CN107869438A - Motor pump assembly, steering and vehicle - Google Patents

Abstract

The invention discloses a kind of motor pump assembly, steering and vehicle, described motor pump assembly includes：Electric machine assembly；Oil pump component, the oil discharge passage of the oil pump component are provided with energy-absorbing portion；Internal sound insulation cover, the internal sound insulation cover are located at outside the oil pump component, and limit the internal layer sound insulation chamber filled with low pressure oil with the oil pump component, and the internal layer sound insulation chamber connects with the low pressure chamber of the oil pump component；Pre-tightening buffer component, the pre-tightening buffer component are folded between the upper end cover and the internal sound insulation cover, and the pre-tightening buffer component connects with the high pressure chest of the oil pump component；Safety valve, the safety valve are arranged to the pressure release when the pressure of the high pressure chest is more than scheduled pressure value.The motor pump assembly of the present invention, lightweight is horizontal high, and operating noise is small, and the pulsation fluctuation of motor pump assembly is small, and output is stable, and work efficiency is high.

Description

Motor pump assembly, steering and vehicle

Technical field

The invention belongs to technical field of vehicle manufacture, in particular to a kind of motor pump assembly, has the dynamo oil The steering of pump assembly and the vehicle with the steering.

Background technology

Motor pump assembly is widely used in the steering of vehicle, and in correlation technique, oil pump component is immersed in hydraulic oil In, the outside of oil pump component is high pressure chest, and this to need to design housing of high intensity to seal the high pressure chest, the casting to housing The sealing property for making technique and high pressure chest requires very high, and the thickness of housing is larger, does not meet light-weighted requirement.Further Ground, caused vibrating noise is larger in the course of the work for oil pump component, often through the various damping elements of setting in correlation technique Carry out insulating noise, the construction of damping element is complicated, takes larger installing space, and production cost is high, and assembly technology is complicated, deposits In room for improvement.

The content of the invention

It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention One purpose is to propose that a kind of operating noise is low, the horizontal high motor pump assembly of lightweight.

It is another object of the present invention to propose a kind of steering with above-mentioned motor pump assembly.

It is another object of the present invention to propose a kind of vehicle with above-mentioned steering.

The motor pump assembly of embodiment according to a first aspect of the present invention, including：Electric machine assembly；Oil pump component, the oil Pump group part is supported on the end cap of the electric machine assembly, the upper end cover of the oil pump component have through the upper end cover and with institute The end cap chamber of the high pressure chest connection of oil pump component is stated, and the oil discharge passage of the oil pump component is provided with energy-absorbing portion；Internal sound insulation cover, The internal sound insulation cover is located at outside the oil pump component, and the internal layer sound insulation filled with low pressure oil is limited with the oil pump component Chamber, the internal layer sound insulation chamber connect with the low pressure chamber of the oil pump component；Pre-tightening buffer component, the pre-tightening buffer component sandwiched Between the upper end cover and the internal sound insulation cover, and the pre-tightening buffer component connects with the high pressure chest of the oil pump component； Safety valve, the safety valve are arranged to the pressure release when the pressure of the high pressure chest is more than scheduled pressure value.

The motor pump assembly of embodiment according to a first aspect of the present invention, by being filled out between interior blimp and oil pump component Low pressure oil to be filled, helps to realize the lightweight of motor pump assembly, the space that motor pump assembly takes is small, and manufacturing cost is low, Operating noise is small.

The steering of embodiment according to a second aspect of the present invention, described dynamo oil any just like first aspect is set Pump assembly.

The steering is same relative to Dominant Facies possessed by prior art with above-mentioned motor pump assembly, herein not Repeat again.

The vehicle of embodiment according to a third aspect of the present invention, described steering any just like second aspect is set.

The vehicle is same relative to Dominant Facies possessed by prior art with above-mentioned steering, will not be repeated here.

Brief description of the drawings

The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment Substantially and it is readily appreciated that, wherein：

Fig. 1 is the structural representation according to the motor pump assembly of the first embodiment of the invention；

Fig. 2 is the structural representation according to the motor pump assembly of second of embodiment of the invention；

Fig. 3 is the structural representation according to the motor pump assembly of the third embodiment of the invention；

Fig. 4 is the structural representation according to the motor pump assembly of the 4th kind of embodiment of the invention；

Fig. 5 is the structural representation according to the motor pump assembly of the 5th kind of embodiment of the invention；

Fig. 6 is the structural representation according to the motor pump assembly of the 6th kind of embodiment of the invention；

Fig. 7 is the structural representation according to the motor pump assembly of the 7th kind of embodiment of the invention；

Fig. 8 is the structural representation according to the motor pump assembly of the 8th kind of embodiment of the invention；

Fig. 9 is the structural representation according to the motor pump assembly of the 9th kind of embodiment of the invention；

Figure 10 is the structural representation according to the motor pump assembly of the tenth kind of embodiment of the invention；

Figure 11 is the structural representation according to a kind of motor pump assembly of the tenth embodiment of the invention；

Figure 12 is the structural representation according to the motor pump assembly of the 12nd kind of embodiment of the invention；

Figure 13 is the structural representation according to the motor pump assembly of the 13rd kind of embodiment of the invention；

Figure 14 is the structural representation according to the motor pump assembly of the 14th kind of embodiment of the invention；

Figure 15 is the structural representation according to the motor pump assembly of the 15th kind of embodiment of the invention；

Figure 16 is the structural representation according to the motor pump assembly of the 16th kind of embodiment of the invention；

Figure 17 is the structural representation according to the motor pump assembly of the 17th kind of embodiment of the invention；

Figure 18 is the structural representation according to the motor pump assembly of the 18th kind of embodiment of the invention；

Figure 19 is the structural representation according to the motor pump assembly of the 19th kind of embodiment of the invention；

Figure 20 is the structural representation according to the motor pump assembly of the 20th kind of embodiment of the invention；

Figure 21 is that the output ripple of motor pump assembly according to embodiments of the present invention eliminates schematic diagram；

Figure 22 is the structural representation of steering according to embodiments of the present invention；

Figure 23 is the structural representation of vehicle according to embodiments of the present invention.

Embodiment

Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.

In the present invention, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint are relative Importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be with bright Show or implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two It is individual, three etc., unless otherwise specifically defined.

Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Motor pump assembly 1000 according to embodiments of the present invention is described in detail with reference first to accompanying drawing.

As shown in Fig. 1-Figure 21, motor pump assembly 1000 includes electric machine assembly 200, oil pump component 100, internal sound insulation cover 400 and pre-tightening buffer component 300.

Wherein, electric machine assembly 200 is used for the driving force for providing the operating of oil pump component 100, such as the motor of electric machine assembly 200 Axle 220 can be connected by shaft coupling 230 with the input shaft 130 of oil pump component 100, and certainly, electric machine assembly 200 is not limited to directly Oil pump component 100 is driven, can also be connected by transmission mechanisms such as gearbox or decelerators with oil pump component 100.

Oil pump component 100 is worked under the driving of electric machine assembly 200, and low pressure oil is changed into hydraulic oil output, oil pump Component 100 can be multiple structural forms, for example oil pump component 100 can be external gear rotary pump, cycloid gear pump, vane pump Or plunger pump etc., oil pump component 100 can be supported on the end cap 210 (drive end bearing bracket) of electric machine assembly 200, such as oil pump component 100 bottom end cover 120 can be supported on the end cap 210 of electric machine assembly 200.

Internal sound insulation cover 400 is located at outside oil pump component 100, and internal sound insulation cover 400 limits internal layer sound insulation with oil pump component 100 Chamber 401, internal layer sound insulation chamber 401 is interior to be filled with low pressure oil, it is preferable that internal layer sound insulation chamber 401 can be with the low pressure of oil pump component 100 Chamber 101 (hydraulic oil input cavity) connects.

That is, the periphery of oil pump component 100 is wrapped up by low pressure oil, the pressure of internal layer sound insulation chamber 401 is small, is easy to close Envelope, internal sound insulation cover 400 be not present high-pressure bottle effect, it is not necessary to be limited to the influence of intensity, there is provided light-weight design can Can property, the material thickness of internal sound insulation cover 400 can set relatively thin, for example internal sound insulation cover 400 can be made up of thin-wall metal, to reduce The space-consuming and weight of motor pump assembly 1000.Meanwhile the vibrating noise of oil pump component 100 can be by internal layer sound insulation chamber Low pressure oil in 401 absorbs and reflected by internal sound insulation cover 400, to reduce the operating noise of motor pump assembly 1000.

Pre-tightening buffer component 300 is only against between the upper end cover 110 of oil pump component 100 and internal sound insulation cover 400, it is possible to understand that , pre-tightening buffer component 300 applies downward pretightning force to the upper end cover 110 of oil pump component 100, makes oil pump component 100 Upper end cover 110, oil pump body (such as bearing, gear etc.) and bottom end cover 120 mutually compress, to keep the close of oil pump component 100 Feng Xing, and in assembling without carrying out bolt high pulling torque locking on oil pump component 100, pre-tightening buffer component 300 provides pre- Clamp force need to only ensure that oil pump component 100 is installed, and can so reduce the operating friction power of oil pump component 100, lifting oil The work efficiency of pump group part 100, the mechanical efficiency of oil pump component 100 are higher.

Meanwhile the direct contact surface product of oil pump component 100 and miscellaneous part (various housings) is smaller, with reference to figure 1- Figure 20, Oil pump component 100 only wraps up region and high-pressure oil passage to the interface area and electric machine assembly of steering gear outside shaft coupling 230 There is contact in 200 end cap 210, and be additionally provided with sealing ring at the oil inlet and outlet of oil pump component 100, and sealing ring is in pretightning force Effect is lower to be deformed, and makes to form gap oil film between the bottom end cover 120 of oil pump component 100 and the end cap 210 of electric machine assembly 200, by Small in contact area, the gap oil film and sealing ring can eliminate secondary low caused by oil pump component 100 and the vibration of end cap 210 Frequency noise, and oil pump component 100 work caused by high frequency noise can also be reflected or absorbed by sealing ring and gap oil film.

Pre-tightening buffer component 300 connects with the high pressure chest 102 of oil pump component 100.It is understood that oil pump component 100 Output ripple hydraulic oil be transmitted to pre-tightening buffer component 300 all the way, another way is transmitted to steering gear by oil discharge passage 1010, such as Pre-tightening buffer component 300 can connect with the upper end of high pressure chest 102, and oil discharge passage 1010 can be with the lower end phase of high pressure chest 102 Even.

When the pulsation of hydraulic oil is transmitted to pre-tightening buffer component 300, pre-tightening buffer component 300 can reflect the pulsation, It is the pulsation before reflection with reference to figure 21, above (a) figure, is the pulsation after reflection below (a) figure, (b) figure is that two-way pulsation synthesizes Schematic diagram afterwards, the pulsation of reflection form fluid pulsation with the pulsation for being directly transmitted to oil discharge passage 1010 and misplaced, two bursts of dislocation Fluid pulsation is cancelled out each other, so as to cut down or even eliminate the output ripple of motor pump assembly 1000, to realize dynamo oil The active noise reduction of pump assembly 1000.

Motor pump assembly 1000 according to embodiments of the present invention, by between interior blimp 400 and oil pump component 100 Low pressure oil is filled, contributes to the lightweight of lifting motor oil pump assy 1000 horizontal, and the work of motor pump assembly 1000 is made an uproar Sound is small.

In some preferred embodiments of the present invention, with reference to figure 1- Figure 20, internal sound insulation cover 400 can include top cover 410 With gusset 420, top cover 410 can be connected with gusset 420, and gusset 420 can be connected with the end cap 210 of electric machine assembly 200, top cover 410 can be tabular (including flat board and bending plate), and gusset 420 can substantially in a ring.

In some optional embodiments, with reference to figure 1- Fig. 7, Fig. 9, Figure 11, Figure 16-10, top cover 410 can pass through screw thread Fastener is connected with gusset 420, and the junction of top cover 410 and gusset 420 can be provided with sealing ring, and gusset 420 can be with motor The end cap 210 of component 200 is formed and is integrated, and thus, the shaping of internal sound insulation cover 400 is simple, and sealing station is few.

In other optional embodiments, with reference to figure 8, Figure 10, Figure 12-15, top cover 410 can be formed with gusset 420 It is integrated, gusset 420 can be connected with the end cap 210 of electric machine assembly 200 by threaded fastener, so, internal sound insulation cover 400 Shaping is simple, and sealing station is few.

The structure type of internal sound insulation cover 400 has a variety of, only enumerates two kinds of internal sound insulation cover 400 more preferable knots above Structure, can be according to suitable structure types of factor design such as the oil circuit of oil pump component 100 trends in the application process of reality Internal sound insulation cover 400.

In some preferred embodiments of the present invention, with reference to figure 1- Figure 20, motor pump assembly 1000 can also include Outer blimp 500, outer blimp 500 can be located at outside at least part of internal sound insulation cover 400, and outer blimp 500 with it is interior every Outer layer sound insulation chamber 501 is limited between sound cover 400.

Outer blimp 500 can smooth by inner surface, middle porose material be made, so, outer blimp 500 is to noise Albedo is strong, good absorbing effect.In some specific embodiments, outer blimp 500 can be working of plastics or metal Buddhist nun Imperial composite is made, and metal-nylon composite can be the composite of addition wire netting in nylon base.

Multiple material can be filled with outer layer sound insulation chamber 501, in some preferred embodiments, with reference to figure 1- Fig. 5 and Fig. 7-Figure 18, outer layer sound insulation chamber 501 are used to fill low pressure oil.Preferably, internal layer sound insulation chamber 401 can be with outer layer sound insulation chamber 501 Connection, in a specific embodiment, low pressure oil can be in outer layer sound insulation chamber 501, internal layer sound insulation chamber 401 and oil pump component Circulated between 100 low pressure chamber 101.

It should be noted that the connection of internal layer sound insulation chamber 401 and outer layer sound insulation chamber 501 includes directly connecting and in succession It is logical, for example cut-off 502 can be provided between outer layer sound insulation chamber 501 and internal layer sound insulation chamber 401, cut-off 502 be used to preventing outer layer every Low pressure oil in sound chamber 501 flows directly into internal layer sound insulation chamber 401, can lead between outer layer sound insulation chamber 501 and internal layer sound insulation chamber 401 Cross the indirect communication of motor cavity 201.

In other optional embodiments, with reference to figure 6 and Figure 19-Figure 20, outer blimp 500 is located at internal sound insulation cover Outside 400, and sound absorbing layer 510 can be filled between outer blimp 500 and internal sound insulation cover 400, sound absorbing layer 510 can be porous material Material is made, for example sound absorbing layer 510 can be acoustical cotton, according to the frequency of noise, related acoustical cotton parameter can be set, with more Exceeded noise is sopped up well.

It is understood that low pressure oil and internal sound insulation of the operating noise of oil pump component 100 in internal layer sound insulation chamber 401 Under the absorption and reflection of cover 400, small part noise can pass through internal sound insulation cover 400, and the material in now outer layer sound insulation chamber 501 is such as Acoustical cotton or low pressure oil can further absorb the noise, and outer blimp 500 can also be played to noise and absorbed and reflection Effect, so, the operating noise of motor pump assembly 1000 can greatly be cut down by multi-absorption and reflection.

Alternatively, with reference to figure 20, outer blimp 500 could be covered with outer sound absorbing layer 600 outside, further to completely cut off oil The operating noise of pump group part 100, outer sound absorbing layer 600 can be made up of porous material, for example outer sound absorbing layer 600 can be nylon Part, the inner surface of nylon part is smooth, intermediate porous, helps to reflect and absorb noise.

In some optional embodiments, the bottom end cover 120 of oil pump component 100 can be supported directly on electric machine assembly 200 End cap 210 on.

In other optional embodiments, oil pump component 100 can also suspend setting, with reference to figure 14- Figure 15 and Figure 17- Figure 20, motor pump assembly 1000 can also include buffering spacer 122, and buffering spacer 122 can be folded in oil pump component 100 Between bottom end cover 120 and the end cap 210 of electric machine assembly 200.Buffering spacer 122 is located at what oil pump component 100 contacted with end cap 210 Place, buffering and sound-absorbing can be played a part of, prevent oil pump component 100 from directly passing out operational vibration by contact site Go.

Specifically, during the pump oil of oil pump component 100, torque ripple be present, it is intrinsic to feed back to the surface of oil pump component 100 The vibration of frequency, buffering spacer 122 directly contacts with vibration, to eliminate the shock between oil pump component 100 and electric machine assembly 200 Vibration.

On the other hand, buffering spacer 122 can be isolated entirely from oil pump component 100 and the connection of periphery, play reflection The effect of noise, meanwhile, at least part of buffering spacer 122 can be made of porous materials, for example buffering spacer 122 is at least Part can have certain flexibility and loose structure, and such buffering spacer 122 can siphon away the noise of component frequency.

Alternatively, with reference to figure 14, Figure 15, Figure 17, Figure 19, Figure 20, buffering spacer 122 can be single layer structure, such as slow It can be individual layer nylon part to rush pad 122.

Preferably, multilayer can be included with reference to figure 18, buffering spacer 122, and in outside in the multilayer of buffering spacer 122 Two layers is rigid layer, and centre comprises at least one layer of flexible layer.Rigid outer layer be easy to the bottom end cover of oil pump component 100 120 and The end cap 210 of electric machine assembly 200 connects, and the support strength between oil pump component 100 and electric machine assembly 200 is bigger, and flexible layer is then Sound-absorbing and vibration damping can be played a part of.

Connection can be solidified between two layers of arbitrary neighborhood, to prevent from delaying in the course of work of motor pump assembly 1000 The dislocation that inside occurs for pad 122 is rushed, for example for rubber and the adjacent two layers of metal, vulcanization connection can be used.At one In specific embodiment, buffering spacer 122 can include the upper strata steel plate washer 122a, the middle level nylon spacer 122b that stack gradually and Lower floor steel plate washer 122c.

In some currently preferred embodiments of the present invention, with reference to figure 1- Fig. 6, the oil discharge passage 1010 of oil pump component 100 can be with It is located on the end cap 210 of electric machine assembly 200, oil discharge passage 1010 connects with the lower end of high pressure chest 102, such as oil discharge passage 1010 It can be connected by lower channel 121 with the lower end of high pressure chest 102, lower channel 121 runs through bottom end cover 120.

With reference to figure 1- Fig. 6, end cap chamber 111 can be provided with the upper end cover 110 of oil pump component 100, end cap chamber 111 can pass through End cap 110 is put on, and end cap chamber 111 connects with the upper end of high pressure chest 102, pre-tightening buffer component 300 can match somebody with somebody with end cap chamber 111 Close to completely cut off high pressure chest 102 and internal layer sound insulation chamber 401.

It is understood that the lower surface of pre-tightening buffer component 300 is connected by the upper end of end cap chamber 111 and high pressure chest 102 Logical, pulsation hydraulic oil passes downwardly through oil discharge passage 1010 and exported all the way, and another way is transmitted to pre-tightening buffer component 300 upwards, and Reflected by pre-tightening buffer component 300, with reference to figure 21, the pulsation pulsed with being directly transmitted to oil discharge passage 1010 of reflection forms fluid Pulsation dislocation, the fluid pulsation of two bursts of dislocation is cancelled out each other, so as to eliminate the output ripple of motor pump assembly 1000, with Realize the active noise reduction of motor pump assembly 1000.

Preferably, end cap chamber 111 can be structured as shoulder hole to form cascaded surface, pre-tightening buffer component 300 and end cap chamber 111 coordinate to completely cut off high pressure chest 102 and internal layer sound insulation chamber 401, and pre-tightening buffer component 300 only supports under the pressure effect of hydraulic oil The top cover 410 of internal sound insulation cover 400, pre-tightening buffer component 300 is by the reaction force of internal sound insulation cover 400 to compress oil pump component 100, and the cascaded surface of end cap chamber 111 by the downward oil pressure of hydraulic oil with compress upper end cover 110, oil pump body (such as bearing, Gear etc.) and bottom end cover 120.

With reference to figure 1- Fig. 6, top cover 410 can have a groove 411 unlimited downwards, and pre-tightening buffer component 300 only supports can be with The bottom wall of groove 411, in assembling, groove 411 can play a part of positioning, moreover it is possible to prevent pre-tightening buffer component 300 from working During bias.

Specifically, pre-tightening buffer component 300 can include piston 310 and elastic component 320, and piston 310 is matched somebody with somebody with end cap chamber 111 Close to completely cut off high pressure chest 102 and internal layer sound insulation chamber 401, piston packing is provided between piston 310 and the perisporium of end cap chamber 111 312, the pre-tightening buffer component 300 that piston 310 and elastic component 320 form can be folded in the cascaded surface of end cap chamber 111 with it is interior every Between sound cover 400.Piston 310 can be made up of metal-nylon composite or metal material, and elastic component 320 can be spring.

With reference to figure 1, elastic component 320 elastic can be folded between the cascaded surface of piston 310 and end cap chamber 111, piston 310 Internal sound insulation cover 400 only can be supported.The elastic force of elastic component 320 can apply downward pretension to the upper end cover 110 of oil pump component 100 Power, the upper end cover 110, oil pump body (such as bearing, gear etc.) and bottom end cover 120 of oil pump component 100 is set mutually to compress, to protect Hold the sealing of oil pump component 100.

The end face towards internal sound insulation cover 400 of piston 310 has lug boss 311, and lug boss 311 only supports internal sound insulation cover 400, Specifically, lug boss 311 can only support the bottom wall of the groove 411 on lid 410, can so reduce piston 310 and internal sound insulation The contact area of cover 400, the secondary noise between piston 310 and internal sound insulation cover 400 is reduced, and piston 310 will not be because making for a long time Nature cold welding is formed with and with internal sound insulation cover 400, lug boss 311 can be multiple, and multiple lug bosses 311 are evenly distributed on piston 310 towards on the end face of internal sound insulation cover 400 so that the uniform force of piston 310, such as multiple lug bosses 311 can be located at On same annulus.

Certainly, the position of elastic component 320 and piston 310 can also be exchanged, and with reference to figure 2- Fig. 4 and Fig. 6, elastic component 320 can It is folded in elasticity between piston 310 and internal sound insulation cover 400, one end of piston 310 can only support the cascaded surface of end cap chamber 111.

The elastic force of elastic component 320 can apply downward pretension by piston 310 to the upper end cover 110 of oil pump component 100 Power, the upper end cover 110, oil pump body (such as bearing, gear etc.) and bottom end cover 120 of oil pump component 100 is set mutually to compress, to protect The sealing of oil pump component 100 is held, and one end of elastic component 320 can only support the bottom wall of groove 411, groove 411 is to elastic component 320 go back the effect of limited location, can prevent elastic component 320 from biasing.

There can be lug boss 311 on the end face towards cascaded surface of piston 310, lug boss 311 only supports cascaded surface, so The contact area of piston 310 and cascaded surface can be reduced, reduce the secondary noise between piston 310 and upper end cover 110, and piston 310 will not form nature cold welding because long-term use of and with cascaded surface, and lug boss 311 can be multiple, and multiple lug bosses 311 are uniform It is distributed on the end face of remote internal sound insulation cover 400 of piston 310, so that the uniform force of piston 310, such as multiple lug bosses 311 can be located on same annulus, and lug boss 311 can have trapezoid cross section.

Piston 310 can be increased suddenly by the flexible elimination part pulsation of elastic component 320, such as oil pressure, piston 310 It can be moved upwards with compression elastic piece 320 in the presence of oil pressure.The piston packing 312 and piston compressed by piston 310 Gap oil film between 310 and the perisporium of end cap chamber 111 can also eliminate a part of pulsation, so as to cut down oil pump component 100 Output ripple so that the oil liquid pressure of output more even.

Further, safety valve can also be included with reference to figure 3 and Fig. 4, motor pump assembly 1000, safety valve can be set Into the pressure release when the pressure of high pressure chest 102 is more than scheduled pressure value.Specifically, safety valve can include being located at end cap chamber 111 Relief hole 112 on perisporium, relief hole 112 connects end cap chamber 111 and internal layer sound insulation chamber 401, little in the pressure of high pressure chest 102 Piston 310 blocks relief hole 112, and the piston 310 when the pressure of high pressure chest 102 is more than scheduled pressure value when scheduled pressure value It is moved to the position for opening relief hole 112.

It is understood that at nominal conditions, the pressure of high pressure chest 102 is not more than scheduled pressure value, and piston 310 is basic Relief hole 112 is blocked, relief hole 112 is by the gap oil film seal between the perisporium of piston 310 and end cap chamber 111, in oil pump group During the output pressure exception of part 100, the pressure of high pressure chest 102 is more than scheduled pressure value, and oil pressure overcomes bullet to the pressure of piston 310 Property part 320 elastic force piston 310 is moved upwards, piston 310 be moved to open relief hole 112 position when, relief hole 112 with Connected between high pressure chest 102, it is possible to achieve pressure release, now, piston 310 are used as valve element, play regulation oil pump component 100 and export stream Amount and pressure effect.

In other optional embodiments of the present invention, with reference to figure 14- Figure 20, the oil discharge passage of oil pump component 100 1010 at least a portion can be located in internal sound insulation cover 400, for example the upper end of oil discharge passage 1010 and high pressure chest 102 is (remote One end of electric machine assembly 200) connection.

In the embodiment that oil discharge passage 1010 connects with the upper end of high pressure chest 102, with reference to figure 17- Figure 20, oil pump component Buffering spacer 122 can be folded between 100 bottom end cover 120 and the end cap 210 of electric machine assembly 200, buffering spacer 122 is located at The place that oil pump component 100 contacts with end cap 210, buffering and sound-absorbing can be played a part of, prevent oil pump component 100 by connecing Contact portion directly passes operational vibration.The structure of buffering spacer 122 can be the single layer structure shown in Figure 17 and Figure 20, It can be the sandwich construction shown in Figure 18.

In some optional embodiments, with reference to figure 14- Figure 15, internal sound insulation cover 400 can be provided with oil discharge passage 1010, go out Oily passage 1010 connects with sound insulation cover chamber 402, for example oil discharge passage 1010 can be communicated to the bottom wall of sound insulation cover chamber 402 always, Piston 310 is integrally formed with upper end cover 110, the piston hole 314 through piston 310 is provided with piston 310, piston hole 314 is always Through upper end cover 110, piston hole 314 is connected with high pressure chest 102 and sound insulation cover chamber 402.So, oil pump component 100 pumps out The flow direction of hydraulic oil is：High pressure chest 102- piston hole 314- oil discharge passages 1010.

Preferably, piston 310 towards having lug boss 311 on the end face of sound insulation cover chamber 402, lug boss 311 only support every The bottom wall of sound cover chamber 402.

It is understood that by setting lug boss 311 to reduce between the end face of piston 310 and internal sound insulation cover 400 Contact area, reduce the secondary noise between piston 310 and internal sound insulation cover 400, and piston 310 will not because long-term use of and with Internal sound insulation cover 400 forms nature cold welding, and lug boss 311 can be multiple, and multiple lug bosses 311 are evenly distributed on piston 310 Towards on the end face of internal sound insulation cover 400 so that the uniform force of piston 310, such as multiple lug bosses 311 can be located at it is same On annulus, lug boss 311 can have trapezoid cross section.

In other optional embodiments, with reference to figure 16- Figure 20, the upper end cover 110 of oil pump component 100 has end cap chamber 111, end cap chamber 111 runs through upper end cover 110, and end cap chamber 111 connects with the high pressure chest 102 of oil pump component 100, internal sound insulation cover 400 are provided with sound insulation cover chamber 402, and pre-tightening buffer component 300 includes piston 310 and elastic component 320, the epimere of piston 310 with every Sound cover chamber 402 coordinates, and hypomere and the end cap chamber 111 of piston 310 coordinate, and the epimere of piston 310 and the perisporium of sound insulation cover chamber 402 Between be provided with piston packing 312, piston packing 312 is provided between the hypomere of piston 310 and the perisporium of end cap chamber 111, with Completely cut off the high pressure chest 102 and internal layer sound insulation chamber 401 of oil pump component 100, elastic component 320 is used to provide pretightning force.Piston 310 can be with It is made up of metal-nylon composite or metal material.

It is understood that piston 310 can be pressed by the flexible elimination part pulsation of elastic component 320 by piston 310 Gap oil film and piston 310 and sound insulation cover chamber between the perisporium of tight piston packing 312, piston 310 and end cap chamber 111 Gap oil film between 402 perisporium can also eliminate a part of pulsation, so as to cut down the output ripple of oil pump component 100, make The oil liquid pressure that must be exported more even.

Preferably, end cap chamber 111 it is so structured that shoulder hole to form cascaded surface, elastic component 320 can elasticity be folded in Between piston 310 and cascaded surface, piston 310 stops the bottom wall to sound insulation cover chamber 402, and the diameter of the epimere of piston 310 is less than piston The diameter of 310 hypomere, the step surface between the epimere and the hypomere of piston 310 of piston 310 be spaced apart with internal sound insulation cover 400 and In internal layer sound insulation chamber 401, to prevent piston 310 from being hit with internal sound insulation cover 400.

Piston 310 the hydraulic oil that high pressure chest 102 exports pressure and elastic component 320 elastic force collective effect under Only supporting internal sound insulation cover 400, the reaction force of internal sound insulation cover 400 makes elastic component 320 compress oil pump component 100, and end cap chamber 111 By the downward oil pressure of hydraulic oil to compress upper end cover 110, upper end cover 110, the oil pump body of oil pump component 100 (compare cascaded surface Such as bearing, gear) and bottom end cover 120 mutually compress, to keep the sealing of oil pump component 100.

In the other optional embodiment of the present invention, with reference to figure 7- Figure 13, motor pump assembly 1000 has fuel-displaced Passage 1010 and fuel-displaced branch road 1020, wherein oil discharge passage 1010 connect with the lower end of high pressure chest 102, such as oil discharge passage 1010 It can be connected by the lower channel 121 through bottom end cover 120 with the lower end of high pressure chest 102, fuel-displaced branch road 1020 and oil discharge passage 1010 are connected, and hydraulic oil is directed to one end of the remote upper end cover 110 of pre-tightening buffer component 300, and hydraulic oil passes downwardly through Oil discharge passage 1010 exports, and at fuel-displaced branch road 1020 branch to be transmitted to pre-tightening buffer component 300, pre-tightening buffer component 300 compress upper end cover 110 in the presence of oil pressure, to provide part pretightning force.

Specifically, sound insulation cover chamber 402 can be provided with internal sound insulation cover 400, sound insulation cover chamber 402 can be located at internal sound insulation cover On 400 top cover 410, pre-tightening buffer component 300 can include piston 310 and elastic component 320, piston 310 and sound insulation cover chamber 402 Coordinate, and piston 310 stops the upper end cover 110 to oil pump component 100, can be pressed from both sides between piston 310 and the perisporium of sound insulation cover chamber 402 Provided with piston packing 312.The elasticity of elastic component 320 is folded between the bottom wall of blimp chamber 402 and piston 310, elastic component 320 The pretightning force of upper end cover 110 is compressed for providing, elastic component 320 can be spring, sound insulation cover chamber 402 and oil pump component 100 High pressure chest 102 connects, and piston 310 compresses upper end cover 110 in the presence of oil pressure, the elastic force of elastic component 320 and from fuel-displaced branch The oil pressure collective effect for the hydraulic oil that road 1020 is drawn makes upper end cover 110, the oil pump body of oil pump component 100 in upper end cover 110 (such as bearing, gear etc.) and bottom end cover 120 mutually compress, to keep the sealing of oil pump component 100.

Oil discharge passage 1010 can be located on the end cap 210 of electric machine assembly 200, and oil discharge passage 1010 can be with high pressure chest 102 lower end connection, for example oil discharge passage 1010 can be by under the lower channel 121 of bottom end cover 120 and high pressure chest 102 End is connected.Fuel-displaced branch road 1020 connects with oil discharge passage 1010, and fuel-displaced branch road 1020 connects with sound insulation cover chamber 402, specifically, Fuel-displaced branch road 1020 can extend through the bottom wall of sound insulation cover chamber 402, with reference to figure 7- Figure 13, fuel-displaced branch road 1020 can be located in every On sound cover 400.

Pulsation hydraulic oil is directly exported by oil discharge passage 1010 all the way, and another way is transmitted to work by fuel-displaced branch road 1020 Plug 310, and retrodirective reflection, with reference to figure 21, the pulsation pulsed with being directly transmitted to oil discharge passage 1010 of reflection forms fluid pulsation Dislocation, the fluid pulsation of two bursts of dislocation is cancelled out each other, so as to eliminate the output ripple of motor pump assembly 1000, to realize The active noise reduction of motor pump assembly 1000.

Piston 310 can be increased suddenly by the flexible elimination part pulsation of elastic component 320, such as oil pressure, piston 310 It can be moved downward in the presence of oil pressure, the piston packing 312 and piston 310 compressed by piston 310 and end cap chamber 111 Gap oil film between perisporium can also eliminate a part of pulsation, so as to cut down the output ripple of oil pump component 100 so that output Oil liquid pressure more even.

The structure type of piston 310 has a variety of, and with reference to figure 7, piston 310 can be split type, piston with upper end cover 110 310 can be made up of metal-nylon composite or metal material.

Piston 310 can include connected piston section 316 and compress section 317, piston section 316 and compress section 317 can be with one Body formed, piston section 317 coordinates with sound insulation cover chamber 402, can be folded between the perisporium of piston section 317 and sound insulation cover chamber 402 Piston packing 312, compress section 317 and only support upper end cover 110, and the cross-sectional area for compressing section 317 can be more than piston section 317 Cross-sectional area, so compressing section 317 can be by the elastic force for the elastic component 320 that piston section 317 is born and the pressure of fluid more To be balancedly applied to the regional of upper end cover 110, the installation better tightness of oil pump component 100, it is preferable that compress section 317 projection on upper end cover 110 can be completely superposed with upper end cover 110.

Specifically, compress section 317 compresses boss 318 towards can have on the end face of upper end cover 110, compress boss 318 only support upper end cover 110.The contact area of piston 310 and upper end cover 110 can so be reduced, reduce piston 310 and upper end cover Secondary noise between 110, and piston 310 will not form nature cold welding because long-term use of and with upper end cover 110, compress boss 318 can be multiple, and multiple boss 318 that compress are spaced from each other so that the uniform force of piston 310, such as it is multiple compress it is convex Platform 318 can be located on multiple donuts, and trapezoid cross section can be had by compressing boss 318.

With reference to figure 8- Figure 13, the upper end cover 110 of piston 310 and oil pump component 100, which is formed, to be integrated, and piston 310 can be with It is made up of metal-nylon composite or metal material.So, the structure of motor pump assembly 1000 and assembly process are simpler.

Certainly, pre-tightening buffer component 300 can have multiple structural forms, the structure shape of above-mentioned piston 310 and elastic component 320 Formula is only a kind of optional embodiment, and in other optional embodiments, pre-tightening buffer component 300 can be hydraulic valve, Upper end cover 110 and/or internal sound insulation cover 400 form the valve seat of hydraulic valve, have valve pocket on valve seat, valve element is provided with valve pocket.

In an optional embodiment of the present invention, with reference to figure 5, motor pump assembly 1000 include electric machine assembly 200, Oil pump component 100, internal sound insulation cover 400 and pre-tightening buffer component 300.

Wherein, oil pump component 100 is supported on the end cap 210 of electric machine assembly 200, and the upper end cover 110 of oil pump component 100 has There is end cap chamber 111, end cap chamber 111 runs through upper end cover 110, and end cap chamber 111 connects with the high pressure chest 102 of oil pump component 100, interior Blimp 400 is located at outside oil pump component 100, and internal sound insulation cover 400 limits internal layer sound insulation chamber 401 with oil pump component 100, interior Layer sound insulation chamber 401 is filled with low pressure oil, and internal layer sound insulation chamber 401 connects with the low pressure chamber 101 of oil pump component 100.

Pre-tightening buffer component 300 includes valve element 330 and elastic component 320, the elasticity of elastic component 320 be only against valve element 330 with it is interior Between blimp 400, so that valve element 330 blocks end cap chamber 111, elastic component 320 can be spring.

Valve element 330 is under the elastic force effect of elastic component 320, closure end cap chamber 111, makes the end cap chamber 111 and low pressure of high pressure Internal layer sound insulation chamber 401 separate, and elastic component 320 also provides the pretightning force of oil pump component 100, and valve element 330 is to oil pump component 100 The pressure that applies of upper end cover 110, make the upper end cover 110 of oil pump component 100, oil pump body (such as bearing, gear etc.) and under End cap 120 mutually compresses, to keep the sealing of oil pump component 100, and without carrying out bolt high pulling torque on oil pump component 100 Locking, the pretightning force that pre-tightening buffer component 300 provides need to only ensure that oil pump component 100 is installed, and can so reduce oil The operating friction power of pump group part 100, the work efficiency of lifting oil pump component 100, the mechanical efficiency of oil pump component 100 are high.

Valve element 330 can be pulsed by a flexible elimination part for elastic component 320, and the pulsation that oil pump component 100 exports Hydraulic oil is divided into two-way, passes downwardly through oil discharge passage 1010 all the way and exports, and another way is transmitted to valve element 330 upwards, and by valve element 330 reflections, with reference to figure 21, the pulsation pulsed with being directly transmitted to oil discharge passage 1010 of reflection forms fluid pulsation and misplaced, two strands The fluid pulsation of dislocation is cancelled out each other, so as to eliminate the output ripple of motor pump assembly 1000, to realize motor pump The active noise reduction of assembly 1000, and the oil liquid pressure more even that motor pump assembly 1000 exports.

In this embodiment, valve element 330 has blocked the upper end of high pressure chest 102, and oil discharge passage 1010 can be by under The lower channel 121 of end cap 120 connects with high pressure chest 102, and so as to export hydraulic oil, the oil circuit of this structure type has entered above Detailed description is gone, will not be repeated here.

Specifically, valve element 330 can include seal section 331, guide section 332 and spacing section 333 being sequentially connected, internal sound insulation Cover 400 has the end cap chamber 111 opened wide towards upper end cover 110, and the internal perisporium of guide section 332 and end cap chamber 111 coordinates, guide section Gap oil film between 332 and the internal perisporium of end cap chamber 111 can also eliminate a part of pulsation, and elastic component 320 is set in spacing Outside section 333, and elastic component 320 is only against between the roof of end cap chamber 111 and the end face of guide section 332, and spacing section 333 can rise To guiding and spacing effect.

With reference to figure 5, valve element 330 can have conical seal (contact) face, and conical seal (contact) face can be located on seal section 331, change speech It, valve element 330 can be cone valve, and upper end cover 110 can have conical seal (contact) face corresponding with the conical seal (contact) face of valve element 330. So, valve element 330 is more preferable to the plugging effect of end cap chamber 111.

In some preferred embodiments of the present invention, energy-absorbing can be provided with the oil discharge passage 1010 of oil pump component 100 Portion 1030, energy-absorbing portion 1030 can be various structures, for example energy-absorbing portion 1030 can be energy-storing chamber 1032 or air accumulator or damping Hole.

In a specific embodiment, with reference to figure 4, energy-absorbing portion 1030 can be energy-storing chamber 1032, and energy-storing chamber 1032 can To be located on oil discharge passage 1010, the sectional area of energy-storing chamber 1032 can be more than the section of the other parts of oil discharge passage 1010 Product, energy-storing chamber 1032 can play a part of eliminating fluid pulsation and carry out fluid noise reduction.

Specifically, energy-storing chamber 1032 can be located at the bending place of oil discharge passage 1010, for example in Fig. 4, energy-storing chamber 1032 can Think cylinder, the lower end of the perisporium of energy-storing chamber 1032 can connect with the lower end of the high pressure chest 102 of oil pump component 100, energy storage The middle upper end of the perisporium of chamber 1032 can be communicated to the oil-out of motor pump assembly 1000 always.So, shoe cream room is to pulsation Buffering effect and more preferable to the eradicating efficacy of noise.

In another specific embodiment, with reference to figure 10- Figure 12, energy-storing chamber 1032 can be located at sound insulation cover chamber 402 with On high-pressure oil passage between high pressure chest 102, that is to say, that energy-storing chamber 1032 can be located on fuel-displaced branch road 1020, energy-storing chamber 1032 cross-sectional area can be more than the cross-sectional area of the other parts of fuel-displaced branch road 1020.

Specifically, energy-storing chamber 1032 can have circular cross section, and energy-storing chamber 1032 can be located at the gusset 420 of blimp Interior, with reference to figure 11, energy-storing chamber 1032 can extend to top cover 410 from one end of the remote top cover 410 of gusset 420, so The volume of energy-storing chamber 1032 is bigger, and energy-storing chamber 1032 can play a part of eliminating fluid pulsation and carry out fluid noise reduction, pass through The size of design energy-storing chamber 1032 can realize the elimination to various frequency noises.

In another specific embodiment, with reference to figure 12 and Figure 15, the high-pressure oil passage of oil pump component 100 is provided with energy storage Chamber 1032, at least one end of energy-storing chamber 1032 are connected with hush pipe 1033, and hush pipe 1033 can be made up of metal material.

Preferably, the both ends of energy-storing chamber 1032 are equipped with hush pipe 1033, and hush pipe 1033 is it is so structured that open at one end Tubular, the end cap 210 of the open end insertion electric machine assembly 200 of one of hush pipe 1033, and the hush pipe 1033 is spacious Beginning connects with oil discharge passage 1010, the open end insertion internal sound insulation cover 400 of another hush pipe 1033, and the sound cylinder is unlimited End connects with fuel-displaced branch road 1020.

Hush pipe 1033 is provided with through hole 1034, specifically, multiple through holes 1034 can be provided with hush pipe 1033, multiple Through hole 1034 is spaced to be opened on the perisporium of hush pipe 1033, wherein two holes on same hush pipe 1033 at least be present The different through hole 1034 in footpath, and the two aperture difference through holes 1034 can be along the axially spaced of hush pipe 1033.

It is understood that the cooperation of hush pipe 1033 and energy-storing chamber 1032 can play the pulsation of elimination fluid and fluid is made an uproar The effect of sound, the through hole 1034 on hush pipe 1033 to form multiple bores between hush pipe 1033 and energy-storing chamber 1032 not With divide oil circuit, to play a part of flow-disturbing, and the different through hole 1034 in aperture can eliminate the noise of different frequency.

With reference to figure 12, high-pressure oil passage can include oil discharge passage 1010 and fuel-displaced branch road 1020, oil discharge passage 1010 and height Pressure chamber 102 is connected, for example oil discharge passage 1010 can be located on the end cap 210 of electric machine assembly 200, and oil discharge passage 1010 passes through Lower channel 121 through bottom end cover 120 is connected with the lower end of high pressure chest 102, and fuel-displaced branch road 1020 connects with oil discharge passage 1010, Fuel-displaced branch road 1020 connects with sound insulation cover chamber 402, and specifically, fuel-displaced branch road 1020 can extend through the bottom wall of sound insulation cover chamber 402, Energy-storing chamber 1032 can be located on fuel-displaced branch road 1020, and in this embodiment, energy-storing chamber 1032 and hush pipe 1033 are fuel-displaced branch The part on road 1020.

With reference to figure 15, high-pressure oil passage includes oil discharge passage 1010, and oil discharge passage 1010 connects with sound insulation cover chamber 402, piston The piston hole 314 through piston 310 is provided with 310, piston hole 314 is connected with high pressure chest 102 and sound insulation cover chamber 402, energy storage Chamber 1032 is located on oil discharge passage 1010.In this embodiment, energy-storing chamber 1032 and hush pipe 1033 are used as oil discharge passage 1010 A part, and in this embodiment, because hydraulic oil is not exported by bottom end cover 120, the bottom end cover 120 of oil pump component 100 The buffering spacer 122 of above-described embodiment description can be folded between the end cap 210 of electric machine assembly 200, so that oil pump component 100, which suspend, is set.

In another specific embodiment, energy-absorbing portion 1030 can include flexible pipe 1031, with reference to figure 13 and Figure 14, flexible pipe 1031 can be located on the high-pressure oil passage of oil pump component 100, and alternatively, flexible pipe 1031 is located at sound insulation cover chamber 402 and high pressure chest 102 Between high-pressure oil passage on.

Preferably, flexible pipe 1031 can pass through the first hard tube 1021 and the second hard tube 1022 and other oil communications, flexible pipe 1031 one end is set in outside the first hard tube 1021, and the other end of flexible pipe 1031 is set in outside the second hard tube 1022, flexible pipe 1031 It can be immersed in low pressure oil, for example in outer layer sound insulation chamber 501 in the embodiment of filling low pressure oil, flexible pipe 1031 can be located at In outer layer sound insulation chamber 501.Alternatively, the first hard tube 1021 and the second hard tube 1022 can be metal tube, and flexible pipe 1031 can be Rubber tube.When pulse is produced in high-pressure oil passage, flexible pipe 1031 can occur elastic deformation and increase the diameter of itself, so as to eliminate Pulsation, reduce noise.

Further, spiral can be provided with least one internal perisporium in the first hard tube 1021 and the second hard tube 1022 Groove 1023, when fluid is by helicla flute 1023, the spiral flow-disturbing effect of helicla flute 1023 can further reduce pulsation.

With reference to figure 13, high-pressure oil passage can include oil discharge passage 1010 and fuel-displaced branch road 1020, oil discharge passage 1010 and height Pressure chamber 102 is connected, for example oil discharge passage 1010 can be located on the end cap 210 of electric machine assembly 200, and oil discharge passage 1010 passes through Lower channel 121 through bottom end cover 120 is connected with the lower end of high pressure chest 102, and fuel-displaced branch road 1020 connects with oil discharge passage 1010, Fuel-displaced branch road 1020 connects with sound insulation cover chamber 402, and specifically, fuel-displaced branch road 1020 can extend through the bottom wall of sound insulation cover chamber 402, And flexible pipe 1031 can be located on fuel-displaced branch road 1020, fuel-displaced branch road 1020 includes the first hard tube 1021 and the second hard tube 1022, First hard tube 1021 connects with oil discharge passage 1010, and the second hard tube 1022 connects with sound insulation cover chamber 402, the first hard tube 1021 and Two hard tubes 1022 are connected by flexible pipe 1031.In this embodiment, flexible pipe 1031 is a part for fuel-displaced branch road 1020.

With reference to figure 14, high-pressure oil passage includes oil discharge passage 1010, and oil discharge passage 1010 connects with sound insulation cover chamber 402, piston The piston hole 314 through piston 310 is provided with 310, piston hole 314 is connected with high pressure chest 102 and sound insulation cover chamber 402, flexible pipe 1031 are located on oil discharge passage 1010, and oil discharge passage 1010 also includes the first hard tube 1021 and the second hard tube 1022, flexible pipe 1031 It is connected between the first hard tube 1021 and the second hard tube 1022.In this embodiment, flexible pipe 1031 is the one of oil discharge passage 1010 Part, and in this embodiment, because hydraulic oil is not exported by bottom end cover 120, bottom end cover 120 and the electricity of oil pump component 100 The buffering spacer 122 of above-described embodiment description can be folded between the end cap 210 of thermomechanical components 200, so that oil pump component 100 is outstanding Float is put.

In some preferred embodiments of the present invention, with reference to figure 1- Figure 20, electric machine assembly 200 can be liquid-cooled, and The motor cavity 201 of electric machine assembly 200 connects with the low pressure chamber 101 of oil pump component 100, passes through the oil suction negative pressure of oil pump component 100 Effect, can drive fluid to flow through motor cavity 201, so as in the course of work of motor pump assembly 1000, realize to motor The liquid-cooling heat radiation of component 200.

In the embodiment that outer layer sound insulation chamber 501 is filled with low pressure oil and is connected with internal layer sound insulation chamber 401, motor pump is total Oil inlet into 1000 can directly connect with outer layer sound insulation chamber 501, in order to guide the flow direction of fluid, in some optional implementations In example, with reference to figure 1, Fig. 3-Fig. 5 and Figure 11, cut-off 502 can be provided between outer layer sound insulation chamber 501 and internal layer sound insulation chamber 401, this The flow direction of sample fluid is：Outer layer sound insulation chamber 501- motor cavity 201- low pressure chamber 101- high pressure chest 102- oil discharge passages 1010- is turned to.

Certainly, the oil inlet of motor pump assembly 1000 can also be located at other positions, such as motor pump assembly 1000 Oil inlet can be located at the bottom of electric-controlled box 260 of electric machine assembly 200.

It is understood that the heating of the electric control part of electric machine assembly 200 is more serious, fluid can pass through electric-controlled box 260 The oil inlet of bottom enters motor cavity 201, and fluid cools down the electric control part of electric machine assembly 200 in advance, passes through oil pump component 100 Oil suction suction function, fluid flow to it is automatically controlled radiating oil reservoir 263, to motor triple line 261 and it is automatically controlled control and DC-AC turn Change plate 262 to be cooled down, and cooling oil duct can be designed with around stator 250, the fluid in cooling oil path can cool down stator 250, fluid reaches the inlet port of oil pump component 100 by cooling oil path again.

Preferably, the rotor 240 of electric machine assembly 200 can be immersed in low pressure oil, and such fluid can play sluggish turn The effects that son 240 rotates, with buffer rotor 240 it is anxious accelerate or it is anxious slow down and the problem of inertia modulus are excessive, so as to prevent electricity Thermomechanical components 200 throw the impact to turning to oil circuit when carrying, and more preferably, steering wheel is not easy to shake the feel of steering, and rotor 240 can be right Upper and lower automatically controlled radiating oil reservoir 263 and motor low pressure Pulvis Emolliens deep fat layer 264 forms annular agitation, strengthens electric control part and stator 250 cooling effect.

Further, in order to prevent electric machine assembly 200 from throwing the impact carried to turning to oil circuit, the feel turned to is influenceed, can be with Increase energy storing structure in oil circuit, the rotating speed of electric machine assembly 200 can also be controlled by automatically controlled aspect, such as at a high speed A constant acceleration algorithm is carried out to reduce rotating speed to the rotating speed of electric machine assembly 200 in the case of reduction, to be dropped rapidly in rotating speed In low process, make electric machine assembly 200 and oil pump component 100 is loaded with a process slowly reduced.

The motor pump assembly 1000 of the embodiment of the present invention can be used for steering, the motor shaft 220 of electric machine assembly 200 It is connected with the input shaft 130 of oil pump component 100, the rotating speed n of motor shaft 220 is controlled according at least to the corner w of speed v and steering wheel System, the rotating speed n of motor shaft 220 may decide that oil pressure and flow that oil pump component 100 exports, so as to control turning for wheel Angle.

Motor pump assembly 1000 is arranged in v=0km/h, and during w≤w1, and the rotating speed n of controlled motor axle 220 meets： n3≤n≤n4.Preferably, 5 ° of w1 ＜, 950rpm≤n3≤1050rpm, 1150rpm≤n4≤1250rpm.It is specific at one In embodiment, w1=0 °, n1=1000rpm, n2=1200rpm.

In other words, vehicle parking idling operation, steering wheel do not work substantially, and speed zero, the CAN of electric machine assembly 200 leads to Interrogate line drives oil pump component 100 to be run with low idling operation without input signal, electric machine assembly 200, and the rotating speed of motor shaft 220 is most It is low, ensure the cooling requirements of electric machine assembly 200, the noise of motor pump assembly 1000 is minimum.

Motor pump assembly 1000 is arranged in v ＞ 0km/h, and during w≤w1, and the rotating speed n of controlled motor axle 220 meets： n5≤n≤n6.Preferably, 5 ° of w1 ＜, 1450rpm≤n5≤1550rpm, 1550rpm≤n6≤1650rpm are specific at one Example in, n5=1500rpm, n6=1600rpm.

In other words, vehicle launch is run, and steering wheel does not rotate or minor rotation, wheel do not turn to, and DC current is small, Electric machine assembly 200 drives oil pump component 100, and idling work, the rotating speed of motor shaft 220 somewhat improves, to ensure that full-vehicle steering needs Ask, simultaneously as having produced road noise in vehicle running, the noise that rotating speed improves is no more than or overlapping vehicle noise.

Motor pump assembly 1000 is arranged in v=0km/h, and during 5 ° of w ＞, the rotating speed n of controlled motor axle 220 and direction The corner w positive correlations of disk.

In other words, in vehicle pivot stud, the corner of steering wheel is bigger, and the rotating speed of motor shaft 220 is bigger, motor pump The pressure and flow for the hydraulic oil that assembly 1000 exports are also bigger, so that wheel realizes bigger corner, and now motor pump The operating noise of assembly 1000 is made an uproar slightly larger than the road of tire, can remind passerby's Vehicular turn with less noise.

Motor pump assembly 1000 is arranged in 0 ＜ v ＜ v1, and the rotating speed n and speed v of motor shaft 220 are negatively correlated, motor The rotating speed n and steering wheel of axle 220 corner w positive correlations.

In other words, when being run at a low speed in vehicle, speed is lower or the corner of steering wheel is bigger, and motor shaft 220 turns Speed is bigger, and the pressure and flow for the hydraulic oil that motor pump assembly 1000 exports are also bigger, so that wheel realizes bigger corner, And now motor pump assembly 1000 export hydraulic oil pressure and flow substantially pivot stud when half, motor pump The operating noise of assembly 1000 is made an uproar less than the road of tire, so as to realize Jing Yin steering.

Motor pump assembly 1000 is arranged in v >=v1, and the rotating speed n of controlled motor axle 220 meets：n≤n2.

It is understood that in v >=v1, high vehicle speeds, such as v1 >=60km/h, the general Emergency avoidance that carries out are arranged Apply, now need to be controlled the flow of steering, prevent vehicle under high speed conditions, promptly beating direction causes to overturn, now The rotating speed n for limiting motor shaft 220 is not more than value n2, i.e. controlled motor component 200 is run in middle low speed.Preferably, 2350rpm≤ n2≤2450rpm。

Further, motor pump assembly 1000 can be arranged in v >=v1, and during w ＞ w1, controlled motor axle 220 Rotating speed n meets：n1≤n≤n2.That is, in high vehicle speeds, even if driver hits steering wheel, motor shaft 220 Rotating speed n also control between n1 and n2, wheel is also only finely adjusted to realize Emergency avoidance.Preferably, v1 >=60km/h, 1550rpm≤n1≤1650rpm, 2350rpm≤n2≤2450rpm, in a specific embodiment, v1=80km/h, n1 =1600rpm, n2=2400rpm.

Preferably, the acceleration a of motor shaft 220 meets：a≤a1.That is, the maximum acceleration of controlled motor axle 220 Degree, prevent electric machine assembly 200 from throwing to carry.

It should be noted that in the case of not conflicting, those skilled in the art can by the present invention not It is mutually combined with the feature in embodiment, such as the internal sound insulation cover 400 of various structure types, the pre-tightening buffer of various structure types Component 300, the energy-absorbing portion 1030 of various structure types, various structure types oil circuit trend etc., can be mutually combined.

Motor pump assembly 1000 according to embodiments of the present invention, the lightweight of motor pump assembly 1000 is horizontal high, accounts for Space is small, and manufacturing cost is low, and the direct contact surface product of oil pump component 100 and miscellaneous part is small, can be greatly decreased secondary Noise source, the soundproof effect of motor pump assembly 1000 is good, and the method offset of being pulsed by fluid, can reduce motor pump The pulsation fluctuation of assembly 1000, realize the active noise reduction of motor pump assembly 1000, while the operating friction power of oil pump component 100 It is small so that the work efficiency of motor pump assembly 1000 is high.

The invention also discloses a kind of steering 10, and with reference to figure 22, the steering 10 of the embodiment of the present invention is provided with The motor pump assembly 1000 of any of the above-described kind of embodiment description.

The invention also discloses a kind of vehicle 1, and with reference to figure 23, the vehicle 1 of the embodiment of the present invention is provided with any of the above-described kind The steering 10 of embodiment description, alternatively, the vehicle 1 of the embodiment of the present invention can be bus car.

In addition, unless otherwise clearly defined and limited, the term such as term " installation ", " connected ", " connection ", " fixation " should It is interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can mechanically connect, It can be electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be the company of two element internals Logical or two elements interaction relationship, limited unless otherwise clear and definite.For the ordinary skill in the art, may be used To understand the concrete meaning of above-mentioned term in the present invention as the case may be.

Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changed, replacing and modification.

Claims (23)

1. A kind of 1. motor pump assembly, it is characterised in that including：

   Electric machine assembly；

   Oil pump component, on the end cap of the electric machine assembly, the upper end cover of the oil pump component has the oil pump modular support The end cap chamber connected through the upper end cover and with the high pressure chest of the oil pump component, and on the oil discharge passage of the oil pump component Provided with energy-absorbing portion；

   Internal sound insulation cover, the internal sound insulation cover are located at outside the oil pump component, and are limited with the oil pump component filled with low The internal layer sound insulation chamber of force feed, the internal layer sound insulation chamber connect with the low pressure chamber of the oil pump component；

   Pre-tightening buffer component, the pre-tightening buffer component are folded between the upper end cover and the internal sound insulation cover, and described pre- Locking buffering component connects with the high pressure chest of the oil pump component；

   Safety valve, the safety valve are arranged to the pressure release when the pressure of the high pressure chest is more than scheduled pressure value.
2. 2. motor pump assembly according to claim 1, it is characterised in that the upper end cover, which has, runs through the upper end cover And the end cap chamber connected with the high pressure chest of the oil pump component, the pre-tightening buffer component include piston and elastic component, the work Plug coordinates with the end cap chamber to completely cut off the high pressure chest and the internal layer sound insulation chamber, and the elastic component is used to provide pretightning force.
3. 3. motor pump assembly according to claim 2, it is characterised in that the safety valve includes being located at the end cap chamber Perisporium on relief hole, the relief hole connects the end cap chamber and the internal layer sound insulation chamber, and the pre-tightening buffer component is set It is set to the piston when the pressure of the high pressure chest is not more than the scheduled pressure value and blocks the relief hole, and in the height The piston is moved to the position for opening the relief hole when pressure of pressure chamber is more than the scheduled pressure value.
4. 4. motor pump assembly according to claim 2, it is characterised in that the elastic component elasticity is folded in the piston Between the internal sound insulation cover.
5. 5. motor pump assembly according to claim 4, it is characterised in that the end cap chamber is configured to shoulder hole to be formed The cascaded surface is only supported in cascaded surface, one end of the piston.
6. 6. motor pump assembly according to claim 5, it is characterised in that the end of the direction cascaded surface of the piston There is lug boss on face.
7. 7. motor pump assembly according to claim 1, it is characterised in that the elastic component is spring.
8. 8. motor pump assembly according to claim 1, it is characterised in that the perisporium of the piston and the end cap chamber it Between be provided with piston packing.
9. 9. motor pump assembly according to claim 1, it is characterised in that the piston be metal-nylon composite or Metal material is made.
10. 10. motor pump assembly according to claim 1, it is characterised in that the energy-absorbing portion is energy-storing chamber.
11. 11. motor pump assembly according to claim 10, it is characterised in that the sectional area of the energy-storing chamber is more than described The sectional area of the other parts of oil discharge passage.
12. 12. motor pump assembly according to claim 10, it is characterised in that the energy-storing chamber is located at the oil discharge passage Bending place.
13. 13. motor pump assembly according to claim 1, it is characterised in that the internal sound insulation cover includes：

    Top cover；

    Gusset, the top cover are connected with the gusset, and the gusset is connected with the end cap of the electric machine assembly.
14. 14. motor pump assembly according to claim 13, it is characterised in that the top cover passes through screw thread with the gusset Fastener is connected, and the end cap of the electric machine assembly is formed with the gusset and is integrated.
15. 15. motor pump assembly according to claim 13, it is characterised in that the lower surface of the top cover has spacious downwards The groove opened, the pre-tightening buffer component stop the bottom wall to the groove.
16. 16. motor pump assembly according to claim 1, it is characterised in that the oil discharge passage is located at the group of motors On the end cap of part, the oil discharge passage is connected by the lower channel through the bottom end cover with the lower end of the high pressure chest.
17. 17. the motor pump assembly according to any one of claim 1-16, it is characterised in that also include：

    Outer blimp, the outer blimp are located at outside at least part of the internal sound insulation cover, and are limited with the internal sound insulation cover Go out the outer layer sound insulation chamber for filling low pressure oil, the internal layer sound insulation chamber connects with the outer layer sound insulation chamber.
18. 18. motor pump assembly according to claim 17, it is characterised in that the outer blimp is that metal-nylon is compound Material is made.
19. 19. motor pump assembly according to claim 1, it is characterised in that the oil pump component is external gear rotary pump Or cycloid gear pump or vane pump or plunger pump.
20. 20. motor pump assembly according to claim 1, it is characterised in that the electric machine assembly is liquid-cooled, and described The motor cavity of electric machine assembly connects with the low pressure chamber of the oil pump component.
21. 21. motor pump assembly according to claim 20, it is characterised in that the rotor of the electric machine assembly is immersed in low In force feed.
22. 22. a kind of steering, it is characterised in that set total just like the motor pump any one of claim 1-21 Into.
23. 23. a kind of vehicle, it is characterised in that be provided with steering as claimed in claim 22.