Abstract: The present invention provides a screwdriver which includes a shaft, a handle and a speed increasing mechanism, in which the speed increasing mechanism includes a central axle connected to the shaft and provided with a toothed part on its periphery, a first member is disposed in the interior of the handle, at least one gear is connected to the first member, and a geared sleeve is sheathed outside the gear, in which the inner side of the geared sleeve has teeth on corresponding positions, engaging with the gear which is disposed at a side part of the central axle and is engaged with the toothed part of the periphery of the central axle. The present invention also includes a locking mechanism addressing the problem of torque being not high.

Abstract: The present invention discloses a pair of adjustable pliers comprising a first handle having a first gripping part arranged at the front end thereof and a second handle having a second gripping part arranged at the front end thereof. The first gripping part and the second gripping part forms a jaw span, and the first handle and the second handle are arranged in an intersectional manner and relatively fixed via a connecting mechanism, characterized in that, the second handle is provided with an elongated rack slot at a position of the connecting mechanism and the rack slot is provided with a toothed rack on a inner side part thereof. The connecting mechanism comprises a toothed block and a link mechanism, the toothed block is arranged inside the rack slot and engaged with the toothed rack of the rack slot, and the link mechanism connects with the toothed block, drives the toothed block to rotate and disengages from the rack slot.

Abstract: A screwdriver comprises a handle. A wire stripping component is arranged inside the handle; an opening corresponding to a working portion of the wire stripping component is provided on the handle. Owing to the built-in wire stripping component, the screwdriver has the wire stripping function. Also disclosed is a handle applied to the screwdriver.

Abstract: The present invention discloses a glue bottle with flow regulation, including a bottle body, a bottle cap engaged with the bottle body, and further including a liquid outlet cap engaged with the bottle cap through thread. The bottle cap is partially contained in the liquid outlet cap. A cavity is formed between the inner wall of the liquid outlet cap and the outer wall of the bottle cap, and is provided with a first opening and a second opening. The first opening is formed in the bottle cap and the second opening is formed in the liquid outlet cap. A seal body is arranged on the top part of the bottle cap, and is positioned inside of the cavity. The position of the seal body in the cavity is adjusted by rotating the liquid outlet cap relative to the bottle cap. The closer the seal body is to the second opening, the smaller the gap is between the liquid outlet cap and the bottle cap.

Abstract: The invention discloses a utility knife preventing its blade from accidental detachment. Prior utility knives may lose constraint on the blade due to tilting of the retaining member when the blade receives external force from the blade holder pulling outward, causing the blade to detach accidentally from the blade holder. In the present invention, the line of the action force in the engagement area of blade and retaining member extends over the axis of axle pin where the retaining member is mounted, so that when the blade receives external force pulling it outward from the blade holder, a counterclockwise torque is formed to the retaining member to allow the retaining member constrain the blade more tightly and thus prevent the blade from accidental detachment.

Abstract: The thickness of the thin bidirectional ratchet wrench of the present disclosure is preferably less than or equal to 30.0 mm, it can be used in narrow spaces easily, achieves two working modes, and can convert between them conveniently and stably. During use of the thin bidirectional ratchet wrench of the present disclosure, the input torque that the operator exerts is a clockwise torque or a counterclockwise torque, the output torque of the output end of the thin bidirectional ratchet wrench of the present disclosure is a clockwise torque or a counterclockwise torque, alternatively.

Abstract: The bidirectional wrench of the present disclosure achieves two working modes and can convert between them conveniently. During use of the bidirectional wrench of the present disclosure, the input torque that the operator exerts is a clockwise torque or a counterclockwise torque, the output torque of the output end of the bidirectional wrench of the present disclosure is a clockwise torque or a counterclockwise torque, alternatively.

Abstract: A screwdriver comprises a handle. A wire stripping component is arranged inside the handle; an opening corresponding to a working portion of the wire stripping component is provided on the handle. Owing to the built-in wire stripping component, the screwdriver has the wire stripping function. Also disclosed is a handle applied to the screwdriver.

Abstract: Pliers with adjustable jaw span have a first member (1) and a second member (2) which cooperate with each other. A long slot (13) is formed in the first member (1). The second member (2) is connected with the first member (1) by means of a pivot (3) passing through the long slot (13), and rotatable around the pivot (3) relative to the first member (1), while adjusting the span of the jaws by varying the position of the pivot (3) within the long slot (13). The edge of the long slot (13) is provided with ratchet teeth (14). The pivot (3) is engaged with the ratchet teeth (14) by a pawl (31), thus the pivot is movable within the long slot (13) in a first direction and immovable in a second direction which is opposite to the first direction. The pliers are convenient to operate because when the position of the pivot (3) is moved within the long slot (13), the user's operation is required only for the movement in one direction.

Abstract: The present invention first provides a utility knife with a replaceable blade, comprising a knife handle, a blade holder, a blade and a locking device that locks the blade in the blade holder. The blade holder and the blade are enabled to switch between a first position and a second position. When the blade holder and the blade are in the first position, the blade is used for cutting operation, and when the blade holder and the blade are in the second position, both the blade holder and the blade are received in the knife handle. The utility knife further includes a restriction means which is thus arranged as, when the blade holder is in the second position and the locking device is in unlocked state, the restriction means is used for preventing the detachment of the blade from the blade holder by confining the movement of the blade relative to the blade holder.

Abstract: A spring clamp includes a first body which comprises a gripping portion and a clamping portion, a second body which comprises a gripping portion and a clamping portion, a first pivot element which pivotally connects the first body and the second body, and a locking mechanism which comprises at least a pair of friction pair components. The first friction pair component is arranged on the first body, and includes a first friction pair element; and the second friction pair component is arranged on the second body, and includes a second friction pair element. The first and second friction pair elements rub against each other to effect the locking function. The rubbing of the friction pair elements occurs mainly in the plane perpendicular to the first pivot element axis.

Abstract: The invention discloses an adjustable wrench, including a wrench body and a worm; the wrench body includes a handle and a working part; the working part includes a fixed member, a movable member and a track; the lower portion of the movable member, whose bottom edge is arranged with a tooth part, is arranged in the track; the working part also includes a through hole in which the worm is arranged for meshing with the tooth part; when the worm is rotated, the worm interacts with the tooth part and drives the movable member to move in the directions towards or away from the fixed member; wherein the worm has at least two starts of threads. The adjustable wrench of this invention enables swift adjustments to the spacing between the movable member and the fixed member and increases the bearable torque of the worm.

Abstract: The invention discloses a utility knife preventing its blade from accidental detachment. Prior utility knives may lose constraint on the blade due to tilting of the retaining member when the blade receives external force from the blade holder pulling outward, causing the blade to detach accidentally from the blade holder. In the present invention, the line of the action force in the engagement area of blade and retaining member extends over the axis of axle pin where the retaining member is mounted, so that when the blade receives external force pulling it outward from the blade holder, a counterclockwise torque is formed to the retaining member to allow the retaining member constrain the blade more tightly and thus prevent the blade from accidental detachment.

Abstract: The invention discloses a utility knife, including at least a utility knife body, which has a first end part and a second end part; the first end part is arranged with a first mounting bracket, and the second end part is arranged with a second mounting bracket. A first blade is arranged detachably on the first mounting bracket; a second blade is arranged detachably on the second mounting bracket. Users can select appropriate blades to work during operation, or alternatively use different blades to operate without replacing blades. When a blade on one end becomes non-serviceable, users can immediately switch to use the blade on the other end to continue operation, which prolongs the time of continuous work and enhances the efficiency.

Abstract: The present invention provides a tool handle and manufacturing method thereof. The tool handle includes a handle body with a gripping part, and a covering layer that covers a part or whole of the gripping part. The covering layer is made of an artificial leather material. The manufacturing method for the tool handle includes the step of covering the artificial leather material on the gripping part of the handle body, so as to form the covering layer that covers a part or whole of the gripping part. The tool handle and manufacturing method thereof according to the present invention can effectively improve the anti-skid and shock absorbing performance of the tool handle and reduce molding dies and injection molding steps. Therefore, the present invention is simple in manufacturing method and low in production cost.

Abstract: Pliers with adjustable jaw span have a first member (1) and a second member (2) which cooperate with each other. A long slot (13) is formed in the first member (1). The second member (2) is connected with the first member (1) by means of a pivot (3) passing through the long slot (13), and rotatable around the pivot (3) relative to the first member (1), while adjusting the span of the jaws by varying the position of the pivot (3) within the long slot (13). The edge of the long slot (13) is provided with ratchet teeth (14). The pivot (3) is engaged with the ratchet teeth (14) by a pawl (31), thus the pivot is movable within the long slot (13) in a first direction and immovable in a second direction which is opposite to the first direction. The pliers are convenient to operate because when the position of the pivot (3) is moved within the long slot (13), the user's operation is required only for the movement in one direction.