JP6753752B2 - Support structure of electric motor for bicycle and drive unit for bicycle including this - Google Patents

Support structure of electric motor for bicycle and drive unit for bicycle including this Download PDF

Info

Publication number
JP6753752B2
JP6753752B2 JP2016194072A JP2016194072A JP6753752B2 JP 6753752 B2 JP6753752 B2 JP 6753752B2 JP 2016194072 A JP2016194072 A JP 2016194072A JP 2016194072 A JP2016194072 A JP 2016194072A JP 6753752 B2 JP6753752 B2 JP 6753752B2
Authority
JP
Japan
Prior art keywords
ring body
output shaft
outer ring
inner ring
support structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2016194072A
Other languages
Japanese (ja)
Other versions
JP2018054085A (en
Inventor
福田　雅彦
雅彦 福田
充 田内
充 田内
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimano Inc
Original Assignee
Shimano Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shimano Inc filed Critical Shimano Inc
Priority to JP2016194072A priority Critical patent/JP6753752B2/en
Priority to CN201710891747.4A priority patent/CN107878663A/en
Priority to DE102017217307.6A priority patent/DE102017217307A1/en
Publication of JP2018054085A publication Critical patent/JP2018054085A/en
Application granted granted Critical
Publication of JP6753752B2 publication Critical patent/JP6753752B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/55—Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K19/00—Cycle frames
    • B62K19/30—Frame parts shaped to receive other cycle parts or accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
    • B62M11/02—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of unchangeable ratio
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/063—Fixing them on the shaft
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/067—Fixing them in a housing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/20—Land vehicles
    • F16C2326/28—Bicycle propulsion, e.g. crankshaft and its support
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
    • F16C2380/27—Motor coupled with a gear, e.g. worm gears

Description

本発明は、自転車用電動モータの支持構造およびこれを含む自転車用ドライブユニットに関する。 The present invention relates to a support structure for an electric motor for a bicycle and a drive unit for a bicycle including the support structure.

特許文献１に開示される自転車用電動モータの支持構造は、ウェーブワッシャを用いて軸受のスラスト方向の位置決めを行っている。 The support structure of the electric motor for a bicycle disclosed in Patent Document 1 uses a wave washer to position the bearing in the thrust direction.

特開２００８−１７５３９号公報Japanese Unexamined Patent Publication No. 2008-17539

上記自転車用電動モータの支持構造では、自転車がオフロードを走行して、自転車用電動モータに振動が与えられるときに、ウェーブワッシャが変形して、自転車用電動モータの出力軸が軸方向に移動してしまうことがある。 In the support structure of the electric motor for bicycles, when the bicycle travels off-road and vibration is applied to the electric motor for bicycles, the wave washer is deformed and the output shaft of the electric motor for bicycles moves in the axial direction. I may end up doing it.

本発明の目的は、出力軸の軸方向への移動を抑制することを可能とした自転車用電動モータの支持構造およびこれを含む自転車用ドライブユニットを提供することである。 An object of the present invention is to provide a support structure for an electric motor for a bicycle and a drive unit for a bicycle including the support structure capable of suppressing the axial movement of the output shaft.

（１）本発明に従う自転車用電動モータの支持構造の一形態は、ロータ、ステータ、および、前記ロータと共に回転する出力軸を含む自転車用電動モータの支持構造であって、支持部と、第１の内輪体、第１の外輪体、および、前記第１の内輪体と前記第１の外輪体との間に設けられる第１の転動体を含み、前記第１の内輪体および前記第１の外輪体の一方は、前記出力軸のうちの前記ロータに連結される第１の部分と他の部材に連結可能な第２の部分との間の部分を支持し、前記第１の内輪体および前記第１の外輪体の他方は、前記支持部に支持される第１の軸受と、前記支持部とは別体に形成され、前記出力軸と同軸に配置され、前記出力軸の軸心に沿って前記第１の部分から前記第２の部分に向かう第１の方向への、前記第１の内輪体および前記第１の外輪体の他方の移動を規制する第１の規制部材と、を含む。 (1) One form of a support structure for a bicycle electric motor according to the present invention is a support structure for a bicycle electric motor including a rotor, a stator, and an output shaft that rotates with the rotor, and includes a support portion and a first support structure. The inner ring body, the first outer ring body, and the first rolling element provided between the first inner ring body and the first outer ring body, the first inner ring body and the first outer ring body. One of the outer ring supports a portion of the output shaft between the first portion connected to the rotor and the second portion connectable to the other member, the first inner ring and the inner ring. The other side of the first outer ring body is formed separately from the first bearing supported by the support portion and the support portion, is arranged coaxially with the output shaft, and is located at the axis of the output shaft. A first restricting member that regulates the movement of the first inner ring body and the other outer ring body in the first direction from the first portion to the second portion along the same. Including.

（１）の自転車用電動モータの支持構造によれば、第１の規制部材が第１の方向への第１の内輪体および第１の外輪体の他方の移動を規制する。第１の規制部材は、支持部とは別体に形成されるため、第１の規制部材の支持部に対する位置を調整することによって第１の規制部材と第１の内輪体および第１の外輪体との位置関係を適切なものにすることができる。このため、第１の内輪体および第１の外輪体の一方が支持する出力軸の軸方向への移動を抑制することができる。 According to the support structure of the electric motor for bicycles (1), the first regulating member regulates the movement of the other inner ring body and the first outer ring body in the first direction. Since the first regulating member is formed separately from the support portion, the first regulating member, the first inner ring body, and the first outer ring are formed by adjusting the positions of the first regulating member with respect to the supporting portion. The positional relationship with the body can be made appropriate. Therefore, it is possible to suppress the axial movement of the output shaft supported by one of the first inner ring body and the first outer ring body.

（２）前記（１）に記載の自転車用電動モータの支持構造において、前記支持部は、前記出力軸と同軸に設けられる第１のねじ部を含み、前記第１の規制部材は、前記第１のねじ部にねじ込まれる第２のねじ部を含む。
（２）の自転車用電動モータの支持構造によれば、支持部の第１のねじ部を第１の規制部材の第２のねじ部にねじ込む長さを調整することによって、第１の規制部材の支持部に対する位置を調整することができる。 (2) In the support structure of the electric motor for a bicycle according to the above (1), the support portion includes a first screw portion provided coaxially with the output shaft, and the first regulation member is the first regulation member. Includes a second threaded portion that is screwed into one threaded portion.
According to the support structure of the electric motor for bicycles of (2), the first regulation member is adjusted by adjusting the length of screwing the first screw portion of the support portion into the second screw portion of the first regulation member. The position of the bicycle with respect to the support portion can be adjusted.

（３）前記（２）に記載の自転車用電動モータの支持構造において、前記支持部は、前記出力軸が貫通する孔を含み、前記第１の軸受は、前記孔に配置される。
（３）の自転車用電動モータの支持構造によれば、第１の軸受は、支持部に含まれる出力軸が貫通する孔に配置されるため、孔の内部において出力軸を支持することができる。 (3) In the support structure of the electric motor for a bicycle according to the above (2), the support portion includes a hole through which the output shaft penetrates, and the first bearing is arranged in the hole.
According to the support structure of the electric motor for bicycles (3), since the first bearing is arranged in the hole through which the output shaft included in the support portion penetrates, the output shaft can be supported inside the hole. ..

（４）前記（３）に記載の自転車用電動モータの支持構造において、前記第１のねじ部は、前記第１の方向において前記第２の部分と前記第１の軸受との間に設けられ、前記孔の内周面の少なくとも一部を含み、前記第１の規制部材は、筒状に形成され、前記第２のねじ部は、前記第１の規制部材の外周部に形成されている。
（４）の自転車用電動モータの支持構造によれば、第１の規制部材の第２のねじ部を第１のねじ部にねじ込むことによって、第１の規制部材を適切な位置に配置することができる。 (4) In the support structure for the electric motor for bicycles according to (3), the first threaded portion is provided between the second portion and the first bearing in the first direction. The first regulating member is formed in a tubular shape, and the second threaded portion is formed on the outer peripheral portion of the first regulating member, including at least a part of the inner peripheral surface of the hole. ..
According to the support structure of the electric motor for bicycles of (4), the first regulating member is arranged at an appropriate position by screwing the second screw portion of the first regulating member into the first screw portion. Can be done.

（５）前記（４）に記載の自転車用電動モータの支持構造において、前記第１の規制部材は、前記第１の方向の上流側の第１の端部に、前記第２のねじ部の外周面よりも前記出力軸の径方向の外方に突出する第１の突出部をさらに含む。
（５）の自転車用電動モータの支持構造によれば、上記第１の規制部材の第１の突出部は、第１のねじ部の内径よりも大きくなるので、第１の規制部材が第１のねじ部の内部を第１の方向に移動することが規制される。 (5) In the support structure of the electric motor for a bicycle according to the above (4), the first regulating member is attached to the first end portion on the upstream side in the first direction and the second screw portion. It further includes a first protruding portion that protrudes outward in the radial direction of the output shaft from the outer peripheral surface.
According to the support structure of the electric motor for bicycles (5), the first protruding portion of the first regulating member is larger than the inner diameter of the first threaded portion, so that the first regulating member is the first. It is restricted to move in the first direction inside the threaded portion of the bicycle.

（６）前記（５）に記載の自転車用電動モータの支持構造において、前記第１の規制部材の前記第１の端部は、円環状に形成されている。
（６）の自転車用電動モータの支持構造によれば、第１の端部が出力軸の軸まわりに不連続に形成されている場合と比較して、第１の規制部材は第１の内輪体および前記第１の外輪体の他方からの第１の方向に向かう力を安定して受けることができる。 (6) In the support structure for the electric motor for a bicycle according to the above (5), the first end portion of the first regulating member is formed in an annular shape.
According to the support structure of the electric motor for bicycles (6), the first regulating member is the first inner ring as compared with the case where the first end is discontinuously formed around the axis of the output shaft. It is possible to stably receive a force toward the first direction from the body and the other of the first outer ring body.

（７）前記（５）または（６）に記載の自転車用電動モータの支持構造において、前記第１の規制部材の前記第１の端部は、前記第１の内輪体および前記第１の外輪体の他方と接触可能に対向する。
（７）の自転車用電動モータの支持構造によれば、第１の端部と第１の内輪体および第１の外輪体の他方とが接触することによって、第１の規制部材が出力軸の第１の方向への移動を規制することができる。 (7) In the support structure for the electric motor for a bicycle according to (5) or (6), the first end portion of the first regulating member is the first inner ring body and the first outer ring. It faces the other side of the body in contact with it.
According to the support structure of the electric motor for a bicycle of (7), the first regulating member is the output shaft due to the contact between the first end portion and the other of the first inner ring body and the first outer ring body. Movement in the first direction can be regulated.

（８）前記（３）〜（７）のいずれか一項に記載の自転車用電動モータの支持構造において、前記支持部は、前記出力軸の径方向の外方から前記ロータおよび前記ステータを覆う外周部と、前記孔が形成され、前記出力軸の軸心に沿う方向において前記ロータおよび前記ステータの第１の端面を覆う第１の側壁部と、前記出力軸の軸心に沿う方向において前記ロータおよび前記ステータの第２の端面を覆う第２の側壁部と、を含む。
（８）の自転車用電動モータの支持構造によれば、外周部、第１の側壁部、および、第２の側壁部によってロータおよびステータが囲われるので、モータに異物等が付着することを抑制できる。 (8) In the support structure for the electric motor for bicycles according to any one of (3) to (7), the support portion covers the rotor and the stator from the outer side in the radial direction of the output shaft. The outer peripheral portion, the first side wall portion that covers the rotor and the first end surface of the stator in the direction along the axial center of the output shaft, and the direction along the axial center of the output shaft. Includes a second side wall that covers the rotor and the second end face of the stator.
According to the support structure of the electric motor for bicycles (8), the rotor and the stator are surrounded by the outer peripheral portion, the first side wall portion, and the second side wall portion, so that foreign matter and the like are suppressed from adhering to the motor. it can.

（９）前記（８）に記載の自転車用電動モータの支持構造において、前記第２の側壁部は、前記外周部に着脱可能に取り付けられている。
（９）の自転車用電動モータの支持構造によれば、第２の側壁部を外周部から取り外した状態で、モータを支持部に組み込んだり、モータのメンテナンスを行ったりすることができ、組立の作業性およびメンテナンス性が向上する。 (9) In the support structure for the electric motor for bicycles according to (8), the second side wall portion is detachably attached to the outer peripheral portion.
According to the support structure of the electric motor for bicycles (9), the motor can be incorporated into the support portion or the motor can be maintained with the second side wall portion removed from the outer peripheral portion, and the assembly can be performed. Workability and maintainability are improved.

（１０）前記（８）または（９）に記載の自転車用電動モータの支持構造において、前記第２の側壁部に設けられ、第２の内輪体、第２の外輪体、および、前記第２の内輪体と前記第２の外輪体との間に設けられる第２の転動体を含み、前記第２の内輪体および前記第２の外輪体の一方が前記出力軸に支持され、第２の内輪体および第２の外輪体の他方が前記第２の側壁部に支持される第２の軸受をさらに含む。
（１０）の自転車用電動モータの支持構造によれば、第１軸受の他に第２の軸受によってもモータの出力軸が支持されるため、モータの出力軸を安定して支持することができる。 (10) In the support structure for the electric motor for bicycles according to (8) or (9), the second inner ring body, the second outer ring body, and the second outer ring body provided on the second side wall portion. Including a second rolling element provided between the inner ring body and the second outer ring body, one of the second inner ring body and the second outer ring body is supported by the output shaft, and the second The other of the inner ring body and the second outer ring body further includes a second bearing supported by the second side wall portion.
According to the support structure of the electric motor for bicycles (10), since the output shaft of the motor is supported by the second bearing in addition to the first bearing, the output shaft of the motor can be stably supported. ..

（１１）前記（１０）に記載の自転車用電動モータの支持構造において、前記出力軸の外周部は、前記第２の軸受の前記第２の内輪体および前記第２の外輪体の一方に結合され、前記出力軸の前記第１の方向とは反対の第２の方向への移動を規制する第１の段差部を有する。
（１１）の自転車用電動モータの支持構造によれば、第２の内輪体および第２の外輪体の一方と第１の段差部との結合によって、出力軸の第２の方向への移動を規制することができる。 (11) In the support structure for the electric motor for bicycles according to (10), the outer peripheral portion of the output shaft is coupled to one of the second inner ring body and the second outer ring body of the second bearing. It has a first step portion that regulates the movement of the output shaft in the second direction opposite to the first direction.
According to the support structure of the electric motor for bicycles (11), the output shaft can be moved in the second direction by connecting one of the second inner ring body and the second outer ring body with the first step portion. Can be regulated.

（１２）前記（１１）に記載の自転車用電動モータの支持構造において、前記出力軸の外周部は、前記第１の部分と前記第１の段差部との間に、前記ロータの前記第２の方向への移動を規制する第２の段差部を有する。
（１２）の自転車用電動モータの支持構造によれば、第２の段差部によってロータの第２の方向への移動を規制することができる。 (12) In the support structure of the electric motor for a bicycle according to the above (11), the outer peripheral portion of the output shaft is formed between the first portion and the first step portion of the rotor. a second step portion which restricts the movement of the direction.
According to the support structure of the electric motor for bicycles (12), the movement of the rotor in the second direction can be regulated by the second step portion.

（１３）前記（３）〜（１２）のいずれか一項に記載の自転車用電動モータの支持構造において、前記第１の規制部材は、前記第２のねじ部の前記第１の方向の下流側に設けられる把持部をさらに含む。
（１３）の自転車用電動モータの支持構造によれば、把持部を用いて第１の方向の下流側から支持部の第１のねじ部に第１の規制部材の第２のねじ部をねじ込むことができる。 (13) In the support structure for the electric motor for a bicycle according to any one of (3) to (12), the first regulating member is downstream of the second screw portion in the first direction. It further includes a grip provided on the side.
According to bicycle support structure of the electric motor (13), the second threaded portion of the first regulating member to the first threaded portion on the downstream side or we support portion in the first direction with the grip portion Can be screwed in.

（１４）前記（１３）に記載の自転車用電動モータの支持構造において、前記把持部は、所定の工具を係合可能な形状を有する。
（１４）の自転車用電動モータの支持構造によれば所定の工具を把持部に係合して第１の規制部材を回転させることができるので、第１の規制部材を取り付けるときの作業性を向上させることができる。 (14) In the support structure of the electric motor for a bicycle according to the above (13), the grip portion has a shape in which a predetermined tool can be engaged.
According to the support structure of the electric motor for bicycles (14), a predetermined tool can be engaged with the grip portion to rotate the first regulating member, so that the workability when attaching the first regulating member can be improved. Can be improved.

（１５）前記（２）〜（１４）のいずれか一項に記載の自転車用電動モータの支持構造において、前記出力軸の軸心に沿う方向への前記第１の規制部材の移動を規制する第２の規制部材をさらに含む。
（１５）の自転車用電動モータの支持構造によれば、第２の規制部材によって、第１の規制部材を適切な位置に保持できる。 (15) In the support structure for the electric motor for bicycles according to any one of (2) to (14), the movement of the first regulating member in the direction along the axis of the output shaft is restricted. It further includes a second regulatory member.
According to the support structure of the electric motor for bicycles (15), the first regulating member can be held at an appropriate position by the second regulating member.

（１６）前記（１５）に記載の自転車用電動モータの支持構造において、前記第２のねじ部は、前記第１のねじ部から前記第１の方向の下流側に突出する第２の突出部を含み、前記第２の規制部材は、前記第２の突出部に取り付けられる。
（１６）の自転車用電動モータの支持構造によれば、第２の規制部材を同軸上に配置できるため、簡便な構造で第１の規制部材の移動を規制することができる。 (16) In the support structure for the electric motor for bicycles according to (15), the second threaded portion is a second protruding portion projecting downstream from the first threaded portion in the first direction. The second regulating member is attached to the second protrusion.
According to the support structure of the electric motor for bicycles (16), since the second regulating member can be arranged coaxially, the movement of the first regulating member can be regulated with a simple structure.

（１７）前記（１６）に記載の自転車用電動モータの支持構造において、前記第２の規制部材は、前記第２の突出部にねじ込まれる第３のねじ部を含む。
（１７）の自転車用電動モータの支持構造によれば、第２の規制部材を第２の突出部にねじ込むことによって、第２の規制部材と第１の規制部材とを結合することができる。 (17) In the support structure of the electric motor for a bicycle according to the above (16), the second regulating member includes a third threaded portion screwed into the second protruding portion.
According to the support structure of the electric motor for bicycles (17), the second regulating member and the first regulating member can be coupled by screwing the second regulating member into the second protruding portion.

（１８）前記（１）〜（１７）のいずれか一項に記載の自転車用電動モータの支持構造において、前記第１の内輪体および前記第１の外輪体の他方と、前記第１の規制部材とは、一体に形成されている。
（１８）の自転車用電動モータの支持構造によれば、部品点数の削減に貢献できる。 (18) In the support structure for the electric motor for a bicycle according to any one of (1) to (17), the first inner ring body, the other of the first outer ring body, and the first regulation. The member is integrally formed.
According to the support structure of the electric motor for bicycles (18), it is possible to contribute to the reduction of the number of parts.

（１９）前記（１）〜（１８）のいずれか一項に記載の自転車用電動モータの支持構造において、前記出力軸と同軸に設けられ、前記ロータと前記第１の軸受の前記第１の内輪体および前記第１の外輪体の他方との間に挟まれるスリーブをさらに含む。
（１９）の自転車用電動モータの支持構造によれば、スリーブによってロータと第１の内輪体および第１の外輪体の他方との位置関係を維持することができる。 (19) In the support structure of the electric motor for a bicycle according to any one of (1) to (18), the first one of the rotor and the first bearing provided coaxially with the output shaft. It further includes a sleeve sandwiched between the inner ring and the other of the first outer ring.
According to the support structure of the electric motor for bicycles (19), the positional relationship between the rotor and the other of the first inner ring body and the first outer ring body can be maintained by the sleeve.

（２０）本発明に従う自転車用ドライブユニットの一形態は、前記（１）〜（１９）のいずれか一項に記載の自転車用電動モータの支持構造と、前記ロータ、前記ステータ、および、前記出力軸を含む自転車用電動モータと、を含み、自転車の推進をアシスト可能に構成される。
（２０）の自転車用ドライブユニットによれば、自転車の走行状態に応じてモータの出力軸が軸方向に移動してしまうことが抑制され、モータの出力軸の移動に伴う騒音の発生を抑制することができる。 (20) One form of a bicycle drive unit according to the present invention includes the support structure of the electric motor for a bicycle according to any one of (1) to (19), the rotor, the stator, and the output shaft. It is configured to be capable of assisting the propulsion of a bicycle, including an electric motor for a bicycle.
According to the bicycle drive unit (20), it is suppressed that the output shaft of the motor moves in the axial direction according to the running state of the bicycle, and the generation of noise due to the movement of the output shaft of the motor is suppressed. Can be done.

（２１）前記（２０）に記載の自転車用ドライブユニットにおいて、前記出力軸の径方向において、前記ロータは、前記ステータの内側に配置されている。
（２１）の自転車用ドライブユニットによれば、ロータをステータの外側に配置する構成と比較して、ロータを回転軸に支持させる構造を簡素化することができる。 (21) In the bicycle drive unit according to (20), the rotor is arranged inside the stator in the radial direction of the output shaft.
According to the bicycle drive unit (21), the structure for supporting the rotor on the rotating shaft can be simplified as compared with the configuration in which the rotor is arranged outside the stator.

（２２）前記（２０）または（２１）に記載の自転車用ドライブユニットにおいて、前記自転車のクランク軸が設けられるハウジングをさらに含み、前記支持部の少なくとも一部は、前記ハウジングと一体に形成される。
（２２）の自転車用ドライブユニットによれば、自転車用電動モータを安定してハウジングに支持させることができる。 (22) In the bicycle drive unit according to (20) or (21), the housing provided with the crankshaft of the bicycle is further included, and at least a part of the support portion is formed integrally with the housing.
According to the bicycle drive unit (22), the bicycle electric motor can be stably supported by the housing.

本自転車用電動モータの支持構造およびこれを含む自転車用ドライブユニットは、出力軸の軸方向への移動を抑制することができる。 The support structure of the electric motor for the bicycle and the drive unit for the bicycle including the support structure can suppress the movement of the output shaft in the axial direction.

第１の実施形態の自転車用ドライブユニットの斜視図。The perspective view of the bicycle drive unit of 1st Embodiment. 図１の自転車用ドライブユニットの側面図。A side view of the bicycle drive unit of FIG. 図２の自転車用ドライブユニットから第１のハウジングおよび第１のハウジングに取り付けられる部材を省略した側面図。A side view of the bicycle drive unit of FIG. 2 in which the first housing and the members attached to the first housing are omitted. 図３の４−４線の部分断面図。FIG. 3 is a partial cross-sectional view taken along line 4-4 of FIG. 図４の５−５線の断面図。FIG. 4 is a sectional view taken along line 5-5 of FIG. 第２の実施形態の自転車用ドライブユニットの斜視図。The perspective view of the bicycle drive unit of the 2nd Embodiment. 図６の自転車用ドライブユニットの断面図。FIG. 6 is a cross-sectional view of the bicycle drive unit of FIG. 変形例の自転車用ドライブユニットの部分断面図。A partial cross-sectional view of a modified bicycle drive unit.

（第１の実施形態）
図１〜図５を参照して、第１の実施形態の自転車用ドライブユニット１０について説明する。自転車用ドライブユニット１０は、自転車用電動モータの支持構造５０と、自転車用電動モータ３０とを含む。以下、「自転車用ドライブユニット」を、単に「ドライブユニット」と記載する。以下、「自転車用電動モータの支持構造」を、単に「支持構造」と記載する。以下、「自転車用電動モータ」を、単に「モータ」と記載する。 (First Embodiment)
The bicycle drive unit 10 of the first embodiment will be described with reference to FIGS. 1 to 5. The bicycle drive unit 10 includes a support structure 50 for a bicycle electric motor and a bicycle electric motor 30. Hereinafter, the "bicycle drive unit" is simply referred to as a "drive unit". Hereinafter, the "support structure of the electric motor for a bicycle" is simply referred to as a "support structure". Hereinafter, the "electric motor for a bicycle" is simply referred to as a "motor".

図１および図２に示すドライブユニット１０は、自転車の推進をアシスト可能に構成される。ドライブユニット１０は、自転車（図示略）に取り付けられる。ドライブユニット１０は、外周部に自転車のフレーム（図示略）に取り付けるための複数の取付部１０Ａ、および、クランク軸１４を配置するための孔１０Ｂを含む。一例では、ドライブユニット１０は、クランク軸１４の周りに設けられる。 The drive unit 10 shown in FIGS. 1 and 2 is configured to be capable of assisting the propulsion of the bicycle. The drive unit 10 is attached to a bicycle (not shown). The drive unit 10 includes a plurality of mounting portions 10A for mounting on a bicycle frame (not shown) on the outer peripheral portion, and holes 10B for arranging the crankshaft 14. In one example, the drive unit 10 is provided around the crankshaft 14.

図３および図４に示されるとおり、ドライブユニット１０は、ハウジング１２、自転車のクランク軸１４、出力部１６、制御部１８、減速機２０、モータ３０、および、支持構造５０を含む。 As shown in FIGS. 3 and 4, the drive unit 10 includes a housing 12, a bicycle crankshaft 14, an output unit 16, a control unit 18, a speed reducer 20, a motor 30, and a support structure 50.

図４に示されるとおり、ハウジング１２は、第１のハウジング部分１２Ａおよび第２のハウジング部分１２Ｂを含む。第１のハウジング部分１２Ａおよび第２のハウジング部分１２ＢはボルトＢ（図１および図２参照）によって互いに取り付けられる。第２のハウジング部分１２Ｂは、モータ３０が貫通する孔１２Ｃを含む。ハウジング１２には、クランク軸１４が設けられる。ハウジング１２は、クランク軸１４の少なくとも一部、出力部１６の少なくとも一部、制御部１８、減速機２０、モータ３０の少なくとも一部、および、支持構造５０の少なくとも一部を収容する。 As shown in FIG. 4, the housing 12 includes a first housing portion 12A and a second housing portion 12B. The first housing portion 12A and the second housing portion 12B are attached to each other by bolts B (see FIGS. 1 and 2). The second housing portion 12B includes a hole 12C through which the motor 30 penetrates. The housing 12 is provided with a crankshaft 14. The housing 12 houses at least a part of the crankshaft 14, at least a part of the output unit 16, a control unit 18, a speed reducer 20, at least a part of the motor 30, and at least a part of the support structure 50.

クランク軸１４は、両端部がハウジング１２から突出するようにハウジング１２に設けられる。出力部１６の軸心は、クランク軸１４の軸心と一致する。出力部１６は、クランク軸１４の外周部に、クランク軸１４から離間して設けられる。クランク軸１４の回転は、ワンウェイクラッチ１４Ａを介して出力部１６に伝達される。出力部１６は、一方の端部がハウジング１２から突出するようにハウジング１２に設けられる。制御部１８は、人力駆動力を検出するトルクセンサ（図示略）等の種々のセンサからの信号に基づいてモータ３０を制御する。制御部１８は、回路基板および回路基板に実装されるマイクロコンピュータを含む制御部品を含む。 The crankshaft 14 is provided in the housing 12 so that both ends project from the housing 12. The axis of the output unit 16 coincides with the axis of the crankshaft 14. The output unit 16 is provided on the outer peripheral portion of the crankshaft 14 at a distance from the crankshaft 14. The rotation of the crankshaft 14 is transmitted to the output unit 16 via the one-way clutch 14A. The output unit 16 is provided in the housing 12 so that one end thereof protrudes from the housing 12. The control unit 18 controls the motor 30 based on signals from various sensors such as a torque sensor (not shown) that detects a human-powered driving force. The control unit 18 includes a circuit board and a control component including a microcomputer mounted on the circuit board.

図５に示されるとおり、モータ３０は、ロータ３２、ステータ３４、および、ロータ３２と共に回転する出力軸３６を含む。出力軸３６の径方向において、ロータ３２は、ステータ３４の内側に配置されている。モータ３０は、インナロータ型のモータである。出力軸３６は、ロータ３２に連結される第１の部分３６Ａ、他の部材に連結可能な第２の部分３６Ｂ、および、第１の部分３６Ａと第２の部分３６Ｂとの間の部分３６Ｃを含む。ロータ３２は、出力軸３６に回転不能に固定されている。出力軸３６は、中空に形成されていてもよく、中実に形成されていてもよい。第２の部分３６Ｂには、減速機２０（図４参照）と噛み合う歯車３８が設けられる。第２の部分３６Ｂと歯車３８とは一体に形成される。第２の部分３６Ｂに連結される他の部材は、歯車３８と噛み合う減速機２０の第１の歯車２２Ａである。別の例では、第２の部分３６Ｂに第２の部分３６Ｂと別体の歯車３８が設けられる。この場合、第２の部分３６Ｂに連結される他の部材は、歯車３８である。ロータ３２およびステータ３４は、それぞれ環状に形成されている。ロータ３２は、ロータコアと、ロータコアに支持される複数の永久磁石とを含む。ステータ３４は、ステータコアと、ステータコアに巻きつけられる複数のコイルとを含む。ロータコアおよびステータコアは、金属材料によって形成される。モータ３０は、いわゆるブラシレスモータである。 As shown in FIG. 5, the motor 30 includes a rotor 32, a stator 34, and an output shaft 36 that rotates with the rotor 32. In the radial direction of the output shaft 36, the rotor 32 is arranged inside the stator 34. The motor 30 is an inner rotor type motor. The output shaft 36 includes a first portion 36A connected to the rotor 32, a second portion 36B connectable to other members, and a portion 36C between the first portion 36A and the second portion 36B. Including. The rotor 32 is non-rotatably fixed to the output shaft 36. The output shaft 36 may be formed hollow or solid. The second portion 36B is provided with a gear 38 that meshes with the speed reducer 20 (see FIG. 4). The second portion 36B and the gear 38 are integrally formed. Another member connected to the second portion 36B is the first gear 22A of the speed reducer 20 that meshes with the gear 38. In another example, the second portion 36B is provided with a gear 38 that is separate from the second portion 36B. In this case, the other member connected to the second portion 36B is the gear 38. The rotor 32 and the stator 34 are each formed in an annular shape. The rotor 32 includes a rotor core and a plurality of permanent magnets supported by the rotor core. The stator 34 includes a stator core and a plurality of coils wound around the stator core. The rotor core and stator core are made of a metal material. The motor 30 is a so-called brushless motor.

図４に示されるとおり、減速機２０は、モータ３０と出力部１６とを結合する。減速機２０は、モータ３０の回転を減速して出力部１６に伝達する。一例では、減速機２０は、モータ３０の一方向の回転を出力部１６に伝達し、出力部１６の一方向の回転をモータ３０に伝達しないワンウェイクラッチ２０Ａを備える。 As shown in FIG. 4, the speed reducer 20 couples the motor 30 and the output unit 16. The speed reducer 20 reduces the rotation of the motor 30 and transmits it to the output unit 16. In one example, the speed reducer 20 includes a one-way clutch 20A that transmits one-way rotation of the motor 30 to the output unit 16 and does not transmit one-way rotation of the output unit 16 to the motor 30.

減速機２０は、第１の軸２２および第２の軸２４を含む。第１の軸２２および第２の軸２４は、クランク軸１４と平行する。第１の軸２２には、第１の歯車２２Ａおよび第２の歯車２２Ｂが設けられる。第１の軸２２の一端部は、軸受２２Ｃを介して第１のハウジング部分１２Ａに回転可能に支持され、他端部は、軸受２２Ｄを介して支持部５２に回転可能に支持される。第２の軸２４には、第３の歯車２４Ａおよび第４の歯車２４Ｂが設けられる。第２の軸２４の一端部は、軸受２４Ｃを介して第１のハウジング部分１２Ａに回転可能に支持され、他端部は、軸受２４Ｄを介して第２のハウジング部分１２Ｂに回転可能に支持される。第１の歯車２２Ａは、出力軸３６の歯車３８と噛み合う。第２の歯車２２Ｂは、第３の歯車２４Ａと噛み合う。第４の歯車２４Ｂは、出力部１６の外周部の歯車１６Ａと噛み合う。第１の歯車２２Ａの歯数は、歯車３８の歯数よりも多い。第３の歯車２４Ａの歯数は、第２の歯車２２Ｂの歯数よりも多い。出力部１６の歯車１６Ａの歯数は、第４の歯車２４Ｂの歯数よりも多い。このため、モータ３０の回転は、減速機２０によって３段階にわたって減速されて出力部１６に伝達される。ワンウェイクラッチ２０Ａは、第１の軸２２に設けられてもよいが、第２の軸２４に設けられるのがより好ましい。ワンウェイクラッチ２０Ａは、例えば第３の歯車２４Ａと第２の軸２４との間に設けられる。ワンウェイクラッチ２０Ａは、例えばローラクラッチを含む。減速機２０の構成は、これに限らない。例えば減速機２０は、歯車を２つ用いて１段階で減速したり、歯車を４つ用いて２段階で減速したり、歯車を８つ以上用いて４段階以上にわたって減速したりする構成とすることができる。減速機２０は、遊星歯車機構、ベルトおよびチェーンのいずれか１つを含んでいてもよい。 The speed reducer 20 includes a first shaft 22 and a second shaft 24. The first shaft 22 and the second shaft 24 are parallel to the crankshaft 14. The first shaft 22 is provided with a first gear 22A and a second gear 22B. One end of the first shaft 22 is rotatably supported by the first housing portion 12A via the bearing 22C, and the other end is rotatably supported by the support portion 52 via the bearing 22D. The second shaft 24 is provided with a third gear 24A and a fourth gear 24B. One end of the second shaft 24 is rotatably supported by the first housing portion 12A via the bearing 24C, and the other end is rotatably supported by the second housing portion 12B via the bearing 24D. To. The first gear 22A meshes with the gear 38 of the output shaft 36. The second gear 22B meshes with the third gear 24A. The fourth gear 24B meshes with the gear 16A on the outer peripheral portion of the output unit 16. The number of teeth of the first gear 22A is larger than the number of teeth of the gear 38. The number of teeth of the third gear 24A is larger than the number of teeth of the second gear 22B. The number of teeth of the gear 16A of the output unit 16 is larger than the number of teeth of the fourth gear 24B. Therefore, the rotation of the motor 30 is decelerated by the speed reducer 20 in three stages and transmitted to the output unit 16. The one-way clutch 20A may be provided on the first shaft 22, but it is more preferable that the one-way clutch 20A is provided on the second shaft 24. The one-way clutch 20A is provided, for example, between the third gear 24A and the second shaft 24. The one-way clutch 20A includes, for example, a roller clutch. The configuration of the speed reducer 20 is not limited to this. For example, the speed reducer 20 has a configuration in which two gears are used to decelerate in one stage, four gears are used to decelerate in two stages, and eight or more gears are used to decelerate in four or more stages. be able to. The speed reducer 20 may include any one of a planetary gear mechanism, a belt and a chain.

図５に示されるとおり、支持構造５０は、支持部５２と、第１の軸受５４と、第１の規制部材５６とを含む。一例では、支持構造５０は、第２の軸受５８、第２の規制部材６０、および、スリーブ６２をさらに含む。 As shown in FIG. 5, the support structure 50 includes a support portion 52, a first bearing 54, and a first regulatory member 56. In one example, the support structure 50 further includes a second bearing 58, a second regulatory member 60, and a sleeve 62.

支持部５２は、外周部６４と、第１の側壁部６６と、第２の側壁部６８と、を含む。支持部５２は、出力軸３６が貫通する孔７０を含む。外周部６４は、出力軸３６の径方向の外方からロータ３２およびステータ３４を覆う。外周部６４は、円筒形状を有する。外周部６４の内周部には、ステータ３４が固定して設けられる。外周部６４は、第１の側壁部６６に固定される。外周部６４は、第１の側壁部６６にボルトによって固定されてもよく、かしめによって固定されてもよく、溶接または接着によって固定されてもよい。 The support portion 52 includes an outer peripheral portion 64, a first side wall portion 66, and a second side wall portion 68. The support portion 52 includes a hole 70 through which the output shaft 36 penetrates. The outer peripheral portion 64 covers the rotor 32 and the stator 34 from the outside in the radial direction of the output shaft 36. The outer peripheral portion 64 has a cylindrical shape. A stator 34 is fixedly provided on the inner peripheral portion of the outer peripheral portion 64. The outer peripheral portion 64 is fixed to the first side wall portion 66. The outer peripheral portion 64 may be fixed to the first side wall portion 66 with bolts, may be fixed by caulking, or may be fixed by welding or adhesion.

第１の側壁部６６は、出力軸３６の軸心に沿う方向においてロータ３２およびステータ３４の第１の端面３４Ａを覆う。第１の側壁部６６には、孔７０が形成される。第１の側壁部６６は、出力軸３６の軸心に沿う方向と直交する方向に延びる円盤形状の板状部６６Ａと、板状部６６Ａの中央付近において出力軸３６の軸心に沿う方向に延びる突出部６６Ｂとを含む。孔７０は、突出部６６Ｂを出力軸３６の軸心に沿う方向に貫通する。支持部５２は、出力軸３６と同軸に設けられる第１のねじ部７０Ａを含む。孔７０の内周面は、第１のねじ部７０Ａと、非ねじ形成部７０Ｂとを含む。第１のねじ部７０Ａには、雌ねじが形成されている。非ねじ形成部７０Ｂは、第１のねじ部７０Ａよりもステータ３４側に形成されている。第１のねじ部７０Ａは、出力軸３６の軸心に沿って第１の部分３６Ａから第２の部分３６Ｂに向かう第１の方向Ａ１において第２の部分３６Ｂと第１の軸受５４との間に設けられる。第１のねじ部７０Ａは、孔７０の内周面の少なくとも一部を含む。第１のねじ部７０Ａは、孔７０のうちの第１の方向Ａ１において板状部６６Ａよりも下流側に形成される。図４に示されるとおり、板状部６６Ａには、第１の軸２２の軸受２２Ｄを支持する凹部６６Ｃが形成されている。支持部５２の外周部６４は、第２のハウジング部分１２Ｂを挿通する。外周部６４および第１の側壁部６６の少なくともいずれか一方には、ボルトを挿通可能な複数の孔が形成されており、ハウジング１２の内部空間側から図示しないボルトによって第２のハウジング部分１２Ｂに固定されている。 The first side wall portion 66 covers the first end surface 34A of the rotor 32 and the stator 34 in the direction along the axis of the output shaft 36. A hole 70 is formed in the first side wall portion 66. The first side wall portion 66 has a disk-shaped plate-shaped portion 66A extending in a direction orthogonal to the direction along the axis of the output shaft 36 and a direction along the axis of the output shaft 36 near the center of the plate-shaped portion 66A. Includes an extending protrusion 66B. The hole 70 penetrates the protrusion 66B in the direction along the axis of the output shaft 36. The support portion 52 includes a first screw portion 70A provided coaxially with the output shaft 36. The inner peripheral surface of the hole 70 includes a first threaded portion 70A and a non-threaded forming portion 70B. A female screw is formed in the first screw portion 70A. The non-thread forming portion 70B is formed on the stator 34 side of the first threaded portion 70A . The first threaded portion 70A is located between the second portion 36B and the first bearing 54 in the first direction A1 from the first portion 36A to the second portion 36B along the axis of the output shaft 36. It is provided in. The first threaded portion 70A includes at least a part of the inner peripheral surface of the hole 70. The first threaded portion 70A is formed on the downstream side of the plate-shaped portion 66A in the first direction A1 of the holes 70. As shown in FIG. 4, the plate-shaped portion 66A is formed with a recess 66C that supports the bearing 22D of the first shaft 22. The outer peripheral portion 64 of the support portion 52 inserts the second housing portion 12B. A plurality of holes through which bolts can be inserted are formed in at least one of the outer peripheral portion 64 and the first side wall portion 66, and the second housing portion 12B is provided with bolts (not shown) from the internal space side of the housing 12. It is fixed.

図５に示されるとおり、第２の側壁部６８は、出力軸３６の軸心に沿う方向においてロータ３２およびステータ３４の第２の端面３４Ｂを覆う。第２の側壁部６８は、円形の板形状を有する。第２の側壁部６８は、外周部６４と一体に形成される。第２の側壁部６８と外周部６４とは、ワンピース構造を有する。第２の側壁部６８は、ステータ３４側の表面部分に凹部６８Ａを含む。凹部６８Ａには、第２の軸受５８が配置される。第２の側壁部６８の第１の方向Ａ１の上流側の外表面は、図１および図４に示されるようにカバー部材３７によって覆われている。カバー部材３７は、第２のハウジング部分１２Ｂにボルトによって着脱可能に固定されている。カバー部材３７は、金属材料によって形成され、第２の側壁部６８に接触して設けられている。カバー部材３７には、外表面に放熱用のフィンが形成されるのが好ましい。 As shown in FIG. 5, the second side wall portion 68 covers the second end surface 34B of the rotor 32 and the stator 34 in the direction along the axial center of the output shaft 36. The second side wall portion 68 has a circular plate shape. The second side wall portion 68 is formed integrally with the outer peripheral portion 64. The second side wall portion 68 and the outer peripheral portion 64 have a one-piece structure. The second side wall portion 68 includes a recess 68A in the surface portion on the stator 34 side. A second bearing 58 is arranged in the recess 68A. The outer surface of the second side wall portion 68 on the upstream side in the first direction A1 is covered with the cover member 37 as shown in FIGS. 1 and 4. The cover member 37 is detachably fixed to the second housing portion 12B with bolts. The cover member 37 is made of a metal material and is provided in contact with the second side wall portion 68. It is preferable that the cover member 37 has fins for heat dissipation formed on the outer surface.

第１の軸受５４は、孔７０に配置される。第１の軸受５４は、第１の内輪体７２、第１の外輪体７４、および、第１の内輪体７２と第１の外輪体７４との間に設けられる第１の転動体７６を含む。第１の内輪体７２は、第１の部分３６Ａと第２の部分３６Ｂとの間の部分３６Ｃを支持する。第１の軸受５４は、ラジアル軸受である。一例では、第１の内輪体７２は、出力軸３６の部分３６Ｃに圧入されている。他の例では、第１の内輪体７２は、出力軸３６の部分３６Ｃに隙間嵌めされている。第１の外輪体７４は、支持部５２に支持される。一例では、第１の外輪体７４は、孔７０の非ねじ形成部７０Ｂに隙間嵌めされている。転動体７６は、球体であることが好ましいが、円柱体または円筒体であってもよい。第１の軸受５４は、第１の方向Ａ１において少なくとも一部が板状部６６Ａとオーバーラップするように配置されるのが好ましい。 The first bearing 54 is arranged in the hole 70. The first bearing 54 includes a first inner ring body 72, a first outer ring body 74, and a first rolling element 76 provided between the first inner ring body 72 and the first outer ring body 74. .. The first inner ring body 72 supports a portion 36C between the first portion 36A and the second portion 36B. The first bearing 54 is a radial bearing. In one example, the first inner ring body 72 is press-fitted into the portion 36C of the output shaft 36. In another example, the first inner ring body 72 is gap-fitted in the portion 36C of the output shaft 36. The first outer ring body 74 is supported by the support portion 52. In one example, the first outer ring body 74 is gap-fitted into the non-screw forming portion 70B of the hole 70. The rolling element 76 is preferably a sphere, but may be a cylinder or a cylinder. The first bearing 54 is preferably arranged so that at least a part of the first bearing 54 overlaps the plate-shaped portion 66A in the first direction A1.

第１の規制部材５６は、支持部５２とは別体に形成されている。第１の規制部材５６は、出力軸３６と同軸に配置され、第１の方向Ａ１への、第１の外輪体７４の移動を規制する。第１の規制部材５６は、筒状に形成される。第１の規制部材５６は、第２のねじ部８２を含む。一例では、第１の規制部材５６は、外周部７８、内周部８０、第１の突出部５６Ｃ、および、把持部５６Ｄをさらに含む。第１の規制部材５６は、例えば金属材料によって形成される。第１の規制部材５６は、高い剛性を有し、弾性変形しないことが好ましい。 The first regulating member 56 is formed separately from the support portion 52. The first regulating member 56 is arranged coaxially with the output shaft 36 and restricts the movement of the first outer ring body 74 in the first direction A1. The first regulating member 56 is formed in a tubular shape. The first regulatory member 56 includes a second threaded portion 82. In one example, the first regulatory member 56 further includes an outer peripheral portion 78, an inner peripheral portion 80, a first protruding portion 56C, and a grip portion 56D. The first regulatory member 56 is made of, for example, a metal material. It is preferable that the first regulating member 56 has high rigidity and does not elastically deform.

第２のねじ部８２は、第１のねじ部７０Ａにねじ込まれる。第２のねじ部８２は、第１の規制部材５６の外周部７８に形成されている。第２のねじ部８２は、雄ねじを含む。第２のねじ部８２は、第１のねじ部７０Ａから第１の方向Ａ１の下流側に突出する第２の突出部８２Ａを含む。すなわち、第２の突出部８２Ａは、第２のねじ部８２のうちの第２の端部５６Ｂ側の部分である。出力軸３６の軸心に沿う方向において、第２のねじ部８２は、第１のねじ部７０Ａよりも長い。 The second screw portion 82 is screwed into the first screw portion 70A. The second threaded portion 82 is formed on the outer peripheral portion 78 of the first regulating member 56. The second threaded portion 82 includes a male thread. The second threaded portion 82 includes a second protruding portion 82A that projects downstream from the first threaded portion 70A in the first direction A1. That is, the second protruding portion 82A is a portion of the second threaded portion 82 on the side of the second end portion 56B. The second threaded portion 82 is longer than the first threaded portion 70A in the direction along the axis of the output shaft 36.

第１の突出部５６Ｃは、第１の方向Ａ１の上流側の第１の端部５６Ａに、第２のねじ部８２の外周面よりも出力軸３６の径方向の外方に突出する。第１の規制部材５６の第１の端部５６Ａは、円環状に形成されている。第１の規制部材５６の第１の端部５６Ａは、第１の外輪体７４と接触可能に対向する。 The first protruding portion 56C projects outward from the outer peripheral surface of the second threaded portion 82 to the first end portion 56A on the upstream side in the first direction A1 in the radial direction of the output shaft 36. The first end 56A of the first regulatory member 56 is formed in an annular shape. The first end 56A of the first regulating member 56 faces the first outer ring body 74 in a contactable manner.

把持部５６Ｄは、第２のねじ部８２の第１の方向Ａ１の下流側に設けられる。把持部５６Ｄは、所定の工具を係合可能な形状を有する。把持部５６Ｄは、出力軸３６の軸心に垂直な方向の断面が、例えば六角形状を有する。この場合、所定の工具は、レンチである。 The grip portion 56D is provided on the downstream side of the second screw portion 82 in the first direction A1. The grip portion 56D has a shape capable of engaging a predetermined tool. The grip portion 56D has, for example, a hexagonal cross section in the direction perpendicular to the axis of the output shaft 36. In this case, the predetermined tool is a wrench.

第２の規制部材６０は、出力軸３６の軸心に沿う方向への第１の規制部材５６の移動を規制する。第２の規制部材６０は、第２の突出部８２Ａに取り付けられる。第２の規制部材６０は、第２の突出部８２Ａにねじ込まれる第３のねじ部８４を含む。第２の規制部材６０は、例えば金属材料によって形成される。第２の規制部材６０は、高い剛性を有し、弾性変形しないことが好ましい。第２の規制部材６０は、支持部５２との間に隙間ができないように、第３のねじ部８４が第２の突出部８２Ａにねじ込まれる。第２の規制部材６０と、支持部５２との間には、ワッシャなどの中間部材が設けられてもよいが、この場合には、第２の規制部材６０および中間部材の間と、中間部材と支持部５２との間に隙間ができないように第２の規制部材６０の第３のねじ部８４が第２の突出部８２Ａにねじ込まれる。 The second regulating member 60 regulates the movement of the first regulating member 56 in the direction along the axis of the output shaft 36. The second regulating member 60 is attached to the second protrusion 82A. The second regulating member 60 includes a third threaded portion 84 that is screwed into the second protruding portion 82A. The second regulatory member 60 is made of, for example, a metal material. It is preferable that the second regulating member 60 has high rigidity and does not elastically deform. In the second regulating member 60, the third threaded portion 84 is screwed into the second protruding portion 82A so that there is no gap between the second regulating member 60 and the supporting portion 52. An intermediate member such as a washer may be provided between the second regulating member 60 and the support portion 52. In this case, an intermediate member is provided between the second regulating member 60 and the intermediate member. The third threaded portion 84 of the second regulating member 60 is screwed into the second protruding portion 82A so that there is no gap between the and the support portion 52.

第２の軸受５８は、第２の側壁部６８に設けられる。第２の軸受５８は、第２の内輪体８６、第２の外輪体８８、および、第２の内輪体８６と第２の外輪体８８との間に設けられる第２の転動体９０を含む。第２の軸受５８は、ラジアル軸受である。第２の内輪体８６は、出力軸３６に支持される。一例では、第２の内輪体８６は、出力軸３６に隙間嵌めされている。別の例では、第２の内輪体８６は、出力軸３６に圧入されている。第２の外輪体８８は、第２の側壁部６８に支持される。一例では、第２の外輪体８８は、第２の側壁部６８の凹部６８Ａに隙間嵌めされている。別の例では、第２の外輪体８８は、凹部６８Ａに圧入されている。 The second bearing 58 is provided on the second side wall portion 68. The second bearing 58 includes a second inner ring body 86, a second outer ring body 88, and a second rolling element 90 provided between the second inner ring body 86 and the second outer ring body 88. .. The second bearing 58 is a radial bearing. The second inner ring body 86 is supported by the output shaft 36. In one example, the second inner ring body 86 is gap-fitted to the output shaft 36. In another example, the second inner ring 86 is press-fitted into the output shaft 36. The second outer ring body 88 is supported by the second side wall portion 68. In one example, the second outer ring body 88 is gap-fitted in the recess 68A of the second side wall portion 68. In another example, the second outer ring body 88 is press-fitted into the recess 68A.

出力軸３６の外周部３６Ｄは、第１の段差部３６Ｅおよび第２の段差部３６Ｆを有する。第１の段差部３６Ｅは、出力軸３６の第１の方向Ａ１の上流側の端部付近に設けられる。第１の段差部３６Ｅは、第２の軸受５８の第２の内輪体８６に結合され、出力軸３６の第１の方向Ａ１とは反対の第２の方向Ａ２への移動を規制する。第１の段差部３６Ｅの第１の方向Ａ１の上流側の端面は、第２の軸受５８の第２の内輪体８６の第１の方向Ａ１の下流側の端面に対向する。第２の段差部３６Ｆは、外周部３６Ｄの第１の部分３６Ａと第１の段差部３６Ｅとの間に設けられる。第２の段差部３６Ｆは、ロータ３２の第２の方向Ａ２へ移動を規制する。第２の段差部３６Ｆの第１の方向Ａ１の下流側の端面は、ロータ３２の第１の方向Ａ１の上流側の端面に対向する。 The outer peripheral portion 36D of the output shaft 36 has a first step portion 36E and a second step portion 36F. The first step portion 36E is provided near the upstream end portion of the output shaft 36 in the first direction A1. The first step portion 36E is coupled to the second inner ring body 86 of the second bearing 58 and restricts the movement of the output shaft 36 in the second direction A2 opposite to the first direction A1. The end face on the upstream side of the first step portion 36E in the first direction A1 faces the end face on the downstream side in the first direction A1 of the second inner ring body 86 of the second bearing 58. The second step portion 36F is provided between the first portion 36A and the first step portion 36E of the outer peripheral portion 36D. The second step portion 36F regulates the movement of the rotor 32 in the second direction A2. The end face on the downstream side of the second step portion 36F in the first direction A1 faces the end face on the upstream side in the first direction A1 of the rotor 32.

スリーブ６２は、出力軸３６と同軸に設けられる。スリーブ６２は、ロータ３２と第１の軸受５４の第１の内輪体７２との間に挟まれる。このため、ロータ３２は、第２の段差部３６Ｆとスリーブ６２との間に挟み込まれて出力軸３６に対する第１の方向Ａ１および第２の方向Ａ２への移動が規制される。また、スリーブ６２によって第１の内輪体７２の第２の方向Ａ２への移動が規制される。 The sleeve 62 is provided coaxially with the output shaft 36. The sleeve 62 is sandwiched between the rotor 32 and the first inner ring body 72 of the first bearing 54. Therefore, the rotor 32 is sandwiched between the second step portion 36F and the sleeve 62, and the movement of the rotor 32 in the first direction A1 and the second direction A2 with respect to the output shaft 36 is restricted. Further, the sleeve 62 restricts the movement of the first inner ring body 72 in the second direction A2.

第１の軸受５４の位置調整の方法について説明する。
第１の軸受５４の位置調整の方法は、第１の工程および第２の工程を含む。 A method of adjusting the position of the first bearing 54 will be described.
The method of adjusting the position of the first bearing 54 includes a first step and a second step.

第１の工程は、第１の側壁部６６の孔７０に、第１の方向Ａ１の下流側から第１の規制部材５６を挿入する工程を含む。このとき、工具を用いて把持部５６Ｄを回転させることによって、第１の規制部材５６の第２のねじ部８２を第１のねじ部７０Ａにねじ込む。第２のねじ部８２の第１のねじ部７０Ａへのねじ込み量を調整することによって、第１の規制部材５６の支持部５２に対する位置が調整される。 The first step includes a step of inserting the first regulating member 56 into the hole 70 of the first side wall portion 66 from the downstream side in the first direction A1. At this time, by rotating the grip portion 56D with a tool, the second screw portion 82 of the first regulation member 56 is screwed into the first screw portion 70A. By adjusting the screwing amount of the second screw portion 82 into the first screw portion 70A, the position of the first regulating member 56 with respect to the support portion 52 is adjusted.

第２の工程は、第２のねじ部８２に第２の規制部材６０をねじ込む工程を含む。第２のねじ部８２を第２の規制部材６０にねじ込むことによって、第１の規制部材５６の支持部５２に対する移動が規制される。 The second step includes a step of screwing the second regulating member 60 into the second screw portion 82. By screwing the second threaded portion 82 into the second regulating member 60, the movement of the first regulating member 56 with respect to the supporting portion 52 is restricted.

第１の工程において、第２のねじ部８２の第１のねじ部７０Ａへのねじ込み量を調整することによって、第１の外輪体７４と第１の規制部材５６の第１の端部５６Ａとの距離を適切な距離にすることができる。第１の外輪体７４と第１の規制部材５６の第１の端部５６Ａとの適切な距離は、例えば、第１の外輪体７４と第１の規制部材５６とが接触する距離、または、第１の外輪体７４と第１の規制部材５６との間に微小な隙間が生じる距離である。第１の外輪体７４と第１の規制部材５６との距離は、例えば０μｍ以上、かつ、１ｍｍ以下が好ましく、２００μｍ以下がさらに好ましい。好ましくは、第１の規制部材５６は、第１の外輪体７４に予圧を付与するように支持部５２に配置される。 In the first step, by adjusting the screwing amount of the second screw portion 82 into the first screw portion 70A, the first outer ring body 74 and the first end portion 56A of the first regulation member 56 are formed. The distance can be set to an appropriate distance. The appropriate distance between the first outer ring body 74 and the first end portion 56A of the first regulating member 56 is, for example, the distance at which the first outer ring body 74 and the first regulating member 56 come into contact with each other, or This is the distance at which a minute gap is formed between the first outer ring body 74 and the first regulating member 56. The distance between the first outer ring body 74 and the first regulating member 56 is, for example, preferably 0 μm or more, preferably 1 mm or less, and more preferably 200 μm or less. Preferably, the first regulating member 56 is arranged on the support portion 52 so as to apply a preload to the first outer ring body 74.

（第２の実施形態）
図６および図７を参照して、第２の実施形態のドライブユニット１１０について説明する。ドライブユニット１１０は、支持構造１５０を含む。ドライブユニット１０と、ドライブユニット１１０とは、支持構造１５０の支持部９４の構成のみが異なり、他の部分は同様であるので、第１の実施形態と共通する構成については、第１の実施形態と同一の符号を付し、重複する説明を省略する。第２の実施形態では、支持部９４の少なくとも一部が、ドライブユニット１１０のハウジング９２と一体に形成される。なお、図６および図７では、モータ３０、ハウジング９２の一部分、および、支持構造１５０以外の部材を省略して示す。 (Second embodiment)
The drive unit 110 of the second embodiment will be described with reference to FIGS. 6 and 7. The drive unit 110 includes a support structure 150. The drive unit 10 and the drive unit 110 differ only in the configuration of the support portion 94 of the support structure 150, and the other parts are the same. Therefore, the configuration common to the first embodiment is the same as that of the first embodiment. Is added and duplicate description is omitted. In the second embodiment, at least a part of the support portion 94 is formed integrally with the housing 92 of the drive unit 110. In FIGS. 6 and 7, members other than the motor 30, a part of the housing 92, and the support structure 150 are omitted.

図６に示されるとおり、ドライブユニット１１０は、ハウジング９２を含む。ハウジング９２は、第１のハウジング部分１２Ａおよび第２のハウジング部分９２Ｂを含む。第１のハウジング部分１２Ａおよび第２のハウジング部分９２ＢはボルトＢを介して互いに取り付けられる。図７に示されるとおり、第２のハウジング部分９２Ｂには、ハウジング９２の外側から第２のハウジング部分９２Ｂにステータ３４、ロータ３２、および、出力軸３６を取り付けるための開口９２Ｃが形成されている。 As shown in FIG. 6, the drive unit 110 includes a housing 92. The housing 92 includes a first housing portion 12A and a second housing portion 92B. The first housing portion 12A and the second housing portion 92B are attached to each other via bolts B. As shown in FIG. 7, the second housing portion 92B is formed with an opening 92C for attaching the stator 34, the rotor 32, and the output shaft 36 from the outside of the housing 92 to the second housing portion 92B. ..

支持構造１５０は、支持部９４と、第１の軸受５４と、第１の規制部材５６とを含む。一例では、支持構造１５０は、第２の軸受５８、第２の規制部材６０、および、スリーブ６２をさらに含む。 The support structure 150 includes a support portion 94, a first bearing 54, and a first regulatory member 56. In one example, the support structure 150 further includes a second bearing 58, a second regulatory member 60, and a sleeve 62.

支持部９４は、外周部９６、第１の側壁部９８、および、第２の側壁部９９を含む。支持部９４の少なくとも一部は、ハウジング９２と一体に形成される。外周部９６および第１の側壁部９８は、第２のハウジング部分９２Ｂと一体に形成される。第１の側壁部９８は、ハウジング９２と一体に形成されている点以外は、第１の実施形態の第１の側壁部６６と同様な構成である。外周部９６は、ハウジング９２と一体に形成されている点以外は、第１実施形態の外周部６４（図４参照）と同様な構成である。第２のハウジング部分９２Ｂは、第１の実施形態における第２のハウジング部分１２Ｂ、外周部６４、および、第１の側壁部６６（いずれも図４参照）をワンピース構造にした構成と同様である。第２の側壁部９９は、円盤形状を有する。第２の側壁部９９は、外周部９６に着脱可能に取り付けられている。第２のハウジング部分９２Ｂの開口９２Ｃは、外周部９６の第１の方向Ａ１の上流側の端部に形成されている。第２の側壁部９９は、開口９２Ｃを塞ぐように取り付けられる。一例では、第２の側壁部９９は、ボルト（図示略）によって外周部９６に着脱可能に取り付けられている。第２の側壁部９９の構造は、外周部９６と別体で構成される点以外は、第１の実施形態の第２の側壁部６８（図４参照）の構造と同様である。第２の側壁部９９の外表面には、第１の実施形態のカバー部材３７（図４参照）と同様な放熱フィンを設けてもよい。 The support portion 94 includes an outer peripheral portion 96, a first side wall portion 98, and a second side wall portion 99. At least a part of the support portion 94 is formed integrally with the housing 92. The outer peripheral portion 96 and the first side wall portion 98 are formed integrally with the second housing portion 92B. The first side wall portion 98 has the same configuration as the first side wall portion 66 of the first embodiment except that it is integrally formed with the housing 92. The outer peripheral portion 96 has the same configuration as the outer peripheral portion 64 (see FIG. 4) of the first embodiment except that it is integrally formed with the housing 92. The second housing portion 92B is similar to the configuration in which the second housing portion 12B, the outer peripheral portion 64, and the first side wall portion 66 (all of which see FIG. 4) have a one-piece structure in the first embodiment. .. The second side wall portion 99 has a disk shape. The second side wall portion 99 is detachably attached to the outer peripheral portion 96. The opening 92C of the second housing portion 92B is formed at the upstream end of the outer peripheral portion 96 in the first direction A1. The second side wall 99 is attached so as to close the opening 92C. In one example, the second side wall 99 is detachably attached to the outer peripheral 96 by bolts (not shown). The structure of the second side wall portion 99 is the same as that of the second side wall portion 68 (see FIG. 4) of the first embodiment, except that the second side wall portion 99 is formed separately from the outer peripheral portion 96. The outer surface of the second side wall portion 99 may be provided with heat radiation fins similar to the cover member 37 (see FIG. 4) of the first embodiment.

（変形例）
上記各実施形態に関する説明は、本発明に従う自転車用電動モータの支持構造および自転車用ドライブユニットが取り得る形態の例示であり、その形態を制限することを意図していない。本発明に従う自転車用電動モータの支持構造および自転車用ドライブユニットは、例えば以下に示される上記各実施形態の変形例、および、相互に矛盾しない少なくとも２つの変形例が組み合わせられた形態を取り得る。 (Modification)
The description of each of the above embodiments is an example of a support structure of an electric motor for a bicycle and a possible form of a drive unit for a bicycle according to the present invention, and is not intended to limit the form. The support structure of the electric motor for a bicycle and the drive unit for a bicycle according to the present invention may take, for example, a form in which a modification of each of the above embodiments shown below and at least two modifications that do not contradict each other are combined.

・出力軸３６を中空に形成して、第１の軸受５４の第１の外輪体７４が出力軸３６のうちの第１の部分３６Ａと第２の部分３６Ｂとの間の部分３６Ｃを支持し、第１の軸受５４の第１の内輪体７２が支持部５２に支持されるようにすることもできる。この場合、支持部５２の一部が、出力軸３６の内周空間に配置されるように支持部５２を構成する。第１の軸受５４は、出力軸３６の内周空間に配置され、出力軸３６の径方向で支持部５２の一部と出力軸３６との間に挟まれる。 The output shaft 36 is formed hollow, and the first outer ring body 74 of the first bearing 54 supports the portion 36C between the first portion 36A and the second portion 36B of the output shaft 36. , The first inner ring body 72 of the first bearing 54 can be supported by the support portion 52. In this case, the support portion 52 is configured so that a part of the support portion 52 is arranged in the inner peripheral space of the output shaft 36. The first bearing 54 is arranged in the inner peripheral space of the output shaft 36, and is sandwiched between a part of the support portion 52 and the output shaft 36 in the radial direction of the output shaft 36.

・出力軸３６を中空に形成して、第２の軸受５８の第２の外輪体８８が出力軸３６に支持され、第２の軸受５８の第２の内輪体８６が第２の側壁部６８，９９に支持されるようにすることもできる。この場合、支持部５２の一部が、出力軸３６の内周空間に配置されるように支持部５２を構成する。第２の軸受５８は、出力軸３６の内周空間に配置され出力軸３６の径方向で支持部５２の一部と出力軸３６との間に挟まれる。
The output shaft 36 is formed hollow, the second outer ring body 88 of the second bearing 58 is supported by the output shaft 36 , and the second inner ring body 86 of the second bearing 58 is the second side wall portion 68. , 99 can also be supported. In this case, the support portion 52 is configured so that a part of the support portion 52 is arranged in the inner peripheral space of the output shaft 36. The second bearing 58 is arranged in the inner peripheral space of the output shaft 36 and is sandwiched between a part of the support portion 52 and the output shaft 36 in the radial direction of the output shaft 36.

・モータ３０を、出力軸３６の径方向において、ロータ３２がステータ３４の外側に配置されるようにすることもできる。すなわち、モータ３０を、アウタロータ型のモータにすることもできる。この場合、出力軸３６の径方向に延びて、出力軸３６の外周部とロータ３２とを連結する連結部を設ければよい。 The motor 30 may be arranged so that the rotor 32 is arranged outside the stator 34 in the radial direction of the output shaft 36. That is, the motor 30 can be an outer rotor type motor. In this case, a connecting portion that extends in the radial direction of the output shaft 36 and connects the outer peripheral portion of the output shaft 36 and the rotor 32 may be provided.

・第１の軸受５４を、図８に示す第１の軸受１００に変更することもできる。第１の軸受１００は、いわゆるカップアンドコーン型の軸受である。第１の軸受１００は、第１の内輪体１０２、第１の外輪体１０４、および、第１の内輪体１０２と第１の外輪体１０４との間に設けられる第１の転動体１０６を含む。第１の外輪体１０４と、第１の規制部材５６とは、一体に形成されている。なお、第１の外輪体１０４と、第１の規制部材５６とは、別体で構成されていてもよい。 The first bearing 54 can be changed to the first bearing 100 shown in FIG. The first bearing 100 is a so-called cup-and-cone type bearing. The first bearing 100 includes a first inner ring body 102, a first outer ring body 104, and a first rolling element 106 provided between the first inner ring body 102 and the first outer ring body 104. .. The first outer ring body 104 and the first regulating member 56 are integrally formed. The first outer ring body 104 and the first regulating member 56 may be formed as separate bodies.

・第１の突出部５６Ｃは省略されてもよい。第１の突出部５６Ｃは、円環状以外の形状であってもよい。第１の突出部５６Ｃは、例えば出力軸３６の周方向に離間して複数の凸部を含んでいてもよい。 The first protrusion 56C may be omitted. The first protruding portion 56C may have a shape other than an annular shape. The first protruding portion 56C may include, for example, a plurality of convex portions separated in the circumferential direction of the output shaft 36.

・把持部５６Ｄは、工具が係合可能な形状に形成されなくてもよい。把持部５６Ｄは省略されてもよい。把持部５６Ｄを省略する場合、例えば第２のねじ部８２の外表面部の一部に工具を係合可能であって、平行な２つの平面を形成しておくことができる。 The grip portion 56D does not have to be formed in a shape to which the tool can be engaged. The grip 56D may be omitted. When the grip portion 56D is omitted, for example, the tool can be engaged with a part of the outer surface portion of the second screw portion 82, and two parallel planes can be formed.

・第２の規制部材６０の外周部は、工具が係合可能な形状に形成されていてもよい。
・第２の規制部材６０は省略されてもよい。第２の規制部材６０を省略する場合、第１の規制部材５６の位置調整を行った後、支持部５２の一部、たとえば突出部６６Ｂを変形させたり、接着剤を塗布したり、溶接したりして、第１の規制部材５６を支持部５２に固定することもできる。 The outer peripheral portion of the second regulating member 60 may be formed in a shape in which a tool can be engaged.
-The second regulating member 60 may be omitted. When the second regulating member 60 is omitted, after adjusting the position of the first regulating member 56, a part of the support portion 52, for example, the protruding portion 66B is deformed, an adhesive is applied, or welded. Alternatively, the first regulating member 56 can be fixed to the support portion 52.

・ドライブユニット１０を、自転車の車輪の車軸周りに設けることもできる。この場合、クランク軸１４は省略され、モータ３０の出力は、リアスプロケットまたはチェーンに伝達されるか、あるいはリアスプロケットを介さずにハブシェルに伝達されるように構成される。 The drive unit 10 can also be provided around the axle of the bicycle wheel. In this case, the crankshaft 14 is omitted and the output of the motor 30 is configured to be transmitted to the rear sprocket or chain, or to the hub shell without the rear sprocket.

・ドライブユニット１０の自転車の推進をアシストするモータ３０以外のモータに本発明を適用することもできる。例えば、電動変速機のモータ、電動アジャスタブルシートポストのモータ、電動サスペンションのモータなどが挙げられる。 The present invention can also be applied to a motor other than the motor 30 that assists the propulsion of the bicycle of the drive unit 10. For example, an electric transmission motor, an electric adjustable seatpost motor, an electric suspension motor, and the like can be mentioned.

１０…ドライブユニット（自転車用ドライブユニット）、１２，９２…ハウジング、３０…モータ（自転車用電動モータ）、３２…ロータ、３４…ステータ、３４Ａ…第１の端面、３４Ｂ…第２の端面、３６…出力軸、３６Ａ…第１の部分、３６Ｂ…第２の部分、３６Ｃ…部分、３６Ｄ…外周部、３６Ｅ…第１の段差部、３６Ｆ…第２の段差部、５０…自転車用電動モータの支持構造、５２，９４…支持部、５４…第１の軸受、５６…第１の規制部材、５６Ａ…第１の端部、５６Ｃ…第１の突出部、５６Ｄ…把持部、５８…第２の軸受、６０…第２の規制部材、６２…スリーブ、６４，９６…外周部、６６，９８…第１の側壁部、６８，９９…第２の側壁部、７０…孔、７０Ａ…第１のねじ部、７２…第１の内輪体、７４…第１の外輪体、７６…第１の転動体、７８…外周部、７８Ａ…外周面、８０…内周部、８２…第２のねじ部、８２Ａ…第２の突出部、８４…第３のねじ部、８６…第２の内輪体、８８…第２の外輪体、９０…第２の転動体。 10 ... drive unit (bicycle drive unit), 12, 92 ... housing, 30 ... motor (bicycle electric motor), 32 ... rotor, 34 ... stator, 34A ... first end face, 34B ... second end face, 36 ... output Shaft, 36A ... 1st part, 36B ... 2nd part, 36C ... Part, 36D ... Outer peripheral part, 36E ... 1st step part, 36F ... 2nd step part, 50 ... Support structure of electric motor for bicycle , 52, 94 ... Support, 54 ... First bearing, 56 ... First regulatory member, 56A ... First end, 56C ... First protrusion, 56D ... Grip, 58 ... Second bearing , 60 ... second regulating member, 62 ... sleeve, 64,96 ... outer peripheral portion, 66,98 ... first side wall portion, 68,99 ... second side wall portion, 70 ... hole, 70A ... first screw Part, 72 ... 1st inner ring body, 74 ... 1st outer ring body, 76 ... 1st rolling element, 78 ... outer peripheral part, 78A ... outer peripheral surface, 80 ... inner peripheral part, 82 ... second threaded part, 82A ... 2nd protruding part, 84 ... 3rd threaded part, 86 ... 2nd inner ring body, 88 ... second outer ring body, 90 ... second rolling element.

Claims (35)

ロータ、ステータ、および、前記ロータと共に回転する出力軸を含む自転車用電動モータの支持構造であって、
支持部と、
第１の内輪体、第１の外輪体、および、前記第１の内輪体と前記第１の外輪体との間に設けられる第１の転動体を含み、前記第１の内輪体および前記第１の外輪体の一方は、前記出力軸のうちの前記ロータに連結される第１の部分と他の部材に連結可能な第２の部分との間の部分を支持し、前記第１の内輪体および前記第１の外輪体の他方は、前記支持部に支持される第１の軸受と、
前記支持部とは別体に形成され、前記出力軸と同軸に配置され、前記第１の内輪体および前記第１の外輪体の他方と接触可能に対向し、前記出力軸の軸心に沿って前記第１の部分から前記第２の部分に向かう第１の方向への、前記第１の内輪体および前記第１の外輪体の他方の移動を規制する第１の規制部材と、を含み、
前記第１の規制部材は、前記第１の軸受に対して前記第１の方向の下流側に離れた位置において前記支持部に固定され、
前記支持部は、前記出力軸と同軸に設けられる第１のねじ部を含み、
前記第１の規制部材は、前記第１のねじ部にねじ込まれる第２のねじ部を含み、
前記支持部は、前記出力軸が貫通する孔を含み、
前記第１の軸受は、前記孔に配置され、
前記第１のねじ部は、前記第１の方向において前記第２の部分と前記第１の軸受との間に設けられ、前記孔の内周面の少なくとも一部を含み、
前記第１の規制部材は、筒状に形成され、
前記第２のねじ部は、前記第１の規制部材の外周部に形成され、
前記第１の規制部材は、前記第１の方向の上流側の第１の端部に、前記第２のねじ部の外周面よりも前記出力軸の径方向の外方に突出する第１の突出部をさらに含む、自転車用電動モータの支持構造。 A support structure for an electric bicycle motor including a rotor, a stator, and an output shaft that rotates with the rotor.
Support part and
A first inner ring body, a first outer ring body, and a first rolling element provided between the first inner ring body and the first outer ring body, the first inner ring body and the first outer ring body. One of the outer ring bodies of 1 supports a portion of the output shaft between the first portion connected to the rotor and the second portion connectable to the other member, and the first inner ring. The other of the body and the first outer ring body is a first bearing supported by the support portion and
It is formed separately from the support portion, is arranged coaxially with the output shaft, faces the other of the first inner ring body and the first outer ring body so as to be in contact with each other, and is along the axis of the output shaft. Includes a first regulating member that regulates the movement of the first inner ring and the other of the first outer ring in a first direction from the first portion to the second portion. ,
The first regulating member is fixed to the support portion at a position away from the first bearing on the downstream side in the first direction .
The support portion includes a first threaded portion provided coaxially with the output shaft.
The first regulating member includes a second threaded portion screwed into the first threaded portion.
The support includes a hole through which the output shaft penetrates.
The first bearing is arranged in the hole and
The first threaded portion is provided between the second portion and the first bearing in the first direction and includes at least a part of the inner peripheral surface of the hole.
The first regulating member is formed in a tubular shape and has a tubular shape.
The second threaded portion is formed on the outer peripheral portion of the first regulating member.
The first regulating member is a first one that protrudes outward from the outer peripheral surface of the second threaded portion in the radial direction of the output shaft at the first end portion on the upstream side in the first direction. Support structure for electric motors for bicycles, including additional protrusions . ロータ、ステータ、および、前記ロータと共に回転する出力軸を含む自転車用電動モータの支持構造であって、
支持部と、
第１の内輪体、第１の外輪体、および、前記第１の内輪体と前記第１の外輪体との間に設けられる第１の転動体を含み、前記第１の内輪体および前記第１の外輪体の一方は、前記出力軸のうちの前記ロータに連結される第１の部分と他の部材に連結可能な第２の部分との間の部分を支持し、前記第１の内輪体および前記第１の外輪体の他方は、前記支持部に支持される第１の軸受と、
前記支持部とは別体に形成され、前記出力軸と同軸に配置され、前記第１の内輪体および前記第１の外輪体の他方と接触可能に対向し、前記出力軸の軸心に沿って前記第１の部分から前記第２の部分に向かう第１の方向への、前記第１の内輪体および前記第１の外輪体の他方の移動を規制する第１の規制部材と、を含み、
前記支持部は、前記出力軸と同軸に設けられる第１のねじ部、および、前記出力軸が貫通する孔を含み、
前記第１の軸受は、前記孔に配置され、
前記第１の規制部材は、筒状に形成され、前記第１のねじ部にねじ込まれる第２のねじ部を含み、
前記第１のねじ部は、前記第１の方向において前記第２の部分と前記第１の軸受との間に設けられ、前記孔の内周面の少なくとも一部を含み、
前記第２のねじ部は、前記第１の規制部材の外周部に形成され、
前記第１の規制部材は、前記第１の方向の上流側の第１の端部に、前記第２のねじ部の外周面よりも前記出力軸の径方向の外方に突出する第１の突出部をさらに含む、自転車用電動モータの支持構造。 A support structure for an electric bicycle motor including a rotor, a stator, and an output shaft that rotates with the rotor.
Support part and
A first inner ring body, a first outer ring body, and a first rolling element provided between the first inner ring body and the first outer ring body, the first inner ring body and the first outer ring body. One of the outer ring bodies of 1 supports a portion of the output shaft between the first portion connected to the rotor and the second portion connectable to the other member, and the first inner ring. The other of the body and the first outer ring body is a first bearing supported by the support portion and
It is formed separately from the support portion, is arranged coaxially with the output shaft, faces the other of the first inner ring body and the first outer ring body so as to be in contact with each other, and is along the axis of the output shaft. Includes a first regulating member that regulates the movement of the first inner ring and the other of the first outer ring in a first direction from the first portion to the second portion. ,
The support portion includes a first screw portion provided coaxially with the output shaft and a hole through which the output shaft penetrates.
The first bearing is arranged in the hole and
The first regulating member includes a second threaded portion that is formed in a tubular shape and is screwed into the first threaded portion.
The first threaded portion is provided between the second portion and the first bearing in the first direction and includes at least a part of the inner peripheral surface of the hole.
The second threaded portion is formed on the outer peripheral portion of the first regulating member.
The first regulating member is a first one that protrudes outward from the outer peripheral surface of the second threaded portion in the radial direction of the output shaft at the first end portion on the upstream side in the first direction. Support structure for electric motors for bicycles, including additional protrusions. 前記第１の規制部材の前記第１の端部は、円環状に形成されている、請求項１または２に記載の自転車用電動モータの支持構造。 The support structure for an electric motor for a bicycle according to claim 1 or 2 , wherein the first end portion of the first regulating member is formed in an annular shape. 前記第１の規制部材の前記第１の端部は、前記第１の内輪体および前記第１の外輪体の他方と接触可能に対向する、請求項１〜３のいずれか一項に記載の自転車用電動モータの支持構造。 The first regulation member according to any one of claims 1 to 3 , wherein the first end portion of the first regulating member faces the other of the first inner ring body and the first outer ring body in a contactable manner. Support structure for electric motors for bicycles. ロータ、ステータ、および、前記ロータと共に回転する出力軸を含む自転車用電動モータの支持構造であって、
支持部と、
第１の内輪体、第１の外輪体、および、前記第１の内輪体と前記第１の外輪体との間に設けられる第１の転動体を含み、前記第１の内輪体および前記第１の外輪体の一方は、前記出力軸のうちの前記ロータに連結される第１の部分と他の部材に連結可能な第２の部分との間の部分を支持し、前記第１の内輪体および前記第１の外輪体の他方は、前記支持部に支持される第１の軸受と、
前記支持部とは別体に形成され、前記出力軸と同軸に配置され、前記出力軸の軸心に沿って前記第１の部分から前記第２の部分に向かう第１の方向への、前記第１の内輪体および前記第１の外輪体の他方の移動を規制する第１の規制部材と、を含み、
前記支持部は、前記出力軸と同軸に設けられる第１のねじ部を含み、
前記第１の規制部材は、前記第１のねじ部にねじ込まれる第２のねじ部と、前記第１の方向の上流側の第１の端部に設けられ、前記第２のねじ部の外周面よりも前記出力軸の径方向の外方に突出する第１の突出部とを含む、自転車用電動モータの支持構造。 A support structure for an electric bicycle motor including a rotor, a stator, and an output shaft that rotates with the rotor.
Support part and
A first inner ring body, a first outer ring body, and a first rolling element provided between the first inner ring body and the first outer ring body, the first inner ring body and the first outer ring body. One of the outer ring bodies of 1 supports a portion of the output shaft between the first portion connected to the rotor and the second portion connectable to the other member, and the first inner ring. The other of the body and the first outer ring body is a first bearing supported by the support portion and
The support portion is formed separately from the support portion, is arranged coaxially with the output shaft, and is oriented in a first direction from the first portion toward the second portion along the axis of the output shaft. Includes a first regulating member that regulates the movement of the other of the first inner ring and the first outer ring.
The support portion includes a first threaded portion provided coaxially with the output shaft.
The first regulating member is provided at a second threaded portion screwed into the first threaded portion and a first end portion on the upstream side in the first direction, and is provided on the outer periphery of the second threaded portion. A support structure for an electric motor for a bicycle, including a first protruding portion that protrudes outward in the radial direction of the output shaft from a surface. 前記第１の規制部材の前記第１の端部は、円環状に形成されている、請求項５に記載の自転車用電動モータの支持構造。 The support structure for an electric motor for a bicycle according to claim 5 , wherein the first end portion of the first regulating member is formed in an annular shape. 前記第１の規制部材の前記第１の端部は、前記第１の内輪体および前記第１の外輪体の他方と接触可能に対向する、請求項５または６に記載の自転車用電動モータの支持構造。 The electric motor for a bicycle according to claim 5 or 6 , wherein the first end portion of the first regulating member faces the other of the first inner ring body and the first outer ring body in a contactable manner. Support structure. 前記支持部は、前記出力軸が貫通する孔を含み、
前記第１の軸受は、前記孔に配置される、請求項５〜７のいずれか一項に記載の自転車用電動モータの支持構造。 The support includes a hole through which the output shaft penetrates.
The support structure for an electric motor for a bicycle according to any one of claims 5 to 7 , wherein the first bearing is arranged in the hole. 前記支持部は、
前記出力軸の径方向の外方から前記ロータおよび前記ステータを覆う外周部と、
前記孔が形成され、前記出力軸の軸心に沿う方向において前記ロータおよび前記ステータの第１の端面を覆う第１の側壁部と、
前記出力軸の軸心に沿う方向において前記ロータおよび前記ステータの第２の端面を覆う第２の側壁部と、を含む、請求項１〜４、８のいずれか一項に記載の自転車用電動モータの支持構造。 The support portion
From the outside in the radial direction of the output shaft, the outer peripheral portion covering the rotor and the stator, and
A first side wall portion in which the hole is formed and covers the rotor and the first end surface of the stator in a direction along the axis of the output shaft.
The electric motor for a bicycle according to any one of claims 1 to 4 , 8 including the rotor and a second side wall portion covering the second end surface of the stator in a direction along the axis of the output shaft. Motor support structure. 前記第２の側壁部は、前記外周部に着脱可能に取り付けられている、請求項９に記載の自転車用電動モータの支持構造。 The support structure for an electric motor for a bicycle according to claim 9 , wherein the second side wall portion is detachably attached to the outer peripheral portion. 前記第２の側壁部に設けられ、第２の内輪体、第２の外輪体、および、前記第２の内輪体と前記第２の外輪体との間に設けられる第２の転動体を含み、前記第２の内輪体および前記第２の外輪体の一方が前記出力軸に支持され、前記第２の内輪体および前記第２の外輪体の他方が前記第２の側壁部に支持される第２の軸受をさらに含む、請求項９または１０に記載の自転車用電動モータの支持構造。 A second inner ring body, a second outer ring body, and a second rolling element provided between the second inner ring body and the second outer ring body provided on the second side wall portion are included. One of the second inner ring body and the second outer ring body is supported by the output shaft, and the other of the second inner ring body and the second outer ring body is supported by the second side wall portion. The support structure for an electric motor for a bicycle according to claim 9 or 10 , further comprising a second bearing. 前記出力軸の外周部は、前記第２の軸受の前記第２の内輪体および前記第２の外輪体の一方に結合され、前記出力軸の前記第１の方向とは反対の第２の方向への移動を規制する第１の段差部を有する、請求項１１に記載の自転車用電動モータの支持構造。 The outer peripheral portion of the output shaft is coupled to one of the second inner ring body and the second outer ring body of the second bearing, and is in a second direction opposite to the first direction of the output shaft. The support structure for an electric motor for a bicycle according to claim 11 , which has a first step portion for restricting movement to the bicycle. 前記出力軸の外周部は、前記第１の部分と前記第１の段差部との間に、前記ロータの前記第２の方向への移動を規制する第２の段差部を有する、請求項１２に記載の自転車用電動モータの支持構造。 The outer peripheral portion of the output shaft, between the first portion and the first stepped portion, a second stepped portion for restricting the movement in the second direction of the rotor, according to claim 12 Support structure for electric motor for bicycles described in. ロータ、ステータ、および、前記ロータと共に回転する出力軸を含む自転車用電動モータの支持構造であって、
支持部と、
第１の内輪体、第１の外輪体、および、前記第１の内輪体と前記第１の外輪体との間に設けられる第１の転動体を含み、前記第１の内輪体および前記第１の外輪体の一方は、前記出力軸のうちの前記ロータに連結される第１の部分と他の部材に連結可能な第２の部分との間の部分を支持し、前記第１の内輪体および前記第１の外輪体の他方は、前記支持部に支持される第１の軸受と、
前記支持部とは別体に形成され、前記出力軸と同軸に配置され、前記出力軸の軸心に沿って前記第１の部分から前記第２の部分に向かう第１の方向への、前記第１の内輪体および前記第１の外輪体の他方の移動を規制する第１の規制部材と、を含み、
前記出力軸の外周部は、前記出力軸の前記第１の方向とは反対の第２の方向への移動を規制する第１の段差部と、前記第１の部分と前記第１の段差部との間に設けられ、前記ロータの前記第２の方向への移動を規制する第２の段差部とを有する、自転車用電動モータの支持構造。 A support structure for an electric bicycle motor including a rotor, a stator, and an output shaft that rotates with the rotor.
Support part and
A first inner ring body, a first outer ring body, and a first rolling element provided between the first inner ring body and the first outer ring body, the first inner ring body and the first outer ring body. One of the outer ring bodies of 1 supports a portion of the output shaft between the first portion connected to the rotor and the second portion connectable to the other member, and the first inner ring. The other of the body and the first outer ring body is a first bearing supported by the support portion and
The support portion is formed separately from the support portion, is arranged coaxially with the output shaft, and is oriented in a first direction from the first portion toward the second portion along the axis of the output shaft. Includes a first regulating member that regulates the movement of the other of the first inner ring and the first outer ring.
The outer peripheral portion of the output shaft includes a first step portion that regulates the movement of the output shaft in a second direction opposite to the first direction, and the first portion and the first step portion. A support structure for an electric motor for a bicycle, which is provided between the rotor and has a second step portion for restricting the movement of the rotor in the second direction. 前記支持部は、前記出力軸と同軸に設けられる第１のねじ部を含み、
前記第１の規制部材は、前記第１のねじ部にねじ込まれる第２のねじ部を含む、請求項１４に記載の自転車用電動モータの支持構造。 The support portion includes a first threaded portion provided coaxially with the output shaft.
The support structure for an electric motor for a bicycle according to claim 14 , wherein the first regulating member includes a second screw portion screwed into the first screw portion. 前記支持部は、前記出力軸が貫通する孔を含み、
前記第１の軸受は、前記孔に配置される、請求項１５に記載の自転車用電動モータの支持構造。 The support includes a hole through which the output shaft penetrates.
The support structure for an electric motor for a bicycle according to claim 15 , wherein the first bearing is arranged in the hole. 前記支持部は、
前記出力軸の径方向の外方から前記ロータおよび前記ステータを覆う外周部と、
前記孔が形成され、前記出力軸の軸心に沿う方向において前記ロータおよび前記ステータの第１の端面を覆う第１の側壁部と、
前記出力軸の軸心に沿う方向において前記ロータおよび前記ステータの第２の端面を覆う第２の側壁部と、を含む、請求項１６に記載の自転車用電動モータの支持構造。 The support portion
From the outside in the radial direction of the output shaft, the outer peripheral portion covering the rotor and the stator, and
A first side wall portion in which the hole is formed and covers the rotor and the first end surface of the stator in a direction along the axis of the output shaft.
The support structure for an electric motor for a bicycle according to claim 16 , further comprising a second side wall portion that covers the rotor and the second end surface of the stator in a direction along the axis of the output shaft. 前記第２の側壁部は、前記外周部に着脱可能に取り付けられている、請求項１７に記載の自転車用電動モータの支持構造。 The support structure for an electric motor for a bicycle according to claim 17 , wherein the second side wall portion is detachably attached to the outer peripheral portion. 前記第２の側壁部に設けられ、第２の内輪体、第２の外輪体、および、前記第２の内輪体と前記第２の外輪体との間に設けられる第２の転動体を含み、前記第２の内輪体および前記第２の外輪体の一方が前記出力軸に支持され、前記第２の内輪体および前記第２の外輪体の他方が前記第２の側壁部に支持される第２の軸受をさらに含む、請求項１７または１８に記載の自転車用電動モータの支持構造。 A second inner ring body, a second outer ring body, and a second rolling element provided between the second inner ring body and the second outer ring body provided on the second side wall portion are included. One of the second inner ring body and the second outer ring body is supported by the output shaft, and the other of the second inner ring body and the second outer ring body is supported by the second side wall portion. The support structure for an electric motor for a bicycle according to claim 17 or 18 , further comprising a second bearing. ロータ、ステータ、および、前記ロータと共に回転する出力軸を含む自転車用電動モータの支持構造であって、
支持部と、
第１の内輪体、第１の外輪体、および、前記第１の内輪体と前記第１の外輪体との間に設けられる第１の転動体を含み、前記第１の内輪体および前記第１の外輪体の一方は、前記出力軸のうちの前記ロータに連結される第１の部分と他の部材に連結可能な第２の部分との間の部分を支持し、前記第１の内輪体および前記第１の外輪体の他方は、前記支持部に支持される第１の軸受と、
前記支持部とは別体に形成され、前記出力軸と同軸に配置され、前記第１の内輪体および前記第１の外輪体の他方と接触可能に対向し、前記出力軸の軸心に沿って前記第１の部分から前記第２の部分に向かう第１の方向への、前記第１の内輪体および前記第１の外輪体の他方の移動を規制する第１の規制部材と、
前記支持部に設けられる第２の軸受と、を含み、
前記支持部は、
前記出力軸と同軸に設けられる第１のねじ部と、
前記出力軸が貫通する孔と、
前記出力軸の径方向の外方から前記ロータおよび前記ステータを覆う外周部と、
前記孔が形成され、前記出力軸の軸心に沿う方向において前記ロータおよび前記ステータの第１の端面を覆う第１の側壁部と、
前記出力軸の軸心に沿う方向において前記ロータおよび前記ステータの第２の端面を覆う第２の側壁部と、を含み、
前記第１の規制部材は、前記第１のねじ部にねじ込まれる第２のねじ部を含み、
前記第１の軸受は、前記孔に配置され、
前記第２の軸受は、前記第２の側壁部に設けられ、第２の内輪体、第２の外輪体、および、前記第２の内輪体と前記第２の外輪体との間に設けられる第２の転動体を含み、前記第２の内輪体および前記第２の外輪体の一方が前記出力軸に支持され、前記第２の内輪体および前記第２の外輪体の他方が前記第２の側壁部に支持され、
前記出力軸の外周部は、前記第２の軸受の前記第２の内輪体および前記第２の外輪体の一方に結合され、前記出力軸の前記第１の方向とは反対の第２の方向への移動を規制する第１の段差部を有し、前記第１の部分と前記第１の段差部との間に、前記ロータの前記第２の方向への移動を規制する第２の段差部を有する、自転車用電動モータの支持構造。 A support structure for an electric bicycle motor including a rotor, a stator, and an output shaft that rotates with the rotor.
Support part and
A first inner ring body, a first outer ring body, and a first rolling element provided between the first inner ring body and the first outer ring body, the first inner ring body and the first outer ring body. One of the outer ring bodies of 1 supports a portion of the output shaft between the first portion connected to the rotor and the second portion connectable to the other member, and the first inner ring. The other of the body and the first outer ring body is a first bearing supported by the support portion and
It is formed separately from the support portion, is arranged coaxially with the output shaft, faces the other of the first inner ring body and the first outer ring body so as to be in contact with each other, and is along the axis of the output shaft. A first regulating member that regulates the movement of the other inner ring body and the first outer ring body in the first direction from the first portion to the second portion.
Including a second bearing provided on the support portion,
The support portion
A first threaded portion coaxially provided with the output shaft,
The hole through which the output shaft penetrates and
From the outside in the radial direction of the output shaft, the outer peripheral portion covering the rotor and the stator, and
A first side wall portion in which the hole is formed and covers the rotor and the first end surface of the stator in a direction along the axis of the output shaft.
Includes the rotor and a second side wall covering the second end face of the stator in a direction along the axis of the output shaft.
The first regulating member includes a second threaded portion screwed into the first threaded portion.
The first bearing is arranged in the hole and
The second bearing is provided on the second side wall portion, and is provided on the second inner ring body, the second outer ring body, and between the second inner ring body and the second outer ring body. A second rolling element is included, one of the second inner ring body and the second outer ring body is supported by the output shaft, and the other of the second inner ring body and the second outer ring body is the second. Supported by the side wall of the
The outer peripheral portion of the output shaft is coupled to one of the second inner ring body and the second outer ring body of the second bearing, and is in a second direction opposite to the first direction of the output shaft. A second step that regulates the movement of the rotor in the second direction between the first portion and the first step portion, which has a first step portion that regulates the movement to the rotor. Support structure of electric motor for bicycles having a part. 前記第２の側壁部は、前記外周部に着脱可能に取り付けられている、請求項２０に記載の自転車用電動モータの支持構造。 The support structure for an electric motor for a bicycle according to claim 20 , wherein the second side wall portion is detachably attached to the outer peripheral portion. 前記第１のねじ部は、前記第１の方向において前記第２の部分と前記第１の軸受との間に設けられ、前記孔の内周面の少なくとも一部を含み、
前記第１の規制部材は、筒状に形成され、前記第２のねじ部は、前記第１の規制部材の外周部に形成されている、請求項１６〜２１のいずれか一項に記載の自転車用電動モータの支持構造。 The first threaded portion is provided between the second portion and the first bearing in the first direction and includes at least a part of the inner peripheral surface of the hole.
The first regulation member is formed in a tubular shape, and the second screw portion is formed on an outer peripheral portion of the first regulation member, according to any one of claims 16 to 21 . Support structure for electric motors for bicycles. 前記第１の規制部材は、前記第１の方向の上流側の第１の端部に、前記第２のねじ部の外周面よりも前記出力軸の径方向の外方に突出する第１の突出部をさらに含む、請求項２２に記載の自転車用電動モータの支持構造。 The first regulating member is a first end portion on the upstream side in the first direction, which projects outward from the outer peripheral surface of the second screw portion in the radial direction of the output shaft. The support structure for an electric motor for a bicycle according to claim 22 , further comprising a protrusion. 前記第１の規制部材の前記第１の端部は、円環状に形成されている、請求項２３に記載の自転車用電動モータの支持構造。 The support structure for an electric motor for a bicycle according to claim 23 , wherein the first end portion of the first regulating member is formed in an annular shape. 前記第１の規制部材の前記第１の端部は、前記第１の内輪体および前記第１の外輪体の他方と接触可能に対向する、請求項２３または２４に記載の自転車用電動モータの支持構造。 The electric motor for a bicycle according to claim 23 or 24 , wherein the first end portion of the first regulating member faces the other of the first inner ring body and the first outer ring body in a contactable manner. Support structure. 前記第１の規制部材は、前記第２のねじ部の前記第１の方向の下流側に設けられる把持部をさらに含む、請求項１〜１３、１６〜２５のいずれか一項に記載の自転車用電動モータの支持構造。 The bicycle according to any one of claims 1 to 13 , 16 to 25 , wherein the first regulating member further includes a grip portion provided on the downstream side of the second screw portion in the first direction. Support structure for electric motors. 前記把持部は、所定の工具を係合可能な形状を有する、請求項２６に記載の自転車用電動モータの支持構造。 The support structure for an electric motor for a bicycle according to claim 26 , wherein the grip portion has a shape capable of engaging a predetermined tool. 前記出力軸の軸心に沿う方向への前記第１の規制部材の移動を規制する第２の規制部材をさらに含む、請求項１〜１３、１５〜２７のいずれか一項に記載の自転車用電動モータの支持構造。 The bicycle according to any one of claims 1 to 13 , 15 to 27 , further comprising a second regulating member that regulates the movement of the first regulating member in a direction along the axis of the output shaft. Support structure for electric motor. 前記第２のねじ部は、前記第１のねじ部から前記第１の方向の下流側に突出する第２の突出部を含み、
前記第２の規制部材は、前記第２の突出部に取り付けられる、請求項２８に記載の自転車用電動モータの支持構造。 The second threaded portion includes a second protruding portion projecting downstream from the first threaded portion in the first direction.
The support structure for an electric motor for a bicycle according to claim 28 , wherein the second regulating member is attached to the second protrusion. 前記第２の規制部材は、前記第２の突出部にねじ込まれる第３のねじ部を含む、請求項２９に記載の自転車用電動モータの支持構造。 The support structure for an electric motor for a bicycle according to claim 29 , wherein the second regulating member includes a third threaded portion screwed into the second protruding portion. 前記第１の内輪体および前記第１の外輪体の他方と、前記第１の規制部材とは、一体に形成されている、請求項１〜３０のいずれか一項に記載の自転車用電動モータの支持構造。 The electric motor for a bicycle according to any one of claims 1 to 30 , wherein the other of the first inner ring body and the first outer ring body and the first regulating member are integrally formed. Support structure. 前記出力軸と同軸に設けられ、前記ロータと前記第１の軸受の前記第１の内輪体および前記第１の外輪体の他方との間に挟まれるスリーブをさらに含む、請求項１〜３１のいずれか一項に記載の自転車用電動モータの支持構造。 Claims 1-31 further include a sleeve that is coaxial with the output shaft and is sandwiched between the rotor and the first inner ring of the first bearing and the other of the first outer ring. The support structure for the electric motor for a bicycle according to any one of the items. 請求項１〜３２のいずれか一項に記載の自転車用電動モータの支持構造と、前記ロータ、前記ステータ、および、前記出力軸を含む自転車用電動モータと、を含み、自転車の推進をアシスト可能に構成される、自転車用ドライブユニット。 The support structure for the electric motor for a bicycle according to any one of claims 1 to 32 , and the electric motor for a bicycle including the rotor, the stator, and the output shaft can be included to assist the propulsion of the bicycle. A bicycle drive unit that consists of. 前記出力軸の径方向において、前記ロータは、前記ステータの内側に配置されている、請求項３３に記載の自転車用ドライブユニット。 The bicycle drive unit according to claim 33 , wherein the rotor is arranged inside the stator in the radial direction of the output shaft. 前記自転車のクランク軸が設けられるハウジングをさらに含み、
前記支持部の少なくとも一部は、前記ハウジングと一体に形成される、請求項３３または３４に記載の自転車用ドライブユニット。 Further including a housing provided with the crankshaft of the bicycle.
The bicycle drive unit according to claim 33 or 34 , wherein at least a part of the support portion is formed integrally with the housing.
JP2016194072A 2016-09-30 2016-09-30 Support structure of electric motor for bicycle and drive unit for bicycle including this Active JP6753752B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2016194072A JP6753752B2 (en) 2016-09-30 2016-09-30 Support structure of electric motor for bicycle and drive unit for bicycle including this
CN201710891747.4A CN107878663A (en) 2016-09-30 2017-09-27 Bicycle use electro-motor support structure and the Bicycle drive unit for including it
DE102017217307.6A DE102017217307A1 (en) 2016-09-30 2017-09-28 BICYCLE ELECTRIC MOTOR CARRYING STRUCTURE AND BICYCLE DRIVE UNIT, INCLUDING BIKE ELECTRIC MOTOR CARRYING STRUCTURE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016194072A JP6753752B2 (en) 2016-09-30 2016-09-30 Support structure of electric motor for bicycle and drive unit for bicycle including this

Publications (2)

Publication Number Publication Date
JP2018054085A JP2018054085A (en) 2018-04-05
JP6753752B2 true JP6753752B2 (en) 2020-09-09

Family

ID=61623433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2016194072A Active JP6753752B2 (en) 2016-09-30 2016-09-30 Support structure of electric motor for bicycle and drive unit for bicycle including this

Country Status (3)

Country Link
JP (1) JP6753752B2 (en)
CN (1) CN107878663A (en)
DE (1) DE102017217307A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7023576B2 (en) * 2018-03-16 2022-02-22 ジヤトコ株式会社 Motor shaft support structure
KR102628788B1 (en) * 2018-07-11 2024-01-24 엘지이노텍 주식회사 Motor
JP7241326B2 (en) * 2018-11-13 2023-03-17 パナソニックＩｐマネジメント株式会社 Motor unit and electric bicycle
JP2020089205A (en) * 2018-11-30 2020-06-04 トヨタ自動車株式会社 Rotation axis support structure
WO2020166532A1 (en) * 2019-02-13 2020-08-20 日本電産株式会社 Motor unit
RU193980U1 (en) * 2019-08-09 2019-11-22 Александр Александрович Дмитрук Non-contact dc motor
JP7324664B2 (en) * 2019-09-12 2023-08-10 株式会社シマノ drive unit
JP7430110B2 (en) 2020-05-07 2024-02-09 ヤマハ発動機株式会社 Drive units and electric auxiliary vehicles
JP7309291B2 (en) * 2020-05-07 2023-07-18 ヤマハ発動機株式会社 Drive units and electric auxiliary vehicles
CN112065860B (en) * 2020-09-24 2022-03-15 哈尔滨电气动力装备有限公司 Thin oil lubricating structure of rolling bearing
TWI764545B (en) * 2021-01-28 2022-05-11 太康精密股份有限公司 Electric power-assisted bicycle bottom bracket to increase pedal feeling device

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3578829A (en) * 1968-11-26 1971-05-18 Matsushita Electric Ind Co Ltd Bottom bracket for bicycle
US5984528A (en) * 1998-07-01 1999-11-16 Shimano Inc. Bearing assembly for bicycle parts
JP3939862B2 (en) * 1998-08-18 2007-07-04 ヤマハ発動機株式会社 Motor drive unit for electric bicycle
JP2007221978A (en) * 2006-02-20 2007-08-30 Hitachi Car Eng Co Ltd Brushless motor
JP4936806B2 (en) 2006-07-03 2012-05-23 パナソニック株式会社 Electric bicycle motor drive unit and electric bicycle
JP2011207362A (en) * 2010-03-30 2011-10-20 Honda Motor Co Ltd Motor shaft supporting structure in assist unit
CN202268775U (en) * 2011-08-12 2012-06-06 久鼎金属实业股份有限公司 Power output mechanism of electric power-assisted bicycle
EP2743168B1 (en) * 2012-12-17 2020-06-10 Yamaha Hatsudoki Kabushiki Kaisha Driving unit and electric assist bicycle
CN203698569U (en) * 2013-11-18 2014-07-09 新安乃达驱动技术(上海)有限公司 Electric power-assisting bicycle and built-in motor drive system thereof
US9228613B2 (en) * 2014-02-24 2016-01-05 Shimano Inc. Bicycle bottom bracket assembly
CN104165191B (en) * 2014-07-07 2017-04-26 国家电网公司 Bearing spacing and adjusting device
CN204004199U (en) * 2014-08-12 2014-12-10 浙江一机机床制造有限公司 A kind of Worm and worm-wheel gearing

Also Published As

Publication number Publication date
DE102017217307A1 (en) 2018-04-05
JP2018054085A (en) 2018-04-05
CN107878663A (en) 2018-04-06

Similar Documents

Publication Publication Date Title
JP6753752B2 (en) Support structure of electric motor for bicycle and drive unit for bicycle including this
US8186467B2 (en) Wheel rotating device for in-wheel motor vehicle
JP4724075B2 (en) Wheel rotation device
US8919478B2 (en) Bicycle drive unit
US8950531B2 (en) Internal motorized bicycle hub
TW201634335A (en) Drive assembly for a manually driven vehicle with an electric auxiliary drive, method for regulating a drive assembly of this type, and use
JP6169531B2 (en) Bicycle drive unit
CN106321741A (en) Planetary gear train for transmission of motor
JP2017512708A (en) Rear wheel axle, bicycle frame and bicycle rear wheel
JP2015089188A (en) In-wheel motor and in-wheel motor drive unit
JP2012090495A (en) Motor and electrically driven power steering device
WO2018043398A1 (en) Electric motor-equipped wave gear speed reducer
JP2009160721A (en) Motorized rotary joint
JP2012244810A (en) In-wheel motor
JP2016203707A (en) Drive unit
TWM462709U (en) Bicycle drive unit
JP6006137B2 (en) Drive device
JP2012228966A (en) In-wheel motor
JPH09132040A (en) Wheel motor with reduction gear
CN102756640A (en) Wheel driving apparatus
JP2009159791A (en) Motorcycle and driving mechanism thereof
JP2011093373A (en) Hub for in-wheel motor, and in-wheel motor
JP6254494B2 (en) Motor built-in hub structure and bicycle
JP2012136081A (en) Internal motorized bicycle hub
JP5659588B2 (en) Wheel bearing and electric vehicle drive device

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20171016

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20180907

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20190807

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20190827

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20191018

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20191224

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20200210

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20200401

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20200626

A911 Transfer to examiner for re-examination before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20200708

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20200818

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20200820

R150 Certificate of patent or registration of utility model

Ref document number: 6753752

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250