Speed reducer and automobile

Abstract

The embodiment of the utility model discloses a speed reduction device and an automobile, and the speed reduction device comprises a shell provided with a containing cavity; the input shaft system is rotatably arranged in the accommodating cavity; the intermediate shaft system is rotatably arranged in the accommodating cavity, and the intermediate shaft system is in transmission connection with the input shaft system; the output shaft system is rotatably arranged in the containing cavity, and the output shaft system is in transmission connection with the middle shaft system; the oil injection part is arranged in the containing cavity, the oil injection part is correspondingly arranged on the intermediate shaft system, a plurality of oil injection holes are formed in the oil injection part, the oil injection holes correspond to the input shaft system, the intermediate shaft system and the output shaft system respectively, and the oil injection part is used for lubricating the input shaft system, the intermediate shaft system and the output shaft system. According to the speed reducer, active oil injection lubrication and cooling of the input shaft system, the middle shaft system and the output shaft system are achieved, the oil injection amount of the speed reducer is reduced, and therefore the energy loss of the speed reducer in the transmission process is reduced, and the transmission efficiency of the speed reducer is improved.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and in particular to a speed reduction device and an automobile. Background Art

[0002] Multi-stage reducers contain internal transmission components such as gears, bearings, and differentials. Currently, these components are mostly lubricated using splash lubrication technology. However, this method may result in insufficient oil agitation at low speeds, leading to inadequate lubrication of parts and potentially causing component failure, thus affecting the reducer's transmission efficiency. Utility Model Content

[0003] Embodiments of this application provide a speed reduction device to improve the transmission efficiency of the speed reduction device.

[0004] Another objective of this application is to provide a vehicle that includes the aforementioned deceleration device.

[0005] To address the aforementioned technical problems, embodiments of this application disclose the following technical solutions:

[0006] On the one hand, a speed reduction device is provided, comprising: a housing having a receiving cavity;

[0007] The input shaft system is rotatably mounted within the receiving cavity;

[0008] An intermediate shaft system is rotatably disposed within the receiving cavity, and the intermediate shaft system is connected to the input shaft system for transmission.

[0009] The output shaft system is rotatably mounted within the receiving cavity, and is drively connected to the intermediate shaft system; and

[0010] The oil injector is located in the receiving cavity and is correspondingly located on the intermediate shaft system. The oil injector has multiple oil injection holes, each corresponding to the input shaft system, intermediate shaft system and output shaft system. The oil injector is used to lubricate the input shaft system, intermediate shaft system and output shaft system.

[0011] In addition to one or more of the features disclosed above, or as an alternative, the fuel injector includes: a main body, a first fuel injector, and a second fuel injector. The main body has an axial direction and extends along the axial direction, and an oil guide channel is provided inside the main body. The first fuel injector is connected to the main body and has a first sub-fuel injector hole, which communicates with the oil guide channel and is correspondingly provided with the engagement points of the input shaft system and the intermediate shaft system. The second fuel injector is connected to the main body and has a second sub-fuel injector hole, which communicates with the oil guide channel and is correspondingly provided with the engagement points of the output shaft system and the intermediate shaft system.

[0012] In addition to one or more of the features disclosed above, or alternatively, the input shaft system includes: an input shaft and a first-stage input gear, the input shaft extending axially and the first-stage input gear mounted on the input shaft;

[0013] The intermediate shaft system includes: an intermediate shaft, a first-stage output gear, and a second-stage input gear. The intermediate shaft extends axially. The first-stage output gear and the second-stage input gear are both mounted on the intermediate shaft, and the teeth of the first-stage output gear mesh with the teeth of the first-stage input gear. The first sub-injection port is set correspondingly to the meshing point of the first-stage output gear and the first-stage input gear.

[0014] The output shaft system includes an output shaft and a secondary output gear. The output shaft extends axially, and the secondary output gear is mounted on the output shaft. The secondary output gear meshes with the teeth of the secondary input gear. The second sub-injection port is correspondingly set at the meshing point between the secondary output gear and the secondary input gear.

[0015] In addition to one or more of the features disclosed above, or alternatively, the output shaft system may also include: a differential mounted on the output shaft, the differential being connected to the secondary output gear drive;

[0016] The fuel injection component also includes: a third fuel injection section connected to the main body, and the third fuel injection section has a third sub-fuel injection hole, which is connected to the oil guide channel and is correspondingly set to the differential.

[0017] In addition to one or more of the features disclosed above, or as an alternative, the housing includes: a first housing portion and a second housing portion connected together, the first housing portion and the second housing portion enclosing a receiving cavity;

[0018] The input shaft system also includes: a first input bearing and a second input bearing, which are respectively mounted on both sides of the input shaft in the axial direction, and the first input bearing is disposed closer to the first housing portion than the second input bearing;

[0019] The intermediate shaft system also includes: a first intermediate bearing and a second intermediate bearing, which are respectively installed on both sides of the intermediate shaft in the axial direction, and the first intermediate bearing is disposed closer to the first housing portion relative to the second intermediate bearing;

[0020] The output shaft system also includes a first output bearing and a second output bearing, which are respectively installed on both sides of the output shaft in the axial direction, and the first output bearing is positioned closer to the first housing portion than the second output bearing.

[0021] In addition to one or more of the features disclosed above, or as an alternative, the first housing portion is disposed in the first bearing chamber, the second bearing chamber and the third bearing chamber on the side near the receiving cavity;

[0022] The first input bearing is located in the first bearing chamber, the first intermediate bearing is located in the second bearing chamber, and the first output bearing is located in the third bearing chamber.

[0023] The main body is provided with a fourth sub-injection hole, a fifth sub-injection hole and a sixth sub-injection hole. The fourth sub-injection hole, the fifth sub-injection hole and the sixth sub-injection hole are all connected to the oil guide channel. The fourth sub-injection hole is connected to the first bearing chamber, the fifth sub-injection hole is connected to the second bearing chamber and the sixth sub-injection hole is connected to the third bearing chamber.

[0024] In addition to one or more of the features disclosed above, or as an alternative, the first housing portion is also provided with a first oil guide groove, the fourth sub-oil injection hole, the fifth sub-oil injection hole and the sixth sub-oil injection hole are all connected to the first oil guide groove, and the first bearing chamber, the second bearing chamber and the third bearing chamber are all connected to the first oil guide groove.

[0025] In addition to one or more of the features disclosed above, or as an alternative, the second housing portion is provided with a fourth bearing chamber, a fifth bearing chamber and a sixth bearing chamber on the side near the receiving cavity, and the fourth bearing chamber and the fifth bearing chamber are in communication.

[0026] The second input bearing is located in the fourth bearing chamber, the second intermediate bearing is located in the fifth bearing chamber, and the second output bearing is located in the sixth bearing chamber.

[0027] The main body has a seventh sub-injection hole and an eighth sub-injection hole. Both the seventh and eighth sub-injection holes are connected to the oil guide channel. The seventh sub-injection hole is connected to the fourth bearing chamber, and the eighth sub-injection hole is connected to the sixth bearing chamber.

[0028] In addition to one or more of the features disclosed above, or as an alternative, the second housing portion is provided with a second oil guide groove on the side near the receiving cavity, the seventh sub-oil injection hole and the eighth sub-oil injection hole are both connected to the second oil guide groove, and the fourth bearing chamber and the sixth bearing chamber are both connected to the second oil guide groove.

[0029] In addition to one or more of the features disclosed above, or as an alternative, the inner contour dimension of the seventh sub-injector hole is D1 mm, and the inner contour dimension of the eighth sub-injector hole is D2 mm, satisfying: 1.4≤D1 / D2≤2.

[0030] In addition to one or more of the features disclosed above, or as an alternative, it also includes: a first oil passage disposed in the first housing portion, and the first oil passage being connected to an external oil pump;

[0031] A heat exchanger is installed in the first housing portion, and the inlet end of the heat exchanger is connected to the first oil passage; and

[0032] The second oil passage is located in the first housing part, and one end of the second oil passage is connected to the output end of the heat exchanger, and the other end of the second oil passage is connected to the oil guide passage.

[0033] On the other hand, a vehicle is further disclosed that, in addition to one or more of the features disclosed above, or alternatively, the vehicle includes a deceleration device as described in any of the foregoing.

[0034] One of the above technical solutions has the following advantages or beneficial effects: This application provides an oil spraying component with oil spraying holes at corresponding positions to the input shaft system, intermediate shaft system, and output shaft system. This allows the oil spraying holes to spray oil onto the input shaft system, intermediate shaft system, and output shaft system respectively, thereby achieving active oil spraying lubrication and cooling of the input shaft system, intermediate shaft system, and output shaft system. This helps reduce the amount of oil injected into the reduction gear, ensuring that the reduction gear can use less oil to lubricate the input shaft system, intermediate shaft system, and output shaft system, thereby reducing energy loss in the transmission process and improving the transmission efficiency of the reduction gear. Attached Figure Description

[0035] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0036] Figure 1 This is a three-dimensional structural view of the deceleration device provided according to an embodiment of this application;

[0037] Figure 2 This is a three-dimensional structural view of the deceleration device provided according to an embodiment of this application from another perspective;

[0038] Figure 3 This is an exploded structural diagram of the deceleration device provided according to an embodiment of this application;

[0039] Figure 4 This is a three-dimensional structural diagram of the input shaft system, intermediate shaft system, output shaft system, and fuel injection components provided according to the embodiments of this application;

[0040] Figure 5 This is a top view of the input shaft system, intermediate shaft system, output shaft system, and fuel injector provided according to an embodiment of this application;

[0041] Figure 6 This is a three-dimensional structural view of the oil spraying component provided in the embodiments of this application;

[0042] Figure 7 This is a cross-sectional view of the oil spraying component provided according to an embodiment of this application;

[0043] Figure 8 This is a structural schematic diagram of the first housing portion and the oil spraying component provided according to an embodiment of this application;

[0044] Figure 9 This is a front view of the first housing portion provided according to an embodiment of this application;

[0045] Figure 10 This is a structural schematic diagram of the second housing and the oil spraying component provided according to an embodiment of this application;

[0046] Figure 11 This is a front view of the second housing portion provided according to an embodiment of this application.

[0047] Explanation of reference numerals in the attached figures:

[0048] 100. Speed ​​reduction device;

[0049] 110. Housing; 111. First housing section; 1111. First bearing chamber; 1112. Second bearing chamber; 1113. Third bearing chamber; 1114. First oil guide groove; 112. Second housing section; 1121. Fourth bearing chamber; 1122. Fifth bearing chamber; 1123. Sixth bearing chamber; 1124. Second oil guide groove; 113. Receiving cavity;

[0050] 120. Input shaft system; 121. Input shaft; 122. First-stage input gear; 123. First input bearing; 124. Second input bearing;

[0051] 130. Intermediate shaft system; 131. Intermediate shaft; 132. First-stage output gear; 133. Second-stage input gear; 134. First intermediate bearing; 135. Second intermediate bearing;

[0052] 140. Output shaft system; 141. Output shaft; 142. Secondary output gear; 143. Differential; 144. First output bearing; 145. Second output bearing;

[0053] 150. Injector component; 151. Injector nozzle; 1511. First sub-injector nozzle; 1512. Second sub-injector nozzle; 1513. Third sub-injector nozzle; 1514. Fourth sub-injector nozzle; 1515. Fifth sub-injector nozzle; 1516. Sixth sub-injector nozzle; 1517. Seventh sub-injector nozzle; 1518. Eighth sub-injector nozzle; 152. Main body; 1521. Oil guide channel; 153. First injection section; 154. Second injection section; 155. Third injection section; 156. Fixing part;

[0054] 160. First oil passage;

[0055] 170. Second oil passage. Detailed Implementation

[0056] To make the objectives, technical solutions, and beneficial effects of this application clearer, the following detailed description, in conjunction with the accompanying drawings and specific embodiments, further illustrates this application. It should be understood that the specific embodiments described in this specification are merely for explaining this application and are not intended to limit it.

[0057] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0059] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0060] To address the problem in existing reducers that suffer from insufficient oil agitation at low speeds, leading to inadequate lubrication of components and consequently component failure, thus reducing the reducer's transmission efficiency, the embodiments of this application refer to... Figures 1 to 11 This application provides a speed reduction device 100, including: a housing 110, an input shaft system 120, an intermediate shaft system 130, an output shaft system 140, and an oil injection component 150.

[0061] Specifically, the housing 110 is provided with a receiving cavity 113; the input shaft system 120, the intermediate shaft system 130, and the output shaft system 140 are all rotatably disposed in the receiving cavity 113, and the intermediate shaft system 130 is drivenly connected to the input shaft system 120, and the output shaft system 140 is drivenly connected to the intermediate shaft system 130, so as to realize the transmission control of power. The oil injector 150 is disposed in the receiving cavity 113 and is correspondingly disposed on the intermediate shaft system 130. The oil injector 150 has multiple oil injection holes 151, and each oil injection hole 151 is respectively disposed corresponding to the input shaft system 120, the intermediate shaft system 130 and the output shaft system 140. The oil injection holes 151 are used to spray oil to lubricate and cool the input shaft system 120, the intermediate shaft system 130 and the output shaft system 140, so as to ensure that the oil injector 150 is used to lubricate the input shaft system 120, the intermediate shaft system 130 and the output shaft system 140, and to ensure the normal operation of the reduction gear 100.

[0062] Understandably, this application provides an oil sprayer 150 with oil spray holes 151 at corresponding positions to the input shaft system 120, intermediate shaft system 130, and output shaft system 140. This allows for the spraying of oil from each spray hole 151 onto the input shaft system 120, intermediate shaft system 130, and output shaft system 140, thereby achieving active oil spraying lubrication and cooling of these systems. This helps reduce the amount of oil required for the reduction gear 100, ensuring that the reduction gear 100 can utilize a relatively large amount of oil. The reduced number of oil-lubricated input shaft system 120, intermediate shaft system 130, and output shaft system 140 reduces energy loss during transmission, improves the safety, reliability, and stability of the speed reducer 100, enhances its NVH performance, and increases its transmission efficiency. Furthermore, this application reduces the overall number of parts in the speed reducer 100, minimizes installation space, facilitates miniaturization, and ensures the speed reducer 100 is suitable for various application scenarios.

[0063] In one embodiment, reference is made to Figures 4 to 7 The oil spraying component 150 includes: a main body 152, a first oil spraying part 153 and a second oil spraying part 154.

[0064] The main body 152 has an axial direction Z and extends along the axial direction Z. An oil guide channel 1521 is provided in the main body 152 for circulating oil. A first oil spraying part 153 is connected to the main body 152 and a first sub-oil spraying hole 1511 is provided on the first oil spraying part 153. The first sub-oil spraying hole 1511 communicates with the oil guide channel 1521 and is correspondingly provided with the meshing points of the input shaft system 120 and the intermediate shaft system 130. The oil in the oil guide channel 1521 is actively sprayed to the meshing points of the input shaft system 120 and the intermediate shaft system 130 through the first sub-oil spraying hole 1511 to lubricate and cool the meshing points of the input shaft system 120 and the intermediate shaft system 130, thereby lubricating and cooling the input shaft system 120 and the intermediate shaft system 130. The second oil injection section 154 is connected to the main body section 152, and the second oil injection section 154 is provided with a second sub-oil injection hole 1512. The second sub-oil injection hole 1512 is connected to the oil guide channel 1521, and the second sub-oil injection hole 1512 is correspondingly provided with the meshing part of the output shaft system 140 and the intermediate shaft system 130. The oil in the oil guide channel 1521 is actively sprayed to the meshing part of the output shaft system 140 and the intermediate shaft system 130 through the second sub-oil injection hole 1512 to lubricate and cool the meshing part of the output shaft system 140 and the intermediate shaft system 130, thereby lubricating and cooling the output shaft system 140 and the intermediate shaft system 130.

[0065] The main body 152, the first spray nozzle 153, and the second spray nozzle 154 can be integrally formed, meaning they form a single structure. Alternatively, they can be separately configured and fixedly connected. For example, the first spray nozzle 153 and the second spray nozzle 154 can be fixedly connected to the main body 152 via welding or other processes. This application does not impose specific limitations and can be configured according to actual circumstances. For example, in this application, the main body 152, the first spray nozzle 153, and the second spray nozzle 154 are integrally die-cast.

[0066] This application, by setting up a first oil injection section 153 and a second oil injection section 154, utilizes the first oil injection section 153 to spray oil at fixed points at the meshing points of the input shaft system 120 and the intermediate shaft system 130, and utilizes the second oil injection section 154 to spray oil at fixed points at the meshing points of the output shaft system 140 and the intermediate shaft system 130, to achieve active oil injection lubrication and cooling of the input shaft system 120, the intermediate shaft system 130 and the output shaft system 140. This is beneficial to reduce the amount of oil injected into the reduction gear 100, ensuring that the reduction gear 100 can use less oil to lubricate the input shaft system 120, the intermediate shaft system 130 and the output shaft system 140, thereby reducing the energy loss of the reduction gear 100 during the transmission process, improving the safety, reliability and stability of the reduction gear 100, improving the NVH performance of the reduction gear 100, and improving the transmission efficiency of the reduction gear 100.

[0067] In one embodiment, reference is made to Figures 1 to 3 The housing 110 includes a first housing portion 111 and a second housing portion 112 connected together, the first housing portion 111 and the second housing portion 112 forming a receiving cavity 113.

[0068] The speed reduction device 100 also includes: a first oil passage 160, a heat exchanger (not shown in the figure) and a second oil passage 170.

[0069] Specifically, the first oil passage 160 is disposed in the first housing portion 111 and is connected to an external oil pump; the heat exchanger is installed in the first housing portion 111 and its input end is connected to the first oil passage 160; the second oil passage 170 is disposed in the first housing portion 111 and one end of the second oil passage 170 is connected to the output end of the heat exchanger, and the other end of the second oil passage 170 is connected to the oil guide channel 1521.

[0070] The first oil passage 160 and the second oil passage 170 can be integrally die-cast with the first housing part 111, or the first housing part 111 can be die-cast first using die-casting equipment, and then the first oil passage 160 and the second oil passage 170 can be machined from the first housing part 111 using processing equipment.

[0071] Understandably, when lubrication of the components in the reduction gear 100 is required, an external oil pump is started, and oil is delivered to the first oil passage 160. The oil in the first oil passage 160 is delivered to the heat exchanger. After the heat exchanger manages the temperature of the oil, it delivers the oil to the second oil passage 170. The oil in the second oil passage 170 is delivered to the oil guide channel 1521, so as to be sprayed through each oil injection hole 151 onto the input shaft system 120, intermediate shaft system 130 and output shaft system 140, so as to achieve active oil injection lubrication and cooling of the input shaft system 120, intermediate shaft system 130 and output shaft system 140.

[0072] This application integrates the first oil passage 160 and the second oil passage 170 onto the first housing portion 111 to effectively reduce the length of the oil passage used for conveying oil, improve the reliability of the oil circuit in the deceleration device 100 and the qualification rate of the housing, and reduce production costs.

[0073] In one embodiment, reference is made to Figures 4 to 7 The fuel injector 150 includes a fixing part 156, which is connected to the side of the main body 152 near the first housing part 111 and is fixedly connected to the first housing part 111. For example, in this application, the fixing part 156 is screwed to the first housing part 111 to realize the installation and fixing of the fuel injector 150 and ensure the stability of the overall structure of the deceleration device 100.

[0074] In one embodiment, the input shaft system 120 includes an input shaft 121 and a first-stage input gear 122, the input shaft 121 extending along the axial direction Z, and the first-stage input gear 122 mounted on the input shaft 121.

[0075] The intermediate shaft system 130 includes an intermediate shaft 131, a primary output gear 132, and a secondary input gear 133. The intermediate shaft 131 extends along the axial direction Z. Both the primary output gear 132 and the secondary input gear 133 are mounted on the intermediate shaft 131, and the primary output gear 132 meshes with the primary input gear 122. The first sub-injection port 1511 is correspondingly provided at the meshing point of the primary output gear 132 and the primary input gear 122. The oil in the oil guide channel 1521 is actively injected through the first sub-injection port 1511 to the meshing point of the primary output gear 132 and the primary input gear 122 to apply oil to the primary output gear 132. The gear 32 lubricates and cools the meshing point of the first-stage input gear 122, and in turn lubricates and cools the first-stage output gear 132 and the first-stage input gear 122. This achieves fixed-point active oil injection lubrication and cooling of the input shaft system 120 and the intermediate shaft system 130, which helps to reduce the amount of oil injected into the reduction gear 100, ensuring that the reduction gear 100 can use less oil to lubricate the input shaft system 120 and the intermediate shaft system 130. This reduces the energy loss of the reduction gear 100 during transmission, improves the safety, reliability and stability of the reduction gear 100, improves the NVH performance of the reduction gear 100, and improves the transmission efficiency of the reduction gear 100.

[0076] The output shaft system 140 includes an output shaft 141 and a secondary output gear 142. The output shaft 141 extends along the axial direction Z. The secondary output gear 142 is mounted on the output shaft 141 and meshes with the secondary input gear 133. A second sub-injection port 1512 is correspondingly provided at the meshing point of the secondary output gear 142 and the secondary input gear 133. Oil in the oil guide channel 1521 is actively injected through the second sub-injection port 1512 to the meshing point of the secondary output gear 142 and the secondary input gear 133 to engage the secondary output gear 142 and the secondary input gear 133. The meshing points are lubricated and cooled, thereby lubricating and cooling the secondary output gear 142 and the secondary input gear 133. This achieves fixed-point active oil injection lubrication and cooling of the intermediate shaft system 130 and the output shaft system 140, which helps to reduce the amount of oil injected into the reduction gear 100. This ensures that the reduction gear 100 can use less oil to lubricate the intermediate shaft system 130 and the output shaft system 140, thereby reducing the energy loss of the reduction gear 100 during transmission, improving the safety, reliability and stability of the reduction gear 100, improving the NVH performance of the reduction gear 100, and improving the transmission efficiency of the reduction gear 100.

[0077] In one embodiment, reference is made to Figures 4 to 7The output shaft system 140 also includes a differential 143, which is mounted on the output shaft 141 and is connected to the secondary output gear 142.

[0078] The fuel injector 150 also includes a third fuel injector 155, which is connected to the main body 152. The third fuel injector 155 has a third sub-fuel injector hole 1513, which is connected to the oil guide channel 1521 and is correspondingly arranged with the differential 143.

[0079] The main body 152 and the third spraying part 155 can be integrally formed, meaning they are a single structure. Alternatively, the main body 152 and the third spraying part 155 can be separately configured and fixedly connected. For example, the third spraying part 155 is fixedly connected to the main body 152 by welding or other processes. This application does not impose specific limitations and can be configured according to actual circumstances. For example, in this application, the main body 152 and the third spraying part 155 are integrally die-cast.

[0080] Understandably, when lubrication of the differential 143 in the reduction gear 100 is required, the oil in the oil guide channel 1521 is sprayed onto the differential 143 through the third sub-injection hole 1513 to lubricate and cool the differential 143. This achieves fixed-point active oil injection lubrication and cooling of the differential 143, which further helps to reduce the amount of oil injected into the reduction gear 100, ensuring that the reduction gear 100 can use less oil to lubricate the differential 143. This reduces the energy loss of the reduction gear 100 during transmission, improves the safety, reliability and stability of the reduction gear 100, improves the NVH performance of the reduction gear 100, and improves the transmission efficiency of the reduction gear 100.

[0081] In one embodiment, the input shaft system 120 further includes a first input bearing 123 and a second input bearing 124, which are respectively mounted on both sides of the input shaft 121 in the axial direction Z, and the first input bearing 123 is disposed near the first housing portion 111 relative to the second input bearing 124.

[0082] The intermediate shaft system 130 also includes a first intermediate bearing 134 and a second intermediate bearing 135, which are respectively installed on both sides of the intermediate shaft 131 in the axial direction Z, and the first intermediate bearing 134 is disposed closer to the first housing portion 111 relative to the second intermediate bearing 135.

[0083] The output shaft system 140 also includes a first output bearing 144 and a second output bearing 145, which are respectively mounted on both sides of the output shaft 141 in the axial direction Z, and the first output bearing 144 is disposed closer to the first housing portion 111 relative to the second output bearing 145.

[0084] Specifically, refer to Figures 8 to 9 The first housing portion 111 is disposed on the side near the receiving cavity 113 in the first bearing chamber 1111, the second bearing chamber 1112 and the third bearing chamber 1113, the first input bearing 123 is disposed in the first bearing chamber 1111, the first intermediate bearing 134 is disposed in the second bearing chamber 1112 and the first output bearing 144 is disposed in the third bearing chamber 1113.

[0085] The first bearing chamber 1111, the second bearing chamber 1112 and the third bearing chamber 1113 can be integrally die-cast with the first housing part 111, or the first housing part 111 can be die-cast first using die-casting equipment, and then the first bearing chamber 1111, the second bearing chamber 1112 and the third bearing chamber 1113 can be machined from the first housing part 111 using processing equipment.

[0086] Specifically, the main body 152 is provided with a fourth sub-injection hole 1514, a fifth sub-injection hole 1515 and a sixth sub-injection hole 1516. The fourth sub-injection hole 1514, the fifth sub-injection hole 1515 and the sixth sub-injection hole 1516 are all connected to the oil guide channel 1521. The fourth sub-injection hole 1514 is connected to the first bearing chamber 1111, the fifth sub-injection hole 1515 is connected to the second bearing chamber 1112 and the sixth sub-injection hole 1516 is connected to the third bearing chamber 1113.

[0087] Understandably, when lubrication is required for the first input bearing 123, the first intermediate bearing 134, and the first output bearing 144 in the reduction gear 100, the oil in the oil guide channel 1521 is sprayed through the fourth sub-oil spray hole 1514 into the first bearing chamber 1111 to provide targeted active lubrication and cooling for the first input bearing 123 located in the first bearing chamber 1111; the oil in the oil guide channel 1521 is sprayed through the fifth sub-oil spray hole 1515 into the second bearing chamber 1112 to provide lubrication and cooling for the first intermediate bearing 123 located in the second bearing chamber 1112. The bearing 134 is actively lubricated and cooled at a fixed point; the oil in the oil guide channel 1521 is sprayed into the third bearing chamber 1113 through the sixth sub-oil injection hole 1516 to actively lubricate and cool the first output bearing 144 located in the third bearing chamber 1113 at a fixed point, which further helps to reduce the amount of oil injected into the reduction device 100, thereby reducing the energy loss of the reduction device 100 during the transmission process, improving the safety, reliability and stability of the reduction device 100, improving the NVH performance of the reduction device 100, and improving the transmission efficiency of the reduction device 100.

[0088] To improve oil injection lubrication efficiency, in one embodiment, referring to... Figures 8 to 9 The first housing part 111 is also provided with a first oil guide groove 1114. The fourth sub-oil injection hole 1514, the fifth sub-oil injection hole 1515 and the sixth sub-oil injection hole 1516 are all connected to the first oil guide groove 1114, and the first bearing chamber 1111, the second bearing chamber 1112 and the third bearing chamber 1113 are all connected to the first oil guide groove 1114.

[0089] The first oil guide groove 1114 can be integrally die-cast with the first housing part 111, or the first housing part 111 can be die-cast first using die-casting equipment, and then the first oil guide groove 1114 can be machined from the first housing part 111 using processing equipment.

[0090] This application provides a first oil guide groove 1114 to guide the oil sprayed from the fourth sub-injection hole 1514, the fifth sub-injection hole 1515, and the sixth sub-injection hole 1516, ensuring efficient flow of oil to the first bearing chamber 1111, the second bearing chamber 1112, and the third bearing chamber 1113. This achieves efficient lubrication and cooling of the first input bearing 123, the first intermediate bearing 134, and the first output bearing 144, improving the lubrication efficiency of the components in the reduction gear 100. Furthermore, it helps to reduce the amount of oil injected into the reduction gear 100, thereby reducing energy loss during transmission, improving the safety, reliability, and stability of the reduction gear 100, enhancing its NVH performance, and increasing its transmission efficiency.

[0091] In another embodiment, multiple oil injection pipes may be provided on the oil injection component 150, and each oil injection pipe may be respectively provided with the first bearing chamber 1111, the second bearing chamber 1112 and the third bearing chamber 1113, so as to achieve fixed-point active oil injection lubrication and cooling for the first input bearing 123, the first intermediate bearing 134 and the first output bearing 144.

[0092] In one embodiment, reference is made to Figures 10 to 11 The second housing portion 112 is provided with a fourth bearing chamber 1121, a fifth bearing chamber 1122 and a sixth bearing chamber 1123 on the side near the receiving cavity 113. The fourth bearing chamber 1121 and the fifth bearing chamber 1122 are connected. The second input bearing 124 is provided in the fourth bearing chamber 1121, the second intermediate bearing 135 is provided in the fifth bearing chamber 1122, and the second output bearing 145 is provided in the sixth bearing chamber 1123.

[0093] The fourth bearing chamber 1121, the fifth bearing chamber 1122 and the sixth bearing chamber 1123 can be integrally die-cast with the second housing part 112, or the second housing part 112 can be die-cast first using die-casting equipment, and then the fourth bearing chamber 1121, the fifth bearing chamber 1122 and the sixth bearing chamber 1123 can be machined from the second housing part 112 using processing equipment.

[0094] Specifically, the main body 152 is provided with a seventh sub-injection hole 1517 and an eighth sub-injection hole 1518. Both the seventh sub-injection hole 1517 and the eighth sub-injection hole 1518 are connected to the oil guide channel 1521. The seventh sub-injection hole 1517 is connected to the fourth bearing chamber 1121, and the eighth sub-injection hole 1518 is connected to the sixth bearing chamber 1123.

[0095] Understandably, when lubrication is required for the second input bearing 124, the second intermediate bearing 135, and the second output bearing 145 in the reduction gear 100, the oil in the oil guide channel 1521 is sprayed through the seventh sub-oil injection hole 1517 to the fourth bearing chamber 1121 for targeted active lubrication and cooling of the second input bearing 124 located in the fourth bearing chamber 1121; simultaneously, the oil in the fourth bearing chamber 1121 flows to the fifth bearing chamber 1122 for targeted lubrication and cooling of the second intermediate bearing 135 located in the fifth bearing chamber 1122. Point-based active lubrication and cooling; the oil in the oil guide channel 1521 is sprayed through the eighth sub-oil injection hole 1518 to the sixth bearing chamber 1123 to provide point-based active lubrication and cooling for the second output bearing 145 located in the sixth bearing chamber 1123, which further helps to reduce the amount of oil injected into the reduction gear 100, thereby reducing the energy loss of the reduction gear 100 during transmission, improving the safety, reliability and stability of the reduction gear 100, improving the NVH performance of the reduction gear 100, and improving the transmission efficiency of the reduction gear 100.

[0096] In another embodiment, multiple oil injection pipes may be provided on the oil injection component 150, and each oil injection pipe may be respectively provided with the fourth bearing chamber 1121, the fifth bearing chamber 1122 and the sixth bearing chamber 1123, so as to achieve fixed-point active oil injection lubrication and cooling of the second input bearing 124, the second intermediate bearing 135 and the second output bearing 145.

[0097] In one embodiment, reference is made to Figures 10 to 11 The second housing portion 112 is also provided with a second oil guide groove 1124 on the side near the receiving cavity 113. The seventh sub-oil injection hole 1517 and the eighth sub-oil injection hole 1518 are both connected to the second oil guide groove 1124, and the fourth bearing chamber 1121 and the sixth bearing chamber 1123 are both connected to the second oil guide groove 1124.

[0098] The second oil guide groove 1124 can be integrally die-cast with the second housing part 112, or the second housing part 112 can be die-cast first using die-casting equipment, and then the second oil guide groove 1124 can be machined from the second housing part 112 using processing equipment.

[0099] This application utilizes the second oil guide groove 1124 to guide the oil sprayed from the seventh sub-oil injection hole 1517 and the eighth sub-oil injection hole 1518, ensuring that the oil flows efficiently to the fourth bearing chamber 1121, the fifth bearing chamber 1122 and the sixth bearing chamber 1123. This achieves efficient lubrication and cooling of the second input bearing 124, the second intermediate bearing 135 and the second output bearing 145, improving the lubrication efficiency of the components in the reduction gear 100. Furthermore, it helps to reduce the amount of oil injected into the reduction gear 100, thereby reducing the energy loss of the reduction gear 100 during transmission, improving the safety, reliability and stability of the reduction gear 100, improving the NVH performance of the reduction gear 100, and improving the transmission efficiency of the reduction gear 100.

[0100] In one embodiment, the inner contour dimensions of the fourth sub-injection hole 1514, the fifth sub-injection hole 1515, the sixth sub-injection hole 1516 and the eighth sub-injection hole 1518 are the same to facilitate processing and forming.

[0101] In one embodiment, the inner contour dimension of the seventh sub-injector hole 1517 is D1 mm, and the inner contour dimension of the eighth sub-injector hole 1518 is D2 mm, satisfying: 1.4 ≤ D1 / D2 ≤ 2. That is, the ratio of the inner contour dimension D1 mm of the seventh sub-injector hole 1517 to the inner contour dimension D2 mm of the eighth sub-injector hole 1518 can be controlled within the range of 1.4 to 2. For example, D1 / D2 can be one of 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, or 2, or any combination thereof. The specific values ​​of D1 / D2 given above are only illustrative examples, and any value within the range of 1.4 to 2 is within the protection scope of this application.

[0102] This application achieves a reasonable structural design for the oil spraying component 150 by keeping the ratio of the inner contour dimension D1 mm of the seventh sub-oil spray hole 1517 to the inner contour dimension D2 mm of the eighth sub-oil spray hole 1518 within the range of 1.4 to 2. This ensures that the oil sprayed from the seventh sub-oil spray hole 1517 flows efficiently to the fourth bearing chamber 1121 and the fifth bearing chamber 1122, thereby improving the lubrication efficiency of the second input bearing 124 and the second intermediate bearing 135, improving the NVH performance of the reduction gear 100, and improving the transmission efficiency of the reduction gear 100.

[0103] The inner contour dimension D1 mm of the seventh sub-injector hole 1517 can be obtained by disassembling the actual deceleration device 100 and measuring the diameter of the seventh sub-injector hole 1517 on the injector component 150 multiple times using a measuring tool and calculating the average value. The measuring tool can be any one of a ruler, vernier caliper, or other dimensional measuring instruments, but is not limited to this.

[0104] The inner contour dimension D2 mm of the eighth sub-injector hole 1518 can be obtained by disassembling the actual reduction gear 100 and measuring the diameter of the eighth sub-injector hole 1518 on the injector component 150 multiple times using a measuring tool and calculating the average value. The measuring tool can be any one of a ruler, vernier caliper, or other dimensional measuring instruments, but is not limited to these.

[0105] On the other hand, in an embodiment of this application, this application also provides a vehicle, including: a deceleration device 100 as described in any of the above embodiments.

[0106] The vehicle can be a gasoline-powered vehicle or a new energy vehicle; no specific limitation is made in this application.

[0107] The above steps are provided only to help understand the method, structure, and core ideas of this application. Those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims.

Claims

1. A speed reduction device, characterized in that, include: The housing has a receiving cavity; The input shaft system is rotatably disposed within the receiving cavity; An intermediate shaft system is rotatably disposed within the receiving cavity, and the intermediate shaft system is drivingly connected to the input shaft system; The output shaft system is rotatably disposed within the receiving cavity, and the output shaft system is drivingly connected to the intermediate shaft system; as well as An oil spraying component is disposed within the receiving cavity. The oil spraying component is correspondingly disposed on the intermediate shaft system, and the oil spraying component has multiple oil spray holes. Each oil spray hole is respectively disposed corresponding to the input shaft system, the intermediate shaft system, and the output shaft system. The oil spraying component is used to lubricate the input shaft system, the intermediate shaft system, and the output shaft system.

2. The speed reduction device as described in claim 1, characterized in that, The oil injection component includes: a main body, a first oil injection part, and a second oil injection part. The main body has an axial direction and extends along the axial direction. An oil guide channel is formed inside the main body. The first oil injection part is connected to the main body and has a first sub-injection hole. The first sub-injection hole communicates with the oil guide channel and is correspondingly arranged at the meshing points of the input shaft system and the intermediate shaft system. The second oil injection part is connected to the main body and has a second sub-injection hole. The second sub-injection hole communicates with the oil guide channel and is correspondingly arranged at the meshing points of the output shaft system and the intermediate shaft system.

3. The speed reduction device as described in claim 2, characterized in that, The input shaft system includes: an input shaft and a first-stage input gear, the input shaft extending along the axial direction, and the first-stage input gear mounted on the input shaft; The intermediate shaft system includes: an intermediate shaft, a primary output gear, and a secondary input gear. The intermediate shaft extends along the axial direction. The primary output gear and the secondary input gear are both mounted on the intermediate shaft, and the primary output gear meshes with the primary input gear. The first sub-injection hole is correspondingly provided at the meshing point of the primary output gear and the primary input gear. The output shaft system includes an output shaft and a secondary output gear. The output shaft extends along the axial direction, and the secondary output gear is mounted on the output shaft. The secondary output gear meshes with the teeth of the secondary input gear. The second sub-injection hole is correspondingly provided at the meshing point of the secondary output gear and the secondary input gear.

4. The speed reduction device as described in claim 3, characterized in that, The output shaft system further includes: a differential, mounted on the output shaft, and the differential is connected to the secondary output gear transmission; The fuel injector further includes a third fuel injector section connected to the main body, and the third fuel injector section has a third sub-fuel injector hole, the third sub-fuel injector hole is connected to the oil guide channel, and the third sub-fuel injector hole is correspondingly arranged with the differential.

5. The speed reduction device as described in claim 3, characterized in that, The housing includes: a first housing portion and a second housing portion connected together, the first housing portion and the second housing portion forming the receiving cavity; The input shaft system further includes: a first input bearing and a second input bearing, the first input bearing and the second input bearing being respectively mounted on both sides of the input shaft in the axial direction, and the first input bearing being disposed closer to the first housing portion relative to the second input bearing; The intermediate shaft system further includes: a first intermediate bearing and a second intermediate bearing, the first intermediate bearing and the second intermediate bearing being respectively installed on both sides of the intermediate shaft in the axial direction, and the first intermediate bearing being disposed closer to the first housing portion relative to the second intermediate bearing; The output shaft system further includes a first output bearing and a second output bearing, which are respectively mounted on both sides of the output shaft in the axial direction, and the first output bearing is disposed closer to the first housing portion relative to the second output bearing.

6. The speed reduction device as described in claim 5, characterized in that, The first housing portion is disposed in the first bearing chamber, the second bearing chamber, and the third bearing chamber on the side near the receiving cavity; The first input bearing is disposed in the first bearing chamber, the first intermediate bearing is disposed in the second bearing chamber, and the first output bearing is disposed in the third bearing chamber; The main body is provided with a fourth sub-injection hole, a fifth sub-injection hole and a sixth sub-injection hole. The fourth sub-injection hole, the fifth sub-injection hole and the sixth sub-injection hole are all connected to the oil guide channel. The fourth sub-injection hole is connected to the first bearing chamber, the fifth sub-injection hole is connected to the second bearing chamber and the sixth sub-injection hole is connected to the third bearing chamber.

7. The speed reduction device as described in claim 6, characterized in that, The first housing portion is also provided with a first oil guide groove. The fourth sub-oil injection hole, the fifth sub-oil injection hole and the sixth sub-oil injection hole are all connected to the first oil guide groove, and the first bearing chamber, the second bearing chamber and the third bearing chamber are all connected to the first oil guide groove.

8. The speed reduction device as described in claim 5, characterized in that, The second housing portion is provided with a fourth bearing chamber, a fifth bearing chamber and a sixth bearing chamber on the side near the receiving cavity, and the fourth bearing chamber is in communication with the fifth bearing chamber; The second input bearing is disposed in the fourth bearing chamber, the second intermediate bearing is disposed in the fifth bearing chamber, and the second output bearing is disposed in the sixth bearing chamber; The main body is provided with a seventh sub-injection hole and an eighth sub-injection hole. Both the seventh and eighth sub-injection holes are connected to the oil guide channel. The seventh sub-injection hole is connected to the fourth bearing chamber, and the eighth sub-injection hole is connected to the sixth bearing chamber.

9. The speed reduction device as described in claim 8, characterized in that, The second housing portion is also provided with a second oil guide groove on the side near the receiving cavity. The seventh sub-oil injection hole and the eighth sub-oil injection hole are both connected to the second oil guide groove, and the fourth bearing chamber and the sixth bearing chamber are both connected to the second oil guide groove.

10. The speed reduction device as described in claim 8, characterized in that, The inner contour dimension of the seventh sub-injection hole is D1 mm, and the inner contour dimension of the eighth sub-injection hole is D2 mm, satisfying: 1.4≤D1 / D2≤2.

11. The speed reduction device as described in claim 5, characterized in that, Also includes: The first oil passage is provided in the first housing portion and is connected to an external oil pump. A heat exchanger is installed in the first housing portion, and the input end of the heat exchanger is connected to the first oil passage; as well as A second oil passage is provided in the first housing portion, with one end of the second oil passage connected to the output end of the heat exchanger and the other end of the second oil passage connected to the oil guide channel.

12. A car, characterized in that, include: The deceleration device as described in any one of claims 1 to 11.

Images