WO2016103619A1 - Dispositif de détection de position de rotation pour moteur à combustion interne - Google Patents

Dispositif de détection de position de rotation pour moteur à combustion interne Download PDF

Info

Publication number
WO2016103619A1
WO2016103619A1 PCT/JP2015/006212 JP2015006212W WO2016103619A1 WO 2016103619 A1 WO2016103619 A1 WO 2016103619A1 JP 2015006212 W JP2015006212 W JP 2015006212W WO 2016103619 A1 WO2016103619 A1 WO 2016103619A1
Authority
WO
WIPO (PCT)
Prior art keywords
wall
rotational position
connecting portion
internal combustion
combustion engine
Prior art date
Application number
PCT/JP2015/006212
Other languages
English (en)
Japanese (ja)
Inventor
優太 小寺
田中　良一
金光　憲太郎
Original Assignee
デンソートリム株式会社
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 デンソートリム株式会社 filed Critical デンソートリム株式会社
Priority to JP2016533747A priority Critical patent/JP6112259B2/ja
Priority to CN201580070149.XA priority patent/CN107112862B/zh
Publication of WO2016103619A1 publication Critical patent/WO2016103619A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos

Definitions

  • the invention disclosed herein relates to a rotational position detection device for an internal combustion engine.
  • Patent Documents 1-4 disclose a rotating electrical machine for an internal combustion engine connected to the internal combustion engine. These rotating electric machines can function as a generator and / or an electric motor (starter). Patent Document 3 and Patent Document 4 disclose a configuration in which one bolt is used to fix the sensor unit to the stator core.
  • the contents of the prior art documents listed as the prior art are introduced or incorporated by reference as an explanation of the technical elements described in this specification.
  • JP 2013-27252 A JP 2013-233030 A Japanese Patent No. 5064279 Japanese Patent No. 5097654
  • Patent Document 3 only one location on the radially inner side of the sensor unit is fixed to the stator core with bolts. Although the stator core and the sensor unit are engaged with each other by the finger-shaped sensor housing portion, the sensor unit may be displaced in the circumferential direction due to wear or deformation. Although patent document 4 has a protrusion part also in the both ends of the circumferential direction of a sensor unit, there is no description regarding those uses. And since the stator coil is provided in those positions, a sensor unit cannot be fixed to a stator core. Therefore, the sensor may not be held at a predetermined position due to the displacement of the sensor unit.
  • the sensor unit described in Patent Documents 1-4 has a shallow container portion between the radially inner fixed portion and the radially outer finger-shaped sensor housing portion.
  • the container part has a function as a container for storing electrical parts and a function for holding the sensor storage part in the axial direction.
  • the shallow container portion may be deformed to warp.
  • the side wall and the bottom wall of the container part may be deformed so that the open end of the container part opens.
  • the deformation of the shallow container portion causes the sensor housing portion to move in the axial direction, and thus there is a possibility that the sensor cannot be held in a predetermined position.
  • One of the objects of the invention is to provide a rotational position detecting device for an internal combustion engine that can accurately position a sensor at a specified position.
  • Another object of the invention is to provide a rotational position detecting device for an internal combustion engine that can accurately position a sensor in the axial direction.
  • Another object of the invention is to provide a rotational position detecting device for an internal combustion engine that can accurately position a sensor in the circumferential direction.
  • Still another object of the present invention is to provide a rotational position detecting device for an internal combustion engine in which deformation affecting the position of the sensor is suppressed.
  • a rotational position detection device for an internal combustion engine is provided.
  • an electric power indicating a rotational position of a rotor is detected by detecting a magnetic flux of a magnet (23) provided in a stator core (32) of a rotating electrical machine (10) interlocked with an internal combustion engine (12).
  • a sensor (43) that is disposed between two adjacent magnetic poles (32a) of the stator core and detects a magnetic flux change of the rotor, and the sensor and an electric connected to the sensor
  • At least one bolt hole (81, 82) that is disposed radially inward of the container and receives the fixing bolt (44), and is fastened and fixed to the stator core by the fixing bolt.
  • a connecting portion (55, 255, 355, 455) provided between the tightening portion (54) and the inner wall (62) positioned radially inward of the side wall and the tightening portion to connect the inner wall and the tightening portion.
  • the connecting portion includes a first end connecting portion (84) for connecting one end portion in the circumferential direction of the inner wall and the fastening portion, and the other in the circumferential direction of the inner wall.
  • the second end connecting portion (85) for connecting the end portion and the tightening portion, and the first end connecting portion and the second end connecting portion, and connecting the inner wall and the tightening portion.
  • at least one intermediate connecting portion (86-88, 91, 92, 93e, 94e, 95-98).
  • the container and the tightening portion are connected by the connecting portion.
  • the connection part has the intermediate connection part positioned among them further. Since the intermediate connecting portion connects the inner wall and the tightening portion, the inner wall and the tightening portion are maintained in a predetermined positional relationship. As a result, the inner wall and the tightening portion are accurately positioned in a predetermined positional relationship. Therefore, the positional deviation between the inner wall and the tightening portion and the positional deviation of the sensor due to the change in the positional relation are suppressed.
  • One disclosed invention is to detect the magnetic flux of the magnet (23) provided in the stator core (32) of the rotating electrical machine (10) linked to the internal combustion engine (12) and provided in the rotor (21).
  • a rotational position detecting device for an internal combustion engine that outputs an electrical signal indicating a rotational position
  • a sensor (43) that is disposed between two adjacent magnetic poles (32a) of a stator core and detects a change in magnetic flux of the rotor
  • a sensor for accommodating an electric circuit component (42) connected to the housing, and the case has a bottom wall (61) and side walls (62-65) surrounding the bottom wall, and accommodates the electric circuit component.
  • the bottom wall has radial ribs (74, 75, 76) extending above the bottom wall radially outward from the inner wall. It is characterized by that.
  • the rib provided on the bottom wall of the container suppresses deformation of the container. Thereby, the position shift of the sensor due to the deformation of the container is suppressed.
  • One disclosed invention is to detect the magnetic flux of the magnet (23) provided in the stator core (32) of the rotating electrical machine (10) linked to the internal combustion engine (12) and provided in the rotor (21).
  • a rotational position detecting device for an internal combustion engine that outputs an electrical signal indicating a rotational position
  • a sensor (43) that is disposed between two adjacent magnetic poles (32a) of a stator core and detects a change in magnetic flux of the rotor
  • a sensor for accommodating an electric circuit component (42) connected to the housing, and the case has a bottom wall (61) and side walls (62-65) surrounding the bottom wall, and accommodates the electric circuit component.
  • the container (52) has two bolt holes (81, 82) arranged radially inward from the container and spaced apart by a fixing bolt (44) received in the bolt hole.
  • a fastening part (54) fastened and fixed to the data core, and a connecting part (55, 255, 355, 455, 555, 655) for connecting the fastening part and the inner wall (62) located radially inside of the side wall. , 755).
  • the case is fastened and fixed by the two bolt holes. Therefore, the case is firmly fixed in the axial direction. As a result, the positional deviation of the sensor is suppressed.
  • One disclosed invention is to detect the magnetic flux of the magnet (23) provided in the stator core (32) of the rotating electrical machine (10) linked to the internal combustion engine (12) and provided in the rotor (21).
  • a rotational position detecting device for an internal combustion engine that outputs an electrical signal indicating a rotational position
  • a sensor (43) that is disposed between two adjacent magnetic poles (32a) of a stator core and detects a change in magnetic flux of the rotor
  • a sensor for accommodating an electric circuit component (42) connected to the housing, and the case has a bottom wall (61) and side walls (62-65) surrounding the bottom wall, and accommodates the electric circuit component.
  • a cover (53) that extends from the bottom wall and accommodates the sensor, and is provided radially inward from the cover, between the bottom wall and the cover It has the plate-shaped reinforcement rib (53d) which spreads, It is characterized by the above-mentioned.
  • the cover extending to accommodate the sensor is reinforced by the reinforcing rib provided on the radially inner side. Therefore, deformation of the cover is suppressed, and displacement of the sensor is suppressed.
  • FIG. 7 is a cross-sectional view taken along line VII-VII of the case of the first embodiment. It is a perspective view of the case of 1st Embodiment.
  • a rotating electrical machine for an internal combustion engine (hereinafter simply referred to as a rotating electrical machine) 10 is also called a generator motor or an AC generator starter.
  • the rotating electrical machine 10 is electrically connected to an electric circuit 11 including an inverter circuit (INV) and a control device (ECU).
  • the electric circuit 11 provides a three-phase power conversion circuit.
  • An example of the use of the rotating electrical machine 10 is a generator motor of an internal combustion engine 12 for a vehicle.
  • the rotating electrical machine 10 can be used for a motorcycle, for example.
  • the electrical circuit 11 provides a rectifier circuit that rectifies the AC power that is output when the rotating electrical machine 10 functions as a generator and supplies power to an electrical load including a battery.
  • the electric circuit 11 provides a signal processing circuit that receives a reference position signal for ignition control supplied from the rotating electrical machine 10.
  • the electric circuit 11 may provide an ignition controller that performs ignition control.
  • the electric circuit 11 provides a drive circuit that causes the rotating electrical machine 10 to function as an electric motor.
  • the electrical circuit 11 receives from the rotating electrical machine 10 a rotational position signal for causing the rotating electrical machine 10 to function as an electric motor.
  • the electrical circuit 11 causes the rotating electrical machine 10 to function as an electric motor by controlling energization to the rotating electrical machine 10 according to the detected rotational position.
  • the rotating electrical machine 10 is assembled to the internal combustion engine 12.
  • the internal combustion engine 12 includes a body 13 and a rotary shaft 14 that is rotatably supported by the body 13 and rotates in conjunction with the internal combustion engine 12.
  • the rotating electrical machine 10 is assembled to the body 13 and the rotating shaft 14.
  • the body 13 is a structure such as a crankcase or a transmission case of the internal combustion engine 12.
  • the rotating shaft 14 is a crankshaft of the internal combustion engine 12 or a rotating shaft interlocking with the crankshaft.
  • the rotating shaft 14 rotates when the internal combustion engine 12 is operated, and drives the rotating electrical machine 10 to function as a generator.
  • the rotating shaft 14 is a rotating shaft that can start the internal combustion engine 12 by the rotation of the rotating electrical machine 10 when the rotating electrical machine 10 functions as an electric motor.
  • the rotating shaft 14 is a rotating shaft that can assist (assist) the rotation of the internal combustion engine 12 by the rotation of the rotating electrical machine 10 when the rotating electrical machine 10 functions as an electric motor.
  • the rotating electrical machine 10 includes a rotor 21, a stator 31, and a sensor unit 41.
  • the rotor 21 is a field element.
  • the stator 31 is an armature.
  • the entire rotor 21 is cup-shaped.
  • the rotor 21 is positioned with its open end facing the body 13.
  • the rotor 21 is fixed to the end of the rotating shaft 14.
  • the rotor 21 and the rotating shaft 14 are connected via a positioning mechanism in the rotational direction such as key fitting.
  • the rotor 21 is fixed by being fastened to the rotary shaft 14 by a fixing bolt 25.
  • the rotor 21 rotates together with the rotating shaft 14.
  • the rotor 21 provides a field by a permanent magnet.
  • the rotor 21 has a cup-shaped rotor core 22.
  • the rotor core 22 is connected to the rotating shaft 14 of the internal combustion engine 12.
  • the rotor core 22 has an inner cylinder fixed to the rotating shaft 14, an outer cylinder positioned on the radially outer side of the inner cylinder, and an annular bottom plate extending between the inner cylinder and the outer cylinder.
  • the rotor core 22 provides a yoke for a permanent magnet described later.
  • the rotor core 22 is made of a magnetic metal.
  • the rotor 21 has a permanent magnet 23 disposed on the inner surface of the rotor core 22.
  • the permanent magnet 23 is fixed inside the outer cylinder.
  • the permanent magnet 23 is fixed with respect to the axial direction and the radial direction by a holding cup 24 arranged on the radially inner side.
  • the holding cup 24 is made of a thin nonmagnetic metal. The holding cup 24 is fixed to the rotor core 22.
  • the permanent magnet 23 has a plurality of segments. Each segment is partially cylindrical.
  • the permanent magnet 23 provides a plurality of N poles and a plurality of S poles inside thereof.
  • the permanent magnet 23 provides at least a field.
  • the permanent magnet 23 provides six pairs of N poles and S poles, that is, a 12 pole field by 12 segments. The number of magnetic poles may be other numbers.
  • the permanent magnet 23 provides a partial special magnetic pole for providing a reference position signal for ignition control.
  • the special magnetic pole is provided by a partial magnetic pole different from the magnetic pole arrangement for the field.
  • FIG. 2 is a partial plan view including the stator 31 and the sensor unit 41.
  • the cross-sectional position of FIG. 1 is indicated by the line II.
  • FIG. 3 shows the radially outer side of the stator 31.
  • the stator 31 and the sensor unit 41 can be understood in detail with reference to FIGS.
  • the stator 31 is an annular member.
  • the stator 31 is disposed between the rotor 21 and the body 13.
  • the stator 31 has a through hole that can receive the rotating shaft 14 and the inner cylinder of the rotor core 22.
  • the stator 31 has an outer peripheral surface that faces the inner surface of the rotor 21 via a gap.
  • a plurality of magnetic poles 32a are arranged on the outer peripheral surface.
  • the stator 31 has, for example, 18 magnetic poles 32a. Other numbers may be sufficient as the number of the magnetic poles 32a.
  • These magnetic poles 32 a are arranged to face the field of the rotor 21.
  • the stator 31 has an armature winding.
  • the stator 31 has multiphase armature windings.
  • the stator 31 is fixed to the body 13.
  • the stator 31 is a three-phase multipolar stator having a plurality of magnetic poles 32a and a plurality of three-phase windings.
  • the stator 31 has a stator core 32.
  • the stator core 32 is disposed inside the rotor 21 by being fixed to the body 13 of the internal combustion engine 12.
  • the stator core 32 forms a plurality of magnetic poles 32a facing the permanent magnet 23 on the radially outer side.
  • the stator core 32 is formed by laminating electromagnetic steel plates formed in a predetermined shape so as to form a plurality of magnetic poles 32a.
  • the stator core 32 provides a plurality of magnetic poles 32 a that face the inner surface of the permanent magnet 23.
  • a gap 32 b is provided between the plurality of magnetic poles 32 a of the stator core 32.
  • the gap 32b is also called a slot.
  • the stator 31 has a stator coil 33 wound around a stator core 32.
  • the stator coil 33 provides an armature winding.
  • An insulator made of an insulating material is disposed between the stator core 32 and the stator coil 33.
  • the stator coil 33 is a three-phase winding.
  • the stator coil 33 can selectively function the rotor 21 and the stator 31 as a generator or an electric motor.
  • the stator 31 and the body 13 are connected via a fixing bolt 34.
  • the stator 31 is fixed by being fastened to the body 13 by a plurality of fixing bolts 34.
  • the stator 31 is fixed to a boss portion 13 a extending from the body 13.
  • the boss part 13a is a cylindrical part.
  • the boss portion 13 a is a metal member that is integral with the body 13.
  • the stator core 32 defines a through hole 32c for receiving the inner shaft of the rotary shaft 14 and the rotor core 22. As shown in FIG. Further, the stator core 32 has a plurality of through holes 32 d for receiving a plurality of fixing bolts 34. These through holes 32d contribute to defining the position of the stator core 32 in the circumferential direction. The stator core 32 has a through hole for receiving a fixing bolt 44 for fixing the sensor unit 41.
  • Sensor unit 41 provides a rotational position detection device for an internal combustion engine.
  • the sensor unit 41 is provided in the rotating electrical machine 10 that is linked to the internal combustion engine 12.
  • the sensor unit 41 is provided on the stator core 32 of the rotating electrical machine 10.
  • the sensor unit 41 outputs an electrical signal indicating the rotational position of the rotor 21 by detecting the magnetic flux of the permanent magnet 23 provided on the rotor 21.
  • the sensor unit 41 is fixed to the stator 31.
  • the sensor unit 41 is disposed between the stator core 32 and the body 13.
  • the sensor unit 41 is fixed to one end surface of the stator core 32.
  • the sensor unit 41 detects the rotational position of the rotor 21 by detecting the magnetic flux supplied by the permanent magnet 23 provided on the rotor 21.
  • the sensor unit 41 has a plurality of rotational position sensors 43.
  • the plurality of rotational position sensors 43 are disposed between two adjacent magnetic poles 32a.
  • the plurality of rotational position sensors 43 are arranged at predetermined positions in the gap 32b. In this embodiment, the circumferential direction of the stator core 32 is arranged at the center of the gap 32b.
  • the plurality of rotational position sensors 43 detect the rotational position of the rotor 21 by detecting a change in magnetic flux of the permanent magnet 23.
  • the plurality of rotational position sensors 43 are disposed away from each other in the circumferential direction with respect to the rotational axis of the rotor 21. In this embodiment, they are arranged with an electrical angle of 120 deg from each other.
  • the reference position for ignition control is indicated by the position of the special magnetic pole provided by the permanent magnet 23.
  • the rotational position of the rotor 21 is also the rotational position of the rotating shaft 14. Therefore, a reference position signal for ignition control can be obtained by detecting the rotational position of the rotor 21.
  • At least one of the plurality of rotational position sensors 43 outputs a signal for ignition control by reacting to the special magnetic pole.
  • one rotational position sensor 43 provides a rotational position sensor for ignition control.
  • the stator 31 includes a rotational position sensor for outputting a signal for ignition control when the rotor 21 is at a predetermined rotational position.
  • the rotational position of the rotor 21 is indicated by the position of the field provided by the permanent magnet 23 in the rotational direction. Therefore, the rotating electrical machine 10 can function as an electric motor by detecting the rotational position of the rotor 21 and controlling the energization to the armature winding according to the detected rotational position. At least one of the plurality of rotational position sensors 43 detects the rotational position of the rotor 21 for causing the rotating electrical machine 10 to function as at least an electric motor.
  • the rotating electrical machine 10 can function as a generator and an electric motor, and can selectively function as either of them.
  • the sensor unit 41 accommodates the electric circuit component 42.
  • the electric circuit component 42 includes a substrate, an electric element mounted on the substrate, an electric wire, a part of the wiring 11a, and the like.
  • the sensor unit 41 accommodates the rotational position sensor 43.
  • the sensor unit 41 has a case 51.
  • the case 51 is made of a resin material.
  • the case 51 can partially have a metal part.
  • the case 51 accommodates and holds the electric circuit component 42 and the rotational position sensor 43.
  • the rotational position sensor 43 is connected to the electric circuit component 42.
  • the case 51 has a shape corresponding to a cross section of a polygonal cylinder, for example, a trapezoidal cylinder, and has an outer edge extending approximately corresponding to the radially outer edge of the stator 31.
  • the case 51 has a container 52 for housing the electric circuit component 42.
  • the container 52 is made of a resin material.
  • the container 52 has a box shape in which a surface facing the body 13 is opened.
  • the container 52 has a bottom surface facing the stator core 32 side, an opening facing the body 13, and a side wall surrounding the bottom surface and the opening.
  • the electric circuit component 42 is accommodated in the container 52 and fixed.
  • the case 51 contains at least one rotational position sensor 43 and has at least one cover 53 for supporting directly or indirectly.
  • the rotational position sensor 43 is fixed at a predetermined position in the cover 53.
  • the cover 53 is a bottomed cylindrical member formed so as to extend from the bottom surface of the container 52.
  • the cover 53 is provided outside the case 51 in the radial direction.
  • the cover 53 is inserted into the gap 32b between the two magnetic poles 32a.
  • the cover 53 has a base portion 53a provided on the bottom surface of the case 51, and a tip portion 53b extending from the base portion 53a.
  • the tip 53b is thinner than the base 53a.
  • the base 53a has a width wider than the gap 32b.
  • a stepped portion 53c is formed between the base portion 53a and the distal end portion 53b.
  • the step portion 53 c comes into contact with the end surface of the stator core 32.
  • the step part 53c may contact the end surface of the insulator. Thereby, the insertion amount of the front-end
  • the inside of the cover 53 communicates with the inside of the container 52.
  • the sensor unit 41 has a plurality of covers 53.
  • the cover 53 has a shape that can be called a finger shape or a tongue shape extending from the container 52.
  • the cover 53 can also be called a sheath for the rotational position sensor 43.
  • the plurality of covers 53 include one cover 53 for a rotational position sensor for detecting a reference position for ignition control and three covers 53 for rotational position sensors for motor control.
  • Each rotation position sensor 43 is accommodated in each cover 53.
  • the rotational position sensor 43 detects the magnetic flux supplied from the permanent magnet 23.
  • the rotational position sensor 43 is provided by a Hall sensor, an MRE sensor, or the like. This embodiment has one rotational position sensor for ignition control and three rotational position sensors for motor control.
  • the rotational position sensor 43 is electrically connected to the electric circuit component 42 by a sensor terminal disposed in a cavity in the cover 53.
  • the case 51 has a tightening portion 54.
  • the tightening portion 54 is provided radially inward from the container 52 with respect to the radial direction of the rotating electrical machine 10.
  • a connecting portion 55 is provided between the container 52 and the tightening portion 54 to connect them.
  • the fixing bolt 44 is disposed through the stator core 32 from the surface of the stator core 32 opposite to the body 13.
  • the front end portion of the fixing bolt 44 protruding from the stator core 32 is screwed into the female thread portion of the tightening portion 54.
  • the sensor unit 41 is fixed to the stator core 32.
  • the inside of the container 52 is filled with a protective sealing resin 56.
  • the sealing resin 56 is a potting resin for protecting the electric circuit component 42.
  • the sensor unit 41 has a wiring 11a for external connection for taking out a signal output from the rotational position sensor 43 to the outside.
  • the wiring 11 a is connected to another electric circuit component 42.
  • the rotating electrical machine 10 includes a plurality of power lines that connect the stator coil 33 and the electric circuit 11.
  • the electric power line supplies the electric circuit 11 with electric power induced in the stator coil 33 when the rotating electrical machine 10 functions as a generator.
  • the power line supplies power for exciting the stator coil 33 from the electric circuit 11 to the stator coil 33 when the rotating electrical machine 10 functions as an electric motor.
  • a direction DF indicates one of deformation directions of the case 51.
  • the direction HT indicates the height direction.
  • the direction HT corresponds to the axial direction.
  • the rib 74 shown in FIG. 6 is formed so as to be lower from the vicinity of the outer wall 63 to the vicinity of the center of the bottom wall 61, but gradually higher toward the inner wall 62 in the vicinity of the inner wall 62.
  • the direction LT indicates the length direction.
  • the direction LT corresponds to the radial direction.
  • the connecting portion 86 illustrated in FIG. 6 is one of connecting portions that are long in the length direction.
  • the connecting portion 88 shown in FIG. 7 is one of connecting portions that are short in the length direction.
  • a plurality of portions forming the case 51 are integrally formed of a continuous resin material.
  • the container 52, the cover 53, the fastening portion 54, and the connecting portion 55 are integrally formed of a continuous resin material.
  • a plurality of ribs and connecting portions described later are also integrally formed of a resin material continuous from the container 52.
  • the case 51 has a reinforcing rib 53d for the cover 53.
  • the reinforcing rib 53d is provided only on the cover 53 that extends the longest among the plurality of covers 53.
  • the reinforcing rib 53 d is provided on the radially inner side from the cover 53.
  • the reinforcing rib 53d has a plate shape with a thin thickness in the circumferential direction.
  • the reinforcing rib 53 d has a plate shape extending between the bottom wall 61 and the cover 53.
  • the reinforcing rib 53d extends from the cover 53 toward the inside in the radial direction.
  • the reinforcing rib 53 d extends from the outer surface of the bottom wall 61 radially inward of the cover 53 so as to gradually increase toward the tip of the cover 53 as it approaches the cover 53.
  • the rib 53d is stretched so as to spread between a radially elongated region on the radially inner side of the cover 53 and a radially elongated region on the outer surface of the bottom wall 61.
  • the reinforcing rib 53d is a triangle having the two elongated regions as two adjacent sides.
  • the reinforcing rib 53d is in contact with the cover 53.
  • the contact between the reinforcing rib 53d and the cover 53 extends over the entire length of the cover 53 along the length direction of the cover 53, that is, the axial direction.
  • the reinforcing rib 53d is in contact with the bottom wall 61.
  • the contact between the reinforcing rib 53d and the bottom wall 61 extends along a radial direction over a range longer than the radial width of the cover 53.
  • the reinforcing rib 53d is disposed in a gap between two adjacent magnetic poles 32a, that is, between two adjacent coils.
  • the reinforcing rib 53d suppresses deformation of the bottom wall 61.
  • the reinforcing rib 53d suppresses deformation of the cover 53.
  • the reinforcing rib 53d contributes to maintain the relative relationship between the cover 53 and the bottom wall 61.
  • the container 52 is partitioned by a plurality of walls 61-65.
  • the plurality of walls 61-65 are plate-shaped.
  • the container 52 provides a flat container having one end, that is, an end surface facing the body 13 opened.
  • the container 52 has a bottom wall 61 that extends in a fan shape.
  • the bottom wall 61 extends over a range including the installation position of the rotational position sensor 43.
  • the bottom wall 61 is a radially outer side surface of the stator 31 and extends in a range that can be called a circular arc shape or a fan shape in the circumferential direction.
  • the container 52 has side walls 62-65 that surround the bottom wall 61.
  • the side walls 62-65 include an inner wall 62, an outer wall 63, a first side wall 64, and a second side wall 65.
  • the side walls 62-65 extend from the bottom wall 61 so as to have a predetermined height along the axial direction.
  • the inner wall 62 is located on the radially inner side.
  • the inner wall 62 extends in an arc shape along the circumferential direction.
  • the outer wall 63 is located on the radially outer side.
  • the outer wall 63 extends in a polygonal shape along the radially outer edge of the stator core 32.
  • the first side wall 64 extends so as to connect the inner wall 62 and the outer wall 63.
  • the radially inner portion of the first side wall 64 extends along the radial direction.
  • the second side wall 65 extends so as to connect the inner wall 62 and the outer wall 63.
  • the radially inner portion of the second side wall 65 extends along the radial direction.
  • the second side wall 65
  • the container 52 has support protrusions 71 and 72 provided on the inner surface of the bottom wall 61.
  • the support protrusions 71 and 72 are provided by columns formed so as to extend from the bottom wall 61.
  • the support protrusions 71 and 72 are in contact with the electric circuit component 42 and support the electric circuit component 42 in the container 52.
  • the support protrusions 71 and 72 allow the sealing resin 56 to flow so that the electric circuit component 42 is wrapped.
  • the support protrusions 71 and 72 are distributed on the bottom wall 61.
  • the support protrusions 71 and 72 are cylindrical.
  • Support protrusions 71, 72 are lower than walls 62-65.
  • a connecting portion for connecting to the electric circuit component 42 can be provided at the tips of the support protrusions 71 and 72.
  • an elastic deformation part for snap-fit or a hole for receiving a machine screw can be provided.
  • the container 52 has a plurality of ribs 73-76 provided on the inner surface of the bottom wall 61.
  • the ribs 73-76 protrude from the bottom wall 61 in the axial direction, and are formed so as to be elongated on the inner surface of the bottom wall 61.
  • the plurality of ribs 73-76 are lower than the plurality of side walls 62-65.
  • the plurality of ribs 73-76 are lower than the support protrusions 71, 72 in the vicinity of the support protrusions 71, 72 and at positions away from the plurality of side walls 62-65.
  • the plurality of ribs 73-76 are in contact with the plurality of side walls 62-65.
  • the plurality of ribs 73-76 extend so as to follow the expansion of the walls in the vicinity of the plurality of side walls 62-65.
  • the plurality of ribs 73-76 suppress the deformation of the container 52.
  • the container 52 has a circumferential rib 73.
  • the circumferential rib 73 extends along the circumferential direction between the first side wall 64 and the second side wall 65.
  • the circumferential rib 73 extends along the outer wall 63.
  • the circumferential rib 73 is in contact with the first side wall 64 and the second side wall 65.
  • the circumferential rib 73 extends so as to pass through the support protrusions 71 and 72.
  • the circumferential rib 73 is formed to extend between the first side wall 64 and the support protrusion 71, between the support protrusion 71 and the support protrusion 72, and between the support protrusion 72 and the second side wall 65. ing.
  • the circumferential rib 73 is lower than the support protrusion 71.
  • the circumferential rib 73 suppresses deformation of the bottom wall 61 in the circumferential direction.
  • the container 52 has a plurality of radial ribs 74, 75, 76.
  • the plurality of radial ribs 74, 75, 76 extend between the inner wall 62 and the outer wall 63.
  • the plurality of radial ribs 74, 75, and 76 extend along the radial direction on the bottom wall. Note that the plurality of radial ribs 74, 75, and 76 do not need to extend accurately in the radial direction.
  • the plurality of radial ribs 74, 75, 76 may extend slightly inclined with respect to the radial direction.
  • the plurality of radial ribs 74, 75, 76 are spread in the axial direction and the circumferential direction so as to follow the spread of the inner wall 62 at a portion contacting the inner wall 62.
  • the plurality of radial ribs 74, 75, 76 are larger at the portion in contact with the inner wall 62 than at the portion in which the other rib is in contact with the wall.
  • the plurality of radial ribs 74, 75, 76 extend in the height direction at a portion in contact with the inner wall 62.
  • the plurality of radial ribs 74, 75, 76 are formed so as to be along the inner wall 62 closer to the inner wall 62 in the vicinity of the inner wall 62.
  • the radial ribs 74, 75, and 76 are gradually formed higher toward the inner wall 62 in the vicinity of the inner wall 62.
  • the plurality of radial ribs 74, 75, 76 extend in the width direction, that is, in the circumferential direction, at a portion in contact with the inner wall 62.
  • the plurality of radial ribs 74, 75, 76 enhance the rigidity of the bottom wall 61 and the inner wall 62. Further, the plurality of radial ribs 74, 75, and 76 contribute to maintaining the bottom wall 61 and the inner wall 62 in a predetermined positional relationship.
  • the container 52 has a first radial rib 74.
  • the first radial rib 74 extends along a diameter passing through the center in the circumferential direction of the container 52.
  • the container 52 has a second radial rib 75.
  • the second radial rib 75 extends along a diameter passing through a bolt hole 81 described later.
  • the second radial rib 75 extends so as to pass through the support protrusion 71.
  • the container 52 has a third radial rib 76.
  • the third radial rib 76 extends along a diameter passing through a bolt hole 82 described later.
  • the third radial rib 76 extends so as to pass through the support protrusion 72.
  • the second radial rib 75 and the third radial rib 76 are lower than the support protrusions 71 and 72 in the vicinity of the support protrusions 71 and 72.
  • the radial ribs 74, 75, 76 suppress deformation of the bottom wall 61 in the radial direction.
  • the tightening portion 54 is disposed radially inward from the container 52.
  • the tightening portion 54 has two bolt holes 81 and 82 for receiving the two fixing bolts 44.
  • the two bolt holes 81 and 82 are arranged in the circumferential direction.
  • the two bolt holes 81 and 82 are located on the same circumference on the stator 31.
  • the two bolt holes 81, 82 are arranged apart from each other in the circumferential direction on the fan-shaped tightening portion 54.
  • the tightening portion 54 is fastened and fixed to the stator core 32 by two fixing bolts 44.
  • the two bolt holes 81 and 82 are arranged so that the sensor unit 41 is positioned between the two through holes 32 d provided in the stator core 32.
  • the two bolt holes 81 and 82 are arranged so as to avoid interference between the fixing bolt 44 on the stator 31 and other parts.
  • These bolt holes 81 and 82 are provided by embedded nuts 81 a and 82 a fixed to the resin material forming the case 51.
  • the buried nuts 81a and 82a are fixed by a technique such as insert molding, press fitting, and screwing.
  • the connecting portion 55 is provided between the inner wall 62 located on the radially inner side of the plurality of side walls and the tightening portion 54, and connects the inner wall 62 and the tightening portion 54.
  • the connecting portion 55 has a plurality of portions 83-88.
  • the plurality of portions 83-88 are plate-like portions.
  • the plate-like portion contributes to suppress deformation due to the shrinkage of the resin material. Further, the plate-like portion enables a small amount of resin material. Further, the plate-like portion contributes to increase the rigidity related to a specific direction required for the sensor unit 41.
  • the connecting portion 55 has a bottom connecting portion 83.
  • the bottom connecting portion 83 is a plate-like portion that extends radially inward from the bottom wall 61.
  • the bottom connecting portion 83 extends so as to cross the axial direction and along the radial direction.
  • the bottom connecting portion 83 extends so as not to form an axial communication opening between the container 52 and the tightening portion 54.
  • the inner wall 62, the bottom connecting portion 83, and the fastening portion 54 have a surface 62 a that extends at an angle so as to connect the container 52 and the fastening portion 54.
  • the surface 62 a is formed to extend from the inner wall 62 toward the fastening portion 54.
  • the surface 62a is a concave curved surface. The surface 62a smoothly connects the radially inner surface of the inner wall 62 and the upper surface of the tightening portion 54 in the axial direction.
  • the connecting portion 55 includes a plurality of plate-like connecting portions 84-88.
  • the plate-like connecting portions 84-88 are thin plate-like in the circumferential direction.
  • the plurality of plate-like connecting portions 84-88 are arranged away from each other in the circumferential direction.
  • the plurality of plate-like connecting portions 84-88 are stretched so as to spread between an elongated range extending in the axial direction outside the inner wall 62 and an elongated range extending radially on the fastening portion 54. .
  • the plurality of plate-like connecting portions 84-88 have groove portions formed between them.
  • a groove is defined between the first end connecting portion 84 and the second intermediate connecting portion 87 and between the second end connecting portion 85 and the third intermediate connecting portion 88.
  • a groove is also defined between the first intermediate connecting portion 86 and the second intermediate connecting portion 87 and between the first intermediate connecting portion 86 and the third intermediate connecting portion 88.
  • the bottom surface of the groove portion is provided by an inclined surface 62 a extending between the inner wall 62 and the tightening portion 54.
  • the plurality of plate-like connecting portions 84-88 enhance the rigidity of the inner wall 62.
  • the plurality of plate-like connecting portions 84-88 enhance the rigidity of the tightening portion 54.
  • the plurality of plate-like connecting portions 84-88 contribute to maintaining the tightening portion 54 and the inner wall 62 in a predetermined positional relationship.
  • the connecting portion 55 has a first end connecting portion 84 and a second end connecting portion 85.
  • the first end connecting portion 84 connects one end portion in the circumferential direction of the inner wall 62 and the tightening portion 54.
  • the second end connecting portion 85 connects the other end portion of the inner wall 62 in the circumferential direction and the fastening portion 54.
  • the first end connecting portion 84 and the second end connecting portion 85 are located at both ends in the circumferential direction of the connecting portion 55.
  • the first end connecting portion 84 and the second end connecting portion 85 are high connecting portions having the same height as the upper end of the inner wall 62.
  • the first end connecting portion 84 and the second end connecting portion 85 are long connecting portions that extend inward from the bolt holes 81 and 82 and reach the radially inner end of the tightening portion 54.
  • the first end connecting portion 84 is located on the extension of the first side wall 64.
  • the first end connecting portion 84 extends radially inward from a corner formed by the inner wall 62 and the first side wall 64.
  • the second end connecting portion 85 is located on the extension of the second side wall 65.
  • the second end connecting portion 85 extends radially inward from a corner formed by the inner wall 62 and the second side wall 65.
  • the first end connecting portion 84 is in contact with the inner wall 62 and the first side wall 64 in an elongated range over the entire height direction of the container 52.
  • the second end connecting portion 85 is in contact with the inner wall 62 and the second side wall 65 in an elongated range throughout the height direction of the container 52.
  • the first end connecting portion 84 and the second end connecting portion 85 are in contact with the tightening portion 54 in an elongated range over the entire length of the tightening portion 54 in the radial direction.
  • the first end connecting portion 84 and the second end connecting portion 85 are in contact with the bottom connecting portion 83 in an elongated range over the entire length of the bottom connecting portion 83 in the radial direction.
  • the first end connecting portion 84 and the second end connecting portion 85 are spread at least in a triangular range in which two adjacent sides are in contact with the inner wall 62 and the tightening portion 54.
  • the 1st end part connection part 84 and the 2nd end part connection part 85 have spread so that it may become a convex shape rather than the range of the said triangle.
  • the connecting portion 55 has a plurality of intermediate connecting portions 86-88.
  • the intermediate connecting portions 86-88 are positioned between the first end connecting portion 84 and the second end connecting portion 85.
  • the intermediate connecting portions 86-88 connect the inner wall 62 and the tightening portion 54.
  • the intermediate connecting portions 86-88 extend from the inner wall 62 near the opening end of the container 52 toward the fastening portion 54.
  • the first intermediate connecting portion 86 is also called a central intermediate connecting portion because it is located in the center.
  • the first intermediate connecting portion 86 is a high connecting portion having the same height as the upper end of the inner wall 62.
  • the first intermediate connecting portion 86 is a long connecting portion that extends radially inward from the bolt holes 81 and 82 and reaches the radially inner end of the tightening portion 54.
  • the first intermediate connecting portion 86 is located between the two bolt holes 81 and 82.
  • the first intermediate connecting portion 86 extends from the center in the circumferential direction of the inner wall 62 toward the inside in the radial direction.
  • the contact portion between the first intermediate connecting portion 86 and the inner wall 62 corresponds to the radially outer side of the contact portion between the first radial rib 74 and the inner wall 62.
  • the first intermediate connecting portion 86 is located on the extension of the first radial rib 74.
  • the first radial rib 74 extends on the bottom wall 61 from the position corresponding to the first intermediate connecting portion 86 toward the radially outer side.
  • the first intermediate connecting portion 86 is in contact with the inner wall 62 in an elongated range over the entire height direction of the container 52.
  • the first intermediate connecting portion 86 is in contact with the tightening portion 54 in an elongated range over the entire radial direction of the tightening portion 54.
  • the first intermediate connecting portion 86 is in contact with the bottom connecting portion 83 in an elongated range over the entire length of the bottom connecting portion 83 in the radial direction.
  • the first intermediate connecting portion 86 extends at least in a triangular range in which two adjacent sides are in contact with the inner wall 62 and the fastening portion 54.
  • the first intermediate connecting portion 86 extends so as to be slightly convex from the range of the triangle.
  • the second intermediate connecting portion 87 and the third intermediate connecting portion 88 are located between the high and long connecting portions 84, 85, 86, and are also called auxiliary connecting portions because they are smaller.
  • the second intermediate connecting portion 87 and the third intermediate connecting portion 88 can also be called ribs that mainly reinforce the inner wall 62 from the radially inner side.
  • the second intermediate connecting portion 87 and the third intermediate connecting portion 88 are high connecting portions having the same height as the upper end of the inner wall 62.
  • the second intermediate connecting portion 87 and the third intermediate connecting portion 88 are short connecting portions that do not reach the radially inner end of the tightening portion 54.
  • the second intermediate connection portion 87 and the third intermediate connection portion 88 are short connection portions that extend outward from the bolt holes 81 and 82.
  • the second intermediate connecting portion 87 and the third intermediate connecting portion 88 are terminated on the radially outer side from the bolt holes 81 and 82.
  • the second intermediate connecting portion 87 is located radially outside the bolt hole 81.
  • the second intermediate connecting portion 87 is located between the first end connecting portion 84 and the first intermediate connecting portion 86.
  • the second intermediate connecting portion 87 extends radially inward from the inner wall 62.
  • the contact portion between the second intermediate connecting portion 87 and the inner wall 62 corresponds to the radially outer side of the contact portion between the second radial rib 75 and the inner wall 62.
  • the second intermediate connecting portion 87 is located on the extension of the second radial rib 75. In other words, the second radial rib 75 extends on the bottom wall 61 from the position corresponding to the second intermediate connecting portion 87 toward the radially outer side.
  • the third intermediate connecting portion 88 is located on the radially outer side of the bolt hole 82.
  • the third intermediate connecting portion 88 is located between the second end connecting portion 85 and the first intermediate connecting portion 86.
  • the third intermediate connecting portion 88 extends radially inward from the inner wall 62.
  • the contact portion between the third intermediate connecting portion 88 and the inner wall 62 corresponds to the radially outer side of the contact portion between the third radial rib 76 and the inner wall 62.
  • the third intermediate connecting portion 88 is located on the extension of the third radial rib 76. In other words, the third radial rib 76 extends on the bottom wall 61 from the position corresponding to the third intermediate connecting portion 88 toward the radially outer side.
  • the second intermediate connecting portion 87 and the third intermediate connecting portion 88 are in contact with the inner wall 62 throughout the height direction of the container 52.
  • the second intermediate connecting portion 87 and the third intermediate connecting portion 88 are in contact with the tightening portion 54 only at the radially inner portion of the tightening portion 54.
  • the second intermediate connecting portion 87 and the third intermediate connecting portion 88 are in contact with the bottom connecting portion 83 over the entire length of the bottom connecting portion 83 in the radial direction.
  • the electric circuit component 42 occupies a radially outer range in the container 52.
  • a sufficiently large gap for laying wiring and the like is formed between the electric circuit component 42 and the inner wall 62.
  • the plurality of radial ribs 74-76 are formed so as to approach the inner wall 62 in the vicinity of the inner wall 62. Interference between the radial ribs 74-76 and the electric circuit component 42 is avoided.
  • the first intermediate connecting portion 86 and the first radial rib 74 are disposed on the same diameter. Thereby, the fall of the inner wall 62 is suppressed with respect to the deformation direction DF. Moreover, since the first intermediate connecting portion 86 is in contact with the entire tightening portion 54, the tightening portion 54 and the inner wall 62 are maintained in the illustrated positional relationship. As shown in FIG. 7, the third intermediate connecting portion 88 and the third radial rib 76 are disposed on the same diameter. Thereby, the fall of the inner wall 62 is suppressed with respect to the deformation direction DF. As shown in FIG.
  • the intermediate connecting portions 86-88 are formed so as to gradually spread toward the inner wall 62 at the contact portion with the inner wall 62. Further, the intermediate connecting portions 86-88 are formed so as to gradually spread toward the tightening portion 54 at the contact portion with the tightening portion 54. 9 and 10, the shape of the radial ribs 74-76 that gradually spread toward the inner wall 62 is well shown. 11 and 12 clearly show the difference in height between the four covers 53.
  • the plate-like connecting portion 84-88 is provided between the container 52 and the fastening portion 54. Since the intermediate connecting portions 86-88 connect the inner wall 62 and the tightening portion 54, the inner wall 62 and the tightening portion 54 are maintained in a predetermined positional relationship. As a result, the inner wall 62 and the tightening portion 54 are accurately positioned in a predetermined positional relationship. Therefore, an error in the positional relationship between the inner wall 62 and the tightening portion 54 and a positional shift of the rotational position sensor 43 due to a change in the positional relationship are suppressed. Further, the plate-like connecting portions 84-88 suppress the deformation of the case 51 that affects the position of the rotational position sensor 43.
  • the deformation of the sealing resin 56 due to the deformation of the case 51 is suppressed.
  • the displacement of the electric circuit component 42 due to deformation of other parts is suppressed, so that the rotational position sensor 43 can be accurately positioned at a specified position.
  • the first intermediate connecting portion 86 is provided at the central portion in the circumferential direction of the fan-shaped case 51.
  • the first intermediate connecting portion 86 suppresses deformation of the case 51 in the deformation direction DF.
  • the first radial rib 74 is provided at the center of the sector case 51 in the circumferential direction. Moreover, the axial height of the first radial rib 74 from the bottom wall 61 is set gradually higher toward the inner wall 62.
  • the first radial rib 74 suppresses deformation of the case 51 in the deformation direction DF. Furthermore, the first radial rib 74 and the first intermediate connecting portion 86 are positioned on both sides in the radial direction of the inner wall 62. Thereby, the deformation of the case 51 is suppressed in the deformation direction DF.
  • the manufacturing method of the rotating electrical machine 10 includes a step of resin molding the case 51.
  • the resin material is supplied into a mold that defines a cavity corresponding to the case 51.
  • the resin material is supplied into the mold from a gate provided at the gate position GT illustrated in FIG.
  • the resin material spreads from the gate position GT into the cavity and flows while gradually filling the cavity.
  • the tip of the resin material meets again at a predetermined position in the cavity.
  • the resin material forms a boundary called a weld and remains as a trace even after the resin material is cured.
  • the resin material is fused in the weld, but the strength may be low in the vicinity of the weld due to the low continuity of the filler contained in the resin material.
  • the symmetry axis of the case 51 is located between the two bolt holes 81 and 82, and the gate position GT is located in the vicinity of the symmetry axis. For this reason, a weld may occur between the two bolt holes 81 and 82. Since the rotational torque in the opposite direction acts by the bolts around the two bolt holes 81 and 82, the low strength in the weld may cause the fastening portion 54 to be broken.
  • the first intermediate connecting portion 86 is located between the two bolt holes 81 and 82. The first intermediate connecting portion 86 reinforces the space between the two bolt holes 81 and 82. That is, the first intermediate connecting portion 86 provides a member that counters the rotational torque around the two bolt holes 81 and 82.
  • the first intermediate connecting part 86 complicates the shape of the weld and improves the strength of the resin material in the weld.
  • middle connection part 86 contributes also to the intensity
  • the ribs 73-76 are provided on the bottom wall 61 of the container 52.
  • the ribs 73 to 76 suppress deformation of the case 51 that affects the position of the rotational position sensor 43. As a result, the rotational position sensor 43 is accurately positioned at a specified position.
  • the support protrusions 71 and 72 extend into the container 52 so as to support the electric circuit component 42.
  • the support protrusions 71 and 72 are provided at the intersections between the circumferential rib 73 and the radial ribs 74, 75, and 76. This arrangement suppresses deformation and distortion of the case 51 due to the support protrusions 71 and 72. As a result, the support protrusions 71 and 72 stably support the electric circuit component. Further, the positional accuracy of the rotational position sensor 43 is improved.
  • the circumferential rib 73 and the radial ribs 74, 75, 76 extend from the bottom wall 61 into the container 52.
  • circumferential rib 73 and the radial ribs 74, 75, 76 are lower than the support protrusions 71, 72 in the vicinity of the support protrusions 71, 72. Thereby, the inflow of the sealing resin 56 between the electric circuit component 42 and the bottom wall 61 is promoted.
  • the support protrusions 71 and 72 and the ribs 73 to 76 increase the adhesion area between the bottom wall 61 and the sealing resin 56. Thereby, adhesive strength improves. Further, the ribs 73 to 76 may guide the flow of the sealing resin 56 in the process of injecting the sealing resin 56. In this case, the sealing resin 56 can be supplied to the required position.
  • the ribs 73-76 suppress the deformation of the case 51 due to the expansion or contraction of the sealing resin 56. For example, the ribs 73-76 suppress the deformation of the case 51 in the process of hardening the sealing resin 56.
  • Each of the ribs 74 to 76 is disposed between the plurality of covers 53 in the circumferential direction of the case 51.
  • each part of the rotating electrical machine 10 may expand and contract.
  • the stator core 32 and the case 53 contract due to low temperatures.
  • the sealing resin 56 contracts.
  • the resin material forming the component may contract due to a decrease in humidity. In these cases, peeling may occur between the case 51 and the sealing resin 56.
  • the enhanced adhesive strength in this embodiment suppresses delamination. Moreover, since the deformation
  • the contraction of the member due to the low temperature described above may loosen the engagement between the stator core 32 and the case 53.
  • noise may increase because the position of the rotational position sensor 43 is shifted in the axial direction due to vibration of the internal combustion engine.
  • the cover 53 may be damaged.
  • the connecting portions 83-88 and ribs 73-76 of this embodiment position the container 52 and the tightening portion 54 in a predetermined positional relationship, and suppress warping and amplitude of the container 52. Therefore, the deformation
  • the fixing bolt 44 is received in each of the two bolt holes 81 and 82, and the tightening portion 54 is fastened and fixed to the stator 31. Accordingly, the case 51 is firmly fixed in the axial direction. In addition, the case 51 is accurately fixed at a predetermined position in the circumferential direction. Positional displacement and movement of the sensor unit 41 in the circumferential direction are suppressed. As a result, the rotational position sensor 43 can be accurately positioned at a specified position in the circumferential direction.
  • the reinforcing rib 53 d is provided only on the longest cover 53.
  • the cover 53 houses a rotational position sensor for an ignition signal.
  • the reinforcing rib 53 d is provided on the cover 53, deformation of the cover 53 that affects the position of the rotational position sensor 43 is suppressed. As a result, the rotational position sensor 43 can be accurately positioned at a specified position in the radial direction.
  • the reinforcing rib 53d has a radial height from the radially inner surface of the cover 53 toward the radially inner side.
  • the radial height gradually decreases from the bottom wall 61 toward the tip of the cover 53.
  • the oblique side of the reinforcing rib 53d facilitates the arrangement of the reinforcing rib 53d between two adjacent coils.
  • the manufacturing method of the rotating electrical machine 10 includes a step of resin molding the case 51.
  • the cover 53 and the reinforcing rib 53d are molded by pouring a resin material into a mold.
  • the gap of the mold for molding the reinforcing rib 53d provides an additional passage for supplying the resin material to the gap of the mold for molding the cover 53. Thereby, the inflow of the resin material into the narrow gap for molding the cover 53 is promoted. Differences in resin flow in the plurality of covers 53 having different lengths are suppressed. Thereby, the difference in the moldability of the plurality of covers 53 is suppressed. As a result, the shape accuracy and position accuracy of the plurality of covers 53 are improved.
  • the method for manufacturing the rotating electrical machine 10 includes a step of attaching the case 51 to the stator core 32.
  • the case 51 includes a step of first inserting the longest cover 53 into the stator core 32 and a step of inserting another short cover 53 into the stator core 32 thereafter.
  • the longest cover 53 allows rough positioning. Moreover, the said process enables the deformation
  • the longest cover 53 is temporarily engaged with the stator core 32 alone.
  • the reinforcing ribs 53d give appropriate strength to the longest cover 53 that is required to have higher strength than the other covers 53.
  • the plurality of covers 53 are assembled to the stator core 32 while absorbing deformation and distortion of the case 51. Since the reinforcing rib 53d is provided only in the longest cover 53, the deformation of the other cover 53 is allowed while giving an appropriate strength to the longest cover 53.
  • This embodiment is a modification based on the preceding embodiment.
  • the second intermediate connecting portion 87 and the third intermediate connecting portion 88 are provided.
  • the second intermediate connecting portion 87 and the third intermediate connecting portion 88 are not provided.
  • the case 51 has a connecting portion 255.
  • the connecting portion 255 does not include the second intermediate connecting portion 87 and the third intermediate connecting portion 88. Also in this embodiment, since the first intermediate connecting portion 86 is provided, the same effect as that of the preceding embodiment can be obtained.
  • the case 51 has a connecting portion 355.
  • the connecting portion 355 has a first intermediate connecting portion 91 and a second intermediate connecting portion 92.
  • middle connection part 92 are located between the two bolt holes 81 and 82 regarding the circumferential direction.
  • the first intermediate connecting portion 91 and the second intermediate connecting portion 92 are positioned at positions corresponding to both sides of the first radial rib 74 in the circumferential direction.
  • the first intermediate connecting portion 91 and the second intermediate connecting portion 92 do not reach the radially inner end of the tightening portion 54, but have an intermediate length that reaches the circumferential gap between the two bolt holes 81 and 82. It is a connecting part.
  • the first intermediate connecting portion 91 and the second intermediate connecting portion 92 provide a strong connection between the inner wall 62 and the tightening portion 54. Also in this embodiment, since the plurality of intermediate coupling portions 91 and 92 are provided, the same operation and effect as the preceding embodiment can be obtained.
  • the case 51 has a connecting portion 455.
  • the connecting part 455 has a block-like connecting part 93.
  • the block connecting portion 93 is formed so as to fill a space between the inner wall 62 and the tightening portion 54.
  • the block-shaped connecting portion 93 provides a triangular cross section in which the inner wall 62 and the tightening portion 54 are positioned on two adjacent sides.
  • the block-shaped connecting portion 93 provides a surface that is inclined from the upper end of the inner wall 62 toward the radially inner end of the tightening portion 54. This surface is a slightly convex curved surface.
  • the block-shaped connecting portion 93 is provided with circular holes 93 a and 93 b for forming bolt holes 81 and 82.
  • the block-like connecting portion 93 provides a plurality of portions that connect the inner wall 62 and the tightening portion 54.
  • the block-shaped connecting portion 93 provides a bottom connecting portion 83.
  • the block-shaped connecting portion 93 provides a first end connecting portion 93c and a second end connecting portion 93d at the end in the circumferential direction.
  • the block-like connecting portion 93 provides an intermediate connecting portion 93e located between the two circular holes 93a and 93b.
  • the intermediate coupling portion 93e provided by the block-shaped coupling portion 93 contributes to maintain the inner wall 62 and the tightening portion 54 in a predetermined positional relationship.
  • the case 51 has a connecting portion 555.
  • the connecting portion 555 has a block-like connecting portion 94.
  • the block-shaped connecting portion 94 provides a square cross section in which the inner wall 62 and the tightening portion 54 are positioned on two adjacent sides.
  • the block-shaped connecting portion 94 is provided with circular holes 94a, 94b for forming bolt holes 81, 82.
  • the block-shaped connecting portion 94 provides a plurality of portions that connect the inner wall 62 and the tightening portion 54.
  • the block-like connecting portion 94 provides a bottom connecting portion 83.
  • the block-shaped connecting portion 94 provides a first end connecting portion 94c and a second end connecting portion 94d at the end in the circumferential direction.
  • the block-like connecting portion 94 provides an intermediate connecting portion 94e positioned between the two circular holes 94a and 94b.
  • the intermediate coupling portion 94e provided by the block-shaped coupling portion 94 contributes to maintain the inner wall 62 and the tightening portion 54 in a predetermined positional relationship.
  • the case 51 has a connecting portion 655.
  • the connecting portion 655 has an intermediate connecting portion 95.
  • the intermediate connecting portion 95 is located between the two bolt holes 81 and 82.
  • the intermediate connecting portion 95 is positioned on the extension of the first radial rib 74.
  • the intermediate connecting portion 95 is a long connecting portion that reaches the radially inner end of the tightening portion 54.
  • the intermediate connecting portion 95 is a low connecting portion that does not reach the upper end of the inner wall 62.
  • the intermediate connecting portion 95 has a height corresponding to the first radial rib 74.
  • the intermediate connection part 95 reinforces the connection between the inner wall 62 and the tightening part 54.
  • the case 51 has a connecting portion 755.
  • the connecting portion 755 has a first end connecting portion 84 and a second end connecting portion 85.
  • the connecting portion 755 does not include an intermediate connecting portion.
  • two bolt holes 81 and 82 are provided in the tightening portion 54.
  • the fastening portion 54 is fastened and fixed to the stator 31. Accordingly, the displacement and movement of the sensor unit 41 in the circumferential direction are suppressed. As a result, the rotational position sensor 43 is accurately positioned at a specified position in the circumferential direction.
  • the reinforcing rib 53d is provided on the cover 53, deformation of the cover 53 that adversely affects the position of the rotational position sensor 43 is suppressed.
  • This embodiment is a modification based on the preceding embodiment.
  • the case 51 has two bolt holes 81 and 82. Instead, in this embodiment, a single bolt hole 81 is employed.
  • the tightening portion 54 has a single bolt hole 81.
  • the bolt hole 81 is provided at the center in the circumferential direction of the case 51 and the tightening portion 54.
  • Case 51 has a connecting portion 855.
  • the connecting portion 855 includes a first intermediate connecting portion 96, a second intermediate connecting portion 97, and a third intermediate connecting portion 98.
  • the first intermediate connecting portion 96 is provided between the first end connecting portion 84 and the bolt hole 81.
  • the second intermediate connecting portion 97 is provided between the second end connecting portion 85 and the bolt hole 81.
  • the first intermediate connecting part 96 and the second intermediate connecting part 97 are long and high connecting parts.
  • the first intermediate connecting portion 96 and the second intermediate connecting portion 97 are also referred to as auxiliary connecting portions that assist the end connecting portions 84 and 85.
  • the third intermediate connecting portion 98 is provided on the radially outer side of the bolt hole 81.
  • the third intermediate connecting portion 98 is located on the extension of the first radial rib 74.
  • the third intermediate connecting part 98 is a short connecting part. Also in this embodiment, a groove portion is formed between the plurality of connecting portions 84, 85, 96, 97, 98.
  • the plate-like connecting portions 84, 85, 96-98 are provided between the container 52 and the fastening portion 54, deformation of the case 51 that affects the position of the rotational position sensor is suppressed. . As a result, the rotational position sensor can be accurately positioned. According to this embodiment, since the ribs 73-76 are provided on the bottom wall 61 of the container 52, deformation of the case 51 that affects the position of the rotational position sensor is suppressed.
  • the case 51 has a reinforcing rib 53d.
  • the reinforcing rib 53d has a ridge line curved slightly concave.
  • the reinforcing rib 53d is a triangle having two straight sides and one side curved in a concave shape.
  • the shape of the reinforcing rib 53d can also be called a triangle.
  • the reinforcing rib 53d does not reach the tip of the cover 53.
  • the reinforcing rib 53d extends from the bottom wall 61 to a height exceeding half of the entire length of the cover 53. According to this embodiment, since the reinforcing rib 53d is provided on the cover 53, deformation of the cover 53 that affects the position of the rotational position sensor is suppressed. As a result, the rotational position sensor can be accurately positioned in the radial direction.
  • the rotating electrical machine 10 has both a generator function and a motor function.
  • the rotating electrical machine 10 may have only a generator function.
  • the case 51 is fixed to and supported by the stator 31.
  • the case 51 may include a leg portion or an arm portion for contacting the body 13.
  • the leg portion can be formed to be elastically deformed by contacting the body 13.
  • the content of Japanese Patent Application No. 2014-243431, which is a Japanese patent application disclosing such a leg, is cited as a technical disclosure in this specification by reference.
  • the case 51 may include an arm portion described in Patent Document 3 as an arm portion.
  • the bolt holes 81 and 82 are provided by the embedded nuts 81a and 82a.
  • the bolt holes 81 and 82 may be defined by the fastening portion 54.
  • a separate hexagon nut may be employed.
  • the fixing bolt 44 is inserted from the outer surface of the stator 31 and screwed into the bolt holes 81 and 82.
  • the fixing bolt 44 may be inserted from the tightening portion 54 and screwed into a nut provided on the outer surface of the stator 31.
  • the case 51 has the bottom connecting portion 83.
  • the container 52 and the tightening portion 54 may be connected without providing the bottom connecting portion 83.
  • a plate-like member that connects the upper end of the inner wall 62 and the radially inner end of the tightening portion 54 may be provided.
  • Such a plate-like member provides a surface as illustrated, for example, in FIG. In other words, a shape in which a plurality of grooves are formed inside the block-shaped connecting portions 93 and 94 is provided.
  • the ribs 73-76 are provided only inside the container 52.
  • ribs may be provided on the outside of the container 52.
  • ribs corresponding to the ribs 73-76 may be provided only on the outside.
  • a part of the plurality of ribs 73-76 may be provided outside.
  • the container 52 has one circumferential rib 73. Instead of this, a plurality of circumferential ribs may be employed. In the above embodiment, the container 52 has three radial ribs 74, 75, 76. Alternatively, only one or two radial ribs may be employed. In addition, additional radial ribs may be employed.
  • the case 51 has four covers 53.
  • the case 51 may include only one cover 53.
  • only one cover 53 that accommodates only the rotational position sensor 43 for ignition control may be provided.
  • Two rotational position sensors may be provided in one cover.
  • only the longest cover 53 of the plurality of covers 53 has the reinforcing rib 53d.
  • the plurality of covers 53 may be provided with reinforcing ribs 53d.
  • reinforcing ribs 53d can be provided on all the covers 53.
  • all the covers 53 may be formed to have the same length, and the position of the rotational position sensor 43 therein may be shifted as shown in the figure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

L'invention concerne un dispositif permettant de positionner précisément un capteur dans une position prescrite. Un dispositif de détection de position de rotation destiné à détecter les variations du flux magnétique d'un rotor d'une machine électrique tournante comporte un boîtier 51. Le boîtier 51 comporte un contenant 52 destiné à recevoir un composant de circuit électrique. Une paroi inférieure 61 du contenant 52 présente des nervures radiales 74, 75, 76 s'étendant radialement sur le dessus de la paroi inférieure 61. Le boîtier 51 comporte une nervure de renforcement en forme de plaque 53d s'étendant entre un couvercle 53 destiné à recevoir un capteur et la paroi inférieure 61. Une partie de liaison 55 comporte deux parties de liaison de partie d'extrémité 84, 85 et des parties de liaison intermédiaires 86, 87, 88 disposées entre ces dernières. Les parties de liaison intermédiaires 86, 87, 88 maintiennent une paroi interne 62 et une partie de serrage 54 dans une relation de position prescrite. La suppression de la déformation du boîtier 51 supprime le décalage de position du capteur.
PCT/JP2015/006212 2014-12-25 2015-12-14 Dispositif de détection de position de rotation pour moteur à combustion interne WO2016103619A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2016533747A JP6112259B2 (ja) 2014-12-25 2015-12-14 内燃機関用回転位置検出装置
CN201580070149.XA CN107112862B (zh) 2014-12-25 2015-12-14 内燃机用旋转位置检测装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014263126 2014-12-25
JP2014-263126 2014-12-25

Publications (1)

Publication Number Publication Date
WO2016103619A1 true WO2016103619A1 (fr) 2016-06-30

Family

ID=56149687

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/006212 WO2016103619A1 (fr) 2014-12-25 2015-12-14 Dispositif de détection de position de rotation pour moteur à combustion interne

Country Status (3)

Country Link
JP (1) JP6112259B2 (fr)
CN (1) CN107112862B (fr)
WO (1) WO2016103619A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3312409A1 (fr) * 2016-10-20 2018-04-25 Yamaha Hatsudoki Kabushiki Kaisha Moteur
FR3087966A1 (fr) * 2018-10-26 2020-05-01 Valeo Equipements Electriques Moteur Bloc de commande d'une machine electrique tournante et procede de montage d'un tel bloc de commande
WO2023162740A1 (fr) * 2022-02-23 2023-08-31 株式会社デンソートリム Machine électrique rotative

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7499370B1 (ja) 2023-03-13 2024-06-13 松田産業株式会社 貴金属蒸着材料

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0621380U (ja) * 1992-08-08 1994-03-18 株式会社三ツ葉電機製作所 回転センサの固定装置
JP2002252946A (ja) * 2000-12-22 2002-09-06 Mitsuba Corp モータ装置
JP2010200421A (ja) * 2009-02-23 2010-09-09 Mitsuba Corp アウタロータ型の回転電機
JP2011091966A (ja) * 2009-10-23 2011-05-06 Mitsuba Corp センサケース及びそれを用いる回転電機
WO2014080675A1 (fr) * 2012-11-21 2014-05-30 三菱電機株式会社 Moteur électrique, climatiseur, et méthode de fabrication de moteur électrique

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002044927A (ja) * 2000-07-21 2002-02-08 Honda Motor Co Ltd ブラシレスモータ
JP4004278B2 (ja) * 2001-11-26 2007-11-07 三洋電機株式会社 回転式圧縮機
JP4945393B2 (ja) * 2007-09-25 2012-06-06 日立アプライアンス株式会社 駆動用モータ
JP5064279B2 (ja) * 2008-03-27 2012-10-31 株式会社ミツバ 回転電機
JP2013027252A (ja) * 2011-07-25 2013-02-04 Denso Trim Kk 始動発電機
JP2013233030A (ja) * 2012-04-27 2013-11-14 Denso Trim Kk 始動発電機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0621380U (ja) * 1992-08-08 1994-03-18 株式会社三ツ葉電機製作所 回転センサの固定装置
JP2002252946A (ja) * 2000-12-22 2002-09-06 Mitsuba Corp モータ装置
JP2010200421A (ja) * 2009-02-23 2010-09-09 Mitsuba Corp アウタロータ型の回転電機
JP2011091966A (ja) * 2009-10-23 2011-05-06 Mitsuba Corp センサケース及びそれを用いる回転電機
WO2014080675A1 (fr) * 2012-11-21 2014-05-30 三菱電機株式会社 Moteur électrique, climatiseur, et méthode de fabrication de moteur électrique

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3312409A1 (fr) * 2016-10-20 2018-04-25 Yamaha Hatsudoki Kabushiki Kaisha Moteur
FR3087966A1 (fr) * 2018-10-26 2020-05-01 Valeo Equipements Electriques Moteur Bloc de commande d'une machine electrique tournante et procede de montage d'un tel bloc de commande
WO2023162740A1 (fr) * 2022-02-23 2023-08-31 株式会社デンソートリム Machine électrique rotative
JP7418146B1 (ja) 2022-02-23 2024-01-19 株式会社デンソートリム 回転電機

Also Published As

Publication number Publication date
CN107112862A (zh) 2017-08-29
JP6112259B2 (ja) 2017-04-12
CN107112862B (zh) 2019-08-02
JPWO2016103619A1 (ja) 2017-04-27

Similar Documents

Publication Publication Date Title
JP3688898B2 (ja) 電動機のロータ
JP6112259B2 (ja) 内燃機関用回転位置検出装置
WO2016181659A1 (fr) Dispositif de détection de position de rotation pour moteur à combustion interne et machine électrique tournante pour moteur à combustion interne
TWI495227B (zh) Motor stator and permanent magnet type rotary motor
JP6093673B2 (ja) レゾルバ
JP5396842B2 (ja) 回転電機と回転電機の製造方法
JP6969894B2 (ja) ステータおよびレゾルバ
JP5971314B2 (ja) 内燃機関用回転電機
JP5803567B2 (ja) ステータ固定構造
JP6549801B2 (ja) 内燃機関用回転電機
US20160161290A1 (en) Fixation structure and resolver stator
JP6032340B2 (ja) 内燃機関用回転電機
JP6286617B2 (ja) 内燃機関用回転電機
JP5734645B2 (ja) モータ用ブラケット、および電動モータ
JP5827034B2 (ja) 始動発電機
US11218042B2 (en) Rotor for motor
WO2014024973A1 (fr) Armature et machine électrique tournante utilisant celle-ci
JP6058725B2 (ja) 始動発電機
JP5523058B2 (ja) ステータ用インシュレータ及びそれを用いる回転電機
JP6838306B2 (ja) 車載用検出装置
JP5971315B2 (ja) 内燃機関用回転電機
JP5967133B2 (ja) 内燃機関用回転電機およびそのセンサユニットの製造方法
JP2017070072A (ja) アウターロータ型回転電機
JP2022052070A (ja) 回転電機
WO2016084352A1 (fr) Machine électrique tournante pour moteur à combustion interne

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2016533747

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15872194

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15872194

Country of ref document: EP

Kind code of ref document: A1