CN212155732U

CN212155732U - Vehicle transmission and vehicle comprising same

Info

Publication number: CN212155732U
Application number: CN202020265752.1U
Authority: CN
Inventors: 李佳奕; 张旭晨; 郁李巍; 蒋彦; 鲍爱建
Original assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Current assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-12-15
Anticipated expiration: 2030-03-06

Abstract

The utility model discloses a gearbox for vehicle, it includes: a first gear; a second gear for kneading rotation in synchronization with the first gear; and a partition plate that partitions the first gear from the second gear to prevent the lubricating oil of the second gear in a region close to the first gear from being thrown away by the first gear. The utility model discloses still relate to the vehicle that uses this gearbox.

Description

Vehicle transmission and vehicle comprising same

Technical Field

The utility model relates to a gearbox reaches vehicle including this gearbox that is used for vehicle to have novel lubrication scheme.

Background

Energy conservation and emission reduction become one of the main targets of the automobile industry at the present stage, and various new energy automobiles enter the visual field of people in succession. In order to respond to the national call of sustainable development, a great amount of manpower and material resources are put into each vehicle enterprise to develop the new energy automobile, and with the promotion of national policies, the vehicles are mixed in the future or become the mainstream of the new energy automobile.

Hybrid refers to the drive system of a vehicle. While conventional drive systems include an engine and a transmission, hybrid vehicles also incorporate a drive motor. The driving motor has the function of recovering the torque overflowing from the engine and can be used as a driving source to output the torque when the energy storage is finished. The hybrid drive system has little influence on the traditional engine, generally integrates the drive motor and the gearbox together, and has the advantages that the rotating speed acceleration performance of the drive motor is very outstanding, and the corresponding lubricating requirement on the gear is also improved, so that the lubricating requirement in the integrated gearbox of the hybrid drive system is far higher than that of the common manual gearbox.

SUMMERY OF THE UTILITY MODEL

In view of the above, embodiments of the present invention provide a transmission for a vehicle and a vehicle including the same, so as to effectively solve or alleviate at least one of the problems existing at present.

An aspect of the embodiments of the present invention relates to a transmission, which includes:

a first gear;

a second gear for kneading rotation in synchronization with the first gear; and

a partition plate that partitions the first gear from the second gear to prevent the lubricating oil of the second gear in a region close to the first gear from being thrown away by the first gear.

In the transmission according to the embodiment of the present invention, optionally, the first gear is a main reduction gear for reducing the output rotation speed of the engine, and the second gear is a mechanical gear for reducing the output rotation speed of the main reduction gear.

In the transmission according to the embodiment of the present invention, optionally, the transmission further includes a front bearing plate for supporting the front bearing of the mechanical gear, the front bearing plate includes a first partition plate fixing portion for fixing the first portion of the partition plate.

In the transmission according to an embodiment of the present invention, optionally, the first partition fixing part includes a fixing hole for receiving a fastener for fixing the partition to the front bearing plate.

In the transmission according to an embodiment of the present invention, optionally, the transmission further includes a motor bracket for supporting the motor, and the motor bracket includes a second partition plate fixing portion for fixing the second portion of the partition plate.

In the transmission according to an embodiment of the present invention, optionally, the second partition fixing part includes a fixing hole for receiving a fastener for fixing the partition to the motor bracket.

In the transmission according to an embodiment of the present invention, optionally, the partition plate includes a lubricating structure for lubricating the second gear with lubricating oil from the first gear.

In the transmission according to an embodiment of the present invention, optionally, the lubricating structure includes an oil guiding region for collecting the lubricating oil from the first gear and guiding the lubricating oil to the oil collecting region, and the oil collecting region covers at least a portion of the second gear.

In the transmission according to the embodiment of the present invention, optionally, the partition plate includes a first fixing portion and a second fixing portion, the first fixing portion is fixed to a front bearing plate for supporting a front bearing of the first gear, and the second fixing portion is fixed to a motor bracket for supporting a motor.

In the transmission according to an embodiment of the present invention, optionally, the second gear has a smaller pitch circle diameter than the first gear.

Another aspect of embodiments of the present invention relates to a vehicle comprising a gearbox according to any of the preceding embodiments.

Drawings

Exemplary embodiments of the invention are illustrated in the following drawings, in which like elements are referred to by like reference numerals, and in which:

fig. 1 shows a schematic perspective view of a portion of an integrated transmission including a divider plate in the vicinity of the divider plate, according to an embodiment of the present invention;

FIG. 2 shows an installation view of the divider plate inside the integrated transmission of FIG. 1; and

fig. 3 is a perspective view of the partition plate shown in fig. 1.

Detailed Description

Some embodiments of the invention will be described in more detail below with reference to the accompanying drawings. Unless clearly defined otherwise herein, the meaning of scientific and technical terms used herein is that which is commonly understood by one of ordinary skill in the art.

The use of "including," "comprising," or "having" and similar referents herein is to be construed to mean that the specified items are included in the range, as well as equivalents thereof. The terms "or", "or" are not meant to be exclusive, but rather denote the presence of at least one of the referenced items and include the cases where a combination of the referenced items may be present. The term "and/or" includes any and all combinations of one or more of the referenced items. References herein to "some embodiments" or the like, indicate that a particular element (e.g., feature, structure, and/or characteristic) described in connection with the invention is included in at least one embodiment described herein, and may or may not be present in other embodiments. In addition, it is to be understood that the elements of the invention may be combined in any suitable manner.

When a component is referred to herein as being "disposed on," "mounted on," or "connected to" (or the like) another component, it can be directly disposed on, mounted on, or connected to the other component, or can be indirectly disposed on, mounted on, or connected to the other component through other intervening elements. Further, two components that are "connected" or "coupled" may be two separate components that are directly or indirectly coupled together via a coupling device or may be integrally formed (i.e., two parts that are unitary).

The embodiment of the utility model discloses an integrated gearbox that is used for hybrid vehicle to have novel lubrication scheme and use vehicle of this integrated gearbox, it can solve like gears such as main reduction gear under high-speed rotatory operating mode, thereby near it forms the problem that the vacuum leads to near its gear lack lubricating oil.

As shown in fig. 1 to 3, an exemplary integrated transmission 10 includes a first gear 102, a second gear 103 that is synchronously kneaded and rotated with the first gear 102, and a partition plate 110 that partitions the first gear 102 and the second gear 103 to prevent lubricating oil of the second gear 103 in a region near the first gear 102 from being thrown away by the first gear 102. The first gear 102 is a gear (e.g., a helical gear) having a large pitch circle diameter, and the linear velocity of the gear is large, and the centrifugal force generated during high-speed rotation tends to throw off all the lubricating oil in the vicinity. The second gear 103 is a gear (e.g., a helical gear) with a small pitch diameter, and the linear velocity and the angular velocity of the gear are both large, and in the case of torque application, the gear needs to be sufficiently lubricated, otherwise, gear ablation or tooth surface pitting is likely to occur.

Typically, in some embodiments, the first gear 102 is a main reduction gear configured to reduce the output speed of the engine and transmit the reduced output speed to a lower gear for further reduction and final output to the wheels of the whole vehicle, and the second gear 103 is a mechanical gear that is engaged and rotated in synchronization with the main reduction gear to further reduce the output speed of the main reduction gear. The first gear and the second gear will be described below taking a main reduction gear and a mechanical range gear as examples, respectively.

If the partition plate 110 is not arranged in the integrated transmission case 10, when the integrated transmission case 10 operates, the main reduction gear 102 and the mechanical gear 103 synchronously rotate in a kneading manner at a certain speed ratio, and because the reference circle diameter of the main reduction gear 102 is large, the main reduction gear 102 is easy to throw out all the peripheral lubricating oil at the same linear speed, so that the mechanical gear 103 is in a vacuum oil-free state in the area close to the main reduction gear 102. In the integrated transmission 10, since the partition plate 110 is provided between the final drive gear 102 and the mechanical range gear 103 to separate the final drive gear 102 and the mechanical range gear 103, it is avoided that the vacuum is formed in the space around the tooth tips of the final drive gear 102 during high-speed operation, so that the mechanical range gear 103 in the vicinity thereof is not lubricated due to the lubricant being squeezed away by the vacuum. Therefore, partition plate 110 is provided so that main reduction gear 102 cannot take away oil near mechanical range gear 103 when rotating.

The integrated transmission 10 also typically includes a transmission housing 101 with a final drive gear 102 and a mechanical range gear 103 mounted in the transmission housing 101. In some embodiments, the transmission housing 101 is further provided with a partition rib 108 engaged with the partition plate 110, and the partition plate 110 is combined with the partition rib 108 on the transmission housing 101 to partition the interior of the transmission housing 101 into a main reduction gear cavity and a mechanical gear cavity, so that the main reduction gear 102 and the mechanical gear 103 are respectively located in the main reduction gear cavity and the mechanical gear cavity. In some embodiments, the integrated gearbox 10 further comprises a front bearing plate 104 for supporting a front bearing 105 of the mechanical range gear 103 and a motor bracket 106 for supporting a motor (not shown).

As shown in fig. 3, divider plate 110 may include a lubrication structure 113 for lubricating mechanical range gear 103 with lubricating oil from main reduction gear 102, where lubrication structure 113 includes an oil guide region 111 and an oil scraping region 112 in fluid communication with oil guide region 111. The oil guiding region 111 is used for collecting and guiding the lubricating oil from the main reduction gear 102 to the oil collecting region 112, and the oil collecting region 112 covers at least a part of the mechanical gear 103, for example, covers the lower part of the envelope of the mechanical gear 103, so that the lubricating oil collected in the oil collecting region 112 can lubricate the mechanical gear 103. In some embodiments, the oil guiding region 111 is a channel groove with two side walls, and the oil collecting region 112 is a circular arc surface structure fitting the arc surface of the mechanical gear 103. When the integrated transmission 10 operates, the main reduction gear 102 carries oil in its own cavity (main reduction gear cavity) and then the oil can flow back to the oil collecting area 112 through the oil guiding area 111 on the partition plate 110 to lubricate the mechanical gear 103.

The separation plate 110 may further include at least two anchor points/fixtures to secure its stability. In some embodiments, the separation plate 110 is coupled to the front bearing plate 104 and the motor bracket 106, respectively, by fasteners (e.g., bolts). In some embodiments, the separation plate 110 includes a first fixture 115 and a second fixture 116 that are secured to the front bearing plate 104 and the motor bracket 106, respectively. In some embodiments, the first and

second fixing portions

115 and 116 are provided with fixing holes (e.g., bolt holes) 117 and 118, respectively, for receiving fasteners. Correspondingly, the partition fixing part (blocked by the first fixing part 115 of the partition plate 110) of the front bearing plate 104 may be provided with corresponding fixing holes for cooperating with the fixing holes 117 and corresponding fasteners to achieve fastening; the partition fixing portion of the motor bracket 106 (which is blocked by the second fixing portion 116 of the partition 110) may also be provided with corresponding fixing holes for cooperating with the fixing holes 118 and corresponding fasteners to achieve fastening. In some embodiments, two bolts are used to achieve the positioning and mounting of the separation plate 110, and the positioning and orientation of the fixing holes on the front bearing plate 104 and the motor bracket 106 are configured to facilitate the fabrication of the front bearing plate 104 and the motor bracket 106, for example, the casting and machining of the front bearing plate 104 and the motor bracket 106. In some embodiments, the draw direction of the fixation hole features is consistent with the original demolding direction to minimize casting and machining difficulties. In some embodiments, the positioning of the divider plate 110 is accomplished using bolt posts that are aligned with the direction of demolding of the front bearing plate 104 and the motor bracket 106.

In addition, in other embodiments, the partition plate can be fixed on other structural members nearby the partition plate for the gearbox with different structures.

In some embodiments, the partition plate 110 is a thin-walled injection molded part, has a suitable curved surface shape, can better wrap the outer contour of the mechanical gear 103, and ensures a suitable clearance with the gear 103. When the transmission case 10 is in operation, the partition plate 110 not only functions to separate the main reduction gear 102 from the mechanical range gear 103, but also has an oil guiding area 111 and an oil collecting area 112 formed by the cambered surface thereof for guiding and collecting the lubricating oil thrown out by the rotation of the main reduction gear 102. In some embodiments, only a non-interference gap is reserved between the oil scraping area 112 of the partition plate 110 and the mechanical gear 103, and the lubricating oil collected in the oil scraping area 112 can be lifted by the top of the mechanical gear 103 so as to lubricate the gear kneading surface. In some embodiments, the oil load requirements for the divider plate 110 are not high, and the divider plate 110 has a thickness in the range of 0.5mm to 1 mm. In some embodiments, there is a requirement for temperature resistance of the partition 110, which is made of an injection molded material (e.g., PA 66) commonly used in the automotive industry.

It should be understood by those skilled in the art that although the first and second gears are described herein as a main reduction gear and a mechanical range gear, respectively, the first and second gears are not limited to the main reduction gear and the mechanical range gear, and in other embodiments, the first and second gears may be any other suitable set of gears separated by a divider plate as described herein.

The utility model discloses integrated gearbox separates gearbox machinery gear with main reduction gear, and the centrifugal force of having avoided the high-speed rotatory production of main reduction gear gets rid of lubricating oil and flies, leads to the unable lubricating oil that contacts of machinery gear and takes place to ablate. The utility model discloses integrated gearbox has adopted the low-cost lubricated scheme that splashes, and for the higher initiative lubrication mode of cost, not only can solve the lubrication problem, can also the cost of effective control lubricating system.

The foregoing specific embodiments are provided so that this disclosure will be thorough and complete, and will not be limited to these specific embodiments. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit of the invention.

Claims

1. A transmission, comprising:

a first gear;

a second gear for kneading rotation in synchronization with the first gear; and

2. A transmission according to claim 1, wherein the first gear is a main reduction gear for reducing the output rotation speed of an engine, and the second gear is a mechanical stage gear for reducing the output rotation speed of the main reduction gear.

3. The transmission of claim 2, further comprising a front bearing plate for supporting a front bearing of the mechanical range gear, the front bearing plate including a first divider plate securing portion for securing a first portion of the divider plate.

4. The transmission of claim 3, wherein the first divider plate securing portion includes securing apertures for receiving fasteners that secure the divider plate to the front bearing plate.

5. The transmission of claim 2, further comprising a motor bracket for supporting a motor, the motor bracket including a second divider plate securing portion for securing a second portion of the divider plate.

6. The transmission of claim 5, wherein the second divider plate securing portion includes securing apertures for receiving fasteners that secure the divider plate to the motor mount.

7. A transmission according to claim 1 wherein the divider plate includes lubrication structure for lubricating the second gear with lubricating oil from the first gear.

8. The transmission of claim 7, wherein the lubrication structure comprises an oil guiding region for collecting oil from the first gear and guiding the oil to the oil collecting region, wherein the oil collecting region encases at least a portion of the second gear.

9. The transmission according to claim 1, wherein the separation plate includes a first fixing portion fixed to a front bearing plate for supporting a front bearing of the first gear, and a second fixing portion fixed to a motor bracket for supporting a motor.

10. A gearbox according to claim 1, in which the second gear has a smaller gear pitch circle diameter than the first gear.

11. A vehicle comprising a gearbox according to any of claims 1 to 10.