Compact double-pull unlocking central control door lock

Abstract

The invention discloses a compact double-pull unlocking central control door lock which comprises a lock block assembly, a stirring arm used for stirring a buckle block is rotationally arranged on the lock block assembly, a sliding arm is arranged on the stirring arm in a sliding mode, a supporting vertical plate is arranged on the lock block assembly, and a sliding seat controlled by a driving assembly is arranged on the supporting vertical plate in a sliding mode. A pushing shaft on the sliding seat penetrates into a kidney-shaped hole formed in the sliding arm in the sliding direction of the sliding arm, a second torsional spring is arranged on the sliding seat, a first shifting piece sprung by the first torsional spring is rotationally arranged on the locking block assembly, and an outer door handle connecting block, an inner door handle connecting block and a locking pull wire connecting block are rotationally arranged on the locking block assembly. When the inner door handle connecting block is pulled in a locking state, the inner door handle connecting block pushes the locking stay wire connecting block to rotate, and the sliding seat is moved to an unlocking position. The compact double-pull unlocking central control door lock can realize double-pull unlocking of the inner door handle, and is suitable for vehicle type installation in which a groove matched with a vehicle door retaining ring is close to the edge of a vehicle door.

Description

Technical Field

[0001] This invention belongs to the field of automotive central locking technology, specifically a compact double-pull unlocking central locking system. Background Technology

[0002] The central locking system of a car is a device used to control whether a car door can be opened. It includes a lock block assembly and a locking device. The lock block assembly has a groove on one side that mates with the door latch. A locking block and a latch block are rotatably mounted on both sides of the groove. A return torsion spring is mounted on the pivot of both the locking block and the latch block. When the locking block is moved by the door latch, it will be blocked by the latch block and cannot return to its original position, thus locking the door. By moving the latch block, the locking block can be unlocked, and the locking block can return to its original position under the action of the torsion spring, thereby opening the door.

[0003] The lock block assembly is equipped with a swing arm assembly for actuating the latch block, an inner door handle connecting arm, and an outer door handle connecting arm. The swing arm assembly is controlled by a locking device motor, and the motor is controlled to rotate forward and backward by a key, thereby putting the lock block assembly into a locked or unlocked state. In the locked state, pulling the inner and outer door handles directly will not actuate the latch block, and the door cannot be opened. In the unlocked state, pulling the inner and outer door handles will actuate the latch block, and the door can be opened directly.

[0004] Most automotive door locks can only control the locking and unlocking of the door lock via a motor. In some models, when the door is locked, it requires two pulls of the inner door handle to open, while the outer door handle cannot be pulled. This application aims to provide a door lock unlocking structure that allows the door to be opened by pulling the inner door handle twice when the door is locked, while the outer door handle cannot be pulled.

[0005] CN116988698A discloses a double-pull unlocking structure for a locking device, including a housing, a locking block assembly, and a locking device assembly. The locking block assembly has a groove on one side for engaging with a door latch, and a locking block and a latch block are rotatably disposed on both sides of the groove. The locking block assembly also includes a rotatably disposed unlocking block. The housing has an elastic element for resetting the locking block, the latch block, and the unlocking block. The latch block has a toggle part on the side facing the unlocking block, and a toggle block that engages with the toggle part is slidably disposed on the unlocking block. The locking device assembly includes an electrically driven structure, a swing arm, a connecting rod, and a locking mechanism. The lock mechanism includes a torsion spring, a sliding groove on the swing arm, a slider at one end of the connecting rod and a lever at the other end, the slider slidingly disposed within the sliding groove, a reset torsion spring on the swing arm for pushing the lever to a position engaging with the lever, a pusher on the unlocking block, and an inner door handle drive structure on the housing for pulling the inner door handle to push the pusher. An unlocking slider, movable by the swing arm and capable of being moved, is slidably disposed within the housing. The unlocking slider can be pushed by the inner door handle drive structure to move the swing arm from the locked position to the unlocked position. While this double-pull unlocking structure enables double-pull unlocking of the inner door handle, its overall lateral span is large, occupying significant lateral space, making it unsuitable for installation on vehicles where the door latch groove is close to the door edge. Summary of the Invention

[0006] This invention addresses the shortcomings of existing technologies by providing a compact double-pull unlocking central locking system. This compact double-pull unlocking central locking system features a redesigned structure that fully utilizes the thickness of the car door while still enabling double-pull unlocking of the inner door handle. The overall structure is more compact, reducing the space occupied on both sides of the groove where the door latch engages, thus making it suitable for installation on car models where the groove for the door latch engages is close to the edge of the door.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a compact double-pull unlocking central locking door lock, comprising a lock block assembly. One side of the lock block assembly has a groove for engaging with a door latch. A locking block and a latch block are rotatably disposed on both sides of the groove. A toggle protrusion is disposed on the side of the latch block opposite to the groove. A toggle arm for actuating the toggle protrusion is rotatably disposed on the lock block assembly. A guide groove is disposed on the toggle arm, and a sliding arm is slidably disposed on the guide groove. A support plate is disposed on the side of the lock block assembly opposite to the groove. A sliding seat is slidably disposed on the support plate. A slot is disposed on the sliding arm along the sliding direction of the sliding arm. A push shaft passes through the slot on the sliding seat. A second torsion spring is disposed on the sliding seat to push the sliding arm towards the direction of the first toggle piece. A reciprocating motion of the sliding seat is disposed on the support plate. The moving drive assembly includes a first actuating plate rotatably mounted on the lock block assembly, a first torsion spring for resetting the first actuating plate on the lock block assembly, a sliding arm aligning with the first actuating plate when approaching it, the first actuating plate pushing the sliding arm to move the actuating protrusion, an outer door handle connecting block rotatably mounted on the lock block assembly for moving the first actuating plate, an inner door handle connecting block rotatably mounted on the support plate for moving the first actuating plate, and a locking cable connecting block for moving the sliding seat. The inner door handle connecting block has a first drive arm, and the locking cable connecting block has a second drive arm. When the inner door handle connecting block is pulled in the locked state, the first drive arm pushes the second drive arm to rotate the locking cable connecting block, moving the sliding seat to the unlocked position. This compact dual-pull unlocking central locking system features a redesigned structure that fully utilizes the thickness of the door while still enabling dual-pull unlocking of the inner door handle. The overall structure is more compact, reducing the space occupied on both sides of the door latch groove, thus making it suitable for installation on models where the door latch groove is close to the edge of the door.

[0008] In the above technical solution, preferably, the driving component includes a worm gear driven by a motor disposed on one side of the support plate and a worm wheel rotatably disposed on the support plate and cooperating with the worm gear, wherein the worm wheel rotates to drive the sliding seat to move.

[0009] In the above technical solution, preferably, the sliding seat is slidably disposed between the worm gear and the support plate.

[0010] In the above technical solution, preferably, the worm gear sidewall is provided with a protrusion, and the sliding seat is provided with a groove for the protrusion to extend into and drive the sliding seat to move. As the worm gear rotates, the protrusion can extend into and leave the groove.

[0011] In the above technical solution, preferably, the sliding arm is provided with a waist hole along the sliding direction of the sliding arm, the sliding seat is provided with a push shaft that passes through the waist hole, and the sliding seat is provided with a second torsion spring for pushing the sliding arm toward the direction of the first actuating piece.

[0012] In the above technical solution, preferably, the sidewall of the push shaft extends radially with a blocking portion for blocking the sliding arm.

[0013] In the above technical solution, preferably, the guide groove on the actuating arm extends vertically, the bottom of the sliding arm is provided with a guide part with the same height as the guide groove, and the bottom of the guide part is connected to a limiting block with a width greater than the guide part.

[0014] In the above technical solution, preferably, a mechanical lock connecting block is rotatably provided on the lock block assembly, a pull hole is provided on the mechanical lock connecting block, and a pull rod is provided on the sliding seat that passes through the pull hole.

[0015] In the above technical solution, preferably, a third torsion spring for elastically positioning the locking wire connecting block is provided between the supporting plate and the locking wire connecting block.

[0016] In the above technical solution, preferably, a shell and a support frame are respectively provided on both sides of the support plate, one end of the support frame serves as the outer wall of the locking block assembly, and the support frame is fixed to the support frame and the shell by screws and / or buckles.

[0017] Compared with the prior art, the present invention has the following advantages: This compact double-pull unlocking central locking system has a redesigned structure. While enabling double-pull unlocking of the inner door handle, it makes full use of the thickness space of the car door, and the overall structure is more compact, reducing the space occupied on both sides of the groove of the door latch. Therefore, it can be installed on models where the groove of the door latch is close to the edge of the door. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the internal structure of one side of the supporting plate in an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the internal structure of the other side of the supporting plate in an embodiment of the present invention.

[0022] Figure 5This is a schematic diagram of the internal structure of the locking block assembly in an embodiment of the present invention.

[0023] Figure 6 This is an exploded structural diagram of the locking block assembly, supporting plate, outer shell, and support frame in an embodiment of the present invention.

[0024] Figure 7 This is an exploded structural diagram of the internal parts in an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the sliding block in an embodiment of the present invention.

[0026] Figure 9 This is a schematic diagram of the sliding block in another direction in an embodiment of the present invention.

[0027] Figure 10 This is a schematic diagram of the worm gear structure in an embodiment of the present invention.

[0028] Figure 11 This is a schematic diagram of the sliding arm in an embodiment of the present invention. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: See also Figures 1 to 11A compact double-pull unlocking central locking door lock includes a lock block assembly 1. One side of the lock block assembly 1 has a groove 2 that engages with a door latch. A locking block 3 and a latch block 4 are rotatably mounted on either side of the groove 2. A toggle protrusion 5 is mounted on the side of the latch block 4 opposite to the groove 2. A toggle arm 6 for actuating the toggle protrusion 5 is rotatably mounted on the lock block assembly 1. A guide groove 7 is mounted on the toggle arm 6, and a sliding arm 8 is slidably mounted on the guide groove 7. A support plate 9 is mounted on the side of the lock block assembly 1 opposite to the groove 2. A sliding seat 10 is slidably mounted on the support plate 9. A waist hole 22 is provided on the sliding arm 8 along its sliding direction. A push shaft 23 passes through the waist hole 22 on the sliding seat 10. A second torsion spring 24 is provided on the sliding seat 10 to push the sliding arm 8 towards a first toggle piece 12. A drive assembly 11 for driving the sliding seat 10 to reciprocate is provided on the support plate 9. The lock block assembly 1 is equipped with a first actuating plate 12. A first torsion spring 13 is provided on the lock block assembly 1 for resetting the first actuating plate 12. When the sliding arm 8 approaches the first actuating plate 12, it aligns with the first actuating plate 12. The first actuating plate 12 pushes the sliding arm 8 to drive the actuating arm 6 to actuate the actuating protrusion 5. An outer door handle connecting block 14 for actuating the first actuating plate 12 is rotatably provided on the lock block assembly 1. An inner door handle connecting block 15 for actuating the first actuating plate 12 and a locking cable connecting block 16 for moving the sliding seat 10 are rotatably provided on the support plate 9. A first drive arm 151 is provided on the inner door handle connecting block 15, and a second drive arm 161 is provided on the locking cable connecting block 16. When the inner door handle connecting block 15 is pulled in the locked state, the first drive arm 151 pushes the second drive arm 161 to drive the locking cable connecting block 16 to rotate, moving the sliding seat 10 to the unlocked position. In this embodiment, the movement of the sliding arm 8 controls whether the first actuating plate 12 can drive the actuating arm 6 to rotate. When the sliding arm 8 is located away from the first actuating plate 12, the rotation of the first actuating plate 12 cannot push the actuating arm 6, meaning the central locking system is in a locked state. When the sliding arm 8 is located close to the first actuating plate 12, the rotation trajectory of the first actuating plate 12 passes through the location of the sliding arm 8, which can push the sliding arm 8 to move, thereby driving the actuating arm 6 to rotate, which can actuate the actuating protrusion 5 to unlock the door, meaning the central locking system is in an unlocked state. The movement of the sliding arm 8 is controlled by the drive assembly 11 to switch between the locked and unlocked states. The outer door handle connecting block 14 is used to connect the outer door handle. Pulling the outer door handle can drive the outer door handle connecting block 14 to rotate. The rotation of the outer door handle connecting block 14 drives the first actuating plate 12 to realize the door opening action. In the locked state, the door cannot be opened; in the unlocked state, the door can be opened. The inner door handle connecting block 15 is used to connect the inner door handle. Pulling the inner door handle can drive the inner door handle connecting block 15 to rotate. The rotation of the inner door handle connecting block 15 drives the first actuating piece 12 to realize the door opening action. The door cannot be opened in the locked state, and the door can be opened in the unlocked state.The locking cable connecting block 16 is used to connect the locking cable. The sliding seat 10 has a lever for inserting the locking cable connecting block 16 on one side. The locking cable connecting block 16 can rotate when it is pulled or released by the locking cable, which drives the sliding seat 10 to switch between the unlocked and locked states. In the locked state, when the inner door handle is pulled, the inner door handle connecting block 15 rotates. The inner door handle connecting block 15 first drives the first actuating plate 12 to rotate. Then, the first drive arm 151 on the inner door handle connecting block 15 can push the second drive arm 161, causing the locking cable connecting block 16 to rotate and move the sliding seat 10 to the unlocked position. Due to the obstruction of the first actuating plate 12, the sliding arm 8 does not move when it is against the first actuating plate 12. The push shaft 23 moves along the waist hole 22. After the inner door handle is released, the inner door handle connecting block 15 and the first actuating plate 12 are both reset. The sliding arm 8 moves to the unlocked position by the elastic force of the second torsion spring 24. After the inner door handle is pulled again, the inner door handle connecting block 15 drives the first actuating plate 12 to rotate, and the door can be opened, realizing double pull unlocking.

[0030] Meanwhile, this compact double-pull unlocking central locking system has been redesigned to make full use of the thickness of the door, and the overall structure is more compact, reducing the space occupied on both sides of the groove 2 where the door latch engages. This makes it suitable for installation on models where the groove 2 where the door latch engages is close to the edge of the door.

[0031] In this embodiment, the drive assembly 11 includes a worm gear 18 driven by a motor 17 and disposed on one side of the support plate 9, and a worm wheel 19 rotatably disposed on the support plate 9 and cooperating with the worm gear 18. The worm wheel 19 rotates to drive the sliding seat 10 to move.

[0032] In this embodiment, the sliding seat 10 is slidably disposed between the worm gear 19 and the support plate 9. A sliding channel is formed between the worm gear 19 and the support plate 9, and the sliding seat 10 slides within the sliding channel.

[0033] In this embodiment, to prevent the worm gear 19 from moving when the sliding seat 10 is actively dragged, a protrusion 20 is provided on the side wall of the worm gear 19, and a groove 21 is provided on the sliding seat 10 for the protrusion 20 to extend into and drive the sliding seat 10 to move. As the worm gear 19 rotates, the protrusion 20 can extend into and leave the groove 21. When the worm gear 19 rotates, the protrusion 20 on the worm gear 19 first extends into the groove 21, and then pushes the sliding seat 10 to move. After that, the protrusion 20 will leave the groove 21, and then the worm gear 19 does not need to be driven to move when the sliding seat 10 is actively dragged.

[0034] In this embodiment, to prevent the push shaft 23 from disengaging from the sliding arm 8, the side wall of the push shaft 23 has a blocking portion 25 extending radially to block the sliding arm 8.

[0035] In this embodiment, to prevent the actuating arm 6 from disengaging from the sliding arm 8, the guide groove 7 on the actuating arm 6 extends vertically through the sliding arm 8, and the bottom of the sliding arm 8 is provided with a guide portion 26 that is the same height as the guide groove 7. The bottom of the guide portion 26 is connected to a limiting block 27 with a width greater than the guide portion 26.

[0036] In this embodiment, in order to enable the mechanical lock to directly control the movement of the sliding seat 10 to achieve locking and unlocking operations, a mechanical lock connecting block 28 is rotatably provided on the lock block assembly 1. The mechanical lock connecting block 28 is provided with a pull hole 29, and the sliding seat 10 is provided with a pull rod 30 that passes through the pull hole 29. The rotation of the mechanical lock connecting block 28 can drive the movement of the sliding seat 10, thereby realizing the locking and unlocking operations.

[0037] In this embodiment, a third torsion spring 31 for elastically positioning the locking cable connecting block 16 is provided between the supporting plate 9 and the locking cable connecting block 16. This structure enables the locking cable connecting block 16 to be stably and elastically limited to two positions where the sliding block 10 rotates.

[0038] In this embodiment, a housing 32 and a support frame 33 are respectively provided on both sides of the support plate 9. One end of the support frame 33 serves as the outer wall of the locking block assembly 1. The support frame 33 is fixed to the support frame 33 and the housing 32 by screws and / or buckles.

[0039] In this embodiment, a tactile switch 34 located on the movement trajectory of the sliding seat 10 is also fixed on the side of the support plate 9. When the sliding seat 10 is in the unlocked position, it contacts the contact piece of the tactile switch 34. When the sliding seat 10 is in the locked position, it disengages from the contact piece of the tactile switch 34, thereby enabling the tactile switch 34 to sense the state of the hollow door lock.

[0040] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A compact double-pull unlocking central door lock, comprising a lock block assembly (1), one side of the lock block assembly (1) is provided with a slot (2) matched with a door buckle, lock blocks (3) and buckle blocks (4) are respectively arranged on both sides of the slot (2), characterized in that: The buckle block (4) is provided with a knob (5) on the side opposite to the slot (2), the lock block assembly (1) is rotatably provided with a knob arm (6) for knob (5), the knob arm (6) is provided with a guide slot (7), the guide slot (7) is slidably provided with a sliding arm (8), the lock block assembly (1) is provided with a support vertical plate (9) on the side opposite to the slot (2), the support vertical plate (9) is slidably provided with a sliding seat (10), the sliding arm (8) is provided with a waist hole (22) along the sliding direction of the sliding arm (8), the sliding seat (10) is provided with a push shaft (23) penetrating into the waist hole (22), the sliding seat (10) is provided with a second torsion spring (24) for pushing the sliding arm (8) to the direction of the first knob piece (12), the support vertical plate (9) is provided with a drive assembly (11) for driving the sliding seat (10) to move back and forth, the lock block assembly (1) is rotatably provided with the first knob piece (12), the lock block assembly (1) is provided with a first torsion spring (13) for resetting the first knob piece (12), the sliding arm (8) is aligned with the first knob piece (12) when approaching the first knob piece (12), the first knob piece (12) pushes the sliding arm (8) to drive the knob arm (6) to knob (5), the lock block assembly (1) is rotatably provided with an outer door handle connecting block (14) for knob (5), the support vertical plate (9) is rotatably provided with an inner door handle connecting block (15) for knob (5) and a lock pull wire connecting block (16) for driving the sliding seat (10) to move, the inner door handle connecting block (15) is provided with a first drive arm (151), the lock pull wire connecting block (16) is provided with a second drive arm (161), when the inner door handle connecting block (15) is pulled in the locked state, the first drive arm (151) pushes the second drive arm (161) to drive the lock pull wire connecting block (16) to rotate, and the sliding seat (10) is moved to the unlocked position.

2. A compact dual-pull unlock center door lock as defined in claim 1, characterized in that: The drive assembly (11) comprises a worm (18) driven by a motor (17) provided on one side of the support vertical plate (9) and a worm gear (19) rotatably provided on the support vertical plate (9) and matched with the worm (18), the worm gear (19) rotates to drive the sliding seat (10) to move.

3. A compact dual-pull unlock center latch door lock as defined in claim 2, wherein: The sliding seat (10) is slidably arranged between the worm gear (19) and the support vertical plate (9).

4. A compact dual-pull unlock center latch door lock as defined in claim 3, wherein: The side wall of the worm gear (19) is provided with a protrusion (20), and the sliding seat (10) is provided with a groove (21) for the protrusion (20) to extend into to drive the sliding seat (10) to move, with the rotation of the worm gear (19), the protrusion (20) can extend into and out of the groove (21).

5. A compact dual-pull unlock center latch door lock as defined in claim 1, wherein: The side wall of the push shaft (23) extends radially to have a blocking portion (25) for blocking the sliding arm (8).

6. A compact dual-pull unlock center latch door lock as defined in claim 1, wherein: The guide slot (7) on the toggle arm (6) penetrates up and down, the sliding arm (8) bottom is provided with a guide part (26) consistent with the height of the guide slot (7), and the guide part (26) bottom is connected with a limiting block (27) with a width greater than the guide part (26).

7. A compact dual-pull unlock center latch door lock as defined in claim 1, wherein: A mechanical lock connecting block (28) is rotationally arranged on the lock block assembly (1), the mechanical lock connecting block (28) is provided with a pull hole (29), and the sliding seat (10) is provided with a pull rod (30) penetrating into the pull hole (29).

8. A compact dual-pull unlock center latch door lock as defined in claim 1, wherein: A third torsional spring (31) for elastically positioning the locking pull wire connecting block (16) is arranged between the support vertical plate (9) and the locking pull wire connecting block (16).

9. A compact dual-pull unlock center latch door lock as defined in claim 1, wherein: The support vertical plate (9) is provided with a shell (32) and a support frame (33) on both sides, one end of the support frame (33) serves as the outer side wall of the lock block assembly (1), and the support frame (33) and the shell (32) are fixed through screws and / or buckles.

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