CN118532464A - Oil retaining structure, reducer, powertrain and vehicle - Google Patents

Abstract

The application provides an oil blocking structure, a speed reducer, a power assembly and a vehicle; the oil retaining structure comprises: a main body part and a flow guiding part; the main body part is installed on the casing of reduction gear, and the one end of water conservancy diversion portion is located on the main body part, and the other end extends to differential bearing one side of reduction gear, and the lubrication medium is splashed to the main body part through the operation of transmission subassembly in the reduction gear and is collected to the differential bearing through water conservancy diversion portion. According to the application, by arranging the oil blocking structure, splashed lubricating oil can be effectively collected, so that the distribution of the lubricating oil is facilitated, the lubricating oil quantity requirement of the speed reducer is reduced, and the comprehensive efficiency of the speed reducer is improved.

Description

Oil retaining structure, reducer, powertrain and vehicle

Technical Field

The present application relates to the field of vehicle technology, and in particular, to an oil baffle structure, a reducer, a power assembly and a vehicle.

Background Art

The main reducer assembly is an important part of the power transmission system of a passenger car. On the basis of transmitting torque, it can reduce speed, increase torque, and change the direction of power. The efficiency of the main reducer assembly affects the fuel consumption performance of the passenger car.

Usually, the main reducer assembly is composed of a reducer housing, spiral bevel gears, bearings, differentials, flanges and other parts, among which the spiral bevel gears are positioned and supported by the reducer housing and bearings. The spiral bevel gears include a driving bevel gear and a driven bevel gear. The lubricating oil enters the spiral bevel gears. Through the meshing transmission of the driving bevel gears and the driven bevel gears, the driven bevel gears stir the lubricating oil so that the lubricating oil splashes under the stirring action of high-speed rotation. The lubricating oil splashes onto the driving bevel gear of the spiral bevel gear, the driving bevel gear bearing and the differential bearing, thereby lubricating the driving bevel gear, the driving bevel gear bearing and the differential bearing.

Since the differential bearing includes a left differential bearing and a right differential bearing, and the left differential bearing and the right differential bearing are respectively arranged on both sides of the driven bevel gear and are respectively connected to the driven bevel gear. Due to the influence of the main reducer assembly structure layout, generally, the distance between the right differential bearing and the driven bevel gear is farther than the distance between the left differential bearing and the driven bevel gear. The splashing lubricating oil can quickly reach the left differential bearing which is closer, but because the right differential bearing is farther away, the splashing lubricating oil is difficult to reach the right differential bearing, resulting in unsatisfactory lubrication effect of the right differential bearing. In order to improve the lubrication effect of the right differential bearing, the amount of lubricating oil is often increased to ensure that the liquid level of the lubricating oil can reach the liquid level that can lubricate the differential bearing, but this method consumes a huge amount of lubricating oil, which is not conducive to cost control.

Summary of the invention

The embodiments of the present application provide an oil baffle structure, a reducer, a powertrain and a vehicle. The oil baffle structure can effectively collect splashed lubricating oil, which helps distribute the lubricating oil, reduces the lubricating oil demand of the reducer, and improves the overall efficiency of the reducer.

In the first aspect, the present application provides an oil retaining structure, comprising: a main body and a guide portion; the main body is mounted on the housing of the reducer, one end of the guide portion is arranged on the main body, and the other end extends to one side of the differential bearing of the reducer, and the lubricating medium splashes to the main body through the operation of the transmission assembly in the reducer for collection, and is transported to the differential bearing through the guide portion.

In the above technical solution, by setting up an oil retaining structure, the splashed lubricating oil can be fully collected, and then the oil retaining structure transfers the lubricating oil to the transmission assembly and the differential bearing, so as to further fully lubricate the transmission assembly and the differential bearing, thereby improving the lubrication effect of the transmission assembly and the differential bearing.

In one embodiment, the main body includes: an oil collecting tank and a support plate, the oil collecting tank is connected to the support plate, the guide portion is connected to the oil collecting tank, and the support plate at least partially envelops the cover and is arranged at the position where the differential bearing is connected to the transmission assembly.

In the above technical solution, the support plate partial envelope cover is arranged at the connection position between the differential bearing and the transmission assembly, separating the lubricating oil in the support plate from the inner cavity lubricating oil pool of the reducer, so that the differential bearing has less oil stirring during operation, thereby reducing oil stirring loss and improving the system lubrication efficiency.

In one embodiment, a through hole is provided on the oil collecting tank, and one end of the guide portion is disposed at the bottom of the oil collecting tank and communicated with the through hole.

In the above technical solution, a through hole for the circulation of lubricating oil is provided on the oil collecting tank, so that the lubricating oil splashed into the oil collecting tank can be quickly transferred to the guide part, and transported to the right bearing of the differential in time through the guide part to lubricate the right bearing of the differential.

In one embodiment, the oil collecting tank comprises: a collecting section and a conical guide section; the conical guide section is connected to the collecting section, and the through hole is provided on the conical guide section.

In the above technical solution, the collection section can effectively collect splashed lubricating oil, and the conical guide section can guide the lubricating oil collected by the collection section to the through hole in a timely manner, so that the lubricating oil enters the guide part through the through hole and is transported to the right bearing of the differential. Secondly, the conical guide section plays a role in buffering the transmission of the lubricating oil, and the lubricating oil in the collection section can quickly flow to the through hole through the inclined conical guide section.

In one embodiment, a protrusion is provided on the conical guide section located at the via hole, and the protrusion separates the conical guide section into a first guide channel and a second guide channel, wherein one end of the first guide channel is connected to the collecting section, and the other end is connected to one end of the second guide channel, and the other end of the second guide channel is connected to the via hole.

In the above technical solution, a protrusion is provided on the conical guide section at the through hole, and the protrusion divides the conical guide section into two channels, namely, a first guide channel and a second guide channel. The lubricating oil splashed to the collection section first flows through the first guide channel, flows into the second guide channel after the slow flow of the first guide channel, and then flows from the second guide channel to the through hole, and flows out from the through hole to the guide section. By providing the first guide channel and the second guide channel, the lubricating oil can be guided into the through hole, which plays a certain role in buffering and diverting, and improves the congestion of the liquid flow formed at the through hole due to the lubricating oil flowing directly to the through hole.

In one embodiment, the oil collecting tank further includes: a third guide channel; one end of the third guide channel is connected to the conical guide section, and the other end of the third guide channel is inclined toward the transmission component in the reducer.

In the above technical solution, the lubricating oil collected in the collecting section can be timely transported through the conical guide section and transferred to the main transmission member through the third guide channel, thereby achieving lubrication of the main transmission member.

In one embodiment, an end of the third guide channel away from the conical guide section is further connected to a guide transmission member.

In the above technical solution, by providing a flow-guiding transmission member, the length of the third flow-guiding channel can be lengthened without increasing the volume of the oil-blocking structure, thereby transporting the lubricating oil to the main transmission member to achieve full lubrication of the main transmission member.

In one embodiment, the support plate includes: a mounting portion and a bearing ring portion, the mounting portion is used to be connected to the housing of the reducer, the bearing ring portion is connected to the mounting portion, and a notch is provided on the support plate, and the notch is used to provide an escape space for the operation of the transmission assembly in the reducer.

In the above technical solution, the load-bearing ring segment envelope cover is arranged at the connection position of the differential bearing and the transmission assembly, and a certain gap is left between the mounting portion and the connection position of the differential bearing and the transmission assembly. On the premise that the transmission assembly can run normally at a high speed to stir and lubricate the lubricating oil, the problem of lubricating oil flowing back from one side of the transmission part can be reduced, thereby reducing the actual lubricating oil liquid level and reducing the loss of lubricating oil.

The gap provides movement space for the transmission of the main transmission member, thereby providing space for the meshing transmission of the main transmission member and the slave transmission member.

In one embodiment, one end of the carrying ring portion connected to the mounting portion converges toward one end of the carrying ring portion away from the mounting portion.

In the above technical solution, the structure of the bearing ring can reduce the problem of lubricating oil flowing back to the side of the transmission part under the premise of ensuring the normal high-speed operation of the transmission component to stir the lubricating oil, thereby reducing the actual lubricating oil level and reducing the loss of lubricating oil.

In one embodiment, the guide portion includes: a slideway and a baffle, one end of the slideway is connected to the main body, and the baffle is arranged on both sides of the edge of the slideway along the length direction.

In the above technical solution, the baffle plays a role in blocking the lubricating oil in the slideway, so that the lubricating oil delivered through the hole can flow along the slideway to the position of the right bearing of the differential for lubrication.

In one embodiment, the slide includes: a first slide, a second slide and a third slide; the first slide is connected to the main body, the second slide is connected to the first slide, and the third slide is connected to the second slide; wherein, the first slide is a straight section, the second slide is an inclined section, the third slide is a straight section, and the width of the first slide is greater than the width of the third slide.

In the above technical solution, by providing three sections of slideways, the flow rate of the lubricating oil in the slideway of the guide portion can be adjusted, so that the lubricating oil can flow evenly and fully to the right bearing of the differential.

In a second aspect, the present application provides a reducer, comprising: a housing; a transmission assembly; a differential bearing connected to the transmission assembly; and an oil retaining structure as described in any embodiment of the first aspect of the present application, wherein the oil retaining structure is mounted on the housing and is located between the transmission assembly and the differential bearing, so that when the transmission assembly runs and causes the lubricating medium to splash, at least part of the lubricating medium splashes onto the oil retaining structure and is transferred to the transmission assembly and the differential bearing through the oil retaining structure.

In the above technical solution, by providing an oil retaining structure, the lubricating oil can be fully collected and transported to the transmission assembly and the differential bearings for sufficient lubrication, thereby improving the lubrication effect of the transmission assembly and the differential bearings.

In one embodiment, the transmission assembly includes: a main transmission member and a slave transmission member, and the main transmission member and the slave transmission member are meshed for transmission; the differential bearing includes: a left differential bearing and a right differential bearing; the left differential bearing and the right differential bearing are respectively arranged on both sides of the slave transmission member, the main body of the oil retaining structure is located on one side of the slave transmission member, and the guide portion of the oil retaining structure extends to the right differential bearing.

In the above technical solution, the gear transmission of the driving bevel gear and the driven bevel gear is used for power transmission between the intersecting shafts, the transmission is smoother, and the transmission efficiency is improved. The oil retaining structure fully collects the lubricating oil and transports it to the slave transmission part and the right bearing of the differential for full lubrication.

In a third aspect, the present application provides a power assembly, comprising a reducer as described in any embodiment of the second aspect of the present application.

In a fourth aspect, the present application provides a vehicle comprising a powertrain as described in the embodiment of the third aspect of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

FIG1 is a structural schematic diagram 1 of a reducer provided by an embodiment of the present application;

FIG2 is a second structural schematic diagram of a reducer provided in an embodiment of the present application;

FIG. 3 is a schematic diagram of an oil retaining structure provided in an embodiment of the present application.

Reference numerals:

1-reducer; 11-oil retaining structure; 100-main body; 110-oil collecting trough; 111-through hole; 112-collecting section; 113-conical guide section; 1131-first guide channel; 1132-second guide channel; 1133-third guide channel; 114-raised portion; 120-support plate; 1201-installation portion; 1202-bearing ring section; 1203-notch; 130-guide transmission member; 200-guide portion; 210-slide; 211-first slide; 212-second slide; 213-third slide; 220-baffle; 12-transmission assembly; 121-main transmission member; 122-slave transmission member; 13-differential bearing; 131-left differential bearing; 132-right differential bearing.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

Reference to "embodiment" in this application means that a particular feature, structure or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

The term "and/or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this application generally indicates that the associated objects before and after are in an "or" relationship.

In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

The “plurality” that appears in the embodiments of the present application refers to more than two (including two).

In the embodiment of the present application, the reducer is an important part of the power transmission system of the passenger car, the differential is located inside the reducer, and the reducer can be installed on the vehicle body or frame. On the basis of transmitting torque, the reducer can reduce the speed, increase the torque, and change the transmission direction of the power output by the transmission.

The differential distributes driving force to the left and right half-axles and allows the half-axles on both sides to rotate at different speeds, reducing sliding wear between the vehicle's drive wheels and the ground.

The half shaft, also known as the drive shaft, is installed between the differential and the drive wheel. Its function is to transfer power to the drive wheel.

It is understandable that the reducer plays the role of reducing the speed and increasing the torque; the differential in the reducer improves the vehicle's turning performance and reduces abnormal wear of the drive wheel tires through its internal differential movement. In the reducer, the power is transmitted from the active bevel gear to the driven bevel gear, and then transmitted to the half shafts on both sides through the differential, driving the half shafts and the drive wheels to rotate, achieving different speeds for the left and right drive wheels.

In the reducer of a passenger car, each moving part needs lubricating oil to reduce friction and wear. During the transmission process of each part, the lubricating oil usually forms a protective film between the moving parts to reduce the friction coefficient of each part, making the transmission of each part smoother and extending the service life of the reducer.

Since the left differential bearing and the right differential bearing are respectively arranged on both sides of the transmission component of the reducer, and due to the influence of the reducer assembly structure layout, the distance between the right differential bearing and the driven bevel gear is farther than that between the left differential bearing and the driven bevel gear, the splashing lubricating oil is difficult to reach the right differential bearing, resulting in unsatisfactory lubrication effect of the right differential bearing.

In order to solve the problem of unsatisfactory lubrication effect of lubricating oil on the right bearing of the differential, the present application provides an oil retaining structure in the reducer to transfer the splashed lubricating oil to the top of the differential bearing through the oil retaining structure, thereby improving the unsatisfactory lubrication effect of the right bearing of the differential caused by the structural design of the reducer, thereby improving the lubrication effect of the differential bearing and improving the working efficiency of the differential.

Please refer to Figures 1 and 2, the reducer 1 includes: a housing, an oil retaining structure 11, a transmission component 12, and a differential bearing 13; the oil retaining structure 11 is installed on the housing and is located between the transmission component 12 and the differential bearing 13, and the differential bearing 13 is connected to the transmission component 12; when the transmission component 12 runs and causes the lubricating medium to splash, at least part of the lubricating medium splashes onto the oil retaining structure 11 and is transferred to the transmission component 12 and the differential bearing 13 through the oil retaining structure 11.

Lubricating media can be divided into lubricating oil, lubricating grease and solid lubricant according to their physical state and characteristics. In this embodiment, lubricating oil is used as an example of the lubricating medium. The oil retaining structure 11 can be fixedly mounted on the housing. When the transmission assembly 12 runs at high speed, the oil retaining structure 11 can always remain fixed. The transmission assembly 12 is connected to the differential bearing 13. By setting the oil retaining structure 11, when the transmission assembly 12 runs at high speed, the lubricating oil entering the housing is stirred into the entire reducer 1. Part of the lubricating oil can be directly splashed onto the transmission assembly, and part of the lubricating oil can be splashed onto the oil retaining structure 11 and gathered. The oil retaining structure 11 then transfers the lubricating oil to the transmission assembly 12 and the differential bearing 13 to further lubricate the transmission assembly 12 and the differential bearing 13, thereby improving the lubrication effect of the transmission assembly 12 and the differential bearing 13.

It should be noted that an oil inlet may be provided on the outer shell of the reducer 1 so as to inject lubricating oil into the shell through the oil inlet.

In some embodiments, the transmission assembly 12 includes: a main transmission member 121 and a slave transmission member 122 , and the main transmission member 121 and the slave transmission member 122 are meshed for transmission.

As an embodiment of the transmission assembly 12, the main transmission member 121 and the slave transmission member 122 can be gear transmission. The main transmission member 121 can be a driving bevel gear, and the slave transmission member 122 can be a driven bevel gear. The driving bevel gear and the driven bevel gear rely on mutually meshing gears to transmit power and motion. In this embodiment, the gear transmission of the driving bevel gear and the driven bevel gear is used for power transmission between intersecting shafts, and the transmission is smoother and the transmission efficiency is improved.

As another embodiment of the transmission assembly 12, the main transmission member 121 and the slave transmission member 122 can be driven by worm gears. The main transmission member 121 can be a worm, and the slave transmission member 122 can be a turbine. The worm gear structure is used to transmit motion and power between two staggered shafts.

The transmission assembly 12 in the present application may adopt a transmission mode of a master-slave bevel gear and a driven bevel gear.

In some embodiments, the differential bearing 13 includes: a left differential bearing 131 and a right differential bearing 132 ; the left differential bearing 131 and the right differential bearing 132 are respectively disposed on both sides of the slave transmission member 122 .

In this embodiment, the differential bearing 13 connected to the left side of the slave transmission member 122 is defined as a left differential bearing 131 , and the differential bearing 13 connected to the right side of the slave transmission member 122 is defined as a right differential bearing 132 .

In some embodiments, planetary gears, side gears, and planetary gear shafts are usually disposed inside the differential between the left differential bearing 131 and the right differential bearing 132. The rotation speeds of the left and right side axles are changed by meshing transmission of the planetary gears and side gears, thereby achieving different rotation speeds of the drive wheels. The structures of the planetary gears, side gears, and planetary gear shafts may adopt those in the prior art, and will not be described in detail herein.

The main body of the oil retaining structure 11 is located on the slave transmission member 122, and the guide portion of the oil retaining structure 11 extends to the right differential bearing 132. As mentioned above, the oil retaining structure 11 is fixed on the housing and can be located on one side of the slave transmission member 122. The guide portion of the oil retaining structure 11 extends above the right differential bearing 132. Lubricating oil is added to the reducer 1 from the oil inlet, and a part of the lubricating oil acts on the transmission assembly 12. Through the high-speed operation of the transmission assembly 12, a part of the lubricating oil is stirred and splashed onto the oil retaining structure 11. The lubricating oil is collected by the oil retaining structure 11 located above the slave transmission member 122, and the lubricating oil is transported to the right differential bearing 132 through the oil retaining structure 11 to achieve lubrication of the right differential bearing 132.

In order to achieve a better lubrication effect on the right differential bearing 132, please continue to refer to Figures 1, 2 and 3. The present application provides an oil retaining structure 11, including: a main body 100 and a guide part 200; the main body 100 is installed on the housing of the reducer 1, one end of the guide part 200 is arranged on the main body 100, and the other end extends to one side of the differential bearing 13 of the reducer 1. The lubricating medium splashes through the operation of the transmission assembly 12 in the reducer 1 to the main body 100 for collection, and is transported to the differential bearing 13 through the guide part 200.

As mentioned above, the lubricating medium takes lubricating oil as an example, and the oil retaining structure 11 is composed of two parts, wherein the main body 100 can be used to connect to the housing and collect the lubricating oil, and the guide part 200 plays the role of transferring and conveying the lubricating oil. The main body 100 is arranged on the side of the slave transmission member 122 of the transmission assembly 12, and the guide part 200 extends from the slave transmission member 122 to the top of the right bearing 132 of the differential. A part of the lubricating oil entering the reducer 1 acts on the transmission assembly 12, and a part of the lubricating oil is stirred and splashed onto the main body 100 of the oil retaining structure 11 through the high-speed operation of the transmission assembly 12. The lubricating oil is collected by the oil retaining structure 11 located above the slave transmission member 122, and the collected lubricating oil flows to the differential bearing 13 through the guide part 200 to lubricate the differential bearing 13, so that the lubricating oil can be fully utilized, the loss of lubricating oil is reduced, and the working efficiency of the transmission assembly 12 and the differential bearing 13 in the reducer 1 is improved.

Furthermore, the main body 100 includes: an oil collecting tank 110 and a support plate 120, the oil collecting tank 110 is connected to the support plate 120, the guide part 200 is connected to the oil collecting tank 110, and the support plate 120 at least partially envelops the portion where the differential bearing 13 is connected to the transmission assembly 12.

In this embodiment, the main body 100 is composed of two parts, wherein the main function of the oil collecting tank 110 is to collect lubricating oil, and the function of the support plate 120 is to install and fix the oil retaining structure 11 so that the oil retaining structure 11 can be firmly fixed on the housing. The support plate 120 is installed on the housing, and a part of the envelope cover is arranged at the position where the differential bearing 13 is connected to the transmission assembly 12, separating the lubricating oil in the support plate 120 from the lubricating oil pool in the inner cavity of the reducer, so that the differential bearing 13 is less stirred during operation, thereby reducing the oil stirring loss and improving the lubrication efficiency of the system.

In some embodiments, the support plate 120 includes: a mounting portion 1201 and a bearing ring portion 1202 , the mounting portion 1201 is used to be connected to the housing of the reducer 1 , and the bearing ring portion 1202 is connected to the mounting portion 1201 .

In this embodiment, the mounting portion 1201 and the housing of the reducer 1 can be connected by bolt connection, welding, bonding, etc., so as to achieve the connection and fixation between the mounting portion 1201 and the housing. When the mounting portion 1201 and the housing of the reducer 1 are connected by bolts, the mounting portion 1201 and the housing of the reducer 1 can be fixed by setting a plurality of mounting holes on the mounting portion 1201 and setting a plurality of mounting holes at corresponding positions on the housing, and passing bolts through the mounting holes on the mounting portion 1201 and the mounting holes at corresponding positions on the housing.

The load-bearing ring segment 1202 and the mounting portion 1201 may be two independent components, which are connected by welding or bolts. In other embodiments, the load-bearing ring segment 1202 and the mounting portion 1201 may be integrally formed.

In some embodiments, the end of the load-bearing ring segment 1202 connected to the mounting portion 1201 converges to the end of the load-bearing ring segment 1202 away from the mounting portion 1201. It can be seen from FIG. 2 and FIG. 3 that the load-bearing ring segment 1202 has an arc-shaped ring segment, and the load-bearing ring segment 1202 protrudes from the end close to the mounting portion 1201 along the axial direction of the differential bearing 13 to the end away from the mounting portion 1201, and gradually converges to the side of the right differential bearing 132. The envelope cover of the load-bearing ring segment 1202 is arranged at the part where the differential bearing 13 is connected to the transmission assembly 12, and a certain gap is left between the mounting portion 1201 and the part where the differential bearing 13 is connected to the transmission assembly 12. Under the premise of satisfying the normal high-speed operation of the transmission assembly 12 to stir and lubricate the lubricating oil, the problem of the lubricating oil flowing back from the transmission member 122 can be reduced, thereby reducing the actual lubricating oil liquid level and reducing the loss of lubricating oil.

In some embodiments, a notch 1203 is provided on the bearing ring portion 1202 , and the notch 1203 is used to provide an escape space for the operation of the transmission assembly 12 in the reducer 1 .

As shown in FIG2 , the main transmission member 121 is located on one side of the slave transmission member 122, and the movement of the main transmission member 121 drives the rotation of the slave transmission member 122 meshed therewith. Therefore, when the oil retaining structure 11 is installed on the housing of the reducer, considering that the meshing transmission of the main transmission member 121 and the slave transmission member 122 will occupy a certain space, the support plate 120 of the oil retaining structure 11 is set to have a structure with a notch 1203, and the notch 1203 is used to provide movement space for the transmission of the main transmission member 121, thereby providing space for the meshing transmission of the main transmission member 121 and the slave transmission member 122, without affecting the meshing transmission of the transmission assembly, and the oil retaining structure 11 does not interfere with the transmission assembly 12.

In some embodiments, the size of the notch 1203 can be set according to the structure, size, model and other parameters of the main transmission member 121, as well as the structural design requirements of the reducer 1. As an example, the size of the notch 1203 can account for 1/4 of the size of the ring structure of the support plate, and the support plate 120 can be designed into a hook-shaped structure (as shown in FIG. 3).

In order to facilitate the lubricating oil to flow more smoothly from the oil collecting tank 110 to the guide part 200 so that the guide part 200 can smoothly transport the lubricating oil to the right differential bearing 132, in some embodiments, the oil collecting tank 110 is provided with a through hole 111, and one end of the guide part 200 is arranged at the bottom of the oil collecting tank 110 and is connected to the through hole 111.

In this embodiment, the guide part 200 is arranged at the bottom of the oil collecting tank 110, which can reduce the space occupied by the guide part 200 and the oil collecting tank 110 when they are connected. When the space utilization requirement in the reducer 1 is high, the volume of the oil retaining structure 11 can be reduced as much as possible. Secondly, the oil collecting tank 110 is provided with a through hole 111 for the circulation of lubricating oil, so that the lubricating oil splashed into the oil collecting tank 110 can be quickly transferred to the guide part 200, and transported to the right differential bearing 132 in time through the guide part 200 to lubricate the right differential bearing 132.

Furthermore, in order to improve the collection efficiency of lubricating oil, in some embodiments, the oil collecting tank 110 includes: a collecting section 112 and a conical guide section 113 ; the conical guide section 113 is connected to the collecting section 112 , and the through hole 111 is provided on the conical guide section 113 .

Since the splashing of lubricating oil in the reducer 1 is an irregular flow, in order to improve the collection efficiency of the oil collecting tank 110, the oil collecting tank 110 is designed as a two-part structure, including a collecting section 112 and a conical guide section 113, wherein the collecting section 112 is used to collect the splashing lubricating oil, and the conical guide section 113 is used to guide the lubricating oil collected by the collecting section 112 to the through hole 111 in time, so that the lubricating oil enters the guide part 200 through the through hole 111 and is transported to the right bearing 132 of the differential.

Considering the influence of the gravity of the lubricating oil, the conical guide section 113 is set to be inclined, such as a "funnel". When a large amount of lubricating oil splashes to the collecting section 112, it will be concentrated in the collecting section 112 for a period of time. Of course, there will be a part of the lubricating oil directly gathered on the conical guide section 113 and flow along the inclined surface of the conical guide section 113 to the through hole 111. There will also be a part of the lubricating oil directly splashed on the guide part 200, and transported by the guide part 200 to the right differential bearing 132. Therefore, the conical guide section 113 also plays a buffering transmission role for the lubricating oil to a certain extent, and the lubricating oil in the collecting section 112 can flow to the through hole 111 through the inclined conical guide section 113.

In some embodiments, a protrusion 114 is provided on the conical guide section 113 located at the via 111, and the protrusion 114 separates the conical guide section 113 into a first guide channel 1131 and a second guide channel 1132, wherein one end of the first guide channel 1131 is connected to the collecting section 112, and the other end is connected to one end of the second guide channel 1132, and the other end of the second guide channel 1132 is connected to the via 111.

As mentioned above, as the rotation speed of the transmission component 12 increases, the rate of lubricating oil splashing increases under the condition of high rotation of the transmission component 12. When a large amount of splashed lubricating oil splashes to the collecting section 112, it will be concentrated in the collecting section 112 for a period of time. When the lubricating oil flows through the guide part 200 inside the through hole 111, it is very likely to be congested at the through hole 111, causing the lubricating oil to flow poorly at the through hole 111. In order to divert the lubricating oil flowing in the through hole, in this embodiment, a protrusion 114 is provided on the conical guide section 113 at the through hole 111, and the protrusion 114 divides the conical guide section 113 into two channels, namely, a first guide channel 1131 and a second guide channel 1132. The lubricating oil splashed to the collection section 112 first flows through the first guide channel 1131, flows into the second guide channel 1132 after the slow flow of the first guide channel 1131, and then flows from the second guide channel 1132 to the through hole 111, and flows out from the through hole 111 to the guide portion 200. By providing the first guide channel 1131 and the second guide channel 1132, the lubricating oil can be guided into the through hole 111, which plays a certain role in buffering and diverting, and improves the congestion of the liquid flow formed at the through hole 111 when the lubricating oil flows directly to the through hole 111.

It should be noted that since the first guide channel 1131 and the second guide channel 1132 are both located in the conical guide section 113 , the first guide channel 1131 and the second guide channel 1132 are both inclined, and the lubricating oil can flow along the first guide channel 1131 and the second guide channel 1132 to the through hole 111 .

The oil retaining structure 11 of the present application can not only deliver lubricating oil to the right differential bearing 132, but also deliver lubricating oil to the main transmission member 121. Furthermore, the oil collecting tank 110 also includes: a third guide channel 1133. One end of the third guide channel 1133 is connected to the conical guide section 113, and the other end of the third guide channel 1133 is inclined toward the transmission assembly 12 in the reducer 1.

The third guide channel 1133 is connected to the conical guide section 113 and is used to transport the lubricating oil collected in the collecting section 112 through the conical guide section 113 and transfer it to the main transmission member 121 to achieve lubrication of the main transmission member 121 .

In some embodiments, the third guide channel 1133 is inclined in the direction of the main transmission member 121, so that the lubricating oil can flow smoothly to the top of the main transmission member 121. The transmission assembly 12 rotates at a high speed, and the lubricating oil is stirred by the transmission assembly 12, and a part of the lubricating oil splashes into the collecting section 112. Part of the lubricating oil first flows through the first guide channel 1131, flows into the second guide channel 1132 after buffering adjustment of the first guide channel 1131, and then flows from the second guide channel 1132 to the through hole 111, and flows out from the through hole 111 to the guide part 200, and the lubricating oil is transported to the right differential bearing 132 through the guide part 200 to achieve lubrication of the right differential bearing 132. Part of the lubricating oil flows along the third guide channel 1133 to the top of the main transmission member 121, and flows along the main transmission member 121 to between the inner bearing and the outer bearing of the main transmission member 121, thereby lubricating the main transmission member 121, and finally achieving the effect of lubricating each component in the reducer 1, thereby improving the working efficiency of the reducer.

In some embodiments, an oil return hole may be provided on the housing on one side of the main transmission member 121, through which excess lubricating oil may be discharged.

Considering the structural differences such as the size and model of the transmission assembly 12 in the reducer 1, in some cases, the length of the third flow guiding channel 1133 cannot meet the requirement of extending above the main transmission member 121. Therefore, in some embodiments, the end of the third flow guiding channel 1133 away from the conical flow guiding section 113 is further connected to the flow guiding transmission member 130.

As an example, the flow-guiding transmission member 130 may be a structure for conveying lubricating oil, such as a hose, a leather hose, or a conduit. The flow-guiding transmission member 130 may be connected to the third flow-guiding channel 1133 by means of a snap, a bolt connection, or the like, and the other end of the flow-guiding transmission member 130 extends toward the main transmission member 121 and may be located above the main transmission member 121. By providing the flow-guiding transmission member 130, the length of the third flow-guiding channel 1133 may be lengthened without increasing the volume of the oil-blocking structure 11, thereby conveying the lubricating oil to the main transmission member 121, and fully lubricating the main transmission member 121.

Further, as shown in FIG. 3 , the guide portion 200 includes: a slide 210 and a baffle 220 . One end of the slide 210 is connected to the main body 100 , and the baffle 220 is disposed on both sides of the edge of the slide 210 along the length direction.

In this embodiment, the baffle 220 serves to block the lubricating oil in the slide 210, so that the lubricating oil delivered from the through hole 111 can flow along the slide 210 to the position of the right differential bearing 132, so that part of the lubricating oil can quickly flow through the slide 210 to the right differential bearing 132 for lubrication.

In some embodiments, the slideway 210 includes: a first slideway 211, a second slideway 212 and a third slideway 213; the first slideway 211 is connected to the main body 100, the second slideway 212 is connected to the first slideway 211, and the third slideway 213 is connected to the second slideway 212. The first slideway 211 is a straight section, the second slideway 212 is an inclined section, the third slideway 213 is a straight section, and the width of the first slideway 211 is greater than the width of the third slideway 213.

In this embodiment, the slide 210 is arranged as a three-section structure, wherein the first slide 211 is connected to the bottom of the conical guide section 113 and is located at the through hole 111. The first slide 211 is used to guide the lubricating oil flowing out of the through hole 111 to the second slide 212. The first slide 211 is a straight section, that is, the width of the first slide 211 along the direction of the lubricating oil flow is the same and unchanged.

The second slide 212 is connected to the first slide 211. The second slide 212 is an inclined section. One end of the second slide 212 is inclined and converges toward the direction of the third slide 213. The inclined section of the second slide 212 can reduce the resistance during the flow of lubricating oil.

The width of the first slide 211 is relatively large, and the width of the third slide 213 is relatively small relative to the first slide 211. The resistance of the lubricating oil when passing through the first slide 211 with a large width is small and the flow rate is faster. Under the contraction effect of the second slide 212, the speed of the lubricating oil is reduced. After deceleration, the lubricating oil continues to flow to the third slide 213 with a smaller width. At this time, the lubricating oil in the third slide 213 encounters greater resistance and the flow rate is further reduced, so that the lubricating oil can flow evenly and fully to the right bearing 132 of the differential.

In summary, the present application can effectively collect splashed lubricating oil by setting up the oil retaining structure 11, and transport the lubricating oil to the right differential bearing 132 and the main transmission member 121, thereby achieving effective lubrication of the right differential bearing 132 and the main transmission member 121. The setting of the oil retaining structure 11 helps distribute the lubricating oil, reduces the lubricating oil demand of the reducer, and improves the overall efficiency of the reducer.

The use process of the oil retaining structure 11 of the present application is as follows:

Lubricating oil is injected into the reducer 1, and the main transmission member 121 of the transmission assembly 12 starts to drive and rotate. The rotation of the main transmission member 121 drives the slave transmission member 122 meshing therewith to rotate. The lubricating oil splashes in the reducer 1 under the stirring action of the high-speed rotating transmission assembly 12, and part of the lubricating oil splashes onto the collecting section 112 of the oil retaining structure 11. The lubricating oil flows along the first guide channel 1131, flows into the second guide channel 1132 after the slow flow through the first guide channel 1131, and then flows from the second guide channel 1132 to the through hole 111, and flows out from the through hole 111 to the guide part 200.

The lubricating oil flowing into the guide portion 200 continues to flow from the first slideway 211 to the second slideway 212 and the third slideway 213 , and finally flows into the right differential bearing 132 , thereby fully lubricating the right differential bearing 132 .

At the same time, part of the lubricating oil flows along the third guide channel 1133 to the guide transmission member 130, flows to the main transmission member 121 through the guide transmission member 130, and flows along the main transmission member 121 to between the inner bearing and the outer bearing of the main transmission member 121, thereby lubricating the main transmission member 121.

Another part of the lubricating oil will directly splash onto the guide portion 200 , and flow through the first slideway 211 to the second slideway 212 and the third slideway 213 , and finally flow into the right differential bearing 132 , so as to fully lubricate the right differential bearing 132 .

The present application also discloses a power assembly, which includes the reducer 1 described in the above embodiment.

After the reducer 1 of this structure is arranged in the powertrain, when the reducer 1 is running, due to the arrangement of the oil retaining structure 11, part of the lubricating oil stirred up by the transmission assembly 12 can be collected in the oil collecting groove 110 of the oil retaining structure 11, and flow to the through hole 111 through the first guide channel 1131 and the second guide channel 1132 respectively, and transported to the guide part 200 by the through hole 111, and then transported to the right bearing 132 of the differential by the guide part 200, so as to fully lubricate the right bearing 132 of the differential; at the same time, part of the lubricating oil is transported to the main transmission member 121 through the third guide channel 1133, and can also fully lubricate the main transmission member 121. While lubricating, lubricating oil is saved, and the loss of lubricating oil is effectively reduced.

In addition, the provision of the oil retaining structure 11 can also reduce the amount of lubricating oil reflux at the bottom of the oil pool and reduce oil stirring losses.

Based on the same technical concept, the present application also discloses a vehicle, which includes the powertrain described in the above embodiment.

After this powertrain is installed in a vehicle, when the vehicle starts the powertrain to work, when the reducer 1 of the powertrain is in operation, the lubricating oil entering the reducer 1 can be fully stirred and splashed onto the oil retaining structure 11, and part of the lubricating oil is collected in the oil collecting groove 110 of the oil retaining structure 11, and flows to the through hole 111 through the first guide channel 1131 and the second guide channel 1132 respectively, and is transported from the through hole 111 to the guide part 200, and then transported from the guide part 200 to the right bearing 132 of the differential, so as to fully lubricate the right bearing 132 of the differential; at the same time, part of the lubricating oil is transported to the main transmission component 121 through the third guide channel 1133, and can also fully lubricate the main transmission component 121, while lubricating, the lubricating oil is saved, and the loss of the lubricating oil is effectively reduced.

In some embodiments, the vehicle may include various models such as traditional passenger cars, hybrid passenger cars, and electric passenger cars.

It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of this requirement.

Claims (15)

1. An oil retaining structure, comprising: a main body part and a flow guiding part; the main body part is installed on the casing of reduction gear, the one end of water conservancy diversion portion is located on the main body part, the other end extends to the differential mechanism bearing side of reduction gear, the lubricating medium passes through drive assembly's operation in the reduction gear splashes to the main body part is collected, and through water conservancy diversion portion carries to differential mechanism bearing.

2. The oil deflector structure of claim 1, wherein the main body portion comprises: the oil collecting groove is connected with the supporting plate, the flow guiding part is connected with the oil collecting groove, and the supporting plate is at least partially covered and covered at the connecting part of the differential bearing and the transmission assembly.

3. The oil baffle structure according to claim 2, wherein the oil collecting groove is provided with a through hole, and one end of the flow guiding part is arranged at the bottom of the oil collecting groove and is communicated with the through hole.

4. An oil baffle structure as set forth in claim 3 wherein said oil sump includes: a collection section and a conical diversion section; the conical flow guiding section is connected with the collecting section, and the through hole is formed in the conical flow guiding section.

5. The oil baffle structure according to claim 4, wherein a protruding portion is provided on the tapered flow guiding section located at the through hole, the protruding portion divides the tapered flow guiding section into a first flow guiding channel and a second flow guiding channel, one end of the first flow guiding channel is connected with the collecting section, the other end is connected with one end of the second flow guiding channel, and the other end of the second flow guiding channel is communicated with the through hole.

6. The oil baffle structure as set forth in claim 4 or 5, wherein the oil sump further comprises: a third flow directing channel; one end of the third diversion channel is connected with the conical diversion section, and the other end of the third diversion channel is obliquely arranged towards one side of the transmission assembly in the speed reducer.

7. The oil retaining structure of claim 6, wherein an end of the third flow channel remote from the tapered flow segment is further connected to a flow guide transmission member.

8. The oil baffle structure as claimed in claim 2, wherein the support plate includes: the mounting part is used for being connected with the shell of the speed reducer, the bearing ring part is connected with the mounting part, a notch is arranged in the supporting plate and used for providing avoidance space for the operation of the transmission assembly in the speed reducer.

9. The oil deflector structure of claim 8, wherein an end of the carrier ring portion connected to the mounting portion converges toward an end of the carrier ring portion remote from the mounting portion.

10. The oil deflector of claim 1, wherein the deflector comprises: slide and baffle, the one end of slide with main part is connected, the baffle sets up the slide is along length direction's edge both sides.

11. The oil deflector structure of claim 10, wherein the slide comprises: the first slideway, the second slideway and the third slideway; the first slideway is connected with the main body part, the second slideway is connected with the first slideway, and the third slideway is connected with the second slideway; the first slide way is a straight section, the second slide way is an inclined folding section, the third slide way is a straight section, and the width of the first slide way is larger than that of the third slide way.

12. A speed reducer, characterized by comprising: a housing; a transmission assembly; a differential bearing connected to the drive assembly; and an oil retaining structure as claimed in any one of claims 1 to 11, mounted on the housing and located between the transmission assembly and the differential bearing so that when the transmission assembly is operated to cause the lubricating medium to splash, at least part of the lubricating medium splashes onto the oil retaining structure and is transferred to the transmission assembly and the differential bearing by the oil retaining structure.

13. The speed reducer of claim 12, wherein the transmission assembly comprises: the main transmission piece and the auxiliary transmission piece are meshed for transmission; the differential bearing includes: a differential left bearing and a differential right bearing; the differential left bearing and the differential right bearing are respectively arranged on two sides of the driven transmission member, the main body part of the oil blocking structure is positioned on one side of the driven transmission member, and the flow guiding part of the oil blocking structure extends to the differential right bearing.

14. A powertrain comprising a decelerator as claimed in any one of claims 12 to 13.

15. A vehicle is characterized in that, comprising a locomotion assembly according to claim 14.