Integrated door lock for automobile

Abstract

The invention relates to the technical field of automobile door locks, in particular to an automobile integrated door lock 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 a locking connecting rod, so that the whole vehicle door lock is compact in structural layout, all parts are efficiently utilized, the transmission efficiency of the whole vehicle door lock is high, the control performance is good, and the service life of the vehicle 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] The present invention relates to the technical field of automobile door locks, and in particular to an integrated door lock for an automobile. Background Art

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

[0003] Existing car door locks are basically split structures, with the circuit part and the mechanical part separated. The locking or unlocking is achieved by connecting the pull rod of the electric actuator with the mechanical part of the lock body. If the relative installation position of the actuator and the lock body deviates or the parts are deformed, it will cause a series of unstable performances such as feedback signals, affecting user use. To this end, we propose an integrated door lock for automobiles. Summary of the invention

[0004] The purpose of the present invention is to provide an integrated door lock for a car, which can realize unlocking and locking functions in two ways. Both ways are ultimately transmitted to the same part, that is, the locking link, so that the entire door lock structure is compact, each component is efficiently utilized, the transmission efficiency of the entire door lock is high, and the control performance is good. It solves the problem that the relative installation position of the actuator and the lock body of the existing door lock, if there is a deviation or deformation of the parts, will cause a series of performance instability such as feedback signals, which affects user use.

[0005] The present invention provides the following technical solution: an integrated door lock for a vehicle, comprising a lock body subassembly and a housing subassembly;

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

[0007] The ratchet shaft and the pawl shaft pass through the lock body, and the ratchet and the pawl are arranged under the lock body; the pawl shaft is sleeved with a cover plate, a pawl, an outward opening rocker arm and a connecting plate from bottom to top, and the pawl shaft is fixed to the cover plate and the connecting plate by riveting; the ratchet shaft is sleeved with a cover plate, a ratchet return spring, a ratchet and a connecting plate from bottom to top, and the ratchet shaft is fixed to the cover plate and the connecting plate by riveting; the outward locking linkage arm and the outward opening rocker arm are arranged on the lock body, one end of the push rod is arranged on the outward locking linkage arm, and the other end is arranged on the outward opening rocker arm;

[0008] The housing subassembly is used to control the inner opening and closing, inner unlocking and locking of the door lock body, and the housing subassembly includes a housing, an outer opening rocker arm, and an outer locking linkage arm;

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

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

[0011] Preferably, it also includes an anti-mistake rocker arm, which is movably mounted on the inner locking rocker arm. When the vehicle door is opened, one end of the anti-mistake rocker arm presses against the ratchet so that the inner locking rocker arm cannot be locked. When the vehicle door is closed, one end of the anti-mistake rocker arm does not contact the ratchet and the inner locking rocker arm can be locked.

[0012] Preferably, it also includes a lock buckle shock-absorbing pad, which is fixedly sleeved on the middle part of the lock body, and is used to prevent the car door from impacting the lock body when the car door is closed.

[0013] Preferably, 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 shell is an L-shaped structure, the horizontal part is arranged above the lock body, and the vertical part is arranged perpendicular to the lock body. The shell and the cover plate are fixedly connected by screw one, and the shell and the lock body are fixedly connected by screw two.

[0015] Preferably, the shell cover is fixedly sleeved on the shell body, and the shell cover is fixedly connected to the shell body by screw 2. The middle part of the shell cover is provided with a flip cover for opening and replacing the cable.

[0016] Preferably, the upper end of one side of the inner locking rocker arm contacts the spring of the micro switch to realize the output of the 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 inner locking rocker arm is meshed with a worm, the worm is sleeved on the motor shaft of the motor, the motor is mounted on the housing and the connector, and is connected to the conductive plate, and the worm is driven to rotate by the motor.

[0018] Preferably, a spur rack is provided at one end of the outer locking rod, and the spur rack is engaged with the inner locking rocker arm. When the inner locking rocker arm slides, the micro switch is triggered by the rounded corner.

[0019] The present invention provides an integrated door lock for automobiles, which can realize unlocking and locking functions in two ways, namely, opening the lock cylinder by turning the car key, and electrically unlocking and locking, that is, by controlling the motor. Both methods are ultimately transmitted to the same part, that is, the locking link, so that the entire door lock structure is compact, each component is efficiently utilized, the transmission efficiency of the entire door lock is high, and the control performance is good. This technical solution also has an anti-mislocking function. When the door is open, the locking function is in an invalid state. Only when the door is closed can the locking be realized, the safety performance is high, and the actual operation is more humane. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the explosion of the door lock of the present invention;

[0021] Figure 2 The door lock body subassembly of the present invention;

[0022] Figure 3 The door lock housing subassembly of the present invention;

[0023] Figure 4 This is a schematic diagram of the inner opening mechanism of the door lock of the present invention;

[0024] Figure 5 This is a schematic diagram of the door lock outward opening mechanism of the present invention;

[0025] Figure 6 This is a schematic diagram of the assembly of the ratchet and pawl of the door lock of the present invention;

[0026] Figure 7 It is a schematic diagram of the door lock ratchet and pawl being half-locked and engaged in gear I of the present invention;

[0027] Figure 8 It is a schematic diagram of the door lock ratchet and pawl fully locked and engaged in gear II of the present invention;

[0028] Fig. 9 It is a schematic diagram of the door lock ratchet and pawl in the open state of engagement;

[0029] Fig.10 Schematic diagram of side A and side B of the ratchet wheel of the door lock of the present invention;

[0030] Fig.11 This is a schematic diagram of the C surface of the door lock pawl of the present invention;

[0031] Fig.12 It is a schematic diagram of the inner locking mechanism of the door lock of the present invention;

[0032] Fig.13 This is a schematic diagram of the unlocking mechanism inside the door lock of the present invention;

[0033] Fig.14 It is a schematic diagram of the outer locking mechanism of the door lock of the present invention;

[0034] Fig.15 This is a schematic diagram of the door lock external unlocking mechanism of the present invention;

[0035] Fig.16 This is a schematic diagram of the anti-mislocking mechanism of the door lock of the present invention;

[0036] Fig.17 This is a schematic diagram of the failure mechanism of the door lock anti-mislocking mechanism of the present invention;

[0037] Fig.18 Schematic diagram of the door lock unlocking signal output mechanism of the present invention.

[0038] In the figure: 1, lock body; 2, shell; 3, shell cover; 4, outer locking rocker arm; 5, outer locking linkage arm; 6, inner locking rocker arm; 7, outer opening joint; 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 rod; 18, outer opening rod; 19, fixing buckle; 20, ratchet Shaft; 21, pawl shaft; 22, external locking joint; 23, pawl; 24, connecting plate; 25, lock shock pad; 26, inner opening return spring; 27, pawl return spring; 28, outer opening return spring; 29, anti-misoperation rocker arm; 30, inner locking torsion spring; 31, motor; 32, worm; 33, pawl shock pad; 34, micro switch; 35, screw one; 36, screw two; 37, lock body sub-assembly; 38, shell sub-assembly. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figure 1-3 As shown, the present invention provides a technical solution: an integrated door lock for a car, comprising a lock body subassembly 37 and a housing subassembly 38;

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

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

[0043] The housing subassembly 38 is used to control the inner opening and closing, inner unlocking and locking of the door lock body 1. The housing subassembly 38 includes a housing 2, an outer opening rocker arm 11, and an outer locking linkage arm 5;

[0044] The inner opening part of the shell 2 is provided 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 the inner opening cable 15, and the other end is in contact with the outer opening rocker arm 11; the inner unlocking stop part of the shell 2 is provided 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 provided with an inner locking torsion spring 30 and an inner locking cable 16, and the other end is in contact with the outer locking linkage arm 5, and a micro switch 34 is provided on the conductive plate 9.

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

[0046] The push rod 13 is movably mounted on the outer locking linkage arm 5, and the other end is overlapped on 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 to open the door. When the door lock body 1 is locked, the head of the push rod 13 cannot contact the pawl 23 and the door is not opened.

[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 unlocking stops have a linkage effect.

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

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

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

[0051] When the outward-opening rocker arm 11 rotates and drives the outward-opening linkage arm to push the pawl 23 to rotate, the pawl 23 blocks the shaft and drives the pawl 23 to rotate, the pawl 23 is separated from the ratchet 14, and the ratchet 14 can rotate around the ratchet shaft 20, so that the lock is disengaged from the lock opening and the car door opens outwards.

[0052] The shell 2 is L-shaped, the horizontal part of the shell 2 is arranged above the lock body 1, and the vertical part is arranged perpendicular to the lock body 1. The shell 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 hexagon socket countersunk self-tapping screws; screw one 35 adopts ST2.9*13 hexagon socket countersunk self-tapping screws, and screw two 36 adopts ST2.9*16 flower-shaped pan head self-tapping screws.

[0053] The shell cover 3 is fixedly sleeved on the shell 2, and the shell cover 3 is fixedly connected to the shell 2 by ST2.9*16 flower-shaped pan head self-tapping screws. The middle part of the shell cover 3 is provided with a flip cover, which can be opened at any time to replace the cable, and each cable is fixed by a fixing buckle 19;

[0054] An inner locking rocker arm 6 is sleeved on the shell 2; the upper end of one side of the inner locking rocker arm 6 contacts the spring of the micro switch 34 to realize the output of the 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, and 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, and the straight rack of the inner locking rocker arm 6 is meshed with the worm 32; the worm 32 is sleeved on the motor shaft; the motor 31 is installed on the shell 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 32 is sleeved on the rotating shaft of the motor 31, and the worm 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 is engaged with the inner locking rocker arm 6 and triggers the unlocking signal switch through the rounded corner when the inner locking rocker arm 6 slides.

[0056] like Figure 4As shown, the inner opening function of the door lock is realized: when the inner lock of the door lock is in the unlocked state, the inner opening cable 15 linked to the inner door handle assembly is pulled, and the inner opening cable 15 drives the inner opening rocker arm 12 to rotate, and the inner opening rocker arm 12 drives the outer opening rocker arm 11 to rotate, and the outer opening rocker arm 11 moves together with the push rod 13, and the push rod 13 drives the pawl 23 to move, thereby releasing the engaged ratchet 14, and the ratchet 14 is reset by the ratchet return spring 8, thereby reaching the open state, and realizing the inner opening of the door lock.

[0057] After the door is closed, the lock buckle drives the ratchet 14 to rotate around the ratchet shaft 20, and the pawl 23 is reset by the pawl return spring 27, thereby generating engagement, so that the door is firmly and reliably in a closed state.

[0058] like Figure 5 As shown, the door lock external opening function is realized: when the door lock is in the unlocked state, the external opening rod 18 linked to the external door handle is pulled, and the external opening rod 18 drives the external opening rocker arm 11 to rotate through the external opening joint 7, and the external opening rocker arm 11 moves together with the push rod 13, and the push rod 13 drives the pawl 23 to move, thereby releasing the engaged ratchet 14, and the ratchet 14 is reset by the ratchet return spring 8, thereby reaching the open state, and realizing the internal opening of the door lock.

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

[0060] After the door is closed, the lock buckle drives the ratchet 14 to rotate around the ratchet shaft 20, and the pawl 23 is reset by the pawl return spring 27, thereby generating engagement, so that the door is firmly and reliably in a closed state.

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

[0062] like Figure 7As shown, the semi-locked state is achieved, and the door lock is in gear I: when the lock pushes the ratchet 14 to rotate around the ratchet shaft 20, the pawl 23 keeps side contact with the ratchet 14 under the action of the pawl return spring 27. When the lock stops pushing the ratchet 14 to rotate, the pawl 23 is reset under the action of the pawl return spring 27, so that the A surface of the ratchet 14 contacts the C surface of the pawl 23. At this time, the ratchet 14 is in a semi-locked state, and the door lock is in gear I. The A, B, and C surfaces are shown in FIG. Fig.10 and 11 shown.

[0063] like Figure 8 As shown, the fully locked state is achieved, and the door lock is in gear II: When the ratchet 14 is in the semi-locked state, the lock buckle continues to push the ratchet 14 to rotate around the ratchet shaft 20 to the maximum position, and the pawl 23 is reset under the action of the pawl return spring 27, so that the B surface of the ratchet 14 contacts the C surface of the pawl 23. At this time, the ratchet 14 is in the fully locked state, and the door lock is in gear II. Fig.10 and 11 shown.

[0064] like Fig. 9 As shown, the door lock is in the open state: when the ratchet 14 is in the fully locked state, the push rod 13 drives the pawl 23 to rotate around the pawl shaft 21, and the C surface of the pawl 23 is separated from the B surface of the ratchet 14. The ratchet 14 is reset under the action of the ratchet return spring 8, so that the ratchet 14 is in the open state and the door lock is opened. Fig.10 and 11 shown.

[0065] like Fig.12 As shown, the internal locking function of the mechanical door lock is realized: 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, and the internal locking cable 16 drives the internal locking rocker arm 6 to rotate, and 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 move to the locked position, and at the same time drives the push rod 13 to break away from the contact with the pawl 23, so that the push rod 13 driven by the external opening rocker arm 11 when it is opened and rotated cannot contact the pawl 23 to open the door lock, thereby realizing the locking of the door lock.

[0066] like Fig.13 As shown, the internal unlocking function of the mechanical door lock is realized: when the door lock is in the locked state, the internal locking button of the inner handle is rotated to pull the internal locking cable 16, and the internal locking cable 16 drives the internal locking rocker arm 6 to rotate, and 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 move to the unlocking position as shown in FIG. Fig.13 As shown, the push rod 13 is driven to contact the pawl 23 at the same time, so that the push rod 13 driven by the outward-opening rocker arm 11 when opening and rotating can contact the pawl 23 to open the door lock, thereby unlocking the door lock.

[0067] The locked state means that the mechanical parts cannot exert force on the pawl 23 and the state of the pawl 23 of the ratchet wheel 14 cannot be changed.

[0068] The unlocked state means that the mechanical parts can exert force on the pawl 23 , thereby changing the state of the pawl 23 of the ratchet wheel 14 .

[0069] like Fig.14 As shown, the external locking function of the door lock is realized: when the external locking of the door lock is in the unlocked state, the key rotates the lock core assembly, and the external locking rod 17 pulls the external locking rocker arm 4 through the external locking joint 22, and 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 break away from the contact with the pawl 23, so that the push rod 13 driven by the external opening rocker arm 11 when it is opened and rotated cannot contact the pawl 23 to open the door lock, thereby realizing the locking of the door lock.

[0070] like Fig.15 As shown, the door lock external unlocking function is realized: when the door lock is in the locked state, the key rotates the lock core assembly, and the external locking rod 17 pulls the external locking rocker arm 4 through the external locking joint 22, and 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 break away from the contact with the pawl 23, so that the push rod 13 driven by the external opening rocker arm 11 when it is opened and rotated can contact the pawl 23 to open the door lock, thereby realizing the door lock unlocking.

[0071] like Fig.16 As shown, the anti-mistake rocker arm 29 is mounted on the inner locking rocker arm 6 and moves with the rotation of the inner locking rocker arm 6. When the vehicle door is opened, that is, the ratchet 14 is in the open state, the inner locking rocker arm 6 is in the process of changing from the unlocking position to the locking position. The anti-mistake rocker arm 29 contacts the ratchet 14, and the anti-mistake rocker arm 29 cannot move downward, resulting in the inner locking rocker arm 6 being unable to return to the locking position.

[0072] like Fig.17 As shown, the anti-mistake rocker arm 29 is mounted on the inner locking rocker arm 6 and moves with the rotation of the inner locking rocker arm 6. When the vehicle door is closed, that is, the ratchet 14 is in a closed state, the inner locking rocker arm 6 is in the process of changing from an unlocked position to a locked position. The anti-mistake rocker arm 29 does not contact the ratchet 14, and the anti-mistake rocker arm 29 can move downward, and the inner locking rocker arm 6 can return to the locked position normally.

[0073] like Fig.18 As shown, a conductive plate 9 is arranged on the vertical surface of the housing 2 from top to bottom, and a micro switch 34 is arranged on the mounting seat of the conductive plate 9. The spring piece 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] 1. Working principle of the outward opening function of the technical solution: The outward opening function is to pull the outward opening rod 18 linked to the outside door handle, and the outward opening rod 18 pushes the outward opening rocker arm 11 to rotate along the mounting column of the lock body 1, driving the push rod 13 on the outward opening rocker arm 11 to move, and the push rod 13 pushes the pawl 23 to move, so that the meshed ratchet 14 is released, and the ratchet 14 is reset by the ratchet return spring 8, so as to open the door. After closing the door, the lock buckle drives the ratchet 14 to rotate around the ratchet shaft 20, and the pawl 23 is reset by the ratchet return spring 27, so as to produce meshing, so that the door is firmly and reliably in a closed state.

[0077] 2. Working principle of the inner door opening function of the technical solution: The inner door opening function is to pull the inner door handle assembly to link the inner opening cable 15, which drives the inner opening rocker arm 12 to rotate, and the inner opening rocker arm 12 drives the outer opening rocker arm 11 to rotate, and at the same time drives the push rod 13 on the outer opening rocker arm 11 to move, and the push rod 13 pushes the pawl 23 to move, so that the meshed ratchet 14 is released, and the ratchet 14 is reset by the ratchet return spring 8, so as to open the door. After closing the door, the lock drives the ratchet 14 to rotate around the ratchet shaft 20, and the ratchet 23 is reset by the ratchet return spring 27, so as to produce meshing, so that the door is firmly and reliably in a closed state.

[0078] 3. Working principle of locking and unlocking of the technical solution: The external locking and unlocking functions are realized by connecting the external locking rocker arm 4 on the door lock core assembly and the lock body 1 through the external locking rod 17. When the lock core assembly is turned by the key, the external locking rod 17 drives the external locking rocker arm 4 to move, and 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 or contact the pawl 23. When the push rod 13 contacts the pawl 23, the door lock is unlocked, and when the push rod 13 disengages from the pawl 23, the door lock is locked.

[0079] The inner locking and inner unlocking functions are realized by connecting the inner locking button on the inner handle assembly with the inner locking rocker arm 6 through the inner locking cable 16. When the inner locking button is pressed, the inner locking cable 16 pushes the inner locking rocker arm 6 to rotate, the inner locking rocker arm 6 links the outer locking linkage arm 5, and the outer locking linkage arm 5 drives the push rod 13 on the outer locking rocker arm 4 to break away from the contact with the pawl 23, thereby realizing the locking of the door lock. When the inner locking button is turned on, the inner locking button pulls the inner locking rocker arm 6 to rotate, the inner locking rocker arm 6 links the outer locking linkage arm 5, and the outer locking linkage arm 5 drives the push rod 13 on the outer locking rocker arm 4 to contact with the pawl 23, thereby realizing the unlocking of the door lock.

[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 32 to rotate. The tooth shape of the worm 32 meshes with the tooth shape 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] 4. The working principle of the anti-mislocking function of the present technical solution: the anti-mislocking rocker arm 29 is sleeved on the inner locking rocker arm 6, and moves downward with the rotation of the inner locking rocker arm 6. When the car door is opened, that is, the ratchet 14 is in the open state, the inner locking rocker arm 6 is in the process of changing from the unlocking position to the locking position. The anti-mislocking rocker arm 29 contacts the ratchet 14, and the anti-mislocking rocker arm 29 cannot move downward, resulting in the inner locking rocker arm 6 being unable to return to the locking position, thereby realizing the anti-mislocking function of the door lock body 1.

[0082] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An integrated door lock for a car, characterized in that: It comprises a lock body subassembly (37) and a housing subassembly (38); The lock body subassembly (37) is used to control the external opening and closing, external unlocking and locking of the door lock body (1), and the lock body subassembly (37) comprises a lock body (1), a ratchet shaft (20), a pawl shaft (21), a ratchet wheel (14), a pawl (23), an external locking linkage arm (5), an external opening rocker arm (11) and a push rod (13); The ratchet shaft (20) and the pawl shaft (21) penetrate the lock body (1), and the ratchet (14) and the pawl (23) are arranged below the lock body (1); the pawl shaft (21) is sleeved with a cover plate (10), a pawl (23), an outward-opening rocker arm (11) and a connecting plate (24) from bottom to top, and the pawl shaft (21) is fixed to the cover plate (10) and the connecting plate (24) by riveting; the ratchet shaft (20) is sleeved with a cover plate (10), a ratchet return spring (8), a ratchet (14) and a connecting plate (24) from bottom to top, and the ratchet shaft (20) is fixed to the cover plate (10) and the connecting plate (24) by riveting; the outward-locking linkage arm (5) and the outward-opening rocker arm (11) are arranged above the lock body (1), and one end of the push rod (13) is arranged on the outward-locking linkage arm (5), and the other end is arranged on the outward-opening rocker arm (11); The housing subassembly (38) is used to control the inner opening and closing, inner unlocking and locking of the door lock body (1), and the housing subassembly (38) comprises a housing (2), an outer opening rocker arm (11), and an outer locking linkage arm (5); The inner opening part of the housing (2) is sleeved 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 the inner opening cable (15), and the other end is in contact with the outer opening rocker arm (11); the inner unlocking stop part of the housing (2) is sleeved 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 sleeved with an inner locking torsion spring (30) and an inner locking cable (16), and the other end is in contact with the outer locking linkage arm (5); and a micro switch (34) is sleeved on the conductive plate (9).

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

3. The integrated door lock for automobile according to claim 1, characterized in that: The invention also comprises an anti-misoperation rocker arm (29), wherein the anti-misoperation rocker arm (29) is movably sleeved on the inner locking rocker arm (6); when the vehicle door is opened, one end of the anti-misoperation rocker arm (29) abuts against the ratchet wheel (14), so that the inner locking rocker arm (6) cannot be locked; when the vehicle door is closed, one end of the anti-misoperation rocker arm (29) does not contact the ratchet wheel (14), so that the inner locking rocker arm (6) can be locked.

4. The integrated door lock for automobile according to claim 1, characterized in that: It also comprises a lock buckle shock-absorbing pad (25), which is fixedly sleeved on the middle part of the lock body (1), and the lock buckle shock-absorbing pad (25) is used to prevent the vehicle door from impacting the lock body (1) when the vehicle door is closed.

5. The integrated door lock for automobile according to claim 1, characterized in that: The two ends of the connecting plate (24) are respectively fixedly connected to the pawl shaft (21) and the ratchet shaft (20), and 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 automobile according to claim 1, characterized in that: The shell (2) is an L-shaped structure, the horizontal part is arranged above the lock body (1), and the vertical part is arranged perpendicular to the lock body (1); the shell (2) and the cover plate (10) are fixedly connected by screw one (35), and the shell (2) and the lock body (1) are fixedly connected by screw two (36).

7. The integrated door lock for automobile according to claim 1, characterized in that: The shell cover (3) is fixedly sleeved on the shell body (2), and the shell cover (3) is fixedly connected to the shell body (2) by screw 2 (36). The middle part of the shell cover (3) is provided with a flip cover for opening and replacing the cable.

8. The integrated door lock for automobile according to claim 1, characterized in that: The upper end of one side of the inner locking rocker arm (6) contacts the spring of the micro switch (34) to output an 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. The integrated door lock for automobile according to claim 8, characterized in that: The straight rack of the inner locking rocker arm (6) is meshed with a 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. The integrated door lock for automobile according to claim 9, characterized in that: A spur rack is provided at one end of the outer locking rod (17), and the spur rack is meshed with the inner locking rocker arm (6). When the inner locking rocker arm (6) slides, the micro switch (34) is triggered through the rounded corner.

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