KR200483658Y1 - Pump plate for auto mission case - Google Patents

Abstract

In consideration of this point, the present invention is configured such that sufficient oil can be supplied to the inner and outer circumferential surfaces of the bush for use as a clutch when the clutch is mounted on a fixed shaft and rotatably supported, thereby improving the lubrication and cooling effect of the bush And it is an object of the present invention to provide a pump plate of an automatic transmission case which can prevent the bushing from sticking to the clutch or the fixed shaft even when the clutch is operated frequently.
Particularly, in the present invention, since the lubricating oil can be supplied by connecting the holes formed in the fixed shaft and the holes formed in the outer periphery of the bushing to each other for oil supply respectively, it is possible to increase the residence time, The pump plate of the automatic transmission case which enables the cooling and lubrication effect of the automatic transmission case to be further enhanced.

Description

PUMP PLATE FOR AUTO MISSION CASE OF AUTOMATIC TRANSMISSION CASE

The present invention relates to a pump plate of an automatic transmission case, and more particularly, to a pump plate having a through hole formed in a fixed shaft for rotatably supporting the clutch, and a bush for pivotally supporting the clutch, So that the lubricating oil supplied through the fixed shaft can be supplied to the inner periphery and the outer periphery of the bush, respectively, thereby enhancing the lubrication and cooling effect. Particularly, by increasing the residence time and staying space of the lubricating oil through the oil passage, .

As shown in Fig. 1, the automatic transmission T is connected to the engine E and transmits the generated power to the wheels. In particular, the automatic transmission T refers to a transmission in which gears are automatically operated according to the changing vehicle speed. The automatic transmission (T) can be divided into a torque converter and a planetary gear, or a combination of a fluid clutch and a planetary gear. Further, the automatic transmission is provided with an oil pump for obtaining a necessary lubricating oil pressure for the control, lubrication and the like necessary therein. The following Patent Documents 1 to 3 disclose techniques relating to such oil pumps.

(Patent Document 1) Korean Patent No. 1221742 (Registered on March 31, 2013)

In order to improve the performance of the oil pump by reducing the noise and pulsation due to the flow of the lubricant by changing the shape including the angle between the ports of the suction port and the discharge port of the conventional oil pump, And to provide a lubricating oil gear pump for a transmission.

(Patent Document 2) Korean Patent No. 1468356 (Registered on Apr. 26, 2014)

A guide formed on the side wall constituting the suction port and the discharge port respectively formed in the housing and the cover constituting the lubricating oil gear pump, and in particular, the guide is formed by covering the rim portion of the rotor to prevent the lubricating oil from permeating between the pressure chamber and the rotor , And a lubricating oil gear pump for an automatic transmission capable of increasing the flow rate discharged from a lubricating oil gear pump to improve the volume efficiency

(Patent Document 3) Korean Patent Laid-Open No. 10-2015-0111069 (Registered on May 10, 2015)

The present invention relates to an oil pump housing for an automatic transmission in which a driving gear and a driven gear which are mounted on the rear end of an automatic transmission and accommodate a driving gear and a driven gear which are in contact with each other and which are in contact with each other, And a hub hole through which a driving hub connected to the drive gear passes is formed in the oil pump housing. The oil pump housing for an automatic transmission includes a hub formed in the oil pump housing, The inner wall of the ball is provided with a lubricant seal mounting portion having an outer diameter support surface for supporting the outer diameter surface of the lubricant oil seal and an inner support surface formed on the inner side of the outer diameter support surface for supporting the inner surface of the lubricant oil seal, The lubricating oil seal mounting portion is provided at its inlet portion with a diameter The lubricating oil seal is elastically press-fitted into the lubricating oil seal mounting portion through the inlet portion. The lubricating oil seal is fixed to the lubricating oil seal mounting portion by a claw formed in the inlet portion of the lubricating oil seal mounting portion, So that it is possible to prevent the oil from being separated from the hydraulic oil generated in the pump chamber.

On the other hand, a conventional oil pump is usually mounted on a pump plate and rotatably mounted as the input shaft rotates. The pump plate is manufactured in the form of a plate for finishing all or a part of the front side of the automatic transmission as shown in Figs. 2 to 4, an oil pump is provided on one side, and a fixed shaft 50 is provided on the other side. The clutch C is rotatably mounted. In the figure, reference numeral 70 denotes a retainer.

The clutch C is installed to be rotatable around the fixed shaft 50 via a bush 60 mounted on the fixed shaft 50. The clutch C is mounted on the fixed shaft 50, And a lubricating oil is supplied to the inner periphery of the bushing 60 by forming a hole 51 so as to perform a lubricating action.

However, conventional bushes do not cool the clutch sufficiently because of the following problems.

(1) Normally, at least one hole is formed in the fixed shaft to supply lubricant supplied from the outside to the inner periphery of the bush.

(2) In particular, since the bush is rotatably supported while rotating together with the rotation of the clutch, a frictional action is generated in the inner periphery and the outer periphery thereof, but the lubrication and cooling action between the bush and the clutch smoothly Is not achieved.

(3) Since cooling and lubrication are not smoothly performed at a portion where the bush and the clutch are in contact with each other, a phenomenon of sticking to each other occurs.

(4) Such a phenomenon may not lead to smooth operation of the clutch, so that an accurate shift operation of the automatic transmission may not be performed, leading to a safety accident.

Korean Registered Patent No. 1221742 (Registered on March 31, 2013) Korean Registered Patent No. 1468356 (Registered on Nov. 26, 2014) Korean Patent Publication No. 10-2015-0111069 (Registered on May 10, 2015)

In consideration of this point, the present invention is configured such that sufficient oil can be supplied to the inner and outer circumferential surfaces of the bush for use as a clutch when the clutch is mounted on a fixed shaft and is supported for rotation, thereby enhancing the lubrication and cooling effect of the bush And it is an object of the present invention to provide a pump plate of an automatic transmission case which can prevent the bushing from sticking to the clutch or the fixed shaft even when the clutch is operated frequently.

Particularly, in the present invention, since the lubricating oil can be supplied by connecting the holes formed in the fixed shaft and the holes formed in the outer periphery of the bushing to each other for oil supply respectively, it is possible to increase the residence time, The pump plate of the automatic transmission case which enables the cooling and lubrication effect of the automatic transmission case to be further enhanced.

In order to achieve the above object, the pump plate of the automatic transmission case according to the present invention is mounted on an automatic transmission case, and an oil pump is driven and supported on one surface of the pump plate, and a clutch C The pump shaft of the automatic transmission case includes a fixed shaft (100) rotatably supporting the fixed shaft (100), wherein the fixed shaft (100) is provided with at least two And a first flow path 102 is formed between neighboring first through holes 101 to connect the first flow path 101 and the first flow path 101. The bush 110 is connected to the first flow path 102 through the first flow path 101, Two second holes 111 are formed and a second flow path 112 is formed between adjacent second holes 111 on the outer periphery of the second holes 111.

Particularly, the first flow path 102 and the second flow path 112 are each formed in a ring shape so as to connect the holes.

The first through hole 101 and the first flow path 102 are formed on the outer circumference of the fixed shaft 100 along a circumference and the second through hole 111 and the second flow path 112 form a bush 110 in the circumferential direction.

The pump plate of the automatic transmission case according to the present invention has the following effects.

(1) Since lubricating oil is supplied to both the inner circumference and the outer circumference of the bush, it is possible to prevent the bush, which mediates the rotation support of the clutch that is rotatably supported on the fixed shaft, from sticking due to lack of lubrication and cooling.

(2) In particular, since the lubricating oil is supplied by connecting the holes for supplying lubricating oil through the oil passage, the lubricating oil serves as a gallery for supplying lubricating oil, thereby enabling a sufficient amount of lubricating oil to be supplied as well as increasing the residence time, The effect can be further enhanced.

(3) The foreign matter is sandwiched between the rolling surfaces and sticks or sticks to the rolling surfaces to prevent damage to the rolling surfaces, thereby enhancing durability.

(4) The structure is simple and can be easily manufactured and used.

(5) When manufacturing the bushes, it is necessary to fabricate the holes and the flow path together. Thus, it is possible to prevent the sticking phenomenon by simple design change.

1 is a bottom view for showing an example of a vehicle equipped with a conventional automatic transmission case;
2 is a schematic view for schematically showing an internal configuration of a conventional automatic transmission case;
FIG. 3 is a perspective view for showing a coupling state of a fixed shaft for driving a pump to a conventional pump plate; FIG.
FIG. 4 is a cross-sectional view showing a state of engagement of a fixed shaft for driving a pump on a conventional pump plate.
FIG. 5 is a perspective view for showing a coupling state of a fixed shaft for driving a pump on a pump plate according to the present invention; FIG.
FIG. 6 is a sectional view for showing a state of engagement of a fixed shaft for driving a pump on a pump plate according to the present invention; FIG.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, and the inventor shall appropriately define the concept of the term in order to best describe its own design It should be construed as meaning and concept consistent with the technical idea of this invention.

Therefore, the embodiments shown in the drawings and the drawings are only exemplary embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents And variations may be present.

(Configuration)

The pump plate of the automatic transmission case according to the present invention is mounted on the inner periphery and the outer periphery of the bush 110 which is mounted on the fixed shaft 100 and rotatably supports the clutch C as shown in Fig. 5 and Fig. 6 So that the supplied lubricating oil can stay for a long time, so that the entire bushing 100 can be uniformly cooled and lubricated.

Particularly, in the present invention, while increasing the amount of lubricant supplied by connecting the holes 101 and 111 formed in the fixed shaft 100 and the bush 110 through the oil passages 102 and 112, Allowing the received lubricant to stay in this closed curve for as long as possible to further enhance its cooling and lubrication effects.

In the present invention, since the oil passage and the oil hole are formed along the circumference of the fixed shaft 100 and the bush 110, lubricant can be smoothly supplied along the rotational direction of the bush 110, And lubricating oil can be smoothly supplied to the entire outer circumferential surface.

Hereinafter, this configuration will be described in more detail. Here, the pump plate 200 is a plate for mounting the oil pump, and a fixed shaft 100 for mounting the oil pump on one side and rotating the clutch C on the other side is mounted. A bush 110 is mounted on the fixed shaft 100 so as to rotate and support the clutch C.

The fixed shaft 100 is fixed to the pump plate 200 as shown in Fig. 5 and Fig. 6, and the bush 110 is inserted and fitted to rotate and support the clutch C.

At this time, the fixed shaft 100 is configured to be supplied with lubricating oil from the outside through a lubricating line (not shown) formed in the longitudinal direction of the shaft. The lubricating line is formed by bushing 110, At least two first holes (101) are formed. The first hole 101 serves to supply the lubricant supplied through the lubricating line to the inner circumference of the bush 110.

Meanwhile, in a preferred embodiment of the present invention, the first shaft 102 formed as described above is connected to the fixed shaft 110 through the first holes 101 thus formed. The first flow path 102 supplies lubricant between the stationary shaft 110 and the bush 110 to sufficiently cool and lubricate the inner circumferential surface of the bush 110, The width and the width are preferably formed to have a width and a depth that can supply lubricant to the outer circumference of the bush 110 through the second hole 111 to be described later.

Also, in a preferred embodiment of the present invention, it is preferable that the first through holes 101 and the first flow path 102 are connected to each other to form a closed curve shape. This increases the residence time of the lubricating oil staying in the first oil passage 102 through the first oil hole 101 and increases the cooling and lubrication effect of the bush 110. In particular, It is preferable that the bush 110 is put on the first and second flow passages 101 and 102 so that the lubrication contact area between the lubricant and the bush 110 is increased to further enhance the lubrication and cooling effect Do.

The bush 110 refers to a structure for mounting the clutch C between the fixed shaft 100 and the clutch C to rotate and support the clutch C as shown in Fig. 5 and Fig. 6.

In particular, as shown in FIGS. 5 and 6, the bush 110 forms at least two second holes 111 on the outer circumferential surface. The second hole 111 is formed to overlap with the first hole 101 and the first flow path 102 when the bush 110 is inserted and fixed to the fixed shaft 100, 101 and the first flow path 102 can be supplied to the outer periphery of the bush 110 as well.

5 and 6, the bush 110 may connect the two second holes 111 adjacent to the outer circumferential surface of the bush 110 to each other through the second flow path 112. This is to secure a sufficient amount of lubricant through the second flow path 112 and to increase the residence time to increase the cooling and lubrication effect.

The second through holes 111 and the second through holes 112 formed in the bush 110 may be formed in the shape of a closed curve such as the first through holes 101 and the first through holes 102, It is preferable that the lubricating and cooling effect is uniformly provided over the entire outer periphery of the bush 110 by forming along the circumferential circumference.

In the figure, a reference numeral 120 denotes a retainer.

As described above, according to the present invention, the lubricating oil can be supplied to both sides of the bush, which rotatably supports the clutch, so that the structure is simple and the lubrication and cooling effect of the bushes are enhanced, thereby preventing the phenomenon of sticking.

100: Fixed axis
101: 1st hole
102: First Euro
110: Bush
111: 2nd hole
112:
120: retainer

Claims (3)

The automatic transmission case is mounted on an automatic transmission case and includes a fixed shaft 100 for driving and supporting an oil pump on one side and a clutch C for supporting the clutch C via a bush 110 on the other side, As a result,
At least two first holes (101) are formed in the fixing shaft (100) so that the fluid supplied through the fixing shaft (100) can be supplied to the inner peripheral surface of the bush (110) One flow path 102 is formed and connected to each other,
At least two second holes 111 are formed in the bush 110 so as to communicate with the first flow path 102 and a second flow path 112 is formed between neighboring second holes 111 on the outer circumference of the bush 110. And the pump plate of the automatic transmission case.
The method according to claim 1,
Wherein the first flow path (102) and the second flow path (112) are formed in a ring shape so as to connect the through holes.
3. The method according to claim 1 or 2,
The first hole (101) and the first flow path (102) are formed along the circumference of the fixed shaft (100)
Wherein the second through hole (111) and the second flow path (112) are formed along the circumference of the bush (110) along the circumference.

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