A stamping tool may include a base and a cover. The cover is removably affixed to the base through a hinging assembly. The base can include a first base hinge and a second base hinge substantially perpendicular to the first base hinge. The base hinges can include hinge sections. The hinge sections can include a first wall and a second wall that can be biased to define a cavity that is accessible through a channel between the first wall and the second wall. Hinge sections can be separated by one or more receptacles. The cover can include one or more hinge bars corresponding to the hinge sections on the base. The hinge bars can have an unequal aspect ratio allowing for easy insertion and removal of the cover. The cover can also include one or more protrusions separating the hinge bars. These protrusions correspond to the receptacles on the base.

An opening/closing mechanism for a tail gate includes a hinge device configured to rotate the tail gate relative to side walls, and a latch device configured for engagement with a striker provided on the side wall to hold the tail gate in a closed state. The hinge device includes an electric driving device provided on the tail gate and configured to rotate the tail gate by means of a motor, and a coupling configured to couple a body-side engagement portion provided on the side wall and an output shaft of the electric driving device together. The output shaft of the electric driving device fits in a fitting hole portion in a first cylindrical portion formed at one end side of the coupling, and the body-side engagement portion fits in a fitting recessed portion in a second cylindrical portion formed at the other end side of the coupling.

A vehicle including a vehicle cargo area includes a hinge pin in a wall of the vehicle cargo area, a cargo cover defining first and second slots, a single-piece clip which includes a first fixing feature positioned in the first slot, and a second fixing feature positioned in the second slot. The clip defines a channel receiving the hinge pin.

An integrated hinge structure is disclosed herein, comprising a hinge shaft provided on a first connecting member and a hinge arm provided on a second connecting member, the hinge arm being rotatably connected to the hinge shaft, wherein a coupling structure is formed between the hinge shaft and the hinge arm, the coupling structure allowing the hinge arm only to be installed to or detached from the hinge shaft in a certain direction and allowing the installed hinge arm to rotate for any angle or freely while staying connected to the hinge shaft. Furthermore, the hinge shaft and the hinge arm are respectively formed integrally on the corresponding connecting members, providing a simple and firm structure.

A protrusion is formed on a facing surface which is integral with a shaft of a hinge mechanism. The protrusion has a tip that is in contact with an end surface of the engagement portion when the first member and the second member swing relative to each other, so that displacement of the second member along the lengthwise direction of the shaft is restricted. A state immediately after the engagement portion is engaged with the shaft is referred to as an initial engagement state. In the initial engagement state, the protrusion is situated at a position beyond a center of the shaft when viewed in a direction of engaging the engagement portion with the shaft, and the end surface of the engagement portion is separated from the tip of the protrusion.

A coupling with distinct portions formed as a unitary structure and a fastener placed at one end of the coupling both provided to constrain assembly components and control their relative motion linearly along and rotationally around a longitudinal center axis is presented. The coupling portions are composed of complex concave polygon or circular shapes whose normal section is determined by the manner in which the adjacent assembly components are required, alternately, to move or not move. Specific geometric constraints for the various coupling portions must be met. Various coupling embodiments may result from differing fastening elements including screw, friction fit and bonded types being attached to the coupling body piece.

A hinge system includes first and second hinge assemblies. The first hinge assembly includes a first hinge plate with a post and a second hinge plate with a collar configured to selectively receive the post. The second hinge assembly includes a third hinge plate with a counter bore and a keyway and a fourth hinge plate with a key configured to be selectively received within the keyway and the counter bore.

A vehicle including a vehicle cargo area includes a hinge pin in a wall of the vehicle cargo area, a cargo cover defining first and second slots, a single-piece clip which includes a first fixing feature positioned in the first slot, and a second fixing feature positioned in the second slot. The clip defines a channel receiving the hinge pin

A stamping tool may include a base and a cover. The cover is removably affixed to the base through a hinging assembly. The base can include a first base hinge and a second base hinge substantially perpendicular to the first base hinge. The base hinges can include hinge sections. The hinge sections can include a first wall and a second wall that can be biased to define a cavity that is accessible through a channel between the first wall and the second wall. Hinge sections can be separated by one or more receptacles. The cover can include one or more hinge bars corresponding to the hinge sections on the base. The hinge bars can have an unequal aspect ratio allowing for easy insertion and removal of the cover. The cover can also include one or more protrusions separating the hinge bars. These protrusions correspond to the receptacles on the base.

A protrusion is formed on a facing surface which is integral with a shaft of a hinge mechanism. The protrusion has a tip that is in contact with an end surface of the engagement portion when the first member and the second member swing relative to each other, so that displacement of the second member along the lengthwise direction of the shaft is restricted. A state immediately after the engagement portion is engaged with the shaft is referred to as an initial engagement state. In the initial engagement state, the protrusion is situated at a position beyond a center of the shaft when viewed in a direction of engaging the engagement portion with the shaft, and the end surface of the engagement portion is separated from the tip of the protrusion.