JP2002010453A - Blow-molded holding construction for wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a holding construction which is formed by blow molding as a tubuler body and at the same, time can mount a wire harness on the outer surface of the tubular body. SOLUTION: Haness-fitting members 36, 39 are provided on an installing part 33 for a harness, and the installing part 33 is located on a molding surface 31a of the first mold 31 in a mold 30 for blow molding. The harness fitting members 36, 39 are in projected state and are disposed on the molding surface 31a at required intervals. The harness fitting members 36, 39 are inserted into securing holes 26 which are disposed on a wire harness WH at required intervals. The wire harness WH is held, so as not to move by the installing part 33. By setting a tubular body molded by blow molding in this condition, the wire harness WH is mounted on the outer surface of the tube body after molding, at the same time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blow molding die wire harness holding structure, and more particularly, to a blow molding die comprising a first die having a molding surface and a second die forming a pair with the first die. By holding the wire harness immovably on the molding surface and blow molding the hollow tubular body, the wire harness holding device allows the wire harness to be simultaneously attached to the outer surface of the hollow tubular body after molding. It is about structure.

[0002]

2. Description of the Related Art In recent years, vehicles such as passenger cars are equipped with a large number of on-vehicle electronic devices such as on-vehicle computers, various instrument units and audio units, and are equipped with instrument panels, floor consoles, roof panels and the like. On the back side of the vehicle interior member represented by
Numerous wire harnesses are provided to electrically connect each vehicle-mounted electronic device to form an electrical system. This wire harness is composed of an electric wire portion composed of a plurality of electric wires and a connector or terminal connected to an end of the electric wire portion,
The electric wire portion uses an electric wire fixing member (an electric wire fixing clip or the like) and the connector or the like uses a connector fixing member (a connector fixing clip or the like) to be attached to the back surface of the vehicle interior member, the vehicle body, the reinforcement bar, or the like. It has become. The electric wire portion has been put to practical use, for example, one in which a plurality of electric wires are bound into one, or a flat cable-like one in which a plurality of electric wires are integrally formed in parallel.

On the other hand, an air outlet is provided at a required position on the vehicle interior member, and the temperature-controlled air sent from an air conditioner unit installed in front of the passenger compartment is blown out from the air outlet into the passenger compartment. As a result, the air temperature of the entire passenger compartment is controlled.
For this reason, on the back side of the vehicle interior member, a hollow cylindrical air guide duct that connects the air conditioner unit side and the air outlet is provided, and temperature-controlled air from the air conditioner unit passes through the air guide duct. Distribution guide to the corresponding air outlet. This air guide duct is
At present, blow molding of a hollow parison made of high-density polyethylene or the like is mainly used in consideration of manufacturing cost, rigidity, and the like.

[0004]

By the way, in order to prevent the generation of abnormal noise and the damage of the electric wire portion due to the contact with the on-vehicle electronic device or the like, the wire harness should avoid interference with the on-vehicle electronic device or the like. It is important to fix to the vehicle body, the reinforcement bar, or the back surface of the vehicle interior member. However, since the back side of the vehicle interior member is very narrow and complicated, the wire portion must be complicatedly and forcibly bent by using a large number of the wire fixing members and the connector fixing members. . For this reason,
The man-hours related to the wiring harness layout design increase,
The molding cost of wire fixing members and connector fixing members increases,
Due to various factors, such as the work of attaching the fixing member to the electric wire portion and the connector, and the work of attaching the electric wire portion and the connector to the vehicle body or vehicle interior members, etc., the cost of the wiring harness is significantly increased. There was an inherent problem of running out.

[0005] When the wire harness is to be mounted on the outer surface of the air guide duct, for example, the wire fixing member, the connector fixing member, etc. are attached to the blow molded air guide duct in a later step. I had no choice but to use it. Therefore, even when the wire harness is attached to the air guide duct, the above-mentioned problems (1) to (4) have not been solved at all.

[0006]

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above-mentioned problems suitably. In this case, a hollow cylindrical body is blow-molded by using a blow molding die, and a wire harness is formed on the outer surface of the hollow cylindrical body. It is an object of the present invention to provide a blow-molding wire harness holding structure capable of holding the wire harness immovably on a molding surface of the blow-molding die so as to be able to mount the wire harness.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems and to achieve the intended object, the present invention relates to a first method having a molding surface.
A blow mold for blow molding a hollow cylindrical body by pressing a parison blown with a pressure medium against the molding surface, comprising a mold and a second mold forming a pair with the mold,
A harness locking member, which is always provided at a predetermined interval in a protruding state from the molding surface at a predetermined portion of the harness located on the molding surface of the first mold, and a wire harness forming an electrical system are required. The wire harness is provided at every interval, and includes locking holes that allow the harness locking member to be fitted therein. The wire harness is formed by fitting the respective harness locking members into the respective locking holes. The wire harness is configured to be simultaneously mounted on the outer surface of the hollow cylindrical body after the hollow cylindrical body is blow-molded in this state while being held immovably at the planned portion along the harness. It is characterized by.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of a wire harness holding structure of a blow mold according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a partial perspective view schematically showing a structure for holding a wire harness of a blow mold according to a preferred embodiment of the present invention, and FIG. 2 is a schematic perspective view of the blow mold partially broken. In the present embodiment, an air guide duct (FIG. 7) disposed on the back side of the vehicle interior member is exemplified as the hollow cylindrical body, and a blow mold for blow molding the air guide duct 10 will be described. . That is, when the duct main body 11 of the air guide duct 10 is blow-molded from a parison, the wire harness holding structure of the embodiment employs a wire harness WH serving as an electrical system.
Is held on the molding surface 31a of the blow mold 30 in advance, so that the wire harness WH is mounted simultaneously with the formation of the duct body 11.

(Air Guide Duct) First, the air guide duct 10 will be schematically described with reference to FIGS. 7 and 8. FIG. The air guide duct 10 of the present embodiment is an integrally molded product obtained by blow molding a hollow parison (not shown) made of high-density polyethylene or the like using the blow mold 30 shown in FIG. The main body is a long duct-shaped duct body 11 having a first opening 12 and a second opening 13. The first opening 12 is connected to an air delivery unit of an air conditioner unit (not shown), and the second opening 13 is
It is connected to an air outlet (not shown) provided on a vehicle interior member such as the instrument panel. On the outer surface of the duct main body 11, a wire harness WH composed of a wire portion EC and a connector CN provided at a terminal thereof is mounted so as to extend in the longitudinal direction of the duct main body 11. The illustrated air guide duct 10 is
It is very simply represented for convenience of explanation,
In many cases, the actual air guide duct is a long cylindrical body having a complicated shape such as a curved portion in accordance with the shape of the arrangement portion.

(Harness holding portion) The outer surface of the duct main body 11 in the air guide duct 10 of the embodiment is
A harness holding portion 15 for locking and fixing the wire harness WH is provided. This harness holding portion 15
A connector holding portion 16 for fixing the connector CN constituting the wire harness WH to the outer surface of the duct main body 11,
And an electric wire holding portion 17 for fixing the electric wire portion EC to the outer surface of the duct main body 11.

(Connector Holding Portion) The connector holding portion 16 is mainly composed of a connector holding member 18 formed as a separate member from the duct main body 11, and
Connector housing 18a for housing and holding the
The base 8a includes a mounting seat 18b which is engaged with the duct body 11. The mounting seat 18b has a stepped plate shape, and a locking piece 18c that protrudes outward is integrally formed at an edge of the lower surface side. On the other hand, in the duct body 11, a part of the duct body 11 is deformed at the time of blow molding, and the engagement rib 1 for holding the locking piece 18c is formed.
9 is formed, and the engagement rib 19 is attached to the mounting seat 18b.
And the connector accommodating portion 18a is attached to the duct body 1
1 is fixed upright from the outer surface. Therefore, the connector CN is fixed to the duct main body 11 via the connector holding body 18 fixed and held to the duct main body 11.

(Electric wire holding portion) The electric wire holding portion 17
Based on the premise that the flat cable-shaped electric wire portion EC connected to the connector CN is locked and held, it is separated in the short direction of the duct main body 11 by an interval suitable for the width dimension h of the electric wire portion EC. And a plurality of holding ribs 20, 20 provided at required intervals in the longitudinal direction of the duct body 11.
And a locking rib 21 and an engagement rib 22 that penetrate the electric wire portion EC from the center in the width direction of the electric wire portion EC and are provided at required intervals in the longitudinal direction of the duct main body 11. These holding ribs 20, locking ribs 21 and engaging ribs 22 are all formed by bulging and deforming a part of the duct main body 11 at the time of blow molding the duct main body 11.

Each of the holding ribs 20 is shown in FIG.
As shown in the figure, the longitudinal sectional shape of the duct body 11 broken in the transverse direction has a substantially L-shaped hook shape, and the ribs 20 facing each other hold the outer ends of both ends of the electric wire EC. By doing so, both ends of the electric wire portion EC are locked to the duct main body 11. Further, the locking rib 21 is provided as shown in FIG.
As shown in FIG. 5, the duct body 11 has a substantially T-shaped hook-like vertical cross-section broken in the transverse direction.
The central portion in the short direction of C is locked to the duct body 11. Further, as shown in FIG.
1 has a substantially I-shaped longitudinal cross-section in the short direction, and is attached to the center of the electric wire portion EC in the short direction.

Therefore, the connector CN is fixedly held by the connector holding member 18 fixed to the duct main body 11, and the wire harness WH is
The wire portion EC is locked by the ribs 20, 21, and 22 formed from a part of the duct body 11, thereby being mounted and held along the outer surface of the duct main body 11.

(Blow Mold) Next, a blow mold 30 used to mold the air guide duct 10 with a wire harness shown in FIG.
The wire harness holding structure to be implemented at 0 will be described. As shown in FIG. 2, the blow mold 30 according to the embodiment includes a first mold 31 and a second mold 3 paired with the first mold 31.
2 and a first mold 31 and a second mold 3 respectively.
Forming surfaces 31a and 32a are formed on the surface 2 assuming a contour shape corresponding to a half body of the duct body 11. Then, the wire harness WH is immovably mounted and held on the harness side-by-side portion 33 located on the molding surface 31a of the first mold 31.

(Scheduled Portion of Harness) In the scheduled portion of harness 33, a holder set portion 34 recessed for accommodating and setting the connector holder 18 and the electric wire portion EC extend. Rib forming grooves (recesses) 35 which are recessed at required intervals along the region to form the holding ribs 20
And harness locking members 36 and 39 for setting and holding the electric wire portion EC on the molding surface 31a are provided. Of these, the holder setting section 34 is provided with the connector holder 18.
The mounting seat 18b is formed in a shape that allows accommodation in the inverted state, and the mounting seat 18b is exposed from the molding surface 31a. Also, each of the rib forming grooves 35
Is an elongated groove extending in a direction orthogonal to the extending direction of the electric wire portion EC, and the entire length L is a width dimension h of the electric wire portion EC.
It is set to be longer than appropriate. Therefore, when the electric wire portion EC is set along the harness extension portion 33, as shown in FIG. 5, the electric wires EC protrude from both sides of the electric wire portion by a required amount, and the openings 42 and 42 facing the forming surface 31a are formed. Is to be done.

(Harness Locking Member) The harness locking member includes:
The harness holding structure of the present embodiment is formed together with the locking holes 26 formed in the electric wire portion EC of the wire harness WH, and the first harness holding structure is located at the center bottom of the rib forming groove 35.
It is roughly divided into a harness locking member 36 and a second harness locking member 39 provided substantially in the middle between the rib forming grooves 35 provided at required intervals. As shown in FIGS. 3 and 4, the first harness locking member 36 and the second harness locking member 39 are provided on the molding surface 31 of the first mold 31.
a, which is a column-shaped locking pin that is disposed so as to be able to protrude and retract in the installation holes 38, 41 formed in the opening holes a, respectively.
1 is elastically urged by coil springs 37 and 40 as elastic members housed and installed at the bottom of the molding surface 3.
The posture is maintained in a protruding state by a required amount (for example, about the thickness of the electric wire portion EC) from 1a.

In each of the first harness locking members 36,
When receiving a pressing force from the duct body 11 which expands during blow molding of the duct body 11, as shown in FIG.
The installation hole 3 against the elasticity of the coil spring 37
8 and withdraws from the molding surface 31a while completely immersing into the inner surface of the rib 8, and the tip end surface thereof constitutes a part of the bottom surface of the rib molding groove 35. Further, in each of the second harness locking members 39, the duct main body 1 which expands during blow molding of the duct main body 11 is provided.
When the pressing force is received from the coil 1, as shown in FIG. 6 (b), it is retracted from the molding surface 31 a while completely immersing into the installation hole 41 against the elasticity of the coil spring 40, and the tip surface thereof is molded. This constitutes a part of the surface 31a.

(Locking Hole) On the other hand, each locking hole 2 formed in the covering material 25 in the electric wire portion EC of the wire harness WH.
Reference numeral 6 denotes an opening formed substantially at the center in the short direction of the electric wire portion EC, and is formed in series at a required interval on the assumption that the first harness engaging member 36 and the second harness engaging member 39 are arranged. Are arranged. Each locking hole 26 is slightly larger than the diameter of the corresponding first harness locking member 36 and second harness locking member 39 in consideration of the elastic deformation of the covering material 25 made of resin. It is set to a small diameter. As a result, each of the first harness locking members 36 and each of the second harness locking members 39 are fitted and engaged with the corresponding locking holes 26 so as to appropriately expand the corresponding locking holes 26.
As a result, the electric wire portion EC of the wire harness WH is connected to the molding surface 31a of the first mold 31 (the planned harness extension portion) by engaging the respective harness locking members 36 and 39 with the corresponding locking holes 26. 33) is held immovable.

(Formation of Air Guide Duct) In the embodiment of the air guide duct 10 using the blow mold 30 described above, the wire harness WH is held at the harness extension portion 33 of the first mold 31. It is done with. That is, the connector CN of the wire harness WH is stored and held in the connector
Is set upside down on the holder setting section 34 of the first mold 31 to be set and held in the first mold 31. On the other hand, as shown in FIG. 5A and FIG.
Each first harness locking member 36 and each second harness locking member 39 protruding from the molding surface 31a of the first mold 31
Are fitted and engaged in the respective locking holes 26 so as to be substantially in close contact with the molding surface 31a. As a result, the wire harness WH is immovably set and held in the harness extension portion 33 of the first mold 31.

After a hollow parison (not shown) arrives between the first mold 31 and the second mold 32 which are waiting to be separated, both molds 31 and 32 are closed and a pressure medium is applied to the parison. (High-pressure gas, high-pressure air, etc.)
The expanded parison is pressed against the molding surfaces 31a and 32a, and the duct body 11 is formed.

At this time, in the connector holder 18, the duct body 11 formed by expanding the hollow parison contacts the mounting seat 18b of the holder 18 and the duct body 11 is pressed by the pressure medium. Part of the mounting seat 1
The engagement rib 19 is formed around the back side of the locking piece 18c of FIG. 8b. Therefore, in the connector holding body 18, the mounting seat 18b is engaged with the duct main body 11 by the formed engaging rib 19 holding the locking piece 18c, whereby the connector accommodating part 18a is moved from the outer surface of the duct main body 11 to the outside. Since the connector CN is fixed in the upright state, the connector CN is fixed to the duct main body 11.

On the other hand, in each of the rib forming grooves 35, FIG.
As shown in (b), after the duct main body 11 formed by expanding the hollow parison contacts the molding surface 31a and the covering material 25 of the electric wire part EC, a part of the duct main body 11 is caused by the pressure of the pressure medium. Bulge out from the openings 42, 42 on both sides into the rib forming groove 35. As a result, the portions bulging into the rib forming grooves 35 through the respective openings 42, 42 become substantially L-shaped holding ribs 20, 20, and are solidified in a state of holding the outer ends of the electric wires EC. Then, the end of the electric wire portion EC is locked to the outer surface of the duct body 11.

Also, each of the first harness locking members 3
At 6, as shown in FIG. 5B, after the expanded hollow parison comes into contact with the covering material 25 of the electric wire portion EC and the upper surface of the first harness engaging member 36, the pressure of the pressure medium is reduced by the first harness engaging member. This is applied to the stop member 36. Therefore, the first harness locking member 3 receiving the pressing force of the duct body 11
6 is pushed toward the installation hole 38 against the elasticity of the coil spring 37 and is separated from the locking hole 26, and is completely immersed into the installation hole 38 to be removed from the molding surface 31a and the rib molding groove 35. Since the duct body 11 is retracted, a part of the duct main body 11 is allowed to swell from the locking hole 26 into the rib forming groove 35. As a result, the portion that swells into the rib forming groove 35 via the locking hole 26 extends to both sides along the rib forming groove 35 and becomes a substantially T-shaped locking rib 21 and solidifies. The central portion of the part EC is locked to the outer surface of the duct body 11.

Further, each of the second harness locking members 3
In FIG. 9, as shown in FIG. 6B, after the expanded hollow parison comes into contact with the covering material 25 of the electric wire portion EC and the upper surface of the second harness engaging member 39, the pressure of the pressure medium is reduced by the second harness engaging member. This is applied to the stop member 39. Therefore, the second harness locking member 3 receiving the pressing force of the duct body 11
9 is pushed toward the installation hole 41 against the resilience of the coil spring 40 and detaches from the locking hole 26, and is completely immersed into the installation hole 41 and retreated from the molding surface 31a. A part of the duct body 11 is allowed to swell into the locking hole 26. As a result, the portion bulging into the locking hole 26 becomes the substantially I-shaped engaging rib 22 and solidifies, and is engaged (welded) to the central portion of the electric wire portion EC.

The holding ribs 20 and the locking ribs 21 formed from a part of the duct body 11 are used for the cross-sectional shape and size of the electric wire portion EC, the shape and size of the rib forming groove 35, and the pressure medium. The shape differs depending on the molding conditions based on the total pressure and the like, and depending on the molding conditions, the opposing holding ribs 2
It may be possible to assume a shape in which the leading end of the locking rib 21 abuts on the zero.

When the air guide duct 10 is removed from the first mold 31 and the second mold 32 after the blow molding of the duct body 11 is completed, the first harness engaging members 36 and the second harness Since the locking between the locking member 39 and the corresponding locking hole 26 has been released, it is possible to remove the die very easily. Then, as shown in FIG. 5 (c), each of the first harness locking members 36 returns to the state of protruding from the rib forming groove 35 and the forming surface 31a by the elastic return of the coil spring 37. In addition, each of the second harness locking members 3
9 shows the coil spring 40 as shown in FIG.
Due to the elastic return, it returns to the state protruding from the molding surface 31a.

As described above, the blow mold 30 of this embodiment is
Can perform the blow molding step of the duct body 11 and the step of attaching the wire harness WH to the outer surface of the duct body 11 in the same step, and the work of attaching the wire harness WH to the duct body 11 is completely omitted. Significant cost reduction associated with the arrangement of the wire harness WH is possible. Moreover, in the wire harness holding structure implemented in the blow mold 30, the wire portion EC of the wire harness WH is immovably held on the molding surface 31 a of the first mold 31 prior to the blow molding of the duct body 11. Therefore, the wire harness WH does not shift during blow molding of the duct main body 11, and the duct main body 11
It is possible to accurately attach the wire harness WH to a required outer surface position.

Further, the first harness locking member 36 and the second harness locking member 39 constituting the wire harness holding structure are retracted from the molding surface 31a when receiving the pressing force of the expanding duct body 11, so that the The formation of the locking ribs 21 and the engagement ribs 22 which are formed as a part of the duct main body 11 is allowed. In particular, since the first harness locking member 36 is located at the bottom of the rib forming groove 35 recessed in the forming surface 31a, the hook-shaped locking rib 21 can be formed, and the wire harness for the duct main body 11 can be formed. WH (Electric wire part EC)
Is greatly increased. Therefore, in the air guide duct 10 in which the molding is completed, the electric wire portion EC of the wire harness WH is connected to the duct main body 11 by the respective retaining ribs 21 and the respective engaging ribs 22 together with the respective holding ribs 20.
The duct main body 1 is securely fixed to the outer surface of the duct main body 1 at least while the duct main body 1 is provided at the back side of the vehicle interior member and provided for implementation.
1 does not separate from the outer surface. Furthermore, a separate connector fixing member, an electric wire fixing member, and the like are not required at all, so that significant cost reduction can be achieved.

On the other hand, if an automatic facility for setting the wire harness WH is used for the harness extension portion 33 on the molding surface 31a of the first mold 31, the work of setting the wire harness WH can be automated. Becomes possible,
This can also be expected to reduce costs.

If the covering material 25 of the electric wire portion EC and the duct main body 11 in the wire harness WH are made of the same material, the electric wire portion EC is bonded (welded) to the duct main body 11.
This is effective when it is desired to secure the entirety of the electric wire portion EC.

In the above embodiment, the first harness locking member 36 located in the rib forming groove 35 and the forming surface 31a
The wiring harness holding structure in which every other second harness locking member 39 is disposed is exemplified, but the arrangement of the harness locking member is not limited to this. That is, the wire harness holding structure may be configured with only the first harness locking member 36 or configured with only the second harness locking member 39.

Further, in the above embodiment, the hollow cylindrical body is
Although the air guide duct provided on the back side of the vehicle interior member has been exemplified, the hollow cylindrical body is not limited to this.

[0034]

As described above, according to the blow molding die wire harness holding structure according to the present invention, the blow molding step of the hollow cylindrical body and the attaching step of the wire harness to the outer surface of the hollow cylindrical body are performed. Can be carried out in the same step, so that the work of attaching the wire harness to the hollow cylindrical body is completely omitted, and a beneficial effect is achieved in that the cost associated with the wiring harness can be significantly reduced. In addition, the respective harness locking members provided on the blow mold are fitted and engaged with the respective locking holes provided on the wire harness so that the wire harness is immovably held on the molding surface of the first mold. There is also an advantage that the wire harness can be accurately attached to a desired position on the outer surface of the hollow cylindrical body after molding without the wire harness being shifted during blow molding of the hollow cylindrical body.

Each of the harness locking members retreats from the molding surface when receiving the pressing force of the hollow cylindrical body during blow molding, thereby forming a locking rib formed of a part of the hollow cylindrical body. Allow. Moreover, if the harness locking member is positioned in the concave portion formed in the molding surface, a part of the parison bulging into the concave portion through the locking hole is formed as a hook-shaped locking rib, and the hollow cylindrical body is formed. , The engaging force of the wire harness to the wire harness can be increased. Therefore, the wire harness is securely fixed to the outer surface of the hollow cylindrical body by the respective locking ribs formed from a part of the hollow cylindrical body, and is not separated. Furthermore, a separate connector fixing member, an electric wire fixing member, and the like are not required at all, so that significant cost reduction can be achieved. In addition, as the hollow cylindrical body, for example, an air guide duct or the like installed on the back side of the vehicle interior member is targeted.

[Brief description of the drawings]

FIG. 1 is a partial perspective view schematically showing a wire harness holding structure of a blow molding die according to a preferred embodiment of the present invention.

FIG. 2 is a schematic perspective view of a blow mold shown partially broken.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 1;

FIG. 5A is a cross-sectional view showing a state in which a wire portion of a wire harness is held at a harness extension portion of a blow molding die by fitting a first harness locking member into a locking hole;
(b) is the first pressure due to the pressing force of the hollow cylindrical body during blow molding.
FIG. 3C is a cross-sectional view illustrating a state in which the harness locking member is retracted, and a part of the hollow cylindrical body is swelled into the rib forming groove through the opening and the locking hole. It is sectional drawing which shows the state which removes | releases a hollow cylindrical body with the electric wire part latched by the rib.

FIG. 6A is a cross-sectional view showing a state in which a wire portion of a wire harness is held at a harness extension portion of a blow molding die by fitting a second harness locking member into a locking hole;
(b) is the second pressure due to the pressing force of the hollow cylindrical body during blow molding.
FIG. 3C is a cross-sectional view illustrating a state in which the harness locking member is retracted and a part of the hollow cylindrical body swells into the locking hole, and FIG. It is sectional drawing which shows the state which removes a body.

FIG. 7 is a schematic view of an air guide duct as a hollow cylindrical body formed by performing a molding of a duct main body and a mounting of a wire harness in the same process using a blow molding die in which the wire harness holding structure shown in FIG. 2 is implemented. It is a perspective view.

8 is a sectional view taken along line VIII-VIII in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Duct main body (hollow tubular body) 21 Engagement rib (rib) 22 Engagement rib (rib) 26 Engagement hole 31 First mold 31a, 32a Molding surface 32 Second mold 33 Harness alongside scheduled portion 35 Rib Forming groove (recess) 36 First harness locking member (harness locking member) 37, 40 Coil spring (elastic member) 38, 41 Installation hole 39 Second harness locking member (harness locking member) WH Wire harness

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) B60R 16/02 621 B62D 25/06 C B62D 25/06 H02G 3/04 J H02G 3/04 B29C 33/14 3/38 H01B 13/00 513Z // B29C 33/14 H02G 3/26 M H01B 13/00 513 3/28 F (72) Inventor Masayuki Takahashi 8-1, Tocho, Fujiicho, Anjo-shi, Aichi Pref. (72) Inventor Mitsutaka Ohara 2-6-1 Marunouchi, Chiyoda-ku, Tokyo Furukawa Electric Co., Ltd. (72) Inventor Hiroshi Matsuda 2-6-1 Marunouchi, Chiyoda-ku, Tokyo Furukawa Inside the Electric Industry Co., Ltd. (72) Inventor Minoru Asano 2-6-1 Marunouchi, Chiyoda-ku, Tokyo Furukawa Electric Co., Ltd. None (reference) 3D003 AA11 BB01 CA38 DA11 4F202 AD18 AH33 CA15 CB12 CK11 CK75 CK90 4F208 AD18 AH33 LA01 LB12 LJ05 LJ21 5G357 DA06 DB03 DC12 DG10 5G363 AA07 AA16 BA02 DC02

Claims (4)

[Claims] 1. A first mold (31) having a molding surface (31a, 32a).
And a second mold (32) forming a pair with the same, and a parison blown with a pressure medium is pressed against the molding surface (31a, 32a) to blow-mold the hollow cylindrical body (11). In the blow mold, the harness is planned to be always protruded from the molding surface (31a) at required intervals on the harness extension portion (33) located on the molding surface (31a) of the first mold (31). Harness locking members to be installed (36, 39)
And locking holes (26) provided at required intervals in a wire harness (WH) forming an electrical system and allowing the harness locking members (36, 39) to be fitted therein. By fitting members (36, 39) into the respective locking holes (26), the wire harness
(WH) is immovably held in the harness alongside scheduled portion (33), and the hollow cylindrical body (11) is blow-molded under this state, thereby forming the hollow cylindrical body (11) after molding. A blow-molding wire harness holding structure, wherein the wire harness (WH) is simultaneously mounted on an outer surface. 2. The harness locking member (36, 39) is disposed so as to be able to protrude and retract in an installation hole (38, 41) opened in a molding surface (31a) of the first mold (31). When elastically urged by the elastic members (37, 40), it always projects from the molding surface (31a), and receives a pressing force from the cylindrical hollow body (11) as the blow molding proceeds. The blow-molding wire harness according to claim 1, wherein the wire harness is retracted into the installation hole (38, 41) against the elasticity of the elastic member (37, 40) to release the holding of the wire harness (WH). Retention structure. 3. The harness locking member (36) is located at the bottom of a concave portion (35) formed in the molding surface (31a), and the concave portion (35) is formed at the time of blow molding of the hollow cylindrical body (11). 35), and allows a part of the hollow cylindrical body (11) to enter the recess (35) through the locking hole (26), thereby allowing the wire harness (WH The blow-molding wire harness holding structure according to claim 1 or 2, wherein the rib (21, 22) for locking the outer surface of the hollow cylindrical body (11) with the rib (21, 22) is allowed. 4. The blow-molding wire harness holding device according to claim 1, wherein the hollow cylindrical body is a duct main body of an air guide duct installed on a rear side of a vehicle interior member. Construction.