技术领域technical field
本发明涉及通过向电磁线圈的通电而成为闭阀状态、通过非通电而成为开阀状态的通电关闭型电磁阀的制造方法以及通电关闭型电磁阀。The present invention relates to a method for manufacturing an energized-to-close electromagnetic valve and an energized-to-close electromagnetic valve in which the valve is in a closed state by energizing an electromagnetic coil and in an open state by de-energization.
背景技术Background technique
以往，作为通电关闭型电磁阀，例如有日本实公平8－5431号公报(专利文献1)以及日本特开昭54－96828号公报(专利文献2)所公开的通电关闭型电磁阀。图4是表示专利文献1所公开的以往的通电关闭型电磁阀的图，该通电关闭型电磁阀例如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而仅向急速冷却器供给所有制冷剂，是仅在需要时通电而能够关闭的小型的通电关闭型电磁阀。Conventionally, as an energization-closing solenoid valve, there exist the energization-closing solenoid valves disclosed, for example in Japanese Utility Model Publication No. 8-5431 (Patent Document 1) and Japanese Unexamined Patent Application Publication No. Sho 54-96828 (Patent Document 2). FIG. 4 is a diagram showing a conventional energized-to-close solenoid valve disclosed in Patent Document 1. For example, in a domestic refrigerator, the energized-to-close solenoid valve shuts off the refrigerant supply to the main cooler when quick freezing is required, and only It is a small energized shut-off solenoid valve that supplies all the refrigerant to the blast cooler and can be energized and closed only when necessary.
并且，该电磁阀通过切削加工等在阀主体a形成阀室a1和柱塞室a2，与阀主体a一体成形从该柱塞室a2向电磁驱动部b侧延伸的圆筒状的柱塞管a3。在柱塞管a3内插通有电磁驱动部b的柱塞b1，并且在柱塞管a3的端部固定有吸引子b2。并且，为了确保柱塞管a3内的气密性，对吸引子b2与柱塞管a3的端部进行了硬钎焊。另外，就阀主体a而言，在阀室a1与柱塞室a2之间形成有阀座a4以及阀口a5。在阀室a1内配置有作为“阀芯”的球阀c。In this solenoid valve, a valve chamber a1 and a plunger chamber a2 are formed in the valve body a by cutting, etc., and a cylindrical plunger tube extending from the plunger chamber a2 to the side of the electromagnetic drive part b is formed integrally with the valve body a. a3. 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 order to ensure airtightness in the plunger tube a3, the end portion of the attractor b2 and the plunger tube a3 is brazed. 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 "spool" is arranged in the valve chamber a1.
并且，球阀c与阀簧e一起配置在形成于暗栓d的圆筒状的导向件d1内，将暗栓d螺纹结合于阀室a1(阀主体a)的端部来对阀室a1进行密封。并且，为了确保阀室a1的气密性，对暗栓d与阀主体a的端部进行硬钎焊。阀口a5是连通阀室a1与柱塞室a2的构造，安装于柱塞b1的端部的销b3通过阀口a5内而与球阀c抵接。并且，在阀主体a安装有与阀室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，该一次侧接头f和二次侧接头g被硬钎焊于阀主体a。In addition, the ball valve c is disposed together with the valve spring e in the cylindrical guide d1 formed on the deadbolt d, and the deadbolt d is screwed to the end of the valve chamber a1 (valve main body a) to adjust the valve chamber a1. seal. In addition, in order to ensure the airtightness of the valve chamber a1, the end portion of the dead plug d and the valve main body a is brazed. The valve port a5 is configured to communicate the valve chamber a1 and the plunger chamber a2, and the pin b3 attached to the end of the plunger b1 passes through the valve port a5 and contacts 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, and the primary side joint f and the secondary side joint g are brazed to the valve body a. subject a.
即、构成为，从一次侧接头f进入阀室a1的流体通过阀口a5而朝向二次侧接头g，若向电磁驱动部b的电磁线圈b4通电则柱塞b1被抬起，球阀c被阀簧e推起而将阀座a4的阀口a5封闭。That is, the fluid entering the valve chamber a1 from the primary side joint f passes through the valve port a5 and flows toward the secondary side joint g. When the solenoid b4 of the electromagnetic drive part b is energized, the plunger b1 is lifted and the ball valve c is moved. The valve spring e is pushed up to close the valve port a5 of the valve seat a4.
现有技术文献prior art literature
专利文献patent documents
专利文献1：日本实公平8－5431号公报Patent Document 1: Japanese Publication No. 8-5431
专利文献2：日本特开昭54－96828号公报Patent Document 2: Japanese Patent Application Laid-Open No. 54-96828
发明内容Contents of the invention
发明所要解决的课题The problem to be solved by the invention
如上述那样，通电关闭型电磁阀是阀芯(球阀c)隔着阀口a5(阀座a4)而配置在与柱塞b1(电磁驱动部b)相反侧的构造。与此相对，以往的电磁阀中，从该构造可知，将球阀c与阀簧e一起装入暗栓d的导向件d1内，将该暗栓d从形成于阀主体a的阀室a1侧插入，并将该暗栓d固定于阀主体a。另一方面，柱塞b1从与阀主体a一体形成的柱塞管a3内插通于柱塞室a2内。因此，组装作业复杂。另外，阀室a1和柱塞室a2从阀主体a的彼此相反侧分别通过切削加工而形成，因此还存在部件的定心也困难之类的问题。As described above, the energized closing type electromagnetic valve has a structure in which the valve body (ball valve c) is arranged on the opposite side to the plunger b1 (electromagnetic drive part b) across the valve port a5 (valve seat a4). On the other hand, in the conventional solenoid valve, as can be seen from this structure, the ball valve c is installed in the guide d1 of the dead plug d together with the valve spring e, and the dead plug d is formed on the side of the valve chamber a1 of the valve main body a. Insert and fix the deadbolt d to the valve main body a. On the other hand, the plunger b1 is inserted into the plunger chamber a2 from the plunger tube a3 integrally formed with the valve body a. Therefore, the assembly work is complicated. In addition, since the valve chamber a1 and the plunger chamber a2 are respectively formed by cutting from opposite sides of the valve body a, there is also a problem that centering of components is difficult.
本发明的课题是，在阀芯隔着阀口而配置在与柱塞相反侧的通电关闭型电磁阀的制造方法中，使组装作业变得容易并且提高定心的精度。An object of the present invention is to facilitate assembly work and improve centering accuracy in a method of manufacturing an energized close type solenoid valve in which a valve body is arranged on the opposite side to a plunger across a valve port.
用于解决课题的方案Solution to the problem
方案1是一种通电关闭型电磁阀的制造方法，该通电关闭型电磁阀在阀主体具备：与一次侧接头连通的阀室；以及与二次侧接头和电磁驱动部的柱塞管连通的柱塞室，对连通上述阀室和上述柱塞室的阀口进行开闭的阀芯位于上述阀室侧，通过上述柱塞管内的柱塞的移动来使上述阀芯移动从而对上述阀口进行开闭，上述通电关闭型电磁阀的制造方法的特征在于，在上述阀主体的上述阀室与上述柱塞室之间，形成中心具有插通孔的圆环状的承接座部，将上述一次侧接头、上述二次侧接头以及上述柱塞管紧固于上述阀主体而构成主体组件，并且，通过将具有上述阀口的阀座部和阀导向部一体形成的阀架，在该阀架的上述阀导向部内保持上述阀芯而构成阀组件，从上述主体组件的上述柱塞管侧插通上述阀组件，从上述插通孔向上述阀室内插通上述阀导向部，使上述阀座部与上述承接座部抵接，通过该阀座部和该承接座部而将上述阀室与上述柱塞室之间密封，从而将上述阀组件固定于上述阀主体内。Scheme 1 is a method of manufacturing an energized-to-close solenoid valve. The energized-to-close solenoid valve has in the valve body: a valve chamber communicated with the primary side joint; and a valve chamber communicated with the secondary side joint and the plunger tube of the electromagnetic drive part The plunger chamber, the valve element for opening and closing the valve port communicating with the valve chamber and the plunger chamber is located on the side of the valve chamber, and the valve element is moved by the movement of the plunger in the plunger tube to open and close the valve port. For opening and closing, the manufacturing method of the above-mentioned energized closing type solenoid valve is characterized in that, between the above-mentioned valve chamber of the above-mentioned valve body and the above-mentioned plunger chamber, an annular receiving seat portion having a through hole in the center is formed, and the above-mentioned The primary side joint, the secondary side joint, and the plunger tube are fastened to the valve main body to constitute a main body assembly, and the valve frame is integrally formed with the valve seat portion having the valve port and the valve guide portion. The above-mentioned valve core is held in the above-mentioned valve guide part of the frame to form a valve assembly. The above-mentioned valve assembly is inserted from the side of the above-mentioned plunger tube of the above-mentioned main body assembly, and the above-mentioned valve guide is inserted into the above-mentioned valve chamber through the above-mentioned insertion hole, so that the above-mentioned valve The seat portion is in contact with the receiving seat portion, and the valve chamber and the plunger chamber are sealed by the valve seat portion and the receiving seat portion, thereby fixing the valve assembly in the valve main body.
方案2的通电关闭型电磁阀的制造方法根据方案1所述的通电关闭型电磁阀的制造方法，其特征在于，The manufacturing method of the energization-closing type electromagnetic valve of the scheme 2 According to the manufacturing method of the energization-closing type electromagnetic valve described in the scheme 1, it is characterized in that,
通过在直径比上述承接座部大的圆筒部内旋入上述阀座部，从而将上述阀组件固定于上述阀主体内。The valve assembly is fixed in the valve main body by screwing the valve seat portion into a cylindrical portion having a larger diameter than the receiving seat portion.
方案3的通电关闭型电磁阀的制造方法根据方案1所述的通电关闭型电磁阀的制造方法，其特征在于，The manufacturing method of the energization-closing electromagnetic valve of the scheme 3 According to the manufacturing method of the energization-closing electromagnetic valve described in the scheme 1, it is characterized in that,
通过在直径比上述插通孔大的嵌合孔内压入阀座部，并且对该嵌合孔的开口端部的边缘进行铆接，从而将上述阀组件固定于上述阀主体内。The valve assembly is fixed in the valve main body by press-fitting the valve seat into a fitting hole having a larger diameter than the insertion hole, and caulking the edge of the opening end of the fitting hole.
方案4的通电关闭型电磁阀的制造方法根据方案1～3任一项中所述的通电关闭型电磁阀的制造方法，其特征在于，The manufacturing method of the energization-closing type electromagnetic valve of the scheme 4 is according to the manufacturing method of the energization-closing type electromagnetic valve described in any one of the schemes 1-3, it is characterized in that,
上述柱塞管是不锈钢制，在将上述阀组件固定于上述阀主体内之后，在上述柱塞管内插通上述柱塞，并且，通过焊接将上述电磁驱动部的吸引子紧固于该柱塞管。The plunger tube is made of stainless steel, and after the valve assembly is fixed in the valve body, the plunger is inserted into the plunger tube, and the attractor of the electromagnetic drive part is fastened to the plunger by welding. Tube.
方案5是一种通电关闭型电磁阀，在阀主体具备：与一次侧接头连通的阀室；以及与二次侧接头和电磁驱动部的柱塞管连通的柱塞室，对连通上述阀室和上述柱塞室的阀口进行开闭的阀芯位于上述阀室侧，通过上述柱塞管内的柱塞的移动来使上述阀芯移动从而对上述阀口进行开闭，上述通电关闭型电磁阀的特征在于，上述阀主体在上述阀室与上述柱塞室之间具有圆环状的承接座部，该承接座部在中心具有插通孔，具备阀组件，该阀组件通过由具有上述阀口的阀座部和阀导向部成为一体的阀架，而在该阀架的上述阀导向部内保持上述阀芯，上述阀组件的上述阀导向部插通于上述插通孔和上述阀室内，并且该阀组件的上述阀座部在上述柱塞室侧与上述承接座部抵接，从而将上述阀室与上述柱塞室之间密封。Scheme 5 is an energized and closed electromagnetic valve. The main body of the valve is equipped with: a valve chamber communicated with the primary side joint; The valve core that opens and closes the valve port of the plunger chamber is located on the side of the valve chamber, and the valve core is moved by the movement of the plunger in the plunger tube to open and close the valve port. The valve is characterized in that the valve main body has an annular receiving seat portion between the valve chamber and the plunger chamber, the receiving seat portion has a through hole in the center, and has a valve assembly. The valve seat part of the valve port and the valve guide part are integrated into a valve frame, and the valve core is held in the valve guide part of the valve frame, and the valve guide part of the valve assembly is inserted into the insertion hole and the valve chamber , and the valve seat portion of the valve assembly abuts against the receiving seat portion on the side of the plunger chamber to seal between the valve chamber and the plunger chamber.
发明的效果如下。The effects of the invention are as follows.
根据方案1的通电关闭型电磁阀的制造方法，利用不同部件构成阀主体和阀座部，相对于主体组件从相同一侧组装构成阀座部以及阀芯的阀组件和柱塞，从而组装作业变得容易。另外，将阀座部、阀导向部以及阀芯作为阀组件而预先组装，并将其组装于主体组件，从而阀口与阀芯的定心也变得准确，阀芯稳定地落座，能够降低例如闭阀时的阀泄漏量。According to the manufacturing method of the energized closing type electromagnetic valve of plan 1, the valve main body and the valve seat part are composed of different parts, and the valve assembly and the plunger constituting the valve seat part and the valve core are assembled from the same side relative to the main body assembly, so that the assembly work made easy. In addition, by pre-assembling the valve seat, valve guide, and valve element as a valve assembly, and assembling them to the main body assembly, the centering of the valve port and the valve element becomes accurate, the valve element is seated stably, and the For example, valve leakage when the valve is closed.
根据方案2的通电关闭型电磁阀的制造方法，除了方案1的效果以外，仅通过将阀组件的阀座部旋入圆筒部内，便能够将阀组件固定于阀主体内，因此组装作业变得更加容易。According to the manufacturing method of the energized shut-off type solenoid valve of Claim 2, in addition to the effect of Claim 1, the valve assembly can be fixed in the valve body only by screwing the valve seat portion of the valve assembly into the cylindrical portion, so the assembly work becomes easier. more easily.
根据方案3的通电关闭型电磁阀的制造方法，除了方案1的效果以外，仅通过将阀组件的阀座部压入嵌合孔内，并对嵌合孔的开口端部的边缘进行铆接，便能够将阀组件固定于阀主体内，因此组装作业变得更加容易。According to the manufacturing method of the energized closing type electromagnetic valve according to the third aspect, in addition to the effect of the first aspect, only by pressing the valve seat part of the valve assembly into the fitting hole and riveting the edge of the opening end of the fitting hole, The valve assembly can be fixed in the valve main body, so the assembly work becomes easier.
根据方案4的通电关闭型电磁阀的制造方法，除了方案1～3任一项中所述的效果以外，柱塞管为不锈钢制，能够通过焊接将吸引子紧固于柱塞管，因此能够使硬钎焊处理、软钎焊处理为最小限度的次数。According to the manufacturing method of the energized closed solenoid valve of claim 4, in addition to the effects described in any one of the claims 1 to 3, the plunger tube is made of stainless steel, and the attractor can be fastened to the plunger tube by welding, so it can Minimize the number of brazing and soldering processes.
根据方案5的通电关闭型电磁阀，可得到与方案1相同的效果。According to the energization-closing type solenoid valve of the fifth aspect, the same effect as that of the first aspect can be obtained.
附图说明Description of drawings
图1是本发明的第一实施方式的通电关闭型电磁阀的开阀状态的纵剖视图。Fig. 1 is a longitudinal sectional view of an open state of an energized-to-close solenoid valve according to a first embodiment of the present invention.
图2是说明第一实施方式的通电关闭型电磁阀的制造工序的主要部分的图。FIG. 2 is a diagram illustrating a main part of a manufacturing process of the energized-to-close solenoid valve according to the first embodiment.
图3是本发明的第二实施方式的通电关闭型电磁阀的开阀状态的纵剖视图。3 is a longitudinal sectional view of an open state of an energization-to-close solenoid valve according to a second embodiment of the present invention.
图4是表示以往的通电关闭型电磁阀的一个例子的纵剖视图。FIG. 4 is a longitudinal sectional view showing an example of a conventional energized-to-close solenoid valve.
图中：In the picture:
1—阀主体，11—阀室，12—柱塞室，13—插通孔，14—柱塞管安装孔，15—配管连接孔，15a—一次侧接头，16—配管连接孔，16a—二次侧接头，17—承接座部，18—圆筒部，18a—内螺纹部，2—阀组件，21—架部，21A—阀座部，21Aa—锥形面，21Ab—外螺纹部，21B—阀导向部，21Ba—通路，21Bb—流路，22—球阀，23—盖部件，24—阀簧，25—阀口，3—电磁驱动部，31—柱塞管，32—柱塞，32a—销插入孔，321—销，33—吸引子，34—柱塞弹簧，10—通电关闭型电磁阀，20—主体组件，10′—通电关闭型电磁阀，15′—配管连接孔，15a′—一次侧接头，19—嵌合孔，19a—边缘，21A′—阀座部，21Aa′—锥形面。1—Valve body, 11—Valve chamber, 12—Plunger chamber, 13—Through hole, 14—Plunger tube installation hole, 15—Pipe connection hole, 15a—Primary side joint, 16—Pipe connection hole, 16a— Secondary side joint, 17—receiving seat, 18—cylindrical portion, 18a—internal thread portion, 2—valve assembly, 21—rack portion, 21A—valve seat portion, 21Aa—tapered surface, 21Ab—external thread portion , 21B—valve guide, 21Ba—passage, 21Bb—flow path, 22—ball valve, 23—cover part, 24—valve spring, 25—valve port, 3—electromagnetic drive unit, 31—plunger tube, 32—column Plug, 32a—pin insertion hole, 321—pin, 33—attractor, 34—plunger spring, 10—energized closed solenoid valve, 20—main assembly, 10′—energized closed solenoid valve, 15′—pipe connection Hole, 15a'—primary side joint, 19—fitting hole, 19a—edge, 21A'—seat portion, 21Aa'—tapered surface.
具体实施方式detailed description
以下，参照附图对本发明的通电关闭型电磁阀的制造方法以及通电关闭型电磁阀的实施方式进行说明。图1是第一实施方式的通电关闭型电磁阀的开阀状态的纵剖视图。此外，在以下的说明中，“上下”的概念与图1的附图中的上下对应。Hereinafter, embodiments of a method for manufacturing an energized-to-close solenoid valve and an energized-to-close solenoid valve according to the present invention will be described with reference to the drawings. 1 is a longitudinal sectional view of an open state of an energized-to-close solenoid valve according to a first embodiment. In addition, in the following description, the concept of "up and down" corresponds to up and down in the drawing of FIG. 1 .
该实施方式中的通电关闭型电磁阀10具有黄铜等金属制的阀主体1。在阀主体1，通过切削加工而形成有阀室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，通过形成插通孔13而在阀室11与柱塞室12之间形成圆环状的承接座部17。即、承接座部17在中心具有插通孔13。另外，在柱塞室12内，具有直径比承接座部17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、承接座部17以及圆筒部18以轴线L为中心同轴地形成。The energized shut-off solenoid valve 10 in this embodiment has a valve body 1 made of metal such as brass. In the valve body 1, a valve chamber 11, a plunger chamber 12, an insertion hole 13 communicating with the valve chamber 11 and the plunger chamber 12, a plunger tube mounting hole 14, a piping connection hole 15, and piping are formed by cutting. Connection hole 16. Furthermore, in the valve main body 1 , an annular receiving seat portion 17 is formed between the valve chamber 11 and the plunger chamber 12 by forming the insertion hole 13 . That is, the receiving 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 diameter larger than that of the receiving 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 receiving seat portion 17 and the cylindrical portion 18 are coaxially formed around the axis L.
在柱塞管安装孔14，安装有后述的电磁驱动部3的不锈钢制的圆筒状的柱塞管31。在配管连接孔15安装有供流体如箭头那样流入的一次侧接头15a，在配管连接孔16安装有供流体如箭头那样流出的二次侧接头16a。一次侧接头15a经由一次口15b而与阀室11连通，二次侧接头16a经由二次口16b而与柱塞室12连通。柱塞管31、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硬钎焊而紧固于阀主体1。A stainless steel cylindrical plunger tube 31 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 a 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 via the primary port 15b, and the secondary side joint 16a communicates with the plunger chamber 12 via the secondary port 16b. The plunger tube 31, the primary side joint 15a, and the secondary side joint 16a are fastened 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，容纳有阀组件2。阀组件2由金属制且大致圆筒状的架部21、金属制的球阀22、薄型圆柱状的盖部件23、以及阀簧24构成。架部21构成为，使在中心具有阀口25的阀座部21A、和具有与球阀22的外径匹配的内径的圆筒状的阀导向部21B一体形成。并且，球阀22经由阀簧24而嵌入阀导向部21B内，通过从阀导向部21B的端部嵌入盖部件23，并对该阀导向部21B的端部进行铆接，从而固定盖部件23。此外，盖部件23也可以如后文所述那样是棱柱部件等。Inside the valve chamber 11, the valve assembly 2 is accommodated. The valve assembly 2 is composed of a metal and substantially cylindrical frame portion 21 , a metal ball valve 22 , a thin cylindrical cover member 23 , and a valve spring 24 . The frame portion 21 is configured by integrally forming a valve seat portion 21A having a valve port 25 at the center and a cylindrical valve guide portion 21B having an inner diameter matching the outer diameter of the ball valve 22 . The ball valve 22 is fitted into the valve guide 21B via the valve spring 24, and the cover member 23 is fixed by fitting the cover member 23 from the end of the valve guide 21B and caulking the end of the valve guide 21B. In addition, the cover member 23 may be a prism member etc. as mentioned later.
由此，在阀组件2中，球阀22保持于架部21内，由阀导向部21B导向，以使其仅沿轴线L方向移动。在阀导向部21B的侧部，且在阀座部21A侧，形成有连通阀室11和阀口25的通路21Ba。另外，在阀导向部21B，形成有用于使积存于球阀22的下方的液体流到阀室11侧的流路21Bb。上述盖部件23是薄型圆柱状的形状，但同样的盖部件也可以是例如六棱柱、四棱柱等棱柱部件。该情况下，对阀导向部21B的端部进行铆接后，也能够利用棱柱的侧面的部分而与上述流路21Bb同样地使积存于球阀22的下方的液体流到阀室11侧。并且，也可以在圆柱状的部件的侧面设置用于使液体流到阀室11侧的纵槽。不言而喻，这些情况下，有无流路21Bb均可。Thus, in the valve assembly 2 , the ball valve 22 is held in the frame portion 21 and guided by the valve guide portion 21B so as to move only in the axis L direction. On the side of the valve guide portion 21B, on the valve seat portion 21A side, a passage 21Ba communicating with the valve chamber 11 and the valve port 25 is formed. In addition, in the valve guide portion 21B, a flow path 21Bb for allowing the liquid accumulated below the ball valve 22 to flow to the valve chamber 11 side is formed. The above-mentioned cover member 23 has a thin cylindrical shape, but a similar cover member may be a prism member such as a hexagonal prism or a square prism, for example. Even in this case, after caulking the end portion of the valve guide portion 21B, the liquid accumulated below the ball valve 22 can be made to flow to the valve chamber 11 side similarly to the above-mentioned flow path 21Bb by using the side portion of the prism. In addition, a vertical groove for allowing the liquid to flow to the valve chamber 11 side may be provided on the side surface of the columnar member. Needless to say, in these cases, the flow path 21Bb may be present or not.
阀座部21A具有随着从阀导向部21B离开而直径扩大那样的锥形面21Aa。并且，在阀主体1的圆筒部18的内周形成有内螺纹部18a，在阀座部21A的外周形成有与该内螺纹部18a螺纹结合的外螺纹部21Ab。由此，阀导向部21B插通于插通孔13内，阀座部21A的锥形面21Aa与承接座部17的内侧端部(插通孔13的开口端部)抵接，通过将外螺纹部21Ab螺纹结合于内螺纹部18a并旋入，从而固定于阀主体1。该阀座部21A的锥形面21Aa与承接座部17的内侧端部对阀室11与柱塞室12之间进行密封。也可以在承接座部17与锥形面21Aa之间配设密封部件。此外，在阀座部21A的端部形成有使旋入时的工具卡合的一字槽21Ac。The valve seat portion 21A has a tapered surface 21Aa whose diameter increases as it moves away from the valve guide portion 21B. Furthermore, an internal thread portion 18 a is formed on the inner periphery of the cylindrical portion 18 of the valve body 1 , and an external thread portion 21Ab screwed to the internal thread portion 18 a is formed on the outer periphery of the valve seat portion 21A. Thus, the valve guide portion 21B is inserted into the insertion hole 13, the tapered surface 21Aa of the valve seat portion 21A abuts against the inner end portion (the opening end portion of the insertion hole 13) of the seat portion 17, and the outer The threaded part 21Ab is screwed into the internal 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 seat receiving portion 17 seal between the valve chamber 11 and the plunger chamber 12 . A sealing member may be disposed between the receiving seat portion 17 and the tapered surface 21Aa. In addition, a slotted groove 21Ac for engaging a tool at the time of screwing is formed at an end portion of the valve seat portion 21A.
在电磁驱动部3，在柱塞管31内插通柱塞32，该柱塞32配设成能够在轴线L方向(上下方向)上滑动。另外，在柱塞管31的上端嵌合吸引子33，在柱塞32与吸引子33之间配设对柱塞32向离开吸引子33的方向施力的柱塞弹簧34。在柱塞管31的外周，经由线轴35配设有电磁线圈36，电磁线圈36和线轴35通过其外周的树脂35a而模制成。并且，线轴35以及树脂35a由外壳37和磁性导向件38覆盖，外壳37利用螺纹件N将上部螺纹固定于吸引子33。在外壳37的外侧引出有用于向电磁线圈36通电的引线39。柱塞32、吸引子33、外壳37以及磁性导向件38分别由磁性体构成。吸引子33通过焊接图中符号“P”表示的接合部的整周而紧固于不锈钢制的柱塞管31。由此，柱塞管31内被气密地密封。In the electromagnetic drive unit 3 , a plunger 32 is inserted into the plunger tube 31 , and the plunger 32 is disposed so as to be slidable in the direction of the axis L (vertical direction). In addition, an attractor 33 is fitted to the upper end of the plunger tube 31 , and a plunger spring 34 for biasing the plunger 32 away from the attractor 33 is disposed between the plunger 32 and the attractor 33 . On the outer periphery of the plunger tube 31, an electromagnetic coil 36 is arranged via a bobbin 35, and the electromagnetic coil 36 and the bobbin 35 are molded by a resin 35a on the outer periphery thereof. Furthermore, the bobbin 35 and the resin 35a are covered by the case 37 and the magnetic guide 38, and the upper part of the case 37 is screw-fixed to the attractor 33 by the screw N. Lead wires 39 for supplying electricity to the electromagnetic coil 36 are drawn out from the outside of the case 37 . The plunger 32, the attractor 33, the housing 37, and the magnetic guide 38 are each made of a magnetic body. The attractor 33 is fastened to the plunger tube 31 made of stainless steel by welding the entire periphery of the junction portion indicated by the symbol "P" in the figure. Thereby, the inside of the plunger tube 31 is hermetically sealed.
在柱塞32的阀组件2侧形成有销插入孔32a，在该销插入孔32a安装有销321(圆棒)。并且，销321插通于阀座部21A的阀口25内，该销321的端部与球阀22抵接。A pin insertion hole 32 a is formed on the valve unit 2 side of the plunger 32 , and a pin 321 (round bar) is attached to the pin insertion hole 32 a. Furthermore, the pin 321 is inserted into the valve port 25 of the valve seat portion 21A, and the end portion of the pin 321 is in contact with the ball valve 22 .
图1中，电磁驱动部3为非通电状态，柱塞32因柱塞弹簧34的作用力和柱塞32的自重而通过销321向下方按压球阀22。由此，球阀22从阀座部21A离开而阀口25成为开阀状态。若向电磁驱动部3的电磁线圈36通电，则柱塞32抵抗柱塞弹簧34的作用力被吸附到吸引子33侧，因阀簧24的作用力，球阀22与柱塞32以及销321一起上升而落座于阀座部21A，从而阀口25成为闭阀状态。In FIG. 1 , the electromagnetic drive part 3 is in a non-energized state, and the plunger 32 presses the ball valve 22 downward through the pin 321 due to the force of the plunger spring 34 and the weight of the plunger 32 . 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 36 of the electromagnetic driving part 3 is energized, the plunger 32 is attracted to the attractor 33 side against the force of the plunger spring 34, and the ball valve 22, together with the plunger 32 and the pin 321, is attracted by the force of the valve spring 24. It rises and sits on the valve seat part 21A, and the valve port 25 becomes a closed state.
图2是说明第一实施方式的通电关闭型电磁阀10的制造工序的主要部分的图，通过该制造工序实施本发明的制造方法。各部的尺寸如以下那样。如图2所示，阀主体1的插通孔13(承接座部17的内侧)的内径φA成为比阀组件2的阀导向部21B的外径φB稍大的直径。另外，阀座部21A的外径(外螺纹部21Ab的外径)φC成为比阀导向部21B的外径φB大的直径。另外，柱塞管31的内径φD比阀座部21A的外径φC稍大。FIG. 2 is a diagram illustrating main parts of a manufacturing process of the energized-to-close solenoid valve 10 according to the first embodiment, and the manufacturing method of the present invention is carried out through the manufacturing process. The dimensions of each part are as follows. As shown in FIG. 2 , the inner diameter φA of the insertion hole 13 (inside the receiving seat portion 17 ) of the valve main body 1 is slightly larger than the outer diameter φB of the valve guide portion 21B of the valve assembly 2 . In addition, the outer diameter φC of the valve seat portion 21A (the outer diameter of the external thread portion 21Ab) is larger than the outer diameter φB of the valve guide portion 21B. In addition, the inner diameter φD of the plunger tube 31 is slightly larger than the outer diameter φC of the valve seat portion 21A.
首先，在阀主体1安装柱塞管31、一次侧接头15a以及二次侧接头16a，将该柱塞管31、一次侧接头15a以及二次侧接头16a如上述那样通过硬钎焊紧固于阀主体1，从而形成主体组件20。另一方面，在其他工序中，组装阀组件2。即、在架部21的阀导向部21B内嵌入球阀22和阀簧24，在阀导向部21B的端部嵌入盖部件23，对阀导向部21B的端部进行铆接来固定盖部件23。由此，组装成阀组件2。First, the plunger tube 31, the primary side joint 15a, and the secondary side joint 16a are attached to the valve main body 1, and the plunger tube 31, the primary side joint 15a, and the secondary side joint 16a are fastened to the valve by brazing as described above. The valve body 1 , thereby forming a body assembly 20 . On the other hand, in another process, the valve assembly 2 is assembled. That is, the ball valve 22 and the valve spring 24 are fitted into the valve guide portion 21B of the frame portion 21, the cover member 23 is fitted into the end of the valve guide portion 21B, and the cover member 23 is fixed by caulking the end of the valve guide portion 21B. Thus, the valve assembly 2 is assembled.
接着，从主体组件20的柱塞管31插入阀组件2，在插通孔13内插通阀导向部21B，将阀座部21A的外螺纹部21Ab旋入圆筒部18的内螺纹部18a，使阀座部21A的锥形面21Aa与承接座部17的内侧端部抵接。由此，阀组件2固定于阀室11以及柱塞室12内。这样，通过使锥形面21Aa紧贴承接座部17的端部，从而阀室11与柱塞室12之间被密封。Next, insert the valve assembly 2 from the plunger tube 31 of the main body assembly 20, insert the valve guide portion 21B into the insertion hole 13, and screw the external thread portion 21Ab of the valve seat portion 21A into the internal thread portion 18a of the cylindrical portion 18. , the tapered surface 21Aa of the valve seat portion 21A comes into contact with the inner end portion of the receiving seat portion 17 . Thus, the valve assembly 2 is fixed in the valve chamber 11 and the plunger chamber 12 . In this way, the valve chamber 11 and the plunger chamber 12 are sealed by bringing the tapered surface 21Aa into close contact with the end portion of the receiving seat portion 17 .
接着，将固定有销321的柱塞32插入柱塞管31内，将销321插通于阀座部21A的阀口25内。并且，在配设柱塞弹簧34后，将吸引子33嵌合于柱塞管31的上端，如上所述，通过焊接将吸引子33紧固于柱塞管31。另外，电磁驱动部3相对于利用树脂35a对线轴35和电磁线圈36进行模制而成的线圈部件，以嵌入方式组装磁性导向件38和外壳37。并且，将磁性导向件38和线轴35的中空部嵌入于柱塞管31，在外壳37的上部利用螺纹件N而螺纹固定于吸引子33。Next, the plunger 32 to which the pin 321 is fixed is inserted into the plunger tube 31 , and the pin 321 is inserted into the valve port 25 of the valve seat portion 21A. Then, after the plunger spring 34 is arranged, the attractor 33 is fitted to the upper end of the plunger tube 31 , and the attractor 33 is fastened to the plunger tube 31 by welding as described above. In addition, the electromagnetic drive unit 3 is fitted with a magnetic guide 38 and a housing 37 with respect to a coil component formed by molding the bobbin 35 and the electromagnetic coil 36 with resin 35 a. Then, the magnetic guide 38 and the hollow portion of the bobbin 35 are fitted into the plunger tube 31 , and the upper part of the housing 37 is screwed to the attractor 33 with a screw N.
如上所述，由于相对于主体组件20(阀主体1)从相同的一方侧组装阀组件2以及柱塞32，因此组装作业变得容易。另外，将阀座部21A、阀导向部21B、球阀22以及阀簧24作为阀组件2预先组装，并将它们组装于阀主体1，因此阀口25与球阀22的定心也变得准确，球阀22稳定地落座，能够降低例如闭阀时的阀泄漏量。此外，在加工阀主体1时，至少能够从同一侧切削柱塞安装孔14、柱塞室12以及插通孔13，因此加工变得容易，降低部件成本的同时，定心变得更加准确。As described above, since the valve assembly 2 and the plunger 32 are assembled from the same side with respect to the main body assembly 20 (valve main body 1), the assembly operation becomes easy. In addition, the valve seat portion 21A, the valve guide portion 21B, the ball valve 22, and the valve spring 24 are preassembled as the valve assembly 2 and assembled to the valve body 1, so the centering of the valve port 25 and the ball valve 22 also becomes accurate, The ball valve 22 is stably seated, and it is possible to reduce, for example, the amount of valve leakage when the valve is closed. In addition, since the plunger mounting hole 14, the plunger chamber 12, and the insertion hole 13 can be cut from at least the same side when machining the valve body 1, the machining becomes easier, the cost of parts is reduced, and the centering becomes more accurate.
在此，在上述以往的电磁阀中，在将暗栓d固定于阀主体a之前，成为一次侧接头f和二次侧接头g相对于阀主体a已经固定的状态。该一次侧接头f和二次侧接头g通过燃烧器硬钎焊或者炉中硬钎焊相对于阀主体a进行焊接。另外，暗栓d旋入后，通过硬钎焊等相对于阀主体a气密地固定。并且，柱塞管a3是与阀主体a一体的例如黄铜制，吸引子b2也通过硬钎焊等相对于该柱塞管a3气密地固定。Here, in the conventional solenoid valve described above, before the dead plug d is fixed to the valve body a, the primary side joint f and the secondary side joint g are already fixed to the valve body a. The primary side joint f and the secondary side joint g are welded to the valve main body a by burner brazing or furnace brazing. In addition, after the dowel d is screwed in, it is airtightly fixed to the valve main body a by brazing or the like. In addition, the plunger tube a3 is made of, for example, brass integrally with the valve main body a, and the attractor b2 is also airtightly fixed to the plunger tube a3 by brazing or the like.
即、在以往的电磁阀中，进行三次硬钎焊处理。若进行该硬钎焊处理，则为了去掉焊剂或烧痕，需要进行酸洗等清洗工序。根据保护环境、防止公害这样的观点，不推荐进行酸洗。另外，由于每次进行硬钎焊处理均暴露于高温，因此存在产生尺寸的应变或者材料的脆化之类的问题。因此，要求尽量减少这样的硬钎焊处理的次数。That is, in the conventional solenoid valve, the brazing process was performed three times. When this brazing process is performed, a cleaning step such as pickling is required to remove flux and burn marks. Pickling is not recommended from the viewpoint of protecting the environment and preventing pollution. In addition, since the brazing process is exposed to high temperature every time, there are problems such as generation of dimensional strain and embrittlement of materials. Therefore, it is required to reduce the frequency of such brazing processes as much as possible.
与此相对，在本实施方式中，通过一次硬钎焊处理就能够将柱塞管31、一次侧接头15a以及二次侧接头16a紧固于阀主体1。另外，柱塞管31是不锈钢制，能够通过焊接紧固吸引子33并进行密封，从而此处不需要实施硬钎焊处理。因此，能够使硬钎焊处理为最小限度的次数。On the other hand, in the present embodiment, the plunger tube 31 , the primary side joint 15 a and the secondary side joint 16 a can be fastened to the valve main body 1 by a single brazing process. In addition, the plunger tube 31 is made of stainless steel, and the attractor 33 can be fastened and sealed by welding, so there is no need to perform a brazing process here. Therefore, the number of brazing processes can be minimized.
图3是第二实施方式的通电关闭型电磁阀的开阀状态的纵剖视图。在该第二实施方式中，与第一实施方式的较大的不同在于，一次侧接头15a的位置、和阀组件2与阀主体1的固定构造。在该第二实施方式中，对于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以相同的构造起到相同的作用效果，适当省略重复的说明。3 is a longitudinal sectional view of an open state of an energized-to-close solenoid valve according to a second embodiment. In this second embodiment, a major difference from the first embodiment lies in the position of the primary side joint 15 a and the fixing structure of the valve assembly 2 and the valve main body 1 . In this second embodiment, the same reference numerals are attached to the same elements and corresponding elements as those in the first embodiment. Elements marked with the same symbols have the same function and effect with the same structure, and repeated explanations are appropriately omitted.
在第二实施方式的通电关闭型电磁阀10′中，在阀主体1的侧部形成有配管连接孔15′，在该侧部的配管连接孔15′安装有一次侧接头15a′。并且，在阀室11的侧面形成有一次口15b′，一次侧接头15a′经由一次口15b′而与阀室11连通。由此，流体从横向流入该通电关闭型电磁阀10′并沿横向流出。In the energized shut-off solenoid valve 10' of the second embodiment, a pipe connection hole 15' is formed on the side of the valve body 1, and a primary-side joint 15a' is attached to the pipe connection hole 15' on the side. In addition, a primary port 15b' is formed on a side surface of the valve chamber 11, and the primary side joint 15a' communicates with the valve chamber 11 through the primary port 15b'. As a result, the fluid flows into the energized-to-close solenoid valve 10' from the lateral direction and flows out from the lateral direction.
该第二实施方式的阀组件2的阀座部21A′的外径比第一实施方式的阀座部21A的外径小，在阀主体1形成有从承接座部17向柱塞室12侧延伸的嵌合孔19。嵌合孔19的内径比插通孔13的内径大，是供阀座部21A′嵌合的大小。并且，通过在嵌合孔19压入阀座部21A′并将嵌合孔19的开口端部的边缘19a向内侧(阀座部21A′侧)铆接，从而阀座部21A′固定于阀主体1。在该第二实施方式中，阀导向部21B也插通于插通孔13内，而阀座部21A′的锥形面21Aa′与承接座部17的内侧端部抵接，从而将阀室11与柱塞室12之间密封。此外，在该第二实施方式中，盖部件23也与第一实施方式相同，也可以是棱柱部件、或者设置纵槽。The outer diameter of the valve seat portion 21A′ of the valve assembly 2 of the second embodiment is smaller than that of the valve seat portion 21A of the first embodiment. Extended fitting hole 19 . The inner diameter of the fitting hole 19 is larger than the inner diameter of the insertion hole 13, and is a size for fitting the valve seat portion 21A'. Then, the valve seat portion 21A′ is fixed to the valve body by press-fitting the valve seat portion 21A′ into the fitting hole 19 and caulking the edge 19a of the opening end portion of the fitting hole 19 inwardly (the valve seat portion 21A′ side). 1. In this second embodiment, the valve guide portion 21B is also inserted into the insertion hole 13, and the tapered surface 21Aa' of the valve seat portion 21A' abuts against the inner end portion of the seat portion 17 to seal the valve chamber. 11 and the plunger chamber 12 are sealed. In addition, also in this second embodiment, the cover member 23 may be a prismatic member or be provided with vertical grooves as in the first embodiment.
该第二实施方式的通电关闭型电磁阀10′的制造工序如下。即、代替第一实施方式的图2所示的制造工序中、将阀组件2旋入圆筒部18的工序，而设置将阀组件2的阀座部21A′压入嵌合孔19，并铆接边缘19a的工序。其他工序与第一实施方式相同。The manufacturing process of the energized closing type solenoid valve 10' of this second embodiment is as follows. That is, instead of the process of screwing the valve assembly 2 into the cylindrical portion 18 in the manufacturing process shown in FIG. The process of riveting the edge 19a. Other steps are the same as those of the first embodiment.
在以上的实施方式中，对阀芯为球阀的例子进行了说明，但如果阀芯相对于阀座部而配置于阀室侧，则该阀芯也可以是其他形状。例如，也可以是圆柱状且在端部具有锥形面的针阀等。In the above embodiments, an example in which the valve body is a ball valve has been described, but if the valve body is disposed on the valve chamber side with respect to the valve seat portion, the valve body may have other shapes. For example, a needle valve having a cylindrical shape and a tapered surface at the end may be used.
另外，在实施方式中，由于在阀组件内具备阀簧，因此在低差压下也能够可靠地保持闭阀状态，并且能够防止压力变化引起的振动等。但是，在通电关闭型电磁阀中，阀芯也能够利用从一次侧流入的流体的压力使阀口处于闭阀状态，这种情况下，也可以没有阀簧。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 under low differential pressure, and vibration or the like due to pressure changes can be prevented. However, in the energized closing type solenoid valve, the valve element can also close the valve port by 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，参照附图对本发明的实施方式进行了详细叙述，但具体的结构并不限于这些实施方式，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。The embodiments of the present invention have been described in detail above with reference to the drawings, but the specific configurations are not limited to these embodiments, and changes in design within the scope of the present invention are also included in the present invention.
| Application Number | Priority Date | Filing Date | Title |
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| JP2015-206291 | 2015-10-20 | ||
| JP2015206291AJP6308685B2 (en) | 2015-10-20 | 2015-10-20 | Energized closed solenoid valve manufacturing method and energized closed solenoid valve |
| Publication Number | Publication Date |
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| CN106594354Atrue CN106594354A (en) | 2017-04-26 |
| CN106594354B CN106594354B (en) | 2019-02-01 |
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| CN201610884649.3AActiveCN106594354B (en) | 2015-10-20 | 2016-10-10 | The manufacturing method and energization closed type electromagnetic valve of energization closed type electromagnetic valve |
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| CN (1) | CN106594354B (en) |
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