CN219388586U - Integrated CVT cooling system - Google Patents

Abstract

The utility model discloses an integrated CVT cooling system, which comprises an inner chamber, an outer chamber and a cooling air inlet for cooling air to enter the CVT; the inner chamber is used for sealing the cooling air inlet, and an inner air inlet for allowing cooling air to enter the inner chamber is formed in the inner chamber; the outer chamber is used for sealing the inner air inlet, and is provided with an outer air inlet for cooling air to enter the outer chamber; the air flow direction entering the outer chamber and the air flow direction entering the inner chamber are arranged at an angle; the utility model shortens the air inlet path, increases the air inflow of the air inlet, improves the air inlet efficiency, ensures that the cooling effect is more remarkable, and avoids the risk that foreign matters fall into the CVT chamber. The cooling effect is improved, the air intake quality is ensured, the service lives of the clutch and the belt are prolonged, and the quality and the reliability of the engine are improved; the utility model has simple structure, low assembly process difficulty and cost saving, and improves the convenience of after-sale maintenance.

Description

Integrated CVT cooling system

Technical Field

The utility model belongs to the technical field of gearboxes, and relates to an integrated CVT cooling system.

Background

The CVT, namely the continuously variable transmission, is a common vehicle transmission, the cooling structure of the CVT in the existing market is upper-side high-position air inlet, dust and foreign matters are easy to enter the air inlet, and abnormal abrasion of a clutch is easy to be caused by the entering of the foreign matters; the rainwater at the upper outer air inlet of the structure is easy to enter, and the rainwater enters the CVT cavity to easily cause slipping of the clutch; abnormal wear and clutch slip reduce the service lives of the clutch and the belt, affecting the reliability of the engine; the prior art JP6670335B 2-belt type continuously variable transmission for saddle type vehicles, although the position of the air intake port is changed, the cooling air is filtered by the action of centrifugal force, and the effect thereof is unstable.

In order to solve the above problems, improvements are required to be made to the existing cooling systems to prevent dust, foreign matter or rainwater from entering the transmission, and to improve the service lives of the clutch and the belt.

Disclosure of Invention

In view of this, the present utility model provides an integrated CVT cooling system, which effectively avoids the occurrence of foreign matters entering the clutch by providing two chambers and changing the direction of the cooling air flow, effectively prolongs the service lives of the clutch and the belt, and improves the reliability of the engine.

The utility model relates to an integrated CVT cooling system, which comprises an inner chamber, an outer chamber and a cooling air inlet for cooling air to enter the CVT; the inner chamber is used for sealing the cooling air inlet, and an inner air inlet for allowing cooling air to enter the inner chamber is formed in the inner chamber; the outer chamber is used for sealing the inner air inlet, and is provided with an outer air inlet for cooling air to enter the outer chamber; the direction of the air flow into the outer chamber is angled with respect to the direction of the air flow into the inner chamber. The internal chamber and the external chamber are arranged, so that cooling air can be prevented from directly entering the CVT chamber, the effect of filtering the cooling air can be achieved, meanwhile, the air flow direction of the cooling air entering the external chamber and the air flow direction entering the internal chamber are angled, the cooling air can be effectively prevented from directly entering the CVT chamber, the cooling air is filtered, and different angles can also produce different beneficial effects for preventing the cooling air from directly entering the CVT chamber.

Further, the inner air inlet is arranged in the inner chamber along the radial direction of the cooling air inlet, and the outer air inlet is arranged in the outer chamber along the axial direction of the cooling air inlet so that the air flow direction entering the outer chamber and the air flow direction entering the inner chamber are mutually perpendicular. In the case of mutually perpendicular, the cooling air must stay in the outer chamber after entering the outer chamber, and can enter the inner chamber, in which case the filtering effect for the cooling air is optimal.

Further, still include inner cover plate and outer cover plate, the inner cover plate is installed in predetermineeing the position and is covered the cooling air entry, the ventilation hole with cooling air entry intercommunication has been seted up to the inner cover plate, the outer cover plate extends along the direction of the inside apron of the axial of cooling air entry and forms the turn-ups, the outer cover plate is in the outer wall surface of inner cover plate with the mode lock of turn-ups towards the inside cover plate in order to form outer cavity, the periphery of ventilation hole extends along the direction of the outside apron of the axial of cooling air entry and forms the flange, the flange extends to the inner wall surface of outer cover plate in order to form the inner cavity. The outer cover plate forms an outer cavity through a flanging buckling mode, the inner cavity is sealed in the outer cavity, and the inner cavity forms a sealed space through abutting contact between the flange and the outer cover plate, so that the inner cavity has good sealing performance.

Further, the outer air inlet is integrally formed on the outer cover plate and is positioned at the upper part of the outer cover plate. The outer air inlet is arranged on the cover plate, so that impurities such as dust and rainwater can be better prevented from entering the whole cooling system compared with the existing high-level air inlet structure, the risk that the impurities fall into the CVT cavity is avoided, and the air inlet path is effectively shortened.

Further, the inner air inlets are arranged on the flange, the inner air inlets are arranged in a plurality, and the inner air inlets are uniformly distributed along the circumferential direction of the flange. The ventilation area can be effectively increased by the arrangement, the air inlet quantity is increased, and the cooling effect is improved.

Further, the cooling device also comprises a filter screen, wherein the filter screen is arranged at the position of the inner air inlet and is used for filtering cooling air entering the inner cavity. The filter screen can filter impurities in the air and water mist in the air, so that the cleanliness and the dryness of the CVT chamber are guaranteed.

Further, a seal ring for improving the sealability of the inner chamber is further included, and the seal ring is provided at a position between the cooling air inlet and the inner cover plate.

Further, the sealing device further comprises a sealing strip for improving the tightness of the outer cavity, and the sealing strip is arranged at the position where the flange is connected with the inner cover plate. The sealing strip ensures the tightness between the inner cover plate and the outer cover plate, namely, the honeybee box of the outer cavity is improved, and the cooling air is ensured not to run off when entering.

Further, the outer air inlet integrated into one piece is provided with the filtration grid. The filter grille can prevent large-volume sundries from entering the outer cavity, such as tree branches, leaves and the like.

Further, the cooling air inlet is arranged at a preset position, and the cooling air outlet is far away from the cooling air inlet and is arranged at the preset position. The preset position can be a crankcase end cover of the engine or other positions which can ensure that cooling air enters the CVT cavity for cooling and does not influence the running of the whole vehicle power system, and the specific position can be adjusted to different positions according to the engines with different structures and the gearbox, which is a technical method understood by those skilled in the art and is not repeated herein; the cooling air outlet is arranged far away from the cooling air inlet so as to ensure that the cooling air can cool the transmission to the greatest extent.

The utility model has the beneficial effects that:

the utility model discloses an integrated CVT cooling system, which effectively avoids the occurrence of the condition that foreign matters enter a clutch by arranging two chambers and changing the entering direction of cooling air flow, effectively prolongs the service lives of the clutch and a belt, and improves the reliability of an engine; the filter screen is arranged at the position of the inner air inlet to filter the cooling air entering the inner chamber, so that impurities in the air and water mist in the air can be effectively filtered, and the working environment of the clutch and the belt drying is ensured; the outer air inlet is arranged at the upper part of the outer high plate, so that the structure of the outer cover plate is simplified, the risk that foreign matters enter the CVT cavity is avoided, the space between the engine and the whole vehicle is increased, and an operation space is provided for maintenance on the whole vehicle in the later period; the integrated CVT cooling system shortens the air inlet path, increases the air inflow of the air inlet, improves the air inlet efficiency, has more remarkable cooling effect, and avoids the risk that foreign matters fall into a CVT chamber. The cooling effect is improved, the air intake quality is guaranteed, and the service lives of the clutch and the belt are prolonged. The quality and the reliability of the engine are improved. The integrated structure is simple, the assembly process difficulty is low, the cost is saved, and the convenience of after-sales maintenance is improved.

Drawings

FIG. 1 is a schematic exploded view of the structure of the present utility model;

FIG. 2 is a front view of the inner cover plate of the present utility model;

FIG. 3 is a rear view of the inner cover plate of the present utility model;

FIG. 4 is a schematic view of a mounting structure according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a cooling medium flow according to an embodiment of the present utility model.

Detailed Description

FIG. 1 is a schematic exploded view of the structure of the present utility model; FIG. 2 is a front view of the inner cover plate of the present utility model; FIG. 3 is a rear view of the inner cover plate of the present utility model; FIG. 4 is a schematic view of a mounting structure according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a cooling medium flow according to an embodiment of the present utility model. It should be noted that, in the description of the present specification, the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As shown, an integrated CVT cooling system includes an inner chamber, an outer chamber, and a cooling air inlet for cooling air to enter the CVT; the inner chamber is used for sealing the cooling air inlet, and an inner air inlet 103 for allowing cooling air to enter the inner chamber is arranged on the inner chamber; the outer chamber is used for sealing the inner air inlet 103, and is provided with an outer air inlet 201 for cooling air to enter the outer chamber; the direction of the air flow into the outer chamber is angled with respect to the direction of the air flow into the inner chamber. The inner air inlet 103 is disposed in the inner chamber along the radial direction of the cooling air inlet, and the outer air inlet 201 is disposed in the outer chamber along the axial direction of the cooling air inlet so that the air flow direction entering the outer chamber and the air flow direction entering the inner chamber are perpendicular to each other. The internal chamber and the external chamber are arranged, so that cooling air can be prevented from directly entering the CVT chamber, the effect of filtering the cooling air can be achieved, meanwhile, the air flow direction of the cooling air entering the external chamber and the air flow direction entering the internal chamber are angled, the cooling air can be effectively prevented from directly entering the CVT chamber, the cooling air is filtered, and different angles can also produce different beneficial effects for preventing the cooling air from directly entering the CVT chamber. When the direction of the air flow entering the outer chamber and the direction of the air flow entering the inner chamber are perpendicular to each other, the cooling air must stay in the outer chamber after entering the outer chamber, and the cooling air can enter the inner chamber, and in this case, the filtering effect on the cooling air is optimal.

In this embodiment, the cooling device further comprises an inner cover plate 1 and an outer cover plate 2, wherein the inner cover plate 1 is installed at a preset position and covers the cooling air inlet, and the preset position in this embodiment is a left crankcase cover; the inner cover plate 1 is provided with a vent hole 101 communicated with the cooling air inlet, the outer cover plate 2 extends to the direction of the inner cover plate 1 along the axial direction of the cooling air inlet to form a flanging, the outer cover plate 2 is buckled on the outer wall surface of the inner cover plate 1 in a mode that the flanging faces the inner cover plate 1 to form an outer cavity, the periphery of the vent hole 101 extends to the direction of the outer cover plate 2 along the axial direction of the cooling air inlet to form a flange 102, and the flange 102 extends to the inner wall surface of the outer cover plate 2 to form the inner cavity. The outer cover plate 2 forms an outer chamber in a flanging buckling mode, and the inner chamber is sealed in the outer chamber, and the inner chamber forms a sealed space through abutting contact between the flange 102 and the outer cover plate 2, so that the inner chamber has good sealing performance.

In this embodiment, the inner air inlet 103 is disposed on the flange 102, and a plurality of inner air inlets 103 are uniformly disposed along the circumferential direction of the flange 102. The number and the size of the inner air inlets 103 determine the ventilation area, namely the air inlet quantity, and the size and the number of the inner air inlets 103 can be selected according to the actual operation clearance so as to ensure the cooling effect; the embodiment also provides a filter screen 3 for filtering the cooling gas, wherein the filter screen 3 is arranged at the position of the inner air inlet 103 and is used for filtering the cooling air entering the inner chamber; the setting of filter screen 3 can filter impurity in the air and water smoke in the air, has guaranteed the cleanliness and the dryness of CVT cavity, and this embodiment adopts the filter screen of polyether 60PPI material, and is annular structure, and the installation can be accomplished to the flange is located to direct cover, and this material is with low costs and has the effect of adsorbing the water molecule, and air-purifying's effect is better, guarantees the cleanliness and the dryness of CVT cavity. Cooling air enters the outer chamber through the outer air inlet 201, passes through the filter screen 3 and is filtered, then enters the inner chamber through the inner air inlet 103, and the cooling air entering the inner chamber is sucked into the CVT chamber to cool the components such as the clutch.

In this embodiment, the outer air inlet 201 is integrally formed on the outer cover 2 and is located at the upper portion of the outer cover 2. The outer air inlet 201 is arranged on the cover plate, and compared with the existing high-level air inlet structure, the outer air inlet 201 of the embodiment can be larger, and the volume of the whole cooling system is not affected; meanwhile, the dust, rainwater and other impurities can be better prevented from entering the whole cooling system, the risk that the foreign matters fall into the CVT chamber is avoided, and the air inlet path is effectively shortened. The outer air inlet 201 of this embodiment is also integrally formed with a filter grill. The filter grille can prevent large-volume sundries from entering the outer cavity, such as tree branches, leaves and the like.

In the embodiment, a sealing ring 4 for improving the tightness of the inner chamber and a sealing strip 5 for improving the tightness of the outer chamber are also arranged, and the sealing ring 4 is arranged at a position between the cooling air inlet and the inner cover plate 1; the sealing strip 5 is arranged at the position where the flange is connected with the inner cover plate 1. The sealing strip 5 ensures the tightness between the inner cover plate 1 and the outer cover plate 2, namely improves the tightness of the outer chamber and ensures that the cooling air is not lost during the air intake.

In this embodiment, the cooling air inlet is disposed at a preset position, and the cooling air outlet is disposed at a preset position away from the cooling air inlet. The preset position can be a crankcase end cover of the engine or other positions which can ensure that cooling air enters the CVT cavity for cooling and does not influence the running of the whole vehicle power system, and the specific position can be adjusted to different positions according to the engines with different structures and the gearbox, which is a technical method understood by those skilled in the art and is not repeated herein; the cooling air outlet is arranged far away from the cooling air inlet so as to ensure that the cooling air can cool the transmission to the greatest extent. As shown in fig. 4, the cooling air inlet in the present embodiment is provided on the left crankcase cover 6 at a left side position, and the cooling air outlet is provided on the left crankcase cover 6 at a right side position. As shown in fig. 5, in operation, external cooling air enters the outer chamber through the outer air inlet 201 and forms a vortex shape in the outer chamber, impurities and water mist in the air are filtered through the filter screen 3, the cooling air flows through the driving disk in the clutch in an accelerating manner, the air is brought into the clutch driven belt part, and finally flows out through the air outlet of the left crankcase cover 6, and the whole CVT chamber is cooled. When impurities enter the outer chamber to influence operation, the filter screen 3 is directly replaced, and after-sales maintenance is simple and convenient.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims (10)

1. An integrated CVT cooling system, characterized by: comprises an inner chamber, an outer chamber and a cooling air inlet for cooling air to enter the CVT; the inner chamber is used for sealing the cooling air inlet, and an inner air inlet for cooling air to enter the inner chamber is formed in the inner chamber; the outer chamber is used for sealing the inner air inlet, and is provided with an outer air inlet for cooling air to enter the outer chamber; the direction of the air flow into the outer chamber is angled with respect to the direction of the air flow into the inner chamber.

2. The integrated CVT cooling system of claim 1, wherein: the inner air inlet is arranged in the inner chamber along the radial direction of the cooling air inlet, and the outer air inlet is arranged in the outer chamber along the axial direction of the cooling air inlet so that the air flow direction entering the outer chamber and the air flow direction entering the inner chamber are mutually perpendicular.

3. The integrated CVT cooling system of claim 1, wherein: still include inner cover plate and outer cover plate, the inner cover plate is installed in predetermineeing the position and is covered the cooling air inlet, the ventilation hole with cooling air inlet intercommunication has been seted up to the inner cover plate, the outer cover plate extends along the direction of the inside apron of axial of cooling air inlet and forms the turn-ups, the outer cover plate with the mode lock of turn-ups towards the inside apron in the outer wall of inner cover plate in order to form outer cavity, the periphery in ventilation hole extends along the direction of the outside apron of axial of cooling air inlet and forms the flange, the flange extends to the inner wall of outer cover plate in order to form inner cavity.

4. An integrated CVT cooling system as in claim 3, wherein: the outer air inlet is integrally formed in the outer cover plate and located at the upper part of the outer cover plate.

5. An integrated CVT cooling system as in claim 3, wherein: the inner air inlets are arranged in the flange, a plurality of inner air inlets are arranged, and the inner air inlets are uniformly distributed along the circumferential direction of the flange.

6. The integrated CVT cooling system of claim 1, wherein: the cooling air filter further comprises a filter screen, wherein the filter screen is arranged at the position of the inner air inlet and used for filtering cooling air entering the inner cavity.

7. The integrated CVT cooling system of claim 1, wherein: the inner cover plate is provided with a cooling air inlet and an inner cover plate, and the cooling air inlet is provided with a sealing ring for improving the tightness of the inner chamber.

8. An integrated CVT cooling system as in claim 3, wherein: the sealing device is characterized by further comprising a sealing strip for improving the tightness of the outer cavity, wherein the sealing strip is arranged at the position where the flanging is connected with the inner cover plate.

9. The integrated CVT cooling system of claim 1, wherein: the outer air inlet is integrally formed and provided with a filtering grid.

10. The integrated CVT cooling system of claim 1, wherein: the cooling air inlet is arranged at a preset position, and the cooling air outlet is far away from the cooling air inlet and is arranged at the preset position.