Automatic locking mechanism of door lock
Through the unique design of the cardboard and pawl structure, the problems of locking pin impact and pre-rotating locking in the existing car door lock mechanism are solved, and automatic locking is realized at the initial position, extending service life and improving reliability.
Patent Information
- Application Number
- CN202510844828.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2025-08-15
AI Technical Summary
When the existing car door lock mechanism is in its initial position, the shape of the clamp plate causes the locking pin to impact the clamp plate, shortening the service life, and the clamp plate needs to be pre-rotated to a certain angle to achieve automatic locking, which is prone to failure in locking.
The unique shape and pawl structure of the card plate are adopted to prevent the card plate from entering the mounting plate lock groove at the initial position, and the locking pin does not interfere when it enters vertically. The card plate and the pawl are snapped through the elastic reset part and the drive part, realizing automatic locking at the initial position.
It avoids collision between the locking pin and the clamping plate, extends the service life of the door lock, and automatically locks can be achieved in the initial position, avoiding locking failure under additional auxiliary conditions.
Smart Images
Figure CN120486833A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of automobile door locks, and in particular relates to an automatic locking mechanism for a door lock. Background Art
[0002] Currently, it is very common to use a card plate and pawl structure to lock car door locks. However, due to the shape of the card plate, when the current car lock mechanism is in operation, part of the card plate structure falls into the U-shaped groove of the mounting plate in the initial open position. This causes the lock pin to collide with the card plate when entering the U-shaped groove of the mounting plate from a direction perpendicular to the mounting plate, shortening the service life of the door lock. Once this problem occurs, it is easy to cause the door lock to fail to operate, affecting the smooth engagement of the door latch. At the same time, due to the requirements of the automatic locking action, the existing door lock requires the card plate to be rotated to a certain angle in advance. In other words, locking requires additional auxiliary conditions. In special circumstances, it is easy to cause the door to be locked when it is not actually locked. Summary of the Invention
[0003] In response to the above problems, the present invention proposes an automatic locking mechanism for a door lock, comprising: a card plate, a pawl and a mounting plate, wherein the card plate and the pawl are respectively rotatably arranged on the mounting plate, and the card plate and the pawl are provided with corresponding elastic reset parts on the mounting plate, and a lock slot is provided on the mounting plate, and the card plate and the pawl are respectively located on both sides of the lock slot, driving the card plate to pass through the lock slot and engage with the pawl.
[0004] Optionally, a lock head is provided on one end of the clamping plate, and a through hole is provided on the other end. The lock head is engaged with the pawl through a first rotating shaft arranged in the through hole and rotatably arranged on the mounting plate.
[0005] Optionally, a card strip is provided on the card plate, and the card strip is located close to the through hole.
[0006] Optionally, a groove is formed at the connection between the lock head and the body of the clamping plate, so that the groove is engaged with the pawl.
[0007] Optionally, the elastic reset portion is a torsion spring, the torsion spring is sleeved on the first rotating shaft, and the torsion spring is matched with the through hole.
[0008] Optionally, a driving portion is further included, and the driving portion can be engaged with the card strip on the card plate to drive the card plate to rotate.
[0009] Optionally, the driving part includes a first control part, a second control part, a third control part and a locking top part, the second control part and the third control part are concentric and rotatably arranged on the first control part, the second control part is located above the third control part, the first control part is arranged on the mounting plate, one end of the locking top part is located above the first control part and is connected to the third control part through a second rotating shaft, and the other end is arranged in a first sliding groove on the first control part and can be clamped with the card strip on the card plate.
[0010] Optionally, the locking top member includes a locking plate, the second rotating shaft and a transmission plate, the locking plate and the transmission plate are mounted on the second rotating shaft, the locking plate is located below the transmission plate, the transmission plate is connected to the third control member, and the first guide column provided on the locking plate is located in the first sliding groove.
[0011] Optionally, the second control member includes a lock disengagement plate and a second guide column, a second slide groove is provided on the lock disengagement plate, and the second guide column cooperates with the second slide groove.
[0012] Optionally, the pawl includes a third rotating shaft, a grab plate and a stop block, one end of the grab plate is provided on the mounting plate through the third rotating shaft, and the other end is abutted against the stop block, and a locking angle is provided on the grab plate, and the locking angle is clamped with the clamping plate.
[0013] The automatic door lock mechanism provided by the present invention has the following advantages compared with the prior art: Through the unique shape of the card plate and the corresponding pawl structural features, a cantilever structure of the card plate is realized, and the card plate is not located in the lock groove (U-shaped groove) of the mounting plate in the initial position. The locking pin enters the U-shaped groove of the mounting plate from a direction perpendicular to the mounting plate, and does not interfere with the U-shaped groove of the mounting plate, driving the card plate to rotate, so that the door lock mechanism can be automatically locked in the initial position, avoiding the problem that some features of the existing card plate are in the U-shaped groove of the mounting plate in the initial position, blocking the U-shaped groove of the mounting plate and requiring the card plate to be rotated to a certain angle to achieve automatic locking.
[0014] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0016] Figure 1 A schematic diagram of an automatic locking mechanism for a door lock in an embodiment of the present invention is shown; Figure 2 A schematic diagram showing the automatic locking mechanism of a door lock in an embodiment of the present invention with the mounting plate removed; Figure 3 A schematic diagram of a second control member of the automatic locking mechanism of a door lock in an embodiment of the present invention is shown; Figure 4 A schematic diagram of a first control component of an automatic locking mechanism for a door lock in an embodiment of the present invention is shown; Figure 5 A schematic diagram of the locked position of the automatic locking mechanism of a door lock in an embodiment of the present invention is shown.
[0017] In the figure, 1. card plate; 10. first rotating shaft; 11. lock head; 12. card strip; 13. groove; 2. ratchet; 21. third rotating shaft; 22. grab plate; 23. stop block; 24. lock angle; 3. mounting plate; 31. lock groove; 4. driving part; 41. first control member; 411. first slide groove; 42. second control member; 421. lock disengagement plate; 422. second guide column; 423. second slide groove; 43. third control member; 44. lock top member; 441. lock plate; 442. second rotating shaft; 443. transmission plate; 444. first guide column. DETAILED DESCRIPTION
[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.
[0019] like Figure 1As shown, the present invention provides an automatic locking mechanism for a door lock, comprising: a card plate 1, a pawl 2, and a mounting plate 3. The card plate 1 and the pawl 2 are respectively rotatably mounted on the mounting plate 3, and the card plate 1 and the pawl 2 are provided with corresponding elastic reset portions on the mounting plate 3. A lock slot 31 is provided on the mounting plate 3, and the card plate 1 and the pawl 2 are respectively located on either side of the lock slot 31, so that the card plate 1 is driven through the lock slot 31 and engages with the pawl 2. It should be noted that the initial position of the card plate 1 is on one side of the lock slot 31, with no portion thereof being within the lock slot 31. Furthermore, the card plate 1 does not need to be rotated a certain angle in advance; it only needs to be driven to rotate to a position where it engages with the pawl 2 to achieve locking of the vehicle door. Since no portion of the card plate 1 in the present invention is within the lock slot 31, the lock pin can enter the lock slot 31 from a direction perpendicular to the mounting plate 3, thereby avoiding collision between the lock pin and the card plate 1 and increasing the service life of the door lock. Compared to existing door locks, the latch plate 1 of the present invention does not require pre-rotation to a certain angle to achieve locking engagement with the pawl 2. This means that locking requires no additional auxiliary conditions and is less likely to fail in special circumstances. Furthermore, the elastic return portion allows the latch plate 1 and pawl 2 to maintain or return to their initial positions after actuation. Optionally, the locking slot 31 is a U-shaped slot.
[0020] In one embodiment, a lock head 11 is provided on one end of the card plate 1, and a through hole is provided on the other end. A first rotating shaft 10 is provided in the through hole and rotatably mounted on the mounting plate 3, and the lock head 11 is engaged with the pawl 2. The door lock is locked by the cooperation between the lock head 11 and the pawl 2. It should be noted that the card plate 1 is a single independent plate-like structure. In order to facilitate locking, the lock head 11 is provided on the end of the card plate 1. The outer structure of the lock head 11 is similar to a mountain structure, or can be a pointed needle structure, which improves the locking effect.
[0021] like Figure 2 As shown, in one embodiment, a clamping strip 12 is provided on the clamping plate 1, and the clamping strip 12 is located near the through hole. Specifically, a hook-shaped structure is provided at the end of the clamping strip 12, which facilitates engagement with the driving portion 4 of the clamping strip 12 through the hook-shaped structure, thereby driving the clamping plate 1 to rotate.
[0022] In one embodiment, a groove 13 is formed at the connection between the lock head 11 and the body of the card plate 1, so that the groove 13 engages with the pawl 2. It should be noted that to achieve locking of the vehicle door, the groove 13 is formed at the connection between the lock head 11 and the body of the card plate 1. The groove 13 can engage with the latching point structure on the pawl 2 to achieve locking. Furthermore, if unlocking is required, the pawl 2 can be driven away from the card plate 1 to achieve unlocking, that is, the pawl 2 is separated from the groove 13 on the card plate 1.
[0023] In one embodiment, the elastic return portion is a torsion spring, which is sleeved onto the first rotating shaft 10 and engages with the through hole. It should be noted that the torsion spring enables the latch 1 to return to its initial position when unlocked after being locked, and also maintains its position. In addition to a torsion spring, other common springs can also be used, provided that the spring is positioned so that one end is connected to the latch 1 and the other end is attached to the mounting plate 3, thereby achieving the same function as a torsion spring.
[0024] like Figure 1 As shown, in one embodiment, a driving unit 4 is further included, and the driving unit 4 can engage with the card strip 12 on the card plate 1 to drive the card plate 1 to rotate. The card plate 1 is driven to rotate by the driving unit 4. It should be noted that the driving unit 4 is also capable of rotating, and after the pawl 2 is engaged and locked with the card plate 1, the driving unit 4 no longer provides driving force. The driving unit 4 is provided with a torsion spring, and under the action of the torsion spring, the driving unit 4 resets. When unlocking, that is, the pawl 2 is separated from the card plate 1, the card plate 1 automatically resets because the torsion spring is sleeved on the first rotating shaft 10. At this time, the driving unit 4 can be driven again to engage with the card strip 12 on the card plate 1, and the cycle is repeated.
[0025] In one embodiment, the driving unit 4 includes a first control member 41, a second control member 42, a third control member 43, and a locking member 44. The second control member 42 and the third control member 43 are concentrically and rotatably arranged on the first control member 41. The second control member 42 is located above the third control member 43. The first control member 41 is arranged on the mounting plate 3. One end of the locking member 44 is located above the first control member 41 and is connected to the third control member 43 via a second rotating shaft 442. The other end is arranged in a first sliding groove 411 provided on the first control member 41 and can be engaged with the clip 12 on the card plate 1. By first driving the third control member 43 to rotate, the third control member 43 can push the locking member 44 to move in the first sliding groove 411, so that the head of the locking member 44 abuts or is engaged with the clip 12 on the card plate 1, thereby driving the card plate 1 to rotate until the card plate 1 is engaged with the pawl 2. Optionally, the head of the locking member 44 has an arcuate structure or a structure similar to the groove 13, thereby facilitating engagement with the clip 12 on the clip 1. Specifically, the second control member 42 and the third control member 43 share a common rotation axis, and a torsion spring is mounted on the rotation axis. When the clip 1 is engaged with the pawl 2, the torsion spring forces the second and third control members 42 and 43 to return to their original positions. Furthermore, the third control member 43 is connected to a drive motor to drive the third control member 43. Optionally, the third control member 43 may be a pulley.
[0026] like Figure 3As shown, in one embodiment, the lock top member 44 includes a lock plate 441, a second rotating shaft 442 and a transmission plate 443. The lock plate 441 and the transmission plate 443 are sleeved on the second rotating shaft 442. The lock plate 441 is located below the transmission plate 443. The transmission plate 443 is connected to the third control member 43, as shown in FIG. Figure 4 As shown, the first guide post 444 provided on the lock plate 441 is located in the first slide groove 411. Optionally, the head of the lock plate 441 has an arc-shaped structure or a structure similar to the groove 13, so as to facilitate the engagement with the card strip 12. It should be noted that the end of the lock plate 441 that cooperates with the second rotating shaft 442 and the transmission plate 443 is above the mounting plate 3, that is, in a suspended state, thereby driving the third control member 43 to rotate, which can push the transmission plate 443. Under the action of the transmission plate 443, one end of the lock plate 441 is pushed to rotate. Moreover, since the lock plate 441, the second rotating shaft 442 and the transmission plate 443 are in a suspended state, the first guide post 444 provided on the lock plate 441 can slide in the first slide groove 411, and the lock plate 441 pushes the card strip 12, thereby realizing the rotation of the card plate 1. In addition, a corresponding torsion spring can also be provided on the second rotating shaft 442 so that the lock plate 441 can be reset more completely, avoiding the situation where it cannot be completely reset, or can only be reset to a half position, avoiding affecting the use of locking the door.
[0027] like Figure 3 As shown, in one embodiment, the second control member 42 includes a lock disengagement plate 421 and a second guide post 422. The first guide post 444 is provided at the end of the lock plate 441, specifically, the first guide post 444 is close to the clamping strip 12. The lock disengagement plate 421 is provided with a second slide groove 423, and the second guide post 422 cooperates with the second slide groove 423. The lock disengagement plate 421 cooperates with the second guide post 422 on the lock disengagement plate 421 to limit the position of the lock disengagement plate 421, and indirectly limits the position of the first control member 41. In addition, the second guide post 422 can block one side of the third control member 43, thereby limiting the rotation angle of the third control member 43.
[0028] like Figure 2As shown, in one embodiment, the pawl 2 includes a third rotating shaft 21, a gripping plate 22, and a stop block 23. One end of the gripping plate 22 is mounted on the mounting plate 3 via the third rotating shaft 21, and the other end abuts the stop block 23. The gripping plate 22 is provided with a locking angle 24, which engages with the card 1. Optionally, a torsion spring can be mounted on the third rotating shaft 21 to maintain or return the gripping plate to its initial position after actuation. It should be noted that the stop block 23 prevents the gripping plate 22 from excessively rotating due to the presence of the torsion spring. Under the blocking action of the stop block 23, the gripping plate 22 remains in this position, thereby facilitating the engagement of the groove 13 on the head of the card 1 with the locking angle 24. When unlocking is required, the gripping plate 22 on the pawl 2 can be moved away from the head of the card 1, causing the card 1 to begin its reset movement, thereby separating the card 1 from the pawl 2 and achieving unlocking. In addition, the locking angle 24 can be provided with a raised structure to engage or mesh with the groove 13 on the head of the card 1, achieving locking.
[0029] In summary, if Figure 5 As shown, the purpose of the present invention is to provide an automatic locking mechanism for a door lock. Through the unique shape of the card plate 1 and the structural features coordinated therewith, a cantilever structure of the card plate 1 is realized, so that the card plate 1 will not interfere with the lock groove (U-shaped groove) of the mounting plate 3 at the initial position. At the same time, due to the cooperation of the first control member 41, the second control member 42, the third control member 43 and the lock top member 44 with the card plate 1, the door lock mechanism can be automatically locked in the initial position, solving the problem that the card plate 1 blocks the U-shaped groove structure of the mounting plate 3 and the card plate 1 needs to be rotated to a certain angle to achieve the automatic locking action.
[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. An automatic locking mechanism for a door lock, characterized in that: include: A card plate (1), a pawl (2) and a mounting plate (3), wherein the card plate (1) and the pawl (2) are respectively rotatably mounted on the mounting plate (3), and the card plate (1) and the pawl (2) are provided with corresponding elastic reset portions on the mounting plate (3), and a locking groove (31) is provided on the mounting plate (3), wherein the card plate (1) and the pawl (2) are respectively located on both sides of the locking groove (31), and the card plate (1) is driven to pass through the locking groove (31) and be engaged with the pawl (2).
2. The automatic door locking mechanism according to claim 1, characterized in that: A lock head (11) is provided on one end of the clamping plate (1), and a through hole is provided on the other end. A first rotating shaft (10) is provided in the through hole and is rotatably provided on the mounting plate (3), and the lock head (11) is clamped with the pawl (2).
3. The automatic door locking mechanism according to claim 2, characterized in that: A clamping strip (12) is provided on the clamping plate (1), and the clamping strip (12) is located close to the through hole.
4. The automatic door locking mechanism according to claim 2, characterized in that: A groove (13) is formed at the connection between the lock head (11) and the body of the clamping plate (1), so that the groove (13) is clamped with the pawl (2).
5. The automatic door locking mechanism according to claim 2, characterized in that: The elastic reset portion is a torsion spring, the torsion spring is sleeved on the first rotating shaft (10), and the torsion spring is matched with the through hole.
6. The automatic door locking mechanism according to claim 1, characterized in that: It also includes a driving portion (4), which can be engaged with a clamping strip (12) on the clamping plate (1) to drive the clamping plate (1) to rotate.
7. The automatic door locking mechanism according to claim 6, characterized in that: The driving part (4) comprises a first control part (41), a second control part (42), a third control part (43) and a locking top part (44); the second control part (42) and the third control part (43) are concentrically and rotatably arranged on the first control part (41); the second control part (42) is located above the third control part (43); the first control part (41) is arranged on the mounting plate (3); one end of the locking top part (44) is located above the first control part (41) and is connected to the third control part (43) through a second rotating shaft (442); the other end is arranged in a first sliding groove (411) provided on the first control part (41) and can be engaged with the card strip (12) on the card plate (1).
8. The automatic door locking mechanism according to claim 7, characterized in that: The locking top member (44) includes a locking plate (441), the second rotating shaft (442) and a transmission plate (443); the locking plate (441) and the transmission plate (443) are sleeved on the second rotating shaft (442); the locking plate (441) is located below the transmission plate (443); the transmission plate (443) is connected to the third control member (43); and the first guide column (444) provided on the locking plate (441) is located in the first sliding groove (411).
9. The automatic door locking mechanism according to claim 7, characterized in that: The second control member (42) includes a lock disengagement plate (421) and a second guide column (422). A second slide groove (423) is provided on the lock disengagement plate (421), and the second guide column (422) cooperates with the second slide groove (423).
10. The automatic door locking mechanism according to claim 1, characterized in that: The pawl (2) comprises a third rotating shaft (21), a grab plate (22) and a stop block (23); one end of the grab plate (22) is arranged on the mounting plate (3) via the third rotating shaft (21), and the other end is in contact with the stop block (23); a locking angle (24) is provided on the grab plate (22), and the locking angle (24) is engaged with the clamping plate (1).