Integrated door lock for automobile

Abstract

The utility model relates to the technical field of automobile door locks, in particular to an integrated door lock for an automobile, which comprises a lock body sub-assembly and a shell sub-assembly, the lock body sub-assembly is used for controlling external opening and closing, external unlocking and locking of the door lock body, and the shell sub-assembly is used for controlling internal opening and closing, internal unlocking and locking of the door lock body. Unlocking and locking functions can be achieved in two modes, and the two modes are finally transmitted to the same part, namely the locking connecting rod, so that the whole automobile door lock is compact in structural layout, all the parts are efficiently utilized, the transmission efficiency of the whole automobile door lock is high, the control performance is good, and the service life of the automobile door lock is prolonged. The problems that a series of performance instability such as feedback signals can be caused if the relative installation positions of an actuator and a lock body of an existing car door lock deviate or parts deform, and use of a user is affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of automotive door lock technology, and in particular to an integrated door lock for automobiles. Background Technology

[0002] With the development of technology, people's comprehensive requirements for automobiles are gradually increasing. The door lock ring assembly is a component used in automobile doors and is an essential part of automobile functionality. The door lock ring assembly can effectively connect the car body and the door, enabling the door to be locked or unlocked.

[0003] Existing car door locks are basically split structures, with the electrical and mechanical parts separate. Locking or unlocking is achieved through a transmission between an electric actuator's lever and the lock body's mechanical parts. If the relative installation position of the actuator and lock body deviates, or if parts deform, it can cause instability in feedback signals and other performance issues, affecting user experience. Therefore, we propose an integrated door lock for automobiles. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated door lock for automobiles, which can realize the unlocking and locking functions in two ways. Both methods ultimately transmit the signal to the same part, namely the locking linkage, making the entire door lock structure compact, making efficient use of each component, and achieving high transmission efficiency and good control performance. This solves the problem that if the relative installation position of the actuator and lock body of the existing door lock deviates or the parts are deformed, it will cause a series of performance instabilities such as feedback signals, which will affect the user's use.

[0005] This utility model provides the following technical solution: an integrated door lock for automobiles, comprising a lock body sub-assembly and a shell sub-assembly;

[0006] The lock body sub-assembly is used to control the external opening and closing, external unlocking and locking of the door lock body. The lock body sub-assembly includes a lock body, ratchet shaft, pawl shaft, ratchet, pawl, external locking linkage arm, external opening rocker arm and push rod.

[0007] The ratchet shaft and pawl shaft pass through the lock body, with the ratchet and pawl positioned below the lock body. From bottom to top, the pawl shaft is fitted with a cover plate, pawl, outward-opening rocker arm, and connecting plate, and is fixed to the cover plate and connecting plate by riveting. From bottom to top, the ratchet shaft is fitted with a cover plate, ratchet return spring, ratchet, and connecting plate, and is fixed to the cover plate and connecting plate by riveting. The outward-locking linkage arm and outward-opening rocker arm are positioned on top of the lock body, with one end of the push rod positioned on the outward-locking linkage arm and the other end positioned on the outward-opening rocker arm.

[0008] The housing sub-assembly is used to control the internal opening and closing, internal unlocking and locking of the door lock body. The housing sub-assembly includes a housing, an external opening rocker arm, and an external locking linkage arm.

[0009] The inner opening portion of the housing is fitted with an inner opening rocker arm and an inner opening return spring; one end of the inner opening rocker arm is connected to an inner opening cable, and the other end is in contact with an outer opening rocker arm; the inner locking and stopping portion of the housing is fitted with an inner locking rocker arm, a worm gear, a motor and a conductive plate; one end of the inner locking rocker arm is fitted with an inner locking torsion spring and an inner locking cable, and the other end is in contact with an outer locking linkage arm; a micro switch is fitted on the conductive plate.

[0010] Preferably, the cover plate is fixedly connected to the door sheet metal by screws, and the ratchet and pawl holes on the cover plate are convex to reduce the contact area between the ratchet and pawl and the cover plate during the movement of the ratchet and pawl.

[0011] Preferably, it also includes an anti-misoperation rocker arm, which is movably sleeved on the inner locking rocker arm. When the door is open, one end of the anti-misoperation rocker arm abuts against the ratchet, preventing the inner locking rocker arm from locking. When the door is closed, one end of the anti-misoperation rocker arm does not contact the ratchet, and the inner locking rocker arm can lock.

[0012] Preferably, it also includes a latch shock absorber, which is fixedly sleeved in the middle of the lock body. The latch shock absorber is used to prevent the door from impacting the lock body when the door is closed.

[0013] Preferably, the two ends of the connecting plate are fixedly connected to the pawl shaft and the ratchet shaft, respectively, and the connecting plate is used to position and fix the pawl shaft and the ratchet shaft.

[0014] Preferably, the housing has an L-shaped structure, with the horizontal portion positioned above the lock body and the vertical portion positioned perpendicular to the lock body. The housing and the cover plate are fixedly connected by a screw, and the housing and the lock body are fixedly connected by a screw.

[0015] Preferably, the cover is fixedly sleeved on the housing, and the cover and the housing are fixedly connected by two screws. The cover has a flip cover in the middle for opening and replacing the cable.

[0016] Preferably, the upper end of one side of the inner locking rocker arm abuts against the spring of the micro switch to output an unlocking signal, the middle part is connected to the inner locking cable, and the lower end is connected to the outer locking linkage arm.

[0017] Preferably, the straight rack of the internal locking rocker arm meshes with the worm gear, the worm gear is sleeved on the motor shaft of the motor, the motor is mounted on the housing and connector and connected to the conductive plate, and the worm gear is driven to rotate by the motor.

[0018] Preferably, one end of the outer locking rod is provided with a straight rack, which meshes with the inner locking rocker arm. When the inner locking rocker arm slides, it triggers a micro switch through a rounded corner.

[0019] This utility model provides an integrated door lock for automobiles, which can achieve unlocking and locking functions in two ways: opening the lock cylinder by turning the car key, and electric unlocking and locking, i.e., controlling the motor. Both methods ultimately transmit power to the same component, namely the locking linkage, making the entire door lock structure compact, utilizing each component efficiently, and resulting in high transmission efficiency and good control performance. This technical solution also has an anti-mislocking function; when the door is open, the locking function is disabled, and locking is only achieved when the door is closed, providing high security and a more user-friendly operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the explosion of the car door lock of this utility model;

[0021] Figure 2 This utility model relates to a door lock body sub-assembly;

[0022] Figure 3 This utility model relates to a door lock housing sub-assembly;

[0023] Figure 4 This is a schematic diagram of the inward opening mechanism of the door lock of this utility model;

[0024] Figure 5 This is a schematic diagram of the door lock outward opening mechanism of this utility model;

[0025] Figure 6 This is a schematic diagram of the assembly of the ratchet and pawl of the door lock of this utility model;

[0026] Figure 7 This is a schematic diagram of the ratchet and pawl semi-lock engagement position I of the door lock of this utility model;

[0027] Figure 8 This is a schematic diagram of the ratchet and pawl fully engaged in position II of the door lock of this utility model;

[0028] Figure 9 This is a schematic diagram of the ratchet and pawl of the door lock in the open state.

[0029] Figure 10 This is a schematic diagram of side A and side B of the ratchet wheel of the door lock of this utility model;

[0030] Figure 11 This is a schematic diagram of the C-side of the door lock pawl of this utility model;

[0031] Figure 12 This is a schematic diagram of the internal locking mechanism of the door lock of this utility model;

[0032] Figure 13 This is a schematic diagram of the unlocking mechanism inside the door lock of this utility model;

[0033] Figure 14This is a schematic diagram of the external locking mechanism of the door lock of this utility model;

[0034] Figure 15 This is a schematic diagram of the external unlocking mechanism of the door lock of this utility model;

[0035] Figure 16 This is a schematic diagram of the anti-mislocking mechanism for the door lock of this utility model;

[0036] Figure 17 This is a schematic diagram of the failure mechanism of the door lock anti-mislocking device of this utility model;

[0037] Figure 18 This is a schematic diagram of the door lock unlocking signal output mechanism of this utility model.

[0038] In the diagram: 1. Lock body; 2. Housing; 3. Housing cover; 4. Outer locking rocker arm; 5. Outer locking linkage arm; 6. Inner locking rocker arm; 7. Outer opening connector; 8. Ratchet return spring; 9. Conductive plate; 10. Cover plate; 11. Outer opening rocker arm; 12. Inner opening rocker arm; 13. Push rod; 14. Ratchet; 15. Inner opening cable; 16. Inner locking cable; 17. Outer locking pull rod; 18. Outer opening pull rod; 19. Fixing buckle; 20. Ratchet 21. Shaft; 22. Pawl shaft; 23. External locking joint; 24. Pawl; 25. Connecting plate; 26. Locking shock absorber; 27. Inward opening return spring; 28. Pawl return spring; 29. ​​Outward opening return spring; 30. Anti-misoperation rocker arm; 31. Inward locking torsion spring; 32. Motor; 33. Worm gear; 34. Pawl shock absorber; 35. Micro switch; 36. Screw 1; 37. Screw 2; 38. Lock body sub-assembly; 39. Housing sub-assembly. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] like Figure 1-3 As shown, this utility model provides a technical solution: an integrated door lock for automobiles, including a lock body sub-assembly 37 and a shell sub-assembly 38;

[0041] The lock body sub-assembly 37 is used to control the external opening and closing, external unlocking and locking of the door lock body 1. The lock body sub-assembly 37 includes the lock body 1, ratchet shaft 20, pawl shaft 21, ratchet 14, pawl 23, external locking linkage arm 5, external opening rocker arm 11 and push rod 13.

[0042] Ratchet shaft 20 and pawl shaft 21 pass through lock body 1, and ratchet 14 and pawl 23 are located below lock body 1; pawl shaft 21 is fitted with cover plate 10, pawl 23, outward opening rocker arm 11 and connecting plate 24 from bottom to top, and pawl shaft 21 is fixed to cover plate 10 and connecting plate 24 by riveting; ratchet shaft 20 is fitted with cover plate 10, ratchet return spring 8, ratchet 14 and connecting plate 24 from bottom to top, and ratchet shaft 20 is fixed to cover plate 10 and connecting plate 24 by riveting; outward locking linkage arm 5 and outward opening rocker arm 11 are located on lock body 1, and push rod 13 is located at one end on outward locking linkage arm 5 and at the other end on outward opening rocker arm 11;

[0043] The housing sub-assembly 38 is used to control the inner opening and closing, inner unlocking and locking of the door lock body 1. The housing sub-assembly 38 includes the housing 2, the outward opening rocker arm 11, and the outward locking linkage arm 5.

[0044] The inner opening portion of the housing 2 is fitted with an inner opening rocker arm 12 and an inner opening return spring 26; one end of the inner opening rocker arm 12 is connected to an inner opening pull cable 15, and the other end is in contact with an outer opening rocker arm 11; the inner locking and stopping portion of the housing 2 is fitted with an inner locking rocker arm 6, a worm gear 32, a motor 31 and a conductive plate 9; one end of the inner locking rocker arm 6 is fitted with an inner locking torsion spring 30 and an inner locking pull cable 16, and the other end is in contact with an outer locking linkage arm 5; a micro switch 34 is fitted on the conductive plate 9.

[0045] The cover plate 10 is fixedly connected to the door sheet metal by screws. The ratchet and pawl holes on the cover plate 10 are convex to reduce the contact area between the ratchet 14 and pawl 23 and the cover plate 10 during the movement, so as to ensure smooth movement of the ratchet 14 and pawl 23.

[0046] The push rod 13 is movably sleeved on the outer locking linkage arm 5, and the other end is attached to the outer opening rocker arm 11. When the door lock body 1 is unlocked, the head of the push rod 13 contacts the pawl 23, which achieves the door opening effect. When the door lock body 1 is locked, the head of the push rod 13 cannot contact the pawl 23, and does not achieve the door opening effect.

[0047] One end of the outer locking linkage arm 5 is sleeved on the lock body 1, and the other end is in contact with the inner locking rocker arm 6, so that the inner and outer locking and unlocking are linked.

[0048] The anti-mislocking rocker arm 29 is movably mounted on the inner locking rocker arm 6. When the door is opened, the other end of the anti-mislocking rocker arm 29 presses against the ratchet 14, and the inner locking rocker arm 6 cannot be locked, thus playing the anti-mislocking function. When the door is closed, the other end of the anti-mislocking rocker arm 29 does not contact the ratchet 14, and the inner locking rocker arm 6 can be locked, thus the anti-mislocking function is ineffective.

[0049] The two ends of the connecting plate 24 are fixedly connected to the pawl shaft 21 and the ratchet shaft 20 respectively, and have the function of positioning and fixing the pawl shaft 21 and the ratchet shaft 20.

[0050] Pad 23 is movably sleeved on pad shaft 21 below lock body 1. Pad 23 has the function of interfering with the rotation of ratchet 14. Pad 23 and lock body 1 bracket are fixedly provided with pad return spring 27. Ratchet 14 is movably sleeved on ratchet shaft 20 below lock body 1 and meshes with pad 23. Ratchet 14 has a latch opening that can engage the door latch. Ratchet return spring 8 is also fixedly provided between ratchet 14 and lock body 1.

[0051] When the outward-opening rocker arm 11 rotates, it drives the outward-opening linkage arm to push the pawl 23 to rotate. The pawl 23 then rotates, causing the pawl 23 to separate from the ratchet 14. The ratchet 14 can then rotate around the ratchet shaft 20, causing the latch to disengage from the latch opening and the door to open outwards.

[0052] The housing 2 is L-shaped. The horizontal part of the housing 2 is set above the lock body 1, and the vertical part is set perpendicular to the lock body 1. The housing 2 is fixedly connected to the lock body 1 by self-tapping screws and ST2.9*16 flower-shaped pan head self-tapping screws, and is fixedly connected to the cover plate 10 by ST2.9*13 internal hexagon countersunk head self-tapping screws; screw one 35 is an ST2.9*13 internal hexagon countersunk head self-tapping screw, and screw two 36 is an ST2.9*16 flower-shaped pan head self-tapping screw.

[0053] The cover 3 is fixedly sleeved on the housing 2. The cover 3 is fixedly connected to the housing 2 by ST2.9*16 flower-shaped pan head self-tapping screws. The cover 3 has a flip cover in the middle, which can be opened at any time to replace the cable. Each cable is fixed by a fixing buckle 19.

[0054] An inner locking rocker arm 6 is fitted onto the housing 2. The upper end of one side of the inner locking rocker arm 6 abuts against the spring of the micro switch 34 to output an unlocking signal. The middle part is connected to the inner locking cable 16 to realize the inner locking and unlocking function of the door lock. The lower end is connected to the outer locking linkage arm 5 to realize the linkage function of the inner and outer locking and unlocking functions of the door lock. The straight rack of the inner locking rocker arm 6 meshes with the worm gear 32. The worm gear 32 is fitted onto the motor shaft. The motor 31 is mounted on the housing 2 and connected to the conductive plate 9.

[0055] The conductive plate 9 is mounted on the housing 2; the motor 31 is mounted on the housing 2 and the connector; one end of the worm gear 32 is sleeved on the shaft of the motor 31, and the worm gear 32 is driven to rotate by the motor 31; the outer locking rod 17, that is, the locking link, has a straight rack at one end and meshes with the inner locking rocker arm 6, and the unlocking signal switch is triggered by the rounded corner when the inner locking rocker arm 6 slides.

[0056] like Figure 4As shown, the door lock can be opened from the inside: when the door lock is in the unlocked state, the inward opening cable 15 connected to the door handle assembly is pulled. The inward opening cable 15 drives the inward opening rocker arm 12 to rotate. The inward opening rocker arm 12 drives the outward opening rocker arm 11 to rotate. The outward opening rocker arm 11 moves together with the push rod 13. The push rod 13 drives the pawl 23 to move, thereby releasing the engaged ratchet 14. The ratchet 14 is reset by the ratchet return spring 8, thus achieving the open state and realizing the door lock can be opened from the inside.

[0057] After the car door is closed, the latch drives the ratchet 14 to rotate around the ratchet shaft 20, and the pawl 23 is reset by the pawl return spring 27, thereby creating engagement and keeping the car door securely and reliably closed.

[0058] like Figure 5 As shown, the door lock external opening function is realized: when the door lock external lock is in the unlocked state, pull the external opening lever 18 connected to the door external handle. The external opening lever 18 drives the external opening rocker arm 11 to rotate through the external opening connector 7. The external opening rocker arm 11 and the push rod 13 move together. The push rod 13 drives the pawl 23 to move, thereby releasing the engaged ratchet 14. The ratchet 14 is reset through the ratchet return spring 8, thereby achieving the open state and realizing the door lock internal opening.

[0059] When the outward-opening lever 18 connected to the outward handle is released, the outward-opening rocker arm 11 is reset under the action of the outward-opening return spring 28.

[0060] After the car door is closed, the latch drives the ratchet 14 to rotate around the ratchet shaft 20, and the pawl 23 is reset by the pawl return spring 27, thereby creating engagement and keeping the car door securely and reliably closed.

[0061] like Figure 6 As shown, the cover plate 10 is fitted onto the lower end of the ratchet shaft 20 and the pawl shaft 21 and fixed by riveting. As the ratchet shaft 20 and the pawl shaft 21 pass through the lock body 1, the cover plate 10 is embedded into the bottom of the lock body 1. The ratchet return spring 8 fitted on the ratchet shaft 20 is installed on the upper side of the lock body 1. The pawl return spring 27 is fitted on the lock body 1 and contacts the pawl 23. A connecting plate 24 is installed on the upper side of the lock body 1. The two ends of the connecting plate 24 are fitted onto the upper ends of the pawl shaft 21 and the ratchet shaft 20 and are fastened by riveting. The lock body 1 is also fitted with a pawl shock-absorbing pad 33. The lock body 1 is also fitted with a latch shock-absorbing pad 25. The latch shock-absorbing pad 25 has the function of preventing the door from impacting the lock body 1 when the door is closed.

[0062] like Figure 7As shown, to achieve the half-lock state with the door lock in position I: When the latch pushes the ratchet 14 to rotate around the ratchet shaft 20, the pawl 23 maintains lateral contact with the ratchet 14 under the action of the pawl return spring 27. When the latch stops pushing the ratchet 14 to rotate, the pawl 23 returns to its original position under the action of the pawl return spring 27, so that surface A of the ratchet 14 contacts surface C of the pawl 23. At this time, the ratchet 14 is in the half-lock state, and the door lock is in position I. Surfaces A, B, and C are as follows. Figure 10 and 11 shown.

[0063] like Figure 8 As shown, to achieve the fully locked state with the door lock in position II: When ratchet 14 is in the half-lock state, the latch continues to push ratchet 14 to rotate around ratchet shaft 20 to its maximum position. Pad 23 is then reset by the pad return spring 27, causing surface B of ratchet 14 to contact surface C of pad 23. At this time, ratchet 14 is in the fully locked state, and the door lock is in position II. Surfaces A, B, and C are shown below. Figure 10 and 11 shown.

[0064] like Figure 9 As shown, the door lock unlocking function is achieved in the open state: When ratchet 14 is in the fully locked state, pushing push rod 13 causes pawl 23 to rotate around pawl shaft 21. The C-side of pawl 23 separates from the B-side of ratchet 14, and ratchet 14 resets under the action of ratchet return spring 8, thus putting ratchet 14 in the open state and unlocking the door. Surfaces A, B, and C are shown below. Figure 10 and 11 shown.

[0065] like Figure 12 As shown, the mechanical door lock achieves the internal locking function: when the door lock is in the unlocked state, the internal locking button of the inner handle is rotated to push the internal locking cable 16, which drives the internal locking rocker arm 6 to rotate. The internal locking rocker arm 6 drives the external locking linkage arm 5, and the external locking linkage arm 5 pushes the external locking rocker arm 4 to the locked position. At the same time, it drives the push rod 13 to disengage from the pawl 23, so that the push rod 13 driven by the external opening rocker arm 11 when it is turned on cannot contact the pawl 23 to open the door lock, thus achieving door lock.

[0066] like Figure 13 As shown, the mechanical door lock's internal unlocking function is achieved as follows: When the door lock is in the locked state, rotating the internal locking button on the internal handle pulls the internal locking cable 16, which in turn drives the internal locking rocker arm 6 to rotate. The internal locking rocker arm 6 then drives the external locking linkage arm 5, which in turn pushes the external locking rocker arm 4 to the unlocked position. Figure 13 As shown, the push rod 13 is simultaneously driven to contact the pawl 23, so that the push rod 13 driven by the outward-opening rocker arm 11 can contact the pawl 23 to open the door lock and unlock the door.

[0067] The locked state means that the mechanical parts cannot apply force to the pawl 23 and cannot change the state of the ratchet 14 and pawl 23.

[0068] The unlocked state means that the mechanical parts can apply force to the pawl 23, which can change the state of the ratchet 14 and the pawl 23.

[0069] like Figure 14 As shown, the door lock external locking function is achieved as follows: When the door lock external locking is in the unlocked state, the key turns the lock cylinder assembly, and the external locking lever 17 pulls the external locking rocker arm 4 through the external locking connector 22. The external locking rocker arm 4 drives the external locking linkage arm 5 to rotate, and at the same time drives the push rod 13 to disengage from the pawl 23, so that the push rod 13 driven by the external opening rocker arm 11 when it is turned cannot contact the pawl 23 to open the door lock, thus achieving door lock.

[0070] like Figure 15 As shown, the door lock external unlocking function is realized as follows: When the door lock external locking is in the locked state, the key turns the lock cylinder assembly, and the external locking lever 17 pulls the external locking rocker arm 4 through the external locking connector 22. The external locking rocker arm 4 drives the external locking linkage arm 5 to rotate, and at the same time drives the push rod 13 to disengage from the pawl 23, so that the push rod 13 driven by the external opening rocker arm 11 when it is turned can contact the pawl 23 to open the door lock, thus realizing the door lock unlocking.

[0071] like Figure 16 As shown, the anti-misoperation rocker arm 29 is mounted on the inner locking rocker arm 6 and moves together with the inner locking rocker arm 6. When the door is opened, that is, when the ratchet 14 is in the open state, during the process of the inner locking rocker arm 6 moving from the unlocked position to the locked position, the anti-misoperation rocker arm 29 contacts the ratchet 14, and the anti-misoperation rocker arm 29 cannot move downward, which causes the inner locking rocker arm 6 to be unable to return to the locked position.

[0072] like Figure 17 As shown, the anti-misoperation rocker arm 29 is mounted on the inner locking rocker arm 6 and moves together with the inner locking rocker arm 6. When the door is closed, that is, when the ratchet 14 is in the closed state, during the process of the inner locking rocker arm 6 moving from the unlocked position to the locked position, the anti-misoperation rocker arm 29 does not contact the ratchet 14, the anti-misoperation rocker arm 29 can move downward, and the inner locking rocker arm 6 can return to the locked position normally.

[0073] like Figure 18 As shown, a conductive plate 9 is arranged from top to bottom on the vertical surface of the housing 2. A micro switch 34 is mounted on the mounting base of the conductive plate 9. The spring of the micro switch 34 is in contact with or separated from the cylindrical push angle of the inner locking rocker arm 6.

[0074] When the inner locking rocker arm 6 is in the unlocked state, the cylindrical push angle of the inner locking rocker arm 6 presses the spring of the micro switch 34, and the door lock gives an unlocking signal feedback.

[0075] This technical solution has the following functions:

[0076] I. Working principle of the outward opening function of this technical solution: The outward opening function is achieved by pulling the outward opening lever 18, which is linked to the outer door handle. The outward opening lever 18 pushes the outward opening rocker arm 11 to rotate along the mounting post of the lock body 1, causing the push rod 13 on the outward opening rocker arm 11 to move. The push rod 13 pushes the pawl 23 to move, causing the engaged ratchet 14 to release. The ratchet 14 is reset by the ratchet return spring 8, thereby opening the door. After the door is closed, the latch drives the ratchet 14 to rotate around the ratchet shaft 20, and the pawl 23 is reset by the pawl return spring 27, thereby engaging and ensuring that the door is securely and reliably closed.

[0077] II. Working Principle of the Inward Opening Door Function in this Technical Solution: The inward opening door function involves pulling the inner door handle assembly, which in turn activates the inward opening cable 15. The inward opening cable 15 drives the inward opening rocker arm 12 to rotate, which in turn drives the outward opening rocker arm 11 to rotate. Simultaneously, this drives the push rod 13 on the outward opening rocker arm 11 to move. The push rod 13 pushes the pawl 23 to move, causing the engaged ratchet 14 to release. The ratchet 14 is then reset via the ratchet return spring 8, thus opening the door. After the door is closed, the latch drives the ratchet 14 to rotate around the ratchet shaft 20, and the pawl 23 is reset via the pawl return spring 27, thus engaging and ensuring the door is securely and reliably closed.

[0078] III. Working Principle of Locking and Unlocking Functions in this Technical Solution: The external locking and unlocking functions are achieved by connecting the door lock cylinder assembly and the external locking rocker arm 4 on the lock body 1 via the external locking lever 17. When the lock cylinder assembly is turned by the key, the external locking lever 17 drives the external locking rocker arm 4 to move, which in turn drives the external locking linkage arm 5 to rotate. Simultaneously, the push rod 13 disengages from or engages with the pawl 23. When the push rod 13 engages with the pawl 23, the door lock is unlocked; when the push rod 13 disengages from the pawl 23, the door lock is locked.

[0079] The internal locking and unlocking functions are achieved by connecting the internal locking button on the internal handle assembly to the internal locking rocker arm 6 via the internal locking cable 16. When the internal locking button is pressed, the internal locking cable 16 pushes the internal locking rocker arm 6 to rotate. The internal locking rocker arm 6 then engages the external locking linkage arm 5. The external locking linkage arm 5 causes the push rod 13 on the external locking rocker arm 4 to disengage from the pawl 23, thus locking the door. When the internal locking button is opened, it pulls the internal locking rocker arm 6 to rotate. The internal locking rocker arm 6 then engages the external locking linkage arm 5. The external locking linkage arm 5 causes the push rod 13 on the external locking rocker arm 4 to engage with the pawl 23, thus unlocking the door.

[0080] Electric locking and unlocking function: When the door lock is in the unlocked state, the motor 31 is powered on and rotates, driving the worm gear 32 to rotate. The teeth of the worm gear 32 mesh with the teeth of the inner locking rocker arm 6, driving the inner locking rocker arm 6 to rotate, thereby realizing the electric unlocking and locking function of the door lock body 1.

[0081] IV. Working principle of the anti-mislocking function of this technical solution: The anti-mislocking rocker arm 29 is sleeved on the inner locking rocker arm 6 and moves downward together with the inner locking rocker arm 6. When the door is opened, that is, when the ratchet 14 is in the open state, during the process of the inner locking rocker arm 6 moving from the unlocked position to the locked position, the anti-mislocking rocker arm 29 contacts the ratchet 14, and the anti-mislocking rocker arm 29 cannot move downward, so that the inner locking rocker arm 6 cannot return to the locked position, thus realizing the anti-mislocking function of the door lock body 1.

[0082] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An integrated door lock for automobiles, characterized in that: It includes a lock body sub-assembly (37) and a housing sub-assembly (38); The lock body sub-assembly (37) is used to control the opening and closing, unlocking and locking of the door lock body (1). The lock body sub-assembly (37) includes the lock body (1), ratchet shaft (20), pawl shaft (21), ratchet (14), pawl (23), external locking linkage arm (5), external opening rocker arm (11) and push rod (13). The ratchet shaft (20) and pawl shaft (21) pass through the lock body (1), and the ratchet (14) and pawl (23) are located below the lock body (1); the pawl shaft (21) is fitted with a cover plate (10), pawl (23), outward opening rocker arm (11) and connecting plate (24) from bottom to top, and the pawl shaft (21) is fixed to the cover plate (10) and connecting plate (24) by riveting; the ratchet shaft (20) is fitted with a cover plate (10), ratchet return spring (8), ratchet (14) and connecting plate (24) from bottom to top, and the ratchet shaft (20) is fixed to the cover plate (10) and connecting plate (24) by riveting; the outward locking linkage arm (5) and outward opening rocker arm (11) are located on the lock body (1), and one end of the push rod (13) is located on the outward locking linkage arm (5), and the other end is located on the outward opening rocker arm (11); The housing sub-assembly (38) is used to control the internal opening and closing, internal unlocking and locking of the door lock body (1). The housing sub-assembly (38) includes a housing (2), an external opening rocker arm (11), and an external locking linkage arm (5). The inner opening part of the housing (2) is fitted with an inner opening rocker arm (12) and an inner opening return spring (26); one end of the inner opening rocker arm (12) is connected to an inner opening cable (15), and the other end is in contact with an outer opening rocker arm (11); the inner locking and stopping part of the housing (2) is fitted with an inner locking rocker arm (6), a worm (32), a motor (31) and a conductive plate (9); one end of the inner locking rocker arm (6) is fitted with an inner locking torsion spring (30) and an inner locking cable (16), and the other end is in contact with an outer locking linkage arm (5); a micro switch (34) is fitted on the conductive plate (9).

2. The integrated door lock for automobiles according to claim 1, characterized in that: The cover plate (10) is fixedly connected to the door sheet metal by screws. The ratchet and pawl holes on the cover plate (10) are convex to reduce the contact area between the ratchet (14) and pawl (23) and the cover plate (10) during the movement.

3. The integrated door lock for automobiles according to claim 1, characterized in that: It also includes an anti-misoperation rocker arm (29), which is movably sleeved on the inner locking rocker arm (6). When the car door is open, one end of the anti-misoperation rocker arm (29) presses against the ratchet (14), preventing the inner locking rocker arm (6) from locking. When the car door is closed, one end of the anti-misoperation rocker arm (29) does not contact the ratchet (14), and the inner locking rocker arm (6) can lock.

4. The integrated door lock for automobiles according to claim 1, characterized in that: It also includes a latch shock absorber (25), which is fixedly sleeved in the middle of the lock body (1). The latch shock absorber (25) is used to prevent the door from impacting the lock body (1) when the door is closed.

5. The integrated door lock for automobiles according to claim 1, characterized in that: The two ends of the connecting plate (24) are fixedly connected to the pawl shaft (21) and the ratchet shaft (20) respectively. The connecting plate (24) is used to position and fix the pawl shaft (21) and the ratchet shaft (20).

6. The integrated door lock for automobiles according to claim 1, characterized in that: The housing (2) has an L-shaped structure, with the horizontal part positioned above the lock body (1) and the vertical part positioned perpendicular to the lock body (1). The housing (2) is fixedly connected to the cover plate (10) by screw one (35), and the housing (2) is fixedly connected to the lock body (1) by screw two (36).

7. The integrated door lock for automobiles according to claim 1, characterized in that: It also includes a cover (3), which is fixedly sleeved on the housing (2). The cover (3) and the housing (2) are fixedly connected by screws (36). The cover (3) has a flip cover in the middle for opening and replacing the cable.

8. The integrated door lock for automobiles according to claim 1, characterized in that: The upper end of one side of the inner locking rocker arm (6) abuts against the spring of the micro switch (34) to achieve the output of the unlocking signal, the middle part is connected to the inner locking cable (16), and the lower end is connected to the outer locking linkage arm (5).

9. A one-piece door lock for automobiles according to claim 8, characterized in that: The straight rack of the inner locking rocker arm (6) meshes with the worm (32), the worm (32) is sleeved on the motor shaft of the motor (31), the motor (31) is mounted on the housing (2) and the connector, and is connected to the conductive plate (9), and the worm (32) is driven to rotate by the motor (31).

10. An integrated door lock for automobiles according to claim 9, characterized in that: It also includes an external locking rod (17), one end of which is provided with a straight rack, which meshes with an internal locking rocker arm (6), and the internal locking rocker arm (6) triggers a micro switch (34) through a rounded corner when it slides.

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