A fastener structure includes a fastener having a stem portion and at least one movement portion. The stem portion has a fastening section. The movement portion is formed on the stem portion and has a retaining section. With these arrangements, the retaining section of the movement portion can be detachably assembled to a first object and the fastening section can be then detachably assembled or fastened to a second object. In this way, at least two objects can be connected to and disconnected from one another in a quick and repeatable manner.

A device for mounting a derailleur of a rear gearshift on a bicycle frame is provided. The device includes a pin suitable for being fixed in a corresponding seat of said bicycle frame, an annular seat formed on said pin, a support body of said derailleur, a through hole formed in said support body and crossed by said pin, an abutment element associated with said pin in said annular seat, wherein said abutment element provides a support in the axial direction on said pin. Said abutment element comprises a first and a second component, which are shaped like an annular sector and that can be connected together through respective shaped attachment portions.

A quick fastener by means of which at least a first and a second component are connectable to each other. The quick fastener includes a fastening bolt having a fastening thread of a first spiral direction, which is fastenable at the second component, and a compressible pretension element which is fastenable at the first component. The compressible pretension element includes a pretension thread at a radial inner side having a second spiral direction opposite to the first spiral direction, a hollow cylindrical thread element which is screwable with an outer thread at a radial outer side into the pretension thread of the pretension element having an inner thread at its radial inner side into which the fastening thread of the fastening bolt is screwable. At least a constructive rotation protection is provided between the hollow cylindrical thread element and the compressible pretension element. A production method for the quick fastener is further provided.

In some examples, a device can include a display coupled to a locking mechanism, wherein the locking mechanism applies a first force in a first direction, an enclosure coupled to the display with the locking mechanism, and a spring mechanism coupled to the enclosure and the locking mechanism to prevent a tension level between the display and the enclosure from exceeding a tension threshold, wherein the spring mechanism applies a second force in a second direction.

A lateral positioning device coupled to a first object to laterally engage or interfere with a second object. The lateral positioning device includes a body portion and positioning element. The body portion is coupled to the first object in a first direction and has a through hole which has therein a limiting portion and extends in a second direction, with an angle formed between the first and second directions. The positioning element is penetratingly disposed in the through hole and limited by the limiting portion to thereby move in the second direction. The positioning element has an engaging portion disposed on the first side of the limiting portion to allow the engaging portion to engage with the second object; a stopping portion disposed on the second side of the limiting portion; and a neck portion connecting with the engaging and stopping portions and passing through the limiting portion.

A structural frame for a building includes a plurality of columns, beams, and beam-to-column connections. A plurality of braces are positioned in frame bays formed by respective pairs of columns and beams, each brace comprising a multi-piece brace having a plurality of brace portions. A plurality of discontinuous elastic zone connections couple the plurality of beams to the plurality of columns via the plurality of beam-to-column connections and/or couple pieces of the multi-piece brace together. Each of the discontinuous elastic zone connections comprises connection mechanisms and a compression element positioned on each connection mechanism, with each compression element comprising a single component or a plurality of deformable components in a parallel stack, a series stack, or a combination of parallel stacks and series stacks. The compression element is configured to provide elasticity in the structural frame and dampen the effects of transient loads on the structural frame.

In some examples, a device can include a display coupled to a locking mechanism, wherein the locking mechanism applies a first force in a first direction, an enclosure coupled to the display with the locking mechanism, and a spring mechanism coupled to the enclosure and the locking mechanism to prevent a tension level between the display and the enclosure from exceeding a tension threshold, wherein the spring mechanism applies a second force in a second direction.

A lamp assembly and to a method for assembling the lamp assembly with a heat sink, a base plate for holding at least one light source, and a reflector. A light that can be generated by the light source can be directed into this reflector and wherein the heat sink has a mounting surface on which the base plate and the reflector are arranged one on top of the other. A common mounting opening extends through the heat sink, the base plate, and the reflector, wherein a spring element and a tension element are arranged in this opening and wherein the heat sink, the base plate, and the reflector are clamped one on top of the other with a clamping force by means of the spring element. The clamping force is applied on the spring element by means of the tension element.

An assembly of a pylon and of a nacelle of an aircraft, wherein the nacelle has a structure, a visor, two centering systems and two tensioning systems. Each tensioning system comprises a first fitting, which is attached to the structure and has an engagement wall through which an orifice passes, a second fitting, which is attached to the visor, a threaded rod that is articulated on the second fitting and passes through the orifice, a spring element fitted on the threaded rod against the opposite face of the engagement wall from the second fitting, and an arresting means that blocks the spring element. Each centering system comprises a first fitting, which is attached to the structure and has a bore, and a second fitting, which is attached to the visor and bears a shaft that is accommodated in the bore.

A damping arrangement which is fastenable in an opening of a first component and by which a dampened connection of the first component with a second component is realizable, including, two identically constructed damping elements. Each damping element includes: a head portion with a first outer diameter, a shaft portion with a second outer diameter that is smaller than the first outer diameter and extends from a bottom side of the head portion, as well as a central first thru-opening, and only one sleeve with a central second thru-opening being arranged at least partly in the central first thru-opening of each damping element by means of a frictional and/or material connection. By means of the only one sleeve, the two identically constructed damping elements with bottom sides, facing each other, of the head portion with the first component arranged in between are fastenable to one another.