CN104284546A - 密闭框体及密闭框体的制造方法 - Google Patents

密闭框体及密闭框体的制造方法 Download PDF

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CN104284546A
CN104284546A CN201410306446.7A CN201410306446A CN104284546A CN 104284546 A CN104284546 A CN 104284546A CN 201410306446 A CN201410306446 A CN 201410306446A CN 104284546 A CN104284546 A CN 104284546A
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burr
component
weld part
framework
welding
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保住昭宏
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Omron Corp
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Omron Corp
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/06—Hermetically-sealed casings
    • H05K5/066—Hermetically-sealed casings sealed by fusion of the joining parts without bringing material; sealed by brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means 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
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/782—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined
    • B29C65/7823—Positioning 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
    • B29C65/7829—Positioning 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap joint-segment
    • B29C66/12821—Stepped joint cross-sections comprising at least one overlap joint-segment comprising at least two overlap joint-segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1284—Stepped joint cross-sections comprising at least one butt joint-segment
    • B29C66/12841—Stepped joint cross-sections comprising at least one butt joint-segment comprising at least two butt joint-segments
    • B29C66/12842—Stepped joint cross-sections comprising at least one butt joint-segment comprising at least two butt joint-segments comprising at least three butt joint-segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1286—Stepped joint cross-sections comprising at least one bevelled joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular 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
    • B29C66/30223—Particular 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General 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
    • B29C66/51—Joining 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
    • B29C66/54—Joining 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General 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
    • B29C66/73—General 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
    • B29C66/739—General 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
    • B29C66/7392—General 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
    • B29C66/73921—General 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3481—Housings or casings incorporating or embedding electric or electronic elements

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Casings For Electric Apparatus (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

一种密闭框体及密闭框体的制造方法，使用于电气设备的密闭框体的强度提高。框体(2)至少具备第一框体部件(2a)及第二框体部件(2b)，通过超声波焊接将第一框体部件(2a)的焊接部(22a)、即具有相对于超声波振动方向倾斜的面的焊接部(22a)和第二框体部件(2b)焊接而形成，框体(2)还具备位于焊接部(22a)的下方，且位于第一框体部件(2a)和第二框体部件(2b)之间的毛刺贮留部(23)、即贮留因超声波焊接而产生的毛刺的毛刺贮留部(23)。

Description

密闭框体及密闭框体的制造方法
技术领域
本发明涉及保护电气设备等的密闭框体及密闭框体的制造方法。
背景技术
目前，为了确保保护电气设备等的框体的密闭性而采用了各种方法。例如，在专利文献1中记载有，密闭型小型开关的框体由外壳和基座构成，通过超声波焊接将外壳和基座接合。
专利文献1：(日本)特开2000－268663号公报(2000年9月29日公开)
近年来，为了谋求电气设备等的小型化、轻量化、成本削减等，保护电气设备等的框体使用薄壁的框体。另外，电动工具或车辆上搭载的电气设备等的框体需要提高框体的密闭性，改善防尘性及防水性，同时需要能承受施加于框体上的振动或冲击等。
但是，在专利文献1记载的接合方法中，由于外壳和基座的焊接面的方向在哪个部分都是相同的，因此由专利文献1记载的接合方法制造的框体会成为对于与焊接面平行的力较弱的构造。
发明内容
本发明是鉴于上述问题点而设立的，其目的在于，实现提高了强度的用于电气设备等的密闭框体及密闭框体的制造方法。
为了解决上述课题，本发明的密闭框体用于电气设备，其中，至少具备第一部件及第二部件，通过超声波焊接将所述第一部件的焊接部、即具有相对于超声波振动方向倾斜的面的焊接部和所述第二部件焊接而形成，还具备毛刺贮留部，其贮留因所述超声波焊接而产生的毛刺，该毛刺贮留部位于所述毛刺从所述焊接部流出的毛刺流出方向，为所述第一部件和所述第二部件之间的间隙。
在此，所述第一部件和所述第二部件的焊接面按照围绕所述密闭框体的内部的方式形成。另外，其焊接面相对于超声波振动方向倾斜。因此，焊接面的方向根据所述密闭框体的部位而不同。因此，所述密闭框体起到对来自所有方向的力均可对应的效果。
另外，根据上述构成，将在所述第一部件和所述第二部件之间形成的间隙作为毛刺贮留部。因此，和在所述第一部件或所述第二部件上形成毛刺贮留部的情况相比，能够简单地设计所述第一部件及所述第二部件的形状。
另外，作为所述毛刺贮留部的底面、即所述第一部件的面和与所述第二部件接触的所述第一部件的接触面、即规定所述第一部件和所述第二部件的位置关系的接触面也可以是同一平面。
根据上述构成，与在所述第一部件设置凹部而形成毛刺贮留部的情况相比，能够将所述第一部件的形状设定成凹凸更少的简单形状。因此，能够将所述第一部件的模具的形状设定为简单的形状，能够延长所述第一部件的模具的寿命。
另外，所述毛刺贮留部也可以位于比所述焊接部更靠所述密闭框体的外部方向的位置。
根据上述构成，由于所述毛刺贮留部位于比所述焊接部更靠所述密闭框体的外部方向的位置，故而能够防止毛刺漏到所述密闭框体的内部。
另外，所述第一部件还可以具备从所述焊接部向所述毛刺流出方向的相反方向延伸的凸部、即位于比所述焊接部更靠所述密闭框体的内部方向的位置的凸部。
根据上述构成，由于从所述焊接部向所述毛刺流出方向的相反方向延伸的所述凸部位于比所述焊接部更靠所述密闭框体的内部方向的位置，故而能够防止毛刺漏到所述密闭框体的内部。
为了解决上述课题，本发明的密闭框体用于电动工具，其中，所述密闭框体至少具备第一部件及第二部件，所述密闭框体通过超声波焊接将所述第一部件的焊接部、即具有相对于超声波振动方向倾斜的面的焊接部和所述第二部件焊接而形成。
在此，所述第一部件和所述第二部件的焊接面按照围绕所述密闭框体的内部的方式形成。另外，其焊接面相对于超声波振动方向倾斜。因此，焊接面的方向根据所述密闭框体的部位而不同。因此，所述密闭框体起到对来自所有方向的力均可对应的效果。
为了解决上述课题，本发明的密闭框体的制造方法，所述密闭框体用于电气设备，其中，具有通过超声波焊接将第一部件和第二部件焊接而形成所述密闭框体的步骤，所述第一部件具备：第一焊接部，其具有相对于超声波振动方向倾斜的面；第一毛刺贮留形成部，其相对于所述第一焊接部位于因超声波焊接而产生的毛刺流出的毛刺流出方向，在焊接后将其与所述第二部件之间的间隙作为毛刺贮留部而形成，所述第二部件具备：第二焊接部，其与所述第一焊接部焊接；第二毛刺贮留形成部，在焊接后将其与所述第一毛刺贮留形成部之间的间隙作为所述毛刺贮留部而形成。
根据本发明，起到提高用于电气设备的密闭框体的强度的效果。
附图说明
图1是表示本发明第一实施方式的图，是表示触发开关的构成的立体图；
图2是表示上述触发开关的构成的正面图；
图3是构成上述触发开关的框体的第一框体部件及第二框体部件的剖面图，是表示第一框体部件和第二框体部件分离开的状态的剖面图；
图4是构成所述触发开关的框体的第一框体部件及第二框体部件的剖面图，是表示焊接前的第一框体部件和第二框体部件嵌合的状态的剖面图；
图5是构成上述触发开关的框体的第一框体部件及第二框体部件的剖面图，是表示第一框体部件及第二框体部件焊接后的状态的剖面图；
图6是表示上述触发开关的框体的制造方法的流程图；
图7是表示本发明第二实施方式的图，是构成触发开关的框体的第一框体部件及第二框体部件的剖面图，是表示第一框体部件及第二框体部件焊接后的状态的剖面图。
标记说明
1：触发开关
2、2’：框体(密闭框体)
2a、2c：第一框体部件(第一部件)
2b、2d：第二框体部件(第二部件)
21：卡合部
21a：卡合部(凸部)
21b：卡合部
22、22’：焊接部
22a、22c：焊接部(第一焊接部)
22b、22d：焊接部(第二焊接部)
23、23’：毛刺贮留部
23a、23c：毛刺贮留形成部(第一毛刺贮留形成部)
23b、23d：毛刺贮留形成部(第二毛刺贮留形成部)
24：接触部
24a：接触部
24b：接触部
具体实施方式
以下，参照附图对本发明的实施方式进行详细地说明。在本说明书中，以电动工具的框体为例进行说明。更详细地，以控制向电动工具的电动机的供电的开关即触发开关的框体为例。但是，应用本发明的框体不限于此，能够应用于保护车载用的电气设备等任意的电气设备的框体。另外，不限于开关的框体，也可以应用于构成电动工具的其他部件的框体。还可以是电动工具整体的框体。
＜第一实施方式＞
(触发开关的构成)
图1是表示本实施方式的触发开关1的构成的立体图。图2是表示本实施方式的触发开关1的构成的正面图。触发开关1(开关组件)具备内装开关及与开关连接的配线基板的框体(密闭框体)2、端子组件3以及用于从框体2的外侧切换开关的接通/断开的操作部6(触发器)。框体2是两个框体部件即第一框体部件(第一部件：壳体)2a和第二框体部件(第二部件：罩)2b组合而构成的。
端子组件3具备外部端子4a、4b和按压部件5。外部端子4a、4b是例如与电动工具的电动机连接的引线所连接的端子，向框体2的外部突出。另外，外部端子4b相对于按压部件5处于与外部端子4a对称的位置。另外，外部端子4a、4b在框体2的内部与开关或配线基板等电气零件连接。
(第一框体部件及第二框体部件的构成)
接着，基于图3～图5对第一框体部件2a及第二框体部件2b的构成进行说明。图3～图5是图2所示的第一框体部件2a及第二框体部件2b的A－A线向视剖面图。图3表示第一框体部件2a和第二框体部件2b分离的状态，图4表示焊接前的第一框体部件2a和第二框体部件2b嵌合的状态(嵌合状态)，图5表示第一框体部件2a及第二框体部件2b的焊接后的状态(焊接状态)。
如图3及图4所示，第一框体部件2a具备卡合部(第一卡合部、凸部)21a、焊接部(第一焊接部)22a、毛刺贮留形成部(第一毛刺贮留形成部)23a及接触部(第一接触部)24a。另外，第二框体部件2b具备卡合部(第二卡合部)21b、焊接部(第二焊接部)22b、毛刺贮留形成部(第二毛刺贮留形成部)23b及接触部(第二接触部)24b。
另外，如图5所示，框体2具备卡合部21a和卡合部21b卡合的卡合部21、通过超声波焊接将焊接部22a及焊接部22b各自的一部分熔融且互相焊接而形成的焊接部22、由毛刺贮留形成部23a及毛刺贮留形成部23b形成的毛刺贮留部23、接触部24a及接触部24b相接触的接触部24。
卡合部21a及卡合部21b相互卡合。卡合部21a在Z轴的正方向为凸形状，卡合部21b为凹形状。另外，卡合部21a位于比焊接部22a更靠框体2的内部方向的位置，从焊接部22a向上方(毛刺流出方向(详情后述)的相反方向)延伸。由此，在第一框体部件2a及第二框体部件2b进行焊接时，能够防止毛刺漏出到框体2内部。另外，如图4及图5所示，在嵌合状态及焊接状态下，也可以是，卡合部21a及卡合部21b的互相相对的面(垂直面及水平面)不接触，卡合部21具有间隙(间隙)。
通过超声波焊接使焊接部22a及焊接部22b的一部分熔融而将焊接部22a及焊接部22b相互焊接。焊接部22a具有相对于超声波振动方向(Z轴方向)倾斜的面。换句话说，焊接部22a具有相对于接触部24a的基准面(详细后述)倾斜的面。优选焊接部22a的斜面相对于Z轴(或X轴)为30度～60度。焊接部22b为阶梯状的凸形状。另外，焊接部22b也可以具有与焊接部22a的斜面面接触的斜面。在嵌合状态下，焊接部22a和焊接部22b抵接，焊接部22a的斜面和焊接部22b的端部线接触。
由于焊接部22a具有斜面，故而与超声波振动方向(Z轴方向)垂直的方向(图示的例子中为X轴方向)的力与第一框体部件2a及第二框体部件2b的剪切方向不一致。因此，框体2相对于与超声波振动方向垂直的方向的力能够具有强度。另外，在本实施方式中，表示了框体2的一侧壁的截面构造，但也可以是框体2的所有侧壁具有图5所示的截面构造。在这种情况下，框体2通过在所有的侧壁具有图5所示的第一框体部件2a和第二框体部件2b的连接构造，即使在有的侧壁与剪切方向一致的力被施加在框体2，在另一侧壁，其力的方向也与剪断方向不一致。因此，框体2对相对于任意方向的力都能够具有强度。
毛刺贮留形成部23a及毛刺贮留形成部23b是在第一框体部件2a和第二框体部件2b焊接后，形成毛刺贮留部23的部位。毛刺贮留部23是在毛刺贮留形成部23a和毛刺贮留形成部23b之间形成的间隙。焊接后，毛刺贮留部23的整体或一部分被从焊接部22a及焊接部22b开始熔融而产生的毛刺埋住。毛刺贮留部23的容积优选比从焊接部22a及焊接部22b熔融而产生的毛刺的量大。毛刺贮留部23位于焊接部22的下方(Z轴的负方向)。由于超声波焊接而产生的毛刺向焊接部22的下方(重力方向)流出，因此，也可以说，相比焊接部22，毛刺贮留部23位于毛刺流出的毛刺流出方向。另外，毛刺贮留部23优选设于比焊接部22更靠框体2的外部方向(X轴的正方向)的位置。由此，能够防止因超声波焊接而产生的毛刺漏出到框体2的内部。即使产生了毛刺贮留部23的容量以上的毛刺，由于毛刺向框体的外部漏出，也不会污染框体2的内部，还能够容易地进行去掉毛刺的处理。
接触部24a具有与接触部24b进行接触的接触面。接触部24b为凸形状，其前端面与接触部24a面接触。接触部24a的接触面是在焊接后规定第一框体部件2a和第二框体部件2b的位置关系的基准面。即，接触部24a具有在焊接时规定第二框体部件2b的进入量的限制器的功能。接触部24a的接触面和作为毛刺贮留部23的底面的毛刺贮留形成部23a的面为同一平面。由此，与将毛刺贮留部23形成凹部形状的情况相比，能够将形成第一框体部件2a的模具的形状设定为凹凸少的简单形状。另外，为了形成毛刺贮留部23，使毛刺贮留形成部23a和接触部24a形成的面的X轴方向的宽度比接触部24b的前端面的X轴方向的宽度大。
另外，第一框体部件2a的卡合部21a、毛刺贮留形成部23a及接触部24a以及第二框体部件2b的卡合部21b、焊接部22b、毛刺贮留形成部23b及接触部24b分别由垂直面或水平面(YZ平面或XY平面)形成，但不限于此，也可以分别相对于垂直面或水平面具有角度。
(框体的制造方法)
接着，基于图6对框体2的制造方法进行说明。图6是表示本实施方式的框体2的制造方法的流程图。
如图6所示，首先，如图4所示，使第一框体部件2a和第二框体部件2b嵌合(S1)。在该嵌合状态下，对第二框体部件2b与超声波振动同时施加加压力，使第一框体部件2a的焊接部22a和第二框体部件2b的焊接部22b焊接(S2)。
焊接后在毛刺向框体2外部漏出的情况下，去掉毛刺进行整形。
＜第二实施方式＞
基于图7对本发明的另一实施方式进行说明，说明如下。图7是表示第二实施方式的框体、即将第一框体部件和第二框体部件焊接后的框体的截面构造的图。另外，关于在第一实施方式中所定义的用语，只要预先没有特别说明，在本实施方式中也依照其定义而使用。
在本实施方式中，使用因超声波焊接而产生的毛刺向焊接部的上方漏出的方法，对第一框体部件和第二框体部件2d进行焊接。因此，如图7所示，在本实施方式中，在框体2’的焊接部22’的上方形成有毛刺贮留部23’。另外，毛刺贮留部23’位于焊接部22’的外侧。
另外，在本实施方式中，第一框体部件2c的焊接部22c和第二框体部件2d的焊接部22d相对于超声波振动方向(Z轴方向)互相具有倾斜的面，且进行面接触。
毛刺贮留形成部23c的与毛刺贮留形成部23d相对的面为平面。毛刺贮留形成部23d为凹形状。在毛刺贮留形成部23c和毛刺贮留形成部23d之间形成有毛刺贮留部23’。
本发明不限于上述各实施方式，在权利要求所示的范围内可进行各种变更，将不同的实施方式中分别公开的技术手段适当组合而得到的实施方式也包括在本发明的技术性范围内。
工业上的应用
本发明能够用于电动工具或车载用的电气设备等电气设备的框体。

Claims (6)

1.一种密闭框体，其用于电气设备，其特征在于，
至少具备第一部件及第二部件，
通过超声波焊接将所述第一部件的焊接部、即具有相对于超声波振动方向倾斜的面的焊接部和所述第二部件焊接而形成，
还具备毛刺贮留部，其贮留因所述超声波焊接而产生的毛刺，该毛刺贮留部位于所述毛刺从所述焊接部流出的毛刺流出方向，为所述第一部件和所述第二部件之间的间隙。
2.如权利要求1所述的密闭框体，其特征在于，作为所述毛刺贮留部的底面的所述第一部件的面和与所述第二部件接触的所述第一部件的接触面、即规定所述第一部件和所述第二部件的位置关系的接触面为同一平面。
3.如权利要求1或2所述的密闭框体，其特征在于，所述毛刺贮留部位于比所述焊接部更靠所述密闭框体的外部方向的位置。
4.如权利要求1～3中任一项所述的密闭框体，其特征在于，所述第一部件还具备从所述焊接部向所述毛刺流出方向的相反方向延伸的凸部、即位于比所述焊接部更靠所述密闭框体的内部方向的位置的凸部。
5.一种密闭框体，其用于电动工具，其特征在于，
所述密闭框体至少具备第一部件及第二部件，
所述密闭框体通过超声波焊接将所述第一部件的焊接部、即具有相对于超声波振动方向倾斜的面的焊接部和所述第二部件焊接而形成。
6.一种密闭框体的制造方法，所述密闭框体用于电气设备，其特征在于，
具有通过超声波焊接将第一部件和第二部件焊接而形成所述密闭框体的步骤，
所述第一部件具备：第一焊接部，其具有相对于超声波振动方向倾斜的面；第一毛刺贮留形成部，其相对于所述第一焊接部位于因超声波焊接而产生的毛刺流出的毛刺流出方向，在焊接后将该第一毛刺贮留形成部与所述第二部件之间的间隙作为毛刺贮留部而形成，
所述第二部件具备：第二焊接部，其与所述第一焊接部焊接；第二毛刺贮留形成部，在焊接后将该第二毛刺贮留形成部与所述第一毛刺贮留形成部之间的间隙作为所述毛刺贮留部而形成。
CN201410306446.7A 2013-07-02 2014-06-30 密闭框体及密闭框体的制造方法 Pending CN104284546A (zh)

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