FR2514224A1 - Cam-action fastening mechanism for electrical equipment covers - has rotatable rod with wire loop forcing base sideways and increasing force between electrical pins - Google Patents

Cam-action fastening mechanism for electrical equipment covers - has rotatable rod with wire loop forcing base sideways and increasing force between electrical pins Download PDF

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Publication number
FR2514224A1
FR2514224A1 FR8118713A FR8118713A FR2514224A1 FR 2514224 A1 FR2514224 A1 FR 2514224A1 FR 8118713 A FR8118713 A FR 8118713A FR 8118713 A FR8118713 A FR 8118713A FR 2514224 A1 FR2514224 A1 FR 2514224A1
Authority
FR
France
Prior art keywords
cam
rod
base
loop
plate
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
Application number
FR8118713A
Other languages
French (fr)
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FR2514224B1 (en
Inventor
Guy Stoll
Eric Peillien
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie de Signaux et dEntreprises Electriques SA
Original Assignee
Compagnie de Signaux et dEntreprises Electriques SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Compagnie de Signaux et dEntreprises Electriques SA filed Critical Compagnie de Signaux et dEntreprises Electriques SA
Priority to FR8118713A priority Critical patent/FR2514224A1/en
Publication of FR2514224A1 publication Critical patent/FR2514224A1/en
Application granted granted Critical
Publication of FR2514224B1 publication Critical patent/FR2514224B1/fr
Granted legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/02—Releasable fastening devices locking by rotation
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B73/00—Devices for locking portable objects against unauthorised removal; Miscellaneous locking devices
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C3/00—Fastening devices with bolts moving pivotally or rotatively
    • E05C3/02—Fastening devices with bolts moving pivotally or rotatively without latching action
    • E05C3/04—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt
    • E05C3/041—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt rotating about an axis perpendicular to the surface on which the fastener is mounted
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
    • H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
    • H02B1/042—Mounting on perforated supports by means of screws or locking members
    • 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
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/02—Arrangements of circuit components or wiring on supporting structure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
    • H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
    • H02B1/052—Mounting on rails
    • H02B1/0526—Mounting on rails locking or releasing devices actuated from the front face of the apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Clamps And Clips (AREA)

Abstract

The fixing mechanism holds equipment covers (2) down on a base-plate (1) and applies pressure on the electrical contacts. A steel rod (8) passes from the top of the cover to the bottom and has a fastening mechanism (12) at its lower end. The cover is also provided with notched catches (3) which fit over the rims of punched openings in the base-plate. The fastening mechanism consists of a section of resilient wire (12) bent through two right angles and fixed into holes drilled in the rod to form a rectangular loop, and leaving one end (16) projecting from the far side of the rod. When the rod is rotated through 90 degrees, by a triangle-shaped key, mating with the shaped upper end (11), the loop turns and bears against the edge of a recess in the base-plate in a cam-type action. This action forces the base-plate laterally w.r.t. the cover and brings pressure to bear on the electrical pins and the notched catches. The projecting wire end also rotates under the edge of the base-plate, providing extra anchoring.

Description

La présente invention concerne une came de verrouillage, notamment
pour mettre en place un appareillage mobile de type modulaire sur un châssis fixe, comprenant-une tige de commande métallique traversant de part en part
l'appareillage et qui est pourvue à une extrémité d'une prise pour une clé de manoeuvre et à l'autre extrémité d'un profil de came excentrique destiné à coopérer avec une ouverture du châssis afin de procurer un déplacement de l'appareillage par rapport au châssis qui assure en même temps son verrouillage sur ledit châssis par l'intermédiaire de pattes d'accrochage.The present invention relates to a locking cam, in particular
to set up a mobile device of the modular type on a fixed frame, comprising a metal control rod passing right through
the apparatus and which is provided at one end with a socket for an operating key and at the other end with an eccentric cam profile intended to cooperate with an opening of the chassis in order to provide movement of the apparatus by relative to the chassis which at the same time ensures its locking on said chassis by means of hooking lugs.

Ce genre de matériel est en particulier utilisé dans le domaine ferroviaire qui nécessite comme on le sait une très grande sécurité de fonctionnement. This type of equipment is used in particular in the railway sector which, as is known, requires very high operating safety.

La came de verrouillage a ainsi principalement pour rôle de provoquer un certain uépiacement de l'appareillage mobile par rapport au châssis fixe, afin de fournir une pression d'appui élevée entre les éléments de-contact électrique portés respectivement par l'appareillage mobile et par le châssis fixe.The main purpose of the locking cam is thus to cause a certain displacement of the mobile equipment with respect to the fixed frame, in order to provide a high contact pressure between the electrical contact elements carried respectively by the mobile equipment and by the fixed frame.

A l'heure actuelle, le profil excentrique de la came de verrouillage est obtenu par moulage, matriçage, forgeage ou surmoulage de l'extrémité correspondante de la tige de commande. Malheureusement, toutes ces opérations sont coûteuses et nécessitent pour la plupart une reprise sur machine pour parvenir aux cotes spécifiées, ce qui grève exagérément le coût de l'appareillage luimême. At present, the eccentric profile of the locking cam is obtained by molding, stamping, forging or overmolding of the corresponding end of the control rod. Unfortunately, all of these operations are costly and most require rework on the machine to achieve the specified dimensions, which unduly burdens the cost of the equipment itself.

On a également pensé a réaliser le profil de came au moyen d'un surmoulage en matière plastique peu onéreuse. Une telle réalisation ne peut toutefois supporter les couples élevés qui sont parfois demandés-à ces cames, l'appareillage mobile pouvant comporter jusqu'à six modules associés. We have also thought of making the cam profile by means of an inexpensive plastic overmolding. Such an embodiment cannot, however, withstand the high torques which are sometimes required of these cams, the mobile equipment being able to comprise up to six associated modules.

La présente invention a pour but principal de remédier à ces inconvénients et, pour ce faire, elle a pour objet une came de verrouillage du type susmentionné qui se caractérise essentiellement en ce que le profil de came est constitué par une boucle en fil d'acier venant se fixer dans deux perçages réalisés à cet effet dans la tige de commande. The main object of the present invention is to remedy these drawbacks and, to do this, it relates to a locking cam of the aforementioned type which is essentially characterized in that the cam profile is constituted by a steel wire loop. coming to be fixed in two holes made for this purpose in the control rod.

Une telle came est facile à réaliser à un faible coût et présente néanmoins une bonne tenue mécanique, largement suffisante pour les applications envisagées. Such a cam is easy to produce at a low cost and nevertheless has good mechanical strength, largely sufficient for the applications envisaged.

De préférence, les deux branches de la boucle sont immobilisées dans les perçages de la tige par un écrasement local du métal constituant ladite boucle, ce qui est également peu coûteux à réaliser tout en étant très efficace. Preferably, the two branches of the loop are immobilized in the bores of the rod by local crushing of the metal constituting said loop, which is also inexpensive to produce while being very effective.

De plus, l'une des branches de la boucle, prévue plus longue, traverse entièrement le perçage correspondant de la tige et fait saillie de l'autre côté pour venir s'accrocher sous le châssis dans la position de verrouillage. Les différentes fonctions de la came sont ainsi directement assurées par la seule boucle en fil d'acier rapportée sur la tige. In addition, one of the branches of the loop, which is provided for longer, passes entirely through the corresponding bore in the rod and projects from the other side to hang under the chassis in the locked position. The different functions of the cam are thus directly ensured by the single steel wire loop attached to the rod.

Une forme d'exécution de l'invention est décrite ci-après a titre d'exemple, en référence aux dessins annexés dans lesquels
- la figure 1 est une vue simplifiée en perspective d'un appareillage mobile équipé d'une came conforme à l'invention, en position sur un châssis
- la figure 2 est une vue de dessus du châssis
- la figure 3 est une vue de-dessous de l'appareillage mobile ;
- la figure 4 est une vue en élévation avec arrachement de 1' appareillage mobile verrouillé sur le châssis
- la figure 5 est une vue en coupe suivant la ligne V-V de la figure 4 ;
- la figure 6 est une vue en coupe suivant la ligne VI-VI de la figure 5
- la figure 7 est une vue en élévation a plus grande échelle de la came de verrouill'age ; et
- la figure 8 est une vue de dessus de cette came.An embodiment of the invention is described below by way of example, with reference to the accompanying drawings in which
- Figure 1 is a simplified perspective view of a mobile device equipped with a cam according to the invention, in position on a chassis
- Figure 2 is a top view of the chassis
- Figure 3 is a bottom view of the mobile equipment;
- Figure 4 is an elevational view with cutaway of one movable device locked on the chassis
- Figure 5 is a sectional view along line VV of Figure 4;
- Figure 6 is a sectional view along line VI-VI of Figure 5
- Figure 7 is an elevational view on a larger scale of the locking cam; and
- Figure 8 is a top view of this cam.

En se référant à la figure 1, on peut voir une portion d'un châssis fixe 1 sur lequel est monté un appareillage électrique mobile 2 de type modulaire, constitué par exemple par un relais de sécurité.. De façon connue en soi, cet appareillage mobile comporte à sa partie inférieure, ainsi qu'on peut le voir sur les figures suivantes, deux pattes d'accrochage 3 coopérant avec deux fentes latérales 4 du châssis 1, ainsi qu'un certain nombre de lames de contact électrique 5 destinées à venir prendre appui sur des lames de contact correspondantes 6 prévues sur ledit châssis
L'appareillage mobile 2 est en outre équipé d'une came de verrouillage, désignée dans son ensemble par la référence 7 et qui est représentée en détail sur les figures 7 et 8.Cette came est essentiellement constituée par une tige de commande cylindrique 8, en acier étiré inoxydable, traversant de part en part le corps de l'appareillage et qui est maintenue en translation à l'intérieur de celui-ci par un circlips 9 venant se loger dans une gorge 10 aménagée sur la périphérie de ladite tige.Referring to Figure 1, we can see a portion of a fixed frame 1 on which is mounted a mobile electrical apparatus 2 of modular type, constituted for example by a safety relay. In a manner known per se, this apparatus mobile has at its lower part, as can be seen in the following figures, two hooking lugs 3 cooperating with two lateral slots 4 of the chassis 1, as well as a certain number of electrical contact blades 5 intended to come take support on corresponding contact blades 6 provided on said chassis
The mobile equipment 2 is further equipped with a locking cam, generally designated by the reference 7 and which is shown in detail in FIGS. 7 and 8. This cam is essentially constituted by a cylindrical control rod 8, made of drawn stainless steel, passing right through the body of the apparatus and which is held in translation inside of it by a circlip 9 coming to be housed in a groove 10 arranged on the periphery of said rod.

L'extrémité supérieure de la tige 8 fait saillie à l'extérieur de l'appareillage mobile 2 et comporte une empreinte triangulaire 11 constituant une prise pour une cléaumoyen de laquelle la came 7 peut être manoeuvrée en rotation. A sa partie inférieure, la tige 8 est pourvue d'un profil de came excentrique 12 conçu pour coopérer avec une ouverture 13 spécialement aménagée à cet effet dans le châssis 1. En faisant tourner la came 7 d'environ 900 au moyen de la clé prévue à cet usage, on provoque un certain déplacement de 1' ap- pareillage mobile par rapport au châssis fixe.Ce déplacement relatif a essen tiellement pour but d'assurer une pression d'appui élevée entre les lames de contact 5 et 6, tout en entraînant le verrouillage effectif de l'appareillage sur le châssis par l'intermédiaire des deux pattes d'accrochage 3, comme illustré sur la figure 6. The upper end of the rod 8 protrudes outside of the movable device 2 and has a triangular imprint 11 constituting a socket for a wrench with which the cam 7 can be rotated. At its lower part, the rod 8 is provided with an eccentric cam profile 12 designed to cooperate with an opening 13 specially fitted for this purpose in the chassis 1. By rotating the cam 7 by approximately 900 by means of the key provided for this purpose, a certain displacement of the movable apparatus is caused relative to the fixed chassis. This relative displacement is essentially intended to ensure a high contact pressure between the contact blades 5 and 6, while by causing the effective locking of the apparatus on the chassis by means of the two attachment tabs 3, as illustrated in FIG. 6.

Afin de visualiser la position de la came correspondant au verrouillage effectif de l'appareillage sur le châssis, 1' empreinte -triangulaire 11 est pourvue d'un repère constitué ici par une rainure 14. Cette rainure s'étend sur toute la hauteur de l'empreinte, de façon à être visible frontalement, et elle est réalisée par frappe après matriçage de ladite empreinte. In order to view the position of the cam corresponding to the effective locking of the apparatus on the chassis, the triangular imprint 11 is provided with a mark constituted here by a groove 14. This groove extends over the entire height of the 'imprint, so as to be visible frontally, and it is produced by striking after stamping said imprint.

Conformément à l'invention, le profil de came 12 est constitué très simplement par une boucle 15 en fil d'acier inoxydable, par exemple de 3 mm de diamètre, plié à 900 et qui vient se fixer dans deux perçages réalisés à cet effet dans la partie inférieure de la tige de commande 8. De plus, la branche inférieure de la boucle 15 est prévue plus longue et traverse entièrement le perçage correspondant de la tige en faisant saillie de l'autre côté, comme représenté en 16. Cette partie saillante 16 de la boucle 15 vient prendre appui sous le châssis 1 dans la position de verrouillage de la came 7, comme représenté sur la figure 4, et constitue ainsi un élément d'accrochage supplémentaire complétant l'action des pattes 3. According to the invention, the cam profile 12 is very simply constituted by a loop 15 made of stainless steel wire, for example 3 mm in diameter, folded at 900 and which is fixed in two holes made for this purpose in the lower part of the control rod 8. In addition, the lower branch of the loop 15 is provided longer and passes entirely through the corresponding bore of the rod by projecting from the other side, as shown in 16. This projecting part 16 of the loop 15 comes to bear under the chassis 1 in the locking position of the cam 7, as shown in FIG. 4, and thus constitutes an additional hooking element completing the action of the tabs 3.

Selon une autre particularité de l'invention, les deux branches de la boucle 15 sont immobilisées dans les perçages correspondants de la tige8, grâce à un simple écrasement local du métal constituant ladite boucle, comme représenté en 17 sur la figure 7. According to another feature of the invention, the two branches of the loop 15 are immobilized in the corresponding holes in the rod 8, by means of a simple local crushing of the metal constituting said loop, as shown at 17 in FIG. 7.

La came 7 ainsi constituée est donc en définitive de fabrication peu coûteuse, tout en étant d'une grande solidité.
On notera par ailleurs qu'en fin de course, cette came coopère de façon connue en soi avec deux empreintes 18 ménagées sur le fond de 1' appareil- lage mobile 2. Sous l'action du circlips 9, la branche supérieure de la boucle 15 vient prendre appui élastiquement dans ces deux empreintes, procurant ainsi à la came deux positions stables en rotation correspondant respectivement à la position de verrouillage et a la position de déverrouillage. The cam 7 thus formed is therefore ultimately inexpensive to manufacture, while being very solid.
It will also be noted that at the end of the race, this cam cooperates in a manner known per se with two indentations 18 formed on the bottom of the movable device 2. Under the action of the circlips 9, the upper branch of the loop 15 comes to bear elastically in these two cavities, thus providing the cam with two stable positions in rotation corresponding respectively to the locking position and to the unlocking position.

Claims (3)

REVENDICATIONS 1. Came de verrouillage (7), notamment pour mettre en place un appareillage mobile (2) de type modulaire sur un châssis fixe (1), comprenant une tige de commande métallique (8) traversant de part en part l'appareillage (2) et qui est pourvue à une extrémité d'une prise (11) pour une clé de manoeuvre et à l'autre extrémité d'un profil de came excentrique (12) destine a coopérer avec une ouverture (13) du châssis (1) afin de procurer un déplacement de l'appareillage (2) par rapport au châssis (1) qui assure en même temps son verrouillage sur ledit châssis par l'intermédiaire de pattes d'accrochage (3), caractérisée en ce que le profil de came (12) est constitué par une boucle en fil d'acier (15) venant se fixer dans deux perçages réalisés à cet effet dans la tige de commande (8). 1. Locking cam (7), in particular for installing a movable device (2) of modular type on a fixed frame (1), comprising a metal control rod (8) passing right through the device (2 ) and which is provided at one end with a socket (11) for an operating key and at the other end with an eccentric cam profile (12) intended to cooperate with an opening (13) of the chassis (1) in order to provide a displacement of the apparatus (2) relative to the chassis (1) which at the same time ensures its locking on said chassis by means of hooking lugs (3), characterized in that the cam profile (12) is constituted by a steel wire loop (15) which is fixed in two holes made for this purpose in the control rod (8). 2. Came de verrouillage selon la revendication 1, caractérisée en ce que les deux branches de la boucle sont immobilisées dans les perçages de la tige (8) par un écrasement local (17) du métal constituant ladite boucle (15). 2. Locking cam according to claim 1, characterized in that the two branches of the loop are immobilized in the holes of the rod (8) by a local crushing (17) of the metal constituting said loop (15). 3. Came de verrouillage selon la revendication 1 ou 2, caractérisé en ce que l'une des branches de la boucle (15), prévue plus longue, traverse entièrement perçage correspondant de la tige (8) et fait saillie (16) de l'autre côté pour venir s'accrocher sous le châssis (1) dans îa-position de verrouillage.  3. Locking cam according to claim 1 or 2, characterized in that one of the branches of the loop (15), provided longer, crosses entirely corresponding drilling of the rod (8) and protrudes (16) from the 'other side to come hook under the frame (1) in the locking position.
FR8118713A 1981-10-05 1981-10-05 Cam-action fastening mechanism for electrical equipment covers - has rotatable rod with wire loop forcing base sideways and increasing force between electrical pins Granted FR2514224A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8118713A FR2514224A1 (en) 1981-10-05 1981-10-05 Cam-action fastening mechanism for electrical equipment covers - has rotatable rod with wire loop forcing base sideways and increasing force between electrical pins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8118713A FR2514224A1 (en) 1981-10-05 1981-10-05 Cam-action fastening mechanism for electrical equipment covers - has rotatable rod with wire loop forcing base sideways and increasing force between electrical pins

Publications (2)

Publication Number Publication Date
FR2514224A1 true FR2514224A1 (en) 1983-04-08
FR2514224B1 FR2514224B1 (en) 1983-12-30

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FR8118713A Granted FR2514224A1 (en) 1981-10-05 1981-10-05 Cam-action fastening mechanism for electrical equipment covers - has rotatable rod with wire loop forcing base sideways and increasing force between electrical pins

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262084A2 (en) * 1986-09-25 1988-03-30 Paul & Siedler GmbH & Co KG Electrotechnical component
DE8707526U1 (en) * 1987-05-22 1988-05-11 Paul & Siedler Gmbh & Co Kg, 1000 Berlin Device with a holder in the form of a recess for receiving an electrical component
WO2011103990A1 (en) * 2010-02-26 2011-09-01 Sagemcom Energy & Telecom Sas Housing with rear face intended to be fixed to a support

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1572503A (en) * 1968-05-13 1969-06-27
US3480311A (en) * 1968-06-05 1969-11-25 Entron Inc Quick-release fastener means
US3649059A (en) * 1969-11-28 1972-03-14 John W Davidson Reinforcement clip

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1572503A (en) * 1968-05-13 1969-06-27
US3480311A (en) * 1968-06-05 1969-11-25 Entron Inc Quick-release fastener means
US3649059A (en) * 1969-11-28 1972-03-14 John W Davidson Reinforcement clip

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262084A2 (en) * 1986-09-25 1988-03-30 Paul & Siedler GmbH & Co KG Electrotechnical component
EP0262084A3 (en) * 1986-09-25 1989-03-15 Paul & Siedler GmbH & Co KG Electrotechnical component
DE8707526U1 (en) * 1987-05-22 1988-05-11 Paul & Siedler Gmbh & Co Kg, 1000 Berlin Device with a holder in the form of a recess for receiving an electrical component
WO2011103990A1 (en) * 2010-02-26 2011-09-01 Sagemcom Energy & Telecom Sas Housing with rear face intended to be fixed to a support
FR2956874A1 (en) * 2010-02-26 2011-09-02 Sagem Comm EQUIPMENT FOR FIXING ON A SUPPORT
CN102782509A (en) * 2010-02-26 2012-11-14 萨基姆通讯能源及电信联合股份公司 Housing with rear face intended to be fixed to a support
US9074394B2 (en) 2010-02-26 2015-07-07 Sagemcom Energy & Telecom Sas Housing with rear face intended to be fixed to a support

Also Published As

Publication number Publication date
FR2514224B1 (en) 1983-12-30

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