Robot joint structure and robotic hand including the same

Robot Joint Structure

This technology forms a joint by connecting two spaced-apart bodies with a cross-flexure hinge consisting of two pairs of intersecting connectors. When applied to the finger joints of a robotic hand, it achieves both high rigidity and a compact design.

Conventional robot joint structures often lack sufficient rotational rigidity, limiting their precision in gripping tasks. Furthermore, the bulky nature of these joints makes it difficult to achieve a compact, miniaturized design for robotic hands.

This technology connects the first and second bodies using two joint units arranged in mirror symmetry (each containing two intersecting connectors) to enhance rigidity. By integrating a pulley and wire drive system within the bodies, it maximizes the spatial efficiency of the robotic hand. Applicable to industrial robots and automation systems, it improves the stability and rotational stiffness of robotic hands, enabling them to effectively mimic human hand movements.

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Key Features:

• A second joint unit positioned to face the first joint unit, connecting the first body and the second body
• A robot joint structure where the first joint unit and the second joint unit are cross-flexure hinges.
• A first joint unit connecting the first body and the second body
• A second body positioned at a distance from the first body