CN108631473A - Motor - Google Patents

Abstract

The present invention provides a kind of motor, prevents burning out for the Wiring pattern of the winding of connection coil and the wiring substrate of lead.Motor (1) is the motor of 8 pole, 12 slot, and the anchor leg (27) on wiring substrate (8) is powered via wiring substrate (8) to coil (26).The printed base plate that wiring substrate (8) is four layers is formed with the Wiring pattern of the coil (26) of triangle connection three-phase.Wiring substrate (8) has circular Wiring pattern forming portion (81) and from the outer peripheral edge of Wiring pattern forming portion (81) to radial outside arm outstanding (82).Coil (26) is connect via terminal pins (28) with the through-hole (83) for the outer peripheral edge for being formed in Wiring pattern forming portion (81).Lead (27) solder is bound in arm (82) on the pad (84) for the superficial layer (8A) for being formed in wiring substrate (8), and by fixed component (58).

Description

Motor

Technical field

The present invention relates to the motor via wiring substrate to coil power supply.

Background technology

In the motor for containing stator and rotor in motor case body, in the wiring base being configured in motor case body The winding of coil and the lead of power supply are connected on plate, and the power supply to coil is carried out via the Wiring pattern on wiring substrate.Specially The motor of sharp document 1 uses four layers of printed base plate as wiring substrate, has the wiring for the superficial layer being formed in four layers Pattern and it is formed in other three layers of U phases, the Wiring pattern of V phases, W phases.The connection of the Wiring pattern of each phase and corresponding coil It is carried out via the terminal pins for the through-hole for being installed on four layers of perforation.Terminal pins are pressed into insulating part, and the winding drawn from coil twines It is wound in terminal pins.The Wiring pattern of each phase is connect via terminal pins with the Wiring pattern for being set to superficial layer, U phases, V phases, W phases Coil carry out star-star connection.

Existing technical literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2001-314056 bulletins

Invention content

The technical problems to be solved by the invention

Figure 10 is provided with the definition graph of the wiring substrate of the Wiring pattern of star-star connection, and Figure 10 (a)~(c) is indicated respectively U phase Wiring pattern 185U, V phase Wiring pattern 185V, W phase Wiring patterns 185W.In addition, Figure 10 (d) expressions are set to wiring base The Wiring pattern 185A of the superficial layer of plate.As shown in Figure 10 (a)~Figure 10 (d), to carry out the side of star-star connection to three-phase coil When formula forms Wiring pattern, it is unable to overstriking pattern width.In addition, though the pad of connecting lead wire is equipped on wiring substrate, but The wiring substrate of conventional example shown in Fig. 10 is formed in the part for being projected into peripheral side from the annulus for forming Wiring pattern There is pad.Therefore, the pattern width of the part extended from annulus to the fixed position of lead can attenuate.

In the case where the pattern width of Wiring pattern is thin, when circulate high current when, Wiring pattern is possible to burn out.Example Such as, when the drive motor at low voltage such as driving by accumulator, if circulation high current, Wiring pattern are possible to burn out. Even as the wiring method for the possibility that high current is not also burnt out, there is the method that wiring is carried out by busbar, but can be at For the principal element of cost increase.

In view of the above problems, technical problem of the invention is, prevents the winding of connection coil and the wiring base of lead The Wiring pattern of plate is burnt out.

Technical scheme applied to solve the technical problem

In order to solve the above technical problem, the present invention provides a kind of motor, which is characterized in that has：Rotor has Magnet；Stator core is configured at the peripheral side of the rotor；The coil of three-phase is wound in the stator core；Wiring base Plate connects the winding and lead of the coil；And motor field frame, accommodate the stator core, the stator core Slot number N and the number of poles M of the magnet meet condition below：N=3 × n and M=2 × n or 4 × n (n be 1 or more it is whole Number), the wiring substrate has four layers of wiring layer across insulation layer stackup, and three layers in the wiring layer are respectively formed with The Wiring pattern of the coil with phase is connected, in addition the superficial layer on one layer of surface for being disposed on the wiring substrate, in the table The wiring diagram that face layer is formed with the pad for being electrically connected the lead and connects the pad with three layers of the Wiring pattern Case, by be formed in three layers of the Wiring pattern and be formed in the Wiring pattern of the superficial layer to the coil of the three-phase into Row delta connection.

In accordance with the invention it is possible to carry out delta connection to three-phase coil via the Wiring pattern for being formed in wiring substrate. In the case where slot number N is 3 × n and the number of poles M of magnet is 2 × n or 4 × n, the shape in a manner of carrying out delta connection to coil It, being capable of overstriking pattern width compared with the case where forming Wiring pattern in a manner of star-star connection when at Wiring pattern.Therefore, In the case where circulating high current, the possibility that Wiring pattern is burnt out is few.Therefore, even if using motor at low voltage Wiring pattern can not be made to burn out.

In the present invention, it is generally desirable to, the wiring substrate has circular Wiring pattern forming portion, in the wiring The Wiring pattern and the pad is arranged in pattern forming portion.In this way, being formed lead is pulled in circular Wiring pattern In portion and when being electrically connected with pad, the pattern width constriction of the part of pad and Wiring pattern need not will be connected.Therefore, it is flowing In the case of logical high current, the possibility that Wiring pattern is burnt out is few.

In the present invention, it is generally desirable to, the wiring substrate has from the Wiring pattern forming portion to be protruded to outer peripheral side Arm, the lead is fixed on the arm.So, when lead is pulled, power is not easy to be transmitted to pad and lead Fixed part.Therefore, the fixed possibility disengaged of lead is few.

In the present invention, it is generally desirable to, the arm have the necking part being connect with the Wiring pattern forming portion and The circumferential width wide width part wider than the necking part.So, the case where lead is fixed on arm by fixed component Under, the possibility that fixed component falls off from arm is few.

In the present invention, it is generally desirable to, the part in the outside for being drawn out to the motor field frame of the lead is consolidated Due to the lateral surface of the motor field frame.So, when lead is pulled, power is not easy to be transmitted to consolidating for pad and lead Determine portion.Therefore, the fixed possibility disengaged of lead is few.

In the present invention, it is generally desirable to, have adhesive layer, the adhesive layer covers the pad and is fixed on described The part of the lead of pad.So, the fixation of lead can be strengthened by bonding agent.Therefore, the fixation of lead is de- The possibility opened is few.In addition, in this case, it is desirable that the adhesive layer is made of the bonding agent of insulating properties.As a result, can It is enough that pad and lead insulate with other components.Therefore, it is possible to prevent short circuit between lead, lead and other components it Between short circuit.

In the present invention, it is generally desirable to, the windings of all coils of the stator core is wound in described The coiling direction of slot is identical.In this way, the manufacture of stator becomes easy.

(invention effect)

According to the present invention, since slot number N is 3 × n and sets the number of poles M of magnet as 2 × n or 4 × n, using to three-phase coil Carry out delta connection Wiring pattern to coil power supply, therefore with use to three-phase coil carry out star-star connection Wiring pattern It is compared to the case where coil power supply, it being capable of overstriking pattern width.Therefore, in the case where circulating high current, Wiring pattern is burnt out Possibility it is few.Therefore, it is possible to use motor at low voltage.

Description of the drawings

Fig. 1 is the sectional view of the motor of the present invention.

Fig. 2 is the exploded perspective view of motor part.

Fig. 3 is the vertical view of rotor and stator from reinfusion side.

Fig. 4 is the vertical view of the wiring substrate from reinfusion side.

Fig. 5 is the stereogram and vertical view of cover member.

Fig. 6 is the definition graph for carrying out the state after delta connection to three-phase coil by wiring substrate.

Fig. 7 is the definition graph of U phase wiring layers.

Fig. 8 is the definition graph of V phase wiring layers.

Fig. 9 is the definition graph of W phase wiring layers.

Figure 10 is provided with the definition graph of the wiring substrate of the Wiring pattern of star-star connection.

(symbol description)

1 ... motor, 2 ... motor parts, 3 ... electromagnetic brakes, 4 ... encoders, 5 ... motor field frames, 6 ... encoders Cover, 7 ... sealing materials, 8 ... wiring substrates, 8A ... superficial layers, 8U ... U phase wiring layers, 8V ... V phase wiring layers, 8W ... W phase wirings Layer, 9 ... cover members, 10 ... rotary shafts, 11 ... output side bearings, 12 ... reinfusion side bearings, 13 ... motor side rotary shafts, 14 ... coder side rotary shafts, 21 ... magnet, 22 ... rotors, 23 ... stators, 24 ... stator cores, 25 ... insulating parts, 26 ... lines Circle, 26U ... U phase coils, 26V ... V phase coils, 26W ... W phase coils, 27 ... leads, 28,28U, 28V, 28W ... terminal pins, 29 ... adhesive layers, 31 ... friction plates, 32 ... armatures, 33 ... plates, 34 ... solenoids, 35 ... leads, 41 ... magnet retainers, 42 ... encoder magnet, 43 ... Magnetosensing elements, 44 ... sensor base plates, 45 ... substrate holders, 46 ... sensor wraps, 47 ... pass Sensor line, 51 ... iron core retainers, 52 ... bearing retainers, 53 ... brake casings, 54 ... bottoms, 55 ... cylindrical portions, 56 ... Lead taking-up portion, 57 ... pressing components, 58 ... fixed components, 61 ... bottoms, 62 ... side of sidewall portion, 63 ... pickup wire taking-up portions, 81 ... Wiring pattern forming portions, 82 ... arms, 83 ... through-holes, 84 ... pads, 85A ... wiring Wiring patterns, 85U ... U match Line pattern, 85V ... V phase Wiring patterns, 85W ... W phase Wiring patterns, 86 ... annular sections, 87 ... outburst areas, 88 ... Wiring areas Domain, 91 ... plate-like portions, 92 ... peripheral parts, 93 ... inner peripheral portion, 94 ... protrusions, 95 ... notch, 100 ... output shafts, 185A ... wirings Pattern, 185U ... U phase Wiring patterns, 185V ... V phase Wiring patterns, 185W ... W phase Wiring patterns, 241 ... salient pole, 251 ... is anti- Export side flange portion, 252 ... output side flange portions, 521 ... cyclic ribs, 551 ... small diameter portions, 561 ... notch, 562 ... leads guarantor Hold frame, 821 ... necking parts, 822 ... wide width parts, L ... axis directions, L1 ... outlet sides, L2 ... reinfusion side

Specific implementation mode

(overall structure)

Hereinafter, with reference to attached drawing, illustrate the embodiment for applying the motor of the present invention.Fig. 1 is the motor 1 of the present invention Sectional view.In the present specification, by the side and the other side of the axis direction L of motor 1, the output shaft 100 of motor 1 Side outstanding is as outlet side L1, using the side opposite with 100 side outstanding of output shaft as reinfusion side L2.Motor 1 output shaft 100 is set in the end of the outlet side L1 of the center of motor 1 rotary shaft 10 that L extends in the axial direction.

Motor 1 configures motor part 2, electromagnetic system in order from the outlet side L1 of rotary shaft 10 towards reinfusion side L2 Dynamic device 3 and encoder 4.Motor part 2 and electromagnetic brake 3 are accommodated in motor field frame 5.Encoder 4 is housed in installation In the inside of the encoder cover 6 of the end face of the reinfusion side L2 of motor field frame 5.Encoder cover 6 has and motor field frame 5 The side of sidewall portion 62 that the opposed bottom 61 in the end face of reinfusion side L2 and the outer peripheral edge from bottom 61 are erected towards motor field frame 5. Gap between the front end and motor field frame 5 of side of sidewall portion 62 is sealed by sealing material 7.

Motor field frame 5 is made of metals such as aluminium.Motor field frame 5 has the square tube for the peripheral side for surrounding motor part 2 The iron core retainer 51 of shape, be installed on iron core retainer 51 outlet side end wall thickness bearing retainer 52, surround electricity The peripheral side of magnetic brake 3 and the brake casing 53 of reinfusion side L2.Rotary shaft 10 is by being formed on bearing retainer 52 Center recess portion keep output side bearing 11 and be formed on brake casing 53 bottom center recess portion holding it is anti- Output side bearing 12 rotatably supports.Exporting side bearing 11 and reinfusion side bearing 12 is maintained between inner ring and outer ring The ball bearing of rotatable ball.

Brake casing 53 has the bottom 54 for the wall thickness for keeping reinfusion side bearing 12 and the outer peripheral edge court from bottom 54 The cylindrical portion 55 erected to iron core retainer 51.The inner circumferential side of embedded iron core retainer 51 is formed in the front end of cylindrical portion 55 Small diameter portion 551.In addition, being formed with embedded iron core retainer 51 in the outer peripheral edge in the face of the reinfusion side L2 of bearing retainer 52 The cyclic rib 521 of inner circumferential side.Bearing retainer 52 and brake casing 53 are assembled at the both ends of iron core retainer 51 and assemble electricity When motivation shell 5, the gap of the inner peripheral surface of the peripheral surface and iron core retainer 51 of small diameter portion 551 and cyclic rib 521 is not by scheming The o-ring shown is sealed.

Rotary shaft 10 has：With from bearing retainer 52 to the motor sidespin of outlet side L1 output shafts 100 outstanding Shaft 13；And it is fixed on the coder side rotary shaft 14 of the end of the reinfusion side L2 of motor side rotary shaft 13.Encoder Sidespin shaft 14 is prominent from the bottom of brake casing 53 54 to the inside of encoder cover 6.Motor side rotary shaft 13 is by magnetism Material is constituted, and coder side rotary shaft 14 is made of non-magnetic material.In addition, motor side rotary shaft 13 and coder side rotation Axis 14 can also be integrally formed by same raw material.

Motor part 2 has the peripheral surface in motor side rotary shaft 13 and is connected with the rotor 22 of magnet 21 and surrounds rotor The stator 23 of the tubular of 22 peripheral side.Stator 23 has the stator core 24 being made of laminated iron core and via insulating part volume 25 The coil 26 being wound in each in the multiple salient pole 241 for being set to stator core 24.Stator core 24 passes through hot jacket or pressure Enter and be fixed on the inside of iron core retainer 51.In the wiring base of the winding of the reinfusion side L2 configuration connection coils 26 of stator 23 Plate 8 and the cover member 9 for covering wiring substrate 8.Lead of the connection from the side for being formed in motor field frame 5 on wiring substrate 8 Taking-up portion 56 is pulled around to the lead 27 of the power supply of the inside of motor field frame 5.

Encoder 4 is magnetic coder, has the front end that coder side rotary shaft 14 is fixed on via magnet retainer 41 Encoder magnet 42 and in the Magnetosensing elements such as magnetoresistive element opposed with encoder magnet 42 reinfusion side L2 43.Encoder magnet 42 magnetizing surface opposed with Magnetosensing element 43, which magnetizes, the poles N and the poles S.Install the sensor base plate of Magnetosensing element 43 44 are fixed on the bottom 54 of brake casing 53 via substrate holder 45.The sensor wrap 46 of cup-shaped is fixed on encoder cover 6 Inside.The peripheral side of sensor base plate 44 and reinfusion side L2 are covered by sensor wrap 46.

For encoder 4, the rotation of the adjoint coder side rotary shaft 14 rotated integrally with motor side rotary shaft 13, Encoder magnet 42 rotates, and Magnetosensing element 43 detects the variation in the magnetic field that the rotation of encoder magnet 42 is brought.Magnetosensing element 43 Testing result be output to outside via the pickup wire 47 being connect with sensor base plate 44.Pickup wire 47 from be formed in coding The pickup wire taking-up portion 63 of device cover 6 is drawn out to outside.

Electromagnetic brake 3 has the circular friction plate 31 rotated integrally with motor side rotary shaft 13, in reinfusion Opposed with friction plate 31 side L2 circular armature 32, annular shape opposed with friction plate 31 outlet side L1 plate 33, match It is placed in the cylindric solenoid 34 of the reinfusion side L2 of armature 32.Solenoid 34 is secured by bolts in brake casing 53. Lead 35 to 34 power supply of solenoid and the lead 27 being connect with motor part 2 are drawn out to from lead taking-up portion 56 electronic together The outside of casing body 5.

Electromagnetic brake 3 has the torque spring (not shown) to exert a force towards friction plate 31 to armature 32.Electromagnetic brake 3 Be not powered in solenoid 34 it is non-energized when (when non-excitation), friction plate 31 is held in armature 32 and plate by torque spring Between 33, therefore rotary load is applied to motor side rotary shaft 13 by frictional force, generates brake force.In addition, due to right When solenoid 34 is electrified the energization of stream (when excitation), armature 32 is resisted torque spring and is attracted by solenoid 34, therefore in electricity Gap is generated between pivot 32 and friction plate 31.Therefore, because not applying the rotation that friction is brought in motor side rotary shaft 13 Load, so as the state of brake force is not acted on.

(wiring of motor part constructs and insulation structure)

Fig. 2 is the exploded perspective view of motor part 2.In addition, Fig. 3 is rotor 22 and stator 23 from the L2 of reinfusion side Vertical view.Stator 23 has 12 salient pole 241 (referring to Fig.1), and the slot number N of configuration coil 26 is 12.In addition, the magnet of rotor 22 21 be peripheral surface to be divided into 8 poles and circumferentially alternating magnetize 8 pole magnetised magnets of the poles N and the poles S.That is, the method is electronic Machine portion 2 is 8 pole, 12 slot.In addition, the slot number N of stator 23 and the magnetization number of poles M of magnet 21 may not be 8 pole, 12 slot.As long as that is, The condition for meeting magnetization the number of poles M=2n or 4n of the slot number N=3n of stator 23 and magnet can (integer that n is 1 or more).Example Such as, or 6 slot of 6 pole, 9 slot or 4 pole.

It is formed with flange part at the radial both ends of the insulating part 25 for each salient pole 241 for being installed on stator core 24.Such as Fig. 2 It is shown, be configured at the radial outside of coil 26 flange part have covering stator core 24 reinfusion side L2 end face reverse pumping Go out side flange portion 251 and covers the output side flange portion 252 of the end face of the outlet side L1 of stator core 24.In this mode, it rolls up The salient pole 241 of coiling 26 and the quantity of insulating part 25 are 12, and therefore, the reinfusion side flange portion 251 at 12 is matched in annular shape It sets.In addition, on each insulating part 25, terminal pins 28 are pressed at two of the inner peripheral surface along reinfusion side flange portion 251.Coil 26 winding ends are connect with from 25 terminal pins 28 outstanding of insulating part for being wound with the coil 26.For example, by the end of winding It is wound in terminal pins 28.

Motor part 2 is AC servomotor, and stator 23 has three-phase coil 26.As shown in figure 3, in 12 coils 26 4 be U phase coils 26U, 4 in remaining 8 are V phase coils 26V, and remaining 4 are W phase coils 26W.U phase coils 26U, V phase coil 26V and W phase coil 26W are arranged in order in the circumferential.Therefore, the terminal pins being connect with U phase coils 26U 28U, with V phase coils 26V the terminal pins 28V connecting and the terminal pins 28W being connect with W phase coils 26W in the circumferential in order Each arrangement two.In addition, putting in order for U phases, V phases, W phases is not limited to such sequence, or other to put in order.

As shown in Fig. 2, wiring substrate 8 has circular Wiring pattern forming portion 81 and from Wiring pattern forming portion 81 Outer peripheral edge is to radial outside arm 82 outstanding.Arm 82 has the necking part 821 being connected with Wiring pattern forming portion 81 and sets It is placed in the width wide width part 822 wider than necking part 821 of the front end of arm 82 and circumferential direction.In addition, wiring substrate 8 has in annulus Shape is configured at multiple through-holes 83 of the outer peripheral edge of Wiring pattern forming portion 81.Wiring substrate 8 will be by will be outstanding from insulating part 25 Terminal pins 28 are inserted into through-hole 83 and carry out solder and be fixed on stator 23.Coating is exhausted in the through-hole 83 inserted with terminal pins 28 The bonding agent of edge.Terminal pins 28 are fixed in through-hole 83 as a result,.Wiring substrate 8 passes through the edge than 83 outer side of through-hole Divide and abuts with the reinfusion side flange portion 251 of insulating part 25 and positioned on axis direction L.

Fig. 4 is the vertical view of the wiring substrate 8 from the L2 of reinfusion side.3 leads 27 are fixed on wiring substrate 8. Expose core wire in the front end of lead 27.By be formed in wiring substrate 83 on pad 84 solder lead 27 core wire, will Lead 27 is fixed on wiring substrate 8, and lead 27 is electrically connected with pad 84.It is applied in the part for securing lead 27 and pad 84 The bonding agent (such as silicon systems bonding agent) of cloth insulating properties.The bonding agent and the bonding agent phase that terminal pins 28 are fixed on to through-hole 83 Together.Therefore, the 29 (reference of adhesive layer of the front end of covering lead 27 and the insulating properties of pad 84 is formed on wiring substrate 8 Fig. 1).In addition, omitting the diagram of adhesive layer 29 in Fig. 4.

As shown in figure 4,3 leads 27 are pulled around from pad 84 towards arm 82, necking part is fixed on by fixed component 58 821.As fixed component 58, strapping or heat-shrinkable tube, flexible rubber tube etc. are used.It is set to the front end of arm 82 Wide width part 822 be the shape to fall off for preventing fixed component 58.As shown in Figure 1, the configuration of arm 82 is drawn in lead taking-up portion 56 Line taking-up portion 56 is set to motor field frame 5.Lead taking-up portion 56 has the ora terminalis of the reinfusion side L2 of iron core retainer 51 Iron core retainer 51 is fixed on towards the notch 561 (referring to Fig.1, Fig. 2) of outlet side L1 notch and in a manner of covering notch 561 Peripheral surface holder for lead wire 562.The arm 82 of wiring substrate 8 is projected into iron core retainer 51 and lead across notch 561 Space between retainer 562.

Holder for lead wire 562 is installed in a manner of across the joint portion of iron core retainer 51 and brake casing 53.It is fixed It is bent to reinfusion side L2 in the front end of arm 82 in the lead 27 of arm 82, with the lead 35 to 3 power supply of electromagnetic brake The outside of motor field frame 5 is fetched into from the gap of brake casing 53 and holder for lead wire 562 together.In holder for lead wire 562 reinfusion side L2 is arranged leaded fixed part, which will be fetched to the outside of motor field frame 5 and to axis The lead 27,35 that line direction L is pulled around is fixed on the lateral surface of motor field frame 5.Lead fixed part is fixed by screw in system The pressing component 57 of the lateral surface of dynamic device shell 53 is by lead 27,35 fixed constructions.

(cover member)

As shown in Figure 1 and Figure 2, circular cover member 9 is assembled in the reinfusion side L2 of wiring substrate 8.Cover member 9 has The circular plate-like portion of the standby substrate surface that wiring substrate 8 is covered from reinfusion side L2 (i.e. the side opposite with stator 23) 91, cylindric peripheral part 92 from the outer peripheral edge of plate-like portion 91 to outlet side L1 that erected from, from the inner peripheral of plate-like portion 91 to defeated Go out the cylindric inner peripheral portion 93 of side L1 standings.As shown in Fig. 2, being formed with the notch for making lead 27 pass through in peripheral part 92 95.Notch 95 is by the shape of circumferential a part of notch of peripheral part 92.Cover member 9 is so that notch 95 and lead taking-up portion 56 The consistent mode in angle position install.

Fig. 5 (a) is the stereogram of cover member 9, and Fig. 5 (b) is the vertical view of cover member 9.As shown in Fig. 5 (a), in cover member From plate-like portion 91 to the protrusion 94 of outlet side L1 (i.e. 23 side of stator) ribbed outstanding there are three being formed on 9.Three protrusions 94 are The arc-shaped of same diameter is configured in the angular range in addition to the angular range for being formed with notch 95.As shown in Figure 1, cover The front end face of the protrusion 94 of component 9 is opposed on axis direction L with wiring substrate 8.Therefore, cover member 9 is limited by protrusion 94 Relative to the position on the axis direction L of wiring substrate 8, it is ensured that the distance of wiring substrate 8 and the plate-like portion of cover member 9 91.

As shown in Figure 1, cover member 9 is configured between wiring substrate 8 and electromagnetic brake 3, it can be in wiring substrate 8 and electricity L is moved in the axial direction between magnetic brake 3.The peripheral part 92 of cover member 9 is extended to depends on outlet side L1 (i.e. than wiring substrate 8 24 side of stator core) position.The axis direction L of peripheral part 92 is dimensioned to following size：Even if cover member 9 is in wiring Utmostly it is moved to the position of 3 side of electromagnetic brake between substrate 8 and electromagnetic brake 3, the front end of peripheral part 92 also position In the position for leaning on 24 side of stator core than wiring substrate 8.In addition, the inner peripheral portion 93 of cover member 9 is compared with peripheral part 92, axis side Size to L is short, but extends to the position of the inner circumferential side end face of covering wiring substrate 8.

The peripheral part 92 of cover member 9 is configured between the outer peripheral side end face of wiring substrate 8 and iron core retainer 51, from periphery Side covers the outer peripheral side end face of wiring substrate 8.In addition, the inner peripheral portion 93 of cover member 9 is configured at the inner circumferential side end face of wiring substrate 8 Between motor side rotary shaft 13, the inner circumferential side end face of wiring substrate 8 is covered from inner circumferential side.Therefore, peripheral part 92 is by wiring The outer peripheral side end face of substrate 8 insulate with iron core retainer 51, meanwhile, inner peripheral portion 93 is by the inner circumferential side end face of wiring substrate 8 and electricity Motivation sidespin shaft 13 insulate.In addition, the plate-like portion 91 of cover member 9 is configured at the plate 33 and wiring substrate 8 of electromagnetic brake 3 Between substrate surface.Therefore, plate-like portion 91 by the substrate surface of wiring substrate 8 and is fixed on the lead 27 of substrate surface and plate 33 Insulation.

(wiring substrate)

Wiring substrate 8 is four laminar substrates that four layers of wiring layer are laminated across insulating layer, has and is formed with connection U phase lines Enclose the V phases of the U phase wiring layers 8U of the U phase Wiring patterns 85U of 26U, the V phase Wiring patterns 85V for being formed with connection V phase coils 26V Wiring layer 8V, the W phase wiring layers 8W for being formed with the W phase Wiring patterns 85W for connecting W phase coils 26W (with reference to Fig. 7~Fig. 9).Separately Outside, another layer is the superficial layer 8A for being formed with pad 84 and wiring Wiring pattern 85A.Superficial layer 8A is set to wiring substrate 8 Reinfusion side L2 substrate surface.The vertical view of Fig. 4 be from the vertical view of the wiring substrate 8 of superficial layer 8A this unilateral observation, Indicate the Wiring pattern of superficial layer 8A.

Wiring substrate 8 connects the Wiring pattern of each layer and each via solder in the terminal pins 28 of the through-hole 83 of four layers of perforation The coil 26 of phase.The Wiring pattern of each layer (use by U phase Wiring pattern 85U, V phase Wiring pattern 85V, W phase Wiring patterns 85W, wiring Wiring pattern 85A) it is constituted in a manner of carrying out delta connection to three-phase coil 26.Fig. 6 is to schematically show to pass through wiring base Plate 8 carries out three-phase coil 26 definition graph of the state after delta connection.

Fig. 7 is the definition graph of U phase wiring layer 8U and U phase coils 26U, and Fig. 8 is the explanation of V phases wiring layer and V phase coils 26V Figure, Fig. 9 is the definition graph of W phases wiring layer and W phase coils 26W.In Fig. 4, Fig. 7~Fig. 9, dash area is the wiring diagram of each phase Case.U phase Wiring pattern 85U, V phase Wiring pattern 85V and W phase Wiring patterns 85W has the inner circumferential for being set to wiring substrate 8 respectively The annular section 86 of side and from annular section 86 towards the radially projecting outburst area 87 in substrate outer peripheral edge.87 shape of outburst area As position corresponding with the quantity of the coil 26 of each phase and configuration and quantity.The motor part 2 of the method be 8 pole, 12 slot, three Phase coil 26 is circumferentially arranged with the sequence of above-mentioned U, V, W.Therefore, it is circumferentially equiangularly spaced in and prominent area is set everywhere Domain 87.That is, being spaced in setting outburst area 87 everywhere with 90 ° of angle.The circumferential width of outburst area 87 is comprising adjacent Two at through-hole 83 width.In the circumferential through-hole 83 everywhere are respectively arranged between adjacent outburst area 87.

As shown in fig. 7~fig. 9, U phases Wiring pattern 85U, V phases Wiring pattern 85V and W phase Wiring pattern 85W removes prominent area The angle position in domain 87 is staggered other than this point, is same shape.The angle position of outburst area 87 on the Wiring pattern of each phase It is set to angle position corresponding with each angle position of coil 26 of phase is configured.As shown in figure 3, in this mode, from reinfusion Side L2 is observed, being ranked sequentially by U, V, W clockwise of coil 26.Therefore, from the L2 of reinfusion side, the angle of outburst area 87 Position is 15 ° of the angle position of being respectively staggered by the sequence of U, V, W clockwise.

In this mode, the quantity of U phase coils 26U is 4, but these U phase coils 26U pass through U phase Wiring patterns 85U and W Phase Wiring pattern 85W is connected in parallel.That is, for each U phase coils 26U, two of the winding ends of U phase coils 26U are wound The through-hole 83 that one in the terminal pins 28U outburst area 87 for being fixed on U phase Wiring patterns 85U is equipped with.On the other hand, another A terminal pins 28U is fixed in the through-hole 83 from the position that the outburst area 87 of U phase Wiring patterns 85U deviates.For example, as schemed Shown in 7, another terminal pins 28U is fixed on the through-hole in the position Chong Die with the outburst area 87 of W phase Wiring patterns 85W 83.As a result, between U phase Wiring pattern 85U and W phase Wiring patterns 85W, U phase coils 26U is connected in parallel.Equally, four A W phase coils 26W is connected in parallel by W phase Wiring pattern 85W and V phase Wiring patterns 85V.In addition, four V phase coils 26V are logical V phase Wiring pattern 85V and U phase Wiring patterns 85U is crossed to be connected in parallel.

As shown in figure 4, it is to include in the circumferential at adjacent two to be formed in the wiring of superficial layer 8A with Wiring pattern 85A Pattern made of the wire area 88 of the fan type of through-hole 83 circumferentially arranges.Be set to same wire area 88 two at through-hole In 83, it is fixed with two terminal pins 28 for connecting out of phase coil 26.Since each wire area 88 is not connected with each other, three Phase coil 26 is via wiring with Wiring pattern 85A by delta connection.Pad 84 is continuously in a circumferential at the three of anchor leg 27 Wire area 88 is distinguished at each setting one at the three of arrangement.In this mode, at three of the arm 82 closest to wiring substrate 8 Pad 84 is arranged in wire area 88 (part with shade).Wire area 88 is spread around from the outer peripheral edge of wiring substrate 8 to interior Adjacent peripheral edges, it is accordingly possible to ensure the wide forming region of pad 84.

(comparison with the pattern width of conventional example)

The wiring substrate of conventional example shown in Fig. 10 is with aforesaid way again it is being used for matching for the motor of 8 pole, 12 slot Line substrate is the wiring substrate that star-star connection is carried out to the coil of the motor.Star-star connection shown in Figure 10 (a)~(d) is used Wiring pattern compared with the Wiring pattern of delta connection shown in Fig. 4,7~9, pattern width is narrow.That is, being set to we It is wide that the Wiring pattern of the triangle wiring of the wiring substrate 8 of formula forms the pattern comprising two adjacent through-holes in the circumferential Degree, in contrast, the Wiring pattern of star-star connection shown in Figure 10 (a)~(d) have only include a through-hole pattern it is wide The part of degree.That is, as the method using the Wiring pattern of triangle wiring by 26 wiring of coil in the case of, and make It is compared with the Wiring pattern of star-star connection, it being capable of overstriking pattern width.

(the main effect of the method)

As described above, the motor 1 of the method is configured to, via being formed in the Wiring pattern of wiring substrate 8 to triple line Circle 26 carries out delta connection.The case where the slot number N as the method is 3 × n and the number of poles M of magnet 21 is 2 × n or 4 × n Under, when forming the Wiring pattern of wiring substrate 8 in a manner of carrying out delta connection to coil 26, and as star-star connection The case where forming Wiring pattern is compared, being capable of overstriking pattern width.Therefore, in the case where circulating high current, Wiring pattern is burnt Bad possibility is few.Therefore, in the case of using motor 1 and circulation high current at low voltage, Wiring pattern can not be made It burns out.

The wiring substrate 8 of the method has circular Wiring pattern forming portion 81, is set in the Wiring pattern forming portion 81 Set Wiring pattern (U phase Wiring pattern 85U, V phase Wiring pattern 85V, W phases Wiring pattern 85W) and pad 84.In this way, that will draw Line 27 pulls in circular Wiring pattern forming portion 81 and solder is when pad 84, need not be by connection pad 84 and wiring The pattern width constriction of the part of pattern.For example, being arranged pad at the front end of arm 82, need along 821 shape of necking part At the Wiring pattern of each phase, as a result, thin Wiring pattern is needed to form, but without using this Wiring pattern.Especially In this mode, because being formed with pad 84 in the wire area 88 of fan type, it is not necessary that the thin Wiring pattern of width is arranged. Therefore, in the case where circulating high current, the possibility that Wiring pattern is burnt out is few.

In this mode, wiring substrate 8 has to the position arm outstanding than 81 outer side of Wiring pattern forming portion 82, lead 27 is fixed on arm 82.Accordingly, even if the lead 27 for being drawn out to the outside of motor field frame 5 is pulled, power is not easy to Pad 84 and 27 fixed part of lead are transmitted to by solder.Therefore, the possibility that lead 27 is disengaged from wiring substrate 8 It is few.

In this mode, for wiring substrate 8, arm 82 has the necking part being connected with Wiring pattern forming portion 81 821, it is formed with the circumferential width wide width part 822 wider than necking part 821 in the front end of arm 82.Therefore, lead to by lead 27 It crosses in the case that fixed component 58 is fixed on necking part 821, the possibility that fixed component 58 is disengaged from arm 82 is few.Therefore, draw Line 21 is few relative to the fixed possibility disengaged of arm 82.In addition, the circumferential width of the arm 82 of wiring substrate 8 can also It is identical.In this case, if using strapping use as fixed component 58, trepanning and pass through strapping that will draw on arm 82 27 fixed construction of line, then can prevent fixed component 58 from falling off.

In this mode, it after lead 27 is drawn out to the outside of motor field frame 5, is fixed on using pressing component 57 electronic The lateral surface (lateral surface of brake casing 53) of casing body 5.That is, lead 27 by fixed component 58 and pressing component 57 two Place is fixed.Therefore, when lead 27 is pulled, power is not easy to transmit to the fixed part of pad 84 and lead 27.In addition, to electronic When the lateral surface anchor leg 27 of casing body 5, the lead direction of lead can be changed in fixed position.For example, even if to axis The direction that line direction L intersects changes lead direction, can also prevent or inhibit the fixed part that power is applied to pad 84 and lead 27 (solder portion).

In this mode, in the fixed part coating adhesive to 84 anchor leg 27 of pad, covering lead 27 and weldering are formed The adhesive layer 29 of disk 84.In this way, strengthening to fixation by using adhesive layer 29, lead 27 draws to the fixation of pad 84 The possibility that the fixed part of line 27 disengages is few.In addition, because adhesive layer 29 is made of the bonding agent of the insulating properties of silicon systems etc., institute The fixed part of pad 84 and lead 27 and other components can be insulated.Therefore, it is possible to prevent 27 mutual short circuit of lead, draw The short circuit of line 27 and other components.

In this mode, the coiling direction of the winding of all 12 coils in the salient pole 241 of stator core 24 For the same direction.Therefore, the manufacture of stator 23 becomes easy.

Claims (8)

1. a kind of motor, which is characterized in that have：Rotor has magnet；Stator core is configured at the rotor Peripheral side；The coil of three-phase is wound in the stator core；Wiring substrate connects the winding and lead of the coil；With And motor field frame, the stator core is accommodated,

The slot number N of the stator core and the number of poles M of the magnet meet condition below：N=3 × n and M=2 × n or 4 × The integer that n, n are 1 or more,

The wiring substrate has four layers of wiring layer across insulation layer stackup,

Three layers in the wiring layer are respectively formed with Wiring pattern of the connection with the coil of phase,

The superficial layer on other one layer of surface for being disposed on the wiring substrate is formed with described in electrical connection in the superficial layer and draws The pad of line and the Wiring pattern for connecting the pad with three layers of the Wiring pattern,

By being formed in three layers of the Wiring pattern and being formed in the Wiring pattern of the superficial layer, to the coil of the three-phase Carry out delta connection.

2. motor according to claim 1, which is characterized in that

The wiring substrate has circular Wiring pattern forming portion,

In the Wiring pattern forming portion, the Wiring pattern and the pad are set.

3. motor according to claim 2, which is characterized in that

The wiring substrate has from Wiring pattern forming portion arm outstanding to outer peripheral side,

The lead is fixed on the arm.

4. motor according to claim 3, which is characterized in that

The arm has the necking part being connect with the Wiring pattern forming portion and the width of circumferential direction is wider than the necking part Wide width part.

5. motor according to any one of claims 1 to 4, which is characterized in that

The lateral surface of the motor field frame is fixed in the part in the outside for being drawn out to the motor field frame of the lead.

6. motor according to claim 1, which is characterized in that

Has adhesive layer, the adhesive layer covers the pad and is fixed on the part of the lead of the pad.

7. motor according to claim 6, which is characterized in that

The adhesive layer is made of the bonding agent of insulating properties.

8. motor according to claim 1, which is characterized in that

The coiling direction for being wound in the winding of all coils of the stator core is identical.