Emergency unlocking mechanism of automobile electric door lock

Abstract

The emergency unlocking mechanism of the automobile electric door lock comprises a door lock bottom plate, a clamping plate, a first pin shaft, a first gear plate, a first gear and an emergency unlocking shifting plate, the door lock bottom plate is fixedly installed on an automobile door, a door lock shell is arranged on the door lock bottom plate, and the two ends of the first pin shaft are fixed to an inner cavity of the shell; the first pin shaft is sleeved with the clamping plate, the first gear plate and the first gear, a first arc-shaped hole is formed in the first gear plate, and a clamping plate driving rod is fixedly arranged on the clamping plate. The transmission block capable of deflecting is arranged on the first pin shaft, the transmission block can be driven to deflect through the emergency unlocking shifting plate, the pawl can be released through the first external linkage shifting piece while the transmission block is separated from the clamping plate driving rod, the external opening pull wire is pulled through the second external linkage shifting piece, and therefore unlocking is achieved. Therefore, linkage with other locking mechanisms of the automobile door is achieved, synchronous unlocking is achieved under the condition that a central system does not need to be controlled, and the structure of the automobile door is simplified.

Description

Technical Field

[0001] This utility model relates to the field of automotive electric door lock technology, and in particular to an emergency unlocking mechanism for automotive electric door locks. Background Technology

[0002] Car door locks typically use a latch plate to engage the latch, while a pawl engages the latch plate to lock the door in a fully locked state. For manual car door locks, unlocking is achieved by pulling the pawl with a cable, disengaging it from the latch plate, and then freely opening the door. However, for electric door locks with electric suction and ice-breaking functions, the internal structure is more complex. The latch plate and pawl are usually connected to other mechanisms, making it difficult to simply pull the pawl to release the latch plate. For example, Chinese Patent Application No. 202323666316.8 discloses an integrated self-closing electric door lock, which relates to automotive components. In this field, the main structure consists of an upper cover, base, claw support, and bottom plate that assemble various functional components. A motor drives a worm gear, which, in conjunction with a gearbox, drives a drive disc to rotate. A pin on the drive disc moves a drag arm, which in turn moves a latching plate connected to it, completing the engagement process. An opening arm moves a release arm, which in turn rotates a stop claw, disengaging it from the latching plate. The latching plate then rotates in the unlocking direction, achieving electric unlocking. When the door lock is in the engagement process, an operator can operate an emergency opening arm, which in turn moves a release arm. The release arm, through a circular groove, moves a clutch arm pin on the clutch arm, separating the clutch arm from the latching plate pin, thus achieving the priority unlocking process. The device releases the stop pawl via an emergency opening arm. Its electric suction and ice-breaking functions are mainly achieved through a complex linkage structure, which is complex and has low reliability. Furthermore, for some vehicles with sliding doors, there are multiple locking mechanisms on the door. Conventional doors are unlocked by an electric door lock, and a feedback electrical signal is generated to the central controller, which then controls other locking mechanisms to open, making the door mechanism complex. Therefore, an emergency unlocking mechanism for automotive electric door locks is needed, which can be manually unlocked in an emergency. It also has an external linkage mechanism that can directly link with other locking mechanisms when unlocking, simplifying the door structure. Utility Model Content

[0003] To address the aforementioned issues, this utility model proposes an emergency unlocking mechanism for automotive electric door locks, which allows for manual unlocking in emergencies. It also incorporates an external linkage mechanism that can directly link with other locking mechanisms during unlocking, thus simplifying the door's structure.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model proposes an emergency unlocking mechanism for an electric car door lock, comprising: a door lock base plate, a locking plate, a first pin, a first gear plate, a first gear, and an emergency unlocking lever. The door lock base plate is fixedly installed on the car door and has a door lock housing. Both ends of the first pin are fixed to the inner cavity of the housing. The locking plate, the first gear plate, and the first gear are all mounted on the first pin. The first gear plate has a first arc-shaped hole. A locking plate drive rod is fixedly installed on the locking plate, with its upper end extending into the first arc-shaped hole. A second gear plate and a transmission block are provided on one side of the first arc-shaped hole. The transmission block has a shaft portion that passes through the first gear plate, and the second gear plate is connected to the shaft portion and the first gear. The first gear plate is supported on one side of the locking plate drive rod by the transmission block. The emergency unlocking lever is installed in the door lock housing through the second pin in the middle. The emergency unlocking lever can rotate around the second pin, and when the emergency unlocking lever rotates, one end of the emergency unlocking lever is connected to the first gear through the transmission teeth.

[0006] Furthermore, it also includes a pawl and a first external linkage lever. The pawl and the first external linkage lever are respectively installed in the door lock housing via a third pin and a fourth pin. The first external linkage lever is provided with a sliding groove. One end of the pawl can abut against the side of the locking plate. A pawl drive rod is fixedly provided on the pawl. The upper end of the pawl drive rod extends into the sliding groove. One end of the first external linkage lever extends towards the emergency unlocking plate. When the emergency unlocking plate rotates, the emergency unlocking plate can drive the first external linkage lever to rotate synchronously.

[0007] Furthermore, it also includes a second external linkage lever and an external opening pull cable. The second external linkage lever is installed on the door lock base plate through a fifth pin. One end of the second external linkage lever is connected to one end of the first external linkage lever, and the other end of the second external linkage lever is connected to the external opening pull cable.

[0008] Furthermore, it also includes a manual pull cable, one end of which is connected to the emergency unlocking lever, and the other end of which is connected to the manual unlocking ring of the door.

[0009] Furthermore, the door lock housing is provided with a first limiting block. When one end of the emergency unlocking lever is pressed against the side of the first limiting block, the transmission gear separates from the first gear.

[0010] Furthermore, a second limiting block is provided on one side of the second gear plate, and the second limiting block extends toward the first gear plate. The second limiting block is used to limit the rotation range of the second gear plate.

[0011] The beneficial effects of this utility model are as follows: By setting a deflectable transmission block on the first pin shaft, the transmission block can be deflected by the emergency unlocking lever, so that the transmission block is separated from the card plate drive rod. At the same time, the pawl can be released by the first external linkage lever and the external opening cable can be pulled by the second external linkage lever, thereby achieving linkage with other locking mechanisms of the car door. Synchronous unlocking can be achieved without the need for a control central system, simplifying the structure of the car door. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 2

[0013] Figure 2 This is a schematic diagram of the structure of the shell of this utility model. Figure 2

[0014] Figure 3 Indication of the emergency unlocking lever being pulled. Figure 2

[0015] Figure 4 This is a diagram of the pawl and catch plate when fully locked. Figure 2

[0016] Figure 5 This diagram illustrates the pawl and latch for emergency unlocking. Figure 2

[0017] Figure 6 This is a schematic diagram of the structure of the first external linkage lever of this utility model. Figure 2

[0018] Figure 7 This is a schematic diagram of the installation of this utility model on a car door. Figure 2

[0019] In the diagram: 1-Door lock base plate, 2-Housing shell, 3-Clamping plate, 4-First pin, 5-First gear plate, 6-First gear, 7-First arc-shaped hole, 8-Clamping plate drive rod, 9-Second gear plate, 10-Transmission block, 11-Shaft body, 12-Emergency unlocking lever, 13-Transmission gear, 14-Pawl, 15-First external linkage lever, 16-Pawl drive rod, 17-Slide groove, 18-Second external linkage lever, 19-Outward opening cable, 20-Manual cable, 21-First limit block, 22-Second limit block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Throughout the description, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include at least one of the stated features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0023] like Figures 1 to 7 As shown, an embodiment of this utility model provides an emergency unlocking mechanism for an electric car door lock, including: a door lock base plate 1, a locking plate 3, a first pin 4, a first gear plate 5, a first gear 6, and an emergency unlocking lever 12. The door lock base plate 1 is fixedly installed on the car door, and a door lock housing 2 is provided on the door lock base plate 1. The two ends of the first pin 4 are fixed to the inner cavity of the housing 2. The locking plate 3, the first gear plate 5, and the first gear 6 are all fitted on the first pin 4. The first gear plate 5 is provided with a first arc-shaped hole 7. A locking plate drive rod 8 is fixedly provided on the locking plate 3, and the upper end of the locking plate drive rod 8 extends to the first arc-shaped hole 7. A second gear plate 9 and a transmission block 10 are provided on one side of the first arc-shaped hole 7 in hole 7. The transmission block 10 is provided with a shaft part 11, which passes through the first gear plate 5 and is connected to the shaft part 11. The second gear plate 9 is connected to the first gear 6. The first gear plate 5 is pushed against the side of the card plate drive rod 8 through the transmission block 10. The emergency unlocking plate 12 is installed in the door lock housing 2 through the second pin. The emergency unlocking plate 12 can rotate around the second pin. When the emergency unlocking plate 12 rotates, one end of the emergency unlocking plate 12 is connected to the first gear 6 through the transmission tooth 13.

[0024] When the car door is fully locked, the latch 3 hooks onto the lock on the B-pillar or C-pillar, while the pawl 14 pushes against one side of the latch 3 to prevent it from rotating, thus locking the latch 3. When the electric door lock of this device performs electric suction closing, it mainly drives the latch 3 to rotate via the first gear plate 5 driving the latch drive rod 8, pulling the lock to the fully locked state. The motor of this device drives the first gear plate 5 through a worm gear and worm wheel structure. After the motor stops, a self-locking structure is formed, meaning that the first gear plate 5 cannot drive the motor to rotate under external force. In the fully locked state, the first gear plate 5 cannot rotate, and the transmission teeth 13 on the first gear plate 5 will push against one side of the latch drive rod 8. Therefore, if the motor is not needed at this time, and emergency unlocking is required, the pawl 14 and the transmission block 10 must rotate simultaneously. This is achieved through the following steps:

[0025] When the emergency door needs to be opened manually, the driver and passengers pull the handle on the door. The handle pulls one end of the emergency unlocking lever 12 via the manual pull cable 20, causing the emergency unlocking lever 12 to deflect. During the rotation, the transmission gear 13 on the emergency unlocking lever 12 drives the first gear 6 to rotate. Under the drive of the first gear 6, the second gear plate 9 drives the transmission block 10 to rotate, causing the end of the transmission block 10 that is in contact with the locking plate drive rod 8 to deflect outward, thereby releasing the locking plate drive rod 8. The locking plate drive rod 8 can then move within the first arc-shaped hole 7. When the emergency unlocking lever 12 is rotated, it will also drive the first external linkage lever 15 to rotate. Since the pawl drive rod 16 on the pawl 14 extends into the slide groove 17, the rotation of the first external linkage lever 15 will drive 16 to move, causing the pawl 14 to deflect in a far away direction, so that the pawl 14 is separated from the latch 3. At this time, the latch 3 and the latch drive rod 8 are no longer constrained and can rotate freely. Pushing the door will open the door and complete the manual emergency unlocking.

[0026] like Figure 7 As shown, for some MPV models that use sliding doors, multiple locking mechanisms are installed on the doors for safety redundancy. For these types of doors, other locking mechanisms need to be unlocked simultaneously when opening the door. Therefore, this device is also equipped with a second external linkage lever 18. When the first external linkage lever 15 is driven by the emergency unlocking lever 12, it will drive the second external linkage lever 18 to rotate synchronously, thereby pulling the outward opening cable 19. Through the outward opening cable 19, other locking mechanisms are pulled to achieve synchronous unlocking of the entire door.

[0027] Compared to the traditional method of synchronous unlocking via a central controller, this device unlocks directly through mechanical means, which is highly reliable and does not require an additional central controller, simplifying the door structure and reducing the failure rate.

[0028] Specifically, such as Figure 4 , Figure 5 , Figure 6 As shown, it also includes a pawl 14 and a first external linkage lever 15. The pawl 14 and the first external linkage lever 15 are installed in the door lock housing 2 through the third pin and the fourth pin, respectively. The first external linkage lever 15 is provided with a sliding groove 17. One end of the pawl 14 can abut against the side of the latch plate 3. A pawl drive rod 16 is fixedly provided on the pawl 14. The upper end of the pawl drive rod 16 extends into the sliding groove 17. One end of the first external linkage lever 15 extends toward the emergency unlocking plate 12. When the emergency unlocking plate 12 rotates, the emergency unlocking plate 12 can drive the first external linkage lever 15 to rotate synchronously. The pawl 14 is connected to the first external linkage lever 15 via the pawl drive rod 16, so that the first external linkage lever 15 and the pawl 14 are linked. The linkage is bidirectional. When manually unlocking, the pawl 14 can be deflected by the first external linkage lever 15. When electrically unlocking, after the pawl 14 is released, the first external linkage lever 15 can be deflected by the pawl drive rod 16. Thus, after both manual and electric unlocking, the other locking mechanisms of the door can be unlocked simultaneously by the first external linkage lever 15 and the second external linkage lever 18.

[0029] In a preferred embodiment, the system further includes a second external linkage lever 18 and an outward opening cable 19. The second external linkage lever 18 is mounted on the door lock base plate 1 via a fifth pin. One end of the second external linkage lever 18 is connected to one end of the first external linkage lever 15, and the other end of the second external linkage lever 18 is connected to the outward opening cable 19. When the first external linkage lever 15 rotates, it will drive the second external linkage lever 18 to rotate, thereby pulling the outward opening cable 19 and unlocking the other locking mechanisms of the door.

[0030] Preferably, it also includes a manual pull cable 20, one end of which is connected to the emergency unlocking lever 12, and the other end of which is connected to the manual unlocking ring of the door. The driver and passengers can pull the emergency unlocking lever 12 to deflect by moving the manual pull cable 20 through the handle.

[0031] Specifically, the door lock housing 2 is provided with a first limiting block 21. When one end of the emergency unlocking lever 12 is pressed against the side of the first limiting block 21, the transmission gear 13 separates from the first gear 6. This means that when manually unlocking, the driver or passenger needs to pull the handle a certain distance before the first gear 6 can rotate, reducing the sensitivity of the handle and thus reducing the risk of misoperation.

[0032] Preferably, such as Figure 1 As shown, a second limiting block 22 is provided on one side of the second gear plate 9, extending towards the first gear plate 5. The second limiting block 22 is used to limit the rotation range of the second gear plate 9. After the second gear plate 9 rotates, the second limiting block 22 will press against the side of the first gear plate 5, thus achieving the limiting function.

[0033] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. An emergency unlocking mechanism for an electric car door lock, characterized in that, include: Door lock base plate (1), locking plate (3), first pin (4), first gear plate (5), first gear (6), emergency unlocking lever (12), The door lock base plate (1) is fixedly installed on the car door, and the door lock housing (2) is provided on the door lock base plate (1). The two ends of the first pin (4) are fixed to the inner cavity of the housing (2). The clamping plate (3), the first gear plate (5), and the first gear (6) are all mounted on the first pin (4). The first gear plate (5) has a first arc-shaped hole (7). A clamping plate driving rod (8) is fixedly mounted on the clamping plate (3), and the upper end of the clamping plate driving rod (8) extends into the first arc-shaped hole (7). A second gear plate (9) and a transmission block (10) are provided on one side of the first arc-shaped hole (7). The transmission block (10) is provided with a shaft part (11), which passes through the first gear plate (5). The second gear plate (9) is connected to the shaft part (11), and the second gear plate (9) is connected to the first gear (6). The first gear plate (5) is pressed against one side of the clamping plate drive rod (8) by the transmission block (10). The emergency unlocking plate (12) is installed in the door lock housing (2) through the second pin. The emergency unlocking plate (12) can rotate around the second pin. When the emergency unlocking plate (12) rotates, one end of the emergency unlocking plate (12) is connected to the first gear (6) through the transmission gear (13).

2. The emergency unlocking mechanism for an electric car door lock according to claim 1, characterized in that, It also includes a pawl (14) and a first external linkage lever (15). The pawl (14) and the first external linkage lever (15) are installed in the door lock housing (2) through the third pin and the fourth pin, respectively. The first external linkage lever (15) is provided with a sliding groove (17). One end of the pawl (14) can abut against the side of the latch plate (3). A pawl drive rod (16) is fixedly provided on the pawl (14). The upper end of the pawl drive rod (16) extends into the sliding groove (17). One end of the first external linkage lever (15) extends toward the emergency unlocking plate (12). When the emergency unlocking plate (12) rotates, the emergency unlocking plate (12) can drive the first external linkage lever (15) to rotate synchronously.

3. The emergency unlocking mechanism for an electric car door lock according to claim 2, characterized in that, It also includes a second external linkage lever (18) and an external opening pull cable (19). The second external linkage lever (18) is installed on the door lock base plate (1) through a fifth pin. One end of the second external linkage lever (18) is connected to one end of the first external linkage lever (15), and the other end of the second external linkage lever (18) is connected to the external opening pull cable (19).

4. The emergency unlocking mechanism for an electric car door lock according to claim 1, characterized in that, It also includes a manual pull cable (20), one end of which is connected to the emergency unlocking lever (12), and the other end of which is connected to the manual unlocking ring of the door.

5. The emergency unlocking mechanism for an electric car door lock according to claim 1, characterized in that, The door lock housing (2) is provided with a first limiting block (21). When one end of the emergency unlocking plate (12) is against the side of the first limiting block (21), the transmission gear (13) separates from the first gear (6).

6. The emergency unlocking mechanism for an electric car door lock according to claim 1, characterized in that, A second limiting block (22) is provided on one side of the second gear plate (9). The second limiting block (22) extends to the side of the first gear plate (5) and is used to limit the rotation range of the second gear plate (9).

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