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    • 49. 发明授权
    • Barrel unit with a removable cover plate for a nail driving gun
    • 桶装有可拆卸盖板,用于钉枪
    • US5642849A
    • 1997-07-01
    • US566246
    • 1995-12-01
    • Robert Chen
    • Robert Chen
    • B25C5/16B25C1/04
    • B25C5/1665
    • A barrel unit for a nail driving gun includes an elongated base plate and an elongated cover plate. The base plate has a top side formed with a longitudinal discharge groove, a pair of upwardly extending positioning lugs at a rear portion of the base plate, and a pair of upwardly extending hooking lugs at a front portion of the base plate. Each of the positioning lugs has a rearwardly inclining rear end surface. The cover plate is formed with a pair of first slots and a pair of second slots which permit extension of a respective one of the positioning lugs and the hooking lugs therethrough. Each of the first slots has a rearwardly inclining end wall surface which abuts against the rear end surface of the respective one of the positioning lugs when the cover plate is superimposed on the base plate. The cover plate further has an operating lever which is mounted pivotally thereon, and a U-shaped fastener which has two ends connected pivotally to the operating lever and which is pivotable so as to engage the hooking lugs on the base plate when the cover plate is superimposed on the latter. The operating lever is pivotable so as to pull the fastener to engage tightly the hooking lugs.
    • 用于钉枪的枪管单元包括细长基板和细长盖板。 基板具有形成有纵向排出槽的顶面,位于基板后部的一对向上延伸的定位凸耳和位于基板前部的一对向上延伸的钩形凸耳。 每个定位凸耳具有向后倾斜的后端表面。 盖板形成有一对第一槽和一对第二槽,其允许相应的一个定位凸耳和钩形凸耳从其中延伸穿过。 当盖板重叠在基板上时,每个第一槽具有向后倾斜的端壁表面,该端壁表面抵靠相应的一个定位凸耳的后端表面。 盖板还具有可枢转地安装的操作杆,以及U形紧固件,其具有两个端部,枢转地连接到操作杆,并且可旋转地与盖板上的钩接头接合,当盖板为 叠加在后者上。 操作杆是可枢转的,以便拉紧紧固件以紧紧地接合钩挂耳。