A tool connecting rod is provided, including: a main body, a sleeve member and a magnetic mechanism. The main body includes a driving portion and an assembling portion opposite to the driving portion, and the assembling portion has an assembling hole extending in an axial direction. The sleeve member is non-rotatably disposed on the assembling portion and includes at least one sleeving hole configured to be connected with a connecting member. The magnetic mechanism is disposed within the assembling hole and includes a magnetic member penetrating into the sleeve member and an elastic member abutted against and between the main body and the magnetic member. In a circumferential direction of the magnetic member, a first gap is defined between the sleeve member and the magnetic member so that the sleeve member and the magnetic member are movable radially relative to each other.

A tool connecting rod is provided, including: a main body, a sleeve member and a magnetic mechanism. The main body includes a driving portion and an assembling portion opposite to the driving portion, and the assembling portion has an assembling hole extending in an axial direction. The sleeve member is non-rotatably disposed on the assembling portion and includes at least one sleeving hole configured to be connected with a connecting member. The magnetic mechanism is disposed within the assembling hole and includes a magnetic member penetrating into the sleeve member and an elastic member abutted against and between the main body and the magnetic member. In a circumferential direction of the magnetic member, a first gap is defined between the sleeve member and the magnetic member so that the sleeve member and the magnetic member are movable radially relative to each other.

A fastening device for fastening a bolt to a fastening target object, wherein the bolt has a bolt head female screw section in an inner circumferential surface of a recess provided in an upper surface of a bolt head section. The fastening device includes a tension rod having a rod male screw section engaging the bolt head female screw section; a drive socket circumferentially surrounding the tension rod and having a lower end section with a grasper for laterally grasping the bolt head section; a supporter circumferentially surrounding the drive socket and having a lower end section protruding downward beyond a lower end section of the drive socket; a sensor for sensing compression force acting on the supporter in the upward/downward direction; a first motor for rotating the tension rod around an axis extending in the upward/downward direction; and a second motor for rotating the drive socket around the axis.

A sleeve assembly and an electric tool are provided. The sleeve assembly includes a sleeve defining a receiving cavity recessed backward from a first end face of the sleeve. The nut is received in the receiving cavity. The sleeve assembly also includes a pull rod assembly arranged in the receiving cavity. The pull rod assembly includes a pull rod extending along a central axis of the sleeve, a pulling component arranged at one end of the pull rod, and a bearing arranged at another end of the pull rod opposite to the pulling component. The pull rod is connected to an inner wall of the sleeve through the bearing, and the pull rod is rotatable relative to the sleeve. In response to the sleeve assembly screwing the nut, the pulling component is configured to drive the bolt to be attached to a surface of the to-be-fixed component.

A sleeve assembly and an electric tool are provided. The sleeve assembly includes a sleeve defining a receiving cavity recessed backward from a first end face of the sleeve. The nut is received in the receiving cavity. The sleeve assembly also includes a pull rod assembly arranged in the receiving cavity. The pull rod assembly includes a pull rod extending along a central axis of the sleeve, a pulling component arranged at one end of the pull rod, and a bearing arranged at another end of the pull rod opposite to the pulling component. The pull rod is connected to an inner wall of the sleeve through the bearing, and the pull rod is rotatable relative to the sleeve. In response to the sleeve assembly screwing the nut, the pulling component is configured to drive the bolt to be attached to a surface of the to-be-fixed component.

A screwdriver includes a first section, a second section where a positioning groove is annularly formed, a sleeve member detachably disposed on the second section, and an engagement member disposed in the sleeve member. The sleeve member has a body with a through hole, a magnetic unit disposed in the through hole, and an accommodation groove adapted to accommodate the engagement member. When the second section and the sleeve member engage in position, the accommodation groove and the positioning groove meet to engage the engagement member with the positioning groove. The engagement between the second section and the sleeve member allows a gap to be formed between a screw head and the sleeve member while inserting the second section into a socket of the screw head, so the magnetic attraction exists without the contact between the sleeve member and the screw head for a firm engagement therebetween.

A screwdriver includes a first section, a second section where a positioning groove is annularly formed, a sleeve member detachably disposed on the second section, and an engagement member disposed in the sleeve member. The sleeve member has a body with a through hole, a magnetic unit disposed in the through hole, and an accommodation groove adapted to accommodate the engagement member. When the second section and the sleeve member engage in position, the accommodation groove and the positioning groove meet to engage the engagement member with the positioning groove. The engagement between the second section and the sleeve member allows a gap to be formed between a screw head and the sleeve member while inserting the second section into a socket of the screw head, so the magnetic attraction exists without the contact between the sleeve member and the screw head for a firm engagement therebetween.

A drive guide connectable to a power tool includes a shank, a barrel, and a sleeve. The shank includes a tool coupling portion and a barrel coupling portion. The barrel is coupled to the barrel coupling portion of the shank. The barrel includes a bit coupling portion configured to couple to a tool bit. The barrel also includes a first depth indicium disposed on a surface of the barrel and a second depth indicium disposed on the surface of the barrel. The second depth indicium is circumferentially spaced about the barrel from the first depth indicium. The sleeve is disposed concentrically about and slidable along the barrel. An edge of the sleeve provides a visual indicator to determine depth based on the first and second depth indicia.

A drive guide connectable to a power tool includes a shank, a barrel, and a sleeve. The shank includes a tool coupling portion and a barrel coupling portion. The barrel is coupled to the barrel coupling portion of the shank. The barrel includes a bit coupling portion configured to couple to a tool bit. The barrel also includes a first depth indicium disposed on a surface of the barrel and a second depth indicium disposed on the surface of the barrel. The second depth indicium is circumferentially spaced about the barrel from the first depth indicium. The sleeve is disposed concentrically about and slidable along the barrel. An edge of the sleeve provides a visual indicator to determine depth based on the first and second depth indicia.

A motor driven appliance in one aspect of embodiments of the present disclosure comprises a light source, a lighting unit, a motor, an operation unit, an operation detector, a reference signal output unit, a determination unit, and a control unit. The operation detector detects that the operation unit is operated, and outputs an operation detection signal that indicates that the operation unit is operated. The reference signal output unit outputs at least one reference signal that can be used as a reference for determining whether the detection by the operation detector is normal. The determination unit determines whether the operation unit is actually operated based on the operation detection signal and the at least one reference signal. The control unit controls operation of the lighting unit based on the determination made by the determination unit.