EP2633602A1 - Sealing plug for ventilation outlet - Google Patents

Sealing plug for ventilation outlet

Info

Publication number
EP2633602A1
EP2633602A1 EP11752219.3A EP11752219A EP2633602A1 EP 2633602 A1 EP2633602 A1 EP 2633602A1 EP 11752219 A EP11752219 A EP 11752219A EP 2633602 A1 EP2633602 A1 EP 2633602A1
Authority
EP
European Patent Office
Prior art keywords
support sleeve
cap
barrel
sealing
membrane
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Withdrawn
Application number
EP11752219.3A
Other languages
German (de)
French (fr)
Inventor
Joel Princet
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.)
Valeo Systemes dEssuyage SAS
Original Assignee
Valeo Systemes dEssuyage SAS
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 Valeo Systemes dEssuyage SAS filed Critical Valeo Systemes dEssuyage SAS
Publication of EP2633602A1 publication Critical patent/EP2633602A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
    • H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0213—Venting apertures; Constructional details thereof
    • H05K5/0216—Venting plugs comprising semi-permeable membranes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
    • H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means

Definitions

  • the present invention relates to a protective cap to ensure the sealing of equipment, including a window wiper motor of a motor vehicle, at a ventilation output of this equipment.
  • a known sealing plug comprises a hydrophobic membrane of Gore-tex® type material and a rubber membrane support, for example made of EPDM.
  • the membrane support is made in the form of a cylindrical or frustoconical sleeve, adapted to be inserted into the barrel, and the membrane is in the form of a disc secured to the inside of the support sleeve, for example by gluing. on an inner peripheral wall of the support sleeve. Once assembled, the membrane allows air to flow in both directions through the membrane, but prevents water from entering the housing. The membrane is itself protected from shocks by its position inside the support sleeve.
  • the wiper motor can be adjusted to congestions related to space, to be positioned in such a way that the ventilation outlet is directed upwards.
  • the water will certainly be prevented from entering the housing due to the presence of the membrane, but will stagnate in the space of the sleeve defined by this sleeve and the membrane portion at the bottom. This can lead to deterioration of the membrane, and hence the effectiveness of the sealing plug.
  • a cap adapted to cap the upper part of the shaft of the ventilation outlet, and to cooperate with the portion of the support sleeve located at above the membrane so as to allow, on the one hand, the maintenance of this cap, and on the other hand, air to circulate between the outside and the inside of the housing, through the membrane.
  • This cap is generally an additional piece, made of plastic material, which is placed on the upper part of the barrel once the support sleeve provided with the membrane have been positioned.
  • the present invention aims to provide a sealing plug of the above type with a reduced number of parts, and therefore a reduced cost of manufacture, and in which the cap is captive.
  • a sealing plug adapted to equip a ventilation outlet of a sealed housing of an electronic equipment, in particular a gear motor for wiper motor of a glass surface of a motor vehicle, the ventilation outlet being formed by a cylindrical or frustoconical shaped barrel integrally molded with the casing, said cap comprising at least one support sleeve adapted to be inserted into the barrel and a cap adapted to cap the part upper of said barrel, said cap comprising a male insert adapted to be inserted in force into the support sleeve and to cooperate with the support sleeve to allow air to circulate between the inside and the outside of the casing through said barrel, characterized in that said support sleeve and said cap are part of a single piece having a flexible tongue connecting the support sleeve and the cap, the flexible tongue as adapted to fold to allow the introduction of the cap on the support sleeve.
  • the connecting tongue may consist of a straight strip connecting the support sleeve and the cap in a direction parallel to the diameters of the cap and the support sleeve.
  • the cap may comprise a flat upper portion orthogonally extended by a rim or peripheral skirt, and the straight strip connects the lower portion of the skirt or peripheral rim and the upper portion of the support sleeve.
  • said single piece is preferably made of rubber.
  • the cap may further comprise a hydrophobic membrane, in particular Gore-tex®, in the form of a disc held inside said support sleeve, perpendicular to the longitudinal axis of said support sleeve.
  • a hydrophobic membrane in particular Gore-tex®, in the form of a disc held inside said support sleeve, perpendicular to the longitudinal axis of said support sleeve.
  • the membrane rests on an inner annular wall integrally molded with the support sleeve, and can be held by gluing on said inner annular wall.
  • FIG. 1 illustrates a sealing plug according to the invention, in a semi-mounted position on a drum forming a ventilation outlet of a housing;
  • FIG. 1 illustrates the sealing plug of Figure 1, in operational position
  • FIG. 3 is a cross-sectional view of the sealing plug of FIG.
  • the sealing plug is intended to equ iper a ventilation outlet 1 of a sealed housing 2 of a motor gearbox for wiper motor of a glass surface of a motor vehicle .
  • the invention can be used for any equipment comprising a sealed housing with a ventilation outlet formed by a cylindrical or frustoconical shaped barrel molded with the housing.
  • the sealing plug conventionally comprises a support sleeve
  • the outer shell of the ma nchon su pport 3 has a complementary shape of the barrel 1 to accommodate it, typically a cylindrical or frustoconical shape.
  • one or more annular protuberances 30 integrally molded are advantageously provided on the outer casing to, firstly, facilitate the introduction of the support sleeve 3 by force insertion inside. of the drum 1, and secondly, to ensure a good retention of the support sleeve 3 in the barrel 1.
  • An annular portion 20 of the casing 2, internal and coaxial with the barrel 1, advantageously defines a stop surface on which the lower part the support sleeve comes into abutment, to limit the depression of the support sleeve 3 inside the barrel 1.
  • the support sleeve 3 is preferably placed inside the barrel 1 so that the upper portion 31 of the support sleeve substantially flush with the upper part of the barrel 1.
  • the upper portion 31 also has one or more notches 32 opening both upward and inward of the sleeve, and the role will be explained later. As illustrated in Figure 1, the notches are preferably three in number, regularly spaced an angle of 120 degrees.
  • the sealing plug further comprises a hydrophobic membrane, in particular made of Gore-tex®, in the form of a disc held inside the support sleeve, perpendicular to the longitudinal axis of the support sleeve 3.
  • a hydrophobic membrane in particular made of Gore-tex®, in the form of a disc held inside the support sleeve, perpendicular to the longitudinal axis of the support sleeve 3.
  • the membrane 5 when present, advantageously rests on an inner annular wall 33 integrally molded with the support sleeve. It can be maintained further by gluing on the upper surface of this inner annular wall 33.
  • the cap 4 comprises meanwhile an upper plane portion 40 extended orthogonally by a rim or peripheral skirt 41 intended to surround the upper part of the barrel 1 when the plug is in the operational position ( Figures 2 and 3).
  • the dimensions of the cap are greater than those of the barrel 1 so that the cap can effectively cover the top of the barrel 1 without any contact between the flange 41 and the outer casing of the barrel 1.
  • the cap 4 comprises, at the right of the flat upper part 40 and extending in the same direction as the flange or peripheral skirt 41, a male insert 42 adapted to be inserted into force inside the support sleeve 3.
  • annular protuberances 43 integrally molded with the cap 40 are advantageously provided around the side wall of the male insert 42 to facilitate the introduction of the cap 4 inside the support sleeve 3.
  • a or more cuts 44 are made over the entire ha ute rt 44, these cutouts 44 opening both radially between the insert and the rim or peripheral skirt, and on the lower part of the opposite insert on the surface 40.
  • the number of cuts 44 is the same as the number of notches 32 provided on the upper portion 31 of the support sleeve 3. Each cut 44 comes opposite one of the notches 32 when the plug is in the operational position, to create an internal passageway for air circulation.
  • FIG. 3 is a section along a plane passing through one of the notches 32 and the corresponding cut 44, and bidirectional arrows illustrate the passage of air between the outside and the inside of the housing 2, through the sealing plug. Outside the areas of the notches and cutouts, the cap comes into contact with the upper part of the sleeve, as visible on the right part of FIG.
  • the support sleeve 3 and the cap 4 are part of a single piece comprising a flexible tongue 6 connecting the support sleeve 3 and the cap 4, the flexible tongue being able to fold to allow the implementation cap 4 on the support sleeve 3.
  • a single piece can be simply obtained by molding a single material, for example rubber, which reduces manufacturing costs, and facilitates the mounting of the protective cap in operational position.
  • any risk of loss of the cap 4 in the event of strong vibrations is here suppressed since the cap 4 remains in all cases connected to the support sleeve 3.
  • the connecting tongue 6 is preferably in the form of a straight strip connecting the ma nchon support 3 and the pu puchon 4 in a direction parallel to the diameters of the cap and the support sleeve.
  • the connecting tongue folds on itself when the cap is in the operational position.
  • the straight strip furthermore advantageously connects the lower part of the peripheral skirt or rim 41 and the upper part 31 of the support sleeve 3.
  • the length of the tongue can be calculated as accurately as possible in order to allow the tongue to fold back. without loss of unnecessary material.
  • the protective cap shown in the various figures is only one exemplary embodiment of the invention. Without departing from the scope of the present invention, certain embodiments relating to the cap and the support sleeve can be provided.
  • the periphery of the male insert 42 comes into contact with the support sleeve 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The present invention relates to a sealing plug designed to equip a ventilation outlet of a sealed casing (2) of an electronic equipment item, in particular of a gear reduction unit for a wiper motor intended for wiping a glazed surface of a motor vehicle, the ventilation outlet being formed by a cylindrical or frustoconical barrel (1) integrally moulded with the casing (2), said plug comprising at least one support sleeve (3) designed to be force-fitted into the barrel (1), and a cap (4) designed to cover the upper portion of said barrel (1), said cap (4) comprising a male insert (42) designed to be force-fitted into the support sleeve (3) and to engage with the support sleeve (3) so as to allow the air to circulate between the interior and the exterior of the casing through said barrel (1). According to the invention, the support sleeve (3) and the cap (4) form part of a single component comprising a flexible tongue (6) connecting the support sleeve (3) and the cap (4), the flexible tongue being able to be folded over so as to allow the cap (4) to be placed in position on the support sleeve (3).

Description

BOUCHON D'ETANCHEITE POUR SORTIE DE VENTILATION  SEAL CAP FOR VENTILATION OUTPUT
La présente invention concerne un bouchon de protection pour garantir l'étanchéité d'un équipement, notamment d'un moteur d'essuyage de vitre d'un véhicule automobile, au niveau d'une sortie de ventilation de cet équipement. The present invention relates to a protective cap to ensure the sealing of equipment, including a window wiper motor of a motor vehicle, at a ventilation output of this equipment.
Dans le domaine non limitatif de l'essuyage du pare-brise ou de la lunette arrière d'un véhicule automobile, dans lequel les bras porte-balais sont entraînés par un moteur d'essuyage électrique, il est connu d'équiper le boîtier du motoréducteur compris dans le moteur d'essuyage d'au moins une sortie de ventilation pour absorber les variations de pression atmosphérique entre l'intérieur et l'extérieur du boîtier suite à une élévation en température due au fonctionnement du moteur. C ette sortie de ventilation est généralement constituée par un orifice délimité par un fût cylindrique ou tronconique, en saillie et venu de moulage avec le boîtier, généralement en aluminium .  In the non-limiting field of wiping the windshield or the rear window of a motor vehicle, in which the brush-holding arms are driven by an electric wiper motor, it is known to equip the housing of the gearmotor included in the wiper motor of at least one ventilation outlet for absorbing variations in atmospheric pressure between the inside and the outside of the housing as a result of an increase in temperature due to the operation of the motor. This ventilation outlet is generally constituted by an orifice delimited by a cylindrical or frustoconical barrel, projecting and coming from molding with the housing, generally made of aluminum.
Afin de garantir l'étanchéité du boîtier, tout particulièrement nécessaire dans les cas où le motoréducteur est de type électronique, il est connu d'équiper la sortie de ventilation d'un bouchon d'étanchéité.  In order to guarantee the tightness of the housing, which is particularly necessary in cases where the geared motor is of the electronic type, it is known to equip the ventilation outlet with a sealing plug.
Plusieurs structures d'étanchéité permettant d'empêcher la pénétration d'eau tout en autorisant l'air de circuler au travers de la sortie de ventilation ont déjà été proposées.  Several sealing structures to prevent the ingress of water while allowing air to flow through the vent outlet have already been proposed.
Notamment, un bouchon d'étanchéité connu comporte une membrane hydrophobe en matériau de type Gore-tex® et un support de membrane en caoutchouc, par exemple en EPDM . Le support de membrane est réalisé sous la forme d'un manchon cylindrique ou tronconique, apte à être inséré en force dans le fût, et la membrane est sous forme d'un disque solidarisé à l'intérieur du manchon support, par exemple par collage sur une paroi périphérique interne du manchon support. Une fois l'ensemble monté, la membrane permet à l'air de circuler dans les deux sens au travers de la membrane, mais empêche l'eau de pénétrer à l'intérieur du boîtier. La membrane est elle-même protégée des chocs de par sa position à l'intérieur du manchon support.  In particular, a known sealing plug comprises a hydrophobic membrane of Gore-tex® type material and a rubber membrane support, for example made of EPDM. The membrane support is made in the form of a cylindrical or frustoconical sleeve, adapted to be inserted into the barrel, and the membrane is in the form of a disc secured to the inside of the support sleeve, for example by gluing. on an inner peripheral wall of the support sleeve. Once assembled, the membrane allows air to flow in both directions through the membrane, but prevents water from entering the housing. The membrane is itself protected from shocks by its position inside the support sleeve.
Ce type de bouchon présente une efficacité satisfaisante dans tous les cas où le boîtier est placé de telle sorte que la sortie de ventilation est orientée vers le bas. Cependant, pour certains modèles de véhicules automobiles, le moteur d'essuyage peut être a m en é, su ite à des contra i ntes liées à l'encombrement, à être positionné de telle manière que la sortie de ventilation soit dirigée vers le haut. Dans ce cas, l'eau va certes être empêchée de pénétrer dans le boîtier du fait de la présence de la membrane, mais va stagner dans l'espace du manchon délimité par ce manchon et la membrane partie en partie basse. Cela peut conduire à une détérioration de la membrane, et par suite, de l'efficacité du bouchon d'étanchéité. This type of plug has a satisfactory efficiency in all cases where the housing is placed so that the ventilation outlet is oriented down. However, for certain motor vehicle models, the wiper motor can be adjusted to congestions related to space, to be positioned in such a way that the ventilation outlet is directed upwards. In this case, the water will certainly be prevented from entering the housing due to the presence of the membrane, but will stagnate in the space of the sleeve defined by this sleeve and the membrane portion at the bottom. This can lead to deterioration of the membrane, and hence the effectiveness of the sealing plug.
Pou r pa l l ier cet inconvénient, il a déjà été proposé d'ajouter au bouchon d'étanchéité précédent un capuchon apte à venir coiffer la partie supérieure du fût de la sortie de ventilation, et à coopérer avec la partie du manchon support située au-dessus de la mem brane de façon à permettre d'une part, le maintien de ce capuchon, et d'autre part, à l'air de circuler entre l'extérieur et l'intérieur du boîtier, au travers de la membrane. Ce capuchon est généralement une pièce additionnelle, en matière plastique, que l'on vient placer sur la partie supérieure du fût une fois que le manchon support muni de la membrane ont été positionnés.  To overcome this drawback, it has already been proposed to add to the above sealing cap a cap adapted to cap the upper part of the shaft of the ventilation outlet, and to cooperate with the portion of the support sleeve located at above the membrane so as to allow, on the one hand, the maintenance of this cap, and on the other hand, air to circulate between the outside and the inside of the housing, through the membrane. This cap is generally an additional piece, made of plastic material, which is placed on the upper part of the barrel once the support sleeve provided with the membrane have been positioned.
Dans certains cas où les exigences d'étanchéités sont moindres, on peut prévoir de ne placer que le manchon support et le capuchon, sans mettre de membrane en Gore-tex®.  In certain cases where the sealing requirements are lower, it is possible to place only the support sleeve and the cap, without putting a Gore-tex® membrane.
L'inconvénient pri ncipal de ce type de bouchon d'étanchéité réside dans le fait qu'il est réalisé sous forme de deux (membrane absente), voire trois pièces distinctes à assembler au moment du montage, qui plus est en matériaux distincts. Cette solution n'est donc pas optimisée ni en termes d'achat, ni en terme de processus de fabrication . En outre, le fût de la sortie de ventilation étant venu de moulage du boîtier en aluminium, il est impossible de prévoir des formes particulières sur la paroi externe du fût qui pourraient servir au maintien du capuchon.  The main disadvantage of this type of sealing plug lies in the fact that it is made in the form of two (missing membrane), or three separate parts to be assembled at the time of assembly, which is made of different materials. This solution is not optimized neither in terms of purchase nor in terms of manufacturing process. In addition, the shaft of the ventilation outlet having come from molding the aluminum housing, it is impossible to provide special shapes on the outer wall of the barrel that could be used to hold the cap.
Celui-ci est donc maintenu pas sa seule coopération avec le manchon support, ce qui peut s'avérer être insuffisant compte tenu des vibrations méca n iq ues générées par le moteu r d 'essuyage, ou par l'utilisation du véhicule.  This is therefore not only its cooperation with the support sleeve, which may prove to be insufficient given the mechanical vibrations generated by the wiper motor, or by the use of the vehicle.
La présente invention a pour but de proposer un bouchon d'étanchéité du type précédent avec un nombre réduit de pièces, et par-là même, un coût réduit de fabrication, et dans lequel le capuchon soit imperdable. The present invention aims to provide a sealing plug of the above type with a reduced number of parts, and therefore a reduced cost of manufacture, and in which the cap is captive.
Ce but est atteint selon l'invention qui a pour objet un bouchon d'étanchéité apte à équiper une sortie de ventilation d'un boîtier étanche d'un équipement électronique, notamment d'un motoréducteur pour moteur d'essuyage d'une surface vitrée de véhicule automobile, la sortie de ventilation étant formée par un fût de forme cylindrique ou tronconique venu de moulage avec le boîtier, ledit bouchon comportant au moins un manchon support apte à être inséré en force dans le fût et un capuchon apte à coiffer la partie supérieure dudit fût, ledit capuchon comportant un insert mâle apte à être inséré en force dans le manchon support et à coopérer avec le manchon support pour permettre à l'air de circuler entre l'intérieur et l'extérieur du boîtier au travers dudit fût, caractérisé en ce que ledit manchon support et ledit capuchon font partie d'une pièce unique comportant une languette souple reliant le manchon support et le capuchon, la languette souple étant apte à se replier pour permettre la mise en place du capuchon sur le manchon support.  This object is achieved according to the invention which relates to a sealing plug adapted to equip a ventilation outlet of a sealed housing of an electronic equipment, in particular a gear motor for wiper motor of a glass surface of a motor vehicle, the ventilation outlet being formed by a cylindrical or frustoconical shaped barrel integrally molded with the casing, said cap comprising at least one support sleeve adapted to be inserted into the barrel and a cap adapted to cap the part upper of said barrel, said cap comprising a male insert adapted to be inserted in force into the support sleeve and to cooperate with the support sleeve to allow air to circulate between the inside and the outside of the casing through said barrel, characterized in that said support sleeve and said cap are part of a single piece having a flexible tongue connecting the support sleeve and the cap, the flexible tongue as adapted to fold to allow the introduction of the cap on the support sleeve.
Selon d'autres caractéristiques additionnelles :  According to other additional features:
- la languette de liaison peut être constituée d'une bande rectiligne reliant le manchon support et le capuchon selon une direction parallèle aux diamètres du capuchon et du manchon support.  - The connecting tongue may consist of a straight strip connecting the support sleeve and the cap in a direction parallel to the diameters of the cap and the support sleeve.
- dans ce cas, le capuchon peut comporter une partie supérieure plane prolongée orthogonalement par un rebord ou jupe périphérique, et la bande rectiligne relie la partie inférieure de la jupe ou rebord périphérique et la partie supérieure du manchon support.  - In this case, the cap may comprise a flat upper portion orthogonally extended by a rim or peripheral skirt, and the straight strip connects the lower portion of the skirt or peripheral rim and the upper portion of the support sleeve.
- ladite pièce unique est de préférence en caoutchouc.  said single piece is preferably made of rubber.
- le bouchon peut comporter en outre une membrane hydrophobe, notamment en Gore-tex®, sous forme d'un disque maintenu à l'intérieur dudit manchon support, perpendiculairement à l'axe longitudinal dudit manchon support.  - The cap may further comprise a hydrophobic membrane, in particular Gore-tex®, in the form of a disc held inside said support sleeve, perpendicular to the longitudinal axis of said support sleeve.
- la membrane repose sur une paroi annulaire interne venue de moulage avec le manchon support, et peut être maintenue par collage sur ladite paroi annulaire interne.  - The membrane rests on an inner annular wall integrally molded with the support sleeve, and can be held by gluing on said inner annular wall.
L'invention sera mieux comprise au vu de la description suivante d'un mode de réalisation possible, faite en référence aux figures annexées, dans lesquelles : The invention will be better understood in view of the following description of a possible embodiment, with reference to the appended figures, in which:
- la figure 1 illustre un bouchon d'étanchéité conforme à l'invention, en position semi-montée sur un fût formant sortie de ventilation d'un boîtier;  - Figure 1 illustrates a sealing plug according to the invention, in a semi-mounted position on a drum forming a ventilation outlet of a housing;
- la figure 2 illustre le bouchon d'étanchéité de la figure 1, en position opérationnelle;  - Figure 2 illustrates the sealing plug of Figure 1, in operational position;
- la figure 3 est une vue en coupe transversale du bouchon d'étanchéité de la figure 2.  FIG. 3 is a cross-sectional view of the sealing plug of FIG.
Dans l'exemple d'application qui va suivre, le bouchon d'étanchéité est destiné à équ iper u ne sortie 1 de ventilation d'un boîtier 2 étanche d'un motoréducteur pour moteur d'essuyage d'une surface vitrée de véhicule automobile. Bien entendu, l'invention peut être utilisée pour tout équipement comportant un boîtier étanche avec une sortie de ventilation formée par un fût de forme cylindrique ou tronconique venu de moulage avec le boîtier.  In the following example of application, the sealing plug is intended to equ iper a ventilation outlet 1 of a sealed housing 2 of a motor gearbox for wiper motor of a glass surface of a motor vehicle . Of course, the invention can be used for any equipment comprising a sealed housing with a ventilation outlet formed by a cylindrical or frustoconical shaped barrel molded with the housing.
Le bouchon d'étanchéité comporte classiquement un manchon support The sealing plug conventionally comprises a support sleeve
3, de préférence en caoutchouc, apte à être inséré en force dans le fût 1 dans la position montrée sur les figures 1, 2 ou 3, et un capuchon 4 apte à coiffer la partie supérieure du fût 1 et à coopérer avec le manchon support 3 dans la position opérationnelle du bouchon montrée sur les figures 2 et 3. 3, preferably of rubber, adapted to be inserted into force in the drum 1 in the position shown in Figures 1, 2 or 3, and a cap 4 adapted to cap the upper part of the barrel 1 and to cooperate with the support sleeve 3 in the operative position of the plug shown in Figures 2 and 3.
L'enveloppe externe du ma nchon su pport 3 possède une forme complémentaire du fût 1 destiné à l'accueillir, typiquement une forme cylindrique ou tronconique. Comme visible plus particulièrement sur la figure 3 , une ou plusieurs protubérances annulaires 30 venues de moulage sont avantageusement prévues sur l'enveloppe externe pour, d'une part, faciliter la mise en place du manchon support 3 par insertion en force à l'intérieur du fût 1, et d'autre part, garantir un bon maintien du manchon support 3 dans le fût 1. Une portion annulaire 20 du boîtier 2, interne et coaxiale au fût 1, définit avantageusement une surface d'arrêt sur laquelle la partie inférieure du manchon support vient en butée, pour limiter l'enfoncement du manchon support 3 à l'intérieur du fût 1. Le manchon support 3 est de préférence placé à l'intérieur du fût 1 de telle sorte que la partie supérieure 31 du manchon support affleure sensiblement avec la partie supérieure du fût 1. La partie supérieure 31 comporte également une ou plusieurs encoches 32 débouchant à la fois vers le haut et vers l'intérieur du manchon, et dont le rôle sera explicité ultérieurement. Comme illustré sur la figure 1, les encoches sont de préférence au nombre de trois, régulièrement espacées d'un angle de 120 degrés. The outer shell of the ma nchon su pport 3 has a complementary shape of the barrel 1 to accommodate it, typically a cylindrical or frustoconical shape. As seen more particularly in Figure 3, one or more annular protuberances 30 integrally molded are advantageously provided on the outer casing to, firstly, facilitate the introduction of the support sleeve 3 by force insertion inside. of the drum 1, and secondly, to ensure a good retention of the support sleeve 3 in the barrel 1. An annular portion 20 of the casing 2, internal and coaxial with the barrel 1, advantageously defines a stop surface on which the lower part the support sleeve comes into abutment, to limit the depression of the support sleeve 3 inside the barrel 1. The support sleeve 3 is preferably placed inside the barrel 1 so that the upper portion 31 of the support sleeve substantially flush with the upper part of the barrel 1. The upper portion 31 also has one or more notches 32 opening both upward and inward of the sleeve, and the role will be explained later. As illustrated in Figure 1, the notches are preferably three in number, regularly spaced an angle of 120 degrees.
Da ns les cas où les exigences en éta nchéité sont maximales, le bouchon d'étanchéité comporte en outre une membrane 5 hydrophobe, notamment en Gore-tex®, sous forme d'un disque maintenu à l'intérieur du manchon support, perpendiculairement à l'axe longitudinal du manchon support 3. Comme visible sur la figure 3, la membrane 5, lorsqu'elle est présente, repose avantageusement sur une paroi 33 annulaire interne venue de moulage avec le manchon support. Elle peut être maintenue en outre par collage sur la surface supérieure de cette paroi 33 annulaire interne.  In cases where the maximum requirements are highest, the sealing plug further comprises a hydrophobic membrane, in particular made of Gore-tex®, in the form of a disc held inside the support sleeve, perpendicular to the longitudinal axis of the support sleeve 3. As shown in Figure 3, the membrane 5, when present, advantageously rests on an inner annular wall 33 integrally molded with the support sleeve. It can be maintained further by gluing on the upper surface of this inner annular wall 33.
Le capuchon 4 comporte quant à lui une partie supérieure 40 plane prolongée orthogonalement par un rebord ou jupe périphérique 41 destiné à venir entourer la partie supérieure du fût 1 lorsque le bouchon est en position opérationnelle (figures 2 et 3). Les dimensions du capuchon sont supérieures à celles du fût 1 de manière à ce que le capuchon puisse effectivement recouvrir le haut du fût 1 sans qu'il n'y ait de contact entre le rebord 41 et l'enveloppe externe du fût 1. Par ailleurs, le capuchon 4 comporte, au droit de la partie supérieure plane 40 et s'étendant dans la même direction que le rebord ou jupe périphérique 41, un insert mâle 42 apte à être inséré en force à l'intérieur du manchon support 3. Ici encore, des protubérances annulaires 43 venues de moulage avec le capuchon 40 sont avantageusement prévues autour de la paroi latérale de l'insert mâle 42 pour faciliter la mise en place du capuchon 4 à l'intérieur du manchon support 3. Par ailleurs, une ou plusieurs découpes 44 sont pratiquées su r toute l a ha ute u r de l 'i nse rt 44, ces découpes 44 débouchant à la fois radialement entre l'insert et le rebord ou jupe périphérique, et sur la partie inférieure de l'insert opposée à la surface plane 40. Le nombre de découpes 44 est le même que le nombre d'encoches 32 prévues sur la partie supérieure 31 du manchon support 3. Chaque découpe 44 vient en regard d'une des encoches 32 lorsque le bouchon est en position opérationnelle, de manière à créer un passage interne pour la circulation de l'air. La figure 3 est une coupe selon un plan passant par l'une des encoches 32 et la découpe 44 correspondante, et les flèches bidirectionnelles illustrent le passage de l'air entre l'extérieur et l'intérieur du boîtier 2, au travers du bouchon d'étanchéité. En dehors des zones des encoches et des découpes, le capuchon vient en contact avec la partie supérieure du manchon, comme visible sur la partie droite de la figure 3. The cap 4 comprises meanwhile an upper plane portion 40 extended orthogonally by a rim or peripheral skirt 41 intended to surround the upper part of the barrel 1 when the plug is in the operational position (Figures 2 and 3). The dimensions of the cap are greater than those of the barrel 1 so that the cap can effectively cover the top of the barrel 1 without any contact between the flange 41 and the outer casing of the barrel 1. By elsewhere, the cap 4 comprises, at the right of the flat upper part 40 and extending in the same direction as the flange or peripheral skirt 41, a male insert 42 adapted to be inserted into force inside the support sleeve 3. Again, annular protuberances 43 integrally molded with the cap 40 are advantageously provided around the side wall of the male insert 42 to facilitate the introduction of the cap 4 inside the support sleeve 3. In addition, a or more cuts 44 are made over the entire ha ute rt 44, these cutouts 44 opening both radially between the insert and the rim or peripheral skirt, and on the lower part of the opposite insert on the surface 40. The number of cuts 44 is the same as the number of notches 32 provided on the upper portion 31 of the support sleeve 3. Each cut 44 comes opposite one of the notches 32 when the plug is in the operational position, to create an internal passageway for air circulation. FIG. 3 is a section along a plane passing through one of the notches 32 and the corresponding cut 44, and bidirectional arrows illustrate the passage of air between the outside and the inside of the housing 2, through the sealing plug. Outside the areas of the notches and cutouts, the cap comes into contact with the upper part of the sleeve, as visible on the right part of FIG.
Conformément à l'invention, le manchon support 3 et le capuchon 4 font partie d'une pièce unique comportant une languette souple 6 reliant le manchon support 3 et le capuchon 4, la languette souple étant apte à se replier pour permettre la mise en place du capuchon 4 sur le manchon support 3.  According to the invention, the support sleeve 3 and the cap 4 are part of a single piece comprising a flexible tongue 6 connecting the support sleeve 3 and the cap 4, the flexible tongue being able to fold to allow the implementation cap 4 on the support sleeve 3.
Ainsi, une unique pièce peut être simplement obtenue par moulage en un matériau unique, par exemple en caoutchouc, ce qui réduit les coûts de fabrication, et facilite le montage du bouchon de protection en position opérationnelle. En outre, tout risque de perte du capuchon 4 en cas de fortes vibrations est ici supprimé puisque le capuchon 4 reste dans tous les cas relié au manchon support 3.  Thus, a single piece can be simply obtained by molding a single material, for example rubber, which reduces manufacturing costs, and facilitates the mounting of the protective cap in operational position. In addition, any risk of loss of the cap 4 in the event of strong vibrations is here suppressed since the cap 4 remains in all cases connected to the support sleeve 3.
Comme clairement visible sur la figure 1, la languette de liaison 6 se présente de préférence sous la forme d'une bande rectiligne reliant le ma nchon su pport 3 et le ca puchon 4 selon une direction parallèle aux diamètres du capuchon et du manchon support. Ainsi, la languette de liaison se replie sur elle-même lorsque le bouchon est en position opérationnelle.  As clearly visible in Figure 1, the connecting tongue 6 is preferably in the form of a straight strip connecting the ma nchon suport 3 and the pu puchon 4 in a direction parallel to the diameters of the cap and the support sleeve. Thus, the connecting tongue folds on itself when the cap is in the operational position.
La bande rectiligne relie en outre avantageusement la partie inférieure de la jupe ou rebord périphérique 41 et la partie supérieure 31 du manchon support 3. En conséquence, la longueur de la languette peut être calculée au plus juste, pour permettre à la languette de se replier sans perte de matière inutile.  The straight strip furthermore advantageously connects the lower part of the peripheral skirt or rim 41 and the upper part 31 of the support sleeve 3. As a result, the length of the tongue can be calculated as accurately as possible in order to allow the tongue to fold back. without loss of unnecessary material.
Le bouchon de protection représenté sur les différentes figures n'est qu'un exemple de réalisation possible de l'invention. On peut prévoir, sans départir du cadre de la présente invention, certaines variantes de réalisation relatives au capuchon et au manchon support. Notamment, dans les figures décrites, seule la périphérie de l'insert mâle 42 vient en contact avec le manchon support 3. En variante, on pourrait prévoir des protubérances (non représentées) s'étendant axialement depuis la face inférieure de l'insert mâle 42 vers la paroi annulaire interne, ces protubérances étant aptes à maintenir une partie de la membrane 5, lorsque celle-ci est présente, contre une portion correspondante de la paroi annulaire interne 33 lorsque le capuchon 4 est en place sur le manchon support. On sécurise ainsi le maintien de la membrane. En variante, on peut même s'affranchir du collage préalable de la membrane 5 sur la paroi 33. The protective cap shown in the various figures is only one exemplary embodiment of the invention. Without departing from the scope of the present invention, certain embodiments relating to the cap and the support sleeve can be provided. In particular, in the figures described, only the periphery of the male insert 42 comes into contact with the support sleeve 3. In a variant, it is possible to provide protuberances (not shown) extending axially from the lower face of the male insert. 42 to the inner annular wall, these protuberances being adapted to maintain a portion of the membrane 5, when it is present, against a corresponding portion of the inner annular wall 33 when the cap 4 is in place on the support sleeve. This secures the maintenance of the membrane. In a variant, it is even possible to dispense with the prior bonding of the membrane 5 to the wall 33.

Claims

REVENDICATIONS
1. Bouchon d'étanchéité apte à équiper une sortie de ventilation d'un boîtier (2) étanche d'un équipement électronique, notamment d'un motoréducteur pour moteur d'essuyage d'une surface vitrée de véhicule automobile, la sortie de ventilation étant formée par un fût (1) de forme cylindrique ou tronconique venu de moulage avec le boîtier (2), ledit bouchon comportant au moi ns un manchon support (3) apte à être inséré en force dans le fût (1) et un capuchon (4) apte à coiffer la partie supérieure dudit fût (1), ledit capuchon (4) comportant un insert mâle (42) apte à être inséré en force dans le manchon support (3) et à coopérer avec le manchon support (3) pour permettre à l'air de circuler entre l 'i ntérieu r et l 'extérieu r du boîtier au travers dud it fût ( 1 ), caractérisé en ce que ledit manchon support (3) et ledit capuchon (4) font partie d'u ne pièce unique comportant une languette souple (6) reliant le manchon support (3) et le capuchon (4), la languette souple étant apte à se replier pour permettre la mise en place du capuchon (4) sur le manchon support (3).  1. Sealing cap adapted to equip a ventilation outlet of a housing (2) sealed electronic equipment, including a motor gearbox motor for wiping a glass surface of a motor vehicle, the ventilation outlet being formed by a barrel (1) of cylindrical or frustoconical shape integrally molded with the casing (2), said stopper comprising at least ns a support sleeve (3) adapted to be inserted into the barrel (1) and a cap (4) adapted to cap the upper part of said barrel (1), said cap (4) comprising a male insert (42) adapted to be inserted by force into the support sleeve (3) and to cooperate with the support sleeve (3) to allow air to circulate between the interior and the outside of the housing through the shaft (1), characterized in that said support sleeve (3) and said cap (4) are part of a single piece comprising a flexible tongue (6) connecting the support sleeve (3) and the cap ( 4), the flexible tongue being able to fold to allow the introduction of the cap (4) on the support sleeve (3).
2. Bouchon d'étanchéité selon la revendication 1, caractérisé en ce que la languette de liaison (6) est constituée d'une bande rectiligne reliant le manchon support (3) et le capuchon (4) selon une direction parallèle aux diamètres du capuchon et du manchon support. 2. Sealing cap according to claim 1, characterized in that the connecting tongue (6) consists of a straight strip connecting the support sleeve (3) and the cap (4) in a direction parallel to the diameters of the cap and the support sleeve.
3. Bouchon d'étanchéité selon la revendication 2, caractérisé en ce que le capuchon (4) comporte une partie supérieure (40) plane prolongée orthogonalement par un rebord ou jupe périphérique (41), et en ce que la bande rectiligne (6) relie la partie inférieure de la jupe ou rebord périphérique (41) et la partie supérieure (31) du manchon support (3). Sealing plug according to claim 2, characterized in that the cap (4) has an orthogonally extended upper portion (40) extending axially by a peripheral rim or skirt (41), and that the straight strip (6) connects the lower part of the peripheral skirt or rim (41) and the upper part (31) of the support sleeve (3).
4. Bouchon d'étanchéité selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite pièce unique est en caoutchouc. 4. Sealing cap according to any one of the preceding claims, characterized in that said single piece is rubber.
5. Bouchon d'étanchéité selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte en outre une membrane (5) hydrophobe, notamment en Gore-tex®, sous forme d'un disque maintenu à l'intérieur dudit manchon support (3), perpendiculairement à l'axe longitudinal dudit manchon support (3). 5. Sealing cap according to any one of the preceding claims, characterized in that it further comprises a membrane (5) hydrophobic, in particular Gore-tex®, in the form of a disc maintained inside said support sleeve (3), perpendicular to the longitudinal axis of said support sleeve (3).
6. Bouchon d'étanchéité selon la revendication 5, caractérisé en ce que ladite membrane (5) repose sur une paroi (33) annulaire interne venue de moulage avec le manchon support (30). 6. Sealing cap according to claim 5, characterized in that said membrane (5) rests on an inner annular wall (33) integrally molded with the support sleeve (30).
7. Bouchon d'étanchéité selon la revendication 6, caractérisé en ce que ladite membrane (5) est maintenue par collage sur ladite paroi (33) annulaire interne. 7. Sealing cap according to claim 6, characterized in that said membrane (5) is held by gluing on said inner annular wall (33).
8. Bouchon d'étanchéité selon l'une quelconque des revendications 6 et 7, caractérisé en ce que le capuchon (4) comporte une ou plusieurs protubérances aptes à maintenir une partie de la membrane contre une portion correspondante de ladite paroi (33) annulaire interne lorsque le capuchon (4) est en place sur le manchon support (3). 8. Sealing cap according to any one of claims 6 and 7, characterized in that the cap (4) has one or more protuberances adapted to maintain a portion of the membrane against a corresponding portion of said annular wall (33). internal when the cap (4) is in place on the support sleeve (3).
9. Bouchon d'étanchéité selon l'une quelconque des revendications précédentes, caractérisé en ce que la surface externe du manchon support (3) comporte une ou plusieurs protubérances (30) annulaires pour faciliter la mise en place du manchon support par insertion en force à l'intérieur du fût (1) et le maintien dudit manchon support dans le fût. Sealing plug according to one of the preceding claims, characterized in that the outer surface of the support sleeve (3) has one or more annular protuberances (30) to facilitate insertion of the support sleeve by force insertion. inside the barrel (1) and maintaining said support sleeve in the barrel.
10. Bouchon d'étanchéité selon l'une quelconque des revendications précédentes, caractérisé en ce que la paroi latérale de l'insert mâle (42) comporte des protubérances annulaires (43) venues de moulage avec le capuchon (40) pour faciliter la mise en place du capuchon (4) à l'intérieur du manchon support (3). Sealing plug according to one of the preceding claims, characterized in that the side wall of the male insert (42) has annular protuberances (43) integrally molded with the cap (40) for ease of use. in place of the cap (4) inside the support sleeve (3).
EP11752219.3A 2010-10-25 2011-09-02 Sealing plug for ventilation outlet Withdrawn EP2633602A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1004180A FR2966660B1 (en) 2010-10-25 2010-10-25 SEAL CAP FOR VENTILATION OUTPUT
PCT/EP2011/065225 WO2012055623A1 (en) 2010-10-25 2011-09-02 Sealing plug for ventilation outlet

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EP2633602A1 true EP2633602A1 (en) 2013-09-04

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EP11752219.3A Withdrawn EP2633602A1 (en) 2010-10-25 2011-09-02 Sealing plug for ventilation outlet

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EP (1) EP2633602A1 (en)
FR (1) FR2966660B1 (en)
WO (1) WO2012055623A1 (en)

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
FR2985699B1 (en) * 2012-01-18 2015-02-13 Valeo Systemes Dessuyage DEVICE FOR PROTECTING A BREATHING MEMBRANE, MOTORIZING UNIT AND WIPING SYSTEM PROVIDED WITH SUCH A DEVICE
DE102014106501A1 (en) * 2014-05-08 2015-11-12 AZ Ausrüstung und Zubehör GmbH & Co. KG Ventilation system for vehicle lighting
FR3056848A1 (en) * 2016-09-26 2018-03-30 Valeo Systemes D'essuyage BRUSHLESS DIRECT CURRENT ELECTRIC MOTOR FOR A MOTOR VEHICLE WIPING SYSTEM
FR3084426B1 (en) 2018-07-25 2021-01-15 Akwel TRANSMISSION VENTILATION CAP
DE102019134788A1 (en) * 2019-12-17 2021-06-17 Audi Ag Ventilation arrangement for a vehicle assembly

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USRE25948E (en) * 1962-01-12 1965-12-14 Vented acoustic panel
DE3247112C1 (en) * 1982-12-20 1984-07-19 Schorch GmbH, 4050 Mönchengladbach Electrical machine condensation water outlet closure bung - has separate head and shaft joined via pin
US5522769A (en) * 1994-11-17 1996-06-04 W. L. Gore & Associates, Inc. Gas-permeable, liquid-impermeable vent cover
DE4444643A1 (en) * 1994-12-15 1996-06-20 Teves Gmbh Alfred Electric motor
DE20313070U1 (en) * 2003-08-23 2003-11-06 Zapf Creation Ag Doll with pressure equalization system

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FR2966660A1 (en) 2012-04-27
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