CN101258067A - Electric power steering device - Google Patents
Electric power steering device Download PDFInfo
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- CN101258067A CN101258067A CNA2006800322526A CN200680032252A CN101258067A CN 101258067 A CN101258067 A CN 101258067A CN A2006800322526 A CNA2006800322526 A CN A2006800322526A CN 200680032252 A CN200680032252 A CN 200680032252A CN 101258067 A CN101258067 A CN 101258067A
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Abstract
The present invention provides an electric power steering device having an electric motor connected to a control unit via busbars projected from the inside of the motor and assisting steering of a vehicle by controlling drive of the electric motor by the control unit. The control unit is fixed to a fixation base formed as an element of the electric motor, and the fixation base covers a connection section between the control unit and the busbars.
Description
Technical field
The present invention relates to utilize motor as being used to produce the electrically powered steering apparatus using same in the source that turns to assist torque, and more specifically, the present invention relates to a kind of electrically powered steering apparatus using same, it not only improves and is used for motor and is arranged to the mounting structure of control unit (ECU) of driving that is used to control this motor near this motor, is used for that the steering swivel system to vehicle applied the motor that turns to assist torque and is used to control the connection structure that the controller of the driving of this motor links together but also improve.
Background technology
In electric powered steering (EPS) device on being installed in vehicle etc., motor is according to being driven the torque that turns to that it applies by steering handwheel, and the rotation of this motor passes to steering hardware by speed reduction gearing, thereby helps turning to of vehicle.Be used to turn to this auxiliary motor to be electrically connected on and comprise the ECU of motor-drive circuit etc., and can drive and control by this ECU.
This electrically powered steering apparatus using same generally includes the torque sensor that turns to torque that is used to detect the steering handwheel that puts on rotation, be used to help the motor and being used to of the operation of chaufeur to control the controller of the driving of this motor, and wherein this motor is according to being driven by the torque that turns to that this torque master detected.The rotation output of this motor is used as and turns to assist torque, and this rotation output is delivered to the output shaft of the steering hardware when it is slowed down by gear mechanism.For this reason, when the steering power that puts on steering handwheel is assisted, carry out turning to of vehicle.
Usually, adopt a kind of structure of utilizing electric wiring (harness) that ECU and motor are electrically connected.But in the connection structure of this routine, in some cases, because the layout of vehicle, electric wiring is difficult to install and exists a kind of worry, the i.e. wiring of Yan Shening can cause power loss and increase radio noise.
In order to address the above problem, for example, in the references of quoting below 1, propose a kind of motor (brushless motor) and ECU (shell) to be arranged to connection structure close to each other; And Fig. 5 is this bonded assembly explanatory.In Fig. 5, brushless motor 101 and three bus-bars of shell 102 usefulness (bus bar) link together; And these three bus-bars are configured such that respectively bus-bar 103a-103c that stretches out from the inside of this brushless motor 101 and the bus-bar 104a-104c that stretches out from the inside of this shell 102 are linked together by the switch 105a-105c shown in Fig. 5 (b) respectively.
This bus-bar 103a-103c uses the magnetic material manufacturing respectively, and electromagnet 107a-107c is fixed to not towards the side of the bus-bar 104a-104c of bus-bar 103a-103c by insulation film 106.When this electromagnet 107a-107c utilized switch 105a-105c and is switched on, the bus-bar 103a-103c that is arranged on brushless motor 101 sides attracted to the bus-bar 104a-104c that is arranged on shell 102 sides, makes these bus-bars link together.
Patent documentation 1:JP-A-2005-206084
And, when the motor of electrically powered steering apparatus using same and controller link together (this controller is made of the control unit (ECU) such as the CPU that comprises various circuit), under the situation of the structure that is used for above-mentioned two elements are linked together with electric wiring, owing to be used for electrically powered steering apparatus using same is installed in the layout of this vehicle on the vehicle, this electric wiring is difficult to install sometimes.And the institute that the performance of electrically powered steering apparatus using same is installed on vehicle requires degree all increasing every year, and particularly, has required electrically powered steering apparatus using same can strengthen the turning efficiency and the heat-radiating properties of rotation and can reduce radio noise.In this case, also can adopt the structure of utilizing adaptor union that motor and controller are linked together.But when using the high adaptor union that resists in radio noise, the cost of this structure is very high.
As the measure that addresses this problem, a kind of structure has been proposed, wherein motor and controller are unified into integral body (seeing patent documentation 2).
Patent documentation 2:JP-A-2003-267233
Summary of the invention
The problem that the present invention solves
Yet, be used for the conventional structure that links together shown in Figure 5 with the motor of power steering gear and ECU, owing to be exposed to the outside as bus-bar 103a-103c on brushless motor 101 sides of electrical connections and the bus-bar 104a-104c on shell 102 sides, there is a kind of worry, the noise that promptly can generate electromagnetic waves, and electromagnetic wave noise has adverse effect to other electric components that are installed on the vehicle.And, also have a kind of worry, promptly exterior object can contact this electrical connections thereby make its short circuit.
Therefore, when adopting the connection structure of this routine, need provide cap assembly separately, this cap assembly not only is used for shielding the electromagnetic wave that produces at electrical connections, and is used to prevent that exterior object from contacting this electrical connections.This need be used to install the labour of this cap assembly, and increases the number of parts and the number of installation step, therefore increases the manufacturing cost of this structure.And the space of guaranteeing to be used for this cap assembly makes to be difficult to save and is used for this structure is installed in space on the vehicle.
Therefore, the objective of the invention is to solve the problems referred to above of in the connection structure of routine, finding.Therefore, the purpose of this invention is to provide a kind of electrically powered steering apparatus using same, the mounting structure that its improvement is used to motor is installed and is used to control the control unit (ECU) of this motor, and can reduce its space and cost.
And, in the prior art, be used for motor and control unit are unified into the single-piece structure.Particularly, when motor and control unit are linked together, adopt a kind of like this structure, wherein bus-bar is protruding from the power supply base plate (substrate) in the shell that is installed in controller, and these bus-bars are inserted in the housing of motor and connect at the housing inner bolt of motor.Therefore, in the mounting teeth roller box after, this ECU is difficult to install and take out as single parts, this is not enough to increase the efficient of assembly manipulation.Also have, in the prior art, it is opening that the bus-bar on the motor side inserts opening, and therefore, when as separate part this motor being installed, must be provided for separately preventing that dust etc. from entering the device of this bus-bar patchhole.
Therefore, the present invention is proposed to solve the problems referred to above of finding in the prior art.Therefore the objective of the invention is to increases the efficiency of assembling of electrically powered steering apparatus using same when motor and its controller are linked together.
The means of dealing with problems
Above-mentioned purpose of the present invention realizes by a kind of electrically powered steering apparatus using same, it comprises: the motor that is connected in control unit by the bus-bar that stretches out from the inside of this motor respectively, this control unit is controlled the driving of this motor to help turning to of vehicle, wherein this control unit is fixed in as the component parts of this motor and the firm banking of making, and this firm banking covers the connecting bridge between this bus-bar and this control unit.
And above-mentioned purpose realizes effectively that by a kind of electrically powered steering apparatus using same wherein this firm banking is in such mode, i.e. the electromagnetic wave that produces in the connecting bridge of this firm banking shielding between this bus-bar and control unit.
Also have, above-mentioned purpose realizes effectively by a kind of electrically powered steering apparatus using same, wherein this firm banking comprises the bus-bar recess, this bus-bar that stretches out in this motor is arranged on this bus-bar recess, and the opening of this bus-bar recess is sealed by the control unit that will be fixed in this firm banking.
Also have, above-mentioned purpose realizes effectively by a kind of electrically powered steering apparatus using same, wherein this bus-bar recess is included in the bolt-inserting hole on its bottom surface, the bolt that is used for bus-bar is connected in the splicing ear of this control unit inserts this bolt-inserting hole, and the inserting bolt patchhole is with after linking together each bus-bar and each splicing ear respectively respectively at bolt, and this bolt-inserting hole seals with sealing member.
Also have, above-mentioned purpose more effectively realizes by a kind of electrically powered steering apparatus using same, wherein with the insulate inside of above-mentioned bus-bar recess of non-conductive parts.
And, according to the present invention, provide a kind of electrically powered steering apparatus using same, comprising: be used for applying the motor that turns to assist torque to the steering swivel system of vehicle; Be used to control the controller of the driving of this motor; And as the composed component of this motor, be used for firm banking that this motor and controller are fixed thereon, wherein this firm banking comprises two or more motor bus-bars, be used for the drive current of motor is transferred to the corresponding motor coil of this motor, the splicing ear part of this corresponding motor bus-bar is stretched out from this firm banking, the corresponding motor coil that is fixed in this motor of this firm banking is connected in the motor bus-bar, and is used to transmit drive current, the corresponding electric wireline bus-bar that is fixed in this controller of this firm banking is electrically connected to the splicing ear part of this motor bus-bar.
According to said structure, because the electric wireline bus-bar of controller is connected to the motor bus-bar splicing ear part in the housing outside of this controller and motor, this controller and motor can not use electric wiring and be electrically connected to each other.Therefore, after controller and motor are assembled to gear case, need not pull down motor, controller is easy to be replaced as single parts, thereby can help to increase the efficiency of assembling of motor and controller.
And, owing on motor and controller, do not form opening, can prevent to enter motor and controller such as the exterior object of dust.
Also have, owing to when the splicing ear with the motor bus-bar of the electric wireline bus-bar of controller and motor partly links together, utilized screw, so the operation that controller and motor are assembled together can be easy to carry out.
And according to the present invention, in the splicing ear of the splicing ear partial sum electric wireline bus-bar of motor bus-bar, screw inserts elongated hole in its vertical mode intersected with each other and forming respectively.This makes not only can eliminate the installation error that (absorb) takes place when with screw the electric wireline bus-bar being connected to the splicing ear part of motor bus-bar, and eliminates the stress that produces in fitting operation easily.
Also have, because each motor bus-bar comprises the sweep that is formed on its this part of stretching out from firm banking, when promptly box lunch puts on the front of each bus-bar owing to the power of vibrating generation, this sweep is out of shape according to this vibration, thereby can prevent that stress concentration is on the base of each bus-bar is distolateral.
And, because except its splicing ear part, this motor bus-bar covers with insulating element, and owing to insulating element is inserted between the corresponding motor bus-bar, can prevent that this bus-bar is in contact with one another, and prevent the parts of this bus-bar contact conduction, thereby can prevent that short circuit from taking place.
According to the present invention, the splicing ear of motor bus-bar partly covers with the guard shield that conductive component and being used to covers this conductive component surface, and the conductive component of this guard shield is electrically connected on the shell of controller.This structure can be isolated aliunde noise and noise isolation is propagated to the outside, thereby, can strengthen the shielding properties of this electrically powered steering apparatus using same.And, not only can prevent otherwise will be, and can prevent such as the exterior object of dust attached on the corresponding motor bus-bar etc. owing to the short circuited generation that causes that contacts between miscellaneous part and corresponding bus-bar and the terminal.
Because the housing of motor is electrically connected on controller housing by firm banking, and the common noise that produces in motor is fed the shell to controller, therefore can prevent dispersing of common noise.
Therefore and because be fixed under the condition of this firm banking at this motor and controller, motor and controller are installed in the gear case, before being installed in them in the gear case, can carry out the operation that motor and controller are assembled together.This can help to strengthen the efficient of assembly manipulation.
The invention effect
According to electrically powered steering apparatus using same of the present invention, its firm banking that is configured to the composed component of this motor not only can be used for fixing this control unit (ECU), and can cover the connecting bridge between this bus-bar and the control unit.This structure not only can prevent the electromagnetic noise that the produces adverse effect to the electric component that is arranged on this connecting bridge outside in this connecting bridge, and can prevent exterior object from contacting this connecting bridge and cause short circuit.Because this owing to do not need to be provided for separately covering the cap assembly of this connecting bridge, therefore can reduce the number of parts and the number of installation step, thereby can reduce the manufacturing cost of this electrically powered steering apparatus using same.And, owing to can save the space of this electrically powered steering apparatus using same, can strengthen the degree of freedom that electrically powered steering apparatus using same is installed in the layout on the vehicle.
And, because adopt a kind of structure, wherein firm banking comprises the bus-bar recess, and the control unit that the opening of this bus-bar recess is fixed on this firm banking seals, electromagnetic wave be can be easy to shield, and the number of parts and the number of installation step do not increased.
Also have, according to the present invention, the splicing ear bolt together of the bus-bar of motor and control unit together after, seal this bolt-inserting hole with sealing member.Can shield electromagnetic wave more for certain like this.
And, according to the present invention,, therefore can provide following effect: promptly, can strengthen the output performance of this electrically powered steering apparatus using same, and can reduce its manufacturing cost owing to be electrically connected electric wireline without electric wiring or adaptor union; Can reduce radiated noise; Can strengthen the noise robustness and the efficiency of assembling of this electrically powered steering apparatus using same; After in controller is installed in gear case, can strengthen the efficient of Assembly ﹠Disassembly as the operation of this controller of single parts; And, can strengthen the heat-radiating properties of this electrically powered steering apparatus using same.And, for the improvement of patent documentation 1 be, in controller is installed in gear case after, strengthen the efficient of Assembly ﹠Disassembly as the operation of this controller of single parts.
Description of drawings
Fig. 1 is the transparent view that is used to install the mounting structure of the motor of electrically powered steering apparatus using same according to an embodiment of the invention and ECU.
Fig. 2 is the decomposition diagram of mounting structure shown in Figure 1.
Fig. 3 (a) is the cutaway view of the main portion of this motor shown in Figure 1 and the connecting bridge between the ECU.
Fig. 3 (b) is the cutaway view of the main portion of this connecting bridge, shows a kind of like this state, promptly except Fig. 3 (a), non-conductive parts also is shown is set in the recess.
Fig. 4 is the transparent view of mounting structure shown in Figure 1, screw insertion hole is shown with sealing member leak free state.
Fig. 5 (a) is the motor (brushless motor) of conventional electrically powered steering apparatus using same and the explanatory of the coupled condition between the ECU (shell): specifically, this is the external perspective view of this electrically powered steering apparatus using same, and wherein this shell and brushless motor are unified into an integral body.
Fig. 5 (b) is the motor (brushless motor) of conventional electrically powered steering apparatus using same and the explanatory of the coupled condition between the ECU (shell): specifically, this is the exemplary view of the switch sections of bus-bar in the electrically powered steering apparatus using same of routine.
Fig. 6 is the lateral plan according to electrically powered steering apparatus using same of the present invention.
Fig. 7 is the backplan of electrically powered steering apparatus using same shown in Figure 6.
Fig. 8 is the transparent view of motor and firm banking.
Fig. 9 is when viewed from above, the transparent view of this firm banking and bus-bar.
Figure 10 is when seeing from the side, the transparent view of this firm banking and bus-bar.
Figure 11 is the lateral plan of bus-bar.
Figure 12 is the transparent view of controller.
Figure 13 is when when the front is seen, the transparent view of splicing ear.
Figure 14 is the inner structure view of this splicing ear.
The inner structure view of this splicing ear of Figure 15 illustrates the state that nut is mounted.
Figure 16 is the transparent view of guard shield.
Figure 17 is the cutaway view of the main portion of this guard shield.
Figure 18 (a) is the explanatory that the step of electrically powered steering apparatus using same is installed.
Figure 18 (b) is the explanatory that the step of electrically powered steering apparatus using same is installed.
Figure 18 (c) is the explanatory that the step of electrically powered steering apparatus using same is installed.
Figure 19 is the cutaway view of the main portion of guard shield and shell, this guard shield is shown is installed in state on the shell.
Description of reference numerals
10: electrically powered steering apparatus using same
12: motor
14: controller
16: firm banking
22: the motor bus-bar
26: main body
30: the splicing ear part
34: shell
38: guard shield
40: splicing ear
201: motor
202: firm banking (electric machine flange)
203: control unit (ECU)
206: bus-bar
207: the bus-bar recess
209: the tie bolt patchhole
210: tie bolt
211: terminal base (splicing ear)
212: conductive seal (sealant tape)
The specific embodiment mode
First embodiment
Now, describe according to the first embodiment of the present invention below with reference to Fig. 1 to Fig. 4.
Fig. 1 is the transparent view that is used to install according to the mounting structure of the motor of the electrically powered steering apparatus using same of the embodiment of the invention and control unit (ECU).In Fig. 1, be used to turn to auxiliary motor 201 to comprise that this electric machine flange is the element of the component part of this motor 201 by extending the firm banking 202 that electric machine flange shape forms.The control unit (ECU) 203 that is used to control the driving of this motor 201 is fixed in this firm banking 202 by bolt of rear end plate 204a, 204b.Just, according to present mounting structure, this motor 201 and ECU 203 are configured to located adjacent one another.This ECU 203 is connected in other electric components such as power supply and various sensors by the electric wiring (not shown), so that be connected to the adaptor union 205 of the bottom that is arranged on this ECU 203.According to present embodiment, this firm banking 202 forms by extending electric machine flange, and still, this is not restrictive, but for example this firm banking 202 also can form by extending electric machine casing.
Fig. 2 is the decomposition diagram of mounting structure shown in Figure 1.Fig. 3 (a) is the cutaway view of the main portion of this motor 201 shown in Figure 1 and the connecting bridge between the ECU 203.In Fig. 2, in the surface of this base 2021 that this ECU 203 is fixed thereon, be formed with bus-bar recess 207, three bus-bars 206 (206a, 206b and 206c) that stretch out from the inside of this motor 201 respectively can be arranged on this bus-bar recess 207.On the basal surface of this bus-bar recess 207, three tie bolt patchholes 209 (209a, 209b and 209c) that upward opening is arranged, its mode is the position of their respectively corresponding three connecting bores 208 (208a, 208b and 208c), and these three connecting bores 208 (208a, 208b and 208c) are respectively formed at the fore-end of these three bus-bar 206 (see figure 1)s.Shown in Fig. 3 (a), three tie bolts 210 (210a, 210b and 210c) that are inserted into tie bolt patchhole 209 are anchored on terminal base (splicing ear) 211 by the connecting bore 208 by bus-bar 206, this terminal base 211 is arranged on the bottom of this ECU 203, thereby this motor 201 and ECU 203 are electrically connected to each other.
The upper surface of this bus-bar recess 207 forms opening, so that this motor 201 and ECU 203 can be linked together, this opening can be closed by this ECU 203 is installed on this firm banking 202 simultaneously.
On the other hand, about tie bolt hole 209 at the basal surface upward opening of this bus-bar recess 207, insert by tie bolt patchhole 209 at tie bolt 210, thereby after bus-bar 206 and terminal base 211 linked together, use conventional sealing member 212 these tie bolt patchhole 209 (see figure 4)s of sealing such as sealant tape.Just, cover this bus-bar 206 and the terminal base 211 that is used as connecting bridge between motor 201 and the ECU 203 with firm banking 202, not only this connecting bridge conductively-closed is arrived the outside so that prevent electromagnetic-wave leakage thus, and prevents that exterior object from contacting this connecting bridge from the outside.
And, shown in Fig. 3 (b), on the inside face of this bus-bar recess 207, the insulating element 213 that is made of non-conductive parts can also be set.In this case, i.e. this tie bolt 210 of box lunch when unclamping by chance can prevent that also this tie bolt 210 and bus-bar recess 207 from contacting with each other and cause ground connection.
As mentioned above, in electrically powered steering apparatus using same according to present embodiment, the firm banking 202 that forms by the electric machine flange that extends as the element of the component part of this motor 201, comprise that the bus-bar 206 that stretches out from this motor 201 inside can be arranged on bus-bar recess 207 wherein, fixing and support this ECU 203, and cover between this motor and this ECU 203 this bus-bar 206 and terminal base 211 as connecting bridge.This structure not only can shield the electromagnetic wave that produces in this connecting bridge, and can exempt and be provided for separately preventing that exterior object from contacting the needs of the cap assembly of this connecting bridge.Therefore present embodiment can reduce the number of part count and installation step, thereby not only can reduce its manufacturing cost, and save the space that vehicle is used to install electrically powered steering apparatus using same, and therefore increase the degree of freedom of the mounting arrangement of this electrically powered steering apparatus using same in vehicle.
And, in electrically powered steering apparatus using same according to present embodiment, after the terminal base 211 of bus-bar 206 and ECU203 is linked together by tie bolt 210, with the bolt-inserting hole 209 of sealing member 212 sealing openings on the basal surface of the bus-bar recess 207 of firm banking 202 of conduction.This can prevent that exterior object from entering this electrically powered steering apparatus using same from the outside.Sealing member 212 also has, owing to by the conductive material manufacturing, can be realized more sure electromagnetic wave shielding.
And, in electrically powered steering apparatus using same according to present embodiment, because nonconducting insulating element 213 is set on the inside face of bus-bar recess 207, can prevent that this bus-bar recess 207 and tie bolt 210 from contacting with each other, and prevent that therefore connected to chassis from taking place.
So far, embodiments of the invention have been described particularly.But, the invention is not restricted to this, and present embodiment can change suitably also and not break away from theme of the present invention.
Second embodiment
Now, describe according to a second embodiment of the present invention below with reference to the accompanying drawings.Specifically, Fig. 6 is the lateral plan according to electrically powered steering apparatus using same of the present invention, Fig. 7 is the backplan of electrically powered steering apparatus using same shown in Figure 6, Fig. 8 is the transparent view of motor and firm banking, Fig. 9 is the transparent view of firm banking and bus-bar when viewed from above, Figure 10 is the transparent view of this firm banking and bus-bar when seeing from the side, Figure 11 is the lateral plan of bus-bar, Figure 12 is the transparent view of controller, Figure 13 is that Figure 14 is the cut-away view of this splicing ear when the transparent view of splicing ear when the front is seen, Figure 15 is the cut-away view of this splicing ear, the state that nut is mounted is shown, and Figure 16 is the transparent view of guard shield.
In Fig. 6 to Figure 16, electric powered steering (EPS) device 10 comprises motor 12, controller (ECU) 14, with component parts such as the motor 12 of firm banking 16, this firm banking 16 forms by extending electric machine flange or electric machine casing, and simultaneously, controller 14 is screwed on firm banking 16.On firm banking 16, not only be formed with two screw holes 18 that are used for motor 12 is fixed in gear case, but also be formed with three screw holes 20 that are used for controller 14 is fixed in gear case as the component part of this motor 12.
And, on the top of this firm banking 16, be formed with three motor bus-bars 22 and can insert wherein groove 24; Be carried in the insulating resin 25 in this groove 24; And this motor bus-bar 22 covers with insulating resin 25 respectively, and because insulating resin 25, they are insulated from each other.
Apply the motor that turns to assist torque as the steering swivel system that is used for to vehicle, this motor 12 comprises, for example, three-phase brushless motor, and output shaft 28 rotatably inserts and forms cylinder form and be fixed in the main body (electric machine casing) 26 of this firm banking 16.This output shaft 28 is constructed such that it can be connected in steering hardware (not shown) as steering swivel system.In this main body 26, rotor (not shown) and stator (not shown) are installed, wherein the magnetic pole that constitutes of permanent magnet is fixed on this rotor, and this stator is arranged on the circumference of this rotor and be fixed in this main body 26.
This stator comprises, for example, the motor coil that constitutes by three-phase (armature loop) respectively, that is, U phase, V mutually and W mutually, and motor coil is electrically connected on three motor bus-bars 22 respectively.
Each has the cross section of rectangular shape by this three motor bus-bars 22 of conducting metal manufacturing, and with the linear fashion setting.Each motor bus-bar 22 comprises the terminal connecting portion that is formed on its front 30 and is formed on the flat part 31 of its base on distolateral; And between this terminal connecting portion 30 and this flat part 31, be formed with and be bent the sweep 33 that is processed into the U-shaped shape.The flat part 31 of each motor bus-bar 22 is set in the groove 24, and the part of this flat part 31 is stretched out from this firm banking 16 with this sweep 33 and this splicing ear part 30 simultaneously.
Just, unless this sweep 33 is formed on each bus-bar 22, when the power that is produced owing to vibration is applied to the front of this bus-bar 22, because the distortional stress that installation error causes concentrates on the root side (base is distolateral) of this bus-bar 22, this causes worry, and promptly this bus-bar 22 itself and/or this insulating resin 25 may break.
On the other hand, as shown in figure 11, be formed on warp architecture in each bus-bar 22 according to sweep 33, promptly box lunch is because the power of the vertical direction that vibration causes is applied to the front of this bus-bar 22, also allow this bend arm part 33 to be out of shape according to this vibration, thereby, alleviating because the stress concentration of this vibration on flat part 31 and insulating resin 25, this can prevent that this bus-bar 22 itself or this insulating resin 25 are destroyed.
In the terminal connecting portion 30 of each bus-bar 22, be formed with the elongated hole (elongated hole) 32 that is used to insert.The screw hole of this motor bus-bar 22 forms along vertical (perpendicular to the direction of motor shaft) of this bus-bar, when linking together with this motor 12 of box lunch and controller 14 usefulness screws, can eliminate their setting accuracy error.
This controller 14 comprises and forms the almost shell 34 of cuboid (cuboid) shape.Bottom at this shell 34, not only be formed with and be used for this shell solid 34 three screw holes 36 due to this firm banking 16, but also be formed with two screw holes 39 that are used for guard shield 38 is fixed in this shell 34, and between these two screw thread tapped bore 39, be fixed with non-conductive splicing ear 40.Shown in Figure 13 to 15, this non-conductive splicing ear 40 comprises that the terminal that forms flat shape shape keeps base 41, is respectively formed at this terminal and keeps two or more insulating partition wall 43 on base 41 and be separately positioned on electric wireline bus-bar 45 between the partition wall of corresponding insulation.In each electric wireline bus-bar 45, be formed with screw and insert elongated hole 42, it is corresponding to the elongated hole 32 of this motor bus-bar 22; And the back of the body face side in each elongated hole 42 is provided with nut 64.Each elongated hole 42 forms and makes it vertically intersect with the vertical of elongated hole 32 of bus-bar 22.
Just, for i.e. each motor bus-bar 22 of box lunch during from the crisscross skew (shift) of the output shaft 28 of motor 12, or when promptly there is difference in box lunch between the spacing (pitch) of the elongated hole 42 of the elongated hole 32 of this motor bus-bar 22 and non-conductive splicing ear 40, this motor bus-bar 22 and non-conductive splicing ear 40 can link together for certain, and motor bus-bar 22 and electric wireline bus-bar 45 are not applied any stress, the elongated hole 42 of this terminal 45 and the elongated hole 32 of motor bus-bar 22 form by this way, promptly make its separately vertically intersected with each other.
In shell 34, driving circuit (not shown) and other elements are installed, this driving circuit receives from the signal that is used to detect the steering power and the torque sensor (not shown) of the information of the travel condition of vehicle of expression such as steering angle and car speed, and produces motor drive current.This driving circuit allows to splicing ear 40 output motor drive currents with W electric wireline bus-bar (45,45 and 45) mutually mutually by U phase, V; And each electric wireline bus-bar 45 is included in the elongated hole 42 on its face side that is connected in motor.And, though these shell 34 usefulness metals are made, but, insulation splicing ear 40 make it stretch out from the bottom of this shell 34 because being arranged in such a way, when promptly this shell 34 of box lunch is screwed on this firm banking 16, thereby can prevent that also the corresponding motor bus-bar 22 of these shell 34 contacts from causing short circuit.
Below, will the step that electrically powered steering apparatus using same 10 is installed be described with reference to Figure 18.At first, shown in Figure 18 (a), the main body 26 of this motor 12 is placed on the firm banking 16 that the composed component by motor 12 forms, motor bus-bar 22 is separately positioned in the groove 24, and main body 26 is screwed on firm banking 16, then, controller 14 is placed on this firm banking 16 near main body 26 ground of this motor 12.
Shown in, screw 58 is inserted in the screw hole 20 of this firm banking 16, and shell 14 usefulness screws 58 are fixed on this firm banking 16.For this reason, motor bus-bar 22 is configured to towards splicing ear 40.And this main body 26 that is used as electric machine casing is connected in shell 14 by this firm banking 16 and screw 58, thereby the common noise that produces in motor 12 is fed back to the shell 34 of controller 14, thereby can control dispersing of general noise.
Secondly, when screw 60 was inserted in the elongated hole 32 of corresponding motor bus-bar 22, the front of respective screws 60 was inserted in the elongated hole 42 of splicing ear 40, and is connected in corresponding electric wireline bus-bar.That is, this motor bus-bar 22 is electrically connected on its relevant electric wireline bus-bar respectively by screw 60.
Then, shown in Figure 18 (c), be arranged at guard shield 38 under the state on the bottom side of this shell 34, cover the splicing ear part 30 of this motor bus-bar 22 with guard shield 38, and fixed part 46,48 is installed in respectively on the bottom of this shell 14, when screw 62 inserts in the screw hole of this fixed part 64,68 respectively and this screw 62 when inserting screw hole 39 respectively, because this fastening screw 62, this guard shield 38 is fixed on the bottom side of this shell 34.In this case, as shown in figure 19, because screw 62 is anchored on shell 34 by this way, promptly make the connecting bridge 56 of their relative annular shape contact, the conductive component 52 of this guard shield 38 can be electrically connected on shell 34 by screw 62.Can isolate aliunde noise like this, and isolate the propagation of noise of outside, thereby can strengthen shielding properties.And, according to this structure, can prevent since miscellaneous part and corresponding motor bus-bar 22 or terminal contact the short circuit that causes, and also can prevent because the short circuit that the exterior object such as dust causes attached to motor bus-bar 22 accordingly etc.
According to present embodiment, when motor 12 and controller 14 are fixed in this firm banking 16, because the splicing ear 30 of the corresponding motor bus-bar 22 that stretches out respectively from this firm banking 16 is connected in its electric wireline bus-bar of being correlated with in this shell 34 with screw 60, this motor 12 and controller 14 can be electrically connected to each other, thereby, can strengthen the assembly performance of present embodiment.
And, according to present embodiment, because this controller 14 is fixed on by on formed this firm banking 16 of the composed component of this motor 12, can be before this motor 12 and controller 14 be installed in the gear case, this controller 14 is fixed on this firm banking 16, and this can strengthen the efficient that motor 12 and controller 14 is installed in the assembly manipulation in the gear case.
Because the firm banking 16 according to present embodiment is used as the thermal radiation part of energy radiation from the heat of motor 12 and controller 14 generations, can strengthen the heat-radiating properties of present embodiment.And, when on the mating surfaces of the shell 34 of the mating surfaces of the main body 26 that grease is applied to this motor 12 and firm banking 16 and this controller 14 and firm banking 16, can further strengthen the heat-radiating properties of present embodiment.
, since when motor 12 and controller 14 are fixed on the firm banking 16 their gangs, this motor 12 and controller 14 can be electrically connected to each other without electric wiring, thereby can help to reduce electrical noise.
And, because corresponding motor bus-bar 22 usefulness guard shields 38 cover and this guard shield 38 is electrically connected on shell 34, when motor drive current slave controller 14 these motors 12 of transmission, aliunde noise can be isolated and noise dispersing and can be isolated to the outside, thereby can strengthen the shielding properties of present embodiment.And, not only can prevent because the short circuit that the contact between miscellaneous part and corresponding motor bus-bar 22 or the terminal causes, and can prevent that exterior object such as dust is attached to the short circuit that causes on this motor bus-bar 22 etc.
By the way, this firm banking 16 also can enoughly be different from element (independent element) manufacturing of the composed component of this motor 12.
And according to the foregoing description, the elongated hole 32 of motor bus-bar 22 is formed on the vertical of this bus-bar 22, and the elongated hole 42 of this electric wireline bus-bar 45 is formed on the horizontally set direction of this terminal 45.But alternatively, the elongated hole of corresponding bus-bar also can form by this way, promptly the elongated hole shown in the above-described embodiments with make up along the formed elongated hole of direction of intersecting with the aforementioned elongated hole on in-plane.Also have, the perhaps screw hole of motor bus-bar, perhaps the screw hole of electric wireline bus-bar can be formed elongated hole, and perhaps its both can form with any other shape of the shape that is different from this elongated hole, for example with round-shaped formation.
Though so far described the present invention in detail with reference to embodiment above-mentioned, it will also be apparent to those skilled in the art that and also can carry out variations and modifications and do not break away from the spirit and scope of the present invention.
The application is based on the Japanese patent application (patent application 2005-362658 number) of Japanese patent application of submitting on September 1st, 2005 (patent application 2005-254162 number) and submission on December 16th, 2005, so the content of these applications is incorporated into, and this is for reference.
Industrial applicibility
The present invention can improve for mounted motor and be arranged to be used for this electricity of control near this motor The mounting structure of the control module of the driving of machine (ECU) can strengthen this motor and control The efficient of the assembly manipulation that device links together, and can reduce the sky of this electrically powered steering apparatus using same Between and cost.
Claims (14)
1. electrically powered steering apparatus using same comprises:
Motor, described motor is connected to control unit by the bus-bar that stretches out in the motor respectively, and described control unit is controlled the driving of this motor to help turning to of vehicle, wherein
This control unit is fixed in the firm banking as the composed component of this motor, and
This firm banking covers the connecting bridge between this bus-bar and this control unit.
2. electrically powered steering apparatus using same according to claim 1, wherein
The electromagnetic wave that produces in the connecting bridge of this firm banking shielding between this bus-bar and control unit.
3. electrically powered steering apparatus using same according to claim 1 and 2, wherein
This firm banking comprises the bus-bar recess, and the described bus-bar that stretches out in described motor is arranged on this bus-bar recess, and
The opening of this bus-bar recess is sealed by the control unit that is fixed in this firm banking.
4. electrically powered steering apparatus using same according to claim 3, wherein
This bus-bar recess is included in the bolt-inserting hole in its bottom surface, and the bolt that is used for described bus-bar is connected in the splicing ear of described control unit inserts this bolt-inserting hole, and
Insert this bolt-inserting hole respectively with after being connected to bus-bar and splicing ear together respectively at this bolt, seal this bolt-inserting hole with sealing member.
5. electrically powered steering apparatus using same according to claim 4 further comprises:
The non-conductive parts of in-to-in of described bus-bar recess are used to insulate.
6. electrically powered steering apparatus using same comprises:
Be used for applying the motor that turns to assist torque to the steering swivel system of vehicle;
Be used to control the controller of the driving of this motor; And
As the composed component of this motor, be used for firm banking that this motor and controller are fixed thereon, wherein
This firm banking comprises two or more motor bus-bars, is used for the drive current of motor is transferred to each motor coil of this motor,
The splicing ear part of each motor bus-bar is stretched out from this firm banking,
Each motor coil that is fixed in this motor of this firm banking is connected to described motor bus-bar, and
Each electric wireline bus-bar that be fixed in this firm banking, is used to transmit this controller of drive current is electrically connected to the splicing ear part of this motor bus-bar.
7. electrically powered steering apparatus using same comprises:
Be used for applying the motor that turns to assist torque to the steering swivel system of vehicle;
Be used to control the controller of the driving of this motor; And
As the composed component that is different from this motor, be used for firm banking that this motor and controller are fixed thereon, wherein
This firm banking comprises two or more motor bus-bars, is used for motor drive current is transferred to each motor coil of this motor,
The splicing ear part of described each motor bus-bar is stretched out from this firm banking,
Each motor coil that is fixed in this motor of this firm banking is connected to this motor bus-bar, and
Each electric wireline bus-bar that be fixed in this firm banking, is used to transmit this controller of drive current is electrically connected to the splicing ear part of this motor bus-bar.
8. according to claim 6 or 7 described electrically powered steering apparatus using sames, wherein
This electric wireline bus-bar is connected to the splicing ear part of this motor bus-bar with screw.
9. electrically powered steering apparatus using same according to claim 8, wherein
In the splicing ear of the splicing ear partial sum electric wireline bus-bar of this motor bus-bar, with its vertically mode intersected with each other form screw respectively and insert elongated hole.
10. according to any one described electrically powered steering apparatus using same in the claim 6,7,8 and 9, wherein
Each motor bus-bar comprises the sweep that is formed on its part of stretching out from this firm banking, and this sweep is than the base side of more close this motor bus-bar of splicing ear part of this motor bus-bar.
11. according to any one described electrically powered steering apparatus using same in the claim 6,7,8,9 and 10, wherein
Except its splicing ear part, this motor bus-bar is insulated parts and covers, and
Insulating element is inserted between each motor bus-bar.
12. according to any one described electrically powered steering apparatus using same in the claim 6,7,8,9,10 and 11, wherein
The housing of this motor is electrically connected on the shell of this controller by this firm banking.
13., also comprise according to any one described electrically powered steering apparatus using same in the claim 6,7,8,9,10,11 and 12:
Be used to cover the splicing ear guard shield partly of this motor bus-bar, wherein
This guard shield comprises that conductive component and being used to covers the insulating element on the surface of this conductive component, and
This guard shield is electrically connected on the shell of this controller by this conductive component.
14. according to any one described electrically powered steering apparatus using same in the claim 6 to 13, wherein
Be fixed under the condition of this firm banking at this motor and controller, this firm banking is installed in the gear case.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP254162/2005 | 2005-09-01 | ||
| JP2005254162 | 2005-09-01 | ||
| JP362658/2005 | 2005-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101258067A true CN101258067A (en) | 2008-09-03 |
Family
ID=39892198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800322526A Pending CN101258067A (en) | 2005-09-01 | 2006-09-01 | Electric power steering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101258067A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780322A (en) * | 2011-05-11 | 2012-11-14 | 株式会社电装 | Drive unit |
| CN101275667B (en) * | 2007-03-30 | 2013-03-27 | 加特可株式会社 | Control unit |
| CN103066755A (en) * | 2011-10-19 | 2013-04-24 | 株式会社电装 | Driving apparatus |
| CN104512457A (en) * | 2013-10-08 | 2015-04-15 | 现代摩比斯株式会社 | Power pack device for MDPs |
| CN106797153A (en) * | 2014-09-30 | 2017-05-31 | 日本电产株式会社 | Motor |
| CN109249985A (en) * | 2017-07-12 | 2019-01-22 | 株式会社捷太格特 | Transfer |
| CN110323887A (en) * | 2018-03-30 | 2019-10-11 | 日本电产三协株式会社 | Motor |
| CN112141206A (en) * | 2020-09-28 | 2020-12-29 | 长城汽车股份有限公司 | Control method of steering system, steering system and vehicle |
| CN110574259B (en) * | 2017-04-26 | 2022-01-28 | Lg伊诺特有限公司 | Motor |
| JP7404915B2 (en) | 2020-02-13 | 2023-12-26 | 日本精工株式会社 | Motor unit and electric power steering device |
-
2006
- 2006-09-01 CN CNA2006800322526A patent/CN101258067A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275667B (en) * | 2007-03-30 | 2013-03-27 | 加特可株式会社 | Control unit |
| CN102780322B (en) * | 2011-05-11 | 2014-10-29 | 株式会社电装 | Drive unit |
| CN102780322A (en) * | 2011-05-11 | 2012-11-14 | 株式会社电装 | Drive unit |
| CN103066755B (en) * | 2011-10-19 | 2015-05-27 | 株式会社电装 | Driving apparatus |
| CN103066755A (en) * | 2011-10-19 | 2013-04-24 | 株式会社电装 | Driving apparatus |
| CN104512457B (en) * | 2013-10-08 | 2017-04-12 | 现代摩比斯株式会社 | Power pack device for MDPs |
| CN104512457A (en) * | 2013-10-08 | 2015-04-15 | 现代摩比斯株式会社 | Power pack device for MDPs |
| CN106797153A (en) * | 2014-09-30 | 2017-05-31 | 日本电产株式会社 | Motor |
| CN106797153B (en) * | 2014-09-30 | 2018-11-23 | 日本电产株式会社 | Motor |
| CN110574259B (en) * | 2017-04-26 | 2022-01-28 | Lg伊诺特有限公司 | Motor |
| CN109249985A (en) * | 2017-07-12 | 2019-01-22 | 株式会社捷太格特 | Transfer |
| CN110323887A (en) * | 2018-03-30 | 2019-10-11 | 日本电产三协株式会社 | Motor |
| JP7404915B2 (en) | 2020-02-13 | 2023-12-26 | 日本精工株式会社 | Motor unit and electric power steering device |
| CN112141206A (en) * | 2020-09-28 | 2020-12-29 | 长城汽车股份有限公司 | Control method of steering system, steering system and vehicle |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20080903 |