• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An outer member for an electrical harness is formed in the form of a tube (29) for housing and protecting one or more conductors; it includes an outer layer (44) having an outer surface (31), an inner layer (45) having an inner surface (34), and an intermediate layer (46). The materials of the layers have different hardnesses, the intermediate layer (46) may be softer than the outer layer (44) at least, in order to smooth the profiles of deformation and contact with the conductors, from the outside to the inside the tube (29).
    公开号:FR3063381A1
    申请号:FR1851315
    申请日:2018-02-16
    公开日:2018-08-31
    发明作者:Hiroyuki Yoshida；Hideomi Adachi；Shinji OSHITA；Hiroki Kawakami；Kazunori Takata；Masatoshi MIZOBUCHI
    申请人:Toyota Motor Corp；Yazaki Corp；
    IPC主号:
    专利说明:

    Holder (s): YAZAKI CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA.
    Extension request (s)
    Agent (s): BREVALEX Limited liability company.
    EXTERNAL ELEMENT AND ELECTRICAL HARNESS.
    FR 3 063 381 - A1
    An external element for an electrical harness is formed in the form of a tube (29) for housing and protecting one or more conductors; it includes an outer layer (44) which has an outer surface (31), an inner layer (45) which has an inner surface (34), and an intermediate layer (46). The materials of the layers have different hardnesses, the intermediate layer (46) being able to be softer than the external layer (44) at least, in order to smooth the profiles of deformation and contact with the conductors, from the outside to the inside the tube (29).

    JCI-P
    EXTERIOR ELEMENT AND ELECTRICAL HARNESS
    Context of the invention <Field of the invention>
    [0001]
    The present invention relates to an exterior for accommodating and protecting a plurality of conduction paths, and to electrical including the exterior and conduction element.
    a element a or a a beam the ways of
    description of related art>
    [0002]
    An electrical harness for electrically connecting devices mounted in a vehicle is used. The electrical harness includes an external element in the form of a tube, and one or a plurality of conduction paths housed in this external element. A ringed tube adopted as an external element constituting the electric harness is known (for example, see Patent Document 1: JP-A-2011254614). The corrugated tube has concave bellows portions and convex bellows portions, and is formed with flexible tube portions having a shape in which the concave bellows portions and the convex bellows portions alternate continuously in a direction of an axis of the tube as a whole. The electrical harness including this corrugated tube is produced in a long size. The wiring harness is placed so as to pass under a sub-floor of the vehicle.
    JCI-P [0003] [Patent document 1] JP-A-2011-254614 [0004]
    In the wiring harness of the related art, since the wiring harness is placed so as to pass under the floor of the vehicle, for example when the wiring harness receives an external force from a projected or other stone or when a higher load or equal to a certain charge is intensely applied to the wiring harness, there is a risk of damage · of a corrugated tube (an external element). If the damage takes place, the concern is that the damage leads to the disconnection of the conduction paths or to a breakdown.
    Summary [0005]
    One or more embodiments provide an outer member which is hardly damaged, and a wiring harness having this outer member to be able to improve reliability or the like.
    [0006]
    In one aspect (1), one or more embodiments provide an exterior member for an electrical harness which is formed in the form of a tube so as to accommodate and protect one or a plurality of conduction paths. The outer member includes an outer layer structure part which has an outer surface and which is an outermost layer, an inner layer structure part which has an inner surface and which is an outermost layer
    JCI-P internal, and an intermediate layer structure part which is one or a plurality of layers between the external layer structure part and the internal layer structure part. The outer layer structure part, the middle layer structure part and the inner layer structure part adhere tightly to each other The middle layer structure part is made of softer material than those of the the outer layer structure and the inner layer structure part, or the middle layer structure part and the inner layer structure part are made of softer material than that of the outer layer structure part. The outer member includes at least a pair of neighboring layers in which the materials of one layer and the other layer are different in terms of hardness.
    [0007]
    In one aspect (2), the outer member is deformed in a state such that the deformation of the outer surface and the deformation of the inner surface are dissimilar due to the part of the intermediate layer structure, the deformation of the surface internal is less than the deformation of the external surface, and the internal surface is in approximately planar contact with the one or more conduction paths, when an external force is applied to the external surface at a point or a line.
    [0008]
    JCI-P
    In one aspect (3), the outer member is a flexible tube portion having flexibility, or a combination of a straight tube portion in which the one or more conduction paths are distributed in a straight line, and the flexible tube part.
    [0009]
    In one aspect (4), the wiring harness includes the exterior element according to any of aspects (1) to (3) and the one or more conduction paths are accommodated and protected in the exterior element.
    [0010]
    According to aspect (1), since the external element for an electrical harness is formed in a multilayer structure, the external element can be more difficult to damage than a known example. Namely, since at least the middle layer structure part of the multilayer structure is formed from a soft material, if an impact or the like is designed to be absorbed by the middle layer structure part when a force external acts on the external element, the flexible tube parts can be hardly damaged. If at least the middle layer structure part is formed from a soft material, the outer layer structure part (and the inner layer structure part) of the multilayer structure are formed from more material. as hard as that of the intermediate layer structure part, and thus a collision resistance function (impact resistance, or improved solidity) can be maintained. In
    JCI-P result, the external element can be hardly damaged. Therefore, an effect capable of providing the hardly damaged outer member is exerted.
    [0011]
    According to aspect (1), since the external element is formed in the multilayer structure as described above, the external element can be more difficult to damage than the known example even without adding a new component. Therefore, the effect capable of providing the hardly damaged outer member is exerted.
    [0012]
    In addition, according to aspect (1), since the external element is formed in the multilayer structure as described above, a function of, for example, heat dissipation or heat resistance required for the wiring harness in addition to the collision resistance function can also be maintained on the outer layer structure part (and the inner layer structure part). Therefore, an effect capable of providing the exterior element which can be used in various environments is exerted.
    [0013]
    According to aspect (2), when an external force acts on the external surface of the external element in the state of the point or line, the deformation of the external surface and the deformation of the internal surface are formed in the uncompensated state due to the existence of the intermediate layer structure part. Since the deformation of the surface
    Internal JCI-P is attenuated in relation to the deformation of the external surface, the internal surface can be brought into contact with the conduction paths more or less by contact with surfaces. Therefore, an effect capable of absorbing the shock against the conduction pathways is exerted, and an effect capable of preventing disconnection or breakdown is also exerted.
    [0014]
    According to aspect (3), even either the external element, the whole of which becomes the flexible tube part or the external element in which the flexible tube part and the straight tube part are mixed can be hardly damaged by the multilayer structure. Therefore, the effect capable of providing the hardly damaged outer member is exerted.
    [0015]
    According to aspect (4), since the electric bundle includes the external element according to any one of aspects (1) to (3), an effect capable of supplying the electric bundle having high reliability or the like is exerted.
    Brief description of the drawings [0016]
    Figures IA and IB are diagrams illustrating a wiring harness of the present invention, in which Figure 1Ά is a block diagram illustrating a posed state of a high voltage electric beam, and Figure IB is a block diagram illustrating a posed state of a beam
    JCI-P low voltage electric different from the high voltage electric harness of Figure IA;
    Figure 2 is a diagram illustrating a state of laying track and a configuration of the wiring harness of Figure IA;
    Figure 3 is a diagram illustrating the state of the laying track and the configuration of the wiring harness of Figure IA (in which an external element is a modification of Figure 2);
    Figure 4 is a sectional view of the electrical harness (taken in a cross section at a position of a concave bellows portion of a flexible tube portion in the outer member);
    Figures 5A and 5B are views of a flexible tube portion in an outer member, in which Figure 5A is a view from the outside, and Figure 5B is a cutaway taken in a direction of an axis of the tube ; and
    Figures 6A and 6B are explanatory views of a case in which an external force acts on an external surface of the flexible tube part.
    Detailed description [0017]
    An electrical harness includes an external element in the form of a tube, and conduction paths which are received and protected in this external element. The outer member has foldable flexible tube parts, and an external surface of these flexible tube parts is formed in a form in which it has concave bellows parts and
    JCI-P convex bellows parts. The flexible tube parts include an outer layer structure part which becomes a part of an outermost layer, an inner layer structure part which becomes a part of an innermost layer, and a structure structure part an intermediate layer which becomes part of one or more layers between the outer layer structure part and the inner layer structure part. The outer member having this multilayer structure is formed in a state in which the layers of the outer layer structure part, the middle layer structure part and the inner layer structure part are brought into close contact. The middle layer structure part is formed from softer material than those of the outer layer structure part and the inner layer structure part. The middle layer structure part and the inner layer structure part are formed from a softer material than that of the outer layer structure part. In addition, the outer member has neighboring layers formed from materials which differ in terms of hardness.
    Embodiment
    Hereinafter, an embodiment will be described with reference to the drawings. Figures IA and IB are diagrams illustrating a wiring harness of the present invention, in which Figure IA is a block diagram illustrating a laid state of a high voltage wiring harness, and Figure IB is
    JCI-P a schematic diagram illustrating a posed state of a low voltage electric harness different from the high voltage electric harness of Figure IA. Figures 2 and 3 are diagrams illustrating a state of laying path and configuration of the wiring harness of Figure IA, and Figure 4 is a section of the wiring harness. Figures 5A and 5B are views of a portion of flexible tubing in an outer member, in which Figure 5A is a view from the outside, and Figure 5B is a cutaway. Figures 6A and 6B are explanatory views of a case in which an external force acts on an external surface of the flexible tube part.
    [0019]
    In the present embodiment, the present invention is adopted for an electric harness which is placed on a hybrid vehicle (which can be an electric vehicle or a conventional vehicle driven by a motor).
    <Configuration of hybrid vehicle 1>
    In Figure IA, a reference sign 1 indicates a hybrid vehicle. The hybrid vehicle 1 is a vehicle which mixes two powers of an engine 2 and a motor unit 3 and which is driven by the power. The drive unit 3 is supplied with electric power from a battery (battery pack) 5 via an inversion unit 4. The motor 2, the drive unit 3 and the inversion unit 4 are mounted in an engine compartment 6 located in a position in which front wheels
    JCI-P ίο are present in this embodiment. The battery 5 is mounted at a rear portion of the vehicle 7 where rear wheels are present (it can be mounted in a vehicle interior which is present at the rear of the engine compartment 6).
    [0021]
    The drive unit 3 and the reversing unit 4 are connected by a high voltage electric harness 8 (a motor cable for high voltage). The battery 5 and the reversing unit 4 are also connected by a high-voltage electric harness 9. An intermediate portion 10 of the electric harness 9 is placed under a vehicle sub-floor 11 in a vehicle (a vehicle body). The intermediate portion 10 is placed along the vehicle sub-floor 11 almost parallel. The vehicle sub-floor 11 is a known body (a vehicle body) as well as a so-called panel element, and has a through hole formed in a predetermined position. The wiring harness 9 is inserted in a watertight manner in the through hole.
    [0022]
    The electrical harness 9 and the battery 5 are connected via a connection block 12 supplied for the battery 5. An external connection means such as a shield connector 14 installed on a harness terminal 13 close to a rear end of the harness 9 is electrically connected to the connection block 12. The harness 9 and the reversing unit 4 are electrically connected by means
    S64582
    FR JCI-P for external connection such as a shield connector 14 installed on a harness terminal 13 near a front end of the harness 9.
    [0023]
    The power unit 3 includes an engine and a generator. The inversion unit 4 includes an inverter and a converter in a configuration thereof. The drive unit 3 is formed as an engine assembly including a shielding box. The reversing unit 4 is also formed as a reversing assembly including a shielding box. Battery 5 is a Ni-MH-based battery or a Liion-based battery, and it is formed by modularization. For example, an electrical storage device such as a capacitor can also be used. Naturally, the battery 5 is not particularly limited as long as it can be used in the hybrid vehicle 1 or the electric vehicle.
    [0024]
    In Figure IB, a reference sign 15 indicates an electrical harness. The wiring harness 15 is a low voltage wiring harness (a wiring harness for a low voltage), and it is provided to electrically connect a low voltage battery 16 of the rear portion of the vehicle 7 and an additional device 18 (a device) mounted to the level of a front portion of a vehicle 17. Like the electrical harness 9 of FIG. IA, the electrical harness 15 is laid through the vehicle sub-floor 11 (which is an example, and can be laid through the inside of the vehicle). A sign of
    S64582
    FR JCI-P reference 19 in the electrical harness 15 indicates a harness body. A reference sign 20 indicates a connector.
    [0025]
    As illustrated in Figures IA and IB, the high-voltage electrical harnesses 8 and 9 and the low-voltage electrical harness 15 are placed on the hybrid vehicle 1. The present invention can be applied to either of the electrical harnesses , but it will be described below using the high-voltage electric harness 9 as a representative example. First, a configuration and a structure of the electrical harness 9 will be described.
    <Configuration of the electrical harness 9>
    In Figure IA and Figure 2, the long wiring harness 9 laid through the vehicle subfloor 11 includes a wiring harness body 21 and shielding connectors 14 (external connection means) which are installed on opposite terminals ( bundle terminals 13) of the bundle body 21. The electrical bundle 9 includes collars C for positioning in a predetermined position, and water-tightness elements (for example insulating rings or the like) (not shown).
    <Configuration of the beam body 21>
    In Figures 2 and 4, the beam body 21 includes a long conduction path 22, an outer member 23 which accommodates and protects the conduction path 22, and caps 25 for ends
    JCI-P external which are attached to the ends 24 of the external element 23 by which the conduction paths 22 are drawn.
    <Conduction channel 22>
    In Figure 4, the conduction path 22 includes a conductor 26 having a conductive property, an insulator 27 which covers the conductor 26 and which has an insulating property, and a braid (a shielding element) 28 for performing a shielding function . Namely, as conduction path 22, a sheathless path is adopted (given by way of example). Since the conduction path 22 has no sheath, it goes without saying that the conduction path 22 is all the lighter (since the conduction path 22 is long, it goes without saying that the conduction path 22 can be considerably reduced compared to a known example).
    <Conductor 26>
    In Figure 4, the conductor 26 is formed from copper, a copper alloy, aluminum, or an aluminum alloy in a circular transverse shape. Conductor 2 6 either has a conductor structure formed by twisting strands or has a rod-shaped conductor structure formed in a circular transverse shape (a round shape) (for example, the rod-shaped conductor structure is a conductor structure with a single round core. In this case, the conduction path itself has a rod shape), but either
    JCI-P two conductors can be used. The insulator 2 formed from an insulating resin material is extruded on an external surface of this conductor 26.
    <Insulator 27>
    In Figure 4, the insulator 27 is extruded onto an outer circumferential surface of the conductor 26 using a thermoplastic resin material. The insulator 27 is formed as a sheath having a circular transverse shape. The insulator 27 is formed to a predetermined thickness. As the thermoplastic resin, a quantity of known types can be used. For example, the insulator 27 is suitably selected from polymeric materials such as a polyvinyl chloride resin, a polyethylene resin, a polypropylene resin, and so on.
    <Braid 28>
    In Figures 2 and 4, the braid 28 is provided as an outermost layer of the conduction path 22. This braid 28 is formed in a tubular form by knitting ultrafine strands having a conductive property. The braid 28 is formed in a shape and a size which covers the entire outer circumferential surface thereof from one end to the other of the insulator 27. Without being limited to the braid 28, a sheet of metal or another can be used as a shielding element.
    <External element 23>
    JCI-P
    In Figures 2 to 5B, the outer member 23 is formed in the form of a straight tube (which is straight before use) by molding a resin having an insulating property. The outer member 23 is formed in a form having no slit (in other words, formed in a form without a slit (formed in the form of an unsplit tube)). In addition, the external element 23 is formed in a circular transverse shape according to the shape of the conduction path 22. This external element 23 is different from an external element known in that it has a multilayer structure (part of multilayer structure 37) becoming a characteristic part of the present invention. Hereinafter, the external element 23 will be described in a slightly more specific manner by giving two modes by way of example.
    [0033]
    In Figures 2 and 3, the outer member 23 is formed in the form shown having a mode in which all of it has a flexible tube part 29 (in the case of Figure 2), or a mode in which the whole thereof has the flexible tube parts 29 and the straight tube parts 30 acting as a part for rectilinearly laying the conduction path 22 (in the case of Figure 3). In the case of the outer member 23 of Figure 3, the plurality of flexible tube parts 29 and the plurality of straight tube parts 30 are formed in a direction of an axis of the tube CL. In addition, the flexible tube parts 29 and the straight tube parts 30 are formed to be arranged
    S64582
    FR JCI-P alternately. In the case of FIG. 3, the flexible tube parts 29 are arranged according to a mounting form of a vehicle (a destination shape posed by an electrical harness, or a shape of a mounting target 47 to be described below) . The flexible tube parts 29 are also formed to a length adapted to the shape of the mounting target 47 (are each formed to a length necessary according to the shape of the mounting target 47).
    [0034]
    When the external element 23 has the mode of FIG. 2, the external element 23 has the same appearance as a known corrugated tube, but is different from a known external element in that it has the flexible tube parts 29, each of which has the structure (the multilayer structure part 37) as described below.
    <Parts of flexible tube 29>
    In Figure 4 and Figures 5A and 5B, the flexible tube parts 29 are formed into portions where they can be bent at desired angles in a conditioned state of the wiring harness 9 or at the time of transport, further by laying a track on a vehicle. That is, the flexible tube parts 29 are formed in portions where they can be bent to have a bent shape, and are formed in portions where they can also naturally return to a straight original state (a state at the time of molding the resin).
    [0036]
    JCI-P
    The flexible tube parts 29 are formed as a bellows tube as shown. That is, each of the flexible tube portions 29 is formed in a form in which it has concave bellows portions 32 and convex bellows portions 33 in a circumferential direction when viewed from an external surface 31 thereof. this. The flexible tube part 29 is formed in a form in which the concave bellows parts 32 and the convex bellows parts 33 alternate continuously in the direction of the axis of the tube CL. Furthermore, the flexible tube portion 29 is formed in a form in which it has convex inner surface portions 35 and concave inner surface portions 36 on an inner surface 34 thereof. Furthermore, the flexible tube portion 29 is formed in a form in which it has the multilayer structure portion 37 becoming a multiple layer when viewed in a cross section thereof.
    <Concave bellows parts 32 and convex bellows parts 33>
    In Figures 5A and 5B, the concave bellows portions 32 and the convex bellows portions 33 are formed in a form in which a bottom 38 and a top 39 are continuous by a slope 40 when viewed in the direction of the 'axis of tube CL. The concave bellows portions 32 and the convex bellows portions 33 are formed in a form in which each of the concave bellows portions 32 is located between the high neighbors 39 (in other words
    S64582
    FR JCI-P terms, each of the convex bellows parts 33 is located between the bottoms 38). In the present embodiment, the concave bellows portions 32 and the convex bellows portions 33 are formed to have a dimensional relationship in which a width of the top 39 is wider than an interval between the tall neighbors 39.
    <Convex parts of internal surface 35 and parts 10 concave of internal surface 36>
    In FIGS. 5A and 5B, the convex internal surface parts 35 and the concave internal surface parts 36 are formed according to the shapes of the concave bellows parts 32 and convex bellows parts 33. The convex internal surface parts 35 and the concave inner surface portions 36 are formed in a form in which a bottom 41 and a top 42 are continuous by a slope 43 when viewed in the direction of the axis of the tube CL. The inner surface convex portions 35 and the inner surface concave portions 36 are formed in a form in which each of the inner surface concave portions 36 is located between the high neighbors 42 (in other words, each of the convex surface portions internal 35 is located between the bottoms 41). A tiny curved surface is formed at a portion where the bottom 41 and the slope 43 are continuous and a portion where the top 42 and the slope 43 are continuous (it is preferably formed in a form in which it does not obstruct the insertion of the conduction path 22). [0039]
    JCI-P
    The flexible tube portions 29 are formed so that a thickness from the top 42 of each of the convex inner surface portions 35 to the bottom 38 of each of the concave bellows portions 32 becomes constant. The flexible tube parts 29 are formed so that a thickness from the bottom 41 of each of the concave parts of internal surface 36 to the top 39 of each of the convex bellows parts 33 and a thickness from the slope 43 to the slope 40 also become constant.
    <Part of multilayer structure 37>
    In Figure 4 and Figures 5A and 5B, the multilayer structure part 37 includes the outer layer structure part 44, the inner layer structure part 45, the middle layer structure part 46, and is formed as a structural part of three layers in such a way that these structural parts are brought into close contact without any play or distortion of the layer occurring (the multilayer structural part 37 is not limited to the three layers. For example , the multilayer structure part 37 may be a structure part in which the intermediate layer structure part 46 consists of two layers or three layers and which has four layers or five layers as a whole). This part of multilayer structure 37 is formed in a portion which becomes a thickness of the external element 23. The part of multilayer structure 37 of the present embodiment is formed to the same thickness as a known corrugated tube
    S64582
    FR JCI-P (is not extremely thickened despite the multiple layers, and is also adopted to sufficiently guarantee flexibility or the like).
    <Part of outer layer structure 44>
    In Figure 4 and Figures 5A and 5B, the outer layer structure portion 44 is formed on the outermost layer having the outer surface 31. The outer layer structure portion 44 is formed using a material (a material hard) harder than that of the intermediate layer structure part 46. With regard to the material, a material having a collision resistance function (impact resistance, improved solidity) is appropriately chosen. The material can be a material which can also fulfill a function of, for example, heat dissipation or heat resistance required for the wiring harness 9 in addition to the collision resistance function. In the present embodiment, a resin material such as a polypropylene resin (PP) or a polyamide resin (PA) suitable for vehicle components is adopted.
    <Part of internal layer structure 45>
    In Figure 4 and Figures 5A and 5B, the inner layer structure part 45 is formed on the innermost layer having the inner surface 34. Like the outer layer structure part 44, the inner layer structure part 45 is formed using a harder material (hard material) than that of the middle layer structure part
    JCI-P
    4 6. The material East identical to the material above, and the material of resin such as a resin of polypropylene ( : pp) or a polyamide resin ( PA)
    suitable for vehicle components is adopted.
    [0043]
    As a combination of the material, the outer layer structure portion 44 and the inner layer structure portion 45 are formed together from PP. The outer layer structure portion 44 is formed from PP, and the inner layer structure portion 45 is formed from PA, or conversely from PA and PP, given by way of example . In addition, the inner layer structure part 45 can be adopted as follows. Namely, the inner layer structure part 45 is not formed using the harder material (the hard material) than that of the middle layer structure part 46, and can be formed using a material (a material soft) softer than that of the intermediate layer structure part 46. In this case, it goes without saying that the collision resistance or other function is preferably sufficiently guaranteed by the external layer structure part 44. part of the inner layer structure 45 formed from a soft material is envisaged so that the "surface stop" (will be described below) is relatively facilitated.
    <Part of intermediate layer structure 46>
    In Figure 4 and Figures 5A and 5B, the intermediate layer structure portion 46 is formed at
    64582 FR JCI-P part of a layer (or a plurality of layers) between the part of outer layer structure 44 and the part of inner layer structure 45. The part of intermediate layer structure 46 is formed by using a softer material than that of the outer layer structure part 4 4 and the inner layer structure part 45. With regard to the material, a material which can fulfill a shock absorption function is chosen to appropriately
    In the present embodiment, a soft material such as a polyester-based elastomer, an olefin-based elastomer or a silicone rubber suitable for vehicle components is adopted. If the middle layer structure part 46 is used as part of the plurality of layers, the materials differ between neighboring layers (this also applies in the same way to the inner layer structure part 45).
    [0045]
    As can be seen from the above, in the multilayer structure part 37, the middle layer structure part 46 is formed using a soft material, and the outer layer structure part 44 and the structure part inner layer 45 are formed using hard material (the middle layer structure part 46 and the inner layer structure part 45 can be formed using soft material, and the outer layer structure part 44 can be formed using hard material). Currently, if an extreme example is given, it goes without saying that the function of
    JCI-P impact resistance can be improved more in the first and third layers than in a known example at the time of a vehicle collision, and that the shock absorption function can be exercised in the second layer. If the function of heat dissipation or heat resistance is also maintained at the first and third layers, it goes without saying that the function is further improved, and that a more flexible approach is possible in various environments. use.
    [0046]
    The thickness of each layer in the multilayer structure part 37 is suitably defined in consideration of the above functions. In the present embodiment, the thickness of each layer is defined so that the "surface stop" (surface contact) which will be described below is possible.
    <Operation of the multilayer structure part 37>
    In FIG. 6A, the case in which an external force acts on the external surface 31 of the external element 23 in a state of a point (a state of "punctual stop" (punctual contact); it can also be in a state of a line (linear contact)) is considered. In this case, the deformation of the outer surface 31 and the deformation of the inner surface 34 are in a dissimilar state due to the existence of the inner layer structure part 46 in the multilayer structure part 37 such
    JCI-P as illustrated in Figure 6B. The deformation of the internal surface 34 is attenuated with respect to the deformation of the external surface 31, and therefore the internal surface 34 is also in a state which can come into contact with a nearby surface (in a state of the "surface stop Against it, that is to say a planar contact, at least approximately planar, or surface) of the conduction path 22 (the outermost braid 28). In specific terms, the outer layer structure portion 44 is deformed. As a result, the intermediate layer structure portion 46 is crushed, and shock (an external force) is absorbed to some extent by this crushing. The inner layer structure portion 45 is formed to be more flexible than the outer layer structure portion 44, and therefore the deformation of the outer surface 31 and the deformation of the inner surface 34 are different. As a result, the internal surface 34 is in the state of the "surface stop" against the conduction path 22. At this instant, the damage of the external element 23 is not caused, which does not lead on disconnection or failure of the conduction path 22.
    <Parts of straight tube 30> In Figure 3, the parts of are formed as portions unlike the parts of tube parts of straight tube 30 are like unfolded portions in a straight tube 30 without flexible flexibility 29. The also formed condition condition,
    S64582
    FR JCI-P at the time of transport, or when laying a track (the unfolded portions designate the portions that are not positively bent). The straight tube parts 30 are formed as a long straight tube. An outer circumferential surface (the outer surface 31) of each of these straight tube portions 30 is formed in a smooth regular shape (for example).
    [0049]
    The straight tube parts 30 are formed as rigid portions compared to the flexible tube parts 29. These straight tube parts 30 are formed at a position and at a length according to the mounting shape of the vehicle. Each of the straight tube parts 30 is also formed to have the same multilayer structure part 37 as each of the flexible tube parts 29. The longest of the plurality of straight tube parts 30 is formed as a part which is arranged on the vehicle sub-floor 11 in this embodiment. <Caps 25 for outer ends>
    In Figures 2 and 3, the caps 25 for outer ends are resin components formed, for example, using a resin material having weather resistance or heat resistance, and are mounted on the conduction path 22 and also the external element 23 by which the conduction path 22 is pulled. Even when, for example, grains of sand outside try to get inside the outside element
    JCI-P
    23, the caps 25 for outer ends are formed to be able to prevent them.
    <Production and installation path of the electrical harness 9>
    In the above configuration and structure, the wiring harness 9 is produced as follows (for example see Figure 3). Namely, the electric bundle 9 is produced by inserting the two conduction paths 22 through an opening at one end up to an opening at the other end of the external element 23 which has the part of multilayer structure 37 and whose the whole is formed from a resin in an approximately linear form. The electrical harness 9 is produced by blocking the ends 24 of the external element 23 having the multilayer structure part 37 using the caps 25 for the external ends. In addition, the electrical harness 9 is produced by mounting the collars C, the insulating rings, the teats, etc. at predetermined positions of the external surface of the external element 23 having the multilayer structure part 37. In addition, the electrical harness 9 is produced by supplying the shield connectors 14 to the terminal portions of the conduction channels 22.
    [0052]
    After having been produced as described above, when the flexible tube parts 29 are bent by bending at the predetermined positions and are maintained, the conditioning of the wiring harness 9 is completed. The wiring harness 9 of the state
    S64582
    FR JCI-P conditioned is compact, and is transported in a vehicle assembly field in the compact state without any changes.
    [0053]
    The wiring harness 9 is mounted on the mounting target 47 (the structure) of the vehicle from the long part corresponding to the sub-floor of the vehicle 11 in the assembled configuration of the vehicle Since the longest straight tube part 30 of the 'external element 23 is arranged at the location of the long part corresponding to the sub-floor of the vehicle 11, the electrical harness 9 is mounted with inhibited bending. At this time, the harness 9 is mounted with excellent maneuverability.
    After the long part corresponding to the sub-floor of the vehicle 11 is fixed by the collars C or otherwise, the remaining parts other than the flexible tube parts 29 in the external element 23 are mounted while bending the flexible tube parts 29.
    When a series of methods according to the assembly is completed, the electrical harness 9 is in a state in which it is placed on a desired track.
    [0054]
    As described with reference to Figures IA and
    IB to 6A and 6B, according to one or more embodiments, since the external element 23 for an electric beam is formed in the multilayer structure (the part of multilayer structure 37), the external element 23 can be more difficult to damage than the known example. Namely, since at least the intermediate layer structure part 46
    S64582
    FR JCI-P of the multilayer structure is formed from a soft material, if an impact or the like is designed to be absorbed by the intermediate layer structure part 46 when an external force acts on the external element 23, the flexible tube parts 29 (and the straight tube parts 30) can be hardly damaged. If at least the middle layer structure part 46 is formed from a soft material, the outer layer structure part 44 (and the inner layer structure part 45) of the multilayer structure are formed from a harder material than that of the intermediate layer structure part 46, and thus the collision resistance function (impact resistance, or improved strength) can be maintained. As a result, the flexible tube parts 29 (and the straight tube parts 30) can be hardly damaged. Therefore, an effect capable of providing the hardly damaged outer member 23 is exerted.
    [0055]
    According to one or more embodiments, since the external element 23 is formed in the multilayer structure as described above, the external element 23 can be more difficult to damage than the known example even without adding any new component. Therefore, the effect capable of providing the hardly damaged outer member 23 is exerted.
    [0056]
    JCI-P
    In addition, according to the one or more embodiments, since the outer element 23 is formed in the multilayer structure as described above, the function, for example, of heat dissipation or heat resistance required for wiring harness 9 in addition to the crash resistance function can also be maintained on the outer layer structure portion 44 (and the inner layer structure portion 45). Therefore, an effect capable of providing the outer member 23 which can be used in various environments is exerted.
    [0057]
    According to the one or more embodiments, when an external force acts on the external surface 31 of the external element 23 in a state of a point or a line, the deformation of the external surface 31 and the deformation of the internal surface 34 are formed in the uncompensated state due to the existence of the intermediate layer structure portion 46. Since the deformation of the internal surface 34 is attenuated with respect to the deformation of the external surface 31, the internal surface 34 can be brought into contact with conduction channels 22 in a state of a close surface. Therefore, in addition to the above effects, an effect capable of absorbing the shock against the conduction pathways 22 is exerted, and an effect capable of preventing disconnection or failure is also exerted.
    [0058]
    S64582 FR JCI-P
    It goes without saying that the present invention can be carried out in various ways without changing the essence of the present invention.
    JCI-P
    权利要求:
    Claims (4)
    [1" id="c-fr-0001]
    1. external element (23) for an electric bundle (9) which is formed in the form of a tube so as to receive and protect one or a plurality of conduction paths (22), the external element (23) being characterized by:
    an outer layer structure part (44) which has an outer surface and which is an outermost layer;
    an inner layer structure portion which has an inner surface and which is an innermost layer; and an intermediate layer structure part which is one or a plurality of layers between the part
    outer layer structure (44) and the part of structure inner layer ( 45), in which the part of structure of layer external (44), the part of structure of layer intermediate and the part of structure of layer internal ( 45) join closely to each other, in which the part of structure of layer
    intermediate (46) is made of a softer material than those of the outer layer structure part (44) and the inner layer structure part (45), or the intermediate layer structure part (46) and the inner layer structure portion (45) are made of a softer material than that of the outer layer structure portion (44), and wherein the outer member (23) includes at least a pair of neighboring layers in which the
    S64582 EN JCI-P materials of one layer and the other layer are different in terms of hardness.
    [2" id="c-fr-0002]
    2. external element (23) according to claim 1,
    5 in which the outer member (23) is deformed in a state such that the deformation of the outer surface (31) and the deformation of the inner surface (34) are dissimilar due to the middle layer structure part ( 46), the deformation
    10 of the internal surface (34) is less than the deformation of the external surface (31), and the internal surface (34) is in approximately planar contact with one or more of the conduction paths (22), when an external force is applied to the surface
    15 external (31) to a point or line.
    [3" id="c-fr-0003]
    3. outer element (23) according to claim 1 or 2, wherein the outer element (23) is a
    Flexible tube part (29) having flexibility, or a combination of a straight tube part (30), in which one or the plurality of conduction paths (22) are distributed in a rectilinear manner, and the part of flexible tube (29).
    [4" id="c-fr-0004]
    4. An electrical harness (9) comprising: the external element (23) according to any one of claims 1 to 3; and one or more conduction paths (22)
    30 are housed and protected in the external element (23).
    1/6
    2/6
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    同族专利:
    公开号 | 公开日
    JP2018143019A|2018-09-13|
    JP6590845B2|2019-10-16|
    CN108512151B|2020-07-21|
    CN108512151A|2018-09-07|
    US20180248346A1|2018-08-30|
    DE102018202833A1|2018-08-30|
    US10277017B2|2019-04-30|
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    法律状态:
    2020-02-28| PLFP| Fee payment|Year of fee payment: 3 |
    2020-06-26| PLSC| Search report ready|Effective date: 20200626 |
    2021-02-26| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2017034639A|JP6590845B2|2017-02-27|2017-02-27|Exterior member and wire harness|
    JP2017034639|2017-02-27|
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