Brake outer hub

Abstract

The present disclosure relates to the technical field of automatic transmissions and provides a brake outer hub. The brake outer hub includes an outer hub body, on which a plurality of oil passage channels are provided. A support plate is provided on one side of the outer hub body, and a first mounting portion is provided on the outer hub body; on the other side of the outer hub body, there is an annular plate, and an inner card slot and a gear ring slot are provided on the inner wall of the annular plate. A connecting sleeve is provided in the middle of the outer hub body. At one end of the connecting sleeve away from the support plate, there is a second mounting portion for connecting with the stator shaft. An oil pump cavity for mounting an oil pump is provided on the outer hub body, and the oil pump cavity is coaxially arranged with the outer hub body. The outer hub body provided in the present disclosure is provided with a plurality of oil passage channels, which can provide hydraulic oil for a plurality of components. The outer hub body is integrated with an oil pump cavity for mounting an oil pump. The stator shaft is fixed on the connecting sleeve, and the friction plate group and the gear ring are mounted on the inner wall of the annular plate, so that a plurality of functions are integrated on the outer hub body, effectively utilizing the occupied space.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automatic transmissions, and particularly to a brake outer hub. Background Art

[0002] An automotive transmission is a speed-changing device used to coordinate the engine speed and the actual driving speed of the wheels, and is used to exert the best performance of the engine. The transmission can generate different speed ratios between the engine and the wheels during the driving of the vehicle, and realize the transmission of rotational speeds of different gears.

[0003] Transmissions are divided into two types: manual and automatic. A manual transmission mainly consists of gears and a rotating shaft, and generates speed change and torque change through different gear combinations; while an automatic transmission AT consists of a hydraulic torque converter, planetary gears and a hydraulic control system, and achieves speed change and torque change through hydraulic transmission and gear combination.

[0004] Among them, the automatic transmission has the advantages of comfortable driving and reducing driver fatigue, and has become a development direction for the configuration of modern sedans. The automatic transmission uses a planetary gear mechanism for speed change. It can automatically change the speed according to the degree of the accelerator pedal and the vehicle speed change. The driver only needs to operate the accelerator pedal to control the vehicle speed. The driver can concentrate on watching the road traffic without being distracted by gear shifting.

[0005] The automatic transmission includes a housing and a plurality of planetary transmission components and a plurality of shift elements arranged in the housing. Among them, the shift elements include a clutch and a brake. By opening and closing the clutch and the brake, the transmission relationship between different planetary transmission components is controlled, thereby changing the transmission ratio of the transmission. Among them, the outer hub of the brake at the edge is connected to the inner wall of the housing, and an oil supply pipeline is integrated on the outer hub of the brake for supplying oil to structures such as the input shaft and the corresponding clutch. The oil pump of the transmission is installed on the outer hub, and the flywheel is directly driven by the hydraulic torque converter to provide hydraulic oil with a certain pressure for the work of the hydraulic torque converter, the control system and the shift actuator. However, the integration degree of this kind of outer hub is poor, and the functions it can perform are limited, and it cannot well save the internal space of the transmission. Summary of the Invention

[0006] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a brake outer hub.

[0007] The present disclosure provides a brake outer hub, including an outer hub body for connecting with the inner wall of the transmission housing. A plurality of oil passage channels for the flow of hydraulic oil are provided on the outer hub body. A support plate for sealing part of the oil passage channels is provided on one side of the outer hub body, and a first mounting portion for connecting with the support plate is provided on the outer hub body. A ring plate is provided on the other side of the outer hub body. An inner card slot for mounting a friction plate group and a ring gear slot for mounting a planetary gearset ring gear are provided on the inner wall of the ring plate. A connecting sleeve for inserting a stator shaft is provided in the middle of the outer hub body. The connecting sleeve is coaxially arranged with the outer hub body. A second mounting portion for connecting with the stator shaft is provided at one end of the connecting sleeve away from the support plate. An oil pump cavity for mounting an oil pump is provided on the outer hub body. The oil pump cavity is coaxially arranged with the outer hub body.

[0008] Optionally, the first mounting portion includes a plurality of threaded holes provided on the side of the outer hub body where it connects with the support plate.

[0009] Optionally, a plurality of mounting pillars are provided at intervals along the circumferential direction of the outer periphery of the outer hub body, and each mounting pillar is provided with one of the threaded holes.

[0010] Optionally, a reinforcing rib is provided between the mounting pillar and the outer hub body.

[0011] Optionally, a thrust washer for supporting the input sprocket of the torque converter is provided at one end of the connecting sleeve facing the support plate.

[0012] Optionally, a plurality of mounting grooves are provided at one end of the connecting sleeve facing the support plate. Mounting blocks are provided at positions corresponding to the mounting grooves on the thrust washer, and the mounting blocks are inserted into the mounting grooves.

[0013] Optionally, the second mounting portion includes an annular hole provided on the inner wall at one end of the connecting sleeve away from the support plate. A plurality of first clamping blocks are provided at intervals along the circumferential direction of the inner wall of the annular hole. An annular protrusion matching the annular hole is provided on the outer periphery of the stator shaft. A plurality of second clamping blocks are provided at intervals along the circumferential direction of the outer periphery of the annular protrusion. When the annular protrusion is supported on the step surface of the annular hole, the first clamping blocks and the second clamping blocks are staggered with each other.

[0014] Optionally, the inner wall of the annular hole is made of aluminum material, the second clamping block is made of aluminum material, and the first clamping block is formed by the second clamping block extruding the inner wall of the annular hole.

[0015] Optionally, one of the oil passage channels is the lubricating oil passage of the starting clutch. The lubricating oil passage is provided on the side of the outer hub body facing the support plate, and the support plate is used to seal the lubricating oil passage.

[0016] Optionally, the lubricating oil path is semicircular. An oil inlet is provided at one end of the lubricating oil path. The other end is bent towards the direction of the oil inlet to form an oil pocket. The oil outlet of the lubricating oil path is arranged at the end of the oil pocket. When the outer hub body is in the working position, the oil inlet is at the bottom of the outer hub body, and the oil outlet is at the top of the outer hub body. A oil distribution channel for communicating with the oil outlet is arranged inside the outer hub body, and the oil distribution channel is used for delivering hydraulic oil towards the friction plate group of the starting clutch.

[0017] The technical solution provided by the embodiment of the present disclosure has the following advantages compared with the prior art:

[0018] The outer hub body provided by the present disclosure is provided with a plurality of oil path channels, which can provide hydraulic oil for a plurality of components. An oil pump cavity is integrated on the outer hub body for installing an oil pump. The stator shaft is fixed on the connecting sleeve, and the friction plate group and the gear ring are installed on the inner wall of the annular plate, so that a plurality of functions are integrated on the outer hub body, effectively utilizing the occupied space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present disclosure and used together with the specification to explain the principles of the present disclosure.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0021] Figure 1 Schematic diagram of the outer hub body according to the embodiment of the present disclosure;

[0022] Figure 2 Schematic diagram of a thrust washer provided on the connecting sleeve of the outer hub body according to the embodiment of the present disclosure;

[0023] Figure 3 Schematic diagram of one side of the outer hub body provided with an annular plate according to the embodiment of the present disclosure;

[0024] Figure 4 Schematic diagram of the connection between the outer hub body and the support plate according to the embodiment of the present disclosure;

[0025] Figure 5 Schematic diagram of the outer hub body in the working position according to the embodiment of the present disclosure.

[0026] Among them, 10 is the outer hub body; 20 is the oil passage; 21 is the lubricating oil passage; 22 is the oil inlet; 23 is the oil outlet; 24 is the oil scooping part; 30 is the support plate; 40 is the annular plate; 41 is the inner card slot; 42 is the ring gear slot; 50 is the connecting sleeve; 51 is the installation slot; 52 is the annular hole; 60 is the oil pump cavity; 70 is the threaded hole; 71 is the installation pillar; 72 is the reinforcing rib; 80 is the thrust washer; 81 is the installation block. Detailed implementation manners

[0027] In order to more clearly understand the above-mentioned objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, without conflict, the embodiments of the present disclosure and the features in the embodiments may be combined with each other.

[0028] Many specific details are set forth in the following description in order to fully understand the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present disclosure, rather than all of the embodiments.

[0029] Combined with Figures 1 to 5 As shown, the brake outer hub provided by the embodiment of the present application includes an outer hub body 10 for connecting with the inner wall of the transmission housing, wherein the outer hub body 10 is fixedly arranged on the inner wall of the transmission housing. Combined with Figure 1 and Figure 2 As shown, the outer hub body 10 is provided with a plurality of oil passage channels 20 through which hydraulic oil can flow, and each oil passage channel 20 leads to different components to provide hydraulic oil for each component. As Figure 4 shown, one side of the outer hub body 10 is provided with a support plate 30 for sealing part of the oil passage channels 20, and the outer hub body 10 is provided with a first installation part for connecting with the support plate 30. Specifically, part of the oil passage channels 20 are opened on the side of the outer hub body 10 facing the support plate 30. Therefore, in order to prevent oil leakage, a support plate 30 needs to be arranged on the end face of the outer hub body 10.

[0030] As Figure 3 shown, an annular plate 40 is arranged on the other side of the outer hub body 10, and the annular plate 40 is coaxially arranged with the outer hub body 10. The inner wall of the annular plate 40 is provided with an inner card slot 41 for installing a friction plate group and a ring gear slot 42 for installing a planetary row ring gear. Specifically, a plurality of clamping columns are arranged along the circumferential direction of the inner wall of the annular plate 40, and the clamping columns are arranged at intervals, so that an inner card slot 41 is formed between every two clamping columns, and the steel sheet of the friction plate group is connected with the inner card slot 41. The ring gear of the planetary row is installed on the inner wall of the ring gear slot 42, and the ring gear slot 42 is arranged on the side of the inner card slot 41 facing away from the support plate 30. This design method makes rational use of the internal space of the annular plate 40 and is convenient for the installation of the friction plate group and the planetary row ring gear.

[0031] Combined with Figure 1 、 Figure 2 and Figure 3 As shown, a connecting sleeve 50 into which the stator shaft can be inserted is provided in the middle of the outer hub body 10. The connecting sleeve 50 is coaxially arranged with the outer hub body 10, and a through hole through which the stator shaft can pass is provided inside the connecting sleeve 50. A second mounting portion for connecting with the stator shaft is provided at one end of the connecting sleeve 50 away from the support plate 30. One end of the stator shaft is connected to the torque converter, and the other end is connected to the connecting sleeve 50. Since the stator shaft is relatively common in the prior art, the present disclosure does not describe the stator shaft in detail. Correspondingly, a through hole is provided on the support plate 30, and the stator shaft is installed on the connecting sleeve 50 through the support plate 30.

[0032] An oil pump cavity 60 for installing an oil pump is provided on the outer hub body 10. The oil pump cavity 60 is coaxially arranged with the outer hub body 10. The oil pump is installed in the oil pump cavity 60. A hydraulic oil inlet and a hydraulic oil outlet are provided on the outer hub body 10, and the hydraulic oil inlet and the hydraulic oil outlet are respectively communicated with the oil inlet and the oil outlet of the oil pump.

[0033] In some transmissions, the brake is connected to the piston device of the clutch, that is, the piston device is arranged on the outer periphery of the annular plate 40 of the outer hub body 10. One of the oil passage channels 20 on the outer hub body 10 flows to the main piston cavity of the piston device, and one oil passage channel 20 flows to the balance piston cavity of the piston device. Therefore, in order to avoid hydraulic oil leakage, a sealing steel sleeve is provided between the outer ring of the annular plate 40 and the piston device. Specifically, the sealing steel sleeve is installed on the annular plate 40 through bolts to increase the connection stability and prevent the sealing steel sleeve from moving during use.

[0034] The outer hub body 10 provided by the present disclosure is provided with a plurality of oil passage channels 20, which can provide hydraulic oil for a plurality of components. An oil pump cavity 60 for installing an oil pump is integrated on the outer hub body 10. The stator shaft is fixed on the connecting sleeve 50, and the friction plate group and the gear ring are installed on the inner wall of the annular plate 40, so that a plurality of functions are integrated on the outer hub body 10, effectively utilizing the occupied space.

[0035] Combined with Figure 1 and Figure 2As shown in the figure, the first mounting portion includes a plurality of threaded holes 70 provided on the side where the outer hub body 10 is connected to the support plate 30. That is, through holes are provided at positions on the support plate 30 corresponding to the respective threaded holes 70. After the screw rod passes through the through hole, it is screwed into the threaded hole 70 to complete the connection between the outer hub body 10 and the support plate 30. This connection method is convenient for disassembly. Further optimized, a plurality of mounting struts 71 are provided at intervals along the circumferential direction of the outer periphery of the outer hub body 10, and each mounting strut 71 is provided with a threaded hole 70. This design method makes the middle part of the outer hub body 10 hollow, reducing the volume of the outer hub body 10, and further reducing the internal space of the outer hub body 10 occupying the transmission housing. Further optimized, a reinforcing rib 72 is provided between the mounting strut 71 and the outer hub body 10. By providing the reinforcing rib 72, the strength of the mounting strut can be effectively increased.

[0036] As Figure 4 shown, the oil pump of the transmission is usually directly driven by the flywheel through the torque converter. That is, an oil pump sprocket is provided on the rotating shaft of the oil pump, an input sprocket is provided on the input shaft of the torque converter, and the oil pump sprocket and the input sprocket are connected by a chain. A notch through which the chain can pass is provided on the support plate 30, and thus the oil pump is driven to rotate by the torque converter. Among them, the input sprocket extends into the support plate 30, and the end of the input sprocket is supported on the outer hub body 10 for axial limit. Therefore, as Figure 2 shown, in order to prevent friction between the input sprocket and the outer hub body 10, a thrust washer 80 for supporting the input sprocket of the torque converter is provided at one end of the connecting sleeve 50 facing the support plate 30.

[0037] Combined with Figure 1 and Figure 2 shown, a plurality of mounting grooves 51 are provided at one end of the connecting sleeve 50 facing the support plate 30. At positions corresponding to the mounting grooves 51 on the thrust washer 80, mounting blocks 81 are provided. The mounting blocks 81 are inserted into the mounting grooves 51 to realize the limit of the thrust washer 80. The structure is simple and convenient for disassembly and assembly.

[0038] As Figure 3 shown, the second mounting portion includes an annular hole 52 provided on the inner wall of the connecting sleeve 50 at the end far from the support plate 30. Among them, the diameter of the annular hole 52 is larger than the diameter of the inner wall of the connecting sleeve 50. A plurality of first clamping blocks are provided at intervals along the circumferential direction of the inner wall of the annular hole 52. An annular protrusion matching the annular hole 52 is provided on the outer periphery of the stator shaft. A plurality of second clamping blocks are provided at intervals along the circumferential direction of the outer periphery of the annular protrusion. When the annular protrusion is supported on the end face of the annular hole 52, the respective first clamping blocks and second clamping blocks are staggered, and the rotation of the stator shaft is limited by the adjacent first clamping blocks and second clamping blocks.

[0039] Among them, the inner wall of the annular hole 52 is made of aluminum, the second clamping block is made of aluminum, and the first clamping block is formed by the second clamping block extruding the inner wall of the annular hole 52. Among them, the inner wall of the annular hole 52 does not refer to a thin wall and should have a certain thickness, that is, the side of the annular hole 52 close to the central axis is made of aluminum, so that the second clamping block can extrude the annular hole 52 to form the first clamping block. And the setting method of using aluminum for part of the annular hole 52 can increase the strength of the outer hub body 10. Specifically, the outer diameter of the annular protrusion is similar to the inner diameter of the annular hole 52, so that the annular protrusion can be inserted into the annular hole 52, and there is a certain gap between the annular hole 52 and the annular protrusion, which is convenient for the formation of the first clamping block.

[0040] Further optimized, the cross-sections of the first clamping block and the second clamping block along the radial direction of the stator shaft are both conical, so that an inverted conical cavity is formed between two adjacent second clamping blocks. When the second clamping block extrudes the annular hole 52, the deformed part of the annular hole 52 extends along the side walls of two adjacent second clamping blocks, and then the first clamping block is formed.

[0041] As Figure 5 shown, one of the oil passage channels 20 is the lubricating oil passage 21 of the starting clutch. The lubricating oil passage 21 is arranged on the side of the outer hub body 10 facing the support plate 30, and the support plate 30 is used to seal the lubricating oil passage 21. Specifically, the lubricating oil passage 21 is semicircular. One end of the lubricating oil passage 21 is provided with an oil inlet 22, and the other end is bent towards the direction of the oil inlet 22 to form an oil collecting part 24. The oil outlet 23 of the lubricating oil passage 21 is arranged at the end of the oil collecting part 24. And when the outer hub body 10 is in the working position, the oil inlet 22 is at the bottom of the outer hub body 10, and the oil outlet 23 is at the top of the outer hub body 10. A distributing oil passage for communicating with the oil outlet 23 is arranged inside the outer hub body 10, and the distributing oil passage is used to convey hydraulic oil towards the friction plate group of the starting clutch. Among them, the top and bottom here respectively refer to the positions close to the top and close to the bottom.

[0042] When the lubricating oil passage 21 of this design method supplies oil, the hydraulic oil is communicated from the oil inlet 22 towards the oil outlet 23. Since the hydraulic oil itself has gravity, when the lubricating oil passage 21 is filled with hydraulic oil, it flows towards the oil collecting part 24. Due to the corner in the oil collecting part 24, the hydraulic oil flows towards the distributing oil passage under the action of gravity. Correspondingly, the outlet of the distributing oil passage should also be at the top or close to the top of the friction plate group, so that the hydraulic oil flowing out of the distributing oil passage fills the friction plate group under the action of gravity, increasing the lubrication effect. At the same time, due to the existence of the oil collecting part 24, when the hydraulic oil is depressurized, the oil collecting part 24 and the distributing oil passage store part of the hydraulic oil, preparing for the next lubrication and increasing the response speed.

[0043] It should be noted that in this document, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0044] The above are only specific embodiments of the present disclosure, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A brake outer hub, characterized in that, it includes an outer hub body (10) for connecting to the inner wall of the transmission housing. The outer hub body (10) is provided with a plurality of oil passage channels (20) through which hydraulic oil can flow. One side of the outer hub body (10) is provided with a support plate (30) for sealing part of the oil passage channels (20), and the outer hub body (10) is provided with a first mounting portion for connecting to the support plate (30); the other side of the outer hub body (10) is provided with an annular plate (40). The inner wall of the annular plate (40) is provided with an inner card slot (41) for mounting a friction plate group and a ring gear slot (42) for mounting a planetary row ring gear. The middle of the outer hub body (10) is provided with a connecting sleeve (50) into which a stator shaft can be inserted. The connecting sleeve (50) is coaxially arranged with the outer hub body (10). One end of the connecting sleeve (50) away from the support plate (30) is provided with a second mounting portion for connecting to the stator shaft. The outer hub body (10) is provided with an oil pump cavity (60) for mounting an oil pump. The oil pump cavity (60) is coaxially arranged with the outer hub body (10).

2. The brake outer hub according to claim 1, characterized in that, the first mounting portion includes a plurality of threaded holes (70) provided on the side of the outer hub body (10) connected to the support plate (30).

3. The brake outer hub according to claim 2, characterized in that, a plurality of mounting pillars (71) are arranged at intervals along the circumferential direction of the outer periphery of the outer hub body (10), and each mounting pillar (71) is provided with one of the threaded holes (70).

4. The brake outer hub according to claim 3, characterized in that, a reinforcing rib (72) is provided between the mounting pillar (71) and the outer hub body (10).

5. The brake outer hub according to claim 1, characterized in that, a thrust washer (80) for supporting the input sprocket of the torque converter is provided at one end of the connecting sleeve (50) facing the support plate (30).

6. The brake outer hub according to claim 5, characterized in that, a plurality of mounting grooves (51) are provided at one end of the connecting sleeve (50) facing the support plate (30). Mounting blocks (81) are provided at positions of the thrust washer (80) corresponding to the mounting grooves (51), and the mounting blocks (81) are inserted into the mounting grooves (51).

7. The brake outer hub according to claim 1, characterized in that, the second mounting portion includes an annular hole (52) provided on the inner wall of one end of the connecting sleeve (50) away from the support plate (30). A plurality of first locking blocks are arranged at intervals along the circumferential direction of the inner wall of the annular hole (52). The outer periphery of the stator shaft is provided with an annular protrusion matching the annular hole (52). A plurality of second locking blocks are arranged at intervals along the circumferential direction of the outer periphery of the annular protrusion. When the annular protrusion is supported on the step surface of the annular hole (52), each of the first locking blocks and the second locking blocks is staggered.

8. The brake outer hub according to claim 7, It is characterized in that the inner wall of the annular hole (52) is made of aluminum material, the second clamping block is made of aluminum material, and the first clamping block is formed by the second clamping block extruding the inner wall of the annular hole (52).

9. The outer hub of the brake according to claim 1 It is characterized in that one of the oil passage channels (20) is the lubricating oil passage (21) of the starting clutch. The lubricating oil passage (21) is arranged on one side of the outer hub body (10) facing the support plate (30), and the support plate (30) is used to seal the lubricating oil passage (21).

10. The outer hub of the brake according to claim 9 It is characterized in that the lubricating oil passage (21) is semicircular. One end of the lubricating oil passage (21) is provided with an oil inlet (22), and the other end bends towards the direction of the oil inlet (22) to form an oil pocket part (24). The oil outlet (23) of the lubricating oil passage (21) is arranged at the end of the oil pocket part (24). When the outer hub body (10) is in the working position, the oil inlet (22) is at the bottom of the outer hub body (10), and the oil outlet (23) is at the top of the outer hub body (10). A distribution oil passage for communicating with the oil outlet (23) is arranged inside the outer hub body (10), and the distribution oil passage is used to convey hydraulic oil towards the friction plate group of the starting clutch.

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