CN206754548U - A kind of magnetic valve - Google Patents

A kind of magnetic valve Download PDF

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Publication number
CN206754548U
CN206754548U CN201720261822.4U CN201720261822U CN206754548U CN 206754548 U CN206754548 U CN 206754548U CN 201720261822 U CN201720261822 U CN 201720261822U CN 206754548 U CN206754548 U CN 206754548U
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solenoid valve
plunger
travel switch
steering
switch
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Chinese (zh)
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闫帅林
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Yutong Bus Co Ltd
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Zhengzhou Yutong Bus Co Ltd
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Abstract

The utility model provides a kind of magnetic valve, including valve body and plunger, in addition to is used on magnet plunger motion path by the travel switch of magnet plunger triggering.The utility model adds travel switch, can determine whether magnetic valve fails by the voltage change for detecting travel switch circuit.Magnetic valve design is simple, and functional reliability is good, it is ensured that can be detected in time in the case of electromagnetism defective valve, consequently facilitating the system residing for magnetic valve makes remedial measure in time.

Description

一种电磁阀a solenoid valve

技术领域technical field

本实用新型属于电磁阀技术领域,具体涉及一种电磁阀。The utility model belongs to the technical field of electromagnetic valves, in particular to an electromagnetic valve.

背景技术Background technique

电磁阀在液、气等流体的供给、传输、控制和动力系统中广泛应用,电磁阀通常依靠电磁吸力、气体压力及弹簧弹力等实现对阀门导通和截止控制的目的,是整个系统的关键零部件。Solenoid valves are widely used in the supply, transmission, control and power systems of fluids such as liquids and gases. Solenoid valves usually rely on electromagnetic suction, gas pressure and spring force to achieve the purpose of controlling the valve on and off, which is the key to the entire system. parts.

液压助力转向系统利用发动机驱动转向油泵提供动力来源,将发动机旋转的机械能转化为转向油液的液压能,通过动力转向器提供转向助力,降低汽车驾驶员施加在转向盘上的转向力。The hydraulic power steering system uses the engine to drive the steering oil pump to provide the power source, converts the mechanical energy of the engine rotation into the hydraulic energy of the steering oil, provides steering assistance through the power steering gear, and reduces the steering force exerted by the driver on the steering wheel.

电控液压助力转向系统根据控制方式的不同,可分为反力控制式、流量控制式和阀增益控制式三种类型。According to different control methods, the electro-hydraulic power steering system can be divided into three types: reaction force control, flow control and valve gain control.

汽车的电动液压助力转向系统,是将传统的由发动机驱动的转向油泵改为由转向电机驱动转向油泵,采用独立于发动机的动力电池组或蓄电池为转向电机供电,同时采用控制器根据车辆的运行状态(发动机是否开启、转向速度大小、车速大小)控制转向电机的转速,提高节能效果,同时实现转向力随车速和转向速度而变化的特性。The electro-hydraulic power steering system of the car is to change the traditional steering oil pump driven by the engine into the steering oil pump driven by the steering motor. The power battery pack or storage battery independent of the engine is used to supply power to the steering motor. The state (whether the engine is on, the steering speed, and the vehicle speed) controls the rotation speed of the steering motor to improve the energy-saving effect, and at the same time realize the characteristic that the steering force changes with the vehicle speed and steering speed.

汽车的反力控制式的电控液压助力转向系统,车速传感器将当前车速运行情况传递给转向控制单元ECU,转向控制单元ECU使设置在液压管路中的电磁阀线圈的平均电流增大或减小,电磁阀的平均开度增大或减小,从而改变分流液压流的回流量,作用于反力柱塞的背压改变,继而使得低速时轻便转向或者高速时形成较强的转向“路感”。The reaction force controlled electronically controlled hydraulic power steering system of the car, the vehicle speed sensor transmits the current vehicle speed operation to the steering control unit ECU, and the steering control unit ECU increases or decreases the average current of the solenoid valve coil set in the hydraulic pipeline. Small, the average opening of the solenoid valve increases or decreases, thereby changing the return flow of the shunt hydraulic flow, and the back pressure acting on the reaction plunger changes, which in turn makes the steering easy at low speeds or forms a strong steering "road" at high speeds. feel".

但是,如果电磁阀失效,电磁阀上无控制信号,将会保持最大的转向“路感”,使原地或低速转向时方向较为沉重;在同一车速下,随着转向速度的增加,由于转向控制单元控制通过电磁阀线圈的平均电流不变,电磁阀的平均开度也不变,转向力不会随转向速度的增加而减低,增加了快速转向时的疲劳程度,转向舒适度降低。However, if the solenoid valve fails and there is no control signal on the solenoid valve, the maximum steering "road feel" will be maintained, making the direction heavier when turning in situ or at low speed; The control unit controls the average current passing through the solenoid valve coil to be constant, and the average opening of the solenoid valve is also constant, and the steering force will not decrease with the increase of the steering speed, which increases the fatigue degree during fast steering and reduces the steering comfort.

实用新型内容Utility model content

本实用新型的目的在于提供一种电磁阀,用以解决无法判断电磁阀信号是否失效的问题。The purpose of the utility model is to provide a solenoid valve to solve the problem that it is impossible to judge whether the signal of the solenoid valve is invalid.

为解决上述技术问题,本实用新型的技术方案为:For solving the problems of the technologies described above, the technical solution of the utility model is:

本实用新型提供了一种电磁阀,包括阀体和柱塞,还包括安装在电磁阀柱塞运动路径上用于被电磁阀柱塞触发的行程开关。The utility model provides an electromagnetic valve, which includes a valve body and a plunger, and also includes a travel switch installed on the movement path of the electromagnetic valve plunger and used for being triggered by the electromagnetic valve plunger.

进一步的,所述电磁阀为通过弹簧将电磁阀柱塞保持于常开位置的常开式电磁阀,所述行程开关包括开关触头,开关触头与常开位置的电磁阀柱塞接触。Further, the solenoid valve is a normally open solenoid valve in which the plunger of the solenoid valve is kept in the normally open position by a spring, and the travel switch includes a switch contact, and the switch contact is in contact with the plunger of the solenoid valve in the normally open position.

进一步的,开关触头具有在电磁阀柱塞处于常开位置时导通行程开关所在回路的合闸位和用于在电磁阀柱塞动作时断开行程开关所在回路的分闸位。Further, the switch contact has a closing position for conducting the circuit where the travel switch is located when the solenoid valve plunger is in the normally open position, and an opening position for disconnecting the circuit where the travel switch is located when the solenoid valve plunger is in action.

进一步的,弹簧内设置有支撑套管,行程开关所在回路包括设置于所述支撑套管上的导线,支撑套管上端设置有内翻沿,开关触头设置于内翻沿的下侧,导线具有位于所述内翻沿上的用于与所述开关触头接触的触点,电磁阀柱塞具有穿过内翻沿并实现与所述开关触头接触相连的凸起。Further, a support sleeve is arranged inside the spring, and the circuit where the travel switch is located includes a wire arranged on the support sleeve. The upper end of the support sleeve is provided with an inversion edge, and the switch contact is arranged on the lower side of the inversion edge. There is a contact point on the inner turning edge for contacting with the switch contact, and the solenoid valve plunger has a protrusion passing through the inner turning edge and realizing contact connection with the switch contact.

进一步的,所述柱塞包括与阀体导向配合的柱塞主体,所述柱塞主体通过过渡肩与凸起相连,弹簧用于顶起过渡肩。Further, the plunger includes a plunger body that guides and cooperates with the valve body, the plunger body is connected to the protrusion through a transition shoulder, and the spring is used to push up the transition shoulder.

本实用新型的有益效果:The beneficial effects of the utility model:

本实用新型的电磁阀,增加了行程开关,通过检测行程开关电路的电压变化即可判断电磁阀是否失效。该电磁阀设计简单,工作可靠性好,确保了在电磁阀失效的情况下能够及时检测到,从而便于电磁阀所处的系统及时做出补救措施。The solenoid valve of the utility model adds a stroke switch, and it can be judged whether the solenoid valve is invalid by detecting the voltage change of the stroke switch circuit. The solenoid valve has a simple design and good working reliability, which ensures timely detection in the event of failure of the solenoid valve, so that the system in which the solenoid valve is located can take remedial measures in time.

附图说明Description of drawings

图1是反力控制式电动和电控二合一液压助力转向系统的组成结构图;Figure 1 is a structural diagram of the reaction force controlled electric and electronically controlled two-in-one hydraulic power steering system;

图2是未增加行程开关的电磁阀示意图;Fig. 2 is a schematic diagram of a solenoid valve without a travel switch;

图3是增加行程开关的电磁阀处于常开状态时示意图;Fig. 3 is a schematic diagram when the solenoid valve with the travel switch added is in the normally open state;

图4是增加行程开关的电磁阀的空心柱塞向下运动时示意图。Fig. 4 is a schematic diagram when the hollow plunger of the solenoid valve with a travel switch moves downward.

具体实施方式detailed description

为使本实用新型的目的、技术方案及优点更加清楚,下面结合附图及实施例,对本实用新型作进一步的详细说明。In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments.

以下以将本实用新型的电磁阀应用于反力控制式电控和电动二合一液压助力转向系统中为例来进行说明。The application of the solenoid valve of the present invention to a reaction force controlled electric control and electric two-in-one hydraulic power steering system will be described as an example below.

如图1所示,反力控制式电控和电动二合一液压助力转向系统主要由转向盘1、转向管柱2、整体式动力转向器3(包含转向控制阀4、机械转向器5、动力油缸6、油压反力室7、反力柱塞8)、转向油罐9、电动转向油泵10、转向油管11、分流阀12及固定节流小孔13、电磁阀14、转向控制单元ECU 15、车速传感器16等组成,主要结构特点是在转向控制转阀阀芯的前端加装了两对反力柱塞。在转向管柱2上设置有转向角速度传感器17,转向时转向角速度传感器将转向角速度转化为对应的电信号并发送给转向控制单元ECU。电磁阀14采用本实用新型的增设行程开关的电磁阀,转向控制单元ECU 15通过检测行程开关电路的电压变化,判断电磁阀是否失效。As shown in Figure 1, the reaction force controlled electronic control and electric two-in-one hydraulic power steering system mainly consists of a steering wheel 1, a steering column 2, and an integrated power steering gear 3 (including steering control valve 4, mechanical steering gear 5, Power cylinder 6, oil pressure reaction chamber 7, reaction plunger 8), steering oil tank 9, electric steering oil pump 10, steering oil pipe 11, diverter valve 12 and fixed orifice 13, solenoid valve 14, steering control unit It consists of ECU 15, vehicle speed sensor 16, etc., and its main structural feature is that two pairs of counter force plungers are installed on the front end of the steering control rotary valve spool. A steering angular velocity sensor 17 is arranged on the steering column 2, and the steering angular velocity sensor converts the steering angular velocity into a corresponding electrical signal and sends it to the steering control unit ECU during steering. The solenoid valve 14 adopts the solenoid valve with a travel switch of the present invention, and the steering control unit ECU 15 judges whether the solenoid valve fails by detecting the voltage change of the travel switch circuit.

该系统在正常工作时,转向电机工作在效率较高的转向范围,实现电控液压助力转向的功能,即工作在电控工作模式下;利用带行程开关的电磁阀,转向控制单元ECU可以判断电磁阀是否失效;在电磁阀失效无法实现电控液压助力转向功能时,转向控制单元ECU根据车速、转向角速度的大小控制转向电机变频工作,实现电动液压助力转向功能,即工作在电动工作模式下。这样该电动和电控二合一液压助力转向系统在不同工作状态下均能实现“低速转向轻便,高速增强路感(即助力降低)避免发飘”,同时节能、高效。When the system is working normally, the steering motor works in the high-efficiency steering range to realize the function of electronically controlled hydraulic power steering, that is, it works in the electronically controlled working mode; using the solenoid valve with travel switch, the steering control unit ECU can judge Whether the solenoid valve fails; when the solenoid valve fails to realize the electronically controlled hydraulic power steering function, the steering control unit ECU controls the steering motor to work with frequency conversion according to the vehicle speed and steering angular velocity to realize the electrohydraulic power steering function, that is, it works in the electric working mode . In this way, the electric and electronically controlled two-in-one hydraulic power steering system can realize "light steering at low speeds, enhanced road feeling (that is, reduced power assistance) and avoid drifting at high speeds" under different working conditions, while saving energy and high efficiency.

整体来说,电控工作模式向电动工作模式的转变便是判断设置在液压管路中的电磁阀是否能够正常工作。若电磁阀能够根据转向控制单元ECU的信号来正常工作,系统工作在电控工作模式下;当发现电磁阀失效时,系统转为电动工作模式。本实用新型的重点便是通过在电磁阀中增设行程开关来进行判断。On the whole, the transition from the electronically controlled working mode to the electric working mode is to judge whether the solenoid valve installed in the hydraulic pipeline can work normally. If the solenoid valve can work normally according to the signal of the steering control unit ECU, the system works in the electric control mode; when the solenoid valve is found to be ineffective, the system switches to the electric work mode. The key point of the utility model is to judge by adding a travel switch in the electromagnetic valve.

图2为未增加行程开关的电磁阀,电磁阀包括阀体18、设置在阀体18内的空心柱塞19,和设置在阀体18外的电磁线圈20,空心柱塞19包括与阀体18导向配合的柱塞主体21和凸起22。柱塞主体21通过过渡肩23与凸起22相连,弹簧24用于顶起过渡肩23。该电磁阀通过弹簧24将空心柱塞19保持于常开状态,为常开式电磁阀。空心柱塞19上设置有与阀体18配合的小阀口25和大阀口26。通过空心柱塞19上下往复运动,使得电磁阀的开度发生变化,即从小阀口经过大阀口的流量发生变化,从而控制液压助力转向。Fig. 2 is a solenoid valve without a travel switch, the solenoid valve includes a valve body 18, a hollow plunger 19 arranged in the valve body 18, and an electromagnetic coil 20 arranged outside the valve body 18, the hollow plunger 19 includes a 18 guides a mating plunger body 21 and projection 22 . The plunger body 21 is connected to the protrusion 22 through a transition shoulder 23 , and a spring 24 is used to push up the transition shoulder 23 . The solenoid valve maintains the hollow plunger 19 in a normally open state through the spring 24, and is a normally open solenoid valve. The hollow plunger 19 is provided with a small valve port 25 and a large valve port 26 matched with the valve body 18 . Through the reciprocating movement of the hollow plunger 19 up and down, the opening of the solenoid valve changes, that is, the flow rate from the small valve port to the large valve port changes, thereby controlling the hydraulic power steering.

图3为增加行程开关的电磁阀,在图2的基础上增加行程开关。行程开关包括开关触头27,正常情况下,开关触头27与常开位置的电磁阀的空心柱塞19的凸起22的触头接触。开关触头具有合闸位,用于在电磁阀的空心柱塞19处于常开位置时导通行程开关所在回路;也具有分闸位,用于在电磁阀的空心柱塞19动作时断开行程开关所在回路。在弹簧24内设置有支撑套管28,行程开关所在回路包括设置于支撑套管28内的导线29,支撑套管28用于支撑导线29。支撑套管28上端设置有内翻沿,行程开关的开关触头27设置于内翻沿的下侧,导线29具有位于内翻沿上的用于与开关触头27接触的触点,电磁阀的空心柱塞的凸起22穿过内翻沿并通过触头实现与开关触头27接触相连。行程开关所在回路还包括设置于电磁阀阀体18外的导线30和导线31,导线31与ECU输出电源正极相连,导线30接地,且该线路中设置有二极管32,二极管32的阳极与地相连。Figure 3 shows a solenoid valve with a travel switch added, and a travel switch is added on the basis of Figure 2. The travel switch includes a switch contact 27. Under normal circumstances, the switch contact 27 is in contact with the contact of the protrusion 22 of the hollow plunger 19 of the electromagnetic valve in the normally open position. The switch contact has a closing position, which is used to conduct the circuit where the travel switch is located when the hollow plunger 19 of the solenoid valve is in the normally open position; it also has an opening position, which is used to disconnect when the hollow plunger 19 of the solenoid valve is in action. The circuit where the limit switch is located. A support sleeve 28 is arranged inside the spring 24 , and the circuit where the travel switch is located includes a wire 29 arranged in the support sleeve 28 , and the support sleeve 28 is used to support the wire 29 . The upper end of the support sleeve 28 is provided with an inversion edge, the switch contact 27 of the travel switch is arranged on the lower side of the inversion edge, and the wire 29 has a contact point for contacting the switch contact 27 on the inversion edge, and the solenoid valve The protrusion 22 of the hollow plunger passes through the inversion edge and is connected with the switch contact 27 through the contact. The circuit where the travel switch is located also includes a wire 30 and a wire 31 arranged outside the solenoid valve body 18, the wire 31 is connected to the positive pole of the ECU output power supply, the wire 30 is grounded, and a diode 32 is arranged in the circuit, and the anode of the diode 32 is connected to the ground .

在如图3所示的状态时,行程开关所在回路处于导通状态,此时ECU采集电压信号,可检测到“高”电压。当给电磁阀动作信号,空心柱塞向下运动时,空心柱塞的凸起22会带动触头(与行程开关的开关触头27接触)向下,从而使行程开关所在回路断开,此时通过ECU采集电压信号时,电压信号为“低”,如图4所示。若给电磁阀动作信号,通过ECU采集电压信号时,仍旧能够采集到“高”电压信号,则说明电磁阀失效。In the state shown in Figure 3, the circuit where the limit switch is located is in the conduction state. At this time, the ECU collects the voltage signal and can detect "high" voltage. When the solenoid valve is given an action signal and the hollow plunger moves downward, the protrusion 22 of the hollow plunger will drive the contact (contacting with the switch contact 27 of the travel switch) downward, thereby disconnecting the circuit where the travel switch is located. When the voltage signal is collected by the ECU, the voltage signal is "low", as shown in Figure 4. If the action signal is given to the solenoid valve, when the voltage signal is collected through the ECU, the "high" voltage signal can still be collected, which means that the solenoid valve is invalid.

本实施例是将该电磁阀应用于电控和电动二合一液压助力转向系统中,但是应当指出,本实用新型的电磁阀还可以应用于其他领域,只要通过该电磁阀增设的行程开关来判断电磁阀是否失效,都在本实用新型的保护范围之内。In this embodiment, the solenoid valve is applied to the electronic control and electric two-in-one hydraulic power steering system, but it should be pointed out that the solenoid valve of the present utility model can also be applied to other fields, as long as the travel switch added to the solenoid valve is used to control the solenoid valve. Judging whether the solenoid valve fails is within the protection scope of the present utility model.

尽管本实用新型的内容已经通过上述优选实施例作了详细介绍,但应当认识到上述的描述不应被认为是对本实用新型的限制。在本领域技术人员阅读了上述内容后,对于本实用新型的多种修改和替代都将是显而易见的。因此,本实用新型的保护范围应由所附的权利要求来限定。Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions of the present utility model will be obvious to those skilled in the art after reading the above content. Therefore, the protection scope of the present utility model should be defined by the appended claims.

Claims (5)

1.一种电磁阀,包括阀体和电磁阀柱塞,其特征在于,还包括安装在电磁阀柱塞运动路径上用于被电磁阀柱塞触发的行程开关。1. A solenoid valve, comprising a valve body and a solenoid valve plunger, characterized in that it also includes a travel switch installed on the movement path of the solenoid valve plunger for being triggered by the solenoid valve plunger. 2.根据权利要求1所述的电磁阀,其特征在于,所述电磁阀为通过弹簧将电磁阀柱塞保持于常开位置的常开式电磁阀,所述行程开关包括开关触头,开关触头与常开位置的电磁阀柱塞接触。2. The solenoid valve according to claim 1, characterized in that, the solenoid valve is a normally open solenoid valve in which the solenoid valve plunger is kept in a normally open position by a spring, and the travel switch includes a switch contact, a switch The contacts make contact with the solenoid valve plunger in the normally open position. 3.根据权利要求2所述的电磁阀,其特征在于,开关触头具有在电磁阀柱塞处于常开位置时导通行程开关所在回路的合闸位和用于在电磁阀柱塞动作时断开行程开关所在回路的分闸位。3. The solenoid valve according to claim 2, characterized in that the switch contact has a closing position for conducting the circuit where the travel switch is located when the solenoid valve plunger is in the normally open position and is used for switching when the solenoid valve plunger is in action. Disconnect the opening position of the circuit where the travel switch is located. 4.根据权利要求3所述的电磁阀,其特征在于,弹簧内设置有支撑套管,行程开关所在回路包括设置于所述支撑套管上的导线,支撑套管上端设置有内翻沿,开关触头设置于内翻沿的下侧,导线具有位于所述内翻沿上的用于与所述开关触头接触的触点,电磁阀柱塞具有穿过内翻沿并实现与所述开关触头接触相连的凸起。4. The solenoid valve according to claim 3, wherein a support sleeve is arranged in the spring, the circuit where the travel switch is located includes a wire arranged on the support sleeve, and the upper end of the support sleeve is provided with an inversion edge, The switch contact is arranged on the lower side of the inversion edge, the wire has a contact point on the inversion edge for contacting the switch contact, and the solenoid valve plunger has a pass through the inversion edge and realizes contact with the inversion edge. The switch contacts contact the associated projections. 5.根据权利要求4所述的电磁阀,其特征在于,所述柱塞包括与阀体导向配合的柱塞主体,所述柱塞主体通过过渡肩与凸起相连,弹簧用于顶起过渡肩。5. The solenoid valve according to claim 4, wherein the plunger includes a plunger body that guides and cooperates with the valve body, the plunger body is connected to the protrusion through a transition shoulder, and the spring is used to jack up the transition shoulder.
CN201720261822.4U 2017-03-16 2017-03-16 A kind of magnetic valve Expired - Fee Related CN206754548U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108626465A (en) * 2017-03-16 2018-10-09 郑州宇通客车股份有限公司 Solenoid valve
CN108709733A (en) * 2018-08-06 2018-10-26 广东万家乐燃气具有限公司 A kind of solenoid travel and air-tightness detection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108626465A (en) * 2017-03-16 2018-10-09 郑州宇通客车股份有限公司 Solenoid valve
CN108709733A (en) * 2018-08-06 2018-10-26 广东万家乐燃气具有限公司 A kind of solenoid travel and air-tightness detection device
CN108709733B (en) * 2018-08-06 2024-04-05 广东万家乐燃气具有限公司 Solenoid valve stroke and gas tightness detection device

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