技术领域technical field
本发明涉及例如通过向电磁线圈通电而成为闭阀状态、通过非通电而成为开阀状态的电磁阀。The present invention relates to, for example, a solenoid valve that is in a closed state by energizing a solenoid coil and that is in an open state by de-energizing.
背景技术Background technique
以往，这种电磁阀是通电闭型电磁阀，例如具有日本实公平8-5431号公报(专利文献1)公开的电磁阀。图9是表示在专利文献1的第2图所公开的现有的通电闭型电磁阀，该通电闭型电磁阀例如是在家庭用冷冻冰箱中，在需要速冻时断开向主冷却器的制冷剂供给，只向急速冷却器供给全制冷剂，只在必要时通电而能够关闭的小型的电磁阀。Conventionally, such a solenoid valve is an energized closed solenoid valve, for example, a solenoid valve disclosed in Japanese Patent Application Publication No. 8-5431 (Patent Document 1). Fig. 9 shows the existing energized closed solenoid valve disclosed in Fig. 2 of Patent Document 1. For example, in a domestic refrigerator, the energized closed solenoid valve is used to disconnect the main cooler when quick freezing is required. Refrigerant supply is a small solenoid valve that supplies all the refrigerant to the blast cooler and is energized and closed only when necessary.
并且，该电磁阀在阀主体a上通过切削加工等形成阀室a1和柱塞室a2，从该柱塞室a2向电磁驱动部b侧延伸的圆筒状的柱塞管a3与阀主体1a一体形成。在柱塞管a3内插通电磁驱动部b的柱塞b1，并且在柱塞管a3的端部固定吸引件b2。另外，在阀主体a上，在阀室a1与柱塞室a2之间形成阀座a4以及阀口a5。在阀室a1内配置作为“阀体”的球阀c。In addition, in this solenoid valve, a valve chamber a1 and a plunger chamber a2 are formed on the valve body a by cutting or the like. Formed in one piece. The plunger b1 of the electromagnetic drive part b is inserted into the plunger tube a3, and the attractor b2 is fixed to the end of the plunger tube a3. In addition, in the valve main body a, a valve seat a4 and a valve port a5 are formed between the valve chamber a1 and the plunger chamber a2. A ball valve c as a "valve body" is arranged in the valve chamber a1.
另外，球阀c在形成于盲栓d的圆筒状的导向件d1内与阀弹簧e一起配置，将盲栓d螺纹结合在阀室a1(阀主体a)的端部并封闭阀室a1。阀口a5是连通阀室a1和柱塞室a2的结构，在柱塞b1的端部安装插入杆插入孔b11内的杆b3。并且，该杆b3在阀口a5内通过并与球阀c抵接。另外，在阀主体a上安装与阀室a1连通的一次侧接头f和与柱塞室a2连通的二次侧接头g。In addition, the ball valve c is arranged together with the valve spring e in the cylindrical guide d1 formed in the blind plug d, and the blind plug d is screwed to the end of the valve chamber a1 (valve main body a) to close the valve chamber a1. The valve port a5 is configured to communicate with the valve chamber a1 and the plunger chamber a2, and the rod b3 inserted into the rod insertion hole b11 is attached to the end of the plunger b1. And, the rod b3 passes through the valve port a5 and comes into contact with the ball valve c. In addition, a primary-side joint f communicating with the valve chamber a1 and a secondary-side joint g communicating with the plunger chamber a2 are attached to the valve main body a.
即，从一次侧接头f进入阀室a1的流体通过阀口a5朝向二次侧接头g，若向电磁驱动部b的电磁线圈b4通电，则柱塞b1被吸引件b2吸引而被拉起，球阀c被阀弹簧e推起而封闭阀座a4的阀口a5。另外，若使电磁线圈b4非通电，则通过螺旋弹簧b5的弹力，柱塞b1从吸引件b2离开，杆b3使球阀c移动，阀口a5为开。That is, the fluid entering the valve chamber a1 from the primary side joint f passes through the valve port a5 toward the secondary side joint g, and when the electromagnetic coil b4 of the electromagnetic driving part b is energized, the plunger b1 is attracted by the suction piece b2 and pulled up. The ball valve c is pushed up by the valve spring e to close the valve port a5 of the valve seat a4. In addition, when the electromagnetic coil b4 is de-energized, the plunger b1 is separated from the attractor b2 by the elastic force of the coil spring b5, the rod b3 moves the ball valve c, and the valve port a5 is opened.
现有技术文献prior art literature
专利文献1：日本实公平8-5431号公报Patent Document 1: Japanese Publication No. 8-5431
在现有的电磁阀中，在相对于柱塞b1安装杆b3时，在形成于柱塞b1的杆插入孔b11内压入杆b3。因此，通过杆插入孔b11的内径和杆b3的直径的组合，在杆b3的固定保持力、相对于柱塞b1的杆b3的前端的位置、柱塞b1和杆b3的同心性产生不均，存在产品管理困难之类的问题。In the conventional solenoid valve, when attaching the rod b3 to the plunger b1, the rod b3 is press-fitted into the rod insertion hole b11 formed in the plunger b1. Therefore, due to the combination of the inner diameter of the rod insertion hole b11 and the diameter of the rod b3, unevenness occurs in the fixed holding force of the rod b3, the position of the tip of the rod b3 with respect to the plunger b1, and the concentricity between the plunger b1 and the rod b3. , there are issues like product management difficulties.
发明内容Contents of the invention
本发明的目的在于提供在电磁驱动部的柱塞上具备杆，该杆通过阀口与阀体抵接，利用杆使阀体移动而对阀口进行开闭的电磁阀中，相对于柱塞的杆的固定保持力稳定，并且，能容易地确保杆的前端的定位以及同心性的电磁阀。The purpose of the present invention is to provide a rod on the plunger of the electromagnetic driving part, the rod is in contact with the valve body through the valve port, and the valve body is moved by the rod to open and close the valve port. The fixed holding force of the rod is stable, and the positioning and concentricity of the tip of the rod can be easily ensured by the solenoid valve.
方案一的电磁阀在电磁驱动部的柱塞上具备杆，并且，在使流体流动的阀口的一侧具备阀体，上述杆通过上述阀口与上述阀体抵接，使上述杆与上述柱塞一起向该柱塞的轴线方向移动而使上述阀体移动，从而对上述阀口进行开闭，在上述柱塞的上述轴线上形成杆插入孔，并且，在该杆插入孔插入上述杆，在上述柱塞的以上述轴线为中心的圆周上嵌紧固定，在该柱塞上设置凹槽。The electromagnetic valve of the first proposal is equipped with a rod on the plunger of the electromagnetic drive part, and has a valve body on the side of the valve port through which the fluid flows. The rod is in contact with the valve body through the valve port, so that the rod and the The plunger moves in the axial direction of the plunger to move the valve body to open and close the valve port, and a rod insertion hole is formed on the axis of the plunger, and the rod is inserted into the rod insertion hole. , embedded and fixed on the circumference of the above-mentioned plunger centered on the above-mentioned axis, and a groove is provided on the plunger.
方案二的电磁阀是方案一所记载的电磁阀，在上述柱塞的上述杆插入孔的开口部侧的端面的上述圆周上设置上述凹槽。The solenoid valve according to claim 2 is the solenoid valve described in claim 1, wherein the groove is provided on the circumference of the end surface of the plunger on the opening side of the rod insertion hole.
方案三的电磁阀是方案一所记载的电磁阀，上述柱塞具有以上述轴线为中心的圆柱部，在该圆柱部的外周的上述圆周上设置上述凹槽。The solenoid valve according to claim 3 is the solenoid valve described in claim 1, wherein the plunger has a cylindrical portion centered on the axis, and the groove is provided on the circumference of the outer periphery of the cylindrical portion.
方案四的电磁阀是方案二或三所记载的电磁阀，设置多个上述凹槽。The solenoid valve of plan four is the solenoid valve recorded in plan two or three, and a plurality of the above-mentioned grooves are provided.
方案五的电磁阀是方案四所记载的电磁阀，设置奇数个上述凹槽。The solenoid valve of plan five is the solenoid valve recorded in plan four, and an odd number of the above-mentioned grooves is set.
方案六的电磁阀是方案一至五所记载的电磁阀，在以上述轴线为中心的上述圆周上的绕圆周的均等的位置进行嵌紧固定。The electromagnetic valve of the sixth aspect is the electromagnetic valve described in the first to fifth aspects, and is fixedly fixed at equal positions around the circumference on the above-mentioned circumference centered on the above-mentioned axis.
方案七的电磁阀是方案二或三所记载的电磁阀，在上述圆周上的整周设置上述凹槽。The solenoid valve of plan seven is the solenoid valve described in plan two or three, and the above-mentioned groove is provided on the entire circumference of the above-mentioned circumference.
方案八的电磁阀是方案三所记载的电磁阀，在上述杆的插入上述杆插入孔内的部分的圆周具有收缩部，在上述柱塞的上述收缩部的外侧的上述圆周上设置上述凹槽。The solenoid valve of the eighth scheme is the solenoid valve described in the third scheme, and the circumference of the portion of the rod inserted into the rod insertion hole has a constricted portion, and the groove is provided on the circumference outside the constricted portion of the plunger. .
方案九的电磁阀在电磁驱动部的柱塞上具备杆，并且，在使流体流动的阀口的一侧具备阀体，上述杆通过上述阀口与上述阀体抵接，使上述杆与上述柱塞一起沿该柱塞的轴线方向移动而使上述阀体移动，从而对上述阀口进行开闭，在上述柱塞的上述轴线上形成杆插入孔，并且，上述杆具有扩径部，在将上述扩径部插入上述杆插入孔的状态下，上述柱塞的上述杆插入孔的开口端部的轮圈朝向上述轴线被嵌紧。The solenoid valve according to the ninth proposal is equipped with a rod on the plunger of the electromagnetic drive part, and a valve body is provided on the side of the valve port through which the fluid flows, and the rod is in contact with the valve body through the valve port, so that the rod is in contact with the valve body. The plunger moves along the axial direction of the plunger to move the valve body to open and close the valve port. A rod insertion hole is formed on the axis of the plunger, and the rod has an enlarged diameter portion. In a state where the enlarged diameter portion is inserted into the rod insertion hole, the rim of the opening end of the rod insertion hole of the plunger is fitted toward the axis.
本发明的效果如下。The effects of the present invention are as follows.
根据方案一至八的电磁阀，在柱塞的轴线上的杆插入孔插入杆，在以柱塞的轴线为中心的圆周上嵌紧固定，在该圆周上设置凹槽，将杆固定在柱塞上。因此，通过由在杆周围的柱塞的嵌紧固定产生的塑性变形而施加压力，以预定的力保持杆。另外，例如能够在将杆插入杆插入孔底的状态下嵌紧，能通过杆插入孔的深度和杆的长度的设定，正确地设定相对于柱塞的杆的端部的轴线方向的位置。According to the solenoid valves of schemes 1 to 8, the rod insertion hole on the axis of the plunger is inserted into the rod, and it is embedded and fixed on the circumference centered on the axis of the plunger, and a groove is provided on the circumference to fix the rod on the plunger. superior. Therefore, the rod is held with a predetermined force by applying pressure by plastic deformation caused by the caulking of the plunger around the rod. In addition, for example, the rod can be inserted into the bottom of the rod in the state of the hole, and the depth of the rod insertion hole and the length of the rod can be set to accurately set the axial direction of the end of the rod relative to the plunger. Location.
根据方案二的电磁阀，由于在柱塞的杆插入孔的开口部侧的端面设置凹槽，因此，能在相对于杆近的位置嵌紧固定，能容易地调整相对于杆的固定保持力、同心性。According to the solenoid valve according to the second aspect, since the groove is provided on the end surface of the opening side of the rod insertion hole of the plunger, it can be fitted and fixed at a position close to the rod, and the fixing and holding force relative to the rod can be easily adjusted. , Concentricity.
根据方案三的电磁阀，除了方案一的效果之外，由于在柱塞的圆柱部的外周设置凹槽，因此，能通过与杆的轴线正交的方向的塑性变形的应力，可靠地施加固定保持力。According to the electromagnetic valve of the third plan, in addition to the effect of the first plan, since the groove is provided on the outer periphery of the cylindrical part of the plunger, the stress of the plastic deformation in the direction perpendicular to the axis of the rod can be reliably applied. Retentivity.
根据方案四的电磁阀，除了方案二或三的效果之外，由圆周上的均等的位置的多个凹槽的塑性变形产生的应力相互补充各应力的偏差，得到固定保持力、同心性。According to the solenoid valve of plan 4, in addition to the effect of plan 2 or 3, the stresses generated by the plastic deformation of the plurality of grooves at equal positions on the circumference complement each other with deviations of the stresses to obtain fixed holding force and concentricity.
根据方案五的电磁阀，除了方案四的效果之外，由圆周上的均等的位置的奇数个凹槽的塑性变形产生的应力相互补充各应力的偏差，得到固定保持力、同心性。According to the electromagnetic valve of the fifth proposal, in addition to the effect of the fourth proposal, the stresses generated by the plastic deformation of the odd number of grooves at equal positions on the circumference complement each other, and the deviation of each stress is obtained, and the fixed holding force and concentricity are obtained.
根据方案六的电磁阀，除了方案一至五任一项的效果，由于在以轴线为中心的绕圆周的均等的位置进行嵌紧固定，因此，能确保柱塞和杆的同心性。According to the electromagnetic valve of the sixth proposal, in addition to the effects of any one of the first to fifth proposals, the concentricity of the plunger and the rod can be ensured because the clamping and fixing are performed at equal positions around the circumference with the axis as the center.
根据方案七的电磁阀，除了方案二或三的效果之外，由于在圆周上的整周设置凹槽，因此，能绕杆均等地施加由嵌紧的塑性变形产生的应力，得到固定保持力、同心性。According to the electromagnetic valve of the seventh scheme, in addition to the effect of the second or third scheme, since the groove is provided on the entire circumference of the circumference, the stress generated by the plastic deformation of the clamping can be applied evenly around the rod, and the fixed holding force can be obtained. , Concentricity.
根据方案八的电磁阀，除了方案三的效果之外，由于柱塞的塑性变形了的部分咬入杆的收缩部，因此，能防止杆拔出。According to the solenoid valve of the eighth aspect, in addition to the effect of the third aspect, since the plastically deformed portion of the plunger bites into the constricted portion of the rod, the rod can be prevented from being pulled out.
根据方案九的电磁阀，由于能只通过将杆插入孔的开口端部的轮圈嵌紧在杆的扩径部侧将杆固定在柱塞上，因此，该电磁阀的组装作业容易。According to the solenoid valve according to the ninth aspect, since the rod can be fixed to the plunger only by fitting the rim at the opening end of the rod insertion hole to the enlarged diameter portion side of the rod, the assembly operation of the solenoid valve is easy.
附图说明Description of drawings
图1是本发明的第一实施方式的通电闭型电磁阀的开阀状态的纵剖视图。1 is a longitudinal sectional view of an open state of an energized closed solenoid valve according to a first embodiment of the present invention.
图2是表示第一实施方式的柱塞和杆的固定结构的图。Fig. 2 is a diagram showing a fixing structure of a plunger and a rod according to the first embodiment.
图3是表示第一实施方式的柱塞和杆的固定结构的变形例一以及变形例二的图。FIG. 3 is a diagram showing Modification 1 and Modification 2 of the fixing structure of the plunger and the rod of the first embodiment.
图4是表示本发明的第二实施方式的通电闭型电磁阀的柱塞和杆的固定结构的图。4 is a diagram showing a fixing structure of a plunger and a rod of an energized closed solenoid valve according to a second embodiment of the present invention.
图5是表示本发明的第三实施方式的通电闭型电磁阀的柱塞和杆的固定结构的图。5 is a diagram showing a fixing structure of a plunger and a rod of an energized closed solenoid valve according to a third embodiment of the present invention.
图6是表示本发明的第四实施方式的通电闭型电磁阀的柱塞和杆的固定结构的图。6 is a diagram showing a fixing structure of a plunger and a rod of an energized closed solenoid valve according to a fourth embodiment of the present invention.
图7是表示参考例一以及二的通电闭型电磁阀的柱塞和杆的固定结构的图。FIG. 7 is a diagram showing a fixing structure of a plunger and a rod of energized closed solenoid valves of Reference Examples 1 and 2. FIG.
图8是表示参考例三以及四的通电闭型电磁阀的柱塞和杆的固定结构的图。8 is a diagram showing a fixing structure of a plunger and a rod of energized closed solenoid valves of Reference Examples 3 and 4. FIG.
图9是表示现有的通电闭型电磁阀的一例的纵剖视图。Fig. 9 is a longitudinal sectional view showing an example of a conventional energized closed solenoid valve.
图中：1—阀主体，11—阀室，12—柱塞室，15a—一次侧接头，16a—二次侧接头，2—阀组件，21—支架部，22—球阀(阀体)，23—盖部件，24—阀弹簧，25—阀口，3—电磁驱动部，31—柱塞，31a—杆插入孔，311—杆，32—柱塞，32a—杆插入孔，321—杆，33—柱塞，33a—杆插入孔，331—杆，34—柱塞，34a—杆插入孔，341—杆，10—通电闭型电磁阀。In the figure: 1—valve main body, 11—valve chamber, 12—plunger chamber, 15a—primary side joint, 16a—secondary side joint, 2—valve assembly, 21—support part, 22—ball valve (valve body), 23—cover part, 24—valve spring, 25—valve port, 3—electromagnetic drive part, 31—plunger, 31a—rod insertion hole, 311—rod, 32—plunger, 32a—rod insertion hole, 321—rod , 33—plunger, 33a—rod insertion hole, 331—rod, 34—plunger, 34a—rod insertion hole, 341—rod, 10—energized closed solenoid valve.
具体实施方式detailed description
接着，参照附图说明本发明的电磁阀的实施方式。图1是第一实施方式的通电闭型电磁阀的开阀状态的纵剖视图，该通电闭型电磁阀是本发明的电磁阀的一例。另外，以下的说明中的“上下”的概念与图1的附图中的上下对应。Next, embodiments of the solenoid valve of the present invention will be described with reference to the drawings. 1 is a longitudinal sectional view of an open state of an energized closed solenoid valve which is an example of the solenoid valve of the present invention according to a first embodiment. In addition, the concept of "up and down" in the following description corresponds to the up and down in the drawing of FIG. 1 .
该实施方式的通电闭型电磁阀10具有黄铜等金属制的阀主体1。在阀主体1上通过切削加工形成阀室11、柱塞室12、与阀室11和柱塞室12连通的插通孔13、柱塞管安装孔14、配管连接孔15以及配管连接孔16。另外，在阀主体1上，通过形成插通孔13而在阀室11与柱塞室12之间形成圆环状的支撑座部17。即，支撑座部17在中心具有插通孔13。另外，在柱塞室12内具有比支撑座部17直径大的以轴线L为中心的圆筒部18。其中，阀室11、柱塞室12、插通孔13、柱塞管安装孔14、配管连接孔15、支撑座部17以及圆筒部18以轴线L为中心形成为同轴。另外，轴线L也是通过后述的柱塞31的中心的轴线。The energized closed solenoid valve 10 of this embodiment has a valve body 1 made of metal such as brass. The valve chamber 11, the plunger chamber 12, the insertion hole 13 communicating with the valve chamber 11 and the plunger chamber 12, the plunger tube mounting hole 14, the piping connection hole 15, and the piping connection hole 16 are formed on the valve body 1 by cutting. . In addition, an annular support seat portion 17 is formed between the valve chamber 11 and the plunger chamber 12 by forming the insertion hole 13 in the valve body 1 . That is, the support seat part 17 has the insertion hole 13 in the center. In addition, the plunger chamber 12 has a cylindrical portion 18 centered on the axis L having a larger diameter than the support seat portion 17 . Among them, the valve chamber 11 , the plunger chamber 12 , the insertion hole 13 , the plunger tube mounting hole 14 , the pipe connection hole 15 , the support seat portion 17 , and the cylindrical portion 18 are formed coaxially around the axis L. In addition, the axis L is also an axis passing through the center of the plunger 31 described later.
在柱塞管安装孔14上安装后述的电磁驱动部3的不锈钢制的圆筒状的柱塞管3a。在配管连接孔15上安装流体如箭头所示流入的一次侧接头15a，在配管连接孔16上安装流体如箭头所示流出的二次侧接头16a。一次侧接头15a通过一次口15b与阀室11连通，二次侧接头16a通过二次口16b与柱塞室12连通。柱塞管3a、一次侧接头15a以及二次侧接头16a相对于阀主体1，分别在柱塞安装孔14、配管连接孔15、配管连接孔16的开口端部的周围，通过钎焊固定在阀主体1上。A stainless steel cylindrical plunger tube 3 a of the electromagnetic drive unit 3 described later is attached to the plunger tube mounting hole 14 . A primary-side joint 15 a through which fluid flows in as indicated by an arrow is attached to the pipe connection hole 15 , and a secondary-side joint 16 a through which a fluid flows out as indicated by an arrow is attached to the pipe connection hole 16 . The primary side joint 15a communicates with the valve chamber 11 through the primary port 15b, and the secondary side joint 16a communicates with the plunger chamber 12 through the secondary port 16b. The plunger tube 3a, the primary side joint 15a, and the secondary side joint 16a are fixed to the valve main body 1 by brazing around the opening ends of the plunger mounting hole 14, the pipe connection hole 15, and the pipe connection hole 16, respectively. On the valve body 1.
在阀室11内收纳阀组件2。阀组件2包括金属制且大致圆筒状的支架部21、作为“阀体”的金属制的球阀22、薄型圆柱状的盖部件23以及阀弹簧24。支架部21一体地形成在中心具有阀口25的阀座部21A、具有与球阀22的外径一致的内径的圆筒状的阀导向部21B而构成。并且，在阀导向部21B内通过阀弹簧24嵌入球阀22，从阀导向部21B的端部嵌入盖部件23，通过对该阀导向部21B的端部进行嵌紧，固定盖部件23。另外，盖部件23如后所述可以是方柱等部件等。The valve assembly 2 is accommodated in the valve chamber 11 . The valve assembly 2 includes a metal and substantially cylindrical holder portion 21 , a metal ball valve 22 serving as a “valve body”, a thin cylindrical cover member 23 , and a valve spring 24 . The bracket part 21 is formed integrally with the valve seat part 21A having the valve port 25 at the center, and the cylindrical valve guide part 21B having the inner diameter corresponding to the outer diameter of the ball valve 22 . Then, the ball valve 22 is fitted into the valve guide 21B via the valve spring 24 , the cover member 23 is fitted from the end of the valve guide 21B, and the cover member 23 is fixed by fitting the end of the valve guide 21B. In addition, the cover member 23 may be a member such as a square pillar or the like as described later.
由此，在阀组件2中，球阀22被保持在支架部21内，通过阀导向部21B以只在轴线L方向移动的方式被导向。在阀导向部21B的侧部，在阀座部21A侧形成连通阀室11和阀口25的通道21Ba。另外，在阀导向部21B，形成用于使贮存在球阀22下的液体向阀室11侧流的流道21Bb。上述盖部件23是薄型圆柱状的形状，但同样的盖部件例如可以是六方柱、四方柱等方柱部件。在该情况下，在对阀导向部21B的端部进行了嵌紧后，能利用方柱的侧面的部分，与上述流道21Bb同样地能够使贮存在球阀22下的液体流向阀室11侧。另外，可以在圆柱状的部件的侧面设置用于使液体流向阀室11侧的纵槽。当然在这种情况下，可以没有流道21Bb。Accordingly, in the valve assembly 2 , the ball valve 22 is held in the holder portion 21 and guided so as to move only in the axis L direction by the valve guide portion 21B. On the side of the valve guide portion 21B, a passage 21Ba communicating with the valve chamber 11 and the valve port 25 is formed on the valve seat portion 21A side. In addition, a flow path 21Bb for allowing the liquid stored under the ball valve 22 to flow toward the valve chamber 11 side is formed in the valve guide portion 21B. The above-mentioned cover member 23 has a thin cylindrical shape, but the same cover member may be a square column member such as a hexagonal column or a square column, for example. In this case, after the end portion of the valve guide portion 21B is fastened, the side surface of the square pillar can be used to allow the liquid stored under the ball valve 22 to flow to the valve chamber 11 side in the same way as the flow path 21Bb described above. . In addition, a vertical groove for allowing the liquid to flow toward the valve chamber 11 side may be provided on the side surface of the columnar member. In this case, of course, there may be no flow channel 21Bb.
阀部件21A具有直径随着从阀导向部21B离开而扩径的锥面21Aa。另外，在阀主体1的圆筒部18的内周形成阴螺纹部18a，在阀座部21A的外周形成与该阴螺纹部18a螺纹结合的阳螺纹部21Ab。由此，通过将阀导向部21B在插通孔13内插通，阀座部21A的锥面21Aa与支撑座部17的内侧端部(插通孔13的开口端部)抵接，将阳螺纹部21Ab螺纹结合至阴螺纹部18a并拧入，固定在阀主体1上。该阀座部21A的锥面21Aa和支撑座部17的内侧端部对阀室11和柱塞室12之间进行封闭。可以在支撑座部17与锥面21Aa之间配设密封部件。另外，在阀座部21A的端部形成供拧入时的夹具卡合的负槽21Ac。The valve member 21A has a tapered surface 21Aa whose diameter increases as it moves away from the valve guide portion 21B. In addition, a female thread portion 18 a is formed on the inner periphery of the cylindrical portion 18 of the valve body 1 , and a male thread portion 21Ab screwed to the female thread portion 18 a is formed on the outer periphery of the valve seat portion 21A. Thus, when the valve guide portion 21B is inserted into the insertion hole 13, the tapered surface 21Aa of the valve seat portion 21A comes into contact with the inner end portion (the opening end portion of the insertion hole 13) of the support seat portion 17, and the male and female members are connected to each other. The threaded part 21Ab is screwed into the female threaded part 18a and screwed in, and is fixed to the valve main body 1 . The tapered surface 21Aa of the valve seat portion 21A and the inner end portion of the support seat portion 17 seal between the valve chamber 11 and the plunger chamber 12 . A sealing member may be disposed between the support seat portion 17 and the tapered surface 21Aa. In addition, a negative groove 21Ac into which a jig engages at the time of screwing is formed at the end of the valve seat portion 21A.
在电磁驱动部3中，在柱塞管3a内插通柱塞31，该柱塞31能在轴线L方向(上下方向)滑动地配置。另外，在柱塞管3a的上端嵌合吸引件3b，在柱塞31与吸引件3b之间配设在使柱塞31从吸引件3b离开的方向加力的柱塞弹簧3c。在柱塞管3a的外周通过线轴3d配设电磁线圈3e，电磁线圈3e和线轴3d由其外周的树脂3f模制。另外，线轴3d以及树脂3f由外箱3g和磁性导向件3h覆盖，外箱3g利用螺钉N将上部拧紧在吸引件3b上。在外箱3g外拉出用于与电磁线圈3e通电的引线3i。柱塞31、吸引件3b、外箱3g以及磁性导向件3h分别由磁性体构成。吸引件3b相对于不锈钢制的柱塞管3a通过对图中以符号“P”表示的接合部的全周进行焊接而固定。由此，气密地封闭柱塞管3a内。In the electromagnetic drive unit 3 , a plunger 31 is inserted into the plunger tube 3 a, and the plunger 31 is arranged so as to be slidable in the axis L direction (vertical direction). In addition, an attractor 3b is fitted to the upper end of the plunger tube 3a, and a plunger spring 3c is disposed between the plunger 31 and the attractor 3b and biased in a direction in which the plunger 31 separates from the attractor 3b. An electromagnetic coil 3e is disposed on the outer periphery of the plunger tube 3a via a bobbin 3d, and the electromagnetic coil 3e and the bobbin 3d are molded from a resin 3f on the outer periphery thereof. In addition, the bobbin 3d and the resin 3f are covered with an outer case 3g and a magnetic guide 3h, and the upper part of the outer case 3g is screwed to the attractor 3b with screws N. Lead wires 3i for energizing the electromagnetic coil 3e are drawn out of the outer case 3g. The plunger 31, the attractor 3b, the outer case 3g, and the magnetic guide 3h are each made of a magnetic body. The suction tool 3b is fixed to the plunger tube 3a made of stainless steel by welding the entire periphery of the joint portion indicated by the symbol "P" in the figure. Thereby, the inside of the plunger tube 3a is airtightly sealed.
如后所述，在柱塞31的阀组件2侧形成杆插入孔31a，在该杆插入孔31a，安装杆311(圆棒)。并且，杆311在阀座部21A的阀口25内插通，该杆311的端部与球阀22抵接。该柱塞31和杆311的安装结构之后说明。As will be described later, a rod insertion hole 31 a is formed on the valve unit 2 side of the plunger 31 , and a rod 311 (round rod) is attached to the rod insertion hole 31 a. Further, the rod 311 is inserted through the valve port 25 of the valve seat portion 21A, and the end portion of the rod 311 comes into contact with the ball valve 22 . The mounting structure of the plunger 31 and the rod 311 will be described later.
图1是电磁驱动部3为非通电状态，柱塞31通过柱塞弹簧3c的作用力和柱塞31的自重利用杆311将球阀22向下方按。由此，球阀22从阀座部21A离开，阀口25成为开阀状态。若对电磁驱动部3的电磁线圈3e通电，则柱塞31克服柱塞弹簧3c的作用力被吸引至吸引件3b侧，利用阀弹簧24的作用力，球阀22与柱塞31以及杆311一起上升并落座到阀座部21A，阀口25为闭阀状态。FIG. 1 shows that the electromagnetic drive part 3 is in a non-energized state, and the plunger 31 pushes the ball valve 22 downward by the force of the plunger spring 3c and the self-weight of the plunger 31 using the rod 311 . As a result, the ball valve 22 is separated from the valve seat portion 21A, and the valve port 25 is opened. If the electromagnetic coil 3e of the electromagnetic drive part 3 is energized, the plunger 31 is attracted to the attractor 3b side against the force of the plunger spring 3c, and the ball valve 22, together with the plunger 31 and the rod 311, is attracted by the force of the valve spring 24. Ascending and seating on the valve seat portion 21A, the valve port 25 is in a closed state.
图2是表示第一实施方式的柱塞和杆的固定结构的图，图2(A)是柱塞以及杆的一部分纵剖视图，图2(B)是柱塞以及杆的仰视图。如图2所示，柱塞31一体地形成具有与柱塞管3a的内径一致的直径的柱塞主体31A、直径比柱塞主体31A小的圆柱部31B。柱塞主体31A和圆柱部31B以轴线L为中心。在圆柱部31B的中心形成以轴线L为中心的圆柱形的杆插入孔31a。另外，杆311是与杆插入孔31a的内径一致的外径的不锈钢制的棒部件，该杆311的两端为与轴线L正交的平坦面。杆311以在杆插入孔31a内突出至最里的方式插入。并且，在柱塞31的圆柱部31B中的杆插入孔31a的开口部侧的端面31B1，对位于以轴线L为中心的圆周S1上的均等的位置的三处进行嵌紧。2 is a diagram showing a fixing structure of a plunger and a rod according to the first embodiment, FIG. 2(A) is a partial longitudinal sectional view of the plunger and the rod, and FIG. 2(B) is a bottom view of the plunger and the rod. As shown in FIG. 2 , the plunger 31 is integrally formed with a plunger body 31A having a diameter equal to the inner diameter of the plunger tube 3 a and a cylindrical portion 31B having a smaller diameter than the plunger body 31A. The plunger main body 31A and the cylindrical portion 31B are centered on the axis L. As shown in FIG. A cylindrical rod insertion hole 31 a centered on the axis L is formed at the center of the cylindrical portion 31B. In addition, the rod 311 is a rod member made of stainless steel having an outer diameter corresponding to the inner diameter of the rod insertion hole 31 a, and both ends of the rod 311 are flat surfaces perpendicular to the axis L. As shown in FIG. The rod 311 is inserted into the rod insertion hole 31a so as to protrude to the innermost side. Then, the end surface 31B1 on the opening side of the rod insertion hole 31a in the cylindrical portion 31B of the plunger 31 is fitted at three positions at equal positions on the circumference S1 centered on the axis L.
作为通过嵌紧形成的“凹槽”的嵌紧部312如图2(B)所示呈圆弧状的形状，在包围杆插入孔31a的以轴线L为中心的圆周S1上等间隔地形成三处。即，在嵌紧部312，柱塞31的母材料向杆插入孔31a侧塑性变形，将由该塑性变形产生的应力施加在杆311上，将杆311固定在柱塞31上。另外，如上述第一实施方式、后述的其他实施方式以及变形例那样，对柱塞的一部分进行嵌紧而固定杆的处理是“嵌紧固定”这一处理的一例。The caulking portion 312, which is a "groove" formed by caulking, has an arc shape as shown in FIG. three places. That is, at the caulking portion 312 , the base material of the plunger 31 is plastically deformed toward the rod insertion hole 31 a , and the stress generated by the plastic deformation is applied to the rod 311 , thereby fixing the rod 311 to the plunger 31 . In addition, as in the above-mentioned first embodiment, other embodiments and modified examples described later, the process of fastening a part of the plunger to fix the rod is an example of the process of "fitting and fixing".
这样，由于对柱塞31的杆插入孔31a的开口部侧的端面31B1进行嵌紧，因此，能对相对于杆311近的位置进行嵌紧。因此，能容易地调整相对于杆311的固定保持力、同心性。这种情况对于以下的变形例一以及变形例二也相同。另外，由于对以轴线L为中心的圆周S1上的均等的三处进行嵌紧，因此，由在三处的塑性变形产生的应力相互补充各应力的偏差，得到固定保持力、同心性。这种情况对于以下的变形例二也相同。In this way, since the end surface 31B1 on the opening side of the rod insertion hole 31 a of the plunger 31 is fitted, a position close to the rod 311 can be fitted. Therefore, the fixing holding force and concentricity with respect to the rod 311 can be easily adjusted. This is the same for the first modification and the second modification described below. In addition, since the caulking is performed at three equal locations on the circumference S1 centered on the axis L, the stresses generated by plastic deformation at the three locations complement each other with deviations in respective stresses, thereby obtaining fixing retention and concentricity. This is the same for the second modified example below.
图3是表示柱塞31和杆311的固定结构的变形例一以及变形例二的图。另外，在以下的变形例一、二、第二至第四实施方式以及参考例一至四中，仅对柱塞以及杆进行说明，但通电闭型电磁阀的整体结构与图1所示的第一实施方式相同。另外，对与第一实施方式相同的要素以及对应的要素标注相同符号，标注了这些相同符号的要素为相同的结构且起到相同的作用效果，适当省略重复的说明。FIG. 3 is a diagram showing Modification 1 and Modification 2 of the fixing structure of the plunger 31 and the rod 311 . In addition, in the following modified examples 1, 2, 2nd to 4th embodiments, and reference examples 1 to 4, only the plunger and the rod will be described, but the overall structure of the energized closed solenoid valve is the same as that of the first embodiment shown in FIG. 1 . One embodiment is the same. In addition, the same reference numerals are assigned to the same elements and corresponding elements as those in the first embodiment, and these elements with the same reference numerals have the same configuration and have the same operation and effect, and redundant descriptions are appropriately omitted.
图3(A)的变形例一对以轴线L为中心的圆周S1上的整周进行嵌紧，在包围杆插入孔31a的圆周S1上的整周形成圆形的嵌紧部313。这样，由于对整周进行嵌紧，因此，能将由嵌紧的塑性变形产生的应力均等地施加在杆311的周围，因此，得到固定保持力、同心性。图3(B)的变形例二在圆柱部31B的端面31B1对以轴线L为中心的圆周S1，上的均等的位置的三处进行嵌紧，将三角形状的嵌紧部314在圆周S1，上以等间隔形成三处。In the modified example of FIG. 3(A), the entire circumference of the circumference S1 centered on the axis L is clamped, and a circular clamping portion 313 is formed on the entire circumference of the circumference S1 surrounding the rod insertion hole 31a. In this way, since the caulking is performed on the entire circumference, the stress due to the plastic deformation of the caulking can be uniformly applied to the periphery of the rod 311 , so that a fixed holding force and concentricity can be obtained. Modification 2 of FIG. 3(B) is performed on the end face 31B1 of the cylindrical portion 31B at three equal positions on the circumference S1 centered on the axis L, and the triangular-shaped clamping portion 314 is clamped on the circumference S1. Three places are formed at equal intervals above.
图4是表示本发明的第二实施方式的通电闭型电磁阀的柱塞和杆的固定结构的图。图4(A)是柱塞以及杆的一部分纵剖视图，图4(B)是柱塞以及杆的仰视图。该第二实施方式的柱塞32一体地形成具有与柱塞管3a的内径一致的直径的柱塞主体32A和直径比柱塞主体32A小的圆柱部32B，在圆柱部32B具备杆321。4 is a diagram showing a fixing structure of a plunger and a rod of an energized closed solenoid valve according to a second embodiment of the present invention. FIG. 4(A) is a partial longitudinal sectional view of the plunger and the rod, and FIG. 4(B) is a bottom view of the plunger and the rod. The plunger 32 of the second embodiment is integrally formed with a plunger body 32A having a diameter equal to the inner diameter of the plunger tube 3a and a cylindrical portion 32B having a smaller diameter than the plunger body 32A, and the cylindrical portion 32B is provided with a rod 321 .
并且，在该第二实施方式中，通过滚子嵌紧加工在圆柱部32B的外周的圆周S2上进行嵌紧。由此，在圆柱部32B的外周沿整周形成作为“凹槽”的槽状的嵌紧部322。这样，由于对柱塞32的圆柱部32B的外周进行嵌紧，因此，能相对于杆321，通过与轴线L正交的方向的塑性变形的应力，能可靠地施加固定保持力。In addition, in this second embodiment, the outer circumference S2 of the cylindrical portion 32B is caulked by roller caulking. Thereby, the groove-shaped fitting part 322 which is a "groove" is formed in the outer periphery of the cylindrical part 32B over the whole circumference. As described above, since the outer periphery of the cylindrical portion 32B of the plunger 32 is fitted tightly, a fixing and holding force can be reliably applied to the rod 321 by the stress of plastic deformation in a direction perpendicular to the axis L.
图5是表示本发明的第三实施方式的通电闭型电磁阀的柱塞和杆的固定结构的图。图5(A)是柱塞以及杆的一部分纵剖视图，图5(B)是柱塞以及杆的仰视图。该第三实施方式的柱塞33一体地形成具有与柱塞管3a的内径一致的直径的柱塞主体33A和直径比柱塞主体33A小的圆柱部33B，在圆柱部33B具备杆331。在该第三实施方式中，在杆331的一部分具有收缩部331a。5 is a diagram showing a fixing structure of a plunger and a rod of an energized closed solenoid valve according to a third embodiment of the present invention. Fig. 5(A) is a partial longitudinal sectional view of the plunger and the rod, and Fig. 5(B) is a bottom view of the plunger and the rod. The plunger 33 of the third embodiment is integrally formed with a plunger main body 33A having a diameter equal to the inner diameter of the plunger tube 3a and a cylindrical portion 33B having a smaller diameter than the plunger main body 33A, and the cylindrical portion 33B is provided with a rod 331 . In this third embodiment, a part of the rod 331 has a constricted portion 331a.
并且，与第二实施方式相同，通过滚子嵌紧，在收缩部331a的位置，在圆柱部33B的外周的圆周S3上进行嵌紧。由此，在圆柱部33B的外周沿整周形成槽状的嵌紧部332。另外，圆柱部33B的塑性变形了的部分(母材)咬入收缩部331a。由此，能防止杆331拔出。另外，由于对圆柱部33B的外周进行嵌紧，因此，能相对于杆331，通过与轴线L正交的方向的塑性变形的应力，可靠地施加固定保持力。Furthermore, similarly to the second embodiment, by the roller fitting, fitting is performed on the circumference S3 of the outer periphery of the columnar portion 33B at the position of the constricted portion 331 a. Thereby, the groove-shaped fitting part 332 is formed in the outer periphery of the cylindrical part 33B along the whole circumference. In addition, the plastically deformed portion (base material) of the cylindrical portion 33B bites into the constricted portion 331a. Thereby, pulling out of the rod 331 can be prevented. In addition, since the outer circumference of the columnar portion 33B is caulked, a fixing and holding force can be reliably applied to the rod 331 by the stress of plastic deformation in a direction perpendicular to the axis L.
图6是表示本发明的第四实施方式的通电闭型电磁阀的柱塞和杆的固定结构的图。图6(A)是柱塞以及杆的局部纵剖视图，图6(B)是柱塞以及杆的仰视图。该第四实施方式的柱塞34一体地形成具有与柱塞管3a的内径一致的直径的柱塞主体34A和直径比柱塞主体34A小的圆柱部34B。在圆柱部34B具备杆341。该第四实施方式的杆341具有直径大的扩径部341a。另外，柱塞34的圆柱部34B具有插入扩径部341a的杆插入孔34a，在该杆插入孔34a的开口端部具有轮圈342。扩径部341a的轴线L方向的长度与杆插入孔34a的深度相同。6 is a diagram showing a fixing structure of a plunger and a rod of an energized closed solenoid valve according to a fourth embodiment of the present invention. FIG. 6(A) is a partial longitudinal sectional view of the plunger and the rod, and FIG. 6(B) is a bottom view of the plunger and the rod. In the plunger 34 of the fourth embodiment, a plunger body 34A having a diameter corresponding to the inner diameter of the plunger tube 3 a and a cylindrical portion 34B having a smaller diameter than the plunger body 34A are integrally formed. The columnar portion 34B is provided with a rod 341 . The rod 341 of this fourth embodiment has an enlarged diameter portion 341a having a large diameter. In addition, the cylindrical portion 34B of the plunger 34 has a rod insertion hole 34 a into which the diameter-enlarged portion 341 a is inserted, and a rim 342 is provided at an opening end portion of the rod insertion hole 34 a. The length of the enlarged diameter portion 341a in the direction of the axis L is the same as the depth of the rod insertion hole 34a.
并且，该第四实施方式在杆插入孔34a插入杆341的扩径部341a，将圆柱部34B的轮圈342嵌紧在扩径部341a侧。由于能只通过将杆插入孔34a的开口端部的轮圈342嵌紧在杆341的扩径部341a侧，便能将杆341固定在柱塞34上，因此，通电闭型电磁阀的组装作业变得容易。Furthermore, in the fourth embodiment, the enlarged diameter portion 341a of the rod 341 is inserted into the rod insertion hole 34a, and the rim 342 of the columnar portion 34B is fitted on the enlarged diameter portion 341a side. Since the rod 341 can be fixed on the plunger 34 only by fitting the rim 342 at the opening end of the rod insertion hole 34a tightly on the enlarged diameter portion 341a side of the rod 341, the assembly of the energized closed solenoid valve Homework made easy.
图7是表示参考例一以及参考例二的通电闭型电磁阀的柱塞和杆的固定结构的图。图7(A)的参考例一的柱塞35一体地形成具有与柱塞管3a的内径一致的直径的柱塞主体35A和直径比柱塞主体35A小的圆柱部35B，在圆柱部35B具备杆351。该参考例一的杆351在杆插入孔35a侧的端部具有叶片351a。另外，在杆插入孔35a的最里具有平孔35a1。并且，在该参考例一中，通过将杆351压入杆插入孔35a，将叶片351a在平孔35a1内进行嵌紧并扩张，将杆351固定在柱塞35。7 is a diagram showing a fixing structure of a plunger and a rod of the energized closed solenoid valves of Reference Example 1 and Reference Example 2. FIG. The plunger 35 of the reference example 1 of FIG. 7(A) integrally forms a plunger main body 35A having a diameter consistent with the inner diameter of the plunger tube 3a and a cylindrical portion 35B having a smaller diameter than the plunger main body 35A, and the cylindrical portion 35B has a Rod 351. The rod 351 of the first reference example has a blade 351a at the end portion on the rod insertion hole 35a side. In addition, a flat hole 35a1 is provided at the innermost side of the rod insertion hole 35a. In addition, in the first reference example, the rod 351 is fixed to the plunger 35 by pressing the rod 351 into the rod insertion hole 35 a to fit and expand the vane 351 a in the flat hole 35 a 1 .
图7(B)的参考例二的柱塞36一体地形成具有与柱塞管3a的内径一致的直径的柱塞主体36A和直径比柱塞主体34A小的圆柱部36B，在圆柱部36B具备杆361。在该参考例二中，通过将杆361插入杆插入孔36a，压缩圆柱部36B的外周，将杆361固定在柱塞36上。The plunger 36 of reference example 2 of FIG. Rod 361. In this second reference example, the rod 361 is fixed to the plunger 36 by inserting the rod 361 into the rod insertion hole 36 a and compressing the outer periphery of the cylindrical portion 36B.
图8是表示参考例三以及参考例四的通电闭型电磁阀的柱塞和杆的固定结构的图。图8(A)的参考例三的柱塞37一体地形成具有与柱塞管3a的内径一致的直径的柱塞主体34A和直径比柱塞主体37A小的圆柱部37B，在圆柱部37B具备杆371。在该参考例三中，通过将杆371插入杆插入孔37a，对该杆插入孔37a的开口周围进行钎焊，将杆371固定在柱塞37上。8 is a view showing a fixing structure of a plunger and a rod of the energized closed solenoid valves of Reference Example 3 and Reference Example 4. FIG. The plunger 37 of the reference example 3 of FIG. 8(A) integrally forms a plunger main body 34A having a diameter consistent with the inner diameter of the plunger tube 3a and a cylindrical portion 37B having a smaller diameter than the plunger main body 37A, and the cylindrical portion 37B has a Rod 371. In this reference example 3, the rod 371 is fixed to the plunger 37 by inserting the rod 371 into the rod insertion hole 37 a and brazing the periphery of the opening of the rod insertion hole 37 a.
图8(B)的参考例四的柱塞38一体地形成具有与柱塞管3a的内径一致的直径的柱塞主体38A、直径比柱塞主体38A小的圆柱部38B以及棒状的杆381。并且，对杆381的部分实施表面处理，使杆381硬化。The plunger 38 of Reference Example 4 in FIG. 8(B) integrally forms a plunger body 38A having a diameter equal to the inner diameter of the plunger tube 3a, a cylindrical portion 38B smaller in diameter than the plunger body 38A, and a rod-shaped rod 381. In addition, surface treatment is applied to the portion of the rod 381 to harden the rod 381 .
在通电闭型电磁阀中，为将使球阀进行动作的杆在阀口内插通的结构，杆是直径小的棒状的部件。另外，杆频繁地使球阀进行动作，因此要求是不产生弯曲等的结实的部件。另一方面，柱塞要求加工性。因此，各实施方式的柱塞是铁制(软铁)，杆期望硬质且容易得到尺寸精度的材料。根据这种情况，需要相对于柱塞固定杆的结构，通过上述实施方式能更容易地实现该结构。上述参考例四通过将杆381作为柱塞38一体地形成，能提高该杆381的尺寸精度，且通过表面处理使杆381硬化。In the energized closed solenoid valve, a rod for actuating the ball valve is inserted through the valve port, and the rod is a rod-shaped member with a small diameter. In addition, since the rod frequently operates the ball valve, it is required to be a strong member that does not bend or the like. On the other hand, the plunger requires workability. Therefore, the plunger in each embodiment is made of iron (soft iron), and the rod is desired to be hard and easy to obtain dimensional accuracy. In this case, a structure for fixing the rod to the plunger is required, and this structure can be realized more easily by the above-described embodiment. In the above reference example 4, the dimensional accuracy of the rod 381 can be improved by integrally forming the rod 381 as the plunger 38, and the rod 381 can be hardened by surface treatment.
以上的实施方式以及变形例的组合也是本发明的实施方式。例如，在第一实施方式以及第二实施方式中，使凹部形成三个，但可以是两个，也可以是四个以上的多个。其中，凹部可以是奇数个。另外，这些多个凹部如第二实施方式、第三实施方式那样，可以设在柱塞的圆柱部的外周。Combinations of the above embodiments and modified examples are also embodiments of the present invention. For example, in the first embodiment and the second embodiment, three recesses are formed, but there may be two, or a plurality of four or more. Wherein, there may be an odd number of recesses. In addition, these plurality of recesses may be provided on the outer periphery of the columnar portion of the plunger as in the second and third embodiments.
另外，在以上的实施方式中，对作为阀体是球阀的例子进行说明，但只要阀体相对于阀座部配置于阀室侧，则该阀体可以是其他形状。例如，可以是圆柱状、在端部具有锥面的针阀等。In addition, in the above embodiments, an example in which the valve body is a ball valve has been described, but the valve body may have other shapes as long as the valve body is arranged on the valve chamber side with respect to the valve seat portion. For example, it may be a cylindrical shape, a needle valve having a tapered surface at the end, or the like.
另外，在实施方式中在阀组件内具备阀弹簧，因此，即使低压差，也能可靠地保持闭阀状态，并且能防止由压力变化产生的振动等。但是，在通电闭型电磁阀中，也能利用从一次侧流入的流体的压力，阀体使阀口为闭阀状态，在这种情况下，可以没有阀弹簧。In addition, in the embodiment, since the valve spring is provided in the valve assembly, the closed state of the valve can be reliably maintained even with a low pressure difference, and vibration or the like due to pressure changes can be prevented. However, in the energized closed solenoid valve, the valve body can also make the valve port into the closed state by utilizing the pressure of the fluid flowing in from the primary side, and in this case, the valve spring does not need to be used.
以上，参照附图详细叙述本发明的实施方式，但具体的结构未限定于这些实施方式，如果具备不脱离本发明的主旨的范围的设计的变更等也包含于本发明。As mentioned above, although embodiment of this invention was described in detail with reference to drawings, the specific structure is not limited to these embodiment, The change of design etc. which do not deviate from the scope of this invention are also included in this invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-007290 | 2016-01-18 | ||
| JP2016007290AJP2017129171A (en) | 2016-01-18 | 2016-01-18 | Electromagnetic valve |
| Publication Number | Publication Date |
|---|---|
| CN106979370Atrue CN106979370A (en) | 2017-07-25 |
| CN106979370B CN106979370B (en) | 2019-06-21 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710028763.0AActiveCN106979370B (en) | 2016-01-18 | 2017-01-16 | The electromagnetic valve |
| Country | Link |
|---|---|
| JP (1) | JP2017129171A (en) |
| CN (1) | CN106979370B (en) |
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