WO2008023965A1 - Conical gear member for power transmission - Google Patents
Conical gear member for power transmission Download PDFInfo
- Publication number
- WO2008023965A1 WO2008023965A1 PCT/KR2007/004093 KR2007004093W WO2008023965A1 WO 2008023965 A1 WO2008023965 A1 WO 2008023965A1 KR 2007004093 W KR2007004093 W KR 2007004093W WO 2008023965 A1 WO2008023965 A1 WO 2008023965A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cone
- gear
- shaped
- teeth
- concave roller
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 20
- 238000005299 abrasion Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 3
- 240000008042 Zea mays Species 0.000 abstract 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 abstract 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 abstract 1
- 235000005822 corn Nutrition 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/10—Constructively simple tooth shapes, e.g. shaped as pins, as balls
-
- 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
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
-
- 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
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/24—Toothed gearings for conveying rotary motion without gears having orbital motion involving gears essentially having intermeshing elements other than involute or cycloidal teeth
Definitions
- the present invention relates to a cone-shaped toothed gear member for power transmission and more particularly, the present invention relates to a cone-shaped gear member(a cast iron gear member) for power transmission which is capable of transmitting power accurately and reducing friction by acting based on rolling friction by comprising cone-shaped gears being constructed in one side and roller gears having a roller gear to go in the cone-shaped gear placed parallel, vertical, or tilted to the roller gears.
- a cone-shaped gear member(a cast iron gear member) for power transmission which is capable of transmitting power accurately and reducing friction by acting based on rolling friction by comprising cone-shaped gears being constructed in one side and roller gears having a roller gear to go in the cone-shaped gear placed parallel, vertical, or tilted to the roller gears.
- the power transmission is generally accomplished by gears which are various according to shape and arrangement of their teeth and each gear can be grouped to applied variously.
- helical gear having teeth wired with a curvature in where two shafts are arranged parallel to each other to transmit rotation power and double helical gear formed by joining two helical gear having teeth wired to opposite direction to one shaft.
- the present inventors have made the present invention in view of the above problems, and accordingly, it is an object of the present invention to provide the cone- shaped gear member for power transmission which is capable of transmitting power accurately and reducing friction by acting based on rolling friction by comprising cone-shaped gears being constructed in one side and roller gears having a roller gear to go in the cone-shaped gear placed parallel, vertical, or tilted to the roller gears.
- the another object of the present invention is to provide the cone-shaped gear member for power transmission capable of reducing friction loss, extremely enhancing an efficiency without energy loss and reducing abrasion and noise by friction to prolong the life span of the machine in power transmission.
- gear member for power transmission which comprises: a) a cone-shaped gear comprising a circular disk part and a plurality of cone-shaped gear teeth positioned along the verges of the circular disk and tilted outward at an cone-shaped curve, where tooth grooves with a curvature are formed between the gear teeth; and b) a concave roller gears comprising a plurality of concave roller teeth arranged at an interval to engage perpendicularly with the gear teeth of the cone-shaped gear and a multistage circular disk part tilting to a central shaft tube at an angle, which multistage circular disk part is formed by assembling and fixing upper and lower ends of shaft pins in the concave roller teeth.
- the present invention can be used in a autocycle, a bicycle and various kinds of industrial machines or insruments and thus it is expected to apply to all kind of industrial machines which transmit power with reducing energy loss.
- concave roller teeth lead to rolling friction when they engage with cone-shaped gear teeth, thereby abrasion and noise decrease.
- the gear member according the present invention differently from the conventional gears,in which round incidence angle of concave roller teeth is contacted to cone-shaped teeth, has a flexiblity without regard to contacting angle and is good in efficiency of power transmission thereby it is useful invention in fundamental parts industry.
- Fig. 1 is a perspective view of a cone-shaped gear member for power transmission according to the present invention
- Fig. 2 is a cross section of A-A in the Fig. 1.
- Fig. 1 is a perspective view of a cone-shaped gear member for power transmission according to the present invention and Fig. 2 is a cross section of A-A in the Fig. 1.
- a cone-shaped gear member for power transmission 2 comprises of a cone-shaped gear 4 and concave roller gears 6.
- a cone-shaped gear 4 comprises a circular disk 10 on which hollow tube 8 is mounted and a plurality of cone-shaped gear teeth 12 being positioned along the verges of the circular disk 10, tilting prependical of 90 ° to outward and having tooth grooves 14 with a curvature formed between the gear teeth 12.
- the hollow tube 8 is positioned at the center of the circular disk 10 for connecting with a length of shaft.
- the area of the circular disk 10 aren't limited and enough if they are proposed in a design.
- the cone-shaped gear teeth 12 are arranged at an interval making it possible to engage with a concave roller gear teeth 16 most suitably.
- the curvature of the tooth grooves 14 formed between the cone-shaped gear teeth 12 matches with the outside diameter of the concave roller teeth 16.
- a concave roller gear 6 comprises a plurality of concave roller teeth 16 arranged at a interval, tilting to shaft axis L to engage with the cone-shaped gear teeth 12 of the cone-shaped gear 4 and a multistage circular disk part 22 tilting pararell to shaft tube 20, which is formed by assembling and fixing upper and lower ends of shaft pins 18 in the concave roller teeth 16.
- the gear member 2 can realize various rotation velocities by modifying rotation ratio caused by increasing and decreasing either the number of concave roller teeth 16 of the concave roller gear 6 or the number of cone-shaped gear teeth 12 of the cone-shaped gear 4.
- the cone-shaped gear member of power transmission according to the present invention can gently trasmit the power with less energy loss incomparatably better than that of the prior power transmission method since it can fully drive by closely contacting teeth grooves 14 with concave roller teeth 16 without fixed incidence angle between the smooth face in the round circular solid curve of teeth groove 14 of cone- shaped gear 4 and concave roller teeth 16 of concave roller gear 6.
- a gear member according to the present invention can transmit power without loss when it is used for shafts arranged with various mode such as crossed and connected, thereby the gear member can be applied variously to such as a bicycle and a engine.
- roller teeth lead to rolling friction when they engage with gear teeth of a cone-shaped gear, thereby abrasion and noise decrease.
- the gear member according the present invention comprising one or more roller gears on one side differently from the conventional gears, can be used for machine demanding silence, thereby it is useful invention in fundamental parts industry.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
- Gears, Cams (AREA)
Abstract
The present invention relates to a cone-shaped gear member, in which a toothed gear is shaped of cone having curvature of an exponential curve or imbullit curve. The corresponding toothed gear having the shape of concave roller is driven by contacting with the cone-shaped toothed gear, affording to room for the contact angle between cone-shaped toothed gear axis and toothed gear axis of concave roller. In transmitting the power, unlike a bevel gear in which two toothed gears are coupled and closely contacted with constant angle in the form of the face contact, the cone-shaped gear and the concave roller gear are contacted with each other in the form of the point contact between spherical surface of corn and concave face and thus there is little friction loss, little abrasion and little noise. The present invention is to embody the power transmission with the driving process of the cone-shaped gear and the concave roller gear without energy loss and defects in contact driving method of bebel gears.
Description
Description
CONICAL GEAR MEMBER FOR POWER TRANSMISSION
Technical Field
[1] The present invention relates to a cone-shaped toothed gear member for power transmission and more particularly, the present invention relates to a cone-shaped gear member(a cast iron gear member) for power transmission which is capable of transmitting power accurately and reducing friction by acting based on rolling friction by comprising cone-shaped gears being constructed in one side and roller gears having a roller gear to go in the cone-shaped gear placed parallel, vertical, or tilted to the roller gears. Background Art
[2] The power transmission is generally accomplished by gears which are various according to shape and arrangement of their teeth and each gear can be grouped to applied variously.
[3] For example, there are helical gear having teeth wired with a curvature, in where two shafts are arranged parallel to each other to transmit rotation power and double helical gear formed by joining two helical gear having teeth wired to opposite direction to one shaft.
[4] In addition, there are bebel gear comprising screw gear, hypoid gear and worm gear used in case of transmitting rotation power by two shafts crossed.
[5] The above conventional gears have problems that abrasion and noise occur due to contact friction caused when their teeth engage with each other and rotate.
[6] When the conventional gears are used, there are some problems such as error occurrence by abrasion and energy loss in power transmitting.
[7] In addition, a pin toothed bebel gear disclosed in "A pin toothed gear and bebel gear" by ARTOBOLEVSKY(The Instrument section in The collections of General modern machine design, pages 2589-2591, 5.8.1984.) incurs a large energy loss by contacting teeth surfaces of pinch and teeth surfaces of bebel gear and is necessary to fix an incidence angle between two toothed gears regularly. Disclosure of Invention
Technical Problem
[8] The present inventors have made the present invention in view of the above problems, and accordingly, it is an object of the present invention to provide the cone- shaped gear member for power transmission which is capable of transmitting power accurately and reducing friction by acting based on rolling friction by comprising cone-shaped gears being constructed in one side and roller gears having a roller gear to
go in the cone-shaped gear placed parallel, vertical, or tilted to the roller gears.
[9] The another object of the present invention is to provide the cone-shaped gear member for power transmission capable of reducing friction loss, extremely enhancing an efficiency without energy loss and reducing abrasion and noise by friction to prolong the life span of the machine in power transmission. Technical Solution
[10] To achieve the object, the present inventors provide gear member for power transmission which comprises: a) a cone-shaped gear comprising a circular disk part and a plurality of cone-shaped gear teeth positioned along the verges of the circular disk and tilted outward at an cone-shaped curve, where tooth grooves with a curvature are formed between the gear teeth; and b) a concave roller gears comprising a plurality of concave roller teeth arranged at an interval to engage perpendicularly with the gear teeth of the cone-shaped gear and a multistage circular disk part tilting to a central shaft tube at an angle, which multistage circular disk part is formed by assembling and fixing upper and lower ends of shaft pins in the concave roller teeth.
Advantageous Effects
[11] The present invention can be used in a autocycle, a bicycle and various kinds of industrial machines or insruments and thus it is expected to apply to all kind of industrial machines which transmit power with reducing energy loss. [12] In addition, concave roller teeth lead to rolling friction when they engage with cone-shaped gear teeth, thereby abrasion and noise decrease. [13] Accordingly, the gear member according the present invention differently from the conventional gears,in which round incidence angle of concave roller teeth is contacted to cone-shaped teeth, has a flexiblity without regard to contacting angle and is good in efficiency of power transmission thereby it is useful invention in fundamental parts industry.
Brief Description of the Drawings [14] The above objects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which: [15] Fig. 1 is a perspective view of a cone-shaped gear member for power transmission according to the present invention; [16] Fig. 2 is a cross section of A-A in the Fig. 1.
Best Mode for Carrying Out the Invention [17] Hereafter, specific embodiments of the present invention will be described by the following examples of the figures attached hereto. However, it should be understood that the scope of the present invention is not limited thereto.
[18] Fig. 1 is a perspective view of a cone-shaped gear member for power transmission according to the present invention and Fig. 2 is a cross section of A-A in the Fig. 1.
[19] A cone-shaped gear member for power transmission 2 comprises of a cone-shaped gear 4 and concave roller gears 6.
[20] A cone-shaped gear 4 comprises a circular disk 10 on which hollow tube 8 is mounted and a plurality of cone-shaped gear teeth 12 being positioned along the verges of the circular disk 10, tilting prependical of 90 ° to outward and having tooth grooves 14 with a curvature formed between the gear teeth 12.
[21] The hollow tube 8 is positioned at the center of the circular disk 10 for connecting with a length of shaft. The area of the circular disk 10 aren't limited and enough if they are proposed in a design.
[22] The cone-shaped gear teeth 12 are arranged at an interval making it possible to engage with a concave roller gear teeth 16 most suitably. The curvature of the tooth grooves 14 formed between the cone-shaped gear teeth 12 matches with the outside diameter of the concave roller teeth 16.
[23] A concave roller gear 6 comprises a plurality of concave roller teeth 16 arranged at a interval, tilting to shaft axis L to engage with the cone-shaped gear teeth 12 of the cone-shaped gear 4 and a multistage circular disk part 22 tilting pararell to shaft tube 20, which is formed by assembling and fixing upper and lower ends of shaft pins 18 in the concave roller teeth 16.
[24] On the one hand, the gear member 2 can realize various rotation velocities by modifying rotation ratio caused by increasing and decreasing either the number of concave roller teeth 16 of the concave roller gear 6 or the number of cone-shaped gear teeth 12 of the cone-shaped gear 4.
[25] The cone-shaped gear member of power transmission according to the present invention can gently trasmit the power with less energy loss incomparatably better than that of the prior power transmission method since it can fully drive by closely contacting teeth grooves 14 with concave roller teeth 16 without fixed incidence angle between the smooth face in the round circular solid curve of teeth groove 14 of cone- shaped gear 4 and concave roller teeth 16 of concave roller gear 6.
[26] To describe the mechanism of the present invention, when unillustrated shaft transmits power to the hollow tube 8, the power is transmitted to the cone-shaped gear 4, thereby the cone-shaped gear teeth 12 tilting at an cone-shaped curve to shaft axis rotate axially.
[27] The concave roller teeth 16 of the concave roller gear 6 lead to rolling friction when they engage with the cone-shaped gear teeth 12, thereby contact friction caused by contacting with the cone-shaped gear teeth 12 decreases. Even though the concave roller teeth 16 engage perfectly with the teeth grooves 14, the roller gear lead to slight
rolling friction to decrease abrasion caused by contact friction. [28] Accordingly, various rotation velocities can be realized by modifying rotation ratio by adjusting either the number of concave roller teeth 16 of the concave roller gear 6 or the number of cone-shaped gear teeth 12 of the cone-shaped gear 4. [29] When power is transmitted through the cone-shaped gear 4 in the opposite direction, the power is transmitted by the same mechanism except transmission direction, and thus detailed explanation is omitted. [30] On the other hand, the cone-shaped gear member 2 for power transmission can be applied variously based on design of any specific instrument or apparatus.
Industrial Applicability [31] A gear member according to the present invention can transmit power without loss when it is used for shafts arranged with various mode such as crossed and connected, thereby the gear member can be applied variously to such as a bicycle and a engine. [32] In addition, roller teeth lead to rolling friction when they engage with gear teeth of a cone-shaped gear, thereby abrasion and noise decrease. [33] Accordingly, the gear member according the present invention comprising one or more roller gears on one side differently from the conventional gears, can be used for machine demanding silence, thereby it is useful invention in fundamental parts industry.
Claims
[1] A gear member for power transmission which comprises: a) a cone-shaped gear comprising a circular disk part and a plurality of cone-shaped gear teeth positioned along the verges of the circular disk and tilted outward at an cone- shaped curve, where tooth grooves with a curvature are formed between the gear teeth; and b) a concave roller gears comprising a plurality of concave roller teeth arranged at an interval to engage perpendicularly with the gear teeth of the cone- shaped gear and a multistage circular disk part tilting to a central shaft tube at an angle, which multistage circular disk part is formed by assembling and fixing upper and lower ends of shaft pins in the concave roller teeth 16.
[2] The gear member for power transmission according to claim 1, wherein the cone- shaped gear 4 comprises a cone-shaped gear teeth 12 tilting outward to the circular disk part 10.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2006-0080870 | 2006-08-25 | ||
| KR20060080870 | 2006-08-25 | ||
| KR1020070085496A KR20080018842A (en) | 2006-08-25 | 2007-08-24 | Power transmission cone gear member |
| KR10-2007-0085496 | 2007-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008023965A1 true WO2008023965A1 (en) | 2008-02-28 |
Family
ID=39107001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2007/004093 WO2008023965A1 (en) | 2006-08-25 | 2007-08-24 | Conical gear member for power transmission |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2008023965A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2342532A1 (en) * | 2009-12-29 | 2010-07-07 | Thyssenkrupp Elevator Innovation Center S.A. | Drive system for escalators and moving walkways |
| RU2443919C1 (en) * | 2010-10-01 | 2012-02-27 | Открытое акционерное общество "Информационные спутниковые системы" имени академика М.Ф. Решетнёва" | Antibacklash gear transmission |
| CN103062334A (en) * | 2013-01-02 | 2013-04-24 | 北京工业大学 | Anti-backlash transmission comprising trochoid gears and roll pins with conical teeth |
| CN104776159A (en) * | 2015-03-24 | 2015-07-15 | 浙江大学 | Roller gear driving unit |
| CN106593804A (en) * | 2017-02-06 | 2017-04-26 | 李和坤 | Special wind-driven water pump |
| WO2019191308A1 (en) * | 2018-03-27 | 2019-10-03 | Ceramicspeed Sport A/S | Bicycle drive system |
| CN110553617A (en) * | 2019-08-15 | 2019-12-10 | 珠海格力智能装备有限公司 | Spiral bevel gear assembly backlash detection device and method |
| US11786112B2 (en) | 2020-04-30 | 2023-10-17 | Ambu A/S | Endoscope control system |
| US11794389B2 (en) | 2019-09-06 | 2023-10-24 | Ambu A/S | Tip part assembly for an endoscope |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100217891B1 (en) * | 1996-05-28 | 1999-09-01 | 황칠성 | Unique bike of automatic transmission |
| US20020130483A1 (en) * | 2001-03-15 | 2002-09-19 | Yongqiang Huang | Chainless transmission mechanism for bicycles |
| WO2004016971A1 (en) * | 2002-07-06 | 2004-02-26 | Bikevalley Co., Ltd | Gear member for power transmission |
| KR100581839B1 (en) * | 2005-12-09 | 2006-05-22 | 주식회사 한국티엔비 | Power train |
-
2007
- 2007-08-24 WO PCT/KR2007/004093 patent/WO2008023965A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100217891B1 (en) * | 1996-05-28 | 1999-09-01 | 황칠성 | Unique bike of automatic transmission |
| US20020130483A1 (en) * | 2001-03-15 | 2002-09-19 | Yongqiang Huang | Chainless transmission mechanism for bicycles |
| WO2004016971A1 (en) * | 2002-07-06 | 2004-02-26 | Bikevalley Co., Ltd | Gear member for power transmission |
| KR100581839B1 (en) * | 2005-12-09 | 2006-05-22 | 주식회사 한국티엔비 | Power train |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2342532A1 (en) * | 2009-12-29 | 2010-07-07 | Thyssenkrupp Elevator Innovation Center S.A. | Drive system for escalators and moving walkways |
| ES2342532B1 (en) * | 2009-12-29 | 2011-05-20 | Thyssenkrupp Elevator Innovation Center S.A. | DRIVE SYSTEM FOR STAIRS AND MOBILE CORRIDORS. |
| RU2443919C1 (en) * | 2010-10-01 | 2012-02-27 | Открытое акционерное общество "Информационные спутниковые системы" имени академика М.Ф. Решетнёва" | Antibacklash gear transmission |
| CN103062334A (en) * | 2013-01-02 | 2013-04-24 | 北京工业大学 | Anti-backlash transmission comprising trochoid gears and roll pins with conical teeth |
| CN104776159A (en) * | 2015-03-24 | 2015-07-15 | 浙江大学 | Roller gear driving unit |
| CN106593804A (en) * | 2017-02-06 | 2017-04-26 | 李和坤 | Special wind-driven water pump |
| WO2019191308A1 (en) * | 2018-03-27 | 2019-10-03 | Ceramicspeed Sport A/S | Bicycle drive system |
| CN110553617A (en) * | 2019-08-15 | 2019-12-10 | 珠海格力智能装备有限公司 | Spiral bevel gear assembly backlash detection device and method |
| CN110553617B (en) * | 2019-08-15 | 2021-11-05 | 珠海格力智能装备有限公司 | Spiral bevel gear assembly backlash detection device and method |
| US11794389B2 (en) | 2019-09-06 | 2023-10-24 | Ambu A/S | Tip part assembly for an endoscope |
| US11806904B2 (en) | 2019-09-06 | 2023-11-07 | Ambu A/S | Tip part assembly for an endoscope |
| US11938662B2 (en) | 2019-09-06 | 2024-03-26 | Ambu A/S | Tip part assembly for an endoscope |
| US11945144B2 (en) | 2019-09-06 | 2024-04-02 | Ambu A/S | Tip part assembly for an endoscope |
| US11786112B2 (en) | 2020-04-30 | 2023-10-17 | Ambu A/S | Endoscope control system |
| US12011146B2 (en) | 2020-04-30 | 2024-06-18 | Ambu A/S | Method of assembly of an endoscope control system |
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