Abstract: A torque screwdriver includes: a main body having a transverse handle section and a vertical tubular section, the handle section being formed with an internal passage having two cavities respectively formed on two sides of the tubular section; the tubular section being formed with an internal axial space; an operation stem, several ratchets and several recesses being disposed at a top end of the operation stem, each ratchet having a long tooth face and a short tooth face, the long tooth face having a slope smaller than a slope of the short tooth face; the operation stem being mounted in the main body; two elastic abutment assemblies respectively mounted in the two cavities to elastically press two abutment members to elastically contact the operation stem; and at least two support rings disposed between the operation stem and the main body.

Abstract: A pivot head wrench includes a handle, a head, a pivot pin, a linear motion mechanism and a lock mechanism. The pivot pin connects the handle and the head. The linear motion mechanism is disposed at the handle and includes a moving path, wherein the head is disposed in the moving path. The lock mechanism includes a groove and at least one protrusion, wherein one of the groove and the protrusion is disposed at the head while the other is disposed at the linear motion mechanism for engaging with each other, and the protrusion and the groove both are disposed in the moving path.

Abstract: A threaded member capable of detecting tension includes a sensor component. A receiving space is formed in the threaded member. The sensor component has a flexible member and a sensor. The sensor is disposed on the flexible member. The sensor component is disposed in the receiving space of the threaded member and preset in a compressed/flexed state in an axial/longitudinal direction of the threaded member. When an article is tightened with the threaded member, the threaded member is tensioned to change the flexion of the flexible member. At this time, the sensor can detect and find the tension of the threaded member to achieve the tightening force applied to the threaded member.

Abstract: A nut includes a thread portion and a pressing portion. The thread portion is formed at an end of the nut. The thread portion includes a threaded inner wall surface for engaging with a screwing shaft of a screwing piece. The pressing portion is extended from the thread portion and formed at the other end of the nut. A wall thickness of the pressing portion is smaller than a wall thickness of the thread portion. An outer wall surface of the pressing portion is aligned with an outer wall surface of the thread portion.

Abstract: A torque wrench includes a hollow body, a clutch mechanism, a force-applying member, and driving arms. The clutch mechanism is mounted in the hollow body. The force-applying member is pivotally mounted in the hollow body. Each of driving arms has a coupling end is detachably mounted at the second end of the force-applying member and a driving end for driving a workpiece, wherein each of the driving arms is coaxial to the force-applying member when the coupling end thereof is mounted at the second end of the force-applying member, and wherein the interchangeable driving arms are different in length from each other.

Abstract: A wrench includes a handle, a first driver, and a second driver. The first driver and the second driver are integrally connected to two ends of the handle respectively. An angle between a driving axis of the first driver and a central axis of the handle is ?, an angle between one opening end of the first driver and the handle is ?, an angle between a driving axis of the second driver and the central axis of the handle is ?, and an angle between one opening end of the second driver and the handle is ?. The angle ? and the angle ? are located at two sides of the central axis of the handle respectively. The other opening end of the first driver and the other opening end of the second driver are horizontally connected to the handle respectively.

Abstract: A torque warning hand tool includes a main body with one drive head, and a torque detector, a control display device and a warning unit disposed on the main body and electrically connected to each other. The control display device is used to set a preset value and receive a torque value from the torque detector to compare the torque value with the preset value. The warning unit has a first, a second and a third warning modes respectively corresponding to three colored light sources. After compared, according to the warning mode in which the torque value falls, the control display device drives the different colored light sources to emit corresponding colors for an operator to identify the torque extent applied to the hand tool.

Abstract: A threaded member capable of detecting tightening force includes a head section, a threaded rod section and at least one strain sensor. The head section has a bottom face, a skirt section and a receiving space. The threaded rod section is disposed under the bottom face of the head section. A sink section is formed on the bottom face of the head section. The strain sensor is disposed on the bottom face of the head section and positioned in the receiving space. Due to the sink section, when the head section is strained and deformed, the strain sensor can sensitively and precisely detect the strain capacity of the head section and provide the tightening force of the threaded member for a user to more precisely tighten the threaded member.

Abstract: A wrench includes a handle, a first driver and a second driver. The first driver and the second driver are integrally connected to the ends of the handle respectively. One opening end of the first driver and one opening end of the second driver are horizontally connected to two ends of the handle respectively. The second driver is hollow tube-shaped and has a plurality of first teeth and a plurality of second teeth located on an inner wall thereof. Two angles are between two opening ends of the second driver and the first teeth and the second teeth respectively, and the angles are from 75 degrees to 105 degrees.

Abstract: A three-protuberance open-end wrench includes a head section. The head section has a first jaw and a second jaw. Two first protuberances are front and rear, side by side, formed on a holding face of the first jaw. A second protuberance is formed on a holding face of the second jaw. A throat is formed between the holding faces of the first and second jaws for receiving a threaded member therein. The protuberances of the first and second jaws serve to hold the threaded member. The protuberances form a non-isosceles triangle.

Abstract: An electronic screw with an electronic torque display is disclosed. The screw includes a body and a torque sensing element. The body has a threading head, a shank connected to the threading head and a recess located on the side wall of the shank. The torque sensing element is disposed in the recess and detected the torque value of the electronic screw. The torque sensing element is electrically connected to the electronic torque display, wherein the electronic torque display displays the torque value that detected from the torque sensing element.

Abstract: A torque wrench with double drive ends includes a handle having at least two hollow tubular bodies coaxially connected with each other, two drive heads respectively disposed at two ends of the handle, and a double torque adjustment mechanism including at least one adjustment member, two slide blocks and two elastic members. The two slide blocks are movable within the two tubular bodies. The adjustment member is positioned between the two slide blocks for driving the two slide blocks. The two elastic members are respectively positioned between the two slide blocks and the tubular bodies. By means of the adjustment member, the elastic force applied by the elastic members to the drive heads the can be adjusted to set the torque values thereof.

Abstract: An electronic socket is provided. The electronic socket includes a body, a strain gauge, an electronic control module, and a display unit. The body has a driving groove and a passive groove. The driving groove and the passive groove are connected to each other through a channel, wherein the body includes a containing space located on an outside and a recessed groove located in the containing space corresponding to the channel. The strain gauge is disposed in the recessed groove. The electronic control module and a display unit are disposed in the containing space, and the display unit is for showing a data sensed by the electronic control module which obtains from the strain gauge.

Abstract: An electronic torque wrench includes a main body, a display device and at least one pushbutton module. A torque detector is disposed on the main body in adjacency to a working head for outputting a torque value. The display device has an operation unit and a display panel. The pushbutton module is for setting a torque value. The pushbutton module and the torque detector are electrically connected to the operation unit. The operation unit serves to receive and process the torque value to display the torque value on the display panel. The display panel and the pushbutton module are respectively disposed on a top side and a lateral side of the main body.

Abstract: A medical electric drill includes a drilling head, a microprocessor, a pressure sensor unit, a torque sensor unit and a gravity sensor unit. The drilling head is for drilling a bone. The microprocessor is signally connected to the drilling head for calculating a displacement of the drill. The pressure sensor unit is for detecting a pressure change and provides a pressure change signal to the microprocessor. The torque sensor unit is for detecting a torque change and provides a torque change signal to the microprocessor. The gravity sensor unit is for detecting an acceleration variation of the drilling head and provides an acceleration voltage signal to the microprocessor. The microprocessor determines a work period of drilling the bone according to the pressure change signal and the torque change signal, and then the microprocessor calculates the displacement of the drilling head by using the acceleration voltage signal during the work period.

Abstract: An anti-loosening nut is formed with a threaded hole. The wall of the threaded hole is formed with at least one receiving cavity formed on the wall of the threaded hole in an axial direction of the threaded hole. At least one holding member is mounted in the receiving cavity of the nut. The holding member is disposed in the receiving cavity of the nut in the axial direction of the nut. When the nut is screwed onto a screw/bolt, the holding member elastically holds the screw/bolt, whereby the nut and the screw are elastically tightened with each other to avoid loosening of the nut.

Abstract: A collapsible torque wrench includes: a shank having a drive head at a front end and two pivoted ends at a rear end; a connection rod, a front end of which being pivotally connected with the first pivoted end; a housing having a tubular body and a casing fixedly disposed on one side of the tubular body, the connection rod being relatively slidably fitted in the tubular body; a torque adjustment mechanism being mounted in the tubular body and including a fixing block, the fixing block being mounted in the tubular body by at least two pins; and a stop member received in the casing. A front end of the stop member is pivotally connected with the second pivoted end. The fixing block is easily demounted from the tubular body for replacement.

Abstract: A torque wrench includes a mechanical structure and an electronic structure. The mechanical structure includes a tubular body, a flexible rod, an abutment member, an elastic member, a trip mechanism, an adjustment mechanism and a mechanical scale indication mounted in the tubular body for indicating the set torque of the wrench. The electronic structure includes at least one torque sensor and a display unit. When correcting the torque value of the mechanical structure, a force is applied to the wrench and the torque sensor detects the trip torque value of the wrench. The torque value of the mechanical structure is adjusted to match the torque value detected by the torque sensor so as to eliminate the error of the torque value of the mechanical structure.

Abstract: A clamping structure for a tool is provided. The clamping structure includes a plurality of grooves and an inner surface. The inner surface includes two inclined planes. Two convex arcs are connected to the inclined planes. Two concave arcs are connected to the inclined planes, and a middle salient connects one of the concave arcs to the other of the concave arcs. Wherein, an angle between a hypothesized extension line of one of the inclined planes and a hypothesized central line of one of the grooves is 40 degrees-50 degrees. Whereby, the clamping structure is easy to grip a damaged bolt or a damaged nut.

Abstract: A manufacturing method of an elastic C-shaped steel block is described, which includes the following steps. An ordinary steel is cut into a round steel tube. The round steel tube is processed into a ratchet hex socket steel tube. The ratchet hex socket steel tube is cut into a ratchet hex socket block. The ratchet hex socket block is transformed into an elastic ratchet hex socket block by a thermal treatment. An opening is formed in the elastic ratchet hex socket block to change the elastic ratchet hex socket block into a C-shaped elastic steel block.