Electric safety locking and unlocking mechanism of automobile side door lock

Abstract

The utility model discloses an electric safety locking and unlocking mechanism of an automobile side door lock. The electric safety locking and unlocking mechanism comprises a motor, a worm on a motor shaft and a worm gear meshed with the worm. A central locking rod is arranged on the support in a sliding fit mode, and the support and the central locking rod are provided with elastic structures for limiting the central locking rod at the safety loading position or the safety unloading position. A release plate is in stirring connection with a coupling rod which is rotationally matched with the central locking rod; the release device further comprises a release plate return spring and a coupling rod return spring; a stirring structure is arranged on the worm gear and the central locking rod, and a motor drives the worm gear to rotate through a worm so as to stir the central locking rod to an upper insurance position or an unlocking position; and the central locking rod is positioned at the unlocking position: the shifting end of the releasing plate is positioned at a position which is transversely overlapped with the free end of the coupling rod and can shift the coupling rod and unlock. The electric safety locking and unlocking mechanism of the automobile side door lock is flexible, stable and reliable in transmission in the safety locking and unlocking processes and relatively low in cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile door lock, specifically to an electric locking and unlocking mechanism of automobile side door lock. BACKGROUND

[0002] The electric locking and unlocking mechanism of automobile side door lock in prior art is a very mature technology.

[0003] But there are still the following deficiencies in the actual use process:

[0004] 1. The locking and unlocking process of the locking assembly of the electric locking and unlocking mechanism of automobile side door lock in prior art is rotary motion, which is prone to mutual jamming between parts, and the flexibility, reliability, stability and transmission efficiency of transmission need to be improved. 2. The electric locking and unlocking mechanism of automobile side door lock in prior art has many parts, the structure is relatively complex, the assembly is relatively cumbersome, the assembly efficiency is relatively low, the material cost and manual assembly cost are relatively high, and the market price competition advantage is not obvious. INVENTION CONTENTS

[0005] The utility model solves the technical problem to provide an electric locking and unlocking mechanism of automobile side door lock, which is flexible, stable and reliable in locking and unlocking process, and has relatively low cost.

[0006] The technical solution of the utility model is to provide an electric locking and unlocking mechanism of automobile side door lock, which comprises a motor, a worm on the motor shaft and a worm gear meshing with the worm.

[0007] A central locking rod is slidingly fitted on the support, and the support and the central locking rod have elastic structures limiting the central locking rod at the locking position or the unlocking position;

[0008] A release plate is connected with a coupling rod rotatingly fitted on the central locking rod; the electric locking and unlocking mechanism of automobile side door lock further comprises a release plate return spring and a coupling rod return spring.

[0009] The worm gear and the central locking rod have a driving structure, and the motor drives the worm gear to rotate and drives the central locking rod to the locking position or the unlocking position.

[0010] The central locking rod is located at the locking position, one end of the central locking rod is located at a predetermined position of one end of the support, and the driving end of the release plate is located at a position away from the free end of the coupling rod, so that the coupling rod cannot be driven.

[0011] The central locking rod is located at the unlocking position, i.e. the other end of the central locking rod is located at the predetermined position of the other end of the support, and the pushing end of the release plate is located at the position transversely overlapping with the free end of the coupling rod to push the coupling rod.

[0012] With the above structure, the electric locking and unlocking mechanism of the automobile side door lock has the following advantages:

[0013] The central locking rod is designed ingeniously, which changes the structure of the existing automobile side door lock locking and unlocking mechanism that is rotated and operated, and adopts the central locking rod that is slidably matched on the support, i.e. the central locking rod is slid linearly, the support and the central locking rod have elastic structures that limit the central locking rod at the locking position or the unlocking position, the electrically driven linearly moving central locking rod basically eliminates the jamming phenomenon, and the flexibility, stability, reliability and transmission efficiency of the sliding locking process or the sliding unlocking process are greatly improved.

[0014] The electric locking and unlocking mechanism of the automobile side door lock has relatively reduced parts and relatively simple structure, the difficulty of the slidable central locking rod and other parts in cooperation is obviously reduced, the assembly process is relatively convenient and fast, the assembly efficiency is greatly improved, the material cost and the labor assembly cost are greatly saved, and the market price competition advantage is obvious.

[0015] Further, the support has a pin column protruding from the surface of the central locking rod at each end, and the central locking rod has a first long hole at each end for linear sliding along the pin column to slide the central locking rod to the locking position or the unlocking position. With the above structure, the flexibility, stability and reliability of the central locking rod relative to the surface of the support are further ensured, the structure of the sliding cooperation of the central locking rod and the support is simple, and the central locking rod can be accurately, stably and reliably located at the locking position or the unlocking position within the predetermined stroke.

[0016] Further, the pin post near the motor end and the elastic structure are indirectly arranged on the support: an electric appliance pin seat is fixed on the support, the pin post at the end is fixed on the electric appliance pin seat, a central locking rod limiting torsion spring body is sleeved on the torsion spring post fixed on the electric appliance pin seat, one end of the central locking rod limiting torsion spring is clamped in the clamping groove of the electric appliance pin seat, and the other end of the central locking rod limiting torsion spring is clamped in the first clamping groove of the end of the central locking rod, which is used for locating the central locking rod in the upper insurance position or the second clamping groove, which is used for locating the central locking rod in the unlocking position. After the above structure is used, the pin post and the elastic structure such as the central locking rod limiting torsion spring that need to be installed on the support are all installed on the electric appliance pin seat fixed on the support, the original structure is effectively utilized, the installation space is relatively saved, the structure of the electric unlocking and insurance mechanism of the automobile side door lock is more compact, and the elastic structure adopts the above specific central locking rod limiting torsion spring clamping structure, which is simple, stable and reliable.

[0017] Further, the middle part of the long strip plate part of a hook-shaped release plate is rotationally fitted on a shaft fixed on the support, the free end of the hook plate part of the release plate is a pushing end for pushing the coupling rod, the hook plate part is a part that can be pushed by the outer unlocking assembly of the automobile side door lock, and the long strip plate part is a part that can be pushed by the inner unlocking assembly of the automobile side door lock; the release plate return spring is a release plate return torsion spring, the torsion spring body of the release plate return torsion spring is sleeved on a shaft, one end of the release plate return torsion spring is clamped on a torsion spring clamping block fixed on the long strip plate part of the release plate, and the other end of the release plate return torsion spring is clamped on the support. After the above structure is used, the release plate is designed ingeniously, when the central locking rod is located in the unlocking position, the pushing end of the release plate is aligned with the free end of the coupling rod, so that the coupling rod is smoothly, flexibly and labor-saving pushed to unlock, when the central locking rod is located in the upper insurance position, the pushing end of the release plate is misaligned or spaced from the coupling rod, so that the coupling rod cannot be pushed to unlock, the stability and reliability of the upper insurance and unlocking are very strong.

[0018] Further, the structure that the coupling rod is rotatably fitted on the central locking rod is that the central locking rod has a hollow for accommodating the cylindrical part of the coupling rod, the hollow has a U-shaped plate extending inward, the coupling rod is clamped on the U-shaped plate by the limiting slot formed by the two clamping jaws and the coupling rod body and is axially limited, and the coupling rod is rotatably fitted on the U-shaped plate. The coupling rod return spring is a coupling rod return torsion spring, the torsion spring body of the coupling rod return torsion spring is sleeved on the cylindrical part of the coupling rod, one end of the coupling rod return torsion spring is clamped in the clamping hook protruding from the upper surface of the central locking rod, and the other end of the coupling rod return torsion spring is clamped in the clamping hook protruding from the surface of the central locking rod of the coupling rod actuating end. After the above structure is adopted, the rotatable fitting of the coupling rod and the central locking rod and the automatic return of the coupling rod after unlocking are more flexible, stable and reliable, and the stability and reliability of the situation that the lock cannot be unlocked after the lock is armed and the lock can be smoothly, quickly and flexibly unlocked after the lock is disarmed are further improved.

[0019] Further, the actuating structure on the worm wheel and the central locking rod is that the worm wheel has an actuating pin protruding towards the central locking rod, and the central locking rod has an actuating pin groove for accommodating the actuating pin. After the above specific structure is adopted for the actuating structure of the worm wheel on the central locking rod, the actuating structure is simple, flexible, labor-saving, stable and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic structural view of an optimal embodiment of a side door lock of an automobile to which the electric arming and disarming mechanism of the utility model is mounted.

[0021] Figure 2 is a schematic structural view of an optimal embodiment of the electric arming and disarming mechanism of the side door lock of the utility model, in which the L-shaped cover is omitted and the central locking rod is located at the arming position.

[0022] Figure 3 is Figure 2 is a schematic structural view of the optimal embodiment of the electric arming and disarming mechanism of the side door lock of the utility model, in which the L-shaped cover is omitted and the central locking rod is located at the disarming position.

[0023] Figure 4 is a schematic structural view of an optimal embodiment of the electric arming and disarming mechanism of the side door lock of the utility model, in which the L-shaped cover is omitted and the central locking rod is located at the arming position.

[0024] Figure 5 is Figure 4 is a schematic structural view of the optimal embodiment of the electric arming and disarming mechanism of the side door lock of the utility model, in which the L-shaped cover is omitted and the central locking rod is located at the disarming position.

[0025] Figure 6 is a diagram of the positions and connection relationships of parts for unlocking by using an inner pull plate in an inner opening assembly of a car door lock.

[0026] Figure 7 It is the position and connection relation diagram of the position and connection relation between the unlocking parts of the outer pull plate in the outer opening assembly of the automobile door lock.

[0027] Figure 8 It is the enlarged structure schematic diagram of the central locking rod in the utility model Figure 1 .

[0028] Figure 9 It is the enlarged structure schematic diagram of the central locking rod in the utility model Figure 2 .

[0029] Figure 10 It is the enlarged structure schematic diagram of the central locking rod limiting torsion spring in the utility model

[0030] Figure 11 It is the enlarged structure schematic diagram of the release plate in the utility model.

[0031] Figure 12 It is the enlarged structure schematic diagram of the coupling rod in the utility model Figure 1 .

[0032] Figure 13 It is the enlarged structure schematic diagram of the coupling rod in the utility model Figure 2 .

[0033] As shown in the figure:

[0034] 1, shell, 11, support, 111, first pin column, 12, rear cover, 13, L-shaped cover, 131, front cover, 132, upper cover, 133, insertion cylinder;

[0035] 21, motor, 22, worm, 23, worm wheel, 231, push pin, 24, worm shaft;

[0036] 31, central locking rod, 311, first long-shaped through hole, 312, first clamping groove, 313, second clamping groove, 314, push pin groove, 315, hollow, 3151, U-shaped plate, 3152, position for the rotation of the coupling rod, 3153, assembly through hole, 316, clamping hook, 32, central locking rod limiting torsion spring;

[0037] 41, release plate, 411, push end, 412, long strip plate part, 413, bent hook plate part, 414, torsion spring clamping block, 42, release plate reset torsion spring;

[0038] 51, coupling rod, 511, cylindrical part, 5111, axial limiting block, 512, clamping claw, 513, coupling rod body, 514, limiting groove, 515, clamping hook, 516, free end, 5161, arc-shaped push block;

[0039] 61, the electric appliance pin seat, 611, the second pin column, 612, the torsion spring column, 613, the clamping groove.

[0040] 71, the outer pull plate, 72, the inner pull plate, 73, the clamping plate, 74, the pawl linkage block, 75, the pawl. DETAILED DESCRIPTION

[0041] The specific embodiments of the present application will be further described below with reference to the drawings. It should be stated here that the description of these specific embodiments is used to help understand the present application, but does not constitute a limitation on the present application. In addition, the technical features involved in each of the specific embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0042] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 And Figure 13 as shown.

[0043] The shell 1 of the automobile side door lock can include a support 11, one side of the support 11 has a bottom plate, the other side of the support 11 has an L-shaped cover 13 integrated with the front cover 131 and the upper cover 132, one corner of the L-shaped cover 13 also has a plug barrel 133 for inserting an electric appliance plug, and the shell 1 further includes a rear cover 12 connected with part of the support 11 and the front cover 131.

[0044] The electrically powered arming and disarming mechanism of the automobile side door lock of the present application can also be an electrically powered arming mechanism and an electrically powered disarming mechanism of the automobile side door lock. The preferred embodiment of the electrically powered arming and disarming mechanism of the automobile side door lock of the present application comprises a motor 21, a worm 22 on the motor shaft, and a worm gear 23 engaged with the worm 22. The motor 21 can be fixed on the support 11, and the worm gear 23 can be rotatably matched with the worm gear shaft 24 fixed on the support 11. The motor 21 can be electrically connected with the BCM (Body Control Module) of the automobile, which can control the motor 21 to rotate forward and reverse, of course, the forward rotation or reverse rotation of the motor 21 is not in the same time period.

[0045] The above is the prior art.

[0046] The invention point of the electrically powered arming and disarming mechanism of the automobile side door lock of the present application is as follows.

[0047] A central locking rod 31 is slidingly fitted on the support 11, and the support 11 and the central locking rod 31 have elastic structures for limiting the central locking rod 31 in the upper locking position or the unlocking position.

[0048] A release plate 41 is connected with a coupling rod 51 rotatingly fitted on the central locking rod 31. The preferred embodiment of the electric locking and unlocking mechanism of the automobile side door lock also comprises a release plate return spring and a coupling rod return spring.

[0049] The worm gear 23 and the central locking rod 31 have a pushing structure for pushing the central locking rod 31 to the upper locking position or the unlocking position by the motor 21 driving the worm gear 23 to rotate through the worm 22.

[0050] Referring to Figure 2 , Figure 4 and Figure 8 , the central locking rod 31 in the upper locking position can be that one end, such as the left end, of the central locking rod 31 is located at a predetermined position of one end, such as the left end, of the support 11, and the pushing end 411 of the release plate 41 is located at a position where the free end 516 of the coupling rod 51 is staggered and cannot push the coupling rod 51.

[0051] Referring to Figure 2 , Figure 4 and Figure 8 , the central locking rod 31 in the unlocking position can be that the other end, such as the right end, of the central locking rod 31 is located at a predetermined position of the other end, such as the right end, of the support 11, and the pushing end 411 of the release plate 41 is located at a position where the free end 516 of the coupling rod 51 is transversely overlapped and can push the coupling rod 51.

[0052] Referring to Figure 2 , Figure 4 and Figure 8 , the specific structure of the central locking rod 31 slidingly fitted on the support 11 can be that each end of the support 11 has a pin column, such as the first pin column 111 and the second pin column 611, protruding from the surface of the central locking rod 31, and each end of the central locking rod 31 has a first elongated through hole 311 for linear sliding along the pin column, such as the first pin column 111 at the left end and the second pin column 611 at the right end, to slide the central locking rod 31 to the upper locking position or the unlocking position. Of course, the specific structure of the central locking rod 311 slidingly fitted on the support can also be a structure of longitudinal guide rails and longitudinal guide grooves, or a structure of a protruding column on the bottom surface of the central locking rod and an elongated sliding groove on the support.

[0053] Referring to Figure 2 , Figure 4 and Figure 8The pin post near the one end of the motor 21, such as the second pin post 611 at the right end, and the elastic structure, such as the central locking rod limiting torsion spring 32, can be indirectly arranged on the support 11: an electric appliance pin seat 61 is fixed on the support 11, the second pin post 611 at the right end is fixed, such as integrally injection molded, on the electric appliance pin seat 61, the torsion spring body 321 of the central locking rod limiting torsion spring 32 is sleeved on the torsion spring post 612 fixed, such as injection molded, on the electric appliance pin seat 61, one end of the central locking rod limiting torsion spring 32 is clamped in the clamping groove 613 of the electric appliance pin seat 61, the other end of the central locking rod limiting torsion spring 32 is clamped in the first clamping groove 312 at the end, such as the right end, of the central locking rod 31 to make the central locking rod 31 in the upper locking position or the second clamping groove 313 to make the central locking rod 31 in the unlocking position.

[0054] Of course, the pin post near the one end of the motor and the elastic structure can also be directly arranged on the support at the end, such as the right end.

[0055] The elastic structure can also be other specific structures, such as the central locking rod at the end, such as the right end, in the unlocked state can be provided with a tension spring on the support; it can also be provided with a spring clamping bead on the support, which is respectively limited with the clamping bead groove of the central locking rod in the unlocked position, or with the clamping bead groove of the central locking rod in the locked position, etc.

[0056] The middle part of the long strip plate part 412 of a hook-shaped release plate 41 is rotationally fitted on a shaft fixed on the support 11, the free end of the hook plate part 413 of the release plate 41 is a pushing end 411 for pushing the coupling rod 51, the hook plate part 413 is the part pushed by the outer pulling plate 71, and the long strip plate part 412 is the part pushed by the inner pulling plate 72. The pushing end 411 can also be called a pushing block. The release plate return spring is a release plate return torsion spring 42, the torsion spring body of the release plate return torsion spring 42 is sleeved on a shaft, one end of the release plate return torsion spring 42 is clamped on the torsion spring clamping block 414 fixed on the long strip plate part 412 of the release plate 41, and the other end of the release plate return torsion spring 42 is clamped on the support 11.

[0057] The structure that the coupling rod 51 is rotatably fitted on the central locking rod 31 can be that the central locking rod 31 has a hollow 315 for accommodating the cylindrical portion 511 of the coupling rod 51, and the hollow 315 has a U-shaped plate 3151 extending inwardly, the coupling rod 51 is clamped on the U-shaped plate 3151 by the limiting groove 514 formed by the two clamping claws 512 and the coupling rod body 513, and is axially limited, the coupling rod 51 is rotatably fitted on the U-shaped plate 3151, such as at the arc-shaped groove at the end of the U-shaped plate 3151, which can also be called the position 3152 for the rotation of the coupling rod. The other end of the hollow 315 away from the position 3152 for the rotation of the coupling rod can have an assembly through hole 3153, the cylindrical portion 511 of the coupling rod 51 and the two symmetrically arranged clamping claws 512 can pass through the assembly through hole 3153 and be slidably fitted on the U-shaped plate 3151 until sliding to the position 3152 for the rotation of the coupling rod. The coupling rod return spring is a coupling rod return torsion spring 52, the torsion spring body of the coupling rod return torsion spring 52 is sleeved on the cylindrical portion 511 of the coupling rod 51, one end of the coupling rod return torsion spring 52 is clamped in the clamping hook 316 protruding from the upper surface of the central locking rod 31, and the other end of the coupling rod return torsion spring 52 is clamped in the clamping hook 515 protruding from the surface of the central locking rod on the actuating end of the coupling rod 51. The end of the cylindrical portion 511 of the coupling rod 51 away from the central locking rod 31 can be provided with an axial limiting structure such as two axial limiting blocks 5111 to prevent the coupling rod return torsion spring 552 from being axially separated from the cylindrical portion 511 of the coupling rod 51.

[0058] The actuating structure on the worm wheel 23 and the central locking rod 31 can be that the worm wheel 23 has an actuating pin 231 protruding towards the central locking rod 31, and the central locking rod 31 has a pin recess 314 on the bottom surface for accommodating the actuating pin 231. The actuating structure can also be that the end of the central locking rod has an actuating pin, and the worm wheel has a pin recess for accommodating the actuating pin. It can also be that one of the worm wheel and the central locking rod has a hook, and the other has a hook ring matched with the hook.

[0059] Referring to Figure 2 , Figure 4 and Figure 8 , the central locking rod 31 is in the upper locking position, in simple terms, the central locking rod 31 slides to one end, such as to the left, driving the coupling rod 51 to slide to one end, such as to the left, or in other words, the coupling rod 51 slides to the left together with the central locking rod 31, the end, such as the left end, of the central locking rod 31 is located at a predetermined position of the end, such as the left end, of the support 11, and the actuating end 411 of the release plate 41 is located at a position away from the coupling rod 51, such as the free end 516 of the coupling rod 51, so as to be unable to actuate the coupling rod 51.

[0060] Referring to Figure 2 , Figure 4 and Figure 8, the central locking rod 31 is in the unlocking position, in common words, the central locking rod 31 slides to one end, for example, to the right, and drives the coupling rod 51 to slide to one end, for example, to the right, or in other words, the coupling rod 51 slides to the right along with the central locking rod 31, and the other end, for example, the right end, of the central locking rod 31 is located in the predetermined position of the other end, for example, the right end, of the support 11, and the pushing end 411 of the release plate 41 is located in the position that is horizontally overlapped with the coupling rod 51, for example, the free end 516 of the coupling rod 51, and can push the coupling rod 51.

[0061] It is not difficult to understand that when the central locking rod 31 is in the upper locking position, the inner pulling plate 72 of the inner unlocking assembly of the automobile side door lock and the outer pulling plate 71 of the outer unlocking assembly can both push the release plate 41 to rotate, but since the coupling rod 51 has been separated from the pushing end 411 of the release plate 41 due to the movement of the central locking rod 31, it cannot perform the subsequent interlocking reaction, so the lock cannot be opened. Only when the central locking rod 31 is in the above-mentioned unlocking position after being unlocked, the inner pulling plate 72 of the inner unlocking assembly of the automobile side door lock and the outer pulling plate 71 of the outer unlocking assembly can push the release plate 41 to rotate, so as to push the free end 516 of the coupling rod 51, and the lock can be opened. This is the focus of the present application.

[0062] The central locking rod 31 can also be called a central locking plate, or an intermediate locking rod, or a frame-type locking piece extending along the length direction of the support, or a frame-type locking plate. The electric appliance pin seat 61 can also be called an electric appliance pin assembly. The long-shaped through hole can also be called a waist-shaped through hole. The rotation cooperation can also be called rotation connection, which generally refers to the shafts of the respective holes that are movably sleeved. The shaft and the support 11 or the front cover 131 can be integrally formed by injection molding. The dislocation or separation of the pushing end 411 of the release plate 41 and the coupling rod 51 means that the two are in a position that cannot be pushed and connected. The free end 516 of the coupling rod 51 can also be called the pushing end of the coupling rod 51, and the part of the free end 516 of the coupling rod 51 close to the support 11 can have an arc-shaped pushing block 5161 for pushing the pawl linkage block 74. The horizontal overlap of the pushing end 411 of the release plate 41 and the coupling rod means that the two are in a position that can be pushed and connected. The locking can also be called the locking, and the unlocking can also be called the unlocking. The pushing connection can also be understood as the relationship between the two, that is, the relationship between the pushing and the being pushed. The straight-line movement can also be called the straight-line movement.

[0063] Referring to Figure 2 , Figure 4 and Figure 8 Figure 2 Figure 4 Figure 8 Figure 2 Figure 4 Figure 8 , the working principle of the preferred embodiment of the electric locking and unlocking mechanism of the automobile side door lock of the present application is as follows:

[0064] I. Electric locking: the motor 21 is started and rotates clockwise, driving the worm gear 23 to rotate counterclockwise, and the central locking rod 31 is driven to slide to the left to the left of the predetermined position or the maximum position limited by the pin columns at both ends of the support 11, such as the first pin column 111 and the second pin column 611, and the central locking rod limiting torsion spring 32 limits the central locking rod 31 to the locking position, at this time, the central locking rod 31 is located at the locking position, that is, the release plate 41 is located at the position where the driving end 411 of the release plate 41 is not in the position of the coupling rod 51 and cannot drive the coupling rod 51.

[0065] II. Electric unlocking: the motor 21 is started and rotates counterclockwise, driving the worm gear 23 to rotate clockwise, and the central locking rod 31 is driven to slide to the right to the right of the predetermined position or the maximum position limited by the pin columns at both ends of the support 11, such as the first pin column 111 and the second pin column 611, and the central locking rod limiting torsion spring 32 limits the central locking rod 31 to the unlocking position, at this time, the central locking rod 31 is located at the unlocking position, that is, the driving end 411 of the release plate 41 is located at the position of the coupling rod 51 and can drive the coupling rod 51.

[0066] It is not difficult to understand that the task to be completed by the electric locking and unlocking mechanism of the utility model automobile side door lock is electric locking or electric unlocking, and the next step of inside unlocking or outside unlocking after electric unlocking is the task of the unlocking mechanism of another utility model automobile side door lock filed on the same day as the utility model, such as when the central locking rod 31 is in the unlocking position, the long strip plate portion 412 of the release plate 4 is driven to rotate by the inner pull plate 72 in the automobile side door lock unlocking mechanism, or the hook plate portion 413 of the release plate 4 is driven to rotate by the outer pull plate 71 in the automobile side door lock unlocking mechanism, the driving end 411 of the release plate 41 drives the free end 516 of the coupling rod 51 to rotate, the free end 516 of the coupling rod 51 drives the ratchet linkage block 74 to rotate, drives the ratchet 75 to rotate, and makes the ratchet 75 disengage from the engagement with the clamping plate 73, and the clamping plate 73 is reset by the clamping plate reset spring to unlock.

[0067] The above-mentioned parts, structures, quantities, etc. not marked in the drawings are not shown in the drawings, and some parts are not marked in the drawings. The drawings are only schematic, and if there is any inconsistency between the drawings and the written description, or between the drawings and each other, the written description shall prevail.

[0068] The above description is only a preferred embodiment of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An electric locking and unlocking mechanism for a side door lock of an automobile, comprising a motor and a worm on a shaft of the motor and a worm wheel engaged with the worm; characterized in that, The application relates to a central locking rod slidingly matched with a support, wherein elastic structures are arranged on the central locking rod and the support to limit the central locking rod in an upper locking position or an unlocking position; a release plate is rotationally matched with a coupling rod arranged on the central locking rod; a release plate return spring and a coupling rod return spring are further arranged; a driving structure is arranged on the worm gear and the central locking rod to drive the worm gear to rotate and drive the central locking rod to the upper locking position or the unlocking position; when the central locking rod is in the upper locking position, one end of the central locking rod is located in a predetermined position of one end of the support, and the driving end of the release plate is located in a position which is staggered with the free end of the coupling rod and cannot drive the coupling rod; when the central locking rod is in the unlocking position, the other end of the central locking rod is located in a predetermined position of the other end of the support, and the driving end of the release plate is located in a position which is horizontally overlapped with the free end of the coupling rod and can drive the coupling rod; the two ends of the support are respectively provided with a pin column which protrudes from the surface of the central locking rod, and the two ends of the central locking rod are respectively provided with a first long hole which linearly slides along the pin column to slide the central locking rod to the upper locking position or the unlocking position; the pin column near the motor and the elastic structure are indirectly arranged on the support; an electric plug base is fixed on the support, the pin column at the end is fixed on the electric plug base, a central locking rod limiting torsion spring is sleeved on a torsion spring column fixed on the electric plug base, one end of the central locking rod limiting torsion spring is clamped in a clamping groove of the electric plug base, and the other end of the central locking rod limiting torsion spring is clamped in a first clamping groove of the central locking rod which is located in the upper locking position or a second clamping groove of the central locking rod which is located in the unlocking position; a long strip plate part of a hook-shaped release plate is rotationally matched with a shaft fixed on the support, the free end of a hook plate part of the release plate is a driving end for driving the coupling rod, the hook plate part is a part which can be driven by an outer unlocking assembly of a car side door lock, the long strip plate part is a part which can be driven by an inner unlocking assembly of the car side door lock; the release plate return spring is a release plate return torsion spring, the torsion spring body of the release plate return torsion spring is sleeved on a shaft, one end of the release plate return torsion spring is clamped on a torsion spring clamping block fixed on the long strip plate part of the release plate, and the other end of the release plate return torsion spring is clamped on the support; the coupling rod is rotationally matched with the structure of the central locking rod; the central locking rod is provided with a hollow space for accommodating a cylindrical part of the coupling rod, the hollow space is provided with a U-shaped plate which protrudes inward, the coupling rod is clamped on the U-shaped plate and is axially limited by a limiting groove formed by two buckles and the coupling rod body, and the coupling rod is rotationally matched with the U-shaped plate; the coupling rod return spring is a coupling rod return torsion spring, the torsion spring body of the coupling rod return torsion spring is sleeved on the cylindrical part of the coupling rod, one end of the coupling rod return torsion spring is clamped in a clamping hook which protrudes from the upper surface of the central locking rod, and the other end of the coupling rod return torsion spring is clamped in a clamping hook which protrudes from the surface of the central locking rod; the driving structure arranged on the worm gear and the central locking rod is that the worm gear is provided with a driving pin which protrudes towards the central locking rod, and the central locking rod is provided with a driving pin groove for accommodating the driving pin. ​ ​ ​ ​ ​ 2. The power latching and unlatching mechanism of a motor vehicle side door lock according to claim 1, characterized in that: ​ 3. The power latching and unlatching mechanism of a vehicle side door lock according to claim 1, characterized in that: ​ 4. The power latching and unlatching mechanism of a motor vehicle side door lock according to claim 1, characterized in that: ​ 5. The power latching and unlatching mechanism of a motor vehicle side door lock according to claim 1, characterized in that: ​ 6. The power latching and unlatching mechanism of an automotive side door lock according to claim 1, characterized by: ​

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