Power assembly and vehicle

Abstract

The utility model provides a power assembly and a vehicle, the power assembly comprises a front main reduction unit, a speed change unit and a transmission shaft, the front main reduction unit is connected to the rear side of an engine; the speed change unit is connected to the rear side of the front main reduction unit; the transmission shaft is distributed on one side of the speed change unit in the left-right direction, one end of the transmission shaft is connected to the front main reduction unit, and the other end of the transmission shaft is connected to the speed change unit. The utility model provides a power assembly and a vehicle, and aims to solve the problems of low transmission efficiency and large occupied space in the vehicle caused by split arrangement of a front main reduction system and a transmission in the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmissions, and more specifically, relates to a power assembly and a vehicle. Background Art

[0002] The front-wheel drive transmission of traditional longitudinally mounted vehicles is usually separated from the front main reduction system and arranged in parallel along the left and right directions. A transmission shaft is arranged at the rear of the front main reduction system, and a transfer case is arranged at the rear of the front-wheel drive transmission. The transmission shaft is connected to the transfer case to realize the transmission of the front main reduction system and the front-wheel drive transmission. The front-wheel drive transmission and the front main reduction system jointly complete the power transmission. However, since the front-wheel drive transmission and the front main reduction system are set separately and the layout is scattered, not only does it cause large energy loss and low transmission efficiency during the transmission process, but it also occupies a large amount of space in the vehicle, which puts forward relatively strict space requirements for the overall vehicle layout and is not conducive to the compact design of the overall vehicle. In addition, this layout also leads to a spatial layout angle of the transmission shaft, which affects the NVH performance of the overall vehicle. Utility Model Content

[0003] The utility model aims to provide a power assembly and a vehicle, aiming to solve the problem in the prior art that the front main reduction system and the transmission are separately arranged, resulting in low transmission efficiency and occupying a large space in the vehicle.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] In a first aspect, a powertrain is provided, comprising:

[0006] The front main reduction unit is connected to the rear side of the engine;

[0007] A transmission unit connected to the rear side of the front main reduction unit; and

[0008] A transmission shaft is distributed on one side of the speed change unit along the left-right direction, one end of the transmission shaft is connected to the front main reduction unit, and the other end is connected to the speed change unit.

[0009] In combination with the first aspect, in a possible implementation, the power assembly further includes a closed cover arranged outside the front main reduction unit and the speed change unit, and the closed cover is provided with a first clearance hole and a second clearance hole for the transmission shaft to pass through.

[0010] In combination with the first aspect, in a possible implementation, the speed change unit includes an input shaft connected to the engine, the input shaft is arranged in a front-to-rear direction, the front main reduction unit is connected to a drive shaft, the input shaft is perpendicular to the drive shaft, and the input shaft is located above or below the drive shaft.

[0011] In combination with the first aspect, in a possible implementation manner, the sealing cover includes:

[0012] A first housing has a first accommodating cavity for accommodating the front main reduction unit, and the first clearance hole is opened in the first housing; and

[0013] The second housing is detachably connected to the first housing, the second housing has a second accommodating cavity for accommodating the speed change unit, the second clearance hole is opened in the second housing, and the first accommodating cavity is communicated with the second accommodating cavity.

[0014] In conjunction with the first aspect, in a possible implementation manner, the first housing includes:

[0015] A box body, having the first accommodating chamber, the first accommodating chamber having a first connecting opening and a transmission opening connected to the outside, the first connecting opening enables the first accommodating chamber to communicate with the second accommodating chamber; and

[0016] The guide seat is detachably connected to the box body, and the first clearance hole is opened in the guide seat. The first clearance hole corresponds to the transmission opening to form a clearance channel for the transmission shaft to pass through.

[0017] In combination with the first aspect, in a possible implementation manner, the box body is provided with a plurality of first mounting portions, and the guide seat includes:

[0018] A seat body, wherein the first clearance hole is formed in the seat body; and

[0019] The mounting ring is sleeved outside the seat body, and the mounting ring is provided with a plurality of second mounting parts along the circumferential direction. The first mounting parts are arranged corresponding to the second mounting parts one by one, and each of the first mounting parts is connected to one of the second mounting parts.

[0020] In combination with the first aspect, in a possible implementation, the guide seat further includes a plurality of reinforcing plates arranged on the outer peripheral surface of the seat body, ends of the reinforcing plates abut against the mounting ring, and each of the reinforcing plates is located between two adjacent second mounting portions.

[0021] In combination with the first aspect, in a possible implementation, the power assembly further includes a motor controller disposed outside the first housing.

[0022] In combination with the first aspect, in a possible implementation, the connecting end of the second shell has a connecting ring, the connecting ring has a plurality of first fixing holes circumferentially opened, the first shell has a second fixing hole adapted to the first fixing hole, and fixing parts are inserted into the first fixing hole and the second fixing hole.

[0023] The beneficial effect of the power assembly provided by the utility model is that compared with the prior art, the power assembly of the utility model changes the traditional speed change unit and the front main reduction unit from being arranged side by side in the left and right direction to being arranged front and rear, and the transmission shaft is arranged on one side of the speed change unit in the left and right direction, eliminating the setting of the transfer case, shortening the transmission distance in the front and rear direction, and making the overall structure more compact. The transmission shaft is directly connected to the speed change unit and the front main reduction unit, with high transmission efficiency, smooth transmission and reduced noise. Therefore, compared with the traditional longitudinal front-wheel drive transmission, it has the advantages of high power transmission efficiency, improved NVH performance, and compact design, which is conducive to the compact design of the space layout of the whole vehicle.

[0024] In a second aspect, an embodiment of the present invention further provides a vehicle, comprising any one of the powertrains described above.

[0025] The beneficial effect of the power system provided by the utility model is that: compared with the prior art, the power system of the utility model adopts the above-mentioned power system, and changes the traditional speed change unit and the front main reduction unit from being distributed side by side in the left and right direction to being distributed front and back, and the transmission shaft is arranged on one side of the speed change unit in the left and right direction, and the setting of the transfer case is cancelled, which shortens the transmission distance in the front and back direction, and the overall structure is more compact. The transmission shaft is directly connected to the speed change unit and the front main reduction unit, and the transmission efficiency is high, the transmission is smooth, and the noise is reduced. Therefore, compared with the traditional longitudinal front-wheel drive transmission, it has the advantages of high power transmission efficiency, improved NVH performance, and compact design, which is conducive to the compact design of the space layout of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of a power assembly provided by an embodiment of the utility model;

[0028] Figure 2 for Figure 1 A partial enlarged view of the middle A part;

[0029] Figure 3 Bit Figure 1 A partial enlarged view of part B in the middle.

[0030] In the figure: 1. front main reduction unit; 2. speed change unit; 3. transmission shaft; 4. motor controller; 5. first shell; 501. box body; 502. guide seat; 5021. seat body; 5022. mounting ring; 5023. reinforcement plate; 503. first clearance hole; 504. mounting piece; 6. second shell; 601. shell body; 6011. connecting ring; 602. end cover; 603. fixing piece. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] In the claims, specification and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, the terms "first", "second" or "third" are used to distinguish different objects, rather than to describe a specific order. The directional terms "upper" and "lower" in the claims, specification and drawings of the present utility model are the same as the up and down direction of the vehicle body, the terms "left" and "right" are the same as the left and right directions of the vehicle body, the terms "front" and "rear" are the same as the front and rear directions of the vehicle body, and the term "inside" refers to the side adjacent to the passenger compartment in the left and right directions of the vehicle body, and vice versa. "outside". Unless otherwise specified, other directional words, such as "vertical", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and 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 direction or be constructed and operated in a specific direction, so it cannot be understood as limiting the specific protection scope of the present utility model. In the claims, specification and the above drawings of the present utility model, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements. In the claims, specification and the above drawings of the present utility model, if the terms "including", "having" and their variations are used, it is intended to mean "including but not limited to".

[0033] It should be noted that the “front and rear direction” refers to the traveling direction of the vehicle.

[0034] Please also read Figures 1 to 3The power assembly and vehicle provided by the utility model are now described. The power assembly includes a front main reduction unit 1, a speed change unit 2 and a transmission shaft 3. The front main reduction unit 1 is connected to the rear side of the engine, and the speed change unit 2 is connected to the rear side of the front main reduction unit 1; the transmission shaft 3 is distributed on one side of the speed change unit 2 along the left-right direction, and one end of the transmission shaft 3 is connected to the front main reduction unit 1, and the other end is connected to the speed change unit 2.

[0035] Compared with the prior art, the powertrain provided by the utility model changes the traditional speed change unit 2 and the front main reduction unit 1 from being arranged side by side in the left-right direction to being arranged front-to-back, and the transmission shaft 3 is arranged on one side of the speed change unit 2 in the left-right direction, eliminating the setting of the transfer case, shortening the transmission distance in the front-to-back direction, and making the overall structure more compact. The transmission shaft 3 is directly connected to the speed change unit 2 and the front main reduction unit 1, with high transmission efficiency, smooth transmission and reduced noise. Therefore, compared with the traditional longitudinal front-wheel drive transmission, it has the advantages of high power transmission efficiency, improved NVH performance, and compact design, which is conducive to the compact design of the space layout of the whole vehicle.

[0036] Optionally, the power assembly further includes a cover body arranged outside the front main reduction unit 1 , the speed change unit 2 and the transmission shaft 3 .

[0037] Optionally, the front main reduction unit 1 includes a reduction assembly and a reduction housing 501 covered outside the reduction assembly. The speed change unit 2 includes a speed change assembly and a gearbox housing 501 covered outside the speed change assembly. The reduction housing 501 and the gearbox housing 501 are two independent components, which can not only ensure that the reduction assembly and the speed change assembly are in a clean environment, but also can be processed independently.

[0038] Optionally, the front-wheel drive transmission assembly also includes a motor controller 4 .

[0039] In some embodiments, see Figure 1 The power assembly further comprises a closed cover arranged outside the front main reduction unit 1 and the speed change unit 2, and the closed cover is provided with a first clearance hole 503 and a second clearance hole for the transmission shaft 3 to pass through.

[0040] In this embodiment, the front main reduction unit 1 and the speed change unit 2 are arranged in the closed cover, so as to ensure that the front main reduction unit 1 and the speed change unit 2 are not affected by dust, moisture and other impurities in the external environment. In addition, the closed cover does not need to cover the transmission shaft 3 therein, thus avoiding the problem of the closed cover being too large and occupying too much space in the vehicle, which is conducive to realizing the rational layout of the whole vehicle.

[0041] In some embodiments, see Figure 1 The speed change unit 2 includes an input shaft connected to the engine, the input shaft is arranged along the front-to-rear direction, the front main reduction unit 1 is connected to the drive shaft, the input shaft is perpendicular to the drive shaft, and the input shaft is located above or below the drive shaft.

[0042] The engine transmits power to the transmission unit 2 through the input shaft, and the transmission unit 2 transmits power to the driving wheels through the drive shaft.

[0043] In some embodiments, see Figure 1 The closed cover includes a first shell 5 and a second shell 6, the first shell 5 has a first accommodating chamber for accommodating the front main reduction unit 1, and a first clearance hole 503 is opened in the first shell 5; the second shell 6 is detachably connected to the first shell 5, the second shell 6 has a second accommodating chamber for accommodating the speed change unit 2, and a second clearance hole is opened in the second shell 6, and the first accommodating chamber and the second accommodating chamber are connected to each other in the front-to-back direction.

[0044] The two ends of the transmission shaft 3 are respectively inserted into the first clearance hole 503 and the second clearance hole to achieve connection with the front main reduction unit 1 and the reduction unit. The first accommodating cavity is connected to the second accommodating cavity, so that there is more space for arranging the components in the front main reduction unit 1 and the reduction unit.

[0045] As a specific embodiment of the first shell 5, the outer wall of the first shell 5 is provided with a first reinforcing rib along the front-to-back direction, and also has a second reinforcing rib arranged along the left-to-right direction, and the first reinforcing rib and the second reinforcing rib are arranged crosswise. This solution increases the strength of the first shell 5 without changing the thickness of the first shell 5.

[0046] In some embodiments, see Figure 1 to Figure 2 The first housing 5 includes a box body 501 and a guide seat 502. The box body 501 has a first accommodating chamber. The first accommodating chamber has a first connecting opening and a transmission opening connected to the outside. The first connecting opening connects the first accommodating chamber with the second accommodating chamber. The guide seat 502 is detachably connected to the box body 501, and a first clearance hole 503 is opened in the guide seat 502. The first clearance hole 503 corresponds to the transmission opening to form a clearance channel for the transmission shaft 3 to pass through.

[0047] The guide seat 502 is detachably connected to the box body 501. The front main reduction unit 1 can be installed in the first accommodating cavity first, and then the guide seat 502 is connected to the box body 501, which is more convenient for installation. In addition, the guide seat 502 and the box body 501 are separated, which is more convenient for processing. The guide seat 502 can also provide a guiding function for the transmission shaft 3.

[0048] Optionally, the guide seat 502 is screwed or clamped to the box body 501 .

[0049] In some embodiments, see Figure 1 to Figure 2The box body 501 is provided with a plurality of first mounting parts, the guide seat 502 includes a seat body 5021 and a mounting ring 5022, the first clearance hole 503 is opened in the seat body 5021; the mounting ring 5022 is sleeved outside the seat body 5021, and the mounting ring 5022 is provided with a plurality of second mounting parts along the circumferential direction, the first mounting parts are arranged one by one with the second mounting parts, and each first mounting part is connected to a second mounting part.

[0050] A mounting ring 5022 is arranged outside the seat body 5021 to increase the contact area with the box body 501 and improve the stability of the connection. A plurality of second mounting portions are distributed circumferentially on the mounting ring 5022 to increase the connection points with the box body 501 and make the connection between the guide seat 502 and the box body 501 more firmly.

[0051] Optionally, the seat body 5021 and the mounting ring 5022 are an integral structure, or a separate structure, and are then connected and fixed by welding.

[0052] Optionally, the box body 501 is provided with a connecting column, the mounting ring 5022 is provided with a connecting hole, the connecting column forms a first mounting portion, the connecting hole forms a second mounting portion, and the connecting column is inserted into the connecting hole. The connecting column can be screwed or clamped with the connecting hole. Of course, the connecting column can also be provided on the mounting ring 5022, and the connecting hole can be provided on the box body 501, and the guide seat 502 can be detachably connected to the box body 501 by plugging the connecting column into the connecting hole.

[0053] In some embodiments, see Figure 2 The guide seat 502 further includes a plurality of reinforcing pieces 5023 disposed on the outer circumference of the seat body 5021 , the ends of the reinforcing pieces 5023 abut against the mounting ring 5022 , and each reinforcing piece 5023 is located between two adjacent second mounting portions.

[0054] The reinforcing sheet 5023 can increase the strength of the seat body 5021, and at the same time improve the connection firmness between the seat body 5021 and the mounting ring 5022, and prevent the seat body 5021 and the mounting ring 5022 from relative displacement on the axis. Since the reinforcing sheet 5023 is arranged between two adjacent second mounting parts, the strength of the outer peripheral surface of the seat body 5021 can be made uniform, and the problem of fracture caused by local weak strength after being subjected to force can be avoided.

[0055] In some embodiments, see Figure 1 The power assembly also includes a motor controller 4 disposed outside the first housing 5 .

[0056] In this embodiment, the motor controller 4 is arranged outside the first housing 5 to realize the integration of the motor controller 4 and the front main reduction unit 1, thereby reducing the occupied space.

[0057] In some embodiments, see Figure 2The box body 501 is provided with a first mounting hole, the mounting ring 5022 is provided with a second mounting hole matched with the first mounting hole, the first mounting hole and the second mounting hole are inserted with mounting members 504, the first mounting hole forms a first mounting portion, and the second mounting hole forms a second mounting portion.

[0058] The first mounting holes and the second mounting holes correspond to each other one by one, and the mounting pieces 504 are inserted into the corresponding first mounting holes and second mounting holes to achieve a detachable connection between the guide seat 502 and the box body 501 .

[0059] Optionally, the mounting member 504 is a threaded member or a clip-on member.

[0060] Optionally, the box body 501 and the mounting ring 5022 are further provided with a positioning structure, which includes a positioning block provided on the box body 501 or the mounting ring 5022, and a positioning hole provided on the box body 501 or the mounting ring 5022, and the positioning block is inserted into the positioning hole. In this embodiment, the box body 501 and the mounting ring 5022 can be quickly positioned so that the first mounting hole corresponds to the second mounting hole, thereby improving the installation efficiency.

[0061] In some embodiments, see Figure 3 The connecting end of the second shell 6 has a connecting ring 6011, and the connecting ring 6011 has a plurality of first fixing holes opened along the circumferential direction. The first shell 5 has a second fixing hole matched with the first fixing hole, and fixing members 603 are inserted into the first fixing hole and the second fixing hole.

[0062] After the first housing 5 and the second housing 6 are butted, the fixing member 603 is inserted into the first fixing hole and the second fixing hole to realize the detachable connection between the first housing 5 and the second housing 6. The solution in this embodiment can not only quickly disassemble and assemble the first housing 5 and the second housing 6, which is convenient for repairing the front main reduction unit 1 and the speed change unit 2, but also facilitates processing and reduces the processing and manufacturing costs.

[0063] Optionally, the fixing member 603 is a threaded member or a clamping member.

[0064] Optionally, the second housing 6 includes a housing 601 and an end cover 602 connected to the side of the housing 601 away from the first housing 5, the housing 601 has a receiving channel that runs through in the front-to-back direction, one end of the receiving channel is connected to the first receiving cavity, and the end cover 602 is sealed at the other end of the receiving channel to form a second receiving cavity. In this embodiment, the housing 601 and the end cover 602 are separately arranged, which is more convenient for processing and convenient for the speed change unit 2 to enter the receiving channel, and then the end cover 602 is connected to the housing 601.

[0065] Based on the same inventive concept, the utility model also provides a vehicle, which includes the above-mentioned power system assembly.

[0066] The vehicle provided by the utility model adopts the above-mentioned power system, and changes the traditional transmission unit 2 and the front main reduction unit 1 from being arranged side by side in the left-right direction to being arranged front-to-back, and the transmission shaft 3 is arranged on one side of the transmission unit 2 in the left-right direction, and the setting of the transfer case is cancelled, which shortens the transmission distance in the front-to-back direction, and the overall structure is more compact. The transmission shaft 3 is directly connected to the transmission unit 2 and the front main reduction unit 1, and the transmission efficiency is high, the transmission is stable, and the noise is reduced. Therefore, compared with the traditional longitudinal front-wheel drive transmission, it has the advantages of high power transmission efficiency, improved NVH performance, and compact design, which is conducive to the compact design of the space layout of the whole vehicle.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A powertrain, characterized in that: include: A front main reduction unit (1) connected to the rear side of the engine; A speed change unit (2) connected to the rear side of the front main reduction unit (1); as well as A transmission shaft (3) is distributed on one side of the speed change unit (2) along the left-right direction; one end of the transmission shaft (3) is connected to the front main reduction unit (1), and the other end is connected to the speed change unit (2).

2. The powertrain according to claim 1, characterized in that: The power assembly also includes a closed cover arranged outside the front main reduction unit (1) and the speed change unit (2), and the closed cover is provided with a first clearance hole (503) and a second clearance hole for the transmission shaft (3) to pass through.

3. The powertrain according to claim 1, characterized in that: The speed change unit (2) comprises an input shaft connected to the engine, the input shaft is arranged in the front-rear direction, the front main reduction unit (1) is connected to a drive shaft, the input shaft is perpendicular to the drive shaft, and the input shaft is located above or below the drive shaft.

4. The powertrain according to claim 2, characterized in that: The closure comprises: A first housing (5) having a first accommodating cavity for accommodating the front main reduction unit (1), wherein the first clearance hole (503) is opened in the first housing (5); and The second housing (6) is detachably connected to the first housing (5), the second housing (6) having a second accommodating cavity for accommodating the speed change unit (2), the second clearance hole being opened in the second housing (6), and the first accommodating cavity being communicated with the second accommodating cavity.

5. The powertrain according to claim 4, characterized in that: The first housing (5) comprises: A box body (501) has the first accommodating chamber, the first accommodating chamber has a first connecting opening and a transmission opening connected to the outside, the first connecting opening enables the first accommodating chamber to communicate with the second accommodating chamber; and The guide seat (502) is detachably connected to the box body (501), and the first clearance hole (503) is opened in the guide seat (502). The first clearance hole (503) corresponds to the transmission opening to form a clearance channel for the transmission shaft (3) to pass through.

6. The powertrain according to claim 5, characterized in that: The box body (501) is provided with a plurality of first mounting parts, and the guide seat (502) comprises: A seat body (5021), wherein the first clearance hole (503) is opened in the seat body (5021); and The mounting ring (5022) is sleeved outside the seat body (5021), and the mounting ring (5022) is provided with a plurality of second mounting parts along the circumferential direction, the first mounting parts and the second mounting parts are arranged one by one, and each of the first mounting parts is connected to one of the second mounting parts.

7. The powertrain according to claim 6, characterized in that: The guide seat (502) further comprises a plurality of reinforcing plates (5023) arranged on the outer peripheral surface of the seat body (5021), the ends of the reinforcing plates (5023) abut against the mounting ring (5022), and each of the reinforcing plates (5023) is located between two adjacent second mounting portions.

8. The powertrain according to claim 4, characterized in that: The power assembly further comprises a motor controller (4) arranged outside the first housing (5).

9. The powertrain according to claim 4, characterized in that: The connecting end of the second shell (6) has a connecting ring (6011), and the connecting ring (6011) is provided with a plurality of first fixing holes along the circumferential direction. The first shell (5) is provided with a second fixing hole adapted to the first fixing hole, and fixing members (603) are inserted into the first fixing hole and the second fixing hole.

10. A vehicle, characterized in that A power assembly according to any one of claims 1 to 9.

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