JP2016067069A - Water cutoff tool for wiring harness and water cutoff structure of wiring harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water cutoff tool for preventing water droplets adhering to a wire of a wiring harness from entering a connector connected to a terminal of the wiring harness.SOLUTION: Disclosed is a water cutoff tool which is mounted on a wire group before a connector connection position of a wiring harness terminal. This water cutoff tool includes a reverse U-shaped frame whose both side frame parts protrude downward from both right and left ends of an upper end coupling part. This water cutoff tool has a configuration in which the upper end coupling part of the frame is covered on the upper end of one line of the wire group arranged vertically, right and left outer surfaces of respective wires are brought into contact with opposite inner surfaces of both side frame parts to insert the respective wires thereinto, and water droplets adhering to the outer surfaces of these wires and transferred to the connector are blocked and fall down by self weight by contact with both end frame parts.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a waterproofing device for a wire harness and a waterproofing structure of a wire harness using the waterproofing device, and in particular, a non-waterproof connector or a simple waterproof to a terminal of a wire harness that is wired to a place where water is not easily applied inside an automobile. When connecting a connector, it is suitably used when the connector is attached to a wire harness immediately before the connector connecting portion to stop water.

  When water is applied to a wire harness that is routed to a vehicle such as an automobile, water droplets adhere to the outer surface of the electric wire constituting the wire harness, and the adhering water droplet travels along the outer surface of the electric wire and enters the connector connected to the electric wire terminal. There is a fear. When water is generated in the connector, there is a problem in that corrosion of the terminal of the electric wire terminal inserted and locked in the connector occurs, which impairs electrical connection reliability.

  With respect to the above problem, the present applicant has provided a protector 110 for inserting the wire harness 100 as shown in FIGS. 10A and 10B in Japanese Patent Laid-Open No. 2012-253877 (Patent Document 1). The pressing partition wall 112 protrudes from the lower surface of the lid 111, and the water drain hole 114 is provided in the bottom surface of the protector body 113, and the water harness 100 is bent in a U shape by the pressing partition wall 112. Provide structure. In the water stop structure, water droplets adhering to the outer surface of the electric wire are dropped by their own weight at a portion where the wire harness is bent in a U shape.

The water stop structure using the water stop protector disclosed in Patent Document 1 is suitably used for a wire harness routed in a wet area such as an engine room of a vehicle. A waterproof connector is attached to the end of the wire harness routed in the flooded area, and measures to prevent water from entering the connector are finally performed using the waterproof connector.
On the other hand, in the non-waterproof area on the passenger compartment side including the inside of the instrument panel, waterproofing measures using a waterproof connector that is costly are not taken, and a non-waterproof connector or a simple waterproof connector is used. . However, since occupants may spill water in the passenger compartment or water may be blown when the door is opened, water-stopping measures should be taken for wire harnesses connected to electronic control units (ECUs) and junction boxes. It is preferable to apply.

  As a measure against the water stoppage, as shown in FIG. 11, for example, a connector 160 connected to a wire end of the wire harness 100 in a connector fitting portion 150a of an electric connection box 150 made of a junction box or ECU installed in an instrument panel. When the wire harness 100 is fitted and connected, the wire harness 100 is bent downward immediately before the connector connection portion and the tape 170 is wound around to provide the U-turn portion 200, and water droplets adhering to the wires of the wire harness 100 are self-weighted by the U-turn portion 200. I'm dropping it.

JP 2012-253877 A

  As shown in FIG. 11, when the wire harness is bent downward just before the connector connecting portion and is U-turned, a double path is formed, which increases the length of the electric wire and increases the possibility of interference with peripheral components. It is necessary to provide a protective member for prevention, which increases the cost of components and the number of work steps. Furthermore, there is a problem that the degree of design difficulty increases due to the relationship with peripheral parts, and there is also a problem that the U-turn work tends to vary.

  The present invention has been made in view of the above problems, and can easily drain water without making a U-turn on the wire group of the wire harness, so that water droplets adhering to the outer surface of the wire can be reliably immersed in the connector. It is an object of the present invention to provide a water harness waterproofing device that can be prevented and a water harness waterproofing structure using the water waterproofing device.

In order to solve the above-mentioned problem, the present invention is a water stop device to be attached to the electric wire group before the connector connection position of the wire harness terminal,
It has an inverted U-shaped frame with both side frame parts projecting downward from the left and right ends of the upper end connection part. The upper end connection part of the frame is covered on the upper end of a row of electric wires arranged vertically, and the both side frame parts are opposed to each other. The structure is such that the right and left outer surfaces of each electric wire are brought into contact with the inner surface and inserted, and the water droplets attached to the outer surface of these electric wires and transmitted to the connector are blocked by contact with both side frame portions and dropped by their own weight. A water stop device for a characteristic wire harness is provided.

The electric wire group inserted between the both side frame portions is a row of vertical lines in which terminals connected to the electric wire terminals are inserted into terminal insertion ports arranged in the vertical direction of connectors connected to the terminals of the electric wire group. It is an electric wire group, and it is preferable to reduce the dimension between the inner surfaces of the both side frame portions to be equal to or less than 10% with respect to the electric wire diameters arranged in the vertical direction. Thereby, the left and right outer surfaces of each electric wire are brought into contact with the both side frame portions to block the water droplets adhering to the left and right outer surfaces, thereby preventing water from entering the connector.
Therefore, when there are 2 or 3 rows of electric wires connected to the connector in the vertical direction, a water stop is attached to each row, and if there are 2 rows, 2 water stops and 3 rows Three waterstops will be attached.

Water droplets that fall from above on the group of wires wired side by side are attached mainly to the upper surface of the electric wire at the upper end position, and to the lower wires, water droplets adhere to the left and right side surfaces.
Therefore, as described above, the water stop device of the present invention is attached to the upper end of the group of electric wires arranged in a row, and the upper end connecting portion is brought into contact with the upper surface of the upper end of the electric wire, and When the inner surfaces of the both side frame portions are brought into contact with the left and right side surfaces of each lined wire, the water droplets traveling along the upper surface of the upper end electric wire and the left and right side surfaces of each electric wire come into contact with the water stop device so that the water droplet flows. It is blocked and water can be prevented from entering the connector. The water droplets blocked by the water stop device fall by their own weight along the surfaces of the both side frames. As described above, the above-mentioned problem that occurs when the conventional wire group is bent by making a U-turn can be cut off by simply covering the wire group with a water-stopping device having a simple inverted U-shape. Can be resolved.

  When the water stop device of the present invention is provided with spring properties in the direction in which the both side frame portions are close to each other, the water stop device can be sandwiched in contact with the electric wire inserted between the both side frame portions. It can be positioned and held at a required position with respect to the group.

The water stop device of the present invention is provided with a lower end closing frame provided with a locking claw inserted and locked into the locking hole at the lower end portion of the both side frame portions and a locking hole at the other lower end portion, A lock claw may be inserted and locked in the lock hole in a state where the electric wire group is passed between the both side frame parts, and the lower end of the both side frame parts may be closed with a lower end closing frame.
Further, a plurality of the lock claws are provided at the tip of the lower end closing frame with a gap in the projecting direction, the lock claws to be engaged with the lock holes are selected, and the wire diameter passing through the gap between the both side frame portions is selected. It may be adjustable.

The inverted U-shaped frame is a resin molded product, a rubber molded product, or a two-color molded product using rubber on the inner surface side of the both side frame portions and resin on the outer surface side.
If it is a resin molded product, it can be press-contacted to the side surface of the electric wire which penetrates both frame parts as a spring piece.
When the rubber molded product is used, even if the diameters of the inserted wires are different, both side frame portions can be brought into close contact with the side surfaces of the wires, and they can be used in common for the wires having different sizes.
If the two-color molded product is made of rubber on the inner peripheral side and resin on the outer peripheral side, both side frames can be brought into close contact with each other and the required rigidity can be maintained even if the wire diameters are different.

Furthermore, in the water stop device of the present invention, two frames having the inverted U shape are juxtaposed in the length direction of the electric wire, and the lower ends of one of the side frame portions of these frames are connected to each other. You may connect via a frame.
When the two frames are attached with a gap in the length direction of the electric wire, water drops that could not be blocked by the frame on the opposite side (upstream side) of the connector connection side are connected to the connector connection side (downstream side). It can be blocked by the frame, and water stop reliability can be improved.

  When two frames are connected as described above, the size between the two side frame portions of the downstream frame is made narrower than the size between the two side frame portions of the upstream frame, and the two frames are rubbed by the upstream frame. The dropped water droplets may be reliably captured by the downstream frame.

  Also, when two frames are connected, a lower end provided with a lock hole at the lower part of one side frame part to be connected by the connection frame, and a lock claw that is inserted and locked into the lock hole at the other side frame part. It is preferable to provide a closing frame.

The water stop device of the present invention is preferably attached at a position of 0 to 20 mm from the end surface of the connector on the electric wire insertion side. Thus, it is preferable that the water stop is attached as close as possible to the connector so that water droplets do not adhere to the electric wire from above the gap between the water stop and the connector.
In addition, an eaves portion that covers the gap between the end surface of the connector on the electric wire insertion side and the water stop is projected from the upper front surface of the frame of the water stop device, and the eave portion is abutted against the end surface of the connector on the electric wire insertion side. May be.

  The width of the frame of the water stop device of the present invention is preferably 2 mm to 4 mm, and the vertical dimension corresponds to the vertical dimension of the connector connected to the electric wire group.

Moreover, this invention provides the water stop structure of the wire harness which attached the said water stop.
The water-stop structure of the wire harness using the water-stopper is laterally bent at a position immediately before connection with the connection device after routing the wire harness downward toward the connection device installed in a non-water-immersed area of the vehicle. Then, the connector connected to the end of the wire group of the wire harness is vertically oriented, and the wire group connected to the connector is arranged vertically.
The water stop device is attached to each row of electric wires arranged in the vertical direction immediately before the connection portion with the connector.

  Specifically, the wire harness is routed in an instrument panel of an automobile, and an electronic control unit (ECU) installed in the instrument panel or / and a vertical connector fitting portion provided in a junction box Further, the connector is fitted without making a U-turn on the terminal side of the wire harness.

  Since the water stop tool of the present invention has a simple shape with an inverted U-shaped frame, it can be provided at low cost and does not take up installation space. Moreover, it is only necessary to pass the electric wire between the both side frame portions of the water stop immediately before the connector connecting portion of the electric wire terminal of the wire harness. Therefore, it is not necessary to make the U-turn of the conventional electric wire to stop the water, the length of the electric wire required for making the U-turn can be reduced, and there is no problem that the U-turn part comes into contact with the peripheral device. The quality variation that sometimes occurs can be eliminated.

(A) is sectional drawing which shows the wiring state of the wire harness of embodiment, (B) is principal part explanatory drawing. The connector attached to the branch line terminal of the said wire harness is shown, (A) is a perspective view, (B) is explanatory drawing which shows the connection state of the connector and the electric wire of a branch line, (C) is a wiring form of a branch line FIG. The water stop attached to the said wire harness is shown, (A) is a perspective view, (B) is a perspective view of the state which expanded the both-sides frame part, (C) is the dimension between the both-sides frame part, and the electric wire diameter to penetrate. The principal part enlarged view which shows a relationship, (D) is drawing which shows the relationship between the up-down dimension of a water stop, and the up-down dimension of the electric wire group penetrated in the up-down one row. (A) (B) (C) is drawing which shows the state which attaches the said water stop to the branch line terminal of a wire harness. (A) (B) is drawing explaining the water stop effect | action by the said water stop tool. (A)-(D) are drawings which show the 1st-4th modification of the water stop tool of 1st Embodiment. 2nd Embodiment of the water stop tool of this invention is shown, (A) is a perspective view, (B) is a front view. The connector which connects the water stop tool of the said 2nd Embodiment is shown, (A) is a schematic side view of a connector. (B) is a perspective view which shows the state which has attached the water stop to the electric wire connected to the connector, (C) is a partially expanded view of (B). (A) (B) is drawing which shows the water stop effect | action of the water stop tool of the said 2nd Embodiment. (A) (B) is drawing which shows a prior art example. It is a perspective view which shows another prior art example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show a water harness for a wire harness according to a first embodiment.
As shown in FIG. 1, the water stop tool 1 is attached to a wire harness 2 routed inside an instrument panel 50 of an automobile. A non-waterproof connector 3 is connected to a terminal of a branch line 2b branched from the trunk line 2a wired in the left-right direction of the wire harness 2 and wired downward. The connector 3 is fitted vertically and vertically into a connector fitting portion 51 a provided in an electronic control unit 51 installed inside the instrument panel 50.

  As shown in FIG. 2, the connector 3 connected to the end of the branch line 2b of the wire harness 2 includes a plurality of rows of terminal accommodating chambers 3b in two stages inside a rectangular parallelepiped connector housing 3a. A terminal crimped to the end of each electric wire 4 of the electric wire group constituting the branch line 2b is inserted and locked from the entrance of the terminal accommodating chamber 3b opened to the electric wire insertion side end surface 3c of the connector 3. Since the inside of the instrument panel 50 is a non-immersed area, the connector 3 uses a non-waterproof connector as described above, and a waterproof rubber plug or the like is not attached to the electric wire to be inserted.

  As described above, the branch line 2b connecting the connector 3 to the terminal is branched downward from the trunk line 2a of the wire harness and is directed forward immediately before the connector 3 is fitted to the connector fitting portion 51a. Then, the connector 3 is bent in the horizontal direction, and the connector 3 is fitted in the connector fitting portion 51a in the vertically long direction. Therefore, as shown in FIG. 2B, the two-stage terminal accommodating chambers 3b of the connector 3 are arranged in the left-right direction, and the electric wires 4 connected to the five terminal accommodating chambers 3b in each stage are arranged in the vertical and vertical directions. The electric wires lined up and down form a two-row electric wire group of five right row electric wires 4R and five left row electric wires 4L.

  The water stop 1 shown in FIG. 3 is attached to each of the five right row electric wires 4R and the five left row electric wires 4L of the branch line 2b connected to the connector 3, and as shown in FIG. Two waterstops 1A and 1B are arranged side by side. The mounting positions of these two water stop devices 1 are in the range of 0 to 20 mm close to the wire insertion side end surface 3 c of the connector 3. The water stop 60 attaches the water droplet 60 to the outer surface of the electric wire 4 constituting the branch wire 2b at the upper position, and tries to immerse the connector 3 in the connector 3 through the outer surface of the electric wire 4R wired downward. Is stopped by the water stop 1A, and the water stop 1B prevents water from entering the connector 3 along the outer surface of the electric wire 4L.

  The water stop 1 (1A, 1B) is composed of a frame 10 formed by resin molding into an inverted U shape shown in FIG. The frame 10 has both side frame portions 10b, 10c suspended vertically from both left and right ends of an upper end connecting portion 10a having a downward arc shape. The downward arcuate upper end connecting portion 10a has a spring property in a direction in which both side frame portions 10b and 10c continuous at both ends are close to each other.

  Also, a lower end closing frame 10e is provided with a lock hole 10r at the lower end of the one side frame portion 10b, and a lock claw 10f that is inserted and locked into the lock hole 10r at the lower end of the other side frame portion 10c. Is protruding.

  As shown in FIG. 3 (C), the dimension L1 between the inner surfaces of both side frames 10b and 10c of the frame 10 is reduced by 0 to 10% with respect to the diameter of the inserted wire, and between the both side frames 10b and 10c. The inner surfaces of both side frame portions 10b and 10c are set to be in close contact with the left and right side surfaces of the electric wires that are lined up and down. When the length of the lower end closing frame 10e is the same as the dimension L1 and the lock claw is inserted and locked in the lock hole at the lower end through the electric wires arranged in the upper and lower rows between the side frame portions 10b and 10c, the upper and lower electric wires 4 are aligned. The both side frame portions 10b and 10c of the water stop device 1 are in a state of being tightly clamped, and the water stop device 1 can be positioned and held so as not to move with respect to the branch line 2b.

  The front and rear width L3 of each side frame portion 10b and 10c of the waterstop 1 is about 2 mm, and the vertical length L2 is made to correspond to the length of the upper and lower rows of electric wires inserted and is substantially equal to the vertical dimension of the connector 3, In the embodiment, it is 40 mm.

  As shown in FIG. 4, the water stop device 1 of the present invention having the above-described configuration includes five right-row electric wires arranged in a row in the vertical direction just before the connection portion of the branch line 2 b of the wire harness 2 to the connector 3 in the terminal region. Mount the water stop 1A on the 4R and the water stop 1B on the five left row electric wires 4L in the same manner so that the upper end connecting portion 10a covers the upper end electric wire 4, and attach the lock pawl 10f to the lock hole 10r at the lower end. Insert and close the lower ends of the waterstops 1A, 1B. In this state, the inner surfaces of the both side frame portions 10b and 10c of the water stopping devices 1A and 1B are pressed against the left and right outer surfaces of the electric wire 4, respectively.

  The wire harness 2 with the water stop 1 (1A, 1B) attached to the branch line 2b is routed in the instrument panel 50 of the automobile, the branch line 2b is wired downward, and then laterally bent at the terminal, 3 is fitted into the connector fitting portion 51 a of the electronic control unit 51. In this state, the water stop 1 (1A, 1B) attached to the laterally bent wiring portion 2b2 of the branch line 2b is arranged vertically and vertically.

  Therefore, for example, when an occupant spills water above the instrument panel 50 or rainwater blows into the instrument panel 50 when the door is opened, water drops adhere to the wire harness 2 and face downward. After passing through the outer surface of the electric wire 4 of the branch line 2b1 routed in the water, water drops are transmitted to the upper surface of the electric wire 4 at the upper end of each of the right row electric wire 4R and the left row electric wire 4L which are arranged side by side, and the lower electric wires. A water droplet is transmitted to the side surface of 4 and moves to the connector 3 side.

  Since the water stop 1 (1A, 1B) is attached to the right and left electric wires 4R and 4L of the branch line 2b immediately before the connector 3, the water droplets 60 traveling along the outer surfaces of these electric wires 4 are As shown in FIG. 5, the end faces of both side frame portions 10b and 10c are contacted and blocked. It can prevent reliably that the water droplet 60 adheres to the both-sides frame parts 10b and 10c, and the water droplet 60 is wiped off from the outer surface of an electric wire, and that the infiltration in the connector 3 arises. And the water droplet 60 adhering to the water stop tool 1A, 1B falls by its own weight.

  As described above, since the water stop device of the present invention has a simple U-shaped shape, it can be provided at a low cost and can be easily attached by covering the upper and lower rows of electric wires from above. Therefore, there is no need to make the U-turn to stop the water, the length of the electric wire required to make the U-turn can be reduced, and there is no problem that the U-turn part contacts peripheral devices. The variation in quality to be performed can be eliminated.

6 (A) to 6 (D) show a modification of the water stop device of the first embodiment.
The water stop 1-1 of the first modification shown in FIG. 6 (A) is made of a resin molded product, and is bent in the direction in which the inner surfaces of both side frame portions 10b and 10c approach each other to form a spring piece, and the both side frame portions 10b. 10c is spread, and the electric wire 4 is passed between them. After passing, the both side frame portions 10b and 10c are pressed against the outer surface of the electric wire 4. Since the water stop device 1-1 provides spring properties in the closing direction to the side frame portions 10b and 10c, it is not necessary to provide a lower end closing frame and perform lock connection.

  A water stop device 1-2 of the second modification shown in FIG. 6B is made of hard rubber such as elastomer, and the thickness (t) of both side frame portions 10b, 10c is made thicker than the resin molded product. Thereby, even if the size (electric wire diameter) of the some electric wire 4 lined up and down differs, the both-sides outer surface of each electric wire can be pressed with the both-sides frame part 10b, 10c.

  The water stop 1-3 of the 3rd modification shown in FIG.6 (C) shape | molds the flame | frame 10 2 colors with rubber | gum and resin. That is, the opposing inner surface portions 10i of the both side frame portions 10b and 10c are formed of rubber, and the outer peripheral portion 10u is formed of resin. Although the upper end connecting portion 10a is formed of resin, the both side frame portions 10b and 10c may be made of rubber on the inner peripheral side and resin on the outer peripheral side. With this configuration, since the portion that comes into contact with the electric wire is made of rubber, the amount of compression of the rubber is made different even if the diameters of the electric wires arranged in the vertical direction are different as in the water stopping device 1-2 of the second modified example. Can absorb.

  In the water stop tool 1-4 of the fourth modified example shown in FIG. 6D, two lock claws 10f1 and 10f2 are projected from the tip of the lower end closing frame 10e. The other structure is the same as the water stop tool 1 of 1st Embodiment. When the locking claw 10f1 on the front end side is locked in the lock hole 10r, the dimension between the side frame portions 10b and 10c is increased to be used for a large-diameter electric wire, and when the lock claw 10f2 is locked in the lock hole 10r, both side frame portions 10b and The size between 10c may be made small, and it may be shared for small diameter electric wires.

The water stop tool 1-5 of 2nd Embodiment is shown in FIG. 7 thru | or FIG.
The water stop 1-5 has two frames composed of an inverted U-shaped first frame 10-1 and second frame 10-2 arranged side by side in the electric wire length direction. That is, the front surface of the lower end of the side frame portion 10b of the first frame 10-1 and the rear surface of the lower end of the side frame portion 10b of the first frame 10-2 are connected by the connecting portion 10m. The first and second frames 10-1 and 10-2 are each provided with a lock hole 10r at the lower end of the side frame portion 10b, while the side frame portion 10c is provided with a lower end closing frame 10e having a lock claw 10f at the tip. Yes. As described above, the first frame 10-1 and the second frame 10-2 have substantially the same shape, and have substantially the same shape as the frame 10 of the first embodiment.

Furthermore, the eaves part 10h which protrudes in the connector side from the front surface of the upper end connection part 10a of the 2nd flame | frame 10-2 arrange | positioned at the connector side is provided. The protruding amount of the eaves portion 10h is 20 to 40 mm, and the tip of the eaves portion 10h is attached to the wire insertion side end surface 3c of the connector 3-2. Even if there is a gap between the connector 3-2 and the water stop 1-5 by the eaves part 10h, it is possible to prevent water drops falling from above the gap from adhering to the electric wire 4.
In this embodiment, as shown to FIG. 8 (A), the connector 3-2 connected to the terminal of the branch line 2b of a wire harness is made into the connector provided with ten terminal accommodating chambers 3b in the up-down direction. Therefore, the electric wires of the branch line 2b immediately before the connection with the connector are ten electric wires arranged in a vertical line.

  In the water stop 1-5 of the second embodiment, a gap is formed between the two connected first and second frames 10-1 and 10-2 in the electric wire length direction at a position immediately before connection with the connector 3. Then, the upper end connecting portions 10a are respectively placed on the upper end electric wires 4 and the both side frame portions 10b and 10c are pressed against the outer side surfaces of the respective electric wires 4 and attached to the plurality of electric wires 4 arranged in a row in the vertical direction. After covering the first and second frames 10-1 and 10-2 on the electric wire group, the both side frame portions 10b and 10c of the first and second frames 10-1 and 10-2 are respectively attached by being locked.

In the wire harness to which the water stop 1-5 is attached, as shown in FIGS. 9 (A) and 9 (B), first of all, the first frame 10-1 on the opposite side (upstream side) of the connector connection side of the electric wire 4 The water droplet 60 traveling along the outer surface is blocked by the end surface of the first frame 10-1.
The water droplet 60 that could not be blocked by rubbing through the first frame 10-1 is brought into contact with the second frame 10-2 on the connector connection side (downstream side) and blocked.
As described above, since water droplets traveling on the surface of the electric wire are blocked in two stages of the first frame 10-1 and the second frame 10-2 to prevent water from entering the connector 3, the water stop reliability is improved. Can do.

  In the water stop 1-5 of the second embodiment, the first frame 10-1 and the second frame 10-2 have the same shape, but both side frame portions 10b of the second frame 10-2 on the connector proximity side. And 10c may be narrower than the first frame 10-1. With this configuration, since the pressing force against the electric wire by the side frame portions 10b and 10c in the second frame 10-2 can be increased from the first frame 10-1, water droplets on the outer surface of the electric wire can be reliably captured and applied to the connector. Inundation can be blocked.

In addition, the eaves portion protruding from the front end of the upper end connection portion 10a of the second frame 10-2 is projected in an inverted L shape, and the top end of the vertical frame portion is abutted against the end surface of the connector housing on the electric wire insertion side. It is good also as a structure which mounts a horizontal frame part on the upper end surface of a connector housing.
In addition, you may project the eaves part which block | closes the clearance gap between a water stop and a connector from the frame upper end of the water stop of the said 1st Embodiment.

  The present invention is not limited to the above-described embodiment, and when there are two or three rows of terminal accommodating chambers arranged in the vertical direction of the connector connected to the wire harness to which the waterstop 1-5 of the second embodiment is attached, Similar to the first embodiment, two or three water stop devices 1-5 are attached to the branch line immediately before the connector connection.

The device connected to the wire harness with the water stop device of the present invention connected to the connector may be an electrical connection box such as a junction box mounted in the instrument panel, or a connecting device including a connector attached to the terminal of another wire harness. Good.
Furthermore, not only the wire harness routed in the instrument panel, but also a non-waterproof connector or a simple waterproof connector is connected to the terminal, and there is a possibility that water droplets adhering to the outer surface of the wire harness may be immersed in the connector The water stop device of the present invention can be attached immediately before the connector connection place to easily take a water stop measure.

DESCRIPTION OF SYMBOLS 1 Water stop tool 2 Wire harness 2b Branch line 3 Connector 4 Electric wire 10 Frame 10a Upper end connection part 10b, 10c Both-sides frame part 10-1 1st frame 10-2 2nd frame

Claims (7)

A water stop device to be attached to the wire group in front of the connector connection position of the wire harness terminal,
It has an inverted U-shaped frame with both side frame parts projecting downward from the left and right ends of the upper end connection part. The upper end connection part of the frame is covered on the upper end of a row of electric wires arranged vertically, and the both side frame parts are opposed to each other. The structure is such that the right and left outer surfaces of each electric wire are brought into contact with the inner surface and inserted, and the water droplets attached to the outer surface of these electric wires and transmitted to the connector are blocked by contact with both side frame portions and dropped by their own weight. A water stop device for a wire harness.   A spring property is imparted to the both side frame portions of the frame so as to be close to each other, and is held in contact with the electric wire inserted between the both side frame portions and can be positioned and held at a required position with respect to the electric wire group. The water stop tool for wire harnesses according to claim 1.   A lock hole is provided at one lower end portion of the both side frame portions, and a lower end closing frame having a lock claw inserted and locked into the lock hole is provided at the other lower end portion, and a wire group between the both side frame portions. The water stop device for a wire harness according to claim 1, wherein a lock claw is inserted and locked into the lock hole in a state of being passed, and a lower end of the both side frame portions is closed by a lower end closing frame.   4. The frame according to claim 1, wherein the frame is a resin molded product, a rubber molded product, or a two-color molded product using rubber on the inner surface side of the both side frame portions and resin on the outer surface side. The water stop tool for wire harnesses of description.   Two frames having the inverted U-shape are juxtaposed in the length direction of the electric wire, and the lower ends of one side frame portions of both side frame portions of the two frames are connected by a connecting frame. Item 10. A water stop device for a wire harness according to Item 1. A water-stop structure for a wire harness to which the water-stop device according to claim 1 is attached,
The connector connected to the terminal of the wire group of the wire harness after the wire harness is routed downward toward a connection device installed in a non-water-immersed area of the vehicle and then laterally bent at a position immediately before connection with the connection device. Are vertically oriented, and the wire group connected to the connector is arranged vertically.
A water-stop structure for a wire harness in which the water-stopper is attached to each row of electric wires lined up and down immediately before the connection portion with the connector.   The wire harness is routed in an instrument panel of an automobile, and the wire harness is connected to a vertical connector fitting portion provided in an electronic control unit (ECU) or / and a junction box installed in the instrument panel. The waterproof structure of the wire harness according to claim 6, wherein the connector is fitted without making a U-turn on the terminal side of the wire harness.

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