Abstract: A screwdriver, including driver bit sleeve, revolving wheel-shaped driver bit holder and pushrod, the revolving wheel-shaped screwdriver bit holder is rotatably arranged at the rear side of the driver bit sleeve, the revolving wheel-shaped driver bit holder is distributed with axial containing hole containing driver bit and the containing hole can be turned to axially coincide with the inner hole of the driver bit sleeve; pushrod is arranged at the rear side of the revolving wheel-shaped driver bit holder and axially coincides with the inner hole of the driver bit sleeve, the inner hole of the driver bit sleeve includes torque transmission segment at the front part and guiding segment at the rear part, the hole wall of the guiding segment is arranged as guiding surface; and it can also include handle, pushbutton set, pushrod which extends into one of containing holes of driver bit holder when pushbutton set is positioned at first positioning portion of the front part of slideway on the handle, pushing the dri

Abstract: The present invention discloses a connecting structure, a connecting method and an article containing the connecting structure. The connecting structure includes a fastener, a first connecting member adjacent to the trailing end of the fastener and a second connecting member away from the trailing end of the fastener. The second connecting member is provided with a threaded connecting hole, which in the axial direction thereof is provided with thread matching with the form of thread of the fastener and having a central angle of at least 180 degrees. The first connecting member is provided with a connecting hole, and the fastener connects the two connecting members through the threaded connecting hole and the connecting hole. The connecting method achieves quick connecting with the connecting hole of the first connecting member by preloading the fastener to the threaded connecting hole, without being affected by the assembly space.

Abstract: The present disclosure is a bi-directional screwdriver, which includes a handle, a main shaft, a gearing which includes a driving gear, a driven gear, a transmission seat and an idle gear which is mounted on the idle gear axle on the transmission seat and is fitted between the driving gear and the driven gear for transferring motion. The handle rotates the driving gear. A grip ring is securely provided outside the idle gear axle. When the grip ring is gripped and the handle is rotated to rotate the driving gear, the driving gear rotates the driven gear in a reverse direction through the idle gear. The driving gear also has a first inside ratchet surface, and the driven gear also has a second inside ratchet surface.

Abstract: The present invention publishes a knife with a replaceable blade, comprising a housing, a cover arranged on the housing and a blade carrier arranged between the housing and the cover, characterized in that, a blade which can move between an extended position and a retracted position is installed on the blade carrier, and a blade cartridge carrier is arrange around the periphery of a position adjacent to the retracted position of the blade, the blade cartridge carrier is provided with an internal space of a blade shape to place spare blades. Wherein, the cover can be connected with the housing in an open type to fix the blade carrier between the cover and the housing.

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: The present invention discloses a plate-type utility knife comprising a blade carrier, a blade structure and a cover plate, wherein, the blade structure is mounted on the front part of the blade carrier, between the blade carrier and the cover plate, the cover plate makes the blade structure fixed on the blade carrier. The blade carrier includes a main blade carrier plate and a front blade carrier plate, the front blade carrier plate is located in front of the main blade carrier plate, a vacancy that contains the blade structure is arranged on the front side of the main blade carrier plate, the blade structure is arranged in the vacancy, a space for containing the cover plate is arranged on the front side of the front blade carrier plate, the cover plate is mounted in the space. The blade carrier includes a back blade carrier plate, the main blade carrier plate is located between the front blade carrier plate and the back blade carrier plate.

Abstract: A ratchet tool includes a shaft member, a handle and a ratchet mechanism, in which the handle is connected to the ratchet mechanism, and the shaft member extends into the interior of the ratchet mechanism along the central axle of the ratchet mechanism from the front end of the ratchet mechanism and is connected to the ratchet mechanism. The shaft member includes a shaft and an extension portion which passes through the rear end of the ratchet mechanism along the central axle of the ratchet mechanism from the front end of the ratchet mechanism and is connected to the ratchet mechanism, and the shaft is designed to be integrated with or separated from the extension portion. Such a design of the shaft member solves the wobble problem of the shaft. The ratchet tool of the present invention also includes a lighting device. The ratchet tool of the present invention requires small turning force when turning back and has strong capacity of torque transferring, and at the same time achieves lighting feature.

Abstract: The present invention discloses a multifunctional tool, wherein one blade carrier can be folded and stored in one handle, so that the multifunctional tool can be used as scissors and can be used as a utility knife as well. The blade of a blade carrier can be removed, a blade cartridge is mounted on the multifunctional tool, and spare blades can be stored in the blade cartridge. The blade can be replaced by saw blade, so that it can be used as a saw when it is in the form of the utility knife.

Abstract: The present invention discloses a stud sensor, which is used for detecting the object hidden behind a surface, including a first capacitor plate, a second capacitor plate, a first detection circuit coupled to the first capacitor plate, a second detection circuit coupled to the second capacitor plate and a micro control unit. The first detection circuit processes the voltage signal corresponding to the first capacitance of the first capacitor plate and outputs a first voltage signal to the micro control unit. The second detection circuit processes the voltage signal corresponding to the second capacitance of the second capacitor plate and outputs a second voltage signal to the micro control unit. The micro control unit compares the first voltage signal and the second voltage signal to determine the position information including the central position of the object.

Abstract: A ratchet tool includes a shaft member, a handle and a ratchet mechanism, in which the handle is connected to the ratchet mechanism, and the shaft member extends into the interior of the ratchet mechanism along the central axle of the ratchet mechanism from the front end of the ratchet mechanism and is connected to the ratchet mechanism. The shaft member includes a shaft and an extension portion which passes through the rear end of the ratchet mechanism along the central axle of the ratchet mechanism from the front end of the ratchet mechanism and is connected to the ratchet mechanism, and the shaft is designed to be integrated with or separated from the extension portion. Such a design of the shaft member solves the wobble problem of the shaft. The ratchet tool of the present invention also includes a lighting device. The ratchet tool of the present invention requires small turning force when turning back and has strong capacity of torque transferring, and at the same time achieves lighting feature.

Abstract: The present invention provides a pair of scissors comprising handle assembly and scissor head assembly. The handle assembly comprises a first handle and a second handle, and the scissor heads comprise a first scissor head and a second scissor head. The first scissor head is provided with a first blade extending from one end of the first handle. The second scissor head is provided with a second blade extending from one end of the second handle. The first scissor head and the second scissor head are pivotally hinged via a pivot structure, characterized in that, at the connection portion of the scissor head and the pivot structure, a width-thickness ratio of the first scissor head and the second scissor head is small. Such scissors enhances the rigidity of the scissor head greatly and improves the shearing strength of the scissors, facilitating snipping thicker objects to meet the requirements of being suited for various operation subjects.

Abstract: The present invention discloses a plate-type utility knife comprising a blade carrier, a blade structure and a cover plate, wherein, the blade structure is mounted on the front part of the blade carrier, between the blade carrier and the cover plate, the cover plate makes the blade structure fixed on the blade carrier. The blade carrier includes a main blade carrier plate and a front blade carrier plate, the front blade carrier plate is located in front of the main blade carrier plate, a vacancy that contains the blade structure is arranged on the front side of the main blade carrier plate, the blade structure is arranged in the vacancy, a space for containing the cover plate is arranged on the front side of the front blade carrier plate, the cover plate is mounted in the space. The blade carrier includes a back blade carrier plate, the main blade carrier plate is located between the front blade carrier plate and the back blade carrier plate.

Abstract: The present invention provides STING crystals. The present invention also provides STING modulators that interact with sites present in and/or defined by such crystals. The present invention also provides methods of making and using such crystals and modulators. Other aspects and/or features of the present invention will be apparent to those skilled in the art, reading the present specification.

Abstract: The present disclosure is a bi-directional screwdriver, which includes a handle, a main shaft, a gearing which includes a driving gear, a driven gear, a transmission seat and an idle gear which is mounted on the idle gear axle on the transmission seat and is fitted between the driving gear and the driven gear for transferring motion. The handle rotates the driving gear. A grip ring is securely provided outside the idle gear axle. When the grip ring is gripped and the handle is rotated to rotate the driving gear, the driving gear rotates the driven gear in a reverse direction through the idle gear. The driving gear also has a first inside ratchet surface, and the driven gear also has a second inside ratchet surface.

Abstract: A hand tool including a handle with a containing chamber, and a can opener that can be rotatably received in the containing chamber or unfolded connected pivotally to an end of the handle, and the can opener is made of metal material and used to open a paint can lid.

Abstract: The present invention discloses a utility knife, which includes a housing (11, 12) that has an internal chamber (13); a blade carrier for carrying a single blade; a locking piece (7) for locking the single blade in the blade carrier; and a spare blade cartridge (14) for storing more than one spare blade; the blade carrier (16), the locking piece (7) and the spare blade cartridge (14) are arranged in the internal chamber (13), the blade carrier (16) is arranged to be movable between a first position and a second position, and when the blade carrier (16) is at the first position, the blade carried by the blade carrier (16) extends out of the housing, when the blade carrier (16) is at the second position, the blade carried by the blade carrier (16) retracts into the housing; the spare blade cartridge (14) is connected to the housing (11, 12) via an axis pin (111), and is arranged to be able to rotate around the axis pin (111) and out of the internal chamber to load the spare blade.

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 multifunctional tool, wherein one blade carrier can be folded and stored in one handle, so that the multifunctional tool can be used as scissors and can be used as a utility knife as well. The blade of a blade carrier can be removed, a blade cartridge is mounted on the multifunctional tool, and spare blades can be stored in the blade cartridge. The blade can be replaced by saw blade, so that it can be used as a saw when it is in the form of the utility knife.

Abstract: A manual tool capable of unfolding only one work accessory comprises a handle (11, 21), a first work accessory (12, 22) and a second work accessory (13, 23) that are connected to the handle through a pivot and can be unfolded and folded, and an associated accessory (14, 24). The associated accessory can transform the working state from a folding state to an unfolding state. When the first work accessory and the second work accessory are both folded, the associated accessory does not prevent any work accessory from unfolding; and when one of the two work accessories is unfolded and the other one is folded, the associated accessory prevents the other one from unfolding, so as to ensure that only one work accessory can be unfolded during use, thereby eliminating the safety risk caused by unfolding multiple work accessories at the same time.

Abstract: The present invention discloses a bidirectional mechanical converting unit, comprising: a main shaft; a driving mechanism, which including a driving means and a reversing means which are coupled to each other; and a rotation means for inputting torque, an rotation axis of the rotation means being coaxial with the main shaft, the rotation means and the driving mechanism being coupled to each other, and the driving mechanism delivering the torque to output at the main shaft at a predetermined direction, no matter in which direction the rotation means rotates; wherein the predetermined direction can be switched via the reversing means. The present invention is simple structured, not only can efficiently utilizes the movements of the rotation means in either way, but also can switch the rotation direction of the output shaft conveniently upon demand, with easy operations.