JP4914779B2 - Abnormal noise prevention structure for power supply equipment - Google Patents

Description

  The present invention relates to a noise prevention structure for a power feeding device that is mounted on a slide door of an automobile, for example, so as to always supply power and prevents noise accompanying opening and closing of the slide door.

  3 to 5 show one form of a conventional noise prevention structure for a power feeding device (see, for example, Patent Documents 1 and 2).

  This power supply device is disposed vertically on the slide door 41 of the automobile, and is made of a synthetic resin protector 50 that houses the wire harness 43 in a bendable manner, and a metal made to urge the wire harness 43 upward in the protector. A sheet-like cushioning member 56 that prevents interference noise with the wire harness 43 is fixed to the inner surface of the vertical wall portion 53 of the protector 50.

  The protector 50 includes a protector base 51 and a protector cover 52, and a buffer member 56 such as a rubber material is provided on each wall portion 53 of the protector base 51 and the protector cover 52. The buffer member 56 is disposed at a position where it comes into contact with the wire harness 43 when the slide door 41 is fully closed in FIG. 3, so that the wire harness 43 does not interfere with the protector 50 due to vibration while the vehicle is running so that no abnormal noise is generated. ing. The protector base 51 and the protector cover 52 are locked and fixed to each other after the wire harness 43, the leaf spring 44, and the buffer member 56 are assembled.

  The leaf spring 44 is fixed to the lower part of the front end of the protector 50 together with the wire harness 43 (a fixing portion is denoted by reference numeral 59), and a synthetic resin cap 49 is fixed to the tip of the leaf spring 44. It is slidably supported.

  The wire harness 43 is configured by covering a plurality of electric wires 43a with a corrugated tube 43b made of synthetic resin, and a front end lower portion of the corrugated tube 43b is fixed to the protector 50 by tape winding or the like. The corrugated tube 43b has concave grooves and ridges alternately in a bellows shape and exhibits good flexibility.

  One electric wire portion 43 a of the wire harness 43 is led out from the front portion of the protector 50 and connected to an auxiliary machine on the slide door side, and the other corrugated tube portion 43 b of the wire harness 43 is connected to the long lower opening 55 of the protector 50. It is slidably routed to the fixture 60 on the vehicle body 47 side via the transition space 46 (FIG. 5). In the transition space 46, each wire 43a of the wire harness 43 is safely protected from interference with the outside, water droplets, dust, and the like by the corrugated tube 43b.

  FIG. 3 shows a fully closed state of the slide door 41, and FIG. When the sliding door 41 is fully closed, the wire harness 43 is pulled rearward, and when the sliding door 41 is fully opened, the wire harness 43 is pulled forward. However, it is biased upward by the leaf spring 44 to absorb slack (excess length), and pinching due to drooping is prevented.

  FIG. 6 shows a cushioning member on the rear end side of the cap 49 in order to prevent the interference sound between the synthetic resin cap 49 provided on the leaf spring 44 in the protector 50 and the inner surface of the wall portion 53 of the protector 50. The example which arrange | positioned 57 is shown (refer patent document 3). For convenience of explanation, the same components as those in FIG.

The buffer member 57 is formed of a flexible felt, and the narrow portion 44a at the tip of the leaf spring 44 is inserted into the slit-shaped hole portion 58, and the cap 49 is externally engaged with the narrow portion 44a to be locked. A buffer member 57 is disposed between the rear end of the rear spring and the wide portion of the leaf spring 44. The buffer member 57 is wider than the cap 49, and the buffer member 49 prevents interference noise between the cap 49 and the protector 50 (FIG. 3). The corrugated tube 43 in this example has an oval cross section, and the protector 50 (FIG. 3) is thinned.
JP 2001-354085 A (FIGS. 4 and 7) JP 2006-20375 A (FIGS. 1 and 2) Japanese Patent Laying-Open No. 2003-335190 (FIG. 4)

  However, in the above-described conventional noise prevention structure for each power feeding device, the interference between the wire harness 43 and the protector 50 and the interference between the cap 49 of the leaf spring 44 and the protector 50 are separately buffered. The members 56 and 57 must be provided, and there is a problem that the cost of the buffer members 56 and 57 and the man-hours required to assemble the buffer members 56 and 57 are high, and the structure is complicated. Further, when the wire harness 43 swings as the slide door 41 is opened and closed, the cap 49 or the corrugated tube 43b hits the end of the buffer member 56 stuck in the protector, and the buffer member 56 is rolled or peeled off. There was a concern that it could be combined.

  In view of the above points, the present invention provides a simple structure for preventing interference between a leaf spring cap (harness support) and a protector, and preventing interference between a wire harness and a protector at a low cost, and allows the cushioning member to swell. It is an object of the present invention to provide an abnormal noise prevention structure for a power feeding device that can be reliably performed.

In order to achieve the above object, an abnormal noise prevention structure for a power feeding device according to claim 1 of the present invention is provided with an elastic member having a harness support in a protector, and the wire harness supported by the harness support is attached to the wire harness. In a power feeding device that is urged in a slack absorbing direction by an elastic member and is swingably led out from a long opening of the protector while bending the wire harness , at least one of inner walls facing the protector A single shock-absorbing member for preventing abnormal noise is provided on the inner wall surface , and the single shock-absorbing member is disposed at a position corresponding to the locus of the harness supporter when the wire harness is swung. When the support moves within the range of the single buffer member and the wire harness swings, a part of the wire harness is always positioned along the single buffer member, and the elastic member With The wire harness when bent in diameter while swinging, characterized in that the該Ichi sheets of cushioning member to a position in which along the small-diameter bent portion of the wire harness is arranged against.

  With the above configuration, for example, when the protector is mounted on the slide door and the wire harness is routed from the protector to the vehicle body, the wire harness has a large diameter against the bias of the elastic member in the protector when the slide door is fully closed. Pulled in one direction from the opening while bending, the wire harness tries to loosen when the sliding door is half open, but is loosened and absorbed by the urging force of the elastic member, and the wire harness urges the elastic member inside the protector when the sliding door is fully opened The harness supporter is a cushioning member while the elastic support member is expanded and contracted (expanded / contracted) in a cantilevered manner with the base side as a fulcrum as the sliding door opens and closes while bending to a small diameter against In the range of the buffer member. Accordingly, the harness supporter is always in contact with the buffer member, and interference sounds such as a hitting sound and a rubbing sound with the protector are prevented. The wire harness swings along the opening while being bent in the protector while being supported by the harness support, but at this time, the wire harness moves along the buffer member. Interference sounds such as rubbing sounds are prevented.

Also, when the wire harness is bent (wound) to a small diameter when the sliding door is fully open, compared to when the wire harness is bent to a large diameter when the slide door is fully closed and pulled out from the protector. In the protector, the harness of the wire harness is greatly violated, and it is easy to generate interference sound between the wire harness and the protector. To be prevented.

  According to the first aspect of the present invention, the harness supporter of the elastic member moves along the buffering member within the range of the buffering member as the wire harness bends and swings, so that the harness supporter and the protector always interfere with each other. Sound is prevented and interference between the harness support and the end portion of the buffer member does not occur, and the buffer member is prevented from being twisted or peeled off, so that the soundproof effect is maintained for a long time. Moreover, since the wire harness moves along the same buffer member together with the harness supporter, the buffer noise between the wire harness and the protector can be prevented at the same time. These increase the commercial value of the power feeding device. In addition, since the cushioning member for the harness support and the cushioning member for the wire harness can be shared, the cost for the cushioning member and its assembly is reduced, and the structure is simplified.

In addition, the interference sound with the protector due to the rampage when the wire harness is bent to a small diameter in the protector is reliably prevented by the buffer member, and the commercial value of the power feeding device is increased.

  1 to 2 show an embodiment of an abnormal noise prevention structure for a power feeding device according to the present invention. Constituent parts that are the same as or similar to those in the prior art are denoted by the same reference numerals and detailed description thereof is omitted.

  As shown in FIG. 1, the power feeding device 1 includes a protector 50 made of a synthetic resin, which includes a protector base 51 and a protector cover (not shown), and a metal leaf spring (elastic member) disposed in the protector. ) 44, a synthetic resin cap (harness support) 49 fixed to the tip of the leaf spring 44, a wire harness 43 that is bent in the protector and is stably supported by the cap 49, and the protector base 51 Each sheet-like cushioning member 2 is provided to face the wall surface 53 and the inner wall surface (not shown) of the protector cover.

  The shock-absorbing member 2 is formed in a vertically long rectangular shape, and is vertically moved in a range from the lower side of the arcuate peripheral wall 54 of the protector 50 to a slightly upper side of the horizontal long lower opening 55 in the rear portion of the protector 50. Arranged in the direction.

  That is, the buffer member 2 is disposed so as to contact the wire harness 43 when the wire harness 43 is wound, that is, when the sliding door (reference numeral 41 in FIG. 3) of the automobile is fully opened, and as shown in FIG. The cap 49 of the leaf spring 44 is arranged so as to be always in contact with the cap 49 in the entire range where the cap 49 swings up and down when fully open and fully closed. In the specification, the front-rear, up-down, left-right directions coincide with the vehicle direction.

A wire harness 43 indicated by a chain line in FIG. 1 is when the slide door is fully closed, and a second upper portion 43c of the wire harness 43 bent in the protector is in contact with the upper portion of the buffer member 2. Those positions of the upper plate spring 44 shown by a chain line in FIG. 2 is a fully closed sliding door, the position of the lower plate spring 44 shown by the solid line is of when the sliding door is fully opened.

  In FIG. 1, when the sliding door is half open, the wire harness 43 is urged by the leaf spring 44 and is lifted slightly from the position of the chain line to absorb slack (excess length). It is located in the upper part of the buffer member 2 without removing from the upper side. In FIG. 2, when the sliding door is half-opened, the leaf spring 44 rises slightly from the position of the chain line, but at this time, the cap 49 of the leaf spring 44 is located on the upper portion of the buffer member 2 without coming off the buffer member 2. .

  In FIG. 1, the leaf spring 44 and the wire harness 43 when fully opened are bent with a small diameter, but the diameters of these 43 and 44 are set with a margin more than the maximum (minimum diameter) bending. (The leaf spring 44 contacts the annular bending regulating wall 61 of the protector 50 at the maximum bending time). In order to cope with the maximum bending, it is preferable that the buffer member 2 is formed a little wider in the forward direction toward the bending restriction wall 61.

  The wire harness 43 shown by a solid line in FIG. 1 is when the sliding door is fully opened, and the arc-shaped bent portion 43d ′ of the latter half of the bent portion 43d of the wire harness 43 bent to a small diameter in the protector is harnessed from the top to the bottom. It is in contact with the vertically long cushioning member 2 in the entire range in the longitudinal direction. Since the wire harness 43 contacts the buffer member 2 within a long (large) range of the arc-shaped bent portion 43d ′, the harness portion other than the arc-shaped portion (for example, a portion denoted by reference numeral 43d) interferes with the inner wall surface 53 of the protector 50. Therefore, it is possible to prevent abnormal noise with a single vertically long buffer member 2 (two on the protector base side and the protector cover side).

  It goes without saying that there is a gap between the outer peripheral surface of the wire harness 43 and the outer surface 2a of the buffer member 2 for smoothly swinging and bending the wire harness 43. When the wire harness 43 is violently swung and bent in the thickness direction of the protector 50 when the wire harness 43 swings and bends, the wire harness 43 abuts (impacts) the buffer member 2, and abnormal noise or the outer peripheral surface of the wire harness 43, that is, the corrugated The wear of the tube 43b is prevented. 1 is more likely to occur when winding the solid line (when opening the sliding door) than when the chain line shown in FIG. 1 is extended (when the sliding door is closed), and the arrangement of the buffer member 2 in the form shown in FIG. Is also effective.

  As shown in FIG. 2, the cap 49 of the leaf spring 44 moves back and forth while moving up and down along the buffer member 2. That is, as the leaf spring 44 rises while expanding its diameter as shown by a chain line when the sliding door is fully closed, the cap 49 moves to the upper half and the latter half of the buffer member 2, and when the sliding door is fully opened, the leaf spring 44 is as shown by a solid line. The cap 49 moves to the lower half and the first half of the shock-absorbing member 2 as it descends while reducing its diameter.

  There is no need to provide a buffer member in the cap 49 as in the prior art, and the noise prevention structure is simplified and reduced in cost. In addition, since the cap 49 does not pass through the end portion 2b of the buffer member 2, the buffer member 2 is not bent or peeled off. In addition, since the portions 43d 'and 43c of the wire harness 43 are always in contact with the buffer member 2 when the slide door is fully opened and fully closed, the buffer member 2 is bent or peeled off when the wire harness 43 is swung or bent. It is hard to happen.

  In FIG. 1, reference numeral 60 denotes a vehicle body side harness fixture, 43 a denotes an electric wire portion of the wire harness 43, and 62 denotes an electric wire outlet of the protector 50. Although the shape of the protector 50 is illustrated in a simplified manner, the shape similar to that in FIG. 3 or a similar existing shape is preferable.

  Further, in this example, the leaf spring 44 is disposed in the front portion of the protector 50, and the wire harness 43 is led out from the rear portion of the protector 50 to the vehicle body side when the sliding door is closed. 1 has a leaf spring 44 arranged in the rear part of the protector 50 symmetrically in the front-rear direction, and the wire harness 43 is led out from the front part of the protector 50 to the harness fixture 60 on the vehicle body side. It is also possible to arrange them at symmetrical positions.

  Moreover, the lead-out position of the wire harness 43 from the protector 50 to the slide door is not limited to the front end opening 62 of the protector 50, and for example, penetrates the annular bend restriction wall 61 from the through hole 63 inside the bend restriction wall 61. It is also possible to derive it.

  Further, instead of the leaf spring 44, it is also possible to use an elastic member such as a coil spring or a rod spring (not shown). Further, as the wire harness 43, a plurality of insulation-coated wires 43a are attached with a mesh tube (not shown) instead of the corrugated tube 43b, or the plurality of wires 43a are roughened with tape or the like without using these protective tubes. It is also possible to use it by winding it. Moreover, the shape of the cap 49 which is a harness supporter can be changed as appropriate, and for example, a configuration in which the wire harness 43 is held over the entire circumference can be used.

  Moreover, in the said embodiment, although the shape of the buffer member 2 was made into the rectangular shape, the buffer member 2 was formed in circular arc shape corresponding to the movement locus | trajectory of the cap 49 or the arc-shaped bending part 43d 'of the wire harness 43, for example. It is also possible to do. Moreover, in the said embodiment, although the buffer member 2 was demonstrated as a sheet-like thing, for example, a nonwoven fabric, a short brush-like thing, a plate-like elastomer material (not shown) etc. are integrated resin on the inner surface of the protector 50, for example. It can also be provided by molding or the like.

  Moreover, in the said embodiment, although the example which arrange | positioned the protector 50 to the slide door 41 vertically (vertical) was demonstrated, for example, when arrange | positioning the protector 50 horizontally (horizontal) to a slide door or a vehicle body, The buffer member 2 only needs to be provided on the lower protector base 51 or the upper protector cover (not shown). Even in the case of vertical installation, the noise is reduced by providing a total of one buffer member 2 on the protector base 51 or the protector cover.

  Moreover, in the said embodiment, although demonstrated in the example applied to the slide door 41 of a motor vehicle, the said electric power feeding structure is applied to slide doors, such as a slide seat of a motor vehicle, vehicles other than a motor vehicle, an inspection apparatus, etc. other than a motor vehicle slide door It is also possible to apply.

It is a front view which shows one Embodiment of the noise prevention structure of the electric power feeder which concerns on this invention. It is a front view which similarly shows the motion of the leaf | plate spring part of an electric power feeder. It is a disassembled perspective view which shows one form of the noise prevention structure of the conventional electric power feeder. It is AA sectional drawing of FIG. It is a perspective view which similarly shows operation | movement of an electric power feeder. It is a principal part perspective view which shows the other form of the noise prevention structure of the conventional electric power feeder.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric power feeder 2 Buffer member 43 Wire harness 43d 'Bending part 44 Leaf spring (elastic member)
49 Cap (harness support)
50 Protector 53 Inner wall 55 Opening

Claims (1)

An elastic member having a harness support is provided in the protector, and the wire harness supported by the harness support is biased in the slack absorption direction by the elastic member, and the elongated opening of the protector is bent while the wire harness is bent. In a power feeding device that is swingably derived from
One buffer member for preventing abnormal noise is provided on at least one of the opposing inner wall surfaces of the protector , and the one buffer member supports the harness when the wire harness swings. Arranged at a position corresponding to the trajectory of the tool, the harness support tool moves within the range of the single cushioning member,
When the wire harness swings, a part of the wire harness is always located along the one cushioning member, and the wire harness swings to a small diameter against the bias of the elastic member. An abnormal noise prevention structure for a power feeding device , wherein the one cushioning member is disposed at a position along which a small-diameter bent portion of the wire harness is bent when bent .

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