The present invention provides a crib rail structure that includes: at least one hollow horizontal tube member, a side portion of which is provided with a plurality of interspaced openings; and a plurality of hollow beam tube members, which are respectively inserted into the interspaced openings of the hollow horizontal tube members for assembly use. The sides of each of the hollow beam tube members are provided with a through opening, which are located in the tail end of the hollow beam tube member. Moreover, the positions of the through openings are adjacent to the sides of each of the interspaced openings of the hollow horizontal tube member. The crib rail structure further comprises the at least one fixing member, which passes through the plurality of hollow beam tube members and presses against the tube inner wall of the hollow horizontal tube member for fixing thereof.

Embodiments of this application relate to connectors configured for coupling to a hollow structure, for joining hollow structures together, and/or for joining a hollow structure to a functional element. A connector may be configured to couple to one or more hollow structures, and may be further configured to couple to one or more functional elements. Exemplary connectors comprise a shell and a plug.

Embodiments of this application relate to connectors configured for coupling to a hollow structure, for joining hollow structures together, and/or for joining a hollow structure to a functional element. A connector may be configured to couple to one or more hollow structures, and may be further configured to couple to one or more functional elements. Exemplary connectors comprise a shell and a plug.

Stacking storage arrangement including at least one container receiving space: a loading space which is arranged below the container receiving space: a frame assembly between the container receiving space and the loading space; and an upright on at least one corner of the container receiving space, which is connected to the frame assembly by at least one connecting device. The connecting device bridges an angle between the frame assembly and the upright and abuts the frame assembly in a clamping manner.

A connection device for mobile frame structures includes a bracket on a surface having a cam shaft and a cam lock has a spiral axial slot having a locking groove and a central cam groove. A cam follower, a spring and a force stop are positioned in the central cam groove. A retention device holds the components in the cam groove. A structural support is engaged to the cam lock. An intersection between the spiral axial slot and the central cam groove has one or more detents which engage the cam follower prior to engagement of the cam lock to the bracket. The cam shaft is positioned in the spiral axial slot and the cam lock is rotated moving the cam shaft into the locking groove and depressing the cam follower relative to the spring to lock the cam shaft into the locking groove.

A joint for a composite frame includes a first composite rod, a first shell abutting the first composite rod, a second shell abutting the first composite rod and disposed opposite the first shell relative to the first composite rod. The first and second shells are joined together such that composite rod is fixed therebetween. A method of forming joints of composite frame includes forming a composite frame by interconnecting a plurality of composite rods formed by an Automated Fiber Placement (AFP) manufacturing method around a mandrel, applying a first shell to the plurality of composite rods at a first location where composite rods are interconnected, applying a second shell at the first location opposite the first shell relative to the composite rods, and joining the first and second shells together with the composite rods at the first location disposed between the first and second shells.

Provided is a device for changing a frame angle of a foldable article. The device combines frames using a connecting and assembling member and an elastic string and makes up a leg or a support frame of the foldable article. The connecting and assembling member with which a first end of the elastic string is combined and which has multiple combination grooves in such a manner that the frame combined with a second end of the elastic string is selectively combined with the connecting and assembling member. The first end of elastic string is combined with the connecting and assembling member, and the second end of the elastic string is combined with the frame such that the frame can be elastically operated. The frame is combined with the first end of the elastic string and is elastically insertable into or separable from the connecting and assembling member.

A connection device for mobile frame structures includes a bracket on a surface having a cam shaft and a cam lock has a spiral axial slot having a locking groove and a central cam groove. A cam follower, a spring and a force stop are positioned in the central cam groove. A retention device holds the components in the cam groove. A structural support is engaged to the cam lock. An intersection between the spiral axial slot and the central cam groove has one or more detents which engage the cam follower prior to engagement of the cam lock to the bracket. The cam shaft is positioned in the spiral axial slot and the cam lock is rotated moving the cam shaft into the locking groove and depressing the cam follower relative to the spring to lock the cam shaft into the locking groove.

Apparatus and methods for joining tubes in transport structures are presented herein. A part having an attached node with a socket can be joined with tubes. The tubes can be placed along nonparallel axes within the socket; and a wedge can be used to secure the tubes to the socket. The wedge can be secured between the tubes by using a fastener, such as a blind fastener; alternatively, or additionally, the wedge can be secured between the tubes using an adhesive.

A load anchor assembly for attachment to a tubular member having an exterior surface, comprising an anchor base and a portion extending from the anchor base adapted to secure a vehicle component. The assembly includes a boss having a first flanged end and a second end, where the boss is adapted to be positioned in first and second apertures in the exterior surface of the tubular member with the flanged end in contact with the first aperture and the second end accessible through the second aperture. There is at least one fastener connected to the anchor base and the second end to secure the anchor base to the flanged boss.