Speed reducer, driving assembly and vehicle

Abstract

The utility model relates to the technical field of vehicles, and discloses a speed reducer, a driving assembly and a vehicle. The ventilation piece is arranged in the shell and is connected with the shell; and the cover plate is detachably connected with the ventilation piece, an exhaust channel is defined between the cover plate and the ventilation piece, and the exhaust channel communicates with the space in the shell and the external environment. According to the speed reducer, due to the fact that the exhaust channel can be sealed through the cover plate, the exhaust channel does not need to be sealed through box closing of the front shell and the rear shell, and therefore the same ventilation pieces do not need to be arranged in the front shell and the rear shell to achieve sealing of the exhaust channel. The exhaust passage can be sealed only by arranging the ventilation piece in the front shell or the rear shell, so that the number of the ventilation pieces is reduced, the internal space of the shell is optimized, and the internal space of the shell is arranged more freely.

Description

Technical Field

[0001] The utility model relates to the technical field of drive systems, in particular to a speed reducer, a drive assembly and a vehicle. Background Art

[0002] A ventilation structure is provided in the speed reducer housing for exhausting air from the speed reducer housing to prevent excessive pressure and temperature in the speed reducer housing. However, a part of the current ventilation structure is arranged in the front housing of the speed reducer, and the other part is arranged at a position corresponding to the front housing in the rear housing of the speed reducer. Then, the ventilation structure is sealed by combining the front housing and the rear housing of the speed reducer. Both the rear housing and the front housing of the speed reducer are provided with ventilation structures, which limits the internal space layout of the speed reducer housing and makes the internal space of the speed reducer housing compact. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a speed reducer, which optimizes the internal space of the housing and makes the internal space layout of the housing more free.

[0004] The utility model also provides a drive assembly, including the above-mentioned speed reducer.

[0005] The utility model also provides a vehicle, including the above-mentioned drive assembly.

[0006] The speed reducer according to the embodiment of the utility model includes: a housing; a ventilation member, which is arranged in the housing and connected to the housing; a cover plate, which is detachably connected to the ventilation member, and an exhaust passage is defined between the cover plate and the ventilation member, and the exhaust passage is communicated with the space inside the housing and the external environment.

[0007] In the speed reducer according to the embodiment of the utility model, by arranging the ventilation member in the housing of the speed reducer, the ventilation member is connected to the housing; the cover plate is detachably connected to the ventilation member, and an exhaust passage is defined between the cover plate and the ventilation member, and the exhaust passage is communicated with the space inside the housing and the external environment. Since the exhaust passage can be sealed by the cover plate and there is no need to seal the exhaust passage by combining the front housing and the rear housing, there is no need to provide the same ventilation member in both the front housing and the rear housing to seal the exhaust passage. Only by arranging the ventilation member in the front housing or the rear housing can the exhaust passage be sealed. Therefore, the arrangement of the ventilation member is reduced, the internal space of the housing is optimized, and the internal space layout of the housing is made more free.

[0008] In some embodiments of the utility model, the exhaust passage includes a first exhaust chamber and a second exhaust chamber which are communicated with each other. The first exhaust chamber is communicated with the external environment, and the second exhaust chamber is communicated with the space inside the housing.

[0009] In some embodiments of the present utility model, the ventilation member has a ventilation groove, the cover plate seals the notch of the ventilation groove, the inner wall of the ventilation groove and the wall surface of the cover plate facing the ventilation groove define the exhaust passage, a partition rib is provided in the ventilation groove, and the first exhaust chamber and the second exhaust chamber are located on both sides of the partition rib.

[0010] In some embodiments of the present utility model, at least one of the ventilation member and the cover plate has a ventilation hole, and the second exhaust chamber communicates with the space inside the housing through the ventilation hole.

[0011] In some embodiments of the present utility model, the ventilation hole is provided on the ventilation member and at one end of the ventilation member facing the cover plate.

[0012] In some embodiments of the present utility model, the ventilation hole is provided on the cover plate, and the diameter of the ventilation hole is 3-5 mm.

[0013] In some embodiments of the present utility model, the partition rib is provided on the bottom wall of the ventilation groove and is connected to the bottom wall of the ventilation groove. The end surface of the partition rib facing away from the bottom wall of the ventilation groove is spaced apart from the cover plate, and the partition rib is connected to the inner peripheral wall of the ventilation groove.

[0014] In some embodiments of the present utility model, the partition rib is provided on the bottom wall of the ventilation groove and is connected to the bottom wall of the ventilation groove. The end surface of the partition rib facing away from the bottom wall of the ventilation groove abuts against the cover plate, and the partition rib is spaced apart from the inner peripheral wall of the ventilation groove.

[0015] In some embodiments of the present utility model, the side of the cover plate facing the ventilation groove has a protruding flow channel rib, and the flow channel rib abuts against the end surface of the partition rib facing away from the bottom wall of the ventilation groove.

[0016] In some embodiments of the present utility model, the protruding height of the flow channel rib is 0.5-1 mm.

[0017] In some embodiments of the present utility model, the side of the cover plate facing away from the ventilation member has a clamping portion.

[0018] In some embodiments of the present utility model, in the direction from the ventilation member to the cover plate, the clamping portion extends obliquely, and the projection of the clamping portion on the cover plate completely falls within the cover plate, or the clamping portion is perpendicular to the end surface of the cover plate facing away from the ventilation member.

[0019] The drive assembly according to the embodiment of the present utility model includes the above-mentioned speed reducer.

[0020] According to the drive assembly of the embodiment of the present utility model, by providing the above-mentioned speed reducer, the venting member is arranged in the housing of the speed reducer, and the venting member is connected to the housing; the cover plate is detachably connected to the venting member, and an exhaust passage is defined between the cover plate and the venting member. The exhaust passage is in communication with both the space inside the housing and the external environment. Since the exhaust passage can be sealed by the cover plate, there is no need to seal the exhaust passage by mating the front housing and the rear housing. Thus, there is no need to provide the same venting member in both the front housing and the rear housing to seal the exhaust passage. Only by providing a venting member in either the front housing or the rear housing can the exhaust passage be sealed. Therefore, the number of venting members is reduced, the space inside the housing is optimized, and the layout of the space inside the housing becomes more flexible.

[0021] A vehicle according to an embodiment of the present utility model includes the above-mentioned drive assembly.

[0022] According to the vehicle of the embodiment of the present utility model, by providing the above-mentioned drive assembly, a speed reducer is provided, the venting member is arranged in the housing of the speed reducer, and the venting member is connected to the housing; the cover plate is detachably connected to the venting member, and an exhaust passage is defined between the cover plate and the venting member. The exhaust passage is in communication with both the space inside the housing and the external environment. Since the exhaust passage can be sealed by the cover plate, there is no need to seal the exhaust passage by mating the front housing and the rear housing. Thus, there is no need to provide the same venting member in both the front housing and the rear housing to seal the exhaust passage. Only by providing a venting member in either the front housing or the rear housing can the exhaust passage be sealed. Therefore, the number of venting members is reduced, the space inside the housing is optimized, and the layout of the space inside the housing becomes more flexible.

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

[0024] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

[0025] Figure 1 is a front view of a speed reducer according to Embodiment 1 of the present utility model;

[0026] Figure 2 is Figure 1 an enlarged view of part A in

[0027] Figure 3 is Figure 1 a cross-sectional view taken along line B-B in

[0028] Figure 4 is a front view of a speed reducer according to Embodiment 2 of the present utility model;

[0029] Figure 5 is Figure 4 an enlarged view of portion C in

[0030] Figure 6 is Figure 4 a sectional view taken along line D-D in

[0031] Reference numerals:

[0032] 10, speed reducer;

[0033] 1, vent component; 11, vent groove; 111, bottom wall; 112, inner peripheral wall; 12, exhaust passage; 121, first exhaust chamber; 122, second exhaust chamber; 13, partition rib;

[0034] 2, cover plate; 21, clamping portion; 22, flow channel rib;

[0035] 3, vent hole;

[0036] 20, housing. Detailed implementation manners

[0037] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0038] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship 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 should not be construed as a limitation of the present utility model. In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0039] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] Reference is made below to Figures 1 - 6 describe the speed reducer 10 according to an embodiment of the present utility model.

[0041] As Figures 1 - 6 shown, the speed reducer 10 according to an embodiment of the present utility model includes: a vent member 1 and a cover plate 2.

[0042] Specifically, as Figures 1 - 6 shown, the vent member 1 is disposed inside the housing 20 of the speed reducer 10, and the vent member 1 is connected to the housing 20; the cover plate 2 is detachably connected to the vent member 1, and an exhaust passage 12 is defined between the cover plate 2 and the vent member 1, and the exhaust passage 12 communicates with both the space inside the housing 20 and the external environment.

[0043] Among them, it should be noted that the housing 20 includes a front housing and a rear housing, the front housing and the rear housing are detachably connected, and a sealed space inside the housing 20 is defined between the front housing and the rear housing, so as to prevent the oil inside the housing 20 from leaking out. The exhaust passage 12 communicates with both the space inside the housing 20 and the external environment, so that the gas in the space inside the housing 20 can be discharged to the outside through the exhaust passage 12, thereby preventing the pressure inside the housing 20 from being too high, preventing oil leakage, and at the same time, the high-temperature gas can be discharged in time to take away heat and ensure the normal operation of the speed reducer 10. The exhaust passage 12 and the external environment can be connected through a ventilation pipe or directly connected.

[0044] It can be understood that in the prior art, in order to facilitate the cleaning of the exhaust passage 12 and the maintenance of the structure inside the exhaust passage 12, the same vent member 1 is usually provided at the opposite positions inside the front housing and the rear housing, and the ends of the vent members 1 on the front housing and the rear housing facing each other are open, and the exhaust passage 12 is defined between the vent members 1 on the front housing and the rear housing, so as to seal the exhaust passage 12 when the front housing and the rear housing are assembled, and to expose the exhaust passage 12 by disassembling the front housing and the rear housing, so as to realize the cleaning and maintenance of the exhaust passage 12.

[0045] In the present utility model, since the exhaust passage 12 can be sealed by the cover plate 2, it is not necessary to seal the exhaust passage 12 by mating the front housing and the rear housing. Therefore, it is not necessary to provide the same vent member 1 in both the front housing and the rear housing to seal the exhaust passage 12. It is only necessary to provide the vent member 1 in either the front housing or the rear housing to seal the exhaust passage 12. Therefore, the setting of the vent member 1 is reduced, the space inside the housing 20 is optimized, and the internal space layout of the housing 20 is made more flexible.

[0046] In addition, since the cover plate 2 and the vent member 1 are detachably connected, for example, by bolts, when it is necessary to clean or maintain the exhaust passage 12, the front housing and the rear housing can be disassembled first, and then the cover plate 2 can be removed, so that the exhaust passage 12 is exposed, thereby realizing the cleaning and maintenance of the exhaust passage 12.

[0047] Furthermore, both the cover plate 2 and the vent member 1 are provided in one of the front housing or the rear housing of the speed reducer 10. Thus, the space in the other housing is larger, which facilitates the optimization and layout of the space in the other housing.

[0048] For example, if both the cover plate 2 and the vent member 1 are provided in the front housing, then it is not necessary to provide the cover plate 2 and the vent member 1 in the rear housing, so that the space in the rear housing is optimized, which is convenient for the space layout in the rear housing. Or, if both the cover plate 2 and the vent member 1 are provided in the rear housing, then it is not necessary to provide the cover plate 2 and the vent member 1 in the front housing, so that the space in the front housing is optimized, which is convenient for the space layout in the front housing.

[0049] Furthermore, as Figure 1 、 Figure 2 、 Figure 4 and Figure 5 shown, the cover plate 2 and the vent member 1 are connected by a plurality of fasteners such as bolts. The plurality of fasteners are evenly arranged in the circumferential direction of the cover plate 2. Thus, on the one hand, the connection reliability between the cover plate 2 and the vent member 1 is improved. On the other hand, the uniform arrangement of the plurality of fasteners in the circumferential direction of the cover plate 2 can make the force between the cover plate 2 and the vent member 1 uniform, avoid the cover plate 2 from warping due to uneven force, and improve the sealing performance.

[0050] For example, in the examples shown in Figure 2 、 Figure 3 、 Figure 5 and Figure 6 shown, the cover plate 2 and the vent member 1 are connected by two fasteners. However, the present utility model is not limited to this. The cover plate 2 and the vent member 1 can also be connected by more fasteners, such as 3, 4, 5 or 6, etc.

[0051] Furthermore, the cover plate 2 is made of an aluminum alloy plate or an engineering plastic plate, taking into account strength, light weight and corrosion resistance.

[0052] According to the speed reducer 10 of the embodiment of the present utility model, by arranging the vent member 1 inside the housing 20 of the speed reducer 10, the vent member 1 is connected to the housing 20; the cover plate 2 is detachably connected to the vent member 1, and an exhaust passage 12 is defined between the cover plate 2 and the vent member 1. The exhaust passage 12 is communicated with the space inside the housing 20 and the external environment. Since the exhaust passage 12 can be sealed through the cover plate 2, there is no need to seal the exhaust passage 12 by combining the front housing and the rear housing. Therefore, there is no need to provide the same vent member 1 in both the front housing and the rear housing to seal the exhaust passage 12. Only by arranging the vent member 1 in the front housing or the rear housing can the exhaust passage 12 be sealed. Therefore, the arrangement of the vent member 1 is reduced, the space inside the housing 20 is optimized, and the internal space layout of the housing 20 is made more flexible.

[0053] In some embodiments of the present utility model, as Figure 3 and Figure 6 shown, the exhaust passage 12 includes a first exhaust chamber 121 and a second exhaust chamber 122 that are communicated with each other. The first exhaust chamber 121 is communicated with the external environment, and the second exhaust chamber 122 is communicated with the space inside the housing 20. It can be understood that by dividing the exhaust passage 12 into the first exhaust chamber 121 and the second exhaust chamber 122 that are communicated with each other, the path for external impurities such as dust to enter the space inside the housing 20 is increased. Thus, the sealing effect is improved, and the probability of external impurities such as dust entering the space inside the housing 20 is reduced. At the same time, the path for the oil fluid to flow to the external environment can also be increased, thereby reducing the leakage of the oil fluid.

[0054] During exhaust, the flow path of the air flow is: the air flow enters the second exhaust chamber 122 from the space inside the housing 20, then flows to the first exhaust chamber 121, and finally is discharged to the external environment.

[0055] In some embodiments of the present utility model, as Figure 3 and Figure 6 shown, a partition rib 13 is provided inside the exhaust passage 12. The first exhaust chamber 121 and the second exhaust chamber 122 are located on both sides of the partition rib 13 (for example, on both sides in the thickness direction of the partition rib 13). It can be understood that by providing the partition rib 13, the exhaust passage 12 is divided into the first exhaust chamber 121 and the second exhaust chamber 122. At the same time, through the blocking effect of the partition rib 13, the leakage of the oil fluid can be further blocked, and impurities can be blocked from entering the space inside the housing 20, improving the sealing performance.

[0056] Furthermore, as Figure 3 and Figure 6As shown, the ventilation member 1 has a ventilation groove 11. The cover plate 2 seals the notch of the ventilation groove 11. The inner wall of the ventilation groove 11 and the wall surface of the cover plate 2 facing the ventilation groove 11 define an exhaust passage 12. The partition rib 13 is arranged in the ventilation groove 11. Thus, the exhaust passage 12 of the present utility model is formed.

[0057] In some embodiments of the present utility model, as Figures 1 - 6 shown, at least one of the ventilation member 1 and the cover plate 2 has a ventilation hole 3. The second exhaust chamber 122 communicates with the space in the housing 20 through the ventilation hole 3. Thus, the exhaust passage 12 is communicated with the space in the housing 20, so that the gas can be discharged into the exhaust passage 12.

[0058] In some embodiments of the present utility model, as Figures 1 - 3 shown, the ventilation hole 3 is arranged on the ventilation member 1 (for example, in the present utility model, the ventilation hole 3 can be arranged on the peripheral wall of the ventilation member 1), and is arranged at one end of the ventilation member 1 facing the cover plate 2. It can be understood that the ventilation hole 3 is arranged at one end of the ventilation member 1 facing the cover plate 2, so that the ventilation hole 3 can be far away from the wall surface of the housing 20, thereby preventing the oil remaining on the wall surface of the housing 20 from entering the exhaust passage 12 through the ventilation hole 3. Thus, the sealing performance is improved. In addition, the ventilation hole 3 is arranged at one end of the ventilation member 1 facing the cover plate 2, which is convenient for the processing of the ventilation hole 3.

[0059] Furthermore, as Figures 1 - 3 shown, one side of the ventilation hole 3 facing the cover plate 2 is open, which is further convenient for the processing of the ventilation hole 3.

[0060] In some embodiments of the present utility model, as Figures 4 - 6 shown, the ventilation hole 3 is arranged on the cover plate 2. The diameter of the ventilation hole 3 is 3 - 5 mm, such as 3 mm, 3.5 mm, 4 mm or 5 mm, etc. Thus, the diameter of the ventilation hole 3 is appropriate. On the one hand, it prevents the ventilation hole 3 from being too large, resulting in the entry of oil, and improves the sealing performance. On the other hand, it prevents the ventilation hole 3 from being too small, affecting the exhaust efficiency.

[0061] In addition, when the ventilation hole 3 is arranged on the cover plate 2, since the cover plate 2, the ventilation member 1 and the housing 20 are separate parts, it is necessary to limit the diameter of the ventilation hole 3 to prevent the ventilation hole 3 from being too large, resulting in too low strength of the cover plate 2.

[0062] In some embodiments of the present utility model, as Figures 1 - 3As shown, the partition rib 13 is provided on the bottom wall 111 of the ventilation groove 11 and is connected to the bottom wall 111 of the ventilation groove 11. The end face of the partition rib 13 facing away from the bottom wall 111 of the ventilation groove 11 is spaced apart from the cover plate 2, and the partition rib 13 is connected to the inner peripheral wall 112 of the ventilation groove 11 (for example, in the present utility model, both sides in the width direction of the partition rib 13 are connected to the inner peripheral wall 112 of the ventilation groove 11). It should be noted that the bottom wall 111 of the ventilation groove 11 refers to the side wall of the ventilation groove 11 that is opposite to the cover plate 2 in the arrangement direction of the ventilation member 1 and the cover plate 2, and the inner peripheral wall 112 of the ventilation groove 11 refers to the wall surface provided around the bottom wall 111 of the ventilation groove 11).

[0063] It can be understood that the end face of the partition rib 13 facing away from the bottom wall 111 of the ventilation groove 11 is spaced apart from the cover plate 2, thereby realizing the communication between the first exhaust chamber 121 and the second exhaust chamber 122, and thus realizing the discharge of gas from the inner space of the housing 20 to the external environment. Among them, the end face of the partition rib 13 facing away from the bottom wall 111 of the ventilation groove 11 is spaced apart from the cover plate 2, and the formed channel has a simple structure and good economy.

[0064] Furthermore, as Figures 1 - 3 shown, the side of the cover plate 2 facing the ventilation groove 11 is a flat surface. Correspondingly, the side of the cover plate 2 facing away from the ventilation groove 11 is also a flat surface. Thus, the distance between the cover plate 2 and the partition rib 13 is ensured, so that the exhaust is smooth. At the same time, the side of the cover plate 2 facing the ventilation groove 11 is a flat surface, making the structure of the cover plate 2 simple and light in weight, which is beneficial to the economy and light weight of the speed reducer 10.

[0065] In some embodiments of the present utility model, as Figures 4 - 6 shown, the partition rib 13 is provided on the bottom wall 111 of the ventilation groove 11 and is connected to the bottom wall 111 of the ventilation groove 11. The end face of the partition rib 13 facing away from the bottom wall 111 of the ventilation groove 11 abuts against the cover plate 2, and the partition rib 13 is spaced apart from the inner peripheral wall 112 of the ventilation groove 11 (for example, in the present utility model, both sides in the width direction of the partition rib 13 are spaced apart from the inner peripheral wall 112 of the ventilation groove 11). It can be understood that after impurities enter the first exhaust chamber 121, they need to flow to both sides in the width direction of the partition rib 13 and enter the second exhaust chamber 122 through the gap between both sides in the width direction of the partition rib 13 and the inner peripheral wall 112 of the ventilation groove 11, increasing the movement track of the impurities in the exhaust passage 12, further preventing impurities from entering the inner space of the housing 20. At the same time, it can also further increase the flow path of the oil fluid in the exhaust passage 12, thereby further preventing oil fluid leakage and further improving the sealing performance.

[0066] In some embodiments of the present utility model, as Figures 4 - 6As shown in the figure, one side of the cover plate 2 facing the ventilation groove 11 has a protruding flow channel rib 22, and the flow channel rib 22 abuts against the end surface of the partition rib 13 facing away from the bottom wall 111 of the ventilation groove 11. For example, in the present utility model, the surface of the flow channel rib 22 facing the bottom wall 111 of the ventilation groove 11 abuts against the end surface of the partition rib 13 facing away from the bottom wall 111 of the ventilation groove 11. It can be understood that the setting of the flow channel rib 22, on the one hand, improves the structural strength of the cover plate 2, also improves the mode, avoids resonance, improves the NVH (Noise, Vibration, Harshness) performance of the reducer 10, and reduces noise. At the same time, the setting of the flow channel rib 22 can guide the orderly flow of gas and reduce the turbulent flow noise.

[0067] In some embodiments of the present utility model, as Figures 4 - 6 shown, the protruding height of the flow channel rib 22 is 0.5 - 1 mm, such as 0.5 mm, 0.8 mm, 0.9 mm or 1 mm, etc. Thus, the protruding height of the flow channel rib 22 is appropriate, avoiding the situation that the protruding height of the flow channel rib 22 is too large, which may cause interference with the partition rib 13, and also avoiding the situation that the protruding height of the flow channel rib 22 is too small, thereby ensuring the structural strength of the cover plate 2, also ensuring the mode of the cover plate 2 to avoid resonance, ensuring the NVH performance of the reducer 10, and reducing noise.

[0068] In some embodiments of the present utility model, as Figures 1 - 6 shown, the side of the cover plate 2 facing away from the ventilation member 1 has a clamping portion 21. It can be understood that the clamping portion 21 can be provided at the edge of the cover plate 2 or at the center of the cover plate 2 to adapt to different housings 20 of the reducer 10. The cover plate 2 and the clamping portion 21 are connected by welding or snap - fitting, etc. The setting of the clamping portion 21 facilitates the clamping of the cover plate 2, thereby facilitating the connection and disassembly operations between the cover plate 2 and the ventilation member 1.

[0069] In some embodiments of the present utility model, in the direction from the ventilation member 1 to the cover plate 2, the clamping portion 21 extends obliquely, and the projection of the clamping portion 21 on the cover plate 2 completely falls within the cover plate 2; it can be understood that the projection of the clamping portion 21 on the cover plate 2 can fall on the cover plate 2, thereby avoiding installation interference between the clamping portion 21 and the surrounding structure of the cover plate 2.

[0070] For example, when the clamping portion 21 is provided at the edge of the cover plate 2, in the direction from the ventilation member 1 to the cover plate 2, the clamping portion 21 inclines towards the center of the cover plate 2, so that the projection of the clamping portion 21 on the cover plate 2 completely falls within the cover plate 2. When the clamping portion 21 is provided at the center of the cover plate 2, in the direction from the ventilation member 1 to the cover plate 2, the clamping portion 21 inclines towards the edge of the cover plate 2, and the projection of the end of the clamping portion 21 away from the cover plate 2 on the cover plate 2 falls within the cover plate 2. Thus, it can also achieve that the projection of the clamping portion 21 on the cover plate 2 completely falls within the cover plate 2.

[0071] Further, the included angle between the clamping portion 21 and the end face of the cover plate 2 facing away from the air vent member 1 is α, where 60° ≤ α < 90°. For example, α can be 60°, 70°, 80°, or 89°, etc. Thus, it is convenient for the processing of the clamping portion 21 and the clamping of the clamping portion 21, improving the installation efficiency.

[0072] In some embodiments of the present invention, as Figures 1 - 6 shown, the clamping portion 21 is perpendicular to the end face of the cover plate 2 facing away from the air vent member 1. Thus, the processing of the clamping portion 21 is simple and fast.

[0073] Next, the speed reducer 10 according to the first specific embodiment of the present invention will be described. It should be understood that the following description is only exemplary and is intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0074] As Figures 1 - 3 shown, the speed reducer 10 according to the embodiment of the present invention includes an air vent member 1 and a cover plate 2.

[0075] Further, as Figures 1 - 3 shown, the air vent member 1 is disposed in the housing 20 of the speed reducer 10, and the air vent member 1 is connected to the housing 20; the cover plate 2 is detachably connected to the air vent member 1. The air vent member 1 has an air vent groove 11, and the cover plate 2 seals the notch of the air vent groove 11. The inner wall of the air vent groove 11 and the wall surface of the cover plate 2 facing the air vent groove 11 define an exhaust passage 12, and the exhaust passage 12 is communicated with the space inside the housing 20 and the external environment.

[0076] Further, as Figures 1 - 3 shown, the exhaust passage 12 includes a first exhaust chamber 121 and a second exhaust chamber 122 that are communicated with each other. The first exhaust chamber 121 is communicated with the external environment, and the second exhaust chamber 122 is communicated with the space inside the housing 20. A partition rib 13 is disposed in the air vent groove 11, and the first exhaust chamber 121 and the second exhaust chamber 122 are located on both sides of the partition rib 13 (for example, on both sides in the thickness direction of the partition rib 13).

[0077] Further, as Figures 1 - 3 shown, an air vent hole 3 is provided on the air vent member 1. The air vent hole 3 is disposed at one end of the air vent member 1 facing the cover plate 2. The second exhaust chamber 122 is communicated with the space inside the housing 20 through the air vent hole 3. The partition rib 13 is disposed on the bottom wall 111 of the air vent groove 11 and is connected to the bottom wall 111 of the air vent groove 11. The end face of the partition rib 13 facing away from the bottom wall 111 of the air vent groove 11 is spaced apart from the cover plate 2, and the partition rib 13 is connected to the inner peripheral wall 112 of the air vent groove 11.

[0078] Further, as Figures 1 - 3As shown, one side of the cover plate 2 facing away from the ventilation member 1 has a clamping portion 21, and the clamping portion 21 is perpendicular to the end surface of the cover plate 2 facing away from the ventilation member 1.

[0079] The structure of the speed reducer 10 in the first specific embodiment of the present utility model is simple, has good exhaust performance, and is beneficial to the light weight and economy of the speed reducer 10.

[0080] The speed reducer 10 according to the second specific embodiment of the present utility model will be described below. Among them, most of the structures of the speed reducer 10 in the second embodiment are the same as those of the speed reducer 10 in the first embodiment, and the same structures are denoted by the same reference numerals in the drawings. The difference between the speed reducer 10 in the second embodiment and the speed reducer 10 in the first embodiment is only that:

[0081] As Figures 4 - 6 As shown, the ventilation hole 3 is provided on the cover plate 2, the diameter of the ventilation hole 3 is 3 - 5 mm, the partition rib 13 is provided on the bottom wall 111 of the ventilation groove 11, the end surface of the partition rib 13 facing away from the bottom wall 111 of the ventilation groove 11 abuts against the cover plate 2, and the partition rib 13 is spaced apart from the inner peripheral wall 112 of the ventilation groove 11. The side of the cover plate 2 facing the ventilation groove 11 has a protruding flow channel rib 22, the surface of the flow channel rib 22 facing the bottom wall 111 of the ventilation groove 11 abuts against the end surface of the partition rib 13 facing away from the bottom wall 111 of the ventilation groove 11, and the protruding height of the flow channel rib 22 is 0.5 - 1 mm.

[0082] The speed reducer 10 in the second specific embodiment of the present utility model has good sealing performance, high structural strength, and good NVH performance.

[0083] The drive assembly according to the embodiment of the present utility model will be described below.

[0084] The drive assembly according to the embodiment of the present utility model includes the above-mentioned speed reducer 10. Among them, the drive assembly can be an electric drive assembly.

[0085] The drive assembly according to the embodiment of the present utility model, by providing the above-mentioned speed reducer 10, the ventilation member 1 is arranged in the housing 20 of the speed reducer 10, and the ventilation member 1 is connected to the housing 20; the cover plate 2 is detachably connected to the ventilation member 1, and an exhaust passage 12 is defined between the cover plate 2 and the ventilation member 1. The exhaust passage 12 is communicated with the space inside the housing 20 and the external environment. Since the exhaust passage 12 can be sealed through the cover plate 2, there is no need to seal the exhaust passage 12 by mating the front housing and the rear housing. Therefore, there is no need to provide the same ventilation member 1 in both the front housing and the rear housing to seal the exhaust passage 12. Only by providing the ventilation member 1 in the front housing or the rear housing can the exhaust passage 12 be sealed. Therefore, the setting of the ventilation member 1 is reduced, the space inside the housing 20 is optimized, and the internal space layout of the housing 20 is made more free.

[0086] The vehicle according to the embodiment of the present utility model will be described below.

[0087] A vehicle according to an embodiment of the present utility model includes the above-mentioned drive assembly.

[0088] For the vehicle according to the embodiment of the present utility model, by providing the above-mentioned drive assembly, a speed reducer 10 is provided, an air vent member 1 is arranged in a housing 20 of the speed reducer 10, and the air vent member 1 is connected to the housing 20; a cover plate 2 is detachably connected to the air vent member 1, and an exhaust passage 12 is defined between the cover plate 2 and the air vent member 1. The exhaust passage 12 communicates with the space inside the housing 20 and the external environment. Since the exhaust passage 12 can be sealed through the cover plate 2, there is no need to seal the exhaust passage 12 by mating a front housing and a rear housing. Therefore, there is no need to provide the same air vent member 1 in both the front housing and the rear housing to seal the exhaust passage 12. Only by providing the air vent member 1 in either the front housing or the rear housing can the exhaust passage 12 be sealed. Thus, the provision of the air vent member 1 is reduced, the space inside the housing 20 is optimized, and the internal space layout of the housing 20 becomes more flexible.

[0089] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do 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.

[0090] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A reducer, characterized in that: include: A housing, the housing comprising a front housing and a rear housing, the front housing and the rear housing being detachably connected; A ventilator, the ventilator is disposed in the shell and connected to the shell; A cover plate is detachably connected to the vent member, an exhaust passage is defined between the cover plate and the vent member, the exhaust passage is connected to the space in the shell and the external environment, and the cover plate and the vent member are both arranged in one of the front shell and the rear shell.

2. The reducer according to claim 1, characterized in that: The exhaust passage includes a first exhaust chamber and a second exhaust chamber that are connected to each other, the first exhaust chamber is connected to the external environment, and the second exhaust chamber is connected to the space in the shell.

3. The reducer according to claim 2, characterized in that: The ventilation piece has a ventilation groove, the cover plate blocks the notch of the ventilation groove, the inner wall of the ventilation groove and the wall of the cover plate facing the ventilation groove define the exhaust channel, and partition ribs are provided in the ventilation groove, and the first exhaust chamber and the second exhaust chamber are located on both sides of the partition ribs.

4. The reducer according to claim 3, characterized in that: At least one of the vent member and the cover plate has a vent hole, and the second exhaust chamber is communicated with the space in the shell through the vent hole.

5. The reducer according to claim 4, characterized in that: The vent hole is arranged on the vent member and at one end of the vent member facing the cover plate.

6. The reducer according to claim 4, characterized in that: The vent hole is arranged on the cover plate, and the diameter of the vent hole is 3-5 mm.

7. The reducer according to claim 3, characterized in that: The partition rib is arranged on the bottom wall of the ventilation groove and connected to the bottom wall of the ventilation groove. The end surface of the partition rib facing away from the bottom wall of the ventilation groove is separated from the cover plate. The partition rib is connected to the inner peripheral wall of the ventilation groove.

8. The reducer according to claim 3, characterized in that: The partition rib is arranged on the bottom wall of the ventilation groove and connected to the bottom wall of the ventilation groove. The end surface of the partition rib facing away from the bottom wall of the ventilation groove abuts against the cover plate. The partition rib is spaced apart from the inner peripheral wall of the ventilation groove.

9. The reducer according to claim 8, characterized in that: The cover plate has a protruding flow channel rib on one side facing the ventilation groove, and the flow channel rib abuts against the end surface of the partition rib facing away from the bottom wall of the ventilation groove.

10. The reducer according to claim 9, characterized in that: The protruding height of the flow channel rib is 0.5-1 mm.

11. The reducer according to claim 1, characterized in that: The side of the cover plate facing away from the venting piece has a clamping portion.

12. The reducer according to claim 11, characterized in that: In the direction from the ventilator to the cover plate, the clamping portion extends obliquely, and the projection of the clamping portion on the cover plate completely falls into the cover plate. Alternatively, the clamping portion is perpendicular to an end surface of the cover plate that faces away from the ventilator.

13. A drive assembly, characterized in that: Comprising a reducer according to any one of claims 1-12.

14. A vehicle, characterized in that: It comprises the drive assembly according to claim 13 or the reducer according to any one of claims 1-12.

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