EP4490375A1 - Schloss für ein kraftfahrzeug - Google Patents
Schloss für ein kraftfahrzeugInfo
- Publication number
- EP4490375A1 EP4490375A1 EP23706989.3A EP23706989A EP4490375A1 EP 4490375 A1 EP4490375 A1 EP 4490375A1 EP 23706989 A EP23706989 A EP 23706989A EP 4490375 A1 EP4490375 A1 EP 4490375A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lock
- plastic film
- housing
- motor vehicle
- moisture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- 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 lock for a motor vehicle having a locking device with a rotary latch and at least one pawl, the rotary latch being lockable in at least one locking position by means of the pawl, a lock housing with at least one housing cover, a circuit board arranged inside the lock housing, wherein the circuit board is arranged in a drying room that is at least separated from the locking mechanism.
- Locks for motor vehicles are used where movable components on the motor vehicle, such as doors, flaps, covers and/or sliding doors, are held in position. must be secured.
- the locks have the primary task of holding the movable component securely in its position even during extreme situations and thus protecting the operator or user of the motor vehicle from injuries.
- Such locks are also used in areas that are subject to environmental influences and can therefore come into contact with moisture, dust and/or other environmental influences.
- the lock In addition to the pure security function of holding the movable component, the lock is now taking on more and more additional tasks.
- the lock can also contain electronics that are particularly susceptible to moisture. The Electronics can be used, for example, to control a motor arranged in the motor vehicle lock and to supply it with appropriate electrical power, or switching means can be contained in the motor vehicle lock, with the switching means being able to query positions of functional components in the motor vehicle lock, for example.
- a lock for a motor vehicle which offers protection against external influences such as dust, moisture or manipulation.
- a lock has a lock housing and a housing cover for the lock housing, with a circumferential slot remaining between the lock housing and the cover through which moisture can penetrate into the lock.
- it is proposed to wrap the lock at least partially several times with an adhesive film in order to reliably and permanently protect the lock from external influences.
- the motor vehicle lock can be divided into a dry area and a wet area.
- a lock is known, for example, from EP 2 754 799 Al.
- the circuit board and the other electronic components are arranged in a moisture-tight manner between a cover cap and a lock lid.
- the motor vehicle lock In addition to the influence of direct moisture, the motor vehicle lock is also subject to strong temperature fluctuations. Motor vehicle locksmiths must cover temperature ranges from -40 ° C to + 80 ° C in order to work properly in all climate zones function .
- temperature influences can have an influence on the air humidity and, particularly in the case of strong temperature fluctuations, moisture can escape from the air, so that the electronic components can be affected by moisture.
- an actuator has become known in which pressure differences occur inside the actuator due to the movement of the actuating means.
- the actuator can also be arranged in the wet area of a motor vehicle, so that the internal components, as well as the actuator, must be tightly sealed. So that these pressure differences can be equalized and at the same time no moisture can get into the interior of the actuator, it is proposed in the publication to provide a ventilation hole which is impermeable to moisture and at the same time permeable to air.
- a membrane is inserted into the ventilation hole, through which pressure equalization can take place, but which is also made of a semi-permeable plastic material that prevents the penetration of moisture.
- a lock for a lock for a motor vehicle comprising a lock with a rotary latch and at least one pawl, a lock housing with at least one housing cover, a circuit board arranged in an interior of the lock housing, the circuit board being arranged in a drying room separated from the lock is .
- the electronics can be protected from moisture.
- motor vehicle mechanics are subject to extreme temperature fluctuations or must at least ensure consistent functionality at all times in the temperature ranges mentioned. It can also happen that large temperature jumps occur if, for example, a heavily heated motor vehicle is cooled down immediately and significantly.
- the strong temperature fluctuations can lead to negative pressures forming inside the motor vehicle lock, through which moisture or moisture can get into the motor vehicle lock and/or be drawn into it.
- a complete locking of a drying room in the motor vehicle lock can only be guaranteed to a limited extent, since a mechanism and/or electrical control lines or electrical components are connected to the locking mechanism and/or mechanisms for operating the locking mechanism. This is where the invention comes in.
- the invention is based on the technical problem of further developing a motor vehicle lock of the type mentioned in such a way that the electronic and/or electrical components and in particular a circuit board arranged in the motor vehicle lock can be protected from moisture penetration.
- a lock for a motor vehicle having a locking mechanism with a rotary latch and at least one pawl, the rotary latch being lockable in at least one locking position by means of the pawl, a lock housing with at least one Housing cover, a circuit board arranged inside the lock housing, the circuit board being arranged in a drying space that is at least separated from the locking mechanism and the drying space being sealable with a flexible sealing element, in particular a plastic film.
- a plastic film to seal the drying room, temperature differences can be addressed in an advantageous manner. If the plastic film covers the conductor track and/or electrical components, the plastic film can compensate for pressure differences due to its flexibility.
- the sealing element or The plastic film covers the electrical and electronic components and is firmly connected to the lock housing all around. Pressure differences in the lock housing can be reduced by flexible adjustment of the sealing element or the plastic film, must be balanced.
- a lock for a motor vehicle in the context of the invention, this includes all locking systems that are used to hold a movable component in the motor vehicle. These locking systems have a locking mechanism with a rotary latch and at least one pawl, the rotary latch being able to be brought into engagement with a lock holder and the pawl locking the rotary latch in at least one Can hold locking position.
- Such a lock can be used, for example, in a side door, a flap, hood and/or sliding door, just to name examples of the use of the motor vehicle lock according to the invention.
- the motor vehicle lock is used in a side door, for example, two locking positions are required in the locking mechanism.
- the locking mechanism When closing the side door, the locking mechanism first moves into a pre-locking position and then into a main locking position for complete closing.
- the rotary latch can be secured in the locking position by means of a pawl or a pawl and a blocking or locking lever, depending on whether a closing or opening moment occurs in the locking mechanism.
- the locking mechanism is mounted on a metal lock case in the motor vehicle lock and can also be secured in the axle mounts by means of a reinforcement plate.
- the lock has a lock housing with at least one housing cover.
- a cover cap can be located in the lock, particularly in the case where there are weather-sensitive components in the motor vehicle lock.
- This cover cap then has the task of forming a wet area and a dry area in the motor vehicle lock. This makes it possible to arrange the moisture- or moisture-sensitive components separately in the motor vehicle lock and to provide additional security in the motor vehicle lock.
- moisture-sensitive components are: Example electronic components, a circuit board or an electric motor. These components arranged inside the lock housing are particularly sensitive to moisture, as moisture interference can impair the functionality of these components.
- the circuit board is arranged in a drying room that is at least separated from the locking mechanism.
- the drying room is characterized by the fact that at least no direct moisture can penetrate into the drying room.
- the drying room can be formed by the lock housing in interaction with the housing cover and a shape of the lock housing and/or a cover cap as an intermediate layer.
- the circuit board and/or other electrical components are therefore in an insulated and/or sealed dry room or Arranged in the dry area of the motor vehicle lock and connected there via an electrical component carrier and / or a connection plug and / or control lines to, for example, a control of the motor vehicle lock.
- the high temperature fluctuations between -40 ° C and + 80 ° C that occur in the motor vehicle lock mean that humidity can escape from the air and that strong differences in pressure can arise in the different temperature ranges, so that moisture diffusion and / or a Moisture can penetrate seals, which in turn could lead to moisture getting into the area of the electronic components.
- the use of the sealing element, or the plastic film according to the invention prevents the different pressures resulting from the temperature differences from leading to moisture penetrating into the drying room.
- the elastic sealing element can compensate for the pressure differences and thus prevent air and/or moisture from being drawn into the drying room due to air pressure.
- sealing element in the sense of the invention, this primarily means a plastic film.
- alternative sealing elements are also conceivable, such as a metal foil, a component made from a rubber-elastic plastic.
- the sealing element is able to accommodate a pressure difference flexibly or elastic at the same time.
- the plastic film can be connected at least in some areas to a support surface of the housing cover.
- the plastic film can be arranged as a waterproof and pressure-compensating film between the circuit board and the housing cover of the lock housing. This makes it possible to create a seal in the direction of the housing cover.
- the housing cover and lock housing are usually connected and screwed together using circumferential seals. clipped. This type of seal cannot guarantee absolute tightness in all cases. These include manufacturing and assembly reasons as well as environmental influences.
- the can Plastic film can be arranged at least as far in the area of the contact surface of the housing cover as the housing cover encloses the electronic components.
- the plastic film is arranged at least in some areas between the housing cover and the lock housing.
- the circuit board or the at least one electronic component can be arranged between the housing cover and the lock housing and/or a cover cap.
- an intermediate area between the housing cover and the lock housing and/or the housing cover and the cover cap forms the dry area intended for the electrical components. If the plastic film is now arranged between these components of the lock housing, the drying area can provide additional protection against moisture penetrating into the drying room.
- the plastic film can also be arranged in areas on the housing cover, lock housing and/or a cover cap.
- the plastic film can be connected to the lock housing and/or a cover cap in a fixed, in particular non-detachable, circumferential manner, so that a drying space formed by the lock housing and/or the cover cap and the plastic film can be formed.
- the drying room is additionally sealed by the plastic film and prevents moisture and/or moisture from penetrating the drying room.
- the plastic film also protects against dust or other contamination that can occur in the lock, such as fats or oils, although at least there is no dust can have such a damaging effect on the functionality of the electronic components.
- the plastic film is permanently connected to the housing or housing components.
- a laser beam process can be used for this purpose. Similar processes that enable a material connection can of course also be used.
- a laser beam process offers the advantage of good automation in series production.
- a cohesive connection such as gluing, is used to permanently connect the plastic film to the lock housing.
- the plastic film can therefore be connected to the lock housing by the permanent connection and at the same time be fixed to the lock housing by another housing part.
- the plastic film can advantageously be designed to be elastic.
- the plastic film can adapt to the environmental conditions thanks to its flexibility or elasticity. For example, if the motor vehicle becomes very hot, for example due to solar radiation, the air inside the motor vehicle lock expands. The expansion of the air can be absorbed elastically by the plastic film. If the motor vehicle cools down significantly and the air contracts again, the change in volume can be absorbed by the elasticity of the plastic film. In particular, pressure differences can be compensated for, which can, for example, prevent the diffusion of moist air.
- the plastic film can also be designed to be wave-shaped. Through at least some areas Forming the plastic film in a wave shape can provide additional greater mobility of the plastic film above the circuit board. This also reduces the risk of cracks forming if the plastic film is stretched by temperature differences. The plastic film therefore prevents pressure differences in the drying room, and in particular negative pressures in the drying room, from allowing moisture to penetrate. supports .
- an advantageous embodiment variant of the invention can again be achieved.
- Moisture can escape through openings in the lock.
- temperature compensation can take place through an opening in the lock, so that even when operating under extreme loads, such as extreme heat or extreme cold, temperature compensation can take place within a corresponding period of time.
- the plastic film protects the drying room and the electronic and/or electrical components.
- the housing opening can be closed by means of a membrane, in particular by means of a semi-permeable membrane. It is therefore possible to create a construction space, for example, above the electronic components, whereby the construction space above the plastic film can be closed by a housing cover. For example, there is a housing shell into which electronic components are inserted, and the electronic components are covered with the plastic film.
- the plastic film there is then an installation space which is closed by means of the housing cover and a semi-permeable membrane is arranged in the housing cover.
- the semi-permeable membrane can be pressure equalized and thus compensate for the installation space with regard to temperature fluctuations in relation to the volume.
- the temperature and pressure-related changes in the installation space above the plastic film can be compensated for through the membrane, with the plastic film adapting elastically and/or deformably to the pressure differences or temperature differences.
- the volume of the drying space below the film is always larger than a volume between the plastic film and the housing cover.
- the housing cover encloses or covers the plastic film in such a way that protection for the plastic film is provided.
- the installation space above the plastic film serves to equalize the pressure, with the housing cover having a protective function for the
- the plastic film glued and/or attached using a remelting process is sufficient under normal operating conditions to protect the electrics or electronics from penetrating water and/or moisture and/or lubricants.
- the plastic film can adapt elastically or flexibly to the pressure changes.
- the air in the installation space or drying room which may cool down due to the water, can cause an additional suction effect.
- the purpose of the plastic film is to provide a compensation volume, to compensate for the water that penetrates into the motor vehicle lock due to the increased water pressure and to keep moisture away from the electronics. Due to the structure according to the invention and the The use of the plastic film improves the function of the electrical system or Electronics are also guaranteed in a submerged vehicle and the electrically provided functions in the motor vehicle lock, such as door opening, can still be guaranteed.
- the construction of the motor vehicle lock according to the invention can ensure the security and in particular the longevity of the motor vehicle lock.
- Figure 1 shows a three-dimensional view of a motor vehicle lock designed according to the invention with a membrane in the housing cover, and
- Figure 2 shows a section along the line II-II according to Figure 1 through the motor vehicle lock according to Figure 1.
- a motor vehicle lock 1 is shown in a three-dimensional view in FIG. You can see the lock housing 2 and a device mounted on the lock housing. house cover 3 . A membrane 4 is arranged in the housing cover 3 to equalize the pressure in the motor vehicle lock 1.
- the housing cover 3 is shown transparently, so that the printed circuit board 5 arranged below the housing cover 3 can be seen.
- Electronic components 6, 7 are attached to the circuit board 5 and an electric motor 8 is electrically connected to the circuit board 5.
- the electrics or Electronics 5, 6, 7, 8 in the motor vehicle lock 1 are connected to the on-board electronics of the motor vehicle via a plug 9 on the housing 2.
- Additional capacitive components 10 are also arranged under the housing cover 3. Below the housing cover 3 there is a drying room 11 in which the circuit board and the electronic or electrical components 5, 6, 7, 8, 10 are arranged.
- the membrane 4 is arranged in the housing cover 3, so that the motor vehicle lock 1 can be vented via the membrane 4 and thus dehumidified.
- a seal is arranged all around the edge 12 of the motor vehicle lock 1 and the housing cover is attached to the lock housing 2 by means of screws 13.
- FIG. 2 shows a section through the motor vehicle lock 1 in the area of the membrane 4 along the line II-II from FIG.
- the membrane 4 is in an opening
- the circuit board 5 is arranged in the dry area 11 of the motor vehicle lock 1.
- the drying room 11 can be delimited by a cover cap 15, so that the dry area 11 can be separated from the wet area 16 by means of the cover cap 15.
- the membrane 4 is received in an opening 14 of the lock housing cover 3 and held in a sealing manner. If temperature fluctuations and/or leaks cause the air present in an interior 17 to heat up, the pressure can be equalized through the membrane 4 in the direction of arrow P.
- the membrane 4 is permeable to air in the direction of arrow P, but impermeable to moisture. Moisture hitting the membrane 4 , which is symbolized by the arrow PI, is pushed back by the membrane 4 or not allowed through, so that no moisture can penetrate through the membrane.
- the membrane 4 is designed to be air-permeable in the direction of arrow P2.
- the membrane 4 itself is constructed in two layers, with a semi-permeable plastic layer 19 being arranged on the top side, that is to say on the surrounding side 18, the plastic layer 19 being supported and held on a carrier material 20.
- the inventive structure of the motor vehicle lock with a membrane for pressure equalization can advantageously prevent the formation of condensate inside 17 and in particular in a drying room 11. This particularly improves the longevity of electronic locks.
- the plastic film 21 is shown above the circuit board 5.
- the plastic film 21 separates the drying space 21 from the interior 17, which defines an installation space between the plastic film 21 and the housing cover 3.
- the plastic film 21 is arranged between the housing cover 3 and the lock housing 2 and can be connected to the lock housing 2 all around, for example by means of fusion welding.
- the plastic film 21 completely insulates the drying room from the interior 17. Pressure differences between the interior 17 and the environment 18 can be compensated for by the plastic film 21. Likewise, pressure differences between the interior 17 and the drying room 11 can be compensated for by the plastic film 21.
- a waveform 22 can be seen in the plastic film 21, which additionally increases the elasticity or deformability of the plastic film 21.
- the printed circuit board 5 and the other electronic or electrical components 6, 7, 8 can thus be efficiently protected against environmental influences and/or pollutants and can function reliably and for a long time even under extreme conditions.
Landscapes
- Lock And Its Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022105517.5A DE102022105517A1 (de) | 2022-03-09 | 2022-03-09 | Schloss für ein Kraftfahrzeug |
| PCT/DE2023/100115 WO2023169624A1 (de) | 2022-03-09 | 2023-02-13 | Schloss für ein kraftfahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4490375A1 true EP4490375A1 (de) | 2025-01-15 |
Family
ID=85380781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23706989.3A Withdrawn EP4490375A1 (de) | 2022-03-09 | 2023-02-13 | Schloss für ein kraftfahrzeug |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250198207A1 (de) |
| EP (1) | EP4490375A1 (de) |
| DE (1) | DE102022105517A1 (de) |
| WO (1) | WO2023169624A1 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10259465A1 (de) | 2001-12-29 | 2003-07-10 | Kiekert Ag | Stellantrieb |
| DE202005015588U1 (de) | 2005-09-30 | 2005-12-08 | Kiekert Ag | Komponententräger zur Aufnahme von elektrischen/elektronischen Bauelementen in insbesondere Kraftfahrzeugtürschlössern |
| DE102006034923A1 (de) * | 2006-07-28 | 2008-01-31 | Jungheinrich Ag | Gehäuse für eine Steuerung |
| DE102009027415A1 (de) | 2009-07-01 | 2011-01-05 | Kiekert Ag | Verfahren für das Abdecken eines Kraftzeugschlosses nebst Schloss |
| JP6105887B2 (ja) * | 2012-09-28 | 2017-03-29 | 日立オートモティブシステムズ株式会社 | 電子制御装置 |
| EP2754799B1 (de) | 2012-12-21 | 2017-03-08 | Magna Closures SpA | Elektrischer Fahrzeugverschluss |
| DE102019115445A1 (de) * | 2019-06-06 | 2020-12-10 | Brose Schließsysteme GmbH & Co. Kommanditgesellschaft | Kraftfahrzeugschloss |
| EP4006273B1 (de) * | 2019-07-31 | 2023-10-11 | Mitsui Kinzoku ACT Corporation | Türverriegelungsvorrichtung |
| DE102021119652A1 (de) | 2021-07-28 | 2023-02-02 | Kiekert Aktiengesellschaft | Schloss für ein Kraftfahrzeug |
-
2022
- 2022-03-09 DE DE102022105517.5A patent/DE102022105517A1/de active Pending
-
2023
- 2023-02-13 US US18/840,545 patent/US20250198207A1/en active Pending
- 2023-02-13 EP EP23706989.3A patent/EP4490375A1/de not_active Withdrawn
- 2023-02-13 WO PCT/DE2023/100115 patent/WO2023169624A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022105517A1 (de) | 2023-09-14 |
| US20250198207A1 (en) | 2025-06-19 |
| WO2023169624A1 (de) | 2023-09-14 |
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