WO2024036894A1

WO2024036894A1 - Gear, pump, and vehicle

Info

Publication number: WO2024036894A1
Application number: PCT/CN2023/075894
Authority: WO
Inventors: 化豪爽; 陈亚莉
Original assignee: 安徽威灵汽车部件有限公司; 广东威灵汽车部件有限公司
Priority date: 2022-08-19
Filing date: 2023-02-14
Publication date: 2024-02-22

Abstract

A gear, a pump, and a vehicle. The gear (100) comprises: a gear body (110), wherein in the axial direction of the gear (100), the gear body (110) is provided with two matching end surfaces (112) which are opposite to each other, the outer peripheral wall of the gear body (110) is connected between the two matching end surfaces (112), and blocking portions (118) are formed on the outer peripheral wall of the gear body (110); and recess bodies (120) provided on the outer peripheral wall of the gear body (110), wherein a blocking portion (118) is provided between the at least one matching end surface (112) and the recess bodies (120).

Description

Gears, pumps and vehicles

This application is required to be submitted to the State Intellectual Property Office of China on August 19, 2022, with the application number "202210999362.0", and the invention name is "Gears, Pumps and Vehicles" and submitted to the State Intellectual Property Office of China on August 19, 2022, with the application number The priority of the Chinese patent application is "202222190808.3" and the invention title is "Gear, Pump and Vehicle", the entire content of which is incorporated into this application by reference.

Technical field

The present application relates to the field of pump technology, specifically to a gear, a pump and a vehicle.

Background technique

The electronic oil pump includes gears. The structural settings of the gears are unreasonable, which causes the electronic oil pump to have a very large friction torque when it is started at low temperatures, causing the speed to fail to increase and reducing the performance of the product.

technical problem

The speed of the electronic oil pump is low.

Technical solutions

This application aims to solve at least one of the technical problems existing in the prior art or related technologies.

To this end, a first aspect of the application proposes a gear.

A second aspect of the application proposes a pump.

A third aspect of the application proposes a vehicle.

In view of this, the first aspect of the present application proposes a gear, including: a gear body. Along the axial direction of the gear, the gear body has two oppositely arranged mating end surfaces, and the outer peripheral wall of the gear body is connected between the two mating end surfaces. Between, the outer peripheral wall of the gear body is formed with a blocking portion; the groove body is provided on the outer peripheral wall of the gear body, and the blocking portion is provided between at least one mating end surface and the groove body.

According to the above-mentioned gear of this application, it may also have the following additional technical features:

In some embodiments, the distance from the notch of the groove body to the bottom of the groove gradually decreases along the middle to the edge of the groove of the groove body.

In some embodiments, the groove body includes any one of the following or a combination thereof: a strip groove, a spherical groove, or a spiral groove.

In some embodiments, the number of groove bodies is multiple, and the plurality of groove bodies are arranged at intervals.

In some embodiments, the plurality of groove bodies are divided into at least one row of groove bodies, and each row of groove bodies includes a plurality of groove bodies arranged at intervals along the circumferential direction of the gear body.

In some embodiments, when multiple tank bodies are divided into multiple rows of tank bodies, a barrier is provided between any two adjacent rows of tank bodies.

In some embodiments, the number of multiple rows of tank bodies is two rows. The two rows of tank bodies are respectively referred to as the first row of tank bodies and the second row of tank bodies. Each tank body in the first row of tank bodies is connected to the second row of tank bodies. One of the tanks is set correspondingly.

In some embodiments, a plurality of first recesses are spaced apart from the outer edge of each mating end surface, and each groove body is connected to one first recess.

In some embodiments, along the axial direction of the gear, the maximum value of the height of the groove bodies of the first row of groove bodies is h1, the maximum value of the height of the groove bodies of the second row of groove bodies is h2, and the height of the gear body is H. , where h1+h2≤0.9×H.

In some embodiments, the gear body includes a hub and a plurality of gear teeth; the minimum length of the portion of the hub located between any two adjacent gear teeth in the radial direction of the gear is d1; the groove body is located on the radial direction of the gear. The maximum value of the depth in the direction is d2; where d2<d1.

In some embodiments, the groove body is arranged corresponding to the gear teeth.

In some embodiments, each row of groove bodies includes N1 groove bodies, the number of gear teeth is N2, and the plurality of groove bodies are divided into M rows of groove bodies; where, N1=M×N2, M≥1.

In some embodiments, when multiple grooves are divided into a row of grooves, the maximum height of the grooves in the gear axial direction is h3, and the height of the gear body is H, where h3≤0.9×H.

In some embodiments, when multiple grooves are divided into a row of grooves, a plurality of second recesses are spaced apart from the outer edge of the mating end surface on one side, and each groove is connected to a second recess; There is a blocking part between the matching end surface of the side and the tank body.

In some embodiments, the connection between the groove body and the gear body has a smooth transition.

A second aspect of the application provides a pump, including: a gear as in any embodiment of the first aspect.

In some embodiments, the pump further includes: a housing assembly having a motor cavity and a pump cavity; a motor located in the motor cavity; a rotating shaft with a first end of the rotating shaft mated with the motor; and a pump part located in the pump cavity. , the pump part cooperates with the second end of the rotating shaft, the pump part includes a gear and an internal gear, the internal gear cooperates with the rotating shaft, the gear is located outside the internal gear, and the internal gear can drive the gear to rotate.

A third aspect of the present application provides a vehicle, including: a pump as in the second aspect.

beneficial effects

The gears, pumps and vehicles provided by this application are conducive to improving the bearing capacity of the oil film of lubricating oil and improving the bearing effect of the oil film. Under the action of the bearing capacity of the oil film, the shear force of the gear 100 is greater when rotating, and has a strong The supporting function makes the contact between the gear 100 and the pump chamber loose, which can reduce friction and improve lubrication performance. In this way, the friction torque when the pump is running can be effectively reduced, the rotation speed of the pump can be increased at low temperatures, and it is beneficial to improve the quality of the product. Use performance.

Additional aspects and advantages of the invention will be apparent from the description which follows, or may be learned by practice of the invention.

Description of the drawings

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

Figure 1 shows a schematic structural diagram of a gear according to an embodiment of the present application;

Figure 2 shows a schematic structural diagram of the gear from a first perspective of the first embodiment of the present application;

Figure 3 shows a schematic structural diagram of the gear from a second perspective according to the first embodiment of the present application;

Figure 4 shows a schematic structural diagram of the gear from a first perspective of the second embodiment of the present application;

Figure 5 shows a schematic structural diagram of the gear from a second perspective according to the second embodiment of the present application;

Figure 6 shows a schematic structural diagram of the gear from a first perspective of the third embodiment of the present application;

Figure 7 shows a schematic structural diagram of the gear from a second perspective according to the third embodiment of the present application;

Figure 8 shows a schematic structural diagram of a gear from a first perspective according to the fourth embodiment of the present application;

Figure 9 shows a schematic structural diagram of the gear from a second perspective according to the fourth embodiment of the present application;

Figure 10 shows a schematic structural diagram of a gear from a first perspective according to the fifth embodiment of the present application;

Figure 11 shows a schematic structural diagram of a gear from a second perspective according to the fifth embodiment of the present application;

Figure 12 shows a cross-sectional view of a pump according to one embodiment of the present application.

Among them, the corresponding relationship between the reference signs and component names in Figures 1 to 12 is:

100 gear, 110 gear body, 112 mating end surface, 114 first recess, 116 second recess, 118 blocking part, 120 groove body, 130 first row of groove bodies, 140 second row of groove bodies, 150 hub, 160 gear teeth, 200 pump, 210 shell assembly, 220 pump chamber, 230 motor chamber, 240 motor, 250 rotating shaft, 260 pump part, 262 internal gear.

Embodiments of the invention

In order to understand the above-mentioned objects, features and advantages of the present application more clearly, the present application will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, as long as there is no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

Many specific details are set forth in the following description to fully understand the present application. However, the present application can also be implemented in other ways different from those described here. Therefore, the protection scope of the present application is not limited by the specific disclosures below. Limitations of Examples.

The gear 100, pump and vehicle according to some embodiments of the present application are described below with reference to FIGS. 1 to 12 .

As shown in Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10 and Figure 11, a gear 100 according to some embodiments of the present application, the gear 100 It includes a gear body 110 and a groove body 120.

Along the axial direction of the gear 100 , the gear main body 110 has two opposite mating end surfaces 112 . The outer peripheral wall of the gear main body 110 is connected between the two mating end surfaces 112 . A blocking portion 118 is formed on the outer peripheral wall of the gear main body 110 .

The groove body 120 is provided on the outer peripheral wall of the gear body 110 , and a blocking portion 118 is provided between at least one mating end surface 112 and the groove body 120 .

In detail, the gear 100 includes a gear body 110 and a groove body 120. The groove body 120 is provided on the outer peripheral wall of the gear body 110.

The gear body 110 has two mating end surfaces 112 , and the two mating end surfaces 112 are opposite and spaced apart along the axial direction of the gear 100 .

The matching structure of the gear body 110 and the groove body 120 is reasonably set so that a blocking portion 118 is formed on the outer peripheral wall of the gear body 110. The blocking portion 118 is provided between at least one mating end surface 112 and the groove body 120. The blocking portion 118 has a separation fit. The functions of the end surface 112 and the groove body 120.

It can be understood that the two mating end surfaces 112 of the gear body 110 are respectively referred to as the first end surface and the second end surface. When the blocking portion 118 is provided between the first end surface and the groove body 120 , the blocking portion 118 separates the first end surface and the groove body 120 . When the blocking portion 118 is provided between the second end surface and the groove body 120 , the blocking portion 118 separates the second end surface and the groove body 120 .

Specifically, the pump includes a pump chamber and a gear 100. The gear 100 is located in the pump chamber. The gear 100 can rotate relative to the pump chamber. There is lubricating oil between the gear 100 and the wall of the pump chamber. Since the groove body 120 is provided on the outer peripheral wall of the gear body 110, when the gear 100 rotates relative to the pump chamber, the lubricating oil located in the groove body 120 can be brought out. In this way, it is conducive to improving the bearing capacity of the oil film of the lubricating oil and improving the bearing effect of the oil film. Under the action of the bearing capacity of the oil film, the shear force of the gear 100 is greater when it rotates, and has a strong supporting effect, so that the gear 100 is in contact with the pump. The loose contact of the cavity can reduce friction and improve lubrication performance. In this way, the friction torque during pump operation can be effectively reduced, the pump speed at low temperatures can be increased, and the performance of the product can be improved.

Furthermore, since the groove body 120 is provided on the outer peripheral wall of the gear body 110, the space for storing lubricating oil will be increased. In this way, more lubricating oil can be accommodated, which can also improve the lubrication of the gear 100 when it rotates. Effect.

Furthermore, since the groove body 120 is provided on the outer peripheral wall of the gear body 110, the contact area between the gear 100 and the pump chamber can be reduced, the friction force can be reduced, and the friction torque can be reduced.

Furthermore, since the blocking portion 118 is provided between at least one mating end surface 112 and the groove body 120, that is, the groove body 120 does not penetrate the two mating end surfaces 112, the blocking portion 118 blocks the groove body 120 and the at least one mating end surface 112. In this way, the lubricating oil at the groove body 120 will not flow from one mating end surface 112 to the other mating end surface 112 . If the groove body 120 penetrates the two mating end surfaces 112, then the lubricating oil can flow from one mating end surface 112 to the other mating end surface 112, which will reduce the volumetric efficiency of the pump.

Therefore, in this application, a blocking portion 118 is provided between at least one mating end surface 112 and the tank body 120, so as to reduce the friction torque during pump operation while ensuring that the volumetric efficiency of the pump is not reduced.

Specifically, a portion of the outer peripheral wall of the gear body 110 is recessed toward the middle of the gear body 110 to form the groove body 120 .

In some embodiments, along the middle to the edge of the slot of the slot body 120, the distance from the slot opening of the slot body 120 to the bottom of the slot gradually decreases.

In detail, the shape of the groove body 120 is further defined such that the distance from the groove opening of the groove body 120 to the groove bottom of the groove body 120 gradually decreases along the direction from the middle of the groove opening of the groove body 120 to the edge of the groove opening. When the gear 100 rotates relative to the pump chamber, the lubricating oil located in the tank 120 can be brought out. The shape of the groove body 120 provides effective and reliable structural support for improving the bearing capacity of the lubricating oil film and ensuring the bearing effect of the oil film.

Specifically, along the middle part of the groove of the groove body 120 to the edge, the distance from the groove of the groove body 120 to the bottom of the groove gradually decreases. It means that the groove body 120 is sectioned along the axial direction perpendicular to the gear 100. In the cross section, the outline of the groove body 120 is arc-shaped. That is, the deep middle edge of the groove body 120 is shallow.

Further, as shown in Figures 3, 5 and 7, the groove body 120 includes a strip groove.

As shown in Figure 9, the groove body 120 includes a spherical groove.

As shown in Figure 11, the groove body 120 includes a spiral groove. It can be understood that the groove body 120 shown in Figure 11 is a part of the spiral.

The groove body 120 includes a strip groove and a spherical groove.

The groove body 120 includes strip grooves and spiral grooves.

The groove body 120 includes spiral and spherical grooves.

The groove body 120 includes strip grooves, spiral grooves and spherical grooves.

When the groove body 120 includes strip grooves and spherical grooves, it has the advantages of convenient processing and low production cost.

When the groove body 120 includes a spiral groove, the bearing capacity of the lubricating oil film is greater and the lubrication effect is better.

In some embodiments, the number of groove bodies 120 is multiple, and the plurality of groove bodies 120 are arranged at intervals.

In detail, the number of the groove bodies 120 is multiple, and the distribution positions of the plurality of groove bodies 120 are defined. Specifically, the plurality of groove bodies 120 are arranged at intervals. That is, there is no communication between any two groove bodies 120 . In this way, there will not be one groove body 120 penetrating through the mating end surface 112 on one side, and the other groove body 120 penetrating the mating end surface 112 on the other side. Since the two groove bodies 120 are connected, the mating end surfaces 112 on both sides will be connected. situation occurs, it can ensure that the volumetric efficiency of the pump does not decrease.

Further, the plurality of groove bodies 120 are divided into at least one row of groove bodies 120 , and each row of groove bodies 120 includes a plurality of groove bodies 120 spaced apart along the circumferential direction of the gear body 110 .

Among them, by reasonably setting the matching structure of the plurality of groove bodies 120, the plurality of groove bodies 120 are divided into at least one row of groove bodies 120, and each row of groove bodies 120 includes a plurality of grooves arranged at intervals along the circumferential direction of the gear body 110. Body 120, this structural arrangement increases the matching area between the tank body 120 and the pump cavity, ensuring the balance and consistency of the bearing capacity of the oil film at different positions of the gear 100, and ensuring the matching between the gear 100 and the pump cavity at different positions. gap.

Specifically, along the circumferential direction of the gear 100, the distance between any two adjacent groove bodies 120 is equal.

Of course, along the circumferential direction of the gear 100 , the spacing between any two adjacent groove bodies 120 in some of the plurality of groove bodies 120 may be equal.

Alternatively, along the circumferential direction of the gear 100, the distance between any two adjacent groove bodies 120 is unequal.

Specifically, as shown in FIGS. 4 and 5 , the plurality of grooves 120 are divided into a row of grooves 120 . Each groove 120 is connected to the mating end surface 112 on one side but not to the mating end surface 112 on the other side. .

Specifically, as shown in FIGS. 6 , 7 , 8 , 9 , 10 and 11 , the plurality of troughs 120 are divided into a row of troughs 120 , and each trough 120 has mating end surfaces 112 on both sides. None of them are connected. The groove body 120 includes a strip groove, a spherical groove or a spiral groove.

In some embodiments, as shown in FIGS. 2 and 3 , when the plurality of troughs 120 are divided into multiple rows of troughs 120 , a barrier 118 is provided between any two adjacent rows of troughs 120 .

In detail, by reasonably arranging the matching structure of the multiple rows of tank bodies 120, the blocking portion 118 is provided between any two adjacent rows of tank bodies 120. That is, due to the existence of the blocking portion 118, any two adjacent rows of tank bodies 120 are 120 are arranged separately, so that the lubricating oil will not flow from one mating end surface 112 to the other mating end surface 112 .

Further, as shown in Figures 2 and 3, the number of the multi-row tanks 120 is two rows, and the two rows of tanks 120 are respectively referred to as the first row of tanks 130 and the second row of tanks 140. The first row of tanks 120 Each groove body 120 in 130 is arranged corresponding to one groove body 120 in the second row of groove bodies 140 .

Wherein, when the plurality of tank bodies 120 are divided into two rows of tank bodies 120, the two rows of tank bodies 120 are marked, and the two rows of tank bodies 120 are respectively referred to as the first row of tank bodies 130 and the second row of tank bodies 140. Both the first row of tank bodies 130 and the second row of tank bodies 140 include a plurality of tank bodies 120 . Each groove body 120 in the first row of groove bodies 130 is arranged corresponding to one groove body 120 in the second row of groove bodies 140 , and the plurality of groove bodies 120 in the first row of groove bodies 130 are arranged at intervals along the circumferential direction of the gear body 110 , the plurality of groove bodies 120 of the second row of groove bodies 140 are arranged at intervals along the circumferential direction of the gear body 110 .

This setting can ensure the balance and consistency of the arrangement of multiple groove bodies 120. In this way, the balance and consistency of the bearing capacity of the oil film at different positions of the gear 100 can be ensured, and the cooperation between the gear 100 and the pump chambers at different positions can be ensured. The clearance makes the contact between the gear 100 and the pump chamber loose, which can reduce friction and improve lubrication performance.

Of course, the matching positions of the first row of groove bodies 130 and the second row of groove bodies 140 include, but are not limited to, each groove body 120 in the first row of groove bodies 130 corresponding to one groove body 120 in the second row of groove bodies 140. . For example, the matching structure of the first row of groove bodies 130 and the second row of groove bodies 140 also includes: a plurality of first groove bodies 120 and a plurality of second groove bodies 120 arranged in a staggered manner. For example, the gear body 110 is located at any two adjacent ones. The portion between the first groove bodies 120 is arranged corresponding to one second groove body 120 .

Specifically, as shown in FIGS. 2 and 3 , the first row of tank bodies 130 includes a plurality of first tank bodies, and the second row of tank bodies 140 includes a plurality of second tank bodies, and each first tank body is connected to a second tank body. Corresponding settings for the tank. The mating structure of the first groove body and the corresponding second groove body is further defined. The first groove body penetrates the mating end surface 112 on one side, and the second groove body penetrates the mating end surface 112 on the other side. The first groove body It is spaced apart from the second groove body, that is, the mating end surfaces 112 on both sides are not connected to each other.

In some embodiments, as shown in FIG. 3 , a plurality of first recesses 114 are arranged at intervals on the outer edge of each mating end surface 112 , and each groove body 120 is connected to one first recess 114 .

In detail, by reasonably setting the structure of the mating end surface 112, a plurality of first recesses 114 are arranged at intervals on the outer edge of each mating end surface 112. The first recesses 114 are recessed from the edge of the mating end surface 112 toward the middle of the mating end surface 112. A groove body 120 is connected to a first recess 114 . This setting can ensure that when the gear 100 rotates relative to the pump chamber, the lubricating oil in the tank 120 can be smoothly brought out, ensuring the stability and feasibility of oil film formation.

Specifically, the groove body 120 and the first recessed portion 114 are sectioned along the axial direction perpendicular to the gear 100 . In the cross section, the shape of the contour line of the first recessed portion 114 is the same as the shape of the contour line of the groove body 120 . This arrangement can ensure the smoothness of the connection between the groove body 120 and the first recess 114 and reduce the resistance when the lubricating oil flows.

Further, as shown in FIG. 2 , along the axial direction of the gear 100 , the maximum height of the groove bodies 120 of the first row of groove bodies 130 is h1.

The maximum height of the groove bodies 120 of the second row of groove bodies 140 is h2.

The height of the gear body 110 is H.

Among them, h1+h2≤0.9×H.

By reasonably setting the matching structure of the gear body 110 , the first row of grooves 130 and the second row of grooves 140 , the maximum height of the grooves 120 of the first row of grooves 130 along the axial direction of the gear 100 is recorded as h1 , the maximum value of the height of the groove body 120 of the second row of groove bodies 140 is denoted as h2, the height of the gear body 110 is denoted as H, h1+h2≤0.9×H. This arrangement can ensure the height of the part of the gear body 110 used to block and seal the first row of groove bodies 130 and the second row of groove bodies 140. In this way, it can be ensured that the first row of groove bodies 130 and the second row of groove bodies 140 are not connected. Effectiveness and feasibility. The lubricating oil can be effectively prevented from flowing from the mating end surface 112 on one side to the mating end surface 112 on the other side, so that the volumetric efficiency of the pump will not be reduced.

Specifically, h1+h2=0.8×H, h1+h2=0.7×H, h1+h2=0.6×H, h1+h2=0.5×H, etc., which are not listed here one by one.

In some embodiments, as shown in FIG. 1 , gear body 110 includes a hub 150 and a plurality of gear teeth 160 .

The minimum length of the portion of the hub 150 located between any two adjacent gear teeth 160 in the radial direction of the gear 100 is d1.

The maximum depth of the groove body 120 in the radial direction of the gear 100 is d2.

Among them, d2<d1.

In detail, the gear body 110 includes a hub 150 and a plurality of gear teeth 160. By reasonably setting the matching structure of the hub 150, the gear teeth 160 and the groove body 120, the hub 150 is located between any two adjacent gear teeth 160. , the minimum value of the length in the radial direction of the gear 100 is denoted as d1, and the maximum value of the depth of the groove body 120 in the radial direction of the gear 100 is denoted as d2, d2<d1. The rigidity of the gear 100 can be ensured, the gear 100 is not easily deformed, and the safety and reliability of the gear 100 during operation can be ensured.

Further, the groove body 120 is provided correspondingly to the gear teeth 160 .

Among them, the matching structure of the groove body 120 and the gear teeth 160 is further limited, so that the groove body 120 and the gear teeth 160 are arranged correspondingly, that is, along the radial direction of the gear 100, the groove body 120 is located in a thicker area of the gear body 110, This setting can ensure the rigidity of the gear 100, the gear 100 is not easily deformed, and can ensure the safety and reliability of the gear 100 during operation.

Of course, the matching structure between the groove body 120 and the gear body 110 includes, but is not limited to, the groove body 120 being arranged correspondingly with the gear teeth 160 , and the part of the hub 150 located between any two adjacent gear teeth 160 may be correspondingly arranged with the groove body 120 .

Specifically, each gear tooth 160 is provided correspondingly to at least one groove body 120 .

Specifically, the gear 100 refers to a component with teeth processed on the rim, capable of continuous meshing, and transmitting motion and power.

Specifically, the hub 150 refers to the cylindrical portion in the gear 100, and the gear teeth 160 refer to the tooth portion connected to the cylindrical portion. The axial end surface of the hub 150 is the contact surface of the hub 150 , and the axial end surface of the gear teeth 160 is the toothed surface.

Further, each row of groove bodies 120 includes N1 groove bodies 120, the number of gear teeth 160 is N2, and the plurality of groove bodies 120 are divided into M rows of groove bodies 120; where, N1=M×N2, M≥1.

The matching structure of the groove bodies 120 and the gear teeth 160 is further limited. Specifically, each row of groove bodies 120 includes N1 groove bodies 120, the number of gear teeth 160 is N2, and the plurality of groove bodies 120 are divided into M rows of groove bodies. 120, N1=M×N2, M≥1. This setting can ensure the balance and consistency of the bearing capacity of the oil film at different positions of the gear 100, and can ensure the matching clearance between the gear 100 and the pump chambers at different positions.

As shown in FIGS. 4 to 11 , when the plurality of groove bodies 120 are divided into a row of groove bodies 120 , the relationship between the number of groove bodies 120 and the number of gears 100 is N1 = N2 .

As shown in FIGS. 2 and 3 , when the plurality of groove bodies 120 are divided into multiple rows of groove bodies 120 , the number of groove bodies 120 is equal to M times the number of gear teeth 160 .

In some embodiments, as shown in FIGS. 4 , 5 , 6 , 7 , 8 , 9 , 10 and 11 , when the plurality of troughs 120 are divided into a row of troughs 120 , The maximum value of the height of the body 120 in the axial direction of the gear 100 is h3, and the height of the gear main body 110 is H, where h3≤0.9×H.

In detail, by reasonably setting the matching structure of the groove body 120 and the gear body 110, when multiple groove bodies 120 are divided into a row of groove bodies 120, the maximum value of the height of the groove body 120 in the axial direction of the gear 100 is h3, The height of the gear body 110 is H, h3 and H satisfy h3 ≤ 0.9 × H. This setting can ensure that the gear body 110 is used to block and seal the height of the portion that is not connected to the groove body 120 and the mating end surface 112. In this way, the height of the gear body 110 can be ensured. The effectiveness and feasibility of disconnecting the side mating end faces 112. The lubricating oil can be effectively prevented from flowing from the mating end surface 112 on one side to the mating end surface 112 on the other side, so that the volumetric efficiency of the pump will not be reduced.

Specifically, h3=0.5×H, h3=0.6×H, h3=0.7×H, h3=0.8×H, etc., which are not listed here one by one.

In some embodiments, as shown in Figures 4 and 5, when the plurality of groove bodies 120 are divided into a row of groove bodies 120, a plurality of second recesses 116 are arranged at intervals on the outer edge of the mating end surface 112 on one side, Each groove 120 is connected to a second recess 116 .

A blocking portion 118 is provided between the mating end surface 112 on the other side and the groove body 120 .

In detail, by reasonably setting the structure of the mating end surface 112, a plurality of second recesses 116 are arranged at intervals on the outer edge of the mating end surface 112 on one side. The second recesses 116 are recessed from the edge of the mating end surface 112 toward the middle of the mating end surface 112. Each groove 120 is connected to a second recess 116 . This setting can ensure that when the gear 100 rotates relative to the pump chamber, the lubricating oil in the tank 120 can be smoothly brought out, ensuring the stability and feasibility of oil film formation.

Specifically, the groove body 120 and the second recessed portion 116 are sectioned along the axial direction perpendicular to the gear 100 . In the cross section, the shape of the contour line of the second recessed portion 116 is the same as the shape of the contour line of the groove body 120 . This arrangement can ensure the smoothness of the connection between the groove body 120 and the second recess 116 and reduce the resistance when the lubricating oil flows.

In some embodiments, the connection between the groove body 120 and the gear body 110 has a smooth transition.

In detail, by reasonably setting the matching structure of the groove body 120 and the gear body 110, the connection between the groove body 120 and the gear body 110 is smoothly transitioned, which ensures that when the gear 100 rotates relative to the pump chamber, the gear 100 will not interfere with the pump chamber. Scratching can ensure the safety and reliability of pump operation. If the connection between the tank body 120 and the gear body 110 is not smoothed, then the connection between the tank body 120 and the gear body 110 will form a line, and a line contact will occur between part of the edge of the gear 100 and the pump chamber, causing the pump to operate. It is easy for the gear 100 to be scratched against the pump chamber.

Specifically, the connection between the groove body 120 and the gear body 110 is rounded.

As shown in Figure 12, a pump according to some further embodiments of the present application includes: the gear 100 of any of the above embodiments.

In detail, since the pump includes the gear 100 as in any embodiment of the first aspect, it has all the beneficial effects of the above-mentioned gear 100, which will not be described one by one here.

Specifically, the pump also includes an internal gear. The internal gear is located inside the gear 100. The internal gear cooperates with the rotating shaft. The rotating shaft drives the internal gear to rotate. The internal gear drives the gear 100 to rotate. During the meshing process of the internal gear and the gear 100, the working medium is controlled. compression. That is to say, the internal gear is the driving gear, and the gear 100 is the driven gear.

Specifically, the pump includes an electronic oil pump.

The gear 100 includes a gear body 110 and a groove body 120. The groove body 120 is provided on the outer peripheral wall of the gear body 110.

Further, as shown in FIG. 12 , the pump 200 also includes: a housing assembly 210 having a motor cavity 230 and a pump cavity 220 ; a motor 240 located in the motor cavity 230 ; a rotating shaft 250 , the first part of the rotating shaft 250 end cooperates with the motor 240; the pump part 260 is located in the pump chamber 220, and the pump part 260 cooperates with the second end of the rotating shaft 250. The pump part 260 includes a gear 100 and an internal gear 262. The internal gear 262 cooperates with the rotating shaft 250, and the gear 100 is located at Outside the internal gear 262, the internal gear 262 can drive the gear 100 to rotate.

The pump 200 also includes a housing assembly 210, a motor 240, a rotating shaft 250 and a pump 200.

The housing assembly 210 defines a motor chamber 230 and a pump chamber 220 that are independent of each other. The motor 240 is located in the motor cavity 230, and the motor 240 includes a stator, a rotor, a stator winding and other structures. The pump part 260 is located in the pump chamber 220.

Pump section 260 includes gear 100 and internal gear 262 . The internal gear 262 cooperates with the rotating shaft 250. The rotating shaft 250 drives the internal gear 262 to rotate. The internal gear 262 can drive the gear 100 to rotate. That is, the motor 240 can drive the pump part 260 to rotate relative to the housing assembly 210 through the rotating shaft 250.

A vehicle according to further embodiments of the present application includes: a pump as in the above embodiments.

In detail, since the vehicle includes the pump in the second aspect, it has all the beneficial effects of the above pump, which will not be described one by one here.

Specifically, the vehicle may be a new energy vehicle. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc.

Specifically, the pump includes a gear 100. The gear 100 includes a gear body 110 and a groove body 120. The groove body 120 is provided on the outer peripheral wall of the gear body 110.

A plurality of groove bodies 120 are arranged on the upper and lower sides of the outer peripheral wall of the gear body 110, and the groove bodies 120 on the upper and lower sides are not connected. It can reduce the friction torque when the pump is started at low temperature and increase the rotation speed. In addition, the groove bodies 120 on the upper and lower sides are not connected, which enhances the sealing performance and prevents the volumetric ratio of the pump from being reduced.

Specifically, gear 100 includes a cycloidal gear.

The inner peripheral wall of the hub 150 of the gear 100 is provided with a plurality of gear teeth 160 , and the outer peripheral wall of the hub 150 is provided with a plurality of grooves 120 .

The outline of the groove body 120 is an arc shape with a deep middle and a shallow edge, and the connection between the groove body 120 and the gear body 110 has a smooth transition.

The minimum length of the portion of the hub 150 located between any two adjacent gear teeth 160 in the radial direction of the gear 100 is d1; the maximum depth of the groove 120 in the radial direction of the gear 100 is d2; where ,d2<d1.

Along the axial direction of the gear 100, the maximum value of the height of the groove bodies 120 of the first row of groove bodies 130 is h1, the maximum value of the height of the groove bodies 120 of the second row of groove bodies 140 is h2, and the height of the gear body 110 is H. , where h1+h2≤0.9×H.

The number of grooves 120 is M times the number of gear teeth 160 .

When the plurality of groove bodies 120 are divided into one row of groove bodies 120 , that is, there is only one row of groove bodies 120 , the number of groove bodies 120 is equal to the number of gear teeth 160 .

When there is only one row of grooves 120, the grooves 120 can be opened in the middle of the hub 150, and the grooves 120 are not connected to the mating end surfaces 112 on both sides.

The groove body 120 includes a strip groove, a spherical groove or a spiral groove.

In this application, the term "plurality" means two or more than two, unless otherwise expressly limited. The terms "installation", "connection", "connection" and "fixing" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be Either directly or indirectly through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiments," etc., mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in the present application. in at least one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above descriptions are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included in the protection scope of this application.

Claims

A gear, including:

Gear main body, along the axial direction of the gear, the gear main body has two oppositely arranged mating end surfaces, the outer peripheral wall of the gear main body is connected between the two mating end surfaces, and the outer peripheral wall of the gear main body forms There is a blocking part;

A groove body is provided on the outer peripheral wall of the gear body, and the blocking portion is provided between at least one of the mating end surfaces and the groove body.
The gear according to claim 1, wherein the distance from the notch of the groove body to the bottom of the groove gradually decreases along the middle to the edge of the groove of the groove body.
The gear according to claim 2, wherein the groove body includes any one of the following or a combination thereof: strip groove, spherical groove or spiral groove.
The gear according to any one of claims 1 to 3, wherein the number of the groove bodies is multiple, and the plurality of groove bodies are arranged at intervals.
The gear according to claim 4, wherein a plurality of the groove bodies are divided into at least one row of groove bodies, and each row of the groove bodies includes a plurality of the groove bodies arranged at intervals along the circumference of the gear body. .
The gear according to claim 5, wherein when a plurality of the groove bodies are divided into multiple rows of groove bodies, the blocking portion is provided between any two adjacent rows of the groove bodies.
The gear according to claim 6, wherein the number of the plurality of rows of groove bodies is two rows, and the two rows of groove bodies are respectively denoted as a first row of groove bodies and a second row of groove bodies, and the first row of groove bodies Each of the groove bodies in the body is arranged corresponding to one of the groove bodies in the second row of groove bodies.
The gear according to claim 7, wherein a plurality of first recesses are arranged at intervals on the outer edge of each of the mating end surfaces, and each of the grooves is connected to one of the first recesses.
The gear according to claim 7 or 8, wherein along the axial direction of the gear, the maximum value of the height of the groove bodies of the first row of groove bodies is h1, and the maximum value of the height of the groove bodies of the second row of groove bodies is h1. The maximum height of the groove body is h2, and the height of the gear body is H, where h1+h2≤0.9×H.
The gear according to any one of claims 5 to 9, wherein the gear body includes a hub and a plurality of gear teeth;

The minimum length of the portion of the hub located between any two adjacent gear teeth in the radial direction of the gear is d1;

The maximum depth of the groove body in the radial direction of the gear is d2;

Among them, d2<d1.
The gear according to claim 10, wherein the groove body is provided correspondingly to the gear teeth.
The gear according to claim 10 or 11, wherein each row of said groove bodies includes N1 said groove bodies, the number of said gear teeth is N2, and a plurality of said groove bodies are divided into M rows of groove bodies;

Among them, N1=M×N2, M≥1.
The gear according to any one of claims 5 to 12, wherein when a plurality of the groove bodies are divided into a row of groove bodies, the maximum value of the height of the groove body in the gear axial direction is h3 , the height of the gear body is H, where h3≤0.9×H.
The gear according to any one of claims 5 to 13, wherein when a plurality of the groove bodies are divided into a row of groove bodies, a plurality of second groove bodies are arranged at intervals on the outer edge of the mating end surface on one side. A recess, each of the grooves is connected to one of the second recesses;

The blocking portion is provided between the mating end surface on the other side and the groove body.
The gear according to any one of claims 1 to 14, wherein the connection between the groove body and the gear body has a smooth transition.
A pump, which includes:

A gear as claimed in any one of claims 1 to 15.
The pump of claim 16, further comprising:

a housing assembly having a motor cavity and a pump cavity;

A motor located in the motor cavity;

A rotating shaft, the first end of which matches the motor;

The pump part is located in the pump chamber. The pump part cooperates with the second end of the rotating shaft. The pump part includes the gear and an internal gear. The internal gear cooperates with the rotating shaft. The gear is located at Outside the internal gear, the internal gear can drive the gear to rotate.
A vehicle, including:

A pump as claimed in claim 16 or 17.