CN217582901U - Bearing, pump device and vehicle - Google Patents

Abstract

The utility model provides a bearing, pump unit and vehicle, the bearing includes: a bearing body; the extending section is arranged at least one end of the bearing body along the axial direction of the bearing, and shaft holes are formed in the bearing body and the extending section; be equipped with first oil groove on the internal face in shaft hole, first oil groove runs through the bearing body and extends the section along the axial, first oil groove and shaft hole intercommunication, and first oil groove extends along the axis direction in shaft hole. The utility model provides a bearing, when bearing and pivot are connected, the pivot setting is in the shaft hole for the extension section can with the pivot contact, and then can avoid bearing department stress concentration problem, reduce the wearing and tearing of bearing simultaneously, promote bearing life, simultaneously, the pivot can take out the oil in the first oil groove when the bearing internal rotation, forms the oil film, further alleviates the wearing and tearing between bearing and the pivot.

Description

Bearing, pump device and vehicle

Technical Field

The utility model relates to a pump unit technical field particularly, relates to a bearing, a pump unit and a vehicle.

Background

At present, a rotating shaft is supported through a bearing in a pump device to realize the operation of the pump device, but in the related technology, the bearing of the pump device often has the problem of serious abrasion, and the service life is short.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

To this end, a first aspect of the present invention provides a bearing.

The second aspect of the present invention also provides a pump device.

The third aspect of the present invention also provides a vehicle.

In view of this, the first aspect of the present invention provides a bearing, including: a bearing body; the extending section is arranged at least one end of the bearing body along the axial direction of the bearing, and shaft holes are formed in the bearing body and the extending section; be equipped with first oil groove on the internal face in shaft hole, first oil groove runs through the bearing body and extends the section along the axial, first oil groove and shaft hole intercommunication, and first oil groove extends along the axis direction in shaft hole.

The utility model provides a bearing, including bearing body and extension, be provided with the shaft hole on extension and the bearing body, like this, when the bearing is connected with the pivot, the pivot is worn to establish in the shaft hole for the extension can contact with the pivot, and then can avoid bearing department stress concentration problem, reduces the wearing and tearing of bearing simultaneously, promotes bearing life.

Further, be provided with first oil groove on the inside wall in shaft hole, first oil groove runs through the bearing body and extends the section along the axis direction in shaft hole, setting through first oil groove, make liquid can follow first oil groove circulation, wherein, first oil groove and shaft hole intercommunication, thus, oil can be full of in the gap between first oil groove and bearing and pivot, can play lubricated effect, reduce the wearing and tearing between bearing and the pivot, in particular, the pivot is when the bearing internal rotation, can take out the oil in the first oil groove, form the oil film, further alleviate the wearing and tearing between bearing and the pivot.

It should be noted that, first oil groove extends along the axis direction in shaft hole, also is first oil groove for straight oil groove, and straight oil groove is the straight line form extension along the axis direction in shaft hole, makes the circulation of straight oil groove along what lubricating oil can be better on the one hand, and on the other hand can take out fluid at pivot pivoted in-process and form the oil film and support.

It can be understood that the flexible design of the bearing is realized by arranging the extension section on the bearing, and the rotating shaft is matched with the bearing to realize the rotating connection of the rotating shaft and the bearing. When the rotating shaft does not drive the load to rotate, gaps are formed between the rotating shaft and the bearing, when the rotating shaft drives the load to rotate, the rotating shaft can move along the radial direction to cause the gaps between the rotating shaft and the bearing to change, the pressure of the axial end part of the bearing is larger at the moment, when the rotating shaft generates radial unbalance loading, the rotating shaft can transmit the radial unbalance loading force to the extension section, and the extension section can deform under the action of the radial unbalance loading force, so that the radial unbalance loading force is effectively buffered, the problem of local stress concentration on the bearing is avoided, the abrasion of the bearing is reduced, the rotating shaft is in flexible contact with the bearing, the contact area between the rotating shaft and the bearing is increased, the surface pressure is reduced, the abrasion rate of the bearing is reduced, and the damage rate of the bearing is effectively reduced.

In specific application, the bearing body and the extension section are designed into a whole, and the bearing body and the extension section are manufactured into a whole.

According to the utility model provides a bearing can also have following additional technical characterstic:

in some possible designs, the wall thickness of the extension is greater than or equal to 0.5mm and less than or equal to 3mm.

In this design, the wall thickness of extension section is thin then can reduce the intensity of bearing to and the supporting role to the pivot, the wall thickness of extension section is thick then can reduce the flexibility of extension section, and then reduces the buffering to radial unbalance loading power, simultaneously, the unreasonable problem that then can not effectual avoid stress concentration of the wall thickness design of extension section, the serious problem of solution bearing wearing and tearing that also can not be better. Therefore, the thickness of the extension section is set to be larger than or equal to 0.5mm and smaller than or equal to 3mm, the strength of the extension section can be guaranteed, the buffer of the extension section on radial unbalance loading force can be guaranteed, the problem of stress concentration is solved well, bearing abrasion is reduced, and the service life of the bearing is prolonged.

It will be appreciated that the extension is of thin-walled construction.

In some possible designs, the ratio of the height of the extension to the height of the bearing in the axial direction of the shaft bore is greater than or equal to 2% and less than or equal to 50%.

In this design, the height of extending section is too high, then can influence the holistic intensity of bearing, and then reduces the support intensity to the pivot, can increase rocking of pivot, increases the noise of pump unit operation when the pump unit operation. The height of the extension section is too low, so that the buffer effect of the extension section on the radial unbalance loading force can be influenced, and meanwhile, the stress concentration problem and the bearing abrasion problem of the bearing are influenced by the arrangement of the height of the extension section. Therefore, the height of the extension section is set to be between 2% and 50% of the total height of the bearing, so that the supporting effect on the rotating shaft can be improved, the buffer on radial unbalance loading force can be guaranteed, the problem of stress concentration of the bearing can be avoided, the abrasion of the bearing is reduced, and the service life of the bearing is prolonged.

The height of the extension is the height along the axial direction of the shaft hole, and the height of the bearing is the height along the axial direction of the shaft hole.

In some possible designs, be equipped with first oil groove on the internal wall face in shaft hole, first oil groove runs through bearing body and extension section along the axial, first oil groove and shaft hole intercommunication.

In the case of this design, it is,

in some possible designs, the cross section of the first oil groove is arc-shaped along the radial direction of the shaft hole, and the circle center of the first oil groove is positioned in the shaft hole.

In this design, in the cross-section of the radial direction in edge shaft hole, the cross-section of first oil groove is arc, and the centre of a circle of first oil groove sets up in the shaft hole, and like this, when the pivot is rotatory in the shaft hole, the pivot drives the oil flow in the first oil groove, make the oil in the first oil groove take place along the flow of shaft hole circumference, form hydraulic pressure bearing area, realize the oil film bearing capacity, and then realize bearing to the spool, increase the good lubrication between pivot and the bearing, improve the wearing and tearing condition of pivot.

It can be understood that, because the cross-section of the first oil groove is arc-shaped, in the rotating process of the rotating shaft, oil in the first oil groove can flow from deep to shallow, so that a high pressure is formed in a pressure area, the bearing capacity of an oil film is further realized, and the rotating shaft is supported.

In some possible designs, the bearing comprises a sliding bearing.

In the design, the sliding bearing is a bearing which works under sliding friction, compared with a rolling bearing, the sliding bearing works stably, reliably and noiselessly, the sliding surface is separated by lubricating oil without direct contact under the condition of liquid lubrication, the friction loss and the surface abrasion can be greatly reduced, in addition, the lubricating oil is filled in a gap between the sliding bearing and the rotating shaft, a layer of oil film can be formed on the sliding surface, the fluid lubrication is realized, the oil film also has certain vibration absorption capacity, and the service lives of the bearing and the rotating shaft are prolonged.

According to the utility model discloses a second aspect still provides a pump device, include: the bearing provided by any one of the technical schemes.

The utility model discloses the pump unit that the second aspect provided because of the bearing that provides including above-mentioned arbitrary technical scheme, consequently has whole beneficial effect of bearing.

In some possible designs, the pump device further comprises: a housing; the rotating shaft is arranged in the shell, the bearing is connected with the shell, and the rotating shaft is rotatably connected with the bearing through the shaft hole.

In this design, pump unit still includes casing and pivot, and pivot and bearing setting are in the casing, bearing and casing fixed connection, and the pivot setting is in the bearing and the bearing cooperation, wherein, is provided with the shaft hole in extension section and the bearing body, consequently extension section and bearing body all cooperate with the pivot for extension section can contact with the pivot, and then can avoid bearing department stress concentration problem, reduces the wearing and tearing of bearing simultaneously, promotes bearing life.

In some possible designs, the pump device further comprises: a motor section and a pump section; the casing is including the motor chamber and the pump chamber that are linked together, and motor portion locates the motor chamber, and pump portion locates the pump intracavity, and motor portion and pump portion all rotate with the pivot to be connected, and motor portion and pump portion are located the both ends of bearing.

In the design, the pump device further comprises a motor part and a pump part which are arranged in the shell, so that the motor part and the pump part can normally operate, and external interference is avoided. Wherein, the casing includes motor chamber and pump chamber, and the motor portion sets up in the motor chamber, and pump portion sets up in the pump chamber, and motor chamber and pump chamber are linked together for oil can circulate between motor chamber and pump chamber, and then takes away the heat of motor portion, improves the radiating effect of motor portion. Motor portion and pump portion all are connected with the pivot, and along the axis direction of pivot, and motor portion and pump portion are located the both ends of bearing, and like this, when pump device ran, motor portion drove the pivot and rotates, and the pivot drives pump portion and rotates, and then realizes doing work to pump intracavity liquid to realize pump device to the pumping of liquid.

It is understood that the liquid in the pump device comprises oil.

In some possible designs, the pump device further comprises: the pump cover, the one end of casing is located to the pump cover lid, is equipped with inlet port and oil outlet on the pump cover, inlet port and oil outlet and pump chamber intercommunication.

In this design, the pump unit still includes the pump cover, the one end at the casing is established to the pump bonnet lid, enclose into the cavity with the casing together, in order to avoid motor portion and pump portion to receive the influence of other structures, wherein, be provided with inlet port and oil outlet on the pump cover, inlet port and oil outlet and pump chamber intercommunication, liquid can flow to the pump chamber by the inlet port then flow out the oil outlet, realize the pump sending of liquid, and simultaneously, because pump chamber and motor chamber intercommunication, consequently, liquid also can get into the pump chamber by the inlet port, and then get into the motor chamber, then flow into the pump chamber by the motor chamber, the oil outlet flows out at last, take away the heat of motor portion, realize the heat dissipation of motor portion.

In some possible designs, the pump part and the shell enclose a first pressure cavity and a second pressure cavity, the first pressure cavity is communicated with the oil outlet, the second pressure cavity is communicated with the oil inlet, and the pressure borne by the first pressure cavity is greater than that borne by the second pressure cavity; be equipped with the second oil groove on the casing, the motor chamber passes through second oil groove and second pressure chamber intercommunication, and first pressure chamber passes through first oil groove and motor chamber intercommunication.

In this design, pump portion and casing enclose out first pressure chamber and second pressure chamber, inlet port and first pressure chamber intercommunication, oil outlet and second pressure chamber intercommunication, like this, when motor portion and pump portion move, under the effect of pump portion, pressure in first pressure chamber is higher, pressure in the second pressure chamber is lower, consequently, liquid can be by the lower second pressure chamber of inlet port inflow pressure, then by the first pressure chamber of extrusion muscle under the effect of pump portion, and then by first pressure chamber flow direction oil outlet, realize the pumping of liquid.

Meanwhile, a second oil groove is formed in the shell and communicated with the motor cavity and the second pressure cavity, a first oil groove is formed in a bearing located between the pump cavity and the motor cavity and communicated with the first pressure cavity and the motor cavity. Wherein, the pressure that first pressure chamber bore is higher than the pressure that the second pressure chamber bore, thus, under the drive of pressure difference, liquid in the first pressure chamber can flow to the motor chamber through first oil groove, liquid in the motor chamber can flow to the second pressure chamber through the second oil groove, that is, under the effect of the pressure difference of first pressure chamber and second pressure chamber, make liquid in the first chamber can flow into the motor chamber, liquid in the motor chamber can flow to the second chamber, and then realized the flow of liquid in the motor chamber, can take away the heat of motor portion in the motor chamber, improve the radiating effect of motor portion.

That is, the technical scheme that this application provided includes first oil circuit and second oil circuit. First oil circuit comprises inlet port, second pressure chamber, first pressure chamber and oil outlet, and liquid gets into the second pressure chamber by the inlet port, then flows to first pressure chamber under the effect of pump portion, and then flows to the oil outlet by first pressure chamber.

The second oil circuit is by first pressure chamber, first oil groove, the motor chamber, the second oil groove, the second pressure chamber constitutes, wherein, first pressure chamber, the pressure of motor chamber and second pressure chamber reduces gradually, and then the second oil circuit realizes the circulation under the effect of pressure difference, concretely, liquid gets into the motor chamber through first oil groove by first pressure chamber, then get into the second pressure chamber through the second oil groove by the motor chamber, take away the heat of motor portion, realize the heat dissipation of motor portion.

Meanwhile, the motor cavity is communicated with the pump cavity, and oil inlet in the motor cavity is realized, so that an oil seal device is not required to be arranged at a bearing, the number of sealing elements between shafts is reduced, and the production cost is reduced.

In some possible designs, a third pressure cavity is formed among the bearing, the rotating shaft and the pump part, and a third oil groove is further formed in the shell; the first pressure cavity, the third oil groove, the third pressure cavity, the first oil groove and the motor cavity are communicated in sequence; the pressure born by the first pressure cavity, the third pressure cavity, the motor cavity and the second pressure cavity is decreased progressively in sequence.

In this design, form the third pressure chamber between bearing, pivot and the pump portion, the third pressure chamber passes through the first pressure chamber of third oil groove intercommunication on the casing, and the third pressure chamber communicates through first oil groove and motor chamber, and promptly, first pressure chamber and motor chamber communicate through third oil groove, third pressure chamber and first oil groove. Wherein, the pressure that first pressure chamber, third pressure chamber, motor chamber, second pressure chamber bore diminishes in proper order, consequently, under the effect of pressure difference, the liquid in the first pressure chamber flows to the third pressure chamber through the third oil groove, then flows to the motor chamber through first oil groove, and then flows to first pressure chamber through the second oil groove, realizes the flow of the interior liquid of motor chamber, takes away the heat that motor portion produced, improves the radiating effect of motor portion.

In specific application, liquid flows to first pressure chamber by the motor chamber through the second oil groove after, under gear pump's effect, flows to first pressure chamber once more, and then flows out the casing by first pressure chamber.

It should be noted that the third pressure chamber may be referred to as an intermediate pressure chamber, and the third oil groove is a throttling groove.

It is understood that the second oil passage includes: first pressure chamber, third oil groove, third pressure chamber, first oil groove, motor chamber, second oil groove and the second pressure chamber that communicates in proper order.

That is, the pump unit includes first oil circuit and second oil circuit, first oil circuit is including the inlet port that communicates in proper order, the second pressure chamber, first pressure chamber and oil outlet, the pump portion operation back, form first pressure chamber and second pressure chamber, the pressure of second pressure chamber is lower, consequently outside liquid is by the inlet port flow direction second pressure chamber, then extrude into first pressure chamber, and then flow out by the oil outlet, that is, liquid is by the inlet port flow direction second pressure chamber, then flow to first pressure chamber and then flow out the oil outlet, realize the flow of first oil circuit. The second oil circuit is including the first pressure chamber that communicates in proper order, the third oil groove, the third pressure chamber, first oil groove, the motor chamber, second oil groove and second pressure chamber, wherein, first pressure chamber, the third pressure chamber, the pressure of motor chamber and second pressure chamber reduces gradually, therefore, under the effect of pressure difference, liquid flows the third oil groove by first pressure chamber in proper order, the third pressure chamber, first oil groove, the motor chamber, second oil groove and second pressure chamber, realize the circulation of second oil circuit, that is, in the technical scheme that this application provided, first oil circuit and second oil circuit have, the pumping of pump unit to liquid has been realized to first oil circuit, the heat dissipation of motor portion has been realized to the second oil circuit.

In some possible designs, the pump device further comprises: and the electric control part is arranged in the shell and is positioned on one side of the motor part, which deviates from the pump part.

In the design, the pump device further comprises an electric control part, the electric control part is arranged in the shell and located on one side, away from the pump part, of the motor part, and the electric control part is connected with the motor part to control the motor part.

In some possible designs, the bearing is of unitary construction with the housing.

In the design, the bearing and the shell are of an integrated structure, and the connection strength between the shell and the bearing is improved.

According to the utility model discloses a second aspect still provides a vehicle, include: a bearing as set forth in any of the above-mentioned first aspects, or a pump apparatus as set forth in any of the above-mentioned second aspects.

The utility model discloses the vehicle that the second aspect provided, because of including the bearing that any technical scheme of above-mentioned first aspect provided, or the pump unit that any technical scheme of above-mentioned second aspect provided, consequently have bearing or pump unit's whole beneficial effect.

It is worth to say that the vehicle can be a traditional fuel vehicle or a new energy vehicle. The new energy automobile comprises a pure electric automobile, a range-extended electric automobile, a hybrid electric automobile, a fuel cell electric automobile, a hydrogen engine automobile and the like.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic structural view of a pump device according to an embodiment of the present invention;

FIG. 2 shows a schematic structural diagram at A of the embodiment shown in FIG. 1;

fig. 3 shows another schematic structural view of a pump device according to an embodiment of the present invention;

fig. 4 shows a schematic structural view of a bearing according to an embodiment of the present invention;

fig. 5 shows a further schematic structural view of a pump device according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 5 is:

the pump comprises a bearing 1, a bearing body 10, an extension section 12, a shaft hole 14, a first oil groove 16, a shell 2, a second oil groove 20, a motor cavity 22, a pump cavity 24, a rotating shaft 3, a motor part 4, a pump part 5, a first gear 50, a second gear 52, a third pressure cavity 54, a pump cover 6, an oil inlet 60 and an oil outlet 62.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A bearing, a pump device and a vehicle according to some embodiments of the present invention are described below with reference to fig. 1 to 5.

As shown in fig. 1 to 5, according to the first embodiment of the present invention, the present invention provides a bearing 1, including: a bearing body 10 and an extension 12.

Specifically, as shown in fig. 2 and 3, an extension 12 is provided at least one end of the bearing body 10 in the axial direction of the bearing 1, and a shaft hole 14 is provided on the bearing body 10 and the extension 12. As shown in fig. 3 and 4, a first oil groove 16 is provided on an inner wall surface of the shaft hole 14, the first oil groove 16 axially penetrates through the bearing body 10 and the extension section 12, and the first oil groove 16 is communicated with the shaft hole 14. And the first oil groove 16 extends in the axial direction of the shaft hole 14.

The utility model provides a bearing 1, including bearing body 10 and extension 12, be provided with shaft hole 14 on extension 12 and the bearing body 10, like this, when bearing 1 is connected with pivot 3, pivot 3 is worn to establish in shaft hole 14 for extension 12 can contact with pivot 3, and then can avoid bearing 1 department stress concentration problem, reduces bearing 1's wearing and tearing simultaneously, promotes bearing 1 life.

Further, be provided with first oil groove 16 on the inside wall in shaft hole 14, first oil groove 16 runs through bearing body 10 and extension section 12 along the axis direction in shaft hole 14, setting through first oil groove 16, make liquid can follow first oil groove 16 circulation, wherein, first oil groove 16 and shaft hole 14 intercommunication, thus, oil can be full of in the gap between first oil groove 16 and bearing 1 and pivot 3, can play lubricated effect, reduce the wearing and tearing between bearing 1 and the pivot 3, in particular, when pivot 3 is in 1 internal rotation of bearing, can take out the oil in first oil groove 16, form the oil film, further alleviate the wearing and tearing between bearing 1 and the pivot 3.

It should be noted that, first oil groove 16 extends along the axis direction of shaft hole 14, and also first oil groove 16 is straight oil groove, and straight oil groove is the straight line form extension along the axis direction of shaft hole 14, makes the circulation of straight oil groove along that lubricating oil can be better on the one hand, and on the other hand can take out oil with the pivoted in-process of pivot 3 and form the oil film and support.

It can be understood that the extension section 12 provided on the bearing 1 realizes the flexible design of the bearing 1, and the rotating shaft 3 is matched with the bearing 1 to realize the rotating connection between the rotating shaft 3 and the bearing 1. When the rotating shaft 3 does not drive a load to rotate, gaps are formed between the rotating shaft 3 and the bearing 1, when the rotating shaft 3 drives the load to rotate, the rotating shaft 3 can move along the radial direction to cause the gaps between the rotating shaft 3 and the bearing 1 to change, the pressure of the axial end part of the bearing 1 is larger at the moment, when the rotating shaft 3 generates radial unbalance loading, the rotating shaft 3 can transmit the radial unbalance loading force to the extension section 12, and the extension section 12 can deform under the action of the radial unbalance loading force, so that the radial unbalance loading force is effectively buffered, the problem of local stress concentration on the bearing 1 is avoided, the abrasion of the bearing 1 is reduced, the rotating shaft 3 is in flexible contact with the bearing 1, the contact area between the rotating shaft 3 and the bearing 1 is increased, the surface pressure is reduced, the abrasion rate of the bearing 1 is reduced, and the damage rate of the bearing 1 is effectively reduced.

In a specific application, the bearing body 10 and the extension section 12 are designed as a single body, and the bearing body 10 and the extension section 12 are manufactured integrally.

According to the second embodiment of the present invention, on the basis of the first embodiment, further: the wall thickness of the extension 12 is greater than or equal to 0.5mm and less than or equal to 3mm.

In this design, the too thin intensity that then can reduce bearing 1 of extension 12's wall thickness to the supporting role to pivot 3, the too thick flexibility that then can reduce extension 12 of extension 12's wall thickness, and then reduces the buffering to radial unbalance loading power, simultaneously, the unreasonable problem that then can not effectual avoid stress concentration of the wall thickness design of extension 12, the serious problem of solution bearing 1 wearing and tearing that also can not be better. Therefore, the thickness of the extension section 12 is set to be larger than or equal to 0.5mm and smaller than or equal to 3mm, the strength of the extension section 12 can be guaranteed, the buffer of the extension section 12 to radial offset load can be guaranteed, the problem of stress concentration is solved, the abrasion of the bearing 1 is reduced, and the service life of the bearing 1 is prolonged.

In a particular application, the extension 12 has a thickness of 1mm, 1.5mm, 2mm, 2.5mm.

It will be appreciated that the extension 12 is of thin-walled construction.

In some possible designs, the ratio of the height of the extension 12 to the height of the bearing 1 in the axial direction of the shaft hole 14 is greater than or equal to 2% and less than or equal to 50%.

In this design, the height of extension 12 is too high, and then can influence the holistic intensity of bearing 1, and then reduces the support intensity to pivot 3, can increase rocking of pivot 3 when the pump unit operation, increases the noise of pump unit operation. If the height of the extension 12 is too low, the effect of the extension 12 on buffering the radial unbalance loading force will be affected, and meanwhile, the installation of the height of the extension 12 affects the stress concentration problem of the bearing 1 and the wear problem of the bearing 1. Therefore, the height of the extension section 12 is set to be between 2% and 50% of the total height of the bearing 1, so that the supporting effect on the rotating shaft 3 can be improved, the buffer on radial unbalance loading force can be guaranteed, the problem of stress concentration of the bearing 1 can be avoided, the abrasion of the bearing 1 is reduced, and the service life of the bearing 1 is prolonged.

The height of the extension 12 is the height along the axial direction of the shaft hole 14, and the height of the bearing 1 is the height along the axial direction of the shaft hole 14.

In a particular application, the ratio of the height of the extension 12 to the height of the bearing 1 is 5%,10%, 15%,20%,25%,30%,35%,40%,45%.

As shown in fig. 4, according to a third embodiment of the present invention, on the basis of the above embodiment, further: along the radial direction of shaft hole 14, first oil groove 16's cross-section is circular arc, and the centre of a circle of first oil groove 16 is located shaft hole 14.

In this design, in the cross-section of the radial direction in axle hole 14, the cross-section of first oil groove 16 is arc, and the centre of a circle of first oil groove 16 sets up in axle hole 14, thus, when pivot 3 is rotatory in axle hole 14, pivot 3 drives the oil flow in the first oil groove 16, make the oil in the first oil groove 16 take place along the flow of 14 circumference in axle hole, form hydraulic pressure bearing area, realize oil film bearing capacity, and then realize bearing to pivot 3, increase the good lubrication between pivot 3 and the bearing 1, improve the wearing and tearing condition of pivot 3.

It can be understood that, because the cross section of the first oil groove 16 is circular arc, in the process of rotating the rotating shaft 3, the oil in the first oil groove 16 can flow from deep to shallow, so that a high pressure is formed in a pressure area, and further, the oil film bearing capacity is realized, and the supporting of the rotating shaft 3 is realized.

According to the fourth embodiment of the present invention, on the basis of the above-mentioned embodiments, further: the bearing 1 comprises a plain bearing.

In the design, the sliding bearing is a bearing which works under sliding friction, compared with a rolling bearing, the sliding bearing works stably, reliably and noiselessly, under the condition of liquid lubrication, the sliding surface is separated by lubricating oil without direct contact, the friction loss and the surface abrasion can be greatly reduced, in addition, the lubricating oil is filled in the gap between the sliding bearing and the rotating shaft 3, a layer of oil film can be formed on the sliding surface, the fluid lubrication is realized, the oil film also has certain vibration absorption capacity, and the service life of the bearing 1 and the rotating shaft 3 is prolonged.

As shown in fig. 1 to 5, according to a fifth embodiment of the present invention, there is also provided a pump apparatus including: a bearing 1 as set forth in any of the above embodiments.

The utility model provides a pump unit because of bearing 1 including the suggestion of above-mentioned arbitrary embodiment, consequently has bearing 1's whole beneficial effect.

As shown in fig. 1, 2 and 5, in some possible designs, the pump device further comprises: a housing 2; the rotating shaft 3 is arranged in the shell 2, the bearing 1 is connected with the shell 2, and the rotating shaft 3 is rotatably connected with the bearing 1 through the shaft hole 14.

In this design, the pump unit still includes casing 2 and pivot 3, pivot 3 and bearing 1 set up in casing 2, bearing 1 and casing 2 fixed connection, pivot 3 sets up in bearing 1 with bearing 1 cooperation, wherein, be provided with shaft hole 14 in extension section 12 and the bearing body 10, consequently, extension section 12 and bearing body 10 all cooperate with pivot 3, make extension section 12 can contact with pivot 3, and then can avoid 1 department stress concentration problem of bearing, reduce the wearing and tearing of bearing 1 simultaneously, promote 1 life of bearing.

As shown in fig. 1 and 2, according to a sixth embodiment of the present invention, on the basis of the fifth embodiment, further, the pump device further includes: a motor section 4 and a pump section 5; casing 2 is including the motor chamber 22 and the pump chamber 24 that are linked together, and motor portion 4 is located in motor chamber 22, and pump portion 5 is located in pump chamber 24, and motor portion 4 and pump portion 5 all rotate with pivot 3 and are connected, and motor portion 4 and pump portion 5 are located the both ends of bearing 1.

In this design, the pump device further comprises a motor part 4 and a pump part 5, the motor part 4 and the pump part 5 being arranged in the housing 2 such that the motor part 4 and the pump part 5 can operate normally, avoiding external disturbances. Wherein, casing 2 includes motor chamber 22 and pump chamber 24, and motor portion 4 sets up in motor chamber 22, and pump portion 5 sets up in pump chamber 24, and motor chamber 22 and pump chamber 24 are linked together for oil can circulate between motor chamber 22 and pump chamber 24, and then takes away the heat of motor portion 4, improves the radiating effect of motor portion 4. Motor portion 4 and pump portion 5 all are connected with pivot 3, and along pivot 3's axis direction, and motor portion 4 and pump portion 5 are located the both ends of bearing 1, and like this, when the pump unit operation, motor portion 4 drives pivot 3 and rotates, and pivot 3 drives pump portion 5 and rotates, and then realizes doing work to liquid in the pump chamber 24 to realize the pump unit to the pumping of liquid.

It is understood that the liquid in the pump device comprises oil.

In some possible designs, the motor portion 4 includes: a rotating shaft 3 arranged in the shell 2; the rotor is sleeved on the rotating shaft 3; and the stator is arranged in the shell 2, and the rotor is positioned in the stator and is rotationally connected with the stator.

In this design, the motor part 4 includes a rotating shaft 3, a stator and a rotor, the rotor is sleeved on the rotating shaft 3, and the stator is located outside the rotor and is connected with the rotor in a rotating manner. After the power is switched on, the rotor drives the rotating shaft 3 to rotate under the action of the magnetic field, so that the driving of the pump device is realized.

In a particular application, the stator also has windings thereon.

Further, the rotor is fixed on the rotating shaft.

As shown in fig. 2 and 5, in some possible designs, the pump device further comprises: the pump cover 6, the one end of casing 2 is located in the lid of pump cover 6, is equipped with inlet port 60 and oil outlet 62 on the pump cover 6, and inlet port 60 and oil outlet 62 communicate with pump chamber 24.

In the design, the pump device further comprises a pump cover 6, the pump cover 6 is arranged at one end of the shell 2 in a covering mode, and the pump cover 6 and the shell 2 are enclosed into a cavity, so that the motor portion 4 and the pump portion 5 are prevented from being influenced by other structures, wherein an oil inlet 60 and an oil outlet 62 are formed in the pump cover 6, the oil inlet 60 and the oil outlet 62 are communicated with the pump cavity 24, liquid can flow to the pump cavity 24 through the oil inlet 60 and then flow out of the oil outlet 62, pumping of the liquid is achieved, meanwhile, due to the fact that the pump cavity 24 is communicated with the motor cavity 22, the liquid can also enter the pump cavity 24 through the oil inlet 60 and then enter the motor cavity 22, then flows to the pump cavity 24 through the motor cavity 22 and finally flows out of the oil outlet 62, heat of the motor portion 4 is taken away, and heat dissipation of the motor portion 4 is achieved.

In some possible designs, the pump portion 5 and the housing 2 enclose a first pressure chamber and a second pressure chamber, the first pressure chamber is communicated with the oil outlet 62, the second pressure chamber is communicated with the oil inlet 60, and the pressure borne by the first pressure chamber is greater than that borne by the second pressure chamber; be equipped with second oil groove 20 on casing 2, motor chamber 22 passes through second oil groove 20 and second pressure chamber intercommunication, and first pressure chamber passes through first oil groove 16 and motor chamber 22 intercommunication on the bearing 1.

In this design, pump portion 5 encloses first pressure chamber and second pressure chamber with casing 2, inlet port 60 and first pressure chamber intercommunication, oil outlet 62 and second pressure chamber intercommunication, like this, when motor portion 4 and pump portion 5 operate, under pump portion 5's effect, pressure in the first pressure chamber is higher, pressure in the second pressure chamber is lower, consequently, liquid can flow into the lower second pressure chamber of pressure by inlet port 60, then by the first pressure chamber of extrusion muscle under pump portion 5's effect, and then by first pressure chamber flow direction outlet port 62, realize the pumping of liquid.

Meanwhile, a second oil groove 20 is formed in the shell 2, the second oil groove 20 is communicated with the motor cavity 22 and a second pressure cavity, a first oil groove 16 is formed in the bearing 1 between the pump cavity 24 and the motor cavity 22, and the first oil groove 16 is communicated with the first pressure cavity and the motor cavity 22. Wherein, the pressure that first pressure chamber bore is higher than the pressure that the second pressure chamber bore, thus, under the drive of pressure difference, liquid in the first pressure chamber can flow to motor chamber 22 through first oil groove 16, liquid in the motor chamber 22 can flow to the second pressure chamber through second oil groove 20, that is, under the effect of the pressure difference of first pressure chamber and second pressure chamber, make liquid in the first chamber can flow into motor chamber 22, liquid in the motor chamber 22 can flow to the second chamber, and then the flow of liquid in the motor chamber 22 has been realized, can take away the heat of motor portion 4 in the motor chamber 22, improve the radiating effect of motor portion 4.

That is, the embodiment proposed in the present application includes the first oil passage and the second oil passage. The first oil path is composed of an oil inlet 60, a second pressure chamber, a first pressure chamber and an oil outlet 62, liquid enters the second pressure chamber from the oil inlet 60, then flows to the first pressure chamber under the action of the pump part 5, and further flows to the oil outlet 62 from the first pressure chamber.

The second oil circuit comprises a first pressure cavity, a first oil groove 16, a motor cavity 22, a second oil groove 20 and a second pressure cavity, wherein the pressure of the first pressure cavity, the motor cavity 22 and the second pressure cavity is gradually reduced, and then the second oil circuit realizes circulation under the action of pressure difference, specifically, liquid enters the motor cavity 22 through the first oil groove 16 by the first pressure cavity, and then enters the second pressure cavity through the second oil groove 20 by the motor cavity 22, take away the heat of the motor part 4, and the heat dissipation of the motor part 4 is realized.

Meanwhile, the motor cavity 22 is communicated with the pump cavity 24, oil is fed into the motor cavity 22, and therefore an oil sealing device does not need to be arranged at the bearing 1, the number of shaft sealing pieces is reduced, and production cost is reduced.

Specifically, second oil groove 20 is a return oil groove, and first oil groove 16 is a straight oil groove. The first pressure chamber is a high pressure chamber and the second pressure chamber is a low pressure chamber.

Specifically, the pump section 5 includes a gear pump including a first gear 50 and a second gear 52, the first gear 50 is engaged with the rotary shaft 3, the second gear 52 is disposed outside the first gear 50, and the first gear 50 can rotate the second gear 52. In this design, the first gear 50 is in interference fit with the rotating shaft 3, and when the rotating shaft 3 rotates, the first gear 50 can rotate along with the rotation of the rotating shaft 3, so as to drive the second gear 52 to rotate, thereby realizing the work done on the liquid in the housing 2.

In the process of meshing transmission of the first gear 50 and the second gear 52, a first cavity and a second cavity, namely a high-pressure cavity and a low-pressure cavity, can be formed, the high-pressure cavity is communicated with the oil outlet 62 on the pump cover 6, the low-pressure cavity is communicated with the oil inlet 60 on the pump cover 6, and when the pump device operates, liquid enters the low-pressure cavity from the oil inlet 60 and then flows to the oil outlet 62 through the high-pressure cavity.

As shown in fig. 2, in some possible designs, a third pressure chamber 54 is formed between the bearing 1, the rotating shaft 3 and the pump portion 5, and a third oil groove is further formed on the housing 2; the first pressure cavity, the third oil groove, the third pressure cavity 54, the first oil groove 16 and the motor cavity 22 are communicated in sequence; the pressure born by the first pressure cavity, the third pressure cavity 54, the motor cavity 22 and the second pressure cavity is decreased progressively in sequence.

In this design, a third pressure chamber 54 is formed between the bearing 1, the rotating shaft 3 and the pump portion 5, the third pressure chamber 54 communicates with the first pressure chamber through a third oil groove on the housing 2, and the third pressure chamber 54 communicates with the motor chamber 22 through the first oil groove 16, that is, the first pressure chamber and the motor chamber 22 communicate with each other through the third oil groove, the third pressure chamber 54 and the first oil groove 16. Wherein, first pressure chamber, third pressure chamber 54, motor chamber 22, the pressure that the second pressure chamber bore is decreased progressively in proper order, therefore, under the effect of pressure difference, the liquid in the first pressure chamber flows to third pressure chamber 54 through the third oil groove, then flow to motor chamber 22 through first oil groove 16, and then flow to first pressure chamber through second oil groove 20, realize the flow of liquid in motor chamber 22, take away the heat that motor portion 4 produced, improve motor portion 4's radiating effect.

In specific application, after liquid flows to the first pressure cavity through the second oil groove 20 by the motor cavity 22, under the effect of the gear pump, the liquid flows to the first pressure cavity again, and then flows out of the shell 2 by the first pressure cavity.

It should be noted that the third pressure chamber 54 may be referred to as a medium pressure chamber, and the third oil groove is a throttling groove.

It is understood that the second oil passage includes: first pressure chamber, third oil groove, third pressure chamber 54, first oil groove 16, motor chamber 22, second oil groove 20 and the second pressure chamber that communicate in proper order.

That is, the pump device includes a first oil path and a second oil path, the first oil path includes an oil inlet 60, a second pressure chamber, a first pressure chamber and an oil outlet 62 which are communicated in sequence, after the pump portion 5 operates, the first pressure chamber and the second pressure chamber are formed, the pressure of the second pressure chamber is lower, and therefore external liquid flows to the second pressure chamber from the oil inlet 60, then the external liquid is extruded into the first pressure chamber, and then flows out from the oil outlet 62, that is, the liquid flows to the second pressure chamber from the oil inlet 60, and then flows to the first pressure chamber and further flows out from the oil outlet 62, and the flow of the first oil path is realized. The second oil path includes the first pressure chamber that communicates in proper order, the third oil groove, third pressure chamber 54, first oil groove 16, motor chamber 22, second oil groove 20 and second pressure chamber, wherein, first pressure chamber, third pressure chamber 54, the pressure of motor chamber 22 and second pressure chamber reduces gradually, therefore, under the effect of pressure difference, liquid flows through the third oil groove by first pressure chamber in proper order, third pressure chamber 54, first oil groove 16, motor chamber 22, second oil groove 20 and second pressure chamber, realize the circulation of second oil path, also, the embodiment that this application provided, have first oil path and second oil path, the pumping of pump unit to liquid has been realized to first oil path, the heat dissipation of motor portion 4 has been realized to the second oil path.

According to the seventh embodiment of the present invention, on the basis of the sixth embodiment, further: the pump device further comprises: and the electric control part is arranged in the shell 2 and is positioned on one side of the motor part 4 departing from the pump part 5.

In the design, the pump device further comprises an electric control part, the electric control part is arranged in the shell 2 and is positioned on one side, away from the pump part 5, of the motor part 4, and the electric control part is connected with the motor part 4 to control the motor part 4.

Furthermore, one end of the shell 2, which is far away from the pump cover 6, is provided with a sinking groove, and at least one part of the electric control part is arranged in the sinking groove, so that the whole length of the pump device can be reduced while the electric control part is installed, and the miniaturization of the pump device is realized. Wherein, automatically controlled portion is sealed between sealed glue and casing 2 for automatically controlled portion can fix in the heavy inslot of casing 2, has still guaranteed the sealed of junction between automatically controlled portion and the casing 2, avoids the machine oil in the pump unit to get into and causes the damage of automatically controlled portion in the automatically controlled portion.

It can be understood that electrically controlled portion is sealed with casing 2 through sealed glue, and sealed glue when playing sealed effect, can also bond electrically controlled portion and casing 2 together, also play the effect of being connected electrically controlled portion and casing 2 promptly, and then need not use other parts to fix electrically controlled portion, has reduced the use of spare part, has simplified the installation, has reduced manufacturing cost.

In particular applications, the sealant comprises an epoxy sealant.

Further, the pump device further comprises a rear cover, the rear cover is arranged at one end, far away from the end cover, of the shell 2, the rear cover and the shell 2 limit the electric control part in the sink groove together, and movement of the electric control part in the axial direction of the pump device is avoided. Meanwhile, the rear cover, the shell 2 and the electric control part are connected in a sealing mode through sealing glue, on one hand, the electric control part, the shell 2 and the rear cover are bonded together through the sealing glue, fixing of the electric control part is achieved, connection of connecting pieces such as screws is not needed, production cost is reduced, on the other hand, the rear cover, the shell 2 and the electric control part are connected in a sealing mode through the sealing glue, sealing between the electric control part and the rear cover and between the shell 2 is achieved, oil leakage from gaps between the electric control part and the rear cover and between the rear cover and the shell 2 is avoided, and safety performance of the pump device is improved.

Furthermore, the rear cover is further provided with a radiating part, the radiating effect of the electric control part is improved through the arrangement of the radiating part, and the performance of the electric control part is ensured. Wherein, the radiating part sets up the one side that deviates from automatically controlled portion at the back lid, and the radiating part sets up the outside at the casing promptly, and then can distribute automatically controlled portion and the heat in the casing to the outside through the radiating part, has promoted pump unit's heat dispersion.

In a particular application, the pump device further includes a connector and first and second prongs. The first contact pin is connected with the motor part 4 and the electric control part, the second contact pin is connected with the electric control part and the connector, the radial displacement of the electric control part along the motor part 4 is limited through the arrangement of the first contact pin, and the position of the electric control part is further limited through the second contact pin.

The first contact pin is arranged along the rotation axis of the motor part 4, one end of the first contact pin is connected with the motor part 4, the other end of the first contact pin is connected with the electric control part, and therefore the electric control part is limited from moving upwards along the radial direction of the motor part 4, and electric connection between the motor part 4 and the electric control part is achieved.

It should be noted that the first pin includes a pin, and the second pin includes a pin.

Specifically, the first contact pin passes through welded connection with automatically controlled board, and the second contact pin passes through welded connection with automatically controlled board.

Further, the first contact pin is connected with the stator, so that the electric connection between the motor part 4 and the electric control part is realized.

Furthermore, the outer side of the shell 2 is provided with an insert groove, and the connector is arranged in the insert groove and connected with the electric control board through a second contact pin.

Furthermore, the shell 2 is also provided with a weight reduction groove, and the weight of the whole pump device is reduced by the weight reduction groove, so that the production cost is reduced.

As shown in fig. 2 and 3, according to the eighth embodiment of the present invention, on the basis of the fifth to seventh embodiments, further: the bearing 1 and the housing 2 are of an integrated structure.

In this design, the bearing 1 and the housing 2 are of an integrated structure, and the connection strength between the housing 2 and the bearing 1 is improved.

According to the utility model discloses a ninth embodiment still provides a vehicle, include: a bearing 1 as set forth in any one of the embodiments of the first aspect above, or a pump device as set forth in any one of the embodiments of the second aspect above.

The utility model discloses the vehicle that the second aspect provided, because of including bearing 1 that any embodiment of above-mentioned first aspect provided, or the pump unit that any embodiment of above-mentioned second aspect provided, consequently have bearing 1 or pump unit's whole beneficial effect.

It is worth to say that the vehicle can be a traditional fuel vehicle or a new energy vehicle. The new energy automobile comprises a pure electric automobile, a range-extended electric automobile, a hybrid electric automobile, a fuel cell electric automobile, a hydrogen engine automobile and the like.

In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly and include, for example, fixed connections, detachable connections, or integral connections; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (14)

1. A bearing, comprising:

a bearing body;

the extending section is arranged at least one end of the bearing body along the axial direction of the bearing, and shaft holes are formed in the bearing body and the extending section;

be equipped with first oil groove on the internal face in shaft hole, first oil groove runs through along the axial bearing body with the extension section, first oil groove with the shaft hole intercommunication, first oil groove is followed the axis direction in shaft hole extends.

2. The bearing of claim 1, wherein the wall thickness of the extension is greater than or equal to 0.5mm and less than or equal to 3mm.

3. The bearing of claim 1, wherein a ratio of a height of the extension to a height of the bearing in an axial direction of the shaft hole is greater than or equal to 2% and less than or equal to 50%.

4. The bearing according to any one of claims 1 to 3, wherein a cross section of the first oil groove is circular arc-shaped in a radial direction of the shaft hole, and a center of the first oil groove is located in the shaft hole.

5. A bearing according to any of claims 1 to 3, wherein the bearing comprises a plain bearing.

6. A pump apparatus, comprising:

the bearing of any one of claims 1 to 5.

7. The pump apparatus of claim 6, further comprising:

a housing;

a rotating shaft arranged in the shell body,

the bearing is connected with the shell, and the rotating shaft is rotatably connected with the bearing through the shaft hole.

8. The pump arrangement of claim 7, further comprising:

a motor section and a pump section;

the casing is including the motor chamber and the pump chamber that are linked together, motor portion locates in the motor chamber, pump portion locates in the pump chamber, motor portion with pump portion all with the pivot is rotated and is connected, motor portion with pump portion is located the both ends of bearing.

9. The pump apparatus of claim 8, further comprising:

the pump cover, the pump cover lid is located the one end of casing, be equipped with inlet port and oil outlet on the pump cover, the inlet port with the oil outlet with the pump chamber intercommunication.

10. The pump apparatus according to claim 9, wherein the pump portion and the housing enclose a first pressure chamber and a second pressure chamber, the first pressure chamber communicating with the oil outlet hole, the second pressure chamber communicating with the oil inlet hole, the first pressure chamber being subjected to a pressure greater than a pressure to which the second pressure chamber is subjected;

the shell is provided with a second oil groove, the motor cavity is communicated with the second pressure cavity through the second oil groove, and the first pressure cavity is communicated with the motor cavity through the first oil groove.

11. The apparatus as claimed in claim 10, wherein a third pressure chamber is formed between the bearing, the rotating shaft and the pump portion, and a third oil groove is formed in the housing;

the first pressure cavity, the third oil groove, the third pressure cavity, the first oil groove and the motor cavity are communicated in sequence;

the pressure born by the first pressure cavity, the third pressure cavity, the motor cavity and the second pressure cavity is decreased gradually in sequence.

12. The pump apparatus of claim 8, further comprising:

and the electric control part is arranged in the shell and is positioned on one side of the motor part, which deviates from the pump part.

13. A pump arrangement according to any one of claims 7 to 12, wherein the bearing is of unitary construction with the housing.

14. A vehicle, characterized by comprising:

the bearing of any one of claims 1 to 5; or

A pump device according to any one of claims 6 to 13.

Images