CN103959562B - 用于将直流电气部件接地的终端设备 - Google Patents

用于将直流电气部件接地的终端设备 Download PDF

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CN103959562B
CN103959562B CN201180075261.4A CN201180075261A CN103959562B CN 103959562 B CN103959562 B CN 103959562B CN 201180075261 A CN201180075261 A CN 201180075261A CN 103959562 B CN103959562 B CN 103959562B
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厄尔·A·利雷特三世
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/622Screw-ring or screw-casing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28Clamped connections, spring connections
    • H01R4/30Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/302Clamped connections, spring connections utilising a screw or nut clamping member having means for preventing loosening of screw or nut, e.g. vibration-proof connection
    • 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
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    • F16B39/00Locking of screws, bolts or nuts
    • F16B39/02Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12End pieces terminating in an eye, hook, or fork
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28Clamped connections, spring connections
    • H01R4/30Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/34Conductive members located under head of screw
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/56Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation one conductor screwing into another
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/64Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H01R4/185Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • Y10T29/49174Assembling terminal to elongated conductor

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Abstract

本发明涉及一种终端设备,用于使直流电气部件例如音频放大器接地,该终端设备包括设有第一开口和第二开口的金属接触板,所述第一开口的尺寸设置成接纳固定螺钉,所述第二开口的尺寸设置成接纳锁紧螺钉,以用于将所述终端设备附连至另一结构的金属构件,其中,所述第一开口相对于所述第二开口定位成使得在所述固定螺钉将金属接触板附连至接地表面之后,当所述锁紧螺钉也旋拧至所述接地表面中时,所述锁紧螺钉的头部将接触所述固定螺钉的头部并且在其上施加抗旋转力。

Description

用于将直流电气部件接地的终端设备
技术领域
本发明一般地涉及一种用于将直流(DC)供电的电气或电子部件电气地接地的终端设备,更具体地涉及一种用于将用在汽车或卡车的音频系统中的音频放大器电气地接地的终端设备。
背景技术
当安装无线电放大器或类似的电气或电子部件时,希望通过将它们电气地连接至另一结构的某些金属表面而将这些部件接地。在很多情况下,这是通过将从所述部件有效地延伸的接地线附连至附近的金属表面来实现的。
在安装具有放大器的汽车收音机的情况下,通常采用接地终端将放大器的接地线固定至汽车金属结构的某些部分,例如形成汽车行李箱的相对薄的壁。这通常是通过采用自攻丝螺钉(sheet metal screw)将接地终端固定至汽车底盘(例如行李箱底板或壁)而实现的。然而,当汽车发动机运转时,其在包括行李箱底板和壁的汽车底盘中产生振动,这可造成自攻丝螺钉移出行李箱底板或壁,从而造成在接地终端和行李箱底板或壁之间的接地连接的损失。已尝试设计一种终端设备来更好地防止终端设备与金属壁表面脱离连接。尽管这些设计中的一些减少或消除了这些问题中的一些问题,但是行业中仍然需要一种不但制造成本更低、而且还可由受到最低限度培训的人员容易地并且迅速地安装的设备。
发明内容
因此,本发明的一个目的是,提供一种用于连接来自用在汽车、卡车或类似车辆中的DC电气或电子部件的接地线的终端设备,其降低或消除了由于发动机振动使终端设备从汽车行李箱或其他区域中的金属表面脱开的情况。
本发明的另一个目的是,提供一种用于连接来自用在汽车、卡车或类似车辆中的DC电气或电子部件的接地线的终端设备,其制造成本较低。
本发明的再一个目的是,提供一种用于连接来自用在汽车、卡车或类似车辆中的DC电气或电子部件的接地线的终端设备,其可由受过最少培训的人员容易地并且迅速地安装。
从下文对本发明的描述中将会清楚看到本发明的其他目标和优点。
因此,在一个实施例中,本发明包括具有接地板部的终端设备,该接地板部设置有至少一个锁紧螺钉开口以及至少一个固定螺钉开口,其尺寸设定成分别接纳锁紧螺钉以及固定螺钉,并且相对彼此定位成使得当锁紧螺钉和固定螺钉已经插入锁紧螺钉开口和固定螺钉开口时,将接地板部固定至另一结构的金属表面,锁紧螺钉将接触固定螺钉并且抵靠固定螺钉施加向下的力。
在一个优选的实施例中,终端设备还设置有接地线接纳部,该接纳部具有通路,接地线可穿过该通路,由此,该接纳部此后可以被夹压(crimped),以便在容易由一个或多个固定螺钉附连的位置处将接地线固定在通路中。
在另一优选实施例中,锁紧螺钉构造成具有直径大于在锁紧螺钉开口和固定螺钉开口之间的距离的大约两倍的头部。在一个更优选的实施例中,所述金属表面为金属薄板并且所述锁紧螺钉为自攻丝螺钉。
在一个可选实施例中,涉及一种采用例如本文所述的终端设备将来自DC电气或电子部件的接地线固定至金属表面的方法,该工艺包括以下步骤:从接地线的端部部分去除接地线电绝缘层;将接地线延伸至接地线接纳部中;充分地夹压接地线接纳部以将接地线固定至接地线接纳部;通过将固定螺钉定位至金属表面上并且通过将穿过固定螺钉开口定位的固定螺钉旋拧至金属表面中,来固定接地板部;然后将锁紧螺钉定位成穿过锁紧螺钉开口并且将锁紧螺钉拧至金属壁中,直到锁紧螺钉在固定螺钉头部上施加期望的抗旋转力。在此实施例中,优选的是,锁紧螺钉构造成具有足够直径的头部,以允许锁紧螺钉头部接触固定螺钉头部并且在固定螺钉头部上施加期望的抗旋转力。更优选的是,锁紧螺钉头部的尺寸和形状设置成使得当施加期望的抗旋转力时,与固定螺钉头部接触的表面区域最大化。优选的是,锁紧螺钉头部的直径设定成使得其周向边缘在距固定螺钉头部的周向边缘一定距离处接触固定螺钉头部,所述距离等于固定螺钉头部的半径的至少四分之一,更优选地,距固定螺钉头部的周向边缘的距离等于固定螺钉头部的半径的至少二分之一。
为了可以理解下文对本发明的详细描述,上文相当宽泛地概述了本发明的特征和技术优点。将在下文中描述本发明的其他特征和优点,其形成本发明的权利要求的主题。本领域技术人员应当认识到,所公开的概念和具体实施例可被容易地用作修改或设计用于执行本发明的相同目的的其他结构的基础。本领域技术人员还应当意识到,这些等同的构造并不背离由所附权利要求阐述的本发明的精神和范围。通过结合附图考虑下文的描述,将会更好地理解被认为是本发明特有的新颖性特征——其涉及组织结构和操作方法两者——以及其他的目标和优点。然而,应该清楚地理解,所提供的每个附图仅仅是为了例示和说明的目的,并不意图作为限制本发明的限定。
附图说明
附图示出了本发明的优选实施例。然而应当理解的是,此实施例并非是唯一的,或者限制本发明。它仅是本发明的构型的一个示例。
图1为用于制造本发明的终端设备的一个优选实施例的金属板的俯视图,该金属板具有单个固定螺钉开口和单个锁紧螺钉开口。
图2为用于制造本发明的终端设备的另一优选实施例的金属板的俯视图,该金属板具有两个固定螺钉开口和单个锁紧螺钉开口。
图3为采用图2的金属板制造的终端设备的四分之三透视图,其示出单个锁紧螺钉与两个固定螺钉重叠。
图4为可用于本发明的终端设备以将终端设备固定至接地金属壁表面的自攻丝螺钉的前视图。
图5为图1实施例的透视图,其示出锁紧螺钉以锁紧方式重叠在固定螺钉顶部上,以防止固定螺钉由于振动或其他原因而退出来。
图6为沿着线6-6截得的图5的截面图。
具体实施方式
下面参考附图描述本发明的优选实施例,但并不意在限制本发明的范围。
本发明的接地终端设备1可由具有后部和前部的大体上平的金属板构造而成,该后部可弯曲形成通路以用于接纳接地线,该前部设置有两个或更多螺钉开口来容纳用于将终端设备固定至接地表面(例如在汽车行李箱中的薄金属壁)的至少一个固定螺钉和至少一个锁紧螺钉。
图1和图2示出接地终端设备1的可选实施例。
在图1中,金属板2构造成具有大体上矩形的后翼部3A和3B,所述后翼部可由常规的弯折机弯曲以形成具有通路5的管状壁4。金属板2还构造成具有大体上平坦的舌形前部6,该前部6从管状壁4延伸。前部6设置有固定螺钉开口7和锁紧螺钉开口8。开口6和7的尺寸设定为分别接纳固定螺钉9和锁紧螺钉10的锥形螺纹柄,但是其直径分别小于螺钉9和10的头部的直径。在图2中,接地终端设备1具有类似构造,但是前部6设置有第二固定螺钉开口11,其尺寸设定为接纳第二固定螺钉12的锥形螺纹柄。
图3示出终端设备1的图2实施例的构造,其中,接地线13定位在通路5中并且前部6固定至平坦的金属接地壁14。接地线13构造成具有由绝缘材料16涂覆的内部金属芯15。通常,芯15由单线或相互缠绕的多股线构造而成。当用于终端设备1时,围绕芯15的延伸的端部部分17的绝缘材料16被去除。通路5的尺寸设定为接纳芯的端部部分17。将延伸至通路5中的芯的端部部分17的长度必须足以在管状壁4被夹压时将芯的端部部分17固定在通路5中。在一个优选实施例中,芯的端部部分17的长度与通路5的长度大约相同。
在一个优选实施例中,螺钉9、10和/或12将是如图4中所示的常规的自攻丝螺钉。自攻丝螺钉9、10和/或12中的每一个均构造成具有头部18和锥形的螺纹杆19,该螺纹杆19自头部18的底面20向下延伸。尽管头部18通常构造成具有其顶面21被弯曲并且具有直径“d”的弧形截面,但是其还可以构造成各种其他形状,包括平的顶面21。在表面21中具有槽22以用于接纳螺丝起子刀口或刀尖。杆19的直径将小于螺钉头部18的直径,并优选约为螺钉头部18的直径的一半。
图5和6示出图1实施例的终端设备1,该终端设备1连接至芯的端部部分17和接地壁14。在终端设备1的所有实施例中,固定螺钉开口7和/或11与锁紧螺钉开口8之间的距离应当设定成确保当锁紧螺钉10操作性地螺纹连接至接地壁14时,该锁紧螺钉10的头部18L将接触固定螺钉头部18S的顶面20并且在其上施加期望的压力。当采用例如在图4中所示的自攻丝螺钉时,优选的距离是在锁紧螺钉10的直径“d”长度的大约四分之一和二分之一之间。
在此实施例中,优选的是,锁紧螺钉10构造成具有头部18L,该头部18L的直径足以允许锁紧螺钉头部18L接触固定螺钉头部18S并且在其上施加期望的抗旋转力。更优选的是,锁紧螺钉头部18L的尺寸和形状设定为:当施加期望的抗旋转力时,使得与固定螺钉头部18S接触的表面区域最大化。在一个实施例中,锁紧螺钉头部18L的底面20L的外周边区域是凹的,以便与固定螺钉头部18S的凸的外表面配合。在另一实施例中,优选的是,锁紧螺钉头部18L的直径“d”设定为使得其周向边缘在距固定螺钉头部的周向边缘一定距离处接触固定螺钉头部18S,所述距离等于固定螺钉头部18S的半径的至少四分之一,更优选地,距固定螺钉头部的周向边缘的距离等于固定螺钉头部18S的半径的至少二分之一。最优选的是如图5中所示,锁紧螺钉头部18L邻近螺钉头部槽22发生重叠,即,大约在固定螺钉头部的顶面21S的中点位置。
当采用终端设备1时,第一步骤为:通过从延伸的芯的端部部分17移除绝缘涂层16以露出内部的金属线15来准备接地线13。要移除的涂层16的量应当足以露出一定长度的线15,以使得当线15放置在通路5中时,可通过夹压所述壁4将线15固定在该位置。优选地,露出的线17的长度大约与通路5的长度相同。
在准备好接地线13之后,将裸线端部部分17插至通路5中,并且夹压所述壁4以便在通路5中既物理地又电气地固定端部部分17。然后,使终端设备的前部6的底面23与接地壁14接触。将固定螺钉9插入开口7并且充分地拧至接地壁14中,由此将终端设备1牢固地固定至接地壁14上。如果采用一个以上的固定螺钉,例如在图3构型中的第二固定螺钉12,则将第二固定螺钉12插入第二固定螺钉开口11,并且还充分地拧至接地壁14中以用于进一步将终端设备1固定至壁14。在有效地附连固定螺钉之后,将锁紧螺钉10插入锁紧螺钉开口8中,并且拧至壁14中直到其螺钉头部的底面20L充分地压靠在螺钉头部的顶面21S上,以防止振动造成固定螺钉9从壁14退出。
优选的是,固定螺钉和锁紧螺钉两者大体上是相同的,以便更好地避免安装人员选择不正确的螺钉作为锁紧螺钉10。为更进一步简化安装,还优选的是,固定螺钉开口7和锁紧螺钉开口8的空间对中性设定为使得任一开口可服务于另一开口的功能。
尽管已经详细描述了本发明及其优点,但应当理解的是,可作出各种变化、替代和变型而不背离由所附权利要求限定的本发明的精神和范围。此外,本申请的范围并非旨在限于说明书中所描述的工艺、机械、制造、物质组成、装置、方法以及步骤的特定实施例。本领域技术人员从本发明的公开内容将认识到,根据本发明可采用与本文所描述的相应实施例执行大体相同功能或实现大体相同结果的现有的或待开发的工艺、机械、制造、物质组成、装置、方法或步骤。因此,所附的权利要求书的范围意在包括这样的工艺、机械、制造、物质组成、装置、方法或步骤。

Claims (17)

1.一种终端设备,包括固定螺钉、锁紧螺钉、接地线接纳部和金属接地板部,所述接地线接纳部用于将接地线固定至所述接地线接纳部,所述金属接地板部具有固定螺钉开口和锁紧螺钉开口以用于分别接纳固定螺钉和锁紧螺钉,所述固定螺钉包括具有预定直径的固定螺钉头部,所述锁紧螺钉包括具有预定直径的锁紧螺钉头部,所述固定螺钉开口和所述锁紧螺钉开口相对彼此定位成:使得当所述锁紧螺钉和所述固定螺钉两者已经分别延伸通过所述锁紧螺钉开口和所述固定螺钉开口时,所述锁紧螺钉头部将接触所述固定螺钉头部并且抵靠所述固定螺钉头部施加抗旋转力。
2.根据权利要求1所述的终端设备,其中,所述接地线接纳部形成通路,所述接地线能够延伸至所述通路中并且固定至所述接地线接纳部。
3.根据权利要求1所述的终端设备,其中,所述锁紧螺钉和所述固定螺钉为具有大致相同的尺寸和形状的自攻丝螺钉。
4.根据权利要求1所述的终端设备,其中,所述锁紧螺钉头部具有周向边缘;所述锁紧螺钉头部的直径设定为使得所述锁紧螺钉头部的周向边缘在距所述固定螺钉头部的周向边缘一定距离处接触所述固定螺钉头部,所述距离等于所述固定螺钉头部的半径的至少四分之一。
5.根据权利要求4所述的终端设备,其中,距所述固定螺钉头部的距离等于所述锁紧螺钉头部的半径的至少二分之一。
6.根据权利要求1所述的终端设备,其中,所述锁紧螺钉头部的尺寸和形状设定为:使得所述锁紧螺钉头部和所述固定螺钉头部之间的表面接触最大化。
7.根据权利要求1所述的终端设备,其中,所述锁紧螺钉头部构造成具有凹的底面,并且所述固定螺钉头部构造成具有凸的顶部形状以便与所述凹的底面配合。
8.根据权利要求3所述的终端设备,其中,所述固定螺钉开口相对于所述锁紧螺钉开口定位在螺钉头部的直径的四分之一到二分之一之间的距离内。
9.根据权利要求1所述的终端设备,其中,具有两个固定螺钉开口,所述两个固定螺钉开口中的每一个均相对于所述锁紧螺钉开口定位在螺钉头部的直径的四分之一到二分之一之间的距离内。
10.一种采用终端设备将从DC供电的电气或电子部件延伸的接地线固定至位于另一结构中的金属壁表面的方法,其中,所述终端设备包括固定螺钉、锁紧螺钉、接地线接纳部和金属接地板部,所述接地线接纳部用于将接地线固定至所述接地线接纳部,所述金属接地板部具有固定螺钉开口和锁紧螺钉开口,以用于分别接纳固定螺钉和锁紧螺钉,所述固定螺钉开口和所述锁紧螺钉开口相对彼此定位成:使得当所述锁紧螺钉和所述固定螺钉两者均已经分别延伸通过所述锁紧螺钉开口和所述固定螺钉开口时,具有已知直径的螺钉头部的所述锁紧螺钉将接触所述固定螺钉并且在其上施加抗旋转力,所述方法包括以下步骤:
a.将所述接地线固定至所述接地线接纳部;
b.将所述金属接地板部邻近所述金属壁表面定位;
c.将所述固定螺钉插入所述固定螺钉开口,并且将所述固定螺钉旋拧到所述金属壁表面中至足够距离处以将所述金属接地板部固定至所述金属壁表面;以及
d.将所述锁紧螺钉插入所述锁紧螺钉开口,并且将所述锁紧螺钉旋拧到所述金属壁表面中至足够距离处,由此所述锁紧螺钉的螺钉头部以向下的抗旋转力接触所述固定螺钉。
11.根据权利要求10所述的方法,其中,所述固定螺钉开口定位在与所述锁紧螺钉开口相距所述螺钉头部的直径的四分之一到二分之一之间的距离处。
12.根据权利要求11所述的方法,其中,具有两个或更多固定螺钉,将两个固定螺钉均插入所述金属接地板部中的各自的固定螺钉开口中,并且将两个固定螺钉均旋拧到所述金属壁中至足够距离处以将所述金属接地板部固定至所述金属壁,以及,将所述锁紧螺钉旋拧到所述金属壁中至足够距离处,由此所述锁紧螺钉的所述螺钉头部接触每个所述固定螺钉并且在每个所述固定螺钉上施加抗旋转力,以防止所述固定螺钉反向旋转而从所述金属壁出来。
13.根据权利要求10所述的方法,其中,所述锁紧螺钉和所述固定螺钉为自攻丝螺钉。
14.根据权利要求10所述的方法,其中,所述锁紧螺钉头部具有周向边缘;所述锁紧螺钉头部的直径设定为使得所述锁紧螺钉头部的周向边缘在距所述固定螺钉头部的周向边缘一定距离处接触所述固定螺钉头部,所述距离等于所述固定螺钉头部的半径的至少四分之一。
15.根据权利要求14所述的方法,其中,距所述固定螺钉头部的距离等于所述固定螺钉头部的半径的至少二分之一。
16.根据权利要求10所述的方法,其中,所述锁紧螺钉头部的尺寸和形状设定为:使得所述锁紧螺钉头部和所述固定螺钉头部之间的表面接触最大化。
17.根据权利要求11所述的方法,其中,两个所述固定螺钉开口中的每一个均相对于所述锁紧螺钉开口定位在螺钉头部的直径的四分之一到二分之一之间的距离内。
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