Patent ID: 9238298
Filing Date: 2016-01-19
CPC Classification: B25C

Claim Text:
1. An electric nail gun adapted for driving a nail into an article, comprising a gun body, a safety member movable to press against the article to thereby move in the gun body, a kinetic power unit disposed in the gun body for generating kinetic energy, an impact unit for outputting kinetic energy to perform a nail-striking operation, a transmission unit for transmitting the kinetic energy from the kinetic power unit to the impact unit, and a two-switch device including: a trigger unit including a trigger adapted to be disposed pivotally on the gun body, and an inner plate disposed pivotally on said trigger such that, when said safety member is pressed against the article to move in the gun body, said inner plate is driven by said safety member to move in the gun body, said inner plate being connected to said safety member in such a manner that, when in a single shot mode, a nail-striking operation results in removal of said inner plate from said safety member, and when in a continuous shooting mode, the nail-striking operation does not result in removal of said inner plate from said safety member; a first electrical control unit adapted to be disposed in the gun body, said first electrical control unit being contactable with both of said trigger and said safety member, and outputting a first electrical control signal for driving electrically said kinetic power unit upon being contacted by one of said trigger and said safety member, whichever is first operated; and a second electrical control unit adapted to be disposed in the gun body, said second electrical control unit being contactable with said inner plate so as to output a second electrical control signal for driving electrically said transmission unit; wherein said first electrical control unit includes a contact switch and a touch member movable relative to said contact switch and having a contact portion, and two protrusions contactable respectively with and movable by said safety member and said trigger to allow said contact portion to move into contact with said contact switch to output the first electrical control signal; wherein, in the single shot mode, (i) said inner plate is set in a lower point position relative to said trigger, (ii) the safety member is pressed against the article to contact said first electrical control unit so as to generate the first electrical control signal for driving electrically said kinetic power unit, and (iii) said trigger is depressed to move said inner plate to contact said second electrical control unit so as to generate the second electrical control signal for driving electrically said transmission unit; and wherein, in the continuous shooting mode, (i) said inner plate is set in a high point position relative to said trigger, (ii) said trigger is depressed to contact said first electrical control unit so as to generate the first electrical control signal for driving electrically said kinetic power unit, and (iii) the safety member is pressed against the article to move said inner plate to contact said second electrical control unit so as to generate the second electrical control signal for driving electrically said transmission unit.