Abstract: A telescopic socket includes an outer sleeve, an inner sleeve, and a jointing ring. The outer sleeve includes at least one abutting ball, plural first concave portions, and plural first protruding portions. The inner sleeve is sleeved by and slidably connected to the outer sleeve and includes at least two engaging holes, plural second concave portions, and plural second protruding portions. The second protruding portions are slidably connected to the first concave portions respectively, and the first protruding portions are slidably connected to the second concave portions respectively. The jointing ring is movably connected to the outer sleeve and includes an abutting part and an accommodating part, and the abutting part optionally abuts against the abutting ball. By controlling the jointing ring, the inner sleeve can be slid or positioned relative to the outer sleeve, and the length of the telescopic socket can be changed.

Abstract: A display protecting device is disposed on an electric wrench which has an opening. The display protecting device includes a printed circuit board, a display, a cover and a protection member. The printed circuit board is disposed in the opening. The display is disposed on the printed circuit board. The cover is located above the printed circuit board and covers on the opening. The protection member is assembled with the cover. The protection member includes a body and two wing portions. The body covers on the display. The two wing portions are connected to two sides of the body and cover on two sides of the display.

Abstract: An inertial rotation device includes: a central member with an axial direction, a first engaging portion on the peripheral surface of the central member, an inertia member with a mounting hole, and a second engaging portion on the wall of the mounting hole. The inertia member is mounted around the central member and can be displaced between an engaging position and a released position along the axial direction of the central member. The inertia member can rotate together with the central member when at the engaging position, where the two engaging portions are engaged with each other, and cannot rotate together with the central member when at the released position, where the two engaging portions are disengaged from each other. The magnitude of the torque of the inertial rotation device can be changed by switching the inertia member to the engaging position or the released position.

Abstract: A pushing lever structure of a ratchet wrench is provided. The ratchet wrench has a head portion. A ratchet gear, a toothed element, and a pushing lever are mounted in a receiving space of the head portion. A rear peripheral surface portion of the toothed element is provided with a recess. A pushing block extending forward from the pushing lever extends into the recess of the toothed element. When rotated, the pushing lever can move the toothed element effectively because it is the pushing block of the pushing lever that drives the toothed element into displacement. The bottom side of the head portion is mounted with a cover plate, and the bottom end of the pushing lever is pivotally provided on the cover plate to enhance the rotation stability of the pushing lever.

Abstract: A magnetically assisted direction-changeable roller wrench has a main body, a driving member, a direction changing knob, plural rollers, a magnetic balancing member, and a magnetic positioning unit. The driving member, the rollers, and the direction changing knob are mounted in a head portion of the main body. The magnetic positioning unit includes a first and a second magnetic member located respectively on the driving member and the direction changing knob. The corresponding surfaces of the first and the second magnetic members have the same magnetic polarity, so a predetermined distance can be maintained between the first and the second magnetic members to secure the direction changing knob in position. The direction changing knob can displace each roller into contact with an engaging surface of the corresponding side of the driving member. The magnetic balancing member and the magnetic positioning unit lie in opposite directions to enable balanced magnetic attraction.

Abstract: A vibrating wrench includes a housing, a driving head, a handle and a vibrating structure. The housing includes a hollow space. The driving head is disposed at one end of the housing. The handle is disposed at the other end of the housing and includes an inner wall and a containing space. The containing space is communicated with the hollow space. The vibrating structure is disposed in the containing space of the handle and includes a vibrating motor and a medium element. The medium element is fully connected or partially connected to an outer surface of the vibrating motor. The inner wall of the handle is fully connected or partially connected to the medium element.

Abstract: A torque tool for identifying locking state of torque adjustment mechanism includes: a tubular body; a tool head having a stem body fitted in the tubular body, a torque adjustment mechanism being used to adjust the torque of the torque tool, a handle with at least one display window being fitted around the tubular body; a locking mechanism for selectively locking the torque adjustment mechanism; a push unit positioned behind the locking mechanism; and a first identification area and a second identification area respectively formed on the locking mechanism and the push unit. When the locking mechanism is not pushed by the push unit, the first identification area is displayed through the display window. When the push unit pushes the locking mechanism to lock the torque adjustment mechanism, it is impossible to adjust the torque of the torque tool and the second identification area is displayed through the display window.

Abstract: A folding torque wrench includes a bar body, a connection rod the front end of which is pivotally connected with the bar body, a tubular body fitted on the connection rod and a torque adjustment mechanism having at least one elastic member and an adjustment member. A threaded section of rear end of the connection rod is screwed in a threaded hole of the adjustment member. The threaded section of the connection rod and the threaded hole of the adjustment member are formed as a first threaded section and a second threaded section. The first threaded section is at least double-start threads. When rotating the adjustment member by one circle, the adjustment member is moved in the longitudinal direction of the connection rod by a travel, which is over two time the pitch of the first threaded section. The torque value of the wrench can be quickly greatly adjusted only by means of rotating the adjustment member by few circles.

Abstract: A torque wrench with torque adjustment mechanism includes a tubular body and a torque adjustment mechanism disposed in the tubular body. The torque adjustment mechanism includes an abutting member, an adjustment member and an adjustment button. The abutting member has a first slope disposed at rear end of the abutting member in contact with a second slope disposed at a front end of the adjustment member. When adjusting the set torque value of the torque wrench, the adjustment button is rotated to drive the adjustment member to displace in a transverse direction of the tubular body. By means of the cooperation between the first and second slopes, the abutting member is displaced in a longitudinal direction of the tubular body to compress or release an elastic member positioned in front of the abutting member.

Abstract: A jointing structure includes a jointing member and at least two abutting members. The at least two abutting members are disposed on the jointing member. The jointing member includes a surface and a plurality of side surfaces surrounding the surface, and the at least two abutting members are disposed on at least two of the side surfaces respectively.

Abstract: An electronic torque wrench with sensing structure includes a tubular body, a working head and at least one sensing element. The working head includes a head section and a connection section secured in the front end of the tubular body. The head section is positioned at the front end of the tubular body. The sensing element is disposed on an outer circumference of the tubular body. Accordingly, the length of the connection section of the working head is greatly shortened and the internal structure of the tubular body is simplified to lower the material cost and manufacturing cost. In addition, the weight of the torque wrench is reduced and the sensing precision of the sensing element is enhanced, whereby a user can more easily hold the torque wrench and more smoothly use the torque wrench to enhance the whole benefit of the torque wrench.

Abstract: A wrench with quickly angularly adjustable handle includes a head section and a handle. The head section and the handle are pivotally connected with each other via a first and a second pivoted ends, whereby the handle can be up and down swung relative to the head section. The first and second pivoted ends respectively have a first and a second end faces facing each other. The first end face is formed with an upper and a lower contact sections. The second end face is formed with an upper and a lower abutment sections. The lower abutment section abuts against the lower contact section as a lower dead end of angular displacement of the handle. The upper abutment section abuts against the upper contact section as an upper dead end of angular displacement of the handle.

Abstract: A one-way inertial rotational device includes: a rotary seat; an inertial member pivotally rotatably disposed on the circumference of the rotary seat via a pivot hole, a circumference of the rotary seat and a hole wall of the pivot hole of the inertial member being defined as a first circumferential face and a second circumferential face; and a one-way transmission mechanism having at least one one-way transmission tooth, at least one elastic member and multiple engagement teeth. The engagement teeth are annularly disposed on the second circumferential face. The transmission tooth is displaceably disposed on the first circumferential face. The elastic member keeps the transmission tooth engaged with the engagement teeth. Each engagement tooth has a tooth crest and a tooth height. The width of the tooth crest is larger than the tooth height so that the loss of the rotational energy is reduced to achieve greater rotational torque.

Abstract: An inertial rotational tightening device includes: a rotationally drivable main body, an annular engagement section being disposed on a circumference of the main body; an inertial member having an engagement hole axially formed through the inertial member, the engagement hole of the inertial member being detachably engaged with the engagement section of the main body, a retaining groove being formed on a circumference of the engagement section or a hole wall of the engagement hole, an insertion groove being formed on the hole wall of the engagement hole or the circumference of the engagement section; and an elastic retainer member inlaid and buckled in the retaining groove and the insertion groove. The inertial member is detachably connected with the main body. Different inertial members with different mass can be selectively mounted on the main body to change the moment of inertia and the rotational torque of the rotational tightening device.

Abstract: A lock threaded assembly includes a bolt including a shank formed with a bolt head and having a threaded portion; at least one groove formed on the threaded portion; a nut including a threaded hole configured to secure to the threaded portion of the bolt; at least one trough formed on the threaded hole; and at least one engagement member being an elongated elastic strip body having a securing section and a received section, the securing section and the received section being able to elastically get closer to each other or move away from each other. When the groove is not aligned with the trough, the bolt and the nut are not locked by the engagement member; when the groove is aligned with the trough, the bolt and the nut are elastically locked by the engagement member.