Door lock with double locking latching mechanism

Abstract

The utility model provides a door lock with double lock latching mechanism, including casing, backplate, latching connecting rod, latching pull wire, release connecting rod and double lock latching mechanism, the double lock latching mechanism sets up between casing and backplate, latching connecting rod one end is connected with latching pull wire, and latching connecting rod other end is connected on double lock latching mechanism, the release connecting rod is connected with double lock latching mechanism same. Through the cooperation of the pawl and the pawl auxiliary rod realizes a lock function, and simultaneously realizes two lock function through the cooperation of latching connecting rod and clamping plate, and the two lock locking function realized through above -mentioned structure is under the premise of guaranteeing safety, and its linkage level is higher, and the work is smooth.

Description

Technical Field

[0001] This utility model relates to the field of automotive door lock technology, and in particular to a door lock with a double-lock engaging mechanism. Background Technology

[0002] Currently, in vehicles, door locks are a crucial component for closing vehicle doors, and their stability and accuracy are key indicators of their usability. However, current door locks typically use a single lock for engagement and release. In certain environments, a single lock structure is insufficient for most needs. Double-lock engagement structures are complex in their connection between the two locking mechanisms, easily leading to connection problems. Publicly available patent 202511051548.3 discloses a door lock mechanism and vehicle. The door lock mechanism includes a housing, a ratchet, and a pawl. The pawl includes a floating bracket and a floating pawl. When the door lock mechanism switches from an unlocked to a locked state, the ratchet pushes the floating pawl to rotate relative to the floating bracket. When the door lock mechanism switches from a locked to an unlocked state, the floating pawl is pushed by the floating bracket and rotates synchronously with it, while the ratchet rotates following the rotation of the floating pawl. When the door lock mechanism switches from the unlocked state to the locked state, the floating pawl rotates independently relative to the housing, while the floating bracket remains fixed relative to the housing. Only the floating pawl impacts the ratchet. Due to the small mass and moment of inertia of the floating pawl, the impact inertia and energy during the collision between the pawl and the ratchet are reduced, thereby reducing vibration and impact noise. Although multiple buffer components are used to achieve multi-level buffering, the connection between the two locking and engaging structures is still relatively complex, easily leading to problems with smooth connection. Therefore, solving the problem of unsmooth connection in existing double-lock engaging mechanisms is particularly important. Utility Model Content

[0003] The purpose of this invention is to provide a door lock with a double-locking engagement mechanism. The lock achieves a first-level locking function through the cooperation of a pawl and a pawl auxiliary rod, and a second-level locking function through the cooperation of a locking linkage and a locking plate. The double-locking function achieved by the above structure ensures safety while maintaining a high level of linkage and smooth operation, thus solving the problem of poor operation of existing double-locking engagement mechanisms.

[0004] This utility model provides a door lock with a double-locking suction mechanism, including a housing, a back plate, a suction rod, a suction cable, a release rod, and a double-locking suction mechanism. The double-locking suction mechanism is disposed between the housing and the back plate. One end of the suction rod is connected to the suction cable, and the other end of the suction rod is connected to the double-locking suction mechanism. The release rod is also connected to the double-locking suction mechanism.

[0005] A further improvement is that the double-locking engagement mechanism includes a base plate, a locking plate, a signal rod, and a pawl. The locking plate is disposed on the base plate, the signal rod is disposed next to the locking plate and is disposed on the base plate via a first rotating shaft, the signal rod rotates around the first rotating shaft, a first switch is disposed next to the first rotating shaft, the pawl is disposed on the base plate via a second rotating shaft, the pawl rotates around the second rotating shaft, a second switch is disposed next to the second rotating shaft.

[0006] A further improvement is that a first return spring is provided on the first rotating shaft, and a first buffer block is provided next to the first rotating shaft.

[0007] A further improvement is that a second return spring is provided on the second rotating shaft, and a second buffer block is provided next to the second rotating shaft.

[0008] A further improvement is that a pawl auxiliary rod is provided next to the pawl, and the locking work is completed by the pawl auxiliary rod cooperating with the pawl.

[0009] A further improvement is that the attraction link is mounted on the first rotating shaft.

[0010] A further improvement is that the release linkage is mounted on the second rotating shaft.

[0011] A further improvement is that a suction motor is provided at the rear end of the suction cable. The suction motor drives the suction cable to pull the suction linkage, thereby driving the double-lock suction mechanism to work.

[0012] The beneficial effects of this utility model are as follows: A first-level locking function is achieved through the cooperation of the pawl and the pawl auxiliary rod, while a second-level locking function is achieved through the cooperation of the suction link and the locking plate. This dual-locking function, achieved through the above structure, ensures a high level of linkage and smooth operation while maintaining safety. Through the linkage between the signal rod and the locking plate, the first switch can detect whether the locking plate has reached the second-level locking position, achieving self-check protection of the locked state. The suction link is coaxial with the locking plate, allowing it to act on any position of the locking plate to reach the second-level locking position. Simultaneously, the suction link returns to its initial position under the action of the return spring, completing the suction action. After suction, it returns to its initial position without affecting the movement of the locking plate switch. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure and appearance of this utility model.

[0014] Figure 2 This is a schematic diagram of the appearance of the double-locking suction mechanism of this utility model.

[0015] Figure 3 This is a schematic diagram of the fully open position of the double-locking suction mechanism of this utility model.

[0016] Figure 4This is a schematic diagram of the position of the first lock in the double-lock engaging mechanism of this utility model.

[0017] Figure 5 This is a schematic diagram of the position of the two locks in the double-locking attraction mechanism of this utility model.

[0018] The components are: 1-shell, 2-back plate, 3-closing linkage, 4-closing cable, 5-release linkage, 6-base plate, 7-clamping plate, 8-signal rod, 9-pawl, 10-first rotating shaft, 11-first switch, 12-second rotating shaft, 13-second switch, 14-first return spring, 15-first buffer block, 16-second return spring, 17-second buffer block, 18-pawl auxiliary rod, 19-closing motor. Detailed Implementation

[0019] To enhance understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are for illustrative purposes only and do not constitute a limitation on the scope of protection of this utility model.

[0020] like Figure 1-5 As shown, this embodiment provides a door lock with a double-locking suction mechanism, including a housing 1, a back plate 2, a suction link 3, a suction cable 4, a release link 5, and a double-locking suction mechanism. The double-locking suction mechanism is disposed between the housing 1 and the back plate 2. One end of the suction link 3 is connected to the suction cable 4, and the other end of the suction link 3 is connected to the double-locking suction mechanism. The release link 5 is also connected to the double-locking suction mechanism. The double-locking suction mechanism includes a base plate 6, a locking plate 7, a signal rod 8, and a pawl 9. The locking plate 7 is disposed on the base plate 6, and the signal rod 8 is disposed next to the locking plate 7 and is disposed on the base plate 6 via a first rotating shaft 10. The signal rod 8 rotates around the first rotating shaft 10. A first switch 11 is disposed next to the first rotating shaft 10. The pawl 9 is disposed on the base plate 6 via a second rotating shaft 12 and rotates around the second rotating shaft 12. A second switch 13 is disposed next to the second rotating shaft 12. A first return spring 14 is provided on the first rotating shaft 10, and a first buffer block 15 is provided next to the first rotating shaft 10. A second return spring 16 is provided on the second rotating shaft 12, and a second buffer block 17 is provided next to the second rotating shaft 12. A pawl auxiliary rod 18 is provided next to the pawl 9, and the locking operation is completed by the pawl auxiliary rod 18 cooperating with the pawl 9. The suction link 3 is provided on the first rotating shaft 10. The release link 5 is provided on the second rotating shaft 12. A suction motor 19 is provided at the rear end of the suction cable 4, and the suction motor 19 drives the suction cable 4 to pull the suction link 3, thereby driving the double-lock suction mechanism to work.

[0021] The principle of the suction mechanism: When the locking plate 7 is in the fully open position, it rotates to the first locking position. Under the action of the second return spring 16, the pawl 9 and the pawl auxiliary rod 18 rotate around the second rotating shaft 12 to the locked position, realizing the first locking function. The state of the second switch 13 changes, and the pull cable 4 pulls the pull rod 3, causing the pull rod 3 to rotate around the first rotating shaft 10. The pull rod 3 is coaxial with the locking plate 7. After the pull rod 3 rotates and contacts the protruding feature of the locking plate 7, it drives the locking plate 7 to rotate together to the second locking position. The signal rod 8 is linked with the locking plate 7, and the first switch 11 can detect whether the locking plate 7 has reached the second locking position. During the rotation, the pawl 9 is pushed open and then returns to the locked position under the action of the second return spring 16, realizing the second locking function. Then, the pull rod 3 returns to the initial position under the action of the first return spring 14, completing the pull action.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A door lock with a double-lock engagement mechanism, characterized in that: It includes a housing (1), a back plate (2), a suction rod (3), a suction cable (4), a release rod (5), and a double-lock suction mechanism. The double-lock suction mechanism is located between the housing (1) and the back plate (2). One end of the suction rod (3) is connected to the suction cable (4), and the other end of the suction rod (3) is connected to the double-lock suction mechanism. The release rod (5) is also connected to the double-lock suction mechanism.

2. A door lock with a double-lock engagement mechanism as described in claim 1, characterized in that: The double-locking engagement mechanism includes a base plate (6), a locking plate (7), a signal rod (8), and a pawl (9). The locking plate (7) is disposed on the base plate (6). The signal rod (8) is disposed next to the locking plate (7) and is disposed on the base plate (6) via a first rotating shaft (10). The signal rod (8) rotates around the first rotating shaft (10). A first switch (11) is disposed next to the first rotating shaft (10). The pawl (9) is disposed on the base plate (6) via a second rotating shaft (12). The pawl (9) rotates around the second rotating shaft (12). A second switch (13) is disposed next to the second rotating shaft (12).

3. A door lock with a double-lock engagement mechanism as described in claim 2, characterized in that: A first reset spring (14) is provided on the first rotating shaft (10), and a first buffer block (15) is provided next to the first rotating shaft (10).

4. A door lock with a double-lock engagement mechanism as described in claim 2, characterized in that: A second reset spring (16) is provided on the second rotating shaft (12), and a second buffer block (17) is provided next to the second rotating shaft (12).

5. A door lock with a double-lock engaging mechanism as described in any one of claims 2-4, characterized in that: A pawl auxiliary rod (18) is provided next to the pawl (9), and the locking work is completed by the pawl auxiliary rod (18) cooperating with the pawl (9).

6. A door lock with a double-lock engagement mechanism as described in claim 2, characterized in that: The suction link (3) is mounted on the first rotating shaft (10).

7. A door lock with a double-lock engagement mechanism as described in claim 2, characterized in that: The release link (5) is mounted on the second rotating shaft (12).

8. A door lock with a double-lock engagement mechanism as described in claim 1, characterized in that: The suction cable (4) is equipped with a suction motor (19) at its rear end. The suction motor (19) drives the suction cable (4) to pull the suction connecting rod (3), thereby driving the double-lock suction mechanism to work.

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