Electric suction icebreaking mechanism of automobile electric door lock

Abstract

The utility model provides an electric suction icebreaking mechanism of an automobile electric door lock, which comprises a door lock bottom plate, a clamping plate, a first gear plate and a pawl, the door lock bottom plate is fixedly arranged on an automobile door, a door lock lower shell is arranged on the door lock bottom plate, and a partition plate is arranged in the middle of the door lock lower shell. The clamping plate and the first gear plate are installed on the two sides of the partition plate through a first pin shaft, and the first pin shaft penetrates through the partition plate. One end of the pawl is connected with the door lock lower shell through a second pin shaft, and the other end of the pawl can abut against the side face of the clamping plate. A clamping plate driving rod is arranged on the clamping plate, a pawl driving rod is arranged on the pawl, and the upper end of the clamping plate driving rod and the upper end of the pawl driving rod both penetrate through the partition plate. By arranging the first gear plate with the bevel edge part and the arc part, the ice breaking function and the electric suction door closing function are achieved, a multi-motor structure or a complex connecting rod structure does not need to be used, the structure of the electric door lock is simplified, the manufacturing cost of the electric door lock is reduced, and the reliability of the electric door lock is improved.

Description

Technical Field

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

[0002] As domestically produced cars shift towards electrification, their features are becoming increasingly sophisticated. Features previously only found in high-end luxury models, such as electric suction doors and ice-breaking functions, are now gradually becoming common in mid-range vehicles. In cars equipped with electric suction doors and ice-breaking functions, closing the door requires only a gentle push to bring it to a semi-locked state. Then, a mechanism in the electric door lock pulls the door to a fully locked state. If the door is frozen, it can be pushed outwards through the lock to break the ice. For example, Chinese patent application number 202321388177.4 discloses an integrated self-closing electric door lock with ice-breaking function, including two side housings assembling the transmission components and functional components. The opening arm and the stop pawl are coaxially arranged via the stop pawl shaft. One edge of the stop pawl is fastened to the opening arm, allowing the opening arm to rotate and push the stop pawl along the stop pawl shaft. The two ends of the connecting arm are movably connected to the electric suction secondary wheel and the middle of the U-shaped suction arm. By moving the connecting arm, the suction arm is pulled to rotate along the clamping plate shaft. The suction arm is connected to the clutch arm, and the clamping plate pin on the clamping plate engages with the opening groove on the clutch arm. When the car door is fully locked, the clamping plate is held in place by the pawl. Therefore, the pawl needs to be released before ice breaking. Currently, most electric door locks with electric suction and ice breaking functions achieve the above steps through multiple motors or complex linkage mechanisms, resulting in complex door lock structures, high procurement costs, and low reliability. Therefore, an electric suction ice breaking mechanism for automotive electric door locks is needed, which achieves electric suction and ice breaking functions through a gear plate. This mechanism has a simple and reliable structure, low manufacturing cost, and high reliability. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes an electric suction and ice-breaking mechanism for automotive electric door locks. This mechanism achieves both electric suction and ice-breaking functions through a gear plate, featuring a simple and reliable structure, low manufacturing cost, and high reliability.

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

[0005] This utility model proposes an electric suction ice-breaking mechanism for an electric car door lock, comprising: a door lock base plate, a locking plate, a first gear plate, and a pawl. The door lock base plate is fixedly installed on the car door. A lower door lock shell is installed on the door lock base plate, and a partition is provided in the middle of the lower door lock shell. The locking plate and the first gear plate are installed on both sides of the partition via a first pin. The first pin passes through the partition. One end of the pawl is connected to the lower door lock shell via a second pin, and the other end of the pawl can abut against the side of the locking plate. A locking plate drive rod is provided on the locking plate, and a pawl drive rod is provided on the pawl. The upper ends of both the locking plate drive rod and the pawl drive rod pass through the partition, and the upper ends of both the locking plate drive rod and the pawl drive rod are higher than the upper surface of the first gear plate. A first arc-shaped hole is provided on the first gear plate, and the locking plate drive rod extends into the first arc-shaped hole. A motor is provided on the lower door lock shell, and the motor is connected to the first gear plate via a transmission gear.

[0006] Furthermore, the first gear plate has an inclined side, an arc portion, and a gear portion on its outer periphery. The first gear plate is connected to the transmission gear through the gear portion. The inclined side has a proximal end and a distal end. The distance from the proximal end to the center of the first gear plate is less than the distance from the distal end to the center of the first gear plate. The center of the arc portion is located on the axis of the first pin, and one end of the arc portion is connected to the distal end of the inclined side. The other end of the arc portion has a limiting protrusion.

[0007] Furthermore, the center of the first arc-shaped hole is located on the axis of the first pin, and a second gear plate and a transmission block are provided on the first arc-shaped hole. A shaft part is provided on one side of the transmission block, and the shaft part passes through the first gear plate. The second gear plate is fixedly connected to the shaft part.

[0008] Furthermore, the second gear plate is provided with a bent portion that faces the first gear plate, and the bent portion is used to limit the rotation range of the second gear plate.

[0009] Furthermore, when the first gear plate rotates, the chuck drive rod can move relative to the first arc-shaped hole to a first position and a second position. When the chuck drive rod is in the first position, the chuck drive rod is against one end of the first arc-shaped hole, and the pawl drive rod is located at the far end of the inclined side. When the chuck drive rod is in the second position, one side of the transmission block is against the outer periphery of the chuck drive rod.

[0010] Furthermore, a first torsion spring is provided on the first pin shaft, which is used to reset the chuck plate; a second torsion spring is provided on the shaft body, which is used to reset the transmission block; and a third torsion spring is provided on the second pin shaft, which is used to reset the ratchet pawl.

[0011] The beneficial effects of this utility model are as follows: By setting a first gear plate with a beveled edge and an arc, the first gear plate can release the pawl after rotation, and then drive the plate through the plate drive rod. The plate pushes the car door open, realizing the ice-breaking function. Alternatively, the first gear plate can rotate in the opposite direction, thereby driving the plate through the plate drive rod to push the plate to close the car door, realizing the electric suction closing function. This eliminates the need for a multi-motor structure or a complex linkage structure, simplifying the structure of the electric door lock, reducing the manufacturing cost of the electric door lock, and improving the reliability of the electric door lock. 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 lower part of the present invention. Figure 2

[0014] Figure 3 This diagram illustrates the mounting positions of the clamping plate and ratchet pawl in this utility model. Figure 2

[0015] Figure 4 This is a schematic diagram showing the connections of the various parts of this utility model. Figure 2

[0016] Figure 5 This is a diagram illustrating the movement of the card plate drive rod relative to the first arc-shaped hole to the second position. Figure 2

[0017] Figure 6 This is a diagram illustrating the movement of the card plate drive rod relative to the first arc-shaped hole to the first position. Figure 2

[0018] Figure 7 This is a schematic diagram of the structure of the lower shell of the door lock of this utility model. Figure 2

[0019] In the diagram: 1-Door lock base plate, 2-Door lock lower shell, 3-Baffle plate, 4-Clamping plate, 5-First gear plate, 6-First pin, 7-Pawl, 8-Second pin, 9-Clamping plate drive rod, 10-Pawl drive rod, 11-First arc-shaped hole, 12-Motor, 13-Transmission gear, 14-Beveled edge, 15-Arc section, 16-Gear section, 17-Second gear plate, 18-Transmission block, 19-Shaft section, 20-Bending section, 21-First torsion spring, 22-Second torsion spring, 23-Third torsion spring. 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, one embodiment of this utility model provides an electric suction ice-breaking mechanism for an automotive electric door lock, including: a door lock base plate 1, a locking plate 4, a first gear plate 5, and a pawl 7. The door lock base plate 1 is fixedly installed on the car door. A door lock lower shell 2 is installed on the door lock base plate 1. A partition 3 is provided in the middle of the door lock lower shell 2. The locking plate 4 and the first gear plate 5 are installed on both sides of the partition 3 by a first pin 6. The first pin 6 passes through the partition 3 and is connected to the door lock lower shell 2 by a second pin 8 at one end of the pawl 7. The other end of the pawl 7... The end can rest against the side of the card plate 4. The card plate 4 is provided with a card plate drive rod 9, and the pawl 7 is provided with a pawl drive rod 10. The upper ends of the card plate drive rod 9 and the pawl drive rod 10 both pass through the partition 3, and the upper ends of the card plate drive rod 9 and the pawl drive rod 10 are both higher than the upper end surface of the first gear plate 5. The first gear plate 5 is provided with a first arc-shaped hole 11, and the card plate drive rod 9 extends into the first arc-shaped hole 11. The lower shell 2 of the door lock is provided with a motor 12, and the motor 12 is connected to the first gear plate 5 through a transmission gear 13.

[0024] First, there are the most basic functions of locking the car door and electric suction closing. The latch that matches this electric door lock is fixedly installed on the B-pillar or C-pillar of the car body. The electric door lock is fixedly installed on the car door through the door lock base plate 1. After the car door is closed, the latch will push the latch plate 4, so that one end of the latch plate 4 is locked on the pawl 7. At this time, there is still some space between the latch plate and the door lock base plate 1, and the car door is not completely fixed, so it is in a semi-locked state. At this time, the control motor 12 rotates, and the torque of the motor 12 is transmitted to the first gear plate 5 through the transmission gear 13. After the first gear plate 5 rotates, it pushes against the latch plate drive rod 9 through the transmission block 18, forcing the latch plate 4 to rotate together with the first gear plate 5. This causes the latch plate 4 to drive the latch to continue to move inward, so that the other side of the latch plate 4 pushes against the pawl 7. At this time, the latch plate 4 tightly pulls the latch, and the latch plate 4 is limited by the pawl 7, thus firmly locking the car door and achieving a fully locked state.

[0025] When using the electric unlocking, the control motor 12 rotates in the opposite direction. The output shaft of the motor 12 is equipped with a worm gear, which drives the first gear plate 5 through the worm gear, worm wheel, and transmission gear 13. The rotation direction of the first gear plate 5 is opposite to the direction when the door is closed by electric suction. At this time, since the first gear plate 5 is equipped with a first arc-shaped hole 11, the first gear plate 5 does not immediately drive the locking plate drive rod 9 after rotating. Instead, it rotates a certain angle first, and then pushes the pawl drive rod 10 outward through the inclined edge 14 on the outer periphery of the first gear plate 5. The pawl 7 rotates under the drive of the pawl drive rod 10, so that the pawl 7 disengages from the locking plate 4. At this time, the locking plate 4 can rotate, thereby unlocking the locking plate 4 and opening the car door, realizing electric unlocking.

[0026] In cold weather, when the car door freezes, the ice-breaking function is needed. The principle of ice breaking is that after the electric unlocking, the motor 12 continues to drive the first gear plate 5 to rotate. After the arc part 15 of the first gear plate 5 contacts the pawl drive rod 10, it will not continue to push the pawl drive rod 10. After the first gear plate 5 continues to rotate, the latch drive rod 9 moves to the first position relative to the first arc hole 11. At this time, the end of the first arc hole 11 pushes the latch drive rod 9 to move together. The direction of rotation of the latch 4 is opposite to the direction when the electric suction door is closed, that is, the car door gets an outward pushing force, thereby squeezing out the ice layer that is blocking the door from opening, so that the car door can be opened.

[0027] The motor 12 is connected to the first gear plate 5 through a worm gear, a turbine, a transmission gear 13, and other mechanisms. The motor 12 controls the rotation direction of the first gear plate 5, which in turn drives the clamping plate 4 to rotate in different directions via the clamping plate drive rod 9, realizing the functions of electric suction closing and ice breaking opening. By setting the first arc-shaped hole 11, the inclined side 14, the arc part 15, and other structures on the first gear plate 5, the action sequence of first releasing the pawl 7 and then pushing the door to break the ice is realized, so that the door can be opened outward smoothly. The first gear plate 5 simplifies the door lock, eliminating the need for multiple motors and complex linkage mechanisms, which can reduce the manufacturing cost of electric door locks, improve overall reliability, and reduce the failure rate.

[0028] Preferably, such as Figure 1 As shown, the outer periphery of the first gear plate 5 is provided with a helical side 14, an arc portion 15, and a gear portion 16. The first gear plate 5 is connected to the transmission gear 13 through the gear portion 16. The helical side 14 is provided with a proximal end and a distal end. The distance from the proximal end to the center of the first gear plate 5 is less than the distance from the distal end to the center of the first gear plate 5. The center of the arc portion 15 is located on the axis of the first pin 6, and one end of the arc portion 15 is connected to the distal end of the helical side 14. The other end of the arc portion 15 is provided with a limiting protrusion. When the first gear plate 5 rotates, the pawl drive rod 10 slides relative to the outer periphery of the first gear plate 5. When the inclined side 14 contacts the pawl drive rod 10, the pawl drive rod 10 slides from the near end to the far end of the inclined side 14, thereby pushing the pawl drive rod 10 outward through the first gear plate 5, forcing the pawl 7 to rotate, thereby separating the pawl 7 from the locking plate 4, thereby releasing the locking plate 4 so that it can rotate freely. After the pawl drive rod 10 slides from the inclined side 14 to the arc part 15, there is no need to push the pawl 7 outward anymore. At this time, the distance between the pawl drive rod 10 and the first pin 6 remains stable.

[0029] In one specific embodiment, the center of the first arc-shaped hole 11 is located on the axis of the first pin 6. A second gear plate 17 and a transmission block 18 are provided on the first arc-shaped hole 11. A shaft portion 19 is provided on one side of the transmission block 18, passing through the first gear plate 5. The second gear plate 17 is fixedly connected to the shaft portion 19. After the first gear plate 5 rotates, it presses against the plate drive rod 9 via the transmission block 18, causing the plate drive rod 9 to drive the plate 4 to rotate synchronously with the first gear plate 5, thus achieving electric suction closing. In the fully locked state, when the second gear plate 17 is driven by another mechanism, causing the transmission block 18 to rotate, it will force the transmission block 18 to rotate, separating it from the plate drive rod 9, allowing the plate 4 to rotate, thereby achieving manual emergency unlocking.

[0030] In one specific embodiment, the second gear plate 17 is provided with a bent portion 20 facing the first gear plate 5. The bent portion 20 is used to limit the rotation range of the second gear plate 17, thereby providing support force so that the transmission block 18 deflects towards the first pin 6. When relying on the second torsion spring 22 and the bent portion 20, the transmission block 18 remains stable when the door is closed by electric suction, ensuring that the transmission block 18 can stably push the card plate drive rod 9.

[0031] In a preferred embodiment, such as Figure 5 , Figure 6 As shown, when the first gear plate 5 rotates, the chuck drive rod 9 can move relative to the first arc-shaped hole 11 to a first position and a second position. When the chuck drive rod 9 is in the first position, it abuts against one end of the first arc-shaped hole 11, and the pawl drive rod 10 is located at the far end of the inclined side 14. When the chuck drive rod 9 is in the second position, one side of the transmission block 18 abuts against the outer periphery of the chuck drive rod 9. When breaking the ice and opening the door, after the first gear plate 5 rotates, the inclined side 14 first pushes the pawl drive rod 10 to release the pawl 7, and then the chuck drive rod 9 moves relative to the first arc-shaped hole 11 to the first position. At this time, under the push of the side wall of the first arc-shaped hole 11, the chuck drive rod 9 drives the chuck plate 4 to rotate, thereby realizing the series of actions of releasing the pawl 7 and pushing the door outward. When the door is closed by electric suction, after the first gear plate 5 rotates, the plate drive rod 9 moves to the second position relative to the first arc-shaped hole 11. At this time, the plate drive rod 9 is pushed by the transmission block 18, so that the plate 4 hooks the latch and pulls the door to close to the fully locked state.

[0032] In a preferred embodiment, such as Figure 1 , Figure 4 As shown, a first torsion spring 21 is provided on the first pin 6. The first torsion spring 21 is used to reset the locking plate 4. The locking plate 4 unfolds outward under the action of the first torsion spring 21 and remains in a fully open state, ready to hook the second torsion spring 22 on the locking two-shaft body 19. The second torsion spring 22 is used to reset the transmission block 18, so that the transmission block 18 will deflect towards the inside of the first gear plate 5 under the action of the second torsion spring 22, so as to keep the transmission block 18 stably pushing the locking plate drive rod 9. A third torsion spring 23 is provided on the second pin 8. The third torsion spring 23 is used to reset the pawl 7, so that the pawl 7 will deflect towards the locking plate 4 under the action of the third torsion spring 23, so as to achieve half locking and full locking.

[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 electric suction ice-breaking mechanism for an electric car door lock, characterized in that, include: The door lock base plate (1), the locking plate (4), the first gear plate (5), and the pawl (7) are fixedly installed on the car door. A door lock lower shell (2) is installed on the door lock base plate (1). A partition (3) is provided in the middle of the door lock lower shell (2). The locking plate (4) and the first gear plate (5) are installed on both sides of the partition (3) by a first pin (6). The first pin (6) passes through the partition (3) and one end of the pawl (7) is connected to the door lock lower shell (2) by a second pin (8). The other end of the pawl (7) can abut against the side of the locking plate (4). 4) A plate drive rod (9) is provided on the upper part, and a pawl drive rod (10) is provided on the pawl (7). The upper ends of the plate drive rod (9) and the pawl drive rod (10) pass through the partition (3), and the upper ends of the plate drive rod (9) and the pawl drive rod (10) are higher than the upper end surface of the first gear plate (5). The first gear plate (5) is provided with a first arc-shaped hole (11), and the plate drive rod (9) extends into the first arc-shaped hole (11). The lower shell (2) of the door lock is provided with a motor (12), and the motor (12) is connected to the first gear plate (5) through a transmission gear (13).

2. The electric suction ice-breaking mechanism for an automotive electric door lock according to claim 1, characterized in that, The first gear plate (5) has a helical side (14), an arc part (15), and a gear part (16) on its outer periphery. The first gear plate (5) is connected to the transmission gear (13) through the gear part (16). The helical side (14) has a proximal end and a distal end. The distance from the proximal end to the center of the first gear plate (5) is less than the distance from the distal end to the center of the first gear plate (5). The center of the arc part (15) is located on the axis of the first pin (6), and one end of the arc part (15) is connected to the distal end of the helical side (14). The other end of the arc part (15) has a limiting protrusion.

3. The electric suction ice-breaking mechanism for an automotive electric door lock according to claim 2, characterized in that, The center of the first arc-shaped hole (11) is located on the axis of the first pin (6). The first arc-shaped hole (11) is provided with a second gear plate (17) and a transmission block (18). The transmission block (18) is provided with a shaft body (19) on one side. The shaft body (19) passes through the first gear plate (5). The second gear plate (17) is fixedly connected to the shaft body (19).

4. The electric suction ice-breaking mechanism for an automotive electric door lock according to claim 3, characterized in that, The second gear plate (17) is provided with a bent portion (20) facing the first gear plate (5), and the bent portion (20) is used to limit the rotation range of the second gear plate (17).

5. The electric suction ice-breaking mechanism for an automotive electric door lock according to claim 3, characterized in that, When the first gear plate (5) rotates, the chuck drive rod (9) can move relative to the first arc hole (11) to the first position and the second position. When the chuck drive rod (9) is in the first position, the chuck drive rod (9) is against one end of the first arc hole (11), and the pawl drive rod (10) is located at the far end of the inclined side (14). When the chuck drive rod (9) is in the second position, one side of the transmission block (18) is against the outer periphery of the chuck drive rod (9).

6. The electric suction ice-breaking mechanism for an automotive electric door lock according to claim 3, characterized in that, The first pin (6) is provided with a first torsion spring (21), which is used to reset the clamping plate (4). The shaft body (19) is provided with a second torsion spring (22), which is used to reset the transmission block (18). The second pin (8) is provided with a third torsion spring (23), which is used to reset the pawl (7).

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