KR970001994Y1 - Apparatus for supplying hydraulic fluid - Google Patents

Abstract

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Description

AN APPARATUS FOR SUPPLYING HYDRAULIC FLUID IN POWER TRANSMISSION MECHANISM BY USING A REVOLUTION SHAFT

1 is a schematic cross-sectional view of the hydraulic supply of the power transmission mechanism through a rotating shaft according to the present invention.

2 is an enlarged cross-sectional view of the portion A of FIG.

Figure 3 is a schematic cross-sectional view of the hydraulic supply of the power transmission mechanism through a conventional rotating shaft.

4 is an enlarged cross-sectional view of part B of FIG.

* Explanation of symbols for main parts of the drawings

1: housing 2: bearing

3: rotating shaft 4: hydraulic supply mechanism

5: Oil passage 6: Floating adapter

7: recessed groove 8: sealing

9: concave groove 10: 0-ring

11: gap 12: home

13: fixed case 14: support pin

15: gear

The present invention relates to a device for hydraulically interlocking a power transmission mechanism configured to transmit power through a rotating shaft, and in particular, when the rotating shaft is deformed by a load applied in a direction perpendicular to the shaft when the power is transmitted through the rotating shaft, It relates to a hydraulic supply device to prevent the leakage of pressure oil.

In general, there are various methods of transmitting power. Among them, the most common and commonly used method is that the power source is usually rotated, so that the rotational motion is changed to the linear motion of the bar or the transmission of motion. In order to change the angle, the rotation axis is generally used.

On the other hand, in a clutch for intermittent power transmission in a vehicle or the like, power is transmitted through a rotating shaft, and the clutch is interrupted by pressure oil supplied through the rotating shaft to transmit or block the supply of power.

In a power transmission mechanism having a structure such as a clutch having such a structure, when a radial load is applied to the rotation shaft on the power transmission side while the gears on the other driven side engaged with the rotation shaft are engaged, the rotation shaft is radially moved. As the displacement caused the abnormality in the supply path of the hydraulic oil to the hydraulic supply device which is installed in close proximity to the rotary shaft was a problem that the hydraulic oil leaks.

That is, to look at the problems as described above as the power transmission device of the transmission as shown in Figure 3, in general, the power transmission device of the transmission is a drive shaft (supported by the bearing 102 in the housing 101) Hydraulic pressure penetrated along the longitudinal direction of the hydraulic supply portion 105 and the rotary shaft 103 disposed at right angles to the rotary shaft 103 while transmitting rotational force from the 103 to the gear 104 provided on the rotary shaft 103. A pressure oil is supplied to a clutch (not shown) through the supply passage 106 to interrupt the clutch.

On the other hand, in the structure of the bar in order to prevent the leakage of the hydraulic oil supplied from the hydraulic supply unit 105 while the rotary shaft 103 is rotated between the hydraulic supply unit 105 and the rotary shaft 103 in general of the rotary shaft 103 The seal ring 108 is attached to the seal mounting groove 107 to closely close the rotating shaft 103 and the hydraulic supply unit 105 to rotate.

In a power transmission device such as a general transmission having such a structure, when a load is applied to the gear 104 in the radial direction of the rotation shaft 103, the rotation shaft 103 is displaced in the radial direction and the hydraulic pressure is applied to the rotation shaft 103. Friction occurs between the process case 109 of the supply portion 105, and this friction causes wear of the seal ring 108, and the wear of the seal ring 108 is caused by the rotation shaft 103 and the hydraulic supply portion. The high pressure oil will leak between the 105.

Therefore, as a means to solve this problem, it is common to place a gap 110 of a suitable size as shown in Figure 4 enlarged between the fixed case 109 and the rotating shaft 103 of the hydraulic supply unit 105. It was.

However, the size of the gap 110 as described above has a great influence on the transmission of the hydraulic pressure, that is, if the gap 110 is large, the amount of oil leaking through the excitation increases, and this also lowers the pressure. Therefore, not only the power loss is large, but also the pressure of the hydraulic oil for operating the clutch is insufficient to squeeze the clutch.

Further, in most cases, the gear 104 or the like is mounted on the rotary shaft 103, and when the rotary shaft 103 is driven, a force acts on the gear 104, so that the rotary shaft 103 inevitably displaces the displacement. Since the gap 110 is small, the rotating shaft 103 is in contact with the inner surface of the fixed case 109, which causes severe abrasion of the ring ring 108. In order to prevent such a phenomenon, the gap 110 as described above should be large, but in this case, as described above, the amount of leakage of oil increases and the pressure loss is large.

Therefore, the present invention solves the problems described above to provide sufficient clearance between the rotating shaft and the hydraulic supply unit to sufficiently absorb the displacement of the rotating shaft by the load applied to the power transmission rotating shaft. It is an object of the present invention to provide a hydraulic power supply device of the power transmission mechanism to reduce the leakage of the pressurized oil and thereby the pressure drop.

The present invention for achieving the above object, by installing a floating adapter between the drive transmission shaft for power transmission and the fixed case of the hydraulic supply unit for supplying the hydraulic pressure, so that the oil is tightly sealed between the floating adapter and the rotating shaft. The gap is small, and there is a sufficient clearance between the floating adapter and the fixed case, and a zero-ring is installed between the floating adapter and the fixed case to prevent leakage of oil, thereby reducing the pressure loss. have.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a portion of a transmission to which the apparatus according to the present invention is applied, and FIG. 2 is an enlarged cross-sectional view of a portion A of FIG. 1, and a rotating shaft (eg, a bearing shaft) is connected to the housing 1 of the transmission. 3) is installed, the oil supply passage (4) is installed at the end of the rotary shaft (3) and drilled in the longitudinal direction from the hydraulic supply mechanism (4) to the center of the rotary shaft (3) Pressure oil is to be supplied into the tank.

A floating adapter 6 is provided between the hydraulic pressure supply mechanism 4 and the rotary shaft 3, and a recessed groove provided in the rotary shaft 3 between the floating adapter 6 and the rotary shaft 3. 7) A seal ring 8 is provided in the inner part, and the 0-ring 10 is installed in the recess 9 formed in the adapter 6 between the floating adapter 6 and the hydraulic supply mechanism 4. It is.

In addition, there is little gap between the floating adapter 6 and the rotary shaft 3, and a sufficient gap 11 is formed between the floating adapter 6 and the hydraulic supply mechanism 4, When the displacement occurs in the radial direction in the process of transmitting power, the floating adapter 6 is angularly displaced with the rotating shaft 3 so that oil does not leak between the rotating shaft 3 and the floating adapter 6. On the other hand, since a sufficient clearance 11 is formed between the floating adapter 6 and the hydraulic supply mechanism 4, the floating adapter 6 is angularly displaced together with the rotating shaft 3 to the rotating shaft 3. It will be able to absorb the load applied.

In this way, a clearance 11 of a sufficient dimension is formed between the floating adapter 6 and the hydraulic pressure supply mechanism 4 so as to sufficiently absorb the angular displacement of the rotational shaft 3. 11) The 0-ring 10 should have sufficient elasticity so that the high pressure oil does not leak even if the floating adapter 6 is angularly displaced with respect to the hydraulic supply mechanism 4 within the allowable range. The elasticity of the 0-ring 10 makes the flow between the floating adapter 6 and the hydraulic supply mechanism 4 close and tight, while the elasticity of the 0-ring 10 causes the floating adapter 6 to be close. ) Is to be in close contact with the rotating shaft (3) so as not to leak the oil.

On the other hand, the groove 12 of a predetermined depth is formed at the next point along the circumferential direction of the rotary shaft 3, the radius of the groove 12 from the outside of the fixed case 13 of the hydraulic supply mechanism (4) The support pin 14 inserted in the direction is inserted, and the state in which the support pin 14 is coupled to the groove 12 is a loose fit, and the support pin 14 is freely radially free. While being able to move, the adapter 6 is prevented from moving along the axial direction and rotating along the rotation axis 3.

The device of the present invention, which has a structure as described above, is configured to transmit power to other mechanisms or components necessary through the gear 15 installed on the shaft 3 while the rotary shaft 3 rotates. When a load is applied to the rotating shaft 3 through the gear 15, the rotating shaft 3 is displaced at a predetermined angle. At this time, the floating adapter 6 and the rotating shaft 3 do not rotate together but the rotating shaft ( The frictional force is not generated between the floating adapter 6 and the rotational axis 3 while angularly displaced in accordance with the displacement angle of 3), and the 0-ring 10 according to the angular displacement of the floating adapter 6 While being compressed by its elasticity, it is possible to maintain the airtight enough to prevent oil from leaking between the hydraulic supply mechanism 4 and absorb the angular displacement of the rotary shaft 3.

In addition, the floating adapter 6 receives a force to move in the axial direction by friction with the rotation shaft 3 as the rotation shaft 3 rotates, and the support force is inserted into the groove 12. The floating adapter 6 is prevented from moving by being prevented by the pin 14.

Through the above operation process, the hydraulic actuating mechanism installed on the rotary shaft 3, for example, the pressure oil supplied to intermittently operate the clutch in the present invention is the oil passage of the rotary shaft 3 through the hydraulic supply mechanism 4 It is to be fed into (5) and then supplied to the necessary implement.

On the other hand, the relative movement of the rotating shaft 3 between the hydraulic supply mechanisms 4 does not cause a problem of the operator because the gap therebetween is to maintain the minimum gap required for rotation. Further, even if the rotation shaft 3 glides at a predetermined angle, no contact occurs between them, so that the wear of the seal ring 8 due to friction can be eliminated.

As described above, the device according to the present invention is smoothly rotated, but the floating adapter 6 and the 0-ring when the angular displacement occurs due to the radial load is applied to the rotary shaft (3) By absorbing this angular displacement (10) to prevent oil from leaking between the hydraulic supply mechanism (4) and the rotating shaft (3), the hydraulic pressure is not lowered so that power can be transmitted reliably.

Claims (1)

Power transmission means such as gears are installed on the drive rotary shaft 3, and pressure oil is supplied from the external hydraulic supply mechanism 4 to the oil passage 5 formed in the longitudinal direction of the rotary shaft 3 along the longitudinal direction. In the hydraulic power supply device of the power transmission mechanism using the rotating shaft to supply and regulate the power transmission, a floating adapter 6 is provided between the rotating shaft 3 and the hydraulic supply mechanism 4, and the floating adapter 6 ) And a gap 12 of sufficient magnitude is formed between the hydraulic supply mechanism 4 so as to absorb the angular displacement of the rotary shaft 3 by the load applied to the rotary shaft 3, and the floating adapter ( An elastic 0-ring 10 is installed between the 6) and the hydraulic pressure supply mechanism 4, and the floating adapter 6 is held in close contact with the rotating shaft 3 by the 0-ring 10. Hydraulic power supply of power transmission mechanism using a rotating shaft.