43results about "Wrenches" patented technology

A hammer drill/driver with a motor having an output member, a planetary transmission, a clutch assembly and a clutch bypass. The planetary transmission, which includes a ring gear, receives rotary power from the output member and produces a rotary output. The clutch assembly has a clutch profile, which is coupled to the ring gear, and a first pin assembly having a first follower, a first pin member and a first spring that biases the first follower into contact with the clutch profile. The clutch bypass has a bypass profile, which is coupled to the ring gear, and second pin assembly having a second follower, a second pin member, a third spring, which biases the second follower away from the bypass profile, and a fourth spring, which biases the second follower away from the second pin member. A method for operation of a hammer drill/driver is also provided.

A screw positioning sleeve assembly capable of quickly connecting a locking tool comprises an inner sleeve slideably received in an outer sleeve, and the moving distance of the outer sleeve varies with the depth of the locking groove, so that the inner sleeve can be engaged with an ordinary tool rod or a screwdriver to screw or unscrew a screw. When screwing or unscrewing, a magnet in the outer sleeve can attract the screw. During the screwing and unscrewing process, the positioning sleeve can move towards the screw to make the magnet keep attracting the screw, thus preventing the screw from screwing or unscrewing falling off. It is noted that the rod body of the tool rod or the screwdriver can connect with the screw positioning sleeve assembly without any additional preformed structure. Therefore, the scope of applicability of the screw positioning sleeve assembly is enlarged considerably.

A rechargeable battery pack for a handheld power tool, encompasses a housing and at least one interface unit for establishing a mechanical and electrical connection between the rechargeable battery pack and the handheld power tool and/or a charging device. The interface unit has at least one locking element for locking the rechargeable battery pack onto the handheld power tool, and an actuation element for actuating the locking element. The actuation element encompasses at least one light-emitting element for outputting an optical signal and/or for illumination.

A torque reaction control jig that transfers reaction torque from a drive member to a wheel upon tightening of a spindle nut onto a vehicle axle. The jig includes a jig body, an alignment member, and a barrier member. The jig body is secured to the drive member in a non-rotatable fashion. The alignment member includes a pair of stud nests that are each adapted to slidingly receive a wheel stud. The barrier member is secured to the jig body in a location such that the barrier member will engage the wheel stud should the jig be misaligned with the wheel. Engagement between the barrier member and the wheel prevents further tightening of the spindle nut onto the axle until the jig is properly aligned with the wheel.

A bi-directional ratchet wrench includes a handle with a head at a front side formed a housing trough to hinge a ratchet wheel which has ratchet teeth on the perimeter and a knob strut jutting from one end surface, a switch element located in a swivel space formed at the housing trough with a plurality of harness teeth formed respectively on the left and right sides of a front end to allow the harness teeth on one side to engage with the ratchet teeth, and having a rear side formed with two concave portions, and confined at a selected swivel angle on the left and right sides by two retaining troughs formed in the swivel space, a butting unit having an elastic element embedded in the head and a spherical butting member butting the concave portions, and a sealing lid to seal the ratchet wheel and switch element.

A combination includes a ratchet wrench and a driving member. The ratchet wrench includes a body and a ratchet wheel mounted in the body and rotatable relative to the body about a rotational axis. A driving hole extends through from a side through the other side of the body along the rotational axis and includes an inner periphery having a plurality of abutment surfaces. A corner is formed between each two adjacent abutment surfaces. At least one limiting portion protrudes from the inner periphery of the driving hole in a radial direction perpendicular to the rotational axis. The driving member includes at least one evasive portion and is coupled to the driving hole. The driving member is movable between a first coupling position and a second coupling position along the rotational axis when the at least one evasive portion is aligned with the at least one limiting portion.

The invention discloses a ratchet screwdriver reversing device, which comprises a wheel seat and a ratchet rod, wherein the wheel seat is arranged at the front end of a ratchet screwdriver, and is provided with an accommodating hole; symmetrical accommodating grooves are connected to two sides of the accommodating hole; the accommodating hole is connected with a movable groove between the two accommodating grooves; a clamping block is arranged in each accommodating groove; one side of each clamping block is provided with unidirectional clamping teeth, the opposite side of each clamping block is pressed against the wall surface of a corresponding accommodating groove through a spring; the ratchet rod is that a ratchet is annularly arranged on a rod body; the front end of the rod body is provided with a slot for a screwdriver head for insert; the ratchet is arranged in the accommodating hole and meshed with the clamping teeth of the clamping blocks through ratchets; the wheel seat is sleeved with a cover which is provided with a cover hole for the rod body to penetrate; the inner side of the cover is provided with a pressing block corresponding to the movable groove; and the pressing block extends into the movable groove together with the sleeving of the cover on the wheel seat, and the cover rotates relative to the wheel seat. The production convenience is improved, abrasion is effectively reduced, the advancing and retreating smoothness of the clamping blocks is improved, and the material cost of the wheel seat is saved.

A ratchet wrench includes a driving device having first and second sides spaced along a rotating axis. A compartment extends from the first side through the second side. A drive member is received in the compartment and includes an end for driving a tool. A ledge is formed on an inner periphery of an end of the compartment at the second side. A pressing rod extends into the drive member via the end of the compartment at the second side. The pressing rod is movable relative to the drive member along the rotating axis between a first position and a second position to control engagement with or detachment from the tool. A dustproof ring is mounted between the ledge and the pressing rod. The dustproof ring includes an outer side and an inner side. The outer side presses against an abutment portion of the ledge. The inner side presses against the pressing rod wherever the pressing rod is in the first position and the second position.

A power input end and a power output end are provided. The tool has an interior bore along its entire length. The tool has an exterior surface with a hexagonal cross sectional configuration along its length from the power input end. The tool has a surface with a square cross sectional configuration from the power output end.

An impact tool includes a housing, a motor having an output shaft defining a first axis, a drive shaft rotatably supported by the housing about a second axis oriented substantially normal to the first axis, and an impact mechanism coupled between the motor and the drive shaft and operable to impart a striking rotational force to the drive shaft. The impact mechanism includes an anvil rotatably supported by the housing and coupled to the drive shaft and a hammer coupled to the motor to receive torque from the motor and impart the striking rotational force to the anvil. A ratcheting mechanism prevents rotation of the drive shaft in a selected direction relative to the housing and includes first and second pawls movably coupled to one of the drive shaft and the housing, and ratchet teeth defined on the other of the drive shaft and the housing.

The invention relates to a stop mechanism and torque adjustment mechanism for rotary tool, the stop mechanism can loosely keep the torque setting of dynamo-electric screwdriver (100), the stop mechanism includes a nose-shaped ring (103) which can be mounted on the casing (101) of the screwdriver (100) and has a series of torque setting positions which can be indicated as peak torque transferring from the gear case (104) to shaft of the screwdriver (100). The elastic stop part (108) joints the nose-shaped ring (103) with the gear case (104), so the nose-shaped ring (103) can be prevented away from movement of each torque setting position by means of elasticity of the stop part (108), and the nose-shaped ring (103) can be loosely kept on the proper position by means of elasticity of the stop part (108).

A wrench is configured to engage a fastener for rotation. In one embodiment, the wrench comprises a base, a pair of jaws, a pair of threaded shafts, an adjusting ring, and/or a sleeve. The position of the pair of jaws along the base may be adjustable to accommodate fasteners of different sizes.

The invention discloses a multifunctional hardware wrench. The multifunctional hardware wrench comprises a first support plate, wherein a head is fixedly connected to the left side of the first support plate, a first through hole is formed in the right side of the front surface of the head, a first long hole is formed in the right side of the first support plate, a second support plate is arrangedin the first long hole, a first fixed block is fixedly connected to the left side of the second support plate, and a first groove which is matched with the first fixed block is formed in the left side of the front surface of the first support plate. According to the multifunctional hardware wrench, the first support plate is arranged, so that the effect of fixing the head and the second support plate is achieved; the first through hole is formed, so that the effect of removing bolts of different sizes is achieved; the first support plate and the second support plate are arranged, so that theeffect of increasing the wrench holding length of a user is achieved; a clamping block and a clamping groove are arranged and formed, so that the effect of fixing a connecting block is achieved; and ascrewdriver head is arranged, so that the effect of removing bolts and screws is achieved. The wrench has multiple functions and is convenient to use by the user.

The invention provides a quick screwing sleeve of a double-end stud. The quick screwing sleeve comprises an inner sleeve body (2) serving as an elastic chuck, and an outer sleeve body (3) sleeved outside the inner sleeve body (2) and serving as a locking sleeve. The outer side of the front end of the outer sleeve body (3) is in threaded connection with a nut (1), the outer side of the rear end of the outer sleeve body (3) is in threaded connection with a connection sleeve (5), and four Achimedean spirals are uniformly distributed in the radial section of the surface where the inner sleeve body (2) is contacted with the outer sleeve body (3). The quick screwing sleeve can be installed on a pneumatic (electric) wrench, the wrench is rotated, the double-end stud to be screwed can be screwed, then the double-end stud is driven to be screwed into a screw hole in a machine body, the stud is automatically locked when encountering resistance, and the larger the resistance is, the larger the locking force is, and the locking force in increased along with the resistance until the stud is screwed in the screw hole in the machine body. Then the wrench is reversely rotated, the stud can be released, reverse friction torque does not exist, and the stud can be easily screwed out.

The invention relates to a circular universal spanner. The circular universal spanner comprises a shell; the shell takes the shape of a cylinder with a closed top end; a storage power supply is fixed on the inner top surface of the shell; an on-off switch of the storage power supply is arranged at the top of the shell; a closed liquid storage cavity is formed below the storage power supply; a water replenishing hole and a drain hole are formed in the liquid storage cavity; the drain hole is formed in the lower bottom surface of the liquid storage cavity; an elastic film sealed with the shell is arranged at the lower part of the liquid storage cavity; the elastic film, the shell and the lower bottom surface of the liquid storage cavity surround a twisting cavity; a plastic material is filled in the twisting cavity; the plastic material is high in hardness during drying and low in hardness during wetting; and heating wires are arranged in the twisting cavity, and are electrically connected to the storage power supply. The circular universal spanner is novel in structure and stable and tight in engaging force, can easily and safely twist a valve, and effectively improves the working safety and stability.

The invention discloses a screwdriver with a massage function, which comprises a screwdriver head and a screwdriver handle, and a massage magnet is fixedly arranged on the screwdriver handle. The massage screwdriver of the present invention makes up for the defect of the single function of the traditional screwdriver. The massage magnet on the handle of the screwdriver can massage the acupoints of the hand and relieve the pressure and pain on the hand when the screwdriver tightens the nut or bolt.

A ratchet wrench includes a through hole defined through the head of the wrench and a recess is defined in the inner periphery of the through hole. A circular hole is defined through the head and communicates with the recess. A ratchet wheel is rotatably received in the through hole of the head. A pawl is movably located in the recess and engaged with the ratchet wheel. A switch member is rotatable inserted into the circular hole and has a lever located outside of the head of the wrench. A slot is defined transversely in the switch member. The slot is located corresponding to the recess. The switch member receives one end of a spring which biases a tubular member contact the pawl. The pawl has a flange which is located in the slot such that the switch member does not drop from the circular hole.

The invention discloses an automatic screwdriver. The automatic screwdriver comprises a screwdriver body, a conveying mechanism and a lifting device, wherein the conveying mechanism comprises a hose and a feeding end, a vertically-through central conical hole is formed in the feeding end, and the central conical hole is formed in the screwdriver body in a sleeving mode and can slide relative to the screwdriver body; the hose is connected with the feeding end and used for supplying screws to the feeding end; the lifting device comprises a fixed cylinder and a lifting connecting rod, one end ofthe lifting connecting rod is arranged in the fixed cylinder in a penetrating mode, and the other end of the lifting connecting rod is connected with the feeding end; and the fixed cylinder is connected with a device capable of driving the lifting connecting rod to ascend and descend, and the lifting connecting rod can drive the feeding end to ascend and descend during ascending and descending. According to the automatic screwdriver provided by the embodiment of the invention, a screw does not need to be manually held by a worker, convenience and quickness are achieved, and the working efficiency is improved.

The invention relates to a wrench. The wrench comprises a handle part and a head part which is at least arranged at one end of the handle part, wherein the handle part is in the shape of a long plate; the head part comprises a body and an opening part; the opening part is the same as half of an outer contour of a nut; the opening part is provided with two bent angles; a magnetic substance is arranged in the head part body; vertical grains extending in the length direction of the handle part are arranged on the side surface of the handle part; and the bent angles of the opening part are subjected to thermal treatment. The wrench has the advantages that: the magnetic material is arranged in the head part body of the wrench, so that at a position inconvenient for placing hands, the wrench can be placed on an inclined plane; friction between a palm and the wrench is increased by vertical grains in the wrench even the wrench is liable to slide during process and is inconvenient to hold when a worker wears gloves for operation in cold weather, so that the wrench is not liable to slide even the worker wears the gloves, thereby improving the processing efficiency; and hardness at bent parts of the opening part is relatively high, so that the service life of the wrench is longer.

Systems, method, and apparatus for locking a movable component of a tool into an operationally static position. A locking mechanism embedded within an interior cavity of a tool is operationally connected to a squeeze handle via a linkage assembly. When the handle is squeezed, the linked assembly drives the locking mechanism toward the movable component. Corresponding gear racks on the locking element and movable element inhibit movement in both vectors, using a zero degree pressure angle to strongly inhibit movement in another factor, and using a non-zero degree pressure angle to less firmly inhibit movement in an opposing vector.

An auxiliary device includes a base, two rotatable arms, and an elastic member. The two arms are rotatably connected to the base and each includes a mating surface that defines a recess. The recesses of the two arms cooperatively form a through hole when the mating surface is in contact with each other. The through hole includes, from top to bottom, a first tapered hole portion, an annular groove, a second tapered hole portion, and a round hole portion. The annular groove is used to receive a head of a screw, and the round hole portion has a lateral surface is used to contact a shank of the screw to keep the screw upright. The elastic member is arranged between the two rotatable arms and applies a pushing force to the two rotatable arms.

The invention discloses a control method and a control system of a servo electric screwdriver. The control method comprises the steps that preset servo parameters of the servo electric screwdriver are configured, and the preset servo parameters are obtained from a database; a controller is started to input preset servo parameters so as to enable the servo electric screwdriver to operate, and a torque value is detected through real-time torque so as to construct a torque curve model; whether the torque value of the torque curve model exceeds a preset range within a preset time or not is judged to obtain a judgment result; a preset servo parameter is adjusted according to the judgment result; and the controller is started to input the adjusted servo parameters so as to enable the servo electric screwdriver to operate, and a torque value is detected through real-time torque so as to construct a new torque curve model. According to the method, the torque curve is constructed according to real-time data of the servo electric screwdriver, and corresponding torque, speed and servo turns are adjusted according to changes of the torque reflection curve so as to make a servo electric screwdriver control strategy; and the screw driving process of the servo electric screwdriver is controllable, informatization butt joint is achieved, full-automatic production is achieved, and the production efficiency is improved.