Abstract: Manufacturing steps for manufacturing a hand tool include a step of preparing a base part which has a handle end and a head end; a step of molding: placing the base part in a molding device and coating plastic to the whole base part by way of plastic injection molding to form the base part into a semi-product which has a handle portion and a head portion, an installation hole defined through the head portion; a step of coating: electro-coating a material to outer surface of the plastic of the semi-product, and a step of assembly: assembling a ratchet driving unit in the installation hole by using fixing members so as to obtain a final product.

Abstract: A ratchet wrench includes a wrench body, a ratchet wheel and a C-ring. The wrench body has a working end defining a stepped hole. The stepped hole includes an outer large-diameter portion, an inner small-diameter portion and a shoulder disposed at a junction of the large-diameter portion and the small-diameter portion. The ratchet wheel is rotatably mounted in the stepped hole of the wrench body, and has a row of teeth therearound and a flange located proximate to the teeth. The flange rests upon the shoulder of the stepped hole. The C-ring is placed around the ratchet wheel and rests upon an upper surface of the flange of the ratchet wheel. Moreover, the C-ring is configured and sized to be detachably engaged in an annular groove defined in an inner wall of the large-diameter portion of the stepped hole for retaining the ratchet wheel within the stepped hole of the working end of the wrench body.

Abstract: A coating structure for forming a tool comprises a tool body and an outer coating layer. The tool body includes at least one base plate, an upper limiting plate, a lower limiting plate, a ratchet driving member, a stirring member, and at least one pin. The base plate has a handle portion and a driving portion which is connected with one end of the handle portion. An accommodating groove is arranged at the driving portion and received the ratchet driving member and the stirring member. The upper and lower limiting plates are stacked on the upper and lower surfaces of the driving portion respectively. The outer coating layer is covered the outer surfaces of the upper and lower limiting surfaces and the base plate for fastened so as to prevent the outer coating layer from sliding while in operation. The operating quality is efficiently increased and the cost is saved.

Abstract: A display unit includes a plate and a ring. The ring has a through hole with which a security member has the first end thereof is engaged. The second end of the security member extends beyond the through hole. The security member is pivotable relative to the through hole. An insertion hole is defined in the second end of the security member so as to receive a hand tool therein. One of sidewalls of the insertion hole has an opening. A restriction member is connected to the security member and has an engaging portion which extends through the opening and located in the insertion hole. The engaging portion is inserted into a gap between a bead and a reception hole for receiving the bead of the handle tool. The engaging portion is deeply inserted into the gap when the hand tool is pulled away from the ring.

Abstract: A socket wrench includes a wrench body, a driving seat and a retaining ring. The driving seat disposed in a head of the wrench body, and has a central hole, an aperture defined in and through an inner wall of the central hole, and a cutout defined in an outer periphery thereof. The retaining ring mounted around the driving seat has a hook portion and a straight leg. The hook portion has a distal end extending through the aperture of the driving seat. The straight leg is rested in the cutout of the driving seat. The straight leg has a distal end extending outside the cutout. The straight leg could be operated to an open position where the distal end of the hook portion is retracted in the aperture of the driving seat.

Abstract: A socket wrench includes a wrench body, a ratchet wheel and a positioning ring. The ratchet wheel has a driving hole and a cylindrical flange extending on one side of the wrench body. The cylindrical flange defines in an outer periphery at least one aperture communicating with the driving hole. The positioning ring is mounted around the cylindrical flange, and has a central bore and at least one protrusion radially protruded from an wall of the central bore of the positioning ring. The protrusion is projected from a wall of the driving hole through the aperture to position a socket.

Abstract: A ratchet wrench includes a wrench body and a ratchet assembly disposed in the wrench body. The ratchet assembly includes a ratchet wheel, a Y-shaped bar, two pawls, a pawl spring and a switch member. The Y-shaped bar has a pair of prongs splayed laterally apart. Each of the pawls is engageable with the ratchet wheel and defines a bore in a lower corner thereof for reception of the respective prong of the Y-shaped bar. The pawl spring is disposed between the pawls. The switch member is partly positioned on an exterior of the wrench body, and operable to drive the Y-shaped bar to direct either one of the pawls to engage with the ratchet wheel.

Abstract: A ratchet wrench includes a wrench body, a ratchet gear, a pawl and a switch assembly. The pawl has a central tooth, multiple first sub teeth and multiple second sub teeth in a concave surface thereof. Each of the first sub teeth and the second sub teeth has an inner side face abutting against opposing tooth face of the ratchet gear and an outer side face spaced apart from opposing tooth face of the ratchet gear. The first sub teeth and the second sub teeth are located symmetrical relative to the central tooth. The center of the concave surface of the pawl and the center of the ratchet gear are located on a common line that passes through the center of the central tooth of the pawl. The switch assembly is movably disposed in the head of the ratchet wrench for driving the pawl to engage with the ratchet gear.

Abstract: A ratchet wrench includes a wrench body, a ratchet wheel and a C-ring. The wrench body has a working end defining a stepped hole. The stepped hole includes an outer large-diameter portion, an inner small-diameter portion and a shoulder disposed at a junction of the large-diameter portion and the small-diameter portion. The ratchet wheel is rotatably mounted in the stepped hole of the wrench body, and has a row of teeth therearound and a flange located proximate to the teeth. The flange rests upon the shoulder of the stepped hole. The C-ring is placed around the ratchet wheel and rests upon an upper surface of the flange of the ratchet wheel. Moreover, the C-ring is configured and sized to be detachably engaged in an annular groove defined in an inner wall of the large-diameter portion of the stepped hole for retaining the ratchet wheel within the stepped hole of the working end of the wrench body.

Abstract: A ratchet wrench includes a wrench body, a ratchet assembly and a C-ring. The wrench body has a driving head at one end. The driving head has a cavity therein and a retaining groove defined in an inner periphery of the cavity. The ratchet assembly is mounted in the cavity of the driving head. The C-ring is configured to retain the ratchet assembly in place and defines an outer portion and an inner portion. The C-ring has two free ends, and at least one of the two free ends has an oblique face with a pointed edge towards an inside of the C-ring, which is allowed to pry the C-ring moving inward to be detached.

Abstract: A ratchet wrench includes a handle, a driving head, an engaging member, a spring and a controlling knob. The handle has a receiving groove, a transverse hole in one lateral side of the handle, and a longitudinal hole in a bottom of the receiving groove. The driving head has a connecting portion pivotally connected to the handle. The engaging member is movably received in the longitudinal hole, and has a guiding cutout in a lateral side thereof. The spring is interposed between a bottom of the longitudinal hole and the engaging member. The controlling knob has an abutting block received in the guiding cutout of the engaging member. The abutting block is substantially oblong in shape such that rotational movement of the controlling knob drives the engaging member to be disengaged from the driving head.

Abstract: The present invention provides a power-factor converter with nonlinear conversion ratio, wherein the power-factor converter includes a first inductor, a second inductor, a rectifier circuit and a switch circuit. The switch circuit is arranged to be switched to form a circuit equivalent to a parallel connection of the first inductor and the second inductor during an inductor-charging-phase for charging the first inductor and the second inductor in parallel by an AC power source, and form a circuit equivalent to a series connection of the first inductor L1 and the second inductor L2 during an inductor-discharging-phase for discharging the first inductor and the second inductor to the rectifier circuit in series.

Abstract: A wrench device with a plurality of driving holes includes a wrench body having two first through holes, each first through hole having an opening end and a positioning end which having two positioning grooves defined thereon, the two positioning grooves corresponding to each other, two actuating member having two driving holes and a positioning block, each driving hole having a first ratchet ring and a second ratchet ring, each positioning block passing through each corresponding first through hole, each positioning block having a positioning slice, a flexible assembly received into the positioning block. Under this arrangement, a user rotates the actuating member relative to the wrench body so as to change the driving hole, so that the user unlocks the screws with different size rapidly and easily.

Abstract: A ratchet wrench includes a handle having a hole in which a driving unit is located. A control member is partially engaged with the hole and connected to the top of the driving unit. The driving unit has a pawl engaged with the toothed face of the hole of the handle. A bead is movably received in the protrusion of the driving unit and cooperated with an operation rod. The operation rod is connected with a positioning unit located in the circular recess of the control member. The positioning member has a nut, a spring and a press disk. The nut is connected to the connection rod. A flange extends from the top of the nut. The spring is engaged between the flange and the press disk which is movable within the circular recess. A locking member extends through the press disk and is connected to the operation rod.

Abstract: A ratchet wrench includes a handle, a driving head, an engaging member, a spring and a controlling knob. The handle has a receiving groove, a transverse hole in one lateral side of the handle, and a longitudinal hole in a bottom of the receiving groove. The driving head has a connecting portion pivotally connected to the handle. The engaging member is movably received in the longitudinal hole, and has a guiding cutout in a lateral side thereof. The spring is interposed between a bottom of the longitudinal hole and the engaging member. The controlling knob has an abutting block received in the guiding cutout of the engaging member. The abutting block is substantially oblong in shape such that rotational movement of the controlling knob drives the engaging member to be disengaged from the driving head.

Abstract: A wrench device includes a first handle and a second handle. The first handle has a pivotal connecting segment and a driving head defined at two ends thereof respectively. The pivotal connecting segment has a groove defined around an outer periphery thereof. The second handle has a pivotal connecting recess and a driving part defined at two ends thereof respectively. The pivotal connecting segment of the first handle is pivotally inserted into the pivotal connecting recess of the second handle. The second handle has a side screwed hole opened on a surface therethrough. The side screwed hole communicates with the pivotal connecting recess and corresponds to the groove. A position member is screwed into the side screwed hole. Therefore, when either the driving head or the driving part is broken, the first handle and the second handle can be separated by unscrewing the position member from the side screwed hole.

Abstract: A hand tool with angle adjusting mechanism includes a handle, a driving head, an engaging assembly and a button. The handle has a receiving groove in one end thereof, a transverse hole and a longitudinal hole in communication with the transverse hole. The driving head has a connecting portion disposed in the receiving groove of the handle. The engaging assembly has an engaging member and a spring disposed in the longitudinal hole of the handle. The engaging member has an engaging tooth at a top thereof for engagement with the driving head, and has an inclined groove in a lateral side thereof. The button is movably disposed in the transverse hole of the handle, and has an abutting portion slidably inserted in the inclined groove of the engaging member such that horizontal movement of the button drives the engaging member to move longitudinally along the longitudinal hole of the handle.

Abstract: A socket wrench includes a wrench body, a driving seat and a retaining ring. The driving seat disposed in a head of the wrench body, and has a central hole, an aperture defined in and through an inner wall of the central hole, and a cutout defined in an outer periphery thereof. The retaining ring mounted around the driving seat has a hook portion and a straight leg. The hook portion has a distal end extending through the aperture of the driving seat. The straight leg is rested in the cutout of the driving seat. The straight leg has a distal end extending outside the cutout. The straight leg could be operated to an open position where the distal end of the hook portion is retracted in the aperture of the driving seat.