JPWO2018219620A5

JPWO2018219620A5 -

Info

Publication number: JPWO2018219620A5
Application number: JP2019566071A
Authority: JP
Publication date: 2022-08-17
Anticipated expiration: 2038-05-11

Description

本発明の随意的な特徴によれば、別個に又は組み合わせて、
－ベアリングの内輪は、前記スペーサを介して前記中空支持体の内壁と間接的に当接し、前記スペーサは、回転シャフトが通過する管状要素であり、
－回転シャフトに対する前記中空支持体の軸方向ロックは、前記中空支持体を回転シャフトに溶接することによって得られ、
－回転シャフトに対する前記中空支持体の軸方向ロックは、回転シャフトの溝内に受けられて中空支持体と直接に又はスペーサ部品を介して間接的に当接する弾性リングによってもたらされ、前記弾性リングは、前記座部から離れる前記中空支持体の動きに抗する前記中空支持体のための当接部を構成し、
－回転シャフトに対する前記中空支持体の軸方向ロックは、中空支持体と直接に又はスペーサ部品を介して間接的に当接するビードによってもたらされ、前記ビードは、回転シャフトと一体部品を成すとともに、前記座部から離れる前記中空支持体の動きに抗する前記中空支持体のための当接部を構成し、
－中空支持体が回転シャフト上へと収縮して取り付けられ、
－ロータの角度位置を決定するデバイスが、ロータと共に回転するように拘束される多極磁石と、１つ以上のホール効果センサとを含み、回転シャフトに対する前記中空支持体の軸方向ロックは、回転シャフトに対して前記多極磁石を軸方向でロックすることにより及び前記多極磁石に当接する前記中空支持体によってもたらされ、前記多極磁石は、前記座部から離れる前記中空支持体の動きに抗する前記中空支持体のための当接部を構成し、
－回転シャフトに対する多極磁石の軸方向ロックは、回転シャフトの溝内に受けられる弾性リングによって又は回転シャフトと一体部品を成すビードの形成によってもたらされ、前記弾性リング又はビードは、前記座部から離れる前記中空支持体の動きに抗する前記多極磁石のための当接部を構成し、
－回転シャフトに対する多極磁石の軸方向ロックは、前記多極磁石を回転シャフトに溶接することによって又は前記多極磁石を回転シャフト上へと収縮して取り付けることによってもたらされ、
－前記中空支持体は、回転シャフトの電気モータ長手方向端部を越えて軸方向に延び、
－ケーシングが電気モータ及び前記減速ギア機構のための保護エンベロープを形成し、ケーシングの前記エンベロープは、内側に突出してロータの前記内側凹部に入り込むとともに前記ベアリングのための前記座部を支持する部分を含み、前記中空支持体がケーシングの前記突出部分を覆って閉じるようになり、
－回転シャフトは、回転シャフトの２つの長手方向端部に配置される２つのベアリングによってのみ回転が案内され、２つのベアリングは、前記中空支持体により覆って閉じられる前記ベアリングと、回転シャフトの他の減速機構長手方向端部にある他のベアリングとを含む。 According to an optional feature of the invention, separately or in combination,
- the inner ring of the bearing indirectly abuts the inner wall of the hollow support via said spacer, said spacer being a tubular element through which the rotating shaft passes;
- the axial locking of said hollow support to the rotating shaft is obtained by welding said hollow support to the rotating shaft;
- the axial locking of said hollow support to the rotating shaft is provided by an elastic ring received in a groove of the rotating shaft and abutting the hollow support directly or indirectly via a spacer part, said elastic ring constitutes an abutment for the hollow support that resists movement of the hollow support away from the seat;
- the axial locking of said hollow support to the rotating shaft is provided by a bead abutting said hollow support directly or indirectly via a spacer part, said bead forming an integral part with said rotating shaft, forming an abutment for the hollow support that resists movement of the hollow support away from the seat;
- the hollow support is shrunk and mounted onto the rotating shaft,
- a device for determining the angular position of the rotor comprises a multi-pole magnet constrained to rotate with the rotor and one or more Hall effect sensors, wherein the axial locking of said hollow support to the rotating shaft rotates Effected by axial locking of the multipole magnet to the shaft and by the hollow support abutting the multipole magnet, the multipole magnet moves the hollow support away from the seat. forming an abutment for said hollow support against
- the axial locking of the multipole magnet to the rotating shaft is provided by an elastic ring received in a groove of the rotating shaft or by forming a bead integral with the rotating shaft, said elastic ring or bead being attached to said seat; forming an abutment for the multipole magnet that resists movement of the hollow support away from
- axial locking of the multi-pole magnet to the rotating shaft is provided by welding said multi-pole magnet to the rotating shaft or by shrinking said multi-pole magnet onto the rotating shaft;
- said hollow support extends axially beyond the electric motor longitudinal end of the rotating shaft,
- a casing forming a protective envelope for the electric motor and said reduction gear mechanism, said envelope of casing protruding inwardly into said inner recess of the rotor and having a portion supporting said seat for said bearing; wherein the hollow support closes over the projecting portion of the casing;
- the rotatable shaft is guided in rotation only by two bearings arranged at the two longitudinal ends of the rotatable shaft, said bearings being closed over by said hollow support, and the other of the rotatable shaft; and other bearings at the longitudinal ends of the reduction mechanism.

この中空支持体２５は、中空支持体２５を回転シャフト２２に固定するためのスリーブ２６を更に含んでもよい。このスリーブ２６は、減速ギア機構３とベアリング２３との間の回転シフト２２上の中間位置に固定されるようになる。スリーブ２６の内径は、この中間位置での回転シャフトの外径に適合するように調整されてもよい。これは、中空支持体２５を前記回転シャフト２２上へと収縮して取り付けることにより組み立てを可能にする緊密な嵌合であってもよい。このスリーブ２６は、再びシャフト２２に接着結合されてもよい。 This hollow support 25 may further comprise a sleeve 26 for securing the hollow support 25 to the rotating shaft 22 . This sleeve 26 becomes fixed in an intermediate position on the rotary shift 22 between the reduction gear mechanism 3 and the bearing 23 . The inner diameter of sleeve 26 may be adjusted to match the outer diameter of the rotating shaft at this intermediate position. This may be a tight fit that allows assembly by shrinking the hollow support 25 onto said rotating shaft 22 . This sleeve 26 may again be adhesively bonded to the shaft 22 .

特に前記スリーブ２６を回転シャフト２２上へと収縮して取り付けることにより、中空支持体２５が回転シャフト２２上へと収縮して取り付けられてもよい。この収縮して取り付けることは、それ自体、前記中空支持体２５の軸方向ロックを達成するのに十分であり得る。他の代替案によれば、軸方向ロックは、前述の解決策、特に回転シャフトに対する前記中空支持体の溶接、弾性リング９の付加、又は、回転シャフトと一体部品を成すビードの存在のうちの１つと組み合わせて得られる。 In particular, hollow support 25 may be shrunk onto rotatable shaft 22 by shrunk fitting of said sleeve 26 onto rotatable shaft 22 . This shrink fitting may itself be sufficient to achieve axial locking of said hollow support 25 . According to other alternatives, the axial locking is one of the solutions mentioned above, in particular the welding of said hollow support to the rotating shaft, the addition of an elastic ring 9 or the presence of a bead integral with the rotating shaft. Obtained in combination with one.

更に、多極磁石５は、前記多極磁石５を回転シャフト２２に溶接することにより又は前記多極磁石５を回転シャフト２２上へと収縮して取り付けることにより回転シャフト２２に対して軸方向でロックされてもよい。 In addition, the multipole magnet 5 is axially attached to the rotating shaft 22 by welding said multipole magnet 5 to the rotating shaft 22 or by shrinking said multipole magnet 5 onto the rotating shaft 22 . May be locked.

Claims

A gear motor (1) for a motor vehicle wiper system, comprising:
- an electric motor (2),
- a rotor (20) comprising magnetic elements (29);
- a stator (21) comprising windings for electromagnetic excitation of said rotor;
- a rotating shaft (22) fastened to said rotor;
an electric motor (2) comprising
- a reduction mechanism (3) connecting said rotating shaft (22) and the output shaft of said gear motor;
including
A bearing (23) having an outer ring and an inner ring mounted on said rotating shaft (22) guides said rotating shaft (22) at one of its longitudinal ends, said rotor (20) and said stator (21) combination is housed in an inner recess of said rotor (20) and a hollow support (25) holds said magnetic element (29). said hollow support (25) supporting and coaxially arranged with said rotating shaft (22) and constrained to rotate with said rotating shaft (22), said hollow support (25) for driving said electric motor (20) of said rotating shaft (20); 2) it closes over said bearing (23) guiding the longitudinal ends, said bearing (23) engaging with said outer ring of said bearing (23) on one side of said bearing (23); The axial position of the bearing (23) on the rotating shaft (22), on the one hand, causes the hollow support (25) to move toward the rotating shaft (22). Locked by axial locking on the shaft (22), on the other hand, of said hollow support (25) on the side of said bearing (23) opposite to the side engaging said seat (41). locked by the inner ring of the bearing (23) abutting the inner wall, the inner ring of the bearing (23) directly with the inner wall of the hollow support (25) or a spacer in the hollow support (25); (8), said spacer (8) abutting said inner ring and said inner wall of said hollow support (25) ,
A device for determining the angular position of the rotor, comprising a multi-pole magnet (5) constrained to rotate with the rotor (20) and one or more Hall effect sensors, relative to the rotating shaft (22). The axial locking of the hollow support (25) axially locks the multi-pole magnet (5) to the rotating shaft (22) and abuts the multi-pole magnet (5). A gear motor (a gear motor ( 1).

The inner ring of the bearing (23) indirectly abuts the inner wall of the hollow support (25) via the spacer (8) through which the rotating shaft (22) passes. 2. A gearmotor (1) according to claim 1, which is a tubular element that

3. A gearmotor according to claim 1 or 2 , wherein the hollow support (25) is mounted shrinking onto the rotating shaft (22).

Axial locking of the multipole magnet (5) to the rotating shaft (22) is provided by a resilient ring (9) received in a groove of the rotating shaft or by forming a bead integral with the rotating shaft. and the elastic ring or the bead constitutes an abutment for the multipole magnet that resists movement of the hollow support away from the seat (41) . A gearmotor as described above .

Axial locking of the multi-pole magnet to the rotating shaft (22) is provided by welding the multi-pole magnet to the rotating shaft or by shrinking the multi-pole magnet onto the rotating shaft. 5. A gearmotor according to any one of claims 1 to 4, wherein

Said hollow support (25) comprises:
- said rotary shaft (22) at an intermediate position on said shaft between said reduction gear mechanism (3) and said bearing (23) guiding the electric motor (2) longitudinal end of said rotary shaft (20); a sleeve (26) for securing said hollow support against
- a substantially cylindrical support length (27) around which the magnetic elements (29) of the rotor are fastened;
- a connecting length connecting said sleeve (26) and said cylindrical support length (27);
6. A gearmotor according to any one of claims 1 to 5 , comprising:

The inner ring of the bearing (23) is directly with the inner wall of the hollow support (25) consisting of the connecting length connecting the sleeve (26) and the cylindrical support length (27). 7. A gearmotor according to claim 6 , wherein said connecting length portion is formed so as not to contact said outer ring of said bearing (23).

Said sleeve (26), said substantially cylindrical support length (27) and said connecting length connecting said sleeve (26) and said cylindrical support length (27) are molded 8. A gearmotor according to claim 6 or 7 , consisting of a one-piece element such as a sheet metal plate that has been pressed together.

9. A gearmotor according to any one of the preceding claims, wherein the hollow support (25) extends axially beyond the electric motor longitudinal ends of the rotating shaft (22).

A casing (4) forms a protective envelope for the electric motor (2) and the reduction gear mechanism (3), the envelope of the casing (4) projecting inwardly to the inside of the rotor (20). comprising a protruding portion (40) that penetrates into a recess and supports said seat (41) for said bearing (23), said hollow support (25) supporting said protruding portion (40) of said casing (4); 10. A gearmotor according to any one of the preceding claims, adapted to cover and close.

Said rotating shaft (22) is guided in rotation only by two bearings (23, 24) arranged at two said longitudinal ends of said rotating shaft (22), said two bearings being connected to said hollow support. 11. Any one of claims 1 to 10 , comprising said bearing (23) covered and closed by a body (25) and another bearing (24) at the longitudinal end of another reduction mechanism (3) of said rotary shaft. or the gearmotor according to claim 1.