JP2010074872A - Feeder system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the performance of absorbing the slack of a wire harness and prevent the interference between a flat harness and outside, in an object which absorbs slack by expanding and shrinking the flat wire harness spirally. <P>SOLUTION: In this feeder system 1, each base end of the flat harness 9 and a spring member 11 shaped like a spiral plate is fixed to a boss part 3, and the boss part is composed of a riser 11a, which projects radially from the boss part, and a winder 10, which connects to the riser and is rolled in two or more layers adjacent to one another on a side that is apart radially from the boss part, and this system is constituted by winding the flat harness 9 into plural layers along the peripheral face of the winder. The boss part 3 is fixed to a case 6, and the spring member 11 and the winder 8 for the flat harness are accommodated in the case. Within the case, the flat harness 9 is wound more on the peripheral side than the spring member 11. A flexible harness sheathing member 7 is fixed to the chip side of the spring member 11, and the harness sheathing member is pulled out from the case 6 together with the flat harness. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a power feeding device that winds a flat harness in a spiral shape along a spring member and absorbs the extra harness length.

  FIG. 7 shows one mode of a conventional power feeding device (see Patent Document 1).

  The power supply device 51 supports a rectangular case 53 that accommodates the flat wire harness 52 in a spiral shape, a disk 54 that supports the spiral portion 52a of the flat harness 52 in the case, and an innermost diameter portion of the spiral portion 52a. A central shaft 55, a plurality of rotating rollers 56 in contact with the outermost diameter portion of the flat harness 52, and each roller 56 is supported by a pin portion 58 along a slit 57 of the case 53 and biased toward the center of the harness. The spring 59 is provided.

  For example, the case 53 is disposed in the vehicle body, one of the flat harnesses 52 is extended and retracted from one mouth 60 of the case 53 and routed toward the door, and the other flat harness 52 is the other of the case 53. It is led out to the vehicle body side while being fixed to the mouth part 61 of the vehicle. For example, when the door is opened, the flat harness 52 is pulled out, and when the door is closed, the flat harness 52 is pulled in by its own restoring force due to the rigidity of the spiral portion 52a to absorb the excess length (slack).

In the case where the spring 59 is not used, only the outermost diameter portion of the flat harness 52 greatly increases in diameter and comes into contact with the inner surface of the case 53. The problem is solved by elastically contacting the flat harness 52 from the outside.
Japanese Patent Laying-Open No. 2008-60089 (FIG. 3)

  However, in the above-described conventional power feeding device 51, when the rigidity of the flat harness 52 is low, the flat harness 52 is expanded in a portion where the roller 56 is not in contact, and the flat harness 52 cannot maintain the spiral shape. There was a concern that the excess length absorption function would be hindered. Further, in order for the harness trajectory from the innermost diameter portion to the outermost diameter portion of the spiral portion 52a to be uniformly expanded depending on the rigidity of the flat harness 52, the outer diameter dimension of the spiral portion 52a is larger than the outer diameter dimension. There was a concern that the surplus length absorption capacity (surplus length absorption length) was low (short). In addition, since the number of parts is large, there is a concern that the structure becomes complicated, expensive, and enlarged. Further, there is a concern that the flat harness 52 led out from the case 53 is easily damaged due to interference with the outside.

  In view of the above points, the present invention expands / contracts a flat wire harness in a spiral shape and absorbs the excess length, thereby improving the harness excess length absorption performance, simplifying the structure and reducing the cost, It is another object of the present invention to provide a power feeding device that can prevent damage due to interference with the outside of a flat harness led to the outside.

  In order to achieve the above object, in the power feeding device according to claim 1 of the present invention, each base end of the flat harness and the spiral plate spring member is fixed to the boss portion, and the spring member is separated from the boss portion. A rising part projecting in the radial direction, and a winding part wound on a plurality of layers adjacent to each other on the side separated from the boss part in the radial direction following the rising part, and the flat harness is It is characterized by being wound in a plurality of layers along the outer peripheral surface of the winding portion.

  With the above-described configuration, the multiple-layer winding portion of the spring member is located at a large distance outward from the boss portion together with the flat harness winding portion at the rising portion of the spring member, thereby increasing the total length of the flat harness winding portion. In addition, the feeding length and winding length (extra length absorption length) of the flat harness are long defined. Further, the flat harness winding portion is spirally arranged between the winding portions of the plurality of layers of the spring member, and the flat harness is isolated by the winding portions of the spring members of the layers of the flat harness. Contact between each other is prevented, and contact frictional resistance between flat harnesses is not generated. As a result, the flat harness can be fed and wound (absorption of excess length) smoothly and reliably with a small force. The flat harness is reliably wound up (absorbed by the extra length) by the restoring force (biasing force) due to the rigidity of the flat harness itself and the biasing force of the spring member.

  The power feeding device according to claim 2 is the power feeding device according to claim 1, wherein the boss portion is fixed to a case, and the spring member and the winding portion of the flat harness are accommodated in the case. .

  By the said structure, the winding part of a spring member and the winding part of a flat harness are safely protected within the case without interference with the outside. The boss portion may be integrated with the case or separate. The power supply device is unitized in the case.

  A power supply device according to a third aspect is the power supply device according to the second aspect, wherein the flat harness is wound more on the outer peripheral side than the spring member in the case.

  With the above configuration, when the flat harness is pulled out from the case, the spring member stays in the case and is prevented from being pulled out.

  A power supply device according to a fourth aspect is the power supply device according to the third aspect, wherein a flexible harness exterior member is fixed to a distal end side of the spring member, and the harness exterior member is externally attached to the flat harness from the case. It is drawn out.

  With the above configuration, the flat harness drawn out from the case is safely protected from the interference with the outside or the opening edge of the case, dust, rainwater, or the like by the harness exterior member.

  According to a fifth aspect of the present invention, in the power feeding device according to the fourth aspect, the harness exterior member is fixed to the spring member by locking means, integral resin molding, adhesion, or the like.

  By the said structure, the front-end | tip part of a spring member and the base end part of a harness exterior member are connected and fixed simply and reliably.

  According to the first aspect of the present invention, it is possible to lengthen the length of the flat harness and the extra length absorption length by centrally arranging the flat harness along the winding portion of the spring member. Moreover, the contact between the winding parts of the flat harness is prevented between the winding parts of the spring member, and the contact friction resistance between the flat harnesses is eliminated, so that the flat harness is smoothly fed and wound (excess length absorption) smoothly and reliably. be able to. Further, by using the spring member to improve the wrapping property (extra length absorbability) of the flat harness and using a single spring member, the structure can be simplified and the cost can be reduced as compared with the conventional structure.

  According to the second aspect of the present invention, the spring member and the flat harness can be safely protected in the case, and the power feeding device can be unitized by the case to improve the mountability to a vehicle or the like.

  According to the third aspect of the present invention, when the flat harness is pulled out from the case, the spring member can be prevented from being pulled out, and deformation or breakage of the spring member can be prevented.

  According to the fourth aspect of the present invention, when the flat harness is pulled out from the case, the outer harness can safely protect the flat harness from interference with the outside, thereby improving the reliability of constant power supply. .

  According to invention of Claim 5, a spring member and a harness exterior member can be connected and fixed easily and reliably, and it can contribute to the simplification and cost reduction of a structure.

  1 to 2 show an embodiment of a power feeding device according to the present invention.

  As shown in FIG. 1, the power supply device 1 includes a synthetic resin case 6 having a substantially circular annular wall 2 and a cylindrical boss portion 3 at the center thereof, and a base end side fixed to the boss portion 3. In the vicinity of the inner peripheral surface 2 a of the wall 2, a flexible flat wire harness 9 in which a spiral winding portion 8 is arranged in a ring shape and a base end side is fixed to the boss portion 3. A strip-shaped spring member 11 spirally disposed along the inner peripheral surface of the winding portion 8 of the flat harness 9 and a harness portion that is attached to the harness portion that is pulled out from the case 6 as shown in FIGS. A flexible harness exterior member 7 is provided.

  The case 6 is composed of a case main body (base portion) 4 and a cover portion 5, and the case main body 4 preferably has an annular wall 2 and a boss portion 3 erected on a horizontal substrate portion (bottom wall) 12. The cover portion 5 is configured to overlap the substrate portion 12 and be fixed to the hole portion 12a by screwing or the like, and the cover portion 5 is erected on the substrate portion 13 and covers the annular wall 2 (half-half). And an annular) covering wall 14. When the boss portion 3 is formed separately, the boss portion 3 is fixed to the substrate portion 12 so as not to rotate in the circumferential direction of the boss.

  The annular wall 2 has a longitudinal slit-shaped mouth portion 15 for leading out a harness, which is configured by cutting out a part of the circumference in the longitudinal direction. The guide walls 16 and 17 for harness guidance having the curved surfaces 16a and 17a are formed integrally with the annular wall 2, and a horizontal bottom wall 18 is formed between the guide walls 16 and 17. An opening 19 is formed in the cover wall 14 of the cover portion 5 to expose the guide walls 16 and 17.

  The boss portion 3 has a first vertical slit 20 formed in a straight line from the outer peripheral surface 3a, and a second vertical slit 21 formed in a substantially L-shaped short cut in parallel. A plurality of vertical ridges 20a for sandwiching the harness are formed in a zigzag shape inside the slit 20 to form a harness fixing portion (indicated by reference numeral 20), and the second slit 21 forms a spring fixing portion. Yes. The flat harness 9 is bent in the 90 ° direction within the slit 20 and led out from the cover 5 to the outside (for example, the vehicle body side). The base end portion of the spring member 11 is bent into an L shape and inserted into the second slit 21 from above.

  The spring member 11 is preferably a strip spring which is made of synthetic resin and is straight or curved in a loop in a free state. In the assembly example of FIG. 1, the spring member 11 is combined with the flat harness 9 (flat harness 9). In the vicinity of the annular wall 2, that is, at a position far away from the boss portion 3 in the radial direction, and is wound around substantially three times.

The spring member 11 is raised outward from the base end (fixed end) on the boss portion side in the tangential direction of the boss portion 3, and the winding portion 10 _{1 of the} innermost layer (innermost circumference or innermost diameter) from the rise portion 11 a. the continued, windings 10 ₁ of the innermost layer is more close to the winding portion 10 ₂ of the intermediate layer, the winding portion 10 ₂ of the intermediate layer close to the winding portion 10 ₃ of the outermost layer (outermost or outermost diameter) Followed. The tip of the spring member 11 is fixedly connected to the proximal end of the exterior member 7 in the winding portion 10 ₃ of the outermost layer.

The flat harness 9 is raised outward from the boss portion 3 in a substantially tangential direction along the rising portion 11a of the spring member 11 (the rising portion is indicated by reference numeral 9a), and the winding portion 10 of the innermost layer of the spring member 11 is formed. winding unit 8 ₁ innermost layer of the flat harness 9 along the outer circumferential surface of ₁ is routed (contact the inner circumferential surface of the winding portion _81), the outer peripheral surface of the winding portion 10 ₂ of the intermediate layer of the spring member 11 The winding portion 8 ₂ of the intermediate layer of the flat harness 9 is routed along (the inner peripheral surface of the winding portion 8 ₂ is in contact) and flat along the outer peripheral surface of the outermost winding portion 10 ₃ of the spring member 11. The outermost winding portion 8 ₃ of the harness 9 is routed (the inner peripheral surface of the winding portion 8 ₃ is in contact), the exterior member 7 is connected to the tip of the spring member 11, and the flat harness 9 is disposed inside the exterior member 7. Is inserted and routed, and the exterior member 7 with the flat harness 9 substantially goes around in the case. It is wound in a range of the inner.

  The winding portion 10 of the spring member 11 is concentrated and disposed near the annular wall 2 by the rising portion 11 a of the spring member 11, and the winding portion 8 of the flat harness 9 is concentrated near the annular wall 2 along the winding portion 10. Have been routed. Thereby, the full length of the winding part 8 of the flat harness 9 is longer than the case where the winding part 8 of the flat harness 9 is arranged in a uniform spiral in the case (when a large gap is generated between the winding parts 8). Is set.

  1, the tip of the spring member 11 is positioned in the vicinity of the opening 15, and the flat harness 9 is extended from the opening 15 by extending around the inside of the exterior member 7 approximately one cycle longer than the spring member 11. It is led out together with the exterior member 7. It is also possible to wind the exterior member 7 in the case more than once in accordance with the length of the flat harness 9 to be drawn (in order to keep the space in the case small, it is preferably within one turn).

The outer peripheral surface of the winding portion 11a of the spring member 11 is in contact with the inner peripheral surface of the winding portion 8 of the flat harness 9, and forms the innermost layer (first layer), the intermediate layer (second layer), and the winding portion 8 of the flat harness 9. outermost each winding unit 8 _{1-8 3} (third layer) is isolated by windings 10 ₁ to 10 ₃ of the spring member 11, the contact between the layers of the flat harness 9 is blocked, thereby the flat wire harness 9 Generation of contact frictional resistance between the flat harnesses at the time of drawing (FIG. 1) and at the time of drawing (FIG. 2) is prevented.

  When the flat harness 9 shown in FIG. 2 is pulled out, the spring member 11 biases the flat harness 9 in the direction in which the flat harness 9 is pulled into the case. The biasing force of the spring member 11 is the biasing force of the flat harness 9, that is, the reduced diameter state of FIG. Is larger than the force to restore the expanded state of FIG. Therefore, the contact frictional resistance between the flat harness 9 and the spring member 11 can be ignored (rather, if there is no contact frictional resistance between the flat harness 9 and the spring member 11, the flat harness 9 is biased by the biasing force of the spring member 11. Cannot be expanded).

It is preferred exterior member 7 attached to the outermost winding portion 8 ₃ of the flat harness 9 in FIG. 1 is a non-contact with the inner peripheral surface 2a of the annular wall 2 of the casing 6, even if both 2,7 contact Even in this case, the flat harness 9 (the exterior member 7) is wound up by both the urging force due to the rigidity of the flat harness 9 and the urging force of the spring member 11 from the state of FIG. The above urging force is exerted, and the flat harness 9 is smoothly wound up as shown in FIG.

2, the distal end of the spring member 11 and the base end of the exterior member 7 are located in the accommodation space of the annular wall 2 before the opening 15 of the case body 4, and the case of the spring member 11 is drawn. Protrusion to the outside is prevented, and only the exterior member 7 is pulled out together with the flat harness 9. Flat harness 9 is reduced in diameter together with the spring member 11, the innermost portion 10 ₁ of the spring member 11 is proximate or in contact with the outer peripheral surface 3a of the boss 3.

  The base end side portion of the exterior member 7 is smoothly bent along one of the curved surfaces 16 a and 17 a of the opening edge of the case body 4. Since the exterior member 7, not the flat harness 9, is in sliding contact with the curved surfaces 16 a and 17 a, wear of the flat harness 9 is prevented.

  As the exterior member 7, for example, a flexible tube made of a synthetic resin and having a small sliding friction, a resin tube, a member integrally formed with the flat harness 9, or the like is preferable. The flat harness 9 is an existing one in which a plurality of parallel conductors such as copper foil are sandwiched between insulating portions such as flexible insulating resin films on the front and back sides.

  3-5 shows each embodiment of the fixing structure of the exterior member 7 and the spring member 11. FIG.

  The structure shown in FIGS. 3A and 3B is an assembly type in which a hook-like portion 11 b is provided on the distal end side of the spring member 11 and a hole 7 a for engaging the hook-like portion 11 b is provided on the proximal end side of the exterior member 11. It is configured. In this example, the bowl-shaped portion 11b is formed by integrally forming a trapezoidal head portion 11d at the tip of a narrow support piece 11c, and the hole portion 7a has a trapezoidal shape with a narrow portion 7b for engaging the support piece 11c. Wide portion 7c. The hook-shaped part 11b and the hole part 7a constitute a locking means. The structure of the locking means is not limited to this.

  The flat harness 9 (FIG. 1) extends from the longitudinal slit-like opening (not shown) of the exterior member 7 to the inside of the tubular exterior member 7 at a position along the spring member 11 beyond the hole 7a of the exterior member 7, for example. Inserted into. Or if the one side wall of the tube-shaped exterior member 7 was shown in FIG. 3, the flat harness 9 will be penetrated by the space between other side walls (not shown).

  4 (a) and 4 (b) is a structure in which the spring member 11 and the exterior member 7 are fixed by integral resin molding. The exterior member 7 is formed in a substantially L-shaped longitudinal section, and has a vertical long side portion. The spring member 11 is fixed to 7d, and the flat harness 9 (FIG. 1) is routed in the space 7h below the upper horizontal short side 7e.

  5 (a) and 5 (b) is a structure in which the spring member 11 and the exterior member 7 are fixed with an adhesive, and the exterior member 7 is formed in a substantially U-shape in vertical section, and is formed on one vertical side. The spring member 11 is bonded and fixed to the inner surface side of the long side portion 7f, and the flat harness 9 (FIG. 1) is inserted and routed in a space 7i between the long side portion 7g on the other side.

  In addition to the structures of FIGS. 3 to 5, for example, the synthetic resin spring member 11 and the exterior member 7 can be fixed to each other by heat welding or the like.

  As shown in FIG. 1, the base end of the exterior member 7 is fixed to the spring member 11, and the distal end of the exterior member 7 is fixed to the harness fixing member 24 on the harness wiring side by a band 22 or tape winding.

  This harness fixing member 24 is merely an example, and curved walls 25 and 26 for harness guidance on both the left and right sides, a harness path 27 formed between the curved walls 25 and 26, and a harness fixing section that follows the harness path 27 28. The harness fixing portion 28 is a portion for bending and arranging the flat harness 9 in the vertical and horizontal directions in the bowl-shaped wall. In the harness path 27, the distal end portion of the exterior member 7 is fastened and fixed to the wall portion 26 a following the one curved wall 26 by the band 22.

  FIG. 6 shows an application example of the power supply device 1. The power supply device 1 is horizontally disposed on the vehicle body 32 of the automobile, the harness fixing member 24 is fixed to the arm 35 of the slide door 33, and the An example in which the flat harness 9 is routed to the sliding door side and power is always supplied is shown.

  In FIG. 6, reference numeral 36 denotes a panel below the step of the lift opening, 34 denotes a guide rail suspended and fixed above the panel 36, 37 denotes a rear wheel, and 38 denotes a rear wheel arch.

  In the fully closed state of the sliding door 33 in FIG. 6, the flat harness 9 moves forward through the curved surface 16 a (FIG. 1) on the front side of the opening 15 of the case 6 against the restoring force of the spring member 11 and the flat harness itself. Pulled out. The flat harness 9 is safely protected by the exterior member 7 from unexpected interference with the outside, rainwater, and the like.

  As the slide door 33 is opened rearward, the slide door 33 is separated outward from the vehicle body 32 along the guide rail 34. When the sliding door 33 is half open (not shown), the harness fixing member 24 approaches the case 6 and the flat harness 9 is pulled into the case by the biasing force of the spring member 11 or the restoring force of the flat harness itself. Long (slack) absorbed.

  When the slide door 33 is fully opened (not shown), the arm 35 is positioned on the rear end side of the guide rail 34, and the flat harness 9 opens the case 6 against the restoring force of the spring member 11 and the flat harness itself. 15 is drawn rearward through a curved surface 17a (FIG. 2) on the rear side (corresponding to FIG. 2). The flat harness 9 is safely protected by the exterior member 7 from unexpected interference with the outside, rainwater, and the like.

  The power feeding device 1 is disposed horizontally on the slide door (power feeding side) 33 instead of the vehicle body (power source side) 32, and the harness fixing member 24 (not limited to the above embodiment) is disposed on the vehicle body side. It is also possible to do. In addition to the sliding door, the present invention can also be applied to power supply to a hinged door, a sliding seat or the like (not shown). These doors and the like are called movable structures, and the vehicle body and the like are called fixed structures.

  When applied to a hinged door, the power feeding device 1 is disposed vertically or horizontally on the door or vehicle body, and the harness fixing member (24) is disposed on the vehicle body or door. When applied to a slide sheet, the power feeding device 1 is disposed vertically on the vehicle floor, and the harness fixing member (24) is disposed on the slide sheet.

  In the power supply device 1 of the above embodiment, the case 6 is used. For example, the case 6 is excluded, and only the substrate portion 12 and the boss portion 3 or the boss portion 3 are fixed (the boss portion 3 is fixed to the assembly side). It is also possible to route the flat harness 9 along the spring member 11 in a plurality of windings close to each other on the side (outer peripheral side) that is greatly separated from the boss portion 3 in the radial direction.

  Moreover, in the said embodiment, although the exterior member 7 was used, it is also possible to exclude the exterior member 7 in the site | part which is not worried about interference with the exterior. In this case, the tip of the spring member 11 only contacts the flat harness 9 and does not need to be fixed. In the case of fixing, for example, a rising piece (not shown) provided on the spring member 11 is passed through the insulating portion of the flat harness 9 and fixed by crimping.

  Moreover, in the said embodiment, although the flat harness 9 and the spring member 11 were fixed to the one boss | hub part 3, it is also possible to fix the flat harness 9 and the spring member 11 to a separate boss | hub part, for example. Further, the boss portion 3 can be formed in a rectangular block shape, a wall shape (plate shape) or the like instead of a columnar shape. However, when the spring member 11 having a reduced diameter is wound around the outer peripheral surface 3a of the boss portion 3, the boss portion 3 preferably has a single cylindrical shape.

  Moreover, in the said embodiment, although the winding part 10 of the spring member 11 was formed in three layers, the winding part 10 may be two layers, four layers, or more. The number of turns of the spring member 11, that is, the number of turns of the flat harness 9 (excluding the exterior member 7) is appropriately set according to the length of the flat harness 9 that is not pulled out and the remaining length absorption length. When the number of windings of the spring member 11 at the time of winding in FIG. 1 is one round, the spring member 11 is pulled out from the case 6 together with the flat harness 9 when the harness is pulled out in FIG. There is a problem in terms of durability and flexibility due to bending with the harness 9.

It is a disassembled perspective view which shows one Embodiment of the electric power feeder which concerns on this invention. It is a perspective view which similarly shows the harness drawer state of an electric power feeder. 1A and 1B show a form of a fixing structure between a flat harness and a spring member, in which FIG. 1A is a rear perspective view and FIG. 1B is a front perspective view. Similarly, (a) is a rear view perspective view and (b) is a front view perspective view showing another form of the fixing structure. The other structure of a fixed structure is also shown, (a) is a rear view perspective view, and (b) is a front view perspective view. It is a perspective view which shows one application example of an electric power feeder. It is a perspective view which shows one form of the conventional electric power feeder.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric power feeder 3 Boss part 6 Case 7 Harness exterior member 7a, 11b Locking means 8 Winding part 9 Flat harness 10 Winding part 11 Spring member 11a Rising part

Claims (5)

  Each base end of the flat harness and the spiral plate-like spring member is fixed to the boss portion, and the spring member is connected to the rising portion protruding radially from the boss portion, the rising portion, and the boss portion. A winding portion wound in a plurality of layers close to each other on a side radially away from the power supply, wherein the flat harness is wound in a plurality of layers along the outer peripheral surface of the winding portion apparatus.   The power feeding device according to claim 1, wherein the boss portion is fixed to a case, and the spring member and the winding portion of the flat harness are accommodated in the case.   The power feeding device according to claim 2, wherein the flat harness is wound more on the outer peripheral side than the spring member in the case.   4. The power feeding device according to claim 3, wherein a flexible harness exterior member is fixed to a distal end side of the spring member, and the harness exterior member is pulled out from the case together with the flat harness.   The power feeding device according to claim 4, wherein the harness exterior member is fixed to the spring member by locking means, integral resin molding, adhesion, or the like.

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