CN204688200U - Electric hydraulic power-assisted steering pump assembly - Google Patents

Abstract

The utility model discloses a kind of electric hydraulic power-assisted steering pump assembly, comprise electrical motor and controller, also comprise driving arm, driving arm comprises copper conductor and is wrapped in the external insulation sleeve on copper conductor, copper conductor has the first copper sheet be connected with the motor stator of described electrical motor and the second copper sheet be connected with described controller, and the first copper sheet and the second copper sheet stretch out in external insulation sleeve.Electric hydraulic power-assisted steering pump assembly of the present utility model, by arranging the driving arm be connected with motor stator and controller, replace traditional wire harness, for the connection of electrical motor and controller, driving arm is formed with the good copper conductor of electric conductivity and external insulation sleeve, there is the advantage of not easily aging, not easily short circuit, guarantee the reliability that electrical motor is connected with controller and safety.

Description

Electric hydraulic power-assisted steering pump assembly

Technical field

The utility model belongs to wheel steering system technical field, and specifically, the utility model relates to a kind of electric hydraulic power-assisted steering pump assembly.

Background technology

Electric power steering has the plurality of advantages such as energy-saving and environmental protection, safety, is the study hotspot of current servo-steering motorized.

Electric hydraulic power-assisted steering pump is the integral structure connected and composed by electrical motor, bearing and Hydraulic Pump, and motor stator is arranged on the sleeve pipe of bearing, and motor shaft to insert in sleeve pipe neck bearing hole and is connected with Hydraulic Pump.

At present, electric hydraulic power-assisted steering pump motor is all be connected by wire harness with the connection mode of its corresponding controller and power supply etc., and controller sends instruction to electrical motor, controls the rotating speed of electrical motor, and wire harness easily aging, short circuit, safety and reliability is difficult to ensure card.

In addition, be all generally use oil can as oil storage carrier in the hydraulic circuit of electric hydraulic power-assisted steering pump, for supplementing or storing the hydraulic oil in oil circuit.Due to oil can finite volume, therefore its oil reserve is also limited.

Utility model content

The utility model provides a kind of electric hydraulic power-assisted steering pump assembly, and object improves the reliability that is connected with controller of electrical motor and safety.

To achieve these goals, the technical scheme that the utility model is taked is: electric hydraulic power-assisted steering pump assembly, comprise electrical motor and controller, also comprise driving arm, driving arm comprises copper conductor and is wrapped in the external insulation sleeve on copper conductor, copper conductor has the first copper sheet be connected with the motor stator of described electrical motor and the second copper sheet be connected with described controller, and the first copper sheet and the second copper sheet stretch out in external insulation sleeve.

The material of described external insulation sleeve is nylon.

Described copper conductor has inner frame, and described external insulation sleeve is for be wrapped on inner frame by Shooting Technique.

Described first copper sheet is connected for vertical with described inner frame, and the first copper sheet stretches out towards inner frame side, and described motor stator has the stator copper sheet be welded to connect with the first copper sheet.

Described copper conductor has the 3rd copper sheet be welded to connect with the contact pin of connector.

Electric hydraulic power-assisted steering pump assembly also comprises Hydraulic Pump, bearing and oil can, bearing comprises the sleeve pipe installed matrix and be connected with installation matrix, oil can and Hydraulic Pump are located to be installed on matrix, and Hydraulic Pump is also positioned at oil can inside, and bearing also has the oil-bearing structure be communicated with oil can.

The end face of described installation matrix has bearing containing cavity, described oil-bearing structure comprises oil feed groove, the tortuous oil resevoir of setting and the cover plate for closed oil resevoir, oil feed groove and oil resevoir are located on the end face of described installation matrix, one end of oil resevoir is communicated with oil feed groove, and the other end is communicated with described bearing containing cavity.

The end face of described installation matrix is provided with the oil can installation base of annular arrangement, and described oil-bearing structure is positioned at the inner side of oil can installation base.

Described oil resevoir comprises the first oil resevoir, the second oil resevoir, the 3rd oil resevoir, the 4th oil resevoir, the 5th oil resevoir and the 6th oil resevoir that connect successively, 3rd oil resevoir, the 4th oil resevoir and the 5th oil resevoir are positioned at the inner side of the first oil resevoir, 6th oil resevoir is positioned at the inner side of the 5th oil resevoir, first oil resevoir is communicated with described oil feed groove, and the 6th oil resevoir is communicated with described bearing containing cavity.

The radian of described second oil resevoir is greater than 180 degree, and the center of circle of the second oil resevoir is positioned at the inner side of described first oil resevoir.

Electric hydraulic power-assisted steering pump assembly of the present utility model, by arranging the driving arm be connected with motor stator and controller, replace traditional wire harness, for the connection of electrical motor and controller, driving arm is formed with the good copper conductor of electric conductivity and external insulation sleeve, there is the advantage of not easily aging, not easily short circuit, guarantee the reliability that electrical motor is connected with controller and safety; In addition, by arranging oil-bearing structure on bearing, and oil resevoir is tortuous setting, fluid flows into from oil feed groove, the oil resevoir arranged along complications flow to bearing containing cavity, the oil reserve that this oil-bearing structure improves on the one hand, the fluid of inflow can be made to slow down on the one hand, improve the stability of whole oil circuit, also reduce the noise that fluid flowing produces simultaneously.

Accompanying drawing explanation

This specification sheets comprises the following drawings, shown content respectively:

Fig. 1 is the structural representation of the utility model electric hydraulic power-assisted steering pump assembly;

Fig. 2 is the structural representation of bearing;

Fig. 3 is the structural representation of oil-bearing structure;

Fig. 4 is the structural representation after oil-bearing structure removes cover plate;

Fig. 5 is the structural representation of cover plate;

Fig. 6 is the cutaway view at bearing containing cavity place;

Fig. 7 is the cutaway view of the utility model electric hydraulic power-assisted steering pump assembly;

Fig. 8 is the assembly drowing of bearing and motor stator;

Fig. 9 is the assembly drowing of bearing and circlip;

Figure 10 is the structural representation of circlip;

Figure 11 is the structural representation of driving arm;

Figure 12 is the birds-eye view of driving arm;

Figure 13 is the upward view of driving arm;

Figure 14 is the structural representation of controller;

Figure 15 is the structural representation of connector;

Figure 16 is the lateral plan of connector;

Figure 17 is the assembly drowing of driving arm and motor stator and controller;

Figure 18 is the assembly drowing of driving arm and motor stator, controller, connector;

Figure 19 is the part sectional view of driving arm;

Figure 20 is the structural representation of copper conductor;

Figure 21 is the structural representation of motor stator;

Figure 22 is that the main circuit current of driving arm moves towards schematic diagram;

Be labeled as in figure:

1, oil feed groove; 2, the first oil resevoir; 3, cover plate; 31, cover board body; 32, locating dowel pin; 33, breach; 34, liquid pass hole; 4, bearing; 41, sleeve pipe; 42, matrix is installed; 43, oil can installation base; 44, high pressure oil outlet; 45, the first boss; 46, the second boss; 47, the 3rd boss; 48, the 4th boss; 49, the 5th boss; 410, knock hole; 411, mounting hole; 412, bearing containing cavity; 413, draw-in groove; 414, positioning groove; 415, fuel feed hole; 416, support containing cavity; 5, the second oil resevoir; 6, the 3rd oil resevoir; 7, the 4th oil resevoir; 8, the 5th oil resevoir; 9, the 6th oil resevoir; 10, the first shoe cream room; 11, the second shoe cream room; 12, electrical motor; 121, motor stator; 122, rotor; 123, motor shaft; 124, stator copper sheet; 13, oil can; 131, oil returning pipe joint; 14, oil sealing; 15, bearing; 16, packing seal; 17, Hydraulic Pump; 18, circlip; 181, interior projection; 182, outer back-up ring; 19, driving arm; 191, the first copper sheet; 192, the second copper sheet; 193, the 3rd copper sheet; 194, inner frame; 195, external insulation sleeve; 196, the first through hole; 20, controller; 21, connector; 211, contact pin; 212, contact pin; 213, contact pin; 214, contact pin; 215, the first slot; 216, the second slot; 217, the 3rd slot; 218, base; 22, locating dowel pin.

Detailed description of the invention

Contrast accompanying drawing below, by the description to embodiment, be described in further detail detailed description of the invention of the present utility model, object helps those skilled in the art to have more complete, accurate and deep understanding to design of the present utility model, technical scheme, and contribute to its enforcement.

As shown in Figures 1 to 7, the utility model provides a kind of electric hydraulic power-assisted steering pump assembly, the hydraulic power-assist steering system on vehicle.This electric hydraulic power-assisted steering pump assembly comprises electrical motor 12, Hydraulic Pump 17, oil can 13 and bearing 4, bearing 4 has the sleeve pipe 41 installed matrix 42 and be connected with installation matrix 42, oil can 13 and Hydraulic Pump 17 are arranged to be installed on matrix 42, Hydraulic Pump 17 is also positioned at the inside of oil can 13, the electrical motor 12 be connected with Hydraulic Pump 17 is located on sleeve pipe 41, and bearing 4 also has the oil-bearing structure be communicated with oil can 13.This electric hydraulic power-assisted steering pump assembly adopts the running of direct motor drive Hydraulic Pump to provide operation pressure fluid to steering swivel system pressure oil circuit, there is good energy-saving effect, the fuel economy of car load can be improved, and can be arranged to determine whether to output control signals to electrical motor according to the turn around parameters signal of Real-time Obtaining, improve safety and the traveling comfort of driving.

This electric hydraulic power-assisted steering pump assembly is by fully-integrated one of parts such as electrical motor 12, Hydraulic Pump 17 and oil cans 13, and small product size is little, takes up room little, easy for installation, and compatible with environment is better, does not need to carry out special dust-proof, water-proofing treatment.

Specifically, as shown in Figure 2, the bearing 4 of this electric hydraulic power-assisted steering pump assembly comprises installation matrix 42 for installing oil can 13 and sleeve pipe 41, sleeve pipe 41 is the cylindrical member of inner hollow, for installing electrical motor 2, sleeve pipe 41 stretches out towards the side of installing matrix 42, and oil can 13 is arranged on the opposite side installing matrix 42.Be installed to after on vehicle at this electric hydraulic power-assisted steering pump assembly, oil can 13 is positioned at the top, and electrical motor 12 and sleeve pipe 41 are positioned at the below of installing matrix 42.The end face installing matrix 42 has bearing containing cavity 412, bearing 15 is placed with in this bearing containing cavity 412, this bearing containing cavity 412 is communicated with the centre hole of sleeve pipe 41 and coaxial, motor shaft 123 inserts in the centre hole of sleeve pipe 41, and insert in bearing containing cavity 412 and be connected with the main shaft of Hydraulic Pump 17, bearing 15 is enclosed within motor shaft 123, and Hydraulic Pump 17 operates under the effect of electrical motor 2, finally makes fluid flow out from high pressure oil outlet 44.This bearing 4 also comprises oil-bearing structure, this oil-bearing structure comprises oil feed groove 1, the tortuous oil resevoir of setting and the cover plate 3 for closed oil resevoir, oil feed groove 1 and oil resevoir are located on the end face of installation matrix 42, and one end of oil resevoir is communicated with oil feed groove 1, and the other end is communicated with bearing containing cavity 412.After this electric hydraulic power-assisted steering pump assembly is installed, oil can 13 is positioned at the top, oil-bearing structure is also positioned at the lower zone of Hydraulic Pump 17, oil feed groove 1 and the oil can inner space of oil-bearing structure, fluid flows into from oil feed groove 1, the oil resevoir arranged along complications flow to bearing containing cavity 412, this oil-bearing structure can improve the oil reserve of electric hydraulic power-assisted steering pump assembly on the one hand, the fluid flowing to bearing containing cavity 412 can be made on the other hand to slow down, add the stability of whole oil circuit, reduce the noise that fluid flowing produces; Meanwhile, oil-bearing structure is positioned at below oil can inner chamber, can make there is fluid all the time in bearing containing cavity 412, have good lubricant effect all the time to the bearing 15 made in bearing containing cavity 412.

As shown in Figures 2 and 3, install the oil can installation base 43 that the end face of matrix 42 is provided with annular arrangement, oil can installation base 43, for the location of oil can 13 and installation, is enclosed within when oil can 13 is installed on this oil can installation base 43.Oil-bearing structure is positioned at the inner side of oil can installation base 43, and the endoporus of oil can installation base 43 also put into by cover plate 3.As shown in Figure 5, cover plate 3 is circular configuration, and cover plate 3 is fixed on the end face of installation matrix 42, and coaxial with oil can installation base 43.

As shown in Figure 4, the oil resevoir of oil-bearing structure comprises the first oil resevoir 2, second oil resevoir 5, the 3rd oil resevoir 6, the 4th oil resevoir 7, the 5th oil resevoir 8 and the 6th oil resevoir 9 that connect successively, 3rd oil resevoir 6, the 4th oil resevoir 7 and the 5th oil resevoir 8 are positioned at the inner side of the first oil resevoir 2,6th oil resevoir 9 is positioned at the inner side of the 5th oil resevoir 8, and bearing containing cavity 412 is positioned at the inner side of the 6th oil resevoir 9.In figure, dotted line represents that the inner fluid of oil-bearing structure flows to, first oil resevoir 2 is communicated with oil feed groove 1,6th oil resevoir 9 is communicated with bearing containing cavity 412, the fluid entered from oil feed groove 1, successively through the first oil resevoir 2, second oil resevoir 5, the 3rd oil resevoir 6, the 4th oil resevoir 7, the 5th oil resevoir 8 and the 6th oil resevoir 9, flow in bearing containing cavity 412.

As shown in Figure 4, ab section is the first oil resevoir 2, first oil resevoir 2 is circular arc, and radian is greater than 180 degree, and arc length and radius are also maximum, and the first oil resevoir 2 is concentric with oil can installation base 43; Bc section is that the radian of the second oil resevoir 5, second oil resevoir 5 is greater than 180 degree, and the center of circle of the second oil resevoir 5 is positioned at the inner side of the first oil resevoir 2.Cd section is the 3rd oil resevoir the 6, three oil resevoir 6 is C shape, has the bending of two places; De section is the 4th oil resevoir the 7, four oil resevoir 7 is circular arc, and its radian is less than 180 degree, and arc length is less, is less than the arc length of the second oil resevoir 5; Ef section is the 5th oil resevoir the 8, five oil resevoir 8 is circular arc, and its radian is less than 180 degree, and the 5th oil resevoir 8 is concentric with the first oil resevoir 2; Fg section is the 6th oil resevoir the 9, five oil resevoir 8 is arc.

As shown in Figure 4, oil feed groove 1 and oil resevoir are the groove being recessed on formation at the end face installing matrix 42, thus some boss and dividing plate is formed on installation matrix 42, position as being positioned at the second oil resevoir 5 center is formed with first boss 45, and the position being positioned at the 3rd oil resevoir 6 center is formed with second boss 46.Oil-bearing structure also comprises the first shoe cream room 10 be located on the first boss 45 and the second shoe cream room 11 be located on the second boss 46, the sidewall of the first boss 45 and the second boss 46 is provided with the opening allowing fluid pass through, first shoe cream room 10 is communicated with oil resevoir by opening with the second shoe cream room 11, and the fluid entering oil resevoir is flowed in the first liquid storage cylinder and the second liquid storage cylinder by opening.By arranging the first shoe cream room 10 and the second shoe cream room 11, oil reserve can be improved further, be connected with outer oil circuit, pressure is identical, if the sidewall at the first shoe cream room 10 place does not have opening simultaneously, fluid cannot flow in the first shoe cream room 10, form negative pressure in first shoe cream room 10, and between bc section oil resevoir, mineralization pressure is poor, causes the position of corresponding first shoe cream room 10 on cover board body 31 that deformation occurs, affect cover board body 31 planeness herein, and then reduce the output performance of gear type pump; In like manner, if the sidewall at the second shoe cream room 11 place does not have opening yet, fluid cannot flow in the second shoe cream room 11, negative pressure is formed in second shoe cream room 11, and mineralization pressure is poor between cd section oil resevoir, cause the position plate generation deformation of corresponding second shoe cream room 11 on cover board body 31, affect corresponding planeness herein on cover board body 31, and then reduce the output performance of gear type pump.

As shown in Figure 4, second oil resevoir 5 is set between first oil resevoir 2 and the 3rd oil resevoir 6 and realizes arc transition, because the radian of the second oil resevoir 5 is comparatively large, the volume of the first boss 45 that its medial center is formed is relatively large, and the thickness of the dividing plate between its size two oil resevoirs more adjacent than interior outside is large; The situation of the 3rd oil resevoir 6 and the second oil resevoir 5 is similar, 3rd oil resevoir 6 has the bending of two places, and bending direction is contrary with the bending direction of the second oil resevoir 5, the volume of the second boss 46 formed inside the 3rd oil resevoir 6 is also comparatively large, and is greater than the volume of the first boss 45.Again because bearing 4 is adopt the mode of aluminium liquid cast to make blank when making, first boss 45 and the second boss 46 as larger in fruit volume, when pouring into a mould, blank can form pore herein, affect blank quality, therefore the first shoe cream room 10 need be set at the first boss 45 place, at the second boss 46 place, the second shoe cream room 11 is set, first shoe cream room 10 is circular cavity, second shoe cream room 11 is trapeziform cavity, the volume of the second shoe cream room 11 is also greater than the volume of the first shoe cream room 10, the setting of the first shoe cream room 10 makes sidewall wall thickness adjacent with the second oil resevoir 5 on the first boss 45 in the same size, the setting of the second shoe cream room 11 makes sidewall wall thickness adjacent with the 3rd oil resevoir 6 on the second boss 45 in the same size, namely as shown in Figure 3, first boss 45 is formed with the circular arc sidewall that one section of radian is greater than 180 degree, second boss 46 is formed with the sidewall of C shape, and the wall thickness of dividing plate between this two places sidewall wall thickness two oil resevoirs adjacent with interior outside is consistent, avoid the formation of pore in bearing blank casting process, improve blank quality.

As shown in Figure 3 and Figure 5, cover plate 3 has the cover board body 31 for closed oil resevoir, and the position of the corresponding oil feed groove 1 in edge of cover board body 31 is provided with breach 33, and this breach 33 makes the inner space of oil feed groove 1 and oil can 13, and such fluid just can enter.Cover plate 3 is fixedly mounted on to install on matrix 42, two locating dowel pins 32 protruded and the through hole allowing bolt pass is provided with in the side of cover board body 31, the center of cover board body 31 is provided with a through hole allowing the main shaft of Hydraulic Pump 17 pass, and this lead to the hole site aligns with bearing containing cavity 412.As shown in Figure 4, the boss installed on matrix 42 also comprises the 3rd boss 47, the 4th boss 48 and the 5th boss 49,3rd boss 47 is between the 5th oil resevoir 8 and the 6th oil resevoir 9,4th boss 48 is between oil feed groove 1 and the second oil resevoir 5, and the 5th boss 49 is between the first oil resevoir 2 and the 4th oil resevoir 7.4th boss 48 and the 5th boss 49 are for being oppositely arranged, be distributed in the both sides of bearing containing cavity 412,4th boss 48 and the 5th boss 49 are respectively equipped with a mounting hole 411, and this mounting hole 411 is tapped bore, and two mounting holes 411 align with the lead to the hole site on cover board body 31.First boss 45 and the 3rd boss 47 are for being oppositely arranged, be distributed in the both sides of bearing containing cavity 412, first boss 45 and the 3rd boss 47 are respectively equipped with a knock hole 410, match with the locating dowel pin 32 on cover board body 31, locating dowel pin 32 inserts in knock hole 410, can realize cover plate 3 and install the location on matrix 42, cover plate 3 is finally bolted.Fitting with the end face installing matrix 42 in cover board body 31 side, also namely fits with the end face of oil can installation base 43, first boss 45, second boss 46, the 3rd boss 47, the 4th boss 48 and the 5th boss, oil resevoir and shoe cream room are closed.

As shown in Figure 6, the bearing containing cavity 412 installing matrix 42 inside is circular cavity, and bearing containing cavity 412 is also coaxial with the centre hole of sleeve pipe 41, and bearing containing cavity 412 has certain degree of depth, inner placement one bearing 15.In order to avoid entering the oil liquid leakage of oil resevoir, position near bearing containing cavity 412 in the centre hole of sleeve pipe 41 is provided with oil sealing 14, oil sealing 14 is positioned at bearing 15 side, the one end open of bearing containing cavity 412 is sealed, fluid is made to be stored in bearing containing cavity 412, keep the lubrication to bearing 15, improve service life.

As shown in figs. 4 and 7, the 4th boss 48 installing matrix 42 is provided with a fuel feed hole 415, this fuel feed hole 415 is communicated with the oil duct installing matrix 42 inside, Hydraulic Pump 17 operates, the fluid of oil can 13 inside flows out through Hydraulic Pump 17 and enters fuel feed hole 415, then flow through and install matrix 42 internal galleries, finally flow out from high pressure oil outlet 44, fluid flowing as shown in phantom in Figure 7.As shown in Figure 5, because cover plate 3 encloses oil resevoir and shoe cream room, corresponding be provided with on cover board body 31 one with the liquid pass hole 34 of fuel feed hole 415 aligned in position, as described in Figure 7, this liquid pass hole 34 is manhole, its diameter is greater than the diameter of fuel feed hole 415, this liquid pass hole 34 is also communicated with the oil outlet of Hydraulic Pump 17 lower end, the packing seal 16 of an O type is provided with in liquid pass hole 34, packing seal 16 pads on the end face installing matrix 42, the oil outlet of Hydraulic Pump 17 inserts liquid pass hole 34, packing seal 16 realizes the sealing between the oil outlet of Hydraulic Pump 17 and cover board body 31, thus the fluid that Hydraulic Pump 17 oil outlet flows out flows into the fuel feed hole 415 installed on matrix 42 through liquid pass hole 34, then flow through and matrix 42 internal galleries is installed, finally flow out from high pressure oil outlet 44.

As shown in Figure 7; the oil can 13 of this electric hydraulic power-assisted steering pump assembly is fixedly connected with installation matrix 42; and seal between the two; Hydraulic Pump 17 is arranged in oil can 13; not only reduce the installing space of assembly; and the Hydraulic Pump 17 be immersed in fluid obtains the protection of replacing in relatively airtight environment, adds service life.As preferably, Hydraulic Pump 17 is gear type pump, and gear pump structure as well known in the skilled person, does not repeat them here.As shown in Figure 7, Hydraulic Pump 17 and cover plate 3 are jointly bolted to by two to install on matrix 42, and cover plate 3 is clipped in Hydraulic Pump 17 and installs between matrix 42.

As shown in Figure 1, this electric hydraulic power-assisted steering pump assembly is arranged in the hydraulic power-assist steering system of vehicle, high pressure oil outlet is connected with the oil pipe of hydraulic power-assist steering system, the oil returning pipe joint 131 that oil can 13 is arranged is connected with the oil return pipe of hydraulic power-assist steering system, realizes the recycle of fluid.Oil returning pipe joint 131 is to arrange on oil can 13 sidewall and protruding, this electric hydraulic power-assisted steering pump assembly only has high pressure hydraulic fluid port and low pressure return opening two attachment points, thus convenient installation with the oil pipe of hydraulic power-assist steering system is connected, and not easily makes mistakes.

As shown in Figure 6, the motor shaft 123 that electrical motor 12 comprises the motor stator 121 be set on sleeve pipe 41, is enclosed within the rotor 122 on motor stator 121 and inserts in sleeve pipe 41, motor shaft 123 is also fixedly connected with rotor 122.As shown in Figure 2, sleeve pipe 41 is provided with a draw-in groove 413 away from the one end of installing matrix 42, this draw-in groove 413 is along the annular groove that whole circumference extends on the outside face of sleeve pipe 41.Draw-in groove 413 is for installing circlip, and circlip is used for the axial location of motor stator 121.As preferably, as shown in Figure 9 and Figure 10, this circlip 18 comprises and is arranged in motor stator 121 side and has elastomeric outer back-up ring 182 and be connected with outer back-up ring 182 and embed draw-in groove 413 projection 181 set by sleeve pipe 41 outside face, motor stator 121 is set on sleeve pipe 41, one end of motor stator 121 is connected with driving arm 19, and the other end is spacing by circlip 18.Interior projection 181 snaps in the draw-in groove 413 of sleeve pipe 41 and circlip 18 is fixed; avoid coming off; thus the reliability of axial location can be improved; and motor stator 121 is when moving axially; can elastic deformation be there is in circlip 18; thus buffer action can be played to motor stator 121, effectively protect parts.

As shown in Figure 10, outer back-up ring 182 is cylindrical-conical thin slice, and the center of outer back-up ring 182 has the through hole allowing sleeve pipe 41 pass, and the inner edge of interior projection 181 back-up ring 182 is outside uniformly distributed circumferentially.Interior projection 181 is fixedly connected with outer back-up ring 182, form integrative-structure, and the side that interior projection 181 is back-up ring 182 toward the outside is vertically stretched out.Interior projection 181 is also the thin slice of circular arc, and have certain length along in the circumference of outer back-up ring 182, the angle between interior projection 181 and outer back-up ring 182 is greater than 90 degree.

As preferably, the thickness of interior projection 181 is identical with the depth size of draw-in groove 413, and the diameter of the circular arc inside face of interior projection 181 is equal with the interior diameter at draw-in groove 413 place, and interior projection 181 can embed in draw-in groove 413 completely, keep in touch with sleeve pipe 41, improve fixing reliability.

As shown in Figure 10, in the present embodiment, the interior projection 181 of circlip 18 is provided with four altogether, and four interior projections 181 are for being uniformly distributed.

As shown in Figure 8 and Figure 9, the outside face of sleeve pipe 41 is provided with and extends vertically and the positioning groove 414 allowing positioning key embed, positioning key is clipped between sleeve pipe 41 and motor stator 121.Motor stator 121 is set on sleeve pipe 41, and positioning key embeds in positioning groove 414 and the keyway set by motor stator inside face, realizes the circumference location of motor stator 121 on sleeve pipe 41.

As shown in Figure 8 and Figure 9, in the present embodiment, positioning groove 414 is from the end face of sleeve pipe 41, extend to the medium position place near sleeve pipe 41, and positioning groove 414 is provided with one.

The driving arm 19 of this electric hydraulic power-assisted steering pump is for realizing the connection of electrical motor 12 and controller 20, concrete, as shown in Figure 11 to Figure 13, this driving arm 19 comprises copper conductor and is wrapped in the external insulation sleeve 195 on copper conductor, copper conductor has the first copper sheet 191 for being connected with the motor stator 121 of electrical motor 12 and the second copper sheet 192 for being connected with controller 20, first copper sheet 191 and the second copper sheet 192 stretch out in external insulation sleeve 195, motor stator 121 and controller 20 are electrically connected with copper conductor, thus achieve the electrical connection of electrical motor 12 and controller 20, driving arm 19 is formed with the good copper conductor of electric conductivity and external insulation sleeve, have not easily aging, the not easily advantage of short circuit, guarantee the reliability that electrical motor is connected with controller and safety.

As preferably, the material of external insulation sleeve 195 is nylon, and insulating power are good; The material of copper conductor is red copper, and electric conductivity is good.

As shown in Figure 11, Figure 19 and Figure 20, copper conductor has inner frame 194, and external insulation sleeve 195, for be wrapped on inner frame 194 by Shooting Technique, plays insulation effect.First copper sheet 191 is connected with inner frame 194 with the second copper sheet 192, and stretches out towards the same side of inner frame 194, is in the outside of external insulation sleeve 195, is convenient to be connected with motor stator 121 and controller 20.

As shown in figure 11, the first copper sheet 191 is connected for vertical with inner frame 194, and motor stator 121 has the stator copper sheet 124 be connected for spot welding with the first copper sheet 191.In the present embodiment, the first copper sheet 191 is provided with 8 altogether, and stator copper sheet 124 is also provided with 8.Because motor stator 121 is set on the sleeve pipe 41 of bearing 4, external insulation sleeve 195 is provided with first through hole 196 allowing sleeve pipe 41 pass, 8 the first copper sheets 191 are uniformly distributed circumferentially around the first through hole 196, stator copper sheet 124 on motor stator 121 is also for being uniformly distributed, and each first copper sheet 191 is connected with a stator copper sheet 124 respectively.

As shown in Figure 11 and Figure 17, motor stator 121 and driving arm 19 are fixedly connected to form an assembly, for the ease of the assembling of motor stator 121, external insulation sleeve 195 is provided with the locating dowel pin 22 that stretches out of insulation sleeve 195 side toward the outside, this locating dowel pin 22 is positioned at outside the first through hole 196, the axis of locating dowel pin 22 parallels with the axis of the first through hole 196, and the not homonymy of locating dowel pin 22 and the first copper sheet 191 insulation sleeve 195 toward the outside stretches out.Motor stator 121 is provided with the hole of matching with locating dowel pin 22, when assembling, aims at locating dowel pin 22 with the hole on motor stator 121, and allow locating dowel pin 22 insert in the hole, then align the first copper sheet 191 and stator copper sheet 124, uses welding generator spot welding to fix, convenient for assembly.

As shown in Figure 11 to Figure 13, the second copper sheet 192 is connected for vertical with inner frame 194, and the second copper sheet 192 is for being connected with the welding circuit board of controller 20.Adapt with the structure of controller 20, in the present embodiment, second copper sheet 192 is provided with 4 places altogether, be respectively A, B, C, D place in Figure 12, first copper sheet 191 position is positioned at one end of driving arm 19, second copper sheet 192 position is positioned at the other end relative with the first copper sheet 191 on driving arm 19, A, D two second copper sheet 192 at place be positioned at relative both sides, this end, second copper sheet 192 at C place and B place A, D two place the second copper sheet 192 between, and C place second copper sheet 192 is between second copper sheet 192 and the first through hole 196 at B place; As shown in the figure, A place has been arranged side by side 3 the second copper sheet 192, B places and has been arranged side by side 2 the second copper sheet 192, C places and is provided with 1 the second copper sheet 192, D place and has been arranged side by side 4 the second copper sheets 192.

As shown in figure 17, controller is selected FREESCALE company based on the MPC5602P of Power Architecture framework and is embedded in the control program of visiting chip, which employs conventional universal circuit.The hardware of electric hydraulic power-assisted steering pump control system mainly comprises main control chip, ignition signal circuit, power management, Hall acquisition process circuit, CAN communication unit, power tube drive circuit, current acquisition reactive circuit, power-down protection circuit and JTAG download module.External circuits mainly comprises: sensor signal processing circuit; Feed circuit; The interface of automobile speed interface circuit and other external circuit.

The concrete function of controller is: receive turn around parameters signal, comprise vehicle speed signal and steering wheel angular velocity sensor signal, when ignition signal starts, controller outputs control signals to electrical motor; Machine operation is made minimumly to determine rotating speed in setting.The all mode of operation of electric hydraulic power-assisted steering pump is all by the signal such as moving velocity, steering angle of controller according to vehicle, and in conjunction with the real-time rotate speed feedback signal of electrical motor, output signal to power tube, regulate motor stator electric current, calculate optimal state, control rapidly electrical motors to rotating speed of target.

As illustrated in figures 11 and 13, copper conductor also has the 3rd copper sheet 193 for being welded to connect with the contact pin of connector 21.3rd copper sheet 193 and inner frame 194 is connected for vertical, and the not homonymy of the 3rd copper sheet 193 and the second copper sheet 192 insulation sleeve 195 toward the outside stretches out.Adapt with the structure of connector 21, in the present embodiment, 3rd copper sheet 193 is provided with 4 places altogether, be respectively E, F place in Fig. 3 and two positions between E, F place, 3rd copper sheet 193 is also co-located at same one end of driving arm 19 with the second copper sheet 192,3rd copper sheet 193 at E, F place and A, D two second copper sheet 192 at place be positioned at the same position place, end of driving arm 19, E, F place is respectively equipped with 3 the 3rd copper sheets 193; Two other position is respectively equipped with 1 the 3rd copper sheet 193, and these 2 the 3rd copper sheets 193 are for being arranged side by side, and between B place second copper sheet 192 and F place the 3rd copper sheet 193.Connector 21 has a base 218 and the first slot 215, second slot of being located on base 218 and the 3rd slot, and the first slot 215 and the 3rd slot 217 are for being oppositely arranged, and the second slot 216 is between the first slot 215 and the 3rd slot 217.Be provided with in first slot 215 in 3 contact pins 211, second slot 216 to be provided with in 1 contact pin 212 and 1 contact pin the 213, three slot 217 and be provided with 3 contact pins 84.One end of contact pin 211 stretches out in outside the first slot 215, and is connected with 3 the 3rd copper sheet 193 spot welding at E place, and the other end of contact pin 211 is exposed in the first slot 215, and the first slot 215 is for connecting steering wheel angle speed signal; One end of contact pin 84 stretches out in outside the 3rd slot 217, and is connected with 3 the 3rd copper sheet 193 spot welding at F place, and the other end of contact pin 84 is exposed in the 3rd slot 217, and the 3rd slot 217 is for connecting vehicle speed signal and ignition signal; One end of contact pin 212 and contact pin 213 stretches out in outside the second slot 216, and be connected with the 3rd copper sheet 193 spot welding of 2 between E, F place, the other end of contact pin 212 and contact pin 213 is exposed in the second slot 216, and the second slot 216 is for connecting power supply, and power supply is powering electric motors.

This driving arm achieves the connection of above-mentioned connector and controller and electrical motor, by relevant turn around parameters signal, comprises the signal transmission such as steering wheel angular velocity signal and vehicle speed signal to controller, guarantees the control of controller to motor stator.

As depicted in figs. 1 and 2, the other end relative with the end face arranging oil-bearing structure on matrix 42 is installed and is provided with the support containing cavity 416 for holding driving arm 19, driving arm 19 is also fixedly connected with installation matrix 42 by screw, sleeve pipe 42 passes from the first through hole 196196 driving arm 19, controller is between the diapire and driving arm of support containing cavity 416, the diapire of support containing cavity 416 being provided with allows three of connector 21 through holes that slot passes, three slots of connector 21 stretch out from the other end installing matrix 42, for being connected with other parts.

The structure of motor stator as shown in figure 21, motor stator has 8 weld tabs, form 8 stator copper sheets 124, wherein weld tabs a is communicated with by enamel wire with weld tabs f, weld tabs b is communicated with by enamel wire with weld tabs e, weld tabs c is communicated with by enamel wire with weld tabs h, and weld tabs d is communicated with by enamel wire with weld tabs g, forms 4 groups of circuiies parallel.

The structure of the inner frame of copper conductor as shown in figure 20, inner frame 194 is divided into nine independently copper sheets, each copper sheet is conductor, No. 1 conductor and No. 6 conductors lay respectively at one end of inner frame 194, No. 2 conductors and No. 9 conductors are between No. 1 conductor and No. 6 conductors, No. 9 conductors between No. 2 conductors and No. 1 conductor, No. 3 conductors and No. 7 conductors are positioned at No. 2 conductor the same sides, and a part for No. 3 conductors is between No. 2 conductors and No. 6 conductors, No. 5 conductors and No. 8 conductors are positioned at the opposite side of No. 2 conductors, and No. 5 conductors are between No. 8 conductors and No. 6 conductors, No. 5 conductors between No. 2 conductors and No. 6 conductors, No. 4 conductors between No. 2 conductors and No. 7 conductors, No. 4 conductors and No. 5 conductors are for being symmetrical arranged.Driving arm is also provided with inductance, electric capacity, resistance and metal-oxide-semiconductor, and No. 1 conductor is for connecting external power supply, and No. 1 conductor is also electrically connected with No. 2 conductors by inductance, and namely inductance one end is connected with No. 1 conductor, and the other end is connected with No. 2 conductors; No. 9 conductors are connected with No. 2 conductors by electric capacity, and namely electric capacity one end is connected with No. 9 conductors, and the other end is connected with No. 2 conductors, No. 9 conductors ground connection; No. 7 conductors are connected with No. 3 conductors and No. 4 conductors with No. 2 metal-oxide-semiconductors respectively by No. 1 metal-oxide-semiconductor, and namely No. 1 metal-oxide-semiconductor one end is connected with No. 7 conductors, and the other end is connected with No. 3 conductors, and No. 2 metal-oxide-semiconductor one end are connected with No. 7 conductors, and the other end is connected with No. 4 conductors; No. 8 conductors are connected with No. 5 conductors and No. 6 conductors with No. 4 metal-oxide-semiconductors respectively by No. 3 metal-oxide-semiconductors, and namely No. 2 metal-oxide-semiconductor one end are connected with No. 8 conductors, and the other end is connected with No. 5 conductors, and No. 4 metal-oxide-semiconductor one end are connected with No. 8 conductors, and the other end is connected with No. 6 conductors; No. 7 conductors are connected with No. 9 conductors by No. 1 constantan sheet resistance R1, and namely No. 1 constantan sheet resistance R1 one end is connected with No. 9 conductors, and the other end is connected with No. 7 conductors; No. 8 conductors are connected with No. 9 conductors by No. 2 constantan sheet resistance R2, and namely No. 2 constantan sheet resistance R2 one end are connected with No. 9 conductors, and the other end is connected with No. 8 conductors.No. 2 conductors have integrated II pin, IV pin, VI pin, VIII pin, No. 3 conductors has the V pin of one bending and molding, No. 4 conductors has integrated I pin, No. 5 conductors has integrated III pin, No. 6 conductors has integrated VII pin, the copper sheet that I pin, II pin, III pin, V pin, VI pin, VII pin, VIII pin, IV pin are connected with stator copper sheet 61 respectively as one, thus form 8 the first copper sheets 1.

Each copper sheet of inner frame 194 is wrapped up by external insulation sleeve 195, and each copper sheet of inner frame 194 also realizes electrical connection by inductance, electric capacity, resistance or metal-oxide-semiconductor, and inner frame 194 is also connected with the second copper sheet 192 and the 3rd copper sheet 193, forms copper conductor.Second copper sheet 192 is connected with inner frame 4 by the auxiliary circuit on the circuit card of controller 20 with the 3rd copper sheet 193.

The copper conductor of said structure, is connected to form loop with power supply, after powered up, current direction as shown in figure 22, electric current, from positive source, flows to No. 2 conductors through inductance, and then flows to the II pin, IV pin, VI pin, the VIII pin that are connected with No. 2 conductors; The II pin of No. 2 conductors welds with the weld tabs b of motor stator 121 and is communicated with, the weld tabs b of motor stator 121 is communicated with by enamel wire coil with weld tabs e, and the weld tabs e of motor stator 121 is communicated with the VII pin welding of No. 6 conductors, and then the II pin of No. 2 conductors is communicated with the VII pin of No. 6 conductors with one group of coil that weld tabs e forms by motor electronic weld tabs b, No. 6 conductors are communicated with No. 8 conductors by No. 4 metal-oxide-semiconductors; The IV pin of No. 2 conductors welds with the weld tabs d of motor stator 121 and is communicated with, the weld tabs d of motor stator 121 is communicated with by enamel wire coil with weld tabs g, and the weld tabs g of motor stator 121 is communicated with the V pin welding of No. 3 conductors, and then the IV pin of No. 2 conductors is communicated with the V pin of No. 3 conductors with one group of coil that weld tabs g forms by the weld tabs d of motor stator 121, No. 3 conductors are communicated with No. 7 conductors by No. 1 metal-oxide-semiconductor; The VI pin of No. 2 conductors welds with the weld tabs f of motor stator 121 and is communicated with, the weld tabs f of motor stator 121 is communicated with by enamel wire coil with weld tabs a, and the weld tabs a of motor stator 121 is communicated with the III pin welding of No. 5 conductors, and then the VI pin of No. 2 conductors is communicated with the III pin of No. 5 conductors with one group of coil that weld tabs a forms by motor electronic weld tabs f, No. 5 conductors are communicated with No. 8 conductors by No. 3 metal-oxide-semiconductors; The VIII pin of No. 2 conductors welds with the weld tabs h of motor stator 121 and is communicated with, the weld tabs h of motor stator 121 is communicated with by enamel wire coil with weld tabs c, and the weld tabs c of motor stator 121 is communicated with the I pin welding of No. 4 conductors, and then the VIII pin of No. 2 conductors is communicated with the I pin of No. 4 conductors with one group of coil that weld tabs c forms by motor electronic weld tabs h, No. 4 conductors are communicated with No. 7 conductors by No. 2 metal-oxide-semiconductors.

No. 1 metal-oxide-semiconductor and No. 2 MOS are by No. 1 constantan sheet resistance R1 and No. 9 conductor, and namely power cathode is communicated with, and No. 3 metal-oxide-semiconductors and No. 4 MOS are by No. 2 constantan sheet resistance R2 and No. 9 conductors, and namely power cathode is communicated with, and form two groups of power circuits in parallel.

Below by reference to the accompanying drawings the utility model is exemplarily described.Obviously, the utility model specific implementation is not subject to the restrictions described above.As long as have employed the improvement of the various unsubstantialities that method of the present utility model is conceived and technical scheme is carried out; Or without improvement, above-mentioned design of the present utility model and technical scheme directly applied to other occasion, all within protection domain of the present utility model.

Claims (10)

1. electric hydraulic power-assisted steering pump assembly, comprise electrical motor and controller, it is characterized in that: also comprise driving arm, driving arm comprises copper conductor and is wrapped in the external insulation sleeve on copper conductor, copper conductor has the first copper sheet be connected with the motor stator of described electrical motor and the second copper sheet be connected with described controller, and the first copper sheet and the second copper sheet stretch out in external insulation sleeve.

2. electric hydraulic power-assisted steering pump assembly according to claim 1, is characterized in that: the material of described external insulation sleeve is nylon.

3. electric hydraulic power-assisted steering pump assembly according to claim 1, it is characterized in that: described copper conductor has inner frame, described external insulation sleeve is for be wrapped on inner frame by Shooting Technique.

4. electric hydraulic power-assisted steering pump assembly according to claim 3, it is characterized in that: described first copper sheet is connected for vertical with described inner frame, and the first copper sheet stretches out towards inner frame side, described motor stator has the stator copper sheet be welded to connect with the first copper sheet.

5. electric hydraulic power-assisted steering pump assembly according to claim 4, is characterized in that: described copper conductor has the 3rd copper sheet be welded to connect with the contact pin of connector.

6. electric hydraulic power-assisted steering pump assembly according to claim 5, it is characterized in that: also comprise Hydraulic Pump, bearing and oil can, bearing comprises the sleeve pipe installed matrix and be connected with installation matrix, oil can and Hydraulic Pump are located to be installed on matrix, Hydraulic Pump is also positioned at oil can inside, and bearing also has the oil-bearing structure be communicated with oil can.

7. electric hydraulic power-assisted steering pump assembly according to claim 6, it is characterized in that: the end face of described installation matrix has bearing containing cavity, described oil-bearing structure comprises oil feed groove, the tortuous oil resevoir of setting and the cover plate for closed oil resevoir, oil feed groove and oil resevoir are located on the end face of described installation matrix, one end of oil resevoir is communicated with oil feed groove, and the other end is communicated with described bearing containing cavity.

8. electric hydraulic power-assisted steering pump assembly according to claim 7, is characterized in that: the end face of described installation matrix is provided with the oil can installation base of annular arrangement, and described oil-bearing structure is positioned at the inner side of oil can installation base.

9. electric hydraulic power-assisted steering pump assembly according to claim 8, it is characterized in that: described oil resevoir comprises the first oil resevoir, the second oil resevoir, the 3rd oil resevoir, the 4th oil resevoir, the 5th oil resevoir and the 6th oil resevoir that connect successively, 3rd oil resevoir, the 4th oil resevoir and the 5th oil resevoir are positioned at the inner side of the first oil resevoir, 6th oil resevoir is positioned at the inner side of the 5th oil resevoir, first oil resevoir is communicated with described oil feed groove, and the 6th oil resevoir is communicated with described bearing containing cavity.

10. electric hydraulic power-assisted steering pump assembly according to claim 9, is characterized in that: the radian of described second oil resevoir is greater than 180 degree, and the center of circle of the second oil resevoir is positioned at the inner side of described first oil resevoir.