An open lubrication system for an intelligent torque manager

Abstract

The present invention discloses an open lubrication system for an intelligent torque manager, belonging to the field of torque managers. A plurality of oil-slinging holes are provided on the outer circumference of the clutch housing of the torque manager, an oil return pool is provided at the lower part outside the outer housing, an oil outlet and an oil inlet communicating with the oil return pool are opened on the outer housing, and a plurality of oil-sucking holes are opened on the rear end cover of the clutch housing. The lubricating oil is slung out from the oil-slinging holes under the rotation of the clutch housing and enters the oil return pool. The oil-sucking holes generate suction under the rotation of the clutch housing and suck the lubricating oil in the oil return pool into the friction plate group, forming a circulating flow of the lubricating oil. By providing a plurality of oil-slinging holes on the clutch housing, the present invention enables the high-temperature lubricating oil to be slung out by centrifugal force, and then sucks the cooled lubricating oil through the oil-sucking holes, continuously taking away the heat generated by the friction plates and improving the heat capacity of the product. It also enables the effective circulation of the lubricating oil more favorably through the turbine-type oil guiding cover, with a simple structure and remarkable effects, ensuring the durability of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent torque managers, and in particular to an open lubrication system of an intelligent torque manager. Background Art

[0002] Four-wheel drive intelligent torque managers are mainly divided into electromagnetic, electro-hydraulic, and electric motor types based on their working principle. Among them, electromagnetic intelligent torque managers, due to their magnetic excitation principle, have the advantages of simple structure and low failure rate compared to electro-hydraulic and electric motor types.

[0003] As attached Figure 1 As shown, the conventional electromagnetic intelligent torque manager comprises an input shaft 1, a clutch housing 2, an electromagnetic coil 3, a friction plate pack, and an output shaft 4. The friction plate pack comprises 11 sets of friction plates, three of which are primary friction plates 7 and eight of which are secondary friction plates 8. Each set of friction plates is composed of two types of friction plates arranged in alternating patterns: those with a paper-based material are called friction plates 5, while those without friction material are called steel plates 6. The steel plates 6, clutch housing 2, and input shaft 1 are all rigidly connected using splines. The friction plates 5 are also rigidly connected to the output shaft 4 using splines. The flange of the input shaft 1 is connected to the vehicle's intermediate drive shaft, allowing the intermediate drive shaft's torque to be transferred into the torque manager. When the electromagnetic coil 3 is energized, it generates a magnetic force that attracts the primary friction plate pack 7, transferring torque from the clutch housing 2 to the primary friction plate pack 7. The amplification function of the cam assembly 9 compresses the secondary friction plate pack 8, thereby transmitting the torque to the output shaft 4, completing the torque transfer process. From the perspective of the entire vehicle, the torque manager's input is synchronized with the vehicle's front wheel speed, while its output is synchronized with the rear wheel speed. This means that when the front and rear wheels rotate at different speeds, relative slip will occur between the torque manager's steel plate 6 and friction plate 5. This slip releases energy in the form of increased temperature. The speed of this temperature rise is influenced by two factors: the relative speed difference between the friction plate 5 and the steel plate 6, and the pressure between them. The greater the speed difference, the faster the temperature rise; and the greater the pressure between the friction plate 5 and the steel plate 6, the more severe the temperature rise.

[0004] The existing electromagnetic intelligent torque manager uses a self-sealing lubrication system, that is, lubricating oil is set between the friction plate 5 and the steel plate 6. The total amount of lubricating oil is only 130ml. Under extreme driving conditions, the rapid slippage of the friction plate 5 will generate a large amount of heat, and the lubricating oil cannot quickly remove the heat, causing the internal temperature to rise sharply, thereby burning the friction plate 5, causing product failure and affecting the service life of the torque manager.

[0005] It can be seen that there are still obvious inconveniences and defects in the lubrication systems of existing intelligent torque managers in terms of structure, method, and use, and thus urgent further improvement is needed. How to create a new open lubrication system for intelligent torque managers, enabling it to quickly carry away the heat generated by friction plates through the open circulation of lubricating oil during the operation of the intelligent torque manager, avoiding the risk of ablation, and extending the service life of the torque manager has become an extremely urgent improvement goal in the current industry. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an open lubrication system for an intelligent torque manager, enabling it to quickly carry away the heat generated by friction plates through the open circulation of lubricating oil during the operation of the intelligent torque manager, avoiding the risk of ablation, and extending the service life of the torque manager, thereby overcoming the deficiencies of the existing sealed lubrication systems of intelligent torque managers.

[0007] To solve the above technical problems, the present invention provides an open lubrication system for an intelligent torque manager. The intelligent torque manager includes an input shaft, a clutch housing, a friction plate group, an output shaft, and an outer housing. The friction plate group includes friction plates and steel plates arranged in an alternating manner. The input shaft, the clutch housing, and the steel plates are rigidly connected. The friction plates are rigidly connected to the output shaft. Lubricating oil is filled between the friction plates and the steel plates. A plurality of oil-slinging holes are provided on the outer circumference of the clutch housing. An oil return pool is provided at the lower outer side of the outer housing. An oil outlet and an oil inlet communicating with the oil return pool are provided on the outer housing. The lubricating oil is slung out from the oil-slinging holes under the rotation of the clutch housing, and under the action of gravity along the gap between the clutch housing and the outer housing, enters the oil return pool through the oil outlet.

[0008] A rear end cover is provided at one end of the clutch housing close to the output shaft. A plurality of oil-gnawing holes are provided on the rear end cover. The inner side of the oil-gnawing holes communicates with the friction plate group, and the outer side of the oil-gnawing holes communicates with the gap between the clutch housing and the outer housing. The oil-gnawing holes generate suction under the rotation of the clutch housing, sucking the lubricating oil in the oil return pool from the oil inlet into the gap between the clutch housing and the outer housing, and entering the interior of the friction plate group, forming a circulating flow of lubricating oil to achieve heat dissipation.

[0009] Further improvement is that an oil guiding cover is installed opposite to the rear end cover. The oil guiding cover is fixed on the inner wall of the outer housing. Turbine-shaped oil guiding vanes are provided on the side of the oil guiding cover facing the rear end cover.

[0010] For further improvement, the turbine oil guiding vane includes a plurality of first oil guiding vanes rotating in the same direction and a second oil guiding vane with a direction opposite to that of the first oil guiding vanes, and the oil outlet is arranged on the outer housing corresponding to the opening between the first oil guiding vanes and the second oil guiding vane.

[0011] For further improvement, six evenly distributed oil nibbling ports are formed on the rear end cover, and six first oil guiding vanes rotating in the same direction are fixed on the oil guiding cover.

[0012] For further improvement, at least two rows of oil throwing holes distributed axially are arranged on the outer circumference of the clutch housing for throwing out the lubricating oil in both the primary friction plate group and the secondary friction plate group in the friction plate group.

[0013] For further improvement, the oil throwing holes adopt circular oil throwing holes.

[0014] For further improvement, the oil nibbling ports adopt a sunken square hole structure, and the outer edge of the sunken square hole structure has a certain rotational slope.

[0015] For further improvement, the intelligent torque manager adopts an electromagnetic intelligent torque manager.

[0016] After adopting such a design, the present invention has at least the following advantages:

[0017] In the open lubrication system of the electromagnetic intelligent torque manager of the present invention, by arranging a plurality of oil throwing holes on the clutch housing, the lubricating oil inside the friction plate group is thrown out by centrifugal force, taking away the heat generated by the severe slipping of the friction plates; and by arranging oil nibbling ports on the rear end cover, the cooled lubricating oil can be cyclically pressed into the friction plate group, quickly supplementing the thrown out high-temperature lubricating oil, realizing the circulation of the lubricating oil, continuously taking away the heat generated by the friction plates and supplementing it with the cooled lubricating oil, thereby improving the product heat capacity of the electromagnetic intelligent torque manager.

[0018] Also, through the setting of the turbine oil guiding cover, it can cooperate with the rear end cover to effectively play the role of the oil nibbling ports, prompting the cooled lubricating oil to be quickly pressed into the friction plate group, forming an effective circulation of the lubricating oil, and greatly improving the product heat capacity.

[0019] The open lubrication system of the electromagnetic intelligent torque manager of the present invention has a simple structure and remarkable effects, ensuring the durability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, the following further describes the present invention in detail in conjunction with the drawings and specific embodiments.

[0021] Figure 1It is a schematic structural diagram of an existing electromagnetic intelligent torque manager.

[0022] Figure 2 It is a three-dimensional structural diagram of the electromagnetic intelligent torque manager of the present invention with the housing at the output shaft end removed.

[0023] Figure 3 It is a schematic structural diagram of the housing at the output shaft end of the electromagnetic intelligent torque manager of the present invention showing the oil guiding cover.

[0024] Figure 4 It is a schematic overall structural diagram of the electromagnetic intelligent torque manager of the present invention.

[0025] Figure 5 It is Figure 4 A sectional view taken along line A - A in

[0026] Figure 6 It is Figure 4 A sectional view taken along line C - C in

[0027] Figure 7 It is Figure 4 A sectional view taken along line D - D in Detailed implementation manner

[0028] In order to solve the problems existing in the existing intelligent torque manager in the background technology of the present application, the present application makes improvements on the original intelligent torque manager to form a newly developed oil lubrication system, adopting a passive open lubrication form, which can effectively improve the heat capacity of the product. The specific embodiments are as follows.

[0029] Referring to the attached Figures 2 to 7 As shown, the structure of the electromagnetic intelligent torque manager in this embodiment is the same as that of the existing electromagnetic intelligent torque manager, that is, it includes an input shaft 1, a clutch housing 2, an electromagnetic coil 3, a friction plate group, an output shaft 4 and a housing 10. The friction plate group has a total of 11 friction plates, among which 3 are primary friction plates 7 and 8 are secondary friction plates 8. The friction plate group includes friction plates 5 and steel plates 6 arranged alternately. The input shaft 1, the clutch housing 2 and the steel plate 6 are rigidly connected in the form of splines, and the friction plate 5 is also rigidly connected to the output shaft 4 in the form of splines. Lubricating oil is filled between the friction plate 5 and the steel plate 6.

[0030] A plurality of circumferentially arranged oil slinging holes 21 are provided on the outer circumference of the clutch housing 2. An oil return pool 11 is provided at the lower part on the outer side of the outer housing 10. An oil outlet 12 and an oil inlet 13 communicating with the oil return pool 11 are formed on the outer housing 10. The lubricating oil is slung out from the oil slinging holes 21 under the rotation of the clutch housing 2, and is affected by gravity along the gap between the clutch housing 1 and the outer housing 10, and enters the oil return pool 11 through the oil outlet 12, so as to cool the hot oil generated by the friction plate group and take away the heat inside the friction plate group.

[0031] One end of the clutch housing 2 close to the output shaft 4 is provided with a rear end cover 22. A plurality of oil nibbling holes 23 are formed on the rear end cover 22. The inner side of the oil nibbling holes 23 communicates with the friction plate group, and the outer side of the oil nibbling holes 23 communicates with the gap between the clutch housing 2 and the outer housing 10. The oil nibbling holes 23 generate suction under the rotation of the clutch housing 2, suck the cooled lubricating oil in the oil return pool 11 from the oil inlet 13 into the gap cavity between the clutch housing 2 and the outer housing 10, and further suck it into the friction plate group, forming a circulating flow of the lubricating oil, realizing an open lubrication system, so as to dissipate the heat inside the friction plate group.

[0032] In a preferred embodiment, an oil guiding cover 14 is installed opposite to the rear end cover 22. The oil guiding cover 14 is fixed on the inner wall of the outer housing 10. A turbine-type oil guiding vane 15 is provided on the side of the oil guiding cover 14 facing the rear end cover 22.

[0033] Wherein, the turbine-type oil guiding vane 15 includes a plurality of first oil guiding vanes 151 rotating in the same direction and a second oil guiding vane 152 with a direction opposite to that of the first oil guiding vanes 151. The oil outlet 12 is arranged on the outer housing 10 corresponding to the opening between the first oil guiding vanes 151 and the second oil guiding vane 152, which is convenient for the lubricating oil slung out from the oil slinging holes 21 to smoothly flow into the interior of the oil return pool 11 under the guiding of the second oil guiding vane 152.

[0034] In this embodiment, six evenly distributed oil nibbling holes 23 are formed on the rear end cover 22, which can suck the cooled lubricating oil into the friction plate group as much as possible. Six first oil guiding vanes 151 rotating in the same direction are fixed on the oil guiding cover 14. Due to its turbine-type vane structure in the same direction, it can smoothly guide the cooled lubricating oil into each oil nibbling hole 23, so that the cooled lubricating oil can uniformly and timely flow back into the friction plate group to timely supplement the slung-out lubricating oil.

[0035] Moreover, at least two rows of oil slinging holes 21 distributed axially are provided on the outer circumference of the clutch housing 2, and each row of oil slinging holes 21 further includes a plurality of oil slinging holes 21 evenly distributed circumferentially, which are used to sling out all the lubricating oil in the primary friction plate group 7 and the secondary friction plate group 8 in the friction plate group, so as to achieve a complete circulating flow of the lubricating oil inside the friction plate group.

[0036] In this embodiment, the oil slinging holes 21 adopt circular oil slinging holes, the oil nibbling port 23 adopts a sunken square hole structure, and the outer edge of the sunken square hole structure has a certain rotational slope, which is beneficial to better suck the lubricating oil into the friction plate group.

[0037] The working principle of the above-mentioned open lubrication system of the electromagnetic intelligent torque manager of the present invention is as follows: when the vehicle is running, the lubricating oil is slung out from inside the friction plate group by the centrifugal force formed by its own rotation, and the heat generated by the friction of the friction plate group is taken away in time; after the high-temperature oil liquid is slung out, under the action of gravity, it enters the oil return pool 11 through the oil outlet 12 along the gap between the clutch housing 2 and the outer housing 10 and waits to be cooled.

[0038] The oil nibbling port 23 rotates with the clutch housing 2 during the running of the vehicle, forming a certain suction force. Combined with the action of the oil guiding cover 14 opposite to the rear end cover 22, relying on the turbine-type oil guiding blades 15 on the oil guiding cover 14, the cooled lubricating oil can be quickly pressed back into the friction plate group to supplement the hot oil slung out by the centrifugal force, so as to continuously take away the heat generated by the friction plate, greatly improving the heat capacity of the product.

[0039] Effect embodiment

[0040] Under the same test conditions of a friction plate speed difference of 200 rpm and a friction plate transmitted torque of 800 Nm, various parameters of two products of the existing lubrication system and the open lubrication system of the present invention are compared, as well as the time required for the lubricating oil to reach 50 °C, 100 °C, and 130 °C. The comparison results are shown in Table 1 below.

[0041] Table 1 Comparison of various parameters between the existing lubrication system and the open lubrication system of the present invention

[0042]

[0043] As can be seen from Table 1 above, the open lubrication system of the electromagnetic intelligent torque manager of the present application can significantly improve the heat capacity of the product, enabling the whole vehicle to easily cope with various extreme driving conditions, and at the same time not reducing the product performance or even causing ablation.

[0044] The open lubrication system of the electromagnetic intelligent torque manager of the present invention enables the lubricating oil inside the friction plate group to be thrown out by centrifugal force through a plurality of oil throwing holes provided on the clutch housing, taking away the heat generated by the severe slipping of the friction plates. Also, by providing an oil biting port on the rear end cover, the cooled lubricating oil can be cyclically pressed into the friction plate group to quickly supplement the thrown out high-temperature lubricating oil, realizing the circulation of the lubricating oil, continuously taking away the heat generated by the friction plates, and supplementing it with the cooled lubricating oil, greatly improving the product heat capacity of the electromagnetic intelligent torque manager.

[0045] The open lubrication system of the electromagnetic intelligent torque manager of the present invention has a simple structure, without the drawbacks of various failure modes caused by complex structures, and can be widely applied to front-wheel drive SUVs to achieve four-wheel drive functions. Especially under certain extreme driving conditions, since the open lubrication system can effectively solve the large amount of high temperature generated by the friction plates in a short time, it ensures the durability of the product while providing the vehicle's extreme driving ability.

[0046] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0047] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0048] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Those skilled in the art can make some simple modifications, equivalent changes or decorations using the disclosed technical content above, and all fall within the protection scope of the present invention.

Claims

1. An open lubrication system for an intelligent torque manager, the intelligent torque manager comprising an input shaft, a clutch housing, a friction plate group, an output shaft and an outer housing, the friction plate group comprising friction plates and steel plates arranged in a spaced-apart combination, the input shaft, the clutch housing and the steel plates being rigidly connected, the friction plates being rigidly connected to the output shaft, and lubricating oil being filled between the friction plates and the steel plates, characterized in that, A plurality of oil slinging holes are provided on the outer circumference of the clutch housing. An oil return pool is provided at the lower part outside the outer housing. An oil outlet and an oil inlet communicating with the oil return pool are formed on the outer housing. The lubricating oil is slung out from the oil slinging holes under the rotation of the clutch housing, and under the action of gravity along the gap between the clutch housing and the outer housing, enters the oil return pool through the oil outlet; One end of the clutch housing close to the output shaft is provided with a rear end cover. A plurality of oil nibbling holes are formed on the rear end cover. The inner side of the oil nibbling holes communicates with the friction plate group, and the outer side of the oil nibbling holes communicates with the gap between the clutch housing and the outer housing. The oil nibbling holes generate suction under the rotation of the clutch housing, sucking the lubricating oil in the oil return pool from the oil inlet into the gap between the clutch housing and the outer housing, and entering the interior of the friction plate group to form a circulating flow of the lubricating oil, realizing heat dissipation; A oil guiding cover is installed opposite to the rear end cover. The oil guiding cover is fixed on the inner wall of the outer housing. The side of the oil guiding cover facing the rear end cover is provided with turbine-type oil guiding vanes. The turbine-type oil guiding vanes include a plurality of first oil guiding vanes rotating in the same direction and a second oil guiding vane with a direction opposite to that of the first oil guiding vanes. The oil outlet is arranged on the outer housing corresponding to the opening between the first oil guiding vanes and the second oil guiding vanes.

2. The open lubrication system of the intelligent torque manager according to claim 1, wherein, Six evenly distributed oil nibbling holes are formed on the rear end cover. Six first oil guiding vanes rotating in the same direction are fixed on the oil guiding cover.

3. The open lubrication system of the intelligent torque manager according to claim 1 or 2, characterized in that, At least two rows of axially distributed oil slinging holes are provided on the outer circumference of the clutch housing for slinging out the lubricating oil in the friction plate group.

4. The open lubrication system of the intelligent torque manager according to claim 3, characterized in that, The oil slinging holes adopt circular oil slinging holes.

5. The open lubrication system of the intelligent torque manager according to claim 1, characterized in that, The oil nibbling holes adopt a sunken square hole structure, and the outer edge of the sunken square hole structure has a certain rotational slope.

6. The open lubrication system of the intelligent torque manager according to claim 1, characterized in that, The intelligent torque manager adopts an electromagnetic intelligent torque manager.

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