JP3467465B2 - Foreign matter discharge structure of wire harness winding device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness winding device to be assembled in a wire harness arranged between a fixed body and a movable body, and more particularly to a foreign matter which enters the wire harness winding device to the outside. The present invention relates to a wire harness winding device adapted to discharge the wire harness.

[0002]

2. Description of the Related Art A wire harness winding device of this type includes an electric component such as a motor for a power window or a door mount speaker provided on a vehicle door of an automobile,
The harness that connects the power supply and the control unit on the vehicle body side can be rolled out freely so that the length change of the harness due to the opening and closing of the vehicle door can be followed. As this wire harness winding device, for example, there is one proposed by Japanese Patent Application No. 11-173368, which has been filed by the present applicant. This is, as shown in FIG. 8, a roller 2 that winds and unwinds the wire harness 1, and a case 3 that rotatably accommodates the roller 2.
And is roughly configured.

As shown in FIG. 9, the roller 2 has a winding cylinder 2a around which a belt-shaped member 4 is wound, and a winding spring 2b for urging the winding cylinder 2a to rotate in the winding direction of the belt-shaped member 4.
And is configured. When the wire harness 1 is installed, the strip-shaped member 4 is pulled out from the winding drum 2a while accumulating the urging force to the winding spring 2b, and the strip-shaped member 4 is pulled out from the winding member 2a via a tape or the like. The intermediate portion of the harness 1 is attached. As a result, the intermediate portion of the wire harness 1 is wound around the winding drum 2a by the urging force accumulated by the winding spring 2b. At this time, the wire harness 1 has a movable portion 1a on the side attached to the belt-shaped member 4.
And the opposite side becomes the fixed portion 1b and the winding drum 2
It is taken out from the notch portion 5a of "a", and the taken-out portion is wound around the central axis of the winding drum 2a by the number of permissible rotations of the winding drum 2a and then is routed to the target portion.

The case 3 includes a lower cover 3a and an upper cover 3
After the winding spring 2b and the winding cylinder 2a are set on the support shaft 6 projecting from the lower cover 3a, the upper cover 3b is attached to the lower cover 3a to close it. ing. In this way the roller 2
The case 3 accommodating the housing 3 is formed with a harness outlet 7 for taking out the movable portion 1a of the wire harness 1 on the outer peripheral portion thereof, and the fixed portion 1b is provided at a portion opposite to the harness outlet 7 for one side. The other harness outlet 7a to be taken out is formed.

[0005]

However, in such a conventional wire harness winding device, the harness lead-out port 7 which is normally placed horizontally and guides the movable part 1a of the wire harness 1 in and out is horizontally arranged. However, in a vehicle mounting condition, for example, in relation to the arrangement position of the electric components, or when it is not possible to secure a sufficient space for horizontal placement at the planned installation position of the winding device, this winding device is used. It may be forced to use it vertically. When the wire harness winding device is vertically installed in this manner, the harness outlet 7 may be attached so as to face upward as shown in FIG. 10. In this case, the harness outlet 7 is easily sanded. , Pebbles,
Foreign matter F such as dust enters the case 3.

Then, when the foreign matter F that has entered through the harness outlet 7 is a relatively large solid such as a small stone, the foreign matter F is wound on the winding drum 2a as shown in FIG.
It gets caught in the gap between the outer circumference and the inner circumference of the case 3. Further, even when the foreign matter F is a relatively small solid substance such as sand or soil, the foreign substance F is accumulated in the case 3 to become a large lump, and this lump is also the winding cylinder 2 again.
It will be caught between a and the case 3.

When the foreign substance F is bitten in this way, the winding drum 2a is locked and the wire harness 1 cannot be wound or unwound, and the original function of the wire harness winding device cannot be achieved. I will end up. For this reason, the wire harness winding device has a problem in that it is difficult to place the wire harness in the vertical direction and must be placed in the horizontal direction, and the layout thereof becomes difficult.

Therefore, the present invention has been made in view of the above conventional problems, and allows foreign matter that has entered the case to be naturally discharged to the outside of the case to prevent the roller from being locked by the foreign matter. An object of the present invention is to provide a wire harness winding device.

[0009]

A foreign matter discharging structure for a wire harness winding device according to a first aspect of the present invention is a wire harness winding device assembled to a wire harness installed between a fixed body and a movable body. A roller having a winding cylinder for winding and rewinding the wire harness, and a case provided with a roller for accommodating the roller rotatably and for drawing out the wire harness wound on the winding cylinder. , A tubular harness guide part that extends from this harness outlet and guides the wire harness pulled out from the harness outlet and sends it out from the tip outlet, and is formed on the lower wall surface of this harness guide part. The gist of the present invention is that it has a foreign matter discharge port.

According to a second aspect of the present invention, there is provided a foreign matter discharging structure for the wire harness winding device according to the first aspect, wherein the wall surface of the foreign material discharge port near the tip end is outside the wall surface near the case. The main point is that it is projected toward one side.

According to a third aspect of the present invention, there is provided a foreign matter discharging structure for the wire harness winding device according to the first or second aspect, wherein an obstacle is provided at a case side edge portion of the foreign matter discharging port. Use as a summary.

According to a fourth aspect of the present invention, in the foreign matter discharging structure of the wire harness winding device according to any one of the first to third aspects, a sub discharging port is formed in a part of the case. Is the gist.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. 1 to 7 show an embodiment of a wire harness winding device according to the present invention, and FIG. 1 is an exploded perspective view of the wire harness winding device,
2 is a perspective view of the wire harness winding device in an attached state, FIG. 3 is a front view of the lower cover of the wire harness winding device, and FIG. 4 is a state in which the winding cylinder is attached to the lower cover of the wire harness winding device. 6 is a front view of the wire harness winding device, FIG.
3 is an enlarged sectional view of a portion A in FIG. 3, and FIG. 7 is an enlarged sectional view of a portion B in FIG.

The wire harness winding device is a device for making an electrical connection between a fixed body and a movable body, for example, between a body of a car body and a door that is openably and closably attached to the body. The wire harness is installed between the movable body and the movable body, and the change in length of the wire harness due to opening and closing of the door is allowed to maintain the tension state of the wire harness. This wire harness winding device is applied to, for example, a front door, a back door, a sunroof, a luggage door of a vehicle.

That is, as shown in FIG. 1, the wire harness winding device 10 includes a roller 13 having a winding cylinder 12 for winding and rewinding the wire harness 11, and
A case 15 in which the roller 13 is rotatably accommodated and a harness lead-out port 14 for drawing out the wire harness 11 wound around the winding drum 12 is provided.
And extending from this harness outlet 14,
A cylindrical harness guide portion 16 that guides the wire harness 11 drawn out from the harness outlet 14 and sends it out from the tip end opening 25.

The roller 13 is composed of the winding cylinder 12 and a winding spring 17 for urging the winding cylinder 12 in the winding direction of the wire harness 11. The winding drum 12 has a drum shape as a whole, and a spiral groove 18 around which the wire harness 11 is wound is formed on the outer circumference of the winding drum 12, and a mounting hole 19 is formed at the center thereof. On the other hand, the take-up spring 17 is formed of a plurality of coil springs, and bent engaging portions 17a and 17b are formed at both ends thereof.

The case 15 is composed of a lower cover 15a and an upper cover 15b. The lower cover 15a has a circular bottom 2
0 and a peripheral wall 21 are formed in a bottomed tubular shape, and a support shaft 22 rotatably inserted into the mounting hole 19 of the winding cylinder 12 is provided at the center of the circular bottom portion 20. On the periphery of the support shaft 22, concentric spring storage walls 23, 2 are provided at positions corresponding to the inner peripheral portion and the outer peripheral portion of the winding spring 17.
3a is projected. The harness outlet 14 is formed in a part of the peripheral wall 21. Also, the upper cover 15b
Has a shape along the open portion 24 of the lower cover 15a, and a closed cross section is formed by covering the open portion 24 and mounting the upper cover 15b.

The harness guide portion 16 is provided so as to project outward from the harness outlet 14 along the substantially tangential direction of the peripheral wall 21, and extends linearly from the base end portion (case 15 side) to the substantially central portion. The case 15 is smoothly curved from the center to the tip thereof in a direction slightly approaching the case 15. Then, the movable portion 11a of the wire harness 11 unrolled from the winding drum 12 housed in the case 21 is passed through the harness outlet 14 into the harness guide portion 16 and is formed at the tip portion thereof. It is sent out from the tip opening 25.

The harness guide portion 16 is divided into two parts along with the lower cover 15a and the upper cover 15b, and the lower guide 16a and the upper cover 15 are integrated with the lower cover 15a.
The upper guide 16b is integrated with b. The lower guide 16a is formed with a wall surface 26 arranged substantially parallel to the bottom surface 20 of the lower cover 15a and wall surfaces 26a and 26b rising vertically from both sides of the wall surface 26 to have a U-shaped cross section. On the other hand, the upper guide 16b is formed by a wall surface 26c having a shape that follows the open portion 27 of the lower guide 16a having a U-shaped cross section. And the lower cover 15
When the a and the upper cover 15b are combined, the lower guide 16
a and the upper guide 16b are coupled to each other, and the wall surfaces 26, 26a, 26b of the lower guide 16a and the wall surface 26c of the upper guide 16b.
And form a closed cross section. Further, the harness guide portion 16 includes the wall surface 26b of the lower guide 16a and the lower cover 15.
It is reinforced and supported by the triangular plate 28 provided at the corner between the peripheral wall 21 and the peripheral wall 21.

The wire harness winding device 10 constructed as described above is assembled between the concentric spring housing walls 23, 23a with the lower cover 15a opened as shown in FIG. The take-up spring 17 is arranged, and the mounting hole 19 of the take-up cylinder 12 is inserted into the support shaft 22 from above.
At this time, the engaging portion 17a on one end side of the take-up spring 17 is engaged with the take-up barrel 12, and the engaging portion 17b on the other end side is provided.
Notch 30 formed in the spring storage wall 23a (see FIG. 3)
, So that the assembly of the roller 13 is completed. The roller 13 assembled in this way is
A biasing force in the winding direction is accumulated in the winding spring 17 with respect to the rotation (counterclockwise in the drawing) of the winding cylinder 12 in the direction for rewinding the wire harness 11.

The fixing portion (not shown) of the wire harness 11 wound around the spiral groove 18 of the winding drum 12 is provided in a recessed portion 29 (see FIG. 1) formed on the outer peripheral portion of one surface of the winding drum 12. It is introduced and fixed to the locking portion 29a on the side wall. Then, the fixing portion of the wire harness 11 at the portion fixed to the locking portion 29a in this way cuts off the covered wire to expose the electric wires 11b and 11c (see FIG. 2), and exposes the exposed electric wires 11b and 11c. It is adapted to be taken out to the lead-out portion 15c of the upper cover 15b. The electric wires 11b and 11c thus taken out are provided with a protrusion 15d on the upper cover 15b.
After being fixed to a harness holding member 15e which is fixed via a tape with a tape (not shown) or the like, the harness holding member 15e is routed to a target connecting portion. At this time, the electric wires 11b and 11c are locked by the locking portion 29a.
From the to the lead-out portion 15c, the winding drum 12 is wound around the central axis of the winding drum 12 by the allowable rotation number of the winding drum 12.

Next, the movable portion 11a of the wire harness 11 wound around the winding drum 12 is connected to the harness outlet 1
4 to the wall surface 26, 26a, 26b of the lower guide 16a, and take out from the tip opening 25 thereof. afterwards,
Opening portions 24, 2 of the lower cover 15a and the lower guide 16a
By mounting the upper cover 15b and the upper guide 16b on 7, the assembly of the wire harness winding device 10 is completed.

FIG. 2 is a perspective view showing the wire harness winding device 10 which has been assembled, and the wire harness winding device 10 is installed vertically as shown in FIGS. 16 tip mouth 25
Are arranged facing upwards. Therefore,
By vertically arranging in this manner, the wall surface 26a of the harness guide portion 16 is placed below, and the wall surface 26a will be described below as the lower wall surface 26a.

Here, in this embodiment, the foreign matter discharge port 31 is provided on the base end side of the lower wall surface 26a of the harness guide portion 16.
Has been formed. As shown in FIG. 5, the foreign matter discharge port 31 has a length L1 sufficient to discharge the foreign matter F that has fallen along the lower wall surface 26a, and is formed with substantially the entire width W1 of the lower wall surface 26a. In addition, this foreign matter discharge port 31
As shown in FIG. 6, the wall surface X of the foreign matter discharge port 31 near the tip end port 25 is projected outward from the wall surface Y of the case 15 side. In other words, in this case, the wall surface Y near the case 15 is formed as the original lower wall surface 26a, while the tip opening 2 is formed.
The wall surface X near 5 is smoothly extruded outward along the length direction of the lower wall surface 26a. Furthermore, the case side edge portion 31a of the foreign matter discharge port 31 is provided with the wire harness 11
Is bent inward at a height that does not hinder the installation of the cable, and the bent portion is the obstacle 32.

Further, in this embodiment, the peripheral wall 2 of the case 15 is
As shown in the enlarged view of FIG. 6, a sub discharge port 33 is formed in the lowermost portion of the No. 1 unit. As shown in FIG. 5, the auxiliary discharge port 33 is formed with a circumferential length L2 and a substantially entire width W2 of the circumferential wall 21.

In the wire harness winding device 10 of the present embodiment having the above-described structure, the wire harness 11 is in a state of being naturally wound around the spiral groove 18 of the winding drum 12, and the wire harness 11 is movable. On the part 11a side,
After being pulled out from the harness lead-out port 14 of the case 15 that houses the winding cylinder 12, it is guided outward from the tip end port 25 through the harness guide portion 16. The movable part 11a is opened by opening a vehicle door which is a movable body.
When the wire harness 11 is pulled, the winding cylinder 12 rotates (counterclockwise in FIG. 4) against the urging force of the winding spring 17 to send out the wire harness 11, and the wire body 11 is fixed between the vehicle body main body side and the door side. It is possible to follow the dimensional changes between them.
When the pulling force of the wire harness 11 is released by closing the door or the like, the winding drum 12 causes the winding drum 12 to rotate.
The urging force of 7 rotates in the winding direction (clockwise in FIG. 4), and the movable portion 11a of the wire harness 11 is wound around the spiral groove 18 of the winding drum 12 and stored.

Here, in the present embodiment, the wire harness winding device 10 is mounted vertically, and the tip end opening 25 of the harness guide portion 16 for guiding the wire harness 11 outward is arranged facing upward. ing. For this reason, the harness guide 1
The foreign matter F easily enters the inside of the harness 6, and the foreign matter F that has entered falls along the lower wall surface 26a of the harness guide portion 16 as shown in FIG. Is about to be captured by. However, in the present embodiment, the lower wall surface 2 of the harness guide portion 16 is
Since the foreign matter discharge port 31 is formed in 6a, the foreign matter F falling in the harness guide portion 16 is discharged outward (downward) from the foreign matter discharge port 31. Therefore, even if the foreign matter F enters from the front end opening 25, it can be prevented from being taken into the case 15, so that the foreign matter F is not caught between the winding cylinder 12 and the peripheral wall 21 of the case 15. For,
It is possible to ensure stable operation of the wire harness winding device 10.

Further, since the auxiliary discharge port 33 is formed at the lowermost portion of the case 15, even when a relatively small foreign substance F which cannot be completely excluded from the foreign substance discharge port 31 enters the case 15, this foreign substance is also removed. When F moves to the lowermost part of the case 15, it can be discharged to the outside from the auxiliary discharge port 33. As a result, it is possible to prevent the relatively small foreign matter F from becoming a lump and being caught between the winding cylinder 12 and the case 15.

By the way, in the present embodiment, the foreign matter discharge port 31
Side wall X near the tip opening 25 of the side wall Y near the case 15
Since it projects further outward, the foreign matter discharge port 31 is provided at the step portion formed between these side walls X and Y. Therefore, due to this step portion, the lower wall surface 26a
The foreign matter F falling through can be guided to the foreign matter discharge port 31,
The discharge efficiency of the foreign material F can be improved.

Further, the lower side edge portion 3 of the foreign matter discharge port 31.
Since the obstacle portion 32 is provided on the la 1a, the foreign matter discharge port 31 is provided above the obstacle portion 32, and the lower wall surface 2
Even if the foreign matter F falling on the 6a jumps over the foreign matter discharge port 31 with its momentum, the foreign matter F can be stopped from falling when it hits the obstacle 32, so that the foreign matter F can be stopped. It becomes easy to discharge from. Of course, the obstacle 32 in this case is not limited to the bent portion, and other members can be attached to the obstacle 32 to form an obstacle.

[0031]

According to the invention described in claim 1, after the wire harness wound around the winding drum is pulled out from the harness outlet of the case for housing the winding drum,
While being guided outward through the harness guide portion, when the drawn wire harness is wound, the wire harness is guided by the harness guide portion and wound on the winding drum. When the wire harness winding device is attached with the tip opening of the harness guide section facing upward, foreign matter easily enters the harness guide section through this tip opening. It will be dropped along the lower wall of the case toward the case. At this time, since the foreign matter discharge port is formed on the lower wall surface of the harness guide part, the foreign matter that has entered is prevented from being discharged outward from the foreign matter discharge port and reaching the case. Therefore, it is possible to prevent foreign matter from being caught in the winding cylinder and locked, so that stable operation of the wire harness winding device can be ensured.
As a result, the wire harness winding device can be freely placed vertically without being constrained to be placed horizontally, which facilitates the layout.

According to the second aspect of the present invention, since the side wall of the foreign matter discharge port close to the tip end is projected outward than the side wall of the case close to the side wall, the step portion formed between the side walls is formed. The foreign matter discharge port is provided, and the stepped portion can reliably guide the foreign matter that falls from the harness guide portion to the foreign matter discharge port.

According to the third aspect of the invention, since the obstacle portion is provided on the lower side edge portion of the foreign matter discharge port, the foreign matter discharge port is provided above the obstacle portion, and the harness guide portion is provided. Even if the foreign matter falling through the foreign matter is jumped over the foreign matter discharge opening by the momentum, the momentum of colliding against the obstacle and falling can be stopped and guided to the foreign matter discharge opening.

According to the invention as set forth in claim 4, since the auxiliary discharge port is formed in the lowermost portion of the case, when a relatively small foreign substance which cannot be completely excluded from the foreign substance discharge port enters the case. Also, the foreign matter can be discharged to the outside from the auxiliary discharge port by moving to the lowermost part of the case. As a result, it is possible to prevent the relatively small foreign matter from becoming a lump and being caught between the winding cylinder and the case.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a wire harness winding device according to the present invention.

FIG. 2 is a perspective view of a wire harness winding device according to an embodiment of the present invention in an attached state showing the wire harness winding device according to an embodiment.

FIG. 3 is a front view of a lower cover showing an embodiment of the wire harness winding device according to the present invention.

FIG. 4 is a front view showing a wire harness winding device according to an embodiment of the present invention in a state where a winding cylinder is assembled to a lower cover.

FIG. 5 is a bottom view of a wire harness winding device according to an embodiment of the present invention in an attached state, showing the embodiment.

FIG. 6 is an enlarged sectional view of a portion A in FIG. 3 showing an embodiment of the wire harness winding device according to the present invention.

FIG. 7 is an enlarged cross-sectional view of portion B in FIG. 3 showing an embodiment of the wire harness winding device according to the present invention.

FIG. 8 is a perspective view showing a case of a conventional wire harness winding device in a see-through manner.

FIG. 9 is an exploded perspective view of a conventional wire harness winding device.

FIG. 10 is a schematic view illustrating foreign matter intrusion of a conventional wire harness winding device.

FIG. 11 is a schematic view illustrating a foreign matter biting state of a conventional wire harness winding device.

[Explanation of symbols]

10 Wire harness winding device 11 wire harness 12 winding cylinder 13 Roller 14 Harness outlet 15 cases 16 Harness guide part 25 Tip mouth 26a Lower wall surface 31 Foreign matter outlet 31a Case side edge 32 Obstacle 33 Secondary outlet

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Norimasa Suzuki 2464-48 Washizu, Kosai City, Shizuoka Prefecture Inside the Yazaki Parts Co., Ltd. (56) References JP 10-203725 (JP, A) JP 11-263178 (JP, A) JP 11-263174 (JP, A) JP 2001-2329 (JP, A) JP 2001-8434 (JP, A) JP 2001-8345 (JP, A) JP 2001-8346 (JP, A) JP 2001-8347 (JP, A) JP 2001-8349 (JP, A) JP 2002-112445 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H02G 11/00 B60R 16/02 B65H 75/48 H02G 3/38

Claims (4)

(57) [Claims] 1. A wire harness winding device for assembling to a wire harness arranged between a fixed body and a movable body, comprising: a roller having a winding cylinder for winding and rewinding the wire harness; And a case provided with a harness lead-out port for pulling out the wire harness wound on the winding drum, and a wire harness extended from the harness lead-out port and pulled out from the harness lead-out port. A foreign matter discharging structure for a wire harness winding device, comprising: a cylindrical harness guide portion that is then sent outward from the tip end opening; and a foreign matter discharging opening formed on a lower wall surface of the harness guide portion. 2. The foreign matter discharging structure of the wire harness winding device according to claim 1, wherein a wall surface of the foreign matter discharging port near the tip end port protrudes outward from a wall surface near the case. The foreign matter discharging structure of the wire harness winding device. 3. The foreign matter discharging structure of the wire harness winding device according to claim 1, wherein an obstacle is provided at a case side edge portion of the foreign matter discharging port. Foreign matter discharge structure. 4. The wire harness winding device according to any one of claims 1 to 3, wherein the auxiliary discharge port is formed in a part of the case. Foreign matter discharge structure.