Electric locking mechanism for doors and windows, comprising a mechanical emergency function

Abstract

The invention relates to a locking mechanism for a door window of a motor vehicle, comprising: a lock comprising a pawl and a latch; an electric actuator; a transmission configured to transmit a movement of the electric actuator to the latch in order to displace the latch of the lock between an unlocked position and a locked position; the transmission comprising: a downstream transmission member; an upstream transmission member; and a blocking member movable relative to the downstream transmission member and / or the upstream transmission member, the blocking member being configured to define, together with the upstream transmission member and / or the downstream transmission member: a relative blocking position in which the blocking member cooperates with the upstream transmission member and / or the downstream transmission member to allow a transmission of movement between the upstream transmission member and the downstream transmission member; and a relative unblocking position in which the blocking member is movable according to at least one degree of freedom relative to the upstream transmission member and / or the downstream transmission member. The invention also relates to a motor vehicle comprising a locking mechanism.

Description

[0001] Mechanical field

[0002] The present invention relates to an electric locking mechanism for a door window of a motor vehicle, more particularly to a rear door window of a motor vehicle, such as a trunk. BACKGROUND

[0003] Electric locking and / or closing functions assisting the closing of a door window are increasingly frequent on the rear doors of vehicles. Thus, the user can remotely control the opening and closing of his rear door. An electric cylinder implements the opening and closing of the rear door, while a lock implements the closing or opening of the door window.

[0004] The electrically assisted opening or closing lock implements the function by means of an actuator which drives the pawl to open the door window or drives the latch to close the door window.

[0005] If a certain element of the electric locking mechanism malfunctions, such as a loss of voltage, a burnt motor or a rusty motor, the lock can no longer be driven electrically, so a mechanical emergency function must be implemented.

[0006] With regard to opening, it is known to directly or indirectly drive the pawl to tilt it and open the lock.

[0007] For closing, there is a mechanical or electromechanical release solution by friction which allows the latch to be pulled to disengage the latch from the electric locking mechanism to release the electric locking mechanism.

[0008] However, this solution has many drawbacks since it is complex and expensive to implement.

[0009] Finally, many products do not have a mechanical emergency solution.

[0010] There is therefore a risk that the lock will remain blocked. The user can think that the lock is closed, i.e. that the pawl blocks the latch, while in fact the blocked electrode prevents the latch from pivoting. SUMMARY

[0011] The present invention aims to solve at least one of the above-mentioned drawbacks by providing a locking mechanism for a door window of a motor vehicle, said locking mechanism comprising:

[0012] - a lock for locking the door window, comprising a pawl and a latch, the pawl and the latch being configured to cooperate to allow locking or unlocking of the door window;

[0013] - an electric actuator;

[0014] - transmission means configured to transmit the movement of the electric actuator to the latch of the lock, so that the latch of said lock is displaced between an unlocked position, in which the latch is released from the pawl, and a locked position, in which the latch is blocked by the pawl;

[0015] The transmission device includes:

[0016] The downstream transmission component is configured to transmit motion to the latch.

[0017] The upstream transmission component is configured to transmit motion from the actuator to the downstream transmission component; and

[0018] The blocking member, relative to the movable blocking member of the downstream and / or upstream drive members, is configured to define together with the upstream and / or downstream drive members:

[0019] - A relative blocking position, wherein the blocking member cooperates with the upstream and / or downstream transmission members to allow motion to be transmitted between the upstream and downstream transmission members, and

[0020] - Relative unblocking position, wherein the blocking member can move with at least one degree of freedom relative to the upstream and / or downstream transmission members.

[0021] Therefore, in particular, through the transmission mechanism of the locking mechanism, the locking mechanism can be easily operated in the event of an electrical failure in the vehicle.

[0022] Locking can also be understood as closing, especially electric locking or closing. Similarly, unlocking can be understood as opening, except for electric unlocking or opening.

[0023] Within the meaning of this invention, the fact that the blocking member can move relative to the upstream and / or downstream transmission members along at least one degree of freedom in the relative unblocking position means that, in the relative unblocking position, relative to the relative blocking position, there is at least one additional degree of freedom between the blocking member and the upstream and / or downstream transmission members.

[0024] It should be understood that a transmission device is formed by a transmission chain that includes an upstream transmission component, a blocking component, and a downstream transmission component. In other words, the transmission chain includes a blocking component.

[0025] In the relatively unblocked position, the upstream and downstream transmission components no longer engage with each other.

[0026] It should be understood that one of the upstream and downstream transmission components is permanently connected to the blocking component. The other of the upstream and downstream transmission components is detachably connected to the blocking component.

[0027] Specifically, in the relatively blocked position, the blocking member is connected to the upstream transmission member and the downstream transmission member.

[0028] For example, in a relatively unblocked position, the blocking member is connected to the upstream transmission member and separated from the downstream transmission member, or the blocking member is connected to the downstream transmission member and separated from the upstream transmission member.

[0029] The term "connection" is understood to mean that the blocking member engages or cooperates with the upstream and / or downstream drive members to allow or disallow the transmission of motion from the actuator to the latch.

[0030] The blocking component can be directly or indirectly connected to the upstream transmission component.

[0031] The blocking component can be directly or indirectly connected to the downstream transmission component.

[0032] Understandably, the actuator is configured to shift the latch to a locked position, in which the latch cooperates with the pawl to lock the door or window.

[0033] It should be understood that the actuator is configured to shift the latch to the unlocked position, where the latch is released from the pawl to unlock the door or window.

[0034] For example, the locking mechanism includes a return element configured to return the latch to the unlocked position.

[0035] Therefore, in the relatively unblocked position, when the upstream and downstream transmission components separate, the return element causes the latch to return to the unlocked position and the door / window is unlocked.

[0036] For example, the return element is a spring. Alternatively, the return element can be an elastic sheet, such as a metal sheet.

[0037] In one possibility, the blocking component is connected to a mechanical emergency system configured to trigger a transition between the relative blocking position and the relative unblocking position of the blocking component and the upstream and / or downstream drive components.

[0038] Unlike existing technologies where the latch must be disconnected from the mechanism, mechanical emergency systems allow the transmission to be disconnected to address electrical faults.

[0039] Specifically, the mechanical emergency system can be manually activated by the user to displace the blocking component and separate the downstream transmission component from the upstream transmission component, and then place it in a relatively unblocked position.

[0040] According to one possibility, the blocking member includes a cam surface configured to displace the blocking member under the action of a thrust from an upstream drive member and / or a downstream drive member, so as to position the upstream drive member and / or the downstream drive member and the blocking member in a relative blocking position.

[0041] Once the electrical fault is repaired, the locking mechanism can be reset to electrically lock the doors and windows.

[0042] Understandably, the blocking member, upstream drive member, and downstream drive member are configured to transition from a relatively unblocked position to a relatively blocked position. This transition can be achieved by sliding the upstream or downstream drive member against the cam surface of the device member. The upstream or downstream drive member can be manually moved against the cam surface of the blocking member.

[0043] According to another possibility, the downstream drive member includes a cam surface configured to guide the blocking member relative to the downstream drive member under the rotation of the upstream drive member, thereby positioning the upstream drive member and the blocking member in a relative blocking position.

[0044] According to another possibility, the blocking member can move between an open position and a closed position. In the open position, the upstream and / or downstream transmission members can transition from a relative blocking position to a relative unblocking position. In the closed position, the blocking member resists the transition from the blocking position to the unblocking position.

[0045] Therefore, the blocking component and the upstream and / or downstream drive components are disconnected to repair the electrical fault.

[0046] In one possibility, the blocking member includes a contact surface configured to contact an upstream drive member and / or a downstream drive member, the blocking member being guided between a closed position and an open position along a path included in a plane of the contact surface.

[0047] The contact surface reduces the effort required to disconnect upstream and / or downstream drive components from the blocking component.

[0048] According to one possibility, the blocking member can rotate about a rotation axis, with the contact surface perpendicular to the orientation of the section connecting the rotation axis to the surface.

[0049] In one possibility, the downstream drive member and / or the upstream drive member includes a return device configured to apply a return force on the blocking member toward the closed position of the blocking member.

[0050] For example, the return device is a spring. Alternatively, the return device can be an elastic sheet, such as a metal sheet.

[0051] According to one possibility, the downstream transmission member and / or the upstream transmission member includes a stop configured to block the blocking member in the closed position.

[0052] Therefore, the return device and the stop allow the blocking component to self-lock in the blocked position and the closed position.

[0053] According to another possibility, the blocking component is configured to be moved from the closed position to the open position by mechanical traction of a mechanical emergency system. For example, the mechanical emergency system can be manually towed.

[0054] According to another possibility, the cam surface is configured to shift the blocking member between the closed position and the open position of the blocking member under the thrust from the upstream drive member.

[0055] The displacement of the blocking component from the closed position to the open position allows the blocking component and the upstream drive component to reconnect.

[0056] According to one possibility, the downstream transmission member includes an opening configured to receive at least a portion of the upstream transmission member.

[0057] According to one embodiment, the closed position is defined by the relative positioning of the blocking member with respect to the opening of the downstream transmission member. Specifically, the closed position corresponds to a location where the blocking member and the opening define a space for blocking the transmission member, the size of which corresponds to the size of the blocking portion of the transmission member.

[0058] According to one embodiment, the opening position is defined by the relative positioning of the blocking member with respect to the opening.

[0059] According to one embodiment, the receiving portion is configured to allow it to shift between a relative blocked position and a relative unblocked position.

[0060] The present invention also relates to a motor vehicle including the locking mechanism. Attached Figure Description

[0061] The invention will be described in more detail with reference to the various accompanying drawings presented below, which will aid in its understanding. In the drawings:

[0062] Figure 1 A partial view of the locking mechanism according to a first embodiment of the present invention is shown.

[0063] Figure 2 Another partial view of the locking mechanism according to a first embodiment of the present invention is shown.

[0064] Figure 3 A partial view of the locking mechanism when the mechanical emergency system is activated, according to a first embodiment of the present invention, is shown.

[0065] Figure 4 A partial side view of the locking mechanism when the blocking member is in the closed position, according to a first embodiment of the present invention, is shown.

[0066] Figure 5AA partial side view of the locking mechanism is shown in the first step of allowing the locking mechanism to be reset, according to a first embodiment of the invention.

[0067] Figure 5B A partial side view of the locking mechanism is shown in the second step, which allows the locking mechanism to be reset, according to a first embodiment of the invention.

[0068] Figure 5C A partial side view of the locking mechanism is shown in the third step, which allows the locking mechanism to be reset, according to a first embodiment of the invention.

[0069] Figure 5D A partial side view of the locking mechanism is shown in the fourth step, which allows the locking mechanism to be reset, according to a first embodiment of the invention.

[0070] Figure 5E A partial side view of the locking mechanism is shown in the fifth step, which allows the locking mechanism to be reset, according to a first embodiment of the invention.

[0071] Figure 6 A partial side view of a locking mechanism according to a second embodiment of the present invention is shown.

[0072] Figure 7 A partial side view of a locking mechanism according to a second embodiment of the present invention is shown.

[0073] Figure 8 A partial side view of the locking mechanism when the mechanical emergency system is actuated, according to a second embodiment of the present invention, is shown.

[0074] Figure 9 A partial side view of the locking mechanism when the blocking member is in the closed position, according to a second embodiment of the present invention, is shown.

[0075] Figure 10 A partial front view of a locking mechanism according to a second embodiment of the present invention is shown. Detailed Implementation

[0076] In the following description, the terms "upstream" and "downstream" should be understood as indicating the position of the components constituting the transmission device relative to the direction of movement transmitted by each of these components. In particular, "downstream" means approaching lock 32, and "upstream" means approaching the electric actuator 24 used to control locking / unlocking.

[0077] Figure 1 Showing a lock 32 ( Figure 10 A portion of the locking mechanism 1 shown, more specifically the transmission 2, which includes a blocking member 4, an upstream transmission member 5, and a downstream transmission member including a support member 3 and a connecting rod member 6.

[0078] The support member 3, which extends along the longitudinal axis XX, includes an opening 7, such as a rectangular hole, which extends along an axis parallel to the longitudinal axis XX.

[0079] The upstream transmission member 5, intended to be connected to an actuator (e.g., a rod or cable), includes a first portion 11 extending parallel to the longitudinal axis XX and a second portion (not visible) extending laterally relative to the longitudinal axis to be inserted through an opening 7 in the support member 3.

[0080] The blocking member 4, such as a hook, is configured to rotate relative to a rotation axis A transverse to the longitudinal axis XX between a relative blocking position and a relative unblocking position, as shown in the figure. In the relative blocking position, the blocking member 4 cooperates with the upstream transmission member 5. In the relative unblocking position, the blocking member 4 is movable relative to the upstream transmission member 5 according to at least one degree of freedom.

[0081] More precisely, the blocking member 4 includes a receiving portion 13 configured to receive a second part of the upstream transmission member 5, the relative blocking position corresponding to the connection between the blocking member 4 and the upstream transmission member 5.

[0082] This connection results in contact between the upstream transmission member 5 and the contact surface 12 formed by the receiving portion 13 of the blocking member 4. The contact surface 12 is oriented perpendicular to the section connecting the rotation axis A to the contact surface 12. Figure 5A As can be seen in the text.

[0083] The blocking member 4 also includes an aperture 16 configured to receive... Figures 1 to 4 The mechanical emergency system 23 shown is, for example, a cable or pole. Therefore, when the mechanical emergency system 23 is mechanically towed, the blocking member 4 shifts from a closed position to an open position about the rotation axis A. In the closed position, the blocking member 4 prevents the transition from the blocked position to the contact blocked position, as shown. Figure 4 and 5A As shown, in the open position, the upstream transmission member 5 can switch from a relatively blocked position to a relatively unblocked position, for example, as... Figure 5C As shown.

[0084] According to another embodiment, the mechanical emergency system 23 is directly integrated into the blocking component 4. In other words, the blocking component 4 and the mechanical emergency system form a single unit.

[0085] More specifically, the orifice 16 is disposed in the plane of the contact surface 12 of the blocking member 4.

[0086] Mechanical traction can be achieved along a movement substantially perpendicular to the contact surface 12 of the section where the axis of rotation A is connected to the blocking member 4.

[0087] It should be noted that the above-described movements are not intended to limit the invention.

[0088] The support member 3 includes a stop member 17 that extends laterally outward relative to the longitudinal axis XX.

[0089] The stop 17 is configured to block the rotation of the blocking member 4 in its closed position when the blocking member 4 moves from its open position to its closed position.

[0090] The support 3 also includes a return device 18, such as a tongue as shown in the figure, or a spring.

[0091] Return device 18 is configured to block the rotation of blocking member 4 from its closed position to its open position by returning the blocking member 4 to its closed position, for example, as Figure 4 and 5A As shown.

[0092] In other words, the closing position is defined by the relative positioning of the blocking member 4 with respect to the opening 7 of the support member 3.

[0093] Specifically, the closed position of the blocking member 4 corresponds to a position in which the blocking member 4 and the opening 7 define a space for blocking the upstream transmission member 5, the size of which corresponds to the size of the blocking portion of the upstream transmission member 5.

[0094] In fact, the dimensions of the second part of the upstream transmission member 5 are designed such that this second part of the upstream transmission member 5 can be inserted into the receiving portion 13 of the blocking member 4, for example, as shown in the figure. Figure 1 and 5E As shown.

[0095] Furthermore, in the closed position, the receiving portion 13 of the blocking member 4 is arranged opposite to the opening 7 of the support member 3.

[0096] In itself, the opening position is also defined by the relative positioning of the blocking member 4 with respect to the opening 7 of the support member 3.

[0097] In fact, when the blocking member 4 is in the open position, the receiving part 13 no longer faces the opening 7 of the support member 3.

[0098] The receiving part 13 is therefore configured to allow it to shift between a relatively blocked position and a relatively unblocked position.

[0099] The connecting rod component 6 can rotate relative to the support component 3 along the rotation axis B.

[0100] The rotation axis B of the connecting rod component 6 and the rotation axis A of the blocking component 4 are located on the same plane.

[0101] It should be noted that the blocking member 4 is disposed on the first surface 21 of the support member 3, and the connecting rod member 6 is disposed on the second surface of the bracket 3 opposite to the first surface 21.

[0102] Figure 1 and Figure 2 A locking mechanism 1 including a transmission device 2 is shown, wherein the locking block 4 is in a relatively blocked position.

[0103] The connecting rod component 6 contacts the latch 22.

[0104] This causes actuator 24 (such as Figure 10 The actuation (as shown) applies a pulling force to the upstream transmission member 5.

[0105] Figure 3 The locking mechanism 1 in which the mechanical emergency system 23 has been activated is shown.

[0106] In fact, this causes the blocking component 4 to... Figure 1 and 2 The relative blocking position shown is converted to the relative unblocking position.

[0107] Therefore, the return device 18 is compressed by the blocking member 4 under the applied tension.

[0108] The blocking component 4 and the upstream transmission component 5 therefore no longer cooperate.

[0109] Figure 4 The locking mechanism 1 is shown when the blocking member 4 is in the closed position.

[0110] In fact, once the relative unblocking position of the blocking member 4 is obtained, the upstream transmission member 5 is no longer located in the receiving part 13 of the blocking member 4, but can move in the opening 7 of the support member 3.

[0111] Once the mechanical emergency system 23 has been released, the blocking component 4 is in the closed position as shown, specifically by the return force applied by the return device 18.

[0112] Figures 5A to 5E Different steps are shown that allow resetting the locking mechanism when the mechanical emergency system 23 has been used (e.g., in the event of an electrical failure of the locking mechanism 1 of the doors and windows of a motor vehicle).

[0113] Reset is achieved by switching the blocking member 4 from its closed position to its open position so that it is eventually in a relatively blocked position.

[0114] The blocking member 4 includes a cam surface 31 configured to displace the blocking member 4 under the thrust of the upstream transmission member 5, thereby positioning the upstream transmission member 5 and the blocking member 4 in a relative blocking position, such as...Figure 5E As shown.

[0115] exist Figure 5A In this state, the upstream transmission component 5 no longer engages with the blocking component 4. In fact, the mechanical emergency system 23 has been activated. This causes the blocking component 4 to close by returning the return device 18 and the stop 17.

[0116] exist Figure 5B In the middle, the upstream transmission component 5 contacts the cam surface 31 of the blocking component 4.

[0117] More precisely, it is the second part of the upstream transmission component 5 that, through its movement in the opening 7 of the support 3, will come into contact with the cam surface 31 of the blocking component 4.

[0118] exist Figure 5C In the middle, the upstream transmission component 5 runs along the cam surface 31 of the blocking component 4, allowing the blocking component 4 to switch from its closed position to its open position.

[0119] At this position, the return device 18 is compressed by the blocking member 4.

[0120] exist Figure 5D In the middle, the upstream transmission component 5 contacts the contact surface 12 of the blocking component 4.

[0121] like Figure 5E As shown, the blocking member 4 and the upstream transmission member 5 are connected to each other and therefore cooperate with each other. In fact, the blocking member 4 and the upstream transmission member are in a relatively blocked position.

[0122] The operation of the invention according to the first embodiment is described in detail in the following paragraphs.

[0123] During the electric locking of a motor vehicle's doors and windows (such as the trunk of a motor vehicle), the user can remotely control the electric locking.

[0124] When the electric locking of the doors and windows occurs properly, the actuator 24, such as the motor, is activated according to the translational movement and the longitudinal extension axis XX of the support 3. Figure 10 (As shown in the diagram) will apply traction force to the upstream transmission component 5.

[0125] The upstream transmission component 5 is connected to the blocking component 4, resulting in contact between the contact surface 12 of the upstream transmission component and the blocking component 4.

[0126] The blocking member 4 includes a contact surface 12 configured to contact the upstream transmission member 5 and / or the downstream transmission member, and the blocking member 4 is guided between a closed position and an open position along a path included in the plane of the contact surface 12.

[0127] More precisely, the blocking member 4 is rotatable about the axis of rotation A, and the contact surface 12 is perpendicular to the segment that connects the axis of rotation A to the surface 12.

[0128] Therefore, the upstream transmission member 5 is configured such that when the blocking member 4 is in a relatively blocked position, the upstream transmission member 5 passes through the opening 7 of the biased displacement support 3 of the electric actuator 24.

[0129] Therefore, the linkage component 6 will be driven to rotate about the axis of rotation B by the displacement of the support 3, thereby acting on the lock 32 of the door and window, more specifically on the latch 22 of the lock 32, so as to lock the door and window.

[0130] In fact, the connecting rod component 6 is connected to the support 3 at the second surface of the support 3 via a pivot connection that coincides with the rotation axis A of the blocking member 4.

[0131] In the event of any electrical failure in doors, windows, or vehicles, such as Figure 1 The transmission device 2 shown is, for example, blocked in this position, that is, in a relatively blocked position, and it can be said that it has not reached the locked position of the door or window.

[0132] Therefore, the user can be confident that the doors and windows of his vehicle are locked, rather than actually being locked.

[0133] In order to release the blockage of the locking mechanism 1 of the door and window, the user applies a traction force to the mechanical emergency system 23, thereby disengaging the upstream transmission member 5 and the blocking member 4 by means of the rotation of the blocking member 4 according to the rotation axis X.

[0134] In other words, the blocking member 4 moves from its closed position to its open position, allowing the upstream transmission member 5 to no longer be locked in the receiving portion 13 of the blocking member 4.

[0135] Once disengaged, the upstream transmission component 5 can move freely through the opening 7 of the support 3.

[0136] Return device 18 will drive blocking member 4 in the closed position, meaning that upstream drive member 5 and blocking member 4 are not connected to each other, such as Figure 4 , 5A As shown. In order to reset the locking mechanism 1, the user moves the upstream transmission member 5 until it contacts the cam surface 31 of the blocking member 4.

[0137] In fact, when the blocking member 4 is in the closed position, the cam surface 31 of the blocking member 4 is located on the channel of the opening 7 of the support member 3, such as Figure 4 and 5AAs shown, when the upstream transmission member 5 moves through the opening 7 of the support member 3 and encounters the blocking member 4 (more specifically, the cam surface 31 of the blocking member 4), the blocking member 4 changes from its closed position to its open position, as... Figure 5B and 5C As shown.

[0138] like Figure 5E As shown, the thrust of the upstream drive member 5 on the cam surface 31 of the blocking member 4 allows the upstream drive member 5 and the blocking member 4 to be repositioned in a relative blocking position.

[0139] More specifically, by returning to device 18, blocking member 4 will return to its relative blocking position.

[0140] The return device 18 and the stop 17 are self-locking devices that lock the blocking member 4 in its closed position and its relative blocking position.

[0141] Once these steps are performed and the electrical fault is resolved, the electric locking of lock 32 can be performed electrically.

[0142] Figure 6 A locking mechanism 1' according to a second embodiment of the present invention is shown.

[0143] The locking mechanism is a lock 32 for locking doors and windows. The lock 32 includes a pawl 25 and a bolt 22', which are configured to cooperate to allow locking or unlocking of doors and windows.

[0144] The locking mechanism includes an electric actuator 24 and a transmission 2', the transmission being configured to transmit motion of the electric actuator 24 to a latch 22' such that the latch 22' of the lock 32 shifts between an unlocked position and a locked position, in which the latch 22' is released from the pawl, and in the locked position, the latch 22' is blocked by the pawl.

[0145] like Figure 10 As shown, the electric actuator 24 includes an output shaft that is driven to rotate and is equipped with a worm gear 26.

[0146] The transmission device 2' includes an upstream transmission member 5'. In this embodiment, the upstream transmission member 5' is implemented in the form of a gear, which is mounted to be rotatable about axis C and cooperates with a worm gear 26. Therefore, the worm gear 26 can drive the upstream transmission member 5' to rotate about axis C.

[0147] The transmission device 2' includes a downstream transmission member 6', which in this embodiment is implemented as a rotatable link.

[0148] Specifically, the downstream transmission member 6' can be mounted to rotate about the same axis of rotation C as the upstream transmission member 5'.

[0149] The downstream transmission member 6' includes a first drive stop 27 for driving the latch 22'. The downstream transmission member 6' also includes a second blocking stop 17' and a cam surface 28 arranged adjacent to the second blocking stop 17'.

[0150] The upstream transmission member 5' is configured to transmit the motion of the actuator 24 to the downstream transmission member 6', and the downstream transmission member 6' is configured to transmit the motion to the latch 22'.

[0151] The transmission device 2' includes a blocking member 4', which is mounted to be rotatable relative to the upstream transmission member 5' about the rotation axis C.

[0152] Specifically, the axis of rotation is parallel to the axis of rotation of the downstream transmission member 6' and is positioned in an offset manner. The blocking member 4' includes an extension 29 for supporting the second blocking stop 17' against the downstream transmission member 6'.

[0153] The blocking member 4' is configured to define the downstream transmission member 6' together:

[0154] - A relative blocking position, wherein the blocking member 4' cooperates with the downstream transmission member 6' to allow motion to be transmitted between the upstream transmission member 5' and the downstream transmission member 6', and

[0155] - Relative unblocking position, wherein the blocking member 4' can move with at least one degree of freedom relative to the upstream transmission member 5'.

[0156] In this embodiment, in the relatively unblocked position, the downstream drive member 6' is allowed to rotate about the rotation axis C relative to the upstream drive member 5', thereby ensuring additional degrees of freedom relative to the relatively blocked position.

[0157] Specifically, in the relatively blocked position, the extension 29 of the blocking member 4' engages with the second blocking stop 17' of the downstream transmission member 6'.

[0158] In the relatively blocked position, the upstream transmission member 5' and the downstream transmission member 6' are kinematically connected due to the mechanical connection achieved by the blocking member 4'. The first driver stop 27 of the downstream transmission member 6' can drive the latch 22' to... Figure 7 The locked position is visible in the image.

[0159] In the relatively unblocked position, the extension 29 of the blocking member 4' contacts the cam surface 28 and slides on the cam surface 28.

[0160] The blocking member 4' is connected to the mechanical emergency system 23', which is configured to trigger movement of the blocking member 4' from a closed position to an open position. In the closed position, the blocking member 4' resists the transition from the blocking position to the unblocking position, such as... Figure 9 As shown, in this open position, the upstream transmission member 5' can switch from a relatively blocked position to a relatively unblocked position, as... Figure 7 As shown.

[0161] Specifically, the blocking member 4' is connected to the mechanical emergency system 23' via a pivot 30 offset relative to the axis of rotation, the mechanical emergency system including, for example, a rod or cable. Therefore, the traction force on the mechanical emergency system 23' allows the blocking member 4' to rotate about the axis, thereby releasing the rotational movement of the downstream transmission member 6' relative to the upstream transmission member 5'.

[0162] Mechanical traction can be performed in a motion that is substantially perpendicular to the axis of rotation C of the upstream transmission component 5'.

[0163] In this position, the freely rotating downstream transmission member 6' no longer restricts the latch 22', which allows the door or window to be unlocked.

[0164] One possibility is that the return member (not shown) can be associated with the blocking member 4', such as a spring.

[0165] The return component is located on the rotation axis of the blocking component 4'.

[0166] According to another embodiment, the return member is located on the rotation axis of the downstream transmission member 6'. In this case, the return member is offset relative to the blocking member 4'.

[0167] The return member is configured to bring the blocking member 4' back to its closed position.

[0168] According to one possibility, the downstream transmission member 6' may also include a return member (not shown), such as a spring.

[0169] The blocking component is located on the rotation axis of the downstream transmission component 6'.

[0170] The spring allows the downstream drive member 6' to be brought back to the blocking position relative to the blocking member 4'.

[0171] The operation of the invention according to the second embodiment is described in detail in the following paragraphs.

[0172] In the normal operating mode of the electric locks on the doors and windows of a motor vehicle (such as the trunk of a motor vehicle), the user can remotely control the electric locks via the electric actuator 24. Figure 10 As shown in the image.

[0173] The output shaft of actuator 24 drives the upstream transmission component 5' to rotate around axis C. The upstream transmission component 5' drives the downstream transmission component 6' around axis C, and the blocking component 4' ensures the kinematic connection between the upstream transmission component 5' and the downstream transmission component 6'.

[0174] Downstream transmission member 6' engages with latch 22' to move it to its closed position (e.g.) Figure 6 (visible in the middle) or to allow it to open (such as) Figure 7 (See in the middle).

[0175] In the event of an electrical fault in actuator 24 or the control of actuator 24, the transmission device 2' may be blocked.

[0176] To disengage the locking mechanism 1' of the door or window, the user applies a traction force directly or indirectly to the mechanical emergency system 23', thereby causing the blocking member 4 to rotate according to the rotation axis C parallel to the rotation axis C of the upstream transmission member 5', thus driving the upstream transmission member 5 to disengage from the blocking member 4. Figure 8 It is visible in the text.

[0177] In other words, the blocking member 4' moves from its closed position to its open position, allowing the downstream transmission member 6' to rotate freely relative to the upstream transmission member 5'. The latch 22' is then released, and the lock 32 of the door or window can be opened.

[0178] To reset the locking mechanism 1', once the fault of actuator 24 or the control of actuator 24 is resolved, the upstream transmission member 5' can be driven to rotate in the unlocking direction to eliminate the contact between the latch 22' and the downstream transmission member 6'.

[0179] Then, with the aid of the return member, the downstream transmission member 6' is rotated back to the relative blocking position. At the same time, the extension 29 of the blocking member 4' is supported against the cam surface 28 by the action of the return member until it exceeds the blocking stop 17'.

[0180] Once past the blocking stop 17', the blocking member 4" returns to the closed position via the return member, which corresponds to the blocking position relative to the downstream transmission member 6', such as... Figure 9 As shown.

[0181] Once these steps are performed, the electric locking of lock 32 can be performed again electrically.

[0182] The advantages provided by this invention are as follows:

[0183] Mechanical emergency systems 23, 23' allow for the mechanical locking / unlocking of vehicle doors and windows when an electrical fault affects a motor vehicle.

[0184] Therefore, the solution allows for the release of the latches 22, 22' of the transmission devices 2, 2' and reduces the effort required to disengage the upstream transmission components 5, 5' and the blocking components 4, 4'.

[0185] Finally, when the locking mechanisms 1 and 1' become operable again, the solution is designed to reset the transmission devices 2 and 2'.

[0186] Due to this design, activation of the mechanical emergency system 23 requires only friction to release the function of the transmission device 2. In fact, the electrical traction force of the actuator 24 is converted into the mechanical traction force of the blocking member 4 through friction at the contact surface 12.

[0187] It should be noted that the locking function of the mechanical emergency system can also be shared with the mechanical unlocking emergency function. In this case, it acts on the pawl 25 of the lock 32, allowing a single command to disengage the two kinematic chains used to lock or unlock the door or window.

Claims

1. A locking mechanism for doors and windows of a motor vehicle, comprising: The lock (32) for locking the door or window includes a pawl (25) and a latch (22), the pawl and the latch being configured to cooperate to allow locking or unlocking the door or window; Electric actuator (24); The transmission device (2, 2') is configured to transmit the motion of the electric actuator (24) to the latch (22) so that the latch (22) of the lock (32) is displaced between an unlocked position and a locked position, in which the latch (22) is released from the pawl (25) and in which the latch (22) is blocked by the pawl (25) in the locked position; The transmission device (2, 2') includes: The downstream transmission component is configured to transmit motion to the latch (22). The upstream transmission member (5, 5') is configured to transmit motion from the electric actuator (24) to the downstream transmission member; and The blocking member (4, 4') is movable relative to the downstream transmission member and / or the upstream transmission member (5, 5'), and the blocking member (4, 4') is configured to define together with the upstream transmission member (5, 5') and / or the downstream transmission member: In a relative blocking position, the blocking member (4, 4') cooperates with the upstream transmission member (5, 5') and / or the downstream transmission member to allow motion to be transmitted between the upstream transmission member (5, 5') and the downstream transmission member, and In the relative unblocking position, the blocking member (4, 4') is capable of moving relative to the upstream transmission member (5, 5') and / or the downstream transmission member according to at least one degree of freedom; The blocking member (4, 4') is movable between an open position and a closed position. In the open position, the upstream transmission member (5, 5') and / or the downstream transmission member is able to switch from the relative blocking position to the relative unblocking position. In the closed position, the blocking member (4, 4') resists the switch from the blocking position to the unblocking position. The blocking member (4) includes a contact surface (12) configured to contact the upstream transmission member (5) and / or the downstream transmission member, and the blocking member (4) is guided between the closed position and the open position along a path included in the plane of the contact surface (12). The blocking member (4) is rotatable about the rotation axis (A), and the contact surface (12) is perpendicular to the section orientation that connects the rotation axis (A) to the surface (12).

2. The locking mechanism according to claim 1, wherein, The blocking member (4, 4') is connected to a mechanical emergency system (23, 23'), which is configured to trigger a transition between the relative blocking position and the relative unblocking position of the blocking member (4, 4') and the upstream transmission member (5, 5') and / or the downstream transmission member.

3. The locking mechanism according to claim 1 or 2, wherein, The blocking member (4) includes a cam surface (31) configured to displace the blocking member (4) under the action of a thrust from the upstream drive member (5) and / or the downstream drive member, so as to position the upstream drive member (5) and / or the downstream drive member and the blocking member (4) in the relative blocking position.

4. The locking mechanism according to claim 1 or 2, wherein, The downstream drive member (6') includes a cam surface (28) configured to guide the blocking member (4') relative to the upstream drive member (5') under the rotational action of the upstream drive member (5') in order to position the upstream drive member (5') and the blocking member (4') in the relative blocking position.

5. The locking mechanism according to claim 1 or 2, wherein, The downstream drive member and / or the upstream drive member (5, 5') includes a return device (18) configured to apply a return force to the blocking member (4, 4') toward the closed position of the blocking member (4, 4').

6. The locking mechanism according to claim 1 or 2, wherein, The downstream transmission member and / or the upstream transmission member (5) includes a stop (17) configured to block the blocking member (4) in a closed position.

7. The locking mechanism according to claim 1 or 2, wherein, The blocking member (4, 4') is configured to be moved from the closed position to the open position by mechanical traction of the mechanical emergency system (23, 23').

8. The locking mechanism according to claim 3, wherein, The cam surface (31) of the blocking member (4) is configured to shift the blocking member (4) between the closed position and the open position of the blocking member (4) under the action of the thrust from the upstream transmission member (5).

9. A motor vehicle comprising a locking mechanism for doors and windows according to any one of claims 1 to 8.

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