Forced unlocking electric door lock with two-stage transmission

Abstract

The invention discloses a forcibly-opened electric door lock with two-stage transmission. The forcibly-opened electric door lock comprises a shell; the electric secondary transmission assembly is arranged on the shell and used for sending unlocking and locking signals to an automobile control system; the pawl and ratchet wheel assembly is arranged on the shell, when the pawl and ratchet wheel assembly is separated, the door lock is in an unlocking state, and when the pawl and ratchet wheel assembly is meshed, the door lock is in a locking state; the forcible opening assembly is arranged on the shell, the part of the forcible opening assembly is connected with the electric secondary transmission assembly, and when the electric secondary transmission assembly sends an unlocking signal to an automobile control system, the forcible opening assembly is pulled, the pawl and ratchet wheel assembly is linked to act, and a door lock is opened; the outward-opening linkage assembly is arranged on the shell, is arranged on one side of the electric secondary transmission assembly and is used for being in linkage with the pawl and ratchet wheel assembly to act so as to open the door lock; therefore, the technical problems of function failure and potential safety hazards caused by relatively complex structure and unsmooth transmission are solved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, in particular to a forced-opening electric door lock with two-stage transmission. Background Art

[0002] Auto parts are the cornerstone of the automotive industry. They are complex in structure and diverse in function. They can be divided into multiple categories according to their systems and functions. The vehicle body, serving as the foundation for all parts, is divided into the body frame and body panels. Components welded to the frame, such as the roof and rear fenders, are structural parts, while front and rear bumpers, doors, and other components are body panels. The powertrain, comprised of the engine and transmission, is known as the car's "heart" and "nervous system," responsible for power output and transmission control. The chassis system includes the front and rear subframes, suspension, drive shaft, and braking system. The subframe, as a key load-bearing component, cushions collision forces and enhances driving stability. Electrical instruments, sensors, and safety devices (such as airbags and seatbelts) are also essential components, collectively ensuring the vehicle's overall performance. Among them, there are usually door locks on the car doors. Traditional door locks have relatively complex structures. When opening or closing the car doors, they are prone to transmission problems, resulting in functional failure and safety hazards. Summary of the Invention

[0003] In view of the above-mentioned deficiencies in the related art, the purpose is to provide a forced-open electric door lock with a two-stage transmission to solve the technical problems in the related art such as relatively complex structure, unsmooth transmission, resulting in functional failure and potential safety hazards; The technical solution to achieve the purpose is: a forced opening electric door lock with two-stage transmission, comprising: case; an electric secondary transmission assembly, disposed on the housing, for sending unlocking and locking signals to the vehicle control system; a pawl and ratchet assembly, disposed on the housing; when the pawl and ratchet assembly is separated, the door lock is in an unlocked state; and when the pawl and ratchet assembly is engaged, the door lock is in a locked state; A forced opening assembly is provided on the housing, and a portion of the forced opening assembly is connected to the electric secondary transmission assembly. When the electric secondary transmission assembly sends an unlocking signal to the vehicle control system, the forced opening assembly is pulled, and the pawl and ratchet assembly is linked to operate to open the door lock; And an outward opening linkage assembly is arranged on the housing and on one side of the electric secondary transmission assembly, and is used to link the pawl ratchet assembly to open the door lock.

[0004] Furthermore: the housing comprises: a main housing, on one side of which the electric secondary transmission assembly is arranged, and on the other side of which a part of the pawl ratchet assembly is arranged; A side support housing is connected to the top of the main housing, is vertically arranged with the main housing, and is connected to the electric secondary transmission assembly and the forced opening assembly together with the main housing; a cover body connected to the main housing, covering the main housing and the side support housing, and forming an installation space between the main housing and the side support housing, wherein the electric secondary transmission assembly, the forced opening assembly and the outward opening linkage assembly are arranged in the installation space; and a cover plate connected to the bottom of the main housing to cover the pawl ratchet assembly.

[0005] Further: the electric secondary transmission assembly includes: a motor connected to the main housing; a worm connected to the transmission shaft of the motor; a worm wheel movably connected to the main housing and meshing with the worm; a first torsion spring, disposed on the worm gear and the main housing; a locking linkage arm, movably connected to the main housing and meshing with the worm gear; A locking push rod, one end of which is engaged with the locking linkage arm and the other end of which is away from the locking linkage arm; a second torsion spring, provided on the locking linkage arm and the locking push rod; and a circuit switch, which is arranged on the main housing and is used for contacting or separating with the locking linkage arm.

[0006] Furthermore: the circuit switch includes: a conductive plate with secondary plastic coating, electrically connected to the motor; a first micro switch, electrically connected to the conductive plate through the secondary plastic coating, and configured to engage or disengage with the locking linkage arm; a second micro switch, electrically connected to the conductive plate through the secondary overmolding process, and configured to engage or disengage the pawl and ratchet assembly; and a third micro switch electrically connected to the conductive plate through secondary plastic coating.

[0007] Furthermore: it also includes: an external unlocking rocker arm, which is movably connected to the main housing and is rotated by the worm gear to contact or separate from the third micro switch.

[0008] Further: the pawl ratchet assembly includes: a pawl shaft connected to the main housing; a ratchet shaft connected to the main housing and spaced apart from the pawl shaft; a pawl, disposed on the pawl shaft; a pawl shock-absorbing pad, provided on the main housing and configured to contact one end of the pawl; a pawl return spring, provided on the main housing and used for returning the pawl; a ratchet, disposed on the ratchet shaft and configured to separate from or engage with the pawl; A ratchet return spring, provided on the main housing and used for returning the ratchet; a ratchet signal rocker arm, disposed on the ratchet shaft, rotating together with the ratchet, and configured to contact or separate with the second micro switch; An inner opening linkage arm, one end of which is connected to the pawl shaft and engages with the pawl, and the other end of which contacts the forced opening assembly; and a return spring of the inner-opening linkage arm, which is sleeved on the pawl shaft and arranged between the inner-opening linkage arm and the main housing.

[0009] Furthermore: the forced opening assembly includes: an inner locking rocker arm movably connected to the side support shell, and one end of the inner locking rocker arm is plugged into the locking linkage arm; a shaft sleeve connected to the side support housing; An inwardly opening rocker arm movably connected to the shaft sleeve; An inward-opening rocker arm return spring is sleeved on the shaft sleeve and is arranged between the inward-opening rocker arm and the side support housing; And an inner opening cable is arranged on the side support shell, and one end is connected to the inner opening rocker arm, and the other end protrudes from the side support shell. The inner opening cable is used to link the inner opening rocker arm to rotate with the shaft sleeve as the rotation center, and the inner opening rocker arm pushes the inner opening linkage arm, and the inner opening linkage arm links the pawl to rotate, and the pawl is separated from the ratchet.

[0010] Furthermore: the outward opening linkage assembly includes: an outward opening rocker arm, movably connected to the main housing, with one end protruding from the main housing; an outward-opening linkage arm, one end of which is connected to the outward-opening rocker arm; An opening rocker arm is connected to the pawl shaft and is connected to the other end of the outward-opening linkage arm, and is used to move the pawl; An outward-opening rocker arm return spring is provided between the outward-opening rocker arm and the main housing; an opening rocker arm return spring connected between the opening rocker arm and the main housing; and a connecting piece connected to the main housing and connected to the pawl shaft to block the opening rocker arm.

[0011] Further: it also includes: an outward-opening pull rod joint, connected to one end of the outward-opening rocker arm, and arranged outside the shell.

[0012] The above technical solution has the following beneficial effects: a forced-open electric door lock with two-stage transmission, compared with the related art, is provided with a housing, an electric two-stage transmission assembly, a pawl ratchet assembly, a forced-open assembly and an outward-opening linkage assembly; The electric secondary transmission assembly is used to send unlocking and locking signals to the vehicle control system, and has a secondary transmission electric function; When the electric secondary transmission component sends an unlocking signal to the vehicle control system, it pulls the forced opening component, which in turn activates the pawl and ratchet components to unlock the door, thus achieving a forced opening function. When the electric secondary transmission component sends an unlocking signal to the vehicle control system, the outer opening linkage component is dialed, and the pawl ratchet component is linked to the action to unlock the door, and the outer opening function is achieved; The transmission is relatively smooth, safe and reliable, and the structure is relatively compact and beautiful; This overcomes the technical problems of relatively complex structure, unsmooth transmission, resulting in functional failure and potential safety hazards, and achieves the technical effect of relatively compact structure, relatively smooth transmission, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is one of the top views with the cover removed. At this point, the electric secondary transmission assembly sends an unlocking signal to the vehicle control system; Figure 2 The second top view is to remove the cover. At this time, the electric secondary transmission assembly sends a locking signal to the vehicle control system; Figure 3 It is a structural diagram of a circuit switch; Figure 4 for Figure 1 or Figure 2 Bottom view after removing the cover; Figure 5 It is a combined schematic diagram of the partial structure of the electric secondary transmission assembly, the partial structure of the pawl and ratchet assembly, and the partial structure of the forced opening assembly; Figure 6 It is a schematic diagram of the structure when the pawl and ratchet assembly are engaged; Figure 7 It is a schematic diagram of the structure when the pawl and ratchet assembly is separated; Figure 8 for Figure 1 or Figure 2 Front view of Figure 9 This is the exploded view of the final assembly; In the figure: 10. Housing, 10-1. Main housing, 10-2. Side support housing, 10-3. Cover, 10-4. Cover plate, 10-41. First U-shaped notch, 20. Electric secondary transmission assembly, 20-1. Motor, 20-2. Worm, 20-3. Worm gear, 20-31. Circular shaft segment, 20-4. First torsion spring, 20-5. Locking linkage arm, 20-51. Arc-shaped through groove, 20-52. Arc Groove, 20-6. Locking push rod, 20-61. Columnar protrusion, 20-7. Second torsion spring, 20-8. Circuit switch, 20-81. Conductive plate secondary overmolding, 20-82. First micro switch, 20-83. Second micro switch, 20-84. Third micro switch, 20-9. External unlocking rocker arm, 30. Pawl and ratchet assembly, 30-1. Pawl shaft, 30-2. Ratchet shaft, 30-3. Pawl , 30-4. Ratchet shock absorber, 30-5. Ratchet return spring, 30-6. Ratchet, 30-6-1. Bayonet, 30-61. Ratchet return spring, 30-7. Ratchet signal rocker arm, 30-8. Inner opening linkage arm, 30-9. Inner opening linkage arm return spring, 40. Forced opening assembly, 40-1. Inner locking rocker arm, 40-11. Spherical protrusion, 40-2. Bushing, 40-3. Inner opening rocker arm, 40-4. Inner Opening rocker arm return spring, 40-5. Inner opening cable, 50. Outer opening linkage assembly, 50-1. Outer opening rocker arm, 50-2. Outer opening linkage arm, 50-3. Opening rocker arm, 50-31. Second U-shaped notch, 50-32. Side thrust plate, 50-4. Outer opening rocker arm return spring, 50-5. Opening rocker arm return spring, 50-6. Connecting piece, 60. Outer opening pull rod joint, 70. Sponge sealing strip, 80. Locking shock absorber pad. DETAILED DESCRIPTION

[0014] In order to make the content easier to understand, the following is a further detailed description based on specific embodiments and in conjunction with the accompanying drawings; A forced-open electric door lock with two-stage transmission solves the technical problems of relatively complex structure, unsmooth transmission, resulting in functional failure and potential safety hazards in related technologies. It achieves the positive effects of relatively compact structure, relatively smooth transmission, safety and reliability. The overall concept is as follows: Implementation Method

[0015] like Figure 1 、 Figure 2 、 Figure 4 、 Figure 8 、 Figure 9 As shown; a forced opening electric door lock with two-stage transmission, comprising: Housing 10; An electric secondary transmission assembly 20 , provided on the housing 10 , for sending unlocking and locking signals to the vehicle control system; A pawl and ratchet assembly 30 is provided on the housing 10. When the pawl and ratchet assembly 30 is separated, the door lock is in an unlocked state. When the pawl and ratchet assembly 30 is engaged, the door lock is in a locked state. The forced opening assembly 40 is provided on the housing 10, and a portion of the forced opening assembly 40 is connected to the electric secondary transmission assembly 20. When the electric secondary transmission assembly 20 sends an unlocking signal to the vehicle control system, the forced opening assembly 40 is pulled, and the pawl ratchet assembly 30 is activated to open the door lock. and an outward opening linkage assembly 50, which is provided on the housing 10 and on one side of the electric secondary transmission assembly 20, and is used to link the pawl ratchet assembly 30 to open the door lock; Specifically, during implementation, the electric secondary transmission assembly 20 is used to send unlocking and locking signals to the vehicle control system, and has a secondary transmission electric function; When the electric secondary transmission assembly 20 sends an unlocking signal to the vehicle control system, the forced opening assembly 40 is pulled, and the pawl ratchet assembly 30 is linked to operate to open the door lock, which has a forced opening function; When the electric secondary transmission assembly 20 sends an unlocking signal to the vehicle control system, the outer opening linkage assembly 50 is toggled, and the pawl ratchet assembly 30 is linked to operate, unlocking the door and having the outer opening function; The transmission is relatively smooth, safe and reliable, and the structure is relatively compact and beautiful; Another embodiment: like Figure 1 、 Figure 2 、 Figure 4 、 Figure 8 、 Figure 9 As shown; when implemented, the housing 10 includes: a main housing 10-1, on one side of which the electric secondary transmission assembly 20 is arranged, and on the other side of which a part of the pawl ratchet assembly 30 is arranged; a side support housing 10-2, connected to the top of the main housing 10-1, arranged vertically with the main housing 10-1, and connected together with the main housing 10-1 to the electric secondary transmission assembly 20 and the forced opening assembly 40; a cover body 10-3, connected to the main housing 10-1, covering the main housing 10-1 and the side support housing 10-2, forming an installation space between the main housing 10-1 and the side support housing 10-2, in which the electric secondary transmission assembly 20, the forced opening assembly 40 and the outward opening linkage assembly 50 are arranged; and a cover plate 10-4, connected to the bottom of the main housing 10-1, covering the pawl ratchet assembly 30; The main housing 10-1, the side support housing 10-2 and the cover 10-3 are made of plastic; The side support housing 10-2 is arranged on the top of the main housing 10-1, is arranged perpendicular to the main housing 10-1, and is connected to the cover body 10-3 by screws; The cover 10-3 is connected to the main housing 10-1 by screws; The cover plate 10-4 is made of stainless steel and has a relatively high structural strength. The cover plate 10-4 is connected to the main housing 10-1 by screws, and a first U-shaped notch 10-41 is provided on the cover plate 10-4. The first U-shaped notch 10-41 facilitates the lock catch on the vehicle body to be inserted between the pawl 30-3 and the ratchet 30-6, thereby achieving locking between the two-stage transmission forced-open electric door lock and the vehicle body. The separate arrangement of the main housing 10-1, the side support housing 10-2, the cover 10-3 and the cover plate 10-4 makes assembly relatively convenient and flexible when assembling other components; Another embodiment: like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 As shown; when implemented, the electric secondary transmission assembly 20 includes: a motor 20-1, connected to the main housing 10-1; a worm 20-2, connected to the transmission shaft of the motor 20-1; a worm wheel 20-3, movably connected to the main housing 10-1 and meshing with the worm 20-2; a first torsion spring 20-4, provided on the worm wheel 20-3 and the main housing 10-1; a locking linkage arm 20-5, movably connected to the main housing 10-1 and meshing with the worm wheel 20-3; a locking push rod 20-6, one end of which is clamped with the locking linkage arm 20-5 and the other end is away from the locking linkage arm 20-5; a second torsion spring 20-7, provided on the locking linkage arm 20-5 and the locking push rod 20-6; and a circuit switch 20-8, provided on the main housing 10-1, for contacting or separating with the locking linkage arm 20-5; The motor 20-1 is a common structure in the prior art, which is clamped on the main housing 10-1 and is used to generate a rotational driving force; The worm 20-2 is connected to the transmission shaft of the motor 20-1 and is used to rotate the worm wheel 20-3; The worm gear 20-3 is movably connected to the main housing 10-1. For example, the circular shaft section 20-31 on one end of the worm gear 20-3 is plugged into the main housing 10-1, and the worm gear 20-3 rotates around the circular shaft section 20-31 as the rotation center. The first torsion spring 20 - 4 is a common structure in the prior art, which is used to form a buffer, facilitating the worm wheel 20 - 3 to rotate in conjunction with the worm 20 - 2 ; The locking linkage arm 20-5 is movably connected to the main housing 10-1. For example, the locking linkage arm 20-5 is plugged into the cylindrical protrusion on the main housing 10-1 through a through hole. The locking linkage arm 20-5 rotates with the cylindrical protrusion as the rotation center and is linked to the worm gear 20-3. The locking push rod 20-6 is a bent structure, with a cylindrical protrusion 20-61 on one end engaging with the arc-shaped through groove 20-51 on the locking linkage arm 20-5, and the other end engaging with the second U-shaped notch 50-31 on the opening rocker arm 50-3; Among them, the second torsion spring 20-7 is a common structure in the prior art, which is used to form a buffer, which is conducive to the locking linkage arm 20-5 linking the locking push rod 20-6; The circuit switch 20-8 includes: a conductive plate secondary coating 20-81, electrically connected to the motor 20-1; a first micro switch 20-82, electrically connected to the conductive plate secondary coating 20-81, for contacting or separating with the locking linkage arm 20-5; a second micro switch 20-83, electrically connected to the conductive plate secondary coating 20-81, for contacting or separating with the pawl ratchet assembly 30; and a third micro switch 20-84, electrically connected to the conductive plate secondary coating 20-81. The circuit switch 20-8 is a common structure in the prior art; Conductive plate secondary coating 20-81 is a technology that coats the surface of conductive plate with a layer of insulating or functional plastic through injection molding or dipping process, which improves the insulation, corrosion resistance or mechanical strength of the conductive plate and is conducive to conductivity; A first micro switch 20-82 is provided. When the locking linkage arm 20-5 contacts the first micro switch 20-82, an unlocking signal is sent to the vehicle control system. When the locking linkage arm 20-5 does not contact the first micro switch 20-82, a locking signal is sent to the vehicle control system. A second micro switch 20-83 is provided. When the ratchet signal rocker arm 30-7 contacts the second micro switch 20-83, a signal that the door lock is not closed is sent to the vehicle control system. When the ratchet signal rocker arm 30-7 does not contact the second micro switch 20-83, a signal that the door lock is closed is sent to the vehicle control system. The invention also includes: an external unlocking rocker arm 20-9, which is movably connected to the main housing 10-1 and is rotated in conjunction with the worm gear 20-3 to contact or separate with the third micro switch 20-84; When the outer unlocking rocker arm 20-9 is not in contact with the third micro switch 20-84, an unlocking signal is sent to the vehicle control system; when the outer unlocking rocker arm 20-9 is in contact with the third micro switch 20-84, a locking signal is sent to the vehicle control system; The external unlocking rocker arm 20-9 and the third micro switch 20-84 are provided, which play a role of double protection, improve the probability of the vehicle control system receiving the signal, and are relatively safe. For example, when the first micro switch 20-82 is damaged, the third micro switch 20-84 can also send a signal to realize the secondary transmission electric function; Two-stage transmission electric function: the motor 20-1 links the worm 20-2 to rotate, the worm 20-2 links the worm wheel 20-3 to rotate, the worm wheel 20-3 links the locking linkage arm 20-5 to rotate (through the transmission between the worm 20-2, the worm wheel 20-3 and the locking linkage arm 20-5, it is a two-stage transmission), the locking linkage arm 20-5 links the locking push rod 20-6 to move, when the locking linkage arm 20-5 contacts the first micro switch 20-82, it sends an unlocking signal to the vehicle control system, at this time, the inner opening rocker arm 40-3 is released by the inner locking rocker arm 40-1 and can rotate, and the opening rocker arm 50-3 is also released and can rotate; Another embodiment: like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9As shown; when implemented, the pawl ratchet assembly 30 includes: a pawl shaft 30-1, connected to the main housing 10-1; a ratchet shaft 30-2, connected to the main housing 10-1, and spaced apart from the pawl shaft 30-1; a pawl 30-3, arranged on the pawl shaft 30-1; a pawl shock-absorbing pad 30-4, arranged on the main housing 10-1, for contacting one end of the pawl 30-3; a pawl return spring 30-5, arranged on the main housing 10-1, for returning the pawl 30-3; a ratchet 30-6, arranged on the ratchet shaft 30-2, for separating from the pawl 30-3 or engaged; a ratchet return spring 30-61, provided on the main housing 10-1, for returning the ratchet 30-6; a ratchet signal rocker arm 30-7, provided on the ratchet shaft 30-2, rotating together with the ratchet 30-6, for contacting or separating with the second micro switch 20-83; an inner opening linkage arm 30-8, one end of which is connected to the pawl shaft 30-1 and engaged with the pawl 30-3, and the other end of which is in contact with the forced opening assembly 40; and an inner opening linkage arm return spring 30-9, sleeved on the pawl shaft 30-1, provided between the inner opening linkage arm 30-8 and the main housing 10-1; The pawl shaft 30-1 is a stepped shaft, which is plugged into the main housing 10-1 and is relatively easy to assemble. The ratchet shaft 30-2 is a stepped shaft, which is plugged into the main housing 10-1 and is relatively easy to assemble. The pawl 30 - 3 can rotate with the pawl shaft 30 - 1 as the rotation center; The pawl shock-absorbing pad 30-4 is made of rubber and is stuck in the main housing 10-1 to prevent the pawl 30-3 from directly colliding with the main housing 10-1, thereby protecting the pawl 30-3 and the main housing 10-1 and reducing noise. The pawl return spring 30 - 5 is a common structure in the prior art, such as a torsion spring, which is used to generate a torsion force to facilitate the return of the pawl 30 - 3 ; The ratchet 30-6 can rotate with the ratchet shaft 30-2 as the rotation center, and the ratchet 30-6 has a bayonet 30-6-1, which is used to clamp the pawl 30-3; The ratchet return spring 30-61 is a common structure in the prior art, such as a torsion spring, which is used to generate torque to facilitate the return of the ratchet 30-6; The ratchet signal rocker arm 30-7 is used to contact or separate with the second micro switch 20-83; The inner opening linkage arm 30-8 is formed by bending a plate, is used to link the pawl 30-3 to rotate, and is pushed by the inner opening rocker arm 40-3; The inner opening linkage arm return spring 30-9 is a common structure in the prior art, such as a torsion spring, which is used to generate a torsion force to facilitate the return of the inner opening linkage arm 30-8; Another embodiment: like Figure 1 、 Figure 2 、 Figure 5 、 Figure 8 、 Figure 9 As shown; when implemented, the forced opening assembly 40 includes: an inner locking rocker arm 40-1, which is movably connected to the side support shell 10-2, and one end of the inner locking rocker arm 40-1 is plugged into the locking linkage arm 20-5; a sleeve 40-2, which is connected to the side support shell 10-2; an inner opening rocker arm 40-3, which is movably connected to the sleeve 40-2; an inner opening rocker arm return spring 40-4, which is sleeved on the sleeve 40-2 and is provided between the inner opening rocker arm 40-3 and the side support shell 10-2 and an inner opening cable 40-5, which is provided on the side support housing 10-2 and has one end connected to the inner opening rocker arm 40-3 and the other end protruding from the side support housing 10-2. The inner opening cable 40-5 is used to link the inner opening rocker arm 40-3 to rotate with the shaft sleeve 40-2 as the rotation center. The inner opening rocker arm 40-3 pushes the inner opening linkage arm 30-8, and the inner opening linkage arm 30-8 links the pawl 30-3 to rotate, and the pawl 30-3 is separated from the ratchet 30-6. The inner locking rocker arm 40-1 is movably connected to the side support housing 10-2. For example, the inner locking rocker arm 40-1 is plugged into a cylindrical protrusion on the side support housing 10-2 through a through hole. The inner locking rocker arm 40-1 can rotate with the cylindrical protrusion as the rotation center and be linked to the locking linkage arm 20-5. A spherical protrusion 40-11 is provided on one end of the inner locking rocker arm 40-1. The spherical protrusion 40-11 engages with the arc-shaped groove 20-52 on the locking linkage arm 20-5, thereby realizing the inner locking rocker arm 40-1 being rotated in conjunction with the locking linkage arm 20-5, thereby releasing the inner locking rocker arm 40-1 or limiting the inner opening rocker arm 40-3. The shaft sleeve 40-2 has a T-shaped structure and is plugged into the side support housing 10-2. The inner opening rocker arm 40-3 is a hook-shaped structure, which is sleeved on the shaft sleeve 40-2 through a through hole and can rotate with the shaft sleeve 40-2 as the rotation center; The inner opening rocker arm return spring 40 - 4 is a common structure in the prior art, such as a torsion spring, which is helpful for positioning the inner opening rocker arm 40 - 3 and for returning the inner opening rocker arm 40 - 3 after rotation. The inner opening cable 40-5 is a common structure in the prior art, usually consisting of an outer protective cover and an inner steel wire. One end of the steel wire is connected to the inner opening rocker arm 40-3 for linkage rotation of the inner opening rocker arm 40-3. Forced opening function: When the electric secondary transmission assembly 20 sends an unlocking signal to the vehicle control system, the locking rocker arm 40-1 is linked to the locking linkage arm 20-5, releasing the inner opening rocker arm 40-3, pulling the inner opening cable 40-5, and the inner opening cable 40-5 links the inner opening rocker arm 40-3 to rotate. The inner opening rocker arm 40-3 moves the inner opening linkage arm 30-8, and the inner opening linkage arm 30-8 links the pawl 30-3 to rotate. The pawl 30-3 releases the ratchet 30-6, and the ratchet 30-6 rotates under the action of the ratchet return spring 30-61, thereby unlocking the door lock. Another embodiment: like Figure 1 、 Figure 2 、 Figure 5 、 Figure 9 As shown; when implemented, the outward-opening linkage assembly 50 includes: an outward-opening rocker arm 50-1, movably connected to the main housing 10-1, one end of which protrudes from the main housing 10-1; an outward-opening linkage arm 50-2, one end of which is connected to the outward-opening rocker arm 50-1; an opening rocker arm 50-3, connected to the pawl shaft 30-1 and connected to the other end of the outward-opening linkage arm 50-2, for toggling the pawl 30-3; an outward-opening rocker arm return spring 50-4, provided between the outward-opening rocker arm 50-1 and the main housing 10-1; an opening rocker arm return spring 50-5, connected between the opening rocker arm 50-3 and the main housing 10-1; and a connecting member 50-6, connected to the main housing 10-1 and connected to the pawl shaft 30-1, blocking the opening rocker arm 50-3; The outward-opening rocker arm 50-1 is in an L-shaped structure and is plugged into the cylindrical protrusion on the main housing 10-1 through a through hole. The outward-opening rocker arm 50-1 rotates around the cylindrical protrusion. The outward opening linkage arm 50-2 is formed by bending a plate, one end of which is movably connected (e.g., riveted) to the outward opening rocker arm 50-1, and the other end of which is movably connected (e.g., riveted) to the opening rocker arm 50-3, thereby facilitating the rotation of the outward opening rocker arm 50-1 in conjunction with the opening rocker arm 50-3. The opening rocker arm 50-3 has a second U-shaped notch 50-31. The volume of the second U-shaped notch 50-31 near the bottom of the "U" shape is larger than the volume of the locking push rod 20-6, so that when the locking push rod 20-6 is at the bottom of the "U" shape (that is, the locking push rod 20-6 is in the unlocked state, as shown in FIG. Figure 1 Position), the opening rocker arm 50-3 can rotate normally, and the opening rocker arm 50-3 has a side push plate 50-32. When the opening rocker arm 50-3 rotates, the side push plate 50-32 can push the ratchet 30-3 to rotate; Among them, the outward-opening rocker arm return spring 50-4 is a common structure in the prior art, such as a torsion spring, which is conducive to the return of the outward-opening rocker arm 50-1; Among them, the opening rocker arm return spring 50-5 is a common structure in the prior art, such as a torsion spring, which is conducive to the return of the opening rocker arm 50-3; The connecting piece 50-6 is formed by stamping a plate, forming a barrier and improving the reliability of the structure; Outward opening function: the outward opening rocker arm 50-1 is toggled, and the outward opening rocker arm 50-1 is linked to the outward opening linkage arm 50-2, and the outward opening linkage arm 50-2 is linked to the opening rocker arm 50-3 to rotate, and the side push plate 50-32 on the opening rocker arm 50-3 pushes the pawl 30-3 to rotate, and the pawl 30-3 releases the ratchet 30-6, and the ratchet 30-6 rotates under the action of the ratchet return spring 30-61, thereby realizing the door lock; Another embodiment: like Figure 1 、 Figure 2 、 Figure 9 When implemented, it also includes: an outward-opening tie rod joint 60, connected to one end of the outward-opening rocker arm 50-1, and disposed outside the housing 10; The outward opening pull rod joint 60 is made of plastic and wrapped around one end of the outward opening rocker arm 50 - 1 , which is convenient for moving the outward opening rocker arm 50 - 1 without scratching the hands and is relatively beautiful. Another embodiment: like Figure 9 When implemented, it also includes: a sponge sealing strip 70, the sponge sealing strip 70 is cushioned at the edge of the main housing 10-1, surrounding the cover plate 10-4, and spaced apart from the cover plate 10-4, which improves the sealing when the door lock is connected to the door; Another embodiment: like Figure 9 As shown; during implementation, a lock shock-absorbing pad 80 is provided on the main housing 10-1. The lock shock-absorbing pad 80 has a roughly "F"-shaped shape. The lock shock-absorbing pad 80 is stuck in the groove on the main housing 10-1 and is placed between the ratchet 30-6 and the main housing 10-1. It plays a role in supporting the ratchet 30-6 and has a shock-absorbing effect to prevent vibration when the ratchet 30-6 rotates. In the description, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the positional relationships shown in the drawings and are only used to facilitate or simplify the description, and do not indicate specific directions that must be maintained. The operating procedures described in the embodiments are not absolute steps for use and may be adjusted accordingly in actual use. Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meanings understood by persons of ordinary skill in the relevant art. The terms "first," "second," and similar words used in the specification and claims do not denote any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "an" and similar words do not necessarily indicate a limit on quantity, but rather indicate the presence of at least one, which shall be determined based on the content of the embodiments. The above is only a preferred specific implementation method, but the scope of protection is not limited to this. Any equivalent replacement or change within the technical scope disclosed by technicians familiar with this technical field based on the technical solution and its inventive concept should be covered by the scope of protection.

Claims

1. A forced-open electric door lock with two-stage transmission, characterized in that: include: case; an electric secondary transmission assembly, disposed on the housing, for sending unlocking and locking signals to the vehicle control system; a pawl and ratchet assembly, disposed on the housing; when the pawl and ratchet assembly is separated, the door lock is in an unlocked state; and when the pawl and ratchet assembly is engaged, the door lock is in a locked state; A forced opening assembly is provided on the housing, and a portion of the forced opening assembly is connected to the electric secondary transmission assembly. When the electric secondary transmission assembly sends an unlocking signal to the vehicle control system, the forced opening assembly is pulled, and the pawl and ratchet assembly is linked to operate to open the door lock; And an outward opening linkage assembly is arranged on the housing and on one side of the electric secondary transmission assembly, and is used to link the pawl and ratchet assembly to open the door lock.

2. The forced-open electric door lock with two-stage transmission according to claim 1, characterized in that: The housing comprises: a main housing, on one side of which the electric secondary transmission assembly is arranged, and on the other side of which a part of the pawl and ratchet assembly is arranged; A side support housing is connected to the top of the main housing, is vertically arranged with the main housing, and is connected to the electric secondary transmission assembly and the forced opening assembly together with the main housing; a cover body connected to the main housing, covering the main housing and the side support housing, and forming an installation space between the main housing and the side support housing, wherein the electric secondary transmission assembly, the forced opening assembly and the outward opening linkage assembly are arranged in the installation space; and a cover plate connected to the bottom of the main housing to cover the pawl and ratchet assembly.

3. The forced-open electric door lock with two-stage transmission according to claim 2, characterized in that: The electric secondary transmission assembly includes: a motor connected to the main housing; a worm connected to the transmission shaft of the motor; a worm wheel movably connected to the main housing and meshing with the worm; a first torsion spring, disposed on the worm gear and the main housing; a locking linkage arm, movably connected to the main housing and meshing with the worm gear; A locking push rod, one end of which is engaged with the locking linkage arm and the other end of which is away from the locking linkage arm; a second torsion spring, provided on the locking linkage arm and the locking push rod; and a circuit switch, which is arranged on the main housing and is used for contacting or separating with the locking linkage arm.

4. The forced-open electric door lock with two-stage transmission according to claim 3, characterized in that: The circuit switch comprises: a conductive plate with secondary plastic coating, electrically connected to the motor; a first micro switch, electrically connected to the conductive plate through the secondary plastic coating, and configured to engage or disengage with the locking linkage arm; A second micro switch is electrically connected to the conductive plate through the secondary overmolding process and is used to engage or disengage the pawl and ratchet assembly; and a third micro switch electrically connected to the conductive plate through secondary plastic coating.

5. The forced-open electric door lock with two-stage transmission according to claim 4, characterized in that: Also includes: The external unlocking rocker arm is movably connected to the main housing and is rotated in conjunction with the worm gear to contact or separate from the third micro switch.

6. The forced-open electric door lock with two-stage transmission according to claim 4, characterized in that: The pawl ratchet assembly includes: a pawl shaft connected to the main housing; a ratchet shaft connected to the main housing and spaced apart from the pawl shaft; a pawl, disposed on the pawl shaft; a pawl shock-absorbing pad, provided on the main housing and configured to contact one end of the pawl; a pawl return spring, provided on the main housing and used for returning the pawl; a ratchet, disposed on the ratchet shaft and configured to separate from or engage with the pawl; A ratchet return spring, provided on the main housing and used for returning the ratchet; a ratchet signal rocker arm, disposed on the ratchet shaft, rotating together with the ratchet, and configured to contact or separate with the second micro switch; An inner opening linkage arm, one end of which is connected to the pawl shaft and engages with the pawl, and the other end of which contacts the forced opening assembly; and a return spring of the inner-opening linkage arm, which is sleeved on the pawl shaft and arranged between the inner-opening linkage arm and the main housing.

7. The forced-open electric door lock with two-stage transmission according to claim 6, characterized in that: The forced opening assembly includes: an inner locking rocker arm movably connected to the side support housing, and one end of the inner locking rocker arm is plugged into the locking linkage arm; a shaft sleeve connected to the side support housing; An inwardly opening rocker arm movably connected to the shaft sleeve; An inward-opening rocker arm return spring is sleeved on the shaft sleeve and is arranged between the inward-opening rocker arm and the side support housing; And an inner opening cable is arranged on the side support shell, and one end is connected to the inner opening rocker arm, and the other end protrudes from the side support shell. The inner opening cable is used to link the inner opening rocker arm to rotate with the shaft sleeve as the rotation center, and the inner opening rocker arm pushes the inner opening linkage arm, and the inner opening linkage arm links the pawl to rotate, and the pawl is separated from the ratchet.

8. The forced-open electric door lock with two-stage transmission according to claim 7, characterized in that: The outward opening linkage assembly includes: an outward opening rocker arm movably connected to the main housing, with one end protruding from the main housing; an outward-opening linkage arm, one end of which is connected to the outward-opening rocker arm; An opening rocker arm is connected to the pawl shaft and is connected to the other end of the outward-opening linkage arm, and is used to move the pawl; An outward-opening rocker arm return spring is provided between the outward-opening rocker arm and the main housing; an opening rocker arm return spring connected between the opening rocker arm and the main housing; and a connecting piece connected to the main housing and connected to the pawl shaft to block the opening rocker arm.

9. The forced-open electric door lock with two-stage transmission according to claim 8, characterized in that: Also includes: An outward-opening pull rod joint is connected to one end of the outward-opening rocker arm and is arranged outside the shell.

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