Abstract: A resonant vibration actuator is provided, comprising: a casing, a mover, a plurality of electromagnet sets, two elastic suspensions, and a connecting circuit; the casing is provided with connection terminals for connection on the outside; the mover comprising: a mover frame, a plurality of permanent magnet units, two magnetic backs, the permanent magnet units and the magnetic backs being arranged in the mover frame; the electromagnet sets being arranged between two permanent magnet units of the mover; the elastic suspensions being connected to the casing and the mover respectively through two connection portions at both ends; the connecting circuit being used to connect the electromagnet set and the connection terminals outside the casing; wherein, by energizing the electromagnet set, the electromagnet acts on the permanent magnet unit to make the mover move relatively in the casing to generate vibration.

Abstract: A handlebar shock absorbing device includes a sleeve in which a tube is co-rotatably inserted. A rod is inserted into the tube. A first spring is axially received in the sleeve and contacts the tube. A second spring is located in the tube and located between the rod and a cap on top of the tube. The first and second springs absorb shocks transferred to the handlebar.

Abstract: A pressure-balanced shock absorber has an outer tube, an inflatable base, a piston tube, a valve adjusting rod, a piston base, an inner tube, and an adjusting resilient element. The inflatable base has a valve passage and a first valve core. The first valve core selectively seals the valve passage. The piston tube communicates with the valve passage. The valve adjusting rod is movably mounted in the valve passage of the inflatable base and the valve tube. The piston base is connected to the piston tube and has a piston passage. A second valve core selectively seals the piston passage. The inner tube is mounted around the piston tube. The piston base divides the inner tube into a first air chamber and a second air chamber. The adjusting resilient element is disposed in the piston tube to achieve the effect of inflating two air chambers.

Abstract: A pressure-balanced shock absorber has an outer tube, an inflatable base, a piston tube, a valve adjusting rod, a piston base, an inner tube, and an adjusting resilient element. The inflatable base has a valve passage and a first valve core. The first valve core selectively seals the valve passage. The piston tube communicates with the valve passage. The valve adjusting rod is movably mounted in the valve passage of the inflatable base and the valve tube. The piston base is connected to the piston tube and has a piston passage. A second valve core selectively seals the piston passage. The inner tube is mounted around the piston tube. The piston base divides the inner tube into a first air chamber and a second air chamber. The adjusting resilient element is disposed in the piston tube to achieve the effect of inflating two air chambers.

Abstract: A hidden adjustable seat tube device for a bicycle has a lower tube assembly and an upper tube assembly. The lower tube assembly has a first rod and a driving element. The first rod has a mounting groove that is defined in an inner surface of the first rod. The driving element is mounted rotatably on the first rod. The upper tube assembly is mounted movably in the lower tube assembly. A manipulator is connected to the driving element. A transmission cable is mounted through the mounting groove and mounted in the manipulator and the driving element respectively. A retractable element is mounted inside the upper tube assembly, and abuts the driving element. The transmission cable is hid inside the lower tube assembly to organize the transmission cable easily and to mount the transmission cable in the bicycle neatly.

Abstract: An adjustable seat post for bicycles has a control assembly, an installing tube assembly, a connecting tube assembly, and an adjustable element. The control assembly has a control-wheel and a curved-portion formed on an external surface of the control-wheel. The installing tube assembly is connected to the control assembly. The connecting tube assembly is movably mounted in the installing tube assembly and has a connecting tube. The connecting tube is mounted in the installing tube assembly. The adjustable element is assembled in the connecting tube assembly and has a trigger element formed in a bottom end of the adjustable element and abutting the control-wheel. The curved-portion is arc-shaped, such that the curved-portion abuts the trigger element at one point of contact. Therefore, the contact area between the control-wheel and the trigger element is minimized.

Abstract: A hidden adjustable seat tube device for a bicycle has a lower tube assembly and an upper tube assembly. The lower tube assembly has a first rod and a driving element. The first rod has a mounting groove that is defined in an inner surface of the first rod. The driving element is mounted rotatably on the first rod. The upper tube assembly is mounted movably in the lower tube assembly. A manipulator is connected to the driving element. A transmission cable is mounted through the mounting groove and mounted in the manipulator and the driving element respectively. A retractable element is mounted inside the upper tube assembly, and abuts the driving element. The transmission cable is hid inside the lower tube assembly to organize the transmission cable easily and to mount the transmission cable in the bicycle neatly.

Abstract: A fixing structure for a lamp holder contains: a locking mount, a retaining seat, and a lampshade. The locking mount includes a conical tab extending outwardly from a bottom thereof, and the conical tab has inner threads for screwing with a bulb. The retaining seat includes a positioning ring, a plurality of retainers arranged around the positioning ring, and two oppositely flexible clampers extending outwardly from the positioning ring. The lampshade includes a top face for retaining with the two oppositely flexible clampers. Accordingly, the conical tab is fixed in the positioning ring and is retained by the plurality of retainers, and the retaining seat is placed into the lampshade from the top face so that its two oppositely flexible clampers clamp the locking mount and retain with the top face, thereafter the bulb is screwed with the locking mount, thus connecting the locking mount with the lampshade easily.

Abstract: An adjustable seat post for bicycles has a control assembly, an installing tube assembly, a connecting tube assembly, and an adjustable element. The control assembly has a control-wheel and a curved-portion formed on an external surface of the control-wheel. The installing tube assembly is connected to the control assembly. The connecting tube assembly is movably mounted in the installing tube assembly and has a connecting tube. The connecting tube is mounted in the installing tube assembly. The adjustable element is assembled in the connecting tube assembly and has a trigger element formed in a bottom end of the adjustable element and abutting the control-wheel. The curved-portion is arc-shaped, such that the curved-portion abuts the trigger element at one point of contact. Therefore, the contact area between the control-wheel and the trigger element is minimized.

Abstract: A generator for a bicycle has a frame, a mounting bracket and a disk. The frame has an axle. The mounting bracket is mounted on the frame and has an open slot and at least one stator mounted in the open slot and each of the at least one stator having a coil mounted around a cylinder. The disk is mounted rotatably on the axle, rotatably engages the open slot and has a center and multiple permanent magnets. The permanent magnets are mounted on the disk, arranged circularly relative to the center and selectively move into the open slot to align the at least one stator so that induced current is generated by rotating the disk in the open slot. The generator generates electricity for electronic devices on the bicycle.

Abstract: A dynamo and power supply management device for bicycles includes a rectification and filter circuit connected with a dynamo, an electronic switch set connected between the rectification and filter circuit and a load, a control unit controlling the electronic switch set between on and off, a voltage measurement unit connected with an output terminal of the rectification and filter circuit, and an energy storage module connected to the dynamo and the load through the electronic switch set. The energy storage module is composed of multiple energy storage units. The control unit determines the energy storage unit to be charged based on a built in charge and discharge parameter table and the power generated by the dynamo and selects an energy storage unit to supply power to the load, thereby fully utilizing the power generated by a bicycle and enhancing the operation efficiency.

Abstract: A LED lamp includes at least one LED unit, a thermally-conductive post, a heat-dissipating module, at least one metal base, at least one cover member, at least one light reflection member, a sheath, a foundation, and a printed circuit board (PCB). The heat-dissipating module is provided with a plurality of heat sinks, each of which has one end serially connected to each other and radially arranged on an outer periphery of the thermally-conductive post, and the other end apart from each other, so as to constitute the heat-dissipating module. The sheath is used to surround and position the heat sinks, so that the heat sinks are confined. The LED unit is mounted on the metal base, which is received in a step portion formed on a central portion of each of the heat sinks. The light reflection member is provided with a curved focusing portion for focusing a light source projected by the LED unit following by outputting the light source via the cover member.

Abstract: A shock absorber for a bicycle is mounted between a front stem and a front fork of the bicycle, provides a damping effect and has a leading assembly and a sliding assembly. The leading assembly has a leading rod. The leading rod is mounted slidably in the tubular front stem, is attached securely to and protrudes up from the front fork and has a keyed segment. The sliding assembly is mounted securely on the front stem, is mounted slidably around the leading rod and has a bearing. The bearing is mounted rotatably in the front stem, corresponds to, engages and is mounted slidably around the keyed segment of the leading rod. Consequently, having the keyed segment and the bearing corresponding to and engaging each other allows the shock absorber to reduce vibration and react promptly while the bicycle is ridden.

Abstract: A LED lamp includes at least one LED unit, a thermally-conductive post, a heat-dissipating module, at least one metal base, at least one cover member, at least one light reflection member, a sheath, a foundation, and a printed circuit board (PCB). The heat-dissipating module is provided with a plurality of heat sinks, each of which has one end serially connected to each other and radially arranged on an outer periphery of the thermally-conductive post, and the other end apart from each other, so as to constitute the heat-dissipating module. The sheath is used to surround and position the heat sinks, so that the heat sinks are confined. The LED unit is mounted on the metal base, which is received in a step portion formed on a central portion of each of the heat sinks. The light reflection member is provided with a curved focusing portion for focusing a light source projected by the LED unit following by outputting the light source via the cover member.

Abstract: A lamp assembly includes two juxtaposed electric cords, and a plurality of lamps each mounted on the electric cords. Each of the lamps includes a lamp holder, and a lamp cover. The lamp cover has an inside formed with two receiving grooves. Thus, the distal ends of the electric cords are received in the receiving grooves of the lamp cover to prevent the distal ends of the electric cords from being exposed outwardly. In addition, the lamp cover has a periphery formed with a plurality of flattened edges to define a plurality of gaps between the lamp cover and the lamp holder to provide water draining and air ventilating effects.

Abstract: An activation device for a damper includes a stopping tube adapted to be securely received in the piston rod and having grooves defined in a peripheral edge of the stopping tube and first teeth formed on the peripheral edge of the stopping tube, a driving tube adapted to be movably received in the piston rod and in the stopping tube and having second teeth formed on a peripheral edge of the driving tube, and a rotating tube adapted to be movably received in the piston rod and having third teeth engaged with the second teeth so that the movement of the driving tube is able to drive the rotating tube to rotate an angle to selectively allow a corresponding one of the third teeth to be received in the grooves such that communication between the axial passage and the space is selectively plugged.

Abstract: An activation device for a damper includes a stopping tube adapted to be securely received in the piston rod and having grooves defined in a peripheral edge of the stopping tube and first teeth formed on the peripheral edge of the stopping tube, a driving tube adapted to be movably received in the piston rod and in the stopping tube and having second teeth formed on a peripheral edge of the driving tube and a rotating tube adapted to be movably received in the piston rod and having third teeth engaged with the second teeth so that the movement of the driving tube is able to drive the rotating tube to rotate an angle to selectively allow a corresponding one of the third teeth to be received in the grooves such that communication between the axial passage and the space is selectively plugged.

Abstract: An activation device for a damper includes a stopping tube adapted to be securely received in the piston rod and having grooves defined in a peripheral edge of the stopping tube and first teeth formed on the peripheral edge of the stopping tube, a driving tube adapted to be movably received in the piston rod and in the stopping tube and having second teeth formed on a peripheral edge of the driving tube and a rotating tube adapted to be movably received in the piston rod and having third teeth engaged with the second teeth so that the movement of the driving tube is able to drive the rotating tube to rotate an angle to selectively allow a corresponding one of the third teeth to be received in the grooves such that communication between the axial passage and the space is selectively plugged.

Abstract: A shock absorber adapted for a bicycle front fork includes a bolt, a driving rod extending into and securely received in an open end of the bolt, two resilient elements movably mounted around the bolt and a knob securely engaged with a free end of the driving rod to drive the driving rod and the bolt to rotate such that the two resilient elements are extended or compressed on the bolt in opposite directions.

Abstract: A lapping arrangement for a tungsten filament to prevent the self-contact and short-circuit of the tungsten filament in a light bulb comprising one or more pairs of posts in the form of molybdenum wire with the tungsten filament lapping on the posts. The angle at the lapping posts between a section of the tungsten filament and an adjacent section is equal to or greater than 90°.