EP2821571B1 - Locking mechanism, opening system and motor vehicle - Google Patents
Locking mechanism, opening system and motor vehicle Download PDFInfo
- Publication number
- EP2821571B1 EP2821571B1 EP13290125.7A EP13290125A EP2821571B1 EP 2821571 B1 EP2821571 B1 EP 2821571B1 EP 13290125 A EP13290125 A EP 13290125A EP 2821571 B1 EP2821571 B1 EP 2821571B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lever
- intended
- link element
- actuation device
- locking mechanism
- 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.)
- Not-in-force
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Classifications
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- 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
- E05B77/02—Vehicle locks characterised by special functions or purposes for accident situations
- E05B77/04—Preventing unwanted lock actuation, e.g. unlatching, at the moment of collision
- E05B77/06—Preventing unwanted lock actuation, e.g. unlatching, at the moment of collision by means of inertial forces
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
- E05B83/16—Locks for luggage compartments, car boot lids or car bonnets
- E05B83/18—Locks for luggage compartments, car boot lids or car bonnets for car boot lids or rear luggage compartments
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B1/00—Knobs or handles for wings; Knobs, handles, or press buttons for locks or latches on wings
- E05B1/0038—Sliding handles, e.g. push buttons
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B13/00—Devices preventing the key or the handle or both from being used
- E05B13/10—Devices preventing the key or the handle or both from being used formed by a lock arranged in the handle
- E05B13/101—Devices preventing the key or the handle or both from being used formed by a lock arranged in the handle for disconnecting the handle
Definitions
- front In this specification, the terms “front,” “frontward,” “back,” “backward,” “up” “upper,” “low,” “lower,” “left,” “right,” and similar such terms are not to be construed as limiting the invention to a particular orientation. Instead, these terms are used only on a relative basis, and with reference to the following directions in the drawing: front-back, up-down and left-right, respectively designated by the pairs of letters: F-B, U-D and L-R.
- the invention relates to locking mechanisms, in particular for a motor vehicle.
- a locking mechanism of the type comprising:
- Document FR 2721645 A1 discloses a lock push button with a bolt, in which the bolt receives an additional pressure imparted by an inertia mass fixed to an anchoring lever in contact with the bolt.
- the lever is fixed to the inertia mass and pivoted about a fixed axle.
- the lever carries an anchoring finger in contact with the bolt.
- the blocking unit is often a latch.
- An advantage of such a mechanism is then to be able to place the latch remotely from the lever actuation device by using a rod, pulled by the lever, to activate the latch.
- the weight prevents unwanted opening of the panel in case of a collision from the front, by forming a counter or balance weight with respect to the lever activation system.
- the lever is not likely to reach its unblocking position in case of a collision from the back.
- the reason being that the restoring portion is pushed by the upper arm of the lever, which moves the lever actuation device towards its front position.
- the inertia of the lever actuation device tends to make the lever actuation device move towards its back position. This backward movement makes up for the pushing of the upper arm of the lever, and helps preventing the lever from reaching its unblocking position.
- the link element is furthermore intended to move between a coupled position in which the pushing portion is able to push the upper arm of the lever and an uncoupled position in which the pushing portion is unable to push the lever
- the lever actuation device further comprises a coupling system intended to move the link element between its coupled position and its uncoupled position
- the restoring element is intended to be pushed by the upper arm of the lever when the lever rotates from its blocking position to its unblocking position, so as to move the lever actuation device from its back position to its front position, whatever the position of the link element - coupled or uncoupled - may be.
- the lever actuation device is intended to move along a second axis.
- the link element is intended to rotate around the second axis in order to move between its coupled position and its uncoupled position.
- the link element comprises a base and a wall circumferential with respect to the second axis and projecting frontward from the base, the circumferential wall is provided with a longitudinal slot and a circumferential slot, the circumferential slot joining the longitudinal slot, the return element is formed by the portion of the circumferential wall extending frontward with respect to the circumferential slot, and the lever comprises a pin projecting from the upper arm of the lever and extending in the circumferential slot when the link element is in the coupled position, and in the longitudinal slot when the link element is in the uncoupled position.
- the link element is bistable between its coupled position and its uncoupled position.
- the weight has a mass chosen so that, when the locking mechanism is accelerating along the first axis, the upper arm of the lever and the lever actuation device produce a first torque on the lever around the first axis, while the lower arm and the weight of the lever produce a second torque on the lever around the first axis, the first and second torques having opposite signs and equal absolute values, plus or minus 10%.
- the blocking unit is a latch.
- an opening system comprising a panel and a locking mechanism for the panel, as previously provided.
- a motor vehicle comprising an opening system as previously provided, wherein the panel is a trunk panel.
- the opening system 100 is a trunk opening system for a motor vehicle (not depicted). Furthermore, the directions (front-back, up-down, left-right) correspond to the usual directions of the motor vehicle.
- the opening system 100 comprises a frame 102, for example the body-in-white of the motor vehicle.
- the opening system 100 further comprises a panel 104 intended to move with respect to the frame 102 to selectively take an open position and a closed position.
- the panel 104 is a trunk panel intended to selectively cover and give access to the trunk (not depicted) of the motor vehicle.
- the opening system 100 further comprises a locking mechanism 106 for selectively blocking the panel 104 in its closed position and letting the panel 104 be opened.
- the locking mechanism 106 is located frontward with respect to the panel 104.
- the locking mechanism 106 first comprises a blocking unit intended to selectively take a blocking configuration in which the blocking unit blocks the panel 104 in its closed position, and an unblocking configuration in which the blocking unit lets the panel 104 be opened.
- the blocking unit is a latch 108, for example, a mechanical latch, an electro-mechanical latch or a magnetic latch.
- the latch 108 comprises a base 110 fixed to the frame 102, and a casing 112 fixed to the panel 104 in a manner not depicted on figure 1 .
- the latch 108 further comprises a bolt 114 mounted on the casing 112 in a movable way, so as to selectively take an engaged position and a disengaged position.
- the bolt 114 engages the casing 112 in order to attach the casing 112 to the base 110, and thus maintain the panel 104 in its closed position.
- the disengaged position the bolt 114 is disengaged from the base 112 in order to allow separation of the casing 112 from the base 110, and thus opening of the panel 104.
- the locking mechanism 106 further comprises a blocking unit actuation system 116.
- the blocking unit is a latch
- the system 116 will from now on be called latch actuation system 116.
- the latch actuation system 116 is intended to be activated by a user in order to make the latch 108 let the panel 104 be opened.
- the latch actuation system 116 first comprises a lever 118 intended to rotate around a left-right axis A1 between a blocking position (which is the position depicted on figure 1 ) and an unblocking position, in order to put the latch 108 in respectively its blocking configuration and unblocking configuration.
- the lever 118 comprises an upper arm 120 extending above the axis A1 and a lower arm 122 extending below the axis A1.
- the lever 118 further comprises a weight 124 fixed to the lower arm 122.
- the latch actuation system 116 further comprises a rod 126 connecting the lever 118 to the bolt 114.
- the rod 126 is intended to move the bolt 114 of the latch 108 between its engaged position and its disengaged position when the lever 118 respectively moves between its blocking position and its unblocking position.
- the latch actuation system 116 further comprises a housing 128 fixed to the panel 104 and projecting frontward from the panel 104.
- the housing 128 is cylindrical and extends around a front-back axis A2.
- the latch actuation system 116 further comprises a lever actuation device 130 partially contained into the housing 128, and intended to move along the axis A2 between a back position and a front position.
- the lever actuation device 130 first comprises a pushbutton 132 passing through the panel 104 and projecting backward from the panel 104, behind the housing 128.
- the pushbutton 132 is intended to be pushed frontward, for instance by a user wanting to open the panel 104, so as to push the lever actuation device 130 from its back position to its front position.
- the lever actuation device 130 further comprises a restoration means (not depicted), such as a restoration spring, for moving the lever actuation device 130 from its back position to its front position.
- a restoration means such as a restoration spring
- the lever actuation device 130 further comprises a link element 134 providing a link with the lever 118.
- the link element 134 first comprises a pushing portion 136 intended to push the upper arm 120 of the lever 118 frontward so as to rotate the lever 118 from its blocking position to its unblocking position when the lever actuation device 130 moves from its back position to its front position.
- the link element 134 further comprises a return portion 138 acting as a restoring portion intended to be pushed by the upper arm 120 of the lever 118 when the lever 118 rotates from its blocking position to its unblocking position, so as to move the lever actuation device 130 from its back position to its front position.
- the return portion 138 is fixed to the pushing portion 136.
- the link element 134 is furthermore intended to move between a coupled position in which the pushing portion 136 is able to push the lever 118 and an uncoupled position in which the pushing portion 136 is unable to push the lever 118, so that pushing the pushbutton 132 does not activate the lever 118.
- the link element 134 is intended to rotate with respect to the housing 128 around the axis A2 for moving between its coupled position and its uncoupled position.
- the link element 134 is bistable between its coupled and uncoupled position.
- the lever actuation device 130 further comprises a coupling system 140 intended to move the link element 134 between its coupled position and its uncoupled position.
- the coupling system 140 is activated by use of a key and is therefore provided with a key insertion slot 142 located for example in the center of the pushbutton 132.
- the return portion 138 is intended to be pushed by the upper arm 120 of the lever 118, whatever the position of the link element 134 - coupled or uncoupled - may be.
- the link element 134 first comprises a disk-shaped base 202 centered on the axis A2.
- the link element 134 further comprises a circumferential wall 204 projecting frontward from the disk-shaped base 202.
- the circumferential wall 204 is provided with a longitudinal slot 206 and a circumferential slot 208.
- the circumferential slot 208 joins the longitudinal slot 206 at a front end of the latter.
- the return element 138 is formed by the portion of the circumferential wall 204 extending frontward with respect to the circumferential slot 208.
- the portion of the circumferential wall 204 extending backward with respect to the circumferential slot 208 forms a stop 210 intended to push the lever 118, as it will be explained below.
- the lever 118 further comprises a pin 302 projecting from the upper arm 120 of the lever 118 and extending in the circumferential slot 208 when the link element 134 is in the coupled position, and in the longitudinal slot 206 when the link element 134 is in the uncoupled position.
- the lever 118 further comprises a restoration means 304 intended to restore the lever 118 from its unblocking position to its blocking position.
- the restoration means 304 is a restoration spring.
- the link element 134 is first assumed to be in its coupled position while the panel 104 is closed and blocked in this closed position by the latch 108.
- the pin 302 of the lever 118 is located in the circumferential slot 208 of the link element 134 and aligned with the stop 210 of the link element 134 with respect to the front-back direction.
- lever actuation device 130 When a user activates the lever actuation device 130 by pushing the pushbutton 132, the lever actuation device 130 moves from its back position to its front position.
- the stop 210 pushes the upper arm 120 of the lever 118 frontward so as to move the lever 118 from its blocking position to its unblocking position.
- the rod 126 moves the bolt 114 of the latch 118 from its engaged position to its disengaged position, allowing opening of the panel 104.
- the restoration means 304 restores the lever 118 to its blocking position.
- the pin 302 pushed the link element 134 backward to make the lever actuation device 130 move from its front position to its back position.
- the rod 126 moves the bolt 114 of the latch 108 from its disengaged position to its engaged position. If the casing 112 is against the base 110, the latch 108 blocks the panel 104 in its closed position.
- the inertia of the lever actuation device 130 tends to make the lever actuation device 130 move from its back position toward its front position.
- the stop 210 pushes the pin 302 of the lever 118, so that the lever 118 tends to move from its blocking position toward its unblocking position, which poses a danger of opening of the panel 104.
- the inertia of the lower arm 122 and the weight 124 of the lever 118 tends to make the lower arm 122 move frontward, so that the lever 118 tends to move from its unblocking position toward its blocking position.
- the mass of the weight 124 is chosen so that, when the locking mechanism 106 is accelerating along the axis A1, for instance as a result of a front or back collision, the upper arm 120 of the lever 118 and the lever actuation device 130 produce a first torque on the lever 118 around the axis A1, while the lower arm 122 of the lever 118 and the weight 124 of the lever 118 produce a second torque on the lever 118 around the axis A1, the first and second torques having opposite signs and equal absolute values, plus or minus 10%.
- the inertia of the lower arm 122 and the weight 124 of the lever 118 compensates the inertia of the lever actuation device 130, and prevents the lever 118 from reaching its unblocking position. Opening of the panel 104 is therefore prevented.
- the inertia of the lower arm 122 and the weight 124 of the lever 118 tends to make the lower arm 122 move backward, so that the lever 118 tends to move from its blocking position toward its unblocking position, which poses a danger of opening of the panel 104.
- the inertia of the lever actuation device 130 tends to make the lever actuation device 130 move backward and drag along the upper arm 120 of the lever by means of the return portion 138.
- the inertia of lever actuation device 130 compensates the inertia of the lower arm 122 and weight 124 and prevents the lever 118 from reaching its unblocking position. Opening of the panel 104 is therefore prevented.
- the link element 134 moves from its coupled position to its uncoupled position.
- the pin 302 of the lever 118 travels into the circumferential slot 208 and reaches the front end of the longitudinal slot 210, so that the stop 210 is shifted from the pin 302 and is unable to push the pin 302 frontward, and thus also to move the lever 118 from its blocking position to its unblocking position. Pushing the pushbutton 132 does not open the panel 104 anymore.
- the inertia of the lower arm 122 and the weight 124 of the lever 118 tends to make the lower arm 122 move backward, so that the lever 118 tends to move from its blocking position toward its unblocking position, which poses a danger of opening of the panel 104.
- the inertia of the lever actuation device 130 tends to make the lever actuation device 130 move backward and drag along the upper arm 120 of the lever by means of the return portion 138, which is still located in front of the pin 302.
- the inertia of lever actuation device 130 compensates the inertia of the lower arm 122 and weight 124 and prevents the lever 118 from reaching its unblocking position. Opening of the panel 104 is therefore prevented.
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- Lock And Its Accessories (AREA)
Description
- In this specification, the terms "front," "frontward," "back," "backward," "up" "upper," "low," "lower," "left," "right," and similar such terms are not to be construed as limiting the invention to a particular orientation. Instead, these terms are used only on a relative basis, and with reference to the following directions in the drawing: front-back, up-down and left-right, respectively designated by the pairs of letters: F-B, U-D and L-R.
- The invention relates to locking mechanisms, in particular for a motor vehicle.
- In a motor vehicle, it is known to lock the trunk panel with a locking mechanism of the type comprising:
- a blocking unit intended to selectively take a blocking configuration in which the blocking unit blocks the panel in a closed position, and an unblocking configuration in which the blocking unit lets the panel be opened,
- a blocking unit actuation system comprising:
- a lever intended to rotate around a first axis between a blocking position and an unblocking position, in order to put the blocking unit in respectively the blocking configuration and the unblocking configuration, the lever comprising an upper arm extending above the first axis, a lower arm extending below the first axis, and a weight fixed to the lower arm, and
- a lever actuation device intended to move between a back position and a front position, the lever actuation device comprising a link element providing a link with the lever, the link element comprising a pushing portion intended to push the upper arm of the lever frontward so as to rotate the lever from its blocking position to its unblocking position when the lever actuation device moves from its back position to its front position.
- Document
FR 2721645 A1 - The blocking unit is often a latch. An advantage of such a mechanism is then to be able to place the latch remotely from the lever actuation device by using a rod, pulled by the lever, to activate the latch.
- Furthermore, the weight prevents unwanted opening of the panel in case of a collision from the front, by forming a counter or balance weight with respect to the lever activation system.
- However, in case of a collision from the back, the presence of the weight actually worsens the risk of opening of the trunk panel and the consequence of the collision. This is because the weight tends to move backward with respect to the rest of the vehicle and in this way drags along the lever from its blocking position to its unblocking position.
- There is therefore a need for a locking mechanism that does not easily give in during a collision from the back.
- According to the invention, it is proposed a locking mechanism according to claim 1.
- Thanks to the restoring portion, the lever is not likely to reach its unblocking position in case of a collision from the back. The reason being that the restoring portion is pushed by the upper arm of the lever, which moves the lever actuation device towards its front position. However, at the same time, because of the collision from the back, the inertia of the lever actuation device tends to make the lever actuation device move towards its back position. This backward movement makes up for the pushing of the upper arm of the lever, and helps preventing the lever from reaching its unblocking position.
- Optionally, the link element is furthermore intended to move between a coupled position in which the pushing portion is able to push the upper arm of the lever and an uncoupled position in which the pushing portion is unable to push the lever, the lever actuation device further comprises a coupling system intended to move the link element between its coupled position and its uncoupled position, and the restoring element is intended to be pushed by the upper arm of the lever when the lever rotates from its blocking position to its unblocking position, so as to move the lever actuation device from its back position to its front position, whatever the position of the link element - coupled or uncoupled - may be.
- Optionally, the lever actuation device is intended to move along a second axis.
- Optionally, the link element is intended to rotate around the second axis in order to move between its coupled position and its uncoupled position.
- Optionally, the link element comprises a base and a wall circumferential with respect to the second axis and projecting frontward from the base, the circumferential wall is provided with a longitudinal slot and a circumferential slot, the circumferential slot joining the longitudinal slot, the return element is formed by the portion of the circumferential wall extending frontward with respect to the circumferential slot, and the lever comprises a pin projecting from the upper arm of the lever and extending in the circumferential slot when the link element is in the coupled position, and in the longitudinal slot when the link element is in the uncoupled position.
- Optionally, the link element is bistable between its coupled position and its uncoupled position.
- Optionally, the weight has a mass chosen so that, when the locking mechanism is accelerating along the first axis, the upper arm of the lever and the lever actuation device produce a first torque on the lever around the first axis, while the lower arm and the weight of the lever produce a second torque on the lever around the first axis, the first and second torques having opposite signs and equal absolute values, plus or minus 10%.
- Optionally, the blocking unit is a latch.
- It is further provided an opening system comprising a panel and a locking mechanism for the panel, as previously provided.
- It is further provided a motor vehicle comprising an opening system as previously provided, wherein the panel is a trunk panel.
- An embodiment of the invention will now be described by way of example only and with reference to the appended figures.
-
Figure 1 is perspective view of an opening system for a trunk according to the invention. -
Figure 2 is a perspective view of is a perspective view of a link element of the opening system offigure 1 . -
Figure 3 is a side view of the opening system offigure 1 , when the link element is in a coupled position. -
Figure 4 is a side view of the opening system offigure 1 , when the link element is in an uncoupled position. - With reference to
figures 1 to 4 , anopening system 100 carrying out the invention will now be described. In the described example, theopening system 100 is a trunk opening system for a motor vehicle (not depicted). Furthermore, the directions (front-back, up-down, left-right) correspond to the usual directions of the motor vehicle. - With reference to
figure 1 , theopening system 100 comprises aframe 102, for example the body-in-white of the motor vehicle. - The
opening system 100 further comprises apanel 104 intended to move with respect to theframe 102 to selectively take an open position and a closed position. In the described example, thepanel 104 is a trunk panel intended to selectively cover and give access to the trunk (not depicted) of the motor vehicle. - The
opening system 100 further comprises alocking mechanism 106 for selectively blocking thepanel 104 in its closed position and letting thepanel 104 be opened. In the described example, thelocking mechanism 106 is located frontward with respect to thepanel 104. - In the described example, the
locking mechanism 106 first comprises a blocking unit intended to selectively take a blocking configuration in which the blocking unit blocks thepanel 104 in its closed position, and an unblocking configuration in which the blocking unit lets thepanel 104 be opened. - In the described example, the blocking unit is a
latch 108, for example, a mechanical latch, an electro-mechanical latch or a magnetic latch. - The
latch 108 comprises abase 110 fixed to theframe 102, and acasing 112 fixed to thepanel 104 in a manner not depicted onfigure 1 . - The
latch 108 further comprises abolt 114 mounted on thecasing 112 in a movable way, so as to selectively take an engaged position and a disengaged position. In the engaged position, if thecasing 112 is against thebase 110, thebolt 114 engages thecasing 112 in order to attach thecasing 112 to thebase 110, and thus maintain thepanel 104 in its closed position. In the disengaged position, thebolt 114 is disengaged from thebase 112 in order to allow separation of thecasing 112 from thebase 110, and thus opening of thepanel 104. - The
locking mechanism 106 further comprises a blockingunit actuation system 116. In the described example, because the blocking unit is a latch, thesystem 116 will from now on be calledlatch actuation system 116. - In the described example, the
latch actuation system 116 is intended to be activated by a user in order to make thelatch 108 let thepanel 104 be opened. - The
latch actuation system 116 first comprises alever 118 intended to rotate around a left-right axis A1 between a blocking position (which is the position depicted onfigure 1 ) and an unblocking position, in order to put thelatch 108 in respectively its blocking configuration and unblocking configuration. - The
lever 118 comprises anupper arm 120 extending above the axis A1 and alower arm 122 extending below the axis A1. Thelever 118 further comprises aweight 124 fixed to thelower arm 122. - The
latch actuation system 116 further comprises arod 126 connecting thelever 118 to thebolt 114. Therod 126 is intended to move thebolt 114 of thelatch 108
between its engaged position and its disengaged position when thelever 118 respectively moves between its blocking position and its unblocking position. - The
latch actuation system 116 further comprises ahousing 128 fixed to thepanel 104 and projecting frontward from thepanel 104. Thehousing 128 is cylindrical and extends around a front-back axis A2. - The
latch actuation system 116 further comprises alever actuation device 130 partially contained into thehousing 128, and intended to move along the axis A2 between a back position and a front position. - The
lever actuation device 130 first comprises apushbutton 132 passing through thepanel 104 and projecting backward from thepanel 104, behind thehousing 128. Thepushbutton 132 is intended to be pushed frontward, for instance by a user wanting to open thepanel 104, so as to push thelever actuation device 130 from its back position to its front position. - The
lever actuation device 130 further comprises a restoration means (not depicted), such as a restoration spring, for moving thelever actuation device 130 from its back position to its front position. - The
lever actuation device 130 further comprises alink element 134 providing a link with thelever 118. - The
link element 134 first comprises a pushingportion 136 intended to push theupper arm 120 of thelever 118 frontward so as to rotate thelever 118 from its blocking position to its unblocking position when thelever actuation device 130 moves from its back position to its front position. - The
link element 134 further comprises areturn portion 138 acting as a restoring portion intended to be pushed by theupper arm 120 of thelever 118 when thelever 118 rotates from its blocking position to its unblocking position, so as to move thelever actuation device 130 from its back position to its front position. In the described example, thereturn portion 138 is fixed to the pushingportion 136. - The
link element 134 is furthermore intended to move between a coupled position in which the pushingportion 136 is able to push thelever 118 and an uncoupled position in which the pushingportion 136 is unable to push thelever 118, so that pushing thepushbutton 132 does not activate thelever 118. In the described example, thelink element 134 is intended to rotate with respect to thehousing 128 around the axis A2 for moving between its coupled position and its uncoupled position. Preferably, thelink element 134 is bistable between its coupled and uncoupled position. - The
lever actuation device 130 further comprises acoupling system 140 intended to move thelink element 134 between its coupled position and its uncoupled position. In the described example, thecoupling system 140 is activated by use of a key and is therefore provided with akey insertion slot 142 located for example in the center of thepushbutton 132. - It should be noted that the
return portion 138 is intended to be pushed by theupper arm 120 of thelever 118, whatever the position of the link element 134 - coupled or uncoupled - may be. - With reference to
figure 2 , thelink element 134 will now be described in greater detail. - The
link element 134 first comprises a disk-shapedbase 202 centered on the axis A2. - The
link element 134 further comprises acircumferential wall 204 projecting frontward from the disk-shapedbase 202. Thecircumferential wall 204 is provided with alongitudinal slot 206 and acircumferential slot 208. Thecircumferential slot 208 joins thelongitudinal slot 206 at a front end of the latter. - The
return element 138 is formed by the portion of thecircumferential wall 204 extending frontward with respect to thecircumferential slot 208. - Furthermore, the portion of the
circumferential wall 204 extending backward with respect to thecircumferential slot 208 forms astop 210 intended to push thelever 118, as it will be explained below. - With reference to
figures 3 and 4 , thelever 118 further comprises apin 302 projecting from theupper arm 120 of thelever 118 and extending in thecircumferential slot 208 when thelink element 134 is in the coupled position, and in thelongitudinal slot 206 when thelink element 134 is in the uncoupled position. - The
lever 118 further comprises a restoration means 304 intended to restore thelever 118 from its unblocking position to its blocking position. In the described example the restoration means 304 is a restoration spring. - Operation of the
opening system 100 will now be explained. - The
link element 134 is first assumed to be in its coupled position while thepanel 104 is closed and blocked in this closed position by thelatch 108. - Because the
link element 134 is in its coupled position, thepin 302 of thelever 118 is located in thecircumferential slot 208 of thelink element 134 and aligned with thestop 210 of thelink element 134 with respect to the front-back direction. - When a user activates the
lever actuation device 130 by pushing thepushbutton 132, thelever actuation device 130 moves from its back position to its front position. - Because the
pin 302 is aligned with thestop 210, thestop 210 pushes theupper arm 120 of thelever 118 frontward so as to move thelever 118 from its blocking position to its unblocking position. In turn, therod 126 moves thebolt 114 of thelatch 118 from its engaged position to its disengaged position, allowing opening of thepanel 104. - When the user releases the
pushbutton 132, the restoration means 304 restores thelever 118 to its blocking position. During this restoration movement, thepin 302 pushed thelink element 134 backward to make thelever actuation device 130 move from its front position to its back position. At the same time, therod 126 moves thebolt 114 of thelatch 108 from its disengaged position to its engaged position. If thecasing 112 is against thebase 110, thelatch 108 blocks thepanel 104 in its closed position. - In case of a collision from the front, the inertia of the
lever actuation device 130 tends to make thelever actuation device 130 move from its back position toward its front position. Thestop 210 pushes thepin 302 of thelever 118, so that thelever 118 tends to move from its blocking position toward its unblocking position, which poses a danger of opening of thepanel 104. At the same time, the inertia of thelower arm 122 and theweight 124 of thelever 118 tends to make thelower arm 122 move frontward, so that thelever 118 tends to move from its unblocking position toward its blocking position. The mass of theweight 124 is chosen so that, when thelocking mechanism 106 is accelerating along the axis A1, for instance as a result of a front or back collision, theupper arm 120 of thelever 118 and thelever actuation device 130 produce a first torque on thelever 118 around the axis A1, while thelower arm 122 of thelever 118 and theweight 124 of thelever 118 produce a second torque on thelever 118 around the axis A1, the first and second torques having opposite signs and equal absolute values, plus or minus 10%. With such a mass for theweight 124, the inertia of thelower arm 122 and theweight 124 of thelever 118 compensates the inertia of thelever actuation device 130, and prevents thelever 118 from reaching its unblocking position. Opening of thepanel 104 is therefore prevented. - In case of a collision from the back, the inertia of the
lower arm 122 and theweight 124 of thelever 118, tends to make thelower arm 122 move backward, so that thelever 118 tends to move from its blocking position toward its unblocking position, which poses a danger of opening of thepanel 104. At the same time, the inertia of thelever actuation device 130 tends to make thelever actuation device 130 move backward and drag along theupper arm 120 of the lever by means of thereturn portion 138. The inertia oflever actuation device 130 compensates the inertia of thelower arm 122 andweight 124 and prevents thelever 118 from reaching its unblocking position. Opening of thepanel 104 is therefore prevented. - When the user activates the
coupling system 140, thelink element 134 moves from its coupled position to its uncoupled position. As a results, thepin 302 of thelever 118 travels into thecircumferential slot 208 and reaches the front end of thelongitudinal slot 210, so that thestop 210 is shifted from thepin 302 and is unable to push thepin 302 frontward, and thus also to move thelever 118 from its blocking position to its unblocking position. Pushing thepushbutton 132 does not open thepanel 104 anymore. - In case of a collision from the front, the inertia of the
lever actuation device 130 tends to make thelever actuation device 130 move from its back position toward its front position. However, because thelink element 134 is not coupled to thelever 118, the movement of thelever actuation device 130 toward the front does not make thelever 118 move toward its unblocking position, so that thepanel 104 stays blocked by thelatch 108. - In case of a collision from the back, the inertia of the
lower arm 122 and theweight 124 of thelever 118, tends to make thelower arm 122 move backward, so that thelever 118 tends to move from its blocking position toward its unblocking position, which poses a danger of opening of thepanel 104. At the same time, the inertia of thelever actuation device 130 tends to make thelever actuation device 130 move backward and drag along theupper arm 120 of the lever by means of thereturn portion 138, which is still located in front of thepin 302. The inertia oflever actuation device 130 compensates the inertia of thelower arm 122 andweight 124 and prevents thelever 118 from reaching its unblocking position. Opening of thepanel 104 is therefore prevented. - When the user activates again the
coupling system 140, thelink element 134 moves back from its uncoupled position to its coupled position. - The present invention is not limited to the embodiment previously described, but instead defined by the appended claims. It will in fact be apparent to the one skilled in the art that modifications can be applied to the embodiments previously described.
- Furthermore, the terms used in the appended claims shall not be understood as limited to the elements of the embodiments previously described, but on the contrary shall be understood as including all equivalent elements that the one skilled in the art is able to derive using their general knowledge.
Claims (10)
- Locking mechanism (106) for a panel (104) comprising :- a blocking unit (108) intended to selectively take a blocking configuration in which the blocking unit (108) blocks the panel (104) in a closed position, and an unblocking configuration in which the blocking unit (108) lets the panel (104) be opened,- a blocking unit actuation system (116) comprising:- a lever (118) intended to rotate around a first axis (A1) between a blocking position and an unblocking position, in order to put the blocking unit (108) in respectively the blocking configuration and the unblocking configuration, the lever (118) comprising an upper arm (120) extending above the first axis (A1), a lower arm (122) extending below the first axis (A1), and a weight (124) fixed to the lower arm (122), and- a lever actuation device (130) intended to move between a back position and a front position, the lever actuation device (130) comprising a link element (134) providing a link with the lever (118), the link element (134) comprising a pushing portion (136) intended to push the upper arm (120) of the lever (118) frontward so as to rotate the lever (118) from its blocking position to its blocking position when the lever actuation device (130) moves from its back position to its front position, the lever actuation device (130) further comprises a pushbutton (132) intended to be pushed frontward so as to push the lever actuation device (130) from its back position to its front position, characterized in that the link element (134) further comprises a restoring portion (138) intended to be pushed by the upper arm (120) of the lever (118) when the lever (118) rotates from its blocking position toward its unblocking position in case of a collision from the back, so as to move the lever actuation device (130) toward its front position.
- Locking mechanism (106) according to claim 1, wherein the link element (134) is furthermore intended to move between a coupled position in which the pushing portion (136) is able to push the upper arm (120) of the lever (118) and an uncoupled position in which the pushing portion (136) is unable to push the lever (118),
wherein the lever actuation device (130) further comprises a coupling system (140) intended to move the link element (134) between its coupled position and its uncoupled position, and
and wherein the restoring element (138) is intended to be pushed by the upper arm (120) of the lever (118) when the lever (118) rotates from its blocking position to its unblocking position, so as to move the lever actuation device (130) from its back position to its front position, whatever the position of the link element (134) - coupled or uncoupled - may be. - Locking mechanism (106) according to claim 1 or 2, wherein the lever actuation device (130) is intended move along a second axis (A2).
- Locking mechanism (106) according to claims 2 and 3, wherein the link element (134) is intended to rotate around the second axis (A2) in order to move between its coupled position and its uncoupled position.
- Locking mechanism (106) according to claim 4,
wherein the link element (134) comprises a base (202) and a wall (204) circumferential with respect to the second axis (A2) and projecting frontward from the base (202),
wherein the circumferential wall (204) is provided with a longitudinal slot (206) and a circumferential slot (208), the circumferential slot (208) joining the longitudinal slot (206),
wherein the restoring portion (138) is formed by the portion of the circumferential wall (204) extending frontward with respect to the circumferential slot (208), and
wherein the lever comprises a pin (302) projecting from the upper arm (120) of the lever (118) and extending in the circumferential slot (208) when the link element (134) is in the coupled position, and in the longitudinal slot (206) when the link element (134) is in the uncoupled position. - Locking mechanism (106) according to anyone of claims 2 to 5, wherein the link element (134) is bistable between its coupled position and its uncoupled position.
- Locking mechanism (106) according to anyone of claims 1 to 6, wherein the weight (124) has a mass chosen so that, when the locking mechanism (106) is accelerating along the first axis (A1), the upper arm (120) of the lever (118) and the lever actuation device (130) produce a first torque on the lever (118) around the first axis (A1), while the lower arm (122) and the weight (124) of the lever (118) produce a second torque on the lever (118) around the first axis (A1), the first and second torques having opposite signs and equal absolute values, plus or minus 10%.
- Locking mechanism (106) according to anyone of claims 1 to 7, wherein the blocking unit (108) is a latch.
- Opening system (100) comprising a panel (104) and a locking mechanism (106) for the panel (104), according to anyone of claims 1 to 8.
- Motor vehicle comprising an opening system (100) according to claim 9, wherein the panel (104) is a trunk panel.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13290125.7A EP2821571B1 (en) | 2013-06-05 | 2013-06-05 | Locking mechanism, opening system and motor vehicle |
PCT/EP2013/076721 WO2014095735A1 (en) | 2012-12-20 | 2013-12-16 | Locking mechanism, opening system and motor vehicle |
BR112015014385A BR112015014385A2 (en) | 2012-12-20 | 2013-12-16 | locking mechanism, opening system and self-propelled vehicle |
RU2015129614A RU2634895C2 (en) | 2012-12-20 | 2013-12-16 | Locking mechanism, opening system and vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13290125.7A EP2821571B1 (en) | 2013-06-05 | 2013-06-05 | Locking mechanism, opening system and motor vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2821571A1 EP2821571A1 (en) | 2015-01-07 |
EP2821571B1 true EP2821571B1 (en) | 2018-03-28 |
Family
ID=48745857
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13290125.7A Not-in-force EP2821571B1 (en) | 2012-12-20 | 2013-06-05 | Locking mechanism, opening system and motor vehicle |
Country Status (1)
Country | Link |
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EP (1) | EP2821571B1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3072407B1 (en) * | 2017-10-16 | 2022-07-22 | Psa Automobiles Sa | VEHICLE COMPRISING AN OPENING LOCKING DEVICE INTEGRATING THE OPENING CONTROL OF SAID OPENING |
US12110720B2 (en) * | 2021-01-26 | 2024-10-08 | Rev Ambulance Group Orlando, Inc. | Vehicle door including push button actuator |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2721645B1 (en) * | 1994-06-24 | 1996-12-27 | Renault | Lock control device by push button. |
FR2769938B1 (en) * | 1997-10-20 | 1999-11-26 | Antivols Simplex Sa | ELECTRIC LOCK CONTROLLED BY A SWITCH THAT MAY BE INHIBITED |
US7029042B2 (en) * | 2004-01-22 | 2006-04-18 | Illinois Tool Works Inc | Automobile door handle |
KR20090040769A (en) * | 2007-10-22 | 2009-04-27 | 현대자동차주식회사 | Release prevention device for door handle |
DE102010000924A1 (en) * | 2010-01-14 | 2011-07-21 | Huf Hülsbeck & Fürst GmbH & Co. KG, 42551 | Handle for a locking device of a motor vehicle |
-
2013
- 2013-06-05 EP EP13290125.7A patent/EP2821571B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
EP2821571A1 (en) | 2015-01-07 |
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