Abstract: A quick release device of a ratchet wrench includes a rotary ring rotatably mounted to a positioning member on the head of the wrench. When the rotary ring is rotated, a movable plate is driven to a positioning position or a releasing position. When the movable plate is located at the engaging position, a contact portion of the movable plate is engaged with one of multiple recessed portions of the rotary ring, and an engaging portion of the movable plate is engaged with a groove of a socket that is connected to the ratchet wheel of the wrench. When the movable plate is located at the releasing position, the contact portion contacts with one of the protrusions of the rotary ring, and the engaging portion is disengaged from the groove of the socket so that the socket can be quickly removed from the wrench.

Abstract: A connection device of a ratchet wrench includes a connection portion extending from the head of a ratchet wrench and having a receiving hole. A tool part includes a ball head and a driving portion which is connected to the ball head by a neck. The ball head includes multiple curved faces, and a ridge is formed between any two adjacent curved faces. A clutch device is mounted to the connection portion to secure or release the ball head of the tool part relative to the receiving hole of the connection portion. The ball head of the tool part allows the tool part to be tilt relative to the head of the wrench.

Abstract: A display panel including a pixel array substrate, an opposite substrate, and a display media is provided. The pixel array substrate includes a substrate, a plurality of scan lines, a plurality of data lines, a plurality of pixel units, and a gate driving circuit. The gate driving circuit including a plurality of first signal lines, a plurality of second signal lines, a plurality of dummy signal lines, and a plurality of contact structures is disposed in a peripheral region of the substrate. Each of the second signal lines is electrically connected to one corresponding first signal line. Each of the dummy signal lines is electrically connected to one corresponding second signal line via one corresponding contact structure. Each of the first signal lines is electrically connected to the corresponding second signal line via one corresponding contact structure.

Abstract: A ratchet wrench includes a head in which a driving wheel and a pawl are received therein. The pawl includes teeth to be engaged with the driving wheel. A switch device includes a shank, a spring and a rod. The shank is rotatably received in a receiving hole in the head, and has a notch in which the spring and the rod are received. The rod is pushed by the spring and movably engaged with the recess in the rear side of the pawl. A protrusion is formed on the shank, and includes two shoulders formed on two ends thereof. The recess of the pawl includes contact ends. When the shank is pivoted, one of the two shoulders applies a force to the inner wall of the recess and one of the two contact ends to move the pawl to be engaged with the driving wheel.

Abstract: A display unit includes a plate and a ring. The ring has a through hole with which a first end of a security member 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. The security member includes an opening communicating with the insertion hole. An L-shaped restriction member is connected to a slit defined in the first end and the outside surface of the security member. The restriction member has an engaging portion which extends through the opening and inserted into a gap between a bead and a reception hole for receiving the bead of the hand tool to prevent the hand tool from being separating from the ring.

Abstract: A ratchet wrench includes a head with a ratchet wheel rotatably received in a through hole defined through the head. A lateral hole is defined laterally through the wall of the head and communicates with the through hole. A contact portion protrudes inwardly from the inner periphery of the lateral hole so as to reduce the diameter of one end of the lateral hole. A pawl, a spring and a contact member are received in the lateral hole. The spring is biased between the pawl and the contact member, and the pawl is engaged with the ratchet wheel. The contact member is a disk and stopped by the contact portion so that the pawl, the spring and the contact member do not drop from the lateral hole without using a bolt.

Abstract: A wrench includes a handle with a recess that opens through a periphery and an end face of the handle. An extension unit is pivotably connected to the recess by a pivot. The extension unit includes two bars and each bar has a clamp portion and an insertion portion. The insertion portion is pivotably connected to the recess by the pivot, and the clamp portions are pivotably connected to a driving head therebetween. The extension unit is pivotable relative to the handle so that the wrench is used in different ways.

Abstract: A chuck assembly includes a chuck having a cross-shaped installation hole defined therethrough. A toothed disk is connected to the chuck and exposed from the outer periphery of the chuck. A driving unit includes a shaft and a gear which is mounted to the shaft. The driving unit is installed in the installation hole. The shaft includes two threaded sections respectively formed on two ends thereof. Two pawls each have threaded hole which is threadedly connected to the threaded section of the shaft corresponding thereto. When the gear is rotated to rotate the shaft, the two threaded sections are rotated to move the two pawls to move toward each other or away from each other.

Abstract: A driving circuit including an output circuit, a pull-down module, conductive wires, at least one first signal line, and a buffer layer is provided. The conductive wires are electrically connected between the output circuit and the pull-down module. The output circuit and the pull-down module are electrically coupled to a driving control signal through the first signal line. A first overlapping region is located between the first signal line and a portion of the conductive wires. The buffer layer is disposed between the first signal line and the portion of the conductive wires. The buffer layer includes an overlapping portion and an extending portion. The overlapping portion is at least disposed in the first overlapping region. The extending portion is disposed outside the overlapping portion. A thickness of the overlapping portion is greater than a thickness of the extending portion. A display panel is also provided.

Abstract: A display unit includes a plate and a ring. The ring has a through hole with which a first end of a security member 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. The security member includes an opening communicating with the insertion hole. An L-shaped restriction member is connected to a slit defined in the first end and the outside surface of the security member. The restriction member has an engaging portion which extends through the opening and inserted into a gap between a bead and a reception hole for receiving the bead of the hand tool to prevent the hand tool from being separating from the ring.

Abstract: A torque wrench includes a main tube having a driving head and a receiving hole on two ends thereof. A ratchet tube is inserted into receiving hole and has multiple elongate positioning recesses. A passage is defined axially through the ratchet tube. An operation tube is mounted to the ratchet tube and has a driving section and a holding section, and a connection hole is defined through the driving section and the holding section. The driving section has an engaging hole in which a bead is received. A torque unit is received in the receiving hole, the passage and the connection hole. The torque is set by rotating operation tube. A control tube is mounted to the driving section and has a bolt movable in an L-shaped slot to release and restrict movement of the control tube relative to the operation tube.

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 has at least one aperture defined through the outer periphery thereof and communicating with the driving hole. The positioning ring is an O-shaped ring and surrounded the outer periphery of the cylindrical flange, and has a central bore. At least one protrusion radially protruded from the inner wall of the central bore of the positioning ring. The protrusion is projected from the wall of the driving hole through the aperture to position a socket. The positioning ring is moved a distance along the radial direction relative to the ratchet wheel by being pushed toward the at least one protrusion to completely retract the at least one protrusion into the aperture to release the socket.

Abstract: A torque wrench includes a main tube having a driving head and a receiving hole on two ends thereof. A ratchet tube is inserted into receiving hole and has multiple elongate positioning recesses. A passage is defined axially through the ratchet tube. An operation tube is mounted to the ratchet tube and has a driving section and a holding section, and a connection hole is defined through the driving section and the holding section. The driving section has an engaging hole in which a bead is received. A torque unit is received in the receiving hole, the passage and the connection hole. The torque is set by rotating operation tube. A control tube is mounted to the driving section and has a bolt movable in an L-shaped slot to release and restrict movement of the control tube relative to the operation tube.

Abstract: A ratchet wrench includes a hole in which a driving member and a pawl are received. The pawl is engaged with toothed face of the hole of the head. The driving member has a protrusion. An operation rod extends through the driving member and connected with a positioning unit. A bead is movably received in the protrusion of the driving unit and cooperated with an operation rod. When pushing the positioning unit, the operation rod is moved and the bead is submerged in the protrusion to release or to connect with a socket to the protrusion. The pawl includes a slot that extends in the radial direction of the hole in the head. A control member is rotatably engaged with the hole and includes a stud inserted into the slot. A resilient member is located in the slot and biased between the stud and the inner end of the slot.

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 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: 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.