FR2803695A1 - Electrical conductor/electrical unit fixing mechanism with vibration deadening intermediate isolating section having gap between unit and support with fixing element providing electrical continuity. - Google Patents
Electrical conductor/electrical unit fixing mechanism with vibration deadening intermediate isolating section having gap between unit and support with fixing element providing electrical continuity. Download PDFInfo
- Publication number
- FR2803695A1 FR2803695A1 FR0000348A FR0000348A FR2803695A1 FR 2803695 A1 FR2803695 A1 FR 2803695A1 FR 0000348 A FR0000348 A FR 0000348A FR 0000348 A FR0000348 A FR 0000348A FR 2803695 A1 FR2803695 A1 FR 2803695A1
- Authority
- FR
- France
- Prior art keywords
- spacer
- support
- fastening device
- electrical
- screw
- 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.)
- Granted
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Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall
- H01R13/74—Means for mounting coupling parts in openings of a panel
- H01R13/748—Means for mounting coupling parts in openings of a panel using one or more screws
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- 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
- H01R4/307—Clamped connections, spring connections utilising a screw or nut clamping member characterised by the thread of the screw or nut
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- Connection Of Plates (AREA)
Abstract
Description
L'invention concerne un dispositif de fixation 'un organe électrique sur un support en un matériau électriquement conducteur, avec interposition 'un matériau électriquement isolant, tel qu'une masse insonorisante, au moyen d'un élément de fixation assurant la liaison électrique entre ledit organe et le support. The invention relates to a device for fixing an electrical member to a support of an electrically conductive material, with the interposition of an electrically insulating material, such as a sound-absorbing mass, by means of a fixing element ensuring the electrical connection between said organ and support.
La figure 1 montre un dispositif de fixation connu de ce type. Ce dispositif est utilisé pour fixer un boîtier électronique 1 sur un support en tôle 2, avec interposition d'un matériau insonorisant 3. Le dispositif comporte une vis électrozinguée 4 en acier spécial. Cette vis comprend un épaulement 5 sur lequel repose la partie métallique 6 du boîtier 1, qui doit être mise à la masse. Un écrou 7 assure la fixation du boîtier sur la à épaulement. Figure 1 shows a known fastening device of this type. This device is used to fix an electronic unit 1 to a sheet metal support 2, with the interposition of a sound-absorbing material 3. The device comprises an electro-galvanized screw 4 made of special steel. This screw includes a shoulder 5 on which the metal part 6 of the housing 1 rests, which must be grounded. A nut 7 secures the housing to the shoulder.
Etant donné que la vis 4 doit être soudée la tôle 2, elle reçoit un revêtement anticorrosion. Cependant, pour des raisons de commodité, on ne protège ni l'épaulement 5 ni la partie filetée de la vis. ce fait, le contact électrique risque d'être mauvais entre l'écrou 7 et le filetage d'une part, la partie du boîtier et l'épaulement 5 de la vis d'autre part. Comme, de plus, une partie de la masse insonorisante 3 peut se trouver pincée entre la partie 6 du boîtier et l'épaulement 5 de la vis, la qualité de la liaison électrique risque d'être encore moins bonne. Since the screw 4 must be welded to the sheet 2, it receives an anticorrosion coating. However, for reasons of convenience, neither the shoulder 5 nor the threaded part of the screw is protected. this fact, the electrical contact may be bad between the nut 7 and the thread on the one hand, the housing part and the shoulder 5 of the screw on the other hand. As, moreover, part of the soundproofing mass 3 may be pinched between the part 6 of the housing and the shoulder 5 of the screw, the quality of the electrical connection risks being even less good.
La présente invention a pour but de proposer un dispositif de fixation du type défini plus haut, qui ne présente pas les inconvénients qui viennent d'être énoncés. The present invention aims to provide a fixing device of the type defined above, which does not have the drawbacks which have just been stated.
Pour atteindre ce but, le dispositif de fixation selon l'invention est caractérisé en ce qu'il comporte une entretoise interposée entre l'organe et le support en étant en contact électrique avec ce dernier, l'élément de fixation étant en contact électrique d'une part avec 'organe à fixer et d'autre part avec l'entretoise. Selon une autre caractéristique de l'invention 'entretoise est en forme générale de fût et l'élément fixation est en contact électrique avec la partie interne fût. To achieve this object, the fixing device according to the invention is characterized in that it comprises a spacer interposed between the member and the support while being in electrical contact with the latter, the fixing element being in electrical contact d 'on the one hand with' member to be fixed and on the other with the spacer. According to another characteristic of the invention, the spacer is in the general shape of a barrel and the fixing element is in electrical contact with the internal part of the barrel.
Selon encore une autre caractéristique de 'invention, l'élément de fixation est une vis auto- taraudeuse apte à se visser dans le fût d'entretoise. According to yet another characteristic of the invention, the fixing element is a self-tapping screw capable of being screwed into the spacer barrel.
Selon encore une autre caractéristique de l'invention, la tête de la vis présente une partie en forme de collerette qui est appliquée contre une partie en matériau électriquement conducteur de l'organe à fixer lorsque la vis est en position de serrage. According to yet another characteristic of the invention, the head of the screw has a part in the form of a collar which is applied against a part made of electrically conductive material of the member to be fixed when the screw is in the tightening position.
Selon encore une autre caractéristique de l'invention, la collerette précitée de la tête de vis en appui sur une face de la partie précitée en matériau électriquement conducteur, opposée à une face en contact avec le matériau isolant. According to yet another characteristic of the invention, the aforementioned flange of the screw head resting on one face of the aforementioned part made of electrically conductive material, opposite to a face in contact with the insulating material.
Selon encore une autre caractéristique 'invention, l'entretoise est fixée sur le support avantageusement par soudage. According to yet another characteristic of the invention, the spacer is advantageously fixed to the support by welding.
Bien entendu, le soudage est effectué de manière à garantir une bonne qualité de liaison électrique entre 'entretoise et le support. Of course, the welding is carried out so as to guarantee a good quality of electrical connection between the spacer and the support.
Selon encore une autre caractéristique 'invention, l'entroise est intégrée au support. Selon encore une autre caractéristique 'invention, l'entroise présente à sa partie inférieure adjacente au support au moins une patte par laquelle el est soudée sur ce support. According to yet another characteristic 'invention, the spacer is integrated into the support. According to yet another characteristic 'invention, the spacer has at its lower part adjacent to the support at least one tab by which el is welded to this support.
Selon encore une autre caractéristique l'invention, le dispositif de fixation comporte moyens de centrage de l'entretoise sur le support. According to yet another characteristic of the invention, the fixing device comprises means for centering the spacer on the support.
Selon encore une autre caractéristique l'invention, les moyens de centrage comprennent au moins une patte à l'extrémité inférieure de l'entretoise et au moins une partie de bord rabattue prévue sur le support, la patte étant destinée à venir en contact avec la partie bord rabattue. According to yet another characteristic of the invention, the centering means comprise at least one tab at the lower end of the spacer and at least one folded edge portion provided on the support, the tab being intended to come into contact with the folded edge part.
Selon encore une autre caractéristique de 'invention, l'entretoise comporte des moyens d'appui sur organe à fixer. According to yet another characteristic of the invention, the spacer comprises support means on the member to be fixed.
Selon encore une autre caractéristique de invention, les moyens d'appui comprennent une patte radiale à la partie supérieure de l'entretoise, adjacente a l'organe à fixer, sur laquelle ce dernier peut venir en appui lors du serrage de la vis. According to yet another characteristic of the invention, the support means comprise a radial tab at the upper part of the spacer, adjacent to the member to be fixed, on which the latter can come to bear when tightening the screw.
Selon encore une autre caractéristique de invention, le dispositif de fixation comporte des moyens de centrage de l'organe à fixer rapport à entretoise. According to yet another characteristic of the invention, the fixing device comprises means for centering the member to be fixed relative to the spacer.
Selon encore une autre caractéristique de invention, les moyens de centrage comprennent une jupe cylindrique solidaire de l'organe à fixer entourant la partie supérieure de l'entretoise. According to yet another characteristic of the invention, the centering means comprise a cylindrical skirt integral with the member to be fixed surrounding the upper part of the spacer.
L'invention sera mieux comprise, et 'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement au cours de description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre d'exemple lustrant un seul mode de réalisation de l'invention, et dans lesquels - la figure 1 est une vue en coupe partielle d'un dispositif de fixation de l'état de la technique ; - la figure 2 est une vue en coupe partielle d'un dispositif de fixation selon la présente invention ; - la figure 3 est une vue en coupe long de la igné III-III de la figure 2, et - la f figure 4 est une vue en coupe long de la igné IV-IV de la figure 2. The invention will be better understood, and 'other objects, characteristics, details and advantages thereof will appear more clearly during the explanatory description which follows, made with reference to the appended schematic drawings given solely by way of example illustrating a single mode. of the invention, and in which - Figure 1 is a partial sectional view of a fixing device of the prior art; - Figure 2 is a partial sectional view of a fixing device according to the present invention; - Figure 3 is a long sectional view of the igneous III-III of Figure 2, and - Figure 4 is a long sectional view of the igneous IV-IV of Figure 2.
Les figures 2 à 4 montrent un spositif de fixation selon l'invention. Ce dispositi sert, comme dans le cas de la figure 1, pour la fixation par exemple 'un boîtier électronique 1 sur une tôle support 2 de véhicule automobile, avec interposition d'une masse insonorisante 3. Figures 2 to 4 show a fixing device according to the invention. This arrangement serves, as in the case of FIG. 1, for fixing, for example, an electronic unit 1 on a support sheet 2 of a motor vehicle, with the interposition of a sound absorbing mass 3.
Le dispositif de fixation selon l'invention comporte une vis auto-taraudeuse 8 s'engageant dans une entretoise à fût lisse 9 comportant à son extrémité inférieure trois pattes 10 angulairement réparties de façon équidistante autour de l'axe de l'entretoise et s'étendant radialement vers l'extérieur, et à son extrémité supérieure trois pattes 12 également réparties angulairement de façon équidistante autour de l'axe de l'entretoise et en saillie radialement vers l'extérieur. Les pattes inférieures 10 sont soudées sur le support 2 en tôle. L'entretoise comporte encore à son extrémité inférieure des pattes de centrage 13 qui s'étendent axialement, en étant déportées radialement vers l'extérieur par rapport à la face cylindrique extérieure de l'entretoise, et sont obtenues par un premier pliage radialement vers l'extérieur et ensuite un deuxième repliage dans une direction parallèle à l'axe de 'entretoise. Pour le centrage, le bord de 'ouverture de passage 15 de la tôle de support 2 comporte trois pattes centrage 16 angulairement équidistantes en saillie vers le haut dans la direction axiale de l'orifice 15 et l'axe de l'entretoise. Comme le montre figure 2, lorsque l'entretoise 9 est mise en place sur le support en tôle 2, les faces intérieures des pattes de centrage de l'entretoise sont en appui sur les faces extérieures des pattes de centrage 16 du support. Ainsi pattes 16 du bord relevé, calibré de 1 ouverture 15, en coopération avec les pattes 13 de l'entretoise, assurent le positionnement précis de cette dernière. L'entretoise peut être fixée sur la tôle 2 au niveau des pattes 10 par exemple par des points de soudure indiqués en 19. The fixing device according to the invention comprises a self-tapping screw 8 engaging in a smooth barrel spacer 9 having at its lower end three legs 10 angularly distributed equidistantly around the axis of the spacer and s' extending radially outward, and at its upper end three legs 12 also distributed angularly equidistant around the axis of the spacer and projecting radially outward. The lower tabs 10 are welded to the sheet metal support 2. The spacer also comprises at its lower end centering lugs 13 which extend axially, being offset radially outward relative to the outer cylindrical face of the spacer, and are obtained by a first bending radially towards the 'exterior and then a second folding in a direction parallel to the axis of' spacer. For centering, the edge of the passage opening 15 of the support plate 2 has three centering tabs 16 angularly equidistant projecting upward in the axial direction of the orifice 15 and the axis of the spacer. As shown in Figure 2, when the spacer 9 is placed on the sheet metal support 2, the inner faces of the centering tabs of the spacer are supported on the outer faces of the centering tabs 16 of the support. Thus legs 16 of the raised edge, calibrated with 1 opening 15, in cooperation with the legs 13 of the spacer, ensure the precise positioning of the latter. The spacer can be fixed to the sheet 2 at the tabs 10, for example by welding points indicated in 19.
Concernant la vis de fixation 8, elle est en acier spécial et présente à son extrémité avant s'engageant dans l'ouverture 15 une forme 20 va en se rétrécissant vers l'extrémité et est apte à réaliser un taraudage dans l'entretoise 9. A cette extrémité avant, la vis comporte en outre un dégagement 22 pour recueillir les copeaux formés la portion 20 dans le fût de l'entretoise. As regards the fixing screw 8, it is made of special steel and has at its front end engaging in the opening 15 a shape 20 which tapers towards the end and is capable of producing a tapping in the spacer 9. At this front end, the screw also has a clearance 22 for collecting the shavings formed the portion 20 in the barrel of the spacer.
Il est encore a noter que la face par laquelle la tête 23 de la vis est en appui contre la partie 6 du boîtier électronique 1 est réalisée sous forme d'une collerette radialement élargie 24. It should also be noted that the face by which the head 23 of the screw bears against part 6 of the electronic unit 1 is produced in the form of a radially enlarged flange 24.
On constate encore que la partie 6 comporte sur sa face inférieure une j de centrage cylindrique 25 qui fait saillie dans direction axiale du dispositif et permet un centrage l'entretoise en entourant la partie supérieure celle-ci. It can also be seen that the part 6 has on its lower face a cylindrical centering j 25 which projects in the axial direction of the device and allows the spacer to be centered by surrounding the upper part thereof.
Dans l'exemple decrit et représenté, l'entretoise est soudée sur le support 2. Il est cependant également possible d'intégrer l'entretoise au support. In the example described and shown, the spacer is welded to the support 2. However, it is also possible to integrate the spacer to the support.
L'invention presente de nombreux avantages par rapport à l'état de technique. L'élément de fixation formé par la vis 8 n etant pas soudé, sa surface n'a pas à être revêtue d'un produit anticorrosion particulier et elle garde ses proprietés électriques, ce qui assure un bon contact électrique notamment entre la collerette 24 et la partie 6 du boîtier. The invention has many advantages over the state of the art. Since the fixing element formed by the screw 8 is not welded, its surface does not have to be coated with a particular anti-corrosion product and it retains its electrical properties, which ensures good electrical contact, in particular between the flange 24 and part 6 of the housing.
Dans le mode de realisation préféré où l'on utilise une vis auto-taraudeuse on assure un contact très étroit entre la vis et le fût de l'entretoise. Par ailleurs, la tête de la vis subit une rotation en contact avec la partie 6 du boîtier en fin de serrage, ce qui provoque une abrasion de cette surface et donc un bon contact électrique. De plus, la tête de vis est en contact avec la face de la partie opposée à celle qui est en contact avec le matériau isolant 3. Les risques de pincement de celui-ci sont donc ' iminés. Enfin, le fait que la vis soit auto-taraudeuse fait qu'il reste en fin de serrage un couple résiduel important qui élimine tout risque de dévissage intempestif et il n'est pas nécessaire de prévoir un dispositif de freinage particulier.In the preferred embodiment where a self-tapping screw is used, very close contact is provided between the screw and the barrel of the spacer. Furthermore, the head of the screw undergoes rotation in contact with part 6 of the housing at the end of tightening, which causes abrasion of this surface and therefore good electrical contact. In addition, the screw head is in contact with the face of the part opposite to that which is in contact with the insulating material 3. The risks of pinching thereof are therefore 'imagined. Finally, the fact that the screw is self-tapping means that at the end of tightening there is a large residual torque which eliminates any risk of untimely unscrewing and it is not necessary to provide a specific braking device.
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0000348A FR2803695B1 (en) | 2000-01-12 | 2000-01-12 | DEVICE FOR FIXING AN ELECTRICAL MEMBER ON A SUPPORT OF CONDUCTIVE ELECTRIC MATERIAL |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0000348A FR2803695B1 (en) | 2000-01-12 | 2000-01-12 | DEVICE FOR FIXING AN ELECTRICAL MEMBER ON A SUPPORT OF CONDUCTIVE ELECTRIC MATERIAL |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2803695A1 true FR2803695A1 (en) | 2001-07-13 |
FR2803695B1 FR2803695B1 (en) | 2002-04-19 |
Family
ID=8845832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR0000348A Expired - Fee Related FR2803695B1 (en) | 2000-01-12 | 2000-01-12 | DEVICE FOR FIXING AN ELECTRICAL MEMBER ON A SUPPORT OF CONDUCTIVE ELECTRIC MATERIAL |
Country Status (1)
Country | Link |
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FR (1) | FR2803695B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007006177A1 (en) * | 2007-02-07 | 2008-08-14 | Siemens Ag | Ground connection with vibration damper for electronic devices |
WO2012130234A1 (en) * | 2011-04-01 | 2012-10-04 | Ruia Global Fasteners Ag | Electrically conductive screw connection and special bushing for a screw connection of said type |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3124408A (en) * | 1962-02-13 | 1964-03-10 | Gen Am Transport | Screw fasteners and terminal boards incorporating the same |
DE3716276A1 (en) * | 1987-05-15 | 1988-12-01 | Audi Ag | Welding sleeve for an earth connection point to a sheet-metal component |
JPH02205382A (en) * | 1989-02-03 | 1990-08-15 | Hitachi Ltd | Semiconductor laser element |
US5458512A (en) * | 1993-08-18 | 1995-10-17 | Daiichi Denso Buhin Co., Inc. | Mounting and grounding connectors for electrical components |
US5669262A (en) * | 1993-12-27 | 1997-09-23 | Simmonds Precision Products, Inc. | Removable ultrasonic transducer with integral electrical disconnect |
-
2000
- 2000-01-12 FR FR0000348A patent/FR2803695B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3124408A (en) * | 1962-02-13 | 1964-03-10 | Gen Am Transport | Screw fasteners and terminal boards incorporating the same |
DE3716276A1 (en) * | 1987-05-15 | 1988-12-01 | Audi Ag | Welding sleeve for an earth connection point to a sheet-metal component |
JPH02205382A (en) * | 1989-02-03 | 1990-08-15 | Hitachi Ltd | Semiconductor laser element |
US5458512A (en) * | 1993-08-18 | 1995-10-17 | Daiichi Denso Buhin Co., Inc. | Mounting and grounding connectors for electrical components |
US5669262A (en) * | 1993-12-27 | 1997-09-23 | Simmonds Precision Products, Inc. | Removable ultrasonic transducer with integral electrical disconnect |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 014, no. 496 (E - 0996) 29 October 1990 (1990-10-29) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007006177A1 (en) * | 2007-02-07 | 2008-08-14 | Siemens Ag | Ground connection with vibration damper for electronic devices |
US7934940B2 (en) | 2007-02-07 | 2011-05-03 | Continental Automotive Gmbh | Ground connection comprising a vibrational damper for electronic devices |
DE102007006177B4 (en) * | 2007-02-07 | 2019-06-19 | Continental Automotive Gmbh | Ground connection with vibration damper for electronic devices |
WO2012130234A1 (en) * | 2011-04-01 | 2012-10-04 | Ruia Global Fasteners Ag | Electrically conductive screw connection and special bushing for a screw connection of said type |
Also Published As
Publication number | Publication date |
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FR2803695B1 (en) | 2002-04-19 |
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