Abstract: A needle-free connector includes a hollow connector, an elastic block, and a switch assembly. The inner perimeter of the hollow connector forms a first annular wall and a second annular wall. The elastic block is disposed in the hollow connector. The switch assembly has a stop member and a guide tube connected to the stop member, the stop member being pressed between the annular block and the elastic block, the guide tube being disposed in the hollow connector, the external perimeter of the stop member forming a first annular portion against the first annular wall and a second annular portion against the second annular wall, a groove being disposed between the first annular portion and the second annular portion of the stop member, the groove being connected to the guide tube. Thus, the structure stability and closing performance are achieved such that the outside air cannot leak into the connector.

Abstract: A needle free connector includes a tube device having a first tube, a first locking elements formed on a distal end of the first tube and having a transverse channel in communication with the first tube and a push rod integrally formed on a side face of the first locking elements, a resilient frame securely engaged with the first locking elements and having a second ring movably positioned due to movement of the first tube and provided with a hole defined in a bottom face of the second ring to allow the first tube to movably extend therethrough, a hollow casing provided with a second tube to movably receive therein the first tube and a cap securely connected to the hollow casing to form a watertight connection.

Abstract: A steering and positioning structure of a ratchet screwdriver has a main body, ratchet assembly, radial holding tank, two upper snapping blocks in multi-tooth meshed pattern and two downward abutting pieces, as well as an elastic abutting member, revolving drum and revolving drum split positioning member. The upper snapping blocks are activated in tune with the downward abutting pieces, such that the upper snapping blocks can be formed by means of powder metallurgy and demolding. Multiple snapping teeth could be formed on the snapping blocks. As the snapping teeth can mated with the ratchets of the ratchet assembly in multi-tooth meshing pattern, the structure can meet the multi-tooth meshing structural demands for convenient forming, and also improve substantially the torsion of the ratchet screwdriver, enhance the ease-of-operation and mass production for higher economic benefits.

Abstract: A needleless connector includes a hollow connector, a spring, and a switch assembly. The inner perimeter of the hollow connector forms a first annular wall and a second annular wall. The spring is disposed in the hollow connector. The switch assembly has a stop member and a guide tube connected to the stop member, the stop member being pressed between the annular block and the spring, the guide tube being disposed in the hollow connector, the external perimeter of the stop member forming a first annular portion against the first annular wall and a second annular portion against the second annular wall, a groove being disposed between the first annular portion and the second annular portion of the stop member, the groove being connected to the guide tube. Thus, the integral structure stability and good closing performance are achieved such that the outside air cannot leak into the connector structure.

Abstract: A steering and positioning structure of a ratchet screwdriver has a main body, ratchet assembly, radial holding tank, two upper snapping blocks in multi-tooth meshed pattern and two downward abutting pieces, as well as an elastic abutting member, revolving drum and revolving drum split positioning member. The upper snapping blocks are activated in tune with the downward abutting pieces, such that the upper snapping blocks can be formed by means of powder metallurgy and demolding. Multiple snapping teeth could be formed on the snapping blocks. As the snapping teeth can mated with the ratchets of the ratchet assembly in multi-tooth meshing pattern, the structure can meet the multi-tooth meshing structural demands for convenient forming, and also improve substantially the torsion of the ratchet screwdriver, enhance the ease-of-operation and mass production for higher economic benefits.

Abstract: A needle free connector includes a tube device having a first tube, a first locking elements formed on a distal end of the first tube and having a transverse channel in communication with the first tube and a push rod integrally formed on a side face of the first locking elements, a resilient frame securely engaged with the first locking elements and having a second ring movably positioned due to movement of the first tube and provided with a hole defined in a bottom face of the second ring to allow the first tube to movably extend therethrough, a hollow casing provided with a second tube to movably receive therein the first tube and a cap securely connected to the hollow casing to form a watertight connection.

Abstract: A needleless connector includes a hollow connector, a spring, and a switch assembly. The inner perimeter of the hollow connector forms a first annular wall and a second annular wall. The spring is disposed in the hollow connector. The switch assembly has a stop member and a guide tube connected to the stop member, the stop member being pressed between the annular block and the spring, the guide tube being disposed in the hollow connector, the external perimeter of the stop member forming a first annular portion against the first annular wall and a second annular portion against the second annular wall, a groove being disposed between the first annular portion and the second annular portion of the stop member, the groove being connected to the guide tube. Thus, the integral structure stability and good closing performance are achieved such that the outside air cannot leak into the connector structure.

Abstract: A needle-free connector includes a hollow connector, an elastic block, and a switch assembly. The inner perimeter of the hollow connector forms a first annular wall and a second annular wall. The elastic block is disposed in the hollow connector. The switch assembly has a stop member and a guide tube connected to the stop member, the stop member being pressed between the annular block and the elastic block, the guide tube being disposed in the hollow connector, the external perimeter of the stop member forming a first annular portion against the first annular wall and a second annular portion against the second annular wall, a groove being disposed between the first annular portion and the second annular portion of the stop member, the groove being connected to the guide tube. Thus, the structure stability and closing performance are achieved such that the outside air cannot leak into the connector.

Abstract: A foldable hand tool has a handle and a driving head. The handle has a driving head guide groove which extends along the handle and penetrates one side of the handle. A combined lug protrudes from an assembly end of the driving head and is fitted slidably with the driving head guide groove. The driving head is slidable along the driving head guide groove such that the driving head swings perpendicular to the handle. The hand tool can be positioned in a straight configuration or in a T-shaped pattern.

Abstract: A foldable hand tool has a handle and a tool's driving head. The tool is mainly characterized by that, the handle is provided with a driving head guide groove, which is extended along the handle and set correspondingly with the handle's long guide hole. The driving head guide groove penetrates one side of the handle. A combined lug is protruded from the assembly end of the tool's driving head, and fitted slidably with the driving head guide groove of the handle. When the tool's driving head swings perpendicular to the handle, it can slide along the driving head guide groove. With the arrangement of said driving head guide groove, the hand tool can be configured into a straight or T-shaped pattern, thus improving the ease-of-operation and flexibility to meet the customer demands with higher applicability.

Abstract: The present invention provides rotary positioning structure of the ratchet screwdriver. The rotary positioning structure includes two radial grooves, penetrating radially between the body of the ratchet screwdriver and the central axle hole. There are two -shaped snappers having a transverse rack and two vertical racks, and each is mounted separately into two radial grooves. The two vertical racks are inserted into two vertical slots. The transverse rack is placed opposite to the top flange of gear of the shaft lever. A flexible locker is used to press down the two -shaped snappers. A rotating drum is mounted and limited externally onto the body, while two troughs are arranged at intervals onto an inner wall of the retaining block opposite to the lower rivet holder, thereby forming a rotary positioning structure and offering a higher stability of positioning and ease-of-operation.

Abstract: The present invention provides rotary positioning structure of the ratchet screwdriver. The rotary positioning structure includes two radial grooves, penetrating radially between the body of the ratchet screwdriver and the central axle hole. There are two -shaped snappers having a transverse rack and two vertical racks, and each is mounted separately into two radial grooves. The two vertical racks are inserted into two vertical slots. The transverse rack is placed opposite to the top flange of gear of the shaft lever. A flexible locker is used to press down the two -shaped snappers. A rotating drum is mounted and limited externally onto the body, while two troughs are arranged at intervals onto an inner wall of the retaining block opposite to the lower rivet holder, thereby forming a rotary positioning structure and offering a higher stability of positioning and ease-of-operation.

Abstract: A ratchet screwdriver apparatus has a main body, a tubular member connected into the hole of the grip of the main body, a retractable element having an end extending through a through hole of the tubular member, and a positioning mechanism cooperatively connecting the tubular member with the retractable element so as to cause the retractable element to be in a fixed position with respect to the tubular member and in freely movable relationship with the tubular member. The positioning mechanism has a pair of half-mould structures, a ball extending through a tapering slot of the tubular member, a single elastic ring extending around the periphery of the first and second half-mould structures and a control ring extending entirely over the elastic ring.

Abstract: A ratchet screwdriver includes a handle, a main body, a shank, two check plates, a shifter, a position confining plate, and a tubular housing. The check plates are provided with an inclined edge, a reinforcing edge and a protruded edge. The inclined edge is intended to enable the check plates to be effectively actuated by the shifter. The reinforcing edge serves to enhance the structural strength of the check plates. The protruded edge serves to prevent the check plates from displacing. The main body is provided with two protruded ribs to securely position the tubular housing. The position confining plate is provided with two pillars, with one end of the pillars being received in the guided slot of the main body, and with the other end of the pillars being fitted into a recovery spring to enable the position confining plate to return to its original position.

Abstract: A ratchet screwdriver including a main body, two stop blocks, a switching block, a locating member, a recovery elastic piece. The main body is provided with an outer threaded portion having a hole for receiving a ratchet rod. A shell tube is fitted over the main body such that a switching ring is fitted over the shell tube. The switching ring is provided with a retaining groove for retaining a protruded block of the switching block. The shell tube and the switching ring are pressed against the main body by a pressing member having inner threads which are engaged with the outer threaded portion of the main body.

Abstract: A ratchet wrench including a main body, a shaft rod having a protruded pillar and a gear, an insertion plate, two check plates, a dial seat, and a housing. The shaft rod is provided with a skidproof head pivoted thereto. The skidproof head has a toothed hole through which the gear of the shaft rod is positioned. The shaft rod is provided in the midsegment with a rear stepped edge which is slidably disposed in an inner fitting hole of the front segment of the skidproof head. The shaft rod is further confined by a bracing element which is disposed between the rear stepped edge and the toothed hole.

Abstract: A ratchet screwdriver comprises a handle, a main body, and a movable joint member fastened between the handle and the main body. The joint member is formed of a ratchet portion, and a locating device comprising a position confining slot, a recovery spring, and a retaining member. The retaining member is formed of a press portion and a retaining portion and is urged by the recovery spring such that the retaining portion is retained by the ratchet portion so as to fix the movable joint member, and that the retaining portion is forced to move away from the ratchet portion at such time when the press portion of the retaining member is exerted on by an external force, thereby enabling the movable joint member to swivel.

Abstract: A ratchet screwdriver including a ratchet shifter having a dial seat which is concealed by a housing. The dial seat is provided with a bar body and a position confining hole for disposing a tension member. The dial seat is provided at the front end with an urging portion which is juts out of the main body. The main body is provided with a circular rotation member which is provided with a rotating slot corresponding in location to the urging portion of the dial seat. The circular rotation member is provided with a neck portion having an insertion protrusion for pivoting with the main body. The main body is provided in an insertion circular edge with a notch for locating the insertion protrusion.