Speed reducer, transmission mechanism with speed reducer and vehicle

Abstract

The utility model discloses a speed reducer, a transmission mechanism with the speed reducer and a vehicle, and the speed reducer comprises a shell which defines a containing cavity; the first half shaft is arranged in the accommodating cavity and comprises a first end part and a second end part; a first oil storage cavity, a second oil storage cavity and an oil guide groove are formed in the inner wall of the containing cavity, the first oil storage cavity is adjacent to the first end of the first half shaft, the second oil storage cavity is adjacent to the second end of the first half shaft, and the oil guide groove communicates with the first oil storage cavity and the second oil storage cavity. According to the speed reducer, due to the fact that the oil guide groove, the first oil storage cavity adjacent to the first end portion and the second oil storage cavity adjacent to the second end portion are arranged, oil can be guided to the two ends of the first half shaft so as to lubricate parts located at the two ends of the first half shaft, lubricating dead angles can be reduced conveniently, and the lubricating effect on the parts in the speed reducer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, and in particular to a reducer and a transmission mechanism and a vehicle with the reducer. Background Art

[0002] The housing of the reducer in the related art defines a chamber, and the rotating shaft is rotatably disposed in the chamber to drive the wheels to rotate. Since the length of the rotating shaft is long, the length of the chamber is also long. When an electronic pump is used to supply oil, only the lubrication of the components near one end of the rotating shaft can be guaranteed, and the lubrication effect on the components at the other end of the rotating shaft is poor. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a reducer, which can guide oil to both ends of a first semi-shaft by providing an oil guide groove, a first oil storage chamber adjacent to a first end, and a second oil storage chamber adjacent to a second end, so as to lubricate the components located at both ends of the first semi-shaft, thereby reducing the lubrication dead angle and improving the lubrication effect on the components in the reducer.

[0004] The utility model also provides a transmission mechanism with the reducer.

[0005] The utility model also provides a vehicle with the transmission mechanism.

[0006] The reducer according to the first aspect of the embodiment of the utility model includes: a shell, which defines a accommodating cavity; a first half-shaft, which is arranged in the accommodating cavity and includes a first end and a second end; the inner wall of the accommodating cavity is provided with a first oil storage cavity, a second oil storage cavity and an oil guide groove, the first oil storage cavity is arranged adjacent to the first end of the first half-shaft, the second oil storage cavity is arranged adjacent to the second end of the first half-shaft, and the oil guide groove connects the first oil storage cavity and the second oil storage cavity.

[0007] The reducer according to the embodiment of the utility model is capable of guiding the oil to both ends of the first half-shaft to lubricate the components located at both ends of the first half-shaft by providing an oil guide groove, a first oil storage chamber adjacent to the first end, and a second oil storage chamber adjacent to the second end, thereby reducing lubrication dead angles and improving the lubrication effect on the components in the reducer.

[0008] In addition, the reducer according to the above embodiment of the utility model may also have the following additional technical features:

[0009] According to some embodiments of the present utility model, the reducer also includes a first bearing and a second bearing, the first bearing is disposed outside the first half-shaft and is located on the side of the first oil storage chamber facing the first end, and the second bearing is disposed outside the first half-shaft and is located on the side of the second oil storage chamber facing the second end.

[0010] According to some optional embodiments of the utility model, the oil guide groove is located at the bottom of the accommodating cavity, part of the inner wall of the accommodating cavity is recessed outward to form the second oil storage cavity, and the bottom end of the inner surface of the first bearing outer ring and the bottom end of the inner surface of the second bearing outer ring are lower than the bottom surface of the oil guide groove.

[0011] According to some optional embodiments of the utility model, the reducer also includes: a differential gear, which cooperates with the second end to drive the first half-shaft to rotate; a differential housing, in which the differential gear is arranged, and a part of the differential housing is clamped between the second bearing and the first half-shaft.

[0012] According to some embodiments of the present utility model, the side wall of the accommodating cavity defines an oil drain groove, the oil inlet of the oil drain groove is connected to the top of the second oil storage cavity and the oil inlet of the oil drain groove is higher than the top of the oil guide groove.

[0013] According to some optional embodiments of the present utility model, the shell defines an oil storage chamber, and in the extension direction of the first semi-axis, the oil storage chamber is arranged on one side of the accommodating chamber; the oil drain groove is connected to the oil storage chamber.

[0014] According to some specific embodiments of the utility model, the reducer also includes a driving gear, which is connected to the first half-shaft to transmit driving force to the first half-shaft; the driving gear is rotatably disposed in the housing and at least a portion of the driving gear is disposed in the oil storage chamber to disturb the oil, and the inner wall of the oil storage chamber is provided with an oil supply channel connected to the accommodating chamber, and the oil outlet of the oil supply channel is higher than the oil inlet of the oil drain groove.

[0015] In some embodiments, the reducer further includes an oil delivery channel connected to the oil supply pump, an oil outlet of the oil delivery channel is in communication with the accommodating cavity, and an oil outlet of the oil delivery channel is higher than an oil outlet of the oil supply channel.

[0016] In some examples, the oil guide groove is located at the bottom of the accommodating cavity, and the oil guide groove, the oil delivery channel, the oil drain groove and the oil supply channel are arranged at intervals along the circumference of the accommodating cavity.

[0017] According to some specific embodiments of the present utility model, the reducer further includes a differential housing, and the driving gear is fixed to the differential housing.

[0018] According to some embodiments of the present utility model, the shell includes a box body and a sleeve, the box body and the sleeve are an integrated piece, the accommodating cavity is defined in the sleeve, and the second end extends into the box body.

[0019] According to a second aspect of the present invention, a transmission mechanism is provided. The transmission mechanism includes the reducer according to the embodiment of the first aspect of the present invention.

[0020] According to the transmission mechanism of the embodiment of the utility model, by utilizing the reducer described in the embodiment of the first aspect of the utility model, by providing an oil guide groove, a first oil storage chamber adjacent to the first end, and a second oil storage chamber adjacent to the second end, the oil can be guided to the two ends of the first half-shaft to lubricate the components located at the two ends of the first half-shaft, thereby reducing lubrication dead angles and improving the lubrication effect on the components in the reducer.

[0021] According to an embodiment of a third aspect of the utility model, a vehicle is provided, wherein the vehicle comprises the transmission mechanism according to the embodiment of the second aspect of the utility model.

[0022] According to the vehicle of the embodiment of the utility model, by utilizing the transmission mechanism described in the embodiment of the second aspect of the utility model, by providing an oil guide groove, a first oil storage chamber adjacent to the first end, and a second oil storage chamber adjacent to the second end, the oil can be guided to the two ends of the first half-shaft to lubricate the components located at the two ends of the first half-shaft, thereby reducing lubrication dead angles and improving the lubrication effect on the components in the reducer.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 It is a partial structural schematic diagram of a reducer according to an embodiment of the utility model;

[0026] Figure 2 It is a partial structural schematic diagram of a reducer according to an embodiment of the utility model;

[0027] Figure 3 It is a cross-sectional view of a partial structure of a reducer according to an embodiment of the utility model.

[0028] Reference numerals: housing 10, box body 101, sleeve 102, accommodating chamber 11, first oil storage chamber 111, second oil storage chamber 112, oil guide groove 113, oil drain groove 114, oil storage chamber 12, oil supply channel 121, oil delivery channel 13,

[0029] The first half shaft 21, the differential gear 22, the differential housing 23,

[0030] The first bearing 31 , the second bearing 32 , the second half shaft 41 , the driving gear 42 , and the oil seal 51 . DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] The reducer according to the embodiment of the utility model is described below with reference to the accompanying drawings.

[0033] like Figure 1-Figure 3 As shown, the reducer according to the embodiment of the present utility model includes a housing 10 and a first half shaft 21 .

[0034] The housing 10 defines a receiving cavity 11, and the first half shaft 21 is disposed in the receiving cavity 11. The first half shaft 21 includes a first end and a second end. For example, the first end of the first half shaft 21 is suitable for cooperating with a wheel. When the first half shaft 21 rotates, the first half shaft 21 drives the wheel to rotate to drive the vehicle to travel. The first end can cooperate with the wheel through a linkage or directly, and no excessive restrictions are made here.

[0035] The inner wall of the accommodating chamber 11 is provided with a first oil storage chamber 111, a second oil storage chamber 112 and an oil guide groove 113. The first oil storage chamber 111 is arranged adjacent to the first end of the first half shaft 21, and the second oil storage chamber 112 is arranged adjacent to the second end of the first half shaft 21. The oil guide groove 113 connects the first oil storage chamber 111 and the second oil storage chamber 112.

[0036] Among them, since the first half shaft 21 has a certain length, the distance between the first end and the second end is relatively far. By setting the oil guide groove 113, the oil guide groove 113 is connected with the first oil storage chamber 111 and the second oil storage chamber 112, so that the oil can easily flow through the oil guide groove 113 in the first oil storage chamber 111 and the second oil storage chamber 112. The oil in the first oil storage chamber 111 can be used to lubricate the parts at the first end, and the oil in the second oil storage chamber 112 can be used to lubricate the parts close to the second end. In this way, even if the distance between multiple parts that need to be lubricated in the accommodating chamber 11 is relatively far, lubrication of multiple parts can be achieved, which is convenient for improving the lubrication effect of the parts in the accommodating chamber 11 and reducing lubrication dead angles.

[0037] When the first half shaft 21 rotates, the first half shaft 21 can cause the oil near the first end and the second end to splash, and the splashed oil can reach the components near the first end and the components near the second end to lubricate the first end and the components matching with the first end, and lubricate the second end and the components matching with the second end, thereby facilitating the reduction of friction between the components in the reducer and reducing the wear between the remaining components.

[0038] In summary, according to the reducer of the embodiment of the utility model, by providing an oil guide groove 113, a first oil storage chamber 111 adjacent to the first end and an adjacent second end, the oil can be guided to the two ends of the first half shaft 21 to lubricate the components located at the two ends of the first half shaft 21, thereby reducing the lubrication dead angle and improving the lubrication effect on the components in the reducer.

[0039] The reducer according to a specific embodiment of the utility model is described below with reference to the accompanying drawings.

[0040] In some specific embodiments of the present invention, Figure 1-Figure 3 As shown, the reducer includes a housing 10 and a first half shaft 21 .

[0041] In some embodiments of the present invention, Figure 3 As shown, the reducer also includes a first bearing 31 and a second bearing 32. The first bearing 31 is sleeved on the first half-shaft 21. The first bearing 31 is located on the side of the first oil storage chamber 111 facing the first end. The first bearing 31 is used to support the first end of the first half-shaft 21. The oil in the first oil storage chamber 111 can lubricate the first bearing 31, which is convenient for reducing the noise generated by the first half-shaft 21 during rotation, and is convenient for reducing the wear of the first bearing 31 during use, thereby facilitating increasing the service life of the first bearing 31.

[0042] The second bearing 32 is outermostly disposed on the first half shaft 21, and is located on the side of the second oil storage chamber 112 facing the second end. The oil stored in the second oil storage chamber 112 can lubricate the second bearing 32, thereby facilitating reduction of the noise generated by the reducer during transmission, and reducing the wear of the second bearing 32 during use, thereby facilitating improvement of the service life of the second bearing 32.

[0043] Among them, by supporting the two ends of the first half shaft 21, it is convenient to ensure the smooth rotation of the first half shaft 21 and avoid excessive shaking of the first half shaft 21 during rotation. In addition, the oil in the first oil storage chamber 111 is used to lubricate the first bearing 31, and the oil in the second oil storage chamber 112 is used to lubricate the second bearing 32. In this way, even if the first bearing 31 and the second bearing 32 are arranged at the two ends of the first half shaft 21 and the distance between the first bearing 31 and the second bearing 32 is far, lubrication of the first bearing 31 and the second bearing 32 can be achieved.

[0044] In some embodiments, the axial direction of the first half-shaft 21 extends in the left-right direction (it should be understood here that the above direction limitation is only for the convenience of describing the drawings and will not limit the actual setting position and direction of the reducer), the first end is the right end of the first half-shaft 21, the second end is the left end of the first half-shaft 21, and the oil guide groove 113 extends in the left-right direction.

[0045] The first bearing 31 is located on the right side of the first oil storage chamber 111 to prevent the first bearing 31 from hindering the oil in the oil guide groove 113 from flowing rightward toward the first oil storage chamber 111, thereby facilitating the storage of oil in the first oil storage chamber 111 and utilizing the oil in the first oil storage chamber 111 to lubricate the first bearing 31 and other components located at the right end of the first half shaft 21.

[0046] The second bearing 32 is located on the left side of the second oil storage chamber 112, so that the second bearing 32 can avoid hindering the oil in the oil guide groove 113 from flowing leftward toward the second oil storage chamber 112, thereby facilitating the storage of oil in the second oil storage chamber 112, and utilizing the oil in the second oil storage chamber 112 to lubricate the second bearing 32 and other components located at the left end of the first half shaft 21.

[0047] In some embodiments, the right side of the accommodating chamber 11 has an open mouth, and the reducer also includes an oil seal 51, which is used to close the open mouth to prevent the oil in the accommodating chamber 11 from leaking out of the reducer. The end of the oil seal 51 extending into the accommodating chamber 11 is arranged close to the first oil storage chamber 111. Specifically, when the first half-shaft 21 is rotating, the first half-shaft 21 can drive the oil in the first oil storage chamber 111 to splash, and the splashed oil can lubricate the oil seal 51 and the first half-shaft 21, so as to facilitate the formation of a lubricating oil film between the first half-shaft 21 and the oil seal 51, thereby reducing the wear of the first half-shaft 21 and the oil seal 51.

[0048] In some optional embodiments of the present invention, the oil guide groove 113 is located at the bottom of the accommodating cavity 11, the bottom end of the inner surface of the outer ring of the first bearing 31 is lower than the bottom surface of the oil guide groove 113, and the bottom end of the inner surface of the outer ring of the second bearing 32 is lower than the bottom surface of the oil guide groove 113. This design allows the oil in the oil guide groove 113 and the first oil storage cavity 111 to flow between the outer ring and the inner ring of the first bearing 31, and the oil in the oil guide groove 113 and the second oil storage cavity 112 to flow between the outer ring and the inner ring of the second bearing 32, thereby achieving lubrication of the first bearing 31 and the second bearing 32, and avoiding the situation where too much oil is concentrated in the oil guide groove 113 and the first bearing 31 and the second bearing 32 cannot be lubricated.

[0049] Specifically, the bearing includes an inner ring, an outer ring and rolling elements. The rolling elements are arranged between the inner ring and the outer ring, and play the role of rolling and transmitting force. The oil entering the inner ring and the outer ring of the bearing is used to lubricate the rolling elements to reduce the friction between the inner ring of the bearing and the rolling elements, and reduce the friction between the outer ring of the bearing and the rolling elements, so as to increase the service life of the bearing.

[0050] In some embodiments, the oil supplied by the reducer to the accommodating chamber 11 will preferentially flow into the second oil storage chamber 112, so that the bottom end of the inner surface of the outer ring of the second bearing 32 is lower than the bottom surface of the oil guide groove 113, so that the oil in the second oil storage chamber 112 will preferentially reach between the inner ring and the outer ring of the second bearing 32, thereby achieving lubrication of the second bearing 32. When the liquid level in the second oil storage chamber 112 continues to rise to a certain height, the oil in the second oil storage chamber 112 will enter the oil guide groove 113 and flow along the oil guide groove 113 to the first oil storage chamber 111.

[0051] Among them, after the oil in the oil guide groove 113 enters the first oil storage chamber 111, the oil in the first oil storage chamber 111 can enter between the inner ring and the outer ring of the first bearing 31 to lubricate the first bearing, so that the bottom end of the inner surface of the outer ring of the first bearing 31 is lower than the bottom surface of the oil guide groove 113, so that the first bearing 31 can be lubricated even when the oil is less, avoiding excessive oil being stored in the oil guide groove 113 and failing to lubricate the first bearing 31.

[0052] In some optional embodiments of the present invention, Figure 3 As shown, the reducer also includes a differential gear 22 and a differential housing 23. The differential gear 22 is disposed in the differential housing 23. The differential gear 22 cooperates with the second end portion to drive the first half shaft 21 to rotate, and then drives the wheels to rotate through the first half shaft 21.

[0053] A portion of the differential housing 23 is clamped between the second bearing 32 and the first half shaft 21. The second bearing 32 is used to support the rotation of the differential housing 23. By supporting the position of the differential housing 23, the differential housing 23 and the differential gear 22 can rotate stably, and the differential gear 22 can smoothly cooperate with the second end of the first half shaft 21, so that the differential gear 22 can smoothly drive the first half shaft 21 to rotate.

[0054] When the first half shaft 21 rotates, the first half shaft 21 can drive the oil near the second end to splash, and the splashed oil can reach the differential gear 22 and the differential housing 23 to lubricate the differential gear 22 and the differential housing 23, thereby reducing the wear of the differential gear 22 and the differential housing 23, and further increasing the service life of the differential gear 22 and the differential housing 23.

[0055] In some embodiments, Figure 3 As shown, the reducer includes a plurality of differential gears 22 and a differential housing 23. The plurality of differential gears 22 are rotatably disposed on the differential housing 23. The rotation axis of the differential gears 22 is perpendicular to the rotation axis of the differential housing 23. For the convenience of description, the rotation axis of the differential housing 23 is referred to as the first axis, and the rotation axis of the differential gears 22 is referred to as the second axis. When the differential housing 23 rotates, it can drive the plurality of differential gears 22 to revolve around the first axis, and the plurality of differential gears 22 can also rotate around their own second axis.

[0056] The reducer also includes a second half-shaft 41, which is fixed to the differential housing 23. When the second half-shaft 41 rotates, it can drive the left wheel of the vehicle to rotate, and when the first half-shaft 21 rotates, it can drive the right wheel of the vehicle to rotate, wherein a portion of the differential housing 23 is clamped between the second bearing 32 and the first half-shaft 21, so that when the second half-shaft 41 rotates, the second half-shaft 41 drives the multiple differential gears 22 to revolve around the first axis through the differential housing 23, and when the multiple differential gears 22 revolve around the first axis, they drive the first half-shaft 21 to rotate.

[0057] Among them, when the vehicle turns, the path that the left wheel of the vehicle turns is different from the path that the right wheel of the vehicle turns. In order to prevent the vehicle from slipping, the rotation speeds of the left wheel and the right wheel need to be different. In order to adapt to this situation, the rotation speeds of the first half shaft 21 and the second half shaft 41 need to be different, that is, the rotation speeds of the first half shaft 21 and the differential housing 23 are different. Specifically, when the plurality of differential gears 22 do not rotate, the rotation speeds of the differential housing 23 and the first half shaft 21 are the same. When the differential gears 22 rotate, the rotation speeds of the differential housing 23 and the first half shaft 21 are different, so that the rotation speeds of the first half shaft 21 and the second half shaft 41 are different, and the left and right wheels rotate at different speeds.

[0058] In summary, a portion of the differential housing 23 is clamped between the second bearing 32 and the first half shaft 21, and the second bearing 32 is used to support the rotation of the differential housing 23 alone, so as to prevent the differential housing 23 from directly driving the first half shaft 21 to rotate, so as to realize that the differential housing 23 and the first half shaft 21 rotate at different speeds, thereby adapting to the situation where the vehicle turns.

[0059] In some optional embodiments of the present invention, Figure 3 As shown, the oil guide groove 113 is located at the bottom of the accommodating cavity 11, and part of the inner wall of the accommodating cavity 11 is recessed outward to form a second oil storage cavity 112. The bottom end of the second oil storage cavity 112 is lower than the bottom surface of the oil guide groove 113, so that it is convenient to increase the depth of the second oil storage cavity 112, and then expand the volume of the second oil storage cavity 112, so that the second oil storage cavity 112 can store more oil, and at the same time can increase the oil supply area of ​​the second oil storage cavity to the second bearing 32, thereby improving the lubrication efficiency of the second bearing 32, and improving the lubrication effect of the second bearing 32 and the parts near the second bearing 32.

[0060] It should be explained here that outward or inward is relative to the central axis of the accommodating cavity 11. The direction in which the inner wall of the accommodating cavity 11 is away from the central axis of the accommodating cavity 11 is the outside, and the direction in which the inner wall of the accommodating cavity 11 is close to the central axis of the accommodating cavity 11 is the inside.

[0061] In some embodiments of the present invention, Figure 2 As shown, the side wall of the accommodating chamber 11 defines an oil drain groove 114, and the oil inlet of the oil drain groove 114 is connected to the top of the second oil storage chamber 112. After the oil fills the second oil storage chamber 112, the excess oil can enter the oil drain groove 114 through the oil inlet of the oil drain groove 114 and flow out along the oil drain groove 114 to avoid excessive oil in the accommodating chamber 11 and to avoid the oil level being too high to affect the rotation of the first half shaft 21.

[0062] Among them, the oil inlet of the oil drain groove 114 is higher than the top of the oil guide groove 113, so that after the second oil storage chamber 112 is full, the oil in the second oil storage chamber 112 will preferentially flow into the oil guide groove 113, and then flow to the first oil storage chamber 111 through the oil guide groove 113. After the oil in the first oil storage chamber 111, the second oil storage chamber 112 and the oil guide groove 113 are all full, the oil in the second oil storage chamber 112 will flow into the oil drain groove 114, so as to ensure that the oil in the first oil storage chamber 111, the second oil storage chamber 112 and the oil guide groove 113 are replenished preferentially.

[0063] In some embodiments, the oil drain groove 114 is located on the left side of the second oil storage chamber 112, and the oil drain groove 114 extends downward from right to left, wherein the right end of the oil drain groove 114 is the oil inlet of the oil drain groove 114. After the oil in the first oil storage chamber 111, the second oil storage chamber 112 and the oil guide groove 113 are full, the oil in the second oil storage chamber 112 can enter the oil drain groove 114 through the oil inlet of the oil drain groove 114, and flow out to the left and downward along the oil drain groove 114.

[0064] In some optional embodiments of the present invention, Figure 2 , Figure 3 As shown, the housing 10 defines an oil storage chamber 12. In the extension direction of the first half-shaft 21, the oil storage chamber 12 is arranged on one side of the accommodating chamber 11. The oil drain groove 114 is connected to the oil storage chamber 12. Excess oil in the accommodating chamber 11 can flow into the oil storage chamber 12 through the oil drain groove 114 to store the oil and avoid waste of the oil.

[0065] In some specific embodiments of the present invention, Figure 2 , Figure 3 As shown, the reducer also includes a driving gear 42, which is rotatably disposed in the housing 10. The driving gear 42 is connected to the first half shaft 21 to transmit driving force to the first half shaft 21. When the driving gear 42 rotates, it drives the first half shaft 21 to rotate, so that the first half shaft 21 can drive the wheels to rotate.

[0066] At least a portion of the driving gear 42 is arranged in the oil storage chamber 12 to disturb the oil. The inner wall of the oil storage chamber 12 is provided with an oil supply channel 121 connected to the accommodating chamber 11. When the driving gear 42 rotates, the driving gear 42 can drive the oil on the bottom wall of the oil storage chamber 12 to flow upward and enter the accommodating chamber 11 through the oil supply channel 121 to guide the oil to the accommodating chamber 11, thereby realizing the flow of oil in the accommodating chamber 11 and the oil storage chamber 12. The driving gear 42 is used to drive the oil in the oil storage chamber 12 back to the accommodating chamber 11, so that the oil flows in the accommodating chamber 11 and the oil storage chamber 12, which effectively solves the problem of oil stirring loss caused by the need to increase too much lubricating oil, fully realizes the balance between oil volume and efficiency, and can also cool the oil.

[0067] Among them, the oil outlet of the oil supply channel 121 is higher than the oil inlet of the oil drain groove 114, so as to form a flow path between the accommodating chamber 11, the oil drain groove 114 and the oil supply channel 121, so that the oil can lubricate the components in the accommodating chamber 11 and the oil storage chamber 12 when flowing.

[0068] Specifically, if the oil inlet of the oil drain groove 114 is higher than the oil outlet of the oil supply channel 121, the oil entering the oil storage chamber 12 from the oil drain groove 114 will gather in the oil supply channel 121. Only when the liquid level in the oil storage chamber 12 reaches a certain height will the oil in the oil supply channel 121 enter the accommodating chamber 11, affecting the lubrication efficiency of the oil.

[0069] In some embodiments, the oil storage chamber 12 is located on the left side of the accommodating chamber 11, the oil supply channel 121 extends downwardly from left to right, and the right end of the oil supply channel 121 is the oil outlet of the oil supply channel 121. The oil drain groove 114 is located below the oil supply channel 121, and the oil drain groove 114 extends upwardly from left to right, and the right end of the oil supply channel 121 is its oil outlet. The right end of the oil drain groove 114 is its oil inlet, and the oil outlet of the oil supply channel 121 is higher than the oil inlet of the oil drain groove 114.

[0070] Among them, the oil drain groove 114 connects the bottom of the oil storage chamber 12 and the second oil storage chamber 112. After the oil in the first oil storage chamber 111, the second oil storage chamber 112 and the oil guide groove 113 are full, the oil in the second oil storage chamber 112 will flow downward along the oil drain groove 114 to the bottom of the oil storage chamber 12. When the driving gear 42 rotates, the driving gear 42 drives the oil at the bottom of the oil storage chamber 12 to flow upward toward the oil inlet of the oil supply channel 121, and downward along the oil supply channel 121 into the accommodating chamber 11.

[0071] In some embodiments, Figure 1 As shown, the reducer also includes an oil delivery channel 13 connected to the oil supply pump, and the oil outlet of the oil delivery channel 13 is connected to the accommodating chamber 11. The oil supply pump is used to supply oil to the accommodating chamber 11, which is convenient for effectively controlling the output amount of lubricating oil and accurately controlling the output speed of lubricating oil, avoiding the rotation of the first half shaft 21 affected by excessive oil supply to the accommodating chamber 11, and facilitating the transmission efficiency of the reducer. At the same time, it can also prevent excessive oil in the accommodating chamber 11 from flowing into the oil storage chamber 12, avoiding affecting the rotation of the driving gear 42, and avoiding affecting the stirring of the oil in the oil storage chamber 12 by the driving gear 42.

[0072] The oil outlet of the oil delivery channel 13 is higher than the oil outlet of the oil supply channel 121 to prevent the oil flowing out of the oil supply channel 121 from flowing into the oil delivery channel 13, thereby preventing the oil in the oil delivery channel 13 from flowing back and affecting the operation of the oil supply pump.

[0073] In some examples, such as Figure 2As shown, the oil guide groove 113 is located at the bottom of the accommodating cavity 11, so that the oil in the accommodating cavity 11 is stored in the oil guide groove 113 under the action of gravity, so that the oil can flow along the oil guide groove 113 in the first oil storage cavity 111 and the second oil storage cavity 112, so as to lubricate the components located at both ends of the first half shaft 21.

[0074] Among them, the oil guide groove 113, the oil delivery channel 13, the oil drain groove 114 and the oil supply channel 121 are arranged at intervals along the circumference of the accommodating chamber 11, so that the oil guide groove 113, the oil delivery channel 13, the oil drain groove 114 and the oil supply channel 121 are set at appropriate positions, so that the oil guide groove 113, the oil delivery channel 13, the oil drain groove 114 and the oil supply channel 121 are not connected to each other and are all connected to the accommodating chamber 11.

[0075] In some embodiments, the oil outlet of the oil delivery channel 13 is staggered with the oil guide groove 113 in the up and down direction. When the oil supply pump delivers oil into the accommodating chamber 11, the impact of the oil on the first half-shaft 21 can be reduced, and the influence of the oil supply pump on the rotation of the first half-shaft 21 when delivering oil into the accommodating chamber 11 through the oil delivery channel 13 can be reduced.

[0076] In some optional embodiments of the present invention, Figure 3 As shown, the reducer also includes a differential housing 23, and a driving gear 42 is fixed to the differential housing 23. The driving gear 42 can drive the differential gear 22 to rotate through the differential housing 23, and then drive the first half shaft 21 to rotate through the differential gear 22, so that the first half shaft 21 can drive the wheels to rotate.

[0077] In some embodiments, the reducer includes a motor and a gear set, the motor is used to drive the first gear in the gear set to rotate, the drive gear 42 is meshed with the second gear in the gear set, and the gear set is used to reduce the speed of the motor and increase the torque to transmit a larger torque to the drive gear 42, so that the drive gear 42 can smoothly drive the differential housing 23 to rotate, and the differential housing 23 is used to drive the differential gear 22 to rotate, so that the differential gear 22 can drive the first half shaft 21 to rotate.

[0078] When the driving gear 42 rotates and stirs the oil in the oil storage chamber 12, the driving gear 42 and the second gear can be lubricated. In the process of the oil being transferred upward by the driving gear 42, the oil can reach the gear set to lubricate the gears in the gear set.

[0079] The reducer also includes a second half-shaft 41, a driving gear 42 is externally mounted on the second half-shaft 41 and fixed to the second half-shaft 41, the second half-shaft 41, the driving gear 42 and the differential housing 23 are fixed together, when the second half-shaft 41 rotates, the left wheel of the vehicle can be driven to rotate, when the first half-shaft 21 rotates, the right wheel of the vehicle can be driven to rotate, under the drive of the motor, the driving gear 42 directly drives the second half-shaft 41 to rotate, and at the same time, the driving gear 42 drives the first half-shaft 21 to rotate through the differential housing 23.

[0080] When the differential gear 22 does not rotate, the first half shaft 21 and the second half shaft 41 rotate at the same speed, so that the right wheel and the left wheel rotate at the same speed. When the differential gear 22 rotates, the first half shaft 21 and the second half shaft 41 rotate at different speeds, so that the right wheel and the left wheel rotate at different speeds.

[0081] In some embodiments of the present invention, Figure 3 As shown, the housing 10 includes a box body 101 and a sleeve 102 . The box body 101 and the sleeve 102 are an integral piece. An accommodating cavity 11 is defined in the sleeve 102 . The second end portion extends into the box body 101 to cooperate with the components in the box body 101 .

[0082] In some embodiments, shoulders are provided on both sides of the sleeve in the length direction to limit the positions of the first bearing 31 and the second bearing 32. This results in the sleeve having a smaller size in the middle part and a larger size at both ends. When manufacturing the housing 10, both sides can be demolded simultaneously.

[0083] In some examples, the reducer also includes an oil seal 51, which is used to seal the open opening to prevent the oil in the accommodating chamber 11 from leaking out of the reducer. The first bearing 31, the second bearing 32, and the oil seal 51 are detachably arranged on the housing 10, and each component can be designed by multiple designers and manufactured separately, which is convenient for shortening the manufacturing period.

[0084] The following is based on the attached Figure 1 -Attached Figure 3 A specific embodiment of the utility model is described.

[0085] The reducer includes a housing 101, a sleeve 102, a motor, a gear set, a driving gear 42, a plurality of differential gears 22, a differential housing 23 and a first half shaft 21. The housing 101 and the sleeve 102 are an integral part. An accommodating chamber 11 is defined in the sleeve 102. The first half shaft 21 is rotatably disposed in the accommodating chamber 11 through a first bearing 31 and a second bearing 32. The driving gear 42, a plurality of differential gears 22 and a differential housing 23 are disposed in the housing 101. The driving gear 42 is fixed to the differential housing 23. The plurality of differential gears 22 are rotatably disposed in the differential housing 23. The differential gears 22 are meshed with the first half shaft 21.

[0086] The motor drives the drive gear 42 to rotate through the gear set. The gear set is used to reduce the speed of the motor and increase the torque so as to transmit a larger torque to the drive gear 42 to drive the differential housing 23 to rotate. When the differential housing 23 rotates, the differential housing 23 drives multiple differential gears 22 to rotate, so that the differential gear 22 can drive the first half shaft 21 to rotate, and then drive the wheels to rotate.

[0087] The sleeve 102 is provided with an oil delivery channel 13, which is connected to the oil supply pump. A portion of the bottom wall of the accommodating chamber 11 is recessed downward to define an oil guide groove 113. The oil guide groove 113 extends in the left-right direction. The bottom walls of the accommodating chamber 11 on both sides of the oil guide groove 113 are recessed outward to define a first oil storage chamber 111 and a second oil storage chamber 112. Both the first oil storage chamber 111 and the second oil storage chamber 112 are connected to the oil guide groove 113.

[0088] The housing 101 defines an oil storage chamber 12. The housing 101 is provided with an oil drain groove 114 and an oil supply channel 121. The oil supply channel 121 is located above the oil drain groove 114. The oil drain groove 114 connects the oil storage chamber 12 and the second oil storage chamber 112. The oil drain groove 114 extends obliquely downward from right to left. The oil inlet of the oil drain groove 114 is connected to the top of the second oil storage chamber 112. The oil inlet of the oil drain groove 114 is higher than the top of the oil guide groove 113. The oil supply channel 121 connects the oil storage chamber 12 and the accommodating chamber 11. The oil supply channel 121 extends obliquely downward from left to right. The oil outlet of the oil supply channel 121 is lower than the oil outlet of the oil delivery channel 13.

[0089] Among them, the oil supply pump is used to transport oil to the oil delivery channel 13. Under the action of gravity, the oil in the oil delivery channel 13 flows into the second oil storage chamber 112. After the oil in the second oil storage chamber 112 is full, the oil flows to the oil guide groove 113 and flows along the oil guide groove 113 to the first oil storage chamber 111. After the oil in the second oil storage chamber 112, the first oil storage chamber 111 and the oil guide groove 113 are all full, the oil in the second oil storage chamber 112 enters the oil drain groove 114 and flows downward along the oil drain groove 114 to the bottom of the oil storage chamber 12. When the driving gear 42 rotates, the driving gear 42 drives the oil at the bottom of the oil storage chamber 12 to flow upward toward the oil inlet of the oil supply channel 121, and enters the accommodating chamber 11 downward along the oil supply channel 121. Under the action of gravity, the oil entering the accommodating chamber will enter the second oil storage chamber 112, the first oil storage chamber 111 and the oil guide groove 113 again. After the second oil storage chamber 112, the first oil storage chamber 111 and the oil guide groove 113 are full of oil, the oil in the second oil storage chamber 112 enters the oil drain groove 114 again and flows downward along the oil drain groove 114 to the bottom of the oil storage chamber 12. In this way, the oil can fully lubricate the components in the accommodating chamber 11 and the oil storage chamber 12 during the flow, thereby reducing lubrication dead angles and improving the lubrication effect of the components in the reducer.

[0090] In addition, the driving gear 42 is used to drive the oil in the oil storage chamber 12 back to the accommodating chamber 11, which effectively solves the problem of oil stirring loss caused by the need to add too much lubricating oil, fully achieves the balance between oil volume and efficiency, and can also cool the oil.

[0091] The transmission mechanism according to the embodiment of the present utility model is described below. The transmission mechanism according to the embodiment of the present utility model comprises the reducer according to the above embodiment of the present utility model.

[0092] According to the transmission mechanism of the embodiment of the utility model, by utilizing the reducer according to the above-mentioned embodiment of the utility model, by providing an oil guide groove 113, a first oil storage chamber 111 adjacent to the first end, and a second oil storage chamber 112 adjacent to the second end, the oil can be guided to the two ends of the first half shaft 21 to lubricate the components located at the two ends of the first half shaft 21, thereby reducing the lubrication dead angle and improving the lubrication effect on the components in the reducer.

[0093] The vehicle according to the embodiment of the present utility model is described below. The vehicle according to the embodiment of the present utility model comprises the transmission mechanism according to the above embodiment of the present utility model.

[0094] According to the vehicle of the embodiment of the utility model, by utilizing the transmission mechanism according to the above-mentioned embodiment of the utility model, by providing an oil guide groove 113, a first oil storage chamber 111 adjacent to the first end, and a second oil storage chamber 112 adjacent to the second end, the oil can be guided to the two ends of the first half shaft 21 to lubricate the components located at the two ends of the first half shaft 21, thereby reducing the lubrication dead angle and improving the lubrication effect on the components in the reducer.

[0095] In addition, by improving the lubrication effect of the internal parts of the reducer, the efficiency of the reducer is improved, while reducing component failures and quality problems caused by poor lubrication, which is conducive to improving the economy and reliability of the entire vehicle and alleviating after-sales complaints.

[0096] Other structures and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0097] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0098] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0099] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0100] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0101] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A reducer, characterized in that: include: A housing (10), wherein the housing (10) defines a receiving chamber (11); a first half shaft (21), the first half shaft (21) being arranged in the accommodating cavity (11) and comprising a first end portion and a second end portion, The inner wall of the accommodating cavity (11) is provided with a first oil storage cavity (111), a second oil storage cavity (112) and an oil guide groove (113); the first oil storage cavity (111) is arranged adjacent to the first end portion, the second oil storage cavity (112) is arranged adjacent to the second end portion, and the oil guide groove (113) connects the first oil storage cavity (111) and the second oil storage cavity (112).

2. The reducer according to claim 1, characterized in that: The invention also comprises a first bearing (31) and a second bearing (32), wherein the first bearing (31) is sleeved on the first half shaft (21) and is located on a side of the first oil storage chamber (111) facing the first end, and the second bearing (32) is sleeved on the first half shaft (21) and is located on a side of the second oil storage chamber (112) facing the second end.

3. The reducer according to claim 2, characterized in that: The oil guide groove (113) is located at the bottom of the accommodating cavity (11), and the bottom end of the inner surface of the outer ring of the first bearing (31) and the bottom end of the inner surface of the outer ring of the second bearing (32) are lower than the bottom surface of the oil guide groove (113).

4. The reducer according to claim 2, characterized in that: Also includes: A differential gear (22), the differential gear (22) cooperates with the second end portion to drive the first half shaft (21) to rotate; A differential housing (23), wherein the differential gear (22) is disposed in the differential housing (23), and a portion of the differential housing (23) is clamped between the second bearing (32) and the first half shaft (21).

5. The reducer according to claim 1, characterized in that: The side wall of the accommodating cavity (11) defines an oil drain groove (114), an oil inlet of the oil drain groove (114) is connected to the top end of the second oil storage cavity (112), and the oil inlet of the oil drain groove (114) is higher than the top end of the oil guide groove (113).

6. The reducer according to claim 5, characterized in that: The housing (10) defines an oil storage chamber (12), and in the extension direction of the first half-shaft (21), the oil storage chamber (12) is arranged on one side of the accommodating chamber (11); the oil drain groove (114) is in communication with the oil storage chamber (12).

7. The reducer according to claim 6, characterized in that: The invention also comprises a driving gear (42), wherein the driving gear (42) is connected to the first half shaft (21) so as to transmit driving force to the first half shaft (21); the driving gear (42) is rotatably arranged in the housing (10) and at least a part of the driving gear (42) is arranged in the oil storage chamber (12) so as to disturb the oil; the inner wall of the oil storage chamber (12) is provided with an oil supply channel (121) which is connected to the accommodating chamber (11); the oil outlet of the oil supply channel (121) is higher than the oil inlet of the oil drain groove (114).

8. The reducer according to claim 7, characterized in that: It also includes an oil delivery channel (13) connected to the oil supply pump, the oil outlet of the oil delivery channel (13) being in communication with the accommodating chamber (11), and the oil outlet of the oil delivery channel (13) being higher than the oil outlet of the oil supply channel (121).

9. The reducer according to claim 8, characterized in that: The oil guide groove (113) is located at the bottom of the accommodating cavity (11), and the oil guide groove (113), the oil delivery channel (13), the oil drain groove (114) and the oil supply channel (121) are arranged at intervals along the circumference of the accommodating cavity (11).

10. The reducer according to claim 7, characterized in that: A differential case (23) is also included, and the drive gear (42) is fixed to the differential case (23).

11. The reducer according to any one of claims 1 to 10, characterized in that: The housing (10) comprises a box body (101) and a sleeve (102); the box body (101) and the sleeve (102) are an integral part; the accommodating cavity (11) is defined in the sleeve (102); and the second end portion extends into the box body (101).

12. A transmission mechanism, characterized in that: The reducer comprises the reducer as described in any one of claims 1 to 11.

13. A vehicle, characterized in that: Includes the transmission mechanism described in claim 12.

Images