A hydrodynamic torque converter roller clutch

Abstract

The utility model discloses a kind of hydraulic torque converter roller clutches, belong to clutch field.The device includes first shell, the inner cavity rotation of first shell is connected with limit plate, and the inside of limit slot is provided with roller between the inner wall of first shell, the surface of limit plate is provided with turbine blade, and the one end of first shell is buckled with pump wheel shell body, by being provided with the limit plate for limiting roller between first shell and pump wheel shell body, when turbine blade drives limit plate to rotate, micro-groove is additionally provided on the surface of roller, the sliding slot structure of limit slot surface extends along the motion direction of roller, so that more accurate and stable motion trajectory can be provided for roller to reduce sliding friction coefficient, realize active lubrication, clutch assembly is under the condition that the appearance size is unchanged, carrying capacity is improved, life is improved, and reliability is also greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of clutches, and in particular to a hydraulic torque converter roller clutch. Background Technology

[0002] The roller clutch of the hydraulic torque converter is a key component of the hydraulic torque converter. It uses a roller-type one-way clutch to fix the guide wheel, ensuring that the guide wheel can only rotate in the same direction as the pump wheel and prevent reverse rotation. Its function is to amplify the torque through the guide wheel at low speeds and to achieve mechanical connection through the locking function at high speeds to reduce energy loss.

[0003] During the operation of the roller clutch in the hydraulic torque converter, when the pump wheel rotates, ATF (automatic transmission fluid) is thrown towards the turbine, driving the turbine to rotate. The guide wheel is fixed by a one-way clutch, changing the direction of the fluid flow returning from the turbine to impact the back of the pump wheel blades, forming a torque-increasing effect. At high speed, the fluid flow impacts the back of the guide wheel blades, the one-way clutch is unlocked, and the guide wheel rotates in the same direction as the pump wheel, entering a coupling state.

[0004] In summary, in the existing hydraulic torque converter roller clutch, the limiting mechanism fails to adequately constrain the roller's degree of freedom of movement when limiting the roller, resulting in slight displacement or wobbling of the roller even when the clutch is operating at high speed or under large torque. Utility Model Content

[0005] This invention provides a roller clutch for a hydraulic torque converter, which solves the problem in the prior art where the limiting mechanism of the roller clutch fails to fully constrain the degree of freedom of the roller's movement when limiting the roller, resulting in slight displacement or wobbling of the roller even when the clutch is running at high speed or under large torque.

[0006] A hydraulic torque converter roller clutch includes a clutch body, the clutch body including a first housing, a limiting plate rotatably connected to the inner cavity of the first housing, a limiting groove arrayed on the peripheral side of the limiting plate, a roller disposed between the inside of the limiting groove and the inner wall of the first housing, a turbine blade disposed on the surface of the limiting plate, and a pump wheel housing fastened to one end of the first housing.

[0007] Preferably, a torque output shaft is provided in the middle of the pump wheel housing.

[0008] Preferably, the pump wheel is provided in the inner cavity of the pump wheel housing, and a guide wheel is provided on the side of the pump wheel.

[0009] Preferably, a spline is provided in the middle of the limiting plate.

[0010] Preferably, a spline sleeve is provided in the middle of the turbine blade, and the turbine blade is snapped onto the outside of the spline by the spline sleeve.

[0011] Preferably, the surface of the turbine blade has multiple connecting rods extending in all directions.

[0012] Preferably, one end of the connecting rod extends downward with a sleeve.

[0013] Preferably, an inclined groove is provided between the limiting grooves, and the sleeve plate is engaged with the surface of the inclined groove.

[0014] Preferably, the inner wall of the limiting groove is provided with a fixing groove, and a spring is provided inside the fixing groove, with one end of the spring attached to the surface of the roller.

[0015] Preferably, the surface of the limiting groove is provided with a lubricating oil channel extending along the direction of roller movement, and the surface of the roller is provided with micro-grooves.

[0016] This utility model provides a roller clutch for a hydraulic torque converter. By setting a limiting plate between the first housing and the pump wheel housing to limit the movement of the rollers, when the turbine blades drive the limiting plate to rotate, micro-grooves are added to the surface of the rollers. The sliding groove structure set on the surface of the limiting groove extends along the direction of roller movement. This can provide the rollers with a more precise and stable movement trajectory, reduce the coefficient of sliding friction, and achieve active lubrication. Under the condition of unchanged external dimensions, the clutch assembly has improved load-bearing capacity, lifespan, and reliability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the overall structure of a hydraulic torque converter roller clutch provided by this utility model; Figure 2 A cross-sectional view of the overall structure of a hydraulic torque converter roller clutch provided by this utility model; Figure 3 A partial structural cross-sectional view of a hydraulic torque converter roller clutch provided by this utility model; Figure 4 An enlarged view of the structure of the roller clutch at point A of a hydraulic torque converter provided by this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Clutch body; 11. First housing; 12. Pump wheel housing; 13. Pump wheel; 14. Guide wheel; 15. Torque output shaft; 16. Turbine blade; 160. Spline sleeve; 17. Limiting plate; 170. Limiting groove; 171. Inclined groove; 172. Fixing groove; 18. Roller; 19. Spline; 110. Connecting rod; 111. Sleeve plate; 112. Spring. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below, but it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0021] like Figures 1 to 4 As shown in the figure, the present invention provides a hydraulic torque converter roller clutch, including a clutch body 1, the clutch body 1 including a first housing 11, a limiting plate 17 rotatably connected to the inner cavity of the first housing 11, limiting grooves 170 arrayed on the peripheral side of the limiting plate 17, rollers 18 disposed between the inside of the limiting grooves 170 and the inner wall of the first housing 11, turbine blades 16 disposed on the surface of the limiting plate 17, a pump wheel housing 12 fastened to one end of the first housing 11, and the hydraulic torque converter consisting of a pump wheel 13 and turbine blades. The pump wheel 13 consists of a pump wheel 16 and a guide wheel 14. They work together to transmit and increase torque. The pump wheel 13 transmits the engine's power to the turbine blades 16 through a liquid, usually oil. The turbine blades 16 then drive the vehicle's transmission system. The guide wheel 14 is located between the pump wheel 13 and the turbine blades 16. It is used to change the direction of fluid flow, increase the output torque or keep it constant, thereby achieving continuously variable transmission. In a hydraulic torque converter, the roller clutch is usually a one-way clutch, which allows power to be transmitted freely in one direction and locked in the opposite direction.

[0022] A torque output shaft 15 is provided in the middle of the pump wheel housing 12. A pump wheel 13 is provided in the inner cavity of the pump wheel housing 12. A guide wheel 14 is provided on the side of the pump wheel 13. A spline 19 is provided in the middle of the limiting plate 17. A spline sleeve 160 is provided in the middle of the turbine blade 16. The turbine blade 16 is snapped onto the outside of the spline 19 through the spline sleeve 160. The spline 19 is used to connect the turbine blade 16 and the limiting plate 17. When the pump wheel 13 rotates and drives the turbine blade 16 to rotate, the limiting plate 17 rotates simultaneously through the connection of the spline 19 and the spline sleeve 160. When the engine is running, the pump wheel 13 rotates and drives the liquid to flow. The liquid impacts the turbine blade 16 and makes it rotate. When mechanical connection is required to improve transmission efficiency, such as in a vehicle... When the vehicle accelerates or is driving steadily, the roller clutch starts to work. The rollers are in a free state inside the limiting groove 170, allowing the mechanical connection between the pump wheel 13 and the turbine blade 16, thereby realizing the direct transmission of power. When it is necessary to disconnect the mechanical connection to allow slip or prevent reverse power transmission, such as when the vehicle decelerates or shifts gears, the rollers 18 will wedge tightly inside the limiting groove 170, forming a mechanical lock to prevent the turbine blade 16 from rotating in the opposite direction relative to the pump wheel 13. Since the rollers 18 are limited in the limiting groove 170, the rollers 18 can maintain a stable movement trajectory during the clutch operation, reducing torque fluctuations and component wear caused by the displacement of the rollers 18, thereby improving the overall performance and reliability of the clutch.

[0023] Multiple connecting rods 110 extend outwards from the surface of the turbine blade 16. A sleeve 111 extends downwards from one end of each connecting rod 110. An inclined groove 171 is provided between the limiting grooves 170. The sleeve 111 engages with the surface of the inclined groove 171. A fixing groove 172 is formed on the inner wall of the limiting groove 170. A spring 112 is installed inside the fixing groove 172, with one end of the spring 112 fitting against the surface of the roller 18. Lubricating oil passages extending along the movement direction of the roller 18 are provided on the surface of the limiting groove 170. Micro-grooves are provided on the surface of the roller 18. The spring 112 provides a continuous preload to the roller 18, ensuring that the roller 18 maintains appropriate contact pressure within the limiting groove 170 and preventing displacement of the roller 18 due to vibration or external impact. After the clutch completes a working cycle, the spring 112 helps the roller 18 quickly return to its initial position, ensuring that the roller 18 can immediately engage in operation at the start of the next working cycle. The lubrication channel is used to engage with the protrusion on the surface of the roller 18 inside the limiting groove 170, preventing the roller 18 from moving axially or circumferentially along the limiting groove 170 when the clutch is running. The design of the guiding and limiting functions makes the movement of the roller 18 in the slot smoother and more stable, reducing clutch failures caused by the poor movement of the roller 18. The sleeve 111 is used to connect to the surface of the turbine blade 16 through the connecting rod 110, and rotates with the turbine blade 16. Power is transmitted through the interlocking action between the inclined groove 171 and the sleeve 111.

[0024] Working principle: When the engine is running, the pump wheel 13 rotates and drives the liquid flow. The liquid impacts the turbine blades 16, causing them to rotate. When mechanical connection is needed to improve transmission efficiency, such as when the vehicle is accelerating or driving steadily, the roller clutch starts to work. The rollers 18 are in a free state inside the limiting groove 170, allowing mechanical connection between the pump wheel 13 and the turbine blades 16, thereby realizing direct power transmission. The lubricating oil passage is used to cooperate with the protrusion set on the surface of the rollers 18 inside the limiting groove 170 to prevent the rollers 18 from moving axially or circumferentially along the limiting groove 170 when the clutch is running. The design of the guiding and limiting functions makes the movement of the rollers 18 in the groove smoother and more stable, reducing clutch failure caused by the poor movement of the rollers 18.

[0025] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A hydraulic torque converter roller clutch, comprising a clutch body (1), characterized in that, The clutch body (1) includes a first housing (11), the inner cavity of the first housing (11) is rotatably connected to a limiting plate (17), the peripheral side of the limiting plate (17) is provided with a limiting groove (170) in an array, a roller (18) is provided between the inside of the limiting groove (170) and the inner wall of the first housing (11), the surface of the limiting plate (17) is provided with a turbine blade (16), and a pump wheel housing (12) is fastened to one end of the first housing (11).

2. The hydraulic torque converter roller clutch as described in claim 1, characterized in that, A torque output shaft (15) is provided in the middle of the pump wheel housing (12).

3. A hydraulic torque converter roller clutch as described in claim 2, characterized in that, The pump wheel housing (12) has a pump wheel (13) inside its cavity, and a guide wheel (14) is provided on the side of the pump wheel (13).

4. A hydraulic torque converter roller clutch as described in claim 1, characterized in that, The limiting plate (17) is provided with a spline (19) in the middle.

5. A hydraulic torque converter roller clutch as described in claim 1, characterized in that, A spline sleeve (160) is provided in the middle of the turbine blade (16), and the turbine blade (16) is snapped onto the outside of the spline (19) by the spline sleeve (160).

6. A hydraulic torque converter roller clutch as described in claim 5, characterized in that, The surface of the turbine blade (16) has multiple connecting rods (110) extending outwards in all directions.

7. A hydraulic torque converter roller clutch as described in claim 6, characterized in that, One end of the connecting rod (110) extends downward to a sleeve (111).

8. A hydraulic torque converter roller clutch as described in claim 7, characterized in that, An inclined groove (171) is provided between the limiting grooves (170), and the sleeve plate (111) is snapped onto the surface of the inclined groove (171).

9. A hydraulic torque converter roller clutch as described in claim 8, characterized in that, The inner wall of the limiting groove (170) is provided with a fixing groove (172), and a spring (112) is provided inside the fixing groove (172). One end of the spring (112) is attached to the surface of the roller (18).

10. A hydraulic torque converter roller clutch as described in claim 9, characterized in that, The surface of the limiting groove (170) is provided with a lubricating oil channel extending along the movement direction of the roller (18), and the surface of the roller (18) is provided with a micro-protrusion groove.

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