KR101262130B1 - Planetary gear apparatus - Google Patents

Planetary gear apparatus Download PDF

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Publication number
KR101262130B1
KR101262130B1 KR1020100119497A KR20100119497A KR101262130B1 KR 101262130 B1 KR101262130 B1 KR 101262130B1 KR 1020100119497 A KR1020100119497 A KR 1020100119497A KR 20100119497 A KR20100119497 A KR 20100119497A KR 101262130 B1 KR101262130 B1 KR 101262130B1
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KR
South Korea
Prior art keywords
pinion shaft
oil
guide
carrier
shaft
Prior art date
Application number
KR1020100119497A
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Korean (ko)
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KR20120057930A (en
Inventor
김연규
Original Assignee
현대 파워텍 주식회사
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Priority to KR1020100119497A priority Critical patent/KR101262130B1/en
Publication of KR20120057930A publication Critical patent/KR20120057930A/en
Application granted granted Critical
Publication of KR101262130B1 publication Critical patent/KR101262130B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0479—Gears or bearings on planet carriers

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

Disclosed is a planetary gear device. The disclosed planetary gear device includes: a carrier on which an input shaft supplied with oil is installed, a pinion shaft installed on a carrier along a circumference of the input shaft, a one-way clutch supporting one side of the pinion shaft and rotating only in one direction; It is installed on the other side of the pinion shaft opposite to the one-way clutch, and is provided on the oil guide and the oil guide to guide the movement of oil from the input shaft to the pinion shaft, and the fixing portion restrains the axial movement and rotation of the pinion shaft. Characterized in that.

Description

Planetary gear device {PLANETARY GEAR APPARATUS}

The present invention relates to a planetary gear device, and more particularly to a planetary gear device that can restrain the movement of the pinion shaft while reinforcing the structural rigidity of the carrier.

In general, the automatic transmission has a function of transmitting the driving force of the engine to the drive wheels. The automatic transmission transmits the driving force of the engine at various speeds through the planetary gears to the driving wheels. The planetary gears are usually connected to one sun gear and the outer circumference of the sun gear and connected to the carrier. It comprises a plurality of pinion gear and the ring gear disposed on the outermost.

The planetary gear apparatus also includes a bearing installed between the pinion gear and the pinion shaft for smooth rotation of the pinion gear, which is a high speed rotating element.

In addition, the pinion shaft has an oil passage formed therein while being mounted on the cross section of the carrier, and an oil guide having a space portion corresponding to the oil passage of the pinion shaft is installed on the carrier.

With the above structure, the oil subjected to centrifugal force in the space portion of the oil guide cools and lubricates the bearing through the oil passage of the pinion shaft.

The pinion shaft is installed so that rotation and axial movement is constrained to the carrier. For this purpose, a pin hole is machined into the carrier and the pinion shaft, and a pin member is inserted into the fill hole.

The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

Since pinholes are formed in the carrier to reduce structural rigidity, cracks may occur in the carrier, thereby deteriorating durability, and work processes for inserting the pin member into the pinholes increase, thereby decreasing productivity. Therefore, there is a need to improve this.

The present invention has been made by the necessity as described above, and an object thereof is to provide a planetary gear device capable of restraining the axial movement and rotation of the pinion shaft without pinhole processing in the carrier and the pinion shaft.

The planetary gear device according to the present invention includes: a carrier on which an input shaft to which oil is supplied is installed, a pinion shaft installed on a carrier along the circumference of the input shaft, and a one-way rotating only in one direction while supporting one side of the pinion shaft. It is installed on the other side of the clutch and the pinion shaft opposite to the one-way clutch, and is provided on the oil guide and the oil guide to guide the movement of oil from the input shaft to the pinion shaft, thereby restraining the axial movement and rotation of the pinion shaft. Include the government.

In addition, the pinion shaft preferably includes a first end that is in contact with the oil guide and a second end that extends in the direction of the fixing part and forms a step with the first end.

In addition, the oil guide preferably includes a guide body formed along the outer circumference of the fixing part and bent from the guide body and in contact with the mounting side of the carrier.

In addition, the bent portion is preferably pressed into the mounting groove provided on the mounting side surface is fixed.

The fixing part may include a first guide member which is bent in a direction in which the second end is extended from the guide body and contacts the end side of the second end, and a second guide member which is bent from the first guide member and spaced apart from the second end. It is desirable to.

In the planetary gear device according to the present invention, since the axial movement and rotation of the pinion shaft are constrained by the one-way clutch and the oil guide fixing part without pinhole processing of the carrier, the structural rigidity of the carrier can be increased to improve durability. In addition, the assembly process can be shortened to improve productivity.

1 is a cross-sectional view schematically showing a planetary gear device according to an embodiment of the present invention.
Figure 2 is a cross-sectional view showing a state in which the pinion shaft and the oil guide is separated according to an embodiment of the present invention.
Figure 3 is a perspective view showing a state in which the pinion shaft and the oil guide is separated according to an embodiment of the present invention.
4 is a cross-sectional view showing a state before the bent portion of the oil guide is coupled to the mounting groove of the carrier according to an embodiment of the present invention.
Figure 5 is a cross-sectional view showing a state in which the bent portion of the oil guide coupled to the mounting groove of the carrier according to an embodiment of the present invention.

Hereinafter, an embodiment of the planetary gear device according to the present invention will be described with reference to the accompanying drawings. For convenience of explanation, the planetary gear device used in the automatic transmission will be described as an example. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a cross-sectional view schematically showing a planetary gear device according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing a state in which the pinion shaft and the oil guide is separated according to an embodiment of the present invention, Figure 3 Is a perspective view showing a state in which the pinion shaft and the oil guide are separated according to an embodiment of the present invention, Figure 4 is a state before the bent portion of the oil guide coupled to the mounting groove of the carrier according to an embodiment of the present invention 5 is a cross-sectional view showing a state in which the bent portion of the oil guide is coupled to the mounting groove of the carrier according to an embodiment of the present invention.

1 to 5, the planetary gear device 1 according to an embodiment of the present invention, the carrier 10 is installed, the input shaft 20, the input shaft 20 is supplied with oil, the input shaft 20 A pinion shaft 30 installed on the carrier 10 along a circumference of the pinion shaft, one way clutch 40 supporting one side of the pinion shaft 30 and rotating only in one direction, and a circle. It is installed on the other side of the pinion shaft (30) facing the clutch (40) and the oil guide (50) and the oil guide (50) for guiding the movement of the oil from the input shaft (20) to the pinion shaft (30) It is provided with a fixing portion 60 for restraining the movement and rotation of the pinion shaft 30 in the axial direction (see Fig. 1 horizontal direction).

The input shaft 20 is connected to the engine to transmit power of the engine (not shown). The input shaft 20 is installed at approximately the center of the planetary gear device 1 according to the present embodiment, and the sun gear 70 is installed at the outer side of the input shaft 20 about the input shaft 20. Since the structure and operation of the sun gear 70 will be apparent to those skilled in the art, a detailed description thereof will be omitted.

In addition, an oil passage 22 connected to the hydraulic system (not shown) is formed inside the input shaft 20. The input shaft 20 is supplied with oil from the hydraulic system through the oil passage 22. Such oil includes lubricating oil for cooling and lubricating the planetary gear device 1.

The oil supplied to the oil passage 22 through the hydraulic system is moved along the carrier 10 through the oil passage 22 and moved in the direction of the pinion shaft 30.

An input shaft 20 to which oil is supplied is installed on the carrier 10, and the pinion shaft 30 is installed on the carrier 10 along the circumference of the input shaft 20.

The pinion shaft 30 is installed outside the input shaft 20. The pinion shaft 30 may be provided in plural along the outside of the input shaft 20. The pinion gear 72 is rotatably installed around the pinion shaft 30 so as to be engaged with the sun gear 70 on the outside of the pinion shaft 30.

A ring gear 76 is installed outside the pinion gear 72 and rotates in engagement with the pinion gear 72.

A bearing 74 is installed between the pinion shaft 30 and the pinion gear 72 to induce smooth rotation. An oil passage 38 for supplying oil to the bearing 74 is formed inside the pinion shaft 30.

The pinion shaft 30 is formed in a circular rod shape, one side of the pinion shaft 30 (hereinafter referred to as Fig. 1 left) is in contact with the one-way clutch 40, the axial movement is constrained, the other side of the pinion shaft 30 (Hereinafter, reference right in FIG. 1) is constrained by the oil guide 50 to constrain axial movement and rotation.

The oil passage 38 formed inside the pinion shaft 30 has an opening formed in the other direction, and on the other side of the pinion shaft 30, the first end 32 and the first end supported in contact with the oil guide 50 are provided. A second end portion 34 extending from the end portion 32 and extending in the direction of the fixing portion 60 (the right side of FIG. 1) is formed.

The first end 32 is in contact with the guide body 52 of the oil guide 50 is restrained in the axial movement of the pinion shaft 30, the end connecting the first end 32 and the second end 34 Side 36 is in contact with the fixing portion 60 of the oil guide 50 is constrained to rotate the pinion shaft (30).

The one-way clutch 40 supporting one side of the pinion shaft 30 and being rotated only in one direction serves to structurally restrain the rotational movement in one direction when the inner and outer rotational bodies make relative rotational movements.

By using the principle of the one-way clutch 40, the one-way clutch 40 is used in the automatic transmission for the purpose of ensuring smooth shifting quality, such as stopping the element that rotates in the first speed at the second speed.

Since the one-way clutch 40 extends in the direction in which the pinion shaft 30 is installed and contacts one side of the pinion shaft 30, the axial movement toward one side of the pinion shaft 30 is constrained.

Detailed structure and operation state of the Wenway clutch will be apparent to those skilled in the art, so a detailed description thereof will be omitted.

The other side of the pinion shaft 30 restrains rotation and axial movement while contacting the oil guide 50.

The oil guide 50 is installed on the other side of the pinion shaft 30 facing the one-way clutch 40, and in the technical concept of guiding the movement of oil moved from the input shaft 20 to the pinion shaft 30. It can be formed in various shapes.

The oil guide 50 according to one embodiment is formed along the outer circumference of the fixing part 60 and is bent from the guide body 52 and the guide body 52 to be in contact with the first end 32. And a bent portion 54 abutting the mounting side 12 of the < RTI ID = 0.0 >) < / RTI >

Since the bent portion 54 is press-fitted into the mounting groove portion 14 provided on the mounting side surface 12, a part of the bent portion 54 is inserted into the mounting groove portion 14.

Since the bent portion 54 is inserted into and fixed to the mounting groove 14, the oil guide 50 is fixed to the carrier 10.

The fixing part 60 provided in the oil guide 50 is bent in a direction in which the second end portion 34 extends from the guide body 52 to contact the end side surface 36 of the second end portion 34. And a second guide member 64 that is bent from the guide member 62 and the first guide member 62 and spaced apart from the second end 34.

The first end 32 of the pinion shaft 30 is restrained in axial movement in contact with the guide body 52, and the end side 36 is in contact with the first guide member 62 so that the rotation of the pinion shaft 30 is prevented. Is constrained.

The oil moved along the second guide member 64 of the oil guide 50 is moved to the inside of the pinion shaft 30 along the oil passage 38 provided at the second end 34 to the bearing 74. Supplied.

Hereinafter, with reference to the accompanying drawings will be described in detail the operating state of the planetary gear device 1 according to an embodiment of the present invention.

Since one side of the pinion shaft 30 contacts the one-way clutch 40 and the first end 32 provided on the other side of the pinion shaft 30 contacts the guide body 52, the axial direction of the pinion shaft 30 Movement is constrained.

Since the end side 36 of the pinion shaft 30 is in contact with the first guide member 62 of the fixing portion 60, the rotation of the pinion shaft 30 is constrained.

The pinion shaft 30 in the state in which the axial movement and rotation are constrained is fixedly installed on the carrier 10, and the oil supplied through the input shaft 20 is used to guide the second guide member 64 of the oil guide 50. Moved along the oil passage 38 provided in the second end 34 is moved to the bearing 74.

According to the configuration as described above, the planetary gear device 1 according to an embodiment, the pinion by the one-way clutch 40 and the fixing portion 60 of the oil guide 50 without the pinhole processing of the carrier 10 Since the shaft's axial movement and rotation are constrained, the structural rigidity of the carrier 10 can be increased to improve durability, and the assembly process can be shortened to improve productivity.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

In addition, the planetary gear device used in the automatic transmission has been described as an example, but this is merely exemplary, and the planetary gear device of the present invention may be used in other kinds of mechanical devices.

Accordingly, the true scope of protection of the present invention should be defined by the claims.

1: Planetary Gear 10: Carrier
12: mounting side 14: mounting groove
20: input shaft 22: oil euro
30: pinion shaft 32: first end
34: second end 36: end side
38: Oil passage 40: One-way clutch
50: oil guide 52: guide body
54: bend portion 60: fixed portion
62: first guide member 64: second guide member
70: Sun Gear 72: Pinion Gear
74: bearing 76: ring gear

Claims (5)

A carrier on which an input shaft to which oil is supplied is installed;
A pinion shaft installed on the carrier along a circumference of the input shaft;
A one-way clutch supporting one side of the pinion shaft and rotating only in one direction;
An oil guide installed at the other side of the pinion shaft opposite to the one-way clutch and guiding movement of oil moved from the input shaft to the pinion shaft; And
It is provided in the oil guide includes a fixing portion for restraining the axial movement and rotation of the pinion shaft,
The pinion shaft may include a first end supported in contact with the oil guide; And
It comprises a second end extending in the direction of the fixing portion and forming a step with the first end,
The oil guide is formed along the outer periphery of the fixing portion, the guide body in contact with the first end; And
It is bent from the guide body and includes a bent portion in contact with the mounting side of the carrier,
The fixing part may include: a first guide member bent in a direction in which the second end portion extends from the guide body to be in contact with an end side surface of the second end portion; And
And a second guide member which is bent from the first guide member and spaced apart from the second end.
delete delete The method of claim 1, wherein the bent portion,
Planetary gear device, characterized in that the pressing groove is fixed to the mounting groove provided on the mounting side. delete
KR1020100119497A 2010-11-29 2010-11-29 Planetary gear apparatus KR101262130B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100119497A KR101262130B1 (en) 2010-11-29 2010-11-29 Planetary gear apparatus

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Application Number Priority Date Filing Date Title
KR1020100119497A KR101262130B1 (en) 2010-11-29 2010-11-29 Planetary gear apparatus

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KR20120057930A KR20120057930A (en) 2012-06-07
KR101262130B1 true KR101262130B1 (en) 2013-05-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022206686A1 (en) 2022-06-30 2024-01-04 Zf Friedrichshafen Ag Oil supply arrangement for a transmission component

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140076316A (en) * 2012-12-12 2014-06-20 한국파워트레인 주식회사 Torque converter for vehicle
KR101655632B1 (en) * 2014-12-31 2016-09-22 현대 파워텍 주식회사 Automatic transmission of vehicle increasing lubricating oil flow to clutch

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000046159A (en) * 1998-07-27 2000-02-18 Daihatsu Motor Co Ltd Planetary gear device
JP2009108891A (en) * 2007-10-29 2009-05-21 Fuji Heavy Ind Ltd Pinion shaft mounting structure of planetary gear mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000046159A (en) * 1998-07-27 2000-02-18 Daihatsu Motor Co Ltd Planetary gear device
JP2009108891A (en) * 2007-10-29 2009-05-21 Fuji Heavy Ind Ltd Pinion shaft mounting structure of planetary gear mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022206686A1 (en) 2022-06-30 2024-01-04 Zf Friedrichshafen Ag Oil supply arrangement for a transmission component

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