DE19937047A1 - Earth contact for motor vehicle, has threaded bolt, hat nut for threaded bolt with metal clamp flange and threaded part and plastic cap closing threaded bore on side remote from contact flange - Google Patents
Earth contact for motor vehicle, has threaded bolt, hat nut for threaded bolt with metal clamp flange and threaded part and plastic cap closing threaded bore on side remote from contact flangeInfo
- Publication number
- DE19937047A1 DE19937047A1 DE1999137047 DE19937047A DE19937047A1 DE 19937047 A1 DE19937047 A1 DE 19937047A1 DE 1999137047 DE1999137047 DE 1999137047 DE 19937047 A DE19937047 A DE 19937047A DE 19937047 A1 DE19937047 A1 DE 19937047A1
- Authority
- DE
- Germany
- Prior art keywords
- threaded
- flange
- cap
- threaded bolt
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/20—Stud welding
- B23K9/207—Features related to studs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-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
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-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
- H01R4/58—Electrically-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
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0288—Welding studs
Abstract
Description
Die Erfindung betrifft einen für ein Kraftfahr zeug bestimmten Massekontakt, bestehend aus einem mit ei nem Karosserieteil an einer Stirnfläche zu verschweißen den Gewindebolzen aus Metall, welcher einen Auflage flansch hat und aus einer auf den Gewindebolzen ge schraubten Hutmutter, welche ein Gewindeteil mit einer Gewindebohrung und an der dem Auflageflansch zugewandten Seite einen Spannflansch und an ihrer dem Auflageflansch abgewandten Seite eine ihre Gewindebohrung verschließende Kappe hat.The invention relates to a motor vehicle witness specific ground contact, consisting of one with egg to weld a body part to an end face the threaded bolt made of metal, which has a support has flange and from one on the threaded bolt screwed cap nut, which is a threaded part with a Tapped hole and on the facing flange Side a clamping flange and on the support flange facing away from their threaded bore Hat.
Massekontakte der vorstehenden Art werden in Kraftfahrzeugen eingesetzt und sind allgemein bekannt. Sie dienen beispielsweise dazu, das Gehäuse eines Be schleunigungssensors oder eines Airbagsteuergerätes mit der Karosserie eines Kraftfahrzeugs elektrisch zu verbin den. Massekontakte können auch dazu dienen, ein von einem Gerät kommendes Kabel an die Fahrzeugkarosserie anzu schließen. Die Gewindebolzen werden vor dem Lackieren der Karosserie mit dieser verschweißt. Deshalb ist es erfor derlich, dass beim Lackieren die Hutmutter vollständig auf den Gewindebolzen geschraubt ist, damit beim Lackie ren der Auflageflansch sowie die Gewindegänge des Gewin debolzens nicht mit Lack überzogen und deshalb elektrisch nicht leitend werden. Ground contacts of the above type are in Motor vehicles used and are generally known. They serve, for example, the housing of a Be acceleration sensor or an airbag control unit with to electrically connect the body of a motor vehicle the. Ground contacts can also be used one by one Device incoming cable to the vehicle body conclude. The threaded bolts are removed before painting the Body welded to this. Therefore it is needed that the cap nut completely when painting is screwed onto the threaded bolt, so with the paintwork the support flange and the threads of the thread debolzens not covered with paint and therefore electrical not become a leader.
Verwendet man eine aus Kunststoff bestehende Hutmutter, dann muss man diese nach dem Lackieren entfer nen und gegen eine Mutter aus Metall austauschen, damit elektrischer Strom über die Mutter in den Gewindebolzen fließen kann und weil Muttern aus Kunststoff meist nicht die erforderliche Festigkeit haben, um beispielsweise ei nen Beschleunigungssensor zuverlässig an einer Kraftfahr zeugkarosserie zu befestigen. Das Abschrauben der Hutmut ter aus Kunststoff und anschließende Aufschrauben einer Mutter aus Metall bedingt beträchtlichen Montageaufwand und führt zu Abfall, der zu entsorgen ist. Benutzt man von Anfang an Hutmuttern aus Metall, dann machen sich die relativ hohen Kosten solcher Hutmuttern nachteilig be merkbar.If you use an existing plastic Cap mother, then you have to remove this after painting and replace with a metal nut so that electrical current through the nut in the threaded bolt can flow and because plastic nuts usually do not have the required strength to, for example, egg acceleration sensor reliably on a motor vehicle attach the body. Unscrewing hatred ter made of plastic and then screwing one Metal nut requires considerable assembly effort and leads to waste that has to be disposed of. One uses metal cap nuts from the start, then they make themselves relatively high cost of such cap nuts disadvantageously noticeable.
Der Erfindung liegt das Problem zugrunde, einen Massekontakt der eingangs genannten Art so auszubilden, dass er mit möglichst geringem Aufwand zu montieren ist und mit insgesamt geringen Kosten hergestellt werden kann.The invention is based on the problem of a To design ground contact of the type mentioned at the beginning, that it can be assembled with as little effort as possible and are manufactured at a low overall cost can.
Dieses Problem wird erfindungsgemäß dadurch ge löst, dass der Spannflansch und das Gewindeteil der Hut mutter als Metallteil ausgebildet sind und die Kappe aus Kunststoff besteht.This problem is inventively ge loosens that the clamping flange and the threaded part of the hat mother are formed as a metal part and the cap Plastic is made.
Durch diese Kombination von zwei Werkstoffen wird die Hutmutter insgesamt sehr kostengünstig herstell bar. Da der Spannflansch und das Gewindeteil aus Metall bestehen, vermag die Hutmutter elektrischen Strom in den Massekontakt zu leiten und ist zugleich in der Lage, auf grund ihrer Festigkeit hohe Spannkräfte zu erzeugen. Da die Kappe lediglich das Eindringen von Lack in das Innere der Hutmutter und damit ein Überziehen des Gewindes des Gewindebolzens mit Lack verhindert und keine Kräfte über tragen muss, kann diese aus einem sehr kostengünstig er hältlichen Kunststoff hergestellt werden. Gegenüber einer Hutmutter aus Metall ist die erfindungsgemäße Mutter leichter.This combination of two materials the cap nut will be manufactured very inexpensively overall bar. Because the clamping flange and the threaded part made of metal exist, the cap nut can current into the Conduct ground contact and is also able to to generate high clamping forces due to their strength. There the cap just the penetration of paint inside the cap nut and thus overtightening the thread of the Prevents threaded bolt with paint and no forces over can wear it from a very inexpensive he plastic can be made. Opposite one The metal cap nut is the nut according to the invention lighter.
Die Kappe hält zuverlässig auf der Hutmutter, wenn gemäß einer Weiterbildung der Erfindung die Kappe einstückig mit einem das Gewindeteil umschließenden Kunststoffkörper ausgebildet ist.The cap holds securely on the cap nut, if, according to a development of the invention, the cap in one piece with a surrounding the threaded part Plastic body is formed.
Eine andere, vorteilhafte Weiterbildung der Er findung besteht darin, dass der Kunststoffkörper durch Umspritzen des Metallteils gebildet ist und einen Sechs kantbereich hat. Eine solche Hutmutter ist ganz besonders kostengünstig herstellbar.Another advantageous development of the Er invention is that the plastic body through Overmolding of the metal part is formed and a six edge area. Such a cap mother is very special inexpensive to manufacture.
Der Verbrauch an Metall für die Hutmutter ist besonders gering, wenn der Kunststoffkörper mit seiner Kappe über das freie Ende des Gewindebolzens hinweg ragt.The consumption of metal for the cap nut is particularly low if the plastic body with its Cap protrudes over the free end of the threaded bolt.
Wenn die Hutmutter mit einem Schraubwerkzeug von dem Gewindebolzen abgeschraubt und anschließend nach dem Aufschieben eines Bauteils wieder auf den Gewindebol zen aufgeschraubt werden soll, dann hält die Hutmutter von selbst in der Nuss des Schraubwerkzeugs, wenn gemäß einer anderen Weiterbildung der Erfindung auf dem Sechs kantbereich einander gegenüberliegend zwei zur Seite des Spannflansches hin divergierende Rippen angeordnet sind.If the cap nut with a screwing tool unscrewed from the threaded bolt and then after pushing a component back onto the threaded bolt zen should be screwed on, then the cap nut holds by itself in the nut of the screwing tool if according to another development of the invention on the six edge area opposite each other two to the side of the Clamping flange are arranged diverging ribs.
Die erforderlichen Drehmomente zum Festziehen und Lösen der Hutmutter werden von dem Kunststoffkörper zuverlässig auf die Gewindebuchse übertragen, ohne dass es zu einem Verdrehen der Bauteile relativ zueinander kommt, wenn gemäß einer anderen Weiterbildung der Erfin dung das Gewindeteil außenseitig eine Rändelung aufweist.The tightening torques required and loosening the cap nut from the plastic body reliably transferred to the threaded bush without it to a rotation of the components relative to each other comes when the Erfin the threaded part has knurling on the outside.
Die Erfindung lässt verschiedene Ausführungs formen zu. Zur weiteren Verdeutlichung ihres Grundprin zips ist eine davon in der Zeichnung dargestellt und wird nachfolgend beschrieben. Diese zeigt inThe invention allows different execution shape to. To further clarify your basic prin zips is one of them shown in the drawing and will described below. This shows in
Fig. 1 einen Längsschnitt durch einen Masse kontakt nach der Erfindung, Fig. 1 shows a longitudinal section through a ground contact according to the invention,
Fig. 2 eine Draufsicht auf den Massekontakt, Fig. 2 is a plan view of the ground contact,
Fig. 3 eine perspektivische Ansicht des Mas sekontaktes in einem Anlieferungszu stand, Fig. 3 is a perspective view of the Mas sekontaktes Anlieferungszu in a stand,
Fig. 4 eine perspektivische Ansicht des Mas sekontaktes im demontierten Zustand. Fig. 4 is a perspective view of the Mas sekontaktes in the disassembled state.
Der in Fig. 1 gezeigte Massekontakt besteht im Wesentlichen aus einem Gewindebolzen 1 aus Metall und ei ner darauf aufgeschraubten Hutmutter 2. Der Gewindebolzen 1 hat einen Auflageflansch 3, gegen den im montierten Zu stand in Fig. 1 gesehen von rechts her ein nicht gezeig tes, mit Masse zu verbindendes Einbauteil aus Metall an liegt. Der Gewindebolzen 1 hat an der Seite des Auflage flansches 3 eine Stirnfläche 4, mit der er an der eben falls nicht dargestellten Karosserie eines Kraftfahrzeugs festgeschweißt wird.The ground contact shown in Fig. 1 consists essentially of a threaded bolt 1 made of metal and egg ner screwed cap nut 2 . The threaded bolt 1 has a support flange 3 , against which in the assembled to stand in Fig. 1 seen from the right, a not shown, to be connected to earth installation part made of metal. The threaded bolt 1 has on the side of the flange 3 an end face 4 with which it is welded to the body of a motor vehicle, if not shown.
Die Hutmutter 2 hat ein als Gewindebuchse aus gebildetes, zylindrisches Gewindeteil 5, welches zusammen mit einem Spannflansch 6 ein Metallteil 7 bildet. Das Me tallteil 7 ist auf seiner Außenmantelfläche von einem Kunststoffkörper 8 umhüllt, der zugleich eine das Metall teil 7 verschließende Kappe 9 bildet und einen Sechskant bereich 10 hat. The cap nut 2 has a cylindrical threaded part 5 formed as a threaded bushing, which together with a clamping flange 6 forms a metal part 7 . The Me tallteil 7 is enveloped on its outer surface by a plastic body 8 , which at the same time forms a metal part 7 closing cap 9 and has a hexagonal area 10 .
Die Fig. 2 verdeutlicht, dass der Sechskantbe reich 10, welcher zum Verdrehen der Hutmutter 2 mittels eines Werkzeugs dient, einander gegenüberliegend zwei Rippen 11, 12 hat, die zur Seite des Spannflansches 6 hin divergieren, was die Fig. 3 und 4 zeigen. Fig. 2 illustrates that the Sechskantbe rich 10 , which is used to rotate the cap nut 2 by means of a tool, has two ribs 11 , 12 opposite one another, which diverge towards the side of the clamping flange 6 , which is shown in FIGS . 3 and 4.
Die Fig. 3 zeigt perspektivisch, dass im An lieferungszustand die Hutmutter 2 vollständig auf den Ge windebolzen 1 aufgeschraubt ist. In diesem zusammenge schraubten Zustand schweißt man den Gewindebolzen 1 an der Karosserie fest und lackiert dann die Karosserie, wo bei die Hutmutter 2 aufgeschraubt bleibt. Dadurch ist das Gewinde des Gewindebolzens während der Lackierung ge schützt. Will man nach dem Lackieren ein Anbauteil mit dem Massekontakt verschrauben, dann schraubt man zunächst die Hutmutter 2 vom Gewindebolzen 1 ab, schiebt das zu befestigende Anbauteil auf den Gewindebolzen 1 und schraubt anschließend die Hutmutter 2 wieder mit dem er forderlichen Drehmoment fest. Fig. 3 shows in perspective that in the delivery state to the cap nut 2 is fully screwed on the Ge threaded bolt 1 . In this screwed together state, the threaded bolt 1 is welded to the body and then painted the body, where the cap nut 2 remains screwed on. This protects the thread of the threaded bolt during painting. If you want to screw an attachment to the ground contact after painting, you first unscrew the cap nut 2 from the threaded bolt 1 , push the attachment to be fastened onto the threaded bolt 1 and then screw the cap nut 2 back with the required torque.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999137047 DE19937047A1 (en) | 1999-08-05 | 1999-08-05 | Earth contact for motor vehicle, has threaded bolt, hat nut for threaded bolt with metal clamp flange and threaded part and plastic cap closing threaded bore on side remote from contact flange |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999137047 DE19937047A1 (en) | 1999-08-05 | 1999-08-05 | Earth contact for motor vehicle, has threaded bolt, hat nut for threaded bolt with metal clamp flange and threaded part and plastic cap closing threaded bore on side remote from contact flange |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19937047A1 true DE19937047A1 (en) | 2001-02-08 |
Family
ID=7917375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1999137047 Withdrawn DE19937047A1 (en) | 1999-08-05 | 1999-08-05 | Earth contact for motor vehicle, has threaded bolt, hat nut for threaded bolt with metal clamp flange and threaded part and plastic cap closing threaded bore on side remote from contact flange |
Country Status (1)
Country | Link |
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DE (1) | DE19937047A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1586404A1 (en) * | 2002-11-23 | 2005-10-19 | Yoshitaka Aoyama | Method of welding shaft-like part on plurally piled steel plates |
DE202008012006U1 (en) | 2008-09-04 | 2008-11-20 | Newfrey Llc, Newark | contacting |
DE102007046690A1 (en) | 2007-09-28 | 2009-04-02 | Volkswagen Ag | Weldable clamp for providing electrical contact in body of motor vehicle, has hexagon cap nut formed between clamping surface and free end of contact studs of free space for accommodating electrical contact |
DE102009004887A1 (en) | 2009-01-16 | 2010-07-22 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Electrical ground connection |
CN102306874A (en) * | 2011-05-06 | 2012-01-04 | 山东超越数控电子有限公司 | Anti-loosening waterproof ground pole for electronic equipment |
CN103252608A (en) * | 2013-05-22 | 2013-08-21 | 成都海凌达机械有限公司 | Welded stud locating device with good locating performance |
DE102004050675B4 (en) * | 2004-10-18 | 2015-05-07 | Volkswagen Ag | Mounting arrangement for at least one cable lug on a welding bolt |
DE102006012761B4 (en) | 2006-03-17 | 2019-03-21 | Volkswagen Ag | Mounting arrangement for at least one cable lug on a welding bolt |
Citations (10)
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---|---|---|---|---|
US1945857A (en) * | 1931-10-10 | 1934-02-06 | Standard Electric Time Co | Binding post |
DE1033297B (en) * | 1955-03-25 | 1958-07-03 | Hirschmann Radiotechnik | Insulator for fixing high frequency cables |
DE1845227U (en) * | 1961-10-20 | 1962-01-18 | Plastica Kunststoffwerk Dr Huc | IN A PLASTIC PART, FOR EXAMPLE IN A BUTTON, SOCKET WITH A THREADED HOLE OR A THREADED PIN OD. DGL. |
GB1370463A (en) * | 1972-06-29 | 1974-10-16 | British Insulated Callenders | Test terminals |
US4365861A (en) * | 1980-12-29 | 1982-12-28 | Illinois Tool Works Inc. | Wire terminal |
DE3613397C2 (en) * | 1986-04-21 | 1989-11-09 | Tucker Gmbh, 6300 Giessen, De | |
EP0540030A2 (en) * | 1991-10-31 | 1993-05-05 | PROFIL-Verbindungstechnik GmbH & Co. KG | Electrical grounding stud |
EP0640404A1 (en) * | 1993-08-24 | 1995-03-01 | NEDSCHROEF PLETTENBERG GmbH | Covering cap |
DE19741830A1 (en) * | 1997-09-23 | 1999-03-25 | Pudenz Wilhelm Gmbh | Fuse system for protecting electrical circuits, esp. in motor vehicles |
DE19749383A1 (en) * | 1997-11-07 | 1999-05-27 | Trw Nelson Bolzenschweisstechn | Collar bolt with anti-twist device |
-
1999
- 1999-08-05 DE DE1999137047 patent/DE19937047A1/en not_active Withdrawn
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1945857A (en) * | 1931-10-10 | 1934-02-06 | Standard Electric Time Co | Binding post |
DE1033297B (en) * | 1955-03-25 | 1958-07-03 | Hirschmann Radiotechnik | Insulator for fixing high frequency cables |
DE1845227U (en) * | 1961-10-20 | 1962-01-18 | Plastica Kunststoffwerk Dr Huc | IN A PLASTIC PART, FOR EXAMPLE IN A BUTTON, SOCKET WITH A THREADED HOLE OR A THREADED PIN OD. DGL. |
GB1370463A (en) * | 1972-06-29 | 1974-10-16 | British Insulated Callenders | Test terminals |
US4365861A (en) * | 1980-12-29 | 1982-12-28 | Illinois Tool Works Inc. | Wire terminal |
DE3613397C2 (en) * | 1986-04-21 | 1989-11-09 | Tucker Gmbh, 6300 Giessen, De | |
EP0540030A2 (en) * | 1991-10-31 | 1993-05-05 | PROFIL-Verbindungstechnik GmbH & Co. KG | Electrical grounding stud |
EP0640404A1 (en) * | 1993-08-24 | 1995-03-01 | NEDSCHROEF PLETTENBERG GmbH | Covering cap |
DE19741830A1 (en) * | 1997-09-23 | 1999-03-25 | Pudenz Wilhelm Gmbh | Fuse system for protecting electrical circuits, esp. in motor vehicles |
DE19749383A1 (en) * | 1997-11-07 | 1999-05-27 | Trw Nelson Bolzenschweisstechn | Collar bolt with anti-twist device |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1586404A4 (en) * | 2002-11-23 | 2008-09-03 | Yoshitaka Aoyama | Method of welding shaft-like part on plurally piled steel plates |
EP1586404A1 (en) * | 2002-11-23 | 2005-10-19 | Yoshitaka Aoyama | Method of welding shaft-like part on plurally piled steel plates |
DE102004050675B4 (en) * | 2004-10-18 | 2015-05-07 | Volkswagen Ag | Mounting arrangement for at least one cable lug on a welding bolt |
DE102006012761B4 (en) | 2006-03-17 | 2019-03-21 | Volkswagen Ag | Mounting arrangement for at least one cable lug on a welding bolt |
DE102007046690A1 (en) | 2007-09-28 | 2009-04-02 | Volkswagen Ag | Weldable clamp for providing electrical contact in body of motor vehicle, has hexagon cap nut formed between clamping surface and free end of contact studs of free space for accommodating electrical contact |
DE202008012006U1 (en) | 2008-09-04 | 2008-11-20 | Newfrey Llc, Newark | contacting |
US8191923B2 (en) | 2009-01-16 | 2012-06-05 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Electrical earth connection and method of producing contact areas for the electrical earth connection |
DE102009004887A1 (en) | 2009-01-16 | 2010-07-22 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Electrical ground connection |
DE102009004887B4 (en) | 2009-01-16 | 2018-03-01 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Electrical ground connection and method for producing such |
CN102306874A (en) * | 2011-05-06 | 2012-01-04 | 山东超越数控电子有限公司 | Anti-loosening waterproof ground pole for electronic equipment |
CN102306874B (en) * | 2011-05-06 | 2013-07-24 | 山东超越数控电子有限公司 | Anti-loosening waterproof ground pole for electronic equipment |
CN103252608A (en) * | 2013-05-22 | 2013-08-21 | 成都海凌达机械有限公司 | Welded stud locating device with good locating performance |
CN103252608B (en) * | 2013-05-22 | 2015-08-12 | 成都海凌达机械有限公司 | The welding screw positioner of having good positioning |
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Owner name: GM GLOBAL TECHNOLOGY OPERATIONS, INC., DETROIT, US |
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Owner name: GM GLOBAL TECHNOLOGY OPERATIONS LLC (N. D. GES, US Free format text: FORMER OWNER: GM GLOBAL TECHNOLOGY OPERATIONS, INC., DETROIT, MICH., US Effective date: 20110323 |
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Effective date: 20140301 |