Oil pump motor for automobile

Abstract

This invention discloses an automotive oil pump motor, comprising a housing, an end cover, a motor shaft, and a gear set. A cooling oil passage extending circumferentially along the surface of one end of the housing facing the end cover is provided. An adjustment component is also provided on the end cover. The oil suction port is selectively connected to both the cooling oil passage inlet and the oil suction chamber inlet via the adjustment component. When the motor shaft is at a low speed and generates relatively little heat, the adjustment component can connect the oil suction port to the oil suction chamber inlet while disconnecting it from the cooling oil passage inlet. This allows the motor to be cooled by air cooling, preventing oil from entering the housing and causing oil resistance, thus avoiding any impact on motor power consumption. When the motor shaft is at a high speed and generates significant heat, the adjustment component can connect the oil suction port to the cooling oil passage inlet to ensure effective motor cooling.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to an automotive oil pump motor. Background Technology

[0002] With the development of industrial automation and mechatronics, oil pump motors are widely used in mining, engineering, injection molding, and pressure machinery fields as a power source, utilizing the oil pressure output by oil pumps. As the driving mechanism of oil pumps, oil pump motors are indispensable. Currently used oil pump motors are cooled by both air cooling and oil cooling. However, at low speeds, the heat generated by the oil pump motor is not significant. If air cooling and oil cooling are used at this time, the cooling effect will not be significantly improved. On the contrary, the self-cooling structure increases the oil passage path and generates oil resistance, causing the motor to generate additional power consumption.

[0003] Therefore, in existing automotive oil pump motors, the coolant can affect the motor's power consumption at low speeds. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that in the prior art, the coolant affects the power consumption of the oil pump motor in automobiles at low speeds.

[0005] To address the aforementioned problems, an embodiment of the present invention discloses an automotive oil pump motor, comprising a housing, an end cover, a motor shaft, and a gear set; wherein, the end cover is fixed to one end of the housing, the motor shaft and the gear set are both disposed within the housing, the gear set is drively connected to the power output end of the motor shaft, and the gear set is located near the one end of the housing; and

[0006] The housing has an oil suction chamber and an oil outlet chamber inside one end. The gear set is located between the oil suction chamber and the oil outlet chamber. The oil pressure difference between the oil outlet chamber and the oil suction chamber is adjusted by the motor shaft linking the gear set. The end cover has an oil suction port and an oil outlet. The end cover also has an oil suction inlet communicating with the oil suction chamber, and an oil outlet communicating with the oil outlet chamber. The oil outlet is also connected to the oil outlet.

[0007] A cooling oil channel extending circumferentially along the surface of the housing facing the end cap is provided at one end of the housing. The cooling oil channel has a cooling oil channel inlet and a cooling oil channel outlet, and the cooling oil channel outlet communicates with the oil suction chamber. Furthermore, the end cap is also provided with an adjustment assembly, through which the oil suction port selectively communicates with both the cooling oil channel inlet and the oil suction chamber inlet.

[0008] When the rotational speed of the motor shaft is less than a preset first speed threshold, the adjustment component is in a first position state, the oil suction port is connected to the oil suction chamber inlet through the adjustment component, and the oil suction port is not connected to the cooling oil passage inlet, so that the oil entering from the oil suction port enters the oil suction chamber through the oil suction chamber inlet;

[0009] When the rotational speed of the motor shaft is greater than the preset second speed threshold, the adjustment component is in the second position state, the oil suction port is connected to the cooling oil passage inlet through the adjustment component, and the oil suction port is not connected to the oil suction chamber inlet, so that the oil entering from the oil suction port sequentially enters the oil suction chamber through the cooling oil passage inlet, the cooling oil passage, and the cooling oil passage outlet;

[0010] Wherein, the second speed threshold is greater than the first speed threshold.

[0011] Using the above technical solution, the oil pump motor provided in this embodiment has an adjustment component on the end cover. The oil suction port is selectively connected to the cooling oil passage inlet and the oil suction chamber inlet through the adjustment component. When the motor shaft is at a low speed and the heat generated is small, the adjustment component can adjust the oil suction port to be connected to the oil suction chamber inlet and disconnect the cooling oil passage inlet. At this time, the motor can be cooled by air cooling, and the oil will not enter the housing and cause oil resistance to the motor, thereby avoiding the impact on the motor power consumption. When the motor shaft is at a high speed and the heat generated is large, the adjustment component can adjust the oil suction port to be connected to the cooling oil passage inlet. At this time, the motor can be cooled by air cooling, and at the same time, the oil will also enter the housing to cool the motor, so as to use air cooling and oil cooling to cool the motor.

[0012] According to another embodiment of the present invention, an automotive oil pump motor is provided at the end cap, wherein the oil suction port, the oil outlet, the oil suction chamber inlet, the oil outlet chamber outlet, and the cooling oil passage inlet are respectively connected to the adjustment channel, and the oil outlet chamber outlet is connected to the oil outlet through the adjustment channel; the adjustment assembly includes a valve core and an elastic component, the valve core is slidably connected within the adjustment channel, the elastic component is connected between one end of the valve core and the inner wall surface of the adjustment channel, the valve core has a first sealing portion, a rod portion, and a second sealing portion spaced apart along the length direction of the valve core, and an annular gap is formed between the rod portion and the inner wall surface of the adjustment channel; wherein...

[0013] When the adjusting component is in the first position, the oil pressure difference between the oil outlet chamber and the oil suction chamber is less than the elastic force of the elastic component. Under the action of the elastic force of the elastic component, the first sealing part of the valve core is sealed to the inner wall of the adjusting channel and is located between the oil suction chamber inlet and the oil outlet. The second sealing part is sealed to the inner wall of the adjusting channel and is located between the oil suction port and the cooling oil passage inlet, so as to close the cooling oil passage inlet so that the oil suction port and the cooling oil passage inlet are not connected. Furthermore, the oil suction port is connected to the oil suction chamber inlet through the annular gap.

[0014] When the adjusting component switches from the first position state to the second position state, the oil pressure difference between the oil outlet chamber and the oil suction chamber is greater than the elastic force of the elastic component. Under the action of oil pressure at the oil outlet of the oil outlet, the valve core overcomes the elastic force of the elastic component and moves towards the position close to the oil suction chamber inlet. The first sealing part of the valve core is sealed to the inner wall of the adjusting channel and is located between the oil suction port and the oil suction chamber inlet. The second sealing part is sealed to the inner wall of the adjusting channel and is located between the cooling oil passage inlet and the inner wall of the adjusting channel, so as to close the oil suction chamber inlet so that the oil suction port is not connected to the oil suction chamber inlet. Furthermore, the oil suction port is connected to the cooling oil passage inlet through the annular gap.

[0015] The above technical solution includes an adjustment channel at the end cap, which connects the oil suction port, oil outlet, oil suction chamber inlet, oil outlet, and cooling oil passage inlet to the adjustment channel. A valve core and elastic component are installed in the adjustment channel. The valve core can be moved to a first position or a second position in the adjustment channel by the oil pressure and the elastic force of the elastic component, thereby switching between the oil suction port, oil suction chamber inlet, and cooling oil passage inlet. This structure can be achieved by slightly modifying the end cap, and it not only has the advantages of simple structure but also reliable performance.

[0016] According to another embodiment of the present invention, the elastic component of the automotive oil pump motor is configured as a spring, which abuts against the second sealing portion of the valve core and the inner wall surface of the adjustment channel near the oil suction chamber inlet.

[0017] According to another embodiment of the present invention, the valve core of the automotive oil pump motor is configured as a "dumbbell-shaped" structure, and a blind cavity is formed in the adjustment channel near the oil suction port, and the spring is at least partially placed in the blind cavity.

[0018] According to another embodiment of the present invention, the cooling oil passage of the automotive oil pump motor is configured as follows: an annular cavity formed at one end of the housing and extending circumferentially along the housing, wherein a plurality of spacers extending axially along the housing are spaced apart in the annular cavity, the plurality of spacers dividing the annular cavity into a plurality of cavities extending axially along the housing, and adjacent cavities are interconnected.

[0019] By adopting the above technical solution, this embodiment can make the cooling oil passage have more contact time and a larger contact area with the motor rotor when it enters the cooling oil passage. The setting of this structure can further ensure that the motor shaft has a better cooling effect when rotating at high speed.

[0020] According to another embodiment of the present invention, the annular cavity of the automotive oil pump motor has a "C-shaped" structure on a plane perpendicular to the length direction of the housing.

[0021] Each of the spacers has a through hole, allowing two adjacent cavities to communicate through the through hole; and,

[0022] The through holes on two adjacent spacers are staggered along the length of the spacers.

[0023] By adopting the above technical solution, the annular cavity is configured in a "C-shape" on a plane perpendicular to the length direction of the housing, ensuring the assemblability of the motor shaft, gear set, and housing. Furthermore, by offsetting the through holes on the spacer bars along their length, this structural design allows the cooling oil to circulate along the length of the housing when entering the cooling oil passages, further improving the cooling effect of the motor shaft during high-speed rotation.

[0024] According to another embodiment of the present invention, an automotive oil pump motor is provided with at least seven spacers, and the through holes on two adjacent spacers are located at the ends of the two adjacent spacers that are far apart from each other.

[0025] By adopting the above technical solution, by placing the through holes on the two adjacent spacers at their ends that are far apart from each other, the effective flow length of the cooling oil in the length direction of the cavity can be longer when it enters the cooling oil passage, thereby further improving the cooling effect of the motor shaft when it rotates at high speed.

[0026] According to another embodiment of the present invention, an automotive oil pump motor is provided with a one-way valve at the outlet of the cooling oil passage to restrict the oil in the suction chamber from entering the outlet of the cooling oil passage.

[0027] By adopting the above technical solution, the one-way valve at the outlet of the cooling oil passage can prevent the oil in the oil suction chamber from flowing back from the outlet of the cooling oil passage into the cooling oil flow passage, which would cause damping to the rotation of the motor rotor. Therefore, the energy loss can be further reduced and the working efficiency of the motor can be improved by setting this structure.

[0028] According to another embodiment of the present invention, a sealing strip is provided between the housing and the end cover of the automotive oil pump motor, and an oil seal is provided between the motor shaft and the gear set inside the housing.

[0029] By adopting the above technical solution, the sealing strip between the housing and the end cover can reduce the probability of oil leakage in the oil pump motor. The oil seal can prevent oil convection between the motor shaft cavity and the gear set cavity, which would affect the working performance of the oil pump motor.

[0030] According to another embodiment of the present invention, the automotive oil pump motor further includes a control component disposed at one end of the housing away from the end cover, and the housing of the control component and the housing of the automotive oil pump motor are assembled into an integral structure.

[0031] By adopting the above technical solution, the housing of the control component and the housing of the automotive oil pump motor are assembled into an integrated structure, which can ensure the structural stability of the oil pump motor.

[0032] Other features and corresponding beneficial effects of the present invention will be described in the latter part of the specification, and it should be understood that at least some of the beneficial effects will become obvious from the description in the specification. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of an oil pump motor without an end cover provided in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the 45° isometric structure of the oil pump motor provided in an embodiment of the present invention;

[0035] Figure 3 A cross-sectional view of the oil pump motor provided in an embodiment of the present invention;

[0036] Figure 4 This is a bottom view of the oil pump motor provided in an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the structure of the spacer bar in the oil pump motor provided in an embodiment of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100. Shell;

[0040] 110. Oil suction chamber;

[0041] 120. Oil outlet chamber;

[0042] 130. Cooling oil passages;

[0043] 131. Spacer bar; 131A. Through hole; 132. Chamber; 133. Cooling oil passage inlet; 134. Cooling oil passage outlet;

[0044] 200. End cap;

[0045] 210. Oil suction port;

[0046] 220. Oil outlet;

[0047] 230. Oil suction chamber inlet;

[0048] 240. Oil outlet chamber;

[0049] 250. Adjust the channel;

[0050] 251. Blind cavity;

[0051] 300. Motor shaft;

[0052] 400. Gear set;

[0053] 500. Adjustment components;

[0054] 510. Valve core;

[0055] 511. First sealing part; 512. Rod part; 513. Second sealing part; 51A. Annular gap;

[0056] 520. Elastic components;

[0057] 600. Sealing strip;

[0058] 700, oil seal;

[0059] 800. Control components. Detailed Implementation

[0060] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention is presented in conjunction with preferred embodiments, this does not mean that the features of the invention are limited to these embodiments. On the contrary, the purpose of describing the invention in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of the present invention. To provide a deep understanding of the invention, many specific details will be included in the following description. The invention may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of the invention, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0061] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0062] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in during use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0063] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0064] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0065] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0066] Embodiments of the present invention provide an automotive oil pump motor, such as... Figures 1-4As shown, it includes a housing 100, an end cover 200, a motor shaft 300, and a gear set 400; wherein, the end cover 200 is fixed to one end of the housing 100, the motor shaft 300 and the gear set 400 are both disposed inside the housing 100, and the gear set 400 is connected to the power output end of the motor shaft 300, at a position close to the end of the housing 100.

[0067] Furthermore, one end of the housing 100 has an oil suction chamber 110 and an oil outlet chamber 120. A gear set 400 is located between the oil suction chamber 110 and the oil outlet chamber 120. The oil pressure difference between the oil outlet chamber 120 and the oil suction chamber 110 is adjusted by the linkage of the gear set 400 and the motor shaft 300. The end cover 200 is provided with an oil suction port 210 and an oil outlet 220. The oil suction port 210 and the oil outlet 220 are mainly used to connect the gearbox housing. The end cover 200 is also provided with an oil suction inlet 230 communicating with the oil suction chamber 110 and an oil outlet 240 communicating with the oil outlet chamber 120. The oil outlet 240 is also connected to the oil outlet 220.

[0068] Furthermore, a cooling oil passage 130 extending circumferentially along the surface of the housing 100 facing the end cover 200 is provided on one end of the housing 100. The cooling oil passage 130 has a cooling oil passage inlet 133 and a cooling oil passage outlet 134, and the cooling oil passage outlet 134 is connected to the oil suction chamber 110. In addition, an adjustment component 500 is also provided on the end cover 200, and the oil suction port 210 is selectively connected to the cooling oil passage inlet 133 and the oil suction chamber inlet 230 through the adjustment component 500.

[0069] Specifically, in this embodiment, when the rotational speed of the motor shaft 300 is less than the preset first speed threshold, the adjustment component 500 is in the first position state, and the oil suction port 210 is connected to the oil suction chamber inlet 230 through the adjustment component 500 and is not connected to the cooling oil passage inlet 133, so that the oil entering from the oil suction port 210 enters the oil suction chamber 110 through the oil suction chamber inlet 230.

[0070] When the rotational speed of the motor shaft 300 is greater than the preset second speed threshold, the adjustment component 500 is in the second position state. The oil suction port 210 is connected to the cooling oil passage inlet 133 through the adjustment component 500 and is not connected to the oil suction chamber inlet 230, so that the oil entering from the oil suction port 210 sequentially passes through the cooling oil passage inlet 133, the cooling oil passage 130, and the cooling oil passage outlet 134 into the oil suction chamber 110; wherein, the second speed threshold is greater than the first speed threshold.

[0071] More specifically, in this embodiment, the first speed threshold can be set to 100 r / min-200 r / min, and the second speed threshold can be set to 800 r / min. This embodiment only shows one example; specifically, the values ​​of the first and second speed thresholds depend on the model of the oil pump motor, and this embodiment does not limit this to a single value.

[0072] More specifically, the oil pump motor provided in this embodiment has an adjustment component 500 on the end cover 200. The oil suction port 210 is selectively connected to the cooling oil passage inlet 133 and the oil suction chamber inlet 230 through the adjustment component 500. When the motor shaft 300 is at a low speed and the heat generated is small, the adjustment component 500 can adjust the oil suction port 210 to be connected to the oil suction chamber inlet 230 and the cooling oil passage inlet 133 to be disconnected. At this time, the motor can be cooled by air cooling, and the oil will not enter the housing 100 to generate oil resistance to the motor, thereby avoiding the impact on the power consumption of the motor. When the motor shaft 300 is at a high speed and the heat generated is large, the adjustment component 500 can adjust the oil suction port 210 to be connected to the cooling oil passage inlet 133. At this time, the motor can be cooled by air cooling, and at the same time, the oil will also enter the housing 100 to cool the motor, so as to use air cooling and oil cooling to cool the motor.

[0073] According to another embodiment of the present invention, such as Figures 2-4 As shown, an adjustment channel 250 is provided at the end cap 200. The oil suction port 210, oil outlet 220, oil suction chamber inlet 230, oil outlet chamber outlet 240 and cooling oil passage inlet 133 are respectively connected to the adjustment channel 250, and the oil outlet chamber outlet 240 is connected to the oil outlet 220 through the adjustment channel 250. The adjustment assembly 500 includes a valve core 510 and an elastic component 520. The valve core 510 is slidably connected in the adjustment channel 250. The elastic component 520 is connected between one end of the valve core 510 and the inner wall surface of the adjustment channel 250. The valve core 510 has a first sealing part 511, a rod part 512 and a second sealing part 513 arranged at intervals along the length direction of the valve core 510. An annular gap 51A is formed between the rod part 512 and the inner wall surface of the adjustment channel 250.

[0074] Specifically, in this embodiment, when the regulating component 500 is in the first position, the oil pressure difference between the oil outlet chamber 120 and the oil suction chamber 110 is less than the elastic force of the elastic component 520. Under the action of the elastic force of the elastic component 520, the first sealing part 511 of the valve core 510 is sealed to the inner wall surface of the regulating channel 250 and is located between the oil suction chamber inlet 230 and the oil outlet chamber outlet 240. The second sealing part 513 is sealed to the inner wall surface of the regulating channel 250 and is located between the oil suction port 210 and the cooling oil passage inlet 133, so as to close the cooling oil passage inlet 133 so that the oil suction port 210 and the cooling oil passage inlet 133 are not connected. Furthermore, the oil suction port 210 is connected to the oil suction chamber inlet 230 through the annular gap 51A.

[0075] When the regulating component 500 switches from the first position state to the second position state, the oil pressure difference between the oil outlet chamber 120 and the oil suction chamber 110 is greater than the elastic force of the elastic component 520. Under the action of the oil pressure at the oil outlet 240, the valve core 510 overcomes the elastic force of the elastic component 520 and moves towards the position close to the oil suction chamber inlet 230. The first sealing part 511 of the valve core 510 is sealed to the inner wall surface of the regulating channel 250 and is located between the oil suction port 210 and the oil suction chamber inlet 230. The second sealing part 513 is sealed to the inner wall surface of the regulating channel 250 and is located between the cooling oil passage inlet 133 and the inner wall surface of the regulating channel 250, so as to close the oil suction chamber inlet 230 and prevent the oil suction port 210 from communicating with the oil suction chamber inlet 230. Furthermore, the oil suction port 210 is connected to the cooling oil passage inlet 133 through the annular gap 51A.

[0076] More specifically, in this embodiment, an adjustment channel 250 is provided at the end cap 200. The oil suction port 210, oil outlet 220, oil suction chamber inlet 230, oil outlet chamber outlet 240, and cooling oil passage inlet 133 are respectively connected to the adjustment channel 250. A valve core 510 and an elastic component 520 are provided in the adjustment channel 250. Through oil pressure and the elastic force of the elastic component 520, the valve core 510 can be moved to a first position or a second position in the adjustment channel 250 to achieve switching between the oil suction port 210, the oil suction chamber inlet 230, and the cooling oil passage inlet 133. This structure can be achieved by slightly modifying the end cap 200. It not only has a simple structure but also has the advantage of reliable performance.

[0077] Furthermore, in this embodiment, the structural dimensions of the valve core 510 and the parameters of the elastic component 520 are determined by the flow rate and speed characteristics of the oil pump motor, and this embodiment does not limit this.

[0078] According to another embodiment of the present invention, such as Figure 4As shown, the elastic component 520 is configured as a spring, which abuts against the second sealing part 513 of the valve core 510 and the inner wall surface of the regulating channel 250 near the oil suction chamber inlet 230.

[0079] Furthermore, the spring may have one end abutting against the second sealing part 513 and the other end engaging with the inner wall surface of the adjustment channel 250 near the oil suction chamber inlet 230 (i.e., the right end of the adjustment channel 250 in the figure). Alternatively, both ends of the spring may be engaging with the second sealing part 513 and the inner wall surface of the adjustment channel 250 near the oil suction chamber inlet 230. The specific design can be set according to actual design and usage requirements, and this embodiment does not impose a unique limitation on this.

[0080] According to another embodiment of the present invention, the valve core 510 is configured as a "dumbbell-shaped" structure, and a blind cavity 251 is formed in the adjustment channel 250 near the oil suction port 210, and the spring is at least partially placed in the blind cavity 251.

[0081] Specifically, in this embodiment, one-half or one-third of the spring can be placed in the blind cavity 251, or the spring can be completely located in the blind cavity 251 in its natural initial state. The specific design can be set according to actual design and usage requirements, and this embodiment does not limit it to a single option.

[0082] According to another embodiment of the present invention, such as Figures 1-3 As shown, the cooling oil passage 130 is configured as follows: an annular cavity formed at one end of the housing 100 and extending circumferentially along the housing 100, a plurality of spacers 131 extending axially along the housing 100 are spaced apart in the annular cavity, the plurality of spacers 131 divide the annular cavity into a plurality of partitions 132 extending axially along the housing 100, and adjacent partitions 132 are interconnected.

[0083] Specifically, in this embodiment, by setting the cooling oil passage 130 to the above structure, the cooling oil can have more contact time and a larger contact area with the motor rotor when entering the cooling oil passage 130. The setting of this structure can further ensure that the motor shaft 300 has a better cooling effect when rotating at high speed.

[0084] More specifically, in this embodiment, the annular cavity may be provided with any number of spacers 131, such as 6, 7, 8, or 10, wherein the number of cavities 132 should be one more than the number of spacers 131. For example, when there are 7 spacers 131, 8 cavities 132 are formed.

[0085] According to another embodiment of the present invention, such as Figure 1 , Figure 3 and Figure 5 As shown, the annular cavity is in the longitudinal direction of the housing 100 ( Figure 3The vertical direction of the partition 131 is C-shaped; each partition 131 has a through hole 131A, so that two adjacent partitions 132 are connected through the through hole 131A; and the through holes 131A on two adjacent partitions 131 are staggered in the length direction of the partition 131.

[0086] Specifically, in this embodiment, the annular cavity is configured as a "C-shaped" structure on a surface perpendicular to the length direction of the housing 100, which ensures the assemblability of the motor shaft 300, gear set 400, and housing 100. Furthermore, by offsetting the through holes 131A on the spacer 131 along its length, the cooling oil can circulate along the length direction of the housing 100 when entering the cooling oil passage 130, further improving the cooling effect of the motor shaft 300 during high-speed rotation.

[0087] According to another embodiment of the present invention, such as Figure 1 and Figure 5 As shown, at least seven spacers 131 are provided, and the through holes 131A on two adjacent spacers 131 are located at the ends of the two adjacent spacers 131 that are far apart from each other.

[0088] Specifically, in this embodiment, by placing the through holes 131A on the two adjacent spacers 131 at the ends of the two adjacent spacers 131 that are far apart from each other, the effective flow length of the cooling oil in the length direction of the partition 132 when entering the cooling oil passage 130 is longer, thereby further improving the cooling effect of the motor shaft 300 when rotating at high speed.

[0089] According to another embodiment of the present invention, a one-way valve (not shown in the figure) is provided at the cooling oil passage outlet 134 to restrict the oil in the oil suction chamber 110 from entering the cooling oil passage outlet 134.

[0090] Specifically, in this embodiment, a one-way valve is provided at the cooling oil outlet 134 to prevent the oil in the oil suction chamber 110 from flowing back from the cooling oil outlet 134 into the cooling oil flow channel, which would cause damping to the rotation of the motor rotor. Therefore, the energy loss can be further reduced and the working efficiency of the motor can be improved by setting this structure.

[0091] According to another embodiment of the present invention, such as Figure 3 As shown, a sealing strip 600 is provided between the housing 100 and the end cover 200, and an oil seal 700 is provided between the motor shaft 300 and the gear set 400 inside the housing 100.

[0092] Specifically, in this embodiment, the sealing strip 600 between the housing 100 and the end cover 200 can reduce the probability of oil leakage in the oil pump motor, and the oil seal 700 can prevent oil convection between the motor shaft 300 cavity and the gear set 400 cavity, thus affecting the working performance of the oil pump motor.

[0093] More specifically, the sealing strip 600 is provided to prevent the transmission fluid in the oil pump chamber from entering the motor chamber. The sealing strip 600 is provided between the housing of the control component and the housing 100 of the oil pump motor, and between the housing 100 of the oil pump motor and the end cover 200, to prevent water, oil, dust and other debris from the external environment from entering the inside of the oil pump motor.

[0094] According to another embodiment of the present invention, such as Figure 3 As shown, the automotive oil pump motor also includes a control component 800, which is located at the end of the housing 100 away from the end cover 200, and the housing of the control component 800 and the housing 100 of the oil pump motor are assembled into an integral structure.

[0095] Specifically, in this embodiment, the housing of the control component 800 and the housing 100 of the oil pump motor are assembled into an integral structure, which can ensure the structural stability of the oil pump motor.

[0096] More specifically, in this embodiment, the housing of the control component 800 and the housing 100 can be assembled into a single structure using detachable connectors such as bolts. The parts on the housing 100 corresponding to the motor shaft 300 and the gear set 400 can be set as separate structures and then assembled into a single structure using bolts, or they can be directly set as a single structure. The specific arrangement can be set according to actual design and usage requirements, and this embodiment does not limit it in this way.

[0097] More specifically, the specific structure and arrangement of the control component 800 are similar to those of the control components in existing oil pump motors, and this embodiment will not elaborate further on this.

[0098] While the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the invention to these descriptions. Various changes in form and detail can be made by those skilled in the art, including several simple deductions or substitutions, without departing from the spirit and scope of the invention.

Claims

1. An oil pump motor for an automobile, comprising a housing, an end cover, a motor shaft and a gear set; wherein, The end cap is fixed to one end of the housing. The motor shaft and the gear set are both housed within the housing. The gear set is connected to the power output end of the motor shaft, and is located near the one end of the housing. The housing has an oil suction chamber and an oil outlet chamber inside one end. The gear set is located between the oil suction chamber and the oil outlet chamber. The oil pressure difference between the oil outlet chamber and the oil suction chamber is adjusted by the motor shaft linking the gear set. The end cover is provided with an oil suction port and an oil outlet. The end cover is characterized in that it is also provided with an oil suction inlet communicating with the oil suction chamber, and the end cover is also provided with an oil outlet communicating with the oil outlet chamber, and the oil outlet is also communicating with the oil outlet. A cooling oil channel extending circumferentially along the surface of the housing facing the end cap is provided at one end of the housing. The cooling oil channel has a cooling oil channel inlet and a cooling oil channel outlet, and the cooling oil channel outlet communicates with the oil suction chamber. Furthermore, the end cap is also provided with an adjustment assembly, through which the oil suction port selectively communicates with both the cooling oil channel inlet and the oil suction chamber inlet. When the rotational speed of the motor shaft is less than a preset first speed threshold, the adjustment component is in a first position state, the oil suction port is connected to the oil suction chamber inlet through the adjustment component, and the oil suction port is not connected to the cooling oil passage inlet, so that the oil entering from the oil suction port enters the oil suction chamber through the oil suction chamber inlet; When the rotational speed of the motor shaft is greater than the preset second speed threshold, the adjustment component is in the second position state, the oil suction port is connected to the cooling oil passage inlet through the adjustment component, and the oil suction port is not connected to the oil suction chamber inlet, so that the oil entering from the oil suction port sequentially enters the oil suction chamber through the cooling oil passage inlet, the cooling oil passage, and the cooling oil passage outlet; Wherein, the second speed threshold is greater than the first speed threshold.

2. The oil pump motor for an automobile according to claim 1, characterized by An adjustment channel is provided at the end cap. The oil suction port, the oil outlet, the oil suction chamber inlet, the oil outlet chamber outlet, and the cooling oil passage inlet are respectively connected to the adjustment channel, and the oil outlet chamber outlet is connected to the oil outlet through the adjustment channel. The adjustment assembly includes a valve core and an elastic component. The valve core is slidably connected within the adjustment channel, and the elastic component is connected between one end of the valve core and the inner wall surface of the adjustment channel. The valve core has a first sealing portion, a rod portion, and a second sealing portion spaced apart along the length direction of the valve core. An annular gap is formed between the rod portion and the inner wall surface of the adjustment channel. When the adjusting component is in the first position, the oil pressure difference between the oil outlet chamber and the oil suction chamber is less than the elastic force of the elastic component. Under the action of the elastic force of the elastic component, the first sealing part of the valve core is sealed to the inner wall of the adjusting channel and is located between the oil suction chamber inlet and the oil outlet. The second sealing part is sealed to the inner wall of the adjusting channel and is located between the oil suction port and the cooling oil passage inlet, so as to close the cooling oil passage inlet so that the oil suction port and the cooling oil passage inlet are not connected. Furthermore, the oil suction port is connected to the oil suction chamber inlet through the annular gap. When the adjusting component switches from the first position state to the second position state, the oil pressure difference between the oil outlet chamber and the oil suction chamber is greater than the elastic force of the elastic component. Under the action of oil pressure at the oil outlet of the oil outlet, the valve core overcomes the elastic force of the elastic component and moves towards the position close to the oil suction chamber inlet. The first sealing part of the valve core is sealed to the inner wall of the adjusting channel and is located between the oil suction port and the oil suction chamber inlet. The second sealing part is sealed to the inner wall of the adjusting channel and is located between the cooling oil passage inlet and the inner wall of the adjusting channel, so as to close the oil suction chamber inlet so that the oil suction port is not connected to the oil suction chamber inlet. Furthermore, the oil suction port is connected to the cooling oil passage inlet through the annular gap.

3. The oil pump motor for an automobile according to claim 2, characterized by The elastic component is configured as a spring, which abuts against the second sealing part of the valve core and the inner wall surface of the adjustment channel near the oil suction chamber inlet.

4. The oil pump motor for an automobile according to claim 3, characterized by The valve core is configured with a "dumbbell" shape, and a blind cavity is formed in the adjustment channel near the oil suction port, with the spring at least partially placed in the blind cavity.

5. The automotive oil pump motor as described in any one of claims 1-4, characterized in that, The cooling oil passage is configured as follows: an annular cavity formed at one end of the housing and extending circumferentially along the housing, wherein a plurality of partitions extending axially along the housing are spaced apart in the annular cavity, the plurality of partitions dividing the annular cavity into a plurality of partition cavities extending axially along the housing, and adjacent two partition cavities are interconnected.

6. The oil pump motor for an automobile according to claim 5, wherein The annular cavity has a "C-shaped" structure on a plane perpendicular to the length direction of the shell; Each of the spacers has a through hole, allowing two adjacent cavities to communicate through the through hole; and, The through holes on two adjacent spacers are staggered along the length of the spacers.

7. The oil pump motor for an automobile according to claim 6, wherein The spacers are provided with at least 7, and the through holes on two adjacent spacers are located at the ends of the two adjacent spacers that are far apart from each other.

8. The oil pump motor for an automobile according to claim 5, wherein A one-way valve is provided at the outlet of the cooling oil passage to prevent oil in the oil suction chamber from entering the outlet of the cooling oil passage.

9. The automotive oil pump motor as described in claim 5, characterized in that, A sealing strip is provided between the housing and the end cover, and an oil seal is provided between the motor shaft and the gear set inside the housing.

10. The automotive oil pump motor as described in claim 5, characterized in that, The automotive oil pump motor also includes a control component, which is located at the end of the housing away from the end cover, and the housing of the control component and the housing of the oil pump motor are assembled as an integral structure.

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