KR101748324B1 - Reducer with breaker and clutch - Google Patents

Reducer with breaker and clutch Download PDF

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Publication number
KR101748324B1
KR101748324B1 KR1020150182671A KR20150182671A KR101748324B1 KR 101748324 B1 KR101748324 B1 KR 101748324B1 KR 1020150182671 A KR1020150182671 A KR 1020150182671A KR 20150182671 A KR20150182671 A KR 20150182671A KR 101748324 B1 KR101748324 B1 KR 101748324B1
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KR
South Korea
Prior art keywords
gear
ring gear
housing
input shaft
clutch
Prior art date
Application number
KR1020150182671A
Other languages
Korean (ko)
Inventor
이상식
임종규
최상돈
배명호
Original Assignee
(주)부마씨이
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Priority to KR1020150182671A priority Critical patent/KR101748324B1/en
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Publication of KR101748324B1 publication Critical patent/KR101748324B1/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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/091—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears including a single countershaft

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)

Abstract

The present invention relates to a speed reducer, and more particularly to a speed reducer having a brake and a clutch and capable of decelerating at two speed ratios.
The speed reducer according to the present invention includes a housing, an input shaft, a first gear, a first ring gear, a plurality of first intermediate gears, a first output shaft, a power output means, a clutch means and a brake means. The input shaft is inserted into one side of the housing. The first gear is coupled to one end of the input shaft within the housing. The first ring gear is mounted inside the housing to enclose the first gear so as to rotate about the center axis of the first gear. The first intermediate gear is mounted inside the first ring gear so as to engage with the first ring gear and the first gear. One end of the first output shaft is engaged with the center axis of the first intermediate gear so as to rotate about the center axis of the input shaft. And the power output means is mounted inside the housing for shifting and outputting the rotational speed of the first output shaft at a constant speed. The clutch means may integrally couple the input shaft and the first intermediate gear. And the brake means can restrict the rotation of the first ring gear.
According to the present invention, the speed ratio of the speed reducer is changed in accordance with the operation of the brake and the clutch. Therefore, two speed ratios can be realized by simply operating the brake and the clutch.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a reducer with breaker and clutch,

The present invention relates to a speed reducer, and more particularly to a speed reducer having a brake and a clutch and capable of decelerating at two speed ratios.

In general, the reducer uses a worm and a worm gear or a planetary gear. Among them, when the worm and the worm gear are used, it is easy to adjust the reduction ratio, but the direction of power transmission is limited or the shifting is not easy. Therefore, planetary gear reducer is used for multi-step transmission.

A planetary gear reducer usually uses a sun gear, a ring gear, and a planetary gear to adjust the reduction ratio. At this time, the reducer requires two reduction ratios according to the use conditions. Therefore, in order to have two reduction ratios, conventionally, two reduction gears were required. However, in order to solve such a problem, a speed reducer capable of generating two speed ratios by one reduction gear has been developed.

However, the conventional speed reducer having the two reduction ratios has a problem in that it is difficult to apply the planetary gear reducer to the planetary gear reducer.

Registration No. 10-1221717 (registered on January 07, 2013) Open Patent No. 10-2015-0005555 (published on January 14, 2015)

The present invention is intended to solve the above problems. SUMMARY OF THE INVENTION It is an object of the present invention to provide a speed reducer capable of realizing two speed ratios with a simple structure by having a clutch and a brake.

The speed reducer according to the present invention includes a housing, an input shaft, a first gear, a first ring gear, a plurality of first intermediate gears, a first output shaft, a power output means, a clutch means and a brake means. The input shaft is inserted into one side of the housing. The first gear is coupled to one end of the input shaft within the housing. The first ring gear is mounted inside the housing to enclose the first gear so as to rotate about the center axis of the first gear. The first intermediate gear is mounted inside the first ring gear so as to engage with the first ring gear and the first gear. One end of the first output shaft is engaged with the center axis of the first intermediate gear so as to rotate about the center axis of the input shaft. And the power output means is mounted inside the housing for shifting and outputting the rotational speed of the first output shaft at a constant speed. The clutch means may integrally couple the input shaft and the first intermediate gear. And the brake means can restrict the rotation of the first ring gear.

In the above-described reducer, it is preferable that the clutch means includes a clutch, a pressing piece, and a first slider. The clutch is mounted to the input shaft so that one side thereof can contact the first intermediate gear to integrally join the input shaft and the first intermediate gear. The pressing piece is fixed so as to be rotatable integrally with the input shaft and is slidably mounted along the axial direction of the input shaft so as to press the clutch so as to be in contact with the first intermediate gear. The first slider is slidably mounted to the housing in the axial direction of the input shaft to slide the pressing piece. In this case, the housing has a first flow path for sliding the first slider in the axial direction of the input shaft.

In the above-described reducer, it is preferable that the first slider is rotatably supported by the pressing piece.

Further, in the above-described reducer, it is preferable that the brake means includes a brake and a second slider. The brake is located between the first ring gear and the housing to restrain the first ring gear to the housing. The second slider is slidably mounted to the housing so that the brake can press the brake to restrain the first ring gear. In this case, the housing further includes a second flow path for sliding the second slider in the axial direction of the input shaft.

Further, in the above-described speed reducer, it is preferable that the power output means includes a first power output section and a second power output section. The first power output section includes a second gear coupled to the other end of the first output shaft, a second ring gear surrounding the second gear and fixed to the housing, and a second ring gear coupled to the second ring gear and the second gear. A plurality of second intermediate gears mounted in the second ring gear and a second output shaft having one end coupled to a center axis of the second intermediate gear so as to be rotatable about a central axis of the first output shaft . The second power output unit includes a third gear coupled to the other end of the second output shaft, a third ring gear surrounding the third gear and fixed to the housing, and a second ring gear coupled to the third ring gear and the third gear, A plurality of third intermediate gears mounted inside the third ring gear and a third output shaft having one end coupled to the central axis of the third intermediate gear so as to be able to rotate about the central axis of the second output shaft And a second power output section.

According to the present invention, the speed ratio of the speed reducer is changed in accordance with the operation of the brake and the clutch. Therefore, two speed ratios can be realized by simply operating the brake and the clutch.

1 is a conceptual diagram of an embodiment of a speed reducer according to the present invention.

An embodiment of a speed reducer according to the present invention will be described with reference to FIG.

The speed reducer according to the present invention includes a housing 1, an input shaft 11, a first gear 13, a first ring gear 15, a first intermediate gear 17, a first output shaft 19, A clutch means 21, a brake means 23, and a power output means 30. As shown in Fig.

The housing 1 is provided with a first flow path 3 for moving the first slider 21c of the clutch means 21 and a second flow path 3b for moving the second slider 23b of the brake means 23, 5) are formed.

The input shaft (11) is inserted into one side of the housing (1).

The first gear 13 is coupled to one end of the input shaft 11 in the housing 1. The first ring gear 15 is mounted inside the housing 1 so as to surround the first gear 13 so as to rotate around the central axis of the first gear 13. The first intermediate gear 17 is mounted inside the first ring gear 15 so as to be engaged with the first ring gear 15 and the first gear 13. The first output shaft 19 is engaged with the center shaft of the first intermediate gear 17 so that the first output shaft 19 can rotate about the central axis of the input shaft 11. [ Thus, when the first intermediate gear 17 rotates about the central axis of the first gear 13, the first output shaft 19 rotates.

The clutch means 21 serves to integrally couple the input shaft 11 and the first intermediate gear 17 together. The input shaft 21 and the first intermediate gear 17 are engaged in accordance with the operation of the clutch means 21 so that the first intermediate gear 17 rotates integrally with the input shaft 21, The gear 17 is disengaged. To this end, the clutch means 21 includes a clutch 21a, a pressing piece 21b and a first slider 23c.

The clutch 21a is mounted on the input shaft 11 so that one side can contact the first intermediate gear 17 to integrally join the input shaft 11 and the first intermediate gear 17. [ That is, when the clutch 21a contacts the first intermediate gear 17, the input shaft 11 and the first intermediate gear 17 are engaged and integrally rotated. When the clutch 21a is released from the first intermediate gear 17, (11) and the first intermediate gear (17) separate and rotate separately. The pressing piece 21b is fixed so as to be integrally rotatable with the input shaft 21b so that the pressing piece 21b is engaged with the input shaft 11b so that the clutch 21a can be pressed to contact the clutch 21a and the first intermediate gear 17. [ And is slidably mounted along the axial direction. At this time, the pressing piece 21b is fixed to the input shaft 21b by the key 21d. The first slider 21c is slidably mounted to the housing 1 in the axial direction of the input shaft 11 so as to slide the pressing piece 21b. The first slider 21c is slid in the axial direction of the input shaft 11 by the hydraulic pressure supplied to the first flow path 3 formed in the housing 1. [ The first slider 21c is rotatably supported by the pressing piece 21b by a bearing. When the hydraulic pressure is supplied in one direction from the first flow path 3, the first slider 21c slides to move the pressing piece 21b toward the clutch 21a. Then, the clutch 21a is pressed by the pressing piece 21b to integrally restrain the input shaft 11 and the first intermediate gear 17. If the hydraulic pressure is supplied in the opposite direction from the first flow path 3, the first slider 21c slides in the opposite direction, and the clutch 21a is disengaged from the first intermediate gear 17. [

The brake means 23 serves to constrain the rotation of the first ring gear 15. [ That is, the first ring gear 15 is fixed by the brake means 23 without being rotated about the central axis of the first gear 13, or its restraint can be rotated about the central axis of the first gear 13 It is solved. To this end, the brake means 23 includes a brake 23a and a second slider 23b.

The brake 23a is positioned between the first ring gear 15 and the housing 1 so as to restrain the first ring gear 15 to the housing 1. [ The second slider 23b is slidably mounted to the housing 1 so that the brake 23a can press the brake 23a to restrain the first ring gear 15. [ At this time, the second slider 23b is slid in the axial direction of the input shaft 11 by the hydraulic pressure supplied to the second flow path 5 formed in the housing 1. Thus, when the hydraulic pressure is supplied in one direction from the second flow path 5, the second slider 23b slides and presses the brake 23a. Then, the first ring gear 15 is restrained by the housing 1 and the first ring gear 15 is fixed. However, when the hydraulic pressure is supplied in the opposite direction from the second flow path 5, the second slider 23b slides in the opposite direction, so that the first ring gear 15 is released from the restraint so that the first ring gear 15 can rotate .

The power output means 30 shifts the rotational speed of the first output shaft 19 at a constant speed and outputs the output.

In the present embodiment, the power output means 30 includes a first power output section 31 and a second power output section 41. [

The first power output section 31 includes a second gear 32, a second ring gear 34, a plurality of second intermediate gears 36, and a second output shaft 38.

The second gear 32 is coupled to the other end of the first output shaft 19. The second ring gear 34 is fixed to the housing 1 so as to enclose the second gear 32. The second intermediate gear 36 is mounted inside the second ring gear 34 so as to be engaged with the second ring gear 34 and the second gear 32. The second output shaft 38 is engaged with the central axis of the second intermediate gear 36 so that the second output shaft 38 can rotate around the central axis of the first output shaft 19. Thus, when the first output shaft 19 rotates, the second gear 32 rotates, whereby the second intermediate gear 36 rotates about the first output shaft 19 along the second gear 32. Then, the second output shaft 38 rotates. The rotational speed of the second output shaft 38 varies depending on the gear ratios of the second gear 32, the second ring gear 34, and the second intermediate gear 36.

The second power output section 41 includes a third gear 42, a third ring gear 44, a plurality of third intermediate gears 46, and a third output shaft 48.

The third gear 42 is coupled to the other end of the second output shaft 38. The third ring gear 44 is fixed to the housing 1 so as to surround the third gear 42. The third intermediate gear 46 is mounted inside the third ring gear 44 so as to be engaged with the third ring gear 44 and the third gear 42. The third output shaft 48 is engaged with the central axis of the third intermediate gear 46 so that the third output shaft 48 can rotate about the central axis of the second output shaft 38. [ Thus, when the second output shaft 38 rotates, the third gear 42 rotates, whereby the third intermediate gear 46 rotates about the second output shaft 38 along the third gear 42. Then, the third output shaft 48 rotates. The rotational speed of the third output shaft 48 varies depending on the gear ratio of the third gear 42, the third ring gear 44, and the fourth intermediate gear 46.

In this embodiment, the input shaft 11 rotates. At this time, the brake 23a is separated from the first ring gear 15 by the hydraulic pressure flowing into the first flow path 3 and the second flow path 5, and the clutch 21a contacts the first intermediate gear 17 . Then, the input shaft 11 and the first intermediate gear 17 rotate integrally. In this case, since the first ring gear 15 is not restrained by the brake 23, the first intermediate gear 17 can rotate integrally with the input shaft 11. Then, the first output shaft 19 rotates at the same speed as the input shaft 11. The rotational speed of the first output shaft 19 is reduced by a predetermined speed ratio and transmitted to the third output shaft 38 by the first power output unit 31 and the second power output unit 31. [

The brake 23a restrains the first ring gear 15 and the clutch 21a engages the first intermediate gear 17 and the second intermediate gear 17, . In this case, when the input shaft 11 rotates, the first intermediate gear 17 revolves about the input shaft 11 while rotating around the central axis between the input shaft 11 and the first ring gear 15. Since the first intermediate gear 17 revolves around the input shaft 11, the first output shaft 19 is rotated by the idle speed. When the first output shaft 19 rotates, the third output shaft 38 is decelerated and rotated at a constant speed ratio by the first power output section 31 and the second power output section 31.

Therefore, in the present embodiment, when the first ring gear 15 is unfastened by the brake 23a and the input shaft 11 and the first intermediate gear 15 are integrally rotated by the clutch 21a, the third output shaft 38 The third output shaft 38 is rotated at high speed and the first ring gear 15 is restrained by the brake 23a and the input shaft 11 and the first intermediate gear 15 are separated by the clutch 21a It rotates at low speed. Therefore, the speed reducer of this embodiment can have two speed ratios. Therefore, two gear ratio can be implemented with one reduction gear.

1: housing 3: first flow path
5: second flow path 11: input shaft
13: first gear 15: first ring gear
17: first intermediate gear 19: first output shaft
21: clutch means 21a: clutch
21b: pressure piece 21c: first slider
21d: key 23: brake means
23a: Brake 23b: Second slider
30: Power output means 31: First power output section
32: second gear 34: second ring gear
36: second intermediate gear 38: second output shaft
41: second power output section 42: third gear
44: third ring gear 46: third intermediate gear
48: third output shaft

Claims (5)

A housing,
An input shaft inserted into one side of the housing,
A first gear coupled to one end of the input shaft in the housing,
A first ring gear mounted inside the housing to surround the first gear so as to rotate about a center axis of the first gear,
A plurality of first intermediate gears mounted in the first ring gear so as to be engaged with the first ring gear and the first gear,
A first output shaft having one end coupled to a center axis of the first intermediate gear so as to be rotatable about a central axis of the input shaft,
Power output means mounted inside the housing for shifting and outputting the rotational speed of the first output shaft at a constant speed,
A clutch mounted on the input shaft so that one side thereof can be in contact with the first intermediate gear so as to integrally couple the input shaft and the first intermediate gear, and a clutch fixed to be rotatable integrally with the input shaft, And a sliding member which is slidably mounted along the axial direction of the input shaft so as to be able to be brought into contact with the first gear and which is rotatably supported by the pressing piece, Clutch means having a first slider mounted so as to be slidable in the axial direction of the clutch,
A brake located between the first ring gear and the housing for restraining the first ring gear to the housing and a brake for sliding the housing to press the brake to restrain the first ring gear, And a brake means having a second slider mounted so as to be movable,
Wherein the housing has a first flow path for sliding the first slider in the axial direction of the input shaft and a second flow path for slidably moving the second slider in the axial direction of the input shaft. The power output apparatus according to claim 1,
A second ring gear fixed to the housing to surround the second gear, and a second ring gear surrounding the second ring gear so as to be engaged with the second ring gear and the second gear, A first power output unit having a plurality of second intermediate gears mounted therein and a second output shaft whose one end is coupled to the central axis of the second intermediate gear so as to be rotatable about a central axis of the first output shaft; ,
A third ring gear fixed to the housing to surround the third gear, and a third ring gear surrounding the third ring gear to mesh with the third ring gear and the third gear, And a second power output section having a third output shaft whose one end is coupled with the central axis of the third intermediate gear so as to be able to rotate about the center axis of the second output shaft . delete delete delete
KR1020150182671A 2015-12-21 2015-12-21 Reducer with breaker and clutch KR101748324B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102279398B1 (en) 2020-04-03 2021-07-21 (주)유한이엔에스 Planetary decelerator easy to change output speed
KR20220064433A (en) 2020-11-11 2022-05-19 주식회사 유한이엔에스 Smart Winch with Free Fall Function
KR20230011536A (en) 2021-07-13 2023-01-25 주식회사 유한이엔에스 Planetary decelerator possible to change output mode in automatic manner
KR20230160976A (en) 2022-05-17 2023-11-27 주식회사 유한이엔에스 Planetary gear reducer capable of low relative deceleration ratio in two-speed automatic shift mode

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5024636A (en) 1989-06-27 1991-06-18 Fairfield Manufacturing Company, Inc. Planetary wheel hub
US5478290A (en) 1994-01-28 1995-12-26 Fairfield Manufacturing Co., Inc. Two speed high shift transmission
KR100250316B1 (en) 1996-08-30 2000-05-01 정몽규 Variable final reduction apparatus for a vehicle
KR101007069B1 (en) * 2008-12-30 2011-01-12 주식회사 효성 Gear box having double planetary gear system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5024636A (en) 1989-06-27 1991-06-18 Fairfield Manufacturing Company, Inc. Planetary wheel hub
US5478290A (en) 1994-01-28 1995-12-26 Fairfield Manufacturing Co., Inc. Two speed high shift transmission
KR100250316B1 (en) 1996-08-30 2000-05-01 정몽규 Variable final reduction apparatus for a vehicle
KR101007069B1 (en) * 2008-12-30 2011-01-12 주식회사 효성 Gear box having double planetary gear system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102279398B1 (en) 2020-04-03 2021-07-21 (주)유한이엔에스 Planetary decelerator easy to change output speed
KR20220064433A (en) 2020-11-11 2022-05-19 주식회사 유한이엔에스 Smart Winch with Free Fall Function
KR20230011536A (en) 2021-07-13 2023-01-25 주식회사 유한이엔에스 Planetary decelerator possible to change output mode in automatic manner
KR20230160976A (en) 2022-05-17 2023-11-27 주식회사 유한이엔에스 Planetary gear reducer capable of low relative deceleration ratio in two-speed automatic shift mode

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