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 an open-close device, including a first member, a second member, a third member and a fourth member; the second member is rotatably connected to the first member, the third member is rotatably connected to the first member, the fourth member is rotatably connected to the second member and rotatably connected to the third member; the open-close device further includes an angle adjusting device which is provided at a joint between the third member and the first member, for adjusting the bending angle of the third member with respect to the first member.

Abstract: A method of manufacturing a cutting member include cutting a first metal material to form a first portion of the cutting member; cutting second metal material to form a second portion of the cutting member, wherein a first edge of the second portion has at least two line segments, a curve formed by the at least two line segments being mathematically continuously differentiable; welding the first portion and the second portion together; raising the cutting member blank to a first temperature at a first rate and holding raising the cutting member blank from the first temperature to a second temperature at a second rate lower than the first rate and holding, and raising the cutting member blank from the second temperature to a third temperature at a third rate not higher than the second rate and holding.

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: A power-assisted folding knife, 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; the power-assisted folding knife further includes a power-assisting mechanism connected to the blade holder and the handle, for providing assisting power when unfolding a power-assisted folding knife. 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; 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: A handle includes an inner core and a gripping portion disposed around the periphery of the inner core, and at least one chamber is formed between the inner core and the gripping portion. A hammering tool includes the handle. When the hammering tool is used for striking, the internal damping slot of the hammerhead can use a damping material as a first buffering and absorb the vibration and impact force of the hammerhead, which are then delivered to the inner core of the handle, the inner damping layer and its chamber serve as a second buffering and absorb the vibration and impact force delivered from the inner core of the handle, and finally, the outer damping layer serves as a third buffering and absorbs the vibration and impact force delivered from the inner damping layer.

Abstract: The present invention provides a pull riveting system including two or more pull-rivets and a riveting device, the pull-rivet including a rivet mandrel; the riveting device including two or more rivet gun heads, each provided with a rivet gun hole; wherein each of the pull-rivets is provided with a first label; each rivet gun head is provided with a second label; when one pull-rivet is matched with one rivet gun head, the rivet mandrel of this pull-rivet is applicable to the rivet gun hole of the rivet gun head, and the first label of the pull-rivet is the same as or corresponds to the second label of the rivet gun head.

Abstract: The present invention provides a pull riveting system including two or more pull-rivets and a riveting device, the pull-rivet including a rivet mandrel; the riveting device including two or more rivet gun heads, each provided with a rivet gun hole; wherein each of the pull-rivets is provided with a first label; each rivet gun head is provided with a second label; when one pull-rivet is matched with one rivet gun head, the rivet mandrel of this pull-rivet is applicable to the rivet gun hole of the rivet gun head, and the first label of the pull-rivet is the same as or corresponds to the second label of the rivet gun head.

Abstract: The present invention relates to a distance measuring device, which includes a shell and a laser ranging device provided at the inside and/or the outer surface of the shell. The advantages of the invention lie in that a distance measuring device is provided, which combines the tapeline with the laser ranging device, possessing both short distance measuring and long distance measuring functions, and has such features as simple operation, convenience for carrying, lower cost, high measuring accuracy, etc., being suitable to be widely used in applications such as in the fields of construction work, interior decoration, measurement in danger zone, etc.

Abstract: The present invention provides a distance measuring device, comprising a casing, a third housing, a tapeline structure and a laser ranging device, in which the casing is comprised of a first housing and a second housing; the third housing is arranged between the first housing and the second housing, and rounding together with the second housing to form a tapeline cavity; the tapeline structure is arranged inside the tapeline cavity; and the laser ranging device is arranged between the first housing and the third housing.

Abstract: The present invention provides a blade-replaceable cutting tool, which includes: a first handheld portion and a second handheld portion; the second handheld portion is rotatably connected to the first handheld portion; and further includes a blade mounting plate and a blade, the blade mounting plate is rotatably mounted to the first handheld portion; the blade is detachably mounted to the blade mounting plate. Wherein, the blade mounting plate and the blade may be replaced with a ratchet blade which is detachably and rotatably mounted to the first handheld portion.

Abstract: The present invention provides a retractable cutting tool, which includes: a cutting tool housing, the interior thereof forming a cavity; a blade exit portal, penetrating through the cutting tool housing and communicating with the cavity; a blade holder, moved or locked in the cutting tool housing; a blade, mounted to the blade holder and disposed opposite the blade exit portal; when the blade holder is moved, the front end of the blade protrudes out of the cutting tool housing or retracts into the cutting tool housing through the blade exit portal; a blade holder moving device, for moving the blade holder in the cutting tool housing; and a protrusion length control device, for controlling the protrusion length of the blade outside the cutting tool housing.

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: A hand tool provided with a first handle, a second handle, a first working portion, a second working portion and a working portion connecting mechanism. The first handle is fixedly connected to the first working portion, the second handle is pivotably connected to the second working portion, and the second working portion is connected to the first working portion through the working portion connecting mechanism, the second working portion has a first position and a second position, and the working portion connecting mechanism causes the second working portion to be moved from the first position to the second position when the second handle is moved from away from the first handle to closer to the first handle. The first position is the position where the second working portion is located away from the first working portion, and the second working portion is rotated and translated relative to the first working portion when the second working portion is in the second position.

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: The present invention provides a power-assisted folding knife, comprising a handle, a blade, a locking mechanism, an assisting mechanism and a second assisting mechanism. The blade is rotatably connected to the handle. The locking mechanism and the second assisting mechanism are provided inside the handle. The assisting mechanism is connected to the handle and the blade respectively. When the blade is in a folded position, the assisting mechanism and the second assisting mechanism are used for locking or unlocking the blade. When the blade is in an unfolded position, the locking mechanism is used for locking or unlocking the blade. When the power-assisted folding knife is unfolded, the assisting mechanism and the second assisting mechanism provide assisting force for the blade and/or the handle.

Abstract: The present invention provides a lighting equipment, which successively includes a lamp head portion, a connecting portion and a tail portion; the lighting equipment further includes a short distance light source, a long distance light source, a power supply and a control switch. The short distance light source and the long distance light source are arranged inside the lamp head portion, and the light emitting direction of the short distance light source is consistent with that of the long distance light source. The power supply is provided inside the connecting portion, a positive electrode and a negative electrode of which are electrically connected to two ends of the short distance light source and two ends of the long distance light source respectively. The control switch is used for controlling a light and shade state of the short distance light source and the long distance light source.

Abstract: The present invention provides an open-close device, including a first member, a second member, a third member and a fourth member; the second member is rotatably connected to the first member, the third member is rotatably connected to the first member, the fourth member is rotatably connected to the second member and rotatably connected to the third member, the open-close device further includes an angle adjusting device which is provided at a joint between the third member and the first member, for adjusting the bending angle of the third member with respect to the first member.

Abstract: Disclosed is a manual tool capable of unfolding only one work accessory. The conventional manual tools may bring hidden risk to safety with more than two work accessories that may be unfolded simultaneously.

Abstract: The present invention provides an open-close device, including a first member, a second member, a third member and a fourth member; the second member is rotatably connected to the first member, the third member is rotatably connected to the first member, the fourth member is rotatably connected to the second member and rotatably connected to the third member; the open-close device further includes an angle adjusting device which is provided at a joint between the third member and the first member, for adjusting the bending angle of the third member with respect to the first member.