This application claims the priority of German Patent Application, Serial No. 10 2011 120 188.6, filed Dec. 5, 2011, pursuant to 35 U.S.C. 119(a)-(d), the disclosure of which is incorporated herein by reference.
The invention relates to an emergency release device for a vehicle trunk of a vehicle.
The following discussion of related art is provided to assist the reader in understanding the advantages of the invention, and is not to be construed as an admission that this related art is prior art to this invention.
With an emergency release device such as disclosed in DE 10 2006 012 062 A1, a person who is trapped in a front side trunk of a vehicle can free herself by actuating an emergency release device for release of the front hood. An emergency release system is for example mandated according to a US provision FMVSS 401 for the vehicle market in the United State of America.
The known emergency release device according to DE 10 2008 012 062 A1 relates to a locking device for a front hood of a motor vehicle with a rotary latch which interacts with a lid side locking arm, which rotary latch is securely held in a locked position by means of a ratchet and with a arrestor hook which can be brought in engagement with a catch element after moving the ratchet in an open position, through which arrestor hook the hood can be held in a holding position, wherein the arrestor hook can be moved from the holding position into an open position in which the lid can be completely opened.
In this known locking device, the rotary latch and the arrestor hook are configured as separate parts, so that the ratchet of the rotary latch and the arrestor hook can be successively actuated via a common Bowden cable.
With this known emergency release device it is supposed to be possible to easily also actuate the arrestor hook via the Bowden cable, with which the ratchet of the rotary latch is moved in to a releasing open position.
For this, the strand of the Bowden cable is connected with the ratchet and its sheath with the arrestor hook of the trap device, wherein the sheath of the Bowden cable is held fixed in position on the arrestor hook, while its strand which is connected to the ratchet is moved relative to the sheath or the arrestor hook. After the ratchet is moved into its open position by the movement of the strand the sheath can in a second step be moved relative to the strand and according a movement of the arrestor hook into its open position results.
Further, a locking device which is formed by an electromagnet is provided in this known emergency release device, with which the actuation of the arrestor hook can be prevented in dependence on the driving speed of the motor vehicle.
It would be desirable and advantageous to provide an improved emergency release device of the aforementioned type.
According to one aspect of the present invention, an emergency release device for a trunk of a vehicle, includes a locking device, an arrestor device limiting an opening movement of the trunk, wherein the arrestor device includes an arrestor hook for reversing said limiting, an emergency actuation device arranged in the trunk and being operatively connected to the arrestor device and the locking device, wherein the emergency actuation device when actuated successively opens the locking device and releases the arrestor device, an actuation device, and a coupling module including a coupling housing, and first and second coupling elements shiftably supported in the coupling housing, wherein the first coupling element operatively couples the emergency actuation device to the arrestor device, wherein the second coupling element operatively couples the actuation device to the locking device, wherein during a first stroke of the first coupling element caused by an actuation of the emergency actuation device, the first and second coupling elements are releasably coupled to each other, wherein the first stroke causes the second coupling element to open the locking device, and is an idle stroke in relation to the arrestor device, and wherein in response to a second stroke, caused by the actuation of the emergency actuation device and extending past the first stroke, the first and second coupling elements are released from each other, and the first coupling element releases the arrestor device.
In this solution according to the invention, a sequential opening of the locking device of the trunk and the release of the arrestor device also occurs according to the known emergency release device according to DE 10 2006 012 A1, however, the actuating forces which have to be exerted on the emergency release device are significantly smaller because after a first stroke, which only leads to the opening of the trunk lock, the second coupling element is de-coupled and thus only a force for the release of the arrestor device is required for the further actuation.
According to another advantageous feature of the invention, the coupling housing further includes a holding magnet, wherein upon completion of the second stroke an anchor plate of the holding magnet is connected with the first coupling element and rests against the holding magnet. This achieves a latching engagement of the arrestor device in the open state, thereby preventing a reengagement for example of an arrestor hook with an associated catch element.
According to another advantageous feature of the invention, second coupling element has a pivotally supported coupling lever which is spring loaded in a direction of the first coupling element. This represents a simple mechanical solution for such a coupling between the two coupling elements. For this purpose, the first coupling element preferably has a detent nose for coupling with the second coupling element, with the end of the coupling lever engaging behind the detent nose, wherein the coupling housing is configured with a stop which at the beginning of the second stroke of the first coupling element causes a pivoting of the coupling lever out of its engagement behind the detent nose of the first coupling element.
According to another advantageous feature of the invention, an actuation of the actuation device causes a shifting of the second coupling element in the coupling housing independent of the first coupling element for opening the locking device.
This is advantageously achieved according to a refinement in that the shifting of the second coupling element causes a pivoting back of the coupling lever for de coupling from the first coupling element in that the end of the coupling lever slides along the first coupling element and the stop of the coupling housing.
According to another advantageous feature of the invention, the first coupling element is connected by non positive engagement with the arrestor device via a pulling-force transmitting pulling means, preferably a Bowden cable.
According to another advantageous feature of the invention, the first coupling element is pre-tensioned in the coupling housing by a spring element in a direction of a pulling force defined by the emergency release device.
Particularly advantageous is when in an embodiment of the invention the holding magnet is configured as electromagnet and is supplied with current in dependence on the speed of the vehicle, in order to cause a falling off of the anchor plate from the holding magnet and to cause a shifting of the first coupling element into its starting position as a result of the pretension of the spring element. This allows bringing an arrestor hook again into its catch position when at released arrestor device the vehicle starts driving and exceeds a predetermined speed.
In addition, for reasons of safety it is also provided according to a refinement of the invention, to configure the coupling housing with an electrically actuatable locking element which in dependence on the speed of the vehicle prevents a shifting of the first coupling element past the first stroke.
According to another advantageous feature of the invention, the first coupling element is connected by non positive engagement with the arrestor device via a pulling-force transmitting pulling means, and the second coupling element is connected by non positive engagement with the actuation device via a pulling-force transmitting pulling means
According to another advantageous feature of the invention, the second coupling element is configured for non engaging movement in relation to the pulling-force transmitting pulling means by virtue of coupling to the first stroke
According to another advantageous feature of the invention, the second coupling element is connected by non positive engagement with the trunk lock via a pulling-force transmitting pulling means.
As pulling means, a Bowden cable with a pulling grope and a pulley sleeve can be used for the emergency release device according to the invention.
According to another advantageous feature of the invention, for forming the idle stroke, an end of the pulling cable is provided with a cable nipple which is supported in an oblong groove which extends in a pulling direction of the pulling means for shifting along a length which corresponds to an extent of the idle stroke.
Other features and advantages of the present invention will be more readily apparent upon reading the following description of currently preferred exemplified embodiments of the invention with reference to the accompanying drawing, in which:
Throughout all the Figures, same or corresponding elements are generally indicated by same reference numerals. These depicted embodiments are to be understood as illustrative of the invention and not as limiting in any way. It should also be understood that the drawings are not necessarily to scale and that the embodiments are sometimes illustrated by graphic symbols, phantom lines, diagrammatic representations and fragmentary views. In certain instances, details which are not necessary for an understanding of the present invention or which render other details difficult to perceive may have been omitted.
Turning now to the drawing, and in particular to
The construction and the function of such a trunk lock 3 is known which for example consists from a vehicle side lock trap and a hatch side locking part. For opening the trunk lock 3, the lock trap is connected by means of a manually actuatable release device 7 which is arranged in the passenger compartment of the vehicle, as for example shown in
The construction and the function of a arrestor device 4 are also known and are formed for example by a hood-side arrestor hook and a corresponding vehicle-side arrestor element. The arrestor hook engages behind the arrestor element and thereby prevents an opening of the front hood which extends past a small initial opening. In order to remove the movement limitation the arrestor hook is actuatable from outside the trunk via a corresponding mechanic. The transition of the arrestor hook from its opening-limiting position into its open position is for example caused by means of an arrestor hook lever which is connected to the emergency release device 5, as for example described in the previously mentioned DE 10 2006 012 062 A1.
In combination,
For receiving these longitudinal and square shaped coupling elements 20 and 30 in this coupling housing 40 the coupling housing 40 is configured with two longitudinal chambers 41 and 42 which are adjusted to the shape of the coupling elements 20 and 30, in which chambers 41, 42 a coupling element 20 or 30 is supported for shifting in longitudinal direction x.
The first coupling element 20 is connected by none positive engagement to the emergency release device 5 via the pulling rope of the Bowden cable 43 and with its other end connected by none positive engagement to the arrestor device 4 also via the pulling rope of the further Bowden cable 45. With this, the two Bowden cables 43 and 45 together with the first coupling element 20 form a pulling force transmission path between the emergency actuation device 5 and the arrestor device 4. Further, the first coupling element 20 is pre-tensioned in a pulling direction Fz by means of a return spring 24.
The end of the pulling rope of the Bowden cable 43 or 45 is formed by a spherical rope nipple 44 or 46. The rope nipple 44 of the Bowden cable 43 is received by a nipple receptacle 21 of the first coupling element which nipple receptacle is shaped corresponding to the spherical shape of the rope nipple 44 and fixed, while the rope nipple 46 of the Bowden cable 45 is supported in a nipple receptacle 22 of the coupling element 20 which nipple receptacle 22 is configured as longitudinal groove, for shifting in this longitudinal groove over the length of this longitudinal groove. This support of the rope nipple 46 in this longitudinal groove 22, enables an idle stroke by the first coupling element 20 in relation to the arrestor device 4 corresponding to the length of the longitudinal groove 22.
The second coupling element 30 is connected with the actuation device 6 with one of its ends via the pulling cable of the Bowden cable 47, in that a spherical cable nipple 48 of the pulling cable is supported in a nipple receptacle 31 which is configured as oblong groove, for shifting along this oblong groove, wherein the length of this oblong groove 31 essentially corresponds to the length of the oblong groove 22 of the first coupling element 20. The other end of the second coupling element 30 is connected with the trunk lock 3 via the pulling cable of the Bowden cable 49, wherein also in this case, a spherical rope nipple 50 of the end of the pulling rope of this Bowden cable 49 is received by a nipple receptacle 32 which is adapted to the spherical shape of the rope nipple 50, and fixed in this second coupling element 30. The two Bowden cables 47 and 49 together with the second coupling element 30 also form a pulling force transmission path between the actuation device 6 and the trunk lock 3.
The first and second coupling elements 20 and 30 are shown in the coupling module 10 according to
The second coupling element 30 is configured with a coupling lever 33 which is pivotal about a pivot axis 34 and which is pre-tensioned in the direction of the first coupling element 20 by means of a shank spring 36, wherein the pivot axis 34 is arranged so that in the positions shown in
In the following, the function of the first and second coupling elements 20 and 30 when actuating the emergency actuation device 5 and the actuation device 6 is explained.
When actuating the emergency actuation device 5, the pulling force Fz generated thereby is transferred to the first coupling element 20 and due to the coupling with the second coupling element 30 also to the second coupling element 30, whereby the trunk lock 3 is opened. The shift required therefore referred to as first stroke, determines the position of a stop 53 of the coupling housing 40 for the coupling lever 33 of the second coupling element 30. This stop 53 causes the coupling lever 33 which is pre-tensioned by the shank spring 36, to be pivoted out of the detent nose at the end of the first stroke due to a further shifting movement of the first coupling element 20, so that the second coupling element 30 is decoupled from the first coupling element 20 and thus does not carry out any further shifting movements.
During the first stroke of the first coupling element 20 the latter carries out an idle stroke relative to the Bowden cable 45, because the rope nipple 46 of the first coupling element is supported in the oblong groove 22 and therefore moves relative to the first coupling element 20 from an end of the oblong groove 22 as far as an opposing end of the oblong groove 22 and rests against the opposing end, so that a pulling force which is generated in a further sequence of movement is also transferred to the pulling rope of the Bowden cable 45.
As a result, the rope nipple 46 of the Bowden cable 45 is carried along by the first coupling element 20 past the first stroke via a shifting movement of the second stroke of the first coupling element 20 and thereby the movement transferred to a arrestor hook of the arrestor device 4, so that thereby at the end of the second stroke, the opening movement of the front hood of the trunk 2 is enabled.
After the first coupling element 20 has reached its maximal stroke which is formed by the first and second stroke, an anchor plate 55 of a permanent magnet 54, which anchor plate 55 is connected with the first coupling element 20 rests against the permanent magnet 54 (see
The permanent magnet 54 is configured as electromagnet and mounted in the coupling housing with a mounting plate 56; it is capable to hold the anchor plate 55 when not supplied with current. Only a short current pulse is sufficient to repel the anchor plate with the support of the return force of the pre-tensioned return spring 24. This is used to briefly supply this permanent magnet 54 with current in the state of the released arrestor device 4 when the vehicle starts driving and exceeds a predetermined speed for example 5 km/h as required in the US-Provision FMVSS 401. This automatically causes the arrestor device assumes its starting position, in which its arrestor hook limits the opening movement of the front hatch of the vehicle.
For this, sensor signals of rotational speed sensor of the vehicle are provided to the control device 9 and via a data line this permanent magnet 54 controlled.
Further, a stroke magnet 57 which is configured as electromagnet is integrated in the coupling housing 40 together with a ratchet 58 (see
The usual procedure for opening the trunk lock 3 is that the actuation device 6 which is configured as electric lock release, is controlled by the control device 9, by which a corresponding pulling force Fz is transferred to the second coupling element 30 and the Bowden cable 49 and as a result the second coupling element 30 is shifted in the direction of the pulling force Fz. During this movement, the coupling lever 33 is pivoted out of the position in which it rests against the first coupling element 20, because the end 35 of the coupling lever 33 first slides along the first coupling element 20 and then along the stop 53, without influencing the second coupling element 20.
While the invention has been illustrated and described in connection with currently preferred embodiments shown and described in detail, it is not intended to be limited to the details shown since various modifications and structural changes may be made without departing in any way from the spirit of the present invention. The embodiments were chosen and described in order to best explain the principles of the invention and practical application to thereby enable a person skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated.
Number | Date | Country | Kind |
---|---|---|---|
10 2011 120 188 | Dec 2011 | DE | national |
Number | Name | Date | Kind |
---|---|---|---|
3580623 | Peters | May 1971 | A |
3917327 | Plasko | Nov 1975 | A |
4102213 | Smith | Jul 1978 | A |
4331353 | Yazawa | May 1982 | A |
RE31899 | Mochida | May 1985 | E |
4633724 | Mochida | Jan 1987 | A |
4702094 | Peterson | Oct 1987 | A |
4858971 | Haag | Aug 1989 | A |
4869351 | Romano | Sep 1989 | A |
4886307 | Ruckert | Dec 1989 | A |
5293965 | Nagano | Mar 1994 | A |
5348355 | Oyha | Sep 1994 | A |
5517176 | Lavelle | May 1996 | A |
5525963 | Purssey | Jun 1996 | A |
5613716 | Cafferty | Mar 1997 | A |
5614769 | Kuroda | Mar 1997 | A |
5638721 | Lee | Jun 1997 | A |
5829314 | Scura | Nov 1998 | A |
6102454 | Weyerstall | Aug 2000 | A |
6106033 | Ruckert | Aug 2000 | A |
6123372 | Rogers et al. | Sep 2000 | A |
6520560 | Schutt et al. | Feb 2003 | B2 |
6546763 | Pielach | Apr 2003 | B1 |
6779372 | Arlt | Aug 2004 | B2 |
6831376 | Franke et al. | Dec 2004 | B2 |
6879058 | Lorenz et al. | Apr 2005 | B2 |
7063360 | Fukunaga et al. | Jun 2006 | B2 |
7097212 | Willats et al. | Aug 2006 | B2 |
7111878 | Kachouh | Sep 2006 | B2 |
7222459 | Taniyama | May 2007 | B2 |
7243961 | Fukunaga et al. | Jul 2007 | B2 |
7261335 | Schupp | Aug 2007 | B2 |
7261338 | Spurr | Aug 2007 | B2 |
7281748 | Ruhlander et al. | Oct 2007 | B2 |
7360803 | Parent et al. | Apr 2008 | B2 |
7780207 | Gotou et al. | Aug 2010 | B2 |
7823741 | Bridges et al. | Nov 2010 | B2 |
7905523 | Stefanic et al. | Mar 2011 | B2 |
7926858 | Otsuka | Apr 2011 | B2 |
8047584 | Rock | Nov 2011 | B2 |
8061742 | Machida et al. | Nov 2011 | B2 |
8215683 | Drescher et al. | Jul 2012 | B2 |
8303004 | Lee et al. | Nov 2012 | B2 |
8348310 | Vazquez et al. | Jan 2013 | B2 |
8376416 | Arabia et al. | Feb 2013 | B2 |
8382167 | Kargilis | Feb 2013 | B2 |
8382168 | Carabalona et al. | Feb 2013 | B2 |
8454061 | Spurr | Jun 2013 | B2 |
8469409 | Plett | Jun 2013 | B2 |
8573658 | Kim | Nov 2013 | B2 |
8579068 | Farooq | Nov 2013 | B2 |
8590946 | Cumbo et al. | Nov 2013 | B2 |
8657077 | Tsai | Feb 2014 | B2 |
8798858 | Zysk | Aug 2014 | B2 |
8833811 | Ishikawa | Sep 2014 | B2 |
20020000726 | Zintler | Jan 2002 | A1 |
20020000727 | Rass et al. | Jan 2002 | A1 |
20020050720 | Helmer | May 2002 | A1 |
20020074809 | Fisher | Jun 2002 | A1 |
20030080572 | So | May 2003 | A1 |
20050104382 | Schupp | May 2005 | A1 |
20060028029 | Spurr | Feb 2006 | A1 |
20060033346 | Ala | Feb 2006 | A1 |
20070126243 | Papanikolaou | Jun 2007 | A1 |
20070138802 | Stasko | Jun 2007 | A1 |
20070216170 | Drescher et al. | Sep 2007 | A1 |
20070246944 | Sundararajan | Oct 2007 | A1 |
20090108595 | De Vries | Apr 2009 | A1 |
20100032965 | Kargilis et al. | Feb 2010 | A1 |
20110025077 | Meyer et al. | Feb 2011 | A1 |
20110169281 | Bender | Jul 2011 | A1 |
20120019012 | Saito | Jan 2012 | A1 |
20120161453 | Zysk | Jun 2012 | A1 |
20130049403 | Fannon | Feb 2013 | A1 |
20130140831 | Kempel et al. | Jun 2013 | A1 |
20130238187 | Zysk | Sep 2013 | A1 |
20140339834 | Alexander et al. | Nov 2014 | A1 |
Number | Date | Country |
---|---|---|
10224076 | Dec 2003 | DE |
10046189 | Apr 2004 | DE |
103 59 737 | Jul 2005 | DE |
10 2006 012 062 | Sep 2007 | DE |
10 2007 029 679 | Jan 2009 | DE |
10 2007 052 771 | May 2009 | DE |
10 2010 056 413 | Jun 2012 | DE |
1 434 505 | May 1976 | GB |
Entry |
---|
Search report issued by the German Patent Office on Jul. 17, 2012. |
Number | Date | Country | |
---|---|---|---|
20130140831 A1 | Jun 2013 | US |