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    • 6. 发明公开
    • BOHRHAMMER
    • EP1924406A2
    • 2008-05-28
    • EP06792548.7
    • 2006-07-24
    • ROBERT BOSCH GMBH
    • DUESSELBERG, AchimULLRICH, AndreSIEBER, KurtBRINKMANN, Thomas
    • B25D16/00
    • B25D16/006B25D2211/061B25D2216/0015B25D2216/0023B25D2216/0038
    • Disclosed is a drill hammer (10) comprising a half shell-type housing (12) that accommodates the parts mentioned below, a motor (16) with an on-off switch (18) and a motor shaft (22) with a motor pinion (24), a gear mechanism (26) with an intermediate shaft (28), a driving gear (30), an entrained gear (32) with a shifting sleeve (34), and an output gear (35), an impact mechanism (36) with a swashplate (40), an eccentric gear (38) with an eccentric finger (42), and an impact element (44), as well as an output shaft (46) with a driving gear (48) and a drill chuck (50). The motor (16) meshes with the driving gear (30) of the intermediate shaft (28) via the motor pinion (24) thereof. The rotary movement of the motor (16) can be alternatively adjusted to an exclusively rotary movement, an exclusive lifting movement, or a rotary lifting movement of the output shaft (46) by means of the gear mechanism (26) by displacing the shifting sleeve (34) with the aid of shifting means (52). In order to be able to produce said drill hammer (10) at low cost while making the same operate at great efficiency, the intermediate shaft (28) is embodied as a simple, preferably smooth, cylindrical part on which the driving gear (30), the entrained gear (32), which is made especially of sintered metal, and the antifriction bearing (45) sit in a torsion-proof manner, particularly being pressed thereupon, and are used as an axial securing element for the eccentric gear (38) freewheeling on the intermediate shaft (28) and the output gear (35).
    • 本发明公开了一种钻锤(10),其包括容纳下述部件的半壳式外壳(12),带有开关(18)的电动机(16)和带有电动机小齿轮 (24),具有中间轴(28)的齿轮机构(26),驱动齿轮(30),带有换档套筒(34)的夹带齿轮(32)以及输出齿轮(35),冲击机构 (40),具有偏心指(42)的偏心齿轮(38)和冲击元件(44)的输出轴(36)以及具有驱动齿轮(48)和输出轴 钻夹头(50)。 电动机16经由电动机小齿轮24与中间轴28的驱动齿轮30啮合。 马达(16)的旋转运动可以替代地通过使齿轮机构(26)移动移动套筒(26)来调节为仅仅旋转运动,独占提升运动或输出轴(46)的旋转升降运动 (34)借助于移位装置(52)移动。 为了能够以低成本生产所述钻锤(10),同时使其高效率地工作,中间轴(28)构造为简单的,优选平滑的圆柱形部件,驱动齿轮(30) ,特别由烧结金属制成的夹带齿轮(32)和抗磨轴承(45)抗扭地安置,尤其是在其上被压紧,并用作偏心齿轮(38)的轴向固定元件 )在中间轴(28)和输出齿轮(35)上空转。