JP2012245463A - Impact generation apparatus - Google Patents

Impact generation apparatus Download PDF

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JP2012245463A
JP2012245463A JP2011118918A JP2011118918A JP2012245463A JP 2012245463 A JP2012245463 A JP 2012245463A JP 2011118918 A JP2011118918 A JP 2011118918A JP 2011118918 A JP2011118918 A JP 2011118918A JP 2012245463 A JP2012245463 A JP 2012245463A
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power transmission
transmission member
magnet
state
rotational
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JP4834188B1 (en
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Yushi Yoneda
有志 米田
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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
    • B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
    • B25B21/026—Impact clutches

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain an impact generation apparatus which generates impact by using rotation power received from a power source efficiently.SOLUTION: The impact generation apparatus 100 includes a motor 80, power transmission members 10 and 20 and magnets 91 and 92 facing oppositely each other in the rotation radius direction. The magnets 91 and 92 are fixed to the power transmission members 10 and 20, respectively. The power transmission member 10 is composed to be able to reciprocate to the power transmission member 20 in the rotation axis direction. When an adsorption state in which the magnets 91 and 92 are adsorbed magnetically to each other and a non-adsorption state in which the magnets 91 and 92 are not adsorbed magnetically to each other are repeated alternately, by the reciprocation of the power transmission member 10 to the power transmission member 20 in the rotation axis direction, the dislocation of the position of the magnet 91 to the magnet 92 in the rotation axis direction in the non-adsorption state is greater than the dislocation in the adsorption state.

Description

本発明は、動力源からの回転動力を用いて回転方向の衝撃を発生させる衝撃発生装置に関する。   The present invention relates to an impact generator that generates an impact in a rotational direction using rotational power from a power source.

下記の特許文献１，２には、衝撃発生装置の一例として、インパクトレンチに関する発明が開示される。特許文献１の発明では、動力源からの回転動力を用いて回転方向の衝撃を発生させるために、回転半径方向に対向配置された磁石が用いられている。   Patent Documents 1 and 2 below disclose inventions related to an impact wrench as an example of an impact generator. In the invention of Patent Document 1, in order to generate an impact in the rotational direction using the rotational power from the power source, magnets arranged opposite to each other in the rotational radial direction are used.

実開平０１−０９９５７１号公報Japanese Utility Model Publication No. 01-099571 特開平０９−２７２０６６号公報Japanese Patent Laid-Open No. 09-272066

本発明は、動力源からの回転動力を用いて回転方向の衝撃を発生させるために回転半径方向に対向配置された磁石が用いられる衝撃発生装置であって、動力源から受けた回転動力を効率良く用いて衝撃を発生させる衝撃発生装置を提供することを目的とする。   The present invention relates to an impact generating device in which magnets arranged opposite to each other in the rotational radial direction are used to generate rotational impact using rotational power from a power source, and the rotational power received from the power source is efficiently used. An object of the present invention is to provide an impact generating device that is frequently used to generate an impact.

本発明に基づく衝撃発生装置は、動力源と、上記動力源からの回転動力を受けて回転する第１動力伝達部材と、上記第１動力伝達部材に固着され、上記第１動力伝達部材の回転に伴って上記第１動力伝達部材の回転方向に回転移動する第１磁石と、上記第１動力伝達部材の回転軸と同軸状に配置され、上記回転軸周り方向に回転可能に設けられた第２動力伝達部材と、上記第２動力伝達部材に固着されるとともに、上記第１動力伝達部材の回転半径方向において上記第１磁石に対向するように配置される第２磁石と、を備え、上記第１動力伝達部材は、上記回転軸方向において上記第２動力伝達部材に対して往復移動可能に構成され、上記第１磁石が上記第２磁石に磁気吸着している吸着状態においては、上記回転動力を受けた上記第１動力伝達部材の回転によって上記第１磁石は回転移動し、上記第１磁石の回転移動に伴って上記第２磁石が回転移動することによって上記第２動力伝達部材は上記第１動力伝達部材と一体的に回転し、上記第２動力伝達部材の回転を妨げるとともに上記吸着状態を解除する外部負荷が上記第２動力伝達部材に付与された状態においては、上記第１動力伝達部材は上記第２動力伝達部材に対して上記回転方向に滑るように回転し、上記吸着状態と上記第１磁石が上記第２磁石に磁気吸着していない非吸着状態とが交互に繰り返されることによって上記第２動力伝達部材には上記回転方向に作用する衝撃力が発生し、上記吸着状態および上記非吸着状態が交互に繰り返される際に上記第１動力伝達部材が上記第２動力伝達部材に対して上記回転軸方向に往復移動することによって、上記第１磁石の上記第２磁石に対する上記回転軸方向における位置は、上記吸着状態に比べて上記非吸着状態の方がずれている。   An impact generator according to the present invention includes a power source, a first power transmission member that rotates in response to rotational power from the power source, and a rotation of the first power transmission member that is fixed to the first power transmission member. Accordingly, a first magnet that rotates in the rotational direction of the first power transmission member and a first magnet that is coaxially disposed with the rotational axis of the first power transmission member and that is rotatably provided around the rotational axis. Two power transmission members, and a second magnet fixed to the second power transmission member and arranged to face the first magnet in the rotational radius direction of the first power transmission member, The first power transmission member is configured to be capable of reciprocating with respect to the second power transmission member in the direction of the rotational axis, and in the attracted state where the first magnet is magnetically attracted to the second magnet, The first power that received power The first magnet is rotated by the rotation of the reaching member, and the second power transmission member is integrated with the first power transmission member by the rotational movement of the second magnet as the first magnet rotates. And the second power transmission member is applied with an external load that prevents the second power transmission member from rotating and releases the attracted state. The second power transmission member is rotated by sliding in the rotation direction with respect to the member, and the adsorption state and the non-adsorption state in which the first magnet is not magnetically adsorbed to the second magnet are alternately repeated. When an impact force acting in the rotation direction is generated, the first power transmission member is rotated in the direction of the rotation axis with respect to the second power transmission member when the adsorption state and the non-adsorption state are alternately repeated. By reciprocating, the position in the rotation axis direction with respect to the second magnets of the first magnet, towards the non-adsorbed state as compared to the adsorption state is shifted.

本発明によれば、動力源からの回転動力を用いて回転方向の衝撃を発生させるために回転半径方向に対向配置された磁石が用いられる衝撃発生装置であって、動力源から受けた回転動力を効率良く用いて衝撃を発生させる衝撃発生装置を得ることができる。   According to the present invention, there is provided an impact generator using magnets arranged opposite to each other in the rotational radial direction in order to generate a rotational impact using rotational power from a power source, the rotational power received from the power source. It is possible to obtain an impact generating device that generates an impact by efficiently using.

実施の形態１における衝撃発生装置を示す断面図である。1 is a cross-sectional view showing an impact generator in Embodiment 1. FIG. 実施の形態１における衝撃発生装置に備えられる動力伝達部材および磁石を示す斜視図である。FIG. 3 is a perspective view showing a power transmission member and a magnet provided in the impact generating device in the first embodiment. 実施の形態１における衝撃発生装置に備えられる内側スピンドルをその回転方向に沿って仮想的に展開した状態を示す側面図である。It is a side view which shows the state which expand | deployed virtually the inner spindle with which the impact generator in Embodiment 1 was equipped along the rotation direction. 図３中のＩＶ−ＩＶ線に沿った矢視断面図である。It is arrow sectional drawing along the IV-IV line in FIG. 実施の形態１における衝撃発生装置に備えられる内側スピンドルを組み立てる際の様子を示す断面図である。FIG. 4 is a cross-sectional view showing a state when assembling an inner spindle provided in the impact generating device in the first embodiment. 実施の形態１における衝撃発生装置に備えられる回転支持体を組み立てる際の様子を示す断面図である。FIG. 3 is a cross-sectional view showing a state when assembling a rotary support provided in the impact generator in Embodiment 1. 実施の形態１における衝撃発生装置が吸着状態にある際の様子を示す断面図である。It is sectional drawing which shows a mode when the impact generator in Embodiment 1 exists in an adsorption | suction state. 実施の形態１における衝撃発生装置が非吸着状態にある際の様子を示す第１断面図である。FIG. 3 is a first cross-sectional view showing a state when the impact generator in Embodiment 1 is in a non-adsorption state. 実施の形態１における衝撃発生装置が他の非吸着状態にある際の様子を示す第１断面図である。It is a 1st sectional view showing a situation when the impact generator in Embodiment 1 is in another non-adsorption state. 実施の形態１における衝撃発生装置が非吸着状態にある際の様子を示す第２断面図である。It is a 2nd sectional view showing a situation when the impact generator in Embodiment 1 is in a non-adsorption state. 実施の形態１における衝撃発生装置が他の非吸着状態にある際の様子を示す第２断面図である。It is a 2nd sectional view showing a situation when the impact generator in Embodiment 1 is in another non-adsorption state. 実施の形態２における衝撃発生装置を示す断面図である。FIG. 6 is a cross-sectional view showing an impact generating device in a second embodiment. 実施の形態３における衝撃発生装置（吸着状態）を示す断面図である。10 is a cross-sectional view showing an impact generator (adsorption state) in Embodiment 3. FIG. 実施の形態３における衝撃発生装置に備えられる回転支持体を備える側面図である。FIG. 10 is a side view including a rotation support provided in the impact generation device according to Embodiment 3. 実施の形態３における衝撃発生装置（非吸着状態）を示す断面図である。It is sectional drawing which shows the impact generator in Embodiment 3 (non-adsorption state). 実施の形態４における衝撃発生装置（吸着状態）を示す断面図である。It is sectional drawing which shows the impact generator (adsorption state) in Embodiment 4. 実施の形態４における衝撃発生装置（非吸着状態）を示す断面図である。It is sectional drawing which shows the impact generator in Embodiment 4 (non-adsorption state).

本発明に基づいた各実施の形態について、以下、図面を参照しながら説明する。各実施の形態の説明において、同一の部品、相当部品に対しては、同一の参照番号を付し、重複する説明は繰り返さない場合がある。   Embodiments based on the present invention will be described below with reference to the drawings. In the description of each embodiment, the same parts and corresponding parts are denoted by the same reference numerals, and redundant description may not be repeated.

［実施の形態１］
（衝撃発生装置１００）
図１を参照して、本実施の形態における衝撃発生装置１００は、動力伝達部材１０（第１動力伝達部材）、動力伝達部材２０（第２動力伝達部材）、磁石９１（第１磁石）、および磁石９２（第２磁石）を備える。動力伝達部材１０、磁石９１、磁石９２、および動力伝達部材２０は、本体ケース７０に取り付けられたハンマーケース７１およびキャップ７２の内部に収容される。 [Embodiment 1]
(Impact generator 100)
Referring to FIG. 1, impact generating apparatus 100 in the present embodiment includes power transmission member 10 (first power transmission member), power transmission member 20 (second power transmission member), magnet 91 (first magnet), And a magnet 92 (second magnet). The power transmission member 10, the magnet 91, the magnet 92, and the power transmission member 20 are accommodated in a hammer case 71 and a cap 72 attached to the main body case 70.

衝撃発生装置１００は、本体ケース７０内に収容されたモータ８０（動力源）からの回転動力を、動力伝達部材１０、磁石９１、磁石９２、および動力伝達部材２０を通して、締結具７３にまで伝達する。衝撃発生装置１００は、スイッチ７４が操作されることによって、締結具７３における回転力および衝撃力を発生させることができる。   The impact generator 100 transmits the rotational power from the motor 80 (power source) accommodated in the main body case 70 to the fastener 73 through the power transmission member 10, the magnet 91, the magnet 92, and the power transmission member 20. To do. The impact generator 100 can generate a rotational force and an impact force in the fastener 73 by operating the switch 74.

図１および図２に示すように、動力伝達部材１０は、シャフト３０（第３動力伝達部材）および内側スピンドル４０（第４動力伝達部材）を含む。動力伝達部材２０は、外側スピンドル５０および回転支持体６０を含む。以下、シャフト３０、内側スピンドル４０、外側スピンドル５０、および回転支持体６０について、順に説明する。   As shown in FIGS. 1 and 2, the power transmission member 10 includes a shaft 30 (third power transmission member) and an inner spindle 40 (fourth power transmission member). The power transmission member 20 includes an outer spindle 50 and a rotation support body 60. Hereinafter, the shaft 30, the inner spindle 40, the outer spindle 50, and the rotation support body 60 will be described in order.

（シャフト３０）
図１および図２を参照して、シャフト３０は略棒状に形成され、一端３１には小径部３３が設けられ、他端３２には大径部３６が設けられる。小径部３３と大径部３６との間には、円柱部３４およびフランジ部３５が設けられる。円柱部３４の外周面３４Ｓ（図２参照）には、一端３１側から他端３２側に向かって３つのキー溝３７が延設される。３つのキー溝３７は、円柱部３４の周方向において互いに１２０°の間隔を空けて並んでいる。 (Shaft 30)
Referring to FIGS. 1 and 2, the shaft 30 is formed in a substantially rod shape, a small diameter portion 33 is provided at one end 31, and a large diameter portion 36 is provided at the other end 32. A cylindrical portion 34 and a flange portion 35 are provided between the small diameter portion 33 and the large diameter portion 36. On the outer peripheral surface 34S (see FIG. 2) of the cylindrical portion 34, three key grooves 37 are extended from the one end 31 side toward the other end 32 side. The three key grooves 37 are arranged at intervals of 120 ° in the circumferential direction of the cylindrical portion 34.

（内側スピンドル４０）
図１〜図３を参照して、内側スピンドル４０は、一端４１側に円筒部４３が設けられ、他端４２側に円筒部４５が設けられ、円筒部４３および円筒部４５の間に円筒部４４が設けられる。円筒部４４は、円筒部４３および円筒部４５に比べて大径に形成される。円筒部４３〜４５は同軸状に設けられ、円筒部４３〜４５の中心を貫通するように嵌め込み部４６（図１および図２参照）が形成される。嵌め込み部４６の形状は、上述のシャフト３０における円柱部３４の外周面３４Ｓの形状に対応している。 (Inner spindle 40)
With reference to FIGS. 1 to 3, the inner spindle 40 is provided with a cylindrical portion 43 on one end 41 side, a cylindrical portion 45 on the other end 42 side, and a cylindrical portion between the cylindrical portion 43 and the cylindrical portion 45. 44 is provided. The cylindrical portion 44 is formed with a larger diameter than the cylindrical portion 43 and the cylindrical portion 45. The cylindrical portions 43 to 45 are provided coaxially, and a fitting portion 46 (see FIGS. 1 and 2) is formed so as to penetrate the centers of the cylindrical portions 43 to 45. The shape of the fitting portion 46 corresponds to the shape of the outer peripheral surface 34 </ b> S of the cylindrical portion 34 in the shaft 30 described above.

図１，図２および図４を参照して、嵌め込み部４６には９つ（図２参照）の取付凹部４９が設けられる。取付凹部４９は、３つが一組となって内側スピンドル４０の軸方向に沿うように配置されるとともに、３つで一組の取付凹部４９は、嵌め込み部４６の内周方向に沿って互いに１２０°の間隔を空けて並んでいる。９つの取付凹部４９のそれぞれには、キー４７が１つずつ固着される。キー４７の位置は、上述のシャフト３０におけるキー溝３７の位置に対応している。１つのキー溝３７に対して、３つのキー４７が摺接可能に配置される。   With reference to FIGS. 1, 2, and 4, nine fitting recesses 49 (see FIG. 2) are provided in the fitting portion 46. The three mounting recesses 49 are arranged along the axial direction of the inner spindle 40 as a set of three, and the three mounting recesses 49 are 120 along each other along the inner circumferential direction of the fitting portion 46. Lined up at an interval of °. One key 47 is fixed to each of the nine mounting recesses 49. The position of the key 47 corresponds to the position of the key groove 37 in the shaft 30 described above. Three keys 47 are slidably arranged with respect to one key groove 37.

図３〜図５を参照して、円筒部４４には、外周面４４Ｓから嵌め込み部４６に向かって貫通する貫通孔９３が設けられているとよい。貫通孔９３を通して、キー４７は取付凹部４９に対して容易に取り付けられることができる（図５中の矢印ＡＲ４７参照）。   With reference to FIGS. 3 to 5, the cylindrical portion 44 may be provided with a through-hole 93 that penetrates from the outer peripheral surface 44 </ b> S toward the fitting portion 46. Through the through hole 93, the key 47 can be easily attached to the attachment recess 49 (see arrow AR47 in FIG. 5).

図１〜図４を参照して、円筒部４４の外周面４４Ｓ上には、１２個の磁石９１が埋設固定される。磁石９１は、２つが一組となって内側スピンドル４０の軸方向に沿うように配置されるとともに、２つで一組の磁石９１は、円筒部４４の周方向に沿って互いに６０°の間隔を空けて並んでいる（図４参照）。図４に示すように、順に並んで配置された３つの磁石９１（９１ａ〜９１ｃ）は、外周面４４Ｓ上においてＳ極を形成するように設けられる。順に並んで配置された３つの磁石９１（９１ｄ〜９１ｆ）は、外周面４４Ｓ上においてＮ極を形成するように設けられる。   1 to 4, twelve magnets 91 are embedded and fixed on the outer peripheral surface 44 </ b> S of the cylindrical portion 44. The two magnets 91 are arranged in pairs so as to be along the axial direction of the inner spindle 40, and the two magnets 91 are spaced apart from each other by 60 ° along the circumferential direction of the cylindrical portion 44. Are lined up (see FIG. 4). As shown in FIG. 4, the three magnets 91 (91a to 91c) arranged side by side are provided so as to form an S pole on the outer peripheral surface 44S. Three magnets 91 (91d to 91f) arranged side by side are provided so as to form an N pole on the outer peripheral surface 44S.

図２，図３および図５を参照して、円筒部４５の外周面４５Ｓには、内側スピンドル４０の回転軸周り方向において環状に形成された連続溝４８（第１嵌合部）が設けられる。連続溝４８は、内側スピンドル４０の回転軸方向（図３紙面上下方向、図５紙面左右方向）における位置が互いに異なる溝部４８Ａ（非吸着状態形成部）、溝部４８Ｂ（非吸着状態形成部）、および溝部４８Ｃ（吸着状態形成部）を含む。溝部４８Ａおよび溝部４８Ｃは、円筒部４５の周方向に沿って設けられ、溝部４８Ｂは、溝部４８Ａおよび溝部４８Ｃの間を接続するように、回転軸方向に対して傾斜して設けられる。   With reference to FIGS. 2, 3, and 5, a continuous groove 48 (first fitting portion) formed in an annular shape in the direction around the rotation axis of the inner spindle 40 is provided on the outer peripheral surface 45 </ b> S of the cylindrical portion 45. . The continuous groove 48 includes a groove portion 48A (non-adsorption state forming portion), a groove portion 48B (non-adsorption state formation portion), and positions different from each other in the rotation axis direction of the inner spindle 40 (the vertical direction in FIG. 3 and the horizontal direction in FIG. 5), And a groove portion 48C (adsorption state forming portion). The groove portion 48A and the groove portion 48C are provided along the circumferential direction of the cylindrical portion 45, and the groove portion 48B is provided inclined with respect to the rotation axis direction so as to connect between the groove portion 48A and the groove portion 48C.

（外側スピンドル５０）
図１および図２を再び参照して、外側スピンドル５０は、一端５１側に取付部５３が設けられ、他端５２側に円筒部５４が設けられる。取付部５３に、締結具７３（図１参照）が取り付けられる。円筒部５４の内周面５６における内径は、上述の内側スピンドル４０の外周面４４Ｓにおける外径に比べてわずかに大きく形成される。 (Outer spindle 50)
Referring to FIGS. 1 and 2 again, the outer spindle 50 is provided with a mounting portion 53 on one end 51 side and a cylindrical portion 54 on the other end 52 side. A fastener 73 (see FIG. 1) is attached to the attachment portion 53. The inner diameter of the inner peripheral surface 56 of the cylindrical portion 54 is slightly larger than the outer diameter of the outer peripheral surface 44S of the inner spindle 40 described above.

円筒部５４には、外周面５４Ｓから内周面５６に向かって貫通する１２個の貫通孔５５が設けられる。貫通孔５５は、２つが一組となって外側スピンドル５０の軸方向に沿うように配置されるとともに、２つで一組の貫通孔５５は、円筒部５４の周方向に沿って互いに６０°の間隔を空けて並んでいる（図２および図７参照）。１２個の貫通孔５５のそれぞれには、磁石９２が１つずつ固着される。磁石９２の位置は、上述の内側スピンドル４０に固着される磁石９１の位置に対応している。１つの磁石９１に対して１つの磁石９２が、回転半径方向における内側スピンドル４０の外側において対向可能に配置される。   The cylindrical portion 54 is provided with twelve through holes 55 penetrating from the outer peripheral surface 54S toward the inner peripheral surface 56. The two through-holes 55 are arranged as a pair along the axial direction of the outer spindle 50, and the two sets of through-holes 55 are 60 ° along the circumferential direction of the cylindrical portion 54. (See FIGS. 2 and 7). One magnet 92 is fixed to each of the twelve through holes 55. The position of the magnet 92 corresponds to the position of the magnet 91 fixed to the inner spindle 40 described above. One magnet 92 is arranged to be opposed to one magnet 91 on the outer side of the inner spindle 40 in the rotational radius direction.

順に並んで配置された３つの磁石９２（図７における磁石９２（９２ａ〜９２ｃ）参照）は、内周面５６上においてＮ極を形成するように設けられる。順に並んで配置された３つの磁石９２（図７における磁石９２（９２ｄ〜９２ｆ）参照）は、内周面５６上においてＳ極を形成するように設けられる。   Three magnets 92 (see magnets 92 (92a to 92c) in FIG. 7) arranged in order are provided so as to form an N pole on the inner peripheral surface 56. Three magnets 92 (see magnets 92 (92d to 92f) in FIG. 7) arranged in order are provided so as to form an S pole on the inner peripheral surface 56.

（回転支持体６０）
図１、図２および図６を参照して、回転支持体６０は、一端６１側に円筒部６３が設けられ、他端６２側に円筒部６５が設けられ、円筒部６３および円筒部６５の間にフランジ部６４が設けられる。円筒部６３、フランジ部６４、および円筒部６５の中心を貫通するように、開口部６６が形成される。円筒部６３には、外周面６３Ｓから開口部６６に向かって貫通する貫通孔６７が設けられる。貫通孔６７には、球体６９（第２嵌合部）が取り付けられた台座６８が嵌め込まれる（図２および図６における矢印ＡＲ２参照）。 (Rotating support 60)
With reference to FIGS. 1, 2, and 6, the rotary support 60 is provided with a cylindrical portion 63 on one end 61 side and a cylindrical portion 65 on the other end 62 side. A flange portion 64 is provided therebetween. An opening 66 is formed so as to penetrate through the centers of the cylindrical portion 63, the flange portion 64, and the cylindrical portion 65. The cylindrical portion 63 is provided with a through hole 67 that penetrates from the outer peripheral surface 63 </ b> S toward the opening 66. A pedestal 68 to which a sphere 69 (second fitting portion) is attached is fitted into the through hole 67 (see arrow AR2 in FIGS. 2 and 6).

（衝撃発生装置１００の組立て）
図１を参照して、衝撃発生装置１００が組み立てられる際には、まず、ボルト（図示せず）などを使用して本体ケース７０にハンマーケース７１が取り付けられる。ハンマーケース７１の内部に設けられたベアリング８４の内側を通過させつつ、シャフト３０をモータ８０の動力軸に取り付ける。 (Assembly of impact generator 100)
Referring to FIG. 1, when assembling impact generating device 100, first, hammer case 71 is attached to main body case 70 using a bolt (not shown) or the like. The shaft 30 is attached to the power shaft of the motor 80 while passing through the inside of the bearing 84 provided inside the hammer case 71.

図２を参照して、次に、台座６８および球体６９が貫通孔６７から取り外された状態（図２に示す状態）の回転支持体６０が準備される。内側スピンドル４０の他端４２側に、この回転支持体６０が取り付けられる（矢印ＡＲ１参照）。この状態で、球体６９が内側スピンドル４０の連続溝４８に嵌合するように、台座６８が貫通孔６７に嵌め込まれる（矢印ＡＲ２および図６参照）。   Referring to FIG. 2, next, a rotation support body 60 in a state where the pedestal 68 and the sphere 69 are removed from the through hole 67 (the state shown in FIG. 2) is prepared. This rotation support body 60 is attached to the other end 42 side of the inner spindle 40 (see arrow AR1). In this state, the pedestal 68 is fitted into the through hole 67 so that the sphere 69 fits into the continuous groove 48 of the inner spindle 40 (see arrow AR2 and FIG. 6).

その後、内側スピンドル４０および回転支持体６０は、外側スピンドル５０の他端５２側から外側スピンドル５０の内部に嵌め込まれる（矢印ＡＲ３参照）。回転支持体６０のフランジ部６４と外側スピンドル５０の他端５２とは、ボルト（図示せず）などによって互いに固定される（図１参照）。外側スピンドル５０および回転支持体６０が一体化されることによって、動力伝達部材２０が得られる。   Thereafter, the inner spindle 40 and the rotation support body 60 are fitted into the outer spindle 50 from the other end 52 side of the outer spindle 50 (see arrow AR3). The flange portion 64 of the rotary support 60 and the other end 52 of the outer spindle 50 are fixed to each other by a bolt (not shown) or the like (see FIG. 1). The power transmission member 20 is obtained by integrating the outer spindle 50 and the rotary support 60.

図１を参照して、互いに組み立てられた内側スピンドル４０、外側スピンドル５０、および回転支持体６０は、モータ８０に固定されたシャフト３０に嵌め込まれる（図２における矢印ＡＲ４参照）。キー溝３７およびキー４７同士が摺接係合することによって、シャフト３０および内側スピンドル４０を含む動力伝達部材１０が得られる。キー溝３７およびキー４７の作用によって、嵌め込み部４６とシャフト３０とは互いに嵌合している。内側スピンドル４０は、嵌め込み部４６がシャフト３０に嵌合した状態で、シャフト３０に対して回転軸方向（図１紙面左右方向）に往復移動可能となっている。   Referring to FIG. 1, the inner spindle 40, the outer spindle 50, and the rotary support 60 that are assembled together are fitted into a shaft 30 that is fixed to a motor 80 (see arrow AR <b> 4 in FIG. 2). When the key groove 37 and the key 47 are in sliding contact with each other, the power transmission member 10 including the shaft 30 and the inner spindle 40 is obtained. The fitting portion 46 and the shaft 30 are fitted to each other by the action of the key groove 37 and the key 47. The inner spindle 40 can reciprocate in the rotation axis direction (left and right direction in FIG. 1) with respect to the shaft 30 in a state where the fitting portion 46 is fitted to the shaft 30.

回転支持体６０の円筒部６５は、ハンマーケース７１の内部に設けられたベアリング８３の内側に配置される。シャフト３０の小径部３３は、外側スピンドル５０の内部に設けられたベアリング８１の内側に配置される。その後、ベアリング８２を有するキャップ７２がハンマーケース７１に取り付けられる。外側スピンドル５０の一端５１側が、ベアリング８２の内側に配置される。最後に、外側スピンドル５０の一端５１に締結具７３が取り付けられる。   The cylindrical portion 65 of the rotary support 60 is disposed inside a bearing 83 provided in the hammer case 71. The small diameter portion 33 of the shaft 30 is disposed inside a bearing 81 provided inside the outer spindle 50. Thereafter, a cap 72 having a bearing 82 is attached to the hammer case 71. One end 51 side of the outer spindle 50 is disposed inside the bearing 82. Finally, a fastener 73 is attached to one end 51 of the outer spindle 50.

衝撃発生装置１００が組み立てられた状態においては、動力伝達部材１０および動力伝達部材２０は互いに同軸状に配置される。シャフト３０は、ベアリング８１，８４によって回転可能に支持される。シャフト３０の動力伝達部材２０に対する回転軸方向における移動は固定されている。互いに一体化された外側スピンドル５０および回転支持体６０は、ベアリング８２，８３によって回転可能に支持される。   In a state where the impact generator 100 is assembled, the power transmission member 10 and the power transmission member 20 are arranged coaxially with each other. The shaft 30 is rotatably supported by bearings 81 and 84. The movement of the shaft 30 in the direction of the rotation axis with respect to the power transmission member 20 is fixed. The outer spindle 50 and the rotary support 60 integrated with each other are rotatably supported by bearings 82 and 83.

上述のとおり、動力伝達部材１０の内側スピンドル４０は、回転軸方向（図１紙面左右方向）において動力伝達部材２０に対して往復移動可能に構成される（詳細は動作については次述する）。磁石９１および磁石９２は、動力伝達部材１０の回転半径方向（図１紙面上下方向）において対向配置される。   As described above, the inner spindle 40 of the power transmission member 10 is configured to be capable of reciprocating with respect to the power transmission member 20 in the rotation axis direction (left and right direction in FIG. 1) (details of the operation will be described below). The magnet 91 and the magnet 92 are arranged to face each other in the rotational radius direction of the power transmission member 10 (the vertical direction in FIG. 1).

（衝撃発生装置１００の動作）
図７を参照して、シャフト３０は、モータ８０（図１参照）からの回転動力を受けることによって回転する。内側スピンドル４０は、キー４７およびキー溝３７同士の嵌合によって、シャフト３０とともに矢印ＤＲ１０方向に回転する。内側スピンドル４０に固着された磁石９１（９１ａ〜９１ｆ）も、内側スピンドル４０の回転に伴って内側スピンドル４０の回転方向（矢印ＤＲ１０方向）に回転移動する。 (Operation of the impact generator 100)
Referring to FIG. 7, shaft 30 rotates by receiving rotational power from motor 80 (see FIG. 1). The inner spindle 40 rotates in the direction of the arrow DR10 together with the shaft 30 by fitting the key 47 and the key groove 37 to each other. The magnets 91 (91a to 91f) fixed to the inner spindle 40 also rotate in the rotation direction of the inner spindle 40 (arrow DR10 direction) as the inner spindle 40 rotates.

（吸着状態Ｓ１）
図７に示すように、磁石９１（９１ａ〜９１ｆ）のすべてが、磁石９２（９２ａ〜９２ｆ）のすべてに磁気吸着（カップリング）している状態にあるとする（この状態を、吸着状態Ｓ１とする）。動力伝達部材１０の回転によって磁石９１が回転移動するとともに、磁石９１の回転移動に伴って磁石９２が回転移動する。動力伝達部材２０は、動力伝達部材１０と一体的に矢印ＤＲ２０方向に回転する。動力伝達部材２０の回転は、締結具７３（図１参照）に伝達される。こうして、締結具７３における回転力が得られる。 (Adsorption state S1)
As shown in FIG. 7, it is assumed that all of the magnets 91 (91a to 91f) are magnetically attracted (coupled) to all of the magnets 92 (92a to 92f) (this state is referred to as an attracted state S1). And). While the power transmission member 10 rotates, the magnet 91 rotates and the magnet 92 rotates as the magnet 91 rotates. The power transmission member 20 rotates integrally with the power transmission member 10 in the direction of the arrow DR20. The rotation of the power transmission member 20 is transmitted to the fastener 73 (see FIG. 1). Thus, the rotational force in the fastener 73 is obtained.

（非吸着状態Ｓ２ａ，Ｓ２ｂ）
図８を参照して、たとえば締結具７３（図１参照）を利用してボルトまたはナットなどを締結するとする。締結の完了間近の状況においては、動力伝達部材２０の回転を妨げる強い外部負荷（モータ８０の回転動力に対して相対的に作用する負荷）が、動力伝達部材２０に付与される。この外部負荷が吸着状態Ｓ１（図７参照）を解除する値以上となった場合、動力伝達部材１０は動力伝達部材２０に対して回転方向（矢印ＤＲ１０ａ方向）に滑るように回転する。図８は、動力伝達部材２０に対して動力伝達部材１０が６０°回転した様子を示している。衝撃発生装置１００は、磁石９１および磁石９２同士の一部が磁気吸着していない非吸着状態Ｓ２ａとなる。 (Non-adsorption state S2a, S2b)
Referring to FIG. 8, it is assumed that a bolt or a nut is fastened using a fastener 73 (see FIG. 1), for example. In a situation near the completion of the fastening, a strong external load (a load acting relatively to the rotational power of the motor 80) that impedes the rotation of the power transmission member 20 is applied to the power transmission member 20. When the external load becomes equal to or greater than the value for releasing the adsorption state S1 (see FIG. 7), the power transmission member 10 rotates so as to slide in the rotational direction (arrow DR10a direction) with respect to the power transmission member 20. FIG. 8 shows a state where the power transmission member 10 is rotated by 60 ° with respect to the power transmission member 20. The impact generator 100 is in a non-adsorption state S2a in which some of the magnets 91 and 92 are not magnetically adsorbed.

図９を参照して、動力伝達部材２０に付与される外部負荷がさらに増大すると、動力伝達部材１０は動力伝達部材２０に対して回転方向（矢印ＤＲ１０ｂ方向）に滑るようにさらに回転する。図９に示すように、衝撃発生装置１００は、磁石９１および磁石９２の全部が磁気吸着していない非吸着状態Ｓ２ｂとなる。   Referring to FIG. 9, when the external load applied to power transmission member 20 further increases, power transmission member 10 further rotates so as to slide with respect to power transmission member 20 in the rotational direction (the direction of arrow DR10b). As shown in FIG. 9, the impact generator 100 is in a non-adsorption state S2b where all of the magnets 91 and 92 are not magnetically adsorbed.

非吸着状態Ｓ２ｂの後、動力伝達部材１０がモータ８０（図１参照）からさらなる回転動力を受けることによって、磁石９１および磁石９２は、この状態を峠として互いに吸着および反発する方向に作用する。動力伝達部材１０は動力伝達部材２０に対して急峻に回転する。衝撃発生装置１００が再び吸着状態Ｓ１（図７参照）となった瞬間に、動力伝達部材２０には回転方向に作用する強い衝撃力が発生する。吸着状態Ｓ１および非吸着状態Ｓ２ａ，Ｓ２ｂが交互に繰り返されることによって、ボルトまたはナットなどの一層の増し締めが可能となる。   After the non-adsorption state S2b, the power transmission member 10 receives further rotational power from the motor 80 (see FIG. 1), so that the magnet 91 and the magnet 92 act in a direction to attract and repel each other with this state as a trap. The power transmission member 10 rotates sharply with respect to the power transmission member 20. At the moment when the impact generator 100 is again in the attracted state S1 (see FIG. 7), a strong impact force acting in the rotational direction is generated on the power transmission member 20. By alternately repeating the adsorption state S1 and the non-adsorption states S2a and S2b, further tightening of bolts or nuts becomes possible.

図１０を参照して、ここで、衝撃発生装置１００が非吸着状態Ｓ２ａにある際には、内側スピンドル４０（動力伝達部材１０）に設けられた連続溝４８の球体６９（動力伝達部材２０）に対する回転方向の位相がずれる。吸着状態Ｓ１では、球体６９は溝部４８Ｃ（図３参照）内に配置されていたが、非吸着状態Ｓ２ａでは、球体６９は溝部４８Ｂ（図３参照）内に配置される。溝部４８Ｂは、内側スピンドル４０の回転軸方向に対して傾斜しているため、連続溝４８は球体６９に摺接しつつ、内側スピンドル４０（動力伝達部材１０）は動力伝達部材２０に対して矢印ＤＲ４０ａ方向に変位する（ずれる）。   Referring to FIG. 10, when the impact generator 100 is in the non-adsorption state S <b> 2 a, the sphere 69 (power transmission member 20) of the continuous groove 48 provided in the inner spindle 40 (power transmission member 10). The phase of the rotation direction is shifted from In the adsorption state S1, the sphere 69 is disposed in the groove 48C (see FIG. 3), but in the non-adsorption state S2a, the sphere 69 is disposed in the groove 48B (see FIG. 3). Since the groove portion 48B is inclined with respect to the direction of the rotation axis of the inner spindle 40, the continuous groove 48 is in sliding contact with the sphere 69, while the inner spindle 40 (power transmission member 10) is an arrow DR40a with respect to the power transmission member 20. Displace (shift) in the direction.

結果として、磁石９１の磁石９２に対する回転軸方向における位置は、吸着状態Ｓ１に比べて非吸着状態Ｓ２ａの方が図１０紙面右方向にずれることとなる。磁石９１および磁石９２同士の対向面積は、回転方向だけでなく回転軸方向においても減少する。動力伝達部材１０が動力伝達部材２０に対して回転する際（吸着状態Ｓ１から非吸着状態Ｓ２ａに遷移する際）、磁石９１が磁石９２から受ける吸着力は急峻に減衰する。モータ８０からの回転動力によって動力伝達部材１０が回転する際（動力伝達部材１０が動力伝達部材２０に対して回転する際）、磁石９１の磁石９２から受ける吸着力が減衰することによって、動力伝達部材１０は効率良く回転することが可能となる。   As a result, the position of the magnet 91 in the rotation axis direction with respect to the magnet 92 is shifted in the right direction in FIG. 10 in the non-adsorption state S2a as compared to the adsorption state S1. The facing area between the magnet 91 and the magnet 92 decreases not only in the rotation direction but also in the rotation axis direction. When the power transmission member 10 rotates with respect to the power transmission member 20 (when transitioning from the attracted state S1 to the non-adsorbed state S2a), the attracting force that the magnet 91 receives from the magnet 92 abruptly attenuates. When the power transmission member 10 is rotated by the rotational power from the motor 80 (when the power transmission member 10 rotates with respect to the power transmission member 20), the attraction force received from the magnet 92 of the magnet 91 is attenuated, thereby transmitting the power. The member 10 can be efficiently rotated.

図１１を参照して、連続溝４８が球体６９に摺接し、球体６９が溝部４８Ａ（図３参照）内に配置されることによって、衝撃発生装置１００は非吸着状態Ｓ２ｂに遷移する。磁石９１および磁石９２は、回転軸方向に最もずれた状態となる。衝撃発生装置１００が非吸着状態Ｓ２ｂおよび非吸着状態Ｓ２ａを通して吸着状態Ｓ１に戻る際には、上記と逆の動作が行なわれる。この際、上述のとおり、動力伝達部材２０には回転方向に作用する強い衝撃力が発生することとなる。   Referring to FIG. 11, the continuous groove 48 is in sliding contact with the sphere 69, and the sphere 69 is disposed in the groove 48 </ b> A (see FIG. 3), whereby the impact generating device 100 transitions to the non-adsorption state S <b> 2 b. The magnet 91 and the magnet 92 are in the most shifted state in the rotation axis direction. When the impact generator 100 returns to the adsorption state S1 through the non-adsorption state S2b and the non-adsorption state S2a, the reverse operation is performed. At this time, as described above, a strong impact force acting in the rotational direction is generated on the power transmission member 20.

（作用・効果）
衝撃発生装置１００によれば、吸着状態Ｓ１および非吸着状態Ｓ２ａ，Ｓ２ｂが交互に繰り返される際に、動力伝達部材１０は、動力伝達部材２０に対して回転軸方向（図１０における矢印ＤＲ４０ａ方向およびその反対方向）に往復移動する。磁石９１の磁石９２に対する回転軸方向における位置は、吸着状態Ｓ１に比べて非吸着状態Ｓ２ａ，Ｓ２ｂの方がずれることとなる。したがって衝撃発生装置１００によれば、モータ８０から受けた回転動力を効率良く用いて衝撃を発生させることが可能となる。 (Action / Effect)
According to the impact generator 100, when the adsorption state S1 and the non-adsorption states S2a and S2b are alternately repeated, the power transmission member 10 moves in the rotational axis direction (the direction of the arrow DR40a in FIG. Reciprocate in the opposite direction). The position of the magnet 91 in the rotation axis direction with respect to the magnet 92 is shifted in the non-adsorption state S2a and S2b compared to the adsorption state S1. Therefore, according to the impact generator 100, it is possible to generate an impact by efficiently using the rotational power received from the motor 80.

また、モータ８０からの回転動力は、磁石９１および磁石９２同士による非接触の磁気結合によって、動力伝達部材１０および動力伝達部材２０を通して締結具７３に伝達されて衝撃力に変換される。所定の外部負荷が動力伝達部材２０に作用した際に、非接触の磁気結合によれば、磁石９１および磁石９２同士が適切に滑ることによって、機械的な接触に比べて使用者の手首などにかかる負担を緩和することができる。   Further, the rotational power from the motor 80 is transmitted to the fastener 73 through the power transmission member 10 and the power transmission member 20 and converted into an impact force by non-contact magnetic coupling between the magnet 91 and the magnet 92. When a predetermined external load is applied to the power transmission member 20, the non-contact magnetic coupling causes the magnet 91 and the magnet 92 to slide appropriately, so that the user's wrist or the like is compared with mechanical contact. This burden can be eased.

また、本実施の形態における衝撃発生装置１００によれば、動力伝達部材１０を構成するシャフト３０および内側スピンドル４０が、互いに別体として組み立てられる。衝撃力を発生させる際、内側スピンドル４０のみが、シャフト３０（および動力伝達部材２０）に対して回転軸方向に往復移動する。衝撃発生装置１００は、この点においても、使用者の手首などにかかる負担を緩和することができる。   Moreover, according to the impact generator 100 in the present embodiment, the shaft 30 and the inner spindle 40 constituting the power transmission member 10 are assembled as separate bodies. When the impact force is generated, only the inner spindle 40 reciprocates in the rotation axis direction with respect to the shaft 30 (and the power transmission member 20). Also in this respect, the impact generating device 100 can relieve the burden on the user's wrist and the like.

［実施の形態２］
図１２を参照して、本実施の形態における衝撃発生装置１０１においては、動力伝達部材２０が、外側スピンドル５０Ａおよび回転支持体６０Ａを含む。外側スピンドル５０Ａの他端５２には、リングナット５０Ｍが設けられる。回転支持体６０Ａの円筒部６５の外周面６５Ｓには、リングナット５０Ｍに螺合するネジきり加工が設けられる。 [Embodiment 2]
Referring to FIG. 12, in impact generation device 101 in the present embodiment, power transmission member 20 includes an outer spindle 50A and a rotation support body 60A. A ring nut 50M is provided at the other end 52 of the outer spindle 50A. The outer peripheral surface 65S of the cylindrical portion 65 of the rotary support 60A is provided with a threading process that is screwed into the ring nut 50M.

リングナット５０Ｍを回転させることによって、回転支持体６０Ａを矢印ＡＲ方向に変位させることができる。回転支持体６０Ａの変位によって球体６９も移動するため、球体６９の連続溝４８に対する位置関係も変化する。動力伝達部材１０が動力伝達部材２０に対して回転する際における、磁石９１および磁石９２同士の対向面積の変化量を増減させることが可能となる。衝撃発生装置１０１によれば、締結具７３（図１参照）におけるトルク調整が可能となる。   The rotation support 60A can be displaced in the direction of the arrow AR by rotating the ring nut 50M. Since the sphere 69 also moves due to the displacement of the rotary support 60A, the positional relationship of the sphere 69 with respect to the continuous groove 48 also changes. When the power transmission member 10 rotates with respect to the power transmission member 20, the amount of change in the facing area between the magnet 91 and the magnet 92 can be increased or decreased. According to the impact generator 101, torque adjustment in the fastener 73 (see FIG. 1) is possible.

［実施の形態３］
上述の実施の形態１，２の衝撃発生装置１００，１０１においては、いわゆるボール溝方式によって、動力伝達部材１０（内側スピンドル４０）は動力伝達部材２０に対して往復移動される。本実施の形態における衝撃発生装置１０２においては、いわゆるカム方式によって、動力伝達部材１０（内側スピンドル４０Ｂ）は動力伝達部材２０に対して往復移動される。以下、具体的に説明する。 [Embodiment 3]
In the impact generators 100 and 101 according to the first and second embodiments described above, the power transmission member 10 (inner spindle 40) is reciprocated relative to the power transmission member 20 by a so-called ball groove method. In the impact generator 102 in the present embodiment, the power transmission member 10 (inner spindle 40B) is reciprocated relative to the power transmission member 20 by a so-called cam system. This will be specifically described below.

図１３を参照して、動力伝達部材１０は、シャフト３０Ｂおよび内側スピンドル４０Ｂを含む。シャフト３０Ｂは、上述の実施の形態１，２におけるシャフト３０と略同様に構成される。内側スピンドル４０Ｂは、バネ９８によって他端４２側に付勢される。円筒部４４の他端４２側には、台座９５が設けられる。台座９５の回転支持体６０Ｂ側には、球体９４が設けられる。動力伝達部材２０は、外側スピンドル５０Ｂおよび回転支持体６０Ｂを含む。外側スピンドル５０Ｂは、上述の実施の形態１，２における外側スピンドル５０，５０Ａと略同様に構成される。   Referring to FIG. 13, power transmission member 10 includes a shaft 30B and an inner spindle 40B. Shaft 30B is configured in substantially the same manner as shaft 30 in the first and second embodiments. The inner spindle 40B is biased toward the other end 42 by a spring 98. A pedestal 95 is provided on the other end 42 side of the cylindrical portion 44. A sphere 94 is provided on the pedestal 95 on the rotation support body 60B side. The power transmission member 20 includes an outer spindle 50B and a rotary support 60B. The outer spindle 50B is configured in substantially the same manner as the outer spindles 50 and 50A in the first and second embodiments.

図１３および図１４を参照して、回転支持体６０Ｂは、一端６１側に、凸部９６および凹部９７によって構成されるカム機構が設けられる。図１３に示すように、吸着状態Ｓ１においては、球体９４は凸部９６に当接している。この状態で、動力伝達部材１０および動力伝達部材２０は互いに一体となって回転する。   With reference to FIG. 13 and FIG. 14, the rotary support 60 </ b> B is provided with a cam mechanism including a convex portion 96 and a concave portion 97 on the one end 61 side. As shown in FIG. 13, the sphere 94 is in contact with the convex portion 96 in the suction state S <b> 1. In this state, the power transmission member 10 and the power transmission member 20 rotate integrally with each other.

図１５を参照して、非吸着状態Ｓ２においては、動力伝達部材１０が動力伝達部材２０に対して回転する際、内側スピンドル４０Ｂは、バネ９８による付勢およびカム機構の作用によって、図１５紙面右方向に変位する（球体９４が凹部９７に落ち込む）。このように、いわゆるカム方式によって、動力伝達部材１０が動力伝達部材２０に対して回転軸方向に往復移動されるように構成されてもよい。   Referring to FIG. 15, in the non-adsorption state S <b> 2, when the power transmission member 10 rotates with respect to the power transmission member 20, the inner spindle 40 </ b> B is biased by the spring 98 and the cam mechanism acts to Displaces to the right (the sphere 94 falls into the recess 97). Thus, the power transmission member 10 may be configured to reciprocate in the direction of the rotation axis with respect to the power transmission member 20 by a so-called cam system.

［実施の形態４］
上述の実施の形態１〜３においては、磁石９１および磁石９２がそれぞれ複数設けられる。本実施の形態における衝撃発生装置においては、磁石９１および磁石９２が一つずつ設けられる。 [Embodiment 4]
In the above-described first to third embodiments, a plurality of magnets 91 and a plurality of magnets 92 are provided. In the impact generator in the present embodiment, one magnet 91 and one magnet 92 are provided.

図１６を参照して、シャフト３０Ｄおよび内側スピンドル４０Ｄを含む動力伝達部材１０には、１つの磁石９１が設けられる。動力伝達部材２０を構成する外側スピンドル５０Ｄにも、１つの磁石９２が設けられる。吸着状態Ｓ１においては、動力伝達部材１０および動力伝達部材２０は一体となって回転する。   Referring to FIG. 16, one magnet 91 is provided in power transmission member 10 including shaft 30 </ b> D and inner spindle 40 </ b> D. One magnet 92 is also provided on the outer spindle 50D constituting the power transmission member 20. In the suction state S1, the power transmission member 10 and the power transmission member 20 rotate together.

図１７を参照して、非吸着状態Ｓ２においては、動力伝達部材１０が、動力伝達部材２０に対して矢印ＤＲ１０ａ方向に回転する。磁石９１および磁石９２の長さが図示するように回転方向に比較的長い場合には、領域ＲＲにおいて、磁石９１および磁石９２同士の間に吸着力が発生する。したがって、磁石９１および磁石９２同士の間に発生する吸着力を減衰させるために、上述の実施の形態１〜３と同様に、動力伝達部材１０が、動力伝達部材２０に対して回転軸方向（図１７紙面垂直方向）にずらされる。当該構成によっても、磁石９１が磁石９２から受ける吸着力が減衰することによって、動力伝達部材１０は効率良く回転することが可能となる。   Referring to FIG. 17, in non-adsorption state S <b> 2, power transmission member 10 rotates in the direction of arrow DR <b> 10 a with respect to power transmission member 20. When the lengths of the magnet 91 and the magnet 92 are relatively long in the rotational direction as shown in the drawing, an attractive force is generated between the magnet 91 and the magnet 92 in the region RR. Therefore, in order to attenuate the attractive force generated between the magnet 91 and the magnet 92, the power transmission member 10 is in the direction of the rotation axis (with respect to the power transmission member 20) in the same manner as in the first to third embodiments. FIG. 17 is shifted in the direction perpendicular to the paper surface. Also with this configuration, the power transmission member 10 can be efficiently rotated by attenuating the attractive force that the magnet 91 receives from the magnet 92.

なお、実施の形態１〜３のように、磁石９１および磁石９２の長さが回転方向に比較的短く且つ回転方向に沿って複数設けられる場合には、磁石９１が磁石９２に対して回転すると、磁石９１は、すぐさま円筒部５４の内周面５６に対向し、磁石９２からは対向しなくなる。磁石９１に対する磁石９２の吸引によって動力伝達部材１０の回転が妨げられにくいため、モータ８０（図１参照）から受けた回転動力を効率良く用いて衝撃を発生させることが可能となる。   When the length of the magnet 91 and the magnet 92 is relatively short in the rotation direction and a plurality of the magnets 91 are provided along the rotation direction as in the first to third embodiments, the magnet 91 rotates with respect to the magnet 92. The magnet 91 immediately faces the inner peripheral surface 56 of the cylindrical portion 54 and does not face the magnet 92. Since the rotation of the power transmission member 10 is hardly hindered by the attraction of the magnet 92 with respect to the magnet 91, it is possible to generate an impact by efficiently using the rotational power received from the motor 80 (see FIG. 1).

以上、本発明に基づいた各実施の形態について説明したが、今回開示された各実施の形態はすべての点で例示であって制限的なものではない。たとえば、シャフト３０および内側スピンドル４０は一体的に構成されていてもよい。この場合であっても、動力伝達部材１０が動力伝達部材２０に対して回転軸方向に移動するため、磁石９１が磁石９２から受ける吸着力が減衰することによって、動力伝達部材１０は効率良く回転することが可能となり、モータ８０（図１参照）から受けた回転動力を効率良く用いて衝撃を発生させることが可能となる。また、動力伝達部材１０（入力側）が外側に配置され、動力伝達部材２０（出力側）が内側に配置されるという構成であっても、同様の作用および効果を得ることができる。したがって、本発明の技術的範囲は特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。   As mentioned above, although each embodiment based on this invention was described, each embodiment disclosed this time is an illustration and restrictive at no points. For example, the shaft 30 and the inner spindle 40 may be integrally formed. Even in this case, since the power transmission member 10 moves in the direction of the rotation axis with respect to the power transmission member 20, the power transmission member 10 rotates efficiently because the attracting force received by the magnet 91 from the magnet 92 is attenuated. It is possible to generate an impact by efficiently using the rotational power received from the motor 80 (see FIG. 1). Moreover, even if it is the structure that the power transmission member 10 (input side) is arrange | positioned outside, and the power transmission member 20 (output side) is arrange | positioned inside, the same effect | action and effect can be acquired. Therefore, the technical scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

１０ 動力伝達部材（第１動力伝達部材）、２０ 動力伝達部材（第２動力伝達部材）、３０，３０Ｂ，３０Ｄ シャフト（第３動力伝達部材）、３１，４１，５１，６１ 一端、３２，４２，５２，６２ 他端、３３ 小径部、３４ 円柱部、３４Ｓ，４４Ｓ，４５Ｓ，５４Ｓ，６３Ｓ，６５Ｓ 外周面、３５，６４ フランジ部、３６ 大径部、３７ キー溝、４０，４０Ｂ，４０Ｄ 内側スピンドル（第４動力伝達部材）、４３，４４，４５，５４，６３，６５ 円筒部、４６ 嵌め込み部、４７ キー、４８ 連続溝、４８Ａ，４８Ｂ 溝部（非吸着状態形成部）、４８Ｃ 溝部（吸着状態形成部）、４９ 取付凹部、５０，５０Ａ，５０Ｂ，５０Ｄ 外側スピンドル、５０Ｍ リングナット、５３ 取付部、５５，６７，９３ 貫通孔、５６ 内周面、６０，６０Ａ，６０Ｂ 回転支持体、６６ 開口部、６８，９５ 台座、６９，９４ 球体、７０ 本体ケース、７１ ハンマーケース、７２ キャップ、７３ 締結具、７４ スイッチ、８０ モータ、８１，８１，８４，８２，８２，８３，８３，８４ ベアリング、９１，９１ａ〜９１ｆ 磁石（第１磁石）、９２，９２ａ〜９２ｆ 磁石（第２磁石）、９６ 凸部、９７ 凹部、９８ バネ、１００，１０１，１０２ 衝撃発生装置、ＲＲ 領域、Ｓ１ 吸着状態、Ｓ２，Ｓ２ａ，Ｓ２ｂ 非吸着状態。   DESCRIPTION OF SYMBOLS 10 Power transmission member (1st power transmission member), 20 Power transmission member (2nd power transmission member), 30, 30B, 30D A shaft (3rd power transmission member), 31, 41, 51, 61 One end, 32, 42 , 52, 62 other end, 33 small diameter part, 34 cylindrical part, 34S, 44S, 45S, 54S, 63S, 65S outer peripheral surface, 35, 64 flange part, 36 large diameter part, 37 keyway, 40, 40B, 40D inside Spindle (fourth power transmission member), 43, 44, 45, 54, 63, 65 Cylindrical part, 46 fitting part, 47 key, 48 continuous groove, 48A, 48B groove part (non-adsorption state forming part), 48C groove part (adsorption) State forming part), 49 mounting recess, 50, 50A, 50B, 50D outer spindle, 50M ring nut, 53 mounting part, 55, 67, 93 through hole, 56 inner circumference , 60, 60A, 60B Rotating support, 66 opening, 68, 95 pedestal, 69, 94 sphere, 70 body case, 71 hammer case, 72 cap, 73 fastener, 74 switch, 80 motor, 81, 81, 84 , 82, 82, 83, 83, 84 Bearing, 91, 91a to 91f Magnet (first magnet), 92, 92a to 92f Magnet (second magnet), 96 convex portion, 97 concave portion, 98 spring, 100, 101, 102 Shock generator, RR region, S1 adsorption state, S2, S2a, S2b non-adsorption state.

Claims (3)

動力源と、
前記動力源からの回転動力を受けて回転する第１動力伝達部材と、
前記第１動力伝達部材に固着され、前記第１動力伝達部材の回転に伴って前記第１動力伝達部材の回転方向に回転移動する第１磁石と、
前記第１動力伝達部材の回転軸と同軸状に配置され、前記回転軸周り方向に回転可能に設けられた第２動力伝達部材と、
前記第２動力伝達部材に固着されるとともに、前記第１動力伝達部材の回転半径方向において前記第１磁石に対向するように配置される第２磁石と、を備え、
前記第１動力伝達部材は、前記回転軸方向において前記第２動力伝達部材に対して往復移動可能に構成され、
前記第１磁石が前記第２磁石に磁気吸着している吸着状態においては、前記回転動力を受けた前記第１動力伝達部材の回転によって前記第１磁石は回転移動し、前記第１磁石の回転移動に伴って前記第２磁石が回転移動することによって前記第２動力伝達部材は前記第１動力伝達部材と一体的に回転し、
前記第２動力伝達部材の回転を妨げるとともに前記吸着状態を解除する外部負荷が前記第２動力伝達部材に付与された状態においては、前記第１動力伝達部材は前記第２動力伝達部材に対して前記回転方向に滑るように回転し、前記吸着状態と前記第１磁石が前記第２磁石に磁気吸着していない非吸着状態とが交互に繰り返されることによって前記第２動力伝達部材には前記回転方向に作用する衝撃力が発生し、
前記吸着状態および前記非吸着状態が交互に繰り返される際に前記第１動力伝達部材が前記第２動力伝達部材に対して前記回転軸方向に往復移動することによって、前記第１磁石の前記第２磁石に対する前記回転軸方向における位置は、前記吸着状態に比べて前記非吸着状態の方がずれている、
衝撃発生装置。 Power source,
A first power transmission member that rotates in response to rotational power from the power source;
A first magnet fixed to the first power transmission member and rotating in the rotational direction of the first power transmission member as the first power transmission member rotates;
A second power transmission member disposed coaxially with the rotational axis of the first power transmission member and provided rotatably around the rotational axis;
A second magnet fixed to the second power transmission member and arranged to face the first magnet in the rotational radius direction of the first power transmission member,
The first power transmission member is configured to be capable of reciprocating with respect to the second power transmission member in the rotation axis direction,
In the attracted state in which the first magnet is magnetically attracted to the second magnet, the first magnet is rotated by the rotation of the first power transmission member that receives the rotational power, and the rotation of the first magnet. The second power transmission member rotates integrally with the first power transmission member by rotating the second magnet as it moves,
In a state where an external load that prevents rotation of the second power transmission member and releases the attracted state is applied to the second power transmission member, the first power transmission member is in contact with the second power transmission member. The second power transmission member rotates by sliding in the direction of rotation, and alternately repeats the attracted state and the non-adsorbed state where the first magnet is not magnetically attracted to the second magnet. An impact force acting in the direction is generated,
When the adsorption state and the non-adsorption state are alternately repeated, the first power transmission member reciprocates in the direction of the rotation axis with respect to the second power transmission member, so that the second of the first magnet. The position in the rotation axis direction relative to the magnet is shifted in the non-adsorption state compared to the adsorption state.
Shock generator. 前記第１動力伝達部材は、
前記動力源からの前記回転動力を受けて回転し、前記第２動力伝達部材に対する前記回転軸方向における移動が固定された第３動力伝達部材と、
前記第３動力伝達部材が嵌め込まれる嵌め込み部を有し、前記嵌め込み部を前記第３動力伝達部材に嵌合させた状態で前記第３動力伝達部材とともに回転する第４動力伝達部材と、を含み、
前記第４動力伝達部材は、前記嵌め込み部が前記第３動力伝達部材に嵌合した状態で前記回転軸方向において前記第３動力伝達部材に対して往復移動可能に構成され、
前記第１磁石は前記第４動力伝達部材に固着され、
前記第２動力伝達部材および前記第２磁石は、前記回転半径方向における前記第４動力伝達部材の外側に配置され、
前記吸着状態においては、前記回転動力を受けた前記第３動力伝達部材の回転によって前記第４動力伝達部材が回転し、前記第４動力伝達部材の回転によって前記第１磁石が回転移動し、前記第１磁石の回転移動に伴って前記第２磁石が回転移動することによって前記第２動力伝達部材は前記第３動力伝達部材および前記第４動力伝達部材と一体的に回転し、
前記第２動力伝達部材の回転を妨げるとともに前記吸着状態を解除する前記外部負荷が前記第２動力伝達部材に付与された状態においては、前記第４動力伝達部材は、前記第２動力伝達部材に対して前記回転方向に滑るように回転するとともに、前記第３動力伝達部材に対して前記回転軸方向に往復移動する、
請求項１に記載の衝撃発生装置。 The first power transmission member is
A third power transmission member that rotates in response to the rotational power from the power source, and that is fixed to move in the rotational axis direction with respect to the second power transmission member;
A fourth power transmission member having a fitting portion into which the third power transmission member is fitted, and rotating together with the third power transmission member in a state in which the fitting portion is fitted to the third power transmission member. ,
The fourth power transmission member is configured to be capable of reciprocating with respect to the third power transmission member in the rotational axis direction in a state where the fitting portion is fitted to the third power transmission member.
The first magnet is fixed to the fourth power transmission member;
The second power transmission member and the second magnet are disposed outside the fourth power transmission member in the rotational radius direction,
In the attracted state, the fourth power transmission member is rotated by the rotation of the third power transmission member that receives the rotational power, and the first magnet is rotated by the rotation of the fourth power transmission member, The second power transmission member rotates integrally with the third power transmission member and the fourth power transmission member by rotating the second magnet in accordance with the rotational movement of the first magnet,
In a state where the external load that prevents rotation of the second power transmission member and releases the attracted state is applied to the second power transmission member, the fourth power transmission member is connected to the second power transmission member. And rotating to slide in the rotational direction, and reciprocating in the rotational axis direction with respect to the third power transmission member,
The impact generator according to claim 1. 前記第４動力伝達部材の外周面には環状の第１嵌合部が設けられ、
前記第２動力伝達部材の内周面には、前記第１嵌合部に嵌合する第２嵌合部が設けられ、
前記第１嵌合部は、前記回転軸方向における位置が互いに異なる吸着状態形成部および非吸着状態形成部を含み、
前記第４動力伝達部材が前記第２動力伝達部材に対して前記回転方向に滑るように回転している状態においては、前記第２嵌合部が前記吸着状態形成部および前記非吸着状態形成部に対して交互に摺接することによって、前記第４動力伝達部材は前記第２動力伝達部材に対して前記回転軸方向に往復移動し、前記第１磁石の前記第２磁石に対する前記回転軸方向における位置は、前記吸着状態に比べて前記非吸着状態の方がずれている、
請求項２に記載の衝撃発生装置。 An annular first fitting portion is provided on the outer peripheral surface of the fourth power transmission member,
A second fitting portion that fits into the first fitting portion is provided on the inner peripheral surface of the second power transmission member,
The first fitting portion includes an adsorption state forming portion and a non-adsorption state forming portion having different positions in the rotation axis direction,
In a state where the fourth power transmission member is rotating so as to slide in the rotation direction with respect to the second power transmission member, the second fitting portion is configured to be the adsorption state forming portion and the non-adsorption state forming portion. The fourth power transmission member reciprocates in the direction of the rotation axis with respect to the second power transmission member by alternately sliding in contact with the second magnet, and the first magnet in the direction of the rotation axis with respect to the second magnet. The position is shifted in the non-adsorption state compared to the adsorption state,
The impact generator according to claim 2.
JP2011118918A 2011-05-27 2011-05-27 Impact generator Expired - Fee Related JP4834188B1 (en)

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