JP2008143254A - Covering material for flat harness, and arrangement structure of flat harness - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent breakage of a flat harness by holding a covering material at a predetermined position of a vehicle body without applying the pressure to the flat harness inside while miniaturizing the covering material. <P>SOLUTION: A flat harness arrangement structure comprises a flexible tube body for passing a flat harness through its hollow part, and a holding member which is fitted to and mounted on a terminal of the tube body. Tube body is flat and its shape is similar to an outer shape of the flat harness passing through the tube body. A very small space is formed between an inner surface of the hollow part and an outer surface of the flat harness. A locking hole is formed in a terminal on the fitting side to the holding member. The holding member comprises an insertion part having a U-shaped section, a locking part projecting from an intermediate position of outer surfaces of both sides of the insertion part, and a flange part projecting from one end of the outer surfaces of both sides of the insertion part. The insertion part is inserted in the space, the flange part is butted to a fore end face of the tube body, and the locking part is inserted in and locked to the locking hole. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an exterior material for a flat harness and a wiring structure of a flat harness covered with the exterior material for the flat harness, and more specifically, for a flat harness without applying pressure to the internal flat harness. The exterior material can be held at a predetermined position of the vehicle body.

2. Description of the Related Art Conventionally, a wire harness routed in an automobile is protected by an exterior material made of a flexible tube such as a corrugated tube in order to prevent an electric wire from being damaged due to interference with peripheral components.
The corrugated tube is a bellows-like cylindrical body in which annular crests and troughs are alternately provided in the axial direction, and can be freely bent according to the bending when it is routed at a bent portion. Therefore, it is effective as an exterior material for a wire harness.
On the other hand, a harness routed between a movable member such as a door or a seat and the vehicle body needs to bend and extend repeatedly following the movement of the movable member. Conventionally, a flat harness in which a strip-shaped conductor is covered with an insulating resin material has been widely used.

  However, when such a flat harness is packaged with the corrugated tube, as shown in FIG. 6A, the corrugated tube 2 that is an exterior material is larger than the flat harness 1 that is inserted inside. As shown in FIG. 6B, the clamp 4 for holding the corrugated tube 2 to the support unit 3 on the vehicle body side or the movable member side is enlarged, and as a result, the overall size of the support unit 3 is also increased. There is a problem that it is difficult to route in a narrow space between the movable member and the vehicle body (see JP-A-2005-145258).

  In order to solve the problem of such an increase in size, it is necessary to use a flexible tube having an outer shape approximated to the outer shape of the flat harness to be packaged and a hollow portion as the outer material of the flat harness. In this case, if the periphery of the tube is pressed with a clip or the like and the tube is held in a predetermined position, pressure is applied to the internal flat harness, and the flat harness is likely to be disconnected. In addition, when the follow-up operation to the movable member is performed, the laminated flat harness is displaced due to the inner circumference difference. However, when pressure is applied to the flat harness as described above, the stress due to the displacement is also caused. Since it joins the flat harness, the possibility of disconnection may be further increased.

JP 2005-145258 A

  The present invention has been made in view of the above problems, and can hold the exterior material in a predetermined position of the vehicle body without applying pressure to the internal flat harness while reducing the size of the exterior material for the flat harness. As a result, an object is to effectively prevent disconnection of the flat harness.

In order to solve the above-described problem, the first invention includes a flexible tube main body that allows a flat harness to pass through a hollow portion;
A holding member made of a resin molded product fitted and attached to the end of the tube main body,
The outer shape and the hollow portion of the tube main body have a flat shape having a narrow surface orthogonal to a pair of opposed wide surfaces, and are similar to the outer shape of the flat harness to be penetrated, and the inner surface of the hollow portion and the flat portion While having a minute gap between the outer surface of the harness and the terminal on the fitting side with the holding member, the pair of wide surfaces are provided with locking holes,
The holding member includes an insertion portion having a U-shaped cross section, a locking portion that protrudes from an intermediate position between outer surfaces on both sides of the insertion portion, and a flange portion that protrudes from one end of the outer surface on both sides of the insertion portion. With
For the flat harness, the insertion portion of the holding member is inserted into the gap, the flange portion is abutted against the distal end surface of the tube body, and the locking portion is inserted and locked into the locking hole. Provides exterior materials.

As described above, the exterior material for a flat harness according to the present invention includes a flexible tube main body that allows the flat harness to pass through the hollow portion, and a resin molded product that is fitted and attached to the end of the tube main body. It consists of members.
That is, the holding member for holding the tube main body penetrating the flat harness in a predetermined position is not attached so as to press the tube main body but is fitted and attached to the end of the tube main body. So, even if the tube body's outer shape and hollow part are flattened to resemble the outer shape of the flat harness that penetrates, the internal flat harness remains free without any pressure being applied. The tube body can be held at a predetermined position, and the disconnection of the flat harness can be effectively prevented.

Further, as described above, the U-shaped insertion section of the holding member is inserted into a minute gap formed between the inner surface of the hollow portion of the tube main body and the outer surface of the flat harness that penetrates the hollow portion. The flange portion that protrudes from one end of the outer surface on both sides of the insertion portion abuts against the distal end surface of the tube body, and the locking portion that protrudes from the intermediate position on the outer surface on both sides of the insertion portion It is set as the structure made to insert and lock in the locking hole.
Therefore, until the flange portion of the holding member hits the distal end surface of the tube main body, the insertion portion is simply inserted into the gap in the hollow portion of the tube main body, and the locking portion of the holding member is securely inserted into the locking hole of the tube main body. It is inserted and locked, and a strong fitting between the holding member and the tube main body becomes possible by a simple insertion operation.
In addition, after the fitting, only the locking portion of the holding member and the distal end portion of the flange portion are exposed to the outside of the tube body, so that the entire exterior material including the holding member can be made compact. .

  In addition, as a gap opened between the inner surface of the hollow portion of the tube main body and the outer surface of the flat harness that penetrates the hollow portion, the insertion portion that protrudes the locking portion from both sides can be inserted, and Even after the fitting, it is preferable to provide a gap that leaves a space that does not hinder the smooth movement of the flat cable.

The material of the tube body is not particularly limited as long as it has flexibility. For example, rubber such as ethylene-propylene rubber (EPDM) or various elastomers can be used. It is preferable to use an olefin elastomer.
On the other hand, it is preferable to use a hard resin as the material of the holding member made of a resin molded product, for example, nylon, polypropylene terephthalate (PPT), polyacetal (POM), or the like.

It is preferable that the hollow portion of the tube body has a size that can penetrate a plurality of laminated flat harnesses.
As described above, by setting the hollow portion of the tube body to a size that allows a plurality of stacked flat harnesses to pass therethrough, the plurality of flat harnesses can be covered with a compact exterior material. In addition, since a plurality of flat harnesses can be freely penetrated through the hollow portion of the tube body, even if a deviation occurs due to the difference in the inner circumference of the laminated flat harnesses during a follow-up operation to a movable member, etc. , Stress due to misalignment is hardly applied to the flat harness, and disconnection of the flat harness can be effectively prevented.

  A second invention provides a flat harness wiring structure in which a flat harness sheathed with the exterior material is wired to a vehicle, and a flange portion of the holding member is inserted into a mounting portion provided on a vehicle body side. is doing.

Since the flange portion projects from both sides of the end portion of the exterior material, when the flat harness covered with the exterior material is routed to the vehicle, as described above, the flange portion is provided on the vehicle body side. The exterior material can be firmly attached to the attachment part simply by being inserted into the fitting groove of the part.
It is preferable that the clearance between the flange portion and the fitting groove of the attachment portion is as small as possible, about 0 to 0.1 mm, and the flange portion is press fitted into the fitting groove for attachment. Thereby, the said tube main body which penetrated the flat harness can be firmly hold | maintained to the attaching part by the side of a vehicle body.

The holding members are respectively fitted to both ends of the tube body, and the flange portions of the respective holding members are inserted into the fitting grooves of the mounting portions provided on both sides of the place where the flat harness is to be routed. However, the holding member may be fitted to one end of the tube body and the other end may be held by another holding means in accordance with the degree of bending of the flat harness in the holding portion. .
Moreover, it is preferable that the flat harness covered with the said exterior material is routed in the location which needs to make a motion of a movable member follow, such as doors, such as a slide door of a motor vehicle, and a side door, and a seat slide.

  In particular, the flat harness is routed between a vehicle body and a door, and is provided with the attachment portion for attaching the flange portion of the holding member to the door or / and the vehicle body, and the tube main body continuously with the attachment portion. A housing portion for allowing the flat harness drawn out from the housing to be bent and a flat harness pull-out passage continuing to the housing portion are provided, and the flat harness can be bent and housed in the housing portion when the door is closed. preferable.

  As described above, the opening and closing operation of the door can be performed in a free state by providing a housing portion that allows the flat harness drawn out from the tube body to be bent continuously after the mounting portion to which the flange portion of the holding member is attached. Deviation due to the inner circumference difference generated in the following flat harness can be absorbed by the housing portion. In particular, when the door is closed, the displacement due to the difference in the inner circumference of the flat harness becomes large, so if the flat harness is bent in the housing to absorb the excess length, the stress due to the displacement is applied to the flat harness. It becomes difficult to apply, and the disconnection of the flat harness can be more effectively prevented.

  As described above, according to the present invention, the holding member for holding the tube main body penetrating the flat harness in a predetermined position is fitted and attached to the end of the tube main body. Even if the hollow part and the outer shape are flattened to resemble the outer shape of the flat harness that penetrates, the inner flat harness remains free and no pressure is applied. It can hold | maintain in a position and can prevent the disconnection of a flat harness effectively.

Further, as described above, the insertion portion of the holding member is inserted into a minute gap formed between the inner surface of the hollow portion of the tube main body and the outer surface of the flat harness penetrating the hollow portion, and the insertion The flange portion protruded from one end of the outer surface on both sides of the tube portion is abutted against the distal end surface of the tube body, and the engaging portion protruded from the intermediate position of the outer surface on both sides of the insertion portion is provided on the tube body. Since it is configured to be inserted and locked in the blind hole, the holding member's locking portion is simply inserted into the gap in the hollow portion of the tube body until the flange portion of the holding member hits the distal end surface of the tube body. The tube body is securely inserted and locked in the locking hole of the tube main body, and a strong fitting between the holding member and the tube main body is enabled by a simple insertion operation.
In addition, after the fitting, only the locking portion of the holding member and the distal end portion of the flange portion are exposed to the outside of the tube body, so that the entire exterior material including the holding member can be made compact. .

  Furthermore, as described above, by setting the hollow portion of the tube main body to a size that allows a plurality of stacked flat harnesses to pass therethrough, the plurality of flat harnesses can be packaged with a compact exterior material. In addition, since a plurality of flat harnesses can be freely penetrated through the hollow portion of the tube body, even if a deviation occurs due to the difference in the inner circumference of the laminated flat harnesses during a follow-up operation to a movable member, etc. , Stress due to misalignment is hardly applied to the flat harness, and disconnection of the flat harness can be effectively prevented.

  According to the second invention, when the flat harness covered with the exterior material is routed to the vehicle, the flange portion protruded from both sides of the end portion of the exterior material is fitted to the attachment portion provided on the vehicle body side. The exterior material can be firmly attached to the attachment portion simply by being inserted into the groove.

  Further, as described above, the housing portion is provided in a free state by providing an accommodating portion for allowing the flat harness drawn from the tube main body to be bent continuously from the attachment portion to which the flange portion of the holding member is attached. Deviation due to the inner circumference difference that occurs in the flat harness that follows the opening / closing operation can be absorbed by the accommodating portion on the end side. In particular, when the door is closed, the displacement due to the difference in the inner circumference of the flat harness becomes large, so if the flat harness is bent in the housing to absorb the excess length, the stress due to the displacement is applied to the flat harness. It becomes difficult to apply, and the disconnection of the flat harness can be more effectively prevented.

Embodiments of the present invention will be described with reference to the drawings.
1 to 5 show an embodiment of the present invention, and an exterior material 10 for a flat harness includes six stacked flat harnesses 20 (flats in a stacked state) routed between a slide door 30 and a vehicle body 31. It is externally mounted on the harness 20A).

As shown in FIG. 1, an exterior material 10 for a flat harness includes a tube main body 11 made of an olefin-based elastomer and a holding member 12 made of a nylon resin molded product that is fitted and attached to the end of the tube main body 11. ing.
In the present embodiment, the holding member 12 is fitted and attached to one end of the tube body 11, but the holding member 12 may be fitted and attached to both ends of the tube body 11.

The shape of the peripheral wall 11a and the hollow part 11b of the tube main body 11 is a flat shape provided with a pair of opposed wide surfaces 11a-1 and 11b-1 and narrow surfaces 11a-2 and 11b-2 in the orthogonal direction, and is penetrated. It is similar to the outer shape of the flat harness 20A (shown in FIGS. 2 and 3) in a stacked state. Moreover, as shown in FIG. 2, the inner surface (the wide surface 11b-1 and the narrow surface 11b-2) of the hollow portion 11b and the outer surface (the wide surface 20A-1 and the narrow surface 20A-) of the flat harness 20A in a stacked state to be penetrated. 2), a gap G is formed.
Furthermore, a locking hole 11c communicating with the pair of wide surfaces 11a-1 and 11b-1 is provided at the end of the tube main body 11 on the fitting side with the holding member 12.

On the other hand, the holding member 12 is made to protrude from one end of both side outer surfaces of the insertion part 12a, an insertion part 12a having a U-shaped cross section, a locking part 12b protruding from an intermediate position between both outer surfaces of the insertion part 12a. A flange portion 12c is provided.
The distance from the flange portion 12c of the holding member 12 to the locking portion 12b and the distance from the distal end surface 11d of the tube body 11 to the locking hole 11c are the same, and the insertion portion 12a of the holding member 12 is inserted into the gap G. When the flange portion 12c is abutted against the distal end surface 11d of the tube body, the locking portion 12b of the holding member 12 is inserted and locked into the locking hole 11c of the tube body 11.
Further, the gap G can be inserted into the insertion portion 12a in which the locking portion 12b protrudes from both sides, and the insertion portion 12a does not hinder the smooth movement of the flat cable 20 even after fitting. It is a gap where space remains.

As shown in FIG. 2, the exterior of the flat harness exterior material 10 to the laminated flat harness 20 </ b> A is first penetrated through the hollow portion 11 b of the tube body 11.
Thereafter, the insertion portion 12a of the holding member 12 is inserted into the gap G, the flange portion 12c is abutted against the distal end surface 11d of the tube body 11, and the locking portion 12b of the holding member 12 is locked to the locking hole 11c of the tube body 11. Is inserted and locked to complete the exterior (FIG. 3).

As shown in FIG. 4, the laminated flat harness 20 </ b> A packaged with the flat harness exterior material 10 is routed between the slide door 30 and the vehicle body 31.
In the present embodiment, one end of the exterior member 10 fitted with the holding member 12 is attached to the support member 32 on the slide door 30 side, while the other end of the exterior member 10 not fitted with the holding member 12 is attached. A clip or the like (not shown) is attached to the support member 33 on the vehicle body 31 side.

  As shown in FIG. 5, the support member 32 on the slide door 30 side is provided with an opening 32 a for drawing in the flat harness 20 </ b> A sheathed with the exterior material 10, and the flange portion 12 c and the locking member 12 of the holding member 12. An attachment portion 32b provided with fitting grooves 32b-1 and 32b-2 for press-fitting the portion 12b is provided. Further, a housing portion 32c is provided continuously to the mounting portion 32b so as to be able to bend the flat harness 20 pulled out from the tube main body 11, and a flat harness lead-out passage 32d is provided continuously to the housing portion 32c.

The holding member 12 fitted to the tube body 11 of the exterior member 10 drawn through the opening 32a press-fits the flange portion 12c and the locking portion 12b into the fitting grooves 32a-1 and 32a-2 of the mounting portion 32a, respectively. Thus, it is attached to the attachment portion 32a.
In the present embodiment, the clearance between the fitting groove 32a-1 and the flange portion 12c and the clearance between the fitting groove 32a-2 and the locking portion 12b are both 0.1 mm. Further, the connector 34 connected to the end of the flat harness 20 drawn out through the flat harness pull-out passage 32c is inserted into the housing portion 32b continuous with the mounting portion 32a. Is connected to the connector of the door harness terminal routed in the slide door 30.
On the other hand, the other end of the exterior member 10 is attached to the support member 33 on the vehicle body side as described above, and the connector 35 connected to the terminal of the flat harness 20 is connected to the connector of the wire harness terminal routed to the vehicle body 31. ing.

In FIG. 4, P1 indicates the fully open state of the slide door 30, P4 indicates the fully closed state, and P2 and P3 indicate the half open state which is an intermediate stage.
5A shows the inside of the support member 32 when the slide door is fully open, and FIG. 5B shows the inside of the support member 32 when the slide door is fully closed. .

  As shown in FIG. 4, the flat harness 20 </ b> A covered with the flat harness exterior material 10 follows the opening / closing operation of the slide door 30, and in the fully closed state of the slide door, the displacement due to the inner peripheral difference of each flat harness 20 is present. Therefore, as shown in FIG. 5 (B), the displacement of the flat harness 20 is absorbed by largely curving the extra length portion of the flat harness 20 due to the displacement in the housing portion 32c.

  As described above, since the holding member 12 for holding the tube main body 11 penetrating the laminated flat harness 20A on the slide door 30 side is fitted and attached to the end of the tube main body 11, the tube main body 11 is attached. Even if the size is reduced to a flat shape similar to the outer shape of the laminated flat harness 20A penetrating the tube, the tube main body 11 is slid in a free state without any pressure being applied to the inner flat harness 20. It can be held at a predetermined position on the door side, and disconnection of the flat harness 20 can be effectively prevented.

Moreover, as above-mentioned, the inner surface (11b-1, 11b-2) of the hollow part 11b of the tube main body 11, and the outer surface (20A-1, 20A-2) of the laminated flat harness 20A which penetrates the hollow part 11b, The insertion portion 12a of the holding member is inserted into the gap G formed between the flange portion 12c and the flange portion 12c protruding from one end of the outer surface on both sides of the insertion portion 12a against the distal end surface 11d of the tube body 11, and A locking portion 12b that protrudes from an intermediate position on the outer surface of both side portions of the insertion portion 12a is inserted and locked into a locking hole 11c provided in the tube main body 11.
Therefore, the engaging portion 12b of the holding member 12 is simply inserted into the gap G of the tube main body hollow portion 11b until the flange portion 12c of the holding member 12 abuts against the distal end surface 11d of the tube main body 11, and the locking portion 12b of the holding member 12 is 11 is securely inserted and locked in the locking hole 11c, and the holding member 12 and the tube main body 11 can be firmly fitted by a simple insertion operation.
In addition, after fitting, only the locking portion 12b of the holding member 12 and the distal end portion of the flange portion 12c are exposed to the outside of the tube body 11, so that the entire exterior material 10 including the holding member 12 is compact. Can be.

  In addition, as described above, the hollow portion 11b of the tube body 11 is set to a size that allows a plurality of (six) stacked flat harnesses 20A to pass therethrough, so that the plurality of flat harnesses 20 can be compactly packaged. Can be packaged. Further, since a plurality of flat harnesses 20 can be freely penetrated through the hollow portion 11b of the tube main body 11, a deviation due to the inner circumferential difference of each flat harness 20 is caused during the follow-up operation to the slide door 30. Even if it arises, the stress by shift | offset | difference is hard to apply to the flat harness 20, and the disconnection of the flat harness 20 can be prevented effectively.

  Further, when the laminated flat harness 20 </ b> A covered with the exterior material 10 is routed between the slide door 30 and the vehicle body 31, the flange portion 12 c that protrudes from both ends of the exterior material 10 is provided on the slide door side. The exterior material 10 can be firmly attached to the attachment portion 32b simply by being inserted into the fitting groove 32b-1 of the attachment portion 32b provided on the support member 32.

  In addition, as described above, the housing portion 32c through which the flat harness 20 pulled out from the tube main body 11 can be bent is provided continuously with the mounting portion 32b to which the flange portion 12c of the holding member 12 is attached. In this state, the shift due to the inner circumference difference generated in the flat harness 20 following the opening / closing operation of the slide door 30 can be absorbed by the accommodating portion 32c on the end side. In particular, when the sliding door 30 is closed, the displacement due to the inner circumferential difference of the flat harness 20 becomes large. Therefore, if the flat harness 20 is curved in the housing portion 32c to absorb the extra length, the displacement is caused. Stress is less likely to be applied to the flat harness 20, and disconnection of the flat harness 20 can be more effectively prevented.

It is a disassembled perspective view of the exterior material for flat harnesses of the embodiment of the present invention. (A) is a principal part enlarged view which shows the state which penetrated the flat harness laminated | stacked on the tube main body, (B) is the figure seen from the holding member side. It is a principal part enlarged view which shows the state which coat | covered the laminated flat harness with the exterior material for flat harnesses. It is a principal part enlarged view which shows the state which wired the flat harness coat | covered with the exterior material for flat harnesses between the sliding door and the vehicle body. It is the schematic which shows the inside of the supporting member by the side of a slide door, (A) is a figure at the time of a slide door fully open state, (B) is a figure at the time of a slide door fully closed state. It is drawing which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Exterior material for flat harness 11 Tube main body 11a External shape 11b Hollow part 11a-1, 11b-1 Wide surface 11a-2, 11b-2 Narrow surface 11c Locking hole 11d Front end surface 12 Holding member 12a Insertion part 12b Locking Portion 12c flange portion 20 flat harness 20A laminated flat harness 20A-1 wide surface 20A-2 narrow surface 30 slide door 31 vehicle body 32 slide door side support member 32a opening 32b mounting portion 32b-1, 32b-2 fitting groove 32c Housing part 32d Flat harness drawer passage 33 Car body side support member 34, 35 Connector

Claims (4)

A flexible tube body that allows the flat harness to penetrate the hollow portion;
A holding member made of a resin molded product fitted and attached to the end of the tube main body,
The outer shape and the hollow portion of the tube main body have a flat shape having a narrow surface orthogonal to a pair of opposed wide surfaces, and are similar to the outer shape of the flat harness to be penetrated, and the inner surface of the hollow portion and the flat portion While having a minute gap between the outer surface of the harness and the terminal on the fitting side with the holding member, the pair of wide surfaces are provided with locking holes,
The holding member includes an insertion portion having a U-shaped cross section, a locking portion that protrudes from an intermediate position between outer surfaces on both sides of the insertion portion, and a flange portion that protrudes from one end of the outer surface on both sides of the insertion portion. With
For the flat harness, the insertion portion of the holding member is inserted into the gap, the flange portion is abutted against the distal end surface of the tube body, and the locking portion is inserted and locked into the locking hole. Exterior material.   The exterior material for a flat harness according to claim 1, wherein the hollow portion of the tube main body has a size capable of penetrating a plurality of laminated flat harnesses.   A flat harness that is externally covered with the exterior material according to claim 1 or 2 is routed to a vehicle, and the flange portion of the holding member is inserted into an attachment portion provided on the vehicle body side for installation. Construction.   The flat harness is routed between a vehicle body and a door. The flat harness is provided on the door or / and the vehicle body with the attachment portion for attaching the flange portion of the holding member, and is continuously pulled out from the tube main body to the attachment portion. The flat harness is inserted into the housing part so that the flat harness can be bent and a flat harness pull-out passage continuous to the housing part, and the flat harness can be bent and housed in the housing part when the door is closed. The flat harness wiring structure described.

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