WO2016087927A2 - 传感器、直线驱动装置、排气再循环控制阀及发动机 - Google Patents

传感器、直线驱动装置、排气再循环控制阀及发动机 Download PDF

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Publication number
WO2016087927A2
WO2016087927A2 PCT/IB2015/002284 IB2015002284W WO2016087927A2 WO 2016087927 A2 WO2016087927 A2 WO 2016087927A2 IB 2015002284 W IB2015002284 W IB 2015002284W WO 2016087927 A2 WO2016087927 A2 WO 2016087927A2
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WO
WIPO (PCT)
Prior art keywords
pointer
sensor
linear drive
movable member
circuit structure
Prior art date
Application number
PCT/IB2015/002284
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English (en)
French (fr)
Other versions
WO2016087927A3 (zh
Inventor
曹向广
赵龙生
杜晓林
宋静静
Original Assignee
大陆汽车有限公司
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.)
Filing date
Publication date
Application filed by 大陆汽车有限公司 filed Critical 大陆汽车有限公司
Priority to EP18173612.5A priority Critical patent/EP3399282A1/en
Priority to KR1020177014959A priority patent/KR101959235B1/ko
Priority to EP15831228.0A priority patent/EP3228991A2/en
Priority to JP2017529684A priority patent/JP6479187B2/ja
Publication of WO2016087927A2 publication Critical patent/WO2016087927A2/zh
Publication of WO2016087927A3 publication Critical patent/WO2016087927A3/zh
Priority to US15/605,084 priority patent/US20170261338A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/08—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
    • 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
    • F02M26/45—Sensors specially adapted for EGR systems
    • F02M26/48—EGR valve position sensors
    • 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
    • F02M26/67—Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears

Definitions

  • the utility model relates to a sensor, a linear driving device, an exhaust gas recirculation control valve and an engine. Background technique
  • valve devices that are precisely controlled, such as exhaust gas recirculation control valves used in engine exhaust gas recirculation systems, are often required.
  • a linear drive that can be precisely controlled is required in such a valve device and it is desirable that such a valve device be as lightweight and compact as possible.
  • Such a linear drive and valve arrangement are disclosed, for example, in CN203442281U.
  • the exhaust gas recirculation control valve is controlled by a sensor to detect the current position of the output link and transmit the current position to the control device.
  • the technical problem to be solved by the present invention is to propose a sensor, a linear drive device and a corresponding exhaust gas recirculation control valve, which solves the problem that the sensor signal is not accurate due to the rotation of the link assembly.
  • a sensor for detecting a position of a movable member comprising a pointer rigidly coupled to the movable member and a circuit structure interacting with the pointer, wherein The components of the circuit structure are disposed on the side of the circuit structure opposite the pointer.
  • the circuit structure is a printed circuit board.
  • the pointer is rigidly coupled to the movable member by a bracket. Further preferably, the pointer is fixed to the bracket by insert molding. Further preferably, the bracket is fixed to the movable member by insert molding. Further preferably, the end face of the pointer facing the circuit structure has a circular arc shape. Further preferably, the sensor is an inductive sensor.
  • a linear driving device comprising: a motor; a reduction gear stage, the reduction gear stage includes a pinion fixedly coupled to the output shaft of the motor and a transmission gear meshing with the pinion; a linear transmission stage, a linear transmission stage converts a rotational motion of the transmission gear into a linear motion of the movable member; a sensor for detecting a position of the movable member, the sensor including a pointer rigidly coupled to the movable member and the pointer
  • the functional circuit structure wherein the components of the circuit structure are disposed on a side of the circuit structure opposite to the pointer.
  • the circuit structure is a printed circuit board.
  • the pointer is rigidly coupled to the movable member by a bracket.
  • the pointer is fixed to the bracket by insert molding.
  • the bracket is fixed to the movable member by insert molding.
  • the end face of the pointer facing the circuit structure has a circular arc shape.
  • the sensor is an inductive sensor.
  • the transmission gear is a sector gear.
  • the linear drive comprises a reset system for electroless return, the reset system comprising a spring that directly or indirectly applies a resetting action to the drive gear.
  • the present invention also relates to an exhaust gas recirculation control valve including the above linear drive device and an engine including the exhaust gas recirculation control valve.
  • Figure 1 shows a side view of the basic structure of a sensor according to the invention.
  • Figure 2 shows a top view of the basic structure of a sensor according to the invention.
  • Figure 3 shows a prior art sensor pointer and printed circuit board in which the pointer is not displaced.
  • Figure 4 shows a prior art sensor pointer and printed circuit board in which the pointer has been shifted.
  • Figure 5 shows a sensor pointer and a printed circuit board in accordance with the present invention in which the pointer is not shifted.
  • Figure 6 shows a sensor pointer and a printed circuit board in accordance with the present invention, wherein the pointer has been shifted Bit.
  • FIG. 7 shows a linear drive device in accordance with the present invention. detailed description
  • the sensor 3 is an inductive sensor comprising a pointer 4 and a circuit structure such as a printed circuit board 12.
  • the pointer 4 is mounted on the movable member 7 via a bracket 10 such as plastic.
  • the printed circuit board 12 is energized, and the feedback voltage of the printed circuit board 12 is affected by the position of the pointer 4, thereby outputting a voltage signal indicating the position of the pointer 4.
  • the components 13 of the printed circuit board 12 are usually disposed on the side of the printed circuit board 12 facing the pointer 4 (see Figs. 3 and 4).
  • the disadvantage of this solution is that, on the one hand, the component 13 hinders the movement of the pointer 4 and on the other hand causes scratch damage.
  • the components 13 of the printed circuit board 12 are disposed on the side of the printed circuit board 12 opposite the pointer 4 (see FIGS. 5 and 6), thereby avoiding motion interference. At the same time, the 1 f component is protected from scratching.
  • the output of the sensor 3 is the position of the pointer 4 moving in the y direction (see Fig. 1), but the relative positional changes of the pointer 4 and the printed circuit board 12 of the sensor 3 in the X and z directions may also interfere with the sensing.
  • the output of the device 3 is such that the output of the sensor 3 has an error with respect to the actual y-direction position of the pointer 4; the existing plan of the planar pointer 4, after the actuator is programmed, the link and the fixing are unavoidable due to the rotation of the adjustment lever
  • the pointer 4 on the link is deflected such that the relative position of the X and z directions between the printed circuit board 12 of the sensor 3 and the pointer 4 changes within the sensing range, ultimately resulting in an error in the output and the actual.
  • the large rotation of the movable member also causes the pointer 4 to contact the printed circuit board 12 of the sensor 3 to scratch, destroying the components on the sensor 3, and causing the sensor 3 to be broken.
  • the existing pointer 4 is fixed by the plastic part and the movable part by the interference pressure ⁇ / snap / screw, etc., but the plastic part will be loose due to temperature, vibration, and other harsh environments, resulting in signal problems. .
  • the existing pointer 4 is usually fixed to the plastic by gluing/printing, but the process is complicated and the cost is high.
  • the end face of the pointer 4 facing the printed circuit board 12 is curved, as shown in Figs. 5 and 6. Since the end face is orphaned, the influence of the rotation of the link on the signal on the linear position is reduced, so that the error of the output of the sensor 3 and the actual position of the pointer 4 is greatly reduced, and the sensing accuracy is improved.
  • the arcuate pointer 4 allows for a large rotation of the yoke and does not touch the squeegee sensor 3.
  • the pointer 4 can be fixed by insert molding, for example, the pointer 4 and the bracket 10 can be fixed by insert molding.
  • the process is simpler, more reliable, and less costly.
  • linear driving device according to the present invention will be described, but the present invention is not limited thereto.
  • the linear drive according to the present invention can be used in any device that requires small precise linear control, such as various valves and actuators.
  • the linear drive device 1 comprises a motor 2, a first gear stage (deceleration gear stage) and a second gear stage (linear gear stage).
  • the linear drive device linearly moves the movable member 7 by the driving of the motor 2.
  • the movable part can be designed, for example, as an output link.
  • a housing 11 and a corresponding sealing system are provided.
  • the first transmission stage i.e., the reduction transmission stage, includes a pinion 5 fixed to the motor output shaft and a transmission gear 6 meshing with the pinion 5.
  • the second transmission stage is a linear transmission stage that converts the rotational motion of the transmission gear 6 into a linear motion of the movable member 7.
  • the second transmission stage includes a helical groove 8 formed in the transmission gear 6, a follower 9 received in the groove 8, and a movable member 7 fixedly coupled to the follower 9.
  • the movable member 7 is disposed in a kit (not shown) and thus can only perform up and down linear motion.
  • the transmission gear 6 rotates, the follower 9 is displaced along the groove 8, and the follower 9 moves up and down due to the spiral shape of the groove 8, thereby driving the movable member 7 to move up and down. .
  • the linear transmission preferably further comprises a reset system for electroless return, not shown.
  • a reset system for electroless return It is well known that drive and return can be achieved by driving in two opposite directions when the motor is energized. However, when the motor is de-energized (for example due to a fault or other cause), it is desirable to have the reset system returned to the initial position.
  • the reset system includes a spring that directly or indirectly applies a resetting action to the drive gear 6.
  • the linear drive unit 1 further comprises a sensor 3 according to the invention for detecting the position of the movable member, the movable member 7, and transmitting the position to the control device to control the exhaust recirculation control valve.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Abstract

本实用新型涉及传感器、直线驱动装置、排气再循环控制阀及发动机。该传感器（3）用于对可动部件的位置进行检测，该传感器包括与所述可动部件刚性连接的指针（4）和与该指针（4）相互作用的电路结构。根据本实用新型，所述电路结构的元器件（13）设置在该电路结构与指针（4）相背的一侧上。

Description

说 明 书
传感器、 直线驱动装置、 排气再循环控制阀及发动机
技术领域
本实用新型涉及传感器、直线驱动装置、排气再循环控制阀及发动机。 背景技术
在工业、 例如汽车工业中， 往往需要能精确控制的阀装置， 例如用在 发动机排气再循环系统中的排气再循环控制阀。 在这样的阀装置中需要能 精确控制的直线驱动装置并且希望这种阀装置尽可能的轻量并且小型化。
这种直线驱动装置及阀装置例如在 CN203442281U中有所公开。 其中 通过传感器来检测输出连杆的当前位置并且将该当前位置传送给控制装置 从而对排气再循环控制阀进行控制。
但是， 当整个连杆組件转动时， 传感器指针也会转动， 也就是说关于 直线位置的信号会受到指针转动干扰。 因而存在连杆組件转动导致的传感 器信号不精确的问题。 实用新型内容
本实用新型要解决的技术问题是， 提出传感器、 直线驱动装置及相应 的排气再循环控制阀， 其解决了连杆组件转动导致的传感器信号不精确的 问题。
根据本实用新型提出一种传感器， 所述传感器用于对可动部件的位置 进行检测， 所述传感器包括与所述可动部件刚性连接的指针和与该指针相 互作用的电路结构， 其中， 所述电路结构的元器件设置在该电路结构与指 针相背的一侧上。
根据一种优选实施方式， 所述电路结构是印制电路板。 另外优选地， 所述指针通过一托架与所述可动部件刚性连接。 另外优选地， 所述指针以 嵌件注塑的方式固定在所述托架上。 另外优选地， 所述托架以嵌件注塑的 方式固定在所述可动部件上。 另外优选地， 所述指针的朝向电路结构的端 面为圆弧形。 另外优选地， 所述传感器是感应式传感器。
根据本实用新型提出一种直线驱动装置， 包括： 电机； 减速传动级， 该减速传动级包括与电机的输出轴固定连接的小齿轮和与该小齿轮相啮合 的传动齿轮； 直线传动级， 该直线传动级将所述传动齿轮的转动运动转换 成可动部件的直线运动； 用于检测所述可动部件的位置的传感器， 所述传 感器包括与可动部件刚性连接的指针和与该指针相互作用的电路结构， 其 中， 所述电路结构的元器件设置在该电路结构与指针相背的一侧上。
根据一种优选实施方式， 所迷电路结构是印制电路板。 另外优选地， 所述指针通过一托架与所述可动部件刚性连接。 另外优选地， 所述指针以 嵌件注塑的方式固定在托架上。 另外优选地， 所述托架以嵌件注塑的方式 固定在可动部件上。 另外优选地， 所述指针的朝向电路结构的端面为圆弧 形。 另外优选地， 所述传感器是感应式传感器。 另外优选地， 所述传动齿 轮是一扇形齿轮。 另外优选地， 所述直线驱动装置包括用于无电回位的复 位系统，所述复位系统包括直接或间接地对传动齿轮施加复位作用的弹簧。
本实用新型还涉及一种包括上述直线驱动装置的排气再循环控制阀以 及包括该排气再循环控制阀的发动机。 附图说明
图 1示出根据本实用新型的传感器的基本结构的側视图。
图 2示出根据本实用新型的传感器的基本结构的俯视图。
图 3示出现有技术中的传感器指针及印制电路板， 其中指针未移位。 图 4示出现有技术中的传感器指针及印制电路板， 其中指针已移位。 图 5示出根据本实用新型的传感器指针及印制电路板， 其中指针未移 位。
图 6示出根据本实用新型的传感器指针及印制电路板， 其中指针已移 位。
图 7示出根据本实用新型的直线驱动装置。 具体实施方式
下面参照附图描述根据本实用新型的实施例的传感器、直线驱动装置、 排气再循环控制阀及发动机。 在下面的描述中， 阐述了许多具体细节以便 使所属技术领域的技术人员更全面地了解本实用新型。 但是， 对于所属技 术领域内的技术人员明显的是， 本实用新型的实现可不具有这些具体细节 中的一些。 此外， 应当理解的是， 本实用新型并不限于所介绍的特定实施 例。 相反， 可以考虑用下面的特征和要素的任意組合来实施本实用新型， 而无论它们是否涉及不同的实施例。 因此， 下面的方面、 特征、 实施例和 优点仅作说明之用而不应被看作是权利要求的要素或限定， 除非在权利要 求中明确提出。
图 1和图 2示出了根据本实用新型的、 用于对可动部件 7的位置进行 检测的传感器 3的基本结构。 传感器 3是一种感应式传感器， 其包括指针 4和电路结构、例如印制电路板 12。指针 4通过例如塑料的托架 10安装在 可动部件 7上。在工作时， 为印制电路板 12通电， 通过指针 4的位置来影 响印制电路板 12的反馈电压， 从而输出表示指针 4位置的电压信号。
在现有技术中， 印制电路板 12的各元器件 13通常设置在该印制电路 板 12与指针 4相面对的一侧上 （见图 3和图 4) 。 该方案的缺点在于， 一 方面元器件 13妨碍指针 4的运动， 另一方面会引起刮擦伤害。
因此， 本实用新型中提出： 印制电路板 12的各元器件 13设置在该印 制电路板 12与指针 4相背的一侧上 （见图 5和图 6) ， 从而在避免运动干 涉的同时避免1 f元器件受到刮擦伤害。
另一方面，在现有技术中通常使用端面为平面的指针（见图 3和图 4) , 但这种指针具有如下缺点：
1. 传感器 3的输出是指针 4沿 y向 （见图 1) 移动的位置， 但是指针 4与传感器 3的印制电路板 12的 X向和 z向的相对位置变化也会干扰传感 器 3的输出，使得传感器 3的输出相对于实际的指针 4的 y向位置有误差； 现存的平面指针 4的方案， 在执行器编程之后， 由于调节杆的转动无法避 免而使得连杆及固定在连杆上的指针 4偏转， 从而使得在感应范围内， 传 感器 3的印制电路板 12与指针 4之间 X向和 z向的相对位置改变，最终导 致输出与实际会产生误差。
2. 可动部件的较大幅度的转动也会使指针 4与传感器 3的印制电路板 12接触刮擦， 破坏传感器 3上的零部件， 导致传感器 3被破坏。
3. 现有的指针 4是通过塑料件与可动部件通过过盈压^/卡扣 /螺钉等 方式固定， 但由于塑料件受温度影响、 经受振动等恶劣环境会松脱， 导致 信号出现问题。
4. 现有的指针 4 与塑料的固定一般通过胶粘 /印刷等方式， 但工艺复 杂， 成本较高。
因此，本实用新型中提出指针 4的朝向印制电路板 12的端面为弧形的， 见图 5和图 6。 由于该端面为孤形， 因而连杆的转动对关于直线位置的信 号的影响降低， 所以大大减小了传感器 3输出与指针 4实际位置的误差， 提高了感应精度。 而圆弧状的指针 4允许调节軒较大幅度的转动， 不会接 触刮擦传感器 3。
另外， 利用嵌件注塑的方法来固定指针 4、 例如指针 4和托架 10都可 以通过嵌件注塑的方法固定。 因此， 工艺更简单， 可靠性更高， 成本也降 低了。
Figure imgf000005_0001
例对根据本实用新型的直线驱动装置进行说明，但本实用新型并不限于此。 根据本实用新型的直线驱动装置可以用于任何需要小的精确的直线控制的 设备、 例如各种阀和致动器。
图 7中示出了直线驱动装置。 直线驱动装置 1包括电机 2、 第一传动 级 （减速传动级） 和第二传动级 （直线传动级） 。 该直线驱动装置通过电 机 2的驱动而实现可动部件 7的直线运动。 在此， 该可动部件例如可以设 计成一输出连杆。 为避免灰尘或其它杂物进入而损害该传动装置，设有壳体 11及相应的 密封系统。 第一传动级、 即减速传动级包括与电机输出轴固连的小齿轮 5 和与该小齿轮 5啮合的传动齿轮 6。 当电机 1运行时驱动小齿轮 5转动， 从而使与小齿轮 5啮合的传动齿轮 6转动。
第二传动级是将传动齿轮 6的转动运动转化成可动部件 7的直线运动 的直线传动级。 第二传动级包括形成在传动齿轮 6上的螺旋状的沟槽 8、 接纳在该沟槽 8中的随动件 9以及与该随动件 9固定连接的可动部件 7。
可动部件 7设置在一套件（未示出） 中因而只能进行上、 下直线运动。 当传动齿轮 6转动时， 随动件 9沿着沟槽 8移位， 由于该沟槽 8的螺旋形 形状而使该随动件 9上、 下移动， 从而带动可动部件 7上、 下移动。
为了在电机 2出现故障或者在失电的情况下使可动部件 7仍能复位到 初始位置，该直线传动装置优选还包括未示出的用于无电回位的复位系统。 众所周知的是， 当电机通电时通过其在两个相反方向上的驱动可以实现驱 动和回位。 但是当电机断电 （例如由于故障或其它原因） 时， 希望传动装 置仍能返回到初始位置中便需要这种复位系统。 所迷复位系统包括直接或 间接地对传动齿轮 6施加复位作用的弹簧。
直线驱动装置 1还包含根据本实用新型的传感器 3， 其用于检测可动 部件、 即可动部件 7的位置并且将该位置传送给控制装置从而对排气再循 环控制阀进行控制。
虽然本实用新型已以较佳实施例披露如上， 但本实用新型并非限定于 此。 任何本领域技术人员， 在不脱离本实用新型的精神和范围内所作的各 种更动与修改， 均应納入本实用新型的保护范围内， 因此本实用新型的保 护范围应当以权利要求所限定的范围为准。 附图标记表
1 直线驱动装置
2 电机
3 传感器 指针 小齿轮 传动齿轮 可动部件 沟槽 随动件 托架 壳体 印制电路板 元器件

Claims

权 利 要 求 书
1. 一种传感器 （3) ， 所述传感器 （3) 用于对可动部件 （7) 的位 置进行检测， 所述传感器 （3) 包括与所述可动部件 （7) 刚性连接的指针
(4) 和与该指针 （4) 相互作用的电路结构， 其特征在于， 所迷电路结构 的元器件 （13) 设置在该电路结构与指针 （4) 相背的一侧上。
2. 根据权利要求 1所述的传感器， 其特征在于， 所述电路结构是印 制电路板 (12) o
3. 根据权利要求 1所述的传感器， 其特征在于， 所述指针 （4) 通 过一托架 （10) 与所述可动部件 （7) 刚性连接。
4. 根据权利要求 3所述的传感器， 其特征在于， 所述指针 （4) 以 嵌件注塑的方式固定在所述托架 （10) 上。
5. 根据权利要求 3所述的传感器， 其特征在于， 所述托架 （10) 以 嵌件注塑的方式固定在所述可动部件 （7) 上。
6. 根据权利要求 1所述的传感器， 其特征在于， 所述指针 （4) 的 朝向电路结构的端面为圆孤形。
7. 根据权利要求 1所述的传感器， 其特征在于， 所述传感器 （3) 是感应式传感器。
8. 一种直线驱动装置 （1) ， 包括：
电机 （2) ；
减速传动级，该减速传动级包括与电机的输出轴固定连接的小齿轮（5) 和与该小齿轮 （5) 相啮合的传动齿轮 （6) ；
直线传动级， 该直线传动级将所迷传动齿轮（6)的转动运动转换成可 动部件 （7) 的直线运动；
用于检测所述可动部件 （7) 的位置的传感器 （3) ， 所述传感器 （3) 包括与可动部件（7) 刚性连接的指针（4)和与该指针（4) 相互作用的电 路结构，
其特征在于， 所述电路结构的元器件（13)设置在该电路结构与指针（4) 相背的一 侧上。
9. 根据权利要求 8所述的直线驱动装置， 其特征在于， 所述电路结 构是印制电路板 （12) 。
10. 根据权利要求 8所述的直线驱动装置，其特征在于，所述指针（4) 通过一托架 （10) 与所述可动部件 （7) 刚性连接。
11. 根据权利要求 10所述的直线驱动装置， 其特征在于， 所述指针 (4) 以嵌件注塑的方式固定在托架 （10) 上。
12. 根据权利要求 10所述的直线驱动装置， 其特征在于， 所述托架 (10) 以嵌件注塑的方式固定在可动部件 （7) 上。
13. 根摒权利要求 8所述的直线驱动装置，其特征在于，所述指针（4) 的朝向电路结构的端面为圆孤形。
14. 根据权利要求 8所述的直线驱动装置， 其特征在于， 所述传感器 (3) 是感应式传感器。
15. 根据权利要求 8所述的直线驱动装置， 其特征在于， 所述传动齿 轮 （6) 是一扇形齿轮。
16. 根据权利要求 8所述的直线驱动装置， 其特征在于， 所述直线驱 动装置包括用于无电回位的复位系统， 所述复位系统包括直接或间接地对 传动齿轮 （6) 施加复位作用的弹簧。
17. 一种用在发动机的排气再循环回路中的排气再循环控制阀， 其特 征在于，所述排气再循环控制阀包括根据权利要求 8~16中任一项所述的直 线驱动装置 （1) 。
18. 一种发动机， 该发动机包括根据权利要求 17所述的排气再循环 控制阀。
PCT/IB2015/002284 2014-12-04 2015-12-04 传感器、直线驱动装置、排气再循环控制阀及发动机 WO2016087927A2 (zh)

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