Water-stopping structure, wire harness, and method for manufacturing a wire harness
JP2026100511APending Publication Date: 2026-06-19YAZAKI CORP +1
Patent Information
- Application Number
- JP2024214744
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2026-06-19
AI Technical Summary
Technical Problem
Existing wire harnesses with large-diameter wires, such as high-voltage wires, face challenges in ensuring effective water stop performance due to insufficient penetration of resin between the wire bundle and braiding, leading to potential leaks.
Method used
A watertight structure is implemented by attaching spacers to the wire bundle, covering it with a cylindrical braid, and filling the gaps with resin to create a watertight section, ensuring the resin penetrates between the wires and braid, enhancing water stop performance.
Benefits of technology
The structure ensures good watertight performance by expanding the braid mesh and filling gaps with resin, providing effective sealing against water ingress, particularly at the interface with a grommet.
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Smart Images
Figure 2026100511000001_ABST
Abstract
The present invention provides a watertight structure, a wire harness, and a method for manufacturing a wire harness that can ensure good watertight performance in the watertight section between a wire bundle having a braid covering its outer circumference and a watertight member. [Solution] A watertight structure is provided in which a wire bundle 13, which is made up of multiple electric wires 11, is provided with a watertight section 15 for sealing off water between it and a grommet 21. The watertight section 15 is attached to the outer circumference of the wire bundle 13 at a position that includes a watertight section S where watertight sealing is required between it and the grommet 21, and comprises at least one pair of spacers 31 arranged at intervals in the longitudinal direction of the wire bundle 13, a cylindrical braid 33 that covers the outer circumference of the wire bundle 13 including the spacers 31, and a resin 35 that covers the outer circumference of the wire bundle 13 in the watertight section S together with the spacers 31 and the braid 33.
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Citation Information
Patent Citations
Water stop processing method of grommet, and method of manufacturing wire harness with grommet
JP2012085387A