18480772. EXTENSION-RETRACTION DEVICE simplified abstract (TOYOTA JIDOSHA KABUSHIKI KAISHA)

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EXTENSION-RETRACTION DEVICE

Organization Name

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor(s)

Hirofumi Inoshita of Toyota-shi (JP)

Satoshi Kojima of Nisshin-shi (JP)

EXTENSION-RETRACTION DEVICE - A simplified explanation of the abstract

This abstract first appeared for US patent application 18480772 titled 'EXTENSION-RETRACTION DEVICE

The extension-retraction device described in the patent application consists of two belts wound around a tubular structure, with the second belt having an engaging pin that fits into a hole in the first belt.

  • The first belt and second belt are spirally wound around a tubular structure.
  • The second belt includes an engaging pin with a fitting portion and an insertion portion.
  • The fitting portion of the engaging pin fits into a hole in the first belt.
  • The insertion portion protrudes from the fitting portion and is inserted into the hole of the first belt.
  • The fitting portion has a cylindrical shape with a diameter corresponding to the hole of the first belt.
  • The side surface of the insertion portion is inclined, decreasing in diameter towards the tip.

Potential Applications: - This device could be used in retractable mechanisms for various products such as window shades, seat belts, or retractable dog leashes. - It could also be utilized in industrial settings for automated machinery that requires extension and retraction mechanisms.

Problems Solved: - Provides a reliable and efficient way to control extension and retraction of belts or similar mechanisms. - Ensures a secure connection between the two belts, preventing slippage or disengagement during operation.

Benefits: - Improved durability and longevity of extension-retraction mechanisms. - Enhanced safety and stability in products utilizing this device. - Simplified design and assembly process for products incorporating this technology.

Commercial Applications: - This technology could be applied in the automotive industry for seat belt retractors. - It could also be used in home improvement products like retractable awnings or blinds.

Prior Art: - Prior art related to this technology may include patents or publications on belt winding mechanisms or retractable devices in various industries.

Frequently Updated Research: - Stay updated on advancements in materials science for belt durability. - Monitor developments in automation technology for improved control of extension-retraction mechanisms.

Questions about the Extension-Retraction Device: 1. How does the inclined side surface of the insertion portion contribute to the functionality of the device? 2. What are the potential challenges in scaling this technology for use in larger industrial applications?


Original Abstract Submitted

The extension-retraction device according to the present disclosure is an extension-retraction device in which a first belt and a second belt wound around the outside of the first belt are spirally wound around a tubular structure. The second belt includes an engaging pin having a fitting portion that fits into a hole of the first belt and an insertion portion that protrudes from the fitting portion and is inserted into the hole of the first belt. The fitting portion has a cylindrical shape having a diameter corresponding to the hole of the first belt, and the side surface of the insertion portion is inclined so that the diameter of the insertion portion decreases toward the tip portion.