JP2024035853A - Grommet and wiring harness - Google Patents

Abstract

To provide a grommet and a wiring harness capable of efficiently performing manufacturing operation while making a stripping property of a grommet excellent.SOLUTION: A grommet 1 comprises: an annular waterstop part 2 which is inserted into a through hole 101 formed in a mount panel 100 and performs waterstop; closing parts 3 which are formed to project inward in a radial direction of the waterstop part 2 and are provided respectively on one side and the other side in an axial direction of the waterstop part 2; and cylinder parts 4 which are each provided on a center portion of each of the closing parts 3 on the one side and the other side and into which a wiring material W is inserted. The closing part 3 and the cylinder part 4 on one of the one side and the other side have a plurality of division parts 6 divided in a circumferential direction by a plurality of cutout parts 5 extending in the radial direction. The plurality of division parts 6 form connection parts 7 in a part of the cutout part 5 between neighboring ones of the division parts 6 on the cylinder part 4. The grommet is configured such that the neighboring ones of the division parts 6 are connected with each other by the connection part 7.SELECTED DRAWING: Figure 1

Description

The present invention relates to a grommet and a wire harness.

Conventionally, when wiring a grommet and a wire harness by passing a wiring material through a mounting panel, for example, as described in Patent Document 1, the grommet is attached to a through hole of the mounting panel, and the wiring material is attached to the grommet. It is known that the wiring material is inserted through the cable and a grommet is used to shut off water between the wiring material and the mounting panel. The grommet has a closing part and a cylindrical part formed inside a water stop part attached to the mounting panel, and allows the wiring material to be inserted into the cylindrical part. The closing part and the cylindrical part are respectively provided on one side and the other side in the axial direction with respect to the water stop part. A plurality of divided portions are formed which are divided in the circumferential direction. In this grommet and wire harness, a plurality of divided parts are formed in the closing part and the cylindrical part, so that the grommet can be easily cut out during molding.

JP2021-61680A

The grommet and wire harness described above have room for improvement in terms of improving work efficiency during wire harness manufacturing. For example, when manufacturing a wire harness, when joining a grommet and the wiring material inserted through the grommet at a cylindrical part, tape is wrapped around the cylindrical part and also around the wiring material extending from the cylindrical part. Therefore, it is possible to integrate the cylindrical part and the wiring material. In this case, if the cylindrical portion is divided in the circumferential direction, it is necessary to support the plurality of cylindrical portions together at the center on the wiring material side and wrap the tape around them. At this time, it is not easy to support the plurality of cylindrical parts together, which poses an obstacle to improving the efficiency of manufacturing work.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a grommet and a wire harness that can be manufactured efficiently while improving the mold removal properties of the grommet.

That is, the grommet according to the present invention includes an annular water stopper that is inserted into a through hole formed in a mounting panel to stop water, and an annular water stopper that is formed to extend inward in the radial direction of the waterstopper, and that is formed so as to extend inwardly in the radial direction of the waterstopper. Comprising a closing part provided on one side and the other side in the direction, and a cylindrical part provided in the center of the closing part on the one side and the other side, through which the wiring material is inserted, and on either one side or the other side. One of the closing parts and the cylindrical part has a plurality of divided parts divided in the circumferential direction by a plurality of notches extending in the radial direction, and the plurality of divided parts are divided into adjacent divided parts and divided parts in the cylindrical part. A connecting portion is formed in a part of the notch between the two, and the adjacent divided portions are connected by the connecting portion.

According to the grommet and wire harness according to the present invention, it is possible to perform manufacturing work efficiently while improving the die-cutting properties of the grommet.

FIG. 1 is a perspective view of a grommet and a wire harness according to an embodiment. FIG. 2 is a perspective view of a grommet and a wire harness according to the embodiment. FIG. 3 is a sectional view of the grommet along III-III in FIG. 2. FIG. 4 is a view of the grommet in FIG. 1 viewed from the axial direction. FIG. 5 is an enlarged view of the grommet of FIG. 1. FIG. 6 is an explanatory diagram of the manufacturing operation of the wire harness shown in FIG. 1. FIG. 7 is an explanatory diagram of the manufacturing operation of the wire harness shown in FIG. 1.

Embodiments according to the present invention will be described in detail below based on the drawings. Note that the present invention is not limited to this embodiment. Furthermore, the constituent elements in the embodiments described below include those that can be easily replaced by those skilled in the art, or those that are substantially the same.

[Embodiment]
1 and 2 are perspective views of a grommet and a wire harness according to the present embodiment, and FIG. 3 is a cross-sectional view of the grommet along III-III in FIG. 2. FIG. 4 is a diagram of the grommet according to the present embodiment viewed from the axial direction. FIG. 5 is an enlarged view of the grommet according to the present embodiment, and is an explanatory diagram of the notch, the dividing portion, and the connecting portion in the grommet. 6 and 7 are explanatory diagrams of the manufacturing work of the wire harness according to the present embodiment.

As shown in FIGS. 1, 2, and 3, the grommet 1 of this embodiment is incorporated into a wire harness WH that is wired in a vehicle or the like. Here, the wire harness WH is, for example, a bundle of a plurality of wiring materials W used for power supply and signal communication in order to connect each device mounted on a vehicle, and a plurality of wiring materials W using connectors etc. The wiring material W is connected to each device. The wire harness WH includes a wiring material W having conductivity and a grommet 1 provided on the wiring material W and into which the wiring material W is inserted. The wire harness WH may further include various components such as a corrugated tube, a resin tape, an exterior member such as a protector, an electrical connection box, and a fixture. The wiring material W is composed of, for example, a metal rod, an electric wire, an electric wire bundle, or the like. A metal rod is a rod-shaped member that is electrically conductive and covered on the outside with an insulating coating. An electric wire has a conductor part (core wire) made of a plurality of conductive metal wires, and the outside thereof is covered with an insulating covering part. The wire bundle is a bundle of the wires. The wire harness WH bundles and aggregates a plurality of wiring materials W, and various devices are electrically connected to each other via connectors and the like provided at the terminals of the bundled wiring materials W.

The grommet 1 is used to route the wiring material W through the through hole 101 formed in the mounting panel 100 to which it is attached, across two spaces partitioned by the mounting panel 100 as a boundary. This is applied to the through hole 101. The mounting panel 100 is, for example, a metal plate that constitutes the body of a vehicle, and the through hole 101 passes through the mounting panel 100 along the thickness direction. The two spaces defined by the mounting panel 100 are typically an interior space (for example, a cabin) and a space outside the vehicle (for example, an engine compartment). The grommet 1 is assembled into the through hole 101 in a state in which the wiring material W of the wire harness WH is inserted therethrough and is sheathed around the wiring material W, thereby allowing the wiring material W passing through the through hole 101 to pass through the grommet 1. It protects the through hole 101 and also makes the through hole 101 waterproof. In addition to waterproofing the through hole 101, the grommet 1 also has functions such as dustproofing and sound insulation. Hereinafter, the configuration of the grommet 1 will be described in detail with reference to each figure.

In addition, in the drawings, the wiring material W and the mounting panel 100 are omitted by the two-dot chain line, or the wiring material W and the mounting panel 100 are not shown. In FIGS. 1 and 2, the mounting panel 100 is shown to have a rectangular shape for convenience of illustration, but it is formed into a shape that corresponds to the structure of the vehicle. In addition, in the following description, among the first direction, second direction, and third direction that intersect with each other, the first direction is referred to as "axial direction X", and the second direction is referred to as "width direction Y", The third direction is referred to as the "height direction Z." The axial direction X, the width direction Y, and the height direction Z are typically orthogonal to each other. Here, the axial direction X corresponds to the thickness direction of the mounting panel 100 described above, and corresponds to the direction in which the wiring material W and the grommet 1 are inserted into the through hole 101. In other words, the axial direction X is a direction along the extending direction of the wiring material W inserted through the grommet 1. The width direction Y and the height direction Z correspond to the extending direction of the mounting panel 100. Here, in order to make the explanation easier to understand, the explanation will be made assuming that the wiring material W is wired in a straight line along the axial direction X, but the present invention is not limited to this. In this state, the axial direction X may be the bent direction, and the grommet 1 and the wiring material W may be provided with some parts bent. Moreover, each direction used in the following description is explained as a direction in a state where the grommet 1 is assembled to the mounting panel 100 unless otherwise specified. Further, a central axis C passing through the center of the through hole 101 is perpendicular to the plate surface of the mounting panel 100 and extends along the axial direction X. The direction perpendicular to the central axis C is called the radial direction, the side away from the central axis C is called the radially outer side, and the side approaching the center axis C is called the radially inner side.

Specifically, as shown in FIGS. 1, 2, and 3, the grommet 1 of this embodiment has the wiring material W inserted therein along the axial direction This is a sealing member that can shut off water between the two. The grommet 1 includes a water stop part 2, a closing part 3, and a cylindrical part 4, which are integrally formed as an elastic body. The grommet 1 is formed of an insulating elastic resin material (eg, ethylene-propylene-diene rubber (EPDM)) having low rigidity and high flexibility, such as rubber or thermoplastic elastomer.

The water stop portion 2 is a portion that fits into the through hole 101 to shut off water in the through hole 101, and into which the wiring material W is inserted along the axial direction X. A closing portion 3 and a cylindrical portion 4 are provided inside the water stop portion 2 in the radial direction. The closing part 3 is formed to protrude inward in the radial direction of the water stopping part 2, and includes a first closing part 31 provided on one side of the water stopping part 2 in the axial direction and a second closing part 31 provided on the other side of the water stopping part 2 in the axial direction. It has a section 32. The cylindrical portion 4 is a cylindrical portion provided at the center of the closing portion 3 through which the wiring material W is inserted. The cylindrical portion 4 includes a first cylindrical portion 41 provided on one side of the water stop portion 2 in the axial direction, and a second cylindrical portion 42 provided on the other side in the axial direction.

The first closing portion 31 and the second closing portion 32 are each formed in an annular plate shape with a central axis C along the axial direction X. The first closing portion 31 and the second closing portion 32 are spaced apart along the axial direction X, face each other on one side and the other side of the axial direction X, and are integrated at the water stop portion 2 . Here, the water stop portion 2 is an outer circumferential portion provided in an annular shape at the end portion of the first closing portion 31 and the second closing portion 32 located on the outside in the radial direction (direction orthogonal to the central axis C). The first closing part 31 and the second closing part 32 extend inward in the radial direction of the water stopping part 2 and close the annular shape of the water stopping part 2 on one side and the other side in the axial direction are placed respectively. At least one of the first closing portion 31 and the second closing portion 32 (here, the second closing portion 32) is formed in a shape that bulges outward along the axial direction X. The first closing part 31 and the second closing part 32 are integrated by the water stop part 2 and are formed into a dome shape with a hollow interior as a whole. A first cylindrical portion 41 is connected to the first closing portion 31 on a surface opposite to the second closing portion 32 side in the axial direction X. A second cylindrical portion 42 is connected to the second closing portion 32 on a surface opposite to the first closing portion 31 side in the axial direction X.

Here, the second closing portion 32 is formed with a protrusion 321 that protrudes outward (on the opposite side of the axial direction X from the first closing portion 31). The protrusion 321 includes an annular protrusion 321A formed in an annular shape around the central axis C so as to surround the base end of the second cylindrical part 42, and a protrusion 321A that extends radially outward from the annular protrusion 321A and extends from the center. It has a plurality of radial protrusions 321B provided around the axis C and positioned radially. In this embodiment, the radial protrusions 321B are located at eight locations at equal intervals in the circumferential direction. Such a protrusion 321 improves the strength of the second closing part 32 and suppresses deformation.

The water stop portion 2 is formed to integrate a first closing portion 31 and a second closing portion 32 therebetween. The water stop portion 2 is formed radially outward from the position where the wall thickness changes with respect to the first closing portion 31. The water stop part 2 has a fitting groove part 21 and a lip part 22. The fitting groove 21 is formed as an annular groove centered on the central axis C. When the main body 10 is fitted into the through-hole 101, the edge forming the through-hole 101 in the mounting panel 100 is fitted into the fitting groove 21.

The lip portion 22 is a pleated portion formed along the fitting groove portion 21 . Here, the lip portion 22 is formed in an annular shape along the fitting groove 21 at the end of the fitting groove 21 on the first closing portion 31 side. That is, the lip portion 22 is formed in the fitting groove portion 21 in an annular shape centered on the central axis C. When the edge of the through hole 101 is fitted into the fitting groove 21, the lip portion 22 contacts the surface of the edge (here, the surface on the first closing portion 31 side) and stops between the edge and the surface. Water. The lip portion 22 is configured to tightly adhere to the surface of the edge forming the through hole 101 by elastic deformation and seal the entire periphery of the through hole 101 .

The first cylindrical part 41 and the second cylindrical part 42 are integrally formed in a cylindrical shape with the main body part 10, and are parts into which the wiring material W is inserted along the axial direction X.

The first cylindrical portion 41 is formed to protrude from the first closing portion 31 along the axial direction X to the other side (the side opposite to the second closing portion 32). The first cylindrical portion 41 is formed in a cylindrical shape centered on the central axis C, and extends along the axial direction X. The first cylindrical portion 41 is formed into a cylindrical shape having a smaller diameter than the first closing portion 31 . The first cylindrical portion 41 has an open end portion on the other side in the axial direction X, and a proximal end portion on one side thereof is connected to the first closed portion 31 . The first cylindrical portion 41 is connected to penetrate through the first closing portion 31 at a substantially central position in the width direction Y and the height direction Z. Here, the first cylindrical portion 41 is formed such that the diameter becomes larger as the proximal end portion on the first closing portion 31 side in the axial direction X approaches the first closing portion 31 . The first cylindrical portion 41 has a plurality of lip portions 41A formed on its inner peripheral surface. The plurality of lip portions 41A are fold-shaped water stop portions each formed in an annular shape along the circumferential direction (direction around the central axis C), and are located at intervals along the axial direction X. Each lip portion 41A comes into contact with the outer surface of the wiring material W with the wiring material W inserted thereinto to shut off water between the lip portions 41A and the outer surface. Each lip portion 41A is configured to tightly adhere to the outer surface of the wiring material W by elastic deformation and seal the entire circumference of the wiring material W.

The second cylindrical portion 42 is formed to protrude from the second closing portion 32 to one side (the opposite side to the first closing portion 31) along the axial direction X. The second cylindrical portion 42 is formed in a cylindrical shape centered on the central axis C, and extends along the axial direction X. The second cylindrical portion 42 is formed in a cylindrical shape with a diameter smaller than that of the second closing portion 32 . The second cylindrical portion 42 has an open distal end on one side in the axial direction X, and a proximal end on the other side that penetrates and is connected to the second closing portion 32 . The second cylindrical portion 42 is connected to a substantially central position of the second closing portion 32 in the width direction Y and the height direction Z. Here, the second cylindrical portion 42 is formed such that the diameter becomes larger as the proximal end portion on the second closing portion 32 side in the axial direction X approaches the second closing portion 32 .

In the grommet 1 , the internal spaces of the water stop part 2 , the first closing part 31 , the second closing part 32 , the first cylindrical part 41 , and the second cylindrical part 42 function as the insertion space 11 . The insertion space 11 is a space through which the wiring material W is inserted, and is continuous along the axial direction X across the first cylindrical part 41, the water stop part 2, and the second cylindrical part 42. In the grommet 1, the wiring material W is inserted along the axial direction be done.

After the grommet 1 is attached to the wiring material W by inserting the wiring material W into the insertion space 11, the first cylindrical part 41 or the second cylindrical part 42 penetrates together with the end of the wiring material W. It is inserted into the hole 101. Then, the grommet 1 is assembled to the mounting panel 100 by fitting the water stop part 2 into the through hole 101 so that the edge of the through hole 101 fits into the water stop part 2 . In this state, the grommet 1 is in close contact with the surface of the peripheral edge of the through hole 101 while the lip portion 22 is elastically deformed, thereby sealing the entire peripheral edge of the through hole 101. Note that the grommet 1 is constructed by winding tape or the like over the wiring material W inserted into the insertion space 11, the first cylindrical portion 41, the second cylindrical portion 42, and the wiring material W. The openings of the first cylindrical portion 41 and the second cylindrical portion 42 may be watertight.

In this way, the grommet 1 and the wire harness WH are configured such that when the water stop portion 2 fits into the through hole 101 formed in the mounting panel 100, water is cut off from the through hole 101, and the wiring material W is inserted inside. be done.

As shown in FIGS. 4 and 5, the second closing portion 32 and the second cylindrical portion 42 have a plurality of divided portions 6 that are divided in the circumferential direction by a plurality of notches 5 that extend in the radial direction. The cut portion 5 is a slit formed radially from the central axis C in the second closing portion 32 and the second cylindrical portion 42 . The cut portion 5 penetrates the front and back sides of the second closing portion 32 and the second cylindrical portion 42, and extends from the second cylindrical portion 42 to the position of the water stop portion 2. For example, four cut portions 5 are formed at equal intervals in the circumferential direction, and divide the second closing portion 32 and the second cylindrical portion 42 into four divided portions 6. By dividing the second closing portion 32 and the second cylindrical portion 42, ease of demolding when molding the grommet 1 is improved. That is, when die cutting is performed, the second closing portion 32 and the second cylindrical portion 42 can be opened radially outward, and the core portion of the mold for molding the insertion space 11 can be smoothly pulled out. be able to.

The plurality of divided portions 6 form a connecting portion 7 in a part of the notch 5 between adjacent divided portions 6 in the second cylinder portion 42 . The connecting portion 7 is formed in a part of the notch 5 between the adjacent divided portions 6 , and connects the adjacent divided portions 6 . The divided portion 6 in which the connecting portion 7 is formed and the divided portion 6 are integrated through the connecting portion 7. In FIG. 4, connecting portions 7 are formed for two of the four notches 5 that face each other with the axis (center axis C) of the water stop portion 2 interposed therebetween. The connecting portion 7 is formed, for example, at the tip of the second cylindrical portion 42 . In other words, the connecting portion 7 connects the adjacent divided portions 6 at the tip end of the second cylindrical portion 42 . Here, the position of the distal end of the second cylindrical part 42 may be the most extreme position of the second cylindrical part 42, or a position on the distal side of the center position of the second cylindrical part 42 in the axial direction X. There may be. FIG. 5 shows a case where the connecting portion 7 is formed at the most extreme position of the second cylindrical portion 42. As shown in FIG. By connecting the divided parts 6 by the connecting part 7, the divided second cylindrical part 42 can be easily bundled toward the center side where the wiring material W is located during manufacturing work. The notch 5 is formed from the second closing portion 32 to the position of the connecting portion 7 in the second cylindrical portion 42 between adjacent divided portions 6 where the connecting portion 7 is formed. Even when the connecting portion 7 is formed in a part of the notch 5, the mold removal properties during molding of the grommet 1 are good. That is, the second closing part 32 and the second cylindrical part 42 are divided in the circumferential direction by a plurality of notches 5 extending in the radial direction, and the notches 5 connected by the connecting part 7 are a part thereof. By opening the second closing portion 32 and the second cylindrical portion 42 radially outward, the core portion of the mold for molding the insertion space 11 can be smoothly pulled out.

Next, a method for joining the grommet 1 and a method for manufacturing the wire harness WH according to the present embodiment will be described.

As shown in FIG. 6, the wiring material W is inserted into the grommet 1, the wiring material W and the grommet 1 are joined, and the wire harness WH is manufactured. For example, a tape T is used to join the wiring material W and the grommet 1. A tape T is wound around the second cylindrical part 42 of the grommet 1, and the tape T is also wound around the wiring material W extending from the second cylindrical part 42. The materials W are integrated.

In this manufacturing operation, in order to wrap the tape T around the second cylindrical part 42 and the wiring material W, it is necessary to bundle the divided second cylindrical part 42 to a central position where the wiring material W is located. . At this time, as shown in FIG. 7, since a part of the divided part 6 of the second cylindrical part 42 is connected by the connecting part 7, it can be easily bundled to the wiring material W side. For example, when four divided parts 6 are connected by two connecting parts 7 to form two divided bodies, the two divided bodies (four divided parts 6) can be easily moved to the wiring material W side with one hand. Can be bundled. In other words, it is possible to pull the four divided parts 6 toward the wiring material W side and bundle them with one hand, and wrap the tape T with the other hand. Manufacturing work can be performed efficiently.

Here, if the second cylindrical part 42 is not provided with the connecting part 7, it is necessary to bundle the four divided parts 6 on the wiring material W side, but it is difficult to bundle them with one hand. That is, it is difficult to pull the four divided parts 6 toward the wiring material W with one hand, and the four divided parts 6 must be pulled toward the wiring material W and bundled using both hands. Then, while holding and supporting the bundled divided parts 6 in one hand, the tape T is wrapped around them to perform the joining operation. That is, compared to the grommet 1 and the wire harness WH according to the present embodiment, the number of work steps is increased, and the work of joining the wiring material W and the grommet 1 and the work of manufacturing the wire harness WH cannot be performed efficiently. Dividing the closing part 3 and the cylindrical part 4 in this manner improves the ease of demolding during molding, but makes it difficult to perform manufacturing operations efficiently. On the other hand, in the grommet 1 and the wire harness WH according to the present embodiment, by connecting the divided portions 6 with the connecting portions 7, it is possible to improve the mold removal properties during molding and to efficiently perform the manufacturing work. It is.

As explained above, according to the grommet 1 and the wire harness HW according to the present embodiment, the second closing part 32 and the second cylindrical part 42 are divided in the circumferential direction. becomes easier. In addition, since a part of the divided parts 6 are connected by the connecting part 7, the divided second cylindrical part 42 and the wiring material W can be easily joined. For this reason, the grommet 1 and the wire harness HW can be manufactured efficiently while making the grommet 1 easy to demold.

Furthermore, in the grommet 1 and the wire harness HW according to the present embodiment, the connecting part 7 is formed at the distal end of the second cylindrical part 42, so that the distal end of the divided second cylindrical part 42 can be connected at the time of wiring. It can be easily bundled and manufacturing operations can be carried out efficiently.

Moreover, the grommet 1 and the wire harness HW according to the present embodiment have four divided parts 6 connected by two connecting parts 7 to form two divided bodies. Therefore, when arranging the cables, the divided parts 6 can be pulled together and bundled with one hand, and the manufacturing work can be easily performed.

Note that the grommet 1 and the wire harness WH according to the embodiment of the present invention described above are not limited to the embodiment described above, and various changes can be made within the scope of the claims. Moreover, the grommet 1 and the wire harness WH according to the present embodiment may be configured by appropriately combining the components of the embodiment and the modified examples described above.

In the embodiment described above, the case where the second closing part 32 and the second cylindrical part 42 are divided into four parts has been described, but it is also possible to divide the second closing part 32 and the second cylindrical part 42 into three or four or more parts. Good too. Even in this case, by connecting the divided portions 6 with the connecting portions 7, the same effects as in the embodiment described above can be obtained.

1 Grommet 2 Water stop part 3 Closing part 4 Cylindrical part 5 Notch part 6 Dividing part 7 Connecting part 31 First closing part 32 Second closing part 41 First cylinder part 42 Second cylinder part 100 Mounting panel 101 Through hole C Center Axis line X Axial direction W Wiring material WH Wire harness

Claims (4)

an annular water stop part that is inserted into a through hole formed in the mounting panel to stop water;
a closing portion that is formed to protrude inward in the radial direction of the water stop portion and is provided on one side and the other side in the axial direction of the water stop portion, respectively;
A cylindrical part provided at the center of the closing part on one side and the other side, and through which the wiring material is inserted,
The closing part and the cylindrical part on one side and the other side have a plurality of division parts that are divided in the circumferential direction by a plurality of notches extending in the radial direction,
The plurality of divided parts form a connecting part in a part of the notch between the adjacent divided parts in the cylinder part, and the connecting parts connect the adjacent divided parts and the divided parts. parts are connected,
grommet. The connecting portion is formed at the tip of the cylindrical portion,
Grommet according to claim 1. The plurality of divided parts are divided into four divided parts by the four cut parts,
The connecting portion is formed in the two cut portions facing each other across the axis of the water stop portion.
The grommet according to claim 1 or 2. A wiring material having conductivity;
A grommet provided on the wiring material,
The grommet is
an annular water stop part that is inserted into a through hole formed in the mounting panel to stop water;
a closing portion that is formed so as to protrude inward in the radial direction of the water stop portion and is provided on one side and the other side in the axial direction of the water stop portion, respectively;
A cylindrical part provided at the center of the closing part on one side and the other side and through which the wiring material is inserted,
The closing part and the cylindrical part on one side and the other side have a plurality of divided parts that are divided in the circumferential direction by a plurality of notches extending in the radial direction,
The plurality of divided parts form a connecting part in a part of the notch between the adjacent divided parts in the cylinder part, and the connecting parts connect the adjacent divided parts and the divided parts. parts are connected,
wire harness.

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