Safe disengaging mechanism of automobile door lock

Abstract

The utility model discloses a safety separating mechanism of an automobile door lock, the automobile door lock at least comprises a pawl and a ratchet wheel, and the safety separating mechanism comprises a pull-in rocker arm with a rolling part; the reel is connected with a pull-in pull wire; the limiting arm is provided with a sliding groove for accommodating the rolling part; the rotating arm is rotationally connected to the limiting arm and at least provided with a check block and a clutch arm; the supporting plate is provided with a baffle capable of abutting against the clutch arm of the rotating arm; the separation pull rod can be matched with the rotating arm, one end is used for pulling the rotating arm, and the other end is connected with the opening component; when safe disengaging needs to be achieved, the reel rotates to be disengaged from abutting fit with the suction rocker arm, external force is applied to the disengaging pull rod, the rotating arm is pulled to rotate, the clutch arm is disengaged from the baffle of the supporting plate, the check block is disengaged from abutting against the limiting arm, and the limiting arm rotates and drives the suction rocker arm to rotate in the direction away from the ratchet wheel through the rolling part. Automatic pull-in of the stop door lock can be manually intervened, a vehicle door can be opened in emergency conveniently, and the safety of opening and closing the door is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of automotive door lock technology, and in particular relates to a safe disengagement mechanism for automotive door locks. Background Technology

[0002] With the development of technology, automobiles are demanding increasingly higher levels of automation, leading to a growing application of self-closing side door locks in passenger vehicles. Compared to ordinary door locks, self-closing locks offer enhanced functionality and comfort, but also impose higher safety requirements. The self-closing action means there is a risk of fingers or clothing getting caught in the door. Therefore, the design of automotive door lock mechanisms needs to include a safe disengagement mechanism. Specifically, when a passenger or driver realizes the danger while closing the door and quickly pulls the door handle or emergency release cable, the door lock mechanism must reliably and proactively interrupt the self-closing process, mechanically disengaging the relevant structure to allow the door to open and eliminate the danger. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a safe disengagement mechanism for car door locks, which can be interrupted during the self-locking process of the car door lock, thereby eliminating the dangerous situation of the user opening and closing the door and ensuring the convenience and safety of the user when opening and closing the door.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a safe release mechanism for a car door lock, wherein the car door lock includes at least a pawl and a ratchet that can cooperate with the pawl, and the safe release mechanism includes:

[0005] The rocker arm has a rolling part;

[0006] A winding reel is connected to a pull-in cable, which is connected to an external actuator;

[0007] The limiting arm is rotatably connected to the housing and has a groove for accommodating the rolling part;

[0008] A rotating arm, rotatably connected to the limiting arm, has at least a stop block and a clutch arm, wherein the stop block can abut against the limiting arm;

[0009] A support plate, fixedly installed, has at least a baffle that can abut against the clutch arm of the rotating arm;

[0010] The pull rod can be disengaged and engaged with the rotating arm. One end is used to pull the rotating arm to rotate and disengage from the support plate, while the other end is connected to the opening component of the car door lock.

[0011] When safe disengagement is required, the winding wheel rotates and disengages in conjunction with the engagement rocker arm. An external force is applied to the disengagement lever, pulling the rotating arm to rotate. The clutch arm disengages from the baffle of the support plate, the stop block disengages from the stop arm, and the stop arm rotates and drives the engagement rocker arm to rotate away from the ratchet via the rolling part, so that the car door lock is in an openable state.

[0012] Furthermore, the winding wheel is provided with a push block. When the winding wheel rotates to reset, the push block can abut against the attracting rocker arm to push the attracting rocker arm, thereby driving the limiting arm and the rotating arm to reverse and reset.

[0013] Furthermore, the ratchet is provided with a paddle, and the engaging rocker arm has a protrusion that can engage with the paddle.

[0014] Furthermore, the support plate is fixedly connected to the housing via a sixth pivot and an eighth pivot, the limiting arm is rotatably connected to the housing via the sixth pivot, and the eighth pivot is fitted with a second return spring, one end of which is connected to the waist groove of the limiting arm.

[0015] Furthermore, the rotating arm is rotatably connected to the limiting arm via a seventh rotating shaft, and the line connecting the center of the seventh rotating shaft and the center of the sixth rotating shaft is set substantially perpendicular to the line connecting the baffle and the clutch arm where they abut against the center of the seventh rotating shaft.

[0016] Furthermore, the clutch arm and the stop block on the rotating arm are perpendicular to each other.

[0017] Furthermore, the rotating arm is provided with a 7-shaped protrusion, which is used to engage the third return spring connected to the housing.

[0018] The beneficial effects of this utility model are: in special circumstances, the automatic engagement of the door lock can be manually stopped, facilitating emergency opening of the car door and ensuring the convenience and safety of opening and closing the door; the rotating arm, through its combination or separation with the support plate, enables the door lock to automatically engage or disengage in an emergency, with flexible and reliable switching of actions; the support plate is fixedly set through the sixth and seventh rotating shafts, effectively improving the support strength of the support plate; the limiting arm cooperates with the rotating arm, and the rotating arm cooperates with the support plate to achieve stable limiting of the three, resulting in a stable structure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 .

[0021] Figure 3This is a three-dimensional structural diagram of the rotating arm in this utility model.

[0022] Figure 4 This is a partial three-dimensional structural diagram of the present invention.

[0023] Figure 5 This is the main view of the present utility model. Figure 1 This is a schematic diagram of the suction process.

[0024] Figure 6 This is the main view of the present utility model. Figure 2 This is a diagram showing the process after a safe disengagement.

[0025] Among them, 10-base plate, 11-pawl, 12-ratchet, 121-pull block, 13-winding wheel, 131-push block, 14-attracting rocker arm, 141-rolling part, 142-protrusion, 15-limiting arm, 151-slide groove, 152-waist groove, 16-rotating arm, 161-clutch arm, 162-stop block, 163-7-shaped protrusion, 17-support plate (partial), 171-baffle, 18-detachment 181-Pulley, 19-First pivot, 20-Second pivot, 21-Third pivot, 22-Fourth pivot, 23-Fifth pivot, 24-Sixth pivot, 25-Seventh pivot, 26-Eighth pivot, 27-Actuating pull cable (partial), 28-Mounting housing (partial), 29-Connecting plate (partial), 30-First return spring, 31-Second return spring, 32-Third return spring. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.

[0027] like Figures 1-4 As shown, a safe release mechanism for a car door lock is provided. The car door lock includes at least a housing, a pawl 11, and a ratchet 12. The housing includes a base plate 10, a mounting shell 28, and a connecting plate 29. The safe release mechanism includes an engaging rocker arm 14 with a rolling part 141, a winding wheel 13, a limiting arm 15 rotatably connected to the housing, a rotating arm 16 rotatably connected to the limiting arm 15, a support plate 17 fixedly mounted on the housing, and a release lever 18.

[0028] The winding wheel 13 is rotatably connected to the housing via a third rotating shaft 21, and the winding wheel 13 is connected to a pull-in cable 27, which is connected to an external actuator to provide power for the automatic engagement of the car door lock. A first return spring 30 is sleeved on the third rotating shaft 21. Specifically, one end of the first return spring 30 is connected to the connecting plate 29, and the other end is connected to the winding wheel 13. A push block 131 is provided on the winding wheel 13. When the automatic engagement action is not performed, the push block 131 abuts against the side wall of the engagement rocker arm 14. When the automatic engagement is fully locked, the winding wheel 13 rotates, and the push block 131 rotates away from the side wall of the engagement rocker arm 14. After the automatic engagement action is performed and the safety disengagement is completed, when the winding wheel 13 rotates in the opposite direction to reset, the push block 131 pushes the engagement rocker arm 14, thereby causing the limit arm 15 and the rotating arm 16 to reverse and reset together.

[0029] The engagement rocker arm 14 is rotatably connected to the housing via a fourth rotating shaft 22. One end of the engagement rocker arm 14 is provided with a rolling part 141. In this embodiment, the rolling part 141 is a bearing rotatably connected to a fifth rotating shaft 23. The engagement rocker arm 14 also has a protrusion 142, which can engage with the paddle 121 on the ratchet 12.

[0030] The limiting arm 15 is rotatably connected to the housing via the sixth rotating shaft 24. A groove 151 is provided on one side of the limiting arm 15, and the rolling part 141 of the attracting rocker arm 14 falls into the groove 151 and is limited to sliding within the groove 151.

[0031] The rotating arm 16 is rotatably connected to the limiting arm 15 via the seventh rotating shaft 25, and has a stop block 162 and a clutch arm 161, as shown below. Figure 3 As shown, if the clutch arm 161 is defined to extend along a plane, then the stop block 162 extends vertically. This stop block 162 can abut against the limiting arm 15, specifically against the side wall of the sliding groove 151 of the limiting arm 15. Its vertical extension increases the contact area between the two, making the engagement more stable. A third return spring 32 is provided on the rotating arm 16. The third return spring 32 is sleeved on a rotating shaft of the mounting housing 28. One end is connected to the rotating arm 16, specifically a 7-shaped protrusion 163 is vertically formed on the rotating arm 16, and the third return spring 32 is engaged in the 7-shaped protrusion 163. The other end is connected to the mounting housing 28.

[0032] The support plate 17 is fixedly connected to the sixth rotating shaft 25 and the eighth rotating shaft 26 of the housing, and the support plate 17 has a vertically arranged baffle 171, which can abut against the clutch arm 161 of the rotating arm 16. A second return spring 31 is sleeved on the eighth rotating shaft 26, one end of which abuts against the housing, and the other end is connected to the waist groove 152 of the limiting arm 15.

[0033] The line connecting the centers of the seventh rotating shaft 25 and the sixth rotating shaft 24 is positioned substantially perpendicular to the line connecting the center of the seventh rotating shaft 25 at the point where it abuts against the baffle 171 and the clutch arm 161. Figure 1 The α angle is 90° or close to 90°. With this setting, when the automatic engagement occurs, the limiting arm 15 will be subjected to the reaction force of the engagement rocker arm 14 and the ratchet 12. The limiting arm 15 will have a component force rotating around the sixth rotating shaft 24. The line connecting the baffle 171 and the clutch arm 161 to the seventh rotating shaft 25 is tangent to the arc of rotation with the radius of the line connecting the center of the seventh rotating shaft 25 and the center of the sixth rotating shaft 24. The component force is the smallest when the rotating arm 16 abuts against the support plate 17, and the support force is the largest.

[0034] One end of the release lever 18 is provided with a lever 181, which can cooperate with the rotating arm 16 to pull the rotating arm 16 to rotate and disengage from the support plate 17. The other end of the release lever 18 is connected to the opening component of the car door lock. This opening component is existing technology and will not be described in detail.

[0035] During the automatic engagement of the car door lock, the clutch arm 161 engages with the baffle 171 to prevent the rotating arm 16 from rotating, and the stop block 162 engages with the side wall of the slide groove 151 to prevent the limiting arm 15 from rotating, thus preventing the engagement rocker arm 14 from deviating from its engagement with the ratchet block 121. Figure 1 Taking the direction shown as an example, the car applies an external force to the pull cable 27, causing the pull cable 27 to pull the winding wheel 13 to rotate clockwise. Since the limiting arm 15 and the rotating arm 16 are not in contact, and the rotating arm 16 and the support plate 17 are not in contact, the winding wheel 13 drives the pull rocker arm 14 to rotate. After the pull rocker arm 14 contacts and engages with the toggle block 121, it pushes the ratchet 12 to rotate until the ratchet 12 engages with the pawl 11. The force of the car on the pull cable 27 disappears, and the winding wheel 13 rotates counterclockwise to reset under the elastic force of the first return spring 30. The push block 131 of the winding wheel 13 directly drives the pull rocker arm 14 to rotate in the opposite direction around the fourth rotating shaft 22, and the pull rocker arm 14 resets.

[0036] When a safe disengagement is required during the automatic engagement process, i.e., during the self-engagement process, if special circumstances require manual intervention to terminate the automatic engagement and open the car door, manually pull the handle or emergency engagement cable 27 to force external force through the lock body opening component to pull the pawl 11 away from the engagement with the ratchet 12. That is, the winding wheel 13 rotates, causing the push block 131 to disengage from the blocking engagement rocker arm 14, and pulls the disengagement lever 18. The disengagement lever 18 pulls the rotating arm 16 to rotate, and the clutch arm 161 of the rotating arm 16 disengages from the blocking engagement with the baffle 171 of the support plate 17. The stop block 162 disengages from the blocking engagement with the limiting arm 15. The limiting arm 15 rotates back to its original position under the action of its own return spring, and drives the engaging rocker arm 14 to rotate away from the ratchet 12 through the rolling part 141, thereby making the car door lock in an openable state, making it convenient for the door lock to be opened.

[0037] The above specific embodiments are used to explain and illustrate the present utility model, and are not intended to limit the present utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims shall fall within the protection scope of the present utility model.

Claims

1. A safety release mechanism for a car door lock, the car door lock comprising at least a pawl (11) and a ratchet (12) engaging with the pawl (11), characterized in that, The safety disengagement mechanism includes: The rocker arm (14) is attracted and has a rolling part (141); A winding reel (13) is connected to a pull-in cable (27), which is connected to an external actuator; The limiting arm (15) is rotatably connected to the housing and has a groove (151) for accommodating the rolling part (141); A rotating arm (16) is rotatably connected to the limiting arm (15) and has at least a stop (162) and a clutch arm (161), wherein the stop (162) can abut against the limiting arm (15); The support plate (17) is fixedly installed and has at least a baffle (171) that can abut against the clutch arm (161) of the rotating arm (16); The release lever (18) can cooperate with the rotating arm (16), one end of which is used to pull the rotating arm (16) to rotate and disengage from the support plate (17), and the other end is connected to the opening part of the car door lock. When safe disengagement is required, the winding wheel (13) rotates to disengage from the engagement rocker arm (14), and an external force is applied to the disengagement lever (18) to pull the rotating arm (16) to rotate. The clutch arm (161) disengages from the baffle (171) of the support plate (17), and the stop block (162) disengages from the engagement of the limiting arm (15). The limiting arm (15) rotates and drives the engagement rocker arm (14) to rotate away from the ratchet (12) through the rolling part (141), so that the car door lock is in an openable state.

2. The safe disengagement mechanism for a car door lock according to claim 1, characterized in that: The winding wheel (13) is provided with a push block (131). When the winding wheel (13) rotates and resets, the push block (131) can abut against the attracting rocker arm (14) to push the attracting rocker arm (14) to drive the limiting arm (15) and the rotating arm (16) to reverse and reset.

3. The safe disengagement mechanism for a car door lock according to claim 1, characterized in that: The ratchet (12) is provided with a paddle (121), and the engaging rocker arm (14) has a protrusion (142) that can engage with the paddle (121).

4. The safe disengagement mechanism for a car door lock according to claim 1, characterized in that: The support plate (17) is fixedly connected to the housing via the sixth pivot (24) and the eighth pivot (26). The limiting arm (15) is rotatably connected to the housing via the sixth pivot (24). The eighth pivot (26) is fitted with a second return spring (31), one end of which is connected to the waist groove (152) of the limiting arm (15).

5. The safe disengagement mechanism for a car door lock according to claim 1, characterized in that: The rotating arm (16) is rotatably connected to the limiting arm (15) via the seventh rotating shaft (25). The center line connecting the seventh rotating shaft (25) and the sixth rotating shaft (24) is basically perpendicular to the line connecting the baffle (171) and the clutch arm (161) at the point where they abut against the center of the seventh rotating shaft (25).

6. The safe disengagement mechanism for a car door lock according to claim 1, characterized in that: The clutch arm (161) and the stop block (162) on the rotating arm (16) are perpendicular to each other.

7. The safe disengagement mechanism for a car door lock according to claim 1, characterized in that: The rotating arm (16) is provided with a 7-shaped protrusion, which is used to lock the third return spring connected to the housing.

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