KR0130036Y1 - Main shaft structure for a/t type - Google Patents

Abstract

By changing the passage structure of the supplied oil, it is possible to improve the workability and reduce the processing cost, and at the same time to eliminate the influence on the oil pressure by reducing the oil resistance, which is combined with the turbine of the torque converter. A first hole is formed in the input shaft to allow the oil supplied from the oil cooler to flow in, and second and third holes are formed to guide the oil to the clutch disc and the clutch drum, respectively. To inject the quill shaft coupled to the pump of the torque converter in the input shaft, but the space for guiding the flow of the supplied oil for supplying the oil for A / T formed between the input shaft and the quill shaft It is to provide a main shaft structure.

Description

Main shaft structure for supplying oil for A / T

1 is a cross-sectional view A / T showing an embodiment of the present invention.

Figure 2 is a partial cross-sectional view showing in detail the structure of the present invention.

3 is a partial cross-sectional view showing a conventional structure.

* Explanation of symbols for main parts of the drawings

2: housing 4: torque converter

6: pump 8: turbine

10: Stator 12: Input Shaft

14: quill shaft 16: first hole

18: second hole 20: third hole

24: space 26: fixed plate

28,36: Bearing 30: Sleeve

32,42: inlet hole 34: clutch drum

38: gear 39: discharge hole

40: boss 46: clutch disc

48: piston 50: return spring

52: oil pump 53: color

54: spacer

The present invention relates to a main shaft structure for supplying A / T (automatic transmission) oil used in forklifts, and in particular, the production cost according to processing by making the oil supplied in the A / T between the input shaft and the quill shaft The present invention relates to a main shaft structure for supplying oil for A / T, which makes it possible to realize a reduction and at the same time reduce the resistance generated during supply, thereby further improving the efficiency of the A / T.

In general, the oil supplied to the A / T is lubricated and cooled so that the bearings and clutches coupled to the inner shaft can be made smoother, and at the same time, the valve is installed in the valve body to shift the gears. Make this possible.

Conventionally, as shown in FIG. 3, the oil supplied from the oil cooler (not shown) may flow into the input shaft 102 coupled with the turbine of the torque converter in the housing constituting the A / T. Guide ball 106 is formed.

The first and second holes 108 and 110 through which the oil supplied from the oil cooler flows out are formed in the input shaft 102 while vertically penetrating the guide hole 106.

A clutch drum 112 is installed on the outer periphery of the input shaft 102 while engaging the bearing 114, and at the same time, a clutch plate 116 and a clutch disc 118 that provide frictional force to the clutch drum 112 are provided. It is imperative.

In the conventional means configured as described above, when the pump is rotated while the engine is operating, the turbine is rotated at the same time.

Thus, the input shaft 102 is rotated, wherein oil supplied from the oil cooler is supplied through the guide hole 106.

The oil supplied as described above flows out into the clutch drum 108 and the bearing 110 through the first and second holes 112 and 118, respectively.

The oil supplied in this way is supplied to the bearing 114 and the clutch disk 116 coupled to the inject shaft 102, respectively, and serves to cool the heat absorbed in the process of operating together with the lubrication.

The conventional means as described above, due to the need to process the first and second holes of the guide ball and the outflow passage in the inject shaft using a tool such as a drill, the difficulty is raised, and at the same time the processing cost increases have.

As another problem, there is a problem in that resistance is generated in the process of discharging the oil through the guide ball to the first and second holes to affect the oil pressure.

The present invention has been devised to solve the above problems, and its purpose is to change the passage structure of the supplied oil, thereby improving workability and lowering the processing cost, and at the same time reducing the oil resistance sent out to the oil pressure. It is to solve the impact.

In order to realize this, the present invention provides a first hole through which an oil supplied from an oil cooler is introduced into an input shaft coupled to a turbine of a torque converter, and the oil supplied is a clutch disc and a clutch drum. Second and third holes are respectively formed to guide the pumps to be supplied to the input shaft. A quill shaft coupled to the pump of the torque converter is installed in the input shaft, and the space is configured to guide the flow of oil supplied thereto. Form between the shaft and quill shaft.

In another aspect, the quill shaft is coupled to both sides of the quill shaft by using a component such as a collar, a spacer, a seal, and the like to prevent the oil from being supplied to the outside.

Hereinafter, described in detail by the accompanying drawings a preferred embodiment of the present invention as follows.

As shown in FIG. 1 and FIG. 2, the A / T is configured to automatically shift the power transmitted from the engine, while doubling the rotational force by using a fluid on one side of the housing 2 constituting the A / T. A torque converter 4 having a clutch function is provided.

The torque converter 4 includes a pump 6 configured to rotate by receiving power from an engine, a turbine 8 configured to transmit power while rotating by the pump 6, and a turbine with the pump 6. It is composed of a stator 10 positioned between (8) and changing the flow of the flow velocity and accelerating the rotational speed of the turbine (8). In addition, the inject shaft 12 is coupled to the turbine 8, and the quill shaft 14 is coupled to the pump 6.

In this case, a first hole 16 is formed in the input shaft 12 to guide the oil supplied by the pump 6 to flow therein, and is spaced apart from the first hole 16 by a predetermined distance. In position, second and third holes 18 and 20 are formed to guide the introduced oil to flow out, respectively.

In addition, a space 24 is formed between the input shaft 12 and the quill shaft 14 to serve as a passage for smoothly supplying the inflowing oil.

Along with this, a collar 53 is formed on one side of the quill shaft 14 to prevent oil leakage, and is in close contact with the inner surface of the input shaft 12 while being positioned outside the first hole 16.

In addition, the other side of the quill shaft 14 is coupled to the spacer 54 which is to prevent the oil outflow in close contact with the inner surface of the inject shaft (12).

Meanwhile, the input shaft 12 has a fixed plate 26 coupled to a bearing, and the fixed plate 26 is coupled to one side of the housing 2 constituting the A / T.

In addition, a sleeve 30 adapted to support the outside of the fixing plate 26 forms a coupling, one side is coupled to the torque converter 4, and the other side is coupled to the input shaft 12.

The inlet 32 is formed in the sleeve 30 to guide the oil supplied by the oil pump 52, and the inlet 32 is connected to the first hole 16.

Together with the fixing plate 26, the clutch drum 34 is rotatably coupled to the input shaft 12 while the bearing 36 is installed.

At this time, the second hole 18 formed in the input shaft 12 is located between the bearings 36 embedded in the clutch drum 34.

In the clutch drum 34, a clutch plate 44 and a clutch disc 46 are installed to intermittent the transmitted power.

In addition, a gear 38 configured to transmit power to one side of the clutch drum 34 forms a boss 40, and the boss 40 is coupled to the outer periphery of the input shaft 12, and the front end portion of the clutch is closed. The drum 34 is in close contact with one side.

At this time, the clutch plate 44 and the clutch disk 46 are coupled to the outer periphery of the boss 40 of the gear 38 so as to slide in the axial direction.

On one side of the gear 38, an inlet hole 42 through which oil supplied from an oil pump not shown is formed, and oil passing through the third hole 20 through the boss 40 is clutched. A discharge hole 39 is formed to guide the outflow between the plate 44 and the clutch disk 46.

At this time, the first hole 16 formed in the input shaft 12 is connected to the discharge hole 39.

On the other hand, a piston 48 is provided to provide a pressing force by the fluid supplied to the front of the clutch plate 44, the piston 48 is coupled to the boss 40 of the gear 38 to slide.

At the same time, the return spring 50 is provided in the piston 48 to provide a restoring force, but is in close contact with the front surface of the clutch plate 44.

Referring to the operation of the present invention configured as described above are as follows.

When the engine is first operated, the pump 6 coupled to the quill shaft 14 is rotated by the oil supplied from the oil pump 52 and the transmitted power.

The oil discharged to the front of the pump 6 is rotated in the turbine 8 and then flowed out to the stator 10, and at the same time the flow direction is changed while passing through the stator 10 is discharged in the rotation direction of the turbine (8).

The oil discharged as described above is discharged to an oil cooler (not shown) and cooled, and at the same time, flows through the inlet hole 32 formed in the sleeve 30 and into the first hole 16 formed in the input shaft 12. .

The oil passing through the first hole 16 flows into the space 24 formed between the input shaft 12 and the quill shaft 14.

The oil is discharged between the bearings 36 coupled to the clutch drum 34 through the second hole 18, and at the same time, the discharge is formed in the boss 40 of the gear 38 through the third hole 20. Passed through the ball 39 to the clutch plate 44 and the clutch disk 46.

At this time, the rotation of the bearing 36 of the oil supplied as described above is smoothly rotated, and also serves to absorb and cool the heat generated from the clutch plate 44 and the clutch disk 46. .

As described above, the oil introduced into the space 24 is prevented from leaking to the outside by the collar 53 formed on one side of the quill shaft 14 and the spacer 54 coupled to the other side.

As described above, the present invention can improve the workability and reduce the processing cost by changing the passage structure of the supplied oil, and also reduce the effect on the oil pressure by reducing the oil resistance sent out. have.

Claims (2)

In the input shaft 12 coupled to the turbine 8 constituting the torque converter 4, a first hole 16 is formed so that oil supplied from the oil cooler can flow in, and the oil is a clutch disc. In the input shaft 12, the second and third holes 18 and 20 are formed so as to be supplied to the bearing 36 coupled to the 46 and the clutch drum 34, respectively. The inlet shaft 12 and the quill shaft 14 are provided with a space 24 configured to guide the flow of the supplied oil while installing the quill shaft 14 coupled with the pump 6 constituting the converter 4. Main shaft structure for supplying oil for A / T, characterized in that formed between. The oil for A / T of claim 1, wherein both sides of the quill shaft 14 are combined by using components such as a collar 53, a spacer 54, a seal, and the like to prevent the supplied oil from flowing out. Main shaft structure for supplying power.