A nail-driving device has a housing, a trigger unit, a safety unit, a connecting unit and a magazine. The safety unit has first and second safety members in the housing. The connecting unit is connected pivotally to the second safety member, and has a retaining portion disposed movably between the f
A nail-driving device has a housing, a trigger unit, a safety unit, a connecting unit and a magazine. The safety unit has first and second safety members in the housing. The connecting unit is connected pivotally to the second safety member, and has a retaining portion disposed movably between the first and second safety members. The magazine has a pusher for pushing nails therein. When the retaining portion is in a retaining position, a force is applicable to the first safety member to move the second safety member to pivot a trigger arm for a nail-driving operation when the trigger unit is actuated. When the nails thereof are exhausted, the pusher moves to a retention releasing position to pivot the connecting unit and remove the retaining portion from the retaining position to allow for relative movement of the first and second safety members to prevent the nail-driving operation.
대표청구항▼
We claim: 1. A nail-driving device comprising: a housing; a trigger unit; a safety unit including first and second safety members that are disposed movably in said housing; a connecting unit in said housing, and connected pivotally to said second safety member, and including a retaining portion dis
We claim: 1. A nail-driving device comprising: a housing; a trigger unit; a safety unit including first and second safety members that are disposed movably in said housing; a connecting unit in said housing, and connected pivotally to said second safety member, and including a retaining portion disposed movably between said first and second safety members and when said retaining portion being in a retaining position whereat synchronous movement of said first and second safety members is allowed and whereat a force is applicable to said first safety member to move said second safety member so as to allow for a nail-driving operation when said trigger unit is actuated; and a magazine connected to said housing and including a pusher adapted to push and move nails in said magazine, wherein when said nails of said magazine are exhausted, said pusher moves to a retention releasing position whereat said connecting unit is pivoted to remove said retaining portion of said connecting unit from said retaining position to thereby allow for relative movement of said first and second safety members so that the nail-driving operation is prevented. 2. The nail-driving device as claimed in claim 1, wherein said housing includes a nail ejection seat adapted to permit the nails to be shot from said nail-driving device therethrough, the first safety member of the safety unit having a workpiece-engaging end that projects from said nail ejection seat of said housing and that is adapted to press against a workpiece such that said first safety member is moved toward said trigger unit. 3. The nail-driving device as claimed in claim 1, wherein said connecting unit further includes a connecting member, a first pivot member, and a second pivot member, said connecting member being formed with a slot and having a slide section and a stop section that is perpendicular to said slide section, that has an end connected to an end of said slide sections, and that constitutes said retaining portion of said connecting unit, said first pivot member extending through said connecting member and said second safety member, said second pivot member extending through said connecting member and said first safety member, said first pivot member engaging the stop section of the slot in the connecting member so as to prevent relative movement of said first and second safety members when said stop section is disposed in said retaining position. 4. The nail-driving device as claimed in claim 3, wherein said pusher of said magazine is formed with a projection that pushes and pivots said connecting member so as to engage said slide section of said slot in said connecting member with said first pivot member, thereby allowing for relative movement of said first and second safety members when said pusher is moved to said retention release position. 5. The nail-driving device as claimed in claim 1, wherein said safety unit further includes a pivot member, said second safety member having a slide slot extending along a nail-driving direction, said pivot member extending through said slide slot in said second safety member; and said connecting unit further includes a connecting member connected pivotally to said second safety member and having a hook portion that constitutes said retaining portion and that engages a portion of said first safety member so as to prevent relative movement of said first and second safety members when said hook portion of said connecting member is disposed in said retaining position, said hook portion of said connecting member being removed from said portion of said first safety member when said pusher of said magazine is disposed in said retention release position. 6. The nail-driving device as claimed in claim 5, wherein said connecting unit further includes a spring disposed between said connecting member and said second safety member for biasing said hook portion of said connecting member to engage said portion of said first safety member. 7. The nail-driving device as claimed in claim 1, wherein said second safety member is slidable on said first safety member, said connecting unit further including a connecting member connected pivotally to said second safety member and having a first end and a second end opposite to said first end and constituting said retaining portion, and a spring member disposed between said first safety member and said first end of said connecting member for biasing said second end of said connecting member to contact said first safety member so as to prevent relative movement of said first and second safety member. 8. The nail-driving device as claimed in claim 7, wherein said pusher of said magazine is formed with a projection movable to contact and pivot said first end of said connecting member against biasing action of said spring member so as to remove said second end of said connecting member from said first safety member. 9. The nail-driving device as claimed in claim 7, wherein said spring member is configured as a coiled compression spring for biasing said first end of said connecting member to move away from said first safety member. 10. The nail-driving device as claimed in claim 1, wherein said trigger unit includes a trigger arm disposed pivotally on said housing and having a free end, said second safety member being biased to contact said free end of said trigger arm such that movement of said second safety member results in pivoting movement of said trigger arm relative to said housing when the force is applied to said first safety member.
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이 특허에 인용된 특허 (11)
Geist Bernard W. (Melrose Park IL) Frank Edmund (Chicago IL) Doyle Richard H. (Mount Prospect IL) Novak Raymond F. (Itasca IL), Fastener driving tool.
Singer Edward H. ; Moorman Charles J. ; Hirt Peter, Fastener driving tool for locating a pre-existing hole in a first workpiece and driving a fastener therethrough into a.
Jalbert, David B; Hewitt, Charles W; Fang, Zheng, Integrated check pawl, last nail-retaining, and dry fire lock-out mechanism for fastener-driving tool.
Ho Roman,TWX ; Chen Jack,TWX ; Chiang Hsuam-Chi,TWX, Safety device for preventing ejecting mechanism from hitting pushing member in a magazine of a power stapler.
Wyler, Andrew R.; Armstrong, Nathan T.; Thurner, Jason D.; Thorson, Troy C.; Scott, John S.; Ebner, Jeremy R.; Garces, Daniel R.; Dedrickson, Ryan Allen; Skinner, Luke J.; Suhr, Benjamin R., Gas spring-powered fastener driver.
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