JP4235097B2 - Harness accommodating device and harness surplus length absorbing device - Google Patents

Description

  The present invention relates to a harness accommodating device and a harness surplus length absorbing device having a structure in which a wire harness is bent and accommodated in a protector.

    FIG. 10 shows an embodiment of a conventional harness housing device (harness surplus length absorbing device) (see Patent Document 1).

  This harness housing device (harness surplus length absorbing device) 41 includes a synthetic resin protector (case) 42 that houses a flat wire harness 46 bent in a substantially S shape, and a circle provided on one side of the protector 42. A columnar fixed guide 43, a columnar movable guide 44 provided slidably on the other side of the protector, and a coil spring 45 that urges the movable guide 44 together with the wire harness 46 in the direction opposite to the fixed guide 43. And a connector 47 provided at one end of the wire harness 46 and fixed to the wall portion of the protector 42.

  In the protector 42, the flat wire harness 46 is bent in a substantially S shape along the movable guide 44 and the fixed guide 43, and one end of the wire harness 46 continues to the connector 47 on one wall portion of the protector 42. The other is led out to the outside from a harness outlet 48 in the other wall of the protector 42.

A power source side wire harness 49 is connected to the connector 47 via a mating connector 50, and the other end of the wire harness 46 is connected to an electrical component such as a door (not shown) or an auxiliary device. The wire harness 46 is pulled out of the protector 42 while compressing the coil spring 45 in accordance with the opening operation of the opening / closing body, and the wire harness 46 tries to loosen when the opening / closing body is closed, but the coil spring 45 is movable in the extending direction. By urging and moving 44, the wire harness 46 is drawn into the protector 42 and the slack (excess length) is absorbed.
Japanese Patent Laid-Open No. 9-20189 (pages 4-5, FIG. 9)

  However, in the conventional harness housing device 41, the connector 47 of the wire harness 46 is separate from the protector 42. Therefore, the work of fixing the connector 47 to the protector 42 is troublesome, and the mating connector 50 There is a problem that it is difficult to firmly fix the connector 47 so as to withstand the pressing force at the time of fitting.

  In addition, when the wire harness is pulled out strongly by opening and closing the opening / closing body suddenly, there is a concern that a strong tensile force acts on the wire harness or the connector, and the wire harness tends to stretch or adversely affect the terminals in the connector. there were.

  Further, depending on the position of the coil spring 45 or the position where the connector 47 is provided, there is a concern that the harness portion 46a following the connector 47 is rubbed by the expansion and contraction of the coil spring (biasing member) 45 and is likely to be worn.

  In view of the above, the present invention can easily and securely fix the wire harness in the protector, and can easily and firmly fix the connector of the wire harness to the protector. It is an object of the present invention to provide a harness housing device and a harness surplus length absorbing device capable of reliably protecting a wire harness from interference with other components in the protector.

To achieve the above object, a harness housing apparatus according to claim 1 of the present invention includes a box-shaped protector for housing a flat wire harness, and a harness fixing member for fixing one of the flat wire harnesses to the inside of the protector. When the harness guide member to be guided to the outside from the harness outlet and the other of the flat wire harness in the protector returns folding Ha harness longitudinally, the annular portion projecting from the both sides of the harness guide slides A pair of guide pins to be freely engaged, a coil spring that is elastically provided between the annular portion and the tip end portion of the guide pin and biases the harness guide member in the harness retracting direction , and an end portion of the guide pin the and a first locking means for locking the said protector, the harness fixing member, lateral cross one of the flat wire harness A substantially triangular plate portion that is folded back, a guide plate that routes the one to the back side following the plate portion, a connector holding portion that holds the connector at the one end portion following the guide plate, A second locking means for the protector, and the harness fixing member is assembled to the bottom of the protector together with one of the flat wire harnesses and fixed by the second locking means, and the harness guide member and the A subassembly comprising a guide pin and the coil spring is assembled to the protector from above the harness fixing member and fixed by the first locking means .

  With the above configuration, the wire harness is fixed so as to be sandwiched between the harness fixing member and the inner wall surface of the protector, and interference between other components in the protector between the harness fixing member and the inner wall surface of the protector, etc. Without protection. Fixing of the harness fixing member to the protector is performed by one touch with the locking means.

In addition, the wire harness is changed not in the longitudinal direction but in the longitudinal crossing direction (for example, 90 ° direction), and the connection part of the wire harness is arranged in a desired direction (for example, a direction that does not interfere with the drawing of the wire harness from the protector). Is done. The wire harness is folded along the inclined portion of the substantially triangular plate portion and fixed so as to be sandwiched between the back sides of the guide plates, and is protected without interference with other components in the protector. When the wire harness is folded, the strain relief function is exerted, and even if a strong tensile force is applied to the wire harness, the tensile force is prevented from being received at the folded portion and transmitted to the wire harness connection side. The
In addition, a wire harness is connected to an opening / closing body such as a door or a trunk. For example, when the opening / closing body is opened, the wire harness is pulled out from the protector, and the harness guide member compresses the urging member in the opposite direction to the urging member. Move in the direction. When the opening / closing body is closed, the harness guide member is moved by the urging force of the urging member, and the wire harness is drawn into the protector to absorb the slack (extra length) of the wire harness. Within the protector, the wire harness is routed behind the harness fixing member and is protected from interference wear due to expansion and contraction of the biasing member. The wire harness can be routed in the transverse direction of the biasing member on the back side of the harness fixing member.

The harness housing apparatus according to claim 2 is the harness housing apparatus according to claim 1 , wherein the connector holding means of the connector holding portion includes a receiving portion that supports the connector in the mating connector fitting direction.

With the above configuration, the connector of the wire harness is securely fixed to the connector holding portion of the harness fixing member by one touch by the holding means. Since the connector does not wobble with respect to the protector (and does not swing), the connector of the mating wire harness is securely fitted and connected to the connector.
Further, when the connector of the mating wire harness is fitted to the connector, the pressing force of the mating connector is received by the receiving portion, and the connector is prevented from being retracted (retracted) into the protector. It is performed reliably with an accurate stroke.

The harness housing apparatus according to claim 3 is the harness housing apparatus according to claim 1 or 2 , wherein the protector includes a receiving portion that supports the connector in a mating connector fitting direction.

With the above configuration, when the connector of the mating wire harness is fitted to the connector, the pressing force of the mating connector is received by the receiving portion and the connector is prevented from being retracted (retracted) into the protector. The alignment is ensured with an accurate stroke. The receiving force is further enhanced by the combination with the receiving portion described in claim 2 .

The harness housing device according to claim 4 is the harness housing device according to any one of claims 1 to 3 , wherein the harness fixing member includes a frame-like portion that integrally fixes a protective tube around the wire harness. And the flat wire harness is routed through the frame-shaped portion.

  With the above configuration, the protective tube of the wire harness is firmly fixed to the frame-shaped portion of the harness fixing member. For example, the end portion of the protective tube is integrally set in the molding die during resin molding of the harness fixing member, and the frame-shaped portion is molded in that state, so that the protective tube and the frame-shaped portion are firmly integrated. . When a strong tensile force is applied to the wire harness, the protective tube is prevented from coming off, and the protective tube and the current-carrying part of the wire harness receive the tensile force in half. A tensile force does not act, and the bad influence to a wire harness connection part etc. is prevented.

  According to the first aspect of the present invention, the wire harness can be easily fixed to the protector by the locking means, and the wire harness is fixed so as to be pinched. It is possible to prevent the adverse effect on the connecting portion of the wire harness. Moreover, since the wire harness is covered and protected by the harness fixing member, interference with other components in the protector is prevented, and the wire harness is prevented from being worn or damaged, thereby improving the reliability of power supply. .

Moreover, the connection direction of a wire harness can be changed according to the position of the other party wire harness, the pull-out direction of a wire harness, etc., and a connection of a wire harness can be performed reliably without difficulty. Further, the resistance against pulling of the wire harness is increased by the folded portion of the wire harness, the adverse effect on the connection portion of the wire harness is prevented, and the reliability of the electrical connection is improved.
In addition, when the wire harness is pulled out and retracted when the door or trunk opens and closes, the harness fixing member prevents wear and damage due to interference between the biasing member and the wire harness, improving the reliability of constant power supply To do.

According to the second aspect of the present invention, the connector can be fixed and positioned to the protector easily and reliably, and the fitting workability with the mating connector can be improved.

Further, the fitting connection with the mating connector is reliably performed with an accurate stroke, and the reliability of the electrical connection is improved.

According to the third aspect of the present invention, the fitting connection with the mating connector is reliably performed with an accurate stroke, and the reliability of the electrical connection is improved. In particular, the reliability of the electrical connection can be further enhanced by a synergistic effect with the receiving portion according to claim 2 .

According to the invention of claim 4, even when a strong tensile force acts on the wire harness, the protective tube does not come off from the harness fixing member, and the inside of the wire harness is reliably prevented from interference with the outside, water drops, dust, or the like. Protected and power supply reliability is improved. In addition, when a strong tensile force is applied to the wire harness, the protective tube shares and receives the tensile force. Therefore, disconnection of the wire harness and disconnection of the connection part (such as terminal disconnection) are reliably prevented, and electrical connection is prevented. Reliability is improved.

  FIG. 1 shows an embodiment of a harness housing device (harness surplus length absorbing device) according to the present invention, and FIG. 2 shows the internal structure of the harness housing device.

  This harness housing device (harness surplus length absorbing device) 1 includes a synthetic resin protector 5 including a box body 3 and a cover 4 for housing a flat wire harness (wire harness) 2 in a substantially U-shaped state. , A pair of left and right metal compression coil springs (biasing members or elastic members) 6 housed in the protector 5, and synthetic resin made to be inserted through the inside of each coil spring 6 and fixed to the box body 3 at both ends. The guide pin 7, the harness guide member 8 made of synthetic resin that is movable in the protector 5 along the guide pin 7, and urged in the harness pull-in direction by the coil spring 6, and the harness guide member 8 in the protector Is arranged on the opposite side, the proximal end side of the flat wire harness 2 is bent at 90 ° and guided into the connector fixing portion 9 on the side of the box body 3, and the Is obtained by a preparative wire harness proximal end of the connector 10 (FIG. 2) made of synthetic resin to be positioned in the connector fixing portion 9 while holding the harness fixing member 11.

  The box body 3 is formed deeper than the cover 4. After the internal components 6 to 8, 10, 11 are accommodated in the box body 3 as shown in FIG. 2, the cover 4 is mounted as shown in FIG. 1. The box body 3 and the cover 4 are fixed to each other by locking means such as a locking frame portion 12 and an engaging protrusion (not shown).

  As shown in FIG. 3, one side wall 13 of the box body 3 is integrally formed with a substantially U-shaped wall portion that forms a connector fixing portion 9 on the front wall 14 side. A receiving wall (receiving portion) 16 that abuts on the rear end of the connector 10 (FIGS. 2 and 5) is projected. The receiving wall 16 is positioned so as to protrude into a connector fixing portion 18 of the harness fixing member 11 described later. Behind the receiving wall 16, the bottom wall 15 continues to the bottom wall 19 of the box body 3 via the inclined portion 17. The inclined portion 17 is composed of a plurality of ribs, and the tip of the rib 17 supports the flat cable 20 of the flat wire harness 2 on the back side of the harness fixing member 11 as shown in FIG. A connector of a wire harness (not shown) on the vehicle body side (power supply side) is fitted and connected to the connector 10. An opening 23 for unlocking the lock arm 22 of the connector 10 (FIG. 5) is provided on the bottom wall 15 below the receiving wall 16 in FIG.

  In the specification, directions such as up, down, front, back, left, right, and bottom are merely for convenience of explanation, and do not necessarily coincide with the actual use posture of the protector 5. Depending on the direction in which the protector 5 is used, for example, the front wall 14 of the box body 3 is a rear wall and the bottom wall 19 is a top wall.

  In FIG. 3, on both sides of the receiving wall 16, the side wall 24 on both sides of the connector fixing portion 9 has an engagement recess (locking means) 26 for the locking protrusion (locking means) 25 (FIG. 6) of the harness fixing member 11. Is formed. A harness housing portion 27 is formed in the center of the box body 3 in the width direction, and coil spring housing portions 28 are formed on both sides thereof, and the harness is fixed to the other side of the harness body 27 (the side opposite to the connector fixing portion 9). An engagement frame portion (locking means) 30 for the locking claw piece (locking means) 29 of the member 11 (FIG. 4) is provided.

  In addition, on the inner surface of the front wall 14 of the box body 3, a vertical rib (locking means) 32 is extended from the upper harness outlet 31, and a pair of the rib 32 is attached to the harness fixing member 11 (FIG. 5). Positioning protrusions 33 (locking means) and a locking groove therebetween are formed. The harness fixing member 11 is locked (removably fixed) to the box body 3 by each locking means.

  In FIG. 3, the front and rear walls 14, 34 of the box body 3 have locking holes (locking means) for protrusions (locking means) at both ends of the guide pins 7 (FIGS. 2, 4) inside the coil spring 6. ) 35, and the coil spring 6, the guide pin 7, the harness guide member 8 (FIG. 2), and the flat wire harness 2 can be attached to and detached from the box body 3 integrally (as a subassembly).

  In FIG. 2, a flange portion 36 is integrally formed at the proximal end of the guide pin 7 and a stop projection (not shown) is integrally formed on the distal end side, and each flange portion 36 has one rib 32 and a step portion 38 in FIG. Positioning and engaging are respectively performed between the other rib 32 and the other side wall 37, stop protrusions (not shown) abut against protrusions (not shown) in the annular portions 39 on both sides of the harness guide member 8, and the annular portions 39, the tip of the coil spring 6 abuts elastically, and the annular portion 39 does not slip backward from the guide pin 7 and is slidable along the guide pin 7 in the longitudinal direction of the harness.

  The harness guide member 8 includes a central guide portion main body 40 and annular portions 39 on both sides. A curved surface (harness guide surface) having a semicircular cross section is formed on the guide portion main body 40, and the flat wire harness 2 has a curved surface. And is led out to the outside from the harness lead-out port 31 at the front end of the protector, and is connected to an electrical component such as a door or a trunk (luggage door) and an auxiliary device (not shown) and auxiliary equipment.

  As shown in FIG. 1, when the opening / closing body is opened, the flat wire harness 2 is pulled out from the protector 5, and accordingly, the harness guide member 8 compresses the coil spring 6 while moving in the harness pulling direction along the guide pins 7. When the opening / closing body is closed, the coil spring 6 extends and the harness guide member 8 moves in the reverse direction by the spring force, and the wire harness 2 is drawn into the protector 5 to absorb the slack (excess length).

  As shown in FIGS. 6 and 7, the harness fixing member 11 is integrally formed of a synthetic resin material, and a synthetic resin net-like flexible protective tube 21 on the outer periphery of the wire harness is inserted into a slit-shaped insertion hole 51 (FIG. 1). , FIG. 9), a substantially rectangular frame-like portion 52 integrally fixed to the peripheral edge of FIG. 9, a substantially triangular plate portion 53 (FIG. 4) for harness guidance following the frame-like portion 52, and the plate portion 53. The harness guide has a rectangular plate part (guide plate) 54 for guiding a harness that is bent upward (inclined) in a substantially square shape on the base side, and a connector holding part 18 that follows the guide plate 54.

  The inclined portion of the guide plate 54 is located along the inclined portion 17 of the box body 3 in FIG. The flat cable (current-carrying part) 20 inside the protective tube 21 of the flat wire harness 2 passes through the insertion hole 51 of the frame-shaped part 52 (FIG. 1), and 90 ° direction on the back surface of the triangular plate part 53 (FIG. 5). It is bent in the (orthogonal direction) to be divided into two layers on the front and back of the plate portion 53, and is routed inside the connector holding portion 18 along the back surface of the rectangular guide plate 54 so as not to interfere with the coil spring 6. Yes.

  The flat cable 20 is formed by wiring a plurality of circuit conductors in parallel on a strip-shaped insulating sheet, and terminals (female terminals) are connected to the ends of the circuit conductors. The connector 10 is configured by being inserted into each terminal accommodating chamber. The terminal is inserted into the connector housing 10 before or after the flat cable 20 is attached to the harness fixing member 11. The connector housing 10 is fixed to the connector holding portion 18. 5 and 8, illustration of terminals in the connector is omitted.

  As shown in FIG. 6, the connector holding portion 18 includes an upper vertical plate-like wall portion 55 that follows the inclined guide plate 54, and a plate-like shape that is orthogonal to both sides of the vertical wall portion 55 and extends downward. A side wall 56, a flexible holding arm (holding means) 58 that protrudes from the front end of the vertical wall portion 55 and has a hooking groove 57 on the inside of the front end, and inside the front end on the lower side of the wall portions 56 on both sides. A pair of projecting plates (receiving portions) 59 projecting and a pair of hook portions (holding means) 60 for hooking projecting in a substantially L shape from the lower front surface of each projecting plate 59 are provided.

  As shown in FIG. 7, the flange 61 at the upper rear end of the connector housing 10 is engaged in the groove 57 of the upper holding arm 58, and the lower rear end of the connector housing 10 is engaged with the lower pair of hook portions 60 as shown in FIG. The hook 62 is engaged, and the connector is detachably locked. The flange portion 62 at the lower end of the rear end abuts against the pair of projecting plates 59, and the pressing force in the connector fitting direction is received by the projecting plate 59 and the receiving wall 16 (FIG. 5) of the box body 3, so that the mating connector Secure fitting is possible. In FIG. 7, the rear end portions of the side walls 10a of the connector housing 10 enter between the side walls 56 of the connector holding portion 18 and are stably positioned and supported without play in the circumferential direction. As shown in FIG. 8, in this example, the terminal housing chambers 64 of the connector housing 10 are provided in two upper and lower stages, and accordingly, the flat cable 20 is also arranged in two upper and lower layers.

  6 and 7, a locking projection 25 is provided on the outer surface of both side walls 56 of the connector holding portion 18, and the locking projection 25 engages with the engagement recess 26 of the box body 3 in FIG. A slit portion 63 is provided in the upper part of both side walls 56, and a protrusion (not shown) on the inner surface of the cover 4 (FIG. 1) of the protector 5 enters and engages the slit portion 63. A low-profile cover wall (not shown) is integrally formed on the cover 4 so as to face the connector fixing portion 9 of the box body 3, and the protrusion is provided on the inner surface of the cover wall.

  As shown in FIG. 9, the net-like protective tube 21 on the outer periphery of the flat wire harness 2 is firmly fixed to the inner surface side of the insertion hole 51 of the frame-like portion 52 of the harness fixing member 11 by integral resin molding. That is, when the harness fixing member 11 is resin-molded in the molding die, the distal end portion 21a of the protective tube 21 is set in the same molding die, and the distal end of the protective tube 21 is simultaneously formed with the resin molding of the frame-shaped portion 52. The part 21 a is inserted into the frame-like part (resin part) 52. The protective tube 21 is preferably flexible, flexible and slidable.

  Thereby, even if a strong tensile force acts on the flat wire harness 2 when the opening / closing body (not shown) is opened, the protective tube 21 is not detached from the harness fixing member 11, and the tensile force is flat with the protective tube 21. Since the cable 20 is shared and received, an unreasonable tensile force does not act on the terminal connection portion of the flat cable 20, for example, the connector 10, and the reliability of electrical connection is increased.

  As shown in FIGS. 4 and 5, the rectangular guide plate 54 of the harness fixing member 11 is positioned close to the lower side of one coil spring 6, and the flat cable 20 is disposed on the lower side of the guide plate 54. Therefore, interference between the coil spring 6 and the flat cable 20 does not occur, and the flat cable 20 is reliably prevented from being worn or damaged.

  In a state where the flat wire harness 2 is routed and fixed to the harness fixing member 11, the harness fixing member 11 is set in the box body 3 from the upper opening and lightly pressed from the upper side toward the bottom wall 19, thereby the harness. The locking means of the fixing member 11 and the box body 3 are engaged with each other, and the wire harness 2 can be easily assembled to the box body 3 with a single touch.

  Next, the sub-assembly in which the coil spring 6, the guide pin 7, and the harness guide member 8 are integrated is locked in the box body 3 by the locking means, and the flat wire harness 2 is folded back along the harness guide member 8. The harness housing apparatus 1 can be easily assembled with good workability by being led out from the harness outlet 31 on the front wall side and closing the cover 4.

  The rectangular guide plate 54 and the flat cable 20 of the harness fixing member 11 in FIG. 5 are preferably lightly fixed to each other with an adhesive tape or the like.

  In the above-described embodiment, the flat wire harness 2 including the flat cable 20 is used. However, instead of the flat cable 20, a plurality of small-diameter insulation-coated electric wires (not shown) are arranged in a horizontal row to arrange the wire harness. It is also possible to configure, or to remove the protective tube 21 and attach an insulating coating sheet (not shown) having good slidability to the outer periphery of the flat cable 20.

  Moreover, in the said embodiment, although the flat wire harness 2 was bent at right angle and the connector 10 of the flat wire harness 2 was fixed in the one side wall 13 of the box main body 3, without folding the flat wire harness 2 It is also possible to fix the connector 10 so as not to obstruct the harness outlet 31 on the front wall 14 side of the box body 3 while keeping it straight. It is also possible to eliminate the connector holding portion 18 of the harness fixing member 11 and connect the circuit conductor of the flat cable 20 directly to the circuit conductor (not shown) on the other side instead of the connector 10 by laser welding or the like. . Further, the cover 4 of the protector 5 can be freely opened and closed to the box body 3 by a hinge (not shown).

  In the above embodiment, the pair of coil springs 6 is used as the biasing means. However, a single coil spring may be arranged in the center to directly press the guide portion main body 40. Further, a corrugated leaf spring or the like may be used instead of the coil spring 6.

  The configuration of the present invention can also be applied to a configuration in which a flat wire harness is bent in a substantially S shape as in the conventional example. The configuration of the present invention can also be applied to a harness storage device that stores a wire harness in the protector without drawing or pulling out and arranges other components on the wire harness in the protector. .

It is a longitudinal cross-sectional view which shows one Embodiment of the harness accommodating apparatus (harness surplus length absorber) which concerns on this invention. It is a perspective view which similarly shows the internal structure of a harness accommodating apparatus. It is a perspective view which shows the box main body of a harness accommodating apparatus. It is a top view which shows the harness fixing | fixed part of a harness accommodating apparatus. It is an AA sectional view of Drawing 4 showing a harness fixation part similarly. It is a perspective view which shows a harness fixing member. It is a perspective view which shows the state which mounted | wore the harness fixing member with the connector. It is BB sectional drawing of FIG. 7 which shows the fixation structure of a connector. It is CC sectional drawing of FIG. 7 which shows a harness fixing structure. It is a disassembled perspective view which shows one form of the conventional harness accommodating apparatus.

Explanation of symbols

1 Harness accommodating device (harness surplus length absorbing device)
2 Flat wire harness (wire harness)
5 Protector 6 Coil spring (biasing member)
8 Harness guide member 10 Connector 11 Harness fixing member 16 Receiving wall (receiving portion)
18 Connector holding portion 21 Protective tube 29, 30, 32, 33 Locking means 31 Harness outlet port 52 Frame-like portion 53 Plate portion 54 Guide plate
59 protruding plate (receiving part)
58, 60 holding means

Claims (4)

A box-shaped protector to accommodate a flat wire harness, and the harness fixing member for fixing one of the flat wire harness inside of the protector and the other of the flat wire harness Shi return folded into a high harness longitudinally within said protector A harness guide member that is led out from the harness lead-out port, a pair of guide pins that slidably engage the annular portions protruding on both sides of the harness guide member , the annular portion, and a tip portion of the guide pin A coil spring that is provided between the coil spring and urges the harness guide member in the harness retracting direction , and first locking means for locking the end of the guide pin to the protector,
The harness fixing member includes a substantially triangular plate portion that folds one side of the flat wire harness in the crossing direction, a guide plate that routes the one on the back side following the plate portion, and the guide plate following the guide plate. A connector holding part for holding the connector at one end, and a second locking means for the protector;
The harness fixing member is assembled to the bottom of the protector together with one of the flat wire harnesses and fixed by the second locking means, and a sub-assembly including the harness guide member, the guide pin, and the coil spring is provided. A harness accommodating device assembled to the protector from above a harness fixing member and fixed by the first locking means . Connector holding means of the connector holding portion, the harness accommodating device according to claim 1, characterized in that it comprises a receiving portion for supporting the connector in the mating connector fitting direction. It said protector, harness housing apparatus according to claim 1, wherein further comprising a receiving portion for supporting the connector in the mating connector fitting direction. The said harness fixing member has a frame-shaped part which integrally fixed the protective tube of the flat wire harness outer periphery, and this flat wire harness is routed through the inside of this frame-shaped part. The harness accommodating device according to any one of to 3 .

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