US-12617355-B2 - Wire harness

US12617355B2US 12617355 B2US12617355 B2US 12617355B2US-12617355-B2

Abstract

A harness body includes a first routed portion routed to an other end portion of a first arm member on a first coupling target side, a second routed portion routed on the first coupling target side with respect to the first routed portion, and a third routed portion guided toward a fixed portion on a second coupling target side by a harness guide tool at the other end portion of the first arm member and having a fixing portion fixed to the fixed portion, a link mechanism includes a first rotation shaft, a second rotation shaft, and a third rotation shaft, and the second routed portion is wound around the harness guide tool and the third routed portion with slack.

Inventors

Naoto Kogure
Hikaru Sano
Takeshi Onoda

Assignees

YAZAKI CORPORATION

Dates

Publication Date: 20260505
Application Date: 20240612
Priority Date: 20220228

Claims (4)

1 . A wire harness comprising: a harness body that includes a first routed portion routed in a link mechanism that couples a first coupling target and a second coupling target, a second routed portion routed on the first coupling target side with respect to the first routed portion, and a third routed portion routed on the second coupling target side with respect to the first routed portion; a harness fixing tool that fixes a fixing portion of the third routed portion to a fixed portion on the second coupling target side provided so as not to cause relative displacement with respect to the second coupling target; and a harness guide tool that restricts a routing path of the third routed portion, wherein the link mechanism includes a first arm member having one end portion coupled to the first coupling target side and an other end portion at which the first routed portion is routed, a second arm member having one end portion coupled to the second coupling target side, a first rotation shaft that enables relative rotation between the first coupling target and the one end portion of the first arm member, a second rotation shaft that is parallel to the first rotation shaft and enables relative rotation between the other end portion of the first arm member to which the harness guide tool is fixed and an other end portion of the second arm member, and a third rotation shaft that is parallel to the first rotation shaft and the second rotation shaft and enables relative rotation between the second coupling target and the one end portion of the second arm member, and enables relative displacement between the first coupling target and the second coupling target along an orthogonal plane with respect to the first rotation shaft, the second rotation shaft, and the third rotation shaft, the harness guide tool guides the third routed portion toward the fixed portion on the second coupling target side located in a direction intersecting the orthogonal plane with respect to the harness guide tool, and the second routed portion is wound around the harness guide tool and the third routed portion with slack.
2 . The wire harness according to claim 1 , wherein the harness guide tool includes a lead-in port through which the first routed portion routed to the other end portion of the first arm member along the first arm member is led in, a lead-out port through which the third routed portion is led out and directed toward the fixed portion on the second coupling target side, and a guide space that guides the first routed portion led in from the lead-in port and guides the third routed portion to the lead-out port.
3 . The wire harness according to claim 1 , wherein the second routed portion is wound around the harness guide tool and the third routed portion with slack and drawn to the first coupling target side, and is directly or indirectly fixed to the first coupling target.
4 . The wire harness according to claim 2 , wherein the second routed portion is wound around the harness guide tool and the third routed portion with slack and drawn to the first coupling target side, and is directly or indirectly fixed to the first coupling target.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application is a continuation application of International Application No. PCT/JP2023/005657 filed on Feb. 17, 2023 which claims the benefit of priority from Japanese Patent Application No. 2022-028847 filed on Feb. 28, 2022 and designating the U.S., the entire contents of which are incorporated herein by reference. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness. 2. Description of the Related Art Conventionally, a vehicle such as an automobile is mounted with a wire harness that electrically connects a power source (secondary battery or the like), an electrical component, or the like on a vehicle body side to a switch, an electrical component, or the like on a slide door side. In this wire harness, a harness body is routed between the vehicle body and the slide door, and the routing path of the harness body changes in conjunction with the opening/closing operation of the slide door. This type of wire harness is disclosed in, for example, Japanese Patent Application Laid-open No. 2021-19386. Incidentally, in the vehicle, a slide mechanism that performs a sliding operation of the slide door is assembled between the slide door and the vehicle body. For example, in a vehicle, it is conceivable to use a link mechanism passed between the slide door and the vehicle body as the slide mechanism. Then, in this vehicle, it is conceivable to route the harness body along the link mechanism. In this case, in the wire harness, the harness body follows the movement of the link mechanism, but it is not preferable that an overload is applied to the harness body due to excessive bending or the like. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a wire harness capable of causing the harness body to follow the movement of the link mechanism without overload. In order to achieve the above mentioned object, a wire harness according to one aspect of the present invention includes a harness body that includes a first routed portion routed in a link mechanism that couples a first coupling target and a second coupling target, a second routed portion routed on the first coupling target side with respect to the first routed portion, and a third routed portion routed on the second coupling target side with respect to the first routed portion; a harness fixing tool that fixes a fixing portion of the third routed portion to a fixed portion on the second coupling target side provided so as not to cause relative displacement with respect to the second coupling target; and a harness guide tool that restricts a routing path of the third routed portion, wherein the link mechanism includes a first arm member having one end portion coupled to the first coupling target side and an other end portion at which the first routed portion is routed, a second arm member having one end portion coupled to the second coupling target side, a first rotation shaft that enables relative rotation between the first coupling target and the one end portion of the first arm member, a second rotation shaft that is parallel to the first rotation shaft and enables relative rotation between the other end portion of the first arm member to which the harness guide tool is fixed and an other end portion of the second arm member, and a third rotation shaft that is parallel to the first rotation shaft and the second rotation shaft and enables relative rotation between the second coupling target and the one end portion of the second arm member, and enables relative displacement between the first coupling target and the second coupling target along an orthogonal plane with respect to the first rotation shaft, the second rotation shaft, and the third rotation shaft, the harness guide tool guides the third routed portion toward the fixed portion on the second coupling target side located in a direction intersecting the orthogonal plane with respect to the harness guide tool, and the second routed portion is wound around the harness guide tool and the third routed portion with slack. The above and other objects, features, advantages and technical and industrial significance of this invention will be better understood by reading the following detailed description of presently preferred embodiments of the invention, when considered in connection with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective diagram illustrating a wire harness of an embodiment together with a link mechanism; FIG. 2 is a plan diagram of the wire harness of the embodiment as viewed from a lead-in port side together with the link mechanism; FIG. 3 is a plan diagram of the wire harness of the embodiment as viewed from a lead-out port side together with the link mechanism; FIG. 4 is a perspective diagram describing deformation of a wound portion of a second routed portion in accordance with movement of the link mechanism; FIG. 5 is a plan dia