Abstract: A socket is provided, wherein the socket includes: a main body defining a circumferential direction, a radial direction and an axial direction, and including an outer wall and grooves, the grooves being disposed on the outer wall and extending in the radial direction, abutting portions each being formed between two neighboring ones of the grooves in the circumferential direction; and a buffer ring sleeved to the outer wall in the axial direction and deformed to be a geometric polygon, the geometric polygon including engaging portions engaged in the grooves and corner portions abutted on the abutting portions. Another socket is provided, wherein the socket includes: a main body including an outer wall; and a geometric polygon, the geometric polygon and the main body being integrally formed of one piece, the geometric polygon projecting from the outer wall.

Abstract: A tool connector is provided, wherein the tool connector includes: a main body including first and second tubular portions at opposing ends, a first elastic member being disposed on the first tubular portion and protrusive beyond an inner surface of the first tubular portion, a second elastic member being disposed on the second tubular portion and protrusive beyond an inner surface of the second tubular portion; a connection rod including an insertion portion including a small diameter section and a large diameter section, and a connection portion; wherein when the insertion portion is inserted in the first tubular portion, the first elastic member is radially abutted against the large diameter section, and when the insertion portion is inserted in the second tubular portion, the second elastic member is radially abutted against the small diameter section.

Abstract: A tool connecting rod is provided, including: a rod, a first sleeve member, a second sleeve member, an elastic member, a first magnetic member and a restriction mechanism. The rod has an insertion groove. The first sleeve member is tubular and slidably sleeved to the rod, and the first sleeve member includes an assembling end portion. The second sleeve member is slidably sleeved to the first sleeve member. The elastic member is disposed on one of the first sleeve member and the second sleeve member and radially abutted against the other one of the first sleeve member and the second sleeve member. The elastic member is located between an outer circumferential surface of the first sleeve member and an inner circumferential surface of the second sleeve member. The first magnetic member is disposed on the assembling end portion.

Abstract: A fastener is provided, including: a driven end including an engaging hole which includes three slots recessed radially and angularly arranged in intervals, each of the three slots being formed as a part of a rectangle and including two right angles, every adjacent two of the three slots defining a rib therebetween.

Abstract: A driving tool is providing, including: a driving end including three ribs which are angularly arranged in intervals, each of the three ribs being formed as a part of a rectangle and including two right angles, every adjacent two of the three ribs defining a groove therebetween.

Abstract: A driving tool is providing, including: a driving end including three ribs which are angularly arranged in intervals, each of the three ribs being formed as a part of a rectangle and including two right angles, every adjacent two of the three ribs defining a groove therebetween.

Abstract: A fastener is provided, including: a driven end including an engaging hole which includes three slots recessed radially and angularly arranged in intervals, each of the three slots being formed as a part of a rectangle and including two right angles, every adjacent two of the three slots defining a rib therebetween.

Abstract: A small outer diameter quick release extension rod is provided with elongated sheet-shaped elastic elements therein for realizing the effect of engaging with a screwdriver head. A second positioning ring in the operating element is used to press against the elastic elements to control them to be engaged in or disengaged from the screwdriver head. The small outer diameter quick release extension rod is easy to operate and has a relatively small outer diameter, not only reducing the structure weight and energy loss, but also enhancing the flexibility of use.

Abstract: A two-torque-producing connecting rod assembly used in combination with a hand tool is provided with a rod and a connecting member. The rod is polygonal and includes a big first section, a small second section and a connecting portion. The connecting member is a hollow cylindrical structure sleeved on the rod and has an inserting cavity and a stepped receiving cavity. The receiving cavity includes an outer section, an inner section and a middle section which is smaller in diameter than the outer section but larger than the inner section, the outer section includes plural alternatively-arranged arc-shaped concave portions and pointed convex portions. When the first section of the rod is inserted in the outer section of the connecting member, plural angles of the first section are disposed between the arc-shaped concave portions and restricted to move between the two ends by the pointed convex portions.

Abstract: A two-torque-producing connecting rod assembly used in combination with a hand tool is provided with a rod and a connecting member. The rod is polygonal and includes a big first section, a small second section and a connecting portion. The connecting member is a hollow cylindrical structure sleeved on the rod and has an inserting cavity and a stepped receiving cavity. The receiving cavity includes an outer section, an inner section and a middle section which is smaller in diameter than the outer section but larger than the inner section, the outer section includes plural alternatively-arranged arc-shaped concave portions and pointed convex portions. When the first section of the rod is inserted in the outer section of the connecting member, plural angles of the first section are disposed between the arc-shaped concave portions and restricted to move between the two ends by the pointed convex portions.

Abstract: A quick release extension rod with a positioning structure comprises a body, a return member, an inserting rod, an even number of balls, a positioning ring, a control ring assembly, four elastic members and a C-shaped retainer. The balls are disposed on the connecting head of the inserting rod, so that the radial interval between the socket and the connecting head of the base of the quick release extension rod can be evenly distributed. When the socket rotates, the arrangement of an even number of balls can reduce the possibility of the asymmetrical-center-of-gravity caused oscillation. The four elastic members are disposed between the control ring assembly and the body to push the socket can be abutted against the control ring assembly to delimitate the axial interval, which further stabilize the center of gravity of rotation of the socket while preventing the occurrence of oscillation of the socket.

Abstract: A quick release extension rod with a positioning structure comprises a body, a return member, an inserting rod, an even number of balls, a positioning ring, a control ring assembly, four elastic members and a C-shaped retainer. The balls are disposed on the connecting head of the inserting rod, so that the radial interval between the socket and the connecting head of the base of the quick release extension rod can be evenly distributed. When the socket rotates, the arrangement of an even number of balls can reduce the possibility of the asymmetrical-center-of-gravity caused oscillation. The four elastic members are disposed between the control ring assembly and the body to push the socket can be abutted against the control ring assembly to delimitate the axial interval, which further stabilize the center of gravity of rotation of the socket while preventing the occurrence of oscillation of the socket.

Abstract: A small outer diameter quick release extension rod is provided with elongated sheet-shaped elastic elements therein for realizing the effect of engaging with a screwdriver head. A second positioning ring in the operating element is used to press against the elastic elements to control them to be engaged in or disengaged from the screwdriver head. The small outer diameter quick release extension rod is easy to operate and has a relatively small outer diameter, not only reducing the structure weight and energy loss, but also enhancing the flexibility of use.

Abstract: The present invention relates to a socket, at an end of the socket is formed an engaging hole for engaging with a screw head to be operated, and at another end of the socket formed a coupling hole for engaging with a locking portion of a socket wrench, wherein the socket is driven by the socket wrench to rotate the screw head to be operated; and the engaging hole is tapered inward and is defined a plurality of grooves for accommodation of angles of the screw head to be operated, a plurality of stop ribs having a hook-shaped cross section are formed in the engaging hole for abutting against a center portion of each side of the screw head to operated.

Abstract: The present invention relates to a socket, at an end of the socket is formed an engaging hole for engaging with a screw head to be operated, and at another end of the socket formed a coupling hole for engaging with a locking portion of a socket wrench, wherein the socket is driven by the socket wrench to rotate the screw head to be operated; and the engaging hole is tapered inward and is defined a plurality of grooves for accommodation of angles of the screw head to be operated, a plurality of stop ribs having a hook-shaped cross section are formed in the engaging hole for abutting against a center portion of each side of the screw head to operated.

Abstract: An adapter of screwdriver for coupling with screwdriver bits and the likes and generally comprising a sleeve, a slide ring, a spring and a retainer ring. The slide ring is a column member interiorly defined with a multi-stage hole, at the front of which is provided with a cone inner ring having increased cone ratio, a secondary inner ring and a big inner ring in turn, the sleeve has a hexagonal socket hole formed at the front end thereof and at the same an annular groove is defined for engaging with a C-shape ring, the retainer ring, the C-shape ring, the spring and a ring are mounted to a assembling diameter of the sleeve, which is characterized in: at the outer periphery of the assembling diameter of the sleeve thereof a hole is defined for the passage of the downward flange, through which, the downward flange is able to engage in the retainer groove of the screwdriver bit.

Abstract: An adapter of screwdriver for coupling with screwdriver bits and the likes and generally comprising a sleeve, a slide ring, a spring and a retainer ring. The slide ring is a column member interiorly defined with a multi-stage hole, at the front of which is provided with a cone inner ring having increased cone ratio, a secondary inner ring and a big inner ring in turn, the sleeve has a hexagonal socket hole formed at the front end thereof and at the same an annular groove is defined for engaging with a C-shape ring, the retainer ring, the C-shape ring, the spring and a ring are mounted to a assembling diameter of the sleeve, which is characterized in: at the outer periphery of the assembling diameter of the sleeve thereof a hole is defined for the passage of the downward flange, through which, the downward flange is able to engage in the retainer groove of the screwdriver bit.

Abstract: A chuck device includes a body having a slot in a first end thereof and a hole is defined radially in the body and communicates with the slot. A spring is mounted to the body and is biased between a stepped shoulder on the body and a movable clamp connected to the body. A connection rod is connected to a second end of the body. A positioning pin is movably inserted in the hole and an end of the positioning pin extends from the hole and has a tapered periphery. A sleeve is slidably mounted to the body and has a first tapered inner periphery for being matched with the tapered periphery of the positioning pin. A second tapered inner periphery is defined in a second end of the sleeve so as to push the movable clamp when sliding the sleeve by compressing the spring.