Abstract: A driving head-changeable tool is provided, including: a main body, including a chamber and an assembling end, the chamber including concave portions and convex portions alternatively arranged circumferentially, the chamber further including at least one receiving hole each receiving a blocking member; an outer sleeve, disposed around the main body, including a recess and a projection protrusive, the outer sleeve being slidable relative to the main body; wherein when the outer sleeve is located in a first position, the projection urges the blocking member to project within the chamber to retain the polygonal ball joint in the chamber; when the outer sleeve is located in a second position, the blocking member is retractable in the recess to be not protrusive within the chamber so that the polygonal ball joint is disengageable from the chamber.

Abstract: A two-size socket tool is provided, wherein the two-size socket tool includes: an outer sleeve including a socket hole, a receiving hole in communication with the socket hole, and a radial protrusion radially protruding between the socket hole and the receiving hole; an inner sleeve non-rotatably inserted in the outer sleeve and including an inner sleeving portion and a connection section connected to each other by insertion, the inner sleeving portion being received in the socket hole and blockable by the radial protrusion, the connection section extending from the inner sleeving portion toward the receiving hole; and a first elastic member received in the receiving hole and between the radial protrusion and the inner sleeve.

Abstract: A driving head-changeable tool is provided, including: a main body, including a chamber and an assembling end, the chamber including concave portions and convex portions alternatively arranged circumferentially, the chamber further including at least one receiving hole each receiving a blocking member; an outer sleeve, disposed around the main body, including a recess and a projection protrusive, the outer sleeve being slidable relative to the main body; wherein when the outer sleeve is located in a first position, the projection urges the blocking member to project within the chamber to retain the polygonal ball joint in the chamber; when the outer sleeve is located in a second position, the blocking member is retractable in the recess to be not protrusive within the chamber so that the polygonal ball joint is disengageable from the chamber.

Abstract: A tool joint is provided, including a main body, a swingable member and a locking structure. The main body has a connecting channel. The swingable member is disposed on the main body. A driving rod is disposed through the swingable member and movable between a first position and a second position. When the driving rod is in the first position, the driving rod is out of the connecting channel, the swingable member is swingable relative to the main body. When the driving rod is in the second position, the driving rod projects within the connecting channel and the swingable member is non-swingable relative to the main body.

Abstract: A multi-section universal tool includes an assembling member, a connecting member, a working member and two elastic members. The assembling member has an assembling portion and a first receiving room. The connecting member includes a connecting ball joint and a second receiving room. The connecting ball joint includes a connecting elastic abutting member which has a tendency to radially move outwardly. The connecting ball joint is inserted into the first receiving room and movable relative to the first receiving room to be in a first connecting position or a second connecting position. The working member includes a working ball joint including a working elastic abutting member which has a tendency to radially move outwardly. The working ball joint is inserted into the second receiving room and movable relative to the second receiving room to be in a first working position or a second working position.

Abstract: A tool joint is provided, including a main body, a swingable member and a locking structure. The main body has a connecting channel. The swingable member is disposed on the main body. A driving rod is disposed through the swingable member and movable between a first position and a second position. When the driving rod is in the first position, the driving rod is out of the connecting channel, the swingable member is swingable relative to the main body. When the driving rod is in the second position, the driving rod projects within the connecting channel and the swingable member is non-swingable relative to the main body.

Abstract: A two-stage universal joint includes a sleeve, a driving member and a restricting member. The sleeve defines an axial direction and includes a receiving groove and an assembling portion. The driving member includes a polygonal ball head. The polygonal ball head has a plurality of arcuate portions. The polygonal ball head is inserted into the receiving groove. The driving member is slidable between a first position and a second position relative to the sleeve.

Abstract: A two-stage universal joint includes a sleeve member, a driving member, and an elastic member. The sleeve member defines an axial direction and has a sleeve portion and a connection portion. The sleeve portion has a receiving groove having plural positioning protrusions extending axially on an inner wall thereof. One of the positioning protrusions has a recessed portion. The driving portion has a polygonal ball-joint having plural arc-face sections. The polygonal ball-joint is inserted into the receiving groove. The driving member is slidable with respect to the sleeve member between a first position and a second position. The polygonal ball-joint has a biasing member tending to move outward.

Abstract: A multi-section universal tool includes an assembling member, a connecting member, a working member and two elastic members. The assembling member has an assembling portion and a first receiving room. The connecting member includes a connecting ball joint and a second receiving room. The connecting ball joint includes a connecting elastic abutting member which has a tendency to radially move outwardly. The connecting ball joint is inserted into the first receiving room and movable relative to the first receiving room to be in a first connecting position or a second connecting position. The working member includes a working ball joint including a working elastic abutting member which has a tendency to radially move outwardly. The working ball joint is inserted into the second receiving room and movable relative to the second receiving room to be in a first working position or a second working position.

Abstract: A two-stage universal joint includes a sleeve member, a driving member, and an elastic member. The sleeve member defines an axial direction and has a sleeve portion and a connection portion. The sleeve portion has a receiving groove having plural positioning protrusions extending axially on an inner wall thereof. One of the positioning protrusions has a recessed portion. The driving portion has a polygonal ball-joint having plural arc-face sections. The polygonal ball-joint is inserted into the receiving groove. The driving member is slidable with respect to the sleeve member between a first position and a second position. The polygonal ball-joint has a biasing member tending to move outward.

Abstract: A two-stage universal joint includes a sleeve, a driving member and a restricting member. The sleeve defines an axial direction and includes a receiving groove and an assembling portion. The driving member includes a polygonal ball head. The polygonal ball head has a plurality of arcuate portions. The polygonal ball head is inserted into the receiving groove. The driving member is slidable between a first position and a second position relative to the sleeve.

Abstract: A multi-section universal tool includes an assembling member, a connecting member, a working member and two elastic members. The assembling member has an assembling portion and a first receiving room. The connecting member includes a connecting ball-joint and a second receiving room. The connecting ball-joint includes a connecting elastic abutting member which has a tendency to radially move outwardly. The connecting ball-joint is inserted into the first receiving room and movable relative to the first receiving room to be in a first connecting position or a second connecting position. The working member includes a working ball joint including a working elastic abutting member which has a tendency to radially move outwardly. The working ball-joint is inserted into the second receiving room and movable relative to the second receiving room to be in a first working position or a second working position.

Abstract: A two-stage universal joint includes a sleeve, a driving member and an elastic member. The sleeve defines an axial direction, including a receiving room and an assembling portion. An inner wall of the receiving room has a recessed portion. The driving member includes a polygonal ball head. The polygonal ball head has a plurality of arc parts. The driving member is slidable between a first position and a second position relative to the sleeve. The polygonal ball head includes a resilient mechanism. The resilient mechanism has a tendency to normally spring radially outward.

Abstract: A tool storage device is provided, including: a flexible substrate, having a mounting surface; at least one tool storage member, each of the at least one tool storage member including a base which is attached to the mounting surface and at least one tool seat slidably disposed on the base; wherein the flexible substrate is foldable to form a storage space for storing the at least one tool storage member therein.

Abstract: A driving tool is provided, including a tool set and a driving head. The tool set includes a connecting sleeve, an outer sleeve and at least one limitation member. The connecting sleeve has a receiving slot and a driving end. A plurality of protruding ribs extending axially and a plurality of recesses disposed between the protruding ribs are disposed on an inner wall of the receiving slot. The recesses are provided for a polygonal ball head to insert therein. A recessed portion and a protruding portion are disposed on the inner wall. The outer sleeve is slidable between a first position and a second position. When the outer sleeve is at the first position, the limitation member can restrict the polygonal ball head. When the outer sleeve is at the second position, the polygonal ball head is withdrawable from the receiving slot.

Abstract: A driving head-changeable tool is provided, including a tool set and a driving head. The tool set includes a connecting sleeve, an outer sleeve and at least one limitation member. The connecting sleeve has a receiving slot and a driving end. A plurality of protruding ribs extending axially and a plurality of recesses disposed between the protruding ribs are disposed on an inner wall of the receiving slot. The recesses are provided for a polygonal ball head to insert therein. A recessed portion and a protruding portion are disposed on the inner wall. The outer sleeve is slidable between a first position and a second position. When the outer sleeve is at the first position, the limitation member can restrict the polygonal ball head. When the outer sleeve is at the second position, the polygonal ball head is withdrawable from the receiving slot.

Abstract: A driving head-changeable tool is provided, comprising an outer sleeve and an inner sleeve. The outer sleeve has an end peripheral edge and a non-circular circumferential inner wall. The end peripheral edge is formed with corner portions and blocking flanges. The inner sleeve has a non-circular circumferential outer wall. The inner sleeve is rotatably sleeved by the outer sleeve and has a first connecting end along a central axis. An inner wall of the first connecting end is formed with concaves extending axially. The non-circular circumferential inner and outer walls are nonrotatably abutted against each other. As viewed in an axial direction, each concave overlaps with one the blocking flange. When a driving head is inserted in the inner sleeve and the outer sleeve and the inner sleeve come close to each other, the driving head is blocked by the blocking flanges.