Abstract: A switch module with an automatic switching function and a method for automatically switching the switch module according to the load, wherein a first comparator and a second comparator are configured to automatically determine whether the load is light or heavy according to the voltage divided by a first resistor and a second resistor and the voltage of a source resistor, thereby generating a voltage control signal. A plurality of transistors are configured to receive a gate input signal according to the voltage control signal, thereby selectively bringing a GaN transistor or a MOSFET transistor in a conducting state. In this way, the output quality and efficiency of the power supply at light and heavy loads can be improved according to the characteristics of different transistors.

Abstract: A rear disc brake plate is composed of a ventilation disc, a brake drum, and a fixing disc, wherein upon screwing the ventilation disc, the brake drum, and the fixing disc, a plurality of screws can be used to configure them into the rear disc brake plate which is light in weight and has an extremely high sharing property. The rear disc brake plate is a device whose structures can be assembled separately; therefore, when any structure is worn out, it can be replaced independently, thereby keeping pleasing and environmental benign and saving resource.

Abstract: This invention discloses a three-in-one combination wrench. A preferred embodiment features an easily assembled ratchet wrench in the middle of the wrench body, suitable for operation in confined spaces. The combination wrench terminates at one end in a pair of opening jaws for engaging fasteners of various sizes that fit into the jaws; and at the other, in an adjustable mortise-tenon pivotal wrench for approaching fasteners from an optimal angle to maximize torque with least effort. Furthermore, a substantially symmetrical streamlined dual-handle is ergonomically configured for a comfortable holding gesture.

Abstract: An adjustable wrench includes a handle having an end on which a fixed jaw is formed. The handle includes an engaging section and a transverse through-hole. A movable jaw includes a longitudinal hole through which the engaging section of the handle extends, allowing the movable jaw to slide relative to the handle. A retaining member is movably mounted in the transverse through-hole of the handle and biased by an elastic element to a position where toothed sections of the retaining member are engaged with toothed sections of the movable jaw, thereby retaining the movable jaw in place. The retaining member can be pushed to another position wherein the toothed sections of the retaining member are disengaged from the toothed sections of the movable jaw, allowing the movable jaw to slide relative to the fixed jaw.

Abstract: A notebook type toolbox includes a casing and a cover pivotally connected to and releasably engaged with the casing. The casing includes shaped grooves for receiving tools and a handle. A bottom of the casing includes two pivotal sections in two ends thereof, respectively. Each of two lower corner areas of the casing is cut to form a space. Each of two lateral walls of the casing includes an end face facing the space. The cover has two lateral sides with a view opening therebetween. Each lateral side has a pivotal section pivotally engaged with an associated pivotal section on the casing. The cover is pivotable to a first position for engaging with the casing in which the tools can be viewed via the view opening and a second position that supports the casing in an inclined status in which the end faces rest on an outer side of the cover.