CN114096772B - 流路切换阀 - Google Patents

流路切换阀 Download PDF

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Publication number
CN114096772B
CN114096772B CN202080041132.2A CN202080041132A CN114096772B CN 114096772 B CN114096772 B CN 114096772B CN 202080041132 A CN202080041132 A CN 202080041132A CN 114096772 B CN114096772 B CN 114096772B
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flow path
wall portion
path switching
peripheral wall
accumulation space
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CN114096772A (zh
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近藤大介
望月健一
原田贵雄
松本贵佑树
白川尚圣
高桥恒吏
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Fujikoki Corp
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Fujikoki Corp
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F16K11/087Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
    • F16K11/0873Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug the plug being only rotatable around one spindle
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1412Infrared [IR] radiation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/782Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/782Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined
    • B29C65/7823Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint
    • B29C65/7829Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint said distance pieces being integral with at least one of the parts to be joined
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114Single butt joints
    • B29C66/1142Single butt to butt joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1226Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least one bevelled joint-segment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/302Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/32Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322Providing cavities in the joined article to collect the burr
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/97Checking completion of joining or correct joining by using indications on at least one of the joined parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/10Welded housings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/748Machines or parts thereof not otherwise provided for
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  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
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  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Valve Housings (AREA)
  • Multiple-Way Valves (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

本发明提供一种能够有效地抑制因焊接产生的毛刺的影响的流路切换阀。流路切换阀(1)在阀主体(10)与下壳体(43)之间设置有将所述阀主体的周壁部(15)的内周面与所述下壳体的筒状部(46)的外周面遍及整周地接合的环状的接合部(90)。另外,所述流路切换阀在所述阀主体与所述下壳体之间设置有配置为在相互之间隔着所述接合部的环状的第一毛刺积存空间(91)和第二毛刺积存空间(92)。

Description

流路切换阀
技术领域
本发明涉及一种流路切换阀,尤其涉及一种通过焊接使阀主体与壳体接合的流路切换阀。
背景技术
专利文献1中公开了现有的流路切换阀的一例。该流路切换阀具备:阀壳体、配置于该阀壳体的上部的齿轮壳体以及配置于阀壳体的阀室内的球状的阀芯。
现有技术文献
专利文献
专利文献1:日本特开2010-223418号公报
在这样的流路切换阀中,阀壳体与齿轮壳体通过焊接而接合。当阀壳体与齿轮壳体被焊接时,接合部的内侧和外侧可能因焊接而产生毛刺。从而会有在接合部的内侧产生的毛刺进入阀壳体内、或在接合部的外侧产生的毛刺从阀壳体和齿轮壳体伸出而损害外观的担忧。
发明内容
因此,本发明的目的在于,提供一种能够有效地抑制因焊接而产生的毛刺的影响的流路切换阀。
用于解决技术问题的技术手段
为了达成上述目的,本发明的一个方式的流路切换阀具有:阀主体;阀芯,该阀芯收容于所述阀主体;以及壳体,该壳体与所述阀主体接合,并收容驱动所述阀芯的驱动机构,其中,在所述阀主体与所述壳体之间设置有环状的接合部以及环状的第一毛刺积存空间和环状的第二毛刺积存空间,该第一毛刺积存空间和第二毛刺积存空间配置为在相互之间隔着所述接合部。
在本发明中,优选的是,所述阀主体具有周壁部,所述壳体具有筒状部,该筒状部配置于所述周壁部的内侧,在所述周壁部的内侧嵌合有所述筒状部的顶端。
在本发明中,优选的是,所述第一毛刺积存空间是配置于所述周壁部与所述筒状部之间的封闭的空间。
在本发明中,优选的是,所述第二毛刺积存空间通过所述周壁部与所述壳体的间隙而与外部相通。
在本发明中,优选的是,所述接合部是所述周壁部的内周面与所述筒状部的外周面遍及整周接合的部分。
在本发明中,优选的是,所述第一毛刺积存空间靠近所述筒状部的顶端配置,所述第二毛刺积存空间靠近所述周壁部的顶端配置。
在本发明中,优选的是,所述第二毛刺积存空间具有靠近所述接合部的一端部和位于所述一端部的相反侧的另一端部,所述另一端部由设置于所述壳体的环状的槽构成。
在本发明中,优选的是,所述第二毛刺积存空间形成为所述另一端部与所述一端部相比向外侧突出。
发明的效果
根据本发明,在阀主体与壳体之间设置有环状的接合部和环状的第一毛刺积存空间及环状的第二毛刺积存空间,该第一毛刺积存空间及第二毛刺积存空间配置为在相互之间隔着接合部。通过像这样设置,通过焊接将阀主体与壳体接合时所产生的毛刺被留在配置为在之间隔着该接合部的两个环状的毛刺积存空间。由此,能够抑制毛刺进入阀主体的内侧,或向阀主体外侧伸出。因此,能够有效地抑制因焊接产生的毛刺的影响。
附图说明
图1是本发明的一实施方式的流路切换阀的主视图。
图2是包含图1的流路切换阀的一部分剖面的立体图。
图3是沿着图2的A-A线的剖视图。
图4是图1的流路切换阀的纵剖视图。
图5是放大了图4的纵剖视图的一部分的剖视图。
图6是本发明的第二实施方式的流路切换阀的纵剖视图。
图7是放大了图6的纵剖视图的一部分的剖视图。
具体实施方式
(第一实施方式)
以下,参照图1~图5,对本发明的第一实施方式的流路切换阀进行说明。
图1是本发明的一实施方式的流路切换阀的主视图。图2是包含图1的流路切换阀的一部分剖面的立体图。图3是沿着图2所示的A-A线的剖视图。图4是图1的流路切换阀的纵剖视图(沿着图2的轴线L的剖视图)。图5是放大了图4的纵剖视图中的一点划线的框内的剖视图。
在以下的说明中,“上下左右”用于在各图中表示各部件的相对的位置关系,并不表示绝对的位置关系。在各图中,将X轴方向作为左右方向,将Y轴方向作为跟前-深处方向(正面-背面方向),将Z轴方向作为上下方向。X轴、Y轴、Z轴彼此正交。在后述的第二实施方式也是相同地。
如图1~图4所示,本实施方式的流路切换阀1具有:阀主体10、作为阀芯的球形阀芯20、座部件30、30、密封部件31、31、驱动部40以及阀轴50。流路切换阀1还具有:作为旋转角输出轴的电位计轴60、作为基体的电位计基体70以及作为旋转角检测部的电位计80。此外,图2表示安装上壳体42前的流路切换阀1。图4表示安装上壳体42、电位计轴60、电位计基体70以及电位计80前的流路切换阀1。
阀主体10以例如聚苯硫醚(PPS)等合成树脂为材料,并形成为上端开口的大致立方体箱状。阀主体10具有大致四边筒状的周壁部15和底壁部10e,该周壁部15具有左侧壁部10a、正面壁部10b、右侧壁部10c以及背面壁部10d,该底壁部10e与周壁部15的下端设置为一体。
在阀主体10的左侧壁部10a设置有第一管状部11,该第一管状部11形成大致L字状的第一流路。在阀主体10的正面壁部10b设置有第二管状部12,该第二管状部12形成直线状的第二流路。在阀主体10的右侧壁部10c设置有第三管状部13,该第三管状部13与第一管状部11成为面对称且形成大致L字状的第三流路。第一管状部11的开口11a、第二管状部12的开口12a以及第三管状部13的开口13a朝向正面侧(图1的纸面跟前、图3的下方)。第一管状部11、第二管状部12以及第三管状部13与设置于阀主体10内的阀室14相通。在阀主体10可以设置两个或四个以上的流路作为与阀室14相通的流路。
球形阀芯20以例如金属、合成树脂等为材料,并形成为中空球状(球体状)。球形阀芯20被座部件30、30支承为能够旋转,并收容于阀室14。在球形阀芯20设置有:在图3所示的旋转位置中朝向左侧开口的第一开口21、朝向正面开口的第二开口22以及朝向右侧开口的第三开口23。在球形阀芯20的内部设置有俯视下大致T字状的切换流路25,该切换流路25将第一开口21、第二开口22以及第三开口23彼此连接。此外,球形阀芯20也可以是例如仅具有第一开口21和第二开口22,并设置有在图3所示的旋转位置中将第一开口21与第二开口22彼此连接的俯视下大致L字状的切换流路25。另外,在本实施方式中,流路切换阀1具有球形阀芯20作为阀芯,但也可以具有柱状的阀芯。
切换流路25构成为:根据球形阀芯20的旋转位置来切换第一管状部11(第一流路)、第二管状部12(第二流路)以及第三管状部13(第三流路)的连接。具体而言,在球形阀芯20位于图3所示的旋转位置时,切换流路25将第一管状部11、第二管状部12以及第三管状部13连接。在球形阀芯20位于从图3所示的旋转位置在俯视下顺时针旋转90度后的旋转位置时,切换流路25将第一管状部11与第二管状部12连接。在球形阀芯20位于从图3所示的旋转位置在俯视下逆时针旋转90度后的旋转位置时,切换流路25将第二管状部12与第三管状部13连接。
在球形阀芯20的上部设置有供阀轴50插入的阀轴插入孔24。阀轴插入孔24形成为球形阀芯20随着阀轴50的旋转而绕作为旋转轴线的轴线L旋转。具体而言,阀轴插入孔24形成为与阀轴50的棱柱部52中的与轴向正交的方向的截面形状(横截面形状)相同的形状。在本实施方式中,阀轴插入孔24形成为正六边形状。
座部件30、30以例如聚四氟乙烯(PTFE)等合成树脂为材料,并形成为圆环状。座部件30、30成对。座部件30、30收容于阀室14。座部件30、30在X轴方向上隔开间隔相对地配置。座部件30、30在阀室14内将球形阀芯20夹在之间并将球形阀芯20支承为能够旋转。
密封部件31、31是由例如橡胶材料等弹性材料构成的O型环。一方的密封部件31以成为压缩状态的方式夹在一方的座部件30与阀主体10的左侧壁部10a之间而配置。另一方的密封部件31以成为压缩状态的方式夹在另一方的座部件30与阀主体10的右侧壁部10c之间而配置。在本实施方式中,密封部件31安装于环状槽30a,该环状槽30a设置于座部件30。密封部件31的一部分从环状槽30a突出。密封部件31、31和座部件30、30一起将阀主体10与球形阀芯20之间密封。此外,流路切换阀1也可以省略密封部件31、31,而采用由橡胶材料等弹性材料构成的、兼具密封部件的功能的座部件30、30。
驱动部40具有:驱动机构,该驱动机构是将未图示的电机和包含齿轮41的减速器进行组合而成的;以及下壳体43和上壳体42,该下壳体43和上壳体42构成收容该驱动机构的全部或一部分的壳体。在本实施方式中,在下壳体43和上壳体42收容有由齿轮41等构成的减速器(除齿轮41之外省略图示)。下壳体43和上壳体42以例如聚苯硫醚(PPS)等合成树脂为材料而构成。上壳体42通过螺纹固定结构、卡扣结构等安装结构而安装于下壳体43。驱动部40经由阀轴50使球形阀芯20绕轴线L旋转。
下壳体43在底壁部44的中央一体地具有圆筒状的轴承部45。轴承部45供阀轴50插入。轴承部45将阀轴50支承为能够旋转。下壳体43具有从底壁部44向下方突出设置的大致四边筒状的筒状部46。筒状部46从上端侧沿着轴线L方向(Z轴方向)插入阀主体10的周壁部15。筒状部46配置于周壁部15的内侧。筒状部46的顶端46a与周壁部15的内侧嵌合。通过筒状部46的顶端46a与周壁部15的内侧嵌合,从而周壁部15与筒状部46相互定位。另外,筒状部46的顶端46a在阀主体10内与座部件30、30在轴线L方向上隔开微小的间隙配置。由此,筒状部46还作为限制座部件30、30在轴线L方向错位的止动件发挥功能。筒状部46与阀主体10的周壁部15组合。筒状部46与周壁部15通过超声波焊接而接合。由于下壳体43通过超声波焊接而与阀主体10接合,因此下壳体43优选由与阀主体10相同的合成树脂构成。
如图5所示,流路切换阀1在阀主体10与下壳体43之间设置有环状的接合部90。接合部90是周壁部15的内周面与筒状部46的外周面遍及整周接合的部分。另外,流路切换阀1在阀主体10与下壳体43之间设置有沿着周壁部15的周向的两个环状的毛刺积存空间(第一毛刺积存空间91、第二毛刺积存空间92)。第一毛刺积存空间91和第二毛刺积存空间92配置为相互之间隔着接合部90。
第一毛刺积存空间91配置于周壁部15与筒状部46之间,且与接合部90相比靠近筒状部46的顶端46a配置。第一毛刺积存空间91是封闭的空间。在本说明书中,封闭的空间表示,没有将阀主体10与下壳体43焊接时所产生的毛刺B能够穿过的间隙的空间,即,表示相对于毛刺B封闭的空间。通过像这样设置,当从接合部90产生的毛刺B在第一毛刺积存空间91内伸长时,由于没有毛刺B能够穿过的间隙,因此能够将毛刺B留在第一毛刺积存空间91。
在本实施方式中,第一毛刺积存空间91与周壁部15的内周面和筒状部46的外周面的间隙93相通,该间隙93的大小为30μm~100μm。由于毛刺B的厚度超过100μm,因此能够防止毛刺B穿过间隙93而进入阀室14。第一毛刺积存空间91能够可靠地将毛刺B留在其内侧。为了避免由超声波焊接将周壁部15与筒状部46中的接合部90以外的部分接合,将间隙93的大小确保为30μm以上。
第二毛刺积存空间92与接合部90相比靠近周壁部15的顶端15a配置。第二毛刺积存空间92通过周壁部15的顶端15a与下壳体43的间隙94而与外部相通。通过测定间隙94的Z轴方向的尺寸,能够知道在接合工程中变化的阀主体10与下壳体43的距离,因此能够确认它们的接合状态。
第二毛刺积存空间92具有:靠近接合部90的一端部92a(在图5中,下方的端部)和处于一端部92a的相反侧的另一端部92b(在图5中,上方的端部)。另一端部92b由设置于下壳体43的环状的槽47构成。通过像这样设置,当从接合部90产生的毛刺B在第二毛刺积存空间92中从一端部92a朝向他端部92b伸长时,毛刺B沿着由槽47构成的另一端部92b的内表面伸长,从而毛刺B的顶端朝向一端部92a折回。由此,在第二毛刺积存空间92内,毛刺B以弯曲的方式伸长。第二毛刺积存空间92能够将毛刺B留在其内侧。在本实施方式中,槽47形成为剖面U字状,但除此之外,槽47也可以为剖面V字状等,优选是毛刺B的顶端朝向一端部92a折回的形状。
另外,第二毛刺积存空间92形成为另一端部92b与一端部92a相比向外侧(在图5中,是左侧,筒状部46的外周面所朝向的方向)突出。由此,抑制了毛刺B的顶端直接进入间隙94。第二毛刺积存空间92能够防止毛刺B穿过间隙94而向外部伸出。
阀轴50是合成树脂制的,并形成为整体直线状地延伸的柱形状。阀轴50具有圆柱部51和与圆柱部51的下端同轴地相连的棱柱部52。阀轴50以沿着轴线L的方式配置。
圆柱部51在其下端部设置有向径向外侧突出的环状的止动部53。止动部53形成为其外径比轴承部45的内径大。
另外,在圆柱部51的下端部,在与止动部53相比靠上方的位置遍及整周设置有槽。在该槽嵌入有以橡胶材等为材料并形成为环状的O型环54。圆柱部51插入轴承部45,并被轴承部45支承为能够旋转。圆柱部51的外径比轴承部45的内径稍小。圆柱部51插入轴承部45,O型环54将阀轴50与轴承部45的间隙密封。由此,防止了阀室14内的流体向外部泄漏。
在圆柱部51的上端部通过压入而安装有驱动部40的驱动机构所具有的齿轮41。另外,在圆柱部51的上端部设置有抑制齿轮41的空转的平面部51a。齿轮41也可以通过压入以外的方法安装于阀轴50。
棱柱部52形成为横截面形状为正六边形状的柱状。棱柱部52插入球形阀芯20的阀轴插入孔24。棱柱部52以沿着轴线L的方式安装于球形阀芯20。球形阀芯20的轴线L成为阀轴50的旋转轴。阀轴50随着齿轮41的旋转而绕轴线L旋转。由于阀轴插入孔24形成为与棱柱部52的横截面形状相同的正六边形状,阀轴插入孔24与棱柱部52相互嵌合。球形阀芯20随着阀轴50的旋转而绕轴线L旋转。棱柱部52形成为其外径比止动部53的外径小。
棱柱部52除了正六边柱状以外,也可以是例如三角形柱状、四边形柱状等多边形柱状、使圆柱的侧面的一部分为平面的截面D字状的柱状。在该情况下,阀轴插入孔24也形成为与棱柱部52的横截面形状相同的形状。
另外,在圆柱部51中的朝向上方的端面51b的中央设置有安装孔55。安装孔55具有沿着轴线L的大致圆柱状的内侧空间。在安装孔55压入有电位计轴60。
电位计轴60是例如不锈钢、黄铜等金属制或聚苯硫醚(PPS)等合成树脂制的。电位计轴60与阀轴50是不同的部件。电位计轴60被压入阀轴50的安装孔55。电位计轴60与阀轴50同轴固定。电位计轴60具有设置于上端部的D切割形状的嵌合轴部61。嵌合轴部61与电位计80的转子81嵌合。
电位计基体70是合成树脂制的,并一体地具有基体主体部71和仪表安装部72。基体主体部71形成为大致平板状,并通过螺丝78、78固定于从下壳体43的底壁部44向上方突出的凸台(未图示)。仪表安装部72形成为大致圆板状,并在中央安装有电位计80。
电位计80是用于检测旋转角的传感器。电位计80具有圆板状的转子81和仪表主体部82。仪表主体部82将转子81支承为能够旋转。仪表主体部82是输出与转子81的旋转角对应的信号的信号输出部。在转子81的中央设置有俯视D字状的嵌合孔。在嵌合孔嵌合有电位计轴60的嵌合轴部61。转子81随着嵌合轴部61的旋转而旋转。由此,电位计80检测电位计轴60的绕轴线L的旋转角。
在流路切换阀1中,驱动部40的电机的旋转通过齿轮41向阀轴50输出,从而阀轴50绕轴线L旋转。球形阀芯20随着该阀轴50的旋转而绕轴线L旋转,从而被定位至各旋转位置。由此,实现了对应于旋转位置的流路的连接。另外,电位计轴60和阀轴50一起绕轴线L旋转,从而从电位计80输出与电位计轴60的旋转角对应的信号。基于从电位计80输出的信号,能够监视球形阀芯20的旋转位置。
通过以上,本实施方式的流路切换阀1在阀主体10与下壳体43之间设置有环状的接合部90,该接合部90将阀主体10的周壁部15的内周面与下壳体43的筒状部46的外周面遍及整周地接合。另外,流路切换阀1在阀主体10与下壳体43之间设置有配置为将接合部90夹在彼此之间的环状的第一毛刺积存空间91和第二毛刺积存空间92。通过像这样设置,将周壁部15的内周面与筒状部46的外周面通过超声波焊接接合时所产生的毛刺B被留在配置为在之间隔着接合部90的第一毛刺积存空间91和第二毛刺积存空间92。由此,能够抑制毛刺B进入阀主体10的内侧、或向阀主体10的外侧伸出。因此,能够有效地抑制因焊接而产生的毛刺B的影响。
(第二实施方式)
以下,参照图6、图7,对本发明的第二实施方式的流路切换阀进行说明。本实施方式的流路切换阀在阀主体与壳体的接合使用红外线焊接这点是与第一实施方式的流路切换阀的结构上的主要的不同。
图6是本发明的第二实施方式的流路切换阀的纵剖视图。图7是放大了图6的纵剖视图中的一点划线的框内的剖视图。图6表示安装上壳体42、电位计轴60、电位计基体70以及电位计80前的流路切换阀2。
本实施方式的流路切换阀2具有结构与第一实施方式的流路切换阀1所具有的阀主体10和下壳体43不同的阀主体110和下壳体143。流路切换阀2除了阀主体110和下壳体143以外具有与流路切换阀1相同的结构。在流路切换阀2中,对与第一实施方式的流路切换阀1相同的结构标注相同的符号,并省略说明。
阀主体110以例如聚苯硫醚(PPS)等合成树脂为材料,并形成为上端开口的大致立方体箱状。阀主体110具有大致四边筒状的周壁部115和底壁部110e,该周壁部115具有左侧壁部110a、正面壁部(未图示)、右侧壁部110c以及背面壁部(未图示),该底壁部110e与周壁部115的下端设置为一体。在阀主体110的周壁部115,也与第一实施方式的流路切换阀1相同地设置有第一管状部11、第二管状部12以及第三管状部13。
在周壁部115的上端部从外侧朝向内侧依次设置有主体部外侧突部117、主体部槽部118、主体部内侧突部119以及主体部切口部120。主体部外侧突部117、主体部槽部118、主体部内侧突部119以及主体部切口部120形成为环状,并同心状地配置。
下壳体143具有从底壁部44向下方突出地设置的大致四边筒状的筒状部146。筒状部146从上端侧沿着轴线L方向(Z轴方向)插入阀主体110的周壁部115。筒状部146配置于周壁部115的内侧。筒状部146的顶端146a与周壁部115的内侧嵌合。通过使筒状部146的顶端146a与周壁部115的内侧嵌合,从而周壁部115与筒状部146相互定位。另外,筒状部146的顶端146a在阀主体110内与座部件30、30在轴线L方向上隔开微小的间隙配置。由此,筒状部146也作为限制座部件30、30在轴线L方向上错开的止动件发挥功能。
另外,在下壳体143的底壁部44从外侧朝向内侧依次设置有壳体外侧突部147、壳体槽部148、壳体内侧突部149以及壳体内侧槽部150。壳体外侧突部147、壳体槽部148、壳体内侧突部149以及壳体内侧槽部150形成为环状,并以包围筒状部146的方式同心状地配置。
下壳体143的筒状部146与阀主体110的周壁部115组合。主体部内侧突部119与壳体内侧突部149通过红外线焊接而接合。由于下壳体143通过红外线焊接与阀主体110接合,因此下壳体143优选由与阀主体110相同的合成树脂构成。另外,主体部外侧突部117与壳体外侧突部147以在轴线L方向上隔开间隙194相对的方式配置。
如图7所示,流路切换阀2在阀主体110与下壳体143之间设置有环状的接合部190。具体而言,接合部190是主体部内侧突部119与壳体内侧突部149通过红外线焊接而遍及整周接合的部分。另外,流路切换阀2在阀主体110与下壳体143之间设置有沿着周壁部115的周向的两个环状的毛刺积存空间(第一毛刺积存空间191、第二毛刺积存空间192)。第一毛刺积存空间191与第二毛刺积存空间192配置为在相互之间隔着接合部190。
第一毛刺积存空间191配置于周壁部115与筒状部146之间。第一毛刺积存空间191由被主体部切口部120和筒状部146的外周面划分出的空间和壳体内侧槽部150构成。第一毛刺积存空间191是封闭的空间。通过将第一毛刺积存空间191设为封闭的空间,在从接合部190产生的毛刺B在第一毛刺积存空间191内伸长时,由于没有毛刺B能够穿过的间隙,因此第一毛刺积存空间191能够将毛刺B留在其内侧。
第二毛刺积存空间192由主体部槽部118和壳体槽部148构成。第二毛刺积存空间192通过主体部外侧突部117与壳体外侧突部147的间隙194而与外部相通。通过测定间隙194的Z轴方向的尺寸,能够知道在接合工程中变化的阀主体110与下壳体143的距离,因此能够确认它们的接合状态。
间隙194与接合部190在轴线L方向(Z轴方向)上错开配置。通过该结构,即使毛刺B从接合部190向与轴线L方向正交的方向伸长,也不会冒到外部。
在本实施方式的流路切换阀2中,也能够起到与上述的第一实施方式的流路切换阀1相同的作用效果。
在上述的各实施方式中,对作为焊接方法采用了超声波焊接或红外线焊接的构成例进行了说明,但也可以采用除此之外的焊接方法。
上述对本发明的实施方式进行了说明,但本发明不限于这些例子。本领域技术人员对前述的实施方式适当地进行了结构要素的追加、删除、设计变更的实施方式、将实施方式的特征适当组合的实施方式,只要不违反本发明的主旨,就包含于本发明的范围。
符号说明
(第一实施方式)
1…流路切换阀、10…阀主体、10a…左侧壁部、10b…正面壁部、10c…右侧壁部、10d…背面壁部、10e…底壁部、11…第一管状部、12…第二管状部、13…第三管状部、11a、12a、13a…开口、14…阀室、15…周壁部、15a…周壁部的顶端、20…球形阀芯、21…第一开口、22…第二开口、23…第三开口、24…阀轴插入孔、25…切换流路、30…座部件、30a…环状槽、31…密封部件、40…驱动部、41…齿轮、43…下壳体、44…底壁部、45…轴承部、46…筒状部、46a…筒状部的顶端、47…环状的槽、50…阀轴、51…圆柱部、51a…平面部、51b…端面、52…棱柱部、53…止动部、54…O型环、55…安装孔、60…电位计轴、61…嵌合轴部、70…电位计基体、71…基体主体部、72…仪表安装部、78…螺丝、80…电位计、81…转子、82…仪表主体部、90…接合部、91…第一毛刺积存空间、92…第二毛刺积存空间、92a…一端部、92b…另一端部、93、94…间隙、B…毛刺
(第二实施方式)
2…流路切换阀、110…阀主体、110a…左侧壁部、110c…右侧壁部、110e…底壁部、115…周壁部、117…主体部外侧突部、118…主体部槽部、119…主体部内侧突部、120…主体部切口部、143…下壳体、146…筒状部、146a…顶端、147…壳体外侧突部、148…壳体槽部、149…壳体内侧突部、150…壳体内侧槽部、190…接合部、191…第一毛刺积存空间、192…第二毛刺积存空间、194…间隙

Claims (8)

1.一种流路切换阀,具有:阀主体;阀芯,该阀芯收容于所述阀主体;以及壳体,该壳体与所述阀主体接合,并收容驱动所述阀芯的驱动机构,该流路切换阀的特征在于,
在所述阀主体与所述壳体之间设置有环状的接合部以及环状的第一毛刺积存空间和环状的第二毛刺积存空间,该第一毛刺积存空间和第二毛刺积存空间配置为在相互之间隔着所述接合部,
所述阀主体具有周壁部和在所述周壁部的一端一体设置的底壁部,
所述壳体具有筒状部,该筒状部从所述周壁部的另一端插入而配置于所述周壁部的内侧,
在所述周壁部的内侧嵌合有所述筒状部的顶端,
所述阀主体收容有将所述阀芯支承为能够旋转的两个座部件,
所述筒状部的顶端与所述两个座部件在所述筒状部插入所述周壁部的方向上隔开微小的间隙配置。
2.根据权利要求1所述的流路切换阀,其特征在于,
所述第一毛刺积存空间是配置于所述周壁部与所述筒状部之间的封闭的空间。
3.根据权利要求1所述的流路切换阀,其特征在于,
所述第二毛刺积存空间通过所述周壁部与所述壳体的间隙而与外部相通。
4.根据权利要求2所述的流路切换阀,其特征在于,
所述第二毛刺积存空间通过所述周壁部与所述壳体的间隙而与外部相通。
5.根据权利要求1~4中任一项所述的流路切换阀,其特征在于,
所述接合部是所述周壁部的内周面与所述筒状部的外周面遍及整周接合的部分。
6.根据权利要求5所述的流路切换阀,其特征在于,
所述第一毛刺积存空间靠近所述筒状部的顶端配置,
所述第二毛刺积存空间靠近所述周壁部的顶端配置。
7.根据权利要求6所述的流路切换阀,其特征在于,
所述第二毛刺积存空间具有靠近所述接合部的一端部和位于所述一端部的相反侧的另一端部,所述另一端部由设置于所述壳体的环状的槽构成。
8.根据权利要求7所述的流路切换阀,其特征在于,
所述第二毛刺积存空间形成为所述另一端部与所述一端部相比向外侧突出。
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