Dual-pull automatic reset latching system

Abstract

A dual-pull automatic reset latching system for operating in both unpowered and powered conditions. The latching system includes a release system, a release lever, and a coupling lever. The release lever is pivotally coupled to a fixed structure about a first axis. The coupling lever is pivotable about a second axis that is offset from the first axis and is configured to couple the release lever to the release system in both the unpowered condition and upon two actuations of the release lever. The coupling lever is further configured to maintain decoupling of the release lever from the release system in the powered condition.

Description

Technical Field

[0001] This article discloses information about door locks, particularly double-pull automatic reset latch systems. Background Technology

[0002] In some vehicles, the door may include an electrically operated release lock with an internal release handle, but may not have a mechanical external release lever, may not have a key-operated release lever, or may include a child lock. Various government regulations or other requirements may mandate that such a system have a double-pull release mechanism. In the absence of power, the first pull of the release cable may not release the latch, but may couple the release cable to the latch release system. When the release cable is pulled a second time, the latch will be released.

[0003] In a powered environment, the first pull may not release the latch, requiring the system to reset and completely decouple the cable and release system again before the second pull. This renders the second pull functionally identical to the first (i.e., the latch is not released). Since the double-pull release system is mechanical, it must be electrically reset by a motor before the second pull occurs. Unfortunately, timing often becomes problematic. That is, when does the system decouple and recouple during the first pull? Furthermore, a partial pull may partially unlock the system, enough to release it, but not reset it. Additionally, two rapid, consecutive pulls may release the door and reset it before the system commands the controller to power the motor. Therefore, an improved locking system and operating method would be preferable. Summary of the Invention

[0004] According to a non-limiting exemplary embodiment, a double-pull, self-resetting door lock system includes a release lever, a connecting lever, a reset lever, an overriding link, and a biasing member. The release lever is adapted to pivot about a first axis and in a first rotational direction during manual operation, and includes a stop surface circumferentially facing the first rotational direction. The connecting lever is adapted to rotate about a second axis offset from the first axis and rotates between coupled and decoupled states, contacting the stop surface in the coupled state and circumferentially spaced from the stop surface in the decoupled state. The reset lever is adapted to rotate about a third axis and includes a first blocking surface facing a second rotational direction opposite to the first rotational direction relative to the third axis. The overriding link pivotally engages with the connecting lever and is adapted to rotate about a fourth axis. The overriding link includes a second blocking surface radially outward relative to the fourth axis. The biasing member is adapted to apply a biasing force to the connecting lever relative to the second axis in the first rotational direction. Upon initial manual actuation of the release lever, the overriding link is used to make circumferential contact with the reset lever relative to the third axis, such that the reset lever is driven in the opposite direction to the connecting lever in the first rotational direction, the connecting lever is in a decoupled state, and the connecting lever is in contact with the first blocking surface. When the release lever is manually driven, the connecting rod is spaced apart from the first sealing surface and in contact with the second sealing surface, and the connecting rod is in a decoupled state.

[0005] In addition to the above embodiments, the double-pull automatic reset latch system also includes an automatic reset switch configured to activate when the first blocking surface disengages from the connecting rod and the second blocking surface contacts the connecting rod.

[0006] In another non-limiting embodiment, a double-pull automatic reset door lock system includes: a release system adapted to unlock when energized; a release lever pivotally engaged with a fixed structure, wherein manually actuating the release lever when energized does not couple the release lever with the release system, while a second consecutive manual actuation of the release lever when de-energized couples the release lever with the release system, thereby achieving manual unlocking; a connecting rod pivotally engaged with the release lever about a second axis, wherein the connecting rod contacts the release system when coupled; a control link engaging with the release lever pivotally about a third axis; and a reset lever rotatably engaged with the fixed structure about a fourth axis, adapted to reset the system to its original position after manual operation of the release lever and when energized, while the release lever remains decoupled from the release system.

[0007] In addition to the above implementation scheme, during the initial manual drive of the release lever, the connecting rod contacts the reset lever, thereby preventing the connecting rod from connecting the release lever to the release system.

[0008] In the above embodiments, as an alternative or supplement, continuous manual operation of the release lever achieves a blocking transition, wherein the contact between the connecting lever and the reset lever is released, and the connecting lever transitions to sliding contact with the overdrive linkage.

[0009] In the above implementation scheme, as an alternative or supplement, the overdrive linkage contacts the reset lever, thereby driving the reset lever when the release lever is manually activated.

[0010] In addition to the above implementation scheme, the double-pull automatic reset latching system also includes a gear origin switch configured to be activated when the release lever is manually driven for the first time; and an electronic controller configured to receive a gear drive signal from the gear origin switch when powered on, start a timer when the drive signal is received, and energize the electric motor of the release system when the timer ends, so that the system resets to the origin position.

[0011] In the above embodiments, as an alternative or supplement, the double-pull automatic reset latch system includes an automatic reset switch configured to be activated after the first manual operation of the release lever and when powered on, wherein the electronic controller is configured to receive a reset drive signal from the automatic reset switch when powered on and to energize the electric motor to reset the system to its original position.

[0012] In the above embodiments, as an alternative or supplement, the double-pull automatic reset latching system includes a switch linkage adapted to drive the automatic reset switch, wherein the switch linkage and the release lever are pivotally connected about a third axis.

[0013] In the above embodiments, as an alternative or supplement, the double-pull automatic reset latch system includes a reset lever that engages with a motor-driven gear, wherein the reset lever and the gear are adapted to rotate about a fourth axis, and the gear origin switch is activated by contacting the reset lever.

[0014] In the above embodiments, as an alternative or supplement, the double-pull automatic reset latch system includes a control link that engages with a release lever pivot about a third axis, wherein the control link is adapted to engage with a reset lever to drive the reset lever about a fourth axis when the release lever is manually actuated. Actuation of the reset lever causes a transition of resistance to the connecting rod to maintain decoupling of the release lever from the release system.

[0015] In another non-limiting embodiment, a method of operating a double-pull automatic reset latch system includes: first, rotating a release lever from its origin position about a first axis in the absence of power, wherein the release lever engages with a fixed structure pivotally about the first axis; blocking engagement of the connecting lever with the release system by contacting a reset lever for engaging the release system, wherein the connecting lever pivotally engages with the fixed structure about a second axis, and the reset lever pivotally engages with the fixed structure about a third axis; and during the first pivot, contacting an overriding link with the reset lever, wherein the overriding link pivotally engages with the release lever about a fourth axis. The overdrive linkage contacts the reset lever and reverses the reset lever during a sustained first pivot; during the sustained first pivot, the connection lever is released from contact with the connecting lever, while the connecting lever and the overdrive linkage are slidably contacted to overcome the obstruction of the connecting lever; the reset lever is released from the overdrive linkage during a sustained first pivot; the obstruction of the connecting lever is released; the overdrive linkage is fixed to the connecting lever by a sustained first pivot; the release lever is engaged with the release system by connecting the release lever and the release system through the connection of the connecting lever; and a second rotation of the release lever is performed to manually drive the release system in the absence of power supply.

[0016] Furthermore, in the above-described implementation scheme, the first, second, third, and fourth axes are spaced apart and parallel to each other.

[0017] In the aforementioned implementation scheme, as an alternative or supplement, the second pivot of the release lever will not manually activate the release system when energized.

[0018] In an alternative or supplemental embodiment, in the aforementioned implementation, the method includes first pivoting a release lever around a first axis while powered on; blocking the connection between the connecting lever and the release system by contact between the connecting lever and a reset lever for engaging the release system; contacting the overdrive linkage with the reset lever during the first pivot; reverse-driving the reset lever by contact between the overdrive linkage and the reset lever during a sustained first pivot; transitioning the blocking of the connecting lever by releasing the contact between the connecting lever and the reset lever while simultaneously sliding the connecting lever to the overdrive linkage during a sustained first pivot; activating a gear origin switch by contact between the gear origin switch and the reset lever when the reset lever is reverse-driven; starting a timer when the gear origin switch is activated while powered on; and resetting the system to the origin position after a predetermined time has elapsed while powered on.

[0019] In the aforementioned implementation, as an alternative or supplement, the gear origin switch is configured to control the motor of the release system and shut down the motor in an automatic reset event to prevent motor stall.

[0020] In an alternative or supplemental embodiment, the method includes releasing the reset lever from the overriding linkage at a continuous first pivot when powered; and activating the automatic reset switch by contact between the automatic reset switch and the switch linkage, wherein the switch linkage is pivotally connected to the release lever about a fourth axis.

[0021] In the above implementation scheme, as an alternative or supplement, the automatic reset switch is configured to control the motor of the release system upon startup.

[0022] In the aforementioned implementation, as an alternative or supplement, the method includes returning the system to its origin position by driving a reset lever via a motor when powered. Attached Figure Description

[0023] The following description should not be considered as limiting. Referring to the accompanying drawings, elements of the same type are numbered the same: Figure 1 This is a perspective view of a double-pull, self-resetting latching system according to a non-limiting exemplary embodiment of the present disclosure; Figure 2 These are partial plan views and partial schematic diagrams of the power release system of a double-pull automatic reset latching system; Figure 3 This is a 3D diagram of the power release system; Figure 4 This is a partial, unassembled 3D view of a double-pull automatic reset latch system; Figure 5 This is an unassembled 3D view of the gears and reset lever of a double-pull automatic reset latch system; Figure 6 This is another unassembled perspective view of the gears and reset lever of the double-pull automatic reset latch system; Figure 7 This is a partial perspective view of a double-pull automatic reset latch system in a decoupled state; Figure 8 This is another partial perspective view of the double-pull automatic reset latch system in a decoupled state; Figure 9 This is a partial plan view of a double-pull automatic reset latch system in a coupled state; Figure 10 This is a partial plan view of a double-pull automatic reset latch system in a coupled state; Figure 11 This is a partial plan view of the double-pull automatic reset latch system in a decoupled state, in which the release lever of the double-pull automatic reset latch system is manually rotated by about three degrees by the first pull, thereby making the reset lever contact with the over-control link of the double-pull automatic reset latch system; Figure 12AThis is a partial plan view of the double-pull automatic reset latch system in the decoupled state, in which the release lever of the double-pull automatic reset latch system is manually rotated by about six degrees by the first pull, thereby promoting the excessive blocking of the connecting lever of the double-pull automatic reset latch system; Figure 12B Is with Figure 12A A similar partial plan view viewed from the opposite side; Figure 13 This is a partial plan view of the double-pull automatic reset latch system in the decoupled state, in which the release lever of the double-pull automatic reset latch system is manually rotated by about nine degrees by the first pull, thereby activating the gear origin switch of the double-pull automatic reset latch system; Figure 14 This is a partial plan view of the double-pull automatic reset latch system in the decoupled state, in which the release lever of the double-pull automatic reset latch system is manually rotated by about twenty degrees by the first pull, thereby facilitating the release of the over-control linkage from the reset lever; Figure 15 This is a partial plan view of the double-pull automatic reset latch system in the decoupled state, in which the release lever of the double-pull automatic reset latch system is manually rotated by about twenty-two degrees by the first pull, and the switch connection of the double-pull automatic reset latch system drives the automatic reset switch of the double-pull automatic reset latch system. Figure 16 This is a partial plan view of the double-pull automatic reset latch system in the decoupled state, in which the release lever of the double-pull automatic reset latch system is manually rotated by about 28 degrees by the first pull, and roughly illustrates the initial unlocking state of the connecting rod; Figure 17 This is a partial plan view of the double-pull automatic reset latch system under the conditions of no power and automatic reset mode "off", in which the release lever of the double-pull automatic reset latch system is manually rotated by about 28 degrees by the first pull, and the connecting rod moves towards the coupling state; Figure 18 Is with Figure 17 A partial plan view of a similar double-pull automatic reset latch system under no-power conditions and automatic reset mode "off" conditions, illustrating a component of the release lever sliding in contact with the power release lever of the double-pull automatic reset latch system; Figure 19 Is with Figure 18 A partial plan view of a similar double-pull automatic reset latch system under no-power conditions and automatic reset mode "off" conditions, illustrating the end of the first pull and the coupling state; Figure 20 This is a partial perspective view of a double-pull automatic reset latch system in another embodiment under decoupled conditions; Figure 20A It shows in Figure 20 Some changes have occurred. Figure 7 Part of it; Figure 21 This is another partial perspective view of a double-pull automatic reset latch system in a decoupled state, according to another embodiment. Figure 22 This is a partial plan view of a double-pull automatic reset latch system under no-power conditions and automatic reset mode "off" conditions in another embodiment of this disclosure, wherein the release lever of the double-pull automatic reset latch system is manually rotated by about 28 degrees by a first pull, and the connecting rod moves toward the coupling state; Figure 22A It shows in Figure 22 Some changes have occurred. Figure 17 Part of it; Figure 23 and Figure 24 Other features of embodiments of this disclosure are shown; and Figures 25-44 Other features of one embodiment of this disclosure are shown. Detailed Implementation

[0024] One or more embodiments of the disclosed apparatus and method will be described in detail herein by way of example and not limitation, with reference to the accompanying drawings.

[0025] Now for reference Figure 1 The figure shows a double-pull automatic reset latching system 20, with a portion of the housing removed to reveal internal details. The latching system 20 includes a fixing structure (such as housing 22), a release lever 24 (i.e., a cable or manual release lever), a release system 25 (such as a power release system), a connecting lever 28, a control linkage 30, and a reset lever 34 (see also...). Figure 5 and Figure 6 The latching system 25 may include a power release lever 26, a gear 32, an electric motor 40, and a worm gear 42. The motor 40 of the release system 25 drives (i.e., rotates) the worm gear 42, which in turn drives the gear 32 about a rotation axis 48 and in a rotational drive direction relative to the rotation axis 48 (see arrow 50). The rotation of the gear 32 drives the power release lever 26, which rotates about a pivot axis 52 in the same drive direction 50 (clockwise, as shown) but relative to the pivot axis 52. As the power release lever 26 pivots in direction 50, the latching system 20 generally moves toward the unlocked state. In one embodiment, the rotation axis 48 and the pivot axis 52 are substantially parallel and spaced apart from each other.

[0026] The latching system 20 may further include an electronic controller 53, which may include a processor (e.g., a microprocessor) and an electronic storage medium that may be non-transitory. The processor includes a timer 55, and the electronic storage medium includes a pre-programmed time period applied by the processor's timer 55. An automatic reset switch 44 is configured to send a reset actuation signal 57 to the controller 53, which processes the signal 57 and outputs a command or activation signal 59 to the electric motor 40. A gear origin switch 46 is configured to send a reset drive signal 61 to the controller 53. The controller 53 may then start the timer 55 and send a command or activation signal 63 to the motor 40 after a preset time period. It is conceivable and understood that system 20 may include multiple controllers and / or each switch 44, 46 may include an integrated controller.

[0027] Reference Figure 2 and Figure 3 The release system 25 of the latching system 20 may also include a biasing member 54 (e.g., a helical torque spring), a pawl 56, a claw 58, and a firing pin 60. The pivoting movement of the power release lever 26 in the drive direction 50 counteracts the biasing force applied by the biasing member 54 (see arrow 62) and facilitates the actuation (e.g., rotation) of the pawl 56 to actuate the claw 58 and release it from the firing pin 60. The pawl 56 and claw 58 are rotatably mounted on the housing 22, while the firing pin 60 is typically mounted on a fixed structure (e.g., a door frame).

[0028] The gear 32 of the release system 25 includes a disc component 64 and a cam component 66, the disc component 64 having a plurality of gear teeth that engage with the worm gear 42. The cam component 66 may be rigidly connected to the disc component 64. In one embodiment, the gear 32 may be a single piece and may be made of injection-molded plastic.

[0029] In one embodiment, the power release lever 26 of the release system 25 extends radially outward from the pivot axis 52 and extends to a segment 68 (e.g., a distal segment) that may be positioned beyond the axis of rotation 48. The distal segment 68 includes a cam portion 70 adapted to operatively contact or engage with a cam member 66 of the gear 32. The cam member 66 and the cam portion 70 of the gear 32 may be circumferentially opposed to each other. The cam member 66 generally faces the drive direction 50, while the cam portion 70 generally faces a circumferential direction opposite to the drive direction 50 (see arrow 72).

[0030] In one embodiment, the cam component 66 of gear 32 and the cam portion 70 of power release lever 26 are shaped to facilitate low-speed, high-torque operation of power release lever 26 to initially release pawl 58 from striker pin 60. After release, as power release lever 26 continues to rotate in the drive direction 50, the motion of power release lever 26 can transition to a high-speed, low-torque state. In one example, to facilitate the desired change in operating state, cam component 66 and cam portion 70 may each be serpentine or other complex shapes to facilitate the desired speed and torque variations.

[0031] The latching system 20 is adapted to require the user to manually pull twice to actuate the release system 25 and release the pawl 58 from the striker 60 in the absence of power (i.e., no electricity). More specifically, in the absence of power before and after the first pull of the release lever 24, the release lever 24 remains "decoupled" from the release system 25. The release lever 24 only engages (i.e., couples) with the release system 25 upon the second pull, allowing manual release of the pawl 58 from the striker 60. In the presence of power (the system is configured to be driven by the electric motor 40), the latching system 20 is adjusted to maintain the release lever 24 "decoupled" from the release system 25, regardless of the number of times the user manually pulls it.

[0032] Therefore, one function of the latching system 20 is to reset the system during the first pull event, but before the second pull event occurs when powered on (i.e., to achieve decoupling). Another function of the system 20 is to prevent partial coupling. That is, if the system 20 enables partial pulling to couple the system, then if two pulls are completed quickly in succession, the system may have a minimum time to reset, and the pawl 58 may be released from the striker 60.

[0033] Reference Figure 1 and Figure 4 Release lever 24 is pivotally engaged with housing 22, configured to rotate about pivot axis 52, and directly connected to release cable (not shown). Release cable is typically a mechanical element that is gripped and pulled by the user. When pulled, release lever 24 pivots about pivot axis 52 in the direction of rotation 50 (see [link to relevant documentation]). Figure 4 ).

[0034] The power release lever 26 pivots with the release lever 24, rotates about pivot axis 52, and, as previously described, is adapted to release the pawl 58 from the striker 60. The connecting lever 28 is pivotally connected to the housing 22, configured to rotate about axis 73, and facilitates the coupling and decoupling of the release lever 24 from the power release lever 26. The overriding link 30 and the switch link 38 pivot with the release lever 24 and rotate about axis 74. Pivot axes 52, 73, and 74 are substantially parallel and spaced apart from each other.

[0035] like Figure 4 As shown, the release lever 24 includes first and second arms 76, 78, each extending radially outward from pivot axis 52. The first arm 76 has circumferentially opposing faces 80, 82 that at least partially define an opening 84. The second arm 78 may be approximately diametrically opposed to the first arm 76 and projects radially to a distal end 86. The connecting lever 28 includes a member 88 extending radially outward from axis 73 and extending axially through the opening 84 of the first arm 76. The overdrive linkage 30 is pivotally connected to the distal end 86 of the second arm 78 and about axis 74.

[0036] During operation, surface 80 acts as a hard stop at the origin of connecting rod 28. When in the coupled state, connecting rod 28 rests against surface 80. Surface 82 may never contact connecting rod 28, but only provides a gap in slot or opening 84 so that connecting rod 28 can complete its full stroke.

[0037] Reference Figure 1 , Figure 5 and Figure 6 The reset lever 34 may be disc-shaped and adapted to rotate about the axis of rotation 48. When the system 20 is decoupled, the reset lever 34 is typically held in the decoupled position by any number of factors. For example, the torque required to reverse the drive gear 32 is sufficient to prevent movement of the reset lever 34, and no additional external force can provide sufficient torque on the reset lever 34 to reverse the electric motor 40. Furthermore, the reset lever 34 may include a blade lug 89 (see...). Figure 5 and Figure 6 The blade lug generally extends radially outward relative to the axis of rotation 48. The blade lug 89 is adapted to bias the reset rod 34 to its home position or maximum stroke position (i.e., the decoupled position). Further methods for biasing the reset rod 34 can be considered, including the use of an eccentric spring.

[0038] Reference Figure 1 , Figure 7 and Figure 8 The diagram illustrates the latching system 20 in its decoupled state. When decoupled from the release system 25, the reset lever 34 opens the connecting lever 28, thus decoupling the connecting lever 28 from the power release lever 26. When the connecting lever 28 is open, the component 88 of the connecting lever 28 can approach (but not contact) the surface 82 of the release lever 24 and is spaced apart from the surface 80. The rotational position of the connecting lever 28 can be fully controlled by the reset lever 34 and / or the override linkage 30. When the system 20 is coupled, the connecting lever 28 contacts the surface 80, which acts as a hard stop, and the rotational position of the connecting lever 28 is no longer controlled by the reset lever 34 or the override linkage 30.

[0039] When decoupled, if release lever 24 is rotated, connecting lever 28 will move with release lever 24, but release lever will not move power release lever 26 on the first pull. Connecting lever 28 pivots on release lever 24. Therefore, whenever release lever is actuated, connecting lever 28 will translate or rotate with release lever 24. Actuating release lever 24 does not directly affect the rotational position of connecting lever 28. Therefore, for example, when system 20 is coupled, connecting lever 28 will not rotate about axis 73. When decoupled, the rotational position of connecting lever 28 relative to axis 73 is controlled by reset lever 34 or overriding linkage 30. When connecting lever 28 becomes coupled, surface 80 controls the rotational position.

[0040] When in the decoupled state, the latching system 20 is in the origin position. The origin position refers to the position at the start of the first manual pull with or without power.

[0041] Reference Figure 1 , Figure 9 and Figure 10 The diagram illustrates the coupling state of the latching system 20. During coupling, the connecting rod 28 engages with, or is coupled to, the power release rod 26 of the release system 25. If the release rod 24 rotates in the rotation direction 50 (see...), Figure 9 The power release lever 26 will move together with the connecting lever 28 because the component 88 of the connecting lever 28 contacts the surface 80 of the release lever 24 (see also...). Figure 4 As an example, Figure 15 and Figure 16 This describes the result of the first manual pull after the automatic reset operation was successful, with the power on. Figure 9 and Figure 10 This demonstrates the successful result of the first manual pull when the power is off (or the automatic reset mode is off).

[0042] During operation, the connecting rod 28 engages (i.e., couples) the release rod 24 of the release system 25 (see...). Figure 9 and Figure 10 ) or break away (see Figure 7 and Figure 8 The power release lever 26 of the release system 25 and the connecting lever 28 can be "blocked" in two ways. For the first method, the reset lever 34 connected to the gear 32 (see also...) Figure 5 and Figure 6 The connecting rod 28 is configured to block the connecting rod. In the second configuration, the overdrive link 30 assists in blocking the connecting rod 28.

[0043] Reference Figure 8 and Figure 11The blocking is achieved by the second lug 96 of the reset lever 34, which drives and holds the connecting lever 28 open. If the reset lever 34 and gear 32 are in a reverse-drive state, the blocking surface 95 of the circumferentially facing second lug 96 no longer contacts the connecting lever 28, and the spring 100 on the connecting lever 28 will begin to move the connecting lever to the coupling state. For example, in the first pull of system 20, the overdrive linkage 30 begins to reverse-drive the reset lever 34. When this happens, the reset lever 34 begins to allow the connecting lever 28 to move toward the coupling state. However, as the connecting lever 28 moves toward the coupling state, the connecting lever 28 contacts the second blocking surface 110 of the overdrive linkage 30 (see...). Figure 12A When this occurs, the reset lever 34 continues to reverse drive. With continued reverse drive, the reset lever 34 no longer controls the position of the connecting rod 28; instead, the overdrive linkage 30 controls the position of the connecting rod 28.

[0044] With continued operation, and as release lever 24 is further pulled, reset lever 34 is driven in the complete reverse direction, and the inclined surface feature 112 of housing 22 forces overdrive linkage 30 to rotate. This rotation first disengages overdrive linkage 30 from the reverse drive of reset lever 34, and then, as the stroke continues, reset lever 34 disengages from connecting rod 28 (see...). Figure 16 and Figure 17 At this point, two automatic reset scenarios may occur. In the power-on state (i.e., automatic reset mode), after the overdrive linkage 30 disengages from the reset lever 34, gear 32 immediately drives the reset lever 34 back to the coupling position (see...). Figure 16 The purpose is to block the connecting rod 28 again before it has a chance to disengage from the second blocking surface 110 (i.e., never completely release the blockage). In the power-off mode, the reset rod 34 does not move, and when the second blocking surface 110 disengages, the connecting rod 28 moves fully to the coupling position and hard stops on the surface 80.

[0045] The overdrive linkage 30 can also be used to release the lock on the reset lever 34 and reverse the drive of the gear 32. During the movement of the release lever 24 in the decoupled state, the overdrive linkage 30 can first begin to release the lock on the reset lever 34, which also reverses the drive of the gear 32. Once the reset lever 34 no longer obstructs the connecting lever 28, the overdrive linkage 30 will disengage from the reset lever 34.

[0046] At this time, the automatic reset switch 44 (see...) Figure 1 The release system 25 is activated. If the release system 25 is energized, gear 32 (i.e., driven by motor 40) will drive reset lever 34 back to the blocking position (see also...). Figure 16 and Figure 17Once the release lever 24 returns to its original position and is pulled once, it can be driven in the reverse direction again. Without power, the overdrive linkage 30 will continue to travel, and due to the housing features of system 20, it will rotate and disengage from or detach from the connecting rod 28, thus facilitating complete decoupling of system 20. At this point, the connecting rod 28 can freely re-engage with the release system 25. When the release lever 24 returns to its original position, the connecting rod 28 will connect the release lever 26 to the power release lever 26, allowing the pawl 58 to be released from the striker 60 on the second pull.

[0047] Reference Figure 6 A lug 94 on the reset lever 34 engages with the inner side of the gear 32. When the reset lever 34 rotates, the position of the lug 94 causes the gear 32, worm gear 42, and motor 40 to drive in opposite directions. Conversely, if the gear 32 rotates in the opposite direction, the lug 94 causes the reset lever 34 to be driven back to its initial position. In another embodiment, the gear 32 and the reset lever 34 can be a single component (i.e., a single unit).

[0048] To enable automatic reset (i.e., reset between the first and second pulls), system 20 includes an automatic reset switch 44 and a gear origin switch 46 (see [link to system 20]). Figure 1 The gear origin switch 46 is controlled by the reset lever 34 (see also...). Figure 7 The radial compression portion 90 of gear 32 is activated. The automatic reset switch 44 is activated at a designated point in the stroke of the release lever 24 and can be directly activated by the switch linkage 38 (see [link]). Figure 1 ).

[0049] During operation, when system 20 is connected, switch linkage 38 actuates automatic reset switch 44 (see...). Figure 1 , Figure 9 and Figure 10 Actuation of switch 44 energizes motor 40, causing motor 40 to drive gear 32 in the direction of rotation 72. The stop 92 of gear 32 and the reset lever 34 (see...) Figure 4 The lug 94 rotates and engages, thereby moving from the coupled state (see...) Figure 10 Driven to a decoupled state (see) Figure 8 When the gear 32 rotates along the direction 72, the reset rod 34 rotates together with the gear 32. Additionally, when rotating along the direction 72, the second lug 96 of the reset rod 34 contacts the distal end of the extension 98 of the connecting rod 28, causing the connecting rod 28 to rotate about the axis 73 along the direction 72. Once the connecting rod 28 is in the decoupled state, the overdrive linkage 30 can freely rotate to its decoupled state using the biasing force of a biasing member (e.g., a helical spring 100).

[0050] Reference Figure 11The diagram illustrates the decoupled state of system 20. During operation, when the user pulls the cable (not shown, direction indicated by arrow 102), the release lever 24 begins to rotate about pivot axis 52 in direction 50. During this initial stroke, initial contact is established between the contact surface 104 of the reset lever 34 and the distal end 106 of the overdrive linkage 30. Contact surface 104 faces either the circumferential direction or the rotational direction 72.

[0051] Reference Figure 12A and Figure 12B The continued rotation of the release lever 24 in direction 50 (e.g., from approximately three degrees to approximately six degrees) facilitates the blocking transition. More specifically, when the reset lever 34 is reverse-driven (i.e., in direction 50) through contact between the distal end 106 of the overriding link 30 and the contact surface 104 of the reset lever 34, the reset lever 34 no longer blocks the connecting lever 28 because the extension 98 of the connecting lever 28 is now circumferentially spaced from the second lug 96 of the reset lever 34. Instead, the connecting lever 28 is now blocked by the overriding link 30. More specifically, the second radial extension 108 of the connecting lever 28 contacts or abuts the second blocking surface 110 of the overriding link 30, which is radially outward relative to the axis 74. It is understood that the term "reverse drive" refers to the mechanical rotation of the gears, where the gears rotate the worm gear 42 and the motor 40. The term "drive" refers to providing electricity to the motor 40 to drive the working worm gear 42 and the gear 32.

[0052] Reference Figure 13 The release lever 24 continues to rotate in direction 50 (e.g., from approximately six degrees to approximately nine degrees), causing the gear origin switch 46 to be activated due to its location on the pressing portion 90 of the reset lever 34. At this time, the connecting lever 28 is still blocked, and the system 20 is in a decoupled state.

[0053] like Figure 12A As shown, spring 100 affects the overdrive linkage 30 and connecting rod 28. Figure 12A From the perspective of the spring 100, the spring 100 biases the connecting rod 28 in the clockwise direction and the over-control connecting rod 30 in the counterclockwise direction.

[0054] Refer again Figure 1 When powered on, timer 55 is started after gear origin switch 46 sends signal 61 to controller 53 during the first partial pull. If the first pull is not fully completed and automatic reset switch 44 is not activated, controller 53 sends command signal 63 to motor 40 before a preset time period has elapsed. Motor 40 can then drive gear 32 to the origin position. It is conceivable and understandable that gear origin switch 46 and controller 53 can also be configured to de-energize motor 40 during an automatic reset event to prevent motor 40 from stalling during a hard stop.

[0055] Reference Figure 14 The continued rotation of the release lever 24 in direction 50 (e.g., from approximately nine to approximately twenty degrees) causes the distal end 106 of the overrunning link 30 to lie on the inclined feature 112 of the housing 22. This sliding contact causes the overrunning link 30 to rotate about axis 74 in the rotation direction 72, against the biasing force of the spring 100, until the distal end 106 radially disengages from the contact surface 104 of the reset lever 34. Thus, the overrunning link 30 is disengaged from the reset lever 34. At this point, the connecting rod 28 is still blocked, and the system 20 is in a decoupled state (see also...). Figure 18 ).

[0056] Reference Figure 15 The release lever 24 continues to rotate in direction 50 (e.g., from approximately twenty degrees to approximately twenty-two degrees), causing the switch linkage 38 to move onto the automatic reset switch 44 and activate the automatic reset switch. At this time, the linkage 28 remains in a blocking state (i.e., the extension 108 is in contact with the second blocking surface 110), and the system 20 is in a decoupled state.

[0057] The automatic reset switch 44 is activated to send a signal to the motor 40, driving the gear 32 to rotate in the direction of 72. As the gear 32 rotates in the direction of 72, it carries the reset rod 38 until the second lug 96 contacts the distal end of the extension 98 of the connecting rod 28 again.

[0058] Reference Figure 16 Release lever 24 continues to rotate in direction 50 (e.g., from approximately 22 degrees to approximately 28 degrees), continuing to block connecting lever 28, thus decoupling the system. Override linkage 30 cannot reverse-drive reset lever 34 until override linkage 30 returns to its origin. Override linkage 30 is used to keep connecting lever 28 blocked until reset lever 34 reaches approximately 28 degrees of travel. The additional six degrees of travel provide a time window for automatic reset of the system, preventing coupling until connecting lever 28 is fully released. Figure 16 The diagram illustrates a position (approximately 28 degrees of travel) where the overdrive linkage 30 does not obstruct the connecting rod 28 in the absence of power.

[0059] Reference Figures 17 to 19In the absence of power and / or with the automatic reset mode "off," during the first pull, the connecting rod 28 is not obstructed by the overriding link 30 (e.g., at approximately 28 degrees). Instead, the connecting rod 28 can rotate freely in direction 72 and obstruct the overriding link 30. More specifically, the extension 108 exits the second obstructing surface 110 of the overriding link 30 and rotates about axis 73 in direction 72 until the extension 108 contacts the circumferential surface 114 of the overriding link 30. This contact moves the distal end 106 of the overriding link 30 away from the reset rod 34. At approximately the same time, the component 88 of the connecting rod 28 slides into contact with the circumferential extension surface 116 of the power release rod 26 (see...). Figure 18 ), and until component 88 engages with power release lever 26. Engagement is complete when component 88 contacts surface 118 in the circumferential or rotational direction 72 relative to pivot axis 52 (see...). Figure 1 and Figure 19 The connecting rod 28 is currently coupled to the release system 25. The user pulls the cable a second time, at which point the system 20 is released.

[0060] This system 20 can further provide additional functionality, depending on the system to which it is applied. Rotating gear 32 in the opposite direction 72 (i.e., the reverse drive direction) can provide additional functionality, including but not limited to: power release of the latch, power locking, electronic switching between first pull release and second pull release (i.e., coupling or decoupling the system), power tightening, and others. This system 20 can also replace the latch of a conventional mechanical child lock. The system can disengage from an internal handle similar to a child lock system, but can be deactivated by returning to the decoupled state without driving a reset motor. Similarly, the child lock can be opened or closed without requiring an additional actuator or component in the system. In the event of a collision, the system can switch to first pull release or deactivate the child lock. In one scenario, if the front passenger is not present, this may allow occupants in the rear seats of the vehicle to escape.

[0061] Now please see Figures 20-24 The figure illustrates components of another embodiment of this disclosure. Figures 20-24 The diagram illustrates the improvement to the aforementioned implementation scheme. For convenience, in... Figures 20-24 The diagram only illustrates the features of components with alternative features. In other words, Figures 20-24 The components shown can be incorporated into any of the foregoing embodiments.

[0062] like Figures 20-24 As shown, another embodiment of the automatic reset actuator is illustrated. As described above, a double-pull, automatic reset latch system 20 is provided, wherein the latch resets itself before the second pull.

[0063] At least refer to now Figure 7 , Figure 8 , Figure 20 , Figure 20A and Figure 21 The mechanically built-in spring is removed from the reset lever 34. If the aforementioned spring were made of plastic, it might be prone to deformation under extreme temperatures, which could impair the function of the automatic reset actuator. To compensate for this change, the reset lever 34 now provides a retaining feature 200 for a new independent spring 202 for internal release functionality. The retaining feature 200 approaches or extends from a second lug 96 of the reset lever 34, which forms a stop surface 95. In a non-limiting embodiment, the spring 202 is a stainless steel spring.

[0064] Furthermore, at the point where the reset lever 34 first interacts with the overdrive linkage 30, the contour surface 104 of the reset lever 34, now labeled 204, has been reinforced to prevent bypassing by increasing the contact area. This also allows for a smoother transition to the disabled position of the automatic reset actuator. Figure 20A The previous profile surface and mechanical spring, which were removed from the foregoing embodiments, are also shown. In a non-limiting embodiment, the radial compression portion 90 of the reset lever 34 is integrally formed with the reinforcing portion 204 of the profile surface 104.

[0065] Now for reference Figure 22 Additional material is added to the surface of the connecting rod 28 that interacts with the overdrive linkage 30, which prevents the two parts from losing engagement when the automatic reset mechanism is not activated or when the handle is pulled a second time (in the event of loss of power).

[0066] In addition, at least as Figure 22 As shown, the improvement is achieved by changing the axis of rotation of the lug or extension 98 that interacts with the reset lever 34, making it communicate with the inner release lever 24 and allowing for a smooth transition. This extension 98 then moves circumferentially and is parallel to the axis of rotation of the inner release lever 24.

[0067] Figure 22A Explanation Figure 22 Chinese reference Figure 17 The changes made.

[0068] At least refer to now Figure 23 and Figure 24The pivot located in the inner release lever 24, where the connecting lever 28 rotates about its axis, is characterized not by a circle, but by a slot (two separate circumferences). The distance between these two circumferences, and the position of the pivot rotation from the connecting lever 28, is reduced. Whenever a second pull is achieved via the inner release lever 24 (whenever the automatic reset is released or in the event of loss of power), the component 88 in the connecting lever 28 will enter an "engaged" position; this, in turn, will cause the power release lever 26 to enter an open position. Now, the component 88 will remain in the sliding feature of the inner release lever 24, rather than in the slot; this is done to better distribute the load, as its pivot is more prone to failure if the load is applied to a smaller function of the connecting lever.

[0069] Now for reference Figures 25-44 Other features of the embodiments of this disclosure are illustrated by the following reference numerals: A) Actuator Housing – The geometry of the actuator housing has been changed to accommodate the new circuit carrier ECC and a new latch housing that introduces a clamping mechanism for the latch. Furthermore, the housing has been reinforced by adding structures inside the component assembly and on the back of the housing to prevent any deformation that might be caused by the power release or automatic reset mechanism.

[0070] B) Latch Housing – The size of the latch housing has increased due to the added clamping and overrunning mechanisms introduced by the latch. Therefore, the latch is reinforced by adding structural ribs along the clamping cable section to prevent any deformation. Another improvement is the introduction of a pivot for the pawl release lever.

[0071] C) Power Release Gear – The power release gear has its pitch and tooth rake angle modified to accommodate a worm gear designed to open under high sealing loads. Furthermore, to improve the gear's stability in the power release function, the length of its teeth is increased to improve alignment with the worm gear. Along with these changes, the cam surface where the gear interacts with the power release lever has also been modified to a new cam surface that can transmit torque from the worm motor, enabling opening under high sealing loads at extreme temperatures.

[0072] D) Power Release Lever - The position of the power release lever in contact with the power release gear has changed. This is done to accommodate changes in the cam profile, ensuring a smooth transition when the latch performs the power release function.

[0073] E) Frame – The frame was modified to accommodate the components that constitute the clamping and overdrive mechanisms. To this end, the frame was extended to include fulcrum holes for the clamping rod and overdrive linkage. Furthermore, the geometry of the frame was altered due to the housing packaging.

[0074] F) Pawl Lifter - The pawl lifter has also been modified to accommodate the introduction of a power release mechanism for the pawl release lever. During the power release function, the pawl release lever makes the first contact with the power release lever, then contacts the pawl lifter, thereby moving the pawl and releasing it.

[0075] G) Cam door opener - The cam door opener has been modified to accommodate the activation of the door opening switch.

[0076] H) Pawl Release Lever - The pawl release lever is incorporated into a mechanism to accommodate an emergency external release system. The lever rotates on its pivot through interaction with the power release lever or the aforementioned external release mechanism.

[0077] I) Overdrive Link - The profile of the overdrive link interacting with the connecting rod when the automatic reset mechanism is activated has been modified. This change is to accommodate the modification of the connecting rod. Additionally, due to the change in the reset rod, the tip of the rod has also been slightly modified.

[0078] J) Connecting Rod - The connecting rod has also been modified to prevent loss of engagement with the overdrive linkage when the automatic reset mechanism is not activated or when the handle is pulled a second time (in the event of power loss). The surface area of ​​this part has been increased to mitigate the risk of the overdrive linkage bypassing the connecting rod when the internal release handle reaches its full travel position; this is where the overdrive linkage re-engages with the connecting rod.

[0079] K) Manual Release Lever - The pivot section of the manual release lever's connecting rod has been modified. This was done to improve force distribution, ensuring the manual release lever receives the highest load, rather than the pivot, as the lever is stronger than the pivot.

[0080] L) Switch Connector - The switch connector has been extended by several millimeters to accommodate the new position of the switch in the new circuit carrier (ECC). Additionally, the cam profile of the push-button switch has been slightly reduced to avoid any excessive compression.

[0081] M) Reset lever - The mechanical spring has been removed from the reset lever. Additionally, the cam surface of the lever has been slightly reduced to prevent excessive compression and damage to the switch. Along with these changes, a retaining lug has been introduced to accommodate the new spring; this spring will help determine the active and inactive positions of the automatic reset mechanism, helping the lever hold its position until the motor is activated. The contour surface where the overdrive linkage first contacts the reset lever when the inner handle moves has also been modified for a smoother transition and to allow for a possible "exit torque" during automatic reset.

[0082] N) Gear Buffer - To accommodate changes in the actuator housing, the power release buffer has been modified. This change applies to both buffers located behind the reset lever and the power release gear (at their mounting points).

[0083] The term "approximately" is intended to include the degree of error relating to a specific number of measurements based on the equipment available at the time of submission of this disclosure.

[0084] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure. The singular forms “a,” “an,” and “the” used herein also include the plural forms unless the context clearly indicates otherwise. It will be further understood that the terms “comprising” and / or “including,” when used in this specification, specifically indicate the presence of the stated feature, integer, step, operation, element, and / or component, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0085] While this disclosure has been described with reference to one or more exemplary embodiments, those skilled in the art will understand that various changes can be made and elements can be substituted with equivalents without departing from the scope of this disclosure. Furthermore, many modifications can be made to adapt particular situations or materials to the teachings of this disclosure without departing from its essential scope. Therefore, this disclosure is not intended to be limited to the specific embodiments disclosed as the best mode for carrying out this disclosure, but rather to include all embodiments falling within the scope of the claims.

Claims

1. A dual-pull auto-reset latching system, characterized by, Include: An internal release lever for pivoting about a first axis in a first rotational direction upon actuation, the internal release lever including a stop surface circumferentially facing the first rotational direction; A connecting rod is used to move about a second axis and between a coupling condition and a decoupling condition, the connecting rod contacting the stop surface under the coupling condition and being circumferentially spaced from the stop surface under the decoupling condition, the first axis being offset from the second axis; A reset lever for rotating about a third axis, the reset lever including a first blocking surface facing a second direction, the second direction being opposite to the first rotation direction relative to the third axis; A supercontrol link, movably coupled to the connecting rod and for movement about a fourth axis, the supercontrol link including a second blocking surface radially outward relative to the fourth axis; A biasing element is used to apply a biasing force to the connecting rod relative to the second axis in the first rotational direction; When the internal release rod is initially activated, the super control linkage is used to make circumferential contact with the reinforced contour surface of the reset rod relative to the third axis, and to drive the reset rod and the connecting rod in the opposite direction along the first rotation direction. The connecting rod is in the decoupling condition and the connecting rod is in contact with the first blocking surface. When the internal release lever is continuously braked, the connecting lever is separated from the first blocking surface and in contact with the second blocking surface, and the connecting lever is in the decoupling condition; as well as A spring is configured to bias the reset rod to a decoupled position, a portion of the spring contacting a retaining feature of the reset rod extending from a lug of the reset rod forming the first blocking surface, and this portion of the spring being disposed between the retaining feature and a portion of the connecting rod.

2. The dual-pull automatic reset latch system of claim 1, wherein, The portion of the connecting rod that contacts the first blocking surface of the reset rod extends circumferentially and is parallel to the rotation axis of the internal release rod of the latching system.

3. The dual-pull automatic reset latch system of claim 2, wherein, The lug of the connecting rod is configured to apply load to an opening in the internal release lever of the latching system, rather than as a pivot of the connecting rod.

4. The dual-pull automatic reset latch system of claim 1, wherein, The lug of the connecting rod is configured to apply load to an opening in the internal release lever of the latching system, rather than as a pivot of the connecting rod.

5. The double-pull automatic reset latch system as described in claim 1, characterized in that, Also includes: An automatic reset switch is actuated after the first blocking surface disengages from the connecting rod and when the second blocking surface contacts the connecting rod.

6. The double-pull automatic reset latch system as described in claim 3, characterized in that, Also includes: An automatic reset switch is actuated after the first blocking surface disengages from the connecting rod and when the second blocking surface contacts the connecting rod.

7. A double-pull automatic reset latch system, characterized in that, Include: A release system is used to unlock the device when power is supplied. An internal release lever is movably engaged with a fixed structure about a first axis, wherein activating the internal release lever in the power-on condition does not couple the internal release lever with the release system, and a second consecutive actuation of the internal release lever in the power-off condition couples the internal release lever with the release system to achieve unlocking; A connecting rod that is movably engaged with the internal release rod about a second axis, wherein the connecting rod contacts the release system when coupled; The control linkage is movably engaged with the internal release lever about a third axis; A reset lever, which is rotatably engaged with the fixed structure about a fourth axis, and while the internal release lever remains decoupled from the release system, the reset lever is used to reset the latching system to the origin position after the internal release lever is activated in the power-on condition; as well as A spring is configured to bias the reset rod to a decoupled position, a portion of the spring contacting a retaining feature of the reset rod extending from a lug of the reset rod forming a first blocking surface of the reset rod, and this portion of the spring being disposed between the retaining feature and a portion of the connecting rod.

8. The double-pull automatic reset latch system as described in claim 7, characterized in that, The portion of the connecting rod that contacts the first blocking surface of the reset rod extends circumferentially and is parallel to the axis of rotation of the internal release rod of the latching system.

9. The double-pull automatic reset latch system as described in claim 8, characterized in that, The lug of the connecting rod is configured to apply load to an opening in the internal release lever of the latching system, rather than as a pivot of the connecting rod.

10. The double-pull automatic reset latch system as described in claim 7, characterized in that, The lug of the connecting rod is configured to apply load to an opening in the internal release lever of the latching system, rather than as a pivot of the connecting rod.

11. The double-pull automatic reset latch system as described in claim 7, characterized in that, When the internal release lever is initially actuated, the connecting rod contacts the reset lever, thereby preventing the connecting rod from coupling the internal release lever to the release system.

12. The double-pull automatic reset latch system as described in claim 11, characterized in that, The continuous actuation of the internal release rod achieves a blocking transition, wherein the contact between the connecting rod and the reset rod is released, and the connecting rod transitions to sliding contact with the over-control link.

13. The double-pull automatic reset latch system as described in claim 7, characterized in that, The overdrive linkage contacts the reset rod, thereby driving the reset rod under the actuation of the internal release rod.

14. A method for operating a double-pull automatic reset latch system, characterized in that, In the absence of power, the internal release lever is moved for the first time from the origin position around the first axis, wherein the internal release lever is movably engaged with the fixed structure at the first axis; By contacting the connecting rod and the reset rod, the connecting rod is prevented from coupling the internal release rod to the release system. The reset rod is used to engage with the release system, wherein the connecting rod is movably engaged with the fixed structure about a second axis, and the reset rod is movably engaged with the fixed structure about a third axis. During the first movement, the overdrive link is brought into contact with the reset lever, wherein the overdrive link is movably engaged with the internal release lever about a fourth axis; Continue the first movement, and drive the reset rod in the opposite direction through the contact between the control linkage and the reset rod; Continue the first movement, and release the connection between the connecting rod and the reset rod while the connecting rod slides into contact with the over-control connecting rod, so as to transition the obstruction of the connecting rod; Continue the first movement to disengage the reset rod from the over-control link; Block the connecting rod; Continue the first movement to fix the supercontrol link to the connecting rod; The internal release rod is engaged with the release system by coupling the connecting rod between the internal release rod and the release system. In the absence of power, the internal release lever makes a second movement to actuate the release system; as well as The reset rod is biased to a decoupled position by a spring, a portion of which contacts a retaining feature of the reset rod extending from a lug of the reset rod. The lug forms a first blocking surface of the reset rod, and this portion of the spring is disposed between the retaining feature and a portion of the connecting rod.

15. The method as described in claim 14, characterized in that, The first axis, the second axis, the third axis, and the fourth axis are spaced apart from each other and are parallel.

16. The method as described in claim 14, characterized in that, When power is present, the second movement of the internal release lever will not actuate the release system.

17. The method as described in claim 14, characterized in that, The portion of the connecting rod that contacts the first blocking surface of the reset rod extends circumferentially and is parallel to the rotation axis of the internal release rod of the latching system.

18. The method as described in claim 17, characterized in that, The lug of the connecting rod is configured to apply load to an opening in the internal release lever of the latching system, rather than as a pivot of the connecting rod.

19. The method as described in claim 14, characterized in that, The lug of the connecting rod is configured to apply load to an opening in the internal release rod of the latching system, rather than to act as a pivot of the connecting rod.

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