Multi-functional double-ended socket and magnetic extension bar kit with C-shape retaining rings

1 . A multi-functional double-ended socket and magnetic extension bar kit with C-shape retaining rings, comprising a socket body, a magnetic extension bar with a detent ball, an H 8 -end C-shape retaining ring, and an H 10 -end C-shape retaining ring; wherein

the socket body is in a hollow cylindrical shape and is made from chrome vanadium steel or S2 alloy steel through a quenching and tempering heat treatment, two axial ends of the socket body are integrally formed with a socket end H 8 and a socket end H 10 , respectively, an internal specification of the socket end H 8 is H 8 , an internal specification of the socket end H 10 is H 10 , and the socket end H 8 and the socket end H 10 are configured to tighten metallic external hexagon screws, non-metallic external hexagon screws, or external hexagon nuts of different specifications;

a central internal hexagonal through hole H 8 is radially formed in a middle portion of the socket body, a specification of the central internal hexagonal through hole H 8 is H 8 , the central internal hexagonal through hole H 8 penetrates through two side walls of the socket body, and the central internal hexagonal through hole H 8 is configured to receive an H 8 -size internal hexagonal driving bar to drive the socket body to rotate; and the magnetic extension bar with the detent ball comprises an H 1 / 4 shank, a magnetic head, a detent ball groove, and a driving end detent ball, wherein a tail portion of the H 1 / 4 shank is configured to connect a power tool or a pneumatic tool, to drive the socket body to rotate through the electric tool or the pneumatic tool;

the magnetic head is made from an NdFeB strong magnet with dimensions of 5×4.5 mm, and the magnetic head is fixedly mounted at an end of the H 1 / 4 shank distal from the tail portion and configured to attract and fix a metallic external hexagon screw or a stainless steel external hexagon screw, to facilitate screw pickup/placement and initial positioning; and the detent ball groove is formed in a peripheral surface of a bar body between the H 1 / 4 shank and the magnetic head, and the driving end detent ball is movably embedded in the detent ball groove; and

two H 8 -end retaining ring grooves are formed in a face of an internal hexagonal edge of the socket end H 8 , two H 10 -end retaining ring grooves are formed in a face of an internal hexagonal edge of the socket end H 10 , a size of each H 8 -end retaining ring groove matches a size of the H 8 -end C-shape retaining ring, a size of each H 10 -end retaining ring groove matches a size of the H 10 -end C-shape retaining ring, the H 8 -end C-shape retaining ring is correspondingly snapped in the H 8 -end retaining ring groove, the H 10 -end C-shape retaining ring is correspondingly snapped in the H 10 -end retaining ring groove, and the H 8 -end C-shape retaining ring and the H 10 -end C-shape retaining ring are configured to clamp a metallic external hexagon screw, a non-metallic external hexagon screw, or a stainless steel external hexagon screw to prevent the screw from falling off;

wherein an H 8 -end yellow-painted groove for specification identification is formed in an outer wall of the socket end H 8 , an H 10 -end blue-painted groove for specification identification is formed in an outer wall of the socket end H 10 , the H 8 -end yellow-painted groove for specification identification is configured to intuitively identify the specification of the socket end H 8 , and the H 10 -end blue-painted groove for specification identification is configured to intuitively identify the specification of the socket end H 10 .

2 . The multi-functional double-ended socket and magnetic extension bar kit with C-shape retaining rings according to claim 1 , wherein the central internal hexagonal through hole H 8 is adapted to an H 8 -size internal hexagonal driving bar, and the H 8 -size internal hexagonal driving bar is inserted into the central internal hexagonal through hole H 8 from the socket end H 8 side of the socket body, or inserted into the central internal hexagonal through hole H 8 from the socket end H 10 side of the socket body, to achieve the socket body to be driven to rotate from either direction of both ends of the socket body.

3 . The multi-functional double-ended socket and magnetic extension bar kit with C-shape retaining rings according to claim 1 , wherein the driving end detent ball is configured to achieve an axial limitation when the magnetic extension bar with the detent ball cooperates with an external tool or the socket body, to prevent the magnetic extension bar with the detent ball from detaching from the cooperating component.

4 . The multi-functional double-ended socket and magnetic extension bar kit with C-shape retaining rings according to claim 1 , wherein one H 8 -end retaining ring groove round hole is correspondingly formed beside each H 8 -end retaining ring groove of the socket end H 8 , one H 10 -end retaining ring groove round hole is correspondingly formed beside each H 10 -end retaining ring groove of the socket end H 10 , the H 8 -end retaining ring groove round hole is communicated with the corresponding H 8 -end retaining ring groove, the H 10 -end retaining ring groove round hole is communicated with the corresponding H 10 -end retaining ring groove, diameters of the H 8 -end retaining ring groove round hole and the H 10 -end retaining ring groove round hole are larger than widths of the H 8 -end retaining ring groove and the H 10 -end retaining ring groove, respectively, and the H 8 -end retaining ring groove round hole and the H 10 -end retaining ring groove round hole are configured to assist in installation and removal operations of the H 8 -end C-shape retaining ring and the H 10 -end C-shape retaining ring.

5 . The multi-functional double-ended socket and magnetic extension bar kit with C-shape retaining rings according to claim 1 , wherein the magnetic head is embedded into an end portion of the H 1 / 4 shank distal from the tail portion by an interference fit, and an end surface of the magnetic head is flush with an end surface of the H 1 / 4 shank at the end where the magnetic head is located, to ensure a secure connection between the magnetic head and the H 1 / 4 shank, and simultaneously prevent the magnetic head from protruding and causing interference.

6 . The multi-functional double-ended socket and magnetic extension bar kit with C-shape retaining rings according to claim 1 , wherein the heat treatment process of the socket body involves quenching and tempering, and the socket body treated with quenching and tempering has a hardness of up to HRC 45-50, to enhance the deformation resistance, strength, and wear resistance of the socket body, and extend the service life of the tool.

7 . The multi-functional double-ended socket and magnetic extension bar kit with C-shape retaining rings according to claim 1 , wherein the number of the H 8 -end retaining rings is consistent with the number of the H 8 -end retaining ring grooves, the number of the H 10 -end retaining rings is consistent with the number of the H 10 -end retaining ring grooves, and opening directions of both the H 8 -end C-shape retaining ring and the H 10 -end C-shape retaining ring face a central axis of the socket body to ensure a clamping effect on a screw.