WO2023036367A1 - Boîtier en plastique pour applications automobiles - Google Patents

Boîtier en plastique pour applications automobiles Download PDF

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Publication number
WO2023036367A1
WO2023036367A1 PCT/DE2022/100628 DE2022100628W WO2023036367A1 WO 2023036367 A1 WO2023036367 A1 WO 2023036367A1 DE 2022100628 W DE2022100628 W DE 2022100628W WO 2023036367 A1 WO2023036367 A1 WO 2023036367A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
seal
housing part
plastic
housing according
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.)
Ceased
Application number
PCT/DE2022/100628
Other languages
German (de)
English (en)
Inventor
Andreas Ziganki
Thorsten Bendel
Ömer INAN
Andreas Schmitz
Michael Scholz
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.)
Kiekert AG
Original Assignee
Kiekert AG
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 Kiekert AG filed Critical Kiekert AG
Publication of WO2023036367A1 publication Critical patent/WO2023036367A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
    • E05B85/02—Lock casings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/16—Use of special materials for parts of locks
    • E05B15/1635—Use of special materials for parts of locks of plastics materials
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/0004—Lock assembling or manufacturing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B77/00—Vehicle locks characterised by special functions or purposes
    • E05B77/34—Protection against weather or dirt, e.g. against water ingress

Definitions

  • the invention relates to a plastic housing for automotive applications, in particular a motor vehicle door lock housing, with at least one preferably circumferential seal made of a sealing material that swells on contact with water, in particular a thermoplastic elastomer, on a first housing part.
  • Plastic housings for automotive applications and in particular motor vehicle door lock housings are usually exposed to different environmental conditions. These include not only changing temperatures and dust, but also and especially moisture, which can often enter the interior of a motor vehicle in some areas. This applies in particular to motor vehicle door lock housings, which are necessarily open in the area of an entry mouth in order to allow a locking bolt, which is usually fixed to the body, to be inserted into a locking mechanism accommodated in the lock housing. For this reason, there are already various and diverse approaches to designing such plastic housings and in particular motor vehicle door lock housings as tightly as possible.
  • motor vehicle door lock housings or, in general, plastic housings for automotive applications usually have one or more electric motors, including gears, inside them. Since, for cost and weight reasons, such gears often rely entirely or at least partially on plastic gears, dirt or penetrating moisture are detrimental to functionality. This is especially true on long time scales.
  • JPH06346645 A proceeds in a comparable manner.
  • a seal made of an elastomeric material including a so-called thermoplastic elastomer (TPE).
  • TPE thermoplastic elastomer
  • EP 0 032 773 B1 relates to a lock with a safety device which comprises at least one sensor element.
  • the sensing element is equipped with a liquid-absorbing corpus cavernosum which pushes a latch to a release position when the corpus cavernosum swells by absorbing liquid.
  • the invention is based on the technical problem of further developing such a plastic housing for automotive applications and in particular a motor vehicle door lock housing of the structure described above in such a way that the sealing effect is improved again compared to the prior art, in particular over long time scales.
  • a generic plastic housing for automotive applications within the scope of the invention is characterized in that the seal is U-shaped or V-shaped in cross section and that a pressure ridge that dips into the seal is provided on the other second housing part.
  • the invention is initially based on the assumption that the plastic housing in question is designed in at least two parts with the first housing part and the second housing part.
  • the first housing part is usually a housing shell.
  • the second housing part is typically designed as a housing cover that closes the housing shell. In connection with the seal between the housing shell and the housing cover, a hermetic seal of the plastic housing realized in this way can consequently be implemented according to the invention.
  • such a motor vehicle door lock housing usually accommodates electric motors, transmission parts, actuating elements, sensors, etc. in its interior and can be hermetically sealed in connection with the seal to the outside, both against dust and also in particular moisture, which otherwise impairs the function and particularly the permanent mode of operation of the electrical elements located inside, such as electric motors, sensors, control units, etc. over the entire service life of the product.
  • other plastic housings for automotive applications can also be designed accordingly as motor vehicle door lock housings.
  • plastic housings are used, for example and without limitation, in connection with window regulators, mirror drives, locks for loading flaps or fuel filler flaps, headlight adjustments, etc., and are comparable to motor vehicle door lock housings, particularly exposed to moisture (and of course also dust and changing temperatures).
  • the tight closure of such plastic housings and preferably motor vehicle door lock housings is of particular importance, also and in particular over the entire service life of the motor vehicle.
  • the seal is usually formed onto the housing shell as the first housing part.
  • the housing shell is closed with the help of the housing cover as the second housing part.
  • the housing shell is usually made by plastic injection molding and the seal can be molded onto it.
  • plastic injection molding there is also the possibility of producing the housing shell on the one hand and the seal on the other hand in a joint injection molding process. Because in both cases plastics and in particular thermoplastics are used. The only difference is that the seal is usually made of thermoplastic elastomer, whereas a thermoplastic, non-elastomeric plastic is regularly used for the housing shell.
  • the seal is generally arranged around the edge on a sealing surface of the first housing part.
  • the sealing surface of the first housing part generally has an upstanding stop edge.
  • the pressure web is also generally arranged around the edge on a counter-sealing surface of the second housing part. Consequently, when the plastic housing is closed, the sealing surface and the counter-sealing surface are pressed against one another.
  • Screws or clip connections ensure that the first housing part or the housing shell and the second housing part or the housing cover are permanently braced against one another and closed with a sealing effect.
  • the counter-sealing surface of the second housing part or the housing cover has a protruding stop flange which rests against the stop edge of the first housing part when the second housing part or the housing cover is in the installed state.
  • the design is advantageously such that the pressure bar dips into the seal with its entire cross-sectional surface and viewed over its entire length. In this way, the invention ensures that the pressure ridge advantageously applies a permanent force to the seal.
  • the overall design is such that when the housing shell is closed, the housing cover with the pressure web dips into the seal on the housing shell over its entire cross-sectional surface and over its entire length.
  • the seal on the housing shell is U-shaped or V-shaped in cross section and is also generally formed around the edge of the sealing surface.
  • thermoplastic elastomers in particular are designed to be hydrophilic. This means that such polymers, such as polymethyl methacrylate (PMMA), among others, tend to absorb water due to their polar character. It is therefore a question of sealing materials that swell when in contact with water and, moreover, are generally particularly soft.
  • the pressure web on the housing cover can advantageously dip into the (soft) seal or the sealing material used at this point with its entire cross-sectional surface and viewed over its entire length. This also and especially applies when the sealing material in question swells through contact with water. Since, according to the invention, the sealing material in question is subjected to a permanent force or pressing force over its entire length and cross-section with the aid of the pressure web, a perfect sealing effect between the housing shell and the housing cover is already given when the sealing material is in a dry state and is observed. This sealing effect is then even reinforced if water should nevertheless penetrate.
  • the sealing effect which is reinforced by the penetrating water, is precisely limited to the areas that allow water to penetrate at all. Consequently, the plastic housing according to the invention and in particular the motor vehicle door lock housing has an improved sealing effect in areas that, due to a possible leak, allow water to penetrate all the way to the seal, so that a kind of "self-sealing" is observed in leaky areas “Self-repairing” trained. This is where the main advantages can be seen.
  • FIG. 1 shows the plastic housing for automotive applications in the form of a motor vehicle door lock housing in an overview
  • FIG. 1 shows a section along the line AA through the object according to Fig. 1.
  • a plastic housing for automotive applications is shown in the figures.
  • the plastic housing as shown in FIG. 1 is a motor vehicle door lock housing.
  • this is designed in two parts with a first housing part or a housing shell 1 and a second housing part or a housing cover 2 .
  • the first housing part or housing shell 1 accommodates an electric motor 3 in its interior by way of example and not by way of limitation.
  • an actuating lever 5 only indicated in FIG. 1, is acted upon.
  • the electric motor 3 works via its output-side output shaft on a drive wheel 4 , which is rotated and thereby acts on the actuating lever 5 .
  • a locking lever of the motor vehicle lock which is not illustrated in any more detail, can be controlled with the aid of the actuating lever 5 .
  • the actuating lever 5 can also work directly on a locking mechanism, not shown, consisting of a rotary latch and a pawl, in order to close or open it.
  • any other lock functions that can be actuated by an electric motor are of course also conceivable, which can be activated with the aid of the actuating lever 5 .
  • seal 6 that is circumferential according to the exemplary embodiment and can be seen in particular in the sectional view of FIG. 2.
  • the seal 6 is made of a sealing material that swells when it comes into contact with water.
  • a thermoplastic elastomer TPE
  • TPE thermoplastic elastomer
  • PMMA polymethyl methacrylate
  • the sectional illustration along the line AA in FIG. 2 shows that the seal 6 is U-shaped or V-shaped in cross section.
  • a plunging into the seal 6 pressure ridge 7 is provided on which other second housing part or the housing cover 2 is provided.
  • Both the seal 6 and the pressure bar 7 are each designed to be completely circumferential and closed over their length.
  • the seal 6 is molded onto the housing shell 1 .
  • the housing shell 1 is made by plastic injection molding. The same applies to the housing cover 2.
  • the seal 6 is molded onto the housing shell 1. It is possible to produce the housing shell 1 and the seal 6 in a joint injection molding process.
  • the seal 6 is arranged around the edge on a sealing surface 8 of the first housing part or the housing shell 1, which can be seen in particular in FIG.
  • the pressure web 7 is also provided around the edge on a corresponding counter-sealing surface 9 of the second housing part or the housing cover 2 .
  • the sealing surface 8 of the housing shell 1 has, by way of example and not necessarily, a raised stop edge 10.
  • the counter-sealing surface 9 of the second housing part or the housing cover 2 is equipped with a corresponding stop flange 11 that stands up and rests against the stop edge 10 in the assembled state. That is, when the housing cover 2 is mounted on the housing shell 1, the stop edge 10 and the stop flange 11 are in contact with one another.
  • the pressure ridge 7 on the second housing part or the housing cover 2 dips with its entire cross-sectional surface and viewed over its entire length into the seal 6 in the assembled state, as can be understood from FIG. 2 .
  • the pressure web 7 ensures that the seal 6 is subjected to a permanent force when the housing cover 2 is mounted on the housing shell 1 .
  • the required sealing effect between the housing cover 2 on the one hand and the housing shell 1 on the other hand is already provided and implemented according to the invention. Should there nevertheless be a possible leak and, for example, moisture ingress between the stop edge 10 and stop flange 11, the moisture within the scope of the invention means that the sealing material defining the seal 6, in particular made of the thermoplastic elastomer, thereby differs from the previously described reasons.
  • the swelling behavior of the sealing material or the seal 6 has the result that any leaks are closed (again) at exactly the point observed by the swelling sealing material of the seal made from them, and the plastic housing according to the invention experiences a “self-closing” as a result.
  • the seal 6 is embodied on the inside with respect to the housing shell 1 and the housing cover 2 . In principle, however, the seal 6 can also be embodied on the outside. An external seal 6 could also be applied from the outside, for example as foam.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Lock And Its Accessories (AREA)

Abstract

L'invention concerne un boîtier en plastique pour des applications automobiles, en particulier un boîtier de serrure de portière de véhicule à moteur. Le boîtier en matière plastique présente au moins un joint d'étanchéité (6), de préférence un joint tout autour, constitué d'un matériau de joint qui gonfle après contact avec de l'eau, en particulier d'un matériau de joint fait d'un élastomère thermoplastique (TPE), sur une première partie de boîtier (1). Selon l'invention, le joint (6) est en forme de U ou de V en section transversale. En outre, un élément exerçant une pression (7) qui vient s'appuyer sur le joint (6) est disposé sur la seconde partie de boîtier (2).
PCT/DE2022/100628 2021-09-10 2022-08-22 Boîtier en plastique pour applications automobiles Ceased WO2023036367A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021123442.5A DE102021123442A1 (de) 2021-09-10 2021-09-10 Kunststoffgehäuse für automobile Anwendungen
DE102021123442.5 2021-09-10

Publications (1)

Publication Number Publication Date
WO2023036367A1 true WO2023036367A1 (fr) 2023-03-16

Family

ID=83149107

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2022/100628 Ceased WO2023036367A1 (fr) 2021-09-10 2022-08-22 Boîtier en plastique pour applications automobiles

Country Status (2)

Country Link
DE (1) DE102021123442A1 (fr)
WO (1) WO2023036367A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032773B1 (fr) 1980-01-18 1984-07-11 José Bron Serrure
EP0940241A2 (fr) 1998-03-02 1999-09-08 Schneegans GmbH Procédé de fabrication d'un élément de base avec un joint d'étanchéité formé en un seul tenant avec cet élément, et un boítier de serrure fabriqué par un tel procédé
WO2005089190A2 (fr) 2004-03-12 2005-09-29 General Motors Corporation Ensembles d'etancheite a base de matiere active
FR2998604A1 (fr) * 2012-11-27 2014-05-30 Inteva Products France Sas Carter d'actionneur de serrure pour ouvrant de vehicule, procede de realisation d'etancheite
DE102016102835A1 (de) * 2016-02-18 2017-08-24 Kiekert Ag Kraftfahrzeugtürschloss
DE102016109245A1 (de) * 2016-05-19 2017-11-23 Kiekert Ag Gehäuse für kraftfahrzeugtechnische anwendungen
CN208280740U (zh) * 2018-04-01 2018-12-25 黎罗根 一种软件密码锁的防水外壳

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06346645A (ja) 1993-06-10 1994-12-20 Aisin Seiki Co Ltd 操作装置
DE102013102340A1 (de) 2013-03-08 2014-09-11 Valeo Wischersysteme Gmbh Gehäuse für einen Scheibenwischermotor, Verfahren zum Herstellen eines Gehäuses für einen Scheibenwischer und Scheibenwischermotor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032773B1 (fr) 1980-01-18 1984-07-11 José Bron Serrure
EP0940241A2 (fr) 1998-03-02 1999-09-08 Schneegans GmbH Procédé de fabrication d'un élément de base avec un joint d'étanchéité formé en un seul tenant avec cet élément, et un boítier de serrure fabriqué par un tel procédé
WO2005089190A2 (fr) 2004-03-12 2005-09-29 General Motors Corporation Ensembles d'etancheite a base de matiere active
FR2998604A1 (fr) * 2012-11-27 2014-05-30 Inteva Products France Sas Carter d'actionneur de serrure pour ouvrant de vehicule, procede de realisation d'etancheite
DE102016102835A1 (de) * 2016-02-18 2017-08-24 Kiekert Ag Kraftfahrzeugtürschloss
DE102016109245A1 (de) * 2016-05-19 2017-11-23 Kiekert Ag Gehäuse für kraftfahrzeugtechnische anwendungen
CN208280740U (zh) * 2018-04-01 2018-12-25 黎罗根 一种软件密码锁的防水外壳

Also Published As

Publication number Publication date
DE102021123442A1 (de) 2023-03-16

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