Abstract: A throttle control method for a mobile device include collecting input data, generating a first set of user experience indices according to the input data, and checking whether a user experience index of the first set of user experience indices satisfies a UEI threshold. The input data includes common information data, current configuration data and a plurality of throttle control parameters. Each user experience index of the first set of user experience indices is corresponding to at least one of throttle control parameter of the plurality of throttle control parameters.

Abstract: A bit quick-release device includes a housing having a longitudinal hole in which a first spring and a plunger are respectively received therein. A damping member is located in the longitudinal hole and a radial hole is defined through a wall of the housing so as to receive a locking bead therein. A stop bush is movably mounted to the plunger and a limit ring is mounted to the plunger to prevent the plunger from moving further toward the first spring. A sleeve is movably mounted to the housing and a shoulder portion extends inward from an inner periphery of the sleeve. A second spring is mounted to the housing and biased between the shoulder portion and a stop ring mounted to an outside of the housing.

Abstract: A tool structure having drilling, chamfering and locking functions includes a quick clamping head, and a tool mounted on the quick clamping head. The tool has a first end formed with a chamfered portion and a drilling head secured on the chamfered portion, and a second end formed with a locking portion. Thus, the tool co-operates with the quick clamping head to perform the locking, chamfering and drilling work, thereby facilitating the user operating the tool, and thereby enhancing the working efficiency.

Abstract: A chuck device includes a tube with a plurality of inclined holes defined therethrough and a plurality of clamping members are respectively inserted in the inclined holes. Each clamping member has teeth defined in an outside thereof. A nut is mounted to the tube and has threads defined in an inner periphery thereof so as to be engaged with the teeth of the clamping members. A groove is defined in the inner periphery of the nut and balls are received in the groove. A pressing ring is received in the nut and positions the balls. A sleeve is mounted to the nut and has protrusions on an inner periphery of the sleeve, the protrusions being engaged with notches defined in an outer periphery of the nut. When rotating the sleeve, the nut is rotated to move the clamping members.

Abstract: A chuck device includes a tube with a plurality of inclined holes defined therethrough and a plurality of clamping members are respectively inserted in the inclined holes. Each clamping member has teeth defined in an outside thereof. A nut is mounted to the tube and has threads defined in an inner periphery thereof so as to be engaged with the teeth of the clamping members. A groove is defined in the inner periphery of the nut and balls are received in the groove. A pressing ring is received in the nut and positions the balls. A sleeve is mounted to the nut and has protrusions on an inner periphery of the sleeve, the protrusions being engaged with notches defined in an outer periphery of the nut. When rotating the sleeve, the nut is rotated to move the clamping members.

Abstract: A unidirectional drive tool mechanism includes a housing having three or more recesses formed in the inner peripheral surface. A shaft is rotatably engaged in the housing. Three or more pairs of rods are engaged in the recesses and three or more springs may bias the rods to engage with the ends of the recesses. A cap is engaged on the housing and has three or more poles extended inward of the housing for engaging with the rods. The pairs of rods each includes one rod forced to engage with one end portion of the recesses such that the shaft may be driven in one direction only, and each includes the other rod forced to engage with the other end portion of the recesses such that the shaft may be driven in the reverse direction only.