Abstract: A roller assembly includes a roller having an axial hole and an axle portion disposed in the axial hole to allow the roller to rotate about the axle portion; a sleeve with a first end disposed at a first end of the axle portion and a second end having a fitting portion, the fitting portion being fitted to a carried object, the sleeve has a first blocking portion positioned proximate to a first side of the roller to allow the roller to rotate between the first blocking portion and the fitting portion, wherein one of the axle portion, the axial hole and the first blocking portion has a substance conducive to reduction of friction between the roller and the sleeve.

Abstract: A fastening structure includes an operating engaging element and a body portion. The operating engaging element has an engaging portion and an operating portion. The operating portion has a moving surface abutting against a corresponding moving surface of the operating engaging element to cause movement of the operating engaging element. The body portion has a mounting portion which the operating engaging element is mounted on; or the operating engaging element has a mounting portion which the body portion is mounted. With the engaging portion, the operating engaging element is fastened to an object, and the body portion is fastened to another object, thereby fastening the two objects together. Unfastening the two objects entails pressing the operating portion such that the moving surface of the operating portion abuts against the corresponding moving surface of the operating engaging element to cause movement of the operating engaging element, thereby separating the objects.

Abstract: A fastening device includes at least one base portion and at least one fastener portion. The base portion is connected to a first object and the fastener portion is slidably assembled to the base portion. The fastener portion cooperates with the base portion to provide a locking and an unlocking function for connecting or disconnecting a second object to or from the base portion. With these arrangements, two objects can be repeatedly and quickly connected to or disconnected from each other.

Abstract: A fastener structure and an assembling method thereof are introduced. The fastener structure includes a head portion and a body portion. The body portion is movably connected to the head portion and includes a connecting section for assembling to an intermediate member. The intermediate member includes a material retaining section and can be further connected to an object. Partial material of the object would move or flow into the material retaining section when the intermediate member is forcefully pressed against the object, so that the intermediate member and the object are connected together. Since the body portion can be assembled to the intermediate member and the intermediate member can be further connected to an object, and the fastener structure can be fastened to and released from a target object, at least two objects can be repeatedly and quickly connected to and disconnect from one another using the fastener structure.

Abstract: A pull aid structure includes a handle; a connecting element movably disposed at the handle; and a positioning element disposed at the handle and movably coupled to the connecting element. The pull aid structure enables a user to place the connecting element on an object, rotate the handle to fasten another object, confine the positioning element to the connecting element, and compress an elastic element, so as to couple together the two objects. To remove one of the objects, the user separates the positioning element and the connecting element to thereby separate the two objects, thereby achieving quick coupling and ease of removal.

Abstract: A floating fixing component and a mounting method thereof are introduced. The floating fixing component includes at least a stop section and an application section. The stop section is used to abut against an object to prevent the floating fixing component from separating from the object. The floating fixing component and the object have a floating space existed between them, such that the floating fixing component can float and shift on and relative to the object. With these arrangements, the floating fixing component can be mounted to an object while the application section can be fastened to or disconnected from another object. In this manner, at least two objects can be repeatedly and quickly connected to and disconnected from one another.

Abstract: An operating lever assembly includes a fastening member having a retaining section releasably fastened to a first object, a receiving space and a locating section; and a lever member having a mating locating section and being movably connected at an end to the receiving space and at another end to a second object. Alternatively, the fastening member includes a retaining section and a locating section; and the lever member includes a mating locating section and a receiving space, to which the fastening member is movably connected. The fastening member can be pushed to release the retaining section from the first object, while the lever member is moved in the receiving space and the locating section is engaged with the mating locating section to hold the fastening member to the lever member, allowing the first object to be repeatedly and quickly separated from or fastened to the second object.

Abstract: A rolling module structure and a method for use therewith are introduced. The rolling module structure includes a carrier and at least one rolling member. The rolling member is fitted to the carrier to form a rolling module structure. The rolling module structure is fitted to a moving target, allowing the moving target to move smoothly because of the rolling member.

Abstract: A handle structure includes a handgrip body and at least one rotating body. The rotating body is pivotally connected to the handgrip body, the rotating body is used to pivotally connect a first object, and when rotating, the rotating body drives the handgrip body to move toward the first object for reducing the height of the handle structure. Therefore, the handle structure can make a handgrip body moved out toward a direction distant from the first object when used, and can make the handgrip body moved in toward a direction of the first object when not in use for reducing the height of the handgrip body so as to operate and use easily and prevent collision.

Abstract: A fastener structure includes a casing, an engaging element and a controlling element. The engaging element is movably disposed at the casing. The controlling element is movably disposed at the casing. The controlling element controls the engaging element to enter a locked state or unlocked state. Therefore, the casing is fitted to the first object, such that engaging element is fastened to or unfastened from the second object, so as to couple together quickly and separate easily at least two objects.

Abstract: A fittable and releasable fastener includes a head which has a fitted and released portion and a fastening portion; and a fitting and releasing piece which has a fitting and releasing portion. Accordingly, when the fitting and releasing portion fits to the fitted and released portion, an external turning force is applied to the fitting and releasing piece or the head to make the fastening portion combine with at least one object. After the fastening portion is combined with the object, the fitting and releasing portion would release the fitted and released portion to limit the force or the force interval applied on the fastening portion for preventing excessively locking if the force is continuously applied.

Abstract: A handle with a fastening portion includes a body and a second fastening portion. The second fastening portion is provided on one end of the body, and includes a neck configured to be receivingly fastened into, assembled into or fitted with a coupling counterpart. Thus, the handle may be assembled with a coupling counterpart when in use, and the handle may be removed from the coupling counterpart when not in use, achieving effects of easy operation and collision prevention.

Abstract: A guide-type actuator assembly is disclosed, which includes a guiding actuator member having a body and at least one corresponding actuating section. The body is used to couple with a first object and cause a second object to move relative to the at least one corresponding actuating section. With these arrangements, at least two objects can be quickly connected together and easily disconnected from one another.

Abstract: A movably handle fixing structure including a base and a handle is introduced. The base includes a connecting portion for being coupled to a first object; and the handle is movably coupled to the base and has an operating portion, a fastening portion and an abutting portion. The operating portion is configured on one end of the handle, the fastening portion is configured on the other end of the handle, the abutting portion extends at a bottom of the other end of the handle, and the abutting portion is corresponding to the fastening portion. The abutting portion is pushed by a second object such that the fastening portion is driven to be fastened to the second object; or the fastening portion and the abutting portion are driven by the operating portion to move such that the second object is unfastened.

Abstract: A fastener structure includes a body portion, a control portion and a fastening portion. The control portion is movably fitted to the body portion. The control portion has a head portion and a limiting portion. The fastening portion is movably disposed at the body portion. The limiting portion is adapted to limit the fastening portion. Therefore, the body portion is disposed at the second object, and the control portion causes the fastening portion to be coupled to or separated from the first object, so as to couple together and separate at least two objects repeatedly and rapidly.

Abstract: A fastening apparatus includes a body; a fastener movably disposed at the body; and a resilient component disposed at the body, the resilient component having an end abutting against the body and another end abutting against the fastener such that the resilient component allows the fastener to be protruded from or inserted into the body normally, or the fastener in rotation and the resilient component interact with each other to effectuate limiting-stopping, interfering-stopping or interfering-abutting. The fastener enters the body disposed on the first object and compresses the resilient component. Then, the resilient component protrudes the fastener out of the body, thereby fastening the fastener to the second object quickly. Easy separation of the first and second objects entails moving the fastener into the body. A fastening method for the fastening apparatus is further introduced.

Abstract: A method of fitting a fastener to an object is introduced. The fastener has a weldable surface and an engaging portion or a hole portion. One end of the hole portion or one end of the engaging portion has a holding portion. During a welding heating process, solder flows into or enters the holding portion and then cools down and solidifies therein so as to be held therein. Therefore, the weldable surface and the holding portion together enable the fastener to be firmly coupled to an object. The engaging portion and the hole portion together enable an object to be coupled to or removed from another object, so as to couple together and separate at least two objects repeatedly and quickly.

Abstract: A quick release connecting device includes an actuating retainer and a fixing member movably assembled to the actuating retainer. The fixing member includes a pivot portion and a pivot member movably mounted to the pivot portion; and the pivot member is coupled with a second object. The fixing member includes a limiting section and the pivot member includes a corresponding limiting section, such that the limiting section and the corresponding limiting section limit or stop each other at a specific location when the fixing member is moved or rotated. With these arrangements, the quick release connecting device can be applied to conveniently and repeatedly connect and separate a circuit board, a drawer, or a window to and from a corresponding rack, chassis, cabinet or window frame.