Novel sliding door lock system for motor vehicle

Abstract

The utility model discloses a novel sliding door lock system for a motor vehicle. The novel sliding door lock system comprises a rear lock assembly, a front lock assembly and a full-open limiting lock assembly. The outward opening inhaul cable is connected with the rear lock assembly and the sliding door outward opening handle; the inward opening inhaul cable is connected with the rear lock assembly and the vehicle door trim; the front lock inhaul cable is connected with the rear lock assembly and the front lock assembly; and the full-open limiting lock inhaul cable is connected with the rear lock assembly and the full-open limiting lock assembly. According to the sliding door lock system, the rear lock assembly is operated in a full electric control mode, the front lock assembly and the full-open limiting lock assembly are directly operated through the rear lock to conduct unlocking, and a transfer executing mechanism in a traditional sliding door lock system is omitted. As a mechanical backup, the rear lock assembly can be directly operated by the inward opening inhaul cable to perform mechanical double-pull unlocking under the condition of power failure of the whole vehicle or emergency, and the man-machine operation of the inward opening inhaul cable adopts a pull ring or hidden inner buckle mode.

Description

Technical Field

[0001] This utility model relates to the field of sliding door lock technology, and in particular to a novel sliding door lock system for motor vehicles. Background Technology

[0002] In recent years, my country's MPV (Multi-Purpose Vehicle) market has shown strong growth, mainly due to the rise of new energy vehicles, especially the development of MPV electrification. This fully reflects the fierce competition in the automotive industry and the rapid changes in consumer preferences. However, the design and technology of current automotive sliding door lock systems still mainly use traditional mechanical door locks. These traditional sliding door lock systems have many drawbacks: for example, the linkage transmission is complex, resulting in less smooth operation; the transfer mechanism is bulky, increasing the overall weight of the system; the cable layout is cumbersome, affecting not only the reliability of the system but also increasing the difficulty of installation and maintenance; the degree of electrification is low, failing to meet the increasing demands for intelligence and convenience in the automotive industry; and the large number of parts not only increases manufacturing costs but also reduces the reliability of the system. Utility Model Content

[0003] The purpose of this invention is to solve the problems of complex linkage transmission, bulky transfer mechanism, cumbersome cable arrangement, low degree of electrification and large number of parts in existing sliding door locks, and to propose a new sliding door lock system for motor vehicles.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A novel sliding door lock system for motor vehicles includes a rear lock assembly, a front lock assembly, and a fully open limit lock assembly;

[0006] Also includes:

[0007] An outward-opening cable connects the rear lock assembly to the outward-opening handle of the sliding door.

[0008] An inward-opening cable connects the rear lock assembly to the door trim.

[0009] A front locking cable connects the rear locking assembly to the front locking assembly;

[0010] The fully open limit lock cable connects the rear lock assembly to the fully open limit lock assembly.

[0011] Preferably, the rear lock assembly includes:

[0012] An outward-opening connecting rod is connected to one end of the outward-opening cable;

[0013] An inward-opening connecting rod is connected to one end of the inward-opening cable;

[0014] The rear lock assembly output link is connected to one end of the front lock cable and one end of the fully open limit lock cable.

[0015] The rear lock assembly locking mechanism engages with the rear lock latch, which is mounted on the C-pillar of the vehicle body and has an upper release safety knob.

[0016] The wiring harness connector is electrically connected to the vehicle controller via a wiring harness.

[0017] Preferably, the front locking assembly includes:

[0018] The front locking assembly output link is connected to the other end of the front locking cable;

[0019] The front lock opening linkage drives the front lock pawl mechanism to disengage from the locked position to the open position;

[0020] The front locking assembly locking mechanism engages with the front locking latch on the vehicle body.

[0021] Preferably, the fully open limit lock assembly includes:

[0022] The fully open limit lock assembly output link is connected to the other end of the fully open limit lock cable;

[0023] The fully open limit lock opening linkage drives the fully open limit lock pawl mechanism to disengage from the locked position to the open position;

[0024] The fully open limit lock assembly locking mechanism engages with the fully open limit lock latch located below the vehicle body. Preferably, the novel sliding door lock system for motor vehicles further includes an inward-opening handle assembly.

[0025] The inward-opening handle assembly includes a bracket, an inward-opening handle, a handle linkage mechanism, a pull rod A, a pull rod B, an inward-opening pull rod, a fully open limit lock pull rod, a torsion spring, a micro switch A, a micro switch B, a micro switch wiring harness, and electrical connectors.

[0026] Preferably, the inner cable includes inner cable A and inner cable B.

[0027] Preferably, the fully open limit lock assembly further includes a fully open limit lock micro switch.

[0028] Preferably, the rear lock assembly further includes an electric actuator that drives the rear lock assembly to lock with the rear lock latch.

[0029] Preferably, the inward-opening cable A connects the inward-opening handle assembly and the rear lock assembly.

[0030] Preferably, the inward-opening cable B connects the inward-opening handle assembly and the fully-opening limit lock assembly.

[0031] The beneficial effects of this utility model are as follows:

[0032] This utility model's rear lock assembly adopts fully electronic control, directly operating the front lock assembly and the fully open limit lock assembly for unlocking, eliminating the intermediate actuator found in traditional sliding door lock systems. As a mechanical backup, in the event of a vehicle power failure or emergency, the rear lock assembly can be mechanically unlocked by directly operating the inner opening cable. The inner opening cable's human-machine interface uses a pull ring or a hidden inner latch handle.

[0033] In another embodiment of this utility model, the inward-opening handle assembly is retained to accommodate the user habit of using an inward-opening handle in traditional sliding doors, while the rear lock still adopts a fully electronic control operation. The human-machine operation of the inward-opening cable is the inward-opening handle, which serves as a mechanical backup. In the event of a power failure or emergency, the inward-opening handle connects to the inward-opening cable A to directly operate the rear lock assembly for mechanical double-pull unlocking. Compared to traditional sliding door systems, this disclosure significantly simplifies the component structure, reduces system weight, saves installation and layout space inside the door, and allows for extremely flexible spatial arrangement. The number of cables is reduced to four types: inward-opening cable, outward-opening cable, limit lock cable, and front lock cable, simplifying the path from the operating surface to the execution surface and reducing installation and layout difficulty. The absence of an intermediate actuator installation restriction facilitates waterproofing of the interior panels, effectively improves the sound quality of the door lock system, reduces transmission links, increases transmission efficiency, facilitates door lock system assembly and layout, improves assembly efficiency, significantly reduces vehicle loading time, and substantially reduces component costs. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the layout of the novel sliding door lock system for motor vehicles proposed in this utility model;

[0035] Figure 2 This is a schematic diagram showing the arrangement of the novel sliding door lock system for motor vehicles proposed in this utility model inside the motor vehicle door;

[0036] Figure 3 This is a schematic diagram showing the arrangement of the novel sliding door lock system for motor vehicles proposed in this utility model, including the inward-opening handle assembly;

[0037] Figure 4 This is a schematic diagram showing the arrangement of the novel sliding door lock system for motor vehicles, including the inward-opening handle assembly, inside the vehicle door according to the present invention.

[0038] Figure 5 This is a diagram of the rear lock assembly and its connection structure.

[0039] Figure 6 This is a schematic diagram of the latch pawl mechanism in the semi-locked state.

[0040] Figure 7This is a schematic diagram of the fully locked state of the latch and pawl mechanism;

[0041] Figure 8 A schematic diagram illustrating the automatic engagement of an electric actuator;

[0042] Figure 9 A schematic diagram illustrating the electric unlocking process performed by the electric actuator;

[0043] Figure 10 This is a diagram illustrating the inward-opening lever unlocking mechanism.

[0044] Figure 11 This is a diagram illustrating the unlocking of the outward-opening lever;

[0045] Figure 12 A schematic diagram showing the rear lock assembly driving the front lock assembly and the limit lock assembly;

[0046] Figure 13 This is a schematic diagram of the central control insurance structure;

[0047] Figure 14 This is a schematic diagram of an inwardly opening double-pull structure;

[0048] Figure 15 This is a diagram of the front locking assembly and its connection structure.

[0049] Figure 16 Diagram of the fully open limit lock assembly and its connection structure;

[0050] Figure 17 A diagram showing the fully open limit lock assembly containing a fully open limit lock micro switch and its connection structure;

[0051] Figure 18 This is a diagram of the inward-opening handle assembly and its connection structure.

[0052] In the diagram: 100, Rear lock assembly; 10011, Rear lock tongue; 10012, Rear lock pawl; 10021, Actuator motor; 10022, Planetary gear train mechanism; 10023, Actuation mechanism; 10024, Automatic engagement push rod mechanism; 10025, Unlock lever; 10026, Track lever; 101, Outward opening linkage; 1011, Outward opening control lever mechanism; 1012, Linkage mechanism; 102, Inward opening linkage; 1021, Control lever mechanism; 103, Output linkage; 104, Mechanical central control safety knob; 1041, Central control safety drive motor; 1042, Central control safety gear; 1043, Safety inward opening pull rod mechanism; 1044, Safety outward opening pull rod mechanism; 105, Wiring harness connector component; 200, Front lock assembly; 201, Front lock tongue; 202. 205. Front locking pawl; 210. Front locking release lever; 300. Front locking latch; 301. Fully open limit lock assembly; 305. Fully open limit lock release lever; 310. Fully open limit lock latch; 320. Fully open limit lock micro switch; 401. Inward opening handle assembly; 402. Bracket; 403. Inward opening handle; 404. Handle linkage mechanism; 405. Pull rod A; 405, Pull rod B; 406, Inward opening pull rod; 407, Fully open limit lock pull rod; 408, Torsion spring; 409, Micro switch A; 410, Micro switch B; 411, Micro switch wiring harness; 412, Electrical connector; 20, Front lock cable; 30, Fully open limit lock cable; 40, Outward opening cable; 50, Inward opening cable; 50a, Inward opening cable A; 50b, Inward opening cable B. Detailed Implementation

[0053] A new sliding door lock system for motor vehicles, comprising a rear lock assembly 100, a front lock assembly 200, and a fully open limit lock assembly 300.

[0054] The rear door lock assembly 100 is located in the middle of the C-pillar of the door.

[0055] The rear lock assembly 100 includes a rear lock tongue 10011 and a rear lock pawl 10012 mechanism, as shown in the reference. Figure 6 and Figure 7 The rear locking tongue 10011 can move from the half-locked position to the fully locked position, and the rear locking pawl 10012 keeps the rear locking tongue 10011 in the locked position, locking the door to the vehicle body.

[0056] The rear lock assembly 100 integrates a built-in electric actuator, as shown in the reference. Figure 8 and Figure 9The electric actuator is an actuator motor 10021, which drives the planetary gear system 10022, which in turn drives the actuation mechanism 10023. This, in turn, causes the automatic engagement push rod mechanism 10024 to push the rear lock tongue 10011 from the semi-locked position to the fully locked position, locking the door to the vehicle body. Conversely, the actuator motor 10021 drives the planetary gear system 10022, which in turn drives the actuation mechanism 10023. This, in turn, causes the unlocking lever 10025 to drive the rear lock pawl 10012 from the locked position to the unlocked position, releasing the rear lock from the vehicle body.

[0057] The rear lock assembly 100 includes an inward-opening link 102 and an outward-opening link 101, as shown in the reference. Figure 11 The rear lock outward opening linkage 101 drives the linkage mechanism 1012 via the outward opening control lever 1011; refer to Figure 10 The rear lock inner opening linkage 102 drives the linkage mechanism 1012 through the control lever mechanism 1021; refer to Figure 10 and Figure 11 Subsequently, the linkage mechanism 1012 drives the unlocking lever 10025, which in turn drives the rear lock pawl mechanism to disengage from the locked position to the open position, thereby releasing the rear lock from the vehicle body.

[0058] The rear lock assembly 100 includes the output linkage 103, see reference. Figure 12 The output linkage 103 provides unlocking driving force to the front lock assembly 200 and the fully open limit lock assembly 300; the front lock is driven by the front lock cable 20 to drive the front lock opening linkage 205 to provide unlocking driving force to the front lock pawl mechanism 202, causing the front lock mechanism latch 201 to disengage from the locked position to the open position; the fully open limit lock is driven by the fully open limit lock cable 30 to drive the fully open limit lock opening linkage 305, causing the fully open limit lock mechanism latch 301 to disengage from the locked position to the open position, thereby releasing the front lock assembly and the fully open limit lock assembly from the vehicle body.

[0059] The rear lock assembly 100 also includes an electric central locking safety function, see reference. Figure 13 and Figure 14 The electric central locking system utilizes the power output from the central locking actuator motor 1041 to drive the central locking gear 1042, thereby actuating the inward-opening lever structure 1043 to release the lock. Simultaneously, the central locking gear 1042 drives the mechanical central locking knob 104, which in turn actuates the outward-opening lever structure 1044 to release the lock. When the electric central locking system is open, the outward-opening linkage 101 of the rear lock assembly 100 cannot drive the rear lock pawl 10012 mechanism from the locked position to the open position via the internal transmission mechanism of the rear lock, thus preventing the rear lock from disengaging from the vehicle body. When the electric central locking system is closed, the outward-opening linkage 101 of the rear lock assembly can drive the rear lock pawl 10012 mechanism from the locked position to the open position via the internal transmission mechanism of the rear lock, releasing the rear lock from the vehicle body.

[0060] It should be added that the rear lock assembly 100 includes, but is not limited to, the following functions: mechanical internal double-pull unlocking, mechanical external unlocking, central locking electric upper release safety CDL, manual upper release safety, manual child safety MCL, electric child safety PCL, mechanical manual upper release central locking safety knob, electric engagement, electric release, front lock cable power output, and fully open limit lock cable power output. The rear lock assembly internally provides various switch signals for the controller to control the rear lock assembly, including but not limited to the following signals: central locking safety signal, electric child safety signal, half-lock signal, full-lock signal, engagement reset or electric opening reset signal.

[0061] In some embodiments, the rear lock assembly 100 also includes a mechanical central locking safety mechanism. A mechanical central locking safety knob 104 powers the central locking safety gear 1042, thereby driving the inward-opening lever structure 1043 to release the safety mechanism. Simultaneously, the mechanical central locking safety knob 104 drives the outward-opening lever structure 1044 to release the safety mechanism. When the mechanical central locking safety knob is in the open position, the outward-opening linkage 101 of the rear lock assembly 100 cannot drive the rear lock pawl mechanism from the locked position to the open position via the internal transmission mechanism of the rear lock, thus preventing the rear lock from being locked to the vehicle body. When the mechanical central locking safety knob is in the closed position, the outward-opening linkage 101 of the rear lock assembly can drive the rear lock pawl mechanism from the locked position to the open position via the internal transmission mechanism of the rear lock, releasing the rear lock from the vehicle body. The rear lock assembly 100 also includes a wiring harness connector 105, which can be electrically connected to the vehicle controller via a wiring harness.

[0062] Furthermore, the rear lock assembly 100 also features an inward-opening double-pull unlocking function, consisting of an inward-opening lever 102 and a central locking gear 1042. Specifically, when the electric or mechanical central locking safety knob is in the open position, pulling the inward-opening lever 102 for the first time will only drive the central locking gear 1042 to close the central locking safety, but will not drive the rear lock pawl to move, thus failing to release the rear lock from the vehicle body. Pulling the inward-opening lever 102 for the second time will drive the rear lock pawl mechanism from the locked position to the open position via the internal transmission mechanism of the rear lock, releasing the rear lock assembly from the vehicle body.

[0063] In some embodiments, the front locking assembly 200 is located at the B-pillar of the vehicle door. The front locking assembly 200 includes a front locking bolt 201 and a front locking pawl mechanism 202. The front locking bolt 201 can move from a fully open position to a locked position, and the front locking pawl mechanism 202 holds the front locking bolt in the locked position, assisting in locking the vehicle door to the vehicle body. The front locking assembly 200 also includes a front locking release link 205, which can drive the front locking pawl mechanism 202 from the locked position to the open position.

[0064] In some embodiments, the fully open limit lock assembly 300 is located at the D-pillar of the vehicle door. The fully open limit lock assembly 300 includes a fully open limit lock bolt 301 and a fully open limit lock opening link 305. The fully open limit lock bolt can move from the fully open position to the fully locked position. The fully open limit lock opening link 305 holds the fully open limit lock bolt in the locked position. When the vehicle sliding door is fully opened, the fully open limit lock assembly 300 locks the sliding door to the vehicle body. When the vehicle fully open limit lock is unlocked, the fully open limit lock opening link 305 disengages from the fully open limit lock bolt 301 from the locked position to the open position.

[0065] In other embodiments, the fully open limit lock assembly 300 also includes a fully open limit lock micro switch 320, which functions to determine the open and closed state of the fully open limit lock, as described above. Figure 8 .

[0066] The novel sliding door lock system for motor vehicles in this embodiment also includes:

[0067] Outward-opening cable 40, which connects to rear lock assembly 100 and outward-opening handle of sliding door.

[0068] The inward-opening cable 50 connects the rear lock assembly 100 to the door interior trim.

[0069] The front locking cable 20 connects the rear locking assembly 100 and the front locking assembly 200.

[0070] The fully open limit lock cable 30 is connected to the rear lock assembly 100 and the fully open limit lock assembly 300.

[0071] Based on the rear lock assembly 100, front lock assembly 200, fully open limit lock assembly 300, outward opening cable 40, inward opening cable 50, front lock cable 20, and fully open limit lock cable 30, the main working principle of the novel sliding door lock system for motor vehicles in this embodiment is as follows:

[0072] 1. Electric closing and electric suction of the car door: When the car door is fully open, the fully open limit lock assembly 300 and the fully open limit lock latch 310 are locked. When it is necessary to close the car door, the electric actuator inside the rear lock assembly 100 can be activated by the electronic button on the sliding door interior or the electronic switch signal on the sliding door exterior handle, or other electronic trigger modes. The rear lock will drive the fully open limit lock cable 30 through the output linkage to drive the locking mechanism inside the fully open limit lock assembly 300 from the locked position to the open position. After the fully open limit lock assembly 300 and the fully open limit lock latch 310 are released, the sliding door electric drive device can drive the sliding door to close to the half-locked position along the sliding guide rail. Then, the electric suction function of the electric actuator inside the rear lock assembly 100 will suction the car door to the fully locked position.

[0073] 2. Electric door opening from the outside: With the door fully closed, the rear lock assembly 100 and rear lock latch 110 are locked, as are the front lock assembly 200 and front lock latch 210. When the rear lock assembly 100 is in the unlocked state, the electric actuator inside the rear lock assembly 100 can be activated via an electronic signal on the sliding door handle or other electronic triggering modes. The rear lock assembly 100 will first drive the front lock cable 20 through the output linkage 103, disengaging the locking mechanism inside the front lock assembly 200 from the locked position to the unlocked position, thus releasing the lock between the front lock assembly 200 and the front lock latch 210. Secondly, the electric actuator inside the rear lock assembly 100 can also provide unlocking driving force to the locking mechanism inside the rear lock assembly 110, driving the locking mechanism inside the rear lock assembly 100 from the locked position to the unlocked position, thus releasing the lock between the rear lock assembly 100 and the rear lock latch 110. At this time, when the sliding door electric drive unit drives the sliding door to the fully open position along the guide rail, the fully open limit lock assembly 300 will lock with the fully open limit lock latch 310 on the underside of the vehicle body, locking the door in the fully open position. When the rear lock assembly 100 is in the upper central locking state, the door cannot be opened electrically from outside the vehicle; the rear lock central locking safety must be released first.

[0074] 3. Electric door opening from inside the vehicle: With the door fully closed, the rear lock assembly 100 and rear lock latch 110 are locked, as are the front lock assembly 200 and front lock latch 210. When the vehicle is stationary and the electric child safety lock of the rear lock assembly 100 is engaged, the electric actuator inside the rear lock assembly 100 can be activated via the electronic button on the sliding door interior or other electronic triggering modes. The rear lock assembly 100 will first drive the front lock cable 20 through the output link 103, disengaging the locking mechanism inside the front lock assembly 200 from the locked position to the unlocked position, thus releasing the lock between the front lock assembly 200 and the front lock latch 210. Secondly, the electric actuator inside the rear lock assembly 100 can also provide unlocking force to the locking mechanism inside the rear lock assembly 100, disengaging it from the locked position to the unlocked position, thus releasing the lock between the rear lock assembly 100 and the rear lock latch 110. At this time, when the sliding door electric drive unit drives the sliding door to the fully open position along the guide rail, the fully open limit lock assembly 300 will lock with the fully open limit lock latch under the vehicle body, locking the door in the fully open position. When the rear lock is in the electric child safety lock state, the door cannot be opened electrically from inside the vehicle; the electric child safety lock on the rear lock must be disengaged first.

[0075] 4. Mechanically opening the doors from the outside: Under normal circumstances, users do not need to mechanically open the doors from the outside. However, in emergencies, such as a collision, the body controller can detect the collision signal and, within milliseconds of the collision, send a signal to release the central locking fuse. This signal triggers a drive voltage to the rear lock assembly 100, immediately releasing its central locking fuse. After the rear lock assembly 100's central locking fuse is released, under normal circumstances, the probability of the vehicle losing power due to a collision is extremely small, and external rescue personnel can still open the doors electrically. More seriously, if the collision impact is too great, causing the entire vehicle to lose power and the occupants to become incapacitated, rescuers can open the doors mechanically by forcefully pulling the sliding door's outer handle. The outer handle mechanically drives the outward opening cable 40, which connects to the outward opening linkage 101 of the rear lock assembly 100. This linkage drives the locking mechanism within the rear lock assembly 100. First, the rear lock, through the output linkage 103, drives the front lock cable 20, disengaging the locking mechanism within the front lock assembly 200 from the locked position to the open position, thus releasing the lock between the front lock assembly 200 and the front lock latch 210. Secondly, the mechanical actuator within the rear lock assembly 100 can also provide unlocking force to the locking mechanism within the rear lock assembly 100, disengaging it from the locked position to the open position, thus releasing the lock between the rear lock assembly 100 and the rear lock latch 110. At this point, rescuers can manually move the sliding door along the guide rail to the fully open position. The fully open limit lock assembly 300 will lock with the fully open limit lock latch 310 under the vehicle body, locking the door in the fully open position.

[0076] 5. Mechanically opening the doors from inside the vehicle: Under normal circumstances, users do not need to use mechanical means to open the doors from inside the vehicle. However, in an emergency, such as in the event of a collision, the vehicle controller will immediately disengage the central locking system of the rear locking assembly 100. If the electric child safety lock of the rear locking assembly 100 is in the activated state, the controller will immediately disengage the electric child safety lock. Under normal circumstances, the probability of a collision causing a complete loss of power to the vehicle is extremely small, and occupants can still open the doors electrically. More seriously, if the collision impact is too great and causes the entire vehicle to lose power, the occupants can open the doors mechanically. They can pull the ring on the inward-opening cable 50 or pull the hidden inward-opening handle on the door trim, which drives the inward-opening cable 50 to connect to the inward-opening linkage 102 of the rear lock assembly 100. The inward-opening linkage 102 drives the locking mechanism inside the rear lock assembly 100. The rear lock will first drive the front lock cable 20 through the output linkage, causing the locking mechanism inside the front lock assembly 200 to disengage from the locked position to the open position, thus releasing the front lock assembly 200 from the front lock latch 210. Secondly, the mechanical actuator inside the rear lock assembly 100 can also provide unlocking driving force to the locking mechanism inside the rear lock assembly 100, driving the locking mechanism inside the rear lock assembly 100 from the locked position to the open position, thus releasing the rear lock assembly 100 from the rear lock latch 110. At this time, the door can be opened manually. The occupants can manually pull the sliding door along the guide rail to the fully open position. The fully open limit lock assembly 300 will lock with the fully open limit lock latch 310 under the vehicle body, locking the door in the fully open position. In other emergency situations, if the occupants need to open the door mechanically, and the collision-disarmed central locking system has not been triggered, the occupants need to manually pull the inward-opening cable 50 twice to open the door from the inside: pulling it the first time drives the rear lock assembly to mechanically disarm the central locking system; pulling it the second time disarms the rear lock assembly, front lock assembly, and vehicle body, allowing the door to be opened manually.

[0077] In some embodiments, an inward-opening handle assembly 400 is also disclosed, which includes the following main components: bracket 401, inward-opening handle 402, handle linkage mechanism 403, pull rod A 404, pull rod B 405, inward-opening pull rod 406, fully open limit lock pull rod 407, torsion spring 408, micro switch A 409, micro switch B 410, micro switch wiring harness 411, and electrical connector 412. When opening the door, the inner opening handle 402 drives the handle linkage mechanism 403, which in turn drives the inner opening pull rod 406 to the unlock position via the pull rod A404. This causes the inner opening pull cable 50a to unlock the rear lock assembly 100. Simultaneously, the movement of the inner opening pull rod 406 causes the signal of the micro switch A409 to change. When closing the door, the inner opening handle 402 drives the handle linkage mechanism 403, which in turn drives the fully open limit lock pull rod 407 to the unlock position via the pull rod B405. This causes the fully open limit lock pull cable 50b to unlock the fully open limit lock assembly 100. Simultaneously, the movement of the fully open limit lock pull rod 407 causes the signal of the micro switch B410 to change.

[0078] The inward-opening cable includes inward-opening cable A50a and inward-opening cable B50b. Inward-opening cable A50a connects the inward-opening handle assembly 400 and the rear lock assembly 100, while inward-opening cable B50b connects the inward-opening handle assembly 400 and the fully open limit lock assembly 300.

[0079] It should be noted that the inward-opening handle assembly 400 does not necessarily include, for example: Figure 9 All components can be simplified by eliminating one or more of them, for example, by completely eliminating bracket 401 or using a simplified version or design variant of bracket 401 made of any material; another example is integrating microswitches A409 and B410 with the inward-opening handle 402 or handle linkage mechanism 403, or other design variants, all of which fall within the protection scope of this utility model.

[0080] Reference Figure 2 The novel sliding door lock system for motor vehicles is arranged in this embodiment. Figure 2 This is a schematic diagram showing the layout of the new sliding door lock system inside the left rear sliding door of a motor vehicle. The rear lock assembly 100 is located in... Figure 2 At position C of the sliding door of the vehicle, near the middle of the C-pillar, the rear lock assembly 100 can be locked to the rear lock latch 110 located on the vehicle body via its internal rear lock tongue 10011 and rear lock pawl 10012. The front lock assembly 200 is located at... Figure 2 Position B of the sliding door in the middle of the vehicle body, near the middle of the B-pillar, allows the front lock assembly 200 to lock with the front lock latch 210 located on the vehicle body via its internal front lock tongue 201 and front lock pawl 202 when the sliding door is closed, thus providing auxiliary locking. The fully open limit lock assembly 300 is located at... Figure 2In the sliding door D position of the vehicle, when the sliding door is in the fully open position, the fully open limit lock assembly 300 can lock the door in the fully open position through its internal fully open limit lock tongue 301 and fully open limit lock opening link 305 and the fully open limit lock latch 310 located under the vehicle body. Outward opening cable 40 connects the rear lock assembly 100 to the sliding door outward opening handle. Inward opening cable 50 connects the rear lock assembly 100 to the hidden inner handle on the door trim, or it can be directly arranged on the door trim as a pull ring. Front lock cable 20 connects the output link of the rear lock assembly 100 to the front lock assembly 200. Fully open limit lock cable 30 connects the output link of the rear lock assembly 100 to the fully open limit lock assembly 300.

[0081] Based on Figure 2 For the configuration of each component, refer to Figure 3 This embodiment also discloses that the inward-opening handle assembly 400 is retained for users of traditional sliding doors with inward-opening handles, but the opening and closing of the door still adopts fully electronic control operation, wherein the inward-opening handle assembly (400) is placed in Figure 3 Position A of the sliding door of the vehicle is provided. Outward-opening cable 40 connects the rear lock assembly 100 to the outward-opening handle of the sliding door. Inward-opening cable A50a connects the inward-opening linkage 102 of the rear lock assembly 100 to the inward-opening handle assembly 400. When the door is mechanically opened via the inward-opening handle, inward-opening cable A50a transmits the driving force to the rear lock assembly 100, which in turn drives the front lock assembly 200 to open, thus opening the rear lock assembly 100. Inward-opening cable B50b connects the inward-opening handle assembly 400 to the fully open limit lock assembly 300. In the event of a vehicle power failure, or when the door needs to be mechanically closed via the inward-opening handle, the fully open limit lock assembly 300 can be independently released from locking the vehicle body. Front lock cable 20 connects the output linkage 103 of the rear lock assembly 100 to the front lock assembly 200. The fully open limit lock cable 30 is connected to the output link 103 of the rear lock assembly 100 and the fully open limit lock assembly 300.

[0082] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel sliding door lock system for motor vehicles, characterized in that, Includes the rear lock assembly, the front lock assembly, and the fully open limit lock assembly; Also includes: An outward-opening cable connects the rear lock assembly to the outward-opening handle of the sliding door. An inward-opening cable connects the rear lock assembly to the door trim. A front locking cable connects the rear locking assembly to the front locking assembly; The fully open limit lock cable connects the rear lock assembly to the fully open limit lock assembly.

2. A novel sliding door lock system for motor vehicles according to claim 1, characterized in that, The rear lock assembly includes: An outward-opening connecting rod is connected to one end of the outward-opening cable; An inward-opening connecting rod is connected to one end of the inward-opening cable; The rear lock assembly output link is connected to one end of the front lock cable and one end of the fully open limit lock cable. The rear lock assembly locking mechanism engages with the rear lock latch, which is mounted on the C-pillar of the vehicle body and has an upper release safety knob. The wiring harness connector is electrically connected to the vehicle controller via a wiring harness.

3. A novel sliding door lock system for motor vehicles according to claim 2, characterized in that, The front locking assembly includes: The front locking assembly output link is connected to the other end of the front locking cable; The front lock opening linkage drives the front lock pawl mechanism to disengage from the locked position to the open position; The front locking assembly locking mechanism engages with the front locking latch on the vehicle body.

4. A novel sliding door lock system for motor vehicles according to claim 2, characterized in that, The fully open limit lock assembly includes: The fully open limit lock assembly output link is connected to the other end of the fully open limit lock cable; The fully open limit lock opening linkage drives the fully open limit lock pawl mechanism to disengage from the locked position to the open position; The fully open limit lock assembly locking mechanism engages with the fully open limit lock latch located below the vehicle body.

5. A novel sliding door lock system for motor vehicles according to claim 1, characterized in that, The novel sliding door lock system for motor vehicles also includes an inward-opening handle assembly: The inward-opening handle assembly includes a bracket, an inward-opening handle, a handle linkage mechanism, a pull rod A, a pull rod B, an inward-opening pull rod, a fully open limit lock pull rod, a torsion spring, a micro switch A, a micro switch B, a micro switch wiring harness, and electrical connectors.

6. A novel sliding door lock system for motor vehicles according to claim 5, characterized in that, The inner cable includes inner cable A and inner cable B.

7. A novel sliding door lock system for motor vehicles according to claim 1, characterized in that, The fully open limit lock assembly also includes a fully open limit lock micro switch.

8. A novel sliding door lock system for motor vehicles according to claim 2, characterized in that, The rear lock assembly also includes an electric actuator that drives the rear lock assembly to lock with the rear lock latch.

9. A novel sliding door lock system for motor vehicles according to claim 6, characterized in that, The inward-opening cable A connects the inward-opening handle assembly and the rear lock assembly.

10. A novel sliding door lock system for motor vehicles according to claim 6, characterized in that, The inward-opening cable B connects the inward-opening handle assembly to the fully-opening limit lock assembly.

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