Oil pump and vehicle

Abstract

The invention discloses an oil pump and a vehicle, and relates to the technical field of engines, the oil pump comprises a shell, a driving structure, an adjusting structure and a driving wheel, and an oil cavity is formed in the shell; the driving structure comprises a rotor and a driving shaft, the driving shaft comprises a first section and a second section which are sequentially connected in the extending direction of the driving shaft, the first section penetrates through the shell and extends into the oil cavity, the rotor is installed at the first section, the second section extends out of the shell, and a pressure relief cavity is formed in the second section; the adjusting structure comprises a first reset part and a blocking module, the first reset part is contained in the pressure relief cavity, the connecting end of the blocking module is connected with the first reset part, and the free end of the blocking module penetrates through the driving shaft; the first section is sleeved with the driving wheel, and a clamping groove is formed in the driving wheel. Through the design that the driving shaft and the driving wheel are clamped or separated along with the change of the oil pressure in the oil cavity, the oil outlet amount of the oil pump is adjusted in real time, it is guaranteed that the oil outlet amount of the oil pump is not excessive, and oil consumption of an engine is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of engines, and in particular to an oil pump and a vehicle. Background Art

[0002] The engine oil pump draws oil from the oil pan and pumps it to various oil circuits of the engine. The crankshaft drives the oil pump through a chain or belt. In the traditional oil pump drive method, the speed ratio of the crankshaft speed and the oil pump speed is a constant, and the oil flow rate pumped out per revolution of the oil pump (i.e., the oil pump displacement) is also a constant. The oil flow rate pumped out at each speed of the oil pump is equal to the oil pump displacement multiplied by the oil pump speed, so the oil flow rate at each speed of the oil pump is proportional to the engine speed.

[0003] However, the engine's oil flow demand curve does not match the oil flow pumped out by the oil pump, resulting in excessive oil pumping out by the oil pump at medium and high engine speeds, causing high oil pressure in the engine oil channel and the oil pump consuming more power, resulting in increased engine fuel consumption. Summary of the invention

[0004] The main purpose of the present invention is to provide an oil pump and a vehicle, aiming to solve the problem in the prior art that at medium and high engine speeds, the oil pump pumps out excessive oil, resulting in increased engine fuel consumption.

[0005] To achieve the above object, the present invention provides an oil pump, comprising:

[0006] a housing, wherein an oil cavity is formed in the housing;

[0007] A driving structure, the driving structure comprising a rotor and a driving shaft, the driving shaft comprising a first section and a second section connected in sequence along its extension direction, the first section passing through the housing and extending into the oil chamber, the rotor being mounted at the first section, the second section extending out of the housing, a pressure relief chamber being provided in the second section, and an oil passage connecting the oil chamber and the pressure relief chamber being provided on the driving shaft;

[0008] An adjusting structure, the adjusting structure comprising a first reset member and a blocking module, the first reset member being received in the pressure relief chamber, the connecting end of the blocking module being connected to the first reset member, and the free end of the blocking module passing through the driving shaft;

[0009] A driving wheel, the driving wheel is sleeved outside the second section, and a slot is provided on the driving wheel;

[0010] The engine oil entering the oil channel provides a first driving force for the blocking module, and the first reset member provides a second driving force for the blocking module. The blocking module is used to be pushed so that its free end extends into the slot and engages with the slot when the second driving force is greater than the first driving force. The blocking module is also used to be pushed in the opposite direction so that its free end disengages from the slot when the first driving force is greater than the second driving force.

[0011] In one embodiment, the blocking module includes a plunger and a baffle, the plunger is connected to the first reset member, and one end of the plunger connected to the first reset member forms the connecting end, the plunger is disposed in the pressure relief chamber and is in sliding contact with the pressure relief chamber, one end of the baffle is connected to the plunger, and the other end passes through the drive shaft and forms the free end;

[0012] The plunger is used to be pushed when the second driving force is greater than the first driving force, so that it slides in a direction close to the oil channel to drive the free end of the baffle to extend into the slot and engage with the slot; the plunger is also used to be pushed in the opposite direction when the first driving force is greater than the second driving force, so that it slides in a direction away from the oil channel and drives the free end of the baffle to disengage from the slot.

[0013] In one embodiment, the driving wheel is provided with an axial hole, the driving shaft is passed through the axial hole, the slot is located outside the axial hole and communicated with the axial hole, and the shape of the slot is adapted to the shape of the baffle.

[0014] In one embodiment, the plunger extends along the extension direction of the drive shaft, one end of the baffle is rotatably connected to the plunger, and a second reset member is provided on the plunger. The baffle is in an initial state when its free end is engaged with the slot and rotates relative to the plunger to be perpendicular to the plunger. The baffle is in a disengaged state when its free end is disengaged from the slot and rotates relative to the plunger to be inclined to the plunger. The second reset member is used to drive the baffle to adjust from the disengaged state to the initial state when the free end is disengaged from the slot.

[0015] In one embodiment, the plunger is provided with a pin shaft, the pin shaft is rotatably connected to the plunger, the pin shaft is perpendicular to the plunger and perpendicular to the baffle, one end of the baffle is connected to the pin shaft, and the second reset member is a torsion spring sleeved outside the pin shaft, one torsion arm of the torsion spring is fixed to the plunger, and the other torsion arm is fixed to the pin shaft.

[0016] In one embodiment, the pressure relief chamber extends along the extension direction of the drive shaft, the first reset member is a compression spring, an outlet is formed at the connection between the oil passage and the pressure relief chamber, the two ends of the plunger along its extension direction are respectively the connecting end and the abutting end, the abutting end is arranged close to and corresponding to the outlet, one end of the first reset member is connected to the cavity wall of the pressure relief chamber, and the other end is connected to the connecting end of the plunger.

[0017] In one embodiment, the outer wall of the plunger is sealingly matched with the inner wall of the pressure relief chamber via a sealing member.

[0018] In one embodiment, the cavity walls at both ends of the pressure relief cavity along its extension direction are respectively a first limiting wall and a second limiting wall, the first limiting wall is provided with the outlet, and the first limiting wall is used to abut against the abutting end of the plunger, and the second limiting wall is connected to one end of the first reset member.

[0019] In one embodiment, the second section is provided with a first limit member and a second limit member, the first limit member and the second limit member are arranged at intervals along the extension direction of the driving shaft, a limit space is enclosed between the first limit member and the second limit member, the driving wheel is arranged in the limit space, and the two ends of the driving wheel are respectively abutted against the first limit member and the second limit member.

[0020] The present invention also provides a vehicle, wherein the vehicle is equipped with the above-mentioned oil pump.

[0021] The technical solution of the present invention adopts the above-mentioned technical features, and a driving shaft passing through the oil inlet chamber is provided on the housing of the oil pump, and a rotor is installed on the first section of the driving shaft, and the second section of the driving shaft is connected to the driving wheel through an adjusting structure. When it is used at the beginning, since the oil pressure in the oil channel is not high, the first driving force is smaller than the second driving force. At this time, the blocking module is engaged with the card slot, and when the driving wheel rotates, the card slot and the blocking module drive the driving shaft to rotate, and then drive the rotor in the oil chamber to rotate. The rotation provides driving force for the oil in the oil chamber, and the oil pump discharges the oil. As the speed of the driving wheel increases, the speed of the rotor also increases, and the guide wheel The oil pressure in the oil chamber and the oil channel increases until the first driving force provided by the oil in the oil channel to the blocking module is greater than the second driving force, and the oil pressure pushes the blocking module to move until it is out of the slot. At this time, the connection between the driving wheel and the drive shaft is disconnected, and the rotation of the driving wheel cannot be transmitted to the rotor. The rotation speed of the rotor gradually decreases until the first driving force provided by the oil in the oil channel to the blocking module is less than the second driving force. At this time, the second driving force provided by the first reset member drives the blocking module to extend into the slot and engage with the slot, the drive shaft and the driving wheel are reconnected, and the rotor continues to rotate, increasing the oil pressure in the oil chamber. This process is repeated to adjust the oil output of the oil pump.

[0022] The present invention realizes real-time adjustment of the oil output of the oil pump through a design in which the drive shaft and the driving wheel are engaged or disengaged as the oil pressure in the oil chamber changes, thereby ensuring that the oil output of the oil pump is not excessive and the oil pressure in the engine oil channel is not too high, thereby making the oil pump consume less power and reducing the fuel consumption of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 A schematic cross-sectional structure diagram of the blocking module of the oil pump provided by the present invention being engaged with the card slot;

[0025] Figure 2 A schematic cross-sectional structure diagram of the oil pump provided by the present invention in which the blocking module is disengaged from the card slot;

[0026] Figure 3 A schematic diagram of the structure of the oil pump adjustment structure provided by the present invention;

[0027] Figure 4 A schematic front view of a driving wheel of an oil pump provided by the present invention;

[0028] Figure 5 A partial structural schematic diagram of the blocking module of the oil pump provided by the present invention.

[0029] Description of Figure Numbers:

[0030] 100. Oil pump; 1. Housing; 11. Oil chamber; 2. Driving structure; 21. Rotor; 22. Driving shaft; 221. First section; 222. Second section; 23. Pressure relief chamber; 231. Oil channel; 232. Outlet; 233. First limiting wall; 234. Second limiting wall; 24. First limiting member; 25. Second limiting member; 26. Limiting space; 3. Adjusting structure; 31. First reset member; 32. Blocking module; 321. Plunger; 322. Blocking piece; 323. Pin shaft; 324. Second reset member; 4. Driving wheel; 41. Slot; 42. Shaft hole.

[0031] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] In the prior art, the oil flow rate of the oil pump at each speed is proportional to the engine speed. However, the engine's oil flow demand curve does not match the oil flow rate pumped out by the oil pump, resulting in excessive oil pumping out by the oil pump at medium and high engine speeds, causing high oil pressure in the engine oil channel and the oil pump consuming more power, resulting in increased engine fuel consumption.

[0036] In order to solve the above problems, the present invention provides an oil pump 100 .

[0037] See also Figures 1 to 4In one embodiment of the present invention, the oil pump 100 includes a housing 1, a driving structure 2, an adjusting structure 3 and a driving wheel 4. An oil chamber 11 is formed in the housing 1; the driving structure 2 includes a rotor 21 and a driving shaft 22. The driving shaft 22 includes a first section 221 and a second section 222 connected in sequence along its extension direction. The first section 221 passes through the housing 1 and extends into the oil chamber 11. The rotor 21 is installed at the first section 221, and the second section 222 extends out of the housing 1. A pressure relief chamber 23 is provided in the second section 222. An oil passage 231 connecting the oil chamber 11 and the pressure relief chamber 23 is also provided on the driving shaft 22; the adjusting structure 3 includes a first reset member 31 and a blocking module 32. A reset member 31 is accommodated in the pressure relief chamber 23, and the connecting end of the blocking module 32 is connected to the first reset member 31, and the free end of the blocking module 32 passes through the drive shaft 22; the driving wheel 4 is sleeved outside the second section 222, and a slot 41 is provided on the driving wheel 4. The oil entering the oil channel 231 provides a first driving force for the blocking module 32, and the first reset member 31 provides a second driving force for the blocking module 32. The blocking module 32 is used to be pushed when the second driving force is greater than the first driving force so that its free end extends into the slot 41 and engages with the slot 41. The blocking module 32 is also used to be pushed in the opposite direction when the first driving force is greater than the second driving force so that its free end is separated from the slot 41.

[0038] The technical solution of the present invention adopts the above-mentioned technical features, and a driving shaft 22 penetrating the oil inlet chamber 11 is provided on the housing 1 of the oil pump 100, and a rotor 21 is installed on the first section 221 of the driving shaft 22, and the second section 222 of the driving shaft 22 is connected to the driving wheel 4 through the adjustment structure 3. When it is used at the beginning, since the oil pressure in the oil passage 231 is not high, the first driving force is less than the second driving force. At this time, the blocking module 32 is engaged with the card slot 41. When the driving wheel 4 rotates, the card slot 41 drives the driving shaft 22 to rotate through the blocking module 32, and then drives the rotor 21 located in the oil chamber 11 to rotate. The rotation provides driving force for the oil in the oil chamber 11, and the oil pump 100 discharges the oil. As the speed of the driving wheel 4 increases, the speed of the rotor 21 also increases. This causes the oil pressure in the oil chamber 11 and the oil channel 231 to increase until the first driving force provided by the oil in the oil channel 231 to the blocking module 32 is greater than the second driving force, and the oil pressure pushes the blocking module 32 to move until it disengages from the slot 41. At this time, the connection between the driving wheel 4 and the drive shaft 22 is disconnected, and the rotation of the driving wheel 4 cannot be transmitted to the rotor 21. The rotation speed of the rotor 21 gradually decreases until the first driving force provided by the oil in the oil channel 231 to the blocking module 32 is less than the second driving force. At this time, the second driving force provided by the first reset member 31 drives the blocking module 32 to extend into the slot 41 and engage with the slot 41, the drive shaft 22 is reconnected to the driving wheel 4, and the rotor 21 continues to rotate, thereby increasing the oil pressure in the oil chamber 11. This process is repeated to adjust the oil output of the oil pump 100.

[0039] It should be noted that when the rotation speed of the driving wheel 4 remains unchanged, it will enter a state where the first driving force is equal to the second driving force. If the blocking module 32 is engaged with the slot 41 at this time, the engaged state will be maintained until the engine speed increases, causing the oil pressure in the oil chamber 11 to increase, resulting in an increase in the first driving force; if the first driving force is equal to the second driving force, the blocking module 32 will be disengaged from the slot 41, and this state will not last too long, because as the oil in the oil chamber 11 is discharged, the oil pressure decreases, and the second driving force is greater than the first driving force at this time, and the blocking module 32 will return to the state of being engaged with the slot 41.

[0040] The present application realizes real-time adjustment of the oil output of the oil pump 100 through a design in which the drive shaft 22 and the driving wheel 4 are engaged or disengaged as the oil pressure in the oil chamber 11 changes, thereby ensuring that the oil output of the oil pump 100 is not excessive and the oil pressure in the engine oil channel 231 is not too high, thereby allowing the oil pump 100 to consume less power and reducing the fuel consumption of the engine.

[0041] Further, the blocking module 32 includes a plunger 321 and a baffle 322. The plunger 321 is connected to the first reset member 31, and one end of the plunger 321 connected to the first reset member 31 forms a connection end. The plunger 321 is movably disposed in the pressure relief chamber 23 and is in sliding contact with the pressure relief chamber 23. One end of the baffle 322 is connected to the plunger 321, and the other end is used to pass through the drive shaft 22 and form a free end.

[0042] The plunger 321 is used to be pushed when the second driving force is greater than the first driving force, so that it slides in the direction close to the oil passage 231 to drive the free end of the baffle 422 to extend into the slot 41 and engage with the slot 41; the plunger 321 is also used to be pushed in the opposite direction when the first driving force is greater than the second driving force, so that it slides in the direction away from the oil passage 231 and drives the free end of the baffle 422 to disengage from the slot 41. The plunger 321 is respectively arranged corresponding to the oil passage 231 and the first reset member 31, so that the first driving force provided by the oil passage 231 and the second driving force provided by the first reset member 31 can drive the plunger 321 to slide in the pressure relief chamber 23, so that the movement of the plunger 321 drives the baffle 322 to extend into the slot 41 or disengage from the slot 41, thereby converting the change of oil pressure into the change of the connection relationship between the drive shaft 22 and the driving wheel 4, and realizing the real-time regulation of the oil pressure in the oil chamber 11.

[0043] like Figure 1As shown in the orientation in the figure, it should be noted that, in a specific embodiment, the sliding direction of the plunger 321 is the same as the extension direction of the drive shaft 22, both of which are left and right directions. At this time, the baffle 322 needs to be set vertically with the plunger 321 (the baffle 322 is set in the up and down direction), and the moving direction of the baffle 322 relative to the slot 41 is the same as the extension direction of the drive shaft 22, that is, the baffle 322 moves in the left and right direction, so that the baffle 322 is taken out of the slot 41 or the baffle is moved in by the sliding of the plunger 321. 322 is brought into the slot 41; in another specific embodiment, the sliding direction (up and down direction) of the plunger 321 is perpendicular to the extension direction (left and right direction) of the drive shaft 22, the extension direction of the baffle 322 is the same as the sliding direction of the plunger 321, and the moving direction (up and down direction) of the baffle 322 relative to the slot 41 is perpendicular to the extension direction (left and right direction) of the drive shaft 22, so that the sliding of the plunger 321 can bring the baffle 322 out of the slot 41 or bring the baffle 322 into the slot 41.

[0044] In one embodiment, the driving wheel 4 is provided with an axial hole 42, the driving shaft 22 is passed through the axial hole 42, the clamping slot 41 is located outside the axial hole 42 and communicates with the axial hole 42, and the shape of the clamping slot 41 is adapted to the shape of the baffle 322. The shape of the clamping slot 41 is adapted to the shape of the baffle 322, so that the clamping relationship between the baffle 322 and the clamping slot 41 is more closely connected, and the driving wheel 4 drives the driving shaft 22 to rotate more stably, thereby improving the stability of the rotation.

[0045] In one embodiment, the plunger 321 extends along the extension direction of the drive shaft 22, one end of the baffle 322 is rotatably connected to the plunger 321, and a second reset member 324 is provided on the plunger 321. The baffle 322 is in an initial state when its free end is engaged with the slot 41 and rotates relative to the plunger 321 to be perpendicular to the plunger 321. The baffle 322 is in a disengaged state when its free end is disengaged from the slot 41 and rotates relative to the plunger 321 to be inclined to the plunger 321. The second reset member 324 is used to drive the baffle 322 to adjust from the disengaged state to the initial state when the free end is disengaged from the slot 41. The baffle 322 is rotationally connected to the plunger 321. When the first driving force is greater than the second driving force, the plunger 321 moves in a direction away from the oil chamber 11, thereby driving the baffle 322 to move in a direction away from the oil chamber 11. At this time, the baffle 322 is blocked by the side wall of the pressure relief chamber 23, so that the baffle 322 cannot continue to move horizontally. The side wall of the pressure relief chamber 23 provides a thrust to the baffle 322 in the opposite direction of the movement of the plunger 321, so that the baffle 322 tilts toward the oil chamber 11, thereby causing the baffle 322 to disengage from the slot 41. By designing the rotating structure, the volume of the blocking module 32 can be reduced, and the opening area on the side wall of the pressure relief hole can be reduced.

[0046] Optionally, a protrusion is provided on the plunger 321, and a limiting groove cooperating with the protrusion is provided on the side wall of the pressure relief chamber 23, so that the plunger 321 can only slide along the extension direction of the pressure relief chamber 23, but cannot rotate relative to the pressure relief chamber 23, thereby improving the stability of the baffle 322; it can be understood that a limiting groove may be provided on the plunger 321, and a protrusion may be provided on the side wall of the pressure relief chamber 23, as long as the function of limiting the rotation of the plunger 321 can be played.

[0047] Please combine Figure 1 , Figure 3 and Figure 5 Furthermore, the plunger 321 is provided with a pin 323, the pin 323 is perpendicular to the plunger 321 and the baffle 322, one end of the plunger 321 is connected to the pin 323, and the second reset member 324 is a torsion spring sleeved outside the pin 323, one torsion arm of the torsion spring is fixed to the plunger 321, and the other torsion arm is fixed to the pin 323. Through the arrangement of the pin 323 and the second reset member 324, the baffle 322 can be rotatably mounted on the plunger 321, and when the second restoring force is greater than the first restoring force and the plunger 321 moves toward the oil chamber 11, the second reset member 324 can quickly drive the baffle 322 to rotate to the initial position, so that the baffle 322 can quickly cooperate with the slot 41 to restore the rotation of the rotor 21, provide sufficient oil pressure and oil supply, improve the response speed, and ensure sufficient and stable oil supply to the engine.

[0048] In one embodiment, the pressure relief chamber 23 extends along the extension direction of the drive shaft 22, the first reset member 31 is a compression spring, an outlet 232 is formed at the connection between the oil passage 231 and the pressure relief chamber 23, and the two ends of the plunger 321 along its extension direction are respectively a connecting end and an abutting end, the abutting end is arranged close to and corresponding to the outlet 232, one end of the first reset member 31 is connected to the cavity wall of the pressure relief chamber 23, and the other end is connected to the connecting end of the plunger 321. The first reset member 31 and the outlet 232 of the oil passage 231 are arranged on both sides of the plunger 321, so that the first driving force and the second driving force can act symmetrically on the plunger 321, which can ensure the symmetry and balance of the force on the plunger 321, and the structure is simple and stable.

[0049] Specifically, the outer wall of the plunger 321 is sealed with the inner wall of the pressure relief chamber 23 through a seal. The outer wall of the plunger 321 and the inner wall of the pressure relief chamber 23 are sealed by the seal, ensuring that the oil entering the pressure relief chamber 23 through the oil passage 231 will not leak, avoiding the waste of oil and improving the sealing and stability of the pressure relief chamber 23.

[0050] In one embodiment, the two end walls of the pressure relief chamber 23 along the extension direction thereof are respectively the first limiting wall 233 and the second limiting wall 234, the first limiting wall 233 is provided with an outlet 232, and the first limiting wall 233 is used to abut against the abutting end of the plunger 321, and the second limiting wall is connected to one end of the first reset member 31. The first limiting wall 233 abuts against the side of the plunger 321 away from the first reset member 31, and the outlet 232 is provided on the first limiting wall 233, that is, the size of the oil passage 231 is smaller than the size of the pressure relief chamber 23, preventing the plunger 321 from extending into and falling into the oil chamber 11 under the push of the first reset member 31, thereby ensuring the stability and safety of the adjustment structure 3.

[0051] In one embodiment, the second section 222 is provided with a first stopper 24 and a second stopper 25 arranged at intervals, the first stopper 24 and the second stopper 25 are arranged at intervals along the extension direction of the drive shaft 22, and a stopper space 26 is formed between the first stopper 24 and the second stopper 25, the driving wheel 4 is arranged in the stopper space 26, and the two ends of the driving wheel 4 are respectively abutted against the first stopper 24 and the second stopper 25. The driving wheel 4 is limited by the first stopper 24 and the second stopper 25, so as to prevent the driving wheel 4 from being separated from the drive shaft 22 during the rotation process, thereby ensuring the overall stability of the oil pump 100.

[0052] Specifically, the first limiter 24 is arranged close to the oil chamber 11, and the second limiter 25 is located at the end of the driving shaft 22 away from the oil chamber 11. The second limiter 25 can be a nut, so that the tightness can be adjusted according to the size of the driving wheel 4 to improve stability.

[0053] The present invention also provides a vehicle, which is applied with the above-mentioned oil pump 100. The specific structure of the oil pump 100 refers to the above-mentioned embodiment. Since the present vehicle adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0054] The above are only exemplary embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. An oil pump, It is characterized in that include: a housing, wherein an oil cavity is formed in the housing; A driving structure, the driving structure comprising a rotor and a driving shaft, the driving shaft comprising a first section and a second section connected in sequence along its extension direction, the first section passing through the housing and extending into the oil chamber, the rotor being mounted at the first section, the second section extending out of the housing, a pressure relief chamber being provided in the second section, and an oil passage connecting the oil chamber and the pressure relief chamber being provided on the driving shaft; An adjusting structure, the adjusting structure comprising a first reset member and a blocking module, the first reset member being received in the pressure relief chamber, the connecting end of the blocking module being connected to the first reset member, and the free end of the blocking module passing through the driving shaft; A driving wheel, the driving wheel is sleeved outside the second section, and a slot is provided on the driving wheel; The engine oil entering the oil channel provides a first driving force for the blocking module, and the first reset member provides a second driving force for the blocking module. The blocking module is used to be pushed so that its free end extends into the slot and engages with the slot when the second driving force is greater than the first driving force. The blocking module is also used to be pushed in the opposite direction so that its free end disengages from the slot when the first driving force is greater than the second driving force.

2. The oil pump according to claim 1, It is characterized in that The blocking module includes a plunger and a baffle, the plunger is connected to the first reset member, and one end of the plunger connected to the first reset member forms the connecting end, the plunger is disposed in the pressure relief chamber and is in sliding contact with the pressure relief chamber, one end of the baffle is connected to the plunger, and the other end passes through the drive shaft and forms the free end; The plunger is used to be pushed when the second driving force is greater than the first driving force, so that it slides in a direction close to the oil channel to drive the free end of the baffle to extend into the slot and engage with the slot; the plunger is also used to be pushed in the opposite direction when the first driving force is greater than the second driving force, so that it slides in a direction away from the oil channel and drives the free end of the baffle to disengage from the slot.

3. The oil pump according to claim 2, It is characterized in that The driving wheel is provided with an axial hole, the driving shaft is passed through the axial hole, the clamping groove is located outside the axial hole and communicated with the axial hole, and the shape of the clamping groove is adapted to the shape of the blocking piece.

4. The oil pump according to claim 2, It is characterized in that The plunger extends along the extension direction of the drive shaft, one end of the baffle is rotatably connected to the plunger, and a second reset member is provided on the plunger. The baffle is in an initial state when its free end is engaged with the slot and rotates relative to the plunger to be perpendicular to the plunger. The baffle is in a disengaged state when its free end is disengaged from the slot and rotates relative to the plunger to be inclined to the plunger. The second reset member is used to drive the baffle to adjust from the disengaged state to the initial state when the free end is disengaged from the slot.

5. The oil pump according to claim 4, It is characterized in that The plunger is provided with a pin shaft, the pin shaft is rotatably connected to the plunger, the pin shaft is perpendicular to the plunger and perpendicular to the baffle, one end of the baffle is connected to the pin shaft, and the second reset member is a torsion spring sleeved outside the pin shaft, one torsion arm of the torsion spring is fixed to the plunger, and the other torsion arm is fixed to the pin shaft.

6. The oil pump according to claim 2, It is characterized in that The pressure relief chamber extends along the extension direction of the drive shaft, the first reset member is a compression spring, an outlet is formed at the connection between the oil passage and the pressure relief chamber, the two ends of the plunger along its extension direction are respectively the connecting end and the abutting end, the abutting end is arranged close to and corresponding to the outlet, one end of the first reset member is connected to the cavity wall of the pressure relief chamber, and the other end is connected to the connecting end of the plunger.

7. The oil pump according to claim 6, It is characterized in that The outer wall of the plunger is sealed and matched with the inner wall of the pressure relief chamber through a sealing member.

8. The oil pump according to claim 6, It is characterized in that The cavity walls at both ends of the pressure relief cavity along its extension direction are respectively a first limiting wall and a second limiting wall. The first limiting wall is provided with the outlet, and the first limiting wall is used to abut against the abutting end of the plunger. The second limiting wall is connected to one end of the first reset member.

9. The oil pump according to any one of claims 1 to 8, It is characterized in that The second section is provided with a first limit member and a second limit member, the first limit member and the second limit member are arranged at intervals along the extension direction of the driving shaft, a limit space is surrounded by the first limit member and the second limit member, the driving wheel is arranged in the limit space, and the two ends of the driving wheel are respectively abutted against the first limit member and the second limit member.

10. A vehicle, It is characterized in that The vehicle is applied with the oil pump according to any one of claims 1 to 9.

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