held and fixed to the main surface 7 a of the door trim 7. Indicates. In FIG. 10B, a round wire harness 82 (long member) in which a plurality of (for example, four) electric wires 8 are bundled in a round shape with a vinyl tape 82 a or the like is held and fixed to the main surface 7 a of the door trim 7. Show the case. FIG. 10C shows a case where the resin pipe 83 (long member) or the rubber hose 84 (long member) is held and fixed to the main surface 7 a of the door trim 7. 10, parts having the same functions as those in FIGS. 1 to 9 (Example 1) are denoted by the same reference numerals and description thereof is omitted.

(Example 2)
FIG. 11 shows another example of the fixing structure. In the fixing clip 110 (long member fixing tool) shown in FIG. 11, attachment portions 12 and 12 are formed symmetrically on both ends of a semi-cylindrical cover portion 11. Further, a through passage 12b, a tongue piece 12c (closed portion), a communication passage 12d, and the like are also formed in each attachment portion 12. Therefore, in the first injection step, the first molten resin P1 (molten polymer material) is injected almost simultaneously from the paired nozzles 6 and 6, and the fixing clip 110 (the cover portion 11 and the attachment portions 12 and 12) are integrated. Molded. On the other hand, in the second injection step, the second molten resin P2 (molten polymer material) is injected almost simultaneously from the paired nozzles 6 and 6, and the holding portions 21 and 21 and the joining portions 22 and 22 are formed. In this way, in the fixing structure of FIG. 11, the electric wires 8 (long members) are held and fixed symmetrically, so that the holding force can be applied more evenly to disperse the thermal effect.

(Example 3)
FIG. 12 shows still another example of the fixing structure. In the fixing clip 210 (long member fixing tool) of FIG. 11, a communication path 211d of the second molten resin P2 (molten polymer material) is formed on the distal end side (the side where the mounting portion 212 is not connected) of the cover portion 211. Yes. As a result, the attachment portion 212 does not have a through passage, a communication passage, or the like. Therefore, in the first injection step, the first molten resin P1 (molten polymer material) is injected from the primary side injection device 51, the nozzle 61, and the communication port 61a, and the fixing clip 210 (the cover portion 211 and the attachment portion 212). Are integrally molded. On the other hand, in the second injection step, the second molten resin P2 injected from the secondary side injection device 52, the nozzle 62, and the communication port 62a flows into the cavity 4 (gap 20) from the communication path 211d, and holds the holding portion. 221 is formed. In this embodiment, the bonding portion 222 is formed by interposing an adhesive layer or a welding layer between the mounting surface 212a of the mounting portion 212 and the main surface 7a of the door trim 7 (fixed member).

  Thus, in the fixing structure of FIG. 12, different materials are used for the first molten resin P1 and the second molten resin P2 by using different injection devices 51 and 52 on the primary side and the secondary side. It becomes easy. Therefore, in order to more firmly configure the fixing clip 210 and the electric wire fixing structure (holding portion 221), the width for selecting these resin materials is widened.

  In FIG. 11 (Embodiment 2) and FIG. 12 (Embodiment 3), parts having the same functions as those in FIGS. 1 to 9 (Embodiment 1) are denoted by the same reference numerals and description thereof is omitted.

  In the above description, the case where the long members 8, 81, 82, 83, and 84 are held and fixed to the door trim 7 is described. However, as a member to be fixed, a flat plate shape as well as a board material and a panel material other than the door trim are described. It is applicable even if it is not a member.

Process drawing which shows roughly the fixing method for implement | achieving the fixing structure of this invention. Explanatory drawing which shows the 1st injection | emission process of FIG. Explanatory drawing which shows the 1st type | mold opening process of FIG. Explanatory drawing which shows the 2nd injection process of FIG. Explanatory drawing which shows the 2nd mold opening process of FIG. The perspective view which shows an example of a fixing clip, a top view, front sectional drawing, and a side view. Explanatory drawing which shows the action | operation of the tongue piece in a 2nd injection process. Explanatory drawing which shows the formation state of the holding | maintenance part and junction part in a 2nd injection process. Explanatory drawing which shows the fixing structure based on the fixing method of FIG. Explanatory drawing which shows the example of fixation of another elongate member. Explanatory drawing which shows the other example of fixing structure. Explanatory drawing which shows the further another example of a fixing structure.

Explanation of symbols

1 Mold 2 Upper mold (movable mold)
3 Lower mold (fixed mold)
4 Cavity 5 Injection device 6 Nozzle (Injection nozzle)
7 Door trim (fixed member)
7a Main surface (back surface; parting line surface)
8 Electric wire (long member)
8a Core wire (core material)
8b Outer coating 10 Fixing clip (long member fixing tool)
DESCRIPTION OF SYMBOLS 11 Cover part 11a Inner surface 12 Mounting part 12a Mounting surface 12b Through-passage (through-passage for injection)
12c Tongue piece (closing part)
12d Communication path (Injection communication path)
20 Gap 21 Holding part 22 Joining part P1 First molten resin (molten polymer material)
P2 Second molten resin (molten polymer material)

Claims (9)

A single or bundle-like long member arranged along the main surface of a fixed member such as a vehicle door trim having a property that the outer peripheral portion is softened by heat is held on the main surface of the fixed member. A long member fixing structure for a vehicle for fixing,
A cover part that bypasses the outside of the long member so that a predetermined gap is formed between the outer peripheral surface of the long member and the inner surface of the long member when viewed from the extending direction of the long member. When,
At least one end side of the cover portion is integrated and extends away from the long member, and an attachment portion having an attachment surface that is directly or indirectly joined to the main surface of the fixed member through another member;
A molten polymer material injected into a gap between the cover part and the long member comprises a holding part formed by solidifying the long member in a form of pressing and holding the long member on the inner surface of the cover part,
The molten polymer material injected into the gap is solidified to form the holding portion, so that the long member is sandwiched between the cover portion and the holding portion, and the mounting surface of the mounting portion is a portion of the fixed member. A long member fixing structure for a vehicle, wherein the long member is held and fixed to a main surface of the fixed member by being joined to a main surface. A single or bundle-like long member arranged along the main surface of a fixed member such as a vehicle door trim having a property that the outer peripheral portion is softened by heat is held on the main surface of the fixed member. A long member fixing structure for a vehicle for fixing,
When viewed from the extending direction of the elongate member, the outer surface of the elongate member is arched so that a predetermined gap is formed between the outer peripheral surface of the elongate member and the inner surface of the elongate member. And a covering portion covering in a closed manner,
An attachment part that is integrally formed with one end side of the cover part and extends away from the elongated member, and has an attachment surface that joins the main surface of the fixed member;
A holding part formed by solidifying the molten polymer material injected into the gap between the covering part and the long member in a form that presses and holds the long member on the inner surface of the covering part;
The molten polymer material is provided between a mounting surface of the mounting portion and a main surface of the fixed member, and a joining portion formed by solidifying,
The molten polymer material injected into the gap solidifies to form the holding portion, whereby the long member is sandwiched between the cover portion and the holding portion, and the molten polymer material forms the joint portion. In this way, the attachment surface of the attachment portion and the main surface of the member to be fixed are joined, and the long member is held and fixed to the main surface of the member to be fixed. Construction.   The molten polymer material passes between the mounting surface of the mounting portion and the main surface of the fixed member and then flows into the gap, thereby causing a fusion layer between the outer peripheral portion of the long member. The long member fixing structure for a vehicle according to claim 1, wherein the holding portion is formed by being solidified in the gap after being cooled to a temperature equal to or lower than a temperature at which the vehicle is generated. The cover portion has a predetermined width in the extending direction of the elongate member, and the gap is formed in a form that penetrates the cover portion over the entire width,
2. The molten polymer material is solidified in the gap to form the holding portion while allowing a part of the molten polymer material to flow out to the outside of the covering portion through the gap in the penetrating form and solidify. 4. The long member fixing structure for a vehicle according to any one of items 3 to 3.   The molten polymer material is injected into a cavity that includes the cover portion and the attachment portion with the main surface of the member to be fixed as a parting line surface, and forms a gap in the penetration form inside the cover portion; The long member fixing structure for a vehicle according to claim 4, wherein the holding portion is formed by being solidified in a gap. The cover portion is formed in a semicircular shape when viewed from the extending direction of the long member,
The long member fixing structure for a vehicle according to any one of claims 1 to 5, wherein the attachment portion is formed so as to extend from one end of the semicircular cover portion toward a radially outer side of the cover portion.   7. The fixed member is a flat plate-like member made of a non-metallic organic material such as resin or kenaf and having the main surface formed as a flat surface. The long member fixing structure for vehicles. A long member fixing tool used in the long member fixing structure for a vehicle according to any one of claims 1 to 7,
The long member fixing tool, wherein the cover part and the attachment part are integrally formed by injection molding.   The long member fixture according to claim 8, wherein the same material as the molten polymer material forming the holding portion is used and injection-molded in advance before the holding portion is formed.

Images