WO2023159542A1 - 执行器和用于执行器的制造方法 - Google Patents

执行器和用于执行器的制造方法 Download PDF

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Publication number
WO2023159542A1
WO2023159542A1 PCT/CN2022/078190 CN2022078190W WO2023159542A1 WO 2023159542 A1 WO2023159542 A1 WO 2023159542A1 CN 2022078190 W CN2022078190 W CN 2022078190W WO 2023159542 A1 WO2023159542 A1 WO 2023159542A1
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Prior art keywords
sensor
sensor assembly
actuator
protector
housing
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PCT/CN2022/078190
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English (en)
French (fr)
Inventor
黄宁
罗培培
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舍弗勒技术股份两合公司
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Priority to PCT/CN2022/078190 priority Critical patent/WO2023159542A1/zh
Publication of WO2023159542A1 publication Critical patent/WO2023159542A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations

Definitions

  • the invention relates to the technical field of actuators.
  • the invention relates to an actuator and a manufacturing method for the actuator.
  • An actuator is a device used to provide driving force to control mechanical movement.
  • the actuator can include components such as a housing, a push rod and a driving mechanism.
  • the driving mechanism is, for example, an electromagnetic driver such as a solenoid device, and may be other types of drivers.
  • the driving mechanism is accommodated in the casing and can generate a driving force to push the push rod to move relative to the casing.
  • the moving push rod can provide driving force to other mechanical devices. In order to monitor the operating state of the actuator, it is often necessary to arrange various sensor elements in the actuator.
  • FIG. 1 shows an electromagnetic actuator for a variable valve lift (CSS) system, which has two push rods 2 that are respectively movable relative to a housing 1'.
  • CCS variable valve lift
  • a sensor assembly is arranged between the two push rods 2 .
  • the sensor assembly may include, for example, a magnet 4 for generating a static magnetic field and a Hall sensor 5 for sensing changes in the static magnetic field.
  • a magnet 4 for generating a static magnetic field
  • Hall sensor 5 for sensing changes in the static magnetic field.
  • other types of sensor assemblies could also be used.
  • the sensor assembly is usually first installed on the driving mechanism 3 such as a solenoid device (as shown in Figure 2a), and then formed on the outside of the driving mechanism 3 and the sensor assembly through an overmolding process.
  • Housing 1' (shown in Figure 2b).
  • the housing 1' wraps the sensor assembly together (circled in Fig. 2b).
  • the sensor assembly needs to be exposed to extreme environmental conditions such as high temperature (e.g. up to 300°C), high pressure (e.g. casting pressure up to 1250 bar), which makes the sensor assembly may occur during the manufacturing process of the actuator.
  • damage For example, Hall sensors may be damaged and magnets may be demagnetized. Damaged sensor components do not function properly, resulting in high scrap rates. Moreover, some of such damages cannot be reliably detected after the housing 1 ′ is formed, and damaged actuators may fail once they are put into use.
  • the technical problem to be solved by the present invention is to provide an actuator and a manufacturing method capable of reducing the damage risk of the sensor assembly.
  • the actuator includes a housing, a push rod, a driving mechanism and a sensor assembly.
  • the driving mechanism is installed in the housing and can drive the push rod to move relative to the housing.
  • the sensor assembly is used to detect the operating parameters of the actuator.
  • the actuator further includes a sensor protector formed independently of the housing, the sensor assembly is accommodated in the sensor protector and installed on the driving mechanism together with the sensor protector.
  • a protector formed independently of the housing can protect the sensor assembly, and in particular can be mounted on the drive mechanism together with the sensor assembly before forming the housing.
  • the sensor protector can protect the sensor assembly during the formation of the housing, thereby reducing the risk of damage to the sensor assembly during manufacture.
  • the sensor protector may comprise a plurality of housing parts which can be assembled together to house the sensor assembly.
  • the separate housing parts facilitate mounting the sensor assembly inside the sensor protector and can effectively house and protect the sensor assembly when assembled together.
  • the plurality of housing parts may have a connecting structure for connecting the plurality of housing parts together.
  • the connection structure may be, for example, a plug-jack connection structure.
  • the connection structure can also be a hook-slot, an adhesive surface or other connection structures.
  • the actuator may include connecting wires for transmitting signals or power to the sensor assembly
  • the sensor protector may include lead wires connected to the sensor assembly, and the lead wires extend to the outside of the sensor protector to communicate with the sensor assembly. Connection wire connection. Lead wires extending outside the sensor protector ensure the necessary connection of the sensor assembly to the connecting wires without exposing the sensor assembly.
  • the sensor protector may include a plurality of leads and a plurality of housing parts that can be assembled together to accommodate the sensor assembly, and all the leads of the sensor protector may be disposed in the same one of the plurality of housing parts superior. This facilitates stable connection of the sensor assembly and lead wires.
  • the actuator may include a positioning structure for positioning the sensor protector on the driving mechanism.
  • the sensor protector together with the sensor assembly can be positioned on the drive mechanism through the positioning structure. Therefore, it can be ensured that the sensor assembly and the sensor protector maintain a predetermined positional relationship with respect to the driving mechanism during the process of forming the housing.
  • the sensor protector or the sensor protector together with the drive mechanism can completely enclose the sensor assembly. Therefore, the sensor assembly is not directly exposed to the external environment during forming the housing, thereby effectively reducing the risk of damage to the sensor assembly.
  • the operating parameter detected by the sensor assembly may be the moving position of the push rod relative to the housing.
  • a sensor assembly for detecting such operating parameters can be, for example, an assembly comprising Hall sensors and magnets.
  • This manufacturing method is used to manufacture an actuator having the above-mentioned features.
  • the manufacturing method includes: installing the sensor assembly in the sensor protector; positioning the sensor assembly and the sensor protector on the drive mechanism; and forming a housing for accommodating the drive mechanism by overmolding. During forming the housing, the sensor assembly is protected by the sensor protector, thereby reducing the risk of damage to the sensor assembly.
  • Figure 1 shows a schematic cross-sectional view of an actuator according to the prior art
  • Figures 2a and 2b show schematic perspective views of different stages in the manufacturing process of actuators according to the prior art
  • Figures 3a and 3b show schematic perspective views of different stages in the manufacturing process of an actuator according to an exemplary embodiment of the present invention.
  • FIGS. 4a to 4c show schematic diagrams of assembly of a sensor protector and a sensor assembly of an actuator according to an exemplary embodiment of the present invention.
  • an actuator which can be installed in various devices to provide driving force.
  • an actuator may be used in a variable valve lift system of a motor vehicle.
  • the principle of the present invention is described by taking an electromagnetic actuator for a variable valve lift system as an example, but it should be understood that the present invention is also applicable to other systems and/or other types of actuators Actuator.
  • the actuator includes components such as a housing 1 , a push rod 2 , a driving mechanism 3 , and a sensor assembly.
  • Fig. 3a and Fig. 3b respectively show three-dimensional schematic diagrams of different stages in the manufacturing process of the actuator according to the present invention.
  • this actuator In the finished state in FIG. 3b, this actuator has substantially the same outer shape as the prior art actuator (FIG. 2b).
  • this actuator also includes a sensor protector 6 formed separately from the housing 1 .
  • the sensor protector 6 is mounted on the driving mechanism 3 together with the sensor assembly.
  • the driving mechanism 3 is schematically shown as a solenoid device, but the driving mechanism 3 can also be other types of driving devices, as long as it can provide the driving force to push the push rod 2 to move relative to the housing 1 That's it.
  • FIGS. 4a and 4 b show schematic diagrams of assembly of the sensor protector 6 and the sensor assembly.
  • a sensor assembly is schematically shown as a device for detecting the movement position of the push rod 2 , which for example includes a sensor 5 and a magnet 4 cooperating with the sensor 5 .
  • the sensor 5 can be, for example, a Hall sensor capable of detecting changes in the magnetic field generated by the magnet 4 . It should be understood that the specific structure of the above sensor assembly is only an example, and the sensor assembly may have a different structure according to actual needs, for example, may include other types of sensors, or may include more or less components.
  • the sensor protector 6 is formed with a cavity for accommodating a sensor component, and the sensor component can be installed in the cavity of the sensor protector 6 .
  • the sensor assembly installed in the cavity is partially or completely covered or enclosed by the sensor protector 6 . If the sensor protector 6 does not completely cover or close the sensor assembly, after the sensor assembly and the sensor protector 6 are installed on the driving mechanism 3, preferably the driving mechanism 3 can also be used to wrap or close the unprotected sensor of the sensor assembly. At least a part of the area enclosed by the protector 6 .
  • the magnet 4 for installation in the sensor protector 6 has an exposed surface so as to contact the driving mechanism 3 . As shown in FIG.
  • the exposed surface faces the driving mechanism 3 , so that the driving mechanism 3 together with the sensor protector 6 completely closes the sensor assembly.
  • the sensor assembly and the sensor protector 6 are installed on the driving mechanism 3, there may still be exposed areas of the sensor assembly that are not completely covered or closed, as long as the sensor protector 6 It is sufficient that the sensor unit can be partially covered or sealed.
  • the sensor protector 6 may include multiple housing sections that can be assembled together to house the sensor assembly.
  • the sensor protector 6 includes two housing parts, namely a first housing part 61 and a second housing part 62 . Between assembly of the housing parts, the housing parts can be separated from each other so that the cavity for receiving the sensor assembly can be opened. As shown in Figure 4b, it is now convenient to install the sensor assembly into the cavity.
  • the volume of the cavity can be provided by a recess 66 on the second housing part 62, the recess 66 has a shape complementary to the sensor assembly, so as to be suitable for stably accommodating the sensor assembly; the opening of the recess 66 can be provided by the first housing part 61 to close, thereby forming the cavity.
  • the housing parts may have connecting structures for connecting the housing parts together.
  • This connection structure may be any one or a combination of connection structures such as a plug-socket form, a hook-slot form, an adhesive surface form, and the like.
  • the first housing part 61 has a plurality of protruding plugs 63
  • the second housing part 62 has a plurality of female sockets 63 .
  • the shapes and numbers of the plugs 63 and sockets 64 correspond to each other, so that when the two shell parts are assembled, each plug 63 can be inserted into the corresponding socket 64, thereby stably connecting the two shell parts together.
  • other forms or numbers of connection structures can also be used.
  • the actuator may comprise one or more connecting wires 7 for transmitting signals or power to the sensor assembly.
  • the connecting wire 7 is fixed on the drive mechanism 3 .
  • Three connection lines 7 are schematically shown in the figure, but different numbers of connection lines, such as one, two, four or more, can be provided as required.
  • the sensor assembly has one or more sensor terminals 51 for connecting with the connecting wire 7 to receive power or transmit signals. The number of sensor terminals 51 may correspond to the number of connecting wires 7 .
  • the sensor protector 6 may also preferably comprise one or more lead wires 65 .
  • the number of lead wires 65 also corresponds to the number of connecting wires 7 .
  • One end of each lead wire 65 is connected to the cavity of the sensor protector 6 to connect the sensor components, especially the sensor terminal 51 , while the other end extends to the outside of the sensor protector 6 to connect to the corresponding connection wire 7 .
  • the ends of the lead wires 65 may be fixed with the corresponding connection wires 7 by means of welding or bonding.
  • all the lead wires 65 of the sensor protector 6 can be arranged on the same housing part among these housing parts.
  • this housing part provided with all the lead wires 65 can be the above-mentioned housing part formed with the recess 66 for providing the cavity volume. Thereby, stable connection of the lead wires can be ensured.
  • the sensor protector 6 is independent of the housing 1 , so that the sensor protector 6 can be installed on the driving mechanism 3 together with the sensor assembly before the housing 1 is set on the driving mechanism 3 .
  • the actuator may include a positioning structure for positioning the sensor protector 6 and the sensor assembly on the drive mechanism 3 .
  • the sensor protector 6 and the sensor assembly can be positioned together on the driving mechanism 3 through a positioning structure.
  • the positioning structure can ensure that the sensor protector 6 and/or the sensor assembly is in the correct predetermined position relative to the drive mechanism 3, and can further prevent the sensor protector 6 and/or the sensor assembly from being separated from the drive mechanism 3 (especially when the housing is set 1 before).
  • the positioning structure can be a structure formed on the sensor protector 6 and/or the driving mechanism 3, such as mutually corresponding protrusions and recesses formed on the sensor protector 6 and the driving mechanism 3 respectively, or formed on the sensor protector 6 and the driving mechanism 3. /or the bonding surface on the driving mechanism 3, or other types of positioning structures.
  • the actuator may include two push rods 2 and corresponding two driving mechanisms 3 .
  • the sensor protector 6 is mounted between the two push rods 2 in the connection region of the two drive mechanisms 3 . But this is only designed according to the specific application and structural characteristics of the actuator. It should be understood that in different actuators, the number and structure of the casing 1, push rod 2 and driving mechanism 3 may be different, and the sensor protector 6 may be arranged at different positions in the actuator as required.
  • the housing 1 can cover the outside of the driving mechanism 3 (and possible connecting wires 7 and other components).
  • the housing 1 and the sensor protector 6 according to this embodiment can jointly form an appearance similar to the housing 1 ′ in the prior art. This enables the entire actuator according to the embodiment of the present invention to have substantially the same appearance and function as the actuators in the prior art.
  • the sensor protector 6 can protect the sensor assembly during the setting, especially the process of forming the casing 1, thereby reducing the Risk of damage to sensor components.
  • the present invention also provides a manufacturing method for this actuator.
  • the advantages of the invention can be better understood in the description of the corresponding production method.
  • An exemplary embodiment of the manufacturing method according to the present invention is described below with reference to FIGS. 3 a to 4 c.
  • the sensor assembly is first installed in the sensor protector 6 .
  • the sensor assembly installed in the sensor protector 6 is thus at least partially covered or enclosed by the sensor protector 6 .
  • the assembled sensor assembly and sensor protector 6 are positioned on the driving mechanism 3 .
  • the sensor assembly and the sensor protector 6 are positioned at a predetermined position relative to the drive mechanism 3 , which is the position of the sensor assembly and the sensor protector 6 relative to the drive mechanism 3 in the manufactured actuator.
  • this positioning can be realized by the above-mentioned positioning structure.
  • the housing 1 housing the drive mechanism 3 is formed by overmolding.
  • the driving mechanism 3 may be placed in a mold together with components such as the sensor assembly and the sensor protector 6 , and then the liquid shell material may be injected.
  • the liquid shell material cools in the mold, thereby forming a solid shell 1 of predetermined shape.
  • the risk of damage to the sensor assembly due to factors such as high temperature and high pressure can be reduced. This reduces the scrap rate in the manufacture of actuators, thereby reducing production costs and the risk of putting defective products into service.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
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Abstract

本发明涉及一种执行器和用于执行器的制造方法。该执行器包括壳体、推杆、驱动机构和传感器组件，驱动机构安装在壳体中并且能够驱动推杆相对于壳体移动，传感器组件用于检测该执行器的运行参数。其中，该执行器还包括独立于壳体形成的传感器保护器，传感器组件容纳在传感器保护器中并且与传感器保护器一起安装在驱动机构上。本发明的执行器和制造方法能够降低传感器组件的损坏风险。

Description

执行器和用于执行器的制造方法 技术领域
本发明涉及执行器技术领域。具体地，本发明涉及一种执行器和用于执行器的制造方法。
背景技术
执行器是用于提供驱动力来控制机械运动的装置。执行器可以包括壳体、推杆和驱动机构等部件。驱动机构例如为螺线管装置等电磁驱动器，可以是其他类型的驱动器。驱动机构容纳在壳体中，并且能够产生驱动力来推动推杆相对于壳体移动。移动的推杆可以向其他机械装置提供驱动力。为了监控执行器的运行状态，经常需要在执行器中设置各种传感器元件。
例如，图1示出了一种用于可变气门升程(CSS)系统的电磁执行器，其具有两个能够分别相对于壳体1'移动的推杆2。为了检测两个推杆2的运行参数、特别是移动位置，在两个推杆2之间设置有传感器组件。传感器组件例如可以包括用于产生静磁场的磁体4以及用于感测静磁场变化的霍尔传感器5。当然也可以使用其他类型的传感器组件。
在现有的制造方法中，通常首先将传感器组件安装在例如螺线管装置等驱动机构3上(如图2a所示)，然后再通过包覆成型工艺在驱动机构3及传感器组件的外部形成壳体1'(图2b所示)。壳体1'将传感器组件一起包覆在内(图2b中圆圈处)。在包覆成型的过程中，传感器组件需要暴露在高温(例如高达300℃)、高压(例如高达1250巴的浇铸压力)等极端环境条件下，这使得传感器组件可能在执行器的制造过程中发生损坏。例如，霍尔传感器可能损坏，磁体可能发生退磁。损坏的传感器组件无法正常工作，从而导致了较高的废品率。而且，此类损坏中的一部分在壳体1'成型后无法进行可靠的检测，存在损坏的执行器一旦投入使用就可能发生故障。
发明内容
因此，本发明需要解决的技术问题是，提供一种能够降低传感器组件的损坏风险的执行器和制造方法。
上述技术问题通过根据本发明的一种执行器而得到解决。该执行器包括壳体、推杆、驱动机构和传感器组件，驱动机构安装在壳体中并且能够驱动推杆相对于壳体移动，传感器组件用于检测执行器的运行参数。其中，该执行器还包括独立于壳体形成的传感器保护器，传感器组件容纳在传感器保护器中并且与传感器保护器一起安装在驱动机构上。独立于壳体形成的保护器可以保护传感器组件，特别是可以在形成壳体之前与传感器组件一起安装在驱动机构上。因此，在形成壳体的过程中，传感器保护器可以保护传感器组件，从而降低传感器组件在制造期间发生损坏的风险。
根据本发明的一个优选实施例，传感器保护器可以包括能够组装在一起来容纳传感器组件的多个外壳部分。分离的多个外壳部分便于将传感器组件安装到传感器保护器的内部，并且可以在组装在一起之后有效地容纳和保护传感器组件。
根据本发明的另一优选实施例，该多个外壳部分可以具有用于将该多个外壳部分连接在一起的连接结构。优选地，连接结构例如可以为插头-插孔形式的连接结构。连接结构也可以为卡钩-卡槽、黏结表面或其他形式的连接结构。
根据本发明的另一优选实施例，该执行器可以包括用于为传感器组件传输信号或电力的连接线，传感器保护器可以包括与传感器组件连接的引线，引线延伸到传感器保护器的外部以与连接线连接。延伸到传感器保护器外部的引线在避免暴露传感器组件的情况下确保了传感器组件与连接线的必要连接。
根据本发明的另一优选实施例，传感器保护器可以包括多个引线以及能够组装在一起来容纳传感器组件的多个外壳部分，传感器保护器的全部引线可以设置在多个外壳部分中的同一者上。这便于实现传感器组件与引线的稳定连接。
根据本发明的另一优选实施例，该执行器可以包括用于将传感器保护器定位在驱动机构上的定位结构。传感器保护器连同传感器组件可以通过定位结构定位在驱动机构上。由此可以确保传感器组件和传感器保护器在形成壳体的过程中相对于驱动机构保持预定的位置关系。
根据本发明的另一优选实施例，当传感器组件与传感器保护器一起安装在驱动机构上时，传感器保护器或者传感器保护器与驱动机构一起可以完全封闭传感器组件。因此，传感器组件在形成壳体期间不会直接暴露在外界环境中，从而有效降低了损坏传感器组件的风险。
根据本发明的另一优选实施例，由传感器组件检测的运行参数可以为推杆相对于壳体的移动位置。用于检测这种运行参数的传感器组件例如可以为包括霍尔传感器和磁体的组件。
上述技术问题还通过根据本发明的一种制造方法而得到解决。该制造方法用于制造具有上述特征的执行器。其中，该制造方法包括：将传感器组件安装在传感器保护器中；将传感器组件和传感器保护器定位在驱动机构上；和通过包覆成型形成容纳驱动机构的壳体。在形成壳体的过程中，传感器组件受到传感器保护器的保护，因此能够降低损坏传感器组件的风险。
附图说明
以下结合附图进一步描述本发明。图中以相同的附图标记来代表功能相同的元件。其中：
图1示出根据现有技术的执行器的剖视示意图；
图2a和图2b示出根据现有技术的执行器在制造过程中的不同阶段的立体示意图；
图3a和图3b示出根据本发明的示例性实施例的执行器在制造过程中的不同阶段的立体示意图；和
图4a至图4c示出根据本发明的示例性实施例的执行器的传感器保护器与传感器组件的组装示意图。
具体实施方式
以下将结合附图描述根据本发明的执行器和制造方法的具体实施方式。下面的详细描述和附图用于示例性地说明本发明的原理，本发明不限于所描述的优选实施例，本发明的保护范围由权利要求书限定。
根据本发明的实施例，提供了一种执行器，其可以安装在各种装置中以提供驱动力。例如，这种执行器可以用于机动车辆的可变气门升程系统。在以下的示例性实施例中，以用于可变气门升程系统的电磁执行器为例来说明本发明的原理，但是应当理解，本发明同样适用于其他系统中的和/或其他类型的执行器。
在根据本发明的示例性实施例中，执行器包括壳体1、推杆2、驱动机构3和传感器组件等部件。图3a和图3b分别示出了根据本发明的执行器在制造过程中的不同阶段的立体示意图。在图3b中的制造完成的状态下，这种执行器具有基本与现有技术中的执行器(图2b)基本相同的外形。但是，不同于现有技术的是，该执行器还包括独立于壳体1形成的传感器保护器6。如图3a所示的未设置壳体1的执行器中，传感器保护器6与传感器组件一起安装在驱动机构3上。在本实施例中，驱动机构3示意性地示出为螺线管装置，但是驱动机构3也可以是其他类型的驱动装置，只要其能够提供推动推杆2相对于壳体1移动的驱动力即可。
图4a至图4c示出了传感器保护器6与传感器组件的组装示意图。在图4a和图4b中，传感器组件示意性地示出为用于检测推杆2的移动位置的装置，其例如包括传感器5以及与传感器5配合的磁体4。传感器5例如可以为能够检测磁体4产生的磁场的变化的霍尔传感器。应当理解，上述传感器组件的具体构造仅是示例，根据实际需要，传感器组件可以具有不同的构造，例如可以包括其他类型的传感器，或者可以包括更多或更少的组成部件。
如图4a和图4b所示，传感器保护器6形成有用于容纳传感器组件的空腔，传感器组件可以安装在传感器保护器6的空腔中。如图4c所示，安装在空腔中的传感器组件由传感器保护器6部分地或者完全地包覆或封闭。如果传感器保护器6没有完全包覆或封闭传感器组件，当将传感器组件与 传感器保护器6一起安装在驱动机构3上之后，优选地也可以使用驱动机构3来包裹或封闭传感器组件的未被传感器保护器6封闭的区域的至少一部分。例如，在本实施例中，为了安装在传感器保护器6中的磁体4具有暴露的表面，以便接触驱动机构3。如图3a所示，当将传感器组件与传感器保护器6一起安装在驱动机构3上之后，该暴露表面朝向驱动机构3，由此驱动机构3与传感器保护器6一起将传感器组件完全封闭。但是应当理解，在其他实施例中，当将传感器组件与传感器保护器6一起安装在驱动机构3上之后，传感器组件也可能仍然存在未被完全包覆或封闭的暴露区域，只要传感器保护器6能够部分地包覆或封闭传感器组件即可。
如图4a和图4b所示，传感器保护器6可以包括能够组装在一起来容纳传感器组件的多个外壳部分。在本实施例中，传感器保护器6包括两个外壳部分，即第一外壳部分61和第二外壳部分62。在组装这些外壳部分之间，这些外壳部分可以相互分离，从而可以打开用于容纳传感器组件的空腔。如图4b所示，此时可以方便地将传感器组件安装到空腔中。具体地，空腔的体积可以由第二外壳部分62上的凹部66来提供，凹部66具有与传感器组件互补的形状，从而适于稳定地容纳传感器组件；凹部66的开口可以由第一外壳部分61来封闭，从而形成所述空腔。
应当理解，本领域技术人员也可以根据实际需要来调整外壳部分的具体数量，例如使用更多的外壳部分或使用仅一个外壳部分(即传感器保护器的整个外壳一体形成)。
当存在多个外壳部分时，这些外壳部分可以具有用于将这些外壳部分连接在一起的连接结构。这种连接结构可以为插头-插孔形式、卡钩-卡槽形式、粘结表面形式等连接结构中的任意一种或其组合。例如，在本实施例中，第一外壳部分61具有多个凸起的插头63，而第二外壳部分62具有多个凹入的插孔63。插头63和插孔64的形状和数量相互对应，使得在组装两个外壳部分时，每个插头63能够插入相应的插孔64中，从而将两个外壳部分稳定地连接在一起。当然，如前所述，也可以采用其他形式或数量的连接结构。
在很多情况下，需要在执行器中设置一些线路来为传感器组件传输信 号或电力。因此，如图3a所示，根据本实施例的执行器可以包括为传感器组件传输信号或电力的一个或多个连接线7。连接线7固定在驱动机构3上。图中示意性地示出了三个连接线7，但是可以根据需要设置不同数量的连接线，例如一个、两个、四个或更多。传感器组件具有用于与连接线7连接来接收电力或者传输信号的一个或多个传感器端子51。传感器端子51的数量可以对应于连接线7的数量。为了将传感器组件、特别是传感器组件的传感器端子51连接到连接线7，传感器保护器6还可以优选地包括一个或多个引线65。引线65的数量也对应于连接线7的数量。每个引线65的一端连接到传感器保护器6的空腔中以连接传感器组件、特别是传感器端子51，而另一端延伸到传感器保护器6的外部以连接相应的连接线7。为了确保与连接线7稳定地连接，引线65的端部可以与相应的连接线7通过焊接或黏结等方式固定在一起。
优选地，当存在多个引线65以及多个外壳部分时，传感器保护器6的全部引线65可以都设置在这些外壳部分中的同一个外壳部分上。尤其优选地，这个设置有全部引线65的外壳部分可以为上述的形成有用于提供空腔体积的凹部66的外壳部分。由此可以确保引线的稳定连接。
如图3a所示，根据本发明的传感器保护器6独立于壳体1，从而可以在将壳体1设置到驱动机构3上之前将传感器保护器6与传感器组件一起安装在驱动机构3上。为了便于传感器保护器6和/或传感器组件相对于驱动机构3的定位，该执行器可以包括用于将传感器保护器6和传感器组件定位在驱动机构3上的定位结构。传感器保护器6和传感器组件可以通过定位结构一起定位在驱动机构3上。定位结构可以保证传感器保护器6和/或传感器组件相对于驱动机构3位于正确的预定位置，并且还可以进一步防止传感器保护器6和/或传感器组件与驱动机构3分离(特别是在设置壳体1之前)。定位结构可以是形成在传感器保护器6和/或驱动机构3上的结构，例如分别形成在传感器保护器6和驱动机构3上的相互对应的凸起和凹部，或者形成在传感器保护器6和/或驱动机构3上的黏结表面，或者也可以是其他类型的定位结构。
在本实施例中，执行器可以包括两个推杆2和相应的两个驱动机构3。 在这种情况下，传感器保护器6在两个推杆2之间安装到两个驱动机构3的连接区域中。但这仅是根据执行器的具体应用和结构特征设计的。应当理解，在不同的执行器中，壳体1、推杆2和驱动机构3的数量和结构可以不同，传感器保护器6可以根据需要设置在执行器中的不同位置处。
如图3b所示，壳体1可以包覆在驱动机构3(以及可能存在的连接线7等部件)的外部。当设置壳体1之后，根据本实施例的壳体1和传感器保护器6可以共同构成类似于现有技术中的壳体1'的外形。这使得根据本发明的实施例的整个执行器可以具有与现有技术中的执行器基本相同的外形和功能。但是，由于在设置壳体1之前首先将传感器组件与传感器保护器6共同安装在驱动机构3上，因此传感器保护器6可以在设置、特别是形成壳体1的过程中保护传感器组件，从而降低损坏传感器组件的风险。
对应于上述执行器，本发明还提供了一种用于这种执行器的制造方法。在对相应的制造方法的描述中，可以更好地理解本发明的优点。下面参照图3a至图4c来描述根据本发明的制造方法的示例性实施例。
在该制造方法中，如图4a至图4c所示，首先将传感器组件安装在传感器保护器6中。如图4c所示，安装在传感器保护器6中的传感器组件由此至少部分地由传感器保护器6包覆或封闭。
然后，如图3a所示，将组装在一起的传感器组件和传感器保护器6定位在驱动机构3上。此时，传感器组件和传感器保护器6相对于驱动机构3定位在预定位置，该预定位置为传感器组件和传感器保护器6在制造完成的执行器中相对于驱动机构3的位置。优选地，这种定位可以通过上述的定位结构来实现。
最后，如图3b所示，通过包覆成型形成容纳驱动机构3的壳体1。具体而言，在形成驱动机构3的包覆成型工艺中，可以将驱动机构3连通传感器组件和传感器保护器6等部件一起放置在模具中，然后注入液态壳体材料。液态壳体材料在模具中冷却，从而形成预定形状的固体壳体1。在该过程中，由于传感器组件受到传感器保护器6的保护，因此可以降低高温、高压等因素对传感器组件造成损坏的风险。由此可以降低制造执行器的废品率，从而降低生产成本以及将存缺陷产品投入使用的风险。
虽然在上述说明中示例性地描述了可能的实施例，但是应当理解到，仍然通过所有已知的和此外技术人员容易想到的技术特征和实施方式的组合存在大量实施例的变化。此外还应该理解到，示例性的实施方式仅仅作为一个例子，这种实施例绝不以任何形式限制本发明的保护范围、应用和构造。通过前述说明更多地是向技术人员提供一种用于转化至少一个示例性实施方式的技术指导，其中，只要不脱离权利要求书的保护范围，便可以进行各种改变，尤其是关于所述部件的功能和结构方面的改变。
附图标记表
1、1'  壳体
2      推杆
3      驱动机构
4      磁体
5      传感器
51     传感器端子
6      传感器保护器
61     第一外壳部分
62     第二外壳部分
63     插头
64     插孔
65     引线
66     凹部
7      连接线

Claims (10)

  1. 一种执行器，包括壳体(1)、推杆(2)、驱动机构(3)和传感器组件，所述驱动机构(3)安装在所述壳体(1)中并且能够驱动所述推杆(2)相对于所述壳体(1)移动，所述传感器组件用于检测所述执行器的运行参数，
    其特征在于，
    所述执行器还包括独立于所述壳体(1)形成的传感器保护器(6)，所述传感器组件容纳在所述传感器保护器(6)中并且与所述传感器保护器(6)一起安装在所述驱动机构(3)上。
  2. 根据权利要求1所述的执行器，其特征在于，所述传感器保护器(6)包括能够组装在一起来容纳所述传感器组件的多个外壳部分。
  3. 根据权利要求2所述的执行器，其特征在于，所述多个外壳部分具有用于将所述多个外壳部分连接在一起的连接结构。
  4. 根据权利要求3所述的执行器，其特征在于，所述连接结构为插头-插孔形式的连接结构。
  5. 根据权利要求1所述的执行器，其特征在于，所述执行器包括用于为所述传感器组件传输信号或电力的连接线(7)，所述传感器保护器(6)包括与所述传感器组件连接的引线(65)，所述引线(65)延伸到所述传感器保护器(6)的外部以与所述连接线(7)连接。
  6. 根据权利要求5所述的执行器，其特征在于，所述传感器保护器(6)包括多个所述引线(65)以及能够组装在一起来容纳所述传感器组件的多个外壳部分，所述传感器保护器(6)的全部所述引线(65)设置在所述多个外壳部分中的同一者上。
  7. 根据权利要求1所述的执行器，其特征在于，所述执行器包括用于将所述传感器保护器(6)定位在所述驱动机构(3)上的定位结构。
  8. 根据权利要求1所述的执行器，其特征在于，当所述传感器组件与所述传感器保护器(6)一起安装在所述驱动机构(3)上时，所述传感器保护器(6)或者所述传感器保护器(6)与所述驱动机构(3)一起完全 封闭所述传感器组件。
  9. 根据权利要求1至8中任一项所述执行器，其特征在于，由所述传感器组件检测的所述运行参数为所述推杆(2)相对于所述壳体(1)的移动位置。
  10. 一种用于根据权利要求1至9中任一项所述的执行器的制造方法，其特征在于，所述制造方法包括：
    将所述传感器组件安装在所述传感器保护器(6)中；
    将所述传感器组件和所述传感器保护器(6)定位在所述驱动机构(3)上；和
    通过包覆成型形成容纳所述驱动机构(3)的所述壳体(1)。
PCT/CN2022/078190 2022-02-28 2022-02-28 执行器和用于执行器的制造方法 WO2023159542A1 (zh)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000130128A (ja) * 1998-10-20 2000-05-09 Unisia Jecs Corp 電磁駆動式バルブ
CN106762006A (zh) * 2017-01-24 2017-05-31 绵阳富临精工机械股份有限公司 一种适用于发动机凸轮移位系统的电磁执行器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000130128A (ja) * 1998-10-20 2000-05-09 Unisia Jecs Corp 電磁駆動式バルブ
CN106762006A (zh) * 2017-01-24 2017-05-31 绵阳富临精工机械股份有限公司 一种适用于发动机凸轮移位系统的电磁执行器

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