KR20170041069A - EGR Valve Having Planet Gear System - Google Patents

EGR Valve Having Planet Gear System Download PDF

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Publication number
KR20170041069A
KR20170041069A KR1020150140561A KR20150140561A KR20170041069A KR 20170041069 A KR20170041069 A KR 20170041069A KR 1020150140561 A KR1020150140561 A KR 1020150140561A KR 20150140561 A KR20150140561 A KR 20150140561A KR 20170041069 A KR20170041069 A KR 20170041069A
Authority
KR
South Korea
Prior art keywords
driving force
shaft
planetary gear
gear
carrier
Prior art date
Application number
KR1020150140561A
Other languages
Korean (ko)
Inventor
김성준
남성은
정진복
Original Assignee
이래오토모티브시스템 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 이래오토모티브시스템 주식회사 filed Critical 이래오토모티브시스템 주식회사
Priority to KR1020150140561A priority Critical patent/KR20170041069A/en
Publication of KR20170041069A publication Critical patent/KR20170041069A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
    • F02M26/54—Rotary actuators, e.g. step motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • 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
    • F16H1/34—Toothed gearings for conveying rotary motion with gears having orbital motion involving gears essentially having intermeshing elements other than involute or cycloidal teeth
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

Disclosed is an exhaust gas recirculation (EGR) valve including a planetary gear. According to the present invention, an EGR valve (100) includes: a valve head (111); a shaft (110); a driving force transmission shaft (120); a carrier (130); a planetary gear (140); a ring gear (150); a driving force generation device (160); and a housing (170). According to the present invention, since the driving force provided from the driving force generation device is increased, the present invention can more firmly and stably implement an opening and closing operation of the valve head, reduce the volume of a final product of the EGR valve, reduce the number of components, and implement more simplified assembly process. As a result, production costs can be reduced.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an EGR valve,

The present invention relates to an idle valve, and more particularly to an idle valve including a planetary gear.

Generally, nitrogen oxides (NOx) are generated by the combination of oxygen and nitrogen at high pressure and high temperature. In order to suppress this, a part of the exhaust gas discharged into the atmosphere is supplied again to the intake system side to lower the maximum combustion temperature, An exhaust gas recirculation (EGR) system is used to reduce the supply and reduce the production of nitrogen oxides.

Since the combustion state of the fuel depends on the amount of the exhaust gas that is supplied to the intake system side again in the exhaust gas recirculation (EGR) system, a part of the exhaust gas discharged from the exhaust gas recirculation system ) And particulate matter (PM).

As described above, in the exhaust gas recirculation (EGR) system, the amount of exhaust gas to be returned is important, and the exhaust gas to be returned is controlled. Therefore, in exhaust gas recirculation (EGR) systems, it is most important that an easy-to-open valve is used.

Generally, in an easy-to-operate valve for controlling the position of a valve by using an electric motor, when the planetary gear is used as a speed reducer, the valve force can be effectively increased compared to the size of the valve.

However, when the planetary gear is used, there is a problem that the assembly becomes complicated and the manufacturing cost of the parts increases.

Accordingly, there is a need for a technique relating to an EGR valve which solves the problems of the above-mentioned conventional prior art valves, and which is easy to assemble and can reduce the manufacturing cost of parts.

Korean Patent Laid-Open No. 10-2011-0060290 (Published date 2011.06.08)

It is an object of the present invention to provide an easy-to-operate valve that can reduce the final product size, simplify the assembly method, reduce the number of parts, and reduce the production cost in an easy- .

According to one aspect of the present invention, there is provided an easy valve comprising: a valve head mounted at one end of a shaft and opening or closing an exhaust gas flow passage by driving of a shaft; A shaft which is actuated by a driving force transmitted from a driving force transmission shaft and is equipped with a valve head at one end; A driving force transmitting shaft for mounting a carrier on one end and transmitting the driving force transmitted from the planetary gear to the shaft; A carrier mounted on one end of the driving force transmitting shaft and having at least two planetary gear mounting shafts mounted on the other end thereof; A planetary gear mounted on the planetary gear-mounted shaft of the carrier and transferring rotational driving force provided from the driving force generating device to the carrier; A ring gear mounted and fixed in the housing at a position surrounding the planetary gear so as to realize revolution of the planetary gear; A driving force generating device for providing a rotational driving force to the planetary gear; And a housing for housing and fixing the shaft, the driving force transmitting shaft, and the driving force generating device therein.

In one embodiment of the present invention, the driving force transmission shaft and the shaft are connected to each other by a cam structure, and the cam structure may be a cam structure that converts the rotational motion of the driving force transmission shaft into a linear reciprocating motion of the shaft.

In one embodiment of the present invention, the driving force transmitting shaft may further include an elastic member for providing a rotational elastic restoring force to the driving force transmitting shaft.

In this case, the elastic member may be a coil spring mounted in a structure to wrap around the driving force transmission shaft.

In one embodiment of the present invention, the driving force transmitting shaft, the carrier, and the planetary gear mounting shaft may be integrally manufactured by an injection molding method.

In one embodiment of the present invention, the planetary gear includes: a first gear rotatably mounted on the planetary gear mount shaft and rotated by a rotational driving force transmitted from the drive force generator; And a ring gear having a number of threads smaller than the number of threads formed in the first gear and integrally mounted on one side of the first gear at the same rotation axis as the first gear, Gears. ≪ / RTI >

In this case, the planetary gear may be mounted on the planetary gear mount shaft such that the first stage gear of the planetary gear is directed to the driving force transmission shaft direction and, at the same time, the second stage gear of the planetary gear is directed to the driving force generator.

As described above, according to the easy valve of the present invention, by providing the planetary gear, the driving force provided from the driving force generating device is increased, so that the opening and closing operation of the valve head can be realized more stably and stably.

Further, according to the easy valve of the present invention, the volume of the final valve final product can be reduced by providing the driving force transmitting shaft, the carrier, the planetary gear and the ring gear arranged at specific positions.

Further, according to the easy valve of the present invention, by providing the driving force transmitting shaft, the carrier, the planetary gear and the ring gear arranged at specific positions, the number of parts can be reduced and a more simplified assembling process can be realized, As a result, the cost of production can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view illustrating an easy valve according to an embodiment of the present invention; FIG.
2 is an exploded perspective view showing the easy valve shown in Fig.
3 is a cutaway exploded perspective view showing the easy valve shown in Fig.
4 is an exploded perspective view showing a state in which the driving force transmission shaft and the elastic member are separated from each other.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Prior to the description, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and should be construed in accordance with the technical concept of the present invention.

Throughout this specification, when a member is "on " another member, this includes not only when the member is in contact with another member, but also when there is another member between the two members.

Throughout this specification, when an element is referred to as "including" an element, it is understood that it may include other elements as well, without departing from the other elements unless specifically stated otherwise.

Fig. 1 is a sectional view showing an easy valve according to an embodiment of the present invention, and Fig. 2 is an exploded perspective view showing the easy valve shown in Fig. Fig. 3 is a cutaway exploded perspective view showing the idle valve shown in Fig. 2, and Fig. 4 is an exploded perspective view showing a state in which the driving force transmission shaft and the elastic member are separated from each other.

Referring to these drawings, an easy valve 100 according to the present embodiment includes a shaft 110 which is operated by a driving force transmitted from a driving force transmission shaft 120 and has a valve head 111 mounted on one end thereof . At this time, the valve head 111 can open or close the exhaust gas flow passage 101 by driving the shaft 110.

In addition, the easy valve 100 according to the present embodiment includes a driving force transmitting shaft 120, a carrier 130, a planetary gear 140, a ring gear 150, a driving force generating device 160, and a housing 170 May be included.

More specifically, the driving force transmitting shaft 120 may have a carrier 130 mounted at one end thereof, and may transmit the driving force transmitted from the planetary gear 140 to the shaft 110.

At this time, the driving force transmission shaft 120 and the shaft 110 may be connected to each other by the cam structure. And is not particularly limited as long as it is a cam structure capable of converting a rotational motion transmitted from the driving force transmission shaft 120 into a linear reciprocating motion.

The shaft 110, the driving force transmitting shaft 120, and the driving force generating device 160 may be received and fixed within the housing 170, as shown in FIG.

4, the driving force transmitting shaft 120 may be further provided with an elastic member 121 for providing a rotational elastic restoring force to the driving force transmitting shaft 120. As shown in FIG. The elastic member 121 is not particularly limited as long as it is a member that is mounted on the driving force transmission shaft 120 and can provide rotational elastic restoring force to the driving force transmission shaft 120. For example, have.

In this case, after the drive force transmission shaft 120 is driven, the drive to be restored to the original position uses the elastic restoring force provided from the elastic member 121 without using the drive force generation device 160, so that the valve drive effect And the power consumption can be reduced.

Hereinafter, the planetary gear included in the easy valve 100 according to the present embodiment will be described in detail.

1 to 4, the easy valve 110 according to the present embodiment includes a driving force transmitting shaft 120, a carrier 130, a planetary gear 140, a ring gear 150, (160).

Specifically, the carrier 130 may have a structure in which the carrier 130 is mounted on one end of the driving force transmission shaft 120 and two or more planetary gear-mounting shafts 131 are mounted on the other end.

At this time, the driving force transmitting shaft 120, the carrier 130, and the planetary gear mounting shaft 131 may be integrally formed by an injection molding method.

Therefore, the easy-to-handle valve 100 according to the present embodiment, which can be manufactured by the above-described injection molding method, can easily and simply integrally drive the driving force transmission shaft 120, the carrier 130, and the planetary gear- The number of parts can be reduced, and a simpler assembly process can be realized, resulting in a reduction in production cost.

The planetary gear 140 is mounted on the planetary gear mounting shaft 131 of the carrier 130 and can transmit the rotational driving force provided from the driving force generating device 160 to the carrier 130.

The ring gear 150 may be mounted and fixed within the housing 170 at a position surrounding the planetary gear 140 so as to realize revolution of the planetary gear 140.

More specifically, as shown in Figs. 1 to 3, the planetary gear 140 may be a structure including a first gear 141 and a second gear 142.

The first gear 141 is rotatably mounted on the planetary gear mounting shaft 131 and can be rotated by the rotational driving force transmitted from the driving force generating device 160. [

The second gear 142 is integrally mounted on one side of the first gear 141 at the same rotational axis as the first gear 141 and has a smaller number of threads than the number of threads formed in the first gear 141 And can be engaged and rotated along thread threads formed in the inside of the ring gear 150.

Here, as shown in Figs. 1 and 2, the planetary gear 140 may be mounted to face in a specific direction. More specifically, the planetary gear 140 is configured such that the first gear 141 of the planetary gear 140 faces the driving force transmission shaft 120 and at the same time, the second gear 142 of the planetary gear 140 is driven To the planetary gear mounting shaft 131 so as to face the direction of the planetary gear 160.

As described above, when the planetary gear 140 is mounted in a specific direction, it is possible to further reduce the volume of the entire independent valve as compared with the case of the planetary gear 140 mounted in the opposite direction.

More specifically, when the planetary gear 140 is mounted so as to face the above-mentioned specific direction, the driving force transmitting shaft 120, the carrier 130, the planetary gear 140, The gear 150 and the driving force generating device 160 are arranged in this order. As described above, when the component rolls are arranged in a specific position, the respective components can be compactly arranged as shown in FIG. 1, and as a result, the volume of the final product of the easy valve can be reduced .

If the mounting direction of the planetary gear 140 is mounted in the direction opposite to the above-mentioned specific direction, the carrier 130 and the driving force transmission shaft 120 can not be easily manufactured as one body, The components can not be arranged in a compact manner, resulting in an increase in the volume of the end product of the easy valve. In addition, the carrier 130 and the driving force transmission shaft 120 must be separately manufactured and a separate assembly process is required in the entire assembling process. As a result, problems may be caused in the manufacturing process.

As described above, according to the easy valve of the present invention, by providing the planetary gear, the driving force provided from the driving force generating device is increased, so that the opening and closing operation of the valve head can be realized more stably and stably.

Further, according to the easy valve of the present invention, the volume of the final valve final product can be reduced by providing the driving force transmitting shaft, the carrier, the planetary gear and the ring gear arranged at specific positions.

Further, according to the easy valve of the present invention, by providing the driving force transmitting shaft, the carrier, the planetary gear and the ring gear arranged at specific positions, the number of parts can be reduced and a more simplified assembling process can be realized, As a result, the cost of production can be reduced.

In the foregoing detailed description of the present invention, only specific embodiments thereof have been described. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

That is, the present invention is not limited to the above-described specific embodiment and description, and various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. And such variations are within the scope of protection of the present invention.

100: Easy Valve
101: exhaust gas flow path
110: shaft
111: Valve head
112: cam
120: driving force transmitting shaft
121: elastic member
130: Carrier
131: Planetary gear mounting shaft
140: planetary gear
141: 1st gear
142: 2nd gear
150: ring gear
160: Driving force generating device
170: Housing

Claims (7)

A valve head 111 mounted at one end of the shaft 110 and opening or closing the exhaust gas flow passage 101 by driving of the shaft 110;
A shaft 110 operated by a driving force transmitted from the driving force transmission shaft 120 and having a valve head 111 mounted at one end thereof;
A driving force transmission shaft 120 for mounting the carrier 130 at one end and transmitting the driving force transmitted from the planetary gear 140 to the shaft 110;
A carrier 130 mounted on one end of the driving force transmission shaft 120 and having two or more planetary gear mounting shafts 131 mounted on the other end thereof;
A planetary gear 140 mounted on the planetary gear mounting shaft 131 of the carrier 130 and transmitting rotational driving force provided from the driving force generating device 160 to the carrier 130;
A ring gear 150 mounted and fixed in the housing 170 at a position surrounding the planetary gear 140 so as to realize revolution of the planetary gear 140;
A driving force generating device (160) for providing a rotational driving force to the planetary gear (140); And
A housing 170 for housing and fixing the shaft 110, the driving force transmission shaft 120, and the driving force generating device 160 therein;
(100). ≪ / RTI >
The method according to claim 1,
The driving force transmission shaft 120 and the shaft 110 are connected to each other by a cam structure,
Wherein the cam structure is a cam structure that converts a rotational motion of the driving force transmission shaft (120) into a linear reciprocating motion of the shaft (110).
The method according to claim 1,
Wherein the driving force transmitting shaft (120) is further provided with an elastic member (121) for providing a rotational elastic restoring force to the driving force transmitting shaft (120).
The method of claim 3,
Wherein the elastic member (121) is a coil spring which is mounted on the driving force transmitting shaft (120) so as to surround the driving force transmitting shaft (120).
The method according to claim 1,
Wherein the driving force transmitting shaft (120), the carrier (130), and the planetary gear mounting shaft (131) are integrally formed by an injection molding method.
The method according to claim 1,
The planetary gear 140 includes:
A first gear 141 rotatably mounted on the planetary gear mounting shaft 131 and rotated by a rotational driving force transmitted from the driving force generating device 160; And
The ring gear 150 is integrally mounted on one side of the first gear 141 at the same rotation axis as the first gear 141 and has a smaller number of threads than the number of threads formed in the first gear 141, A second gear 142 that meshes with and rotates along a thread formed in the inside of the second gear 142;
Wherein the valve comprises a valve body.
The method according to claim 6,
The planetary gear 140 is configured such that the first gear 141 of the planetary gear 140 faces the driving force transmission shaft 120 and at the same time the second gear 142 of the planetary gear 140 is driven by the driving force generator 160 To the planetary gear set shaft (131).
KR1020150140561A 2015-10-06 2015-10-06 EGR Valve Having Planet Gear System KR20170041069A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150140561A KR20170041069A (en) 2015-10-06 2015-10-06 EGR Valve Having Planet Gear System

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150140561A KR20170041069A (en) 2015-10-06 2015-10-06 EGR Valve Having Planet Gear System

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200125292A (en) 2019-04-26 2020-11-04 주식회사 삼보산업 Planetary geared reducer with dual reduction ratio
US11054002B2 (en) 2019-05-22 2021-07-06 Sambo Industrial Co., Ltd. Planetary geared reducer with dual reduction ratio

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110060290A (en) 2009-11-30 2011-06-08 주식회사 은하 Spring return valve actuater with a group of planetary gears

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110060290A (en) 2009-11-30 2011-06-08 주식회사 은하 Spring return valve actuater with a group of planetary gears

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200125292A (en) 2019-04-26 2020-11-04 주식회사 삼보산업 Planetary geared reducer with dual reduction ratio
US11054002B2 (en) 2019-05-22 2021-07-06 Sambo Industrial Co., Ltd. Planetary geared reducer with dual reduction ratio

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