CN101218144A - Electric power steering device - Google Patents
Electric power steering device Download PDFInfo
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- CN101218144A CN101218144A CNA2006800252025A CN200680025202A CN101218144A CN 101218144 A CN101218144 A CN 101218144A CN A2006800252025 A CNA2006800252025 A CN A2006800252025A CN 200680025202 A CN200680025202 A CN 200680025202A CN 101218144 A CN101218144 A CN 101218144A
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- 239000002826 coolant Substances 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims 1
- 239000003638 chemical reducing agent Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 21
- 238000010586 diagram Methods 0.000 description 18
- 238000009434 installation Methods 0.000 description 11
- 238000010521 absorption reaction Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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Abstract
The present invention is an electric power steering device which is arranged with the circuit module of the control device, namely a power module, a car frame module or control module and is easy to be installed on the car and has less effect caused by heating or noise. The upper half part of the gear box is formed on the box body of the rectangular solid which is arranged with a worm speed reducer at the inner side. The first plane which is outsider comparing with the axis of the electric motor shaft on the gear box viewed from the auxiliary engaging surface of the worm wheel, and the second plane intersectant with the first plane is taken as the installing surface of the car frame module and the control module. As the first plane spaces the auxiliary engaging surface of the worm wheel for farthest, therefore the effect of the heat generated from the power module can be alleviated and the effect of heat or noise to the car frame module arranged on the second plane can be alleviated.
Description
Technical field
The present invention relates to for motor vehicle driven steering device, relate in particular to the configuration structure of the circuit module of its control setup.
Background technology
Vehicle constitutes with driven steering device, detect the moment of torsion of operating the rudder that takes place on the steering shaft of the closure dish and the mechanism of operating the rudder, and according to the horsepower output at the speed of a motor vehicle control motor of operating the rudder moment of torsion and detecting with car speed sensor that detects, and the propulsive effort of electrical motor is delivered on the steering shaft and the moment of torsion of operating the rudder of auxiliary bearing circle aptly by gear and other speed reduction gearing.
In the control setup of this driven steering device, need the moment of torsion testing circuit that detects the moment of torsion of operating the rudder, according to the control circuit of the torque control motor current size of operating the rudder that detects, according to a plurality of circuit such as driving circuit based on the dutycycle driving motor of the controlling valu decision of the motor current of control circuit output, each circuit is summarized on a plurality of circuit modules of sensor assembly, control module, power model etc., and be disposed at individually separately near the gear case of steering hardware, therefore, exist to increase bad one sides such as part number of packages and assembling man-hour.
Therefore, carried by further simplifying these a plurality of circuit modules, made it to be installed on the patent documentation 1,2 (patent documentation 1:Japanese Laid Open Patent Publication2004-106703, patent documentation 2:Japanese Laid Open Patent Publication 2002-345211) on the gear case of steering hardware.
Figure 16 is along the input shaft of an example of the structure of the key position of this existing driven steering device 100 of explanation and the cutaway view that the output shaft direction is cut open.Be connected on the steering shaft that not shown bearing circle is installed input shaft 101 and by means of torsion bar 102 and input shaft 101 coaxially bonded assembly output shaft 103 be disposed at gear case 105 inside, and output shaft 103 is rotated freely by ball bearing of main shaft 106,107 and supports.Also have, input shaft 101 is rotated freely by bearing 108,109 and supports.
In gear case 105 inside, dispose worm gear reducer mechanism 110, worm screw 112 is connected on the electrical motor 111, and worm gear 113 is fixed on the output shaft 103.Also have, in the inside of gear case 105, the torque sensor 115 that detects the moment of torsion of operating the rudder is disposed at the outside of output shaft 103.Torque sensor 115 detects based on the input shaft 101 of the twist angle of the torsion bar 102 that is taken place by the moment of torsion of operating the rudder and the relative rotation between the output shaft 103 in the mode of magnetic, and its detecting element 116 is arranged at the periphery of output shaft 103.
Have again, in the inside of gear case 105, dispose as according to the control module 120 of the control circuit of the speed of a motor vehicle control motor horsepower output of operating the rudder moment of torsion and detecting with car speed sensor that detects and as the power model 123 of the motor drive circuit that constitutes by switching transistor.Control module 120 constitutes by configuration CPU and other control circuit important document on control basal plate 121, and the terminal of the detecting element 116 of torque sensor 115 is connected on the control module 120.In this constituted, control module 120 constituted one with sensor assembly, and the signal of being exported by detecting element 116 is input on the control module 120.
Also have, the terminal of power model 123 also is connected on the control module 120, and according to the dutycycle of the current control value decision that converses based on the detection moment of torsion in the control module 120 or from the speed of a motor vehicle with the switching transistor the ON/OFF mode power controlling module 123, driving motor.On it constitutes, power model 123 is fixed in is configured on the metal cartridge 124 of gear case 105 in-to-ins, and make heat that power model 123 takes place be delivered to heat radiation on the cartridge 124.
But it is such as mentioned above, when a plurality of modules such as control module, power model being installed on the gear case of steering hardware, need to strengthen the geomery of gear case, and strengthen the gear case size, then might take place: exceed the storage size of allowing when being loaded on the vehicle; Perhaps can not guarantee when alleviating vehicle collision to the impact of human body and be arranged at the absorption length of piston travel of the impact absorption mechanism on the steering shaft; Perhaps the geomery owing to gear case is bigger, thereby when impact absorption mechanism starts, the parts impact of interference absorbing mechanisms such as brake pedal that it is peripheral, thereby unfavorable conditions such as increase stroke load.In addition, as driven steering device, there is the danger that the function that should possess is at least brought influence.
Have again, because with ON/OFF mode control motor electric current, the cal val of power model is obviously bigger than other module, thereby heat-sink unit is essential, thereby the gear case of steering hardware when utilizing, is disposed at gear in-to-in gear reduction, for example as heat-dissipation radiator (thermal component), by the worm gear pair speed reduction gearing that worm and worm wheel constitute, exist its distance between shafts because of bad one sides such as het expansion changes.
In order to solve these problems, can consider to make the speed reduction gearing that holds input shaft that is connected on the steering shaft and the output shaft that is connected in the axle of operating the rudder to hold on the gear case on second plane that is formed with the 1st plane on its outer surface and roughly intersects with it, and a plurality of circuit modules that make the control circuit that constitutes the power steering hardware disperse to be installed on first plane and second plane of gear case, in addition, the bigger power model of controlling in the ON/OFF mode of cal val is installed on first plane of gear case.
Make above-mentioned a plurality of circuit module disperse to be installed in first plane of gear case and the structure on second plane, has remarkable result, specific as follows: as to reduce geomery restriction makes that the design-calculated degree of freedom increases except the erection space because of circuit module broadens, the interval between the impact absorption mechanism on the input shaft can be strengthened and be installed on, and the absorption stroke of impact absorption mechanism can be fully guaranteed; With brake pedal disturb mutually dangerous little; Use as radiator even the bigger power model of cal val is installed on first plane of gear case, the change of the distance between shafts of the above-mentioned speed reduction gearing that is caused by heat is controlled in the minimum zone; By installation power module on first plane, installation and control module and vehicle frame module etc. can make from the electric wave noise of power model or the influence that brings to control module of generating heat to be controlled in the Min. scope with the decentralized configuration circuit module each other on second plane; And need not to be used for the circuit module supply line each other and the special wiring of signal wire (SW), can reduce the wiring operation significantly, and entrucking and reduce the number of working processes easily.
But, gear case possess first plane and with second plane of quadrature roughly, first plane, and detect the lead-out terminal of moment of torsion coil of the torque sensor of the torsional angle between input shaft and the output shaft, roughly be disposed at the side on second plane of gear case along input shaft with it abreast.
On the one hand, the module installing component is, forms the roughly parts of L word shape on the whole, on the face relative with first plane of gear case power model is installed in advance, on the face relative with second plane of gear case vehicle frame module and control module is installed in advance.
For installed module installing component on gear case, at first, coolant (thermal conductive adhesive) is coated on first plane of gear case, and make the contact terminal of control module and torque detection coil the mutual almost parallel of lead-out terminal make the installing component location and move, and power model is installed on the gear case by coolant.
At this moment, be coated on coolant on first plane of gear case and below the module installing component, wiped away and expose, thereby bring influence might for the heat radiation of power model in the side.
At first, the relative gear case of module installing component is tilted, the limit is rotated the contact terminal of control module and the lead-out terminal contact edge of torque detection coil, and by coolant power model is installed on the gear case.But occur in the method, perhaps can not assembling towards departing from mutually of the hole of the contact terminal of the lead-out terminal of magnetic test coil and control module if assemble reluctantly, perhaps makes lead-out terminal possibility crooked or that lose higher, therefore, must avoid.
Also have, such as mentioned above, if a plurality of circuit modules such as the control module of simplifying, power model, sensor assembly then multiplely need make the splicing ear of its circuit component be directly connected to situation on the circuit module with the bonded assembly circuit component that connects up in the car etc. up to now.
With the configuration of circuit module, exist: perhaps the splicing ear of its circuit part is elongated; Perhaps occurring on the positional precision of the front end of the splicing ear of its circuit component under the situation of deviation etc., when being assembled on the circuit module, making splicing ear crooked and can not assemble; Assemble reluctantly, perhaps might lose splicing ear etc. and bring the situation of influence to assembling.The present invention, its purpose is, solves above-mentioned all problems.
Summary of the invention
Main purpose of the present invention is, provides the gear case of steering hardware circuit module attachment face as the control setup of driven steering device, and the driven steering device that the part number of packages is few, assembling operation is easier.
Another object of the present invention is, provide when the gear case of steering hardware used as the circuit module attachment face of the control setup of driven steering device, reduce the heat that takes place from circuit module to the influence of the gear meshing of the gear drive in the gear case and to the driven steering device of the influence of the heat of circuit module or noise.
Another object of the present invention is, provide when the gear case of steering hardware used as the circuit module attachment face of the control setup of driven steering device, make the circuit module connection each other and the driven steering device of the ease of connection between circuit module and other circuit important document.
Other purpose of the present invention is elaborated and will be clearer in conjunction with the drawings.
Description of drawings
Fig. 1 is the External view of main composition portion of the driven steering device of first embodiment.
Fig. 2 is the block diagram of main composition portion that decomposes the driven steering device of first embodiment.
Fig. 3 is the block diagram of shape of gear case of the driven steering device of explanation first embodiment.
Fig. 4 is the block diagram of the shape of the main composition parts beyond the gear case of driven steering device of explanation first embodiment.
Fig. 5 is the state of electrical motor and lid class is removed in explanation from a formation shown in Figure 1 block diagram.
Fig. 6 is the lateral plan that the terminal of the position relation between lead-out terminal, module installing component and the terminal director element of explanation gear case and torque detection coil connects first embodiment of director element.
Fig. 7 is near the cutaway view that has amplified the terminal director element shown in Figure 6.
Fig. 8 be amplified terminal connect director element second embodiment the terminal director element near cutaway view.
Fig. 9 is near the cutaway view of terminal director element that has amplified the 3rd embodiment of terminal connection director element.
Figure 10 (a) and Figure 10 (b) are the figure of the summary of the gear case of driven steering device of explanation second embodiment and module installing component.
Figure 11 is the block diagram of main composition portion that has decomposed the driven steering device of second embodiment.
Figure 12 is the block diagram of shape of main composition parts of gear case of the driven steering device of explanation second embodiment.
Figure 13 is the block diagram of the shape of the main composition parts beyond the gear case of driven steering device of explanation second embodiment.
Figure 14 is the block diagram of explanation state during assembling main composition parts on the gear case of the driven steering device of second embodiment.
Figure 15 (a) and Figure 15 (b) are the figure of the summary of the gear case of driven steering device of explanation the 3rd embodiment and module installing component.
Figure 16 is the cutaway view of an example of the existing driven steering device of explanation.
The specific embodiment
First embodiment
Describe about first embodiment of the present invention below.
Fig. 1 is the External view of main composition portion of the driven steering device of first embodiment, Fig. 2 is the block diagram that has decomposed above-mentioned main composition portion, Fig. 3 is the block diagram of the shape of explanation gear case, Fig. 4 is the block diagram of the shape of the main composition parts beyond the explanation gear case, and Fig. 5 is the state of electrical motor and lid class is removed in explanation from a formation shown in Figure 1 block diagram.In addition, become numerous and diverse, steering shaft and the input shaft that is attached thereto, output shaft and speed reduction gearing etc. are all omitted diagram for fear of accompanying drawing.
In Fig. 1 to Fig. 5,11 is the gear case of steering hardware, and 12 is electrical motor.Though it is not shown, in gear case 11 inside, the output shaft that is connected in the barrel-contoured input shaft on the steering shaft and is disposed at its in-to-in torsion bar with it coaxially and is connected on the torsion bar and disposes coaxially with input shaft, supported freely along perforation of arrow a direction and rotation, and on output shaft, be combined with not shown worm gear.Have, the lower right side of arrow a is the input shaft side again, and the upper left side is the output shaft side.The structure of input shaft, torsion bar and output shaft was for making the well-known structure similar to existing design of explanation in conjunction with Figure 16.
The flange 12a of electrical motor 12 on it constitutes, makes it to be fixed on the motor mounting face 11a of gear case 11 by screw 12b, the axle of electrical motor 12, though not shown, on its structure, make it can be connected on the worm shaft that is contained on the said gear case 11.Also have, need not put speech, worm and worm wheel are to keep suitable engagement ground to constitute.
The structure and the configuration of each parts are described below in conjunction with Fig. 2 to Fig. 4.Gear case 11, its first half is formed at inside to be held on the cuboid 11b of box shape of worm screw, and when the point of engagement between worm and worm wheel are observed, be formed with than the axis of the motor reel that connects worm shaft also in the outer part the first plane 11b1 and the second plane 11b2 of the input side that vertically intersects with the L word shape with the first plane 11b1, the first plane 11b1 and the second plane 11b2 use as the attachment face of the circuit module of narrating below.
Also have, the first plane 11b1 is, when the point of engagement between worm and worm wheel are observed, than the axis of motor reel also in the outer part, with the Plane intersects of the axis that comprises above-mentioned point of engagement and motor reel, be positioned at from above-mentioned point of engagement locational plane farthest.
The lower part of gear case 11 is formed on the semi-round casing 11c that holds worm gear, and constitutes one with the cuboid of box shape.On the side of semi-round casing 11c, set up the distortion that is useful on by the torsion bar that connects input shaft and output shaft, detection operate the rudder moment of torsion torque sensor and keep the cartridge 11d of the ball bearing of main shaft of input shaft, and the lead-out terminal 15a of the torque detection coil 15 of torque sensor is exposed on the position near the second plane 11b2 of cartridge 11d.
The face of the first plane 11b1 that faces gear case 11 of module installing component 13 forms rectangle framework 13a.The compacting part performance function of rectangle framework 13a during as the first plane 11b1 that power model PM is installed to gear case 11, on it constitutes, rectangle framework 13a is disposed on the face of a last side of power model PM, and is fixed in by screw 17 on the first plane 11a1 of gear case 11.
The face contact of next side by making power model PM is fixed on the first plane 11b1 of gear case 11, and gear case 11 is brought into play its function as radiator, can make the heat radiation to the gear case 11 of the transfer of heat that takes place among the power model PM.
Also have, on rectangle framework 13b, be assembled with, form vehicle frame module FM as the cond 21,22 of power circuit and other circuit important document and relay 23 etc. in the face of the second plane 11b2 of the gear case 11 of module installing component 13.
Have again, be assembled in the installation portion 13c that constitutes control module CM in the face of the outside of the vehicle frame module FM of the rectangle framework 13b of the second plane 11b2 of the gear case 11 of module installing component 13.
On module installing component 13, be provided with adaptor union 14a and power connector 14b that is connected driving power (storage battery) that the control signal wire between the various piece with car body is connected and the Terminal of motor adaptor union 14c that connects Terminal of motor.
Also have, be installed on the power model PM on the module installation portion 13, control module CM, the circuit module of vehicle frame module FM etc., possess connection terminal each other and other circuit important document, for example control module CM possesses terminal or the through hole CMa of the lead-out terminal 15a that connects torque detection coil 15, it is constructed as follows: by on module installation portion 13 circuit module being installed, also have, module installation portion 13 is installed on first and second plane of gear case 11, finish circuit module connection each other and with other circuit important document between be connected, and also finish and above-mentioned adaptor union 14a, connection between power connector 14b and the Terminal of motor 14c.
The following describes its assembly process.As prerequisite, make inside at gear case 11, it is supported freely that the input shaft that is connected on the steering shaft, torsion bar and output shaft are rotated, and worm gear is attached on the output shaft, and make with the worm gear engaged worm and also rotate freely and support by being disposed at bearing in the gear case 11.
Also have, electrical motor 12 is assembled into, if make it to be fixed on the motor mounting face 11a of gear case 11, then the axle of electrical motor 12 is connected to and is supported on the gear case 11 in-to-in worm screws, and by the driving output shaft rotating drive of electrical motor 12.
Also have, the circuit module separately of power model PM, control module CM, vehicle frame module FM is made be in assemblnig state, and the power supply terminal 12d of electrical motor 12 is made to be assembled on the Terminal of motor adaptor union 14c that is arranged on the vehicle frame module FM.
At first, the rectangle framework 13a of face that will be relative with the first plane 11b of the gear case 11 of the module installing component 13 that is assembled with vehicle frame module FM is configured on the face of a last side of power model PM, and module installing component 13 is fixed on the first plane 11b1 of gear case 11 by screw 17.At this moment, the terminal of power model PM electrically is connected on the cooresponding terminal of vehicle frame module FM.
When the first plane 11b1 that power model PM is fixed on gear case 11 goes up, can on the first plane 11b1 of gear case 11, apply heat radiation lubricating fat.By coating heat radiation lubricating fat, the heat of power model PM is delivered on the gear case 11 effectively.
Secondly, control module CM is installed on the installation portion 13c of module installing component 13 in the outside that is positioned at vehicle frame module FM, and module installing component 13 is fixed on the second plane 11b2 of gear case 11 by screw 18.Make the control signal terminal of control module CM electrically be connected on the cooresponding control signal terminal of vehicle frame module FM, and the lead-out terminal 15a that is exposed to the torque sensor near the cartridge 11d of the input shaft side the second plane 11b2 of input side of gear case 11 also electrically is connected on the cooresponding terminal of control module CM.
Secondly, with screw 12b electrical motor 12 is fixed on the motor mounting face 11a of gear case 11.Make the turning cylinder of electrical motor 12 be connected on the worm shaft that is contained in the gear case 11, the power supply terminal 12d of electrical motor 12 is by making it to be fixed on screw 12e the last and electrically connection of Terminal of motor adaptor union 14c of vehicle frame module FM.
By at the outside of control module CM mounting cover 20a, and on Terminal of motor adaptor union 14c mounting cover 20b, finish assembling.
Have again, in Shuo Ming the embodiment, be described according to the structure of in gear case, holding the speed reduction gearing that constitutes by worm and worm wheel, and speed reduction gearing is not to be defined in this in the above, need not put speech, also can adopt the speed reduction gearing of other form.
Secondly, about circuit module connection each other as the structure of characteristic of the present invention, for example between power model and the control module be connected or circuit module and other circuit important document between the connection structure that is connected etc. and be used for the bonded assembly terminal and connect director element and describe.
Here, the example as the connection structure between circuit module and other circuit important document describes about the connection structure between the lead-out terminal 15a of control module and torque detection coil 15.
As Fig. 2, as shown in Figure 4, in next side of the rectangle framework 13b of module installing component 13, terminal connects director element 16 and framework 13b forms one.On the cartridge 11d of gear case 11, the lead-out terminal 15a of the torque detection coil 15 of torque sensor is exposed on the position near the second plane 11b2 of cartridge 11d.Also have, on control module CM, be formed with the through hole CMa of the lead-out terminal 15a of the circuit of link control module electrically and torque detection coil 15.
Fig. 6 is the lateral plan of the position relation between the terminal director element 16a of lead-out terminal 15a, module installing component 13 and first embodiment of explanation gear case 11 and torque detection coil 15, and Fig. 7 is near the cutaway view that has amplified the terminal director element 16a of its first embodiment.Have, in Fig. 6 and Fig. 7, symbol S represents input shaft again.
As Figure 6 and Figure 7, when the first plane 11b1 that moves and be installed on gear case 11 along a direction shown in Figure 6 as the rectangle framework 13a that makes the module installing component goes up, the lead-out terminal 15a of torque detection coil 15 connects terminal and connects director element 16a, and then connect through hole CMa on the circuit substrate of the control module CM on the casing 13b be installed on module installing component 13, and electrically on the bonded assembly position, dispose each above-mentioned parts at lead-out terminal 15a and control module CM.
Cross sectional shape is such as shown in Figure 7, the terminal of first embodiment connects director element 16a, the external diameter of the aperture abundant specific output terminal 15a of the insertion oral-lateral end of its insertion mouth is big, form attenuate gradually along its aperture, depths of patchhole conical or slightly be cone shape curved surface, and cylindrical-conical front end forms the bigger external diameter of the external diameter of specific output terminal 15a only.And terminal connects director element 16a and forms one at next side and the module installing component 13 of the rectangle framework 13b of module installing component 13.
Below in conjunction with Fig. 6, Fig. 7 erecting work is described.At first, the rectangle framework 13a that makes the module installing component 13 that circuit modules such as control module CM are installed moves and is fixed on the first plane 11b1 of gear case 11 along arrow a direction shown in Figure 6.The lead-out terminal 15a of torque detection coil 15 is directed into the cylindrical-conical patchhole of terminal connection director element 16a and is remedied on the correct position, and the through hole CMa on the circuit substrate of perforation control module CM.Then, as required, pad (joint Terminal) by soldering lead-out terminal 15a and through hole CMa etc. makes it electrically to connect, and fulfils assignment.
Make this structure, even on the lead-out terminal 15a of torque detection coil 15, some displacements or bending occur, also can be remedied on the correct position by the cylindrical-conical patchhole that terminal connects director element 16a, therefore, can carry out connection between control module CM and the torque detection coil 15 easily.
Fig. 8 is that the terminal that amplified second embodiment connects near the cutaway view the director element 16b, is the corresponding figure of structure with above-mentioned first embodiment shown in Figure 7.
Cross sectional shape is such as shown in Figure 8, and the terminal of second embodiment connects director element 16b, and the aperture of the insertion oral-lateral end that it the inserts mouthful only external diameter of specific output terminal 15a is big, also roughly keeps certain even constitute along its aperture, depths of patchhole.And terminal connects director element 16b and forms one with it in next side of the rectangle framework 13b of module installing component 13.
Because its erecting work is identical with the situation of first embodiment, therefore, omit explanation, also only the external diameter of specific output terminal 15a is big and terminal connects the aperture of insertion oral-lateral end of insertion mouth of director element 16b, therefore, even if corresponding situation than first embodiment, the displacement of the lead-out terminal 15a of rectifiable magnetic test coil 15 or crooked little, when installation site to the module installing component 13 of gear case 11, installation site to the control module CM of module installing component 13, when the position of the through hole CMa on the circuit substrate and the running of the high precision such as position of lead-out terminal 15a ground, also can be correct, easily link control module CM and torque detection coil 15.
Fig. 9 is that the terminal that amplified the 3rd embodiment connects near the cutaway view the director element 16c, is the corresponding figure of structure with above-mentioned first embodiment shown in Figure 7.
Cross sectional shape is such as shown in Figure 9, the terminal of the 3rd embodiment connects director element 16c, the external diameter of the aperture specific output terminal of the insertion oral-lateral end of its insertion mouth is big, form attenuate gradually along its aperture, depths of patchhole conical or slightly be cone shape curved surface, and cylindrical-conical front end forms the bigger aperture of the external diameter of specific output terminal 15a only.This point is identical with first embodiment, and and the difference between first and second embodiment be, it is not rectangle framework 13b one side that is installed on module installing component 13 that terminal connects director element 16c, but be installed on control module CM circuit substrate through hole CMa above.
In this structure, also same with first, second embodiment, connect director element by means of terminal, even on the lead-out terminal 15a of torque detection coil 15, some displacements or bending occur, also can be remedied on the correct position by the cylindrical-conical patchhole that terminal connects director element 16a, therefore, can carry out connection between control module CM and the torque detection coil 15 easily.
And, according to the 3rd embodiment, even, terminal also can be set connect director element being provided with on the module installing component 13 under the terminal connection director element situation of difficult, and the precision of the position of the through hole CMa of raising terminal connection director element 16c and control module CM, and can cheaply make.
More than, be illustrated by relating to the example that terminal of the present invention connects on the connection structure between the lead-out terminal 15a that director element 16 (16a, 16b, 16c) is applied to control module CM and torque detection coil 15, and relate to terminal connection director element of the present invention is not to be defined on the foregoing description, need not put speech, also can make it to be applied to other circuit module each other or and other circuit important document between connection structure on.
Second embodiment
Driven steering device about second embodiment of the present invention describes below.The driven steering device of second embodiment, except different with the shape of the gear case of the driven steering device of first embodiment and module installing component, other structure member does not change, therefore, to structure member filling prosign and the omission explanation identical, and only different part is described with the driven steering device of first embodiment.
Figure 10 is the figure of the summary of the gear case 25 of driven steering device of explanation second embodiment and module installing component 26, and this structure with the Figure 17 (a) that illustrates in problem to be solved by this invention and Figure 17 (b) is made comparisons and then understood easily.State before the loading of 10 (a) representation module installing component 13, Figure 10 (b) represents laden state.
Be formed with on the gear case 25 of second embodiment first plane 25b1 and with the input shaft approximate vertical and with the second plane 25b2 of the first plane 25b1 with the input shaft side that intersects greater than 90 ° angle of intersection θ, and use as the circuit module attachment face.Also have, the lead-out terminal 15a of torque sensor is big to being disposed at abreast in the gear case 25 with input shaft.
On the one hand, on the face relative of module installing component 26, power model PM is installed, on the face relative vehicle frame module FM and control module CM is installed with the second plane 25b2 with the above-mentioned first plane 25b1.This point is identical with first embodiment.
On gear case 25 during installed module installing component 26, at first, coolant HD is coated on the first plane 25b1, and module installing component 26 is roughly moved abreast to arrow a direction with input shaft, when then being installed on the first plane 25b1 by means of coolant HD power model PM, the lead-out terminal 15a of torque sensor is connected with control module CM, and, the situation that coolant HD was wiped or extruded away the outside can not take place during installation, and the situation that lead-out terminal 15a is crooked or lose can not take place yet.
Figure 11 is the block diagram of main composition portion that has decomposed the driven steering device of second embodiment, Figure 12 is the block diagram of the shape of explanation gear case 25, Figure 13 is the block diagram of the shape of the main composition parts beyond the explanation gear case, and Figure 14 is the block diagram that the state when assembling the main composition parts on gear case is described.In addition, become numerous and diverse, steering shaft and pto input shaft that is attached thereto and speed reduction gearing etc. are all omitted diagram for fear of accompanying drawing.
The structure and the configuration of each parts are described below in conjunction with Figure 11 to Figure 14.Gear case 25, its first half is formed at inside to be held on the rectangular-shaped casing 25b of worm screw, and when the point of engagement between worm and worm wheel are observed, be formed with than the axis of the motor reel that connects worm shaft also in the outer part the first plane 25b1 and with the second plane 25b2 of the first plane 25b1 with the input shaft side that intersects greater than 90 ° angle of intersection θ and with the L word shape, and form the output shaft side than the dip plane of input shaft side further from axis.The first plane 25b1 and the second plane 25b2 use as the attachment face of circuit module.
Also have, the first plane 25b1 is, when the point of engagement between worm and worm wheel are observed, than the axis of motor reel also in the outer part and with the Plane intersects that comprises above-mentioned point of engagement and motor axis, be positioned at from above-mentioned point of engagement locational plane farthest.
The lower part of gear case 25 is formed on the semi-round casing 25c that holds worm gear, and constitutes one with the casing 25b of cuboid.Though it is not shown, on the side of semi-round casing 25c, set up the distortion that is useful on according to the torsion bar that connects input shaft and output shaft, detection operate the rudder moment of torsion torque sensor and keep the cartridge 25d of the ball bearing of main shaft of input shaft, and the lead-out terminal 15a of the torque detection coil 15 of torque sensor is exposed on the position near the second plane 25b2 of cartridge 25d.
The face of next side by making power model PM is fixed on the first plane 25b1 of gear case 25 by radiator HD, gear case 25 is brought into play its function as radiator, can make the over-all heat transfer radiator HD that takes place among the power model PM be delivered to heat radiation on the gear case 25.Other structure is identical with first embodiment, therefore, omits explanation here.
The 3rd embodiment
Driven steering device about the 3rd embodiment of the present invention describes below.Figure 15 is the figure of the summary of the gear case 31 of driven steering device of explanation second embodiment and module installing component 33, and this structure with the Figure 17 (a) that illustrates in problem to be solved by this invention and Figure 17 (b) is made comparisons and then understood easily.State before the loading of 15 (a) representation module installing component 13, Figure 15 (b) represents laden state.
In the gear case 31 of the 3rd embodiment, the first plane 31b1 and the second plane 31b2 generally perpendicularly, be L word shape ground and intersect.
And the lead-out terminal of torque sensor 15 is comprising on the plane of above-mentioned input shaft, and the lead-out terminal leading section be disposed at obliquely relative input shaft away from direction on.
On the one hand, on the face relative of module installing component 33, power model PM is installed, on the face relative vehicle frame module FM and control module CM is installed with the second plane 31b2 with the above-mentioned first plane 33b1.This point is identical with first embodiment and second embodiment.
On gear case 31 during installed module installing component 33, at first, coolant HD is coated on the first plane 31b1, and the extending direction along the lead-out terminal leading section of torque sensor 15 moves to arrow b direction from the upper right side of 15 (b) relative to input shaft to make module installing component 33, when then being installed on the first plane 33b1 by means of coolant HD power model PM, the lead-out terminal 15a of torque sensor is connected with control module CM.And, the situation that coolant HD was wiped or extruded away the outside can not take place during installation, the situation that lead-out terminal 15a is crooked or lose can not take place yet.
Details as for the driven steering device that possesses gear case and module installing component of the 3rd embodiment, because it is identical with the gear case and the module installing component of above-mentioned first embodiment, and others do not have different part, therefore, omit explanation here.
Claims (19)
1. a driven steering device is characterized in that,
Possess:
Gear case rotates the input shaft and the output shaft that is connected the mechanism of operating the rudder of support and connection steering shaft freely, and possesses first plane and the second crossing with it plane at its outside face;
Speed reduction gearing is contained in the said gear case, will be delivered on the output shaft according to the rotation of supplying with the electrical motor of the auxiliary force of operating the rudder at the moment of torsion of operating the rudder that takes place on the steering shaft;
Torque sensor is contained in the said gear case, detects the helical angle between input shaft and the output shaft and detects the moment of torsion of operating the rudder;
Control setup is controlled the motor current of above-mentioned electrical motor at least;
Above-mentioned control setup is made of a plurality of circuit modules, and circuit module is installed on first plane and second plane of said gear case.
2. driven steering device according to claim 1, it is characterized in that, the speed reduction gearing that is contained in the said gear case is a gear reduction, first plane of said gear case be when the point of mesh of said gear speed reduction gearing is observed than the axis of the center shaft of above-mentioned electrical motor in the outer part plane also, above-mentioned second plane is the plane with above-mentioned first Plane intersects.
3. driven steering device according to claim 1, it is characterized in that, the speed reduction gearing that is contained in the said gear case is a gear reduction, first plane of said gear case for when the point of mesh of said gear speed reduction gearing is observed than the axis of the center shaft of above-mentioned electrical motor also in the outer part and with the plane of the Plane intersects of the axis of the center shaft that comprises said gear point of engagement and electrical motor, above-mentioned second plane is the plane with above-mentioned first Plane intersects.
4. driven steering device according to claim 1, it is characterized in that, be contained in the gear reduction of speed reduction gearing in the said gear case for constituting by worm and worm wheel, first plane of said gear case be when the point of mesh of said gear speed reduction gearing is observed than the axis of worm shaft in the outer part plane also, above-mentioned second plane is the plane with above-mentioned first Plane intersects.
5. driven steering device according to claim 1, it is characterized in that, the speed reduction gearing that is contained in the said gear case is a gear reduction, first plane of said gear case for when the point of mesh of said gear speed reduction gearing is observed than the axis of the center shaft of above-mentioned electrical motor also in the outer part and be positioned at from said gear point of engagement locational plane farthest, above-mentioned second plane is the plane with above-mentioned first Plane intersects.
6. driven steering device according to claim 1, it is characterized in that, the speed reduction gearing that is contained in the said gear case is a gear reduction, first plane of said gear case for when the point of mesh of said gear speed reduction gearing is observed than the axis of the center shaft of above-mentioned electrical motor also in the outer part and with being positioned at of the Plane intersects of the axis of the center shaft that comprises said gear point of engagement and electrical motor from said gear point of engagement locational plane farthest, above-mentioned second plane is the plane with above-mentioned first Plane intersects.
7. driven steering device according to claim 1, it is characterized in that, the circuit module of above-mentioned control setup by the control module of loading control circuit, load direct motor drive and constitute with the power model of power circuit and the vehicle frame module of loading other circuit component; Above-mentioned power model is installed on first plane of said gear case; On second plane that other circuit component of formation vehicle frame module and control module are installed on the said gear case.
8. driven steering device according to claim 7, it is characterized in that, the lead-out terminal of above-mentioned torque sensor with respect to second plane of said gear case make squarely substantially its leading section from second plane away from direction on expose from gear case, and be connected on the control module of above-mentioned control setup.
9. driven steering device according to claim 7, it is characterized in that, the circuit module of above-mentioned control setup is assembled on the framework that possesses in the face of the face on first plane of said gear case and second plane, and forms interosculating between signal terminal between the circuit module and the power supply terminal.
10. driven steering device according to claim 7 is characterized in that, above-mentioned power model when on first plane that is installed to the said gear case, is installed on above-mentioned first plane by means of coolant.
11. driven steering device according to claim 7 is characterized in that, the circuit module of above-mentioned control setup is not except power supply supply line and the distribution that is connected in the control signal wire on the external device (ED) are exposed to outside the circuit module.
12. driven steering device according to claim 1 is characterized in that, the said gear case possess substantially perpendicular to above-mentioned input shaft and with second plane of above-mentioned first plane to intersect greater than 90 ° angle.
13. driven steering device according to claim 12, it is characterized in that, the circuit module of above-mentioned control setup by the control module of loading control circuit, load direct motor drive and constitute with the power model of power circuit and the vehicle frame module of loading other circuit component; Above-mentioned power model is installed on first plane of said gear case; On second plane that other circuit component of formation vehicle frame module and control module are installed on the said gear case.
14. driven steering device according to claim 13 is characterized in that, above-mentioned power model when on first plane that is installed to the said gear case, is installed on above-mentioned first plane by means of coolant.
15. driven steering device according to claim 1 is characterized in that, the lead-out terminal of above-mentioned torque sensor is along the planar configuration that contains above-mentioned input shaft, and the lead-out terminal leading section from input shaft away from the direction configuration that tilts.
16. driven steering device according to claim 1 is characterized in that, its circuit module of the circuit module of above-mentioned control setup between mutually connection or circuit module and other circuit important document between be connected through terminal connection director element and carry out.
17. driven steering device according to claim 16, it is characterized in that, above-mentioned terminal connects director element, possesses the through hole that inserts terminal, this through hole by the aperture from insert that mouth diminishes to the depths conical or substantially a cylindrical-conical curved surface constitute, its minor diameter part is the aperture bigger slightly than the external diameter of splicing ear.
18. driven steering device according to claim 16, it is characterized in that, above-mentioned terminal connects above the framework of top, loading circuit module that director element is disposed at the said gear case, above the substrate of circuit module or above the circuit important document, the insertion mouth that terminal connects director element be set in be arranged on circuit module or circuit important document on the relative position of splicing ear on.
19. driven steering device according to claim 16 is characterized in that, above-mentioned terminal connects director element and is made of the insulativity material.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP201267/2005 | 2005-07-11 | ||
| JP2005201267 | 2005-07-11 | ||
| JP335126/2005 | 2005-11-21 | ||
| JP360112/2005 | 2005-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101218144A true CN101218144A (en) | 2008-07-09 |
Family
ID=39624231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800252025A Withdrawn CN101218144A (en) | 2005-07-11 | 2006-07-10 | Electric power steering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101218144A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101722982A (en) * | 2008-10-24 | 2010-06-09 | 株式会社捷太格特 | Electric power steering system |
| CN101734277A (en) * | 2008-11-10 | 2010-06-16 | 株式会社捷太格特 | Electric power steering apparatus and control method thereof |
| CN103545989A (en) * | 2012-07-17 | 2014-01-29 | 株式会社捷太格特 | Motor unit |
| CN107200057A (en) * | 2016-03-16 | 2017-09-26 | 本田技研工业株式会社 | Driven steering device |
| CN111542992A (en) * | 2018-01-04 | 2020-08-14 | 日本精工株式会社 | Motor unit and electric power steering apparatus |
| CN111688789A (en) * | 2020-05-25 | 2020-09-22 | 大连创新零部件制造公司 | Steering system of double-steering-wheel instruction car |
-
2006
- 2006-07-10 CN CNA2006800252025A patent/CN101218144A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101722982A (en) * | 2008-10-24 | 2010-06-09 | 株式会社捷太格特 | Electric power steering system |
| CN101734277A (en) * | 2008-11-10 | 2010-06-16 | 株式会社捷太格特 | Electric power steering apparatus and control method thereof |
| CN103545989A (en) * | 2012-07-17 | 2014-01-29 | 株式会社捷太格特 | Motor unit |
| CN103545989B (en) * | 2012-07-17 | 2017-09-01 | 株式会社捷太格特 | Motor unit |
| CN107200057A (en) * | 2016-03-16 | 2017-09-26 | 本田技研工业株式会社 | Driven steering device |
| CN111542992A (en) * | 2018-01-04 | 2020-08-14 | 日本精工株式会社 | Motor unit and electric power steering apparatus |
| CN111688789A (en) * | 2020-05-25 | 2020-09-22 | 大连创新零部件制造公司 | Steering system of double-steering-wheel instruction car |
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