Abstract: A power-assisted folding knife is provided, including a blade holder, a blade arranged in the blade holder, a handle rotatably connected to the blade holder, a locking mechanism for locking the blade holder in an unfolded position and/or a folded position and a power-assisting mechanism connected to the blade holder and the handle. The power-assisted folding knife uses an assisting mechanism for providing assisting power when unfolding a folding knife, so as to facilitate easier unfolding of the folding knife and to allow single hand operation. Through the locking mechanism, the blade holder can be locked in an unfolded position and/or a folded position to ensure safe use of the power-assisted folding knife.

Abstract: The present invention discloses a method of manufacturing a tool with a cutting edge comprising a substrate for supporting and a cladding layer for forming the cutting edge, and a transition zone connecting the substrate and the cladding layer; the method of manufacturing it includes: providing a first material used for forming the substrate and having a first side; providing a second material which is clad onto the first side by way of laser cladding to form the cladding layer, and forming a transition zone between the cladding layer and the substrate where the first material and the second material are metallurgically bonded. The tool obtained by adopting the manufacturing process according to the present invention combines the following advantages: good toughness of the cutter body, high hardness of the cutting edge, not easy breaking off of the cutter body and the cutting edge, and long service life.

Abstract: The present invention provides an opening-closing device including a first component, a second component and a third component. The second component is rotatably connected with the first component, and the third component is rotatably connected with the second component. The present invention further includes a mode switching device for switching operating modes of the opening-closing device. The operating modes include a conventional mode and a labor-saving mode. When the opening-closing device is in the conventional mode, the third component is fixed relative to the second component. When the opening-closing device is in the labor-saving mode, the third component is rotated in the opening direction relative to the second component during opening of the opening-closing device, and the third component is rotated in the closing direction relative to the second component during closing of the opening-closing device.

Abstract: A hand tool with reliable connections comprises: a working unit having a working end and a handle end opposite to the working end; a handle being mounted on the handle end of the working unit and having a working unit end and a knocking unit end; a knocking unit being mounted on the knocking unit end of the handle. The connecting part between the knocking unit and the handle end of the working unit is a contacting surface, the handle end or the contacting surface is configured as a deformable and non-rigid contact, realizing the reliable connection between the working unit and the knocking unit.

Abstract: The present invention relates to an open-close handheld apparatus and a method of adjustment of the angle between the handheld portions thereof. The open-close handheld apparatus includes a first member and a second member. The first member includes a first clamping portion and a first handheld portion. The second member includes a second clamping portion and a second handheld portion. The first clamping portion and the second clamping portion are rotatably and movably connected via a first axle pin. The first clamping portion and the second clamping portion open and close relative to each other, the plane in which the open-close path thereof is located is an open-close plane. The first handheld portion is rotatably connected to the first clamping portion. The plane in which the rotation path of the first handheld portion is located is the same as or parallel to the open-close plane.

Abstract: The present invention provides a box-type wire stripper, comprising a retractable box body having a variable height and including at least one box body side wall; and at least one wire stripping device for partially or entirely stripping a wire sheath covering a wire core, and each wire stripping device is arranged on one box body side wall.

Abstract: The present invention discloses a method for manufacturing a screwdriver head, the screwdriver head including a head portion for being inserted into a slot of a screw head and a basal body for supporting the head portion; the manufacturing method including: providing the screwdriver head made of a first metal material; preparing alloying coating; coating the alloying coating on the surface of the head portion of the screwdriver head; conducting laser surface alloying treatment on the surface of the head portion coated with the alloying coating to form an alloyed layer; and conducting low temperature tempering treatment on the screwdriver head after the laser surface alloying treatment. The present invention further discloses a screwdriver head, the surface of the position at which the head portion of the screwdriver head contacts with the slot of the screw head is provided with an alloyed layer formed through the laser surface alloying treatment.

Abstract: The present invention discloses a cutting tool with a cutting edge, including a base and a cutting edge, where the cutting edge includes a laser cyclic heat treatment hardened layer, and the hardness of the hardened layer is higher than the hardness of the base. The present invention also discloses a method for manufacturing the foregoing tool.

Abstract: The present invention discloses a pair of adjustable pliers, comprising a first handle and a second handle, both of which have a gripping part arranged at a front end thereof, the two gripping parts forming a jaw span, the first handle and the second handle being arranged in an intersectional manner and relatively fixed via a connecting mechanism, wherein the second handle has an elongated rack slot at a position of the connecting mechanism, and the rack slot is provided with a toothed rack on an inner side part thereof. The connecting mechanism comprises a positioning snap piece arranged inside the rack slot and a link mechanism connected with the positioning snap piece, the positioning snap piece has lateral teeth which are engaged with the toothed rack on the rack slot, the link mechanism is provided to drive the positioning snap piece to rotate and disengage the lateral teeth on the positioning snap piece from the toothed rack.

Abstract: A clamp, including a first clamp body and a second clamp body. The first clamp body includes a first clamp jaw and a first handle, movably connected to each other. The first clamp jaw is rotatably connected to the second clamp body at a first connecting position, and the first handle is rotatably connected to the second clamp body at a second connecting position. When the relative position of the first clamp jaw and the first handle is changed, a force occurs between the first clamp jaw and the first handle. A moment formed by the force with the first connecting position as a fulcrum is greater than a moment formed by the force with the second connecting position as a fulcrum.

Abstract: Disclosed is an adjustable wrench including a handle and a working portion. The working portion includes an adjusting device and at least two jaws. The jaws are distributed along the circumferential direction of the working portion, and the adjusting device is arranged such as to adjust the jaws to simultaneously move in a radial direction of the working portion, closer to or away from the center of the working portion, that is, the jaw opening defined by the plurality of jaws are adjustable. The adjustable wrench provided by the invention is adapted for workpieces of various specifications, and can realize rapid adjustment.

Abstract: A bubble level using reflection has an elongate body, a first surface and a second surface, and a cavity which has an opening on the second surface and is arranged between the first surface and the second surface. A level arranged in the cavity has a non-opaque body having a sloping surface and a first observation surface. A bubble unit is mounted in the body of the level. The first surface is mounted between the first end of the bubble unit and the measured surface, and the first observation surface is mounted between the second end of the bubble unit and user. The bubble level which uses the reflection of light through the interface makes user can observe the bubble unit from the front when the user measures the verticality.

Abstract: A ratchet clamp, comprises a first clamp arm, a second clamp arm and a ratchet mechanism provided between the first clamp arm and the second clamp arm. An elastic member is arranged between the ratchet mechanism and the second clamp arm. The ratchet mechanism includes a toothed bar, a pivoting member. The pivoting member includes a toothed piece, a housing and a lever. The self lock state of the ratchet clamp of the invention is very safe and stable, the maximum clamping force at the jaw opening portion can reach about 50 Kg, and 85% of the maximum clamping force can be maintained after the user releases the clamp arms.

Abstract: The present utility model discloses a utility knife with dual blades, comprising a housing having an opening at both ends, a blade carrier which is mounted and is movable within the housing, a movement assembly connected to the blade carrier for driving the blade carrier to respectively move in a direction towards both ends of the housing, wherein it further comprises a stop member. The blade carrier is provided with an abutment portion thereon, and the stop member has a stop portion being able to change its position with respect to the abutment portion, so that the blade carrier can move in a single direction so as to prevent the blade carrier from accidentally sliding and pushing the blade out to injure a user.

Abstract: The present invention provides a wrench comprising a handle, having a cylindrical inner surface as a first surface; a torque output member, arranged within the first surface of the handle, the torque output member having a cylindrical outer surface as a second surface; one or more wedging member(s), arranged between the first surface and the second surface; varied distance being between the first surface and the second surface, so that the wedge members can prevent the rotation of the first surface relative to the second surface in a predetermined direction. The wrench according to the present invention adopts wedge member to prevent the rotation of the handle relative to the torque output member. When the handle idles relative to the torque output member, only the wedge member will leave the stop position and no sound will be made. Such a wrench is a quiet wrench. Adopting such a configuration not only can reduce wearing of the wrench, extend the service life of the wrench, and improve the user's experience.