KR100911538B1 - Oil filter for transmission having an anti-noise structure - Google Patents

Abstract

The present invention is for a transmission having a noise prevention structure capable of preventing the occurrence of abnormal noise due to the air mixture can be prevented from entering the air bubbles in the oil pump even if bubbles are generated in the oil filter during high-speed long running of the hybrid vehicle. An oil filter, comprising: a filter member installed inside an oil pan storing oil to filter foreign substances in oil; and an oil filter for transmission in which filtered oil is supplied to an oil pump. The outer circumferential surface is formed in a rectangular shape toward the outside so that the oil stored in the pan is sucked out, but one side of the protruding outer circumference is inclined diagonally, and an oil suction part is formed at one side of the bottom surface, and a storage space for temporarily storing the oil sucked therein. A lower housing forming a; And a tube coupled to an upper portion of the lower housing and having an oil discharge port formed at an end of the tube and having an oil discharge port formed at an end of the tube to insert an O-ring. It is configured to include an upper housing to form a storage space, the interior of the upper housing is characterized in that the bubble blocking unit for blocking the concave portion of the inner space so that the air dissolved in the oil is not collected.

Hybrid vehicle, continuously variable transmission, oil filter, air mixing, abnormal noise

Description

Oil filter for transmission having an anti-noise structure {Oil filter for transmission having an anti-noise structure}

The present invention relates to an oil filter for a transmission having a noise prevention structure, and more particularly, to a noise prevention structure having an improved structure so as to prevent the occurrence of abnormal noise due to air mixing after a long time driving of a hybrid vehicle. It relates to an oil filter for a transmission having.

In general, the transmission is configured to pump and supply oil by the operation of an oil pump that is linked with the start of the engine. Oil is supplied to the torque converter to assist the operation of the torque converter, and is provided to the corresponding friction element of the planetary gear device through a flow path formed in the valve body. In addition, the oil is supplied to various operating parts of the planetary gear device to lubricate and cool the parts.

To this end, an oil pan for storing oil is provided at the bottom of the transmission, and an oil filter is installed inside the oil pan to remove foreign substances contained in the oil.

The conventional oil filter is joined to the circumference of the upper and lower cases, the filter member for filtering foreign matter in the inner space is installed. One side of the upper case is provided with a tube having a discharge port for supplying oil toward the oil pump at a predetermined height is inserted into the valve body, the O-ring is inserted into the discharge port. One side of the lower case is formed with an inlet through which the oil stored in the oil pan flows.

However, when such a conventional oil filter is installed in a hybrid vehicle, abnormal noise occurs when restarting after an auto stop or idle stop after a long driving.

This abnormal noise is caused by air mixing, and the air dissolves in the oil when driving for a long time. At this time, when the oil pump stops during the auto stop or idle stop, the air dissolved in the oil escapes and is trapped in the oil filter. When the collected air flows into the oil pump, it is compressed / expanded to generate an abnormal noise and lead to the vehicle acceleration acceleration (hesitation). Especially, in the case of the existing oil filter, there is a slope in the horizontal direction, so that the air in the oil filter easily escapes with the suction flow when the oil pump is operating, while there is no vertical slope (gradient), so that air is mixed with the air while driving. The air generated by the (aeration) flows into the oil pump in the space where the flow in the oil filter is stagnant and cannot be trapped. The trapped air causes abnormal noise and delayed acceleration of acceleration when the vehicle starts or accelerates after the auto stop or idle stop, thereby causing discomfort to the occupant and deteriorating driving performance.

An object of the present invention is to improve the structure of the transmission oil filter to prevent the occurrence of abnormal noise due to air mixing phenomenon after a long run of the hybrid vehicle, and to improve the oscillation acceleration delay phenomenon.

In order to achieve the above object, the present invention is installed in the oil pan in which the oil is stored is equipped with a filter member for filtering foreign substances in the oil, in the oil filter for the transmission oil is supplied to the oil pump, the oil filter, The filter has an outer circumferential surface protruding in a rectangular shape toward the outside so that the oil stored in the oil pan is sucked in, but one side of the protruding outer circumferential surface is inclined diagonally, and an oil suction part is formed on one side of the bottom surface, and the oil sucked inside is temporarily formed. A lower housing forming a storage space to be stored; And a tube coupled to an upper portion of the lower housing and forming an oil passage in an upper portion of the lower housing, and an oil outlet formed at an end of the tube to insert an O-ring, thereby temporarily storing oil sucked therein. It is configured to include an upper housing to form a storage space, and the inside of the upper housing to prevent noise generation, characterized in that the bubble blocking portion for blocking the concave portion of the inner space is installed so that air dissolved in oil is not collected An oil filter for a transmission having a structure is provided.

The tube is formed to a length that can prevent the bubbles separated from the oil from flowing into the oil pump, characterized in that the concave-convex structure is formed on the outer peripheral surface to guide the insertion position of the O-ring.

The lower housing may further include a plurality of support parts protruding from an inner bottom surface to support the filter member installed therein.

The lower housing may further include a support rubber made of at least one elastic material coupled to one side of the outer bottom surface to prevent shaking due to the flow of oil to suppress the generation of bubbles.

As described above, the transmission oil filter having a noise prevention structure according to an embodiment of the present invention can prevent the air bubbles from entering the oil pump even if air bubbles are generated inside the oil filter during high-speed long driving of the hybrid vehicle. The occurrence of abnormal noise due to air mixing can be prevented.

Hereinafter, an oil filter for a continuously variable transmission of a hybrid vehicle will be described as an embodiment of the present invention and will be described in detail with reference to the accompanying drawings.

When driving for a long time due to the characteristics of a hybrid vehicle, abnormal noise due to air aeration phenomenon occurs when the vehicle is re-started after auto stop or idle stop, compared to a conventional gasoline vehicle.

This is caused by the incorporation of air into the oil pump, where air is dissolved in the oil stored inside the oil pan and transported through the oil filter to the oil pump, or when the oil is sucked from the oil filter, the air is mixed into the oil pump. It is caused by inflow.

This air mixing not only causes abnormal noise when re-starting after auto stop or idle stop when driving for a long time, but also causes a problem of irregularly changing the pressure of oil. In order to solve this problem, the oil filter of the present invention is provided.

1 is a side view showing the oil filter of the present invention, Figure 2 is a rear view showing the oil filter of the present invention. Figure 3 is a perspective view showing the inside of the lower housing of the oil filter according to the present invention, Figure 4 is a perspective view showing the inside of the upper housing of the oil filter according to the present invention, Figure 5 is moved through the oil filter of the present invention A schematic diagram showing the flow of oil.

As shown in Figures 1 to 5 attached, the oil filter 400 of the present invention is installed inside the oil pan 100, the oil is stored for the operation and lubrication of the transmission, the lower housing 410 And the upper housing 420 are combined to form a storage space in which oil is temporarily stored, and a filter member 430 for filtering foreign substances in oil is installed in the formed storage space.

As shown in FIGS. 2 to 4, the lower housing 410 has a rectangular shape as a whole and has a partially curved shape corresponding to the internal shape of the oil pan 100. The outer bottom surface of the lower housing 410 is provided with an oil suction unit 412 for sucking the oil stored in the oil pan 100, and a support rubber 418 for preventing the flow of the oil filter 400. The inner bottom surface of the lower housing 410 is provided with a plurality of support portions 414 for supporting the filter member 430 inserted into the oil filter 400.

As illustrated in FIG. 2, the oil suction part 412 is formed in a rectangular shape and an outer circumferential surface protrudes outward from the bottom surface of the lower housing 410. In addition, the oil suction part 412 has a shape in which one side of the protruding outer circumferential surface is inclined diagonally, and the inclined outer circumferential surface is drawn toward the inside of the oil suction part 412.

The shape of the oil suction unit 412 may reduce the amount of bubbles generated in response to the flow direction or flow when the oil is sucked, as well as the air suction when the oil is introduced into the oil filter 400. Can be prevented from entering through 412.

The support rubber 418 is made of a material such as elastic silicone or rubber, and the oil filter 400 prevents bubbles from occurring due to the oil shaking while the oil filter 400 flows inside the oil pan 100. At least one support rubber 418 may be installed on an outer bottom surface of the lower housing 410, and a plurality of support rubbers 418 may be installed to support four sides of the lower housing 410 as necessary.

As shown in FIG. 3, the support part 414 is formed in plural on the inner bottom surface of the lower housing 410, and serves to support the filter member 430 so as not to flow.

As shown in FIG. 1, the upper housing 420 is formed in a shape corresponding to the shape of the lower housing 410, and is coupled to an upper portion of the lower housing 410, and an edge portion coupled to the lower housing 410 is joined. Are fixed to each other. The upper one side of the upper housing 420 is formed with a tube 422 and the oil discharge port 424 through which the oil is removed from the foreign matter passing through the filter member 430, the O-ring 426 outside the oil discharge port 424 ) Is inserted. In addition, the inside of the upper housing 420 is provided with a bubble blocking unit 416 to prevent the collection of bubbles.

1 and 4, the tube 422 is for connecting the valve body 200 and the oil filter 400, the length is increased than the conventional tube structure and the concave-convex structure is formed on the outer peripheral surface. This uneven structure is to hold the insertion position of the O-ring 426 to maintain the airtight by the O-ring 426, to compensate for the strength of the connection site.

In addition, although the length of the tube 422 is short, bubbles collected in the oil filter 400 are easily introduced into the valve body 200, but the length of the tube 422 is increased compared to that of the conventional tube 422. Bubbles collected in the is prevented from being delivered to the oil pump 300 through the valve body 200. Therefore, the length of the tube 422 is preferably formed to a length that can prevent the bubbles separated from the oil to enter the oil pump 300, this length is dependent on the size and the amount of bubbles generated oil filter 400, etc. It can be set differently at design time. The oil passing through the tube 422 is transferred to the oil pump 300 through the valve body 200 through the oil discharge port 424.

O-ring 426 is a structure that maintains the airtight when combined with the valve body 200, to prevent the oil inside the oil pan 100 that does not go through the oil filter 400 directly enters the valve body 200. The conventional O-ring 426 is made of a diameter of 19.5mm and a thickness of 2.5mm, the O-ring of the present invention is made of a diameter of 18.5mm and a thickness of 3mm. By reducing the diameter of the O-ring and increasing the thickness there is an effect to improve the airtightness.

As shown in FIG. 3, the bubble blocking unit 416 is installed inside the upper housing 420 and is installed to block an internal concave portion generated due to a partially curved shape of the upper housing 410. Since the curved portion is filled by the bubble blocking portion 416 made of the aluminum block, it is possible to prevent the bubbles that are dissolved in the oil from being collected in the concave portion, thereby reducing the noise generated by the oil pump.

Oil filter of the present invention having such a configuration can reduce and improve the noise caused by the air is mixed in the oil pump after the auto stop or idle stop after a long run, and furthermore, the pressure fluctuation of the oil occurs as the air inflow The phenomenon can be improved, thereby improving the driving performance of the hybrid vehicle.

In the hybrid vehicle equipped with the oil filter of the present invention, the flow of oil is briefly described as follows.

As shown in FIG. 4, when the oil pump 300 is driven according to the operation of the engine, oil stored in the oil pan 100 is stored through the oil inlet 412 formed in the lower housing 410. 400 is introduced inside.

At this time, since the shape of the oil suction part 412 is drawn inward, it is possible to prevent the mixing of air when the oil is sucked, thereby improving the abnormal noise due to the air mixing.

The oil introduced through the oil suction unit 412 is supplied to the oil pump 300 through the oil discharge port 424 through a tube formed in the upper housing 420 in a state in which foreign matter is filtered through the filter member 430. . The space in which the bubbles can be collected inside the oil filter 400 is blocked by the bubble blocking unit 416, and the length of the tube 422 serving as the oil transfer passage is long enough so that the air is oil filter 400. ), The phenomenon of mixing can be improved, so that abnormal noise caused by air mixing can be reduced.

Meanwhile, the present invention is not limited to the above-described embodiments, and any person having ordinary skill in the art to which the present invention pertains may make various modifications without departing from the gist of the present invention as claimed in the claims. Of course, such changes will fall within the scope of the claims set forth.

1 is a side view showing an oil filter of the present invention.

Figure 2 is a rear view showing the oil filter of the present invention.

Figure 3 is a perspective view showing the inside of the lower housing of the oil filter according to the present invention.

Figure 4 is a perspective view showing the inside of the upper housing of the oil filter according to the present invention.

Figure 5 is a schematic diagram showing the flow of oil moving through the oil filter of the present invention.

* Explanation of symbols for the main parts of the drawings

100: oil pan 200: valve body

300: oil pump 400: oil filter

410: lower housing 412: oil intake

414: support portion 416: bubble blocking portion

418: support rubber 420: upper housing

422 tube 424 oil outlet

426: O-ring 430: filter member

Claims (4)

In the oil filter 400 for the transmission, which is installed inside the oil pan 100 in which the oil is stored and filters the foreign matter in the oil, and the filtered oil is supplied to the oil pump 300. The oil filter 400, An outer circumferential surface protrudes in a rectangular shape toward the outside so that the oil stored in the oil pan 100 is sucked out, but one side of the protruding outer circumferential surface is inclined diagonally and an oil suction part 412 is formed on one side of the bottom surface, and sucked inside A lower housing 410 for forming a storage space in which the stored oil is temporarily stored; And A tube 422 coupled to an upper portion of the lower housing 410 and forming a flow path through which oil is discharged on an upper side thereof, and an oil discharge hole 424 formed at an end of the tube 422 to insert an O-ring 426. Is provided, and includes an upper housing 420 which forms a storage space for temporarily storing oil sucked therein, An oil filter for a transmission having a noise generating structure, characterized in that a bubble blocking portion 416 is provided inside the upper housing 420 to block a concave portion of an internal space so that air dissolved in oil is not collected. . The method of claim 1, The tube 422 is formed to a length that can prevent the air bubbles separated from the oil to be introduced into the oil pump 300, the uneven structure is formed on the outer peripheral surface to guide the insertion position of the O-ring 426 Oil filter for a transmission having a noise prevention structure, characterized in that. The method of claim 1, The lower housing 410 further includes a plurality of support parts 414 protruding from an inner bottom surface to support the filter member 430 installed therein. . The method of claim 1, The lower housing 410 is characterized in that it further comprises a support rubber 418 made of at least one elastic material coupled to one side of the outer bottom surface to prevent shaking due to the flow of oil to suppress the generation of bubbles Oil filter for gearbox with outbreak prevention structure.

Images