Power assembly ventilation structure and vehicle

Abstract

The utility model provides a power assembly ventilation structure and a vehicle, the power assembly ventilation structure is used for communicating an air filter and a power assembly, a power assembly shell of the power assembly is provided with a communication port communicated with a transmission mechanism containing cavity, and the communication port is located at the top of the power assembly shell; the ventilation structure comprises a communicating pipe, one end of the communicating pipe communicates with the first air outlet of the air filter, and the other end of the communicating pipe communicates with the communicating opening. According to the ventilation structure of the power assembly, gas entering the power assembly is filtered by the air filter, so that external impurities such as dust and sand can be effectively prevented from entering the power assembly, the purity of lubricating oil in the power assembly can be guaranteed, the lubricating effect on a power transmission mechanism in the power assembly can be guaranteed, and the service life of the power assembly is prolonged. The service life of the power assembly is prolonged, oil can be effectively prevented from splashing into the communicating pipe, and the ventilation effect of the communicating pipe can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle power systems, and particularly relates to a ventilation structure for a power assembly. At the same time, the utility model also relates to a vehicle applying the ventilation structure for the power assembly. Background Art

[0002] A transmission, also known as a gearbox, is an important part of mechanical transmission, mainly used to change the speed and torque from the engine to adapt to the different requirements of the driving wheels for traction force and vehicle speed under different driving conditions such as starting, accelerating, driving, and overcoming various road obstacles of an automobile.

[0003] The power assembly mainly includes a power source and a transmission. The housings of the power source and the transmission are usually connected together, called the power assembly housing. Among them, the transmission includes a transmission housing and a power transmission mechanism provided in the transmission housing.

[0004] Most of the power transmission mechanisms use ordinary gear transmission, and some use planetary gear transmission. During the operation of the transmission, the power transmission mechanism rotates at a high speed, generating a lot of heat, which causes the temperature of the gas in the accommodation cavity of the transmission mechanism to rise and the pressure to increase. Therefore, generally, a ventilation pipe is provided on the transmission housing to prevent the pressure in the accommodation cavity of the transmission mechanism from being too high and affecting the normal operation of the power transmission mechanism.

[0005] However, the existing communication ports are generally communicated with the atmosphere, and pollutants in the air such as dust and other impurities are easy to enter the interior of the transmission from the communication port part. Especially when the vehicle is running under complex road conditions, water, mud, sand, etc. are easy to enter the interior of the transmission through the ventilation pipe of the transmission, which will contaminate the transmission oil and cause damage to the transmission, thus shortening the service life of the transmission. Summary of the Utility Model

[0006] In view of this, the utility model aims to provide a ventilation structure for a power assembly to prevent pollutants from entering the power assembly such as a transmission, thereby facilitating the service life of the power assembly.

[0007] To achieve the above object, the technical solution of the utility model is realized as follows:

[0008] A ventilation structure for a power assembly, the ventilation structure is used to connect an air filter and a power assembly, the power assembly includes a power assembly housing, and a transmission mechanism accommodation cavity is provided in the power assembly housing;

[0009] A communication port communicating with the transmission mechanism accommodation cavity is provided on the power assembly housing, and the communication port is located at the top of the power assembly housing;

[0010] The ventilation structure includes a connecting pipe, one end of the connecting pipe is communicated with the first air outlet of the air filter, and the other end of the connecting pipe is communicated at the connecting port.

[0011] Further, the connecting pipe includes a first pipe, an intermediate pipe and a second pipe connected in sequence. The first pipe is communicated with the first air outlet of the air filter, and the second pipe is communicated with the connecting port of the power assembly.

[0012] The intermediate pipe is a corrugated pipe.

[0013] Further, the first air outlet is located at the upper part of the filter housing of the air filter.

[0014] The first pipe is in an "L" shape and includes a first longitudinal pipe and a first transverse pipe connected together. The end of the first longitudinal pipe far from the first transverse pipe is communicated with the first air outlet, and the end of the first transverse pipe far from the first longitudinal pipe is communicated with the intermediate pipe.

[0015] Further, one end of the first pipe far from the intermediate pipe is communicated with the first air outlet through a first pipe joint.

[0016] Further, one end of the second pipe far from the intermediate pipe is communicated with the connecting port through a second pipe joint.

[0017] Further, the second pipe joint includes a first joint pipe, a connecting pipe and a second joint pipe connected in sequence. The first joint pipe is inserted and connected with the second pipe, and the second joint pipe is inserted into the connecting port.

[0018] A transverse plate and a longitudinal plate arranged orthogonally are provided on the outer wall of the connecting pipe, and one end of the transverse plate and the longitudinal plate are connected together; and / or, reinforcing ribs are provided on the outer wall of the connecting pipe.

[0019] Further, a plurality of convex rings are provided on the outer wall of the first joint pipe, and the plurality of convex rings are arranged at intervals along the insertion direction of the first joint pipe and the second pipe; and / or,

[0020] A retaining ring is provided at the end of the second joint pipe, and the retaining ring extends radially outward along the second joint pipe. When the second joint pipe is inserted into the connecting port, the retaining ring is used to prevent the second joint pipe from coming out of the connecting port, and a plurality of notches are provided at one end of the pipe wall of the second joint pipe far from the connecting pipe, and the plurality of notches are distributed at intervals around the circumference of the second joint pipe.

[0021] Further, the powertrain housing includes a flywheel housing, a motor housing, and a transmission housing connected in sequence. The flywheel housing is used to accommodate the flywheel in the powertrain, the motor housing is used to accommodate the motor in the powertrain, and a transmission mechanism accommodating cavity is provided in the transmission housing. The transmission mechanism accommodating cavity is used to accommodate the power transmission mechanism of the transmission in the powertrain;

[0022] The communication port is located at the top of the motor housing.

[0023] Further, the air filter includes a filter housing, and a first filter part and a second filter part provided in the filter housing;

[0024] An air inlet, the first air outlet, and the second air outlet are provided on the filter housing. Along the direction from the air inlet to the second air outlet, the first filter part and the second filter part are arranged in sequence, and a gap is provided between the first filter part and the second filter part. The first air outlet is communicated with the gap.

[0025] Compared with the prior art, the present utility model has the following advantages:

[0026] The ventilation structure of the powertrain of the present utility model connects the first air outlet of the air filter and the communication port of the powertrain through a communication pipe, so that the gas entering the powertrain is the gas filtered by the air filter, which can effectively prevent external impurities such as dust and sand from entering the interior of the powertrain, is beneficial to ensuring the purity of the lubricating oil in the powertrain, can ensure the lubrication effect on the power transmission mechanism in the powertrain, and prolong the service life of the powertrain. At the same time, the communication port is located at the top of the powertrain housing, which can effectively prevent oil from splashing into the communication pipe, is beneficial to ensuring the ventilation effect of the communication pipe. The high-pressure gas in the powertrain can be relieved through the communication pipe, and it can also ensure that when the vehicle passes through a road condition lower than the maximum allowable wading height, water will not enter the powertrain through the ventilation pipe.

[0027] In addition, the communication pipe includes a first pipe, an intermediate pipe, and a second pipe, and the intermediate pipe adopts a corrugated pipe, so that the communication pipe can be applicable to a variety of vehicle models and has a wide range of applications. The first pipe includes a first longitudinal pipe and a first transverse pipe, which are convenient for communicating with the first air outlet and the intermediate pipe respectively and are convenient for being arranged on the vehicle. The first pipe is communicated with the first air outlet through a first pipe joint, the second pipe is communicated with the communication port through a second pipe joint, and both the first pipe joint and the second pipe joint can adopt existing standard parts, with low cost and convenient connection.

[0028] In addition, the second pipe joint includes a first joint pipe, a connecting pipe, and a second joint pipe that are connected in sequence, facilitating connection to the second pipe and the communication port respectively. A transverse plate and a longitudinal plate are provided on the outer wall of the connecting pipe, which can improve the structural strength of the connecting pipe. When the second pipe joint is connected to the communication port, the transverse plate can abut against the upper surface of the powertrain housing, which is beneficial to improving the reliability of the insertion of the second pipe joint at the communication port.

[0029] As for the provided convex ring, it is to improve the reliability of the insertion connection between the first joint pipe and the second pipe. And the provided retaining ring is beneficial to improving the reliability of the insertion connection between the second joint pipe and the communication port. The provided notch enables the diameter of the second joint pipe to become smaller when the second joint pipe is inserted into the communication port, which is beneficial to the smooth insertion of the second joint pipe into the communication port.

[0030] The powertrain housing includes a flywheel housing, a motor housing, and a transmission housing, and the communication hole is provided at the top of the motor housing, which has a good ventilation effect and the oil is not easily splashed into the communication pipe, and is applicable to the architecture where the transmission and the motor are integrated.

[0031] Furthermore, the air filter includes a first filtering part and a second filtering part, and the first air outlet is communicated with the gap between the first filtering part and the second filtering part, so that the gas entering the powertrain is the gas filtered by the first filtering part. The gas filtered by the second filtering part can enter the intake port of the engine through the second air outlet via a pipeline. Even if the connection parts of the communication pipe are disconnected, it has little impact on the gas entering the engine, which is beneficial to ensuring the safe and reliable operation of the engine.

[0032] Another object of the present invention is to provide a vehicle, and the transmission of the vehicle is ventilated through the powertrain ventilation structure as described above.

[0033] For the vehicle of the present invention, the transmission of the vehicle is ventilated through the powertrain ventilation structure as above, which can effectively prevent external impurities such as dust and sand from entering the interior of the transmission, is beneficial to ensuring the purity of the lubricating oil in the transmission, can ensure the lubrication effect on the power transmission mechanism in the transmission, and extend the service life of the transmission. At the same time, it can also effectively prevent the oil from splashing into the communication pipe, which is beneficial to ensuring the ventilation effect of the communication pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings that form a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0035] Figure 1 is a schematic structural diagram of the powertrain ventilation structure according to Embodiment 1 of the present invention in an applied state;

[0036] Figure 2 Schematic structural diagram of the communicating pipe according to the first embodiment of the present utility model;

[0037] Figure 3 Another schematic structural diagram of the communicating pipe according to the first embodiment of the present utility model;

[0038] Figure 4 Schematic structural diagram of the communication port according to the first embodiment of the present utility model;

[0039] Figure 5 Schematic structural diagram of the second pipe joint according to the first embodiment of the present utility model;

[0040] Figure 6 is Figure 5 Schematic structural diagram from another perspective;

[0041] Figure 7 Schematic structural diagram of the air filter according to the first embodiment of the present utility model.

[0042] Explanation of reference numerals:

[0043] 1. Power assembly housing; 2. Communicating pipe; 3. Air filter; 4. First pipe joint; 5. Second pipe joint;

[0044] 101. Flywheel housing; 102. Motor housing; 103. Transmission housing;

[0045] 1021. Communication port;

[0046] 201. First pipe; 202. Intermediate pipe; 203. Second pipe;

[0047] 2011. First longitudinal pipe; 2012. First transverse pipe;

[0048] 301. Filter housing; 302. First filter part; 303. Second filter part; 304. Gap;

[0049] 3011. Air inlet; 3012. First air outlet; 3013. Second air outlet;

[0050] 501. First joint pipe; 502. Connecting pipe; 503. Second joint pipe;

[0051] 5011. Convex ring;

[0052] 5021. Horizontal plate; 5022. Vertical plate; 5023. Reinforcing rib;

[0053] 5031. Retaining ring; 5032. Notch. Detailed implementation manners

[0054] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0055] In the description of the present utility model, it should be noted that based on the orientation or positional relationship shown in the drawings, it is 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 to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0056] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" 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 elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0057] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0058] Embodiment 1

[0059] This embodiment relates to a ventilation structure for a powertrain, which can preferably prevent pollutants from entering the powertrain such as a transmission, and is beneficial to extending the service life of the powertrain.

[0060] Based on the above design concept, an exemplary structure of the ventilation structure for the powertrain in this embodiment is as Figure 1 shown. In terms of the overall structure, the ventilation structure for the powertrain in this embodiment is used to connect the air cleaner 3 and the powertrain.

[0061] Among them, hereinafter, taking the powertrain including a transmission as an example for illustration, the transmission includes a transmission housing 103 and a power transmission mechanism provided in the transmission housing 103. A transmission mechanism accommodating cavity is provided in the powertrain housing 1 of the powertrain.

[0062] Specifically, the powertrain includes a powertrain housing 1, the powertrain housing 1 includes a transmission housing 103, a transmission mechanism accommodating cavity is provided in the transmission housing 103, and the transmission mechanism accommodating cavity is used to accommodate the power transmission mechanism of the transmission. A communication port 1021 communicating with the transmission mechanism accommodating cavity is provided on the powertrain housing 1, and the communication port 1021 is specifically located at the top of the powertrain housing 1.

[0063] The ventilation structure in this embodiment mainly includes a connecting pipe 2. One end of the connecting pipe 2 is connected to the first air outlet 3012 of the air filter 3, and the other end of the connecting pipe 2 is connected to the connecting port 1021. Among them, the gas flowing out of the first air outlet 3012 is the gas after the air is filtered at the first stage by the air filter 3. With the above structure, the gas filtered by the air filter 3 can enter the powertrain through the connecting pipe 2, which can better prevent pollutants from entering the powertrain and is beneficial to extending the service life of the powertrain.

[0064] As Figure 1 shown in combination with Figure 2 For the convenience of connecting with the air filter 3 and the powertrain, the connecting pipe 2 includes a first pipe 201, an intermediate pipe 202, and a second pipe 203 that are connected in sequence. The first pipe 201 is connected to the first air outlet 3012 of the air filter 3, and the second pipe 203 is connected to the connecting port 1021 of the powertrain.

[0065] In a preferred embodiment, the first pipe 201 and the second pipe 203 can be made of existing plastic materials. As Figure 3 shown, the intermediate pipe 202 is a corrugated pipe. The connection between the intermediate pipe 202 and the first pipe 201 can be achieved through an existing clamp, and the connection between the intermediate pipe 202 and the second pipe 203 can also use a clamp. It should be understood that in addition to using a clamp for the connection structure here, other existing connection methods between pipe bodies can also be used.

[0066] It should be noted that in the above structure, the connecting pipe 2 includes the first pipe 201, the intermediate pipe 202, and the second pipe 203, and the intermediate pipe 202 is a corrugated pipe, so that the connecting pipe 2 can be applicable to a variety of vehicle models and has a wide range of applications.

[0067] In addition, it is also possible that the first pipe 201, the intermediate pipe 202, and the second pipe 203 are connected as a whole. When the connecting pipe 2 is arranged on the vehicle body, the connecting pipe 2 can be fixed to the nearby vehicle body parts through an existing pipe fixing structure. Along the extending direction of the connecting pipe 2, the pipe fixing structures can be multiple arranged at intervals, which can stably fix the connecting pipe 2 and ensure the neatness of the parts on the vehicle body.

[0068] As Figure 1 and Figure 7 shown, the first air outlet 3012 is located at the upper part of the filter housing 301 of the air filter 3. In a preferred embodiment, the first pipe 201 is in an "L" shape and includes a first longitudinal pipe 2011 and a first transverse pipe 2012 that are connected together. The first longitudinal pipe 2011 is arranged vertically along the height direction of the vehicle. One end of the first longitudinal pipe 2011 away from the first transverse pipe 2012 is connected to the first air outlet 3012, and one end of the first transverse pipe 2012 away from the first longitudinal pipe 2011 is connected to the intermediate pipe 202.

[0069] Here, the first pipe 201 includes a first longitudinal pipe 2011 and a first transverse pipe 2012, which facilitates connection to the first air outlet 3012 and the intermediate pipe 202 respectively, and is convenient to be arranged on the vehicle.

[0070] For convenient connection, as a preferred embodiment, one end of the first pipe 201 away from the intermediate pipe 202 is connected to the first air outlet 3012 through a first pipe joint 4, and one end of the second pipe 203 away from the intermediate pipe 202 is connected to the communication port 1021 through a second pipe joint 5. It should be understood that it is also possible to directly connect the first pipe 201 and the first air outlet 3012, and it is also possible to directly connect the second pipe 203 and the communication port 1021.

[0071] In the above structure, the first pipe 201 is connected to the first air outlet 3012 through the first pipe joint 4, and the second pipe 203 is connected to the communication port 1021 through the second pipe joint 5. Both the first pipe joint 4 and the second pipe joint 5 can adopt existing standard parts, with low cost and convenient connection.

[0072] In terms of the specific structure, referring to Figure 5 and Figure 6 As shown, the second pipe joint 5 includes a first joint pipe 501, a connecting pipe 502, and a second joint pipe 503 that are connected in sequence. The first joint pipe 501 is inserted and connected to the second pipe 203, and the second joint pipe 503 is inserted into the communication port 1021. Here, the second pipe joint 5 includes a first joint pipe 501, a connecting pipe 502, and a second joint pipe 503 that are connected in sequence, which facilitates connection to the second pipe 203 and the communication port 1021 respectively.

[0073] In a preferred embodiment, transverse plates 5021 and longitudinal plates 5022 are arranged orthogonally on the outer wall of the connecting pipe 502. One end of the transverse plate 5021 and the longitudinal plate 5022 are connected together, and the angle between the transverse plate 5021 and the axis of the connecting pipe 502 is an acute angle, and the angle between the longitudinal plate 5022 and the axis of the connecting pipe 502 is also an acute angle. By providing the transverse plates 5021 and the longitudinal plates 5022 on the outer wall of the connecting pipe 502, the structural strength of the connecting pipe 502 can be improved. When the second pipe joint 5 is connected to the communication port 1021, the transverse plate 5021 can abut against the upper surface of the powertrain housing 1, specifically referring to the shell wall part where the communication port 1021 is formed, which is beneficial to improving the reliability of the insertion of the second pipe joint 5 at the communication port 1021.

[0074] Continuing to refer to Figure 5 and Figure 6As shown, as a preferred embodiment, reinforcing ribs 5023 are provided on the outer wall of the connecting pipe 502. In this embodiment, the reinforcing ribs 5023 include a first reinforcing rib 5023 and a second reinforcing rib 5023. The first reinforcing rib 5023 extends along the axial direction of the connecting pipe 502, and the second reinforcing rib 5023 extends around the circumferential direction of the connecting pipe 502. The first reinforcing rib 5023 and the second reinforcing rib 5023 are cross-connected, which can preferably improve the structural strength of the connecting pipe 502.

[0075] It should be understood that the shapes of the first reinforcing rib 5023 and the second reinforcing rib 5023 are not limited to the above description and Figure 6 the structure shown in the figure. Their shapes, numbers, and arrangement manners can be adjusted according to actual needs as long as they can preferably improve the structural strength of the connecting pipe 502.

[0076] In a preferred embodiment, a plurality of convex rings 5011 are provided on the outer wall of the first joint pipe 501. The plurality of convex rings 5011 are arranged at intervals along the insertion direction of the first joint pipe 501 into the second pipe 203. In this embodiment, there are three convex rings 5011, and each convex ring 5011 is frustum-shaped. The large-diameter ends of the convex rings 5011 are arranged close to the connecting pipe 502, and the small-diameter ends of the convex rings 5011 are arranged close to the connecting pipe 502. With such a setting, it is convenient for the first joint pipe 501 to be inserted into the second pipe 203, and it is beneficial to improve the reliability of the insertion connection between the first joint pipe 501 and the second pipe 203.

[0077] It should be understood that the number of the convex rings 5011 is not limited to three. For example, it can be one, two, four, etc., and the shape of the convex ring 5011 is not limited to frustum-shaped. For example, it is also feasible that the cross-section of the convex ring 5011 is semi-circular.

[0078] Still referring to Figure 5 and Figure 6 As shown, a retaining ring 5031 is provided at the end of the second joint pipe 503. The retaining ring 5031 extends radially outward along the second joint pipe 503. When the second joint pipe 503 is inserted into the communication port 1021, the retaining ring 5031 is used to prevent the second joint pipe 503 from disengaging from the communication port 1021, and a plurality of notches 5032 are provided at one end of the wall of the second joint pipe 503 away from the connecting pipe 502. The plurality of notches 5032 are circumferentially spaced apart around the second joint pipe 503.

[0079] Specifically, when the second joint pipe 503 is inserted into the communication port 1021, the edge of the communication port 1021 can be blocked outside the retaining ring 5031, which has a good effect of preventing the second joint pipe 503 from disengaging from the communication port 1021.

[0080] In the above structure, the arranged retaining ring 5031 is conducive to improving the reliability of the insertion connection between the second joint pipe 503 and the communication port 1021. The arranged notch 5032 enables the diameter of the second joint pipe 503 to become smaller when the second joint pipe 503 is inserted into the communication port 1021, facilitating the smooth insertion of the second joint pipe 503 into the communication port 1021. After the second joint pipe 503 is inserted in place, the pipe wall of the second joint pipe 503 resets, causing the edge of the communication port 1021 to be blocked outside the retaining ring 5031.

[0081] More specifically, in this embodiment, the number of notches 5032 is four. It should be understood that other numerical values for the number of notches 5032 are also feasible, such as three, five, etc.

[0082] Still referring to Figure 1 As shown, in this embodiment, the powertrain housing 1 includes a flywheel housing 101, a motor housing 102, and a transmission housing 103 that are connected in sequence. Among them, the flywheel housing 101 is used to accommodate the flywheel in the powertrain, the motor housing 102 is used to accommodate the motor in the powertrain, and a transmission mechanism accommodating cavity is provided in the transmission housing 103 for accommodating the power transmission mechanism of the transmission in the powertrain. The communication port 1021 in this embodiment is specifically located at the top of the motor housing 102.

[0083] Here, making the powertrain housing 1 include the flywheel housing 101, the motor housing 102, and the transmission housing 103, and arranging the communication hole at the top of the motor housing 102 has a good ventilation effect, and oil is not easily splashed into the communication pipe 2, which is applicable to the architecture where the transmission and the motor are integrated.

[0084] It should be noted that the powertrain housing 1 in this embodiment is the housing applicable to the integrated structure of the transmission and the motor. Since the spaces in the flywheel housing 101, the motor housing 102, and the transmission housing 103 are connected, and the top position of the motor housing 102 is the highest, therefore, arranging the communication port 1021 on the motor housing 102 in this embodiment is conducive to ventilating the power transmission mechanism in the transmission. In the actual powertrain housing 1, preferably, the communication port 1021 is arranged at the highest point of the powertrain housing 1.

[0085] Referring to Figure 1 And in combination with Figure 7As shown, the air filter 3 of this embodiment mainly includes a filter housing 301, and a first filter part 302 and a second filter part 303 disposed within the filter housing 301. Among them, the filter housing 301 is provided with an air inlet 3011, a first air outlet 3012, and a second air outlet 3013. Along the direction from the air inlet 3011 to the second air outlet 3013, the first filter part 302 and the second filter part 303 are arranged in sequence, and there is a gap 304 between the first filter part 302 and the second filter part 303. The first air outlet 3012 communicates with the gap 304.

[0086] In the above structure, the air filter 3 includes the first filter part 302 and the second filter part 303, and the first air outlet 3012 communicates with the gap 304 between the first filter part 302 and the second filter part 303, so that the gas entering the powertrain is the gas filtered by the first filter part 302. The gas filtered by the second filter part 303 can enter the air inlet 3011 of the engine through the second air outlet 3013 via a pipeline. Even if the connection parts of the connecting pipe 2 are disconnected, it has little impact on the gas entering the engine, which is beneficial to ensuring the safe and reliable operation of the engine.

[0087] It should be noted that Figure 7 The structure shown is only an exemplary structure. When the first filter part 302 and the second filter part 303 are specifically arranged, they can be arranged in sequence on the path where the air inlet 3011 communicates with the air outlet. And the connection position of the first air outlet 3012 is behind the first filter part 302 and in front of the second filter part 303, that is, preferably, the gas entering the powertrain is the gas filtered by the first filter part 302 at the first stage. In addition, when there is only one filter part in the filter housing 301, the first air outlet 3012 on the filter housing 301 is the air outlet communicating with the air inlet 3011 of the engine.

[0088] The powertrain ventilation structure of this embodiment connects the first air outlet 3012 of the air filter 3 and the connection port 1021 of the powertrain through the connecting pipe 2, so that the gas entering the powertrain is the gas filtered by the air filter 3, which can effectively prevent external impurities such as dust and sand from entering the interior of the powertrain, is beneficial to ensuring the purity of the lubricating oil in the powertrain, can ensure the lubrication effect on the power transmission mechanism in the powertrain, and extend the service life of the powertrain. At the same time, the connection port 1021 is located at the top of the powertrain housing 1, which can also effectively prevent oil from splashing into the connecting pipe 2, is beneficial to ensuring the ventilation effect of the connecting pipe 2, and can also ensure that when the vehicle passes through a road condition with a water depth lower than the maximum allowable wading height, water will not enter the powertrain through the ventilation pipe.

[0089] Embodiment Two

[0090] This embodiment relates to a vehicle, and the transmission of the vehicle is ventilated through the powertrain ventilation structure as in Embodiment 1.

[0091] For the vehicle of this embodiment, the transmission of the vehicle is ventilated through the above powertrain ventilation structure, which can effectively prevent external impurities such as dust and sand from entering the interior of the transmission, is conducive to ensuring the purity of the lubricating oil in the transmission, can ensure the lubrication effect on the power transmission mechanism in the transmission, and extend the service life of the transmission. At the same time, it can also effectively prevent the oil from splashing into the connecting pipe 2, which is conducive to ensuring the ventilation effect of the connecting pipe 2.

[0092] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A powertrain ventilation structure, characterized in that: The ventilation structure is used to connect the air filter (3) and the power assembly, wherein the power assembly comprises a power assembly housing (1), and a transmission mechanism accommodating chamber is provided in the power assembly housing (1); The power assembly housing (1) is provided with a communication port (1021) that is in communication with the transmission mechanism accommodating chamber, and the communication port (1021) is located at the top of the power assembly housing (1); The ventilation structure comprises a connecting pipe (2), one end of the connecting pipe (2) is connected to a first air outlet (3012) of an air filter (3), and the other end of the connecting pipe (2) is connected to the connecting port (1021).

2. The powertrain ventilation structure according to claim 1, characterized in that: The connecting pipe (2) comprises a first pipe (201), an intermediate pipe (202) and a second pipe (203) which are connected in sequence, the first pipe (201) being connected to a first air outlet (3012) of the air filter (3), and the second pipe (203) being connected to a connecting port (1021) of the power assembly; The intermediate tube (202) is a corrugated tube.

3. The powertrain ventilation structure according to claim 2, characterized in that: The first air outlet (3012) is located at the upper part of the filter housing (301) of the air filter (3); The first tube (201) is in an "L" shape and comprises a first longitudinal tube (2011) and a first transverse tube (2012) connected together; an end of the first longitudinal tube (2011) away from the first transverse tube (2012) is connected to the first air outlet (3012); and an end of the first transverse tube (2012) away from the first longitudinal tube (2011) is connected to the intermediate tube (202).

4. The powertrain ventilation structure according to claim 2, characterized in that: One end of the first tube (201) away from the middle tube (202) is connected to the first air outlet (3012) via a first tube joint (4).

5. The powertrain ventilation structure according to claim 2, characterized in that: One end of the second tube (203) away from the intermediate tube (202) is connected to the communication port (1021) via a second tube joint (5).

6. The powertrain ventilation structure according to claim 5, characterized in that: The second pipe joint (5) comprises a first joint pipe (501), a connecting pipe (502) and a second joint pipe (503) which are connected in sequence, the first joint pipe (501) and the second pipe (203) are plugged and connected, and the second joint pipe (503) is inserted into the communication port (1021); The outer wall of the connecting tube (502) is provided with a transverse plate (5021) and a longitudinal plate (5022) arranged orthogonally, and one end of the transverse plate (5021) and the longitudinal plate (5022) are connected together; and / or, a reinforcing rib (5023) is provided on the outer wall of the connecting tube (502).

7. The powertrain ventilation structure according to claim 6, characterized in that: A plurality of convex rings (5011) are provided on the outer wall of the first joint pipe (501), and the plurality of convex rings (5011) are arranged at intervals along the plugging direction of the first joint pipe (501) and the second pipe (203); and / or, A retaining ring (5031) is provided at the end of the second joint pipe (503), and the retaining ring (5031) extends outwardly along the radial direction of the second joint pipe (503). When the second joint pipe (503) is inserted into the connecting port (1021), the retaining ring (5031) is used to prevent the second joint pipe (503) from escaping from the connecting port (1021). In addition, a plurality of notches (5032) are provided on the wall of the second joint pipe (503) at one end away from the connecting pipe (502), and the plurality of notches (5032) are distributed at intervals around the circumference of the second joint pipe (503).

8. The powertrain ventilation structure according to claim 1, characterized in that: The power assembly housing (1) comprises a flywheel housing (101), a motor housing (102) and a transmission housing (103) which are connected in sequence, the flywheel housing (101) being used to accommodate a flywheel in the power assembly, the motor housing (102) being used to accommodate a motor in the power assembly, and the transmission housing (103) being provided with a transmission mechanism accommodating chamber, the transmission mechanism accommodating chamber being used to accommodate a power transmission mechanism of a transmission in the power assembly; The communication port (1021) is located at the top of the motor housing (102).

9. The powertrain ventilation structure according to any one of claims 1 to 8, characterized in that: The air filter (3) comprises a filter housing (301), and a first filter portion (302) and a second filter portion (303) arranged in the filter housing (301); The filter housing (301) is provided with an air inlet (3011), the first air outlet (3012) and the second air outlet (3013); along the direction from the air inlet (3011) to the second air outlet (3013), the first filter portion (302) and the second filter portion (303) are arranged in sequence, and a gap (304) is provided between the first filter portion (302) and the second filter portion (303); the first air outlet (3012) is connected to the gap (304).

10. A vehicle, characterized in that: The transmission of the vehicle is ventilated through the powertrain ventilation structure according to any one of claims 1-9.

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