Speed reducer and vehicle

Abstract

This invention provides a speed reducer and a vehicle, relating to the field of speed reducer technology. The speed reducer includes: a housing assembly; an oil baffle connected to a first bearing housing mounted on the housing assembly, the oil baffle intercepting lubricating oil splashed from a first gear assembly mounted on the first bearing housing; the oil baffle, the first bearing housing, and the housing assembly together form an oil receiving area; the first bearing housing has a first oil inlet channel communicating with the oil receiving area and a first bearing bore; and an oil receiving cover connected to the housing assembly, the oil receiving cover and the housing assembly together forming an oil receiving cavity communicating with the oil receiving area. The oil receiving cavity has an opening facing the side of the second gear assembly away from the first gear assembly, to receive lubricating oil splashed from the second gear assembly. The speed reducer of this invention can simultaneously receive lubricating oil splashed from both the first and second gear assemblies, improving the lubrication effect of the bearing in the first gear assembly.

Description

Technical Field

[0001] This invention relates to the field of speed reducer technology, and more particularly to a speed reducer and a vehicle. Background Technology

[0002] In the current new energy vehicle reducer technology, high speed and integration are the mainstream development trends. The lubrication and heat dissipation structure of high-speed bearings is very critical. Good lubrication conditions can effectively prevent dry friction and sintering due to excessive temperature in high-speed bearings.

[0003] In related technologies, a reducer housing is provided with oil baffles to collect lubricating oil splashed from one of the reducer gears and guide the collected lubricating oil to the bearing hole for mounting the reducer gear, thereby realizing the recycling of lubricating oil in the reducer to lubricate the bearing for mounting the reducer gear.

[0004] However, in related technologies, the oil baffle can only collect lubricating oil splashed from one of the reducer gears, resulting in poor lubrication of the bearing. Summary of the Invention

[0005] This invention provides a speed reducer and vehicle to solve the problem that the oil baffle can only collect lubricating oil splashed from one gear of the speed reducer, resulting in poor lubrication of the bearing.

[0006] In a first aspect, the present invention provides a speed reducer, comprising:

[0007] Housing assembly;

[0008] A first bearing housing and a first gear assembly, wherein the first bearing housing is disposed on the housing assembly and has a first bearing hole, and the first gear assembly is installed in the first bearing hole;

[0009] The second bearing housing and the second gear assembly are mounted on the housing assembly. The second bearing housing has a second bearing hole. The second gear assembly is installed in the second bearing hole and is connected to the first gear assembly.

[0010] An oil baffle is provided on the housing assembly and connected to the first bearing seat. The oil baffle is used to intercept the lubricating oil splashed from the first gear assembly. The oil baffle, the first bearing seat and the housing assembly together form an oil receiving area. The first bearing seat has a first oil inlet channel, which connects the oil receiving area and the first bearing hole.

[0011] An oil receiving cover is connected to the housing assembly. The oil receiving cover and the housing assembly together form an oil receiving cavity. The oil receiving cavity is connected to the oil receiving area. The oil receiving cavity has an opening facing the side of the second gear assembly away from the first gear assembly, so as to receive the lubricating oil splashed from the second gear assembly.

[0012] In one possible implementation, the housing assembly includes a housing body and a housing wall, with the housing wall connected to the housing body;

[0013] The oil baffle is connected to the first bearing housing, the housing body, and the housing wall.

[0014] In one possible implementation, the shell wall has a connecting portion, and the oil receiving cover is connected to the connecting portion;

[0015] Along the axial direction of the first bearing housing, the oil inlet cover abuts against the side of the oil baffle rib away from the housing body;

[0016] The oil baffle, the first bearing housing, the housing and the oil receiving cover together form the oil receiving area. The oil receiving cover has an oil outlet, which connects the oil receiving area and the oil receiving cavity.

[0017] In one possible implementation, the second gear assembly includes a two-axis gear shaft and a two-axis bearing, a first two-axis gear, and a second two-axis gear sequentially disposed on the two-axis gear shaft. The two-axis gear shaft is disposed in a second bearing hole through the two-axis bearing, and the diameter of the first two-axis gear is larger than the diameter of the second two-axis gear.

[0018] The oil receiving cover has a first oil receiving section and a second oil receiving section connected together. The first oil receiving section is located outside the first gear of the second shaft and is coaxial with the first gear of the second shaft; the second oil receiving section is located outside the second gear of the second shaft and is coaxial with the second gear of the second shaft.

[0019] In one possible implementation, the second oil receiving section is recessed relative to the first oil receiving section along the direction of the second oil receiving section toward the second gear of the second shaft.

[0020] In one possible implementation, the oil receiving cover further includes an oil guiding section located outside the first gear of the two shafts, with a second oil receiving section smoothly transitioning to the oil guiding section, and the oil guiding section extending to the oil outlet.

[0021] In one possible implementation, the reducer further includes a third bearing housing and a third gear assembly. The third bearing housing is disposed on the housing assembly and is located on the side of the second bearing housing opposite to the first bearing housing. The third gear assembly is installed in the third bearing housing and is connected to the second gear assembly.

[0022] In one possible implementation, a second oil inlet channel is provided between the first bearing housing and the second bearing housing. The second oil inlet channel connects the first bearing hole and the second bearing hole, and the end of the second oil inlet channel near the first bearing hole is higher than the end of the second oil inlet channel near the second bearing hole.

[0023] In one possible implementation, the first gear assembly includes a gear shaft and a bearing and a gear sequentially disposed on the gear shaft. The gear shaft is disposed in a first bearing hole via the bearing, and a sealing ring is provided on the bearing near the gear.

[0024] In a second aspect, the present invention provides a vehicle, including a vehicle body and a reducer, wherein the reducer is disposed on the vehicle body and the reducer is any of the reducers in the first aspect.

[0025] The present invention provides a speed reducer and a vehicle. The speed reducer incorporates an oil-blocking rib, with the rib, first bearing housing, and housing assembly forming an oil-receiving area. The rib intercepts lubricating oil splashed from the first gear assembly and guides it into the first bearing hole through a first oil inlet channel, thereby lubricating the bearing of the first gear assembly. An oil-receiving cover, formed by the cover and housing assembly, creates an oil-receiving cavity with its opening facing the side of the second gear assembly away from the first gear assembly. This cover collects lubricating oil splashed from the second gear assembly. Since the oil-receiving cavity is connected to the oil-receiving area, the lubricating oil collected in the cavity flows through the area and enters the first bearing hole through the first oil inlet channel, thus lubricating the bearing of the first gear assembly.

[0026] Therefore, the reducer provided by the present invention can not only use the oil baffle to intercept the lubricating oil on the first gear assembly for lubricating the bearing of the first gear assembly, but also use the oil receiving cover to receive the lubricating oil on the second gear assembly for lubricating the bearing of the first gear assembly, so that the lubricating oil in the reducer can be fully utilized, reducing the lubrication cost and improving the lubrication effect of the bearing of the first gear assembly. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0028] Figure 1 This is a schematic diagram of the internal structure of the reducer provided in an embodiment of the present invention;

[0029] Figure 2 for Figure 1 Front view of the intermediate speed reducer;

[0030] Figure 3 for Figure 1 Schematic diagram of the housing of the intermediate speed reducer;

[0031] Figure 4 for Figure 1 A schematic diagram of the structure of the second gear assembly;

[0032] Figure 5 for Figure 1Schematic diagram of the structure of the oil connection cover;

[0033] Figure 6 for Figure 1 A schematic diagram of the structure of the first gear assembly.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100 - Housing assembly; 110 - Housing body; 120 - Housing wall; 130 - Connecting part; 131 - Connecting protrusion; 132 - Connecting hole;

[0036] 200 - First bearing housing; 210 - First bearing bore; 220 - First oil inlet channel; 230 - Second oil inlet channel;

[0037] 300 - First gear assembly; 310 - First shaft bearing; 320 - First shaft gear; 330 - Sealing ring;

[0038] 400 - Second bearing housing; 410 - Second bearing bore;

[0039] 500 - Second gear assembly; 510 - Second shaft gear shaft; 520 - Second shaft bearing; 530 - Second shaft first gear; 540 - Second shaft second gear;

[0040] 600 - Oil baffle; 610 - Oil receiving area;

[0041] 700 - Oil receiving cover; 710 - Oil receiving chamber; 711 - Chamber opening; 720 - Oil outlet; 730 - First oil receiving section; 740 - Second oil receiving section; 750 - Oil guiding section;

[0042] 800 - Third gear assembly.

[0043] To facilitate understanding of the present invention, the spline curves and arrows used in the reference numerals in the accompanying drawings are explained below: spline curves without arrows indicate solid components, that is, components with solid structures; spline curves with arrows indicate virtual components, that is, components without solid structures.

[0044] The accompanying drawings have illustrated specific embodiments of the invention, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships (if present), are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Unless otherwise specified, embodiments of the present invention and the various features thereof may be combined with each other, all of which are within the protection scope of the present invention.

[0047] In related technologies, a reducer housing is provided with oil baffles to collect lubricating oil splashed from one of the reducer gears and guide the collected lubricating oil to the bearing hole for mounting the reducer gear, thereby realizing the recycling of lubricating oil in the reducer to lubricate the bearing for mounting the reducer gear.

[0048] However, in related technologies, the oil baffle cannot fully utilize the lubricating oil in the reducer; it can only collect the lubricating oil splashed from one of the reducer gears. Therefore, the amount of lubricating oil collected is small, resulting in poor lubrication of the bearing.

[0049] For the above technical issues, please refer to [link / reference]. Figures 1 to 3 as well as Figure 5This invention provides a speed reducer, comprising: a housing assembly 100; a first bearing seat 200 and a first gear assembly 300, the first bearing seat 200 being disposed on the housing assembly 100 and having a first bearing hole 210, the first gear assembly 300 being installed in the first bearing hole 210; a second bearing seat 400 and a second gear assembly 500, the second bearing seat 400 being disposed on the housing assembly 100 and having a second bearing hole 410, the second gear assembly 500 being installed in the second bearing hole 410 and connected to the first gear assembly 300; and an oil baffle 600, the oil baffle 600 being disposed on the housing assembly 100 and connected to the first bearing seat 200. The system includes an oil baffle 600 for intercepting lubricating oil splashed from the first gear assembly 300, an oil baffle 600, a first bearing housing 200, and a housing assembly 100 that together form an oil receiving area 610. The first bearing housing 200 has a first oil inlet channel 220 that connects the oil receiving area 610 to the first bearing hole 210. An oil receiving cover 700 is connected to the housing assembly 100 and together with the housing assembly 100 forms an oil receiving cavity 710 that communicates with the oil receiving area 610. The oil receiving cavity 710 has an opening 711 that faces the side of the second gear assembly 500 away from the first gear assembly 300 to receive lubricating oil splashed from the second gear assembly 500.

[0050] The reducer provided by the present invention has lubricating oil at the bottom. When the first gear assembly 300 and the second gear assembly 500 rotate, they will carry the lubricating oil at the bottom of the reducer. Furthermore, under the action of centrifugal force, the lubricating oil on the first gear assembly 300 and the second gear assembly 500 will splash out in the direction of rotation of each gear assembly.

[0051] The reducer provided by the present invention has an oil baffle 600 disposed on the housing assembly 100 and connected to the first bearing housing 200. The oil baffle 600, the first bearing housing 200, and the housing assembly 100 together form an oil receiving area 610, which can intercept lubricating oil splashed from the first gear assembly 300. The first bearing housing 200 has a first oil inlet channel 220, which connects the oil receiving area 610 and the first bearing hole 210. The lubricating oil intercepted in the oil receiving area 610 by the oil baffle 600 can enter the first bearing hole 210 through the first oil inlet channel 220 to lubricate the bearing of the first gear assembly 300.

[0052] By providing an oil receiving cover 700, which together with the housing assembly 100 forms an oil receiving cavity 710, with the opening 711 of the oil receiving cavity 710 facing the side of the second gear assembly 500 away from the first gear assembly 300, the oil receiving cover 700 can collect lubricating oil splashed from the second gear assembly 500. Since the oil receiving cavity 710 is connected to the oil receiving area 610, the lubricating oil collected in the oil receiving cavity 710 flows through the oil receiving area 610 and enters the first bearing hole 210 through the first oil inlet channel 220, thereby lubricating the bearing of the first gear assembly 300.

[0053] Therefore, the reducer provided by the present invention can not only use the oil baffle 600 to intercept the lubricating oil on the first gear assembly 300 for lubricating the bearing of the first gear assembly 300, but also use the oil receiving cover 700 to receive the lubricating oil on the second gear assembly 500 for lubricating the bearing of the first gear assembly 300, so that the lubricating oil in the reducer can be fully utilized, reducing the lubrication cost and improving the lubrication effect of the bearing of the first gear assembly 300.

[0054] In some embodiments, see Figure 3 The housing assembly 100 includes a housing body 110 and a housing wall 120, with the housing wall 120 connected to the housing body 110; the oil baffle 600 is connected to the first bearing seat 200, the housing body 110, and the housing wall 120.

[0055] The oil baffle 600, as part of the connecting housing 110, housing wall 120, and first bearing housing 200, provides additional structural reinforcement. This helps enhance the overall structural stability of the reducer, reduces vibration and deformation caused by working loads, and thus extends the service life of the reducer. Exemplarily, the oil baffle 600, housing 110, and housing wall 120 are integrally formed.

[0056] In this invention, the oil baffle 600 serves as a reinforcing rib and needs to be connected to the shell wall 120, the shell body 110, and the first bearing seat 200 simultaneously to enhance the overall structural stability of the reducer.

[0057] To improve lubrication, a dual-side oil receiving scheme is adopted. This typically involves sequentially mounting an oil baffle 600 and an oil receiving cover 700 on the housing 110. Furthermore, to guide the lubricating oil from the oil receiving cover 700 into the first bearing hole 210, a hole needs to be made in the oil baffle 600 to connect the oil receiving area 610 to the oil receiving cavity 710. However, making a hole in the oil baffle 600 compromises its structural reinforcing properties, leading to a design conflict between the structure used to reinforce the oil baffle 600 and the structure used to achieve dual-side oil receiving in the reducer.

[0058] To address the aforementioned technical issues, please refer to the following embodiments in some cases: Figure 2 , Figure 3and Figure 5 The reducer provided by the present invention has a connecting part 130 on the housing wall 120, and an oil receiving cover 700 is connected to the connecting part 130. Along the axial direction of the first bearing seat 200, the oil receiving cover 700 abuts against the side of the oil baffle 600 away from the housing body 110. The oil baffle 600, the first bearing seat 200, the housing body 110 and the oil receiving cover 700 together form an oil receiving area 610. The oil receiving cover 700 has an oil outlet 720, which connects the oil receiving area 610 and the oil receiving cavity 710.

[0059] In this embodiment, the oil receiving cover 700 abuts against the side of the oil-blocking rib 600 opposite to the housing 110. This achieves oil collection from both sides while avoiding damage to the original structure of the oil-blocking rib 600, thus maintaining its reinforcing function. Furthermore, the oil receiving cover 700 abuts against the side of the oil-blocking rib 600 opposite to the housing 110. The oil-blocking rib 600, the first bearing seat 200, the housing 110, and the oil receiving cover 700 together form the oil receiving area 610. The oil-blocking rib 600 and the oil receiving cover 700 complement each other, forming a large space in the oil receiving area 610, capable of holding a significant amount of lubricating oil. The oil outlet 720 on the oil receiving cover 700 directly connects the oil receiving area 610 and the oil receiving cavity 710, allowing the lubricating oil in the oil receiving cavity 710 to easily enter the first bearing hole 210. In addition, a connecting part 130 is provided on the shell wall 120, which enables the oil receiving cover 700 to abut against the side of the oil baffle 600 away from the shell body 110.

[0060] Further, please see Figure 3 The connecting portion 130 includes at least two connecting protrusions 131, each having a connecting hole 132. The oil receiving cover 700 also includes a connector (not shown), which is inserted into the connecting hole 132 to connect the oil receiving cover 700 and the shell wall 120. The present invention does not limit the specific structure of the connector and the connecting hole 132, and can adjust them according to requirements. For example, the connector can be a rivet, a bolt and nut assembly, or a screw; correspondingly, the connecting hole 132 can be a riveting hole, a through hole, or a screw hole.

[0061] For some specific implementation methods, please refer to Figure 4 The second gear assembly 500 includes a two-axis gear shaft 510 and a two-axis bearing 520, a two-axis first gear 530 and a two-axis second gear 540 sequentially disposed on the two-axis gear shaft 510. The two-axis gear shaft 510 is disposed in a second bearing hole 410 through the two-axis bearing 520. The diameter of the two-axis first gear 530 is larger than the diameter of the two-axis second gear 540.

[0062] Please see Figure 1 and Figure 5The oil receiving cover 700 has a first oil receiving section 730 and a second oil receiving section 740 that are connected. The first oil receiving section 730 is located outside the first gear 530 of the second shaft and is coaxial with the first gear 530 of the second shaft. The second oil receiving section 740 is located outside the second gear 540 of the second shaft and is coaxial with the second gear 540 of the second shaft.

[0063] In this embodiment, the oil receiving cover 700 is disposed above the second gear assembly 500. Since the outer contours of the first gear 530 and the second gear 540 are circular, the first oil receiving section 730 is coaxially arranged with the first gear 530, and the second oil receiving section 740 is coaxially arranged with the second gear 540, resulting in arc-shaped sections 730 and 740. Under centrifugal force, the lubricating oil detaches from the gears and splashes within the reducer in a parabolic trajectory. The arc-shaped first and second oil receiving sections 730 and 740 effectively collect the splashed lubricating oil.

[0064] For other specific implementations, please refer to Figure 1 The second oil receiving section 740 is recessed relative to the first oil receiving section 730 along the direction of the second oil receiving section 740 toward the second gear 540 of the second shaft.

[0065] Because the diameter of the first gear 530 of the second shaft is larger than the diameter of the second gear 540 of the second shaft, if the second oil receiving section 740 were flush with the first oil receiving section 730, there would be a large gap between the second gear 540 and the second oil receiving section 740, resulting in low space utilization within the reducer. In this embodiment, the second oil receiving section 740 is recessed, extending close to the second gear 540 of the second shaft. This reduces the gap between the second gear 540 and the second oil receiving section 740, fully utilizing the internal space of the reducer. Furthermore, the recessed design of the second oil receiving section 740 increases its internal volume, allowing it to hold more lubricating oil and thus improving the lubrication effect of the bearing within the first bearing hole 210.

[0066] For some specific implementation methods, please refer to Figure 5 The oil receiving cover 700 also includes an oil guiding section 750, which is located outside the first gear 530 of the second shaft. The second oil receiving section 740 and the oil guiding section 750 are smoothly connected. The oil guiding section 750 extends to the oil outlet 720.

[0067] Because the second oil receiving section 740 is located on the side of the first oil receiving section 730 away from the oil baffle 600, it is inconvenient to guide the lubricating oil in the second oil receiving section 740 to the oil receiving area 610. Therefore, in this embodiment, an oil guiding section 750 is provided, and the oil guiding section 750 is located outside the first gear 530 of the two shafts, so one side of the oil guiding section 750 will be close to the oil receiving area 610; the second oil receiving section 740 and the oil guiding section 750 are set to a smooth transition, so that the lubricating oil in the second oil receiving section 740 can flow smoothly into the oil guiding section 750 and be close to the oil receiving area 610; and the oil guiding section 750 extends to the oil outlet 720, so that the lubricating oil in the second oil receiving section 740 can flow into the oil receiving area 610 through the oil guiding section 750 for bearing lubrication.

[0068] Furthermore, because the first oil receiving section 730 is positioned higher than the second oil receiving section 740, the second oil receiving section 740 and the oil guiding section 750 are designed for a smooth transition. This allows the lubricating oil received by the first oil receiving section 730 to flow smoothly into the first oil receiving section 730 and / or the oil guiding section 750, and then into the oil receiving area 610 through the oil outlet 720 for bearing lubrication. Thus, the lubricating oil in both the first and second oil receiving sections 730 can enter the oil receiving area 610, resulting in better lubrication of the bearings in the first gear assembly 300.

[0069] It should be noted that the oil receiving cover 700 is injection molded to form the first oil receiving section 730, the second oil receiving section 740 and the oil guiding section 750 mentioned above. Compared with the steel plate welding forming, the dimensional accuracy of the injection molded oil receiving cover 700 is easier to guarantee.

[0070] In some embodiments, see Figure 1 and Figure 2 The reducer also includes a third bearing housing (not shown) and a third gear assembly 800. The third bearing housing is disposed on the housing assembly 100 and is located on the side of the second bearing housing 400 opposite to the first bearing housing 200. The third gear assembly 800 is installed in the third bearing housing and is connected to the second gear assembly 500.

[0071] In this embodiment, since the first gear assembly 300 is installed in the first bearing hole 210, and the second gear assembly 500 is installed in the second bearing hole 410, the first gear assembly 300 and the second gear assembly 500 are connected. Furthermore, the third bearing housing is located on the side of the second bearing housing 400 opposite to the first bearing housing 200, and the third gear assembly 800 is installed in the third bearing housing and connected to the second gear assembly 500. Therefore, the third gear assembly 800 is located on the side of the second gear assembly 500 opposite to the first gear assembly 300. Also, since the opening 711 of the oil receiving cover 700 faces the side of the second gear assembly 500 opposite to the first gear assembly 300, the opening 711 of the oil receiving cover 700 faces the oil pumping area between the second gear assembly 500 and the third gear assembly 800. Therefore, the oil catcher 700 can not only catch the lubricating oil splashed from the second gear assembly 500, but also catch the lubricating oil splashed from the third gear assembly 800, so that the lubricating oil in the reducer can be fully utilized, reducing lubrication costs and improving the lubrication effect of the bearings of the first gear assembly 300.

[0072] Furthermore, since the third gear assembly 800 is immersed in the most lubricating oil, it can maximize the splashing of lubricating oil. The cavity 711 of the oil receiving cover 700 faces the oil pumping area between the second gear assembly 500 and the third gear assembly 800. The oil receiving cover 700 can hold more lubricating oil, which can make full use of the lubricating oil in the reducer, reduce lubrication costs, and improve the lubrication effect of the bearings of the first gear assembly 300.

[0073] In other embodiments, please refer to Figure 2 and Figure 3 A second oil inlet channel 230 is provided between the first bearing housing 200 and the second bearing housing 400. The second oil inlet channel 230 connects the first bearing hole 210 and the second bearing hole 410. The end of the second oil inlet channel 230 near the first bearing hole 210 is higher than the end of the second oil inlet channel 230 near the second bearing hole 410.

[0074] In this embodiment, the lubricating oil received by the oil baffle 600 and the oil receiving cover 700 flows into the first bearing hole 210 through the first oil inlet channel 220. When the level of the lubricating oil in the first bearing hole 210 is higher than the level of the second oil inlet channel 230 in the first bearing hole 210, the lubricating oil in the first bearing hole 210 can flow into the second bearing hole 410 through the second oil inlet channel 230 to lubricate the bearing of the second gear assembly 500 in the second bearing hole 410.

[0075] Furthermore, the end of the second oil inlet channel 230 near the first bearing hole 210 is higher than the end of the second oil inlet channel 230 near the second bearing hole 410. The second oil inlet channel 230 can be considered to be inclined, with an inclination angle of 5° to 15°. For example, the inclination angle is 5°, 10° or 15°.

[0076] In some other embodiments, please refer to Figure 6 The first gear assembly 300 includes a shaft gear 320 and a shaft bearing 310 and a shaft gear 320 sequentially disposed on the shaft gear 320. The shaft gear 320 is disposed in a first bearing hole 210 through the shaft bearing 310. A sealing ring 330 is disposed on the side of the shaft bearing 310 near the shaft gear 320.

[0077] In this embodiment, the two sides of the primary bearing 310 are connected. For example, the primary bearing 310 is a ball bearing, and there is a gap between the balls of the ball bearing. Lubricating oil in the first bearing hole 210 may flow out through this gap. To address the above-mentioned technical problem, in this embodiment, by providing a sealing ring 330 on the side of the primary bearing 310 near the primary gear 320, the lubricating oil in the first bearing hole 210 can be effectively prevented from flowing out through the primary bearing 310, thereby ensuring that there is sufficient lubricating oil in the first bearing hole 210 to flow into the second bearing hole 410 to lubricate the bearing of the second gear assembly 500.

[0078] This invention also provides a vehicle, including a vehicle body and a reducer, wherein the reducer is disposed on the vehicle body and the reducer is any of the aforementioned reducers.

[0079] Specifically, the vehicle in this embodiment adopts all the technical solutions of any of the aforementioned reducers, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0080] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0081] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A speed reducer, characterized in that, include: Housing assembly; A first bearing housing and a first gear assembly, wherein the first bearing housing is disposed on the housing assembly and has a first bearing hole, and the first gear assembly is installed in the first bearing hole; A second bearing housing and a second gear assembly are provided on the housing assembly. The second bearing housing has a second bearing hole. The second gear assembly is installed in the second bearing hole and is connected to the first gear assembly. An oil baffle is provided on the housing assembly and connected to the first bearing seat. The oil baffle is used to intercept lubricating oil splashed from the first gear assembly. The oil baffle, the first bearing seat and the housing assembly together form an oil receiving area. The first bearing seat has a first oil inlet channel, which connects the oil receiving area and the first bearing hole. An oil receiving cover is connected to the housing assembly. The oil receiving cover and the housing assembly together form an oil receiving cavity. The oil receiving cavity communicates with the oil receiving area. The oil receiving cavity has an opening facing the side of the second gear assembly away from the first gear assembly, so as to receive the lubricating oil splashed from the second gear assembly.

2. The reducer according to claim 1, characterized in that, The housing assembly includes a housing body and a housing wall, the housing wall being connected to the housing body; The oil baffle is connected to the first bearing seat, the housing body, and the housing wall.

3. The reducer according to claim 2, characterized in that, The shell wall has a connecting part, and the oil receiving cover is connected to the connecting part; Along the axial direction of the first bearing housing, the oil receiving cover abuts against the side of the oil baffle rib opposite to the housing body; The oil baffle, the first bearing seat, the housing, and the oil receiving cover together form the oil receiving area. The oil receiving cover has an oil outlet, which connects the oil receiving area and the oil receiving cavity.

4. The reducer according to claim 3, characterized in that, The second gear assembly includes a two-axis gear shaft and a two-axis bearing, a first two-axis gear, and a second two-axis gear sequentially disposed on the two-axis gear shaft. The two-axis gear shaft is disposed in the second bearing hole through the two-axis bearing, and the diameter of the first two-axis gear is larger than the diameter of the second two-axis gear. The oil receiving cover has a first oil receiving section and a second oil receiving section that are connected. The first oil receiving section is located outside the first gear of the two shafts and is coaxial with the first gear of the two shafts. The second oil receiving section is located outside the second gear of the two shafts and is coaxial with the second gear of the two shafts.

5. The reducer according to claim 4, characterized in that, The second oil receiving section is recessed relative to the first oil receiving section along the direction of the second oil receiving section toward the second gear of the two shafts.

6. The reducer according to claim 4, characterized in that, The oil receiving cover also includes an oil guiding section, which is located outside the first gear of the two shafts. The second oil receiving section and the oil guiding section are smoothly connected, and the oil guiding section extends to the oil outlet.

7. The reducer according to any one of claims 1-6, characterized in that, It also includes a third bearing housing and a third gear assembly. The third bearing housing is disposed on the housing assembly and is located on the side of the second bearing housing opposite to the first bearing housing. The third gear assembly is installed in the third bearing housing and is connected to the second gear assembly.

8. The reducer according to claim 7, characterized in that, A second oil inlet channel is provided between the first bearing housing and the second bearing housing. The second oil inlet channel connects the first bearing hole and the second bearing hole. The end of the second oil inlet channel near the first bearing hole is higher than the end of the second oil inlet channel near the second bearing hole.

9. The reducer according to claim 8, characterized in that, The first gear assembly includes a gear shaft and a bearing and a gear arranged sequentially on the gear shaft. The gear shaft is disposed in the first bearing hole through the bearing, and a sealing ring is provided on the bearing near the gear.

10. A vehicle, characterized in that, It includes a vehicle body and a reducer, wherein the reducer is disposed on the vehicle body, and the reducer is the reducer according to any one of claims 1-9.

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