JP2004255557A - Power transmission device capable of automatic gear shifting - Google Patents
Power transmission device capable of automatic gear shifting Download PDFInfo
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- JP2004255557A JP2004255557A JP2003385574A JP2003385574A JP2004255557A JP 2004255557 A JP2004255557 A JP 2004255557A JP 2003385574 A JP2003385574 A JP 2003385574A JP 2003385574 A JP2003385574 A JP 2003385574A JP 2004255557 A JP2004255557 A JP 2004255557A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 81
- 230000006835 compression Effects 0.000 claims description 17
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- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 20
- 230000008859 change Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 230000009467 reduction Effects 0.000 description 30
- 238000006243 chemical reaction Methods 0.000 description 5
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- 230000004308 accommodation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008713 feedback mechanism Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/008—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with automatic change-over from high speed-low torque mode to low speed-high torque mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/46—Gearings having only two central gears, connected by orbital gears
- F16H3/48—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears
- F16H3/52—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears comprising orbital spur gears
- F16H3/54—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears comprising orbital spur gears one of the central gears being internally toothed and the other externally toothed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0293—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being purely mechanical
- F16H61/0295—Automatic gear shift control, e.g. initiating shift by centrifugal forces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/68—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings
- F16H61/684—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings without interruption of drive
- F16H61/686—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings without interruption of drive with orbital gears
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- Portable Power Tools In General (AREA)
Abstract
Description
本発明は一種の自動変速可能な動力伝送装置に係り、特にトルクフィードバック装置により伝送装置中の切り換え歯車位置を制御し、さらにこの切り換え歯車により伝送装置中の変速シフト位置を切り換え、これにより負荷トルクが増加或いは低減する時に、自動的に動力伝送装置の減速機構を切り換えることができる、自動変速可能な動力伝送装置に関する。
The present invention relates to a kind of automatic transmission power transmission device, in particular, a torque feedback device controls a switching gear position in the transmission device, and further uses this switching gear to switch a shift shift position in the transmission device, whereby load torque BACKGROUND OF THE
周知の動力伝送装置、特に電動回転工具(例えば電気ドリル、電動スクリュードライバー)に使用される多段変速動力伝送装置は、通常、減速機構を使用することで多段変速或いは多段トルクを提供している。一般に、このような減速機構は複数組の遊星歯車機構で構成され、それは手動機構により内部のクラッチ或いはそれらに駆動される機構を制御することで、各歯車系中のある部品を固定するかある部品を駆動し、これにより異なる入力及び出力減速比の機能を達成している。 Known power transmission devices, in particular, multi-speed transmission power transmission devices used for electric rotary tools (for example, electric drills and electric screwdrivers) usually provide multi-speed or multi-stage torque by using a speed reduction mechanism. Generally, such a speed reduction mechanism is composed of a plurality of planetary gear mechanisms, which may fix a certain component in each gear system by controlling an internal clutch or a mechanism driven by them by a manual mechanism. The components are driven, thereby achieving different input and output reduction ratio functions.
前述の周知の動力伝送装置の減速機構には、使用者がその使用経験を通して、或いは操作過程で加工状況を観察して主観判断を行なった後に、手動で減速機構をシフト位置を変換し、これにより作業に十分なトルク或いは回転速度を提供する。一般に減速機構の駆動モータのトルク、回転層度、損耗効率及び機械効率には一定の関係があり、その損耗効率と機械効率は通常、トルクと回転速度の乗積の増加により高まり、トルクと回転速度の乗積がある特定値に達すると、その損耗効率が続けて増加すると、機械効率が徐々に下降する。しかし、人為操作による制御は、往々にして駆動モータを機械効率の最良の範囲内で操作できない。このため、負荷トルクフィードバックの機構により、自動的に減速機構のシフト位置を切り換えることが必要になる。本発明は周知の動力伝送装置の減速機構の欠点を改善するものである。 The speed reducing mechanism of the above-mentioned known power transmission device has the user manually change the shift position of the speed reducing mechanism after observing the machining status in the operation process or after making a subjective judgment through the operation process. Provides sufficient torque or rotational speed for work. Generally, there is a fixed relationship between the torque of the drive motor of the speed reduction mechanism, the rotation layer, the wear efficiency, and the mechanical efficiency. The wear efficiency and the mechanical efficiency are usually increased by increasing the product of the torque and the rotational speed. When the product of speed reaches a certain value, the mechanical efficiency gradually decreases as the wear efficiency continues to increase. However, control by human operation often fails to operate the drive motor within the best range of mechanical efficiency. For this reason, it is necessary to automatically switch the shift position of the speed reduction mechanism by the load torque feedback mechanism. The present invention improves the drawbacks of known speed reduction mechanisms for power transmission devices.
本発明は一種の自動変速可能な動力伝送装置を提供して周知の技術中の制限と欠点を解決することを目的としている。 It is an object of the present invention to provide a kind of power transmission device capable of automatic shifting to solve the limitations and disadvantages in the known art.
上述の目的を達成するため、本発明の提供する自動変速可能な動力伝送装置は、中空ケースの形成する座体内に伝送装置とトルクフィードバック装置が順に取り付けられてなる。本発明の特徴は、トルクフィードバック装置が相互に噛み合う推力輪とスライドリングを具え、且つ嵌め輪が座体に組み合わされて圧縮バネを該座体の外環周囲に拘束し、該推力輪は該座体の外縁に固定されたねじりバネの作用を受けてその回転角度が制限され、該スライドリングは該座体の内部に拘束されて往復上下移動のみ可能である。該伝送装置は内歯車構造の切り換え歯車が、二組の遊星歯車セットに噛み合って構成され、且つ該切り換え歯車の外環周囲に周囲に内に凹んだ環状溝が形成されている。前述の嵌め輪中に取り付けられた複数のピンが切り換え歯車の環状溝中に挿入されて該切り換え歯車を第1極限位置に拘束して二組の遊星歯車セットに同時に噛み合わせるか、或いは該切り換え歯車を第2極限位置に拘束して第2遊星歯車セットのみと噛み合わせる。これにより、前述の推力輪が受ける負荷トルクがねじりバネと圧縮バネの抵抗を克服できない時、該切り換え歯車は第1極限位置にあり、並びにこの二組の遊星歯車セットに噛み合い且つそれと同期回転する。前述の推力輪の受ける負荷トルクがねじりバネと圧縮バネの抵抗を克服する時、それは自転を発生し並びにそれと噛み合った斜面により該スライドリングを駆動して、該スライドリングに切り換え歯車を制圧して移動させ、これにより切り換え歯車が第2極限位置となり且つ該座体内底部のフランジと係合し回転不能とされる。ゆえに、本発明の自動変速可能な動力伝送装置は負荷トルクの増加或いは減少時に、動力伝送装置の減速機構を自動的に切り換えて、自動でシフト位置変換を達成し、且つ動力伝送装置の機械効率を向上する。 In order to achieve the above-described object, a power transmission device capable of automatic transmission provided by the present invention is configured such that a transmission device and a torque feedback device are sequentially attached to a seat formed by a hollow case. A feature of the present invention is that the torque feedback device includes a thrust ring and a slide ring that mesh with each other, and a fitting ring is combined with the seat body to restrain a compression spring around the outer ring of the seat body. The rotation angle is limited by the action of a torsion spring fixed to the outer edge of the seat body, and the slide ring is restricted inside the seat body and can only reciprocate up and down. In this transmission device, a switching gear having an internal gear structure is configured to mesh with two planetary gear sets, and an annular groove recessed inward is formed around the outer ring of the switching gear. A plurality of pins mounted in the aforementioned fitting ring are inserted into the annular groove of the switching gear, and the switching gear is constrained to the first limit position and meshed with two planetary gear sets at the same time, or the switching The gear is constrained to the second limit position and meshed only with the second planetary gear set. As a result, when the load torque received by the thrust wheel cannot overcome the resistance of the torsion spring and the compression spring, the switching gear is in the first limit position, and meshes with and rotates synchronously with the two planetary gear sets. . When the load torque received by the thrust wheel overcomes the resistance of the torsion spring and the compression spring, it generates rotation and drives the slide ring by the inclined surface meshed therewith to control the switching gear to the slide ring. This causes the switching gear to be in the second extreme position and engages with the flange at the bottom of the seat to render it non-rotatable. Therefore, the power transmission apparatus capable of automatic transmission according to the present invention automatically shifts the speed reduction mechanism of the power transmission apparatus when the load torque increases or decreases, automatically achieves shift position conversion, and mechanical efficiency of the power transmission apparatus. To improve.
請求項1の発明は、中空ケースの形成する座体内に伝送装置とトルクフィードバック装置が順に取り付けられてなる自動変速可能な動力伝送装置において、
該座体は、厚さ方向に貫通する複数の案内溝を具え、該座体の内底部と外底部にそれぞれフランジが形成され、且つ該座体の内表面に上端面より軸方向に沿って延伸された複数の溝が設けられ、
該伝送装置は、内歯車構造の切り換え歯車が、第1遊星歯車セットと第2遊星歯車セットに噛み合わされて構成され、該第1遊星歯車セットが外歯車を具え、該切り換え歯車の外環周囲に周囲に内に凹んだ環状溝が形成され、該切り換え歯車の外表面底部に該座体の内底部のフランジと組み合わされる複数の凹溝が形成され、
該トルクフィードバック装置は、複数の斜面で構成された二端面が相互に噛み合う推力輪とスライドリングを具え、且つ該座体外表面のフランジに組み合わされた嵌め輪を具え、該嵌め輪により圧縮バネが該座体の外環周囲に交錯され、該スライドリングの外表面に該座体の溝に嵌入する複数のリブが設けられ、該スライドリングが該溝に沿って往復上下移動可能とされ、該嵌め輪に取り付けられた複数のピンが該座体の各案内溝中に挿入されてその制限を受け、該ピンが並びに切り換え歯車の環状溝中に挿入され、該切り換え歯車を第1極限位置に拘束して第1遊星歯車セットと第2遊星歯車セットに噛み合わせるか、或いは切り換え歯車を第2極限位置に拘束して第1遊星歯車セットのみと噛み合わせ、
前述の推力輪が回転させられる時、それが噛み合う斜面によりスライドリングを押動し、該スライドリングが切り換え歯車を制圧し並びに嵌め輪を駆動して該圧縮バネを制圧させて軸方向の抵抗力を発生させ、
該切り換え歯車が第1極限位置にある時、それは第1遊星歯車セット及び第2遊星歯車セットと同期回転し、
前述の切り換え歯車が第2極限位置にある時、その底部の凹溝が座体内底部のフランジと噛み合って回転不能とされることを特徴とする、自動変速可能な動力伝送装置としている。
請求項2の発明は、請求項1記載の自動変速可能な動力伝送装置において、トルクフィードバック装置がねじりバネを具え、該ねじりバネの一端が推力輪外縁に固定され、もう一端が座体外縁に固定されたことを特徴とする、自動変速可能な動力伝送装置としている。
The invention of
The seat body includes a plurality of guide grooves penetrating in the thickness direction, flanges are formed on the inner bottom portion and the outer bottom portion of the seat body, respectively, and the inner surface of the seat body is formed along the axial direction from the upper end surface. A plurality of elongated grooves are provided,
The transmission device is configured such that a switching gear having an internal gear structure is meshed with a first planetary gear set and a second planetary gear set, the first planetary gear set includes an external gear, and an outer ring around the switching gear. An annular groove recessed inward is formed in the periphery, and a plurality of recessed grooves to be combined with the flange of the inner bottom portion of the seat body are formed at the bottom of the outer surface of the switching gear,
The torque feedback device includes a thrust ring formed by a plurality of inclined surfaces that mesh with each other and a slide ring, and a fitting ring that is combined with a flange on the outer surface of the seat body, and a compression spring is provided by the fitting ring. A plurality of ribs that are interlaced around the outer ring of the seat body and that are fitted into the groove of the seat body are provided on the outer surface of the slide ring, and the slide ring can be reciprocated up and down along the groove, A plurality of pins attached to the fitting ring are inserted into the guide grooves of the seat body to be restricted, and the pins are inserted into the annular groove of the switching gear, so that the switching gear is in the first extreme position. Restrain and mesh with the first planetary gear set and the second planetary gear set, or restrain the switching gear to the second limit position and mesh with only the first planetary gear set,
When the aforementioned thrust wheel is rotated, the slide ring is pushed by the slope with which it engages, and the slide ring suppresses the switching gear and drives the fitting wheel to suppress the compression spring to thereby suppress the axial resistance force. Is generated,
When the switching gear is in the first limit position, it rotates synchronously with the first planetary gear set and the second planetary gear set;
When the above-described switching gear is in the second limit position, the groove at the bottom engages with the flange at the bottom of the seat body so that rotation is impossible, and the power transmission device is capable of automatic transmission.
According to a second aspect of the present invention, in the power transmission apparatus capable of automatic transmission according to the first aspect, the torque feedback device includes a torsion spring, one end of the torsion spring is fixed to the outer edge of the thrust ring, and the other end to the outer edge of the seat body. The power transmission device is capable of automatic transmission and is characterized by being fixed.
本発明の自動変速可能な動力伝送装置は以下の作用と効果を達成する。
1.本発明の自動変速可能な動力伝送装置は、負荷トルクの増加或いは減少時に、自動的に動力伝送装置の減速機構を切り換えて、シフト位置の自動変換を達成する。
2.本発明の動力伝送装置の自動変速機能により、その動力伝送装置のトルクと回転速度を制御でき、比較的低い損耗効率で高い機械効率の範囲に維持できる。
The automatic transmission power transmission device of the present invention achieves the following operations and effects.
1. The power transmission apparatus capable of automatic shifting according to the present invention achieves automatic shift position conversion by automatically switching the speed reduction mechanism of the power transmission apparatus when the load torque increases or decreases.
2. With the automatic transmission function of the power transmission device of the present invention, the torque and rotational speed of the power transmission device can be controlled, and can be maintained within a high mechanical efficiency range with relatively low wear efficiency.
本発明の自動変速可能な動力伝送装置は、図1、2に示されるように、座体1、トルクフィードバック装置2、及び伝送装置3で構成されている。
As shown in FIGS. 1 and 2, the power transmission device capable of automatic transmission according to the present invention includes a
該座体1は円柱形ケースとされ、その内部に中空の収容室11が形成され、該収容室11の底部周囲に表面より突出する複数のフランジが形成され、且つ軸方向の位置に、ケースを貫通する複数の三角状の案内溝12が形成され、各案内溝12の底部にケース表面より突出するフランジ13が形成されている。また、該収容室11の端面に軸方向に凹みケースの厚さ方向に貫通するスリット14が設けられ、この端面より軸方向に沿って該収容室11の内表面に複数の下向きに凹んだ凹溝15が形成されている。
The
該トルクフィードバック装置2は、ねじりバネ21、推力輪22、スライドリング23、嵌め輪24及び圧縮バネ25を具えている。該推力輪22の外表面に表面より突出する複数の台形部22aが形成され、且つ内表面に内歯車22bが形成され、該推力輪22の外表面にさらに内に凹み並びに両端端面を貫通するスリット22cが形成されている。該スライドリング23は上端面に複数の台形の凹凸状の台形部23aが形成され、且つ外表面に複数の突出するリブ23bが形成され、各台形部23aが推力輪22中の各台形部22aと噛み合い、各リブ23bは座体1の収容室11中の各溝15に組み合わされ、これにより該スライドリング23が該座体1の収容室11内表面に沿って軸方向に往復移動可能とされる。該嵌め輪24はC形ケース構造とされ、その外表面上部に表面より突出する複数のフランジ24aが設けられ、且つ該嵌め輪24の底部にそのケースを貫通し並びに該座体1の各案内溝12に組み合わされる複数のピンシート24bが形成され、各ピンシート24bにそれぞれピン24cが取り付けられている。該圧縮バネ25は該座体1の外周に嵌合され、並びに該座体1のフランジ13と該嵌め輪24のフランジ24aの間に制限され、それは嵌め輪24の移動を受けて軸方向の弾力を発生する。該ねじりバネ21は、抵抗トルクを提供する構造とされ、その一端に上固定端21aが形成され、別端に下固定端21bが形成され、該上固定端21aが推力輪22のスリット22c中に嵌め込まれ、該下固定端21bが該座体1のスリット14中に嵌め込まれ、これにより該推力輪22を該座体1の開始相対位置に拘束する。
The torque feedback device 2 includes a
該伝送装置3は入力歯車31、前減速輪32、切り換え歯車33及び後ろ減速輪34を具えている。該入力歯車31は動力伝送装置(図示せず)の動力伝送歯車とされる。該前減速輪32は外歯車構造とされ、その一端に複数の遊星輪32aが枢設され、もう一端に駆動歯車32bが接続されて動力を後ろ減速輪34に伝送し、各遊星輪32aは同時に該入力歯車31と該推力輪22の内歯車22bに噛み合い、これにより遊星歯車減速機構を形成している。該切り換え歯車33は内歯車構造とされ、その外環周囲に内に凹んだ環状溝33aが形成され、且つその底端面に端面表面に分散配列された複数の凹溝33bを具え、前述の嵌め輪24中の各ピン24cが該座体1の案内溝12を貫通して該環状溝33aに挿入され、各凹溝33bが該座体1の収容室11底端の各フランジに噛み合う。該後ろ減速輪34は円盤構造とされ、その一端に複数の遊星歯車34aが枢設され、もう一端に出力歯車34bが固定され動力を動力出力装置(図示せず)に出力し、且つ各遊星歯車34aは該前減速輪32の駆動歯車32bと該切り換え歯車33の内歯に噛み合い、これにより遊星歯車減速機構を形成している。
The transmission device 3 includes an
前述の本発明の自動変速可能な動力伝送装置は、座体1の収容室11に伝送装置3及びトルクフィードバック装置2が取り付けられ、その開始状態にあって、該嵌め輪24が該圧縮バネ25の弾力作用を受けて、ピン24cが該収容室11の案内溝12の最高位置に位置し、また、該嵌め輪24のピン24cにより該切り換え歯車33の環状溝33aを拘束して、該切り換え歯車33をその上部の極限位置となしている。さらに、開始状態にあって、該推力輪22中の台形部22aがスライドリング23の台形部23aに噛み合い、且つ該推力輪22の角度位置がねじりバネ21の拘束により決定され、該スライドリング23の軸方向位置は切り換え歯車33の拘束を受けて決定される。
In the automatic transmission power transmission device of the present invention described above, the transmission device 3 and the torque feedback device 2 are attached to the
図3、4に示されるように、その動力伝送装置が運転する時、比較的大きな抵抗トルクを受ける状況にあって、該伝送装置3中の入力歯車31は徐々に該前減速輪32に入力するトルクを増加し、これにより前減速輪32中の遊星輪32aが対応する反作用力を該推力輪22の内歯車22bに及ぼし、該推力輪22を回転させようとする。しかし、該推力輪22はねじりバネ21及び該圧縮バネ25の抵抗力を克服しなければ回転できない。該圧縮バネ25の反作用弾力の発生については以下のようである。即ち、該推力輪22がその台形部22aの斜面により該スライドリング23の台形部23aの斜面を押動し、該スライドリング23を座体1の溝15のリブ23bに対する案内により軸方向に移動させ、該スライドリング23が同時に切り換え歯車33を押動して移動させ、該切り換え歯車33がその環状溝33aで嵌め輪24のピン24cを駆動し、これにより嵌め輪24が圧縮バネ25を圧縮して反作用の弾力を発生する。このような状況にあって、前減速輪32の推力輪22に及ぼすトルクがある一定量に達すると、該推力輪22の台形部22aの底端の平面がスライドリング23の台形部23aの上端の平面に接触し、最大回転角度位置を達成し、且つ切り換え歯車33が底部極限位置に到達してその底部の凹溝33bが座体1の収容室11底部のフランジに係合する。
As shown in FIGS. 3 and 4, when the power transmission device is operated, the
前述の減速機構切り換えのトルクの大きさは、適当な弾性係数のねじりバネ21及び圧縮バネ25を選択することで決定される。
The magnitude of the torque for switching the speed reduction mechanism is determined by selecting the
前述の本発明の自動変速可能な動力伝送装置は電動ドリルの動力伝送装置とされ得て、孔開け時に、小トルク出力を提供するならば、前減速輪32の該推力輪22に及ぼすトルクが該ねじりバネ21と該圧縮バネ25の抵抗力を克服できないため、推力輪22が回転せず、これによりスライドリング23と切り換え歯車33が開始状態とされて切り換え歯車33が前減速輪32と後ろ減速輪34の遊星歯車34aに同時に噛み合い、且つ切り換え歯車33が前減速輪32と後ろ減速輪34と同期に回転し、このときトルク及び回転速度の関係は効率曲線極大値の付近の区域にある。もし大トルク出力を提供するなら、該入力歯車31は徐々に入力のトルクを増し、且つ前減速輪32の推力輪22に及ぼすトルクがねじりバネ21と圧縮バネ25の抵抗力を克服し、これにより推力輪22がトルク増加に伴い回転し、最後にスライドリング23と切り換え歯車33が最低極限位置の状態とされて切り換え歯車33が前減速輪32より離脱するが、後ろ減速輪34の遊星歯車34aに噛み合い、且つ該切り換え歯車33は凹溝33bが座体1の収容室11の底部のフランジの係合を受けて回転不能とされ、この時に提供されるトルクと回転速度関係は効率曲線強大値の付近の区域中にある。
The automatic transmission power transmission device of the present invention described above can be a power transmission device for an electric drill, and if a small torque output is provided at the time of drilling, the torque exerted on the
以上は本発明を説明するための実施例の説明であり、本発明の実施範囲を限定するものではなく、本発明に基づきなしうる細部の修飾或いは改変は、いずれも本発明の請求範囲に属するものとする。 The above is description of the Example for demonstrating this invention, and does not limit the scope of the present invention, and any modification or alteration of details that can be made based on the present invention belongs to the claims of the present invention. Shall.
1 座体
11 収容室
12 案内溝
13 フランジ
14 スリット
15 溝
2 トルクフィードバック装置
21 ねじりバネ
21a 上固定端
21b 下固定端
22 推力輪
22a 台形部
22b 内歯車
22c スリット
23 スライドリング
23a 台形部
23b リブ
24 嵌め輪
24a フランジ
24b ピンシート
24c ピン
24d 溝
25 圧縮バネ
3 伝送装置
31 入力歯車
32 前減速輪
32a 遊星輪
32b 駆動歯車
33 切り換え歯車
33a 環状溝
33b 凹溝
34 後ろ減速輪
34a 遊星歯車
34b 出力歯車
1
Claims (2)
該座体は、厚さ方向に貫通する複数の案内溝を具え、該座体の内底部と外底部にそれぞれフランジが形成され、且つ該座体の内表面に上端面より軸方向に沿って延伸された複数の溝が設けられ、
該伝送装置は、内歯車構造の切り換え歯車が、第1遊星歯車セットと第2遊星歯車セットに噛み合わされて構成され、該第1遊星歯車セットが外歯車を具え、該切り換え歯車の外環周囲に周囲に内に凹んだ環状溝が形成され、該切り換え歯車の外表面底部に該座体の内底部のフランジと組み合わされる複数の凹溝が形成され、
該トルクフィードバック装置は、複数の斜面で構成された二端面が相互に噛み合う推力輪とスライドリングを具え、且つ該座体外表面のフランジに組み合わされた嵌め輪を具え、該嵌め輪により圧縮バネが該座体の外環周囲に交錯され、該スライドリングの外表面に該座体の溝に嵌入する複数のリブが設けられ、該スライドリングが該溝に沿って往復上下移動可能とされ、該嵌め輪に取り付けられた複数のピンが該座体の各案内溝中に挿入されてその制限を受け、該ピンが並びに切り換え歯車の環状溝中に挿入され、該切り換え歯車を第1極限位置に拘束して第1遊星歯車セットと第2遊星歯車セットに噛み合わせるか、或いは切り換え歯車を第2極限位置に拘束して第1遊星歯車セットのみと噛み合わせ、
前述の推力輪が回転させられる時、それが噛み合う斜面によりスライドリングを押動し、該スライドリングが切り換え歯車を制圧し並びに嵌め輪を駆動して該圧縮バネを制圧させて軸方向の抵抗力を発生させ、
該切り換え歯車が第1極限位置にある時、それは第1遊星歯車セット及び第2遊星歯車セットと同期回転し、
前述の切り換え歯車が第2極限位置にある時、その底部の凹溝が座体内底部のフランジと噛み合って回転不能とされることを特徴とする、自動変速可能な動力伝送装置。 In a power transmission device capable of automatic transmission in which a transmission device and a torque feedback device are sequentially attached in a seat formed by a hollow case,
The seat body includes a plurality of guide grooves penetrating in the thickness direction, flanges are formed on the inner bottom portion and the outer bottom portion of the seat body, respectively, and the inner surface of the seat body is formed along the axial direction from the upper end surface. A plurality of elongated grooves are provided,
The transmission device is configured such that a switching gear having an internal gear structure is meshed with a first planetary gear set and a second planetary gear set, the first planetary gear set includes an external gear, and an outer ring around the switching gear. An annular groove recessed inward is formed in the periphery, and a plurality of recessed grooves to be combined with the flange of the inner bottom portion of the seat body are formed at the bottom of the outer surface of the switching gear,
The torque feedback device includes a thrust ring formed by a plurality of inclined surfaces that mesh with each other and a slide ring, and a fitting ring that is combined with a flange on the outer surface of the seat body, and a compression spring is provided by the fitting ring. A plurality of ribs that are interlaced around the outer ring of the seat body and that are fitted into the groove of the seat body are provided on the outer surface of the slide ring, and the slide ring can be reciprocated up and down along the groove, A plurality of pins attached to the fitting ring are inserted into the guide grooves of the seat body to be restricted, and the pins are inserted into the annular groove of the switching gear, and the switching gear is set to the first extreme position. Restrain and mesh with the first planetary gear set and the second planetary gear set, or restrain the switching gear to the second limit position and mesh with only the first planetary gear set,
When the aforementioned thrust wheel is rotated, the slide ring is pushed by the slope with which it engages, and the slide ring suppresses the switching gear and drives the fitting wheel to suppress the compression spring to thereby suppress the axial resistance force. Is generated,
When the switching gear is in the first limit position, it rotates synchronously with the first planetary gear set and the second planetary gear set;
A power transmission apparatus capable of automatic transmission, wherein when the aforementioned switching gear is in the second limit position, the concave groove at the bottom thereof meshes with the flange at the bottom of the seat body so as not to rotate.
2. The power transmission device capable of automatic transmission according to claim 1, wherein the torque feedback device includes a torsion spring, one end of the torsion spring is fixed to the outer edge of the thrust wheel, and the other end is fixed to the outer edge of the seat body. A power transmission device capable of automatic transmission.
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TW092103888A TW558475B (en) | 2003-02-25 | 2003-02-25 | Power transmission device capable of automatic gear shifting |
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AU (1) | AU2003264309B2 (en) |
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JP2009297805A (en) * | 2008-06-10 | 2009-12-24 | Makita Corp | Circular saw |
JP2009297800A (en) * | 2008-06-10 | 2009-12-24 | Makita Corp | Power tool |
JP2009297804A (en) * | 2008-06-10 | 2009-12-24 | Makita Corp | Circular saw |
JP2009297799A (en) * | 2008-06-10 | 2009-12-24 | Makita Corp | Power tool |
JP2009297801A (en) * | 2008-06-10 | 2009-12-24 | Makita Corp | Power tool |
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2003
- 2003-02-25 TW TW092103888A patent/TW558475B/en not_active IP Right Cessation
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JP2009297802A (en) * | 2008-06-10 | 2009-12-24 | Makita Corp | Power tool |
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TW200300719A (en) | 2003-06-16 |
GB2399148B (en) | 2005-02-09 |
TW558475B (en) | 2003-10-21 |
AU2003264309A1 (en) | 2004-09-09 |
DE102004001251A1 (en) | 2004-09-16 |
AU2003264309B2 (en) | 2006-06-29 |
GB2399148A (en) | 2004-09-08 |
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GB0327485D0 (en) | 2003-12-31 |
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