Mechanical joint for collapsible structures

F - Mech Eng,Light,Heat,Weapons – 16 – B

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F16B 7/00 (2006.01) B21D 39/06 (2006.01) F16B 17/00 (2006.01)

Patent

CA 2520911

A mechanical joint is formed from a hollow structure (101) of material that can be shaped so that bringing opposite sides of the external walls forming the hollow structure (101), forms a socket (801). For example, by compressing together opposite external sides of a hollow structure (101), such as a tube (101), the (801) socket with a continuous double wall is formed. The socket (801) is configured to provide a snap fit with a moveable member (1001). A flexible member (901) is positioned in the socket (801) and attached to the moveable member (1001), so that the moveable member (1001) can be controlled for placement in an out of the socket (801). The flexible member (901) may also twist to permit the moveable member (1001) to be located in any position necessary to allow the moveable member (1001) to be engaged in the socket (801) or disengaged from the socket (801), reducing the need for precise component tolerances. The joint is useful in structures that have multiple configurations. For example, the joint finds application in structures such as portable game goals, where it is desirable for the structure to collapse from an erect position for game play into a collapsed configuration for transport.

Une articulation mécanique est formée à partir d'une structure creuse de matériau qui peut être mise en forme de façon que le fait d'amener des côtés opposés des parois externes formant ensemble le creux forme une raccord. En comprimant, par exemple, des côtés externes opposés d'une structure creuse telle qu'un tube, on forme un raccord avec une double paroi continue. Ce raccord est agencé de façon à fournir un encliquetage à un élément mobile. Un élément souple est placé dans ce raccord et fixé à l'élément mobile, de façon qu'on puisse commander cet élément mobile en vue de le placer dans le raccord ou de l'en retirer. Cet élément souple peut aussi tourner de façon à permettre de localiser l'élément mobile dans toutes les positions requises pour permettre d'emboîter cet élément mobile dans le raccord ou de le déboîter de ce dernier, réduisant ainsi les tolérances de composant précises. Cette articulation convient pour des structures à configurations multiples. Cette articulation trouve, par exemple, une application dans des structures telles que des buts de jeu portables, dans lesquelles il est souhaitable que cette structure puissent se replier à partir d'une position déployée dans laquelle on joue, dans une configuration repliées lors du transport..

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