CN221462907U - Speed reducer, driving assembly and vehicle - Google Patents

Abstract

The present application provides a speed reducer, comprising: a case, a differential case, and an oil guide member; the oil guide component and the differential mechanism shell are both arranged in the box body; the differential mechanism shell is internally provided with a cavity for accommodating the differential transmission mechanism, the differential mechanism shell is provided with a through hole for accommodating the half shaft, and the through hole is communicated with the cavity; the oil guide part is located the opening side that the through-hole deviates from the cavity, and the oil guide part has the oil guide district, and the oil guide district is including the first entry that supplies lubricating oil to get into and the first export that supplies lubricating oil to flow out, first export and through-hole intercommunication. According to the speed reducer, the oil guide part structure is arranged in the box body, lubricating oil in the box body enters the oil guide part, the lubricating oil is guided into the through hole communicated with the cavity in the differential case through the oil guide area in the oil guide part, and oil flows into the differential case through centrifugal movement under the condition that the differential case rotates at a high speed, so that all structures in the differential case can be well lubricated finally.

Description

Speed reducer, driving assembly and vehicle

Technical Field

The utility model relates to the technical field of speed reducers, in particular to a speed reducer, a driving assembly and a vehicle.

Background

The differential is an important component of an automobile driving assembly, and the main function of the differential is to realize that left and right driving wheels roll at different rotation speeds when the automobile turns or runs on uneven road surfaces and the like. Currently, the lubrication problem of the differential is prominent, and the abnormal wear caused by insufficient lubrication between the internal friction pairs is mainly represented, including wear between the cross shaft and the planet wheel mounting hole, wear between the planet wheel end face and the gasket, wear between the gasket and the inner surface of the differential case, and the like. Further, abnormal wear inside the differential will cause variation in the fit clearances between the related parts, thereby causing problems such as uneven gear load distribution, abnormal noise, and the like.

The related art often realizes that lubricating oil enters the differential from the inside of the speed reducer through oil holes or designed oil passages on the differential case. However, due to the existence of centrifugal force in the working process of the differential mechanism, when the vehicle speed is higher, the lubricating oil in the differential mechanism flows out through the oil hole or the oil duct under the action of the centrifugal force, so that the lubricating oil quantity of the gears in the differential mechanism is less, and the lubricating effect is poor.

Disclosure of utility model

In view of the above-described drawbacks or deficiencies of the prior art, it is desirable to provide a reduction gear, a drive assembly and a vehicle that address at least one of the above-described problems.

In a first aspect of the present application, there is provided a speed reducer including a case, a differential case, and an oil guide member; the oil guide component and the differential mechanism shell are both arranged in the box body; the differential mechanism shell is internally provided with a cavity for accommodating the differential transmission mechanism, the differential mechanism shell is provided with a through hole for accommodating the half shaft, and the through hole is communicated with the cavity; the oil guide part is located the opening side that the through-hole deviates from the cavity, and the oil guide part has the oil guide district, and the oil guide district is including the first entry that supplies lubricating oil to get into and the first export that supplies lubricating oil to flow out, first export and through-hole intercommunication.

As an achievable mode, the speed reducer further comprises an oil receiving component and an oil passing component; the oil receiving part is arranged in the box body and is provided with an oil receiving area which is suitable for receiving lubricating oil splashed in the box body, the oil passing part is provided with an oil passing area, and the oil receiving area is communicated with a first inlet of the oil guiding area through the oil passing area.

As a practical way, the oil receiving area has an opening arranged in a direction towards the top of the tank.

As an achievable mode, the box body is provided with a first half-shaft hole which is communicated with the box body and used for the half shaft to pass through, and a bearing chamber is formed on one side of the first half-shaft hole, which is close to the box body, of the box body; the speed reducer further comprises a bearing, the bearing is arranged in the bearing chamber, the differential housing comprises a first part which surrounds a through hole, the first part is supported on the inner wall of the box body through the bearing, and the through hole and the first half shaft hole are coaxially arranged; the inner wall of the bearing chamber is provided with a groove body extending along the axial direction of the first half shaft hole, and the oil passing component is positioned in the groove body.

As an achievable mode, the speed reducer further comprises an oil collecting part, the oil collecting part is provided with an oil collecting area for storing lubricating oil, the oil collecting area is communicated with a first inlet of the oil guiding area, and the oil receiving area is communicated with the first inlet of the oil guiding area through the oil passing area and the oil collecting area in sequence; the oil collecting component is positioned in the first half shaft hole, and the oil guide component is positioned between the oil collecting component and the first part.

As an achievable way, the oil collecting part comprises a first bottom plate, a first baffle plate and a second baffle plate; the first bottom plate extends along the circumferential direction of first half shaft hole, and first bottom plate pastes and establishes on first half shaft hole inner wall, and first baffle and second baffle set up along the axial direction interval in first half shaft hole, and first baffle and second baffle are connected respectively on the edge of first bottom plate, and the oil collection district is enclosed by first bottom plate, first baffle and second baffle.

As an achievable mode, the second baffle is arranged between the first baffle and the first part, the oil guide part is arranged on the second baffle, the oil guide part comprises a second bottom plate arranged on the second baffle, the second bottom plate extends along the circumferential direction of the first half shaft hole, the second bottom plate is arranged in the through hole, the oil guide area is surrounded by the second bottom plate, the first inlet is formed on the edge, adjacent to one side of the second baffle, of the second bottom plate, the first outlet is formed on the edge of the other side of the second bottom plate, and a through hole for communicating the first inlet and the oil collecting area is formed in the second baffle.

As an achievable manner, the first bottom plate, the first baffle, the second baffle, and the second bottom plate are integrally formed.

As an achievable mode, the oil collecting part further comprises a protruding structure, the protruding structure is formed on one side face, close to the bearing, of the second baffle, and the protruding structure abuts against the bearing outer ring.

As an achievable mode, the convex structure, the first bottom plate, the first baffle, the second baffle and the second bottom plate are integrally formed.

In a second aspect of the application, there is provided a drive assembly comprising the decelerator of the first aspect.

In a third aspect of the application, there is provided a vehicle comprising the drive assembly of the second aspect.

The application provides a speed reducer, a driving assembly and a vehicle, wherein an oil guide part structure is arranged in a box body, lubricating oil in the box body enters the oil guide part, the lubricating oil is guided into a through hole communicated with a cavity in a differential case through an oil guide area in the oil guide part, and the oil flows into the differential through centrifugal motion under the condition that the differential rotates at a high speed, so that all structures in the differential can be lubricated better finally.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings;

FIG. 1 is a block diagram of an oil guide part provided by the application;

FIG. 2 is a cross-sectional view of a reduction gear provided by the present application;

FIG. 3 is a partial box structure diagram of a speed reducer provided by the application;

In the drawing the view of the figure,

10. A box body 11, a first half shaft hole 12, a bearing chamber 13 and a groove body,

20. Differential housing 21, cavity 22, through-hole 23, first portion,

30. An oil guiding part 31, an oil guiding area 32, a first inlet 33, a first outlet,

40. An oil receiving part, 41, an oil receiving area,

50. An oil passing part, 51, an oil passing area,

60. The bearing is provided with a plurality of grooves,

70. Oil collecting parts 71, first bottom plates 72, first baffle plates 73, second baffle plates 74, second bottom plates 75, protruding structures 76 and oil collecting areas.

Detailed Description

The present application will be described in further detail with reference to the drawings and embodiments. It is to be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art. It should be further noted that, for convenience of description, only the portions related to the present application are shown in the drawings.

In addition, the embodiments of the present application and the features of the embodiments may be combined with each other without collision. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In a first aspect, an embodiment of the present application provides a speed reducer including a case 10, a differential case 20, and an oil guide member 30. As shown in fig. 2, the oil guide member 30 and the differential case 20 are both disposed in the case 10, a cavity 21 is provided in the differential case 20, a differential transmission mechanism such as a side gear, a planetary gear shaft, an adjusting washer, etc. is provided in the cavity 21, and the differential case 20 is provided with a through hole 22 for accommodating the half shaft, and the through hole 22 communicates the oil guide member 30 with the cavity 21. The oil guiding member 30 is located at the opening side of the through hole 22 facing away from the cavity 21 so that lubricating oil can be introduced into the cavity 21 through the through hole 22 to lubricate the internal transmission structure of the differential, the oil guiding member 30 has an oil guiding region 31, the oil guiding region 31 includes a first inlet 32 into which lubricating oil enters and a first outlet 33 from which lubricating oil flows out, the first outlet 33 communicates with the through hole 22, the lubricating oil flows into the oil guiding region 31 through the first inlet 32, flows out of the oil guiding region 31 through the first outlet 33, and the first outlet 33 communicates with the through hole 22 so that the lubricating oil flowing out of the oil guiding region 31 enters into the through hole 22.

The lubricant enters the oil guiding area 31 through the first inlet 32 or through an oil path in the box 10, wherein the oil path may be connected with an oil pump to realize active oil supply, and the oil path may be connected with the box to allow the lubricant stirred by the gear to enter.

According to the speed reducer provided by the embodiment of the application, the oil guide part 30 is arranged in the box body 10, the lubricating oil in the box body 10 enters the oil guide part 30, the lubricating oil is guided into the through hole 22 communicated with the cavity 21 in the differential case 20 through the oil guide area 31 in the oil guide part 30, under the condition that the differential rotates at a high speed, the transmission mechanism in the cavity 21 rotates at a high speed, and as the differential case 20 is provided with the holes communicated with the interior of the box body 10 and the holes are positioned in the centrifugal force direction of the transmission mechanism, the transmission mechanism continuously throws the lubricating oil in the cavity 21 into the box body 10 through the holes, negative pressure is formed in the cavity 21, and the lubricating oil in the through hole 22 is sucked, so that the lubricating oil flows into the differential, and finally, all structures in the differential can be well lubricated.

The speed reducer provided by the embodiment of the application is particularly suitable for speed reducers with higher rotating speeds. Generally, the higher the rotation speed of the speed reducer, the higher the rotation speed of the transmission mechanism of the differential, and the more the lubricant flows out under the centrifugal force action of the lubricant transmission mechanism in the differential, so that the smaller the amount of lubricant in the differential, the poorer the lubrication effect. In the speed reducer provided by the embodiment of the application, the higher the rotating speed of the speed reducer is, the higher the rotating speed of the transmission mechanism of the differential mechanism is, the higher the negative pressure in the cavity 21 is, the better the lubricating oil suction effect is, so that the more the lubricating oil quantity in the cavity 21 is, and the lubricating effect of the transmission mechanism in the cavity 21 is ensured.

As an achievable manner, the speed reducer further includes an oil receiving part 40 and an oil passing part 50, the oil receiving part 40 having an oil receiving area 41 for receiving the lubricating oil splashed in the tank 10, the oil passing part 50 having an oil passing area 51, the oil receiving area 41 being in communication with the first inlet 32 of the oil guiding area 31 through the oil passing area 51 for guiding the lubricating oil received in the tank 10 to the oil guiding area 31.

As a practical way, the oil receiving area 41 has an opening provided toward the top of the tank 10 to receive more splashed lubricating oil. The top of the case 10 is the top in the height direction of the vehicle after the decelerator is mounted to the vehicle. When the gears agitate the lubricating oil, the lubricating oil generally splashes near the top of the tank 10 and falls back under the centrifugal force, and therefore, the oil receiving area 41 is opened toward the top of the tank 10, and more lubricating oil can be collected. As shown in fig. 1 and 2, the oil receiving area 41 may be a flat structure with one side open, or may be other structures capable of collecting splash lubrication oil, which is not limited herein.

As a realizable manner, as shown in fig. 3, the case 10 is provided with a first half shaft hole 11 communicating with the inside of the case 10 for passing the half shaft therethrough, a bearing chamber 12 is formed on a side of the first half shaft hole 11 adjacent to the inside of the case 10, and the oil guide member 30 is disposed in the first half shaft hole 11.

The speed reducer further comprises a bearing 60, the bearing 60 is arranged in the bearing chamber 12, the differential case 20 comprises a first part 23 surrounding a through hole 22, the first part 23 is supported on the inner wall of the case 10 through the bearing 60, and the through hole 22 and the first half shaft hole 11 are coaxially arranged, so that the inside of the case 10 is compact, and the differential case 20 and the oil guide part 30 are convenient to install.

Likewise, the differential case 20 also includes a second portion opposite the first portion, the second portion being supported on another bearing so that both sides of the differential case 20 are supported. In order to improve the lubrication effect, an additional oil guide member 30 may be disposed at a position corresponding to the second portion, so that the lubricant may enter the cavity 21 from the through holes 22 on both sides.

The inner wall of the bearing chamber 12 is provided with a groove body 13 extending along the axial direction of the first half shaft hole 11, the oil passing component 50 is positioned in the groove body 13, the fixing mode between the oil passing component 50 and the groove body 13 can be welding, riveting, bonding and bolting, and meanwhile, the groove body 13 is arranged on the inner wall of the bearing chamber 12, so that the inner space of the box body 10 is saved.

In other implementations, the oil passing member 50 may be embedded inside the housing, bypassing the bearing chamber 12, and connecting the oil guiding member 30 and the oil receiving member 40, respectively.

As an achievable way, the speed reducer further comprises an oil collecting part 70, the oil collecting part 70 is provided with an oil collecting area 76 for storing lubricating oil, the oil collecting area 76 is communicated with the first inlet 32 of the oil guiding area 31 and is used for guiding the stored lubricating oil to the oil guiding area 31, and the oil receiving area 41 is communicated with the first inlet 32 of the oil guiding area 31 through the oil passing area 51 and the oil collecting area 76 in sequence.

The lubricating oil stirred up in the box 10 falls into the oil receiving area 41, sequentially passes through the oil passing area 51 and the oil collecting area 76 and enters the oil guiding area 31, the lubricating oil enters the oil guiding area 31 through the first inlet 32, and the lubricating oil is guided into the differential mechanism by the oil guiding area 31, so that the lubrication of the differential mechanism is realized. The oil collecting part 70 can enable the speed reducer to store a part of lubricating oil under the low-rotation-speed working condition, so that when the speed reducer is switched to the high-rotation-speed working condition, the lubricating oil can be quickly supplemented into the oil guiding area 31, and the lubricating oil can be quickly introduced into the cavity 21 to lubricate the transmission mechanism.

The oil collecting member 70 is disposed in the first half shaft hole 11, and the oil collecting member 70 is fixed in the first half shaft hole 11 by welding, riveting, bonding, bolting, or the like, and the oil guiding member 30 is disposed between the oil collecting member 70 and the first portion 23, so that the oil guiding member 30 guides the lubricating oil stored in the oil collecting member 70 into the through hole 22 surrounded by the first portion 23.

As a realizable manner, as shown in fig. 1, the oil collecting member 70 includes a first bottom plate 71, a first baffle 72, and a second baffle 73, the first bottom plate 71 extends in the axial direction of the first half shaft hole 11, and the first bottom plate 71 is attached to the inner wall of the first half shaft hole 11, whereby the oil collecting member 70 is fixed with the first half shaft hole 11 by the first bottom plate 71. The first baffle plate 72 and the second baffle plate 73 are arranged at intervals along the axial direction of the first half shaft hole 11 and are used for blocking lubricating oil from flowing out of the oil collecting part 70, the first baffle plate 72 and the second baffle plate 73 are respectively connected to the edge of the first bottom plate 71, and the first baffle plate 72, the first bottom plate 71 and the second baffle plate 73 enclose an oil collecting area 76 for storing lubricating oil.

The integral arc-shaped oil collecting part 70 can realize the function of storing lubricating oil on one hand, and can not obstruct the half shaft to pass through on the other hand, and is suitable for being arranged in the limited space of the speed reducer to realize integration.

Wherein at least one of the first bottom plate 71, the first baffle 72 and the second baffle 73 is fixedly connected to the oil passing member 50, so that the oil collecting member 70 is fixed in position.

As a practical matter, the second baffle 73 is located between the first baffle 72 and the first portion 23, and the oil guide member 30 is disposed on the second baffle 73, and the second baffle 73 is located closer to the through hole 22, so that the lubrication oil is more easily introduced into the through hole 22.

The oil guide member 30 includes a second bottom plate 74 provided on the second baffle plate 73, the second bottom plate 74 extending in the axial direction of the first half shaft hole 11, the second bottom plate 74 being located in the through hole 22, the second bottom plate 74 being adapted to the shape of the through hole 22 so that the amount of lubricating oil entering into the through hole 22 is greater.

The oil guiding area 31 is surrounded by a second bottom plate 74, as shown in fig. 1, the first inlet 32 is formed on one side edge of the second bottom plate 74 adjacent to the second baffle plate 73, the first outlet 33 is formed on the other side edge of the second bottom plate 74, and the second baffle plate 73 is provided with a via hole for communicating the first inlet 32 and the oil collecting area 76. The first inlet 32 communicates with the oil collection area 76 for facilitating the entry of lubricating oil from the oil collection area 76 into the oil guiding area 31 surrounded by the second bottom plate 74, and the first outlet 33 is for guiding the lubricating oil out of the oil guiding area 31.

As a realizable manner, the first bottom plate 71, the first baffle 72, the second baffle 73 and the second bottom plate 74 are integrally formed, so that the oil guide member 30 is compact in structure and convenient to manufacture and process.

As a practical way, a protrusion structure 75 is formed on a side surface of the second baffle 73 adjacent to the bearing 60, and the protrusion structure 75 abuts against the outer ring of the bearing 60. The protrusion 75 serves to axially locate the oil guide 30 and prevent axial movement of the oil guide 30.

As a realizable manner, the protrusion structure 75, the first bottom plate 71, the first baffle 72, the second baffle 73 and the second bottom plate 74 are integrally formed, so that the oil guide member 30 is compact in structure and convenient to manufacture and process.

In a second aspect, embodiments of the present application provide a drive assembly comprising the motor of the first aspect. For example, the drive assembly may be a purely electric assembly or a hybrid powertrain.

In a third aspect, embodiments of the present application provide a vehicle comprising the drive assembly of the second aspect. For example, the vehicle may be an electric vehicle, a hybrid vehicle, a fuel-fired vehicle, or the like. Thus, the vehicle has all of the features and advantages of the electric assembly described above, and will not be described in detail herein. In general, the power system of the vehicle is reliable, stable in structure and long in service life.

It is to be understood that the above references to the terms "center", "axial", "circumferential", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

The above description is only illustrative of the preferred embodiments of the present utility model and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the utility model referred to in the present utility model is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present utility model (but not limited to) having similar functions are replaced with each other.

Claims (12)

1. A speed reducer, characterized by comprising: a case, a differential case, and an oil guide member;

the oil guide component and the differential case are both arranged in the case;

The differential mechanism comprises a differential mechanism shell, a differential mechanism and a driving mechanism, wherein a cavity for accommodating a differential transmission mechanism is formed in the differential mechanism shell, a through hole for accommodating a half shaft is formed in the differential mechanism shell, and the through hole is communicated with the cavity;

the oil guide part is positioned at the opening side of the through hole, which is away from the cavity, and is provided with an oil guide area, wherein the oil guide area comprises a first inlet for lubricating oil to enter and a first outlet for lubricating oil to flow out, and the first outlet is communicated with the through hole.

2. The speed reducer of claim 1, further comprising an oil receiving component and an oil passing component; the oil receiving part is arranged in the box body and is provided with an oil receiving area which is suitable for receiving lubricating oil splashed in the box body, the oil passing part is provided with an oil passing area, and the oil receiving area is communicated with a first inlet of the oil guiding area through the oil passing area.

3. A decelerator according to claim 2 wherein the oil receiving area has an opening disposed in a direction toward the top of the tank.

4. The speed reducer according to claim 2, wherein the case is provided with a first half shaft hole which communicates with the inside of the case and is used for a half shaft to pass through, and a bearing chamber is formed on one side of the first half shaft hole adjacent to the inside of the case;

The speed reducer further comprises a bearing, the bearing is arranged in the bearing chamber, the differential housing comprises a first part surrounding the through hole, the first part is supported on the inner wall of the box body through the bearing, and the through hole and the first half shaft hole are coaxially arranged;

The inner wall of the bearing chamber is provided with a groove body extending along the axial direction of the first half shaft hole, and the oil passing component is positioned in the groove body.

5. The speed reducer of claim 4, further comprising an oil collecting component, wherein the oil collecting component is provided with an oil collecting area for storing lubricating oil, the oil collecting area is communicated with a first inlet of the oil guiding area, and the oil receiving area is communicated with the first inlet of the oil guiding area through the oil passing area and the oil collecting area in sequence; the oil collecting component is positioned in the first half shaft hole, and the oil guide component is positioned between the oil collecting component and the first part.

6. The decelerator of claim 5, wherein the oil collection member comprises a first base plate, a first baffle plate, and a second baffle plate; the first bottom plate extends along the circumferential direction of the first half shaft hole, the first bottom plate is attached to the inner wall of the first half shaft hole, the first baffle and the second baffle are arranged at intervals along the axial direction of the first half shaft hole, the first baffle and the second baffle are respectively connected to the edge of the first bottom plate, and the oil collecting area is defined by the first bottom plate, the first baffle and the second baffle.

7. The speed reducer of claim 6, wherein the second baffle is located between the first baffle and the first portion, the oil guiding member is disposed on the second baffle, the oil guiding member includes a second bottom plate disposed on the second baffle, the second bottom plate extends along a circumferential direction of the first half shaft hole, the second bottom plate is located in the through hole, the oil guiding area is surrounded by the second bottom plate, the first inlet is formed on a side edge of the second bottom plate adjacent to the second baffle, the first outlet is formed on the other side edge of the second bottom plate, and a through hole for communicating the first inlet with the oil collecting area is formed in the second baffle.

8. The decelerator of claim 7, wherein the first base plate, the first baffle plate, the second baffle plate, and the second base plate are integrally formed.

9. The reducer of claim 7, further comprising a boss structure formed on a side surface of said second baffle adjacent said bearing, said boss structure abutting said bearing cup.

10. The reducer of claim 9, wherein said raised structure, said first base plate, said first baffle, said second baffle, and said second base plate are integrally formed.

11. A drive assembly comprising a decelerator as claimed in any one of claims 1 to 10.

12. A vehicle comprising the drive assembly of claim 11.