阅读说明：本技术 新型空间柔顺双支链构造的汽车门锁 (Novel automobile door lock with flexible space double-branched chain structure ) 是由 杭鲁滨 李苏龙 王明远 黄晓杰 吴柏锐 钟传磊 曲志洋 邓辉宇 郭辉 黄晓波 刘 于 2021-08-04 设计创作，主要内容包括：本发明属于汽车工程领域,公开了新型空间柔顺双支链构造的汽车门锁,汽车门锁内柔顺双支链,包含开启支链和保险支链；开启支链和保险支链都是由空间机构构造,通过在机构中安装扭簧组合成柔顺支链,构造了能适应多种工况的柔顺双支链；通过单电机驱动双联齿轮使开启支链和保险支链按期望时序协调动作分别实现门锁的电动开启和电动保险；开启支链中,不完全齿轮传动实现该门锁系统中两条支链按预定顺序先后动作,其与开启支链中部分机构在多工况间的复位。保险支链中,变轴心扭簧使双回路的保险支链具有两态特性。本发明首次以空间机构构造汽车门锁开启支链和保险支链,有效利用锁内狭小空间,可广泛应用于智能门锁及其他单输入多输出的传动机构。(The invention belongs to the field of automobile engineering, and discloses an automobile door lock with a novel space flexible double-branched-chain structure, wherein a flexible double-branched-chain in the automobile door lock comprises an opening branched chain and a safety branched chain; the opening branched chain and the safety branched chain are both constructed by space mechanisms, and a torsion spring is arranged in the mechanism to combine into a flexible branched chain, so that a flexible double branched chain which can adapt to various working conditions is constructed; the single motor drives the dual gears to enable the opening branched chain and the safety branched chain to coordinate to act according to expected time sequence to respectively realize electric opening and electric safety of the door lock; in the opening branched chain, incomplete gear transmission realizes that two branched chains in the door lock system act in sequence according to a preset sequence, and the two branched chains and a part of a mechanism in the opening branched chain reset among multiple working conditions. In the safety branched chain, the variable-axis torsion spring enables the safety branched chain of the double loop to have two-state characteristics. The invention constructs the automobile door lock opening branched chain and the safety branched chain by the space mechanism for the first time, effectively utilizes the narrow space in the lock, and can be widely applied to intelligent door locks and other single-input and multi-output transmission mechanisms.)

1. The novel automobile door lock with a flexible space double-branched-chain structure comprises a shell and a driving unit arranged in the shell, wherein the driving unit comprises a triple gear, a safety branched-chain and a door lock opening branched-chain which are respectively meshed with two gears in the triple gear, an unlocking turntable and a ratchet and pawl mechanism which are arranged on the shell in a resetting and rotating mode, the safety branched-chain comprises a safety push rod, the safety push rod enables the unlocking turntable and the ratchet and pawl mechanism to be connected in a clutching mode through movement, the triple gear can rotate along a preset direction so that the unlocking turntable can rotate through the door lock opening branched-chain, when the unlocking turntable is separated from the ratchet and pawl mechanism, the automobile door lock is in an upper safety state, the unlocking turntable is rotated, the automobile door lock cannot be unlocked through the ratchet and pawl mechanism, and when the unlocking turntable is matched with the ratchet and pawl mechanism through the safety push rod, the car door lock is in the state of relieving insurance, rotates the unblock carousel, the car door lock is unblanked through ratchet pawl mechanism, its characterized in that:

the door lock opening branched chain is a space mechanism and comprises a torque increasing assembly and a ball pair connecting assembly,

the torque multiplication assembly includes a torque multiplication crank rotatably disposed on the housing, the torque multiplication crank having an edge with meshing tooth segments,

the drive duplicate gear has a secondary worm gear and a non-full drive gear,

the secondary worm gear is meshed with the triple gear, the rotating radius of the incomplete driving gear is smaller than that of the torque increasing crank, partial tooth sections of the incomplete driving gear are in intermittent meshing fit with the meshed tooth sections, and therefore torque transmission is achieved,

the ball pair connecting assembly comprises a transverse pull rod and an unlocking pull rod which are connected in sequence,

one end of the transverse pull rod is hinged to the edge of the torque increasing crank, the other end of the transverse pull rod faces the unlocking rotary table, and two ends of the unlocking pull rod are connected to the other end of the transverse pull rod and the edge of the unlocking rotary table through ball pairs respectively.

2. The novel spatially compliant automotive door lock with a double branched chain configuration as claimed in claim 1, wherein:

wherein the torque increasing crank is resettable rotatably disposed on the housing via a torsion spring.

3. The novel spatially compliant automotive door lock with a double branched chain configuration as claimed in claim 1, wherein:

wherein the safety branched chain is a space mechanism, and also comprises a deflector rod unit and a safety unit,

the shifting lever unit comprises a safety gear and a safety shifting tooth which are meshed with the triple gear,

one end of the safety shifting tooth is arranged on the axis of the safety gear, the safety shifting tooth extends towards the radial direction of the safety gear,

the safety unit comprises a safety swing piece which is rotatably arranged on the shell and is positioned near the safety gear and a safety shifting fork arranged on the safety swing piece, the safety push rod is arranged on the edge of the safety swing piece,

when the safety gear drives the safety shifting teeth to rotate, the safety shifting teeth are interfered with the fork opening edges of the safety shifting forks to shift the shifting forks, so that the safety swinging pieces are driven to swing, and the safety push rods are further driven to move.

4. The novel spatially compliant automotive door lock with a double branched chain configuration as claimed in claim 3, wherein:

wherein the safety shifting fork is arranged along the direction of the rotation radius of the safety swinging piece,

the safety shifting fork is provided with a fixed end and a shifting end, the fixed end is arranged on the rotating axis of the safety swinging piece,

the end face of the toggle end has a fork opening, the concave direction of which points to the rotation axis of the safety swing element.

5. The novel spatially compliant automotive door lock with a double branched chain configuration as claimed in claim 4, wherein:

wherein the shortest distance between the axis of rotation of the safety swing member and the axis of the safety gear is taken as a safety interference distance,

taking the rest part of the end surface of the shifting end except the fork opening as an interference profile, taking the maximum concave distance of the fork opening of the safety shifting fork as the bottom of the fork opening,

the sum of the shortest distance from the rotation axis of the safety swinging piece to the interference profile and the length of the safety shifting tooth is larger than the safety interference distance,

the sum of the shortest distance from the rotating axis of the safety swinging piece to the bottom of the fork opening and the length of the safety shifting tooth is less than the safety interference distance,

the interference profile on one of the interference profiles on both sides of the fork opening in the rotation direction of the safety swing member is located directly above the safety gear.

6. The novel spatially compliant automotive door lock with a double branched chain configuration as claimed in claim 3, wherein:

wherein, the safety branched chain also comprises a manual safety component which comprises a manual safety crank and a safety connecting rod,

the manual safety crank is arranged on the shell in a resetting and rotating mode through a torsion spring, and two ends of the safety connecting rod are connected to the edge of the manual safety crank and the edge of the safety swinging piece through ball pairs respectively.

7. The novel spatially compliant automotive door lock with a double branched chain configuration as claimed in claim 3, wherein:

wherein, the triple gear has secondary worm and insurance drive gear, secondary worm with secondary worm wheel meshes, insurance drive gear with insurance gear meshes.

Technical Field

The invention belongs to the field of automobile engineering, and particularly relates to a novel automobile door lock with a flexible space double-branched-chain structure.

Background

The automobile door lock is a safety accessory installed in an automobile door, and an automobile door lock column and an automobile body are reliably locked through an internal mechanism of the automobile door lock.

In the aspect of research on electric unlocking of an automobile door lock, chinese patent CN 104895424 discloses a side door lock transmission mechanism capable of realizing electric unlocking, which is based on the principle that an electric unlocking system is installed in a door lock body, and a cam link mechanism is adopted to realize electric unlocking control of the door lock. Chinese patent CN 109930922 discloses a flexible link mechanism with variable degrees of freedom, which has multiple motion modes and reset features, and can realize an electric unlocking function in an automobile door lock, and the door lock has a single-drive double-branch link structure.

The space mechanism has the advantages of compact structure, small occupied effective space, capability of realizing complex motion and the like. Aiming at the problem that the conventional common automobile door lock is limited by a narrow space and does not have an electric opening function.

The existing electric unlocking automobile door lock transmission systems are roughly classified into the following two types: the single-motor single-branch chain has the advantages that only the opening branch chain is arranged in the door lock, and the safety branch chain is not arranged, so that the narrow space in the door lock is more limited and the safety of an automobile is reduced; the two motors in the door lock respectively drive the safety branched chain and the opening branched chain, so that the door lock has complete functions and stable performance, but the whole size of the door lock is larger, the manufacturing cost is increased, and in conclusion, the existing automobile door lock cannot give consideration to the reliability of the large torque transmission of the two branched chains and the miniaturization of the mechanism.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a novel automobile door lock with a flexible space double-branched-chain structure, wherein the flexible space double-branched-chain structure is constructed by a space mechanism and a torsion spring so as to be suitable for the door lock opening function and the safety function, so that the door lock can realize the working conditions of electric opening, electric safety ascending and electric safety descending only by a single motor, and the automobile door lock can consider the reliability of the large torque transmission of the double-branched-chain and the miniaturization of the mechanism.

In order to achieve the purpose, the invention provides the following technical scheme:

the novel automobile door lock with a flexible space double-branched-chain structure comprises a shell and a driving unit arranged in the shell, wherein the driving unit comprises a triple gear, a safety branched chain and a door lock opening branched chain which are respectively meshed with two gears in the triple gear, an unlocking turntable and a ratchet pawl mechanism which are arranged on the shell in a resetting and rotating mode, the safety branched chain comprises a safety push rod, the safety push rod can movably and detachably connect the unlocking turntable with the ratchet pawl mechanism, the triple gear can rotate along a preset direction to enable the unlocking turntable to rotate through the door lock opening branched chain, when the unlocking turntable is separated from the ratchet pawl mechanism, an automobile door lock is in an upper safety state, the unlocking turntable is rotated, the automobile door lock cannot be unlocked through the ratchet pawl mechanism, and when the unlocking turntable is matched with the ratchet pawl mechanism through the safety push rod, the automobile door lock is in an unlocking state, the unlocking turntable is rotated, the car door lock is unlocked through a ratchet and pawl mechanism, and is characterized in that: the door lock opening branched chain is a space mechanism and comprises a torque increasing assembly and a ball pair connecting assembly, the torque increasing assembly comprises a torque increasing crank and a driving duplicate gear, the torque increasing crank is rotatably arranged on the shell, the edge of the torque increasing crank is provided with a meshing tooth section, the driving duplicate gear is provided with a secondary worm gear and a non-complete driving gear, the secondary worm gear is meshed with the triple gear, the rotating radius of the incomplete driving gear is smaller than that of the torque increasing crank, the partial tooth section of the incomplete driving gear is intermittently meshed and matched with the meshing tooth section, thereby carry out the transmission of moment of torsion, ball pair coupling assembling is including the transverse pull rod and the unblock pull rod that connect gradually, and the articulated edge that sets up at moment of torsion increase crank of one end of transverse pull rod, and the other end sets up towards the unblock carousel, and the both ends of unblock pull rod are connected the other end of transverse pull rod and the edge of unblock carousel through the ball pair respectively.

Preferably, the torque amplifying crank is resettable rotatably on the housing by a torsion spring.

Preferably, insurance branched chain is space mechanism, still include driving lever unit and insurance unit, the driving lever unit includes dials the tooth with the insurance gear and the insurance of trigeminy gear engagement, the one end setting of tooth is dialled in the insurance is on the axis of insurance gear, the radial extension of tooth orientation insurance gear is dialled in the insurance, insurance unit is including rotationally setting up on the casing and being located the insurance oscillating piece and the insurance shift fork of setting on insurance oscillating piece of insurance near of insurance gear, the edge at insurance oscillating piece is set up to the insurance push rod, when insurance gear drives the insurance and dials the tooth and rotate, the insurance is dialled the tooth and is stirred the shift fork through interfering with the fork mouth edge of insurance shift fork, thereby drive insurance oscillating piece and swing, and then make the insurance push rod remove.

Furthermore, the safety shifting fork is arranged along the rotation radius direction of the safety swinging piece, the safety shifting fork is provided with a fixed end and a shifting end, the fixed end is arranged on the rotation axis of the safety swinging piece, the end surface of the shifting end is provided with a fork opening, and the concave direction of the fork opening points to the rotation axis of the safety swinging piece.

And the shortest distance between the rotation axis of the safety swing piece and the axis of the safety gear is used as a safety interference distance, the rest part of the end surface of the poking end except the fork opening is used as an interference profile, the maximum concave distance of the fork opening of the safety shifting fork is used as the bottom of the fork opening, the sum of the shortest distance between the rotation axis of the safety swing piece and the interference profile and the length of the safety shifting tooth is greater than the safety interference distance, the sum of the shortest distance between the rotation axis of the safety swing piece and the bottom of the fork opening and the length of the safety shifting tooth is less than the safety interference distance, and the interference profiles on one side of the interference profiles on the two sides of the fork opening respectively in the rotation direction of the safety swing piece are positioned right above the safety gear.

Still further, the insurance branched chain still includes manual insurance subassembly, and manual insurance subassembly includes manual insurance crank and insurance connecting rod, and manual insurance crank can reset rotationally setting on the casing through the torsional spring, and the both ends of insurance connecting rod are connected at the edge of manual insurance crank and the edge of insurance swinging member through the ball pair respectively.

Further, the triple gear has a secondary worm meshed with the secondary worm wheel and a safety drive gear meshed with the safety gear.

Compared with the prior art, the invention has the beneficial effects that:

1. because the rotation radius of the incomplete driving gear of the novel automobile door lock with the space-compliant double-branched-chain structure is smaller than that of the torque-increasing crank, the incomplete driving gear is in intermittent meshing fit with the meshing tooth section, one end of the transverse pull rod is hinged to the edge of the torque-increasing crank, the other end of the transverse pull rod faces the unlocking rotary table, two ends of the unlocking pull rod are respectively connected to the other end of the transverse pull rod and the edge of the unlocking rotary table through the ball pairs, when the torque-increasing crank transmits torque, the angular velocity is reduced to amplify the torque, the torque-increasing crank starts to rotate after the triple gear rotates for a preset time through the intermittent fit, and the triple gear inputs the torque to the safety branched chain in the preset time, so that the automobile door lock safety is opened through the safety branched chain before the door lock is opened, therefore, the automobile door lock safety can be opened electrically only by a single motor, The electric upper insurance and the electric lower insurance work condition ensure that the automobile door lock can give consideration to the reliability of the double-branched-chain large torque transmission and the miniaturization of the mechanism.

2. The torque increasing crank is arranged on the shell in a resetting and rotating mode through the torsion spring, so that after each electric unlocking, the torque increasing crank can reset and rotate to an initial position for the next use, and the unlocking pull rod can buffer the impact force of the unlocking turntable caused by the reverse torque which is output to the door lock opening branched chain from the safety branched chain in the upper safety process through the space arching through the ball pair connection, so that the impact of the reverse torque on related mechanisms is avoided, and the service life of the related mechanisms is greatly prolonged.

3. Because the manual safety crank is arranged on the shell in a resetting and rotating mode through the torsion spring, and the two ends of the safety connecting rod are connected to the free end of the manual safety crank and the edge of the safety swinging piece through the ball pairs respectively, the joint bearing can complete the aligning motion of the two ends of the safety connecting rod in the manual safety-up or safety-down process, namely the two ends of the safety connecting rod can smoothly rotate.

Drawings

FIG. 1 is a schematic view of a novel spatially compliant automotive door latch with a double branched chain configuration in accordance with an embodiment of the present invention;

FIG. 2 is a first schematic view of a door lock opening chain and a safety chain according to an embodiment of the present invention;

FIG. 3 is a second schematic diagram of a door lock opening chain and a safety chain according to an embodiment of the present invention;

FIG. 4 is a schematic view of a door lock opening chain according to an embodiment of the present invention;

FIG. 5 is a schematic view of a safety chain according to an embodiment of the present invention;

FIG. 6 is a schematic view of a novel spatially compliant dual branched chain configured automotive door lock during a arming process of an embodiment of the present invention; and

fig. 7 is a schematic view of a swept space straight line of an unlocking pull rod when a door lock is unlocked electrically according to an embodiment of the invention.

In the figure: 100. the novel automobile door lock with a space flexible double-branched-chain structure comprises a triple gear A, a triple gear A1, a secondary worm, a2, a safety driving gear B, an unlocking turntable C, a ratchet-pawl mechanism 10, a door lock opening branched chain 11, a torque increasing assembly 111, a torque increasing crank 1111, a meshing tooth section 112, a driving double-gear 1121, a secondary worm wheel 1122, a non-complete driving gear 12, a ball pair connecting assembly 121, a transverse pull rod 122, an unlocking pull rod 20, a safety branched chain 21, a shift lever unit 211, a safety gear 212, a safety shift tooth 22, a safety unit 221, a safety swing piece 222, a safety shift fork 2221, a fixed end 2222, a shifting end 22221, a fork opening 22222, an interference molded surface 23, a manual safety assembly 231, a manual safety crank 232, a safety connecting rod 24 and a safety push rod.

Detailed Description

In order to make the technical means, the creation features, the achievement objects and the effects of the present invention easy to understand, the following embodiments are specifically described in the following with reference to the accompanying drawings, and it is to be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.

As shown in fig. 1-3, the novel automotive door lock 100 with a flexible space and a double branched chain structure in this embodiment includes a housing (not shown in the drawings) and a driving unit disposed in the housing, where the driving unit includes a triple gear a, a safety branched chain 20 and a door lock opening branched chain 10 that are respectively engaged with two gears in the triple gear a, an unlocking dial B disposed on the housing in a resettable and rotatable manner, and a ratchet and pawl mechanism C.

The triple gear a has a secondary worm a1 and a safety drive gear a2, the secondary worm a1 being coupled to the door lock opening branch 10 and the safety drive gear a2 being coupled to the safety branch 20.

The safety chain 20 comprises a safety push rod 24, and the safety push rod 24 can be moved to connect the unlocking turntable B with the ratchet-pawl mechanism C in a clutchable manner.

The triple gear A can rotate along a preset direction, so that the unlocking rotary disc B rotates through the door lock opening branched chain 10, when the unlocking rotary disc B is separated from the ratchet pawl mechanism C, the door lock is in an upper safety state, the unlocking rotary disc B rotates, the door lock cannot be unlocked through the ratchet pawl mechanism C, when the unlocking rotary disc B is matched with the ratchet pawl mechanism C through the safety push rod 24, the door lock is in an unlocking state, the unlocking rotary disc B rotates, and the door lock is unlocked through the ratchet pawl mechanism C.

As shown in fig. 1 to 4, the door lock opening branched chain 10 is a space mechanism, and includes a torque increasing assembly 11 and a ball pair connecting assembly 12 coupled to each other.

The torque multiplier assembly 11 includes a torque multiplier crank 111 and a drive duplicate gear 112.

The drive duplicate gear 112 has a secondary worm gear 1121 and a non-full drive gear 1122,

the secondary worm wheel 1121 is engaged with a secondary worm a1, and when a driving motor (not shown in the drawings) drives the triple gear a to rotate, the secondary worm a1 transmits torque to the secondary worm wheel 1121, and in the embodiment, the secondary worm wheel 1121 and the secondary worm a1 are both helical teeth and perpendicular to each other.

The torque amplifying crank 111 is provided on the housing to be resettable rotatably by a torsion spring, the torque amplifying crank 111 has a mesh tooth section 1111 at an edge thereof, and a rotation radius of the incomplete drive gear 1122 is smaller than that of the torque amplifying crank 111, and a partial tooth section of the incomplete drive gear 1122 is intermittently mesh-engaged with the mesh tooth section 1111 to transmit torque, and when the automobile door lock is in an initial state, the partial tooth section of the incomplete drive gear 1122 is not mesh with the mesh tooth section 1111, and when the secondary worm wheel 1121 rotates for a predetermined time from an initial position, the partial tooth section of the incomplete drive gear 1122 starts to mesh with the mesh tooth section 1111, and when the drive dual gear 112 does not output torque, the torque amplifying crank 111 is reset back to the initial position.

The ball joint assembly 12 includes a cross tie 121 and an unlocking tie 122 connected in series.

One end of the transverse pull rod 121 is hinged to the edge of the torque increasing crank 111, the other end of the transverse pull rod is arranged towards the unlocking turntable B, two ends of the unlocking pull rod 122 are connected to the other end of the transverse pull rod 121 and the edge of the unlocking turntable B through ball pairs respectively, specifically, the transverse pull rod 121 is hinged to the torque increasing crank 111, and two ends of the unlocking pull rod 122 are connected to the other end of the transverse pull rod 121 and the edge of the unlocking turntable B through joint bearings.

That is, the transverse pull rod 121 and the torque increasing crank 111 form a rotation pair (R pair), the unlocking pull rod 122 and the transverse pull rod 121 form a ball pair (S pair), and the unlocking pull rod 122 and the unlocking turntable B form a ball pair (S pair), so that the torque increasing crank 111 is connected with the unlocking turntable B through an RSS mechanism.

As shown in fig. 1-3 and 5, the safety chain 20 is a space mechanism, and further includes a lever unit 21, a safety unit 22, and a manual safety assembly 23.

The lever unit 21 includes a safety gear 211 and a safety lever tooth 212.

The safety gear 211 is engaged with the safety driving gear a2, and when the triple gear a rotates, the safety driving gear a2 drives the safety gear 211 to rotate.

One end of the safety catch 212 is disposed on the axis of the safety gear 211, the safety catch 212 extends in the radial direction of the safety gear 211, and in the present embodiment, when the safety gear 211 rotates, the safety catch 212 rotates coaxially with the safety gear 211, and the free end of the safety catch 212 does not exceed the edge of the safety gear 211.

The securing unit 22 comprises a securing pendulum 221 and a securing fork 222.

The safety swing member 221 is rotatably disposed on the housing and located near the safety gear 211, one end of the safety push rod 24 is disposed at an edge of the safety swing member 221, and a rotation shaft of the safety swing member 221 and a rotation shaft of the safety gear 211 are parallel to each other.

The safety shifting fork 222 is arranged on the safety swing piece 221, when the safety gear 211 drives the safety shifting tooth 212 to rotate, the safety shifting fork 222 and the safety swing piece 221 rotate coaxially, the safety shifting tooth 212 shifts the safety shifting fork 211 through interfering with the edge of the fork opening of the safety shifting fork 222, so that the safety swing piece 221 is driven to swing, and the safety push rod 24 is driven to move.

Specifically, the safety fork 222 is disposed along the rotation radius direction of the safety swing member 221, the safety fork 222 has a fixed end 2221 and a shifting end 2222, the fixed end 2221 is disposed on the rotation axis of the safety swing member 221, the end surface of the shifting end 2222 has a fork 22221, and the recessed direction of the fork 22221 is directed to the rotation axis of the safety swing member 221.

The shortest distance between the rotation axis of the safety swing member 221 and the axis of the safety gear 211 is taken as a safety interference distance, the rest part of the end surface of the shifting end 2222 except the fork 22221 is taken as an interference profile 22222, the maximum recessed distance of the fork 22221 of the safety fork 222 is taken as a fork bottom, the sum of the shortest distance between the rotation axis of the safety swing member 221 and the interference profile 22222 and the length of the safety shifting tooth 212 is greater than the safety interference distance, the sum of the shortest distance between the rotation axis of the safety swing member 221 and the fork bottom and the length of the safety shifting tooth 212 is less than the safety interference distance, and the interference profile 22222 on one side of the interference profiles 22222 respectively positioned on both sides of the fork 22221 in the rotation direction of the safety swing member 221 is positioned directly above the safety gear 211, the interference profile 22222 on the other side is positioned above the outer side of the safety gear, at least a part of the fork 22221 is positioned directly above the safety gear 211, when the safety shifting tooth 212 rotates, the safety shifting tooth does not interfere with the interference profile 22222 on one side and enters the fork opening 22222, and in the process of continuing to rotate, the safety shifting tooth 211 is shifted to swing by interfering with the inner wall of the fork opening 22222 and interfering with the edge of the fork opening 22222, and the safety gear 211 rotates in two opposite directions, so that the safety push rod 24 can separate or connect the unlocking turntable B and the ratchet and pawl mechanism C, and the automobile door lock is subjected to safety locking or safety unlocking.

As shown in fig. 6, during the upper safety, the triple gear a drives the safety gear 211 in the reverse direction, so as to output a reverse torque to the torque boosting crank 111, and at this time, the RSS mechanism between the transverse link 121 and the unlocking link 122 buffers the impact force of the reverse torque on the unlocking dial B through the adaptive shape change of the spatial camber.

The manual safety assembly 23 includes a manual safety crank 231 and a safety link 232.

The manual safety crank 231 is rotatably arranged on the shell in a resettable manner through a torsion spring, two ends of the safety connecting rod 232 are respectively connected to the edge of the manual safety crank 231 and the edge of the safety swinging piece 221 through ball pairs, the automobile door lock can drive the safety swinging piece 221 to swing through rotating the manual safety crank 231, so that the operation of manually carrying out insurance installation or insurance removal on the automobile door lock is realized, the safety connecting rod 232 carries out centering motion in a three-dimensional space through the ball pairs at the two ends in the process, in the embodiment, two ends of the safety connecting rod 232 are respectively connected to the manual safety crank 231 and the safety swinging piece 221 through joint bearings, and the swinging plane of the safety swinging piece 221 is perpendicular to the rotating plane of the manual safety crank 231.

As shown in fig. 7, the swept space straight line of the unlocking rod 122 of the spatial mechanism door lock unlocking branched chain 10 in the process of electrically unlocking the door lock is schematically represented, and the form is determined by the rod length of the spatial closed loop mechanism of the door lock unlocking branched chain 10.

The form of the swept space ensures the compatibility of the door lock opening branched chain 10 with the movement of other branched chains in the lock; according to the swept space form indicated by the straight line of the unlocking pull rod 122 of the door lock opening branched chain 10 of the space mechanism, the lengths of all rods of a structural loop are optimized, the space in a door lock is effectively utilized, and the compatibility margin with the safety branched chain 20 and other manual opening branched chains is increased.

The above-described embodiments are preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and changes can be made by those skilled in the art without inventive work within the scope of the appended claims.