JP4825514B2 - Link-type movable harness wiring structure - Google Patents

Description

  The present invention is a link type that supports, for example, a door of an automobile as a movable body so that it can be opened and closed with a link, and that a power supply wire harness is routed in the link at the extreme end and is raised vertically and twisted when the door is opened and closed. The present invention relates to a harness wiring structure of a movable body.

  FIG. 7 shows an embodiment of a conventional link movable body harness wiring structure (see Patent Document 1).

  This link type movable body is a link type door 62, and the link type door 62 is supported by a vehicle body 70 by a single substantially L-shaped support arm 71 so as to be swingable. The support arm 71 has high rigidity to support the dead weight of the door 62.

  In addition to the support arm 71, a pair of front and rear link arms 65, 66 are provided in parallel. The base ends of the link arms 65, 66 are pivotally supported by the vehicle body 70, and the distal ends of the link arms 65, 66 are provided. Is rotatably supported by a slider 64, and the slider 64 is slidably engaged with a horizontal guide rail 63 on the door side.

  As a harness support structure, a wire harness 68 is routed horizontally from the vehicle body side along the outer surface of the front link arm 66 and fixed to the link arm 66 by a holder 72. One of the wire harnesses 68 is connected to the door side. It is introduced into the door while being bent in a substantially U-shape or J-shape along a caterpillar-shaped exterior member 69 following the slider 64 in the guide rail, and is connected to auxiliary equipment and electrical components in the door, and is connected to the wire harness 68. The other 68a is routed while being slightly bent toward the vehicle body 70 and is connected to the power source. The right side in FIG. 7 is the vehicle front side.

  Examples of the auxiliary machine include a power window motor, a door lock unit, a speaker, a door opening / closing drive device, and the like. Link arms 65, 66, a guide rail 63, a slider 64, and an exterior member 69 are employed as a mechanism for absorbing the opening / closing stroke of the door 62 in order to constantly supply power to these auxiliary machines. The exterior member 69 is received by a storage case 67 below the guide rail 63.

  When the door 62 is fully closed, the support arm 71 and the link arms 65 and 66 extend forward, the slider 64 moves to the front end side of the guide rail 63, and one of the wire harnesses 68 is accommodated by the bending operation of the exterior member 69. 67. The wire harness 68 rotates together with the link arm 66.

When the door 62 is fully opened, the link arms 65 and 66 maintain the door half-open state of FIG. 7, the support arm 71 extends rearward, the slider 64 moves to the rear end side of the guide rail 63, and the wire harness 68 is externally mounted. It is pulled out backward together with the member 69.
Japanese Patent Application Laid-Open No. 10-175483 (FIGS. 5 and 9)

  However, in the conventional link movable body harness wiring structure, since the pair of link arms 65 and 66 are required in addition to the support arm 71, the structure is complicated and the cost is increased. was there. Further, since the guide rail 63, the slider 64, the caterpillar type exterior member 69, and the like are required to absorb the extra length of the wire harness 68, this also causes a problem that the structure is complicated and the cost is increased. It was. Further, when the door 62 is opened and closed, the extra length portion 68a of the wire harness 68 is loosened and bent or pulled on the base end side 66a (vehicle body 70 side) of the link arm 66. In addition to absorbing excess length, care must be taken not to allow the wire harness 68 to bite into the link arm 66 or the like on the vehicle body side (because there are management points on both the door side and the vehicle body side). In addition, the design and management for ensuring the constant power supply are difficult, and a space for bending the extra length portion 68a of the wire harness 68 is required, so that the degree of freedom of arrangement of the parts on the vehicle body side is increased. If the wire harness 68 is likely to be damaged due to the problem that it may be limited or the harness part in the exterior member 69 or the extra length part 68a on the vehicle body side is bent. Cormorants there was a concern. Further, since the wiring harness 68 is routed along the link arm 66 so as to be exposed, there is a problem that the wiring harness 68 may interfere with the outside or be adversely affected by rainwater or the like.

  Even when doors other than automobile doors or other movable bodies are used as the movable body, there is a concern that the same problem as described above may occur when the harness wiring structure of the link movable body is applied. .

  In view of the above-described points, the present invention reduces the structure of the wire harness by reducing the excess length of the wire harness and reducing the bending durability, while simplifying the structure and reducing the cost, and reducing the management points of the wire harness. It is an object of the present invention to provide a harness wiring structure of a link type movable body that can be prevented.

In order to achieve the above object, the link movable body harness routing structure according to claim 1 of the present invention is a hollow cylindrical first structure in which one end portion of a horizontal link arm is perpendicular to the link arm. rotatably connected to the movable member in the axial section, the other end of the link arm is rotatably connected to the fixed body in the second axis of the vertical hollow tubular relative to the link arm, the A movable body is rotatably supported on the fixed body by the link arm, a horizontal portion of the wire harness is routed along the link arm, and a vertical first rising portion following one of the horizontal portions is provided. A second vertical start up that is slightly smaller than the inner diameter of the first shaft portion, is raised through the center of the first shaft portion, is routed to the movable body, and follows the other of the horizontal portions. The portion is slightly smaller than the inner diameter of the second shaft portion and is raised through the center of the second shaft portion. It is routed to the fixed body, wherein the rising portion said first and second at the time of opening and closing the movable body is twisted in opposite directions in the circumferential direction at the same time.

With the above structure, the center of the shaft portion and the center of the link arm in the raised portion of the wire harness match, with the swing of the link arm when the movable body opening and closing, without bending force to the raised portion acts The rising portion is uniformly twisted in the circumferential direction to smoothly and reliably absorb the rotational displacement of the link arm. The rising portion is twisted in the forward direction by the opening operation of the movable body, and twisted in the reverse direction by the closing operation of the movable body, so that the twist is released. The twisting operation of the rising portion has less burden on the wire harness than the conventional bending operation of the extra length portion, and improves the durability. Each rising part is twisted in the opposite direction to cancel the twist of the entire wire harness. The wire harness is routed at the extreme end distance on a straight line connecting both shaft portions of the link arm. Wire harness may also be inserted in the link arm, but it may also be laid along the outer wall surface of the link arm.
When the movable body is opened and closed, the rising portion is smoothly and reliably twisted without being bent while being held in the shaft portion without being displaced in the radial direction. When the wire harness is routed outside the link arm, for example, along the lower wall, the rising portion is led out of the link arm through the shaft portion from the lower wall. When the wire harness is inserted into the link arm, the wire harness is inserted directly into the shaft portion from the inner space of the link arm.

  The harness movable structure of the link type movable body according to claim 2 is characterized in that, in the harness movable structure of the link type movable body according to claim 1, the wire harness is inserted into the hollow link arm. To do.

With the above configuration, the wire harness is safely protected from interference with the outside, rainwater, and the like within the link arm. Link arm Ru also serves as a harness protector.

The harness wiring structure of the link type movable body according to claim 3 is the harness wiring structure of the link type movable body according to claim 1 or 2 , wherein a high rigidity harness protector is used instead of the link arm. Features.

  With the above configuration, the wire harness is assembled in advance in the harness protector, and both ends of the harness protector assembly are pivotally connected to the link mechanism (movable body side and fixed body side link bracket) at the shaft portion. Is done. Even when a link arm is used instead of a harness protector, it is preferable to insert a wire harness in advance from the viewpoint of assembly of the link arm to the movable body side and the fixed body side.

The harness wiring structure of the link type movable body according to claim 4 is the harness wiring structure of the link type movable body according to any one of claims 1 to 3 , wherein the movable body is a door, and the fixed body is It is a vehicle body.

According to the above configuration, in the harness wiring structure of the link type movable body described in any one of claims 1 to 3 , the same effect as the above is obtained by replacing the movable body with a door and the fixed body with a vehicle body. Is played.

According to the first aspect of the present invention, the center of each shaft portion on both ends of the link arm and the center of the rising portion of the wire harness coincide with each other so that each of the movable body side and the fixed body side can be The riser is twisted uniformly in the circumferential direction without receiving bending force, and the rotation of the link arm is absorbed smoothly and reliably, eliminating the need for a conventional harness surplus length and bending the surplus length. The problem of lowering durability and securing bending space is solved, harness wiring is performed in a space-saving manner, and the link arm serves as a support for the movable body and the wiring route for the harness, simplifying the structure・ Cost reduction. In addition, since the two raised portions are twisted in the opposite directions, the twist of the wire harness is offset and the durability is improved. Further, since the wire harness is routed at the extreme end distance between the movable body and the fixed body, the wire harness is shortened and the cost is reduced.
In addition, since the rising portion of the wire harness is stably held in the shaft portion without any positional displacement in the radial direction, the torsional operation of the rising portion is performed stably and reliably, and the durability of the rising portion is improved. Power supply reliability is improved.

  According to the second aspect of the present invention, since the wire harness is safely protected in the link arm, the reliability of power feeding is improved, and the harness protector is not required, thereby simplifying the structure and reducing the cost. .

According to invention of Claim 3, the assembly | attachment property of the harness protector to the movable body side or the fixed body side improves by having made the harness protector maker insert the wire harness in the harness protector beforehand.

According to the fourth aspect of the present invention, the extra length of the wire harness when the door is opened and closed can be reliably absorbed in a narrow space of the vehicle, and space saving of the harness wiring portion of the vehicle is achieved.

  FIG. 1 shows a schematic example of an embodiment of a harness wiring structure for a link movable body according to the present invention.

  The link movable body is a link door 1 of an automobile, and the link door (movable body) 1 is supported by a vehicle body (fixed body) 4 by a hollow link arm 2 so as to be swingable (rotatable). . The link arm 2 is formed of a metal material such as iron or aluminum alloy with high strength and rigidity. It is to be noted that another link arm (not shown) is provided facing the upper side of the link arm 2, another link arm (not shown) is provided in front of or behind the link arm 2, or the link arm 2. Alternatively, the door 1 can be supported by a guide rail (not shown).

Link end of the arm 2 is rotatably supported in a metal link bracket 5 of the door-side with a metal shank _71, the base end portion of the link arm 2 vehicle body side of the metal link bracket 6 and it is rotatably supported by a metal shank 7 _2. Both the link brackets 5 and 6 are arranged in parallel, and the link arm 2 and the pair of left and right link brackets 5 and 6 constitute a link mechanism. The link bracket 6 on the vehicle body side is disposed inside the rocker panel 8. When a pair of front and rear link arms are used, the pair of link arms are connected by a pair of left and right long link brackets.

  In FIG. 1, the left side is the vehicle front side, and the right side is the vehicle rear side. In FIG. 1, the solid line indicates the fully open state of the door 1, and the chain line indicates the fully closed state of the door 1. When the door 1 is fully opened, the link arm 2 protrudes outwardly from the vehicle body 4 and extends obliquely rearward, and an opening 9 for getting on and off is formed on the front side of the door 1, and a crossover space 10 is formed between the door 1 and the vehicle body 4. When the door 1 is fully closed, the link arm 2 falls to the front side, and the door 1 and the vehicle body 4 are in close contact with each other. When the door 1 is opened and closed, the link arm 2 swings and the link brackets 5 and 6 are always positioned in parallel.

A wire harness 14 is inserted and routed in the inner space of the link arm 2. The wire harness 14 is routed horizontally along the link arm 2 and raised vertically from the link arm 2 through the inside of the vertical shaft portions 7 ₁ and 7 ₂ while being vertically raised at both ends of the link arm 2. Has been derived.

That is, the raised portion 14a ₁ of the door side of the harness portion 14a is while penetrating the upper wall of the link bracket 5 through the shaft portion ₇₁ of the tubular, is introduced into the synthetic resin protector 16 of the door side Yes. In the protector 16, the upper end side of the rising portion 14 a ₁ is bent in the horizontal direction, is raised again vertically, and is routed in the door 1 through a through-less grommet 17 made of synthetic rubber.

Shank 7 ₁ as an enlarged view of one example in a circle in FIG. 1, has a notch hole 7a of the harness inserted through the lower half side, e.g., the wire harness 14 of the link arm 2 holes and the link in a state where the upward derived through the hole of the bracket 5, by inserting the shaft portion ₇₁ extrapolated to the upper harness portion downwardly Ryoana portion, the link arm 2 and the link bracket 5 the axial while being rotatably connected in part 7 _1, the horizontal portion 14c of the wire harness 14 from the notch hole 7a it is derived without slack, raised portion 14a ₁ from the shaft portion ₇₁ of the upper opening 7b is derived without slack.

The outer diameter of the raised portion 14a ₁ is slightly smaller set than the inner diameter of the inner hole of the shaft portion ₇₁ (to substitute by reference numeral 7b), raised portion 14a ₁ is freely twist within the bore in the circumferential direction Yes. For example, the upper end of the shaft portion ₇₁ is provided integrally with the flange portion 7d for stopping, the lower end of the shaft portion ₇₁ extends through a hole of the lower wall of the link bracket 5 made of metal C-ring or the like (FIG. (Not shown) and is prevented from coming off from the link bracket 5.

While through the upper wall of the upper wall and the rocker panel 8 of the harness parts 14b rising portion 14b ₁ of the vehicle body-side cylindrical shank 7 ₂ through the link bracket 6, preferably not shown in the vehicle body side It is routed on the vehicle body side as a horizontal harness portion 14b ₂ through a protector made of synthetic resin.

Shank 7 _2, like the shaft portion ₇₁ of the door side, has a notch hole 7a of the harness inserted through the lower half side, e.g., the hole portion of the wire harness 14 link arm 2 and the hole of the link bracket 6 bets in a state of being upwardly derived via, by inserting the shank 7 ₂ extrapolated to the upper harness portion downwardly Ryoana part, times in the link arm 2 and the link bracket 6 the axial section 7 ₂ while being movably connected, the horizontal portion 14c of the wire harness 14 from the notch hole 7a is derived without slack, raised portion 14b ₁ from the shaft portion 7 _{and second} upper openings 7b is derived without slack.

The outer diameter of the rising portion 14b ₁ is slightly smaller set than the inner diameter of the inner hole of the shaft portion 7 ₂ (substitute by reference numeral 7b), raised portion 14b ₁ is freely twist within the bore in the circumferential direction Yes. For example the flange portion 7d for stopping the upper end of the shank 7 ₂ (FIG. 2) is integrally provided on the lower end side of the shank 7 ₂ metal through the hole of the lower wall of the link bracket 6 C It is locked by a ring 7e (FIG. 2) and is prevented from coming off from the link bracket 6.

  As shown in FIG. 2 as an example of the wiring form of the harness portion 14b on the vehicle body side, a link bracket 6 having a U-shaped cross section is located outside the end of the link arm 2, and the link bracket 6 has a U-shaped cross section. It is arrange | positioned inside the rocker panel 8 of a shape.

The vertical rising portion 14b ₁ of the harness portion 14b is routed into the vehicle body as a horizontal harness portion 14b ₂ through the hole portion 8d of the rocker panel 8 and the hole portion 33a of the spacer plate 33 thereon.

A scuff plate (stepping plate) 34 is disposed on the spacer plate 33, and the flange portion 34 a of the scuff plate 34 is engaged with the flange portion 8 c of the rocker panel 8, so that the horizontal harness portion 14 b ₂ Arranged between the gaps.

As described above, the wire harness 14 is routed inside the link arm 2, and the harness portions 14 a and 14 b stand concentrically with the shaft portions 7 ₁ and 7 ₂ at the ends of the link arm 2 on the door side and the vehicle body side. The raised portions 14a ₁ and 14b ₁ are arranged (the centers of the shaft portions 7 ₁ and 7 _{2 and} the centers of the raised portions 14a ₁ and 14b ₁ are matched), thereby allowing the link arm 2 to swing when the door is opened and closed. Along with this, both rising portions 14a ₁ and 14b ₁ perform torsional motion in the circumferential direction, and smoothly absorb the rotational displacement of the link arm 2.

The one and the other harness portions 14a and 14b of the link arm 2 absorb the rotation of the link arm 2 only by the twisting operation of the rising portions 14a ₁ and 14b ₁ , and no extra harness portion is generated. Thus, the enlargement of the space on the door side and the vehicle body side and the deterioration of the durability of the wire harness due to the bending operation of the wire harness are reliably prevented.

In addition, since the centers of the shaft portions 7 ₁ and 7 _{2 and} the centers of the rising portions 14a ₁ and 14b ₁ are made to coincide, the horizontal harness portion in the link arm is not subjected to any tension or compression when the door is opened or closed. Therefore, the horizontal harness portion 14c can be routed in a straight line in the link arm, and the wire harness 14 connecting the vehicle body 4 and the door 1 is routed at the extreme end distance. 14 can be shortened.

  Further, by inserting the wire harness 14 into the rectangular tubular link arm, a protector for protecting the harness along the link arm 14 becomes unnecessary, and the number of parts and the part cost can be reduced.

  In the above embodiment, the shape and the like of the door-side protector 16 and the vehicle body-side protector (not shown) are appropriately set as necessary.

3, wiring using a hollow harness protector 11 having high rigidity in place of the link arm 2, to perform the support of the weight of the door 1 with the protector 11 (Fig. 1), the wire harness 14 along the protector 11 This embodiment is shown. The same components as those in the previous example are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 3 is shown reversed from FIG.

The harness protector 11 is preferably formed of a fiber material such as metal, glass fiber, or carbon fiber. The wire harness 14 is routed horizontally in the interior space of the protector 11 (the horizontal portion is indicated by reference numeral 14c), and is vertically raised at both ends of the protector 11 (the rising portions are indicated by reference numerals 14a ₁ and 14b ₁ ). ) Through the cylindrical shaft portions 7 ₁ and 7 ₂ of the protector 11 and led out to the upper side of the link brackets 5 and 6.

The protector 11 includes a rectangular cylindrical horizontal portion 22 and a substantially L-shaped hollow block-shaped end portion 25 joined to both ends of the horizontal portion 22. As an example, each end portion 25 includes each shaft portion. 7 ₁ , 7 ₂ has a hole 25 a to be inserted, and each shaft 7 ₁ , 7 ₂ has a notch 7 a for inserting a harness similar to the previous example, and is inserted into each end 25 from above, not shown. It is preferably fixed to the end portion by a flange portion or a C-ring, and fixed to each link bracket 5 or 6 by another flange portion (reference numeral 7d in FIG. 2) or a C-ring or the like (reference numeral 7e in FIG. 2) .

The shaft portions 7 ₁ and 7 ₂ can be provided integrally with each end portion 25, and each end portion 25 can be formed integrally with the horizontal portion 22. It is also possible to form the same height as the horizontal portion 22. The shape and molding structure of the protector 11 and the connection structure with the shaft portions 7 ₁ and 7 ₂ can be appropriately set as necessary. Further, when a pair of parallel link arms are used, it is possible to replace one of the link arms with the protector 11 or replace the link arms on both sides with the protectors 11.

The wire harness 14 is routed inside the protector 11, and the raised portions 14a ₁ and 14b ₁ of the harness portions 14a and 14b are concentric with the shaft portions 7 ₁ and 7 ₂ at the ends of the protector 11 on the door side and the vehicle body side. 1 is arranged (the centers of the shaft portions 7 ₁ and 7 _{2 and} the centers of the rising portions 14a ₁ and 14b ₁ are made to coincide), the same effect as the example of FIG.

  FIGS. 4-6 shows the detailed example of one Embodiment of the harness wiring structure of the link type movable body which concerns on this invention. This detailed example is basically the same as the schematic example of FIG. 1, and the same components as those in FIG. 1 are denoted by the same reference numerals and detailed description thereof is omitted.

  FIG. 4 is a perspective view of the door fully opened, with the front and rear reversed from FIG. 1, and FIG. 5 is a plan view of the door fully opened, and the rocker panel 8 of the vehicle body (fixed body) 4 is substantially in cross-section. The inner panel 1a (partially shown) of the door (movable body) 1 is vertically raised from the door bottom 1b.

One harness portion 14 a of the wire harness 14 is introduced into the protector 16 on the door 1 side while being raised along the shaft portion 7 ₁ on the proximal end side of the link arm 2, and the raised portion 14 a ₁ is inserted into the shaft portion 7. circumferential torsional freely at inside within _one and the protector 16, the harness portion that follows the rising portion 14a ₁ is laid along the inner panel 1a from the protector 16. As shown in FIG. 5, the rising portion 14 a ₁ is located in the shaft portion 7 ₁ of the link arm 2. A door trim (not shown) is attached to the inner panel 1a, and the protector 16 is positioned between the inner panel 1 and the door trim.

The other harness portion 4b of the wire harness 14 is raised up along the shaft portion 7 ₂ on the distal end side of the link arm 2 so as to be freely twisted in the circumferential direction (the raised portion is indicated by reference numeral 14b ₁ ). through a hole 8d of the walls 8a, it is routed from the upper side of the rocker panel 8 on the vehicle body 4 side as the horizontal harness portion 14b _2. The other harness portion 4b is preferably covered and protected with a protector (not shown) made of synthetic resin in the same manner as the one harness portion 4a.

  The link arm 2 is swingably connected by a pair of left and right U-shaped link brackets 5 and 6, one link bracket 5 is fixed to the door bottom 1 b, and the other link bracket 6 is a groove portion of the rocker panel 8. 27 is fixed.

The link arm 2 is formed of a highly rigid metal material in the shape of a rectangular cylinder, and plays a role of both supporting the door 1 to the vehicle body 4 and routing the wire harness 14 from the vehicle body 4 to the door 1. . The link arm 2 is rotatably supported by the link brackets 5 and 6 by shaft portions 7 ₁ and 7 ₂ . As an example, the opening / closing angle of the link arm 2 when the door is opened / closed is about 120 °.

The door-side protector 47 includes a protector main body 49 configured by a substantially L-shaped hook-shaped portion, and a plate-shaped cover 53 that closes the harness insertion opening of the protector main body 49 and is locked by a locking means. Is done. The protector main body 49 includes a vertical portion 54 and an intermediate horizontal portion (horizontal protector portion) 16, and the upper vertical portion 54 continues to the horizontal portion 16 at an inclined portion.

  The wire harness 14 is fixed to the fixing plate 57 following the upper vertical portion 54 by tape winding or the like, and is waterproofed by an elastic through-less grommet 17 (FIG. 1) fitted in the groove portion of the door inner panel 1a. The cover 53 closes the opening of the horizontal portion 16 and the upper vertical portion 54 and holds the wire harness 14 in the protector main body 49. The protector 47 is a penetration-less protector that is surface-mounted on the door inner panel 1a. The horizontal portion 16 of the protector 47 is disposed on the upper wall surface of the link bracket 5 and is fixed to the door inner panel 1a with a locking clip 58 (FIG. 5) or the like.

The shape and the like of the protector 47 are appropriately set according to the shape and the like of the door inner panel 1a. The shape or the like of a protector (not shown) that covers the rising portion 14b ₁ and the horizontal portion 14b ₂ of the harness portion 14b on the vehicle body 4 side is also set as appropriate, as with the door-side protector 47.

Horizontal protector as the vehicle body side of the protector (not shown), for example, to cover the vertical protector portion covering the rising portion 14b ₁ of the harness portion 14b, and horizontal harness portion 14b ₂ that follows the rising portion 14b ₁ What was comprised in the substantially L shape by the part is preferable. The protector is preferably fixed to, for example, the rocker panel 8 with a locking clip or the like, and the vertical protector portion preferably passes through the hole 8d of the rocker panel 8 or the hole 33a of the spacer plate 33 in FIG. The protector can be divided into vertical and horizontal protector parts. The same applies to the door-side protector 47.

When the door of FIG. 5 is fully opened, the wire harness 14 is routed straight and obliquely forward along the link arm 2. By closing the door 1 as shown in FIG. 6 from the door fully open in Figure 5 forward, while being fixed at one harness portion 14a door side of the protector 47, the raised portion 14a ₁ in the circumferential direction in the shank 7 ₁ The wire harness 14 is located obliquely rearward along the link arm 2 by twisting and absorbing the rotation of the link arm 2. The rising portion 14a ₁ is twisted backward in the counterclockwise direction in FIG.

As with the other harness portion 14b is one of the harness portion 14a of the vehicle body side, the inclination of the front of the link arm 2 (closed) by raising part 14b ₁ standing with the operation twisted in the circumferential direction, the link arm Smoothly absorbs the rotation of 2. Raised portion 14b ₁ is twisted forward counterclockwise in FIG. The rising portions 14a ₁ and 14b ₁ are located inside the left and right shaft portions 7 ₁ and 7 ₂ of the same link arm 2, and the rising portions 14a ₁ and 14b ₁ and the shaft portions 7 ₁ and 7 ₂ Since the centers of the two are coincident with each other, the pivot fulcrum of the link arm 2 and the pivot fulcrum of the wire harness 14 coincide with each other, and the bending action of the wire harness 14 does not occur (only the twisting operation in the circumferential direction is sufficient). . In addition, since both the rising portions 14a ₁ and 14b ₁ are twisted in opposite directions, the torsional force acting on the wire harness 14 is canceled, and the torsional load on the wire harness 14 is reduced.

In the period from the door fully closed state in FIG. 6 to the door fully open state in FIG. 5, the rising portions 14a ₁ and 14b _{1 of} both the harness portions 14a and 14b are twisted in the direction opposite to that in FIG. The rotation of the link arm 2 is smoothly absorbed. Also in this process, the two rising portions 14a ₁ and 14b ₁ are twisted in the opposite directions, so that the torsional force acting on the wire harness 14 is offset, and the torsional load on the wire harness 14 is reduced.

Since the rising portions 14a ₁ and 14b ₁ of both the harness portions 14a and 14b are twisted in the circumferential direction within the shaft portions 7 ₁ and 7 ₂ , the extra length of the wire harness 14 becomes unnecessary, and the extra length management point Disappears, the design and management to ensure the constant power supply is facilitated, the reliability of the constant power supply is improved, and the space for bending the extra length is not required, the door side In addition, it is possible to save the space of the harness wiring portion on the vehicle body side and to prevent the bending durability of the wire harness 14 from being lowered due to repeated bending of the extra length portion. It goes without saying that the wire harness 14 is safely protected from interference with the outside, rainwater, etc. in the link arm 2.

In the above-described embodiment, the wire harness 14 is inserted into the shaft portions 7 ₁ and 7 ₂ of the link arm 2, but the wire harness 14 is not inserted into the shaft portions 7 ₁ and 7 ₂ , for example, the shaft It is also possible to raise the rising portions 14a ₁ and 14b ₁ of the wire harness 14 in the vicinity of the portions 7 ₁ and 7 ₂ . In this case, the wire harness 14 is raised while being led out from the openings at both ends of the link arm 2 and routed to the door side or the vehicle body side. Raised portion 14a _1, 14b ₁ are preferably arranged in the vicinity of the shaft portion _71, 7 ₂ on an extended line connecting the both axes 7 _1, 7 _2. However, in this case, since the centers of the rising portions 14a ₁ and 14b ₁ and the shaft portions 7 ₁ and 7 ₂ are slightly shifted, the rising portions 14a ₁ and 14b ₁ are slightly bent as the link arm 2 swings. However, it cannot be denied that it is twisted. If the shaft portion _71, 7 ₂ not inserted a wire harness 14, the shaft portion _71, 7 ₂ can increase the strength as a solid rather than tubular (hollow).

Moreover, in the said embodiment, although the wire harness 14 was penetrated in the link arm 2 or the protector 11 replaced with it, for example, the wire harness 14 is arrange | positioned to the upper wall 2a (FIG. 4) of the link arm 2, and link arm it is also possible to arrange on the shaft portion _71, 7 _second axis both harness portion 14a, a raised portion 14a _1, 14b ₁ and 14b at the second end portions.

Further, either one of the harness portion of the wire harness 14 (14a) is inserted the shank ₍₇₁₎ within the shaft portion and the other of the harness portions (14b) in the axial outer (7 ₂₎ and the same axis It is also possible to start up on the line or in the vicinity of the shaft portion (7 ₂ ).

In addition, the wire harness 14 was routed along the lower wall (bottom wall) of the link arm 2 not on the inner side of the link arm 2 (3) but on the outer side of the link arm 2 (3). it is also possible to rising portion 14a _1, 14b ₁ of the shaft portion _71, 7 ₂ of the shaft portion ₇₁ is passed through the inside, 7 ₂ concentric.

Further, in the embodiment using the harness protector 11 of FIG. 3, the harness protector 11 is extended only by the rectangular cylindrical horizontal portion 22 and led out to the outside while being vertically raised from the openings at both ends of the horizontal portion 22. It is also possible to insert the raised portions 14a ₁ and 14b ₁ into the cylindrical shaft portions 7 ₁ and 7 ₂ or to arrange them in the vicinity of the shaft portions 7 ₁ and 7 ₂ . Since the harness protector 11 protects the wire harness 14, it is essential to insert the wire harness 14 into the horizontal portion 22.

In the above-described embodiment, the shaft portion _71, 7 raised portion 14a ₁ of the _second center and the wire harness 14 has been described with the center of 14b ₁ as to coincide, for example, cylindrical shank 7 ₁ , 7 if it is significantly larger set than ₂ of the outer diameter of the raised portion 14a _1, 14b ₁ inner diameter Standing up portion 14a ₁ standing on the shaft portion _71, 7 closer to the center rather than _two full center during actual use , 14b ₁ can also be arranged, and this also provides substantially the same effect as the arrangement at the centers of the shaft portions 7 ₁ , 7 ₂ .

  In addition to the link doors of automobiles as link-type movable bodies, the link-type movable body harness is arranged on link-type doors such as trains and locomotives, link-type doors and link-type covers of processing machines and inspection devices, etc. It is also possible to apply a cable structure. In this case, a vehicle body such as a train or a locomotive, a machine body of a processing machine, an apparatus body of an inspection apparatus, or the like is referred to as a fixed body.

It is a perspective view showing an example of an outline of one embodiment of a harness wiring structure of a link type movable object concerning the present invention. It is a disassembled perspective view which shows one form of the wiring structure of the harness part by the side of a stationary body. It is a disassembled perspective view which shows other embodiment of the harness wiring structure of the link type movable body which concerns on this invention. It is a perspective view of the door full open state which shows the detailed example of one Embodiment of the harness wiring structure of the link type movable body which concerns on this invention. It is a top view of the movable body full open state which shows the harness wiring structure of the same link type movable body. It is a top view of the movable body fully closed state which shows the harness wiring structure of the same link type movable body. It is a perspective view which shows an example of the harness wiring structure of the conventional link type movable body.

Explanation of symbols

1 Door (movable body)
2 Link arm 4 Vehicle body (fixed body)
7 ₁ and 7 ₂ shaft portion 11 harness protector 14 wire harness 14a ₁ and 14b ₁ rising portion

Claims (4)

One end portion of the horizontal link arm is rotatably connected to the movable body in the first shank of the vertical hollow cylinder relative to the link arm, the other end of the link arm relative to the link arm rotatably connected to the fixed body in a second shaft portion of the vertical hollow cylinder, said movable member is rotatably supported to the stationary member in the link arm, the wire harness along said link arm A horizontal portion is routed, and a vertical first rising portion following one of the horizontal portions is raised through the center of the first shaft portion with a slightly smaller diameter than the inner diameter of the first shaft portion. The vertical second rising portion following the other of the horizontal portions is routed through the center of the second shaft portion with a slightly smaller diameter than the inner diameter of the second shaft portion. The first and second raised portions are simultaneously connected in the circumferential direction when the movable body is opened and closed. Harness installation structure of the link-type movable body, characterized in that it is twisted in the opposite direction.   The link wiring body harness wiring structure according to claim 1, wherein the wire harness is inserted into the hollow link arm.   The harness wiring structure for a link type movable body according to claim 1 or 2, wherein a highly rigid harness protector is used instead of the link arm.   The link movable body harness routing structure according to any one of claims 1 to 3, wherein the movable body is a door, and the fixed body is a vehicle body.

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