阅读说明：本技术 一种17b多功能门锁总成 (17B multifunctional door lock assembly ) 是由 姚明成 于 2019-10-31 设计创作，主要内容包括：一种17B多功能门锁总成,包括锁体、开启摇臂、外开摇臂、内开摇臂、锁止推杆、外锁止摇臂、锁止联动块、内锁止摇臂、内锁止联动臂,还包括电机、蜗杆、齿轮分总成,内开、外开外锁止功能均是通过棘轮和棘爪的相互啮合作用实现；另外还包括棘轮信号摇臂以及微动开关,可实现车门状态信息的信号传递；与锁止联动块接触的微动开关,可实现车门锁锁止与解锁状态信号的传递以便于实现左右车门锁的中控功能。本发明的车门锁为一体化结构,具有双拉功能,结构紧凑、防尘防水优、传动效率高、控制性能更好等优点。(A17B multifunctional door lock assembly comprises a lock body, an opening rocker arm, an outward opening rocker arm, an inward opening rocker arm, a locking push rod, an outward locking rocker arm, a locking linkage block, an inward locking rocker arm, an inward locking linkage arm, a motor, a worm and a gear sub-assembly, wherein the inward opening and outward locking functions are realized through the mutual meshing action of a ratchet wheel and a pawl; in addition, the automobile door control device also comprises a ratchet signal rocker arm and a microswitch, so that the signal transmission of the automobile door state information can be realized; the microswitch contacted with the locking linkage block can realize the transmission of locking and unlocking state signals of the vehicle door lock so as to realize the central control function of the left and right vehicle door locks. The vehicle door lock disclosed by the invention is of an integrated structure, has the advantages of double-pull function, compact structure, excellent dust and water resistance, high transmission efficiency, better control performance and the like.)

1. A17B multifunctional door lock assembly comprises a lock body (1), a cover plate (2), a shell cover (3) and a dust cover (4); a shell cover (3) is arranged above the lock body (1), a cover plate (2) is arranged below the lock body, and the shell cover (3) is matched with a dustproof cover (4); the method is characterized in that: a motor (20) is arranged on the lock body (1), the motor (20) is matched with a gear sub-assembly (21) through a worm (19), and a gear limiting spring (22) is arranged on the gear sub-assembly (21); the lock body (1) is also provided with an external locking rocker arm shaft (17), an external locking rocker arm stop shaft (18), a ratchet shaft (15), a ratchet return spring (24) and a pawl shaft (8); the outer locking rocker shaft (17) and the outer locking rocker stop shaft (18) are provided with outer locking rockers (28), and the outer locking rocker shaft (17) is matched with the gear limiting spring (22); a ratchet wheel (5) and a pawl (6) are respectively arranged on a ratchet wheel shaft (15) and a pawl shaft (8) between the lock body (1) and the cover plate (2), the ratchet wheel (6) is matched with a ratchet wheel return spring (24), and a pawl return spring (10) is arranged on the pawl shaft (8) and is matched with the pawl (6); an outward opening return spring (9), an opening rocker arm (40), an outward opening rocker arm (41) and a pawl shaft riveting gasket (7) are sequentially arranged on a pawl shaft (8) between the lock body (1) and the shell cover (3) from bottom to top; the opening rocker arm (40) is matched with the locking push rod (39); a locking linkage block (27) is arranged on a ratchet shaft (15) between the lock body (1) and the shell cover (3), a locking push rod (39) is arranged on the locking linkage block (27), a locking linkage torsion spring (11) is further arranged between the locking push rod (39) and the locking linkage block (27), and the locking linkage block (27) is matched with the gear sub-assembly (21); an inward opening rocker arm shaft (31) and an inward locking rocker arm shaft (35) are arranged between the shell cover (3) and the dust cover (4), an inward opening return spring (30) and an inward opening linkage arm (33) are arranged on the inward opening rocker arm shaft (31), and an inward locking linkage arm (29) and a locking linkage torsion spring (34) are arranged on the inward locking rocker arm shaft (35); the inner opening linkage arm (29) is matched with the locking push rod (39), and the inner locking linkage arm (33) is matched with the locking linkage block (27).

2. The 17B multifunctional door lock assembly according to claim 1, wherein: the ratchet shaft (15) is also provided with a ratchet signal rocker arm (42) which is matched with the locking linkage block (27)

The 17B multifunctional door lock assembly according to claim 1, wherein: a shock pad (12), a ratchet shock pad (13), a pawl shock pad (14) and a lock catch shock pad (23) are arranged between the lock body (1) and the cover plate (2).

3. The 17B multifunctional door lock assembly according to claim 1, wherein: the inner-opening linkage arm (33) and the inner-opening rocker shaft (31) are fixedly connected through an inner-opening rocker riveting gasket (32), and the inner-locking linkage arm (29) and the inner-locking rocker shaft (35) are fixedly connected through an inner-locking linkage arm gasket (36).

4. The 17B multifunctional door lock assembly according to claim 1, wherein: the locking signal switch (37) and the door lamp signal switch (38) are fixed on the shell cover through soldering.

5. The 17B multifunctional door lock assembly according to claim 1, wherein: the shell cover (3) and the lock body (1) are fixed through four ST 2.9-12 self-tapping screws (16) and two ST 4.2-19 self-tapping screws (25), and the lock body (1) and the shell cover (3) are provided with sealing soft pads (26).

Technical Field

The invention relates to the field of door locks, in particular to a 17B multifunctional door lock assembly.

Background

Present automobile door lock is mostly split type lock, the locking of split type lock or unblock are connected the transmission through electric actuator's pull rod and lock body mechanical part and are realized, but electric actuator easily takes place the deviation with lock body mechanical part's relative mounted position, the spare part of the two also deforms easily, can cause feedback signal unstability like this, influence the user and use, and because electric actuator is two solitary structures with lock body mechanical part, need link together the two when using, so just so greatly increased the quantity of structural component, manufacturing cost has not only been increased, make the assembly of split type lock more complicated, and in order to guarantee the structural strength of split type lock, only can improve the manufacturing accuracy requirement to the part.

Disclosure of Invention

The invention aims to solve the technical problems and provides a 17B multifunctional door lock assembly.

The purpose of the invention is realized as follows: the utility model provides a multi-functional lock assembly of 17B which characterized in that: A17B multifunctional door lock assembly comprises a lock body, a cover plate, a shell cover and a dust cover; a shell cover is arranged above the lock body, a cover plate is arranged below the lock body, and the shell cover is matched with the dustproof cover; the method is characterized in that: the lock body (1) is provided with a motor, the motor is matched with the gear sub-assembly through a worm, and the gear sub-assembly is provided with a gear limiting spring; the lock body is also provided with an external locking rocker arm shaft, an external locking rocker arm stop shaft, a ratchet return spring and a pawl shaft; the outer locking rocker shaft and the outer locking rocker stop shaft are provided with outer locking rockers, and the outer locking rocker shaft is matched with the gear limiting spring; a ratchet wheel and a pawl are respectively arranged on a ratchet wheel shaft and a pawl shaft between the lock body and the cover plate, the ratchet wheel is matched with a ratchet wheel return spring, and the pawl shaft is provided with a pawl return spring which is matched with the pawl; an outward opening return spring, an opening rocker arm, an outward opening rocker arm and a pawl shaft riveting gasket are sequentially arranged on a pawl shaft between the lock body and the shell cover from bottom to top; the opening rocker arm is matched with the locking push rod; a locking linkage block is arranged on the ratchet shaft between the lock body and the shell cover, a locking push rod is arranged on the locking linkage block, a locking linkage torsion spring is arranged between the locking push rod and the locking linkage block, and the locking linkage block is matched with the gear sub-assembly; an inner-opening rocker arm shaft and an inner-locking rocker arm shaft are arranged between the shell cover and the dust cover, an inner-opening return spring and an inner-opening linkage arm are arranged on the inner-opening rocker arm shaft, and an inner-locking linkage arm and a locking linkage torsion spring are arranged on the inner-locking rocker arm shaft; the inner-opening linkage arm is matched with the locking push rod, and the inner-locking linkage arm is matched with the locking linkage block.

As a preferred technical scheme: the ratchet shaft is also provided with a ratchet signal rocker arm matched with the locking linkage block.

As a preferred technical scheme: and a damping pad, a ratchet damping pad, a pawl damping pad and a lock catch damping pad are arranged between the lock body and the cover plate.

As a preferred technical scheme: the inner-opening linkage arm and the inner-opening rocker shaft are fixedly connected through an inner-opening rocker riveting gasket, and the inner-locking linkage arm and the inner-locking rocker shaft are fixedly connected through an inner-locking linkage arm gasket.

As a preferred technical scheme: the locking signal switch and the door lamp signal switch are fixed on the shell cover through tin soldering.

As a preferred technical scheme: the shell cover and the lock body are fixed through four ST 2.9-12 self-tapping screws and two ST 4.2-19 self-tapping screws, and the lock body and the shell cover are provided with sealing soft pads.

The invention has the advantages that: the inward opening and outward locking functions are finally realized through the mutual meshing action of the ratchet wheel and the pawl; in addition, the automobile door control device also comprises a ratchet signal rocker arm and a microswitch, so that the signal transmission of the automobile door state information can be realized; the microswitch contacted with the locking linkage block can realize the transmission of locking and unlocking state signals of the vehicle door lock so as to realize the central control function of the left and right vehicle door locks. The vehicle door lock disclosed by the invention is of an integrated structure, has the advantages of double-pull function, compact structure, excellent dust and water resistance, high transmission efficiency, better control performance and the like.

Drawings

FIG. 1 is a functional structure diagram of the outward opening door of the present invention;

FIG. 2 is a schematic structural view of the external locking and unlocking function of the present invention;

FIG. 3 is a schematic structural diagram of the in-opening door function of the present invention;

FIG. 4 is a schematic structural view of an electric locking and unlocking function of the present invention;

FIG. 5 is a schematic diagram of a dual pull functional configuration of the present invention;

FIG. 6 is a schematic view of the inner locking and unlocking function of the present invention;

FIG. 7 is a schematic diagram of the functional structure of the anti-false lock of the present invention;

FIG. 8 is an exploded view of the overall structure of the present invention;

FIG. 9 is a schematic view of the lock body structure of the present invention;

figure 10 is a bottom view of the lock body structure of the present invention;

FIG. 11 is a schematic view of the ratchet structure of the present invention;

in the figure: 1-lock body, 2-cover plate, 3-cover plate, 4-dust cover, 5-ratchet, 6-pawl, 7-pawl shaft riveting gasket, 8-pawl shaft, 9-external opening return spring, 10-pawl return spring, 11-locking linkage torsion spring, 12-damping pad, 13-ratchet damping pad, 14-pawl damping pad, 15-ratchet shaft, 16-ST 2.9 self-tapping screw, 17-external locking rocker shaft, 18-external locking rocker shaft, 19-worm, 20-motor, 21-gear subassembly, 22-gear limiting spring, 23-locking damping pad, 24-ratchet return spring, 25-ST 4.2 self-tapping screw, 26-sealing cushion, 27-locking linkage block, 28-external locking rocker, 29-internal locking linkage arm, 30-internal opening return spring, 31-internal opening rocker shaft, 32-internal opening riveting gasket, 33-internal opening linkage arm, 34-locking linkage spring, 35-an internal locking rocker shaft, 36-an internal linkage arm gasket, 37-a locking signal switch, 38-a door lamp signal switch, 39-a locking push rod, 40-an opening rocker arm, 41-an external opening rocker arm and 42-a ratchet wheel signal rocker arm.

Detailed Description

The invention will be further described, but not limited, by reference to the following figures:

A17B multifunctional door lock assembly comprises a lock body 1, a cover plate 2, a shell cover 3 and a dust cover 4; a shell cover 3 is arranged above the lock body 1, a cover plate 2 is arranged below the lock body, and the shell cover 3 is matched with a dustproof cover 4; the method is characterized in that: the lock body 1 is provided with a motor 20, the motor 20 is matched with a gear sub-assembly 21 through a worm 19, and the gear sub-assembly 21 is provided with a gear limiting spring 22; the lock body 1 is also provided with an external locking rocker arm shaft 17, an external locking rocker arm stop shaft 18, a ratchet shaft 15, a ratchet return spring 24 and a pawl shaft 8; the outer locking rocker arm shaft 17 and the outer locking rocker arm stop shaft 18 are provided with outer locking rocker arms 28, and the outer locking rocker arm shaft 17 is matched with the gear limiting spring 22; a ratchet wheel 5 and a pawl 6 are respectively arranged on a ratchet wheel shaft 15 and a pawl shaft 8 between the lock body 1 and the cover plate 2, the ratchet wheel 6 is matched with a ratchet wheel return spring 24, and a pawl return spring 10 is arranged on the pawl shaft 8 and is matched with the pawl 6; an external opening return spring 9, an opening rocker arm 40, an external opening rocker arm 41 and a pawl shaft riveting gasket 7 are sequentially arranged on a pawl shaft 8 between the lock body 1 and the shell cover 3 from bottom to top; the opening rocker arm 40 is matched with the locking push rod 39; a locking linkage block 27 is arranged on the ratchet shaft 15 between the lock body 1 and the shell cover 3, a locking push rod 39 is arranged on the locking linkage block 27, a locking linkage torsion spring 11 is also arranged between the locking push rod 39 and the locking linkage block 27, and the locking linkage block 27 is matched with the gear sub-assembly 21; an inward-opening rocker shaft 31 and an inward-locking rocker shaft 35 are arranged between the shell cover 3 and the dust cover 4, an inward-opening return spring 30 and an inward-opening linkage arm 33 are arranged on the inward-opening rocker shaft 31, and an inward-locking linkage arm 29 and a locking linkage torsion spring 34 are arranged on the inward-locking rocker shaft 35; the inward-opening linkage arm 29 is matched with the locking push rod 39, and the inward-locking linkage arm 33 is matched with the locking linkage block 27.

The ratchet shaft 15 is also provided with a ratchet signal rocker arm 42 which is matched with the locking linkage block 27. A shock pad 12, a ratchet shock pad 13, a pawl shock pad 14 and a lock catch shock pad 23 are arranged between the lock body 1 and the cover plate 2. The inner-opening linkage arm 33 and the inner-opening rocker arm shaft 31 are fixedly connected through an inner-opening rocker arm riveting gasket 32, and the inner-locking linkage arm 29 and the inner-locking rocker arm shaft 35 are fixedly connected through an inner-locking linkage arm gasket 36. The lock signal switch 37 and the door light signal switch 38 are fixed to the case cover by soldering. The cover 3 and the lock body 1 are fixed by four ST 2.9X 12 self-tapping screws 16 and two ST 4.2X 19 self-tapping screws 25, and the lock body 1 and the cover 3 are provided with sealing soft pads 26.

The installation step: respectively installing a shock pad 12, a ratchet shock pad 13, a pawl shock pad 14 and a lock catch shock pad 23 into the lock body 1; a ratchet return spring 24 is arranged in the lock body 1, and then a ratchet 5, a ratchet shaft 15, a pawl return spring 10, a pawl shaft 8 and a pawl 6 are arranged, a cover plate 2 is covered, and the ratchet shaft 15 and the pawl shaft 8 are respectively riveted; an outward opening return spring 9 is arranged on the pawl shaft 8, and then an outward opening rocker arm 41, an opening rocker arm 40 and a pawl shaft riveting gasket 7 are respectively arranged for riveting to form a sub-assembly a; the ratchet signal rocker arm 42 is installed; the locking linkage torsion spring 11 is arranged in the locking linkage block 27, the locking push rod 39 is arranged in the locking linkage block 27, and the locking linkage torsion spring 11 is reliably connected with the locking push rod 39 to form a sub-assembly b; loading the sub-assembly b into the sub-assembly a; the gear sub-assembly 21 is installed and fixed; the gear limiting spring 22 is arranged on the gear sub-assembly 21; the outer locking rocker arm stop shaft 18 and the outer locking rocker arm 28 are firmly connected and riveted; pressing the external locking rocker arm 28 on the gear limit spring 22, and installing the external locking rocker arm shaft 17 into the lock body 1 through the hole of the external locking rocker arm 28 and the gear limit spring 22; the locking signal switch 37 and the door lamp signal switch 38 are arranged in the shell cover 3 and firmly connected by soldering; the inward swing arm shaft 31 is arranged in the shell cover 3; an inward opening return spring 30 and an inward opening linkage arm 33 are respectively arranged in a shell cover 3 and connected with an inward opening rocker shaft 31, and an inward opening rocker riveting gasket 32 is arranged on the inward opening rocker shaft 31 and riveted, so that the inward opening linkage arm 33 can rotate on the inward opening rocker shaft 31; mounting the inner locking rocker shaft 35 in the housing cover 3; a locking linkage button spring 34 and an inner locking linkage arm 29 are respectively arranged in the shell cover 3 and connected with an inner locking rocker shaft 35, and then an inner locking linkage arm gasket 36 is arranged on the inner locking rocker shaft 35 and riveted, so that the inner locking linkage arm 29 can rotate in the inner locking rocker shaft 35; the worm 19 is arranged on the motor 20 and then is arranged in the shell cover 3, so that the motor 20 is reliably connected with the copper sheet of the shell cover 3; and then the shell cover 3 is buckled on the lock body 1, the lock body is screwed and fixed through four ST 2.9-12 self-tapping screws 16 and two ST 4.2-19 self-tapping screws 25, finally the dustproof cover 4 is buckled on the shell cover 3 after the matched internal opening pull rope is installed, and when the lock body is installed, the sealing soft cushion 26 is placed between the lock body 1 and the shell cover 3 and connected with a vehicle door to fill gaps, so that dust is reduced.

When in specific use:

one, outward opening door function

The outward opening function is realized by connecting the outer handle assembly of the vehicle door and an outward opening rocker arm on the lock body through a pull rope. When the outer handle of the vehicle door is pulled by external force, the outer handle is pulled by a zipper to drive an outer opening rocker arm 41 to rotate around a pawl shaft, the outer opening rocker arm 41 has a structure with two steps, the lower horizontal part of the outer opening rocker arm is sleeved on the pawl shaft, the higher horizontal part is just attached and abutted with an L-shaped notch with the right side surface of an opening rocker arm 40 inwards sunken (a contact surface 1), the outer opening rocker arm 4 pushes the opening rocker arm 40 to rotate when rotating, the opening rocker arm 40 rotates to drive one end of a locking push rod 39 clamped in the U-shaped notch to rotate (a contact surface 2), the lower end part of one end of the locking push rod 39 protrudes below the opening rocker arm 40 (a contact surface 3) and abuts against a first protrusion extending upwards from the pawl 6, so that the locking push rod 39 rotates to push the pawl 6 to rotate around the pawl shaft to give way to the ratchet wheel 5, the ratchet wheel rotates, and the latch wheel enables the latch wheel to be disengaged from, so that the door can be opened. When the external handle assembly of the vehicle door is loosened, the external opening rocker arm and the opening rocker arm automatically return under the action of the external opening return spring.

Two, external locking and unlocking functions

The external locking and unlocking functions are realized by connecting the vehicle door lock core assembly and an external locking rocker arm on the lock body through a pull rod. When the plug assembly is turned by a key, the pull rod on it drives the outer locking rocker arm 28 to rotate around the outer locking rocker shaft 17, thereby driving the locking linkage block 27 to rotate through an outer locking rocker arm stop shaft (contact surface 5) riveted on the outer locking rocker arm, the locking linkage block 27 is sleeved on a fixed shaft vertically extending upwards on the lock body, a clamping groove (contact surface 6) capable of being inserted into the other end of the locking push rod is downwards arranged on the locking linkage block 27, in addition, as shown in fig. 5, the locking device is connected with the locking push rod 39, the two ends of the locking push rod 39 are arranged to be in a horizontal state, when the locking linkage block 27 rotates, the locking push rod is pushed to slide back and forth along the plane where the locking push rod is positioned, when the locking push rod is far away from the U-shaped notch of the opening rocker arm, the contact surface 3 is separated, the ratchet wheel and the pawl 6 do not interfere with each other, so that the outward opening rocker arm cannot drive the pawl ratchet wheel to rotate, and the purpose of locking is achieved; when the U-shaped notch of the opening rocker arm is close to, the opening rocker arm and the pawl are mutually abutted, so that the outward opening rocker arm can drive the pawl ratchet wheel to rotate, and the purpose of unlocking is achieved.

Third, the function of the inward opening door

The function of the inward opening door is realized by connecting the handle assembly in the vehicle door with an inward opening linkage arm on the lock body through a pull rope. When the inner handle of the car door is pulled by external force, the inner handle is pulled by a pull rope to drive the inner linkage arm 33 to rotate around the inner rocker shaft, the other end of the inner linkage arm 33 downwards abuts against a second protrusion (contact surface 7) extending upwards from the opening rocker arm from the left side, so that the opening rocker arm 40 is pushed to rotate, the opening rocker arm 40 rotates to drive one end of the locking push rod 39 clamped in the U-shaped notch of the opening rocker arm to rotate (contact surface 2), the lower end part of one end of the locking push rod 39 protrudes below the opening rocker arm 40 (contact surface 3) and abuts against a first protrusion extending upwards of the pawl 6, so that the locking push rod 39 rotates to push the pawl 6 to rotate around the pawl shaft to give way to the ratchet wheel 5, and the ratchet wheel rotates, so that the lock catch clamped in the opening of the ratchet wheel lock catch is. When the handle assembly in the vehicle door is loosened, the inward opening rocker arm and the opening rocker arm automatically return under the action of the inward opening return spring.

Fourth, electric locking and unlocking function

The motor 20 is electrified in the positive direction, the worm 19 on the motor shaft rotates, the gear sub-assembly 21 meshed with the worm 19 rotates, the pointer bulge structure on the gear sub-assembly 21 is meshed with the corresponding pointer groove of the locking linkage block 27 to drive the locking linkage block 27 to rotate, the locking linkage block 27 drives the locking push rod 39 to do linear motion, the contact surface 3 is separated from the pawl 6, and meanwhile, the inner locking linkage arm 29 is driven to rotate around the inner locking rocker arm shaft 35, so that the function of electric locking and unlocking is achieved.

The motor 20 is electrified reversely, the worm 19 on the motor shaft rotates, the gear sub-assembly 21 meshed with the worm 19 rotates, the pointer bulge structure on the gear sub-assembly 21 is meshed with the corresponding pointer groove of the locking linkage block 27 to drive the locking linkage block 27 to rotate, the locking linkage block 27 drives the locking push rod 39 to do linear motion, the locking push rod 39 is enabled to be combined with the pawl 6 to generate the contact surface 3, and meanwhile, the inner locking linkage arm 29 is driven to rotate around the inner locking rocker shaft 35, so that the function of electric locking and locking is achieved.

Five, two functions of drawing

The double-pull function is realized by connecting the assembly in the vehicle body with an internal locking linkage arm on the lock body. When the door lock is in a locking state, the inner handle is pulled for the first time, the inner linkage arm 33 is pulled through the inner opening pull rope to rotate around the inner opening rocker shaft 31, so that the inner opening linkage arm 33 pushes the opening rocker arm 40, the opening rocker arm 40 drives the locking push rod 39 to rotate around the pawl shaft and move to the end surface of the pawl, when the inner opening linkage arm 33 moves for a little stroke 1 and contacts with the inner locking linkage arm 29 (generates a contact surface 9), the inner locking linkage arm 29 is driven to rotate around the inner locking rocker shaft 35, the inner locking linkage arm 29 drives the locking linkage block 27 to rotate, the locking linkage block 27 drives the locking push rod 39 to do linear motion, the locking push rod 39 moves to the end surface of the pawl, so that the contact 8 cannot be generated by the linear motion, when the inner opening linkage arm 33 drives the inner locking linkage arm 29 to the limiting surface 1, the inner locking linkage arm 29 is in an unlocking position, and after the inner handle is released, the inner opening linkage arm 33 returns through the inner, the opening rocker arm 40 is reset through the outward opening return spring 9, the opening rocker arm 40 drives the locking push rod 39 to return to the locking position, at the moment, the locking push rod 39 is driven by the locking linkage button spring 11 to the unlocking position, and when the inner handle is pulled for the second time, the door lock can be normally opened. The double-pull function is realized.

Six, inside opening function + inside locking function

The internal opening function and the internal locking function are realized by connecting the internal handle assembly of the vehicle body with the internal locking linkage arm and the internal locking linkage arm on the lock body. The door lock is in a locking state, an inner handle is required to be stirred to be provided with an inner locking button, the button is connected with an inner locking linkage arm 29 on the lock body through a pull rope to realize unlocking (the locking linkage arm 29 rotates around an inner locking rocker shaft 35, the inner locking linkage arm 29 drives a locking linkage block 27 to rotate, the locking linkage block 27 drives a locking push rod 39 to do linear motion, and the locking push rod 39 moves to the end face of a pawl to cause that the locking push rod 39 cannot do linear motion to generate contact 8). When the inner handle of the car door is pulled by external force, the inner linkage arm 33 is driven by a pull rope to rotate around the inner rocker shaft, the other end of the inner linkage arm 33 downwards abuts against a second protrusion (contact surface 7) extending upwards from the opening rocker arm from the left side, so that the opening rocker arm 40 is pushed to rotate, the opening rocker arm 40 rotates to drive one end of a locking push rod 39 clamped in a U-shaped notch of the opening rocker arm to rotate (contact surface 2), the lower end part of one end of the locking push rod 39 protrudes out of the lower part (contact surface 3) of the opening rocker arm 40 and abuts against a first protrusion extending upwards of a pawl 6, so that the locking push rod 39 rotates to push the pawl 6 to rotate around a pawl shaft to give way to a ratchet wheel 5, the ratchet wheel rotates, a lock catch clamped in an opening of the ratchet wheel lock catch is separated from. When the inner handle assembly of the vehicle door is loosened, the inner opening rocker arm and the opening rocker arm automatically return to the original position under the action of the inner opening return spring

Seventh, function of preventing false locking

The anti-mislocking function means that the door cannot be locked when the door is opened, and the locking function is disabled when the door is opened. When the ratchet wheel 5 is in the full-open position and the locking push rod 39 is in the unlocking position, the ratchet wheel signal rocker arm 42 is assembled in the limiting surface 3 of the ratchet wheel 5 (as shown in fig. 6), and the locking linkage block 27 cannot be driven to rotate no matter the outer locking rocker arm 28 or the inner locking linkage arm 29, and the limiting surface 2 of the ratchet wheel signal rocker arm 42 blocks the rotation of the locking linkage block 27, so that the function of preventing false locking is realized.

The above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, but not intended to limit the scope of the present invention, and all equivalent technical solutions also belong to the scope of the present invention, and the scope of the present invention should be defined by the claims.