CN1095237C - Hand electric tool - Google Patents

Hand electric tool Download PDF

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Publication number
CN1095237C
CN1095237C CN 99102581 CN99102581A CN1095237C CN 1095237 C CN1095237 C CN 1095237C CN 99102581 CN99102581 CN 99102581 CN 99102581 A CN99102581 A CN 99102581A CN 1095237 C CN1095237 C CN 1095237C
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CN
China
Prior art keywords
clutch
ring
tool
power tool
machine
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CN 99102581
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Chinese (zh)
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CN1227987A (en
Inventor
C·格伯
T·迈尔
S·克勒
O·蔡特
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星蒂拉公开股份有限公司
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Priority to DE1998109135 priority Critical patent/DE19809135A1/en
Application filed by 星蒂拉公开股份有限公司 filed Critical 星蒂拉公开股份有限公司
Publication of CN1227987A publication Critical patent/CN1227987A/en
Application granted granted Critical
Publication of CN1095237C publication Critical patent/CN1095237C/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/141Mechanical overload release couplings

Abstract

手持式电动工具机具有一根电动机传动的工具轴(12)和一个在电动机和刀具轴之间的传动链中设置的转矩离合器以及一个用来调节转矩离合器的不同转矩等级的手工调节组件(14),为了从一种机器到另一种机器改变调节组件(14)而不改变所需的传动装置,该调节组件(14)分成一个执行调节功能的可绕机器轴旋转的控制环(23)和一个与该控制环抗扭连接的手工旋转操作的结构环。 (12) and a torque clutch disposed in the drive train between the motor and tool shaft as well as different levels of torque for regulating the torque of the clutch shaft hand-held power tool having a tool drive motor manual adjustment assembly (14), from one machine to another machine to change the adjustment assembly (14) without changing the transmission required, the adjustment assembly (14) performs a regulating function into a rotatable control ring about the machine axis (23) and a hand ring structure is connected to the rotational operation of the control ring torsion.

Description

手持式电动工具机 Hand-held power tool

本发明涉及一种手持式电动工具机。 The present invention relates to a hand-held power tool.

在一种设计成冲击钻孔机的已知的手持式电动工具机(DE 42 13291 A1)中,转矩离合器作为一种带有盘形弹簧的滑动离合器设计的保护性离合器,以便在钻孔过程中刀具锁紧时对机器和使用者进行保护。 In one design known as a hand-held power tool percussion drilling machine (DE 42 13291 A1), the slip clutch torque of the clutch as one kind of the disk spring is designed with a protective clutch to borehole the machine and the user protection process tool when locking. 不同工作状态调节用的调节组件可实现换档和从冲击钻运行转换为锤子或凿子运行。 Different working conditions can be adjusted by the adjustment assembly, and to achieve a shift from operating the hammer drill or chisel hammer converted to run.

众所周知的所谓蓄电池电动螺丝板手是借助于调节组件调节到最大容许的转矩来拧紧螺丝的,转矩调节可进行分级,并通过调节组件的转换可调节到多个调节位置。 The so-called well-known battery electric wrench by means of a screw adjustment assembly is adjusted to the maximum permissible torque for tightening the screws, the torque adjustment may be graded, and can be adjusted to adjust a plurality of positions by adjusting the conversion assembly.

本发明手持式电动工具机的优点是,由于将调节组件分成一个执行传动调节功能的控制环和一个手工操作的结构环可改变从一种机器到另一种机器的调节组件的外观,不需要改变调节所需的传动装置。 Advantage of hand-held power tool of the present invention, since the adjustment assembly into a structural loop control loop performs the function of regulating the transmission and a manually operated machine may change from one appearance to another machine adjustment assembly does not require changing the adjustment gearing required. 控制环属于传动装置,并由这里提出的要求决定,而且满足对全部传动类型都是相同的全部功能。 Transmission means belonging to the control loop, is determined by the requirements set forth herein, but satisfy all transmission types are the same for all the functions. 结构环承担全部变化的功能,不由传动装置决定,并可在任何时候装上和更换。 Ring assumes the function of all the structural changes, determined not by the transmission, and replacement can be installed at any time. 其外观可由一种机器到另一种机器有所改变,同样调节位置的数目及其相对于结构环的旋转角度的位置也可改变。 A machine appearance can be changed to another machine, and adjusting the number of positions in the same position relative to the rotational angle of the ring structure may also be varied. 不用结构环,调节传动装置也具有完全的功能作用,这时只有转矩调节是无级的。 No ring structure, the adjusting mechanism is also fully functional role, then only the torque adjustment is stepless.

根据本发明的一种优选结构型式,在转矩离合器中装有一个锁紧离合器,该锁紧离合器在转矩离合器的离合器零件之间在旋转方向内建立一种由外形连接构成的牢固连接。 According to a preferred version of the invention configuration, the locking torque of the clutch is installed in a clutch, the lock clutch to establish a secure connection constituted by a connection profile in a rotational direction between a clutch torque of the clutch parts. 该锁紧离合器借助于调节元件而可啮合和脱开,而为此所需的控制功能则由一个控制环执行。 The locking elements can be adjusted by means of the clutch engagement and disengagement, and control functions required for this purpose by a control loop execution.

根据本发明的一种有利的结构型式,设置了一个冲击装置来轴向驱动刀具轴或轴向驱动一个由刀具轴驱动的刀具。 According to an advantageous version of the structure of the present invention is provided a driving tool shaft driven by a percussion device to the tool axial drive shaft or the tool axially. 该冲击装置借助于一个调节组件而可啮合和脱开,而为此所需的控制功能则由控制环执行。 The impact device by means of an adjustment assembly can be engaged and disengaged, the control functions required for this executed by the control loop.

手持式电动工具机的这些结构特点具有这样的优点,即用该控制环除了可进行转矩离合器的调节功能外,还可进行手持式电动工具机的一定工作状态的接通和脱开的其他控制功能,例如在一种可作为螺丝板手和钻孔工具的组合式手持式电动工具机中的“冲击钻孔”和“钻孔”的工作状态,在这两种工作状态中,转矩离合器都不起作用,而是装在转矩离合器中的锁紧离合器接通。 These structural features of the hand-held power tool has the advantage that a control loop may be adjusted in addition to the function of the torque of the clutch, but also for a certain operation state of ON hand-held power tool and disengagement of the other control functions, for example in a combined hand-held power tool as a screw wrench a drilling tool and in the "percussion drilling" and "drilling" operating state, both in the operating state, the torque clutch does not work, but is installed in the locking clutch torque of the clutch is turned on. 该锁紧离合器避免在钻孔操作中由离合器传递可导致变速箱外壳产生很大荷载的轴向力,并使转矩离合器的离合器弹簧卸载,所以转矩离合器可达到一个显著长的寿命;根据本发明的一种有利结构型式,结构环设计成罩形,并可扣合到控制环上。 The locking clutch avoid drilling operation is transmitted by the clutch may cause a great gearbox housing produce an axial force load, unload and clutch torque of the clutch spring, the clutch torque can be achieved a significantly long service life; The An advantageous structure type according to the present invention, the structure is designed to cover a ring shape, and may be snapped onto the control loop. 其中,在结构环内设定有定位位置,这些位置与执行调节功能和控制功能的控制环的调节位置相对应。 Wherein the ring structure is set in the positioning position, the adjustment position of the control loop performs the position adjustment and control functions correspond. 从而可在任何时候安装结构环,而不需要附加的工具和附加的定位装置,并可进行事后更换。 Ring structure so as to be mounted at any time, without the need for additional tools and an additional positioning means, and can be afterwards replaced. 通过设定不同定位位置可用相同的调节传动实现转矩调节的不同级数、级到级的不同调节角度以及最终位置角度。 Different by setting different localization position adjusting mechanism can be used to achieve the same torque adjusting the number of stages to a stage different stages and a final angular position of the angle adjustment.

下面结合附图所示的一个实施例来详细说明本发明。 An embodiment shown in the drawings embodiments of the present invention will be described in detail below in conjunction. 其中:图1表示一种手持式电动工具机的部分纵截面;图2表示图1部分剖开的手持式电动工具机的一个调节组件的透视图;图3表示图2调节组件的一个结构环的两个不同的透视图;图4表示图2调节组件的一个定位弹簧的透视图;图5表示图2调节组件的一个盖的两个不同的透视图;图6表示图1部分剖开的手持式电动工具机的一个离合器的透视图;图7表示带有图2调节组件的零件的图6离合器的零件分解图;图8表示图6离合器的一个离合器零件的透视图;图9表示图6离合器的另一个离合器零件的两个不同的透视图;图10表示带有图2调节组件的零件时图6离合器的部分剖开的透视图;图11表示图10离合器的一个锁紧锲块的两个不同的透视图;图12表示带有刀具轴、枢轴承和钻孔/冲击钻孔转换用的转换装置的一种手持式电动工具机的部分剖开的透视图;图13表示图12钻 Wherein: Figure 1 shows a longitudinal section in a hand-held power tool; FIG. 2 is a partially sectioned view showing the hand-held power tool assembly adjusting a perspective view; Fig. 3 shows a structural component of the second adjustment ring the two different perspective views; FIG. 4 shows the adjustment assembly 2 is a perspective view of a positioning spring; different 5 shows a perspective view of an adjustment assembly 2 two cover; Figure 6 shows a partly broken away in FIG. a perspective view of a clutch of the hand-held power tool; FIG. 7 shows a view of a part of the adjustment assembly of FIG. 2 exploded view of the clutch 6; a perspective view of a clutch part of FIG 8 shows the clutch 6; FIG. 9 shows FIG. two different perspective views of another clutch part of the clutch 6; FIG. 10 shows a perspective view of a cutaway portion of Figure 2 with part adjustment assembly 6 of FIG clutch; a locking wedge block 10 of FIG. 11 shows the clutch the two different perspective views; FIG. 12 illustrates a perspective view partly broken away with the tool axis, and the pivot bearing bore / impact a drilled conversion apparatus for converting hand-held power tool; FIG. 13 shows FIG. 12 drill /冲击钻孔转换装置的零件分解图; / Impact drilling parts exploded view converting means;

图14表示在冲击钻孔工作状态时刀具轴和冲击装置的零件分解图;图1中以纵截面示出的部分手持式电动工具机可作为钻孔机、冲击钻孔机和具有可调节转矩的电动螺丝扳手使用。 Figure 14 shows the hammer-drilling tool shaft parts and the operating state of the percussion device exploded view; FIG. 1 is a longitudinal section in hand-held power tool as shown in cross-section drill, impact drilling machine and having an adjustable rotation electric screw wrench moment of use. 在用10表示的机壳中装有一台图中未示出的电动机,该电动机通过一个传动装置11传动一根支承在主轴轴承36中的刀具轴12。 FIG fitted with a motor (not shown) indicated at 10 in a cabinet, the drive motor through a gear 11 supporting a spindle shaft 12 of the tool bearing 36. 该刀具轴12一端带有螺纹轴颈121,在该轴颈上拧紧一个卡盘,该卡盘用来卡紧钻头、冲击钻头或不同的螺旋刀具。 The end of tool shaft 12 with the threaded neck 121, tightening a chuck onto the spindle, the chuck for chucking drill, a percussion drill bit or different spiral tool. 在电动机和刀具轴12之间的传动链内设置了一个转矩离合器13,该离合器可传递的最大转矩借助于一个手动的调节组件14可预先选定几个级。 A torque clutch disposed in a drive chain between the motor 12 and the tool shaft 13, the clutch torque can be transmitted by means of a maximum adjustment assembly 14 may be manually pre-selected several stages. 此外,该调节元件还具有用来调节工作状态“冲击钻孔”和工作状态“钻孔”的另外两个调节位置。 In addition, the adjusting member also has a further two adjustment positions for adjusting the operating state of "percussion drilling" and the operation state "drilling" of. 在这两种工作状态中,离合器13刚性啮合,即作为转矩离合器不起作用,而是作为锁紧离合器工作。 In these two operating states, positive engagement of the clutch 13, i.e., does not work as the torque of the clutch, but as a locking clutch operation.

离合器13具有一个离合器壳15(图1、2、6、7、10、12),在壳上抗扭地并可轴向移动地固定一个环形的第一离合器元件16(图9)。 A clutch 13 having a clutch housing 15 (FIG. 1,2,6,7,10,12), rotationally fixed to the shell and axially movably secured a first annular clutch member 16 (FIG. 9). 第一离合器零件16与一个在传动装置11的行星齿轮的内齿轮17上构成的第二离合器零件18啮合,其中第一离合器零件16上的弧形离合器凸块161位于第二离合器零件18的倾斜的离合器凸块181之间。 A second clutch part with a first clutch part 16 is formed on the planetary gear 17 of the gear 11 meshes 18, wherein the arcuate projection 161 on the clutch a first clutch part of the clutch 16 is in the second inclined part 18 a clutch 181 between the projections. 此外,第二离合器零件18还带有离合器凸块182,这些离合器凸块182比离合器凸块181径向向外布置得远一些,并与它们大致径向成一条直线。 Further, the second clutch part with a clutch 18 further protrusion 182, the clutches 182 bumps arranged farther outward than the number of clutch protrusion 181 radially, and they are substantially radially in line. 离合器零件16也带有离合器凸块162,它们凸出于第一离合器零件16背离第二离合器零件18的一侧上,并将第一离合器零件16抗扭地锚定在离合器壳15上。 The clutch part 16 also carries a clutch projections 162, which project to the first clutch part 16 on the side facing away from the second clutch part 18, and a first clutch rotationally fixed part 16 anchored on the clutch housing 15. 该离合器壳15带有外螺纹151(图7),在该外螺纹上下可拧紧一个调节螺母19。 The clutch housing 15 has an external thread 151 (FIG. 7), the external thread can be screwed a vertical adjusting nut 19. 在调节螺母19和第一离合器零件16之间支承一个离合器弹簧20,该弹簧通过力连接将离合器凸块161和181啮合到两个离合器零件16和18上。 A clutch spring 20 is supported between the adjustment nut 19 and the first clutch part 16, by the spring force of the clutch connection bumps 161 and 181 engage two clutch parts 16 and 18. 调节螺母19通过旋转在外螺纹151上沿第一离合器零件16的方向移动得越远,离合器弹簧20的预应力越大,而且通过转矩离合器13传递到刀具轴12上的最大转矩也越大。 Adjusting nut 19 is moved farther along the direction 16 of the first rotary clutch part on the external thread 151, the larger prestressing the spring clutch 20, the torque transmitted through the clutch 13 and the tool shaft 12 to a maximum torque greater . 只要在刀具上不超过调节的转矩,内齿轮17就被锁定,而且支承在行星齿轮托架22上的行星齿轮21在内齿轮17的内齿171上滚动。 Do not exceed an adjustable torque on the tool, the internal gear 17 is locked, and the support bracket on the planetary gear 22 of the planetary gear 21 rolls on the inner gear 17 of the internal teeth 171. 由此旋转的行星齿轮托架22传动刀具轴12。 Whereby rotation of planet gear carrier 22 tool drive shaft 12. 如果作用在刀具轴12上的反作用力矩超过由离合器弹簧20调节的转矩,则离合器凸块161和181相互在两个离合器零件16和18旁边旋转。 If the reaction torque acting on the shaft 12 exceeds the tool, the clutch 161 and the bump 181 is rotated by a mutual adjusting clutch spring 20 in the two torque clutch parts 16 and 18 next. 这样传动装置11的内齿轮17不再锁紧,所以行星齿轮21在传动装置11中不再支承在内齿轮17的内螺纹171上,从而不再有转矩通过行星齿轮托架22传递到刀具轴12上。 Such internal gear 17 of the transmission 11 is no longer locked, so that the planetary gear 21 in the transmission 11 is no longer supported by internal threads 171 on the inner gear 17, so that torque is no longer transmitted to the tool 22 through the planet gear carrier 12 on the shaft.

如图1和2所示,调节组件14具有一个换档齿套23(图7)、一个搭接在该换档齿套23上的罩形结构环24(图3)和一个扣在离合器壳15的端面上的盖25(图5),该盖用作换档齿套23的导向和结构环24的轴向的旋转定位。 1 and 2, the adjustment assembly 14 having a gear shift sleeve 23 (FIG. 7), one tab on the shift gear sleeve 23 cover ring-shaped structure 24 (FIG. 3) and a clutch housing buckle cover 25 (FIG. 5) of the end face 15 of the lid serves as a shift gear sleeve guide structure 23 and the rotary ring 24 of the axial positioning. 盖25固定用的卡紧钩子在图5和图2中用251表示,而结构环24安装用的卡紧钩子则用252表示。 Clamping the cover 25 for fixing the hook in FIG. 5 and FIG. 2 by showing 251, and the structure of the mounting ring 24 is represented by chucking hook 252. 从图2可看出,卡紧钩子251卡住离合器壳15上的后面的相应凸起部152,而卡紧钩子252则卡入结构环24上的一个环形槽245中。 As can be seen from Figure 2, the chucking hook 251 caught behind respective projections 15 on the clutch housing 152, the clamping hook 252 snaps into an annular groove on the ring structure 24, 245. 在盖25上进行导向运动的换挡齿套23用一个楔块嵌入调节螺母19中,于是在换档齿套23旋转时,调节螺母19一起旋转,并在轴向移动的情况下拧入离合器壳15的外螺纹151中。 For guiding movement of the cover 25 on the shift sleeve teeth 23 with a wedge insert adjusting nut 19, so in the shift gear sleeve 23 rotates, the adjusting nut 19 rotate together, and in the case of screwed axially movable clutch external threads 151 of the housing 15. 换档齿套23和调节螺母19共同构成一个控制环,转矩离合器13的全部调节功能和装在该转矩离合器13中的锁紧离合器的啮合和脱开的控制功能以及一个尚待叙述的、“冲击钻孔”工作状态用的控制机构30的接通和脱开都由该控制环来进行。 Shift gear sleeve 23 and adjusting nut 19 together constitute a control loop, adjusting the torque of the clutch engagement functions and all mounted in the locking torque of the clutch 13 and clutch disengagement control 13 and a yet described, control means "percussion drilling" operation state with the ON and disengagement by the control loop 30 is performed. 在盖25和离合器壳15之间嵌入一个定位弹簧26(图4),防止旋转和移动。 Between the cover 25 and the clutch housing 15 is embedded a positioning spring 26 (FIG. 4) to prevent rotation and movement. 该定位弹簧26具有一个定位头261,该定位头与结构环24中的定位槽241相互作用。 The positioning spring 26 has a locating head 261, the head positioning ring 241 interacts with the structure of the positioning groove 24. 结构环24上的定位槽241的位置和数目决定调节组件14的单个调节位置的定位和数目。 Position and number of structural loops positioned on the groove 24, and 241 determines the number of individual adjustable positioning of adjusting the position of assembly 14. 结构环24扣合在换档齿套23上并与它抗扭连接。 Engaging the ring structure 24 in the shift sleeve teeth 23 and rotationally connected to it. 为此,结构环的内侧上的连接片242(图3B)嵌入换档齿套23的相应的槽231中(图7)。 To this end, the connecting piece on the inside of the ring structure 242 (FIG. 3B) fitted in the corresponding groove 231 of the shift gear sleeve 23 (FIG. 7). 在结构环24的内侧上构成的卡紧元件243嵌入换档齿套23上侧的后面相应构成的凸起部232中(图2),使结构环24轴向不移动地固定在换档齿套23上。 Clamping element is formed on the inner side 24 of the ring structure 243 fitted on the rear side of the gear shift sleeve 23 constituted in the respective boss portion 232 (FIG. 2), that the structural ring 24 does not move axially secured in the shift teeth sleeve 23.

调节组件14的调节位置的顺序是这样规定的:在第一个调节位置内可调节“冲击钻孔”工作状态,在下面的第二个调节位置内可调节“钻孔”工作状态和在其余的例如15个依次排列的调节位置内可调节手工机具用作电动螺丝板手时的转矩离合器13的不同转矩等级。 Sequentially modulating the position of assembly 14 is thus defined: a first adjustment position in adjustable "percussion drilling" operating state, in the second adjustment position can be adjusted following "drilling" operating state and the remaining for example, may be adjusted by hand when the equipment is used as an electric clutch torque wrench screw 13 different torque levels arranged in order within 15 regulating position. 随着结构环24的转动的不断增加,调节位置的数目也不断增加,这时在转矩离合器13中调节的最大传递转矩逐步增加。 With increasing rotation of the ring structure 24, the number of adjustment positions is increasing, then gradually increase in the torque of the clutch 13 in the regulated maximum transmitted torque. 在结构环24的两个前面的调节位置中,转离合器13不起作用,锁紧离合器接通,于是离合器弹簧20在很大程度上卸载。 Adjusting the position of the two foregoing structure ring 24, the transfer clutch 13 does not work, the locking clutch is turned on, thus unloading the clutch spring 20 largely.

为了转矩离合器13的刚性啮合或为了装在转矩离合器13中的锁紧离合器的接通,在离合器壳15的整个圆周上均匀分布设置多个可轴向进行导向运动的锁紧楔块27,它们把抗扭地固定在离合器壳(15)上的离合器零件(16)锁紧在凸块162之间。 For positive engagement torque of the clutch 13 or to the locking means in the clutch torque of the clutch 13 is turned on, a plurality of uniformly distributed axially guided movement of the locking wedge 27 in the entire circumference of the clutch housing 15 are rotationally fixed to the clutch housing (15) of the clutch part (16) between the locking lug 162. 在图10中只看到一个锁紧楔块27,该楔块在图11中用两个不同的视图表示出来。 FIG 10 seen in a locking wedge 27, the wedge 11 with two represented in different views in FIG. 如图10所示,该锁紧楔块27借助于一个在离合器壳15上支承的压缩弹簧28朝一个在轴向内沿圆周方向不断上升的在换档齿套23上构成的环形凸轮槽29施压。 10, the lock wedge 27 by means of a compression spring 28 toward the clutch is supported on the housing 15 in a circumferential direction rising axially within an annular groove formed on the cam gear shift sleeve 2329 pressure. 这样压缩弹簧28压住垂直于锁紧楔块27的移动方向的一个端面271(图11B),并由一根轴颈23支承,而另一端面272则紧贴在凸轮槽29上。 Thus the compression spring 28 presses the moving direction perpendicular to the locking wedge 27 in one end face 271 (FIG. 11B), supported by a journal 23, while the other end surface 272 against the cam groove 29. 锁紧楔块27的两个平行于锁紧楔块27移动方向延伸的纵面274和275设计成贴合面。 Two parallel locking wedges 27 extending in the longitudinal direction of the locking wedge 27 moves surface 274 and surface 275 are designed to fit. 在工作状态“冲击钻孔”和“钻孔”时,在结构环24的前两个调节位置内,换档齿套23具有这样的旋转位置,即凸轮槽29将锁紧楔块27朝压缩弹簧28推入第二离合器零件18上的离合器凸块182之间。 In operation state "percussion drilling" and "drilling", in adjusting the position of the first two structural ring 24, the shift gear sleeve 23 has a rotational position, i.e. the locking cam groove 29 toward the compression wedge 27 between the clutch spring 28 push protrusion 182 on the second clutch part 18. 这样锁紧楔块27的贴合面274、275之一便贴合在罩182的一个沿轴向延伸的面182a或182b上(图8),并在两个离合零件16、18之间建立一个纯粹通过外形连接形成的牢固连接。 Such locking wedge bonding surface 27 on the one surface 274, 275 Sticky 182a or 182b engaged in an axially extending shroud 182 (FIG. 8), and established between two clutch parts 16, 18 a purely secure connection formed by profile connector. 在整个圆周上均匀分布设置多个锁紧楔块27时,每个楔块27都支承在一个单独的凸轮槽29上,而凸轮槽29则以一定径向距离相互同心设置在换档齿套23面向离合器13的端面上。 Uniformly distributed over the entire circumference a plurality of locking wedge 27, the wedge 27 are each supported on a single cam groove 29, the cam 29 places a radial distance from one another concentrically arranged groove in the shift sleeve teeth facing the end face 23 of the clutch 13. 如果结构环24继续旋转超出前两个调节位置时,凸轮槽29退后,而锁紧楔块27则通过压缩弹簧28从第二个离合器零件18中重新退出,这时转矩离合器13产生作用,它传递的最大转矩由离合器弹簧20的预应力决定。 If the structural ring 24 is further rotated beyond the front two adjustment positions, the cam groove 29 back, and the locking wedge 27 again exits from the second clutch part 18 by a compression spring 28, when the clutch 13 generates torque effect it is determined by the maximum torque transfer clutch spring 20 is prestressed.

在“冲击钻孔”工作状态时,刀具轴12除其旋转运动外还产生一个具有很小的轴向行程的上升运动。 In the "percussion drilling" operating state, the tool shaft 12 in addition to its rotational motion also generates a small stroke of upward motion has axial. 为此,构成冲击装置30的棘轮具有两个棘轮件31、32(图1和图14),其中,第一棘轮件31与刀具轴12刚性连接,而第二棘轮件32则抗扭地和轴向可移动地固定在离合器壳15中。 For this reason, a shock ratchet device 30 has two ratchet members 31, 32 (FIGS. 1 and 14), wherein the first member 3112 is rigidly connected to the ratchet tool axis, the second ratchet member 32 in a rotationally fixed manner and axially movably secured in the clutch housing 15. 一个压缩弹簧33将第二棘轮件32固定在离合器壳15的一个止挡34上。 A compression spring 33 of the second ratchet member 32 in a fixed stop 34 on the housing 15 of the clutch locking. 在图14零件分解图中看到的冲击装置30的两个棘轮件31、32通过压缩弹簧33和另一个支承在工具轴19和主轴轴承36之间的压簧35用其相互面对的棘轮齿部保持啮合。 Two ratchet members 31, 32 by the spring 33 in compression and the other support shaft 19 and the tool spindle bearing between the spring 36 with the ratchet wheel 35 which face each other seen in the exploded view of FIG. 14 parts of the impact device 30 engagement tooth holding portion. 在旋转时,刀具轴12作用的轴向行程由棘轮齿部的轴向高度来决定。 While rotating, axial stroke acting tool axis 12 is determined by the axial height of the teeth of the ratchet portion. 当结构环24位于它的第一调节位置时,这两个棘轮件31、32通过它们的棘轮齿部相互啮合,于是冲击装置30接通。 When the ring structure 24 is in its first adjustment position, the two ratchet members 31, 32 are engaged with each other by their ratchet teeth, thus the percussion device 30 is turned on. 当结构环24旋转到它的下一个调节位置时,则移动爪37便将刀具轴12推动这样远(图1右方),使两个棘轮件31、32脱开,如图1所示。 When the ring structure 24 is rotated to its next position during an adjustment, the mobile jaw 12 pushes the shaft 37 so that the tool put away (rightward in FIG. 1), the two members 31 and 32 are disengaged from the ratchet, as shown in FIG. 在刀具轴12移动时,第二棘轮件32在压缩弹簧33的弹力作用下贴合到离合器壳15的止挡34上,所以它不可能随刀具轴12的移动和随第一棘轮件31的移动而移动。 When moving the tool shaft 12, the second ratchet member 32 under compression force of spring 33 is attached to the stopper 34 of the clutch housing 15, so it can not move with the tool axis 12 and with the first ratchet member 31 mobile and mobile. 该冲击装置30脱开。 The impact means 30 is disengaged. 刀具轴12产生一个纯粹的旋转运动。 Tool shaft 12 generates a pure rotational movement.

为清晰起见,图1中只将移动爪37作为结构单元示出,该结构单元可从零件分解图13中看出。 For clarity, FIG. 1 in the mobile jaw 37 is shown as a structural unit, the structural unit is an exploded view seen from the part 13. 它包括一个轴承环38,主轴轴承36通过外形连接装入该轴承环中,并通过压紧弹簧35压到轴承环底部;还包括一个月牙环39,该月牙环39抗扭地装在离合器壳15上;以及包括一个连接环40,该连接环40用圆周上的弓形段401搭接月牙环39,它们通过外形连接装在换档齿套23中,并在换档齿套23和连接环40之间建立一个抗扭的连接。 It comprises a bearing ring 38, a spindle bearing 36 connected to the bearing ring is loaded by a shape, and pressed by the pressing spring 35 to the bottom of the bearing ring; ring 39 further comprises a crescent, the crescent ring 39 rotationally mounted to the clutch housing 15; 40 and comprising a connecting ring, the connecting ring 40 with overlapping arcuate crescent ring segments on the circumference of 40,139, which are connected through a shift gear sleeve mounted on the profile 23, and the shift gear sleeve 23 and the connecting ring establish a connection between the torsion 40. 月牙环39在其面向连接环40的端面上带有两个上升斜面41,这两个上升斜面以一定距离相互布置在圆周方向内。 Crescent ring 39 on its side facing the end face of the connection ring 40 with two inclined surfaces 41 rise, which rise two inclined surfaces arranged at a distance from each other in the circumferential direction. 每个上升斜面41从月牙环39环形面的圆周方向看去逐渐升高并朝环形面方向重新逐渐降低。 Each rising inclined surface 41 and gradually increased again seen gradually decreased toward a direction from the circumferential direction of the annular surface 39 of the annular face crescent ring. 平面贴合在月牙环39的环形面积上的连接环40在每个上升斜面41的范围内带有一个凹槽42,凹槽42的长度大于斜面的长度。 Plane on the coupling ring bonded to the crescent ring 40 of the annular area 39 is provided with a recess 42 in the range of each rising ramp 41, the length of the groove 42 is greater than the length of the bevel. 轴承环38用三个以相同圆周角度相互错开布置的钩爪43钩住离月牙环39的端面的连接环40。 The bearing ring 38 with three circumferentially at the same angle to each other are arranged offset from the end surface of the hook 43 is hooked crescent ring 39 is connected to ring 40. 其中,钩爪43同时将轴承环38抗扭地固定在月牙环39中。 Wherein, while the finger 43 rotationally fixed bearing ring 38 in the ring 39 in the crescent.

图12表示一个组成的移动爪的透视图。 FIG 12 shows a perspective view of a jaw movement thereof. 在图示位置内,上升斜面41在月牙环39上通过凹槽42伸入连接环40中,而连接环40则平面贴合到月牙环39上。 In the illustrated position, the rising sloped surface 41 connecting ring 40 by extending into recess 42 on the crescent ring 39 and the attachment ring 40 attached to the planar crescent ring 39. 如前所述,刀具轴12通过压紧弹簧35沿图1左方推动这样远,使棘轮件31、32相互啮合和第二棘轮件32从止挡34升起。 As described above, the tool 12 by the shaft pressing spring 35 leftward in FIG. 1 so far driven, the ratchet member 31 and the intermeshed second ratchet member 32 from the stopper 34 is raised. 这样,“冲击钻孔”工作状态接通,同时通过换档齿套23的相应旋转位置使锁紧离合器接通。 Thus, "percussion drilling" operating state is turned on, while the lock is turned on by a corresponding rotational position of the clutch teeth of the shift sleeve 23. 当结构环24转到它的第二个调节位置时,连接环40移到上升斜面41上,同时轴承环38通过钩爪43朝压缩弹簧35的弹力产生一个轴向移动。 When the ring structure 24 to its second adjustment position, the connecting ring 40 is moved on the inclined surface 41 to rise, while the bearing ring 38 is moved axially 43 generates a compression force of the spring 35 by finger. 支承在刀具轴12的一个台肩122上(图1)的主轴轴承36推动刀具轴向图1右方移动。 Supported on a shoulder 122 of tool shaft 12 (FIG. 1) is driven tool spindle bearing 36 axially moved rightward in FIG. 1. 由上升斜面41的轴向高度决定的轴向移动距离是这样确定的,使棘轮件31、32脱开,并使第二棘轮件32贴合到止挡34上。 Axial movement by the axial distance of the height of the rising inclined surface 41 is determined such decisions, the ratchet member 31 is disengaged, and the second ratchet member 32 is bonded to the stop 34. “钻孔”工作状态是这样调节的,通过换档齿套23的相应的转动位置使锁紧离合器保持接通。 "Drilling" operating state is adjusted, the locking rotational position by a corresponding clutch teeth of the shift sleeve 23 remains turned on. 当结构环24从这个第二调节位置继续转动到其他的调节位置时,一起转动的调节环40不再可能离开上升斜面41,所以在结构环24的全部其他旋转位置中,冲击装置30都不起作用。 When further rotated from the second position to adjust the position of other structural adjustment ring 24 rotates together with the adjustment ring 40 is no longer possible to leave ramp 41 rises, so the position of all the other rotary ring structures 24, 30 do not impact device kick in. 同时在这个旋转范围内,在换档齿套23上这样构成凸轮槽29,即锁紧楔块27通过它的压缩弹簧28重新退出第二离合器零件18,于是锁紧离合器脱开,转矩离合器13起作用。 Simultaneously within this range of rotation on the shift sleeve teeth 23 configured as a cam groove 29, i.e. the locking wedge 27 by its compression spring 28 again exits the second clutch part 18, thus locking the clutch is disengaged, the clutch torque 13 work.

本发明不限于上述的实施例,例如工作状态“冲击钻孔”、“钻孔”和转矩预选的调节组件14的调节位置的排列顺序不是不可改变的。 The present invention is not limited to the above-described embodiments, such as the working state "percussion drilling", adjust the position of the order of "drilling" and preselected torque adjustment assembly 14 is not immutable. 在移动爪37的适当的别的结构型式的情况下,工作状态“冲击钻孔”和“钻孔”的调节位置可以交换位置。 In the case of other suitable types of mobile jaw structure 37, the operating state "percussion drilling" and "drilling" position of adjustment positions may be exchanged. 这两个调节位置也不必一定要位于转矩预选的调节位置组之前,虽然这对离合器弹簧20的卸载在这两种工作状态中都是有利的。 Before these two positions do not have to adjust the torque preselected adjustment position located in the group, although this unloading of the clutch spring 20 in both operating state is advantageous. 如果忍受一定的离合器弹簧荷载,则例如还可在转矩调节位置组之间插入工作状态“钻孔”和/或“冲击钻孔”的其他调节位置,从而可达到调节组件14的较短的转换行程。 If the clutch spring to endure a certain load, for example, the operating state may be inserted between the torque adjustment position set "drill" and / or "percussion drilling" other adjustment position so as to achieve a shorter adjustment assembly 14 conversion trip.

Claims (16)

1.手持式电动工具机具有一根电动机传动的刀具轴(12)、一个在电动机和刀具轴(12)之间的传动链中设置的用来传递可预定的最大转矩的转矩离合器(13)以及一个在该转矩离合器(13)中不同转矩分级调节用的手动调节组件(14),其特征在于,调节组件(14)具有一个执行调节功能的、可绕机器轴旋转的控制环(19、23)和一个与该控制环抗扭连接的用手工旋转操作的结构环(24);以及装在转矩离合器(13)内的锁紧离合器具有至少一个固定在一个离合器零件(16)内可轴向移动的锁紧楔块(27),该锁紧楔块通过轴向移动这样伸入设置在第二离合器零件(18)上的离合器凸块(182)之间,使沿轴向延伸的贴合面(274、275、182a、182b)相互贴合在锁紧楔块(27)和离合器凸块(182)上;在换档齿套(23)上至少构成一个沿轴向不断上升的并沿圆周方向延伸的凸轮槽(29),至少一个锁紧楔块(27)用一个垂 Tool axis (12) 1. The hand-held power tool having a drive motor, a drive train disposed between the motor and the tool shaft (12) for transmitting torque of the clutch can be predetermined maximum torque ( 13) grade and a different torque adjustment manual adjustment assembly (14) with the torque of the clutch (13), characterized in that the adjustment assembly (14) having a function of performing the adjustment, the machine may be rotatable about the axis of the control rings (19, 23) and manually rotating the operation ring structure is a rotationally connected to the control ring (24); and a locking clutch installed in the torque of the clutch (13) having at least one fixed part a clutch ( axially) movable within a locking wedge 16 (27), between which the locking wedge (182) extending into a clutch so that bumps on the second clutch part (18) by axial movement, so that in axially extending abutment surface (274,275,182a, 182b) bonded to each other in a locking wedge (27) and a clutch projection (182) on; constitute a shift axially at least over the toothed sleeve (23) rising to and extending in the circumferential direction of the cam groove (29), at least one locking wedge (27) with a vertical 直于贴合面(274、275)延伸的端面(272)在弹力作用下支承在该凸轮槽上。 Bonded to a straight face (274, 275) end surface (272) extending in the spring force is supported on the cam groove.
2.按权利要求1的手持式电动工具机,其特征在于:设置了一个冲击装置(30)来轴向传动刀具轴12或轴向传动一个由刀具轴(12)传动的刀具;该冲击装置(30)借助于调节组件(14)而可啮合和脱开;为该冲击装置(30)的接通和脱开的控制功能配置了控制环(19、23)。 2. The handheld power tool as claimed in claim 1 of the machine, wherein: a percussion device is provided (30) to the tool drive shaft 12 axially or axially by cutter drive a drive shaft (12) of the tool; the impact means (30) by means of the adjustment assembly (14) can be engaged and disengaged; for an impact means (30) ON and disengagement control function arranged to control loop (19, 23).
3.按权利要求1项的手持电动工具机,其特征在于,结构环(24)设计成罩形,并可扣合到控制环(19、23)上。 3. electric tool according to claim 1, characterized in that the structural ring (24) is designed as a cap-shaped, and may be snapped onto the control loop (19, 23) on.
4.按权利要求1或3的手持式电动工具机,其特征在于,结构环(24)具有定位位置,这些位置与执行调节功能和控制功能的控制环(19、23)的调节位置相对应。 Adjusting the position according to claim 4. The hand-held power tool 1 or 3, characterized in that the structural ring (24) has a positioning position, which position adjustment is performed with the control loop function and the control function (19, 23) corresponding to .
5.按权利要求4的手持式电动工具机,其特征在于,结构环(24)的定位位置通过在其整个圆周上均匀分布设置的定位槽(241)固定在结构环(24)的内侧上,它们与一个固定的定位弹簧(26)共同作用。 5. The handheld power tool as claimed in claim 4 of the machine, wherein the positioning location of the structural loops (24) on the inside by the uniformly distributed over the entire circumference of the positioning groove is provided (241) fixed to the ring structure (24) , which (26) interacts with a fixed locating spring.
6.按权利要求1的手持式电动工具机,其特征在于:控制环具有一个换档齿套(23)和一个调节螺母(19),它们抗扭地并轴向可相对移动地相互连接;罩形的结构环(24)最好完全夹紧换档齿套(23)并牢固扣合到该换档齿套上。 6. The handheld power tool as claimed in claim 1 of the machine, wherein: a control ring having a shift gear sleeve (23) and an adjusting nut (19) which are rotationally fixed and axially movable relative to each other are connected; cap shaped structure ring (24) is preferably fully clamped shift gear sleeve (23) and firmly engaging the teeth of the shift sleeve.
7.按权利要求6的手持式电协工具机,其特征在于:转矩离合器(13)具有一个离合器壳(15)和两个通过一个离合器弹簧(20)用力啮合在一起的离合器零件(16、18);调节螺母(19)可用螺纹拧到离合器壳(15)上,该离合器弹簧(20)支承在该调节螺母(19)和一个抗扭地并可轴向移动地固定在离合器壳(15)上的离合器零件(16)之间。 Claim 7. The handheld electric power tool RA 6, wherein: (15) and the clutch part (16 through a two engagement force of the clutch spring together (20) torque of the clutch (13) having a clutch housing , 18); adjusting nut (19) can be threaded onto the clutch housing (15), the clutch spring (20) supported on the adjusting nut (19) and a rotationally fixed and axially movably secured in the clutch housing ( clutch part (16) between the upper 15).
8.按权利要求7的手持式电动工具机,其特征在于,在离合器壳(15)上固定一个盖(25),在该盖上,换档齿套(23)可进行导向运动,罩形的结构环(24)可旋转地牢固扣合。 8. The handheld power tool as claimed in claim 7 of the machine, characterized in that the clutch housing (15) fixed to a cover (25), the cover, the shift gear sleeve (23) can be guided movement, a mantle ring structure (24) rotatably engaging firmly.
9.按权利要求8的手持式电动工具机,其特征在于,定位弹簧(26)固定在离合器壳(15)和盖(25)之间,以防止旋转和移动,并用一个定位头(261)插入结构环(24)上的定位槽(241)中。 9. The handheld power tool as claimed in claim 8 of the machine, characterized in that the positioning spring (26) is fixed between the clutch housing (15) and the cover (25), to prevent rotation and movement, and with a positioning head (261) insert structure ring is positioned on the groove (24) (241) of.
10.按权利要求1的手持式电动工具机,其特征在于,在至少一个锁紧楔块(27)的面离该凸轮槽(29)的端面(271)和离合器壳(15)之间支承一个压缩弹簧(28)。 10. A support as claimed in claim between the hand-held power tool 1, characterized in that, from the end surface of the cam groove (29) (271) and a clutch housing (15) at least one locking wedge (27) surface a compression spring (28).
11.按权利要求1或10的手持式电动工具机,其特征在于,在该换档齿套(23)上至少这样构成一个凸轮槽(29),即在结构环(24)的两个前后定位位置之间的换档齿套(23)的一个预定的旋转角度范围内,至少一个楔块(27)在凸轮槽(29)的轴向最高峰的范围内贴合到该凸轮槽上。 11. The handheld power tool as claimed in claim 1 or 10 machine, wherein the at least one cam groove of such configuration (29), i.e., before and after two structural loops (24) in the shift gear sleeve (23) the gear shift sleeve (23) is positioned between the position of a predetermined rotation angle range, at least one wedge (27) in the axial direction of the highest peak in the range of the cam groove (29) is attached to the cam groove.
12.按权利要求1的手持式电动工具机,其特征在于:在转矩离合器(13)的离合器零件(16、18)的整个圆周上最好均匀分布设置多个锁紧楔块(27);每个锁紧楔块(27)贴合在一个单独的凸轮槽(29)上;这些凸轮槽(29)以一定径向距离相互同心地设置在换档齿套(23)面向离合器零件(16、18)的端面上。 12. The handheld power tool as claimed in claim 1 of the machine, wherein: a plurality of preferably uniformly distributed locking wedge (27) over the entire circumference of the torque of the clutch (13) of the clutch part (16, 18) ; each locking wedge (27) bonded on a single cam groove (29); the cam groove (29) at a radial distance from one another concentrically arranged in the shift sleeve teeth (23) facing the clutch part ( 16, 18) of the end face.
13.按权利要求2的手持式电动工具机,其特征在于:冲击装置(30)具有一个与刀具轴(12)刚性连接的第一棘轮件(31)和一个不旋转的并可轴向移动设置的第二棘轮件(32),它们的棘轮齿部通过作用在该棘轮件(31、32)上的弹力相互啮合;换档齿套(23)设计成在一个旋转角度的范围内,它所引起的刀具轴(12)的轴向移动可使两个棘轮件(31、32)脱开。 13. The handheld power tool as claimed in claim 2 of the machine, characterized in that: the impact device (30) having a first ratchet member (31) is rigidly connected to a tool shaft (12) and a non-rotating and axially movable setting a second ratchet member (32), the ratchet teeth are engaged with each other by the elastic force on the ratchet member (31, 32) effect; shift gear sleeve (23) designed to be in the range of a rotation angle, it axial movement of the tool shaft (12) caused to make two ratchet members (31, 32) is disengaged.
14.按权利要求13的手持式电动工具机,其特征在于,支承刀具轴(12)的主轴轴承(36)插入一个轴承环(38)中,该轴承环相对于离合器壳(15)抗扭地并可轴向移动地设置,并在换档齿套(23)的转角范围内产生一个使棘轮件(31、32)脱开的轴向行程,这时一个由一个压缩弹簧(33)加载的轴向移动的棘轮件(32)支承在一个止挡(34)上。 14. The handheld power tool as claimed in claim 13 of the machine, characterized in that the spindle supporting the tool shaft (12) a bearing (36) is inserted into a bearing ring (38), the bearing ring relative to the clutch housing (15) rotationally fixed to and axially movably disposed, and generating a ratchet member (31, 32) in the disengaged axial travel of the shift sleeve teeth (23) of the angle range, when a loaded by a compression spring (33) axial movement of the ratchet member (32) is supported on a stop (34).
15.按权利要求4的手持式电动工具机,其特征在于,主轴轴承(36)通过一个支承在刀具轴(12)上的压紧弹簧(35)用力连接固定在轴承环(38)的底部。 15. The handheld power tool as claimed in claim 4 of the machine, characterized in that the bearing spindle (36) firmly connected to the bottom of the fixed bearing ring (38) in the tool shaft pressing spring (35) (12) via a support .
16.按权利要求15的手持式电动工具机,其特征在于:在该离合器壳(15)上抗扭地装有一个月牙环(39),该月牙环在其将离轴承环(38)的环形面上带有两个以一定距离相互设置在圆周方向内的轴向凸出的上升斜面(41),该上升斜面分别沿圆周方向从环形面开始上升并朝环形面重新下降;在该月牙环(39)的端面上贴合一个与换档齿套(23)抗扭连接的连接环(40),在每个上升斜面(41)的范围内,该连接环都带有一个凹槽(42),该凹槽(42)的长度大于该斜面的长度;该连接环(40)在其背离月牙环(39)的端面上被至少两个以相同圆周角相互设置在轴承环(38)上的钩爪(43)卡住,该钩爪同时把轴承环(38)抗扭地固定在月牙环(39)中。 16. The handheld power tool as claimed in claim 15 of the machine, characterized in that: in the clutch housing (15) in a rotationally fixed manner with a crescent ring (39), in which the crescent ring from the bearing ring (38) an annular face with two axially disposed at a distance from each other in the circumferential direction of the protruding ramp rise (41), respectively, the rising ramp rises from the annular surface and descends again towards the annular surface in the circumferential direction; the crescent rings (39) laminated to an end face of the shift gear sleeve (23) connecting ring (40) rotationally fixed connection, the range of increase in each ramp (41), which are connected with a ring groove ( 42), the length of the groove (42) is greater than the length of the slope; the connecting ring (40) facing away from the end face of the crescent ring (39) is at least two mutually disposed at the same circumferential angle in the bearing ring (38) the finger (43) caught, the finger while the bearing ring (38) rotationally fixed in the crescent ring (39).
CN 99102581 1998-03-04 1999-03-03 Hand electric tool CN1095237C (en)

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CN1095237C true CN1095237C (en) 2002-11-27

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CH693405A5 (en) 2003-07-31
DE19809135A1 (en) 1999-09-09
GB2334911A (en) 1999-09-08
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JPH11309677A (en) 1999-11-09
GB9904278D0 (en) 1999-04-21
CN1227987A (en) 1999-09-08

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