Pipe Harness

Abstract

To provide a pipe harness that allows for a simplified structure.SOLUTION: A pipe harness 1 includes an electric wire 13, a pipe 14 through which the electric wire 13 is inserted, and a sealing portion 15 that ensures sealing inside the pipe 14 by being inserted into the electric wire 13 and being attached to the inside of the pipe 14. The position of the sealing portion 15 is fixed by a position fixing portion 21 formed by, for example, recessing the pipe 14 by swaging or the like. The sealing portion 15 has a shape in which a plurality of large diameter portions 17 and small diameter portions 18 are alternately arranged in the thickness direction.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to a pipe harness. [Background technology]

[0002] Conventionally, Patent Document 1 describes a pipe harness formed by inserting electric wires constituting a wire harness into a pipe. The reason for passing the electric wires through the pipe in this manner is to protect the electric wires by the pipe when the wire harness is routed under the floor of a vehicle such as an automobile. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-223342 A Summary of the Invention [Problem to be solved by the invention]

[0004] In this type of pipe harness, a measure has been devised to seal the pipe with a rubber plug or the like to ensure waterproof sealing inside the pipe. In this sealing structure, for example, a rubber plug is attached to the pipe and the electric wire is passed through a hole in the center of the rubber plug. However, in this sealing structure, a separate member such as a retainer is required to fix the rubber plug, which causes problems of an increase in the number of parts and an increase in cost.

[0005] Therefore, an object of the present invention is to provide a pipe harness that allows for a simplified structure. [Means for solving the problem]

[0006] The pipe harness of the present disclosure comprises an electric wire, a pipe through which the electric wire is inserted, a sealing portion through which the electric wire is inserted and attached to the inside of the pipe to ensure sealing within the pipe, and a position fixing portion provided on at least the pipe opening side on both sides in a thickness direction of the sealing portion attached to the pipe, and fixing the sealing portion at an attachment position, and the sealing portion has a shape in which multiple large diameter portions and small diameter portions are alternately arranged in the thickness direction of the sealing portion.

[0007] The pipe harness of the present disclosure comprises an electric wire, a pipe through which the electric wire is inserted, a sealing portion through which the electric wire is inserted and attached to the inside of the pipe to ensure sealing within the pipe, and a position fixing portion provided at a position on the pipe corresponding to a thicknesswise middle portion of the sealing portion attached to the pipe and fixing the sealing portion at the attachment position, and the sealing portion has a shape in which multiple large diameter portions and small diameter portions are alternately arranged on both thicknesswise sides of a recess corresponding to the position fixing portion. Effect of the Invention

[0008] According to the present disclosure, it is possible to provide a pipe harness that allows for a simplified structure. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram showing a pipe harness according to an embodiment. [Diagram 2] FIG. 2 is a schematic perspective view showing an end portion of the pipe harness. [Diagram 3] FIG. 3 is a schematic cross-sectional view showing an end portion of a pipe harness. [Figure 4] FIG. 4 is a schematic side view showing the entire pipe harness. [Diagram 5] 5(a) and 5(b) are manufacturing procedure diagrams showing an outline of the primary processing. [Figure 6] 6(a) and 6(b) are explanatory diagrams showing the procedure for attaching the sealing portion and the electric wires. [Figure 7]FIG. 7 is an explanatory diagram showing an outline of the secondary processing. [Figure 8] FIG. 8 is a schematic cross-sectional view showing an end portion of a pipe harness according to another embodiment. [Figure 9] FIG. 9 is a schematic cross-sectional view for explaining an end portion of a pipe harness according to another embodiment. [Figure 10] FIG. 10 is a schematic cross-sectional view for explaining an end portion of a pipe harness according to another embodiment. [Figure 11] FIG. 11 is a schematic cross-sectional view showing an end portion of a pipe harness according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] [Description of the embodiments of the present disclosure] First, the embodiments of the present disclosure will be listed and described. The pipe harness of the present disclosure includes: [1] The device comprises an electric wire, a pipe through which the electric wire is inserted, a sealing portion through which the electric wire is inserted and attached to the inside of the pipe to ensure sealing within the pipe, and a position fixing portion provided on at least the pipe opening side on both thickness direction sides of the sealing portion attached to the pipe, and fixing the sealing portion at an attachment position.

[0011] According to this configuration, the sealing portion attached to the pipe is fixed to the pipe by the position fixing portion integrally formed with the pipe, so that the sealing portion can be fixed to the pipe without using a separate member, thereby simplifying the structure of the pipe harness.

[0012] [2] The device comprises an electric wire, a pipe through which the electric wire is inserted, a sealing portion through which the electric wire is inserted and attached to the inside of the pipe to ensure sealing within the pipe, and a position fixing portion provided at a position on the pipe corresponding to a thickness-wise middle portion of the sealing portion attached to the pipe, and fixing the sealing portion at the attachment position.

[0013] According to this configuration, the sealing portion attached to the pipe is fixed to the pipe by the position fixing portion integrally formed with the pipe, so that the sealing portion can be fixed to the pipe without using a separate member. This simplifies the structure of the pipe harness. Furthermore, since the position fixing portion is provided at a position corresponding to the middle portion of the sealing portion in the thickness direction, the sealing portion can be fixed by the single position fixing portion so as not to move in both the thickness direction of the sealing portion and the axial direction of the pipe.

[0014] [3] The position fixing portion is preferably a protrusion formed by forming a recess on the outer peripheral surface of the pipe such that the inner peripheral surface of the pipe protrudes. With this configuration, the position fixing portion can be made to have a simple shape due to the recess.

[0015] [4] It is preferable that the inner diameter of the protruding portion is smaller than the outer diameter of the sealing portion. With this configuration, it is possible to firmly bring the sealing portion into contact with the position fixing portion in the pipe axial direction, thereby ensuring high sealing performance.

[0016] [5] It is preferable that the position fixing portion is formed around the entire circumference of the pipe. With this configuration, it is possible to ensure a large contact surface between the sealing portion and the position fixing portion, which further contributes to ensuring high sealing performance.

[0017] [6] It is preferable that the position fixing part includes a first position fixing part located inside the axial direction of the pipe and a second position fixing part located outside the axial direction of the pipe, and the sealing part is disposed between the first position fixing part and the second position fixing part. With this configuration, it is possible to sandwich the sealing part between the first position fixing part and the second position fixing part, so that the sealing part can be firmly fixed in the pipe axial direction.

[0018] [7] It is preferable that the first position fixing portion and the second position fixing portion are formed in the same shape. With this configuration, both the first position fixing portion and the second position fixing portion can be formed by the same manufacturing method, and therefore they can be formed easily.

[0019] [8] It is preferable that the distance between the first and second position fixing parts is equal to or smaller than the thickness of the sealing part. This configuration makes it possible to firmly fix the sealing part between the first and second position fixing parts, which further contributes to ensuring high sealing performance.

[0020] [9] It is preferable that a recess is formed on the outer peripheral surface of the intermediate portion in the thickness direction of the sealing portion, into which the position fixing portion fits before the sealing portion is attached to the inside of the pipe. According to this configuration, the position fixing portion fits into the recess formed on the outer peripheral surface of the intermediate portion in the thickness direction of the sealing portion, so that the sealing portion can be firmly fixed so as not to move in either axial direction of the pipe.

[0021]

[10] It is preferable that the sealing portion has a constant outer diameter when no external force is applied. With this configuration, the shape of the sealing portion is simple and can be easily manufactured.

[11] The pipe is preferably a metal pipe. With this configuration, a part of the metal pipe can be used as the position fixing part, and the position fixing part can be made of metal and have high strength.

[0022] [Details of the embodiment of the present disclosure] Specific examples of the pipe harness of the present disclosure will be described below with reference to the drawings. Note that the present invention is not limited to these examples, but is indicated by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. In each drawing, for convenience of explanation, some of the configuration may be exaggerated or simplified. Also, the dimensional ratios of each part may differ from the actual ones.

[0023] As shown in FIG. 1, the pipe harness 1 is mounted on a vehicle 2 such as a fuel cell vehicle. The vehicle 2 is mounted with a fuel tank 4 that stores fuel for operating a fuel cell 3. The fuel tank 4 is connected to the fuel cell 3 via piping 5, and stores, for example, ethanol or hydrogen as fuel. The fuel tank 4 supplies the fuel therein to the fuel cell 3 via piping 5. The fuel cell 3 generates power by causing a chemical reaction of the fuel. When ethanol is used as fuel, a reformer may be provided between the fuel cell 3 and the fuel tank 4 to chemically change the ethanol into, for example, hydrogen.

[0024] The fuel cell 3 is connected to an inverter 8 via a pipe harness 1 attached to the vehicle body. The inverter 8 is connected to a motor 9, which serves as a drive source for the vehicle 2, via multiple wiring 10. The inverter 8 converts the voltage generated by the fuel cell 3 to a predetermined value and outputs the converted voltage to the motor 9. The motor 9 rotates by the voltage input from the inverter 8, and provides propulsion force for the vehicle 2 in the traveling direction.

[0025] 2, the pipe harness 1 includes an electric wire 13 and a pipe 14 through which the electric wire 13 is inserted. The electric wire 13 is housed in the pipe 14 and is exposed from an end of the pipe 14. The pipe 14 is preferably a metal pipe, for example, and is formed from a material such as aluminum or copper.

[0026] As shown in Fig. 3, the pipe harness 1 includes a sealing portion 15 that ensures sealing performance inside the pipe 14. The electric wire 13 is inserted through the sealing portion 15, and the sealing portion 15 is attached to the inside of the pipe 14. The electric wire 13 is inserted through a hole 16 that is provided at the center of the sealing portion 15 in the radial direction (Z direction in Fig. 3) while being in close contact with the hole 16. The sealing portion 15 is preferably, for example, a rubber plug. The outer periphery of the sealing portion 15 is formed into a shape in which a plurality of large diameter portions 17 and small diameter portions 18 are alternately arranged in the thickness direction (Y direction in Fig. 3).

[0027] As shown in Figs. 2 and 3, the pipe harness 1 includes a position fixing portion 21 that fixes the sealing portion 15 at an attachment position within the pipe 14. The position fixing portion 21 is provided at least on the pipe opening 22 side on both sides in the thickness direction (both sides in the Y-axis direction in Fig. 3) of the sealing portion 15 attached within the pipe 14. In this example, a pair of position fixing portions 21 is provided on both sides in the thickness direction so as to sandwich the sealing portion 15 therebetween. The position fixing portion 21 in this example includes a first position fixing portion 21a located on the axial inner side of the pipe 14 and a second position fixing portion 21b located on the axial outer side of the pipe 14. The sealing portion 15 is disposed between the first position fixing portion 21a and the second position fixing portion 21b.

[0028] The position fixing portion 21 is a protrusion 23 formed by forming a recess in the outer peripheral surface of the pipe 14 so that the inner peripheral surface of the pipe 14 protrudes. The position fixing portion 21, i.e., the protrusion 23, is formed on the entire circumferential circumference of the pipe 14. The inner diameter W1 of the protrusion 23 is formed smaller than the outer diameter W2 of the sealing portion 15. The first position fixing portion 21a and the second position fixing portion 21b are formed in the same shape. The distance Wa between the first position fixing portion 21a and the second position fixing portion 21b is formed to be the same as or smaller than the thickness Wb of the sealing portion 15.

[0029] 4, a set of a sealing portion 15 and a position fixing portion 21 is provided on each end of a pipe 14. In the pipe harness 1, one end of an electric wire 13 is electrically connected to, for example, a fuel cell 3, and the other end of the electric wire 13 is electrically connected to, for example, an inverter 8.

[0030] The operation of this embodiment will be described. As shown in Figures 5(a) and (b), when the position fixing portion 21 is formed in the pipe 14, a jig 29 capable of forming a recess in the pipe 14 is used. The jig 29 is preferably a tool capable of forming the position fixing portion 21 in the pipe 14 by, for example, swaging. The jig 29 in this example includes a jig body 30, a protrusion 31 that forms a recess in the outer circumferential surface of the pipe 14, and one or more rollers 32 (two in this example) that guide the rotation of the jig 29 in the pipe circumferential direction (the direction of arrow B in Figure 5(b)) relative to the pipe 14. The jig 29 may be either a manual type that is rotated by an operator himself, or an electric type that is rotated automatically by an actuator.

[0031] 5(a), when forming the position fixing portion 21 on the pipe 14, first, as a primary process, the pipe 14 is set in a fitting portion 33 recessed in a jig body 30, and a protrusion 31 of a jig 29 is positioned at a location on the pipe 14 where the first position fixing portion 21a is to be formed. During this setting, a roller 32 is in contact with the outer circumferential surface of the pipe 14, and the protrusion 31 is pressed firmly against a location on the outer circumferential surface of the pipe 14 where the first position fixing portion 21a is to be formed.

[0032] Then, as shown in Fig. 5(b), after setting the jig 29 on the pipe 14, the jig 29 is rotated in the circumferential direction of the pipe 14 (the direction of the arrow B1 in Fig. 5(b)) while applying pressure to the outer circumferential surface of the pipe 14 with the protrusions 31, thereby recessing the first position fixing portion 21a into the pipe 14. The number of rotations may be either one revolution or multiple revolutions. In this way, by rotating the jig 29 while the outer periphery of the pipe 14 is pressed by the protrusions 31, the shape of the pipe 14 is changed circumferentially, and the protrusions 23 serving as the first position fixing portions 21a are recessed into the pipe 14.

[0033] 6(a), after the first position fixing portion 21a is formed in the pipe 14, the sealing portion 15 is attached inside the pipe 14. The sealing portion 15 is attached by being pushed in until it reaches a position where it contacts the first position fixing portion 21a. The sealing portion 15 is also attached so as to be in close contact with the inner peripheral surface of the pipe 14.

[0034] As shown in Fig. 6(b), the electric wire 13 is inserted into the sealing part 15 attached to the pipe 14. In this example, the electric wire 13 is inserted into the hole 16 formed in the center of the sealing part 15. It is preferable that the electric wire 13 is attached in a state where it is in close contact with the hole of the sealing part 15 without any gaps.

[0035] As shown in Fig. 7, after the sealing portion 15 is attached to the pipe 14, a second position fixing portion 21b is formed on the pipe 14 as a secondary process, thereby positioning the sealing portion 15 on the pipe 14. In this example, the second position fixing portion 21b is formed on the pipe 14 by the same method as when forming the first position fixing portion 21a. When the sealing portions 15 are attached to both ends of the pipe 14, the sealing portion 15 is also attached and fixed to the other end according to the same procedure. In this manner, the electric wire 13 and the sealing portion 15 are attached to the pipe 14.

[0036] The effects of this embodiment will be described. (1) Pipe harness 1 includes an electric wire 13, a pipe 14 through which electric wire 13 is inserted, a sealing portion 15 through which electric wire 13 is inserted and attached to the inside of pipe 14 to ensure sealing within pipe 14, and a position fixing portion 21 provided on at least the pipe opening 22 side on both thickness-wise sides (Y-axis direction in FIG. 3 ) of sealing portion 15 attached within pipe 14 and fixing sealing portion 15 at the attachment position.

[0037] According to the configuration of this example, the sealing portion 15 attached to the pipe 14 is fixed to the pipe 14 by the position fixing portion 21 integrally formed with the pipe 14, so that it is possible to fix the sealing portion 15 to the pipe 14 without using a separate member. Therefore, the structure of the pipe harness 1 can be simplified.

[0038] (2) The position fixing portion 21 is a protrusion 23 formed by forming a recess in the outer peripheral surface of the pipe 14 so that the inner peripheral surface of the pipe 14 protrudes. Therefore, the position fixing portion 21 can have a simple shape formed by the recess.

[0039] (3) The inner diameter W1 of the protruding portion 23 is smaller than the outer diameter W2 of the sealing portion 15. This allows the sealing portion 15 to be tightly attached to the position fixing portion 21 in the pipe axial direction (the Y-axis direction in FIG. 3), ensuring high sealing performance.

[0040] (4) The position fixing portion 21 is formed around the entire circumference of the pipe 14. This makes it possible to ensure a large contact surface between the sealing portion 15 and the position fixing portion 21, which further contributes to ensuring high sealing performance.

[0041] (5) The position fixing portion 21 includes a first position fixing portion 21a located inside the axial direction of the pipe 14 (in the depth direction of the pipe 14) and a second position fixing portion 21b located outside the axial direction of the pipe 14 (toward the end of the pipe 14). The sealing portion 15 is disposed between the first position fixing portion 21a and the second position fixing portion 21b. This allows the sealing portion 15 to be disposed so as to be sandwiched between the first position fixing portion 21a and the second position fixing portion 21b, so that the sealing portion 15 can be firmly fixed in the pipe axial direction (the Y-axis direction in FIG. 3).

[0042] (6) The first position fixing portion 21a and the second position fixing portion 21b are formed in the same shape. Therefore, both the first position fixing portion 21a and the second position fixing portion 21b can be formed by the same manufacturing method, and therefore they can be formed easily.

[0043] (7) The distance Wa between the first position fixing portion 21a and the second position fixing portion 21b is set to be equal to or smaller than the thickness Wb of the sealing portion 15. This makes it possible to firmly fix the sealing portion 15 between the first position fixing portion 21a and the second position fixing portion 21b, which further contributes to ensuring high sealing performance.

[0044] (8) Pipe 14 is a metal pipe. In this case, a part of the metal pipe can be used as position fixing part 21, and therefore position fixing part 21 can be made of metal and have high strength.

[0045] This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that there is no technical contradiction. The shape of the sealing portion 15 is not limited to a shape having multiple steps in the thickness direction, and may be any shape that can seal the inside of the pipe 14.

[0046] The sealing portion 15 can be made of various materials such as resin. The sealing portion 15 may be an O-ring. The position fixing portion 21 is not limited to being provided in pairs on both sides of the sealing portion 15, but may be provided on at least one side, that is, on the pipe opening 22 side.

[0047] The position fixing portion 21 does not necessarily have to be provided over the entire circumference in the circumferential direction, and may be provided intermittently in the circumferential direction. The cross section of the position fixing portion 21 is not limited to being U-shaped, but may be changed to various shapes, such as a tongue-like shape.

[0048] The first position fixing portion 21a and the second position fixing portion 21b may have different shapes. The swaging process may be performed, for example, by a device that rotates a die and stretches the pipe base material while hitting it. Various methods such as cold forging can be used for the swaging process. In addition, the shaping is not limited to the swaging process, and for example, an electromagnetic pulse may be used to shape the pipe base material in the same manner as in the above embodiment.

[0049] The pair of the sealing portion 15 and the position fixing portion 21 does not necessarily have to be provided at both ends of the pipe harness 1, but may be provided at only one end. The inner diameter W1 of the protrusion 23 and the outer diameter W2 of the sealing portion 15 can be changed to various sizes as appropriate.

[0050] The distance Wa between the first position fixing portion 21a and the second position fixing portion 21b and the thickness Wb of the sealing portion 15 can be changed to various sizes as appropriate. The shape of the pipe 14 is not limited to a cylinder, but may be changed to another shape, such as a square shape.

[0051] The material of the pipe 14 is not limited to metal, but may be, for example, resin. The vehicle 2 is not limited to a fuel cell vehicle, and may be any of a variety of vehicles, such as an engine vehicle, a hybrid vehicle, a plug-in hybrid vehicle, or an electric vehicle.

[0052] The positions and number of the position fixing parts 21 and the engagement structure with the sealing part 15 may be changed. For example, it may be modified as shown in Figures 8 and 9. Specifically, the position fixing part 41 in this example is provided in the pipe 42 at a position corresponding to the middle part in the thickness direction of the sealing part 43 attached inside the pipe 42, and fixes the sealing part 43 at the attachment position. The thickness direction of the sealing part 43 is the same as the axial direction of the pipe 42 and the length direction of the electric wire 44.

[0053] Similar to the position fixing portion 21 of the above embodiment, the position fixing portion 41 of this example is a protrusion 45 formed by forming a recess in the outer peripheral surface of the pipe 42 so that the inner peripheral surface of the pipe 42 protrudes. The position fixing portion 41, i.e., the protrusion 45, is formed all around the circumference of the pipe 42 in the circumferential direction. The inner diameter of the protrusion 45 is smaller than the outer diameter of the sealing portion 43. The protrusion 45 is formed in a curved shape with the amount of protrusion changing continuously in the axial direction of the pipe 42.

[0054] As shown in FIG. 9, a recess 46 is formed on the outer peripheral surface of the middle part of the thickness direction of the sealing part 43, into which the position fixing part 41 fits before the sealing part 43 is attached to the inside of the pipe 42. That is, the sealing part 43 has an outer diameter of the middle part of the thickness direction smaller than the outer diameter of both sides in the thickness direction, so that the recess 46 is formed into which the position fixing part 41 fits. Also, as shown in FIG. 9, before the sealing part 43 is attached to the inside of the pipe 42, the outer peripheral surface of both sides in the thickness direction of the sealing part 43 is formed into a shape in which a plurality of large diameter parts 47 and small diameter parts 48 are alternately arranged in the thickness direction. Also, at both sides in the thickness direction of the sealing part 43, the maximum outer diameter is larger on the inner side in the axial direction of the pipe 42 than on the outer side in the axial direction of the pipe 42, so that the sealing property is mainly ensured on the inner side in the axial direction of the pipe 42.

[0055] Then, with the position fixing portion 41 formed on the pipe 42, the sealing portion 43 is inserted into the pipe 42 so as to change from the state shown in Figure 9 to the state shown in Figure 8, and is fixed by fitting the position fixing portion 41 into the recess 46.

[0056] Even in this case, substantially the same effect as that of the above embodiment can be obtained. More specifically, since the sealing portion 43 attached to the pipe 42 is fixed to the pipe 42 by the position fixing portion 41 integrally formed with the pipe 42, it is possible to fix the sealing portion 43 to the pipe 42 without using a separate member. This simplifies the structure of the pipe harness 1. Furthermore, since the position fixing portion 41 is provided at a position corresponding to the middle portion of the sealing portion 43 in the thickness direction, the single position fixing portion 41 can fix the sealing portion 43 so as not to move in both the thickness direction of the sealing portion 43 and the axial direction of the pipe 42.

[0057] Furthermore, a recess 46 is formed on the outer circumferential surface of the middle portion of the sealing portion 43 in the thickness direction, into which the position fixing portion 41 fits before being attached to the inside of the pipe 42, i.e., in a standalone state. With this configuration, the position fixing portion 41 fits into the recess 46, so that the sealing portion 43 can be firmly fixed to the pipe 42 so as not to move in either axial direction.

[0058] 10 and 11. Specifically, the position fixing part 51 (see FIG. 11) in this example is provided in the pipe 52 at a position corresponding to the middle part in the thickness direction of the sealing part 53 attached inside the pipe 52, and fixes the sealing part 53 at the attachment position. The thickness direction of the sealing part 53 is the same as the axial direction of the pipe 52 and the length direction of the electric wire 54.

[0059] Similar to the position fixing portion 21 of the above embodiment, the position fixing portion 51 of this example is a protrusion 55 formed by forming a recess in the outer circumferential surface of the pipe 52 so that the inner circumferential surface of the pipe 52 protrudes. The position fixing portion 51, i.e., the protrusion 55, is formed all around the circumferential direction of the pipe 52. The inner diameter of the protrusion 55 is smaller than the outer diameter of the sealing portion 53.

[0060] The sealing portion 53 has a constant outer diameter when no external force is applied thereto, that is, the sealing portion 53 in this example has a cylindrical shape when no external force is applied thereto. As shown in Fig. 10, the sealing portion 53 is inserted into the pipe 52 in a state where the position fixing portion 51 (see Fig. 11) is not formed in the pipe 52, and then, as shown in Fig. 11, the position fixing portion 51 is formed, whereby the intermediate portion in the thickness direction is compressed and fixed. In this configuration, the sealing performance is ensured mainly in the intermediate portion in the thickness direction of the compressed sealing portion 53.

[0061] Even in this case, substantially the same effect as that of the above embodiment can be obtained. More specifically, since the sealing portion 53 attached to the pipe 52 is fixed to the pipe 52 by the position fixing portion 51 integrally formed with the pipe 52, it is possible to fix the sealing portion 53 to the pipe 52 without using a separate member. This simplifies the structure of the pipe harness 1. Furthermore, since the position fixing portion 51 is provided at a position corresponding to the middle portion of the sealing portion 53 in the thickness direction, the single position fixing portion 51 can fix the sealing portion 53 so as not to move in both the thickness direction of the sealing portion 53 and the axial direction of the pipe 52.

[0062] Furthermore, since the outer diameter of the sealing portion 53 is constant when no external force is applied, the shape of the sealing portion 53 is simple and can be easily manufactured. Note that the outer periphery of the sealing portion 53 may be formed in a shape in which a plurality of large diameter portions and small diameter portions are alternately arranged in the thickness direction. [Explanation of symbols]

[0063] 1 Pipe harness 2 Vehicles 13 Electric wire 14 Pipes 15 Sealing part 16 holes 21 Position fixing part 21a 1st position fixing part 21b Second position fixing part 22 Pipe opening 23 Protruding part 29 Jig 41 Position fixing part 42 Pipe 43 Sealing part 44 Electric wire 45 Protrusion 46 Recess 47 Large diameter section 48 Small diameter section 51 Position fixing part 52 Pipe 53 Sealing part 54 Electric wire 55 Protrusion W1 Inner diameter W2 Outer diameter Wa Interval Wb Thickness

Claims

1. Electric wires and A pipe through which the electric wire is inserted; a sealing portion through which the electric wire is inserted and which is attached to the inside of the pipe to ensure sealing performance within the pipe; a position fixing portion provided in the pipe at a position corresponding to a thickness direction intermediate portion of the sealing portion attached within the pipe, the position fixing portion fixing the sealing portion at the attachment position; The sealing portion of the pipe harness has a shape in which a plurality of large diameter portions and small diameter portions are alternately arranged on both sides in a thickness direction of a recess corresponding to the position fixing portion.

2. The pipe harness according to claim 1 , wherein the position fixing portion is a protrusion formed by forming a recess in an outer circumferential surface of the pipe such that an inner circumferential surface of the pipe protrudes.

3. The inner diameter of the protruding portion is smaller than the outer diameter of the sealing portion. The pipe harness according to claim 2.

4. The position fixing portion is formed on the entire circumference of the pipe in the circumferential direction. The pipe harness according to any one of claims 1 to 3.

5. A pipe harness as described in any one of claims 1 to 4, wherein a recess is formed on an outer surface of a thickness-wise intermediate portion of the sealing portion, the recess being shaped to fit the position fixing portion before the pipe is attached inside the pipe.

6. The sealing portion has a constant outer diameter when no external force is applied. The pipe harness according to any one of claims 1 to 4.

7. Electric wires and A pipe through which the electric wire is inserted; a sealing portion through which the electric wire is inserted and which is attached to the inside of the pipe to ensure sealing performance within the pipe; a position fixing portion provided on at least the pipe opening side on both sides in a thickness direction of the sealing portion attached inside the pipe, the position fixing portion fixing the sealing portion at an attachment position; The sealing portion has a shape in which a plurality of large diameter portions and small diameter portions are alternately arranged in a thickness direction of the sealing portion, The position fixing portion includes a first position fixing portion located on an axial inner side of the pipe and a second position fixing portion located on an axial outer side of the pipe, the sealing portion is disposed between the first position fixing portion and the second position fixing portion, A pipe harness in which a distance between the first position fixing portion and the second position fixing portion is formed to be equal to or smaller than a thickness of the sealing portion.

8. The first position fixing portion and the second position fixing portion are formed in the same shape. The pipe harness according to claim 7.

9. The pipe is a metal pipe. The pipe harness according to any one of claims 1 to 8.

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