CN101758270B - electrical tools - Google Patents

electrical tools Download PDF

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Publication number
CN101758270B
CN101758270B CN 200910006652 CN200910006652A CN101758270B CN 101758270 B CN101758270 B CN 101758270B CN 200910006652 CN200910006652 CN 200910006652 CN 200910006652 A CN200910006652 A CN 200910006652A CN 101758270 B CN101758270 B CN 101758270B
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ring
provided
housing
output shaft
impact
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CN 200910006652
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Chinese (zh)
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CN101758270A (en )
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张士松
顾育明
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苏州宝时得电动工具有限公司
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Abstract

本发明公开了一种电动工具,包括机壳,收容在所述机壳中的电机,由所述电机驱动旋转的输出轴以及连接所述输出轴与刀具的夹头,所述机壳上设置有可轴向运动而周向不能转动的冲击环,可转动的带内齿圈的圆环以及带大小齿轮的减速轴,所述减速轴与所述电机输出轴轴向平行设置,所述电机输出轴套接有可轴向移动地与所述夹头脱离或连接的导套,所述导套上设置有外齿圈与所述减速轴大齿轮啮合,所述减速轴小齿轮与所述圆环的内齿圈啮合,所述冲击环和所述圆环相对端面分别设置有可冲击的冲击齿,所述冲击环与所述机壳之间设置有弹簧,所述弹簧的一端与所述机壳连接,另一端与所述冲击环连接。 The present invention discloses an electric power tool, comprising a housing, a motor housed in the housing in the output shaft is driven to rotate by the motor and connected to the output shaft and the tool chuck is provided on the housing there may not be axially rotatable circumferential movement of the impact ring, with the ring gear of the reduction shaft and rotatable with the size of the gears, the reduction shaft and the motor output shaft disposed in parallel, said motor the output hub connected with axially movable out of engagement with the collet or guide sleeve is connected, the guide sleeve is provided with an external ring gear meshing with the large gear of the reduction shaft, the pinion gear and the reduction shaft the ring gear of the ring, said ring and said impact ring opposite end surfaces are respectively provided with a shock impulse tooth, the impingement ring disposed between the housing and the spring, the one end of the spring said housing and the other end connected to said impact ring. 本发明电动工具能方便快捷地对刀具进行拆装。 Power tool of the present invention can be quickly and easily attached to and detached to the tool.

Description

电动工具 electrical tools

技术领域 FIELD

[0001] 本发明涉及一种电动工具,特别是一种带旋转刀具的电动工具。 [0001] The present invention relates to a power tool, in particular a power tool with a rotating tool.

[0002] 背景技术 [0002] BACKGROUND OF THE INVENTION

[0003] 电木铣、电钻等电动工具通常是由电机驱动输出轴旋转从而带动刀具旋转进行切削,钻孔等工作,但是在长期的使用过程中刀具很容易磨损而需要更换刀具,并且在操作过程中也经常需要更换各种不同规格的刀具,但是使用扳手或类似功能的工具拆装刀具的过程既费力又耗时,同时又存在扳手等工具容易丢失等问题。 [0003] Bakelite milling, drills and other rotary power tool is typically driven by a motor output shaft so as to drive rotation of the tool cutting, drilling, etc., but long-term use in the tool wear is easy to replace the tool, and in operation process also often need to replace a variety of different specifications of the tool, but use a wrench or similar tool disassembly tool function is laborious and time-consuming process, and that there is likely to be lost wrenches and other tools and other issues. 英国专利GB 2351461A揭示了一种电木铣在输出轴和夹头上均设置锥齿轮,通过一设置在机壳上的锥齿轮与输出轴和夹头上的锥齿轮同时啮合,手动旋转机壳上锥齿轮使得输出轴和夹头上的锥齿轮向相反方向旋转,从而将夹头从输出轴上松开,对刀具进行更换的结构,这种拆装刀具的结构虽然解决了工具丢失的问题,但是需要操作者一直旋转机壳上锥齿轮直至夹头松开,既费力又耗时。 British Patent GB 2351461A discloses a bakelite mill chuck and the output shaft bevel gears are provided, and the bevel gear while meshing chuck disposed on the housing by a bevel gear and the output shaft manually rotating the housing bevel gear and the output shaft of the bevel gear chuck rotate in the opposite direction, so as to release the collet from the output shaft, the tool replacement structure, the structure of this tool is detachably solves the problem of lost tools on, but the need to operate has been rotated until chuck release bevel gear housing, laborious and time-consuming. 而中国专利CN 2376354Y揭示了一种枪钻的冲击自锁式夹头结构,可以通过枪钻的电机旋转打击夹头,使夹头对刀具自动锁紧,然而,这种结构需要操作者在枪钻旋转打击夹头的时候,握住夹头罩壳不跟转,十分的费力,而且这种冲击自锁式夹头结构只适宜转速较低的电动工具,使用范围也十分有限。 The Chinese patent CN 2376354Y discloses an impact drill gun chuck self-locking structure can be rotated through a blow gun drill chuck motor, so that the tool chuck automatic locking, however, this arrangement requires the operator gun rotary drill chuck hit when holding the cartridge casing with no turn, is very laborious, and this impact self-locking clamp structure is only suitable for low speed power tools, range is very limited.

[0004] 发明内容 [0004] SUMMARY OF THE INVENTION

[0005] 本发明所要解决的技术问题是提供一种结构简单、使用方便的电动工具,能够自动实现夹头的松开和夹紧,使得刀具拆装过程既省力又快捷,提高了效率。 [0005] The present invention solves the technical problem to provide a simple structure, easy to use the electric power tool, capable of automatically releasing and clamping of the collet, such that the tool and quick disassembly process is both labor-saving and improve efficiency.

[0006] 本发明的技术方案是:一种电动工具,包括机壳,收容在所述机壳中的电机,由所述电机驱动旋转的输出轴以及连接所述输出轴与刀具的夹头,所述机壳上设置有可轴向运动而周向不能转动的冲击环,可转动的带内齿圈的圆环以及带大小齿轮的减速轴,所述减速轴与所述电机输出轴轴向平行设置,所述电机输出轴套接有可轴向移动地与所述夹头脱离或连接的导套,所述导套上设置有外齿圈与所述减速轴大齿轮啮合,所述减速轴小齿轮与所述圆环的内齿圈啮合,所述冲击环和所述圆环相对端面分别设置有可冲击的冲击齿, 所述冲击环与所述机壳之间还设置有弹簧,所述弹簧的一端与所述机壳连接,另一端与所述冲击环连接。 [0006] aspect of the present invention is: a power tool, comprising a housing, a motor housed in the housing in the output shaft driven in rotation by the motor and connected to said output shaft and collet tool, the upper cabinet is provided with a circumferentially and axially movable non-rotatable impact ring, with the ring gear of the reduction shaft and rotatable with the small gears, the reduction of the motor output shaft and an axial shaft arranged in parallel, is connected with the motor output shaft sleeve axially movable out of engagement with the collet or guide sleeve is connected, the guide sleeve is provided with an outer ring of the reduction shaft with the large gear, the reduction pinion meshing with the internal gear of the ring, said ring and said impact ring opposite end surfaces are respectively provided with a shock impulse tooth, said impact spring is provided between the ring and the housing, the spring has one end connected to the housing and the other end connected to said impact ring.

[0007] 本发明的进一步的技术方案是:一调节套套接在所述输出轴上,与所述机壳可转动地连接,所述调节套与所述导套之间还设置有一支撑套,所述调节套与所述支撑套相对面分别设置有凸起和可收容所述凸起的凹槽。 [0007] A further aspect of the present invention is: a regulator connected to the condom on the output shaft rotatably connected to the housing, between the control sleeve and the guide sleeve is also provided with a support sleeve, the adjusting sleeve and the support sleeve opposite surfaces are provided with projections and recesses receiving the projections.

[0008] 本发明电动工具由于采用了减速冲击结构,有效利用了电机驱动力,并使得带冲击齿的圆环旋转速度相对电机输出轴的转速大大降低,从而减少了冲击的次数,形成比较合理的冲击速度和力度,给予夹头在夹紧或松开方向上的打击力,使得夹头自己松开或夹紧,从而方便快捷地对刀具进行拆装,更加广泛的适用于各种高速的电动工具。 [0008] The electric power tool of the present invention adopts deceleration shock structure, effective use of the driving force of the motor, and such that the rotational speed of the ring gear with the impact is greatly reduced relative to the rotational speed of the output shaft of the motor, thereby reducing the impact of the number, form reasonable the impact velocity and intensity, giving chuck strike force on the clamp and unclamp direction, making their own release chuck or clamping, so the tool quickly and easily attached to and detached, more widely applicable to a variety of high-speed electrical tools.

[0009] 本发明电动工具由于进一步采用了调节套,使得本发明的电动工具能够轻松地在自动冲击更换刀具和正常的工作状态切换。 [0009] Since the electric power tool further uses the control sleeve, so that the electric power tool of the present invention can easily be impact automatic tool change and switching to normal working state of the present invention. 同时本发明的电动工具还具有结构简单、成本低、使用方便的特点。 While the electric power tool of the present invention also has a simple structure, low cost, easy to use features. [0010] 附图说明 [0010] BRIEF DESCRIPTION OF DRAWINGS

[0011] 下面结合附图以及具体的实施例对本发明做进一步说明。 [0011] conjunction with the accompanying drawings and the following specific examples further illustrate the present invention.

[0012] 图1是本发明较佳实施例电木铣的结构示意图; [0012] FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention, bakelite mill;

[0013] 图2是图1所示电木铣的部分三维立体分解图; [0013] FIG. 2 is a partial 3D Bakelite milling exploded perspective view shown in Figure 1;

[0014] 图3是本发明较佳实施例电木铣支撑套的立体结构图; [0014] FIG. 3 is a preferred embodiment of the present invention is a perspective structural view of the embodiment of bakelite milling support sleeve;

[0015] 图4是本发明较佳实施例电木铣调节套的立体结构图; [0015] FIG 4 is a preferred embodiment of the present invention bakelite mill adjusted a perspective structural view of the sleeve;

[0016] 图5是图1中A部所示本发明较佳实施例电木铣冲击结构的局部放大图,其中导套与夹头处于脱开位置; [0016] FIG. 5 is a section A in FIG. 1 the preferred embodiment of the present invention a partial structure of a bakelite impact milling enlarged view in which the guide sleeve in the disengaged position the collet;

[0017] 图6是图5所示本发明较佳实施例电木铣冲击结构在导套与夹头处于连接位置时的结构示意图; [0017] FIG 6 is a preferred embodiment of the impact milling Bakelite embodiment shown in FIG. 5 of the present invention, the structure of the guide sleeve is a schematic structural view in a connection position with the collet;

[0018] 其中: [0019] 10 基座、 11 导柱、 12机壳、[0020] 13 自旋装置、 14 电机、 15轴承、[0021] 16 输出轴、 17 轴承、 18刀具、[0022] 19 冲击装置、 20 夹头、 21延伸部、[0023] 22 导槽、 23 弹簧、 24冲击环、[0024] 26 径向突起、 28 第一冲击齿、 29减速机构、[0025] 30 内齿圈、 31 圆环、 32第二冲击齿、[0026] 34 机壳端盖、 35 中心孔、 43环形延伸部、[0027] 48 导槽、 45 卡槽、 37减速轴、[0028] 36 大齿轮、 38 小齿轮、 40导套、[0029] 41 轴承、 42 径向突起、 44外齿圈、[0030] 46 多边形孔、 50 支撑套、 52导向突起、[0031] 54 凹槽、 56 耐磨圈、 39弹簧、[0032] 60 调节套、 61 中心孔、 63凸缘、[0033] 62 钢丝挡圈、 64 凸起、 66挡位簧、[0034] 68 外螺纹、 69 锥孔、 70螺母、[0035] 72 锥夹体、 74 轴向孔、 76槽、[0036] 78 槽、 80 环形槽、 82钢丝挡圈、 [0018] wherein: [0019] the base 10, guide posts 11, the housing 12, [0020] 13 spinning apparatus, motor 14, bearing 15, [0021] an output shaft 16, the bearings 17, the cutter 18, [0022] impact device 19, collet 20, the extension portion 21, [0023] the guide groove 22, the spring 23, the impact ring 24, [0024] 26 projecting radially, the impact of the first gear 28, the reduction mechanism 29, [0025] 30 inner teeth ring, the ring 31, the teeth 32 of the second impact, [0026] the cabinet cover 34, the center hole 35, annular extension 43, [0027] the guide grooves 48, slot 45, the reduction shaft 37, [0028] 36 large a gear, a pinion gear 38, the guide sleeve 40, [0029] 41 bearing, radial protrusions 42, the outer ring gear 44, [0030] polygonal hole 46, support sleeve 50, guide projection 52, [0031] the grooves 54, 56 resistant grinding ring, the spring 39, [0032] the control sleeve 60, the center hole 61, the flange 63, [0033] wire ring 62, the projection 64, the spring gear 66, [0034] 68 externally threaded tapered bore 69, 70 nut, [0035] The tapered collet 72, the axial bore 74, groove 76, [0036] groove 78, annular groove 80, wire ring 82,

具体实施方式 detailed description

[0037] 参照图1所示,本发明较佳实施例电木铣包括水平基座10,由基座10垂直向上延伸的导柱11,可移动套接在导柱11上的机壳12、机壳12内部中空,收容有一垂直放置的电机14,电机14的两端分别通过轴承15和17支撑在机壳12上,电机14的输出轴16向下伸出机壳12,与一连接输出轴16与刀具18的多边形夹头20连接,机壳与夹头之间设置有自旋装置13,自旋装置13包括利用电机驱动力对夹头进行冲击的冲击装置19。 [0037] Referring to FIG. 1, the preferred embodiment of the present invention comprises a horizontal base 10 Bakelite milling, 11, the movable guide post socket housing by a base 10 extending vertically upward on the guide column 11 12, hollow interior casing 12, there is housed a motor 14 disposed vertically, both ends of the motor 14 through bearings 15 and 17 supported on the housing 12, the motor output shaft 14 extending downwardly casing 16 12, and an output connector 20 is connected to the polygonal shaft 16 the collet tool 18, 13, the spin apparatus 13 comprises an impact means 19 by a motor driving force to spin the cartridge impingement means disposed between the housing and the collet. 冲击装置19包括冲击环24,圆环31,机壳端盖34及减速机构四,减速机构四包括内齿圈30,减速轴37,导套40,支撑套50,弹簧39 (见图2或图幻和调节套60。本说明书中提到的上下是以基座平面为水平面,垂直于基座平面方向上的上下,也即电机轴线方向上的上下,以此为坐标,其他类推。 Impact device 19 includes an impact ring 24, ring 31, housing 34 and cover four reduction mechanism, the reduction mechanism comprising four ring gear 30, a reduction shaft 37, the guide sleeve 40, support sleeve 50, the spring 39 (see FIG. 2 or FIG phantom and vertical adjustment sleeve 60. mentioned in this specification is based on the base plane is a horizontal plane, perpendicular to the vertical plane in the direction of the base, i.e. in the vertical direction of the motor axis, this coordinate, the other on.

[0038] 参照图2所示,机壳12下端设置有向下延伸的延伸部21,延伸部21的外圆周设置有沿电机轴向的导槽22。 [0038] Referring to FIG. 2, the lower end of housing 12 is provided with a downwardly extending portion 21 extends, the outer circumference of the extension portion 21 is provided with a guide groove axial direction of the motor 22.

[0039] 一冲击环M内圈设置有可移动地收容在导槽22中的径向突起沈,冲击环M的下端面还设置有第一冲击齿观,其中冲击环M与机壳12之间还设置有多个弹簧23,使得冲击环M在受到冲击时能够轴向运动,弹簧23在安装时一端抵靠在冲击环M的上端面,另一端抵靠在机壳12的下端面上。 [0039] an inner ring is provided with impact ring M is movably accommodated in the guide slot 22 radially projecting sink, under the impact of the end face is further provided with a ring M tooth concept first impact, wherein the impact ring 12 and the housing of the M further provided between a plurality of springs 23, so that the shock upon impact ring M axially movable, spring 23 is mounted at one end against the upper end surface of the impact ring M, and the other end against the lower end face 12 of the housing .

[0040] 一带内齿圈30的圆环31,其上表面设置有第二冲击齿32,可转动地收容在机壳端盖;34中。 [0040] The inner ring 31 along the ring gear 30, which is provided with a second impact on the surface of teeth 32 is rotatably housed in the housing cap; 34.

[0041] 机壳端盖34为内部中空,上端开放下端封闭的圆筒状,底部设置有中心孔35,其底部下表面还设置有向下延伸的环形延伸部43,延伸部43内部直径大于中心孔35的直径, 延伸部43内周壁设置有轴向延伸的导槽48,外周壁设置有卡槽45,机壳端盖34可与机壳12通过螺栓等连接件固定连接。 [0041] The housing cover 34 is a hollow interior, an open upper end closed cylindrical lower end, a bottom provided with a central hole 35, in its bottom surface provided with an annular extension 43 extending downwardly, inner diameter larger than the extension portion 43 inner diameter, a central bore 35 extending portion 43 of the peripheral wall is provided with axially extending guide groove 48, the outer peripheral wall 45 is provided with a slot, the housing cover 34 and the housing 12 is connected by bolts or the like member is fixedly connected.

[0042] 机壳12和机壳端盖34间还设置有与电机输出轴16平行设置的减速轴37,减速轴37两端通过轴承可转动的与机壳12下端面和机壳端盖34的底部连接,减速轴37上套接有大齿轮36和小齿轮38,当然,大齿轮36和小齿轮38也可以与减速轴37 —体设置,其中小齿轮38与圆环31的内齿圈30啮合。 [0042] The housing 12 and the housing cap 34 is also provided with a reduction shaft 16 provided parallel to the motor output shaft 37, both ends of the reduction shaft 37 can be rotated by a bearing 12 and the lower end surface of the housing and the housing cap 34 connected to the bottom, the reduction shaft 37 is mounted a large gear 36 and the pinion 38, of course, the large gear 36 and the pinion shaft 38 and the reduction may be 37 - body is disposed, wherein the pinion gear 38 and ring gear 31 of the ring 30 is engaged.

[0043] 一环形导套40通过一可轴向滑动的轴承41套接在电机输出轴16上,导套40外圆周面的中部设置有径向突起42,导套40外圆周面的上部设置有外齿圈44可与减速轴37 上的大齿轮36啮合,导套40内圆周面的下部设置为可收容夹头20的多边形孔46。 [0043] An annular guide sleeve 40 by a bearing 41 axially slidable sleeved on the motor output shaft 16, 40 arranged in the middle of the outer circumferential surface of the guide sleeve has a radial projection 42, the upper outer circumferential surface 40 of the guide bush provided an outer ring 44 may be engaged with the large reduction gear 37 of the shaft 36, the lower portion of the inner circumferential surface of the guide sleeve 40 is provided to be polygonal hole 20 receiving the collet 46.

[0044] —环形支撑套50套接在输出轴16上,其外表面设置有收容在轴向导槽48中的径向导向突起52,支撑套50内表面设置有从下端面向上凹进的凹槽M,如图3所示。 [0044] - an annular support sleeve 50 is sleeved on the output shaft 16, housed radially outer surface is provided with a guide groove 48 in the shaft guide projection 52, support sleeve 50 is provided with a surface recessed from the lower end face recess grooves M, as shown in FIG. 支撑套50上表面通过一耐磨圈56与径向突起42的下表面相抵靠,耐磨圈56可减小支撑套50与径向突起42之间的硬摩擦损伤,从而延长支撑套50与导套40的使用寿命。 Upper surface of support sleeve 50 by means of a wear ring 56 against the lower surface of the radial projections 42 on, wear ring 56 can be reduced and the radially projecting support sleeve 50 between the hard rub damage 42, thereby extending the support sleeve 50 and 40 of the guide sleeve life.

[0045] 一弹簧39套接在导套40上部,弹簧39 —端抵靠在机壳端盖34底部下表面,另一端抵靠在径向突起42的上表面,使得导套40和支撑套50始终保持接触。 [0045] A spring 39 is sleeved on the upper portion of the guide sleeve 40, the spring 39 - an end abutted against a lower surface of the bottom housing cover 34, the other end against a radial projection surface 42, such that the guide sleeve 40 and support sleeve 50 remain in contact.

[0046] —内部中空,上端开放下端封闭的圆筒状调节套60,其底部设置有中心孔61,沿调节套60上端的外圆周设置一凸缘63,通过一钢丝挡圈62可转动地与机壳端盖34连接, 调节套60的底部上端面沿中心孔61圆周方向设置有可收容在支撑套50的凹槽M中的凸起64,如图4所示。 [0046] - a hollow interior, an open upper end closed cylindrical lower setting sleeve 60, the bottom thereof is provided with a central hole 61, a flange 63 is provided along the outer circumference of the upper end of the adjustment sleeve 60 can be rotated by a ground wire ring 62 an end cap connected to the housing 34, along the end surface of adjusting sleeve 60 on the bottom of the central bore 61 is provided with a circumferential direction of the support sleeve may be received in a recess in the M 50 projection 64, as shown in FIG.

[0047] 一挡位簧66设置在调节套60与机壳端盖34之间,挡位簧66为一中间拱起的簧片,其中间拱起部抵靠在调节套60内周壁上,挡位簧66的两支脚抵靠在机壳端盖34的延伸部43外周壁的卡槽45中,将调节套60与机壳端盖34位置保持稳定。 [0047] a gear spring 66 is disposed between the control sleeve 60 and the casing cover 34, an intermediate gear 66 is a spring arched reed, wherein between the arched portion 60 abuts against the inner peripheral wall of the control sleeve, the legs 66 of the gear spring housing cap slot 43 abuts the outer peripheral wall 45 of the extension 34, the position of the adjustment sleeve 34 and the housing cap 60 remains stable.

[0048] 输出轴16的下端伸出调节套60的中心孔61,其外表面设置有外螺纹68,轴心处设置有上小下大的锥孔69。 Lower [0048] projecting output shaft 16 central bore 61 adjusting sleeve 60, the outer surface is provided with an external thread 68, the axial center is provided with a small hole 69 is large cone.

[0049] 夹头20包括带内螺纹的螺母70和上小下大的锥夹体72。 [0049] The cartridge 20 includes a threaded nut 70 is large and small tapered collet 72. 螺母70为多边体,如正五边或正六边体。 Nut 70 multilateral bodies, such as regular pentagonal or regular hexagonal body. 锥夹体72设置有可收容刀具的轴向孔74,锥夹体72的周壁上下端分别开设相互错开的均勻分布的多个槽76和78,锥夹体72大端设置有环形槽80可与螺母70通过一钢丝挡圈82卡接。 Tapered collet 72 is provided an axial bore configured to accommodate a cutter 74, the lower end of the peripheral wall of the tapered collet 72 defines a plurality of grooves are evenly distributed staggered 76 and 78, the large end of the taper collet 72 can be provided with an annular groove 80 70 with the nut 82 connected by a wire ring card. 本发明的夹头20与输出轴16配接时,锥夹体72的外锥面插入输出轴16的锥孔69中,螺母70内螺纹与输出轴16外螺纹68螺纹连接。 When the cartridge 20 of the present invention, the output shaft 16 is connected with, the outer tapered surface tapered clip body 72 is inserted into the taper hole 16 of the output shaft 69, the threaded nut 70 and the output shaft 16 external thread 68 a threaded connection.

[0050] 参见图5所示,本发明的电木铣在安装刀具时,先将刀具18插入夹头20的轴向孔74中,然后旋转螺母70上紧,带动锥夹体72的外锥面向上插入输出轴16的锥孔69中, 锥孔69挤压锥夹体72变形从而给予刀具一定的预紧力。 [0050] Referring to FIG. 5, the present invention Bakelite milling tool during installation, the tool in the collet 18 is inserted into the axial hole 74 is 20, and the rotation of the nut 70 tightened, the collet tapered outer cone drive 72 inserted into the output shaft 69 facing the tapered hole 16, tapered hole 69 tapered deformable squeeze collet 72 thereby giving the tool a certain preload. 这时,操作者就可以克服挡位簧66(见图2、的弹力手动旋转调节套60,当调节套60的底部凸起64与支撑套50的凹槽M 对齐,支撑套50轴向下移,凹槽M套接在调节套60的底部凸起64上,此时,导套40也随之轴向下移,导套40下部的多边形孔46与夹头20对接,如图6所示,从而使导套40与夹头20的螺母70保持相对旋转固定连接。开动电机14,电机输出轴16转动,带动夹头20转动,夹头20继而带动导套40转动,导套外齿圈44带动减速轴37的大齿轮36转动,也即带动减速轴小齿轮38转动,减速轴小齿轮38继而带动带内齿圈30的圆环31转动,由于冲击环M周向不能转动,而只能在轴向运动,圆环31转动时,冲击环M下端的第一冲击齿观对圆环31的第二冲击齿32给予与其旋转方向相反的冲击力,而冲击环对自身也在冲击力作用下轴向上移与圆环31脱离,而后又在弹簧23的弹力作用下轴向下 In this case the manual force of the operator can be overcome gear spring 66 (see FIG. 2, the rotation of the control sleeve 60, when the bottom protrusion 64 of the control sleeve 60 is aligned with the recess M brace 50, the support sleeve 50 axially move, the bottom of the groove M of the control sleeve 60 is sleeved on the protrusion 64, this time, the guide sleeve 40 is also axially down along the guide sleeve polygonal hole 40 of the lower portion 4620 mating with the cartridge, FIG. 6 shown, so that the guide sleeve 40 and the nut 70 remains rotationally fixed relative to the chuck 20 connected to the motor 14 actuated, the motor output shaft 16 rotates, the chuck 20 is rotated to drive the collet 20 is then rotated to drive the guide sleeve 40, an outer guide sleeve teeth ring 44 is rotated to drive the large gear 36 of the reduction shaft 37, i.e., the reduction drive pinion 38 rotates, the rotation of the ring gear 38 of the reduction shaft in turn driven by a small band 31 of the ring gear 30, due to the impact circumferential ring M can not be rotated, and only axial movement during rotation, the ring 31, the lower end of the first impact of the impact ring gear concept M to the ring 31 of the second teeth 32 impact given its rotational direction opposite to the impact force, but also the impact ring of impact itself move under the force of the axial direction from the ring 31, and then axially under the elastic force of the spring 23 继续对圆环31的第二冲击齿32给予冲击,冲击力使得夹头20的螺母70与输出轴16之间产生速度差,从而相对输出轴16轴向向上运动,带动锥夹体72的外锥面向上进一步插入输出轴16的锥孔69 中,锥孔69进一步挤压锥夹体72变形从而将刀具夹紧。在工作时,操作者手动旋转调节套60,调节套60的底部突起64将支撑套50顶起,使得导套40脱离夹头20,回到图5所示状态,电木铣即可进行铣削工作。 The second ring 31 continues to impact on the impact given to the teeth 32, the collet nut 20 such that the impact force generated speed difference between output shafts 70 and 16, so that relative axial movement of the output shaft 16 upwardly, driving the clip body 72 of the outer cone tapered further up into the output shaft 69 of the taper hole 16, tapered hole 69 tapered deformable clip 72 is further pressed so that the toolholder body. in operation, the operator manually rotating the control sleeve 60, the adjustment sleeve 60 the bottom 64 of the projection since the support sleeve 50, so that the guide sleeve 40 from the chuck 20, the state shown in FIG. 5, bakelite mill milling work can be carried out.

[0051] 本发明的电木铣在拆卸刀具时,操作者克服挡位簧66的弹力手动旋转调节套60, 使得支撑套50轴向下移,凹槽M套接在调节套60的底部突起64上,这时,导套40也随之轴向下移,其下部的多边形孔46与夹头20对接,从而使导套40与夹头20的螺母70保持相对旋转固定连接。 [0051] The present invention Bakelite milling tool during disassembly, the operator manually against the force of the spring gear 66 rotating the control sleeve 60, so that the support sleeve 50 axially down the groove M in the control sleeve 60 is sleeved projections bottom 64, when the guide sleeve 40 will be moved down axially, its lower polygonal hole 4620 and the collet docking, thereby holding the guide sleeve 40 with the collet nut 70 is rotationally fixed relative to the connection 20. 开动电机14向相反方向旋转,电机输出轴16转动,带动夹头20转动, 夹头20继而带动导套40转动,导套外齿圈44带动减速轴大齿轮36转动,也即带动减速轴小齿轮38转动,减速轴小齿轮38继而带动带内齿圈30的圆环31转动,由于冲击环M周向不能转动,而只能在轴向运动,圆环31转动时,冲击环M下端的第一冲击齿28对圆环31的第二冲击齿32给予与其旋转方向相反的冲击力,而冲击环M自身也在冲击力作用下轴向上移与圆环31脱离,而后又在弹簧23的弹力作用下轴向下移继续对圆环31的第二冲击齿32给予冲击,冲击力使得夹头20的螺母70与输出轴16之间产生速度差,从而相对输出轴16轴向向下运动,带动锥夹体72的外锥面向下运动逐渐脱离输出轴16的锥孔69,从而松开锥夹体72,最终将刀具松开,操作者即可轻松进行刀具的更换。 Actuating the motor 14 is rotated in the opposite direction, the motor output shaft 16 rotates, driven by the chuck 20 is rotated, the chuck 20 is then rotated to drive the guide sleeve 40, guide sleeve outer ring gear 44 to drive large gear reduction shaft 36 rotates, i.e. reduction shaft driven by a small gear 38 is rotated, the pinion gear reduction shaft 38 in turn rotates the driven gear 30 with the ring 31, the ring can not rotate due to the impact in the circumferential direction M, but only movement in the axial direction, the ring 31 is rotated, the lower end of the impact ring M tooth 28 strikes the first shock administering to impact ring 31 of teeth 32 of the second rotational direction opposite thereto a force, and the impact ring M itself also move axially under the impact force from the ring 31, and then the spring 23 under the action of the axial force of the impact on the continued downward impact ring 31 of the second tooth 32, the collet nut 20 such that the impact velocity difference is generated between the shaft 70 and the output 16, so that relative to the output shaft 16 axially downwardly movement, driven by the collet tapered outer tapered surface 72 is gradually moved downward from the tapered bore 69 of the output shaft 16, thereby releasing the tapered collet 72, will eventually release the tool, the operator can easily replace the tool.

Claims (8)

  1. 1. 一种电动工具,包括机壳,收容在所述机壳中的电机,由所述电机驱动旋转的输出轴以及连接所述输出轴与刀具的夹头,其特征在于:所述机壳上设置有可轴向运动而周向不能转动的冲击环,可转动的带内齿圈的圆环以及带大小齿轮的减速轴,所述减速轴与所述电机输出轴轴向平行设置,所述电机输出轴套接有可轴向移动地与所述夹头脱离或连接的导套,所述导套上设置有外齿圈与所述减速轴大齿轮啮合,所述减速轴小齿轮与所述圆环的内齿圈啮合,所述冲击环和所述圆环相对端面分别设置有可冲击的冲击齿,所述冲击环与所述机壳之间还设置有弹簧,所述弹簧的一端与所述机壳连接,另一端与所述冲击环连接。 1. A power tool, comprising a housing, a motor housed in the housing in the output shaft driven by the motor to rotate the output shaft and collet connector and the tool, wherein: said housing is provided with an axially movable but not rotatable in the circumferential direction of the impact ring, with the ring gear of the reduction shaft and rotatable with the size of the gears, the reduction shaft and the motor output shaft disposed in parallel, the a motor connected with said output hub axially movable out of engagement with the collet or guide sleeve is connected, the guide sleeve is provided with an external ring gear meshing with the large gear of the reduction shaft, the reduction shaft with a pinion the inner ring gear of the ring, said ring and said impact ring opposite end surfaces are respectively provided with a shock impulse tooth, said impact spring is provided between the ring and the housing, the spring one end of the housing and the other end connected to said impact ring.
  2. 2.根据权利要求1所述的电动工具,其特征在于:一调节套套接在所述输出轴上,与所述机壳可转动地连接,所述调节套与所述导套之间还设置有一支撑套,所述调节套与所述支撑套相对面分别设置有凸起和可收容所述凸起的凹槽。 The electric power tool according to claim 1, wherein: a regulator connected to the output shaft condom is rotatably connected to the housing, said adjusting sleeve provided between the guide sleeve and a support sleeve, the adjusting sleeve and the support sleeve opposite surfaces are provided with projections and recesses receiving the projections.
  3. 3.根据权利要求2所述的电动工具,其特征在于:所述调节套与所述机壳之间还设置有档位簧。 The electric tool according to claim 2, wherein: the adjusting spring is further provided between the shift sleeve and the housing.
  4. 4.根据权利要求2所述的电动工具,其特征在于:所述支撑套与所述导套之间设置有耐磨圈。 The electric tool according to claim 2, wherein: a wear-resistant ring between the support sleeve and the guide sleeve is provided.
  5. 5.根据权利要求1所述的电动工具,其特征在于:所述夹头为多边体,所述导套设置有可收容所述夹头的多边孔。 The power tool according to claim 1, wherein: said polygonal chuck body, the guide sleeve is provided with a receiving hole of the collet multilateral.
  6. 6.根据权利要求1所述的电动工具,其特征在于:所述输出轴的下端外表面设置有外螺纹,轴心处设置有上小下大的锥孔,所述夹头包括带内螺纹的螺母和上小下大的锥夹体, 所述锥夹体设置有可收容刀具的轴向孔,所述夹头与所述输出轴配接时,所述锥夹体的外锥面插入所述输出轴的锥孔中,所述螺母与所述输出轴螺纹连接。 The electric tool according to claim 1, wherein: the surface is provided with an external thread, is provided at the axial center with a small tapered hole is large, the collet comprises an inner thread with an outer lower end of the output shaft a nut is large and small tapered collet, when the body is provided with an axial bore receiving said tapered clamp the tool, the collet mating with the output shaft, an outer tapered surface of said clamp member is inserted into the cone cone of the output shaft, the output shaft of the nut and screw connection.
  7. 7.根据权利要求6所述的电动工具,其特征在于:所述锥夹体的周壁上下端分别开设相互错开的均勻分布的多个槽。 The power tool according to claim 6, wherein: the peripheral wall of the lower end of the tapered collet defines a plurality of grooves are uniformly distributed offset one another.
  8. 8.根据权利要求6所述的电动工具,其特征在于:所述锥夹体大端与所述螺母通过一钢丝挡圈连接。 8. The power tool according to claim 6, wherein: the nut body and the large end of said tapered clamp ring connected by a wire.
CN 200910006652 2008-11-28 2009-02-06 electrical tools CN101758270B (en)

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CN102485437A (en) * 2010-12-04 2012-06-06 浙江特畅恒实业有限公司 Pendulum-type power tool

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US5897454A (en) 1996-01-31 1999-04-27 Black & Decker Inc. Automatic variable transmission for power tool
CN2407862Y (en) 2000-02-16 2000-11-29 谢春菊 Composite gripping head structure of electric drill
WO2006113383A2 (en) 2005-04-19 2006-10-26 Black & Decker Inc. Power tool with power driven chuck
EP1815948A2 (en) 2006-02-03 2007-08-08 Black & Decker, Inc. Housing and Gearbox for Drill or Driver
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CN201353804Y (en) 2009-03-02 2009-12-02 苏州宝时得电动工具有限公司 electrical tools

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