WO2019112237A1 - Vehicle transmission linear actuator - Google Patents
Vehicle transmission linear actuator Download PDFInfo
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- WO2019112237A1 WO2019112237A1 PCT/KR2018/014866 KR2018014866W WO2019112237A1 WO 2019112237 A1 WO2019112237 A1 WO 2019112237A1 KR 2018014866 W KR2018014866 W KR 2018014866W WO 2019112237 A1 WO2019112237 A1 WO 2019112237A1
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- core
- bobbin
- plunger
- coil
- center core
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
Definitions
- the present invention relates to a linear actuator for an automotive transmission, and more particularly, to a linear actuator used in a double clutch transmission.
- the double clutch transmission is a manual transmission-type automatic transmission equipped with two clutches for individually controlling the odd-numbered gear stages and the even-numbered gear stages.
- the double clutch transmission described above has the advantages of an automatic transmission and the advantages of a manual transmission in terms of high fuel efficiency and high efficiency. Particularly, since there is no acceleration / deceleration phenomenon generated in a conventional transmission equipped with a single plate clutch, the transmission feeling is also excellent.
- the double clutch transmission includes a speed change device having a free-select function for previously connecting the speed change stage of another speed change system, which is likely to be shifted next, in addition to the speed change stage currently in operation.
- Korean Patent Registration No. 10-1039921 discloses a transmission device having a free-select function, and Korean Patent Registration No. 10-1233061 (June 1, 2011) Linear actuators are disclosed.
- the conventional linear actuator has a structure in which a plunger is sucked by using a magnetic field generated in a coil when power is applied, and the responsiveness of the actuator can be improved when the number of turns of the coil wound on the bobbin is increased.
- the present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to provide a linear actuator for an automotive transmission, which can increase a suction force without increasing the number of turns of a coil, .
- a linear actuator for an automotive transmission including: a hollow bobbin extending in one direction; first and second coils wound on outer circumferential surfaces of the bobbin and generating a magnetic field when power is applied; First and second cores provided respectively inside the both ends of the bobbin, a center core provided inside a middle portion of the bobbin, first and second yokes provided respectively at both ends of the bobbin, A plunger coupled to the center core to reciprocate by a magnetic field generated from the coil when power is applied, and a rod coupled through the plunger and sliding through the core.
- the first core, the center core, the first yoke, and the plate constitute a magnetic circuit to move the plunger toward the first core.
- the second core, the center core, the second yoke, and the plate constitute a magnetic circuit to move the plunger toward the second core.
- the present invention constructed as described above can increase the attracting force for moving the plunger by increasing the magnetic flux density by constituting the magnetic circuit together with the core and the yoke together with the center core and the plate provided at the middle portion of the bobbin. Therefore, high response can be expected with low power consumption, and the energy efficiency of the actuator can be improved.
- FIG. 1 is a sectional view of a linear actuator for an automotive transmission according to an embodiment of the present invention
- FIG. 2 and FIG. 3 are views showing an operating state of a linear actuator for an automotive transmission according to an embodiment of the present invention
- a linear actuator for an automotive transmission includes a case 110 forming an outer shape of an actuator, and a housing 120 installed inside the case 110.
- the case 110 has a hollow cylindrical shape extending in one direction.
- the case 110 has an open top and a closed bottom.
- the component including the housing 120 is installed through the open upper end of the case 110 and caulking and sealing the upper end of the case 110 when the installation of the component is completed.
- the component including the housing 120 can be prevented from flowing inside the case 110, and foreign substances can be introduced into the case 110 from between the case 110 and the housing 120 Can be prevented. Particularly, if an O-ring 112 is added between the case 110 and the housing 120, foreign matter can be prevented more effectively.
- the housing 120 has a hollow cylindrical shape extending in the same direction as the case 110. Unlike the case 110, the housing 120 has an upper end closed and a lower end opened. The open lower end of the housing 120 is sealed by the lower end of the case 110 when the housing 120 is assembled. The upper end of the housing 120 protrudes upward, and an operation space 122 for moving the rod 180, which will be described later, is formed therein.
- a terminal 124 for supplying power to the coil 140 protrudes from the upper end of the housing 120.
- the terminal 124 may be a press-fit terminal having a deforming hole (not shown) formed therein.
- the bobbin 130 is installed inside the housing 120 and the coil 140 is wound on the outer circumferential surface of the bobbin 130.
- a core portion 150 and a yoke portion 160 are provided at an upper end portion, a middle portion and a lower end portion of the bobbin 130 and a plunger 170 and a rod 180 are installed inside the bobbin 130.
- the bobbin 130 has a hollow cylindrical shape extending in the same direction as the housing 120.
- the outer circumferential surface of the bobbin 130 is divided into two regions by two flanges 132 and 134 and one baffle 136.
- the first flange 132 is formed on the upper end of the bobbin 130 and the second flange 134 is formed on the lower end of the bobbin 130.
- the baffle 136 is formed on the intermediate portion of the bobbin 130, And the flange (134).
- the first coil 140a is wound around the area between the first flange 132 and the baffle 136 and the second coil 140b is wound around the area between the second flange 134 and the baffle 136.
- the baffle 136 is provided with a plate 160c for constituting a magnetic circuit.
- the plate 160c is made of a conductor so as to constitute a magnetic circuit and is formed into an annular shape extending along the baffle 136. [ At this time, the plate 160c may be integrally formed with the baffle 136 through insert injection.
- the coil 140 is a means for generating a magnetic field when power is applied.
- the magnetic field generated in the coil 140 is induced by the core portion 150 and the yoke portion 160 and is used to move the plunger 170.
- the coil 140 is composed of a first coil 140a wound on the upper end of the bobbin 130 and a second coil 140b wound on the lower end of the bobbin 130.
- An insulation tape (not shown) may be taped on the surface of the coil 140 wound on the upper and lower ends of the bobbin 130.
- the insulation tape serves to prevent the current applied to the coil 140 from leaking to the outside.
- the core portion 150 together with the yoke portion 160 constitute a magnetic circuit. That is, a magnetic circuit is formed to induce a magnetic field generated in the coil 140.
- the core unit 150 includes a first core 150a coupled to the inside of the upper end of the bobbin 130, a second core 150b coupled to the inside of the lower end of the bobbin 130, And a center core 150c provided in the inner side.
- the first core 150a and the second core 150b have the same structure and shape, but are disposed so as to face each other at the time of installation.
- the structure and shape of the first core 150a will be described as an example.
- the first core 150a has a columnar shape extending in one direction.
- a through hole 152a is formed in the center of the first core 150a and a rod 180 is coupled to the through hole 152a.
- the through hole 152a is formed in a multi-stage structure including a large diameter portion and a small diameter portion.
- the large diameter portion of the through hole 152a is provided with a bush 154a for guiding the movement of the rod 180 and reducing friction.
- a magnetic force strengthening portion 156a is formed at the lower end of the first core 150a.
- the magnetic force enhancing portion 156a extends toward the center core 150c and has a suction groove 158a into which the upper end of the plunger 170 is inserted. At this time, the end of the magnetic force enhancing portion 156a is formed into a tapered shape whose outer diameter decreases toward the center core 150c side.
- the magnetic field induced by the first core 150a is concentrated at the end of the magnetic force enhancing portion 156a, The plunger 170 is moved toward the first core 150a through the suction force generated by the concentrated magnetic field.
- a mounting groove 159a into which the guide pipe 190 is inserted is formed on the outer peripheral surface of the magnetic force enhancing portion 156a.
- the guide pipe 190 inserted in the mounting groove 159a is positioned between the first core 150a and the center core 150c and serves to adjust the spacing distance therebetween. Through this, the movement distance of the plunger 170 and the stroke of the rod 180 can be controlled.
- the center core 150c has a columnar shape extending in one direction.
- a through hole 152c is formed at the center of the center core 150c and a plunger 170 is coupled to the through hole 152c.
- Mounting grooves 159c are formed on the upper and lower outer circumferential surfaces of the center core 150 to insert the guide pipes 190 therein.
- the center core 150c described above is positioned between the first coil 140a and the second coil 140b and serves to increase the magnetic flux density of the magnetic circuit constituted by the core portion 150 and the yoke portion 160 . As the magnetic flux density of the magnetic circuit increases, the attracting force for moving the plunger 170 is increased. Thus, high response can be expected with low power consumption.
- the yoke portion 160 together with the core portion 150 constitutes a magnetic circuit so as to induce a magnetic field generated in the coil 140.
- the yoke portion 160 includes a first yoke 160a coupled to an upper end of the bobbin 130, a second yoke 160b coupled to a lower end of the bobbin 130, Plate 160c.
- the first yoke 160a and the second yoke 160b are formed in an annular shape having a predetermined thickness.
- the first yoke 160a is mounted on the upper end of the first core 150a and the second yoke 160b is mounted on the lower end of the second core 150b.
- the plate 160c is installed inside the baffle 136 as described above.
- the plate 160c plays the same role as the center core 150c. That is, the magnetic flux density of the magnetic circuit, which is positioned between the first coil 140a and the second coil 140b and is formed by the core portion 150 and the yoke portion 160, increases.
- the plunger 170 is coupled to penetrate through the center core 150c and reciprocates by a magnetic field generated by the coil 140 when power is applied.
- the rod 180 is coupled to penetrate the plunger 170 and reciprocates with the plunger 170.
- the plunger 170 and the rod 180 are integrally formed by the engagement pin 172 inserted through the side surface, and reciprocate when the power is applied.
- the coupling pin 172 is formed in the shape of a pipe having a slit (not shown) formed in the longitudinal direction, so that the coupling pin 172 is easy to install, and the plunger 170 and the rod 180 can be securely coupled after installation.
- An elastic ring 174 is provided around the rod 180 protruding from the upper and lower ends of the plunger 170, and more specifically, the upper and lower portions of the plunger 170, respectively.
- the elastic ring 174 serves to absorb noise and impact by contacting the first and second cores 150a and 150b when the plunger 170 reciprocates.
- the upper and lower ends of the rod 180 pass through the first core 150a and the second core 150b, respectively.
- a position detecting magnet 182 is provided on the upper end of the rod 180 passing through the first core 150a.
- a push nut 184 is coupled to the upper portion of the position detecting magnet 182 to prevent the magnet 182 from escaping.
- FIG. 1 The operation of the linear actuator according to the present embodiment will be described with reference to FIGS. 2 and 3.
- FIG. 2 The operation of the linear actuator according to the present embodiment will be described with reference to FIGS. 2 and 3.
- a magnetic circuit is constituted by the first core 150a, the center core 150c, the first yoke 160a, and the plate 160c. do. That is, when a power is applied, a magnetic field generated in the first coil 140a is induced by the first core 150a, the center core 150c, the first yoke 160a, and the plate 160c, Shaped magnetic force strengthening portion 156a protruding to the lower end of the tapered portion 156a. The magnetic field concentrated at the magnetic force enhancing portion 156a generates an attracting force to move the plunger 170. [ Accordingly, the plunger 170 rises to the first core 150a side, and the rod 180 is drawn into the case 110.
- a magnetic circuit is formed by the second core 150b, the center core 150c, the second yoke 160b, and the plate 160c.
- a magnetic field generated in the second coil 140b is guided by the second core 150b, the center core 150c, the second yoke 160b, and the plate 160c, and the second core 150b Shaped magnetic reinforcing portion 156b protruding to the upper end of the tapered magnetic force strengthening portion 156b.
- the magnetic field concentrated in the magnetic force enhancing portion 156b generates a suction force to move the plunger 170. [ Thus, the plunger 170 descends toward the second core 150b, and the rod 180 is drawn out of the case 110 (see FIG. 3).
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Abstract
The present invention relates to a vehicle transmission linear actuator capable of increasing suction force without increasing the number of windings of a coil such that a high responsiveness with low power consumption can be expected. The present invention comprises: a hollow bobbin extending in one direction; first and second coils respectively wound around the outer peripheral surfaces of both end portions of the bobbin, and generating a magnetic field when power is applied; first and second cores respectively provided inside both end portions of the bobbin; a center core provided inside the middle portion of the bobbin; first and second yokes respectively provided at both end portions of the bobbin; a plate provided at the middle portion of the bobbin; a plunger coupled to penetrate the center core, and reciprocating by means of the magnetic field generated from the coils when power is applied; and a rod coupled to penetrate the plunger, and passing and sliding through a core part.
Description
본 발명은 자동차 변속기용 리니어 액추에이터에 관한 것으로, 더욱 자세하게는 더블클러치 트랜스미션에 사용되는 리니어 액추에이터에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear actuator for an automotive transmission, and more particularly, to a linear actuator used in a double clutch transmission.
더블 클러치 트랜스미션(Double Clutch Transmission; DCT)은 홀수 변속단과 짝수 변속단을 개별적으로 제어할 수 있도록 두 개의 클러치가 구비된 수동변속기 기반의 자동변속기이다.The double clutch transmission (DCT) is a manual transmission-type automatic transmission equipped with two clutches for individually controlling the odd-numbered gear stages and the even-numbered gear stages.
상술한 더블 클러치 트랜스미션은 자동변속기의 장점인 편리함과 수동변속기의 장점은 고연비 및 고효율의 특징을 갖는다. 특히, 단판 클러치를 탑재한 종래의 트랜스미션에서 발생되는 가속 정지감 현상이 없기 때문에 변속감 또한 매우 우수하다.The double clutch transmission described above has the advantages of an automatic transmission and the advantages of a manual transmission in terms of high fuel efficiency and high efficiency. Particularly, since there is no acceleration / deceleration phenomenon generated in a conventional transmission equipped with a single plate clutch, the transmission feeling is also excellent.
더블 클러치 트랜스미션은 현재 작동 중인 변속단 이외에 다음에 변속할 가능성이 높은 다른 변속계통의 변속단을 미리 연결하는 프리셀렉트 기능을 가진 변속장치를 포함하여 구성된다.The double clutch transmission includes a speed change device having a free-select function for previously connecting the speed change stage of another speed change system, which is likely to be shifted next, in addition to the speed change stage currently in operation.
대한민국등록특허공보 제10-1039921호(2011.06.01.)에는 프리 셀렉트 기능을 가진 변속장치가 개시되고, 대한민국등록특허공보 제10-1233061호(2011.06.01.)에는 프리 셀렉트 기능을 구현하기 위한 리니어 액추에이터가 개시되어 있다.Korean Patent Registration No. 10-1039921 (Jun. 1, 2011) discloses a transmission device having a free-select function, and Korean Patent Registration No. 10-1233061 (June 1, 2011) Linear actuators are disclosed.
종래의 리니어 액추에이터는 전원 인가 시 코일에서 발생한 자기장을 이용하여 플런저를 흡인하는 구조로서, 보빈에 감긴 코일의 권선수를 증가시킬 경우 액추에이터의 응답성을 향상시킬 수 있다.The conventional linear actuator has a structure in which a plunger is sucked by using a magnetic field generated in a coil when power is applied, and the responsiveness of the actuator can be improved when the number of turns of the coil wound on the bobbin is increased.
하지만, 액추에이터의 응답성을 향상시키기 위하여 코일의 권선수를 증가시킬 경우 액추에이터의 구동에 필요한 소비전력 또한 증가하게 되므로 액추에이터의 에너지 효율이 저하되는 문제가 있었다.However, in order to improve the responsiveness of the actuator, when the number of turns of the coil is increased, the power consumption required for driving the actuator also increases, so that the energy efficiency of the actuator is deteriorated.
본 발명은 전술한 종래 기술의 문제점을 해결하기 위한 것으로서, 코일의 권선수를 증가시키지 않고도 흡입력을 증대시킬 수 있어 낮은 소비전력으로 높은 응답성을 기대할 수 있는 자동차 변속기용 리니어 액추에이터를 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to provide a linear actuator for an automotive transmission, which can increase a suction force without increasing the number of turns of a coil, .
상기 목적을 달성하기 위한 본 발명에 의한 자동차 변속기용 리니어 액추에이터는, 일 방향으로 연장된 중공의 보빈과, 상기 보빈의 양단부 외주면에 각각 권선되고 전원 인가 시 자기장을 발생시키는 제1 및 제2코일과, 상기 보빈의 양단부 내측에 각각 설치된 제1 및 제2코어와, 상기 보빈의 중단부 내측에 설치된 센터 코어와, 상기 보빈의 양단부에 각각 설치된 제1 및 제2요크와, 상기 보빈의 중단부에 설치된 플레이트와, 상기 센터 코어를 관통하도록 결합되고 전원 인가 시 상기 코일에서 발생하는 자기장에 의해 왕복운동을 하는 플런저와, 상기 플런저를 관통하도록 결합되고 상기 코어부를 관통하여 슬라이딩하는 로드를 포함한다.According to an aspect of the present invention, there is provided a linear actuator for an automotive transmission, including: a hollow bobbin extending in one direction; first and second coils wound on outer circumferential surfaces of the bobbin and generating a magnetic field when power is applied; First and second cores provided respectively inside the both ends of the bobbin, a center core provided inside a middle portion of the bobbin, first and second yokes provided respectively at both ends of the bobbin, A plunger coupled to the center core to reciprocate by a magnetic field generated from the coil when power is applied, and a rod coupled through the plunger and sliding through the core.
상술한 구성에 따르면, 상기 제1코일에 전원이 인가될 경우 상기 제1코어, 상기 센터 코어, 상기 제1요크, 상기 플레이트가 자기회로를 구성하여 상기 플런저를 상기 제1코어 측으로 이동시킨다.According to the above-described configuration, when power is applied to the first coil, the first core, the center core, the first yoke, and the plate constitute a magnetic circuit to move the plunger toward the first core.
반면, 상기 제2코일에 전원이 인가될 경우 상기 제2코어, 상기 센터 코어, 상기 제2요크, 상기 플레이트가 자기회로를 구성하여 상기 플런저를 상기 제2코어 측으로 이동시킨다.On the other hand, when power is applied to the second coil, the second core, the center core, the second yoke, and the plate constitute a magnetic circuit to move the plunger toward the second core.
상술한 바와 같이 구성된 본 발명은, 보빈의 중단부에 설치된 센터 코어 및 플레이트가 코어 및 요크와 함께 자기회로를 구성하여 자속밀도를 높임으로써 플런저를 이동시키는 흡인력을 증대시킬 수 있다. 따라서 낮은 소비전력으로 높은 응답성을 기대할 수 있고, 액추에이터의 에너지 효율을 향상시킬 수 있다.The present invention constructed as described above can increase the attracting force for moving the plunger by increasing the magnetic flux density by constituting the magnetic circuit together with the core and the yoke together with the center core and the plate provided at the middle portion of the bobbin. Therefore, high response can be expected with low power consumption, and the energy efficiency of the actuator can be improved.
도 1은 본 발명의 일 실시예에 따른 자동차 변속기용 리니어 액추에이터의 단면도.1 is a sectional view of a linear actuator for an automotive transmission according to an embodiment of the present invention;
도 2와 도 3은 본 발명의 일 실시예에 따른 자동차 변속기용 리니어 액추에이터의 작동상태를 도시한 도면.FIG. 2 and FIG. 3 are views showing an operating state of a linear actuator for an automotive transmission according to an embodiment of the present invention; FIG.
첨부된 도면을 참조하여 본 발명에 따른 실시예를 상세히 설명한다. 이하, 본 발명에 따른 실시예를 설명함에 있어, 그리고 각 도면의 구성요소들에 참조부호를 부가함에 있어, 동일한 구성요소들에 대해서는 비록 다른 도면상에 표시되더라도 가능한 한 동일한 부호를 부가하였다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the accompanying drawings, embodiments of the present invention will be described in detail. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1에 도시된 바와 같이, 본 발명의 일 실시예에 따른 자동차 변속기용 리니어 액추에이터는, 액추에이터의 외형을 이루는 케이스(110)와, 케이스(110)의 내부에 설치된 하우징(120)을 포함한다.As shown in FIG. 1, a linear actuator for an automotive transmission according to an embodiment of the present invention includes a case 110 forming an outer shape of an actuator, and a housing 120 installed inside the case 110.
케이스(110)는 일 방향으로 연장된 중공의 원통 형상이다. 케이스(110)는 상단이 개방되고 하단이 밀폐된 형태를 갖는다. 하우징(120)을 포함하는 부품은 케이스(110)의 개방된 상단을 통해 설치되고, 부품의 설치가 완료되면 케이스(110)의 상단을 코킹(caulking)하여 밀봉한다.The case 110 has a hollow cylindrical shape extending in one direction. The case 110 has an open top and a closed bottom. The component including the housing 120 is installed through the open upper end of the case 110 and caulking and sealing the upper end of the case 110 when the installation of the component is completed.
이처럼 케이스(110)의 상단을 코킹 처리할 경우 하우징(120)을 포함하는 부품이 케이스(110)의 내부에서 유동하는 것을 방지할 수 있고, 케이스(110)와 하우징(120) 사이로 이물질이 유입되는 것을 방지할 수 있다. 특히, 케이스(110)와 하우징(120) 사이에 오링(112)을 추가할 경우 이물질의 유입을 더욱 효과적으로 방지할 수 있다.When the upper end of the case 110 is caulked, the component including the housing 120 can be prevented from flowing inside the case 110, and foreign substances can be introduced into the case 110 from between the case 110 and the housing 120 Can be prevented. Particularly, if an O-ring 112 is added between the case 110 and the housing 120, foreign matter can be prevented more effectively.
하우징(120)은 케이스(110)와 동일한 방향으로 연장된 중공의 원통 형상이다. 하우징(120)은 케이스(110)와 달리 상단이 밀폐되고 하단이 개방된 형태를 갖는다. 하우징(120)의 개방된 하단은 하우징(120)의 조립 시 케이스(110)의 하단에 의해 밀폐된다. 하우징(120)의 상단은 상향으로 돌출되고, 그 내부에는 후술할 로드(180)의 이동을 위한 작동공간(122)이 형성된다. 또한, 하우징(120)의 상단에는 후술할 코일(140)에 전원을 공급하기 위한 단자(124)가 돌출된다. 단자(124)는 내부에 변형홀(미도시)이 형성된 프레스 핏 단자일 수 있다.The housing 120 has a hollow cylindrical shape extending in the same direction as the case 110. Unlike the case 110, the housing 120 has an upper end closed and a lower end opened. The open lower end of the housing 120 is sealed by the lower end of the case 110 when the housing 120 is assembled. The upper end of the housing 120 protrudes upward, and an operation space 122 for moving the rod 180, which will be described later, is formed therein. A terminal 124 for supplying power to the coil 140 protrudes from the upper end of the housing 120. The terminal 124 may be a press-fit terminal having a deforming hole (not shown) formed therein.
상술한 하우징(120)의 내부에는 보빈(130)이 설치되고, 보빈(130)의 외주면에는 코일(140)이 감긴다. 또한, 보빈(130)의 상단부, 중단부, 하단부에는 코어부(150) 및 요크부(160)가 설치되고, 보빈(130)의 내부에는 플런저(170) 및 로드(180)가 설치된다. The bobbin 130 is installed inside the housing 120 and the coil 140 is wound on the outer circumferential surface of the bobbin 130. [ A core portion 150 and a yoke portion 160 are provided at an upper end portion, a middle portion and a lower end portion of the bobbin 130 and a plunger 170 and a rod 180 are installed inside the bobbin 130.
보빈(130)은 하우징(120)과 동일한 방향으로 연장된 중공의 원통 형상이다. 보빈(130)의 외주면은 2개의 플랜지(132,134)와 1개의 베플(136)에 의해 2개의 영역으로 구획된다. 즉, 보빈(130)의 상단부에는 제1플랜지(132)가 형성되고, 하단부에는 제2플랜지(134)가 형성되며, 중단부에는 베플(136)이 형성되어 제1플랜지(132)와 제2플랜지(134) 사이를 구획한다. 이때 제1플랜지(132)와 베플(136) 사이 영역에는 제1코일(140a)이 권선되고, 이때 제2플랜지(134)와 베플(136) 사이 영역에는 제2코일(140b)이 권선된다.The bobbin 130 has a hollow cylindrical shape extending in the same direction as the housing 120. The outer circumferential surface of the bobbin 130 is divided into two regions by two flanges 132 and 134 and one baffle 136. The first flange 132 is formed on the upper end of the bobbin 130 and the second flange 134 is formed on the lower end of the bobbin 130. The baffle 136 is formed on the intermediate portion of the bobbin 130, And the flange (134). The first coil 140a is wound around the area between the first flange 132 and the baffle 136 and the second coil 140b is wound around the area between the second flange 134 and the baffle 136. [
베플(136)에는 자기회로를 구성하기 위한 플레이트(160c)가 설치된다. 플레이트(160c)는 자기회로를 구성할 수 있도록 도체로 제작되고, 베플(136)을 따라 연장된 환형으로 형성된다. 이때, 플레이트(160c)는 인서트 사출을 통하여 베플(136)과 일체로 형성될 수 있다.The baffle 136 is provided with a plate 160c for constituting a magnetic circuit. The plate 160c is made of a conductor so as to constitute a magnetic circuit and is formed into an annular shape extending along the baffle 136. [ At this time, the plate 160c may be integrally formed with the baffle 136 through insert injection.
코일(140)은 전원 인가 시 자기장을 발생하는 수단이다. 코일(140)에서 발생한 자기장은 코어부(150) 및 요크부(160)에 의해 유도되어 플런저(170)를 이동시키는데 사용된다. 이러한 코일(140)은, 보빈(130)의 상단부에 권선되는 제1코일(140a)과, 보빈(130)의 하단부에 권선되는 제2코일(140b)로 구성된다.The coil 140 is a means for generating a magnetic field when power is applied. The magnetic field generated in the coil 140 is induced by the core portion 150 and the yoke portion 160 and is used to move the plunger 170. The coil 140 is composed of a first coil 140a wound on the upper end of the bobbin 130 and a second coil 140b wound on the lower end of the bobbin 130. [
보빈(130)에 상단부와 하단부에 감긴 코일(140)의 표면에는 인슐레이션 테이프(미도시)가 테이핑될 수 있다. 인슐레이션 테이프는 코일(140)에 인가된 전류가 외부로 새는 것을 방지하는 역할을 한다.An insulation tape (not shown) may be taped on the surface of the coil 140 wound on the upper and lower ends of the bobbin 130. The insulation tape serves to prevent the current applied to the coil 140 from leaking to the outside.
코어부(150)는 요크부(160)와 함께 자기회로를 구성한다. 즉, 코일(140)에서 발생한 자기장을 유도할 수 있도록 자기회로를 구성한다. 이러한 코어부(150)는, 보빈(130)의 상단부 내측에 결합된 제1코어(150a)와, 보빈(130)의 하단부 내측에 결합된 제2코어(150b)와, 보빈(130)의 중단부 내측에 설치된 센터 코어(150c)로 구성된다.The core portion 150 together with the yoke portion 160 constitute a magnetic circuit. That is, a magnetic circuit is formed to induce a magnetic field generated in the coil 140. The core unit 150 includes a first core 150a coupled to the inside of the upper end of the bobbin 130, a second core 150b coupled to the inside of the lower end of the bobbin 130, And a center core 150c provided in the inner side.
제1코어(150a)와 제2코어(150b)는 동일한 구조와 형상을 갖되, 설치 시 서로 대향하도록 배치된다. 이에, 제1코어(150a)를 일례로 구조 및 형상을 살펴보도록 한다.The first core 150a and the second core 150b have the same structure and shape, but are disposed so as to face each other at the time of installation. Here, the structure and shape of the first core 150a will be described as an example.
제1코어(150a)는 일 방향으로 연장된 원기둥 형상이다. 제1코어(150a)의 중심에는 관통홀(152a)이 형성되고, 관통홀(152a)에는 로드(180)가 관통되게 결합된다. 관통홀(152a)은 대경부와 소경부로 이루어진 다단으로 형성되고, 관통홀(152a)은 대경부에는 로드(180)의 이동을 안내함과 동시에 마찰을 저감하기 위한 부시(154a)가 설치된다.The first core 150a has a columnar shape extending in one direction. A through hole 152a is formed in the center of the first core 150a and a rod 180 is coupled to the through hole 152a. The through hole 152a is formed in a multi-stage structure including a large diameter portion and a small diameter portion. The large diameter portion of the through hole 152a is provided with a bush 154a for guiding the movement of the rod 180 and reducing friction.
제1코어(150a)의 하단에는 자력강화부(156a)가 형성된다. 자력강화부(156a)는 센터 코어(150c) 측으로 연장되고, 그 내부에는 플런저(170)의 상단이 삽입되는 흡인홈(158a)이 형성된다. 이때, 자력강화부(156a)의 단부는 센터 코어(150c) 측으로 갈수록 외경이 줄어드는 테이퍼 형상으로 형성된다.A magnetic force strengthening portion 156a is formed at the lower end of the first core 150a. The magnetic force enhancing portion 156a extends toward the center core 150c and has a suction groove 158a into which the upper end of the plunger 170 is inserted. At this time, the end of the magnetic force enhancing portion 156a is formed into a tapered shape whose outer diameter decreases toward the center core 150c side.
이와 같이, 자력강화부(156a)의 단부를 테이퍼 형상으로 제작할 경우 제1코어(150a)에 의해 유도된 자기장이 자력강화부(156a)의 단부에 집중되고, 자력강화부(156a)의 단부에서 집중된 자기장에 의해 발생한 흡인력을 통해 플런저(170)가 제1코어(150a) 측으로 이동하게 된다.When the end of the magnetic force enhancing portion 156a is tapered, the magnetic field induced by the first core 150a is concentrated at the end of the magnetic force enhancing portion 156a, The plunger 170 is moved toward the first core 150a through the suction force generated by the concentrated magnetic field.
한편, 자력강화부(156a)의 외주면에는 가이드 파이프(190)가 삽입되는 장착홈(159a)이 형성된다. 장착홈(159a)에 삽입된 가이드 파이프(190)는 제1코어(150a)와 센터 코어(150c) 사이에 위치되어 그들의 이격거리를 조절하는 역할을 한다. 이를 통하여, 플런저(170)의 이동거리 및 로드(180)의 스트로크를 제어할 수 있다.On the other hand, a mounting groove 159a into which the guide pipe 190 is inserted is formed on the outer peripheral surface of the magnetic force enhancing portion 156a. The guide pipe 190 inserted in the mounting groove 159a is positioned between the first core 150a and the center core 150c and serves to adjust the spacing distance therebetween. Through this, the movement distance of the plunger 170 and the stroke of the rod 180 can be controlled.
센터 코어(150c)는 일 방향으로 연장된 원기둥 형상이다. 센터 코어(150c)의 중심에는 관통홀(152c)이 형성되고, 관통홀(152c)에는 플런저(170)가 관통되게 결합된다. 센터 코어(150)의 상단 및 하단 외주면에는 가이드 파이프(190)가 삽입되는 장착홈(159c)이 형성된다.The center core 150c has a columnar shape extending in one direction. A through hole 152c is formed at the center of the center core 150c and a plunger 170 is coupled to the through hole 152c. Mounting grooves 159c are formed on the upper and lower outer circumferential surfaces of the center core 150 to insert the guide pipes 190 therein.
상술한 센터 코어(150c)는 제1코일(140a)과 제2코일(140b) 사이에 위치되어 코어부(150)와 요크부(160)에 의해 구성된 자기회로의 자속밀도를 상승시키는 역할을 한다. 이처럼, 자기회로의 자속밀도가 상승할 경우 플런저(170)를 이동시키는 흡인력을 증대되므로, 낮은 소비전력으로 높은 응답성을 기대할 수 있다.The center core 150c described above is positioned between the first coil 140a and the second coil 140b and serves to increase the magnetic flux density of the magnetic circuit constituted by the core portion 150 and the yoke portion 160 . As the magnetic flux density of the magnetic circuit increases, the attracting force for moving the plunger 170 is increased. Thus, high response can be expected with low power consumption.
요크부(160)는 코어부(150)와 함께 코일(140)에서 발생한 자기장을 유도할 수 있도록 자기회로를 구성한다. 요크부(160)는, 보빈(130)의 상단부에 결합된 제1요크(160a)와, 보빈(130)의 하단부에 결합된 제2요크(160b)와, 보빈(130)의 중단부에 설치된 플레이트(160c)로 구성된다.The yoke portion 160 together with the core portion 150 constitutes a magnetic circuit so as to induce a magnetic field generated in the coil 140. The yoke portion 160 includes a first yoke 160a coupled to an upper end of the bobbin 130, a second yoke 160b coupled to a lower end of the bobbin 130, Plate 160c.
제1요크(160a)와 제2요크(160b)는 소정 두께를 가진 환형으로 형성된다. 제1요크(160a)는 제1코어(150a)의 상단에 장착되고, 제2요크(160b)는 제2코어(150b)의 하단에 장착된다. 반면, 플레이트(160c)는 전술한 것처럼 베플(136)의 내부에 설치된다.The first yoke 160a and the second yoke 160b are formed in an annular shape having a predetermined thickness. The first yoke 160a is mounted on the upper end of the first core 150a and the second yoke 160b is mounted on the lower end of the second core 150b. On the other hand, the plate 160c is installed inside the baffle 136 as described above.
상술한 구성 중 플레이트(160c)는 센터 코어(150c)와 동일한 역할을 한다. 즉, 제1코일(140a)과 제2코일(140b) 사이에 위치되어 코어부(150)와 요크부(160)에 의해 구성된 자기회로의 자속밀도를 상승시키는 역할을 한다.Among the above-described structures, the plate 160c plays the same role as the center core 150c. That is, the magnetic flux density of the magnetic circuit, which is positioned between the first coil 140a and the second coil 140b and is formed by the core portion 150 and the yoke portion 160, increases.
플런저(170)는 센터 코어(150c)를 관통하도록 결합되고, 전원 인가 시 코일(140)에서 발생하는 자기장에 의해 왕복운동을 한다. 또한, 로드(180)는 플런저(170)를 관통하도록 결합되며, 플런저(170)와 함께 왕복운동을 한다.The plunger 170 is coupled to penetrate through the center core 150c and reciprocates by a magnetic field generated by the coil 140 when power is applied. In addition, the rod 180 is coupled to penetrate the plunger 170 and reciprocates with the plunger 170.
플런저(170)와 로드(180)는 측면을 통해 삽입된 결합핀(172)에 의해 일체로 이루어져 전원 인가 시 함께 왕복운동을 한다. 이때, 결합핀(172)은 길이방향으로 슬릿(미도시)이 형성된 파이프 형상으로 제작되어, 설치가 용이할 뿐만 아니라 설치 후 플런저(170)와 로드(180)가 확실하게 결합될 수 있다.The plunger 170 and the rod 180 are integrally formed by the engagement pin 172 inserted through the side surface, and reciprocate when the power is applied. At this time, the coupling pin 172 is formed in the shape of a pipe having a slit (not shown) formed in the longitudinal direction, so that the coupling pin 172 is easy to install, and the plunger 170 and the rod 180 can be securely coupled after installation.
플런저(170)의 상단과 하단, 좀 더 상세하게는 플런저(170)의 상부와 하부로 각각 돌출된 로드(180)의 둘레에는 탄성링(174)이 설치된다. 탄성링(174)은 플런저(170)의 왕복운동 시 제1 및 제2코어(150a,150b)의 접촉하여 소음 및 충격을 흡수하는 역할을 한다.An elastic ring 174 is provided around the rod 180 protruding from the upper and lower ends of the plunger 170, and more specifically, the upper and lower portions of the plunger 170, respectively. The elastic ring 174 serves to absorb noise and impact by contacting the first and second cores 150a and 150b when the plunger 170 reciprocates.
로드(180)의 상단과 하단은 제1코어(150a)와 제2코어(150b)를 각각 관통한다. 이때, 제1코어(150a)를 관통한 로드(180)의 상단에는 위치 검출용 마그넷(182)이 설치된다. 위치 검출용 마그넷(182)의 상부에는 이탈을 방지하기 위한 푸시 너트(184)가 결합된다.The upper and lower ends of the rod 180 pass through the first core 150a and the second core 150b, respectively. At this time, a position detecting magnet 182 is provided on the upper end of the rod 180 passing through the first core 150a. A push nut 184 is coupled to the upper portion of the position detecting magnet 182 to prevent the magnet 182 from escaping.
도 2와 도 3을 참조하여 본 실시예에 따른 리니어 액추에이터의 작동과정을 살펴보도록 한다.The operation of the linear actuator according to the present embodiment will be described with reference to FIGS. 2 and 3. FIG.
도 2에 도시된 바와 같이, 제1코일(140a)에 전원이 인가될 경우 제1코어(150a), 센터 코어(150c), 제1요크(160a), 플레이트(160c)에 의해 자기회로가 구성된다. 즉, 전원 인가 시 제1코일(140a)에서 발생한 자기장이 제1코어(150a), 센터 코어(150c), 제1요크(160a), 플레이트(160c)에 의해 유도되고, 제1코어(150a)의 하단으로 돌출된 테이퍼 형상의 자력강화부(156a)에 집중된다. 자력강화부(156a)에서 집중된 자기장은 흡인력을 발생시켜 플런저(170)를 이동시킨다. 따라서 플런저(170)가 제1코어(150a) 측으로 상승하며 로드(180)가 케이스(110)의 내부로 인입된다.2, when a power is applied to the first coil 140a, a magnetic circuit is constituted by the first core 150a, the center core 150c, the first yoke 160a, and the plate 160c. do. That is, when a power is applied, a magnetic field generated in the first coil 140a is induced by the first core 150a, the center core 150c, the first yoke 160a, and the plate 160c, Shaped magnetic force strengthening portion 156a protruding to the lower end of the tapered portion 156a. The magnetic field concentrated at the magnetic force enhancing portion 156a generates an attracting force to move the plunger 170. [ Accordingly, the plunger 170 rises to the first core 150a side, and the rod 180 is drawn into the case 110.
반면, 제2코일(140b)에 전원이 인가될 경우 제2코어(150b), 센터 코어(150c), 제2요크(160b), 플레이트(160c)에 의해 자기회로가 구성된다. 다시 말해, 전원 인가 시 제2코일(140b)에서 발생한 자기장이 제2코어(150b), 센터 코어(150c), 제2요크(160b), 플레이트(160c)에 의해 유도되고, 제2코어(150b)의 상단으로 돌출된 테이퍼 형상의 자력강화부(156b)에 집중된다. 자력강화부(156b)에서 집중된 자기장은 흡인력을 발생시켜 플런저(170)를 이동시킨다. 따라서 플런저(170)가 제2코어(150b) 측으로 하강하며 로드(180)가 케이스(110)의 외부로 인출된다(도 3 참조).On the other hand, when power is applied to the second coil 140b, a magnetic circuit is formed by the second core 150b, the center core 150c, the second yoke 160b, and the plate 160c. In other words, when a power is applied, a magnetic field generated in the second coil 140b is guided by the second core 150b, the center core 150c, the second yoke 160b, and the plate 160c, and the second core 150b Shaped magnetic reinforcing portion 156b protruding to the upper end of the tapered magnetic force strengthening portion 156b. The magnetic field concentrated in the magnetic force enhancing portion 156b generates a suction force to move the plunger 170. [ Thus, the plunger 170 descends toward the second core 150b, and the rod 180 is drawn out of the case 110 (see FIG. 3).
이상 본 발명을 바람직한 실시예를 통하여 설명하였는데, 상술한 실시예는 본 발명의 기술적 사상을 예시적으로 설명한 것에 불과하며, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 다양한 변화가 가능함은 이 분야에서 통상의 지식을 가진 자라면 이해할 수 있을 것이다. 따라서 본 발명의 보호범위는 특정 실시예가 아니라 특허청구범위에 기재된 사항에 의해 해석되어야 하며, 그와 동등한 범위 내에 있는 모든 기술적 사상도 본 발명의 권리범위에 포함되는 것으로 해석되어야 할 것이다.While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Those skilled in the art will understand. Therefore, the scope of protection of the present invention should be construed not only in the specific embodiments but also in the scope of claims, and all technical ideas within the scope of the same shall be construed as being included in the scope of the present invention.
Claims (8)
- 일 방향으로 연장된 중공의 보빈;A hollow bobbin extending in one direction;상기 보빈의 양단부 외주면에 각각 권선되고 전원 인가 시 자기장을 발생시키는 제1 및 제2코일;First and second coils wound on outer circumferential surfaces of both ends of the bobbin and generating a magnetic field when power is applied;상기 보빈의 양단부 내측에 각각 설치된 제1 및 제2코어와, 상기 보빈의 중단부 내측에 설치된 센터 코어로 구성된 코어부;First and second cores provided inside the both ends of the bobbin, and a center core provided inside the middle of the bobbin;상기 보빈의 양단부에 각각 설치된 제1 및 제2요크와, 상기 보빈의 중단부에 설치된 플레이트로 구성되는 요크부;First and second yokes provided at both ends of the bobbin, and a plate provided at a middle portion of the bobbin;상기 센터 코어를 관통하도록 결합되고 전원 인가 시 상기 코일에서 발생하는 자기장에 의해 왕복운동을 하는 플런저; 및A plunger coupled through the center core and reciprocating by a magnetic field generated by the coil when power is applied; And상기 플런저를 관통하도록 결합되고 상기 코어부를 관통하여 슬라이딩하는 로드를 포함하고,And a rod coupled through the plunger and sliding through the core portion,상기 제1코일에 전원이 인가될 경우 상기 제1코어, 상기 센터 코어, 상기 제1요크, 상기 플레이트가 자기회로를 구성하여 상기 플런저를 상기 제1코어 측으로 이동시키고,Wherein when the power is applied to the first coil, the first core, the center core, the first yoke, and the plate constitute a magnetic circuit to move the plunger toward the first core,상기 제2코일에 전원이 인가될 경우 상기 제2코어, 상기 센터 코어, 상기 제2요크, 상기 플레이트가 자기회로를 구성하여 상기 플런저를 상기 제2코어 측으로 이동시키는 것을 특징으로 하는 자동차 변속기용 리니어 액추에이터.Wherein when the power is applied to the second coil, the second core, the center core, the second yoke, and the plate constitute a magnetic circuit to move the plunger toward the second core. Actuator.
- 청구항 1에 있어서,The method according to claim 1,상기 제1코어와 상기 센터 코어 사이, 그리고 상기 제2코어와 상기 센터 코어 사이에는 가이드 파이프가 설치된 것을 특징으로 하는 자동차 변속기용 리니어 액추에이터.And a guide pipe is installed between the first core and the center core, and between the second core and the center core.
- 청구항 2에 있어서,The method of claim 2,상기 제1코어와 상기 제2코어에는 상기 센터 코어 측으로 연장된 자력강화부가 형성되고, 상기 자력강화부의 내부에는 상기 플런저의 일부가 삽입되는 흡인홈이 형성된 것을 특징으로 하는 자동차 변속기용 리니어 액추에이터.Wherein the first core and the second core are formed with a magnetic force strengthening portion extending toward the center core side and a suction groove into which a part of the plunger is inserted is formed inside the magnetic force strengthening portion.
- 청구항 3에 있어서,The method of claim 3,상기 자력강화부의 단부는 상기 센터 코어 측으로 갈수록 외경이 줄어드는 테이퍼 형상인 것을 특징으로 하는 자동차 변속기용 리니어 액추에이터.And the end portion of the magnetic force enhancing portion has a tapered shape whose outer diameter decreases toward the center core side.
- 청구항 4에 있어서,The method of claim 4,상기 자력강화부의 외주면에는 상기 가이드 파이프가 삽입되는 장착홈이 형성된 것을 특징으로 하는 자동차 변속기용 리니어 액추에이터.And a mounting groove into which the guide pipe is inserted is formed on an outer circumferential surface of the magnetic force enhancing portion.
- 청구항 5에 있어서,The method of claim 5,상기 센터 코어의 외주면에는 상기 가이드 파이프가 삽입되는 장착홈이 형성된 것을 특징으로 하는 자동차 변속기용 리니어 액추에이터.And a mounting groove into which the guide pipe is inserted is formed on an outer circumferential surface of the center core.
- 청구항 1에 있어서,The method according to claim 1,상기 보빈의 중단 외주면에는 상기 제1코일이 권선되는 영역과 상기 제2코일이 권선되는 영역을 구획하는 베플이 형성되고,Wherein a bell is formed on an outer circumferential surface of the bobbin for stopping the area where the first coil is wound and the area where the second coil is wound,상기 플레이트가 상기 베플에 설치되는 것을 특징으로 하는 자동차 변속기용 리니어 액추에이터.And the plate is installed on the baffle.
- 청구항 1에 있어서,The method according to claim 1,상기 플런저의 양단부에는 상기 코어부와의 접촉 시 소음 및 충격을 흡수하는 탄성링이 설치된 것을 특징으로 하는 자동차 변속기용 리니어 액추에이터.Wherein an elastic ring for absorbing noises and shocks is provided at both end portions of the plunger when the plunger is in contact with the core portion.
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JP2003230266A (en) * | 2002-02-01 | 2003-08-15 | Sofutoronikusu Kk | Motor with reducer |
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JP2010063313A (en) * | 2008-09-05 | 2010-03-18 | Toshiba Mach Co Ltd | Linear motor |
KR20100003612U (en) * | 2008-09-26 | 2010-04-05 | 한국하이테크공업(주) | linear solenoid |
KR20170084553A (en) * | 2016-01-12 | 2017-07-20 | 엘지이노텍 주식회사 | Solenoid device |
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KR101039921B1 (en) | 2009-07-28 | 2011-06-09 | 현대자동차주식회사 | Shifting Apparatus for Double Clutch Transmission |
KR101233061B1 (en) | 2012-08-24 | 2013-02-15 | 주식회사 유니크 | Linear actuator |
KR20170096249A (en) * | 2016-02-15 | 2017-08-24 | 주식회사 유니크 | Linear actuator |
KR101736103B1 (en) * | 2016-11-03 | 2017-05-17 | 주식회사 유니크 | Linear actuator for vehicle transmission |
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JP2003230266A (en) * | 2002-02-01 | 2003-08-15 | Sofutoronikusu Kk | Motor with reducer |
JP2009047139A (en) * | 2007-08-22 | 2009-03-05 | Twinbird Corp | Stirling cycle engine |
JP2010063313A (en) * | 2008-09-05 | 2010-03-18 | Toshiba Mach Co Ltd | Linear motor |
KR20100003612U (en) * | 2008-09-26 | 2010-04-05 | 한국하이테크공업(주) | linear solenoid |
KR20170084553A (en) * | 2016-01-12 | 2017-07-20 | 엘지이노텍 주식회사 | Solenoid device |
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