Door lock mechanism

Abstract

A door lock mechanism comprises a structural body, a buckle plate, a lock plate, a driving assembly and a multifunctional relay. The structural body is provided with a first shaft rod, a second shaft rod and a third shaft rod. The buckle plate is pivoted on the first shaft rod and preset at an unlocking position through a first reset element, and the buckle plate can rotate to a full-locking position and a semi-locking position between the unlocking position and the full-locking position. The lock plate is pivoted to the second shaft rod, a locking position is preset through a second reset element so as to hook the buckle plate at a half-locking position or a full-locking position, and the buckle plate can be rotationally released. The driving assembly comprises a motor, a two-way push rod and an unlocking connecting rod set. The two-way push rod is pivoted to the third shaft rod. The multifunctional relay is connected with the unlocking connecting rod set and comprises a lock plate relay part, an icebreaking relay part and an unlocking part. The motor drives the bidirectional push rod to rotate in the unlocking direction to drive the unlocking connecting rod set, the unlocking connecting rod set enables the multifunctional relay to rotate, the lock plate relay part pushes the lock plate to unlock the lock plate, and the ice breaking relay part and the unlocking part rotate at the same time.

Description

Technical Field

[0001] This utility model relates to automotive door locks, and more particularly to a door lock mechanism that performs multiple functions with a single motor. Background Technology

[0002] A typical car door lock is installed on the door frame to lock the door pivotally mounted on the frame. It features a rotatable strike plate and a lock plate. The lock hook on the door is inserted into a groove on the strike plate. Rotating the strike plate deflects the groove, preventing the hook from retracting. The lock plate then engages with the strike plate, locking it in place. To unlock, the lock plate is removed from the strike plate, allowing the strike plate to rotate and the hook to exit the groove.

[0003] Traditional car door locks only require unlocking, so they only need a relay for the lock plate, and a cable is used to operate the relay to move the lock plate. Modern car door locks, to accommodate functions such as automatic locking and electric unlocking, must have separate motors and control circuits to perform various functions. Moreover, generally, each function requires a separate motor to execute. Therefore, multi-functional electric vehicle door locks are bulky and expensive to manufacture. Utility Model Content

[0004] The purpose of this invention is to provide a door lock mechanism that performs multiple functions with a single motor.

[0005] This utility model provides a door lock mechanism, comprising a structure, a strike plate, a lock plate, a drive assembly, and a multi-functional relay. The structure has a first shaft, a second shaft, and a third shaft. The strike plate is pivotally mounted on the first shaft and preset to an unlocked position with a first reset element, and the strike plate can rotate to a fully locked position and a partially locked position between the unlocked and fully locked positions. The lock plate is pivotally mounted on the second shaft and preset to a locked position with a second reset element to hook the strike plate in the partially locked or fully locked position, and can rotate to release the strike plate. The drive assembly includes a motor, a bidirectional push rod, and an unlocking linkage assembly, with the bidirectional push rod pivotally mounted on the third shaft. The multi-functional relay connects to the unlocking linkage assembly and includes a lock plate relay part, an ice-breaking relay part, and an unlocking part. The motor drives the bidirectional push rod to rotate in one unlocking direction, which in turn drives the unlocking linkage group. The unlocking linkage group causes the multi-functional relay to rotate, and the locking plate relay pushes the locking plate to unlock the buckle. The ice-breaking relay and the unlocking part rotate simultaneously.

[0006] In one embodiment of this utility model, the door lock mechanism further includes an ice-breaking relay, which is pivotally mounted on the second shaft and connected to the buckle plate. When the lock plate relay pushes the lock plate but does not unlock the buckle plate, the motor drives the bidirectional push rod to rotate continuously in the unlocking direction, thereby driving the unlocking linkage group to push the ice-breaking relay of the multi-functional relay. The ice-breaking relay drives the ice-breaking relay to unlock the buckle plate.

[0007] In one embodiment of the present invention, the driving assembly further includes a locking linkage group, which includes a locking relay, a hook, and a guide arm. The buckle includes a driven hook. The motor drives the bidirectional push rod to rotate along a locking direction, thereby driving the locking relay. The guide arm guides the hook to move and drives the driven hook to lock the buckle.

[0008] In one embodiment of this utility model, the hook includes a guide post, the guide arm includes a guide rail, and the guide post is disposed on the guide rail.

[0009] In one embodiment of the present invention, the door lock mechanism further includes a guide rail arm, which is pivotally mounted on the structure and the guide rail is mounted on the guide rail arm. When the multi-functional relay rotates, it simultaneously pushes the guide rail arm away from the buckle plate.

[0010] In one embodiment of this utility model, when the multi-functional relay rotates, it can push the guide arm away from the buckle plate, thereby causing the hook's movement path to disengage from the buckle plate.

[0011] In one embodiment of this utility model, when the bidirectional push rod pushes the locking relay to rotate the buckle plate to the fully locked position, the multi-functional relay can rotate simultaneously to drive the hook to disengage from the buckle plate.

[0012] In one embodiment of this utility model, a multi-functional relay is connected to a cable, which can pull the multi-functional relay to rotate and push the locking plate away from the buckle plate.

[0013] In one embodiment of this utility model, the locking plate relay and the ice-breaking relay are support arms extending from a multi-functional relay.

[0014] In one embodiment of this utility model, the door lock mechanism further includes a control circuit board and an ice-breaking relay. The ice-breaking relay is pivotally mounted on a second shaft and hooks onto a latch plate, rotating in conjunction with the latch plate. A first magnetic element is provided on the ice-breaking relay, and a plurality of latch plate sensors are provided on the control circuit board corresponding to the latch plate's unlocked, fully locked, and partially locked positions. When the latch plate is in the unlocked, fully locked, and partially locked positions, the control circuit board detects the first magnetic element through the corresponding latch plate sensors.

[0015] In one embodiment of this utility model, when the control circuit board detects that the buckle plate has rotated from the unlocked position to the half-locked position, the control circuit board drives the bidirectional push rod to push the locking relay, thereby rotating the buckle plate to the fully locked position.

[0016] In one embodiment of this utility model, a multi-functional relay drives an ice-breaking relay, which in turn drives the buckle plate.

[0017] In one embodiment of this utility model, when the bidirectional push rod drives the multi-functional relay to rotate, and the control circuit board does not detect that the buckle is in the unlock position, the bidirectional push rod continues to drive the multi-functional relay to continue rotating until it drives the buckle to push the buckle to the unlock position.

[0018] In one embodiment of this utility model, a second magnetic element is provided on the locking plate, and a corresponding locking plate sensor is provided on the control circuit board. When the locking plate rotates and releases the buckle, the control circuit board detects the second magnetic element through the corresponding locking plate sensor.

[0019] In one embodiment of this utility model, when the bidirectional push rod drives the multi-functional relay to rotate until the control circuit board detects that the lock plate releases the buckle plate, and the control circuit board does not detect that the buckle plate is in the unlock position, the bidirectional push rod continues to rotate, causing the multi-functional relay to continue rotating until it drives the buckle plate to push the buckle plate to the unlock position.

[0020] In one embodiment of this utility model, a multi-functional relay is connected to a cable, which can pull the multi-functional relay to rotate in the relay direction and push the locking plate away from the buckle plate.

[0021] The door lock mechanism of this utility model operates the buckle plate and the lock plate respectively by bidirectional rotation of a single motor, and the lock plate is further equipped with a multi-functional relay, thereby enabling a single motor to perform various unlocking and locking actions. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of a door lock mechanism according to an embodiment of the present invention.

[0023] Figure 2 This is a three-dimensional exploded view of a door lock mechanism according to an embodiment of the present invention.

[0024] Figure 3 This is a three-dimensional schematic diagram of the internal structure of one side of a door lock mechanism according to an embodiment of the present invention.

[0025] Figure 4 This is a three-dimensional exploded view of the internal structure of a door lock mechanism according to an embodiment of the present invention.

[0026] Figure 5 This is a three-dimensional schematic diagram of the internal structure of the door lock mechanism on the other side of an embodiment of the present invention.

[0027] Figure 6 This is a schematic diagram illustrating the manual unlocking operation of a door lock mechanism according to an embodiment of the present invention.

[0028] Figure 7 This is a schematic diagram of a door lock mechanism in a semi-locked state according to an embodiment of the present invention.

[0029] Figures 8 to 10 This is a schematic diagram illustrating the self-locking mechanism of a door lock according to an embodiment of the present invention.

[0030] Figures 11 to 13 This is a schematic diagram of the electric unlocking operation of a door lock mechanism according to an embodiment of the present invention.

[0031] Figure 14 This is a schematic diagram of the ice-breaking operation of a door lock mechanism according to an embodiment of the present invention.

[0032] In the picture:

[0033] 10: Lock hook; 100: Structure; 100a: Entrance channel; 101, 102, 103: Shell components; 110: First shaft;

[0034] 111: First reset element; 120: Second shaft; 121: Second reset element; 130: Third shaft;

[0035] 131: Third reset element; 201: Release direction; 202: Locking groove; 203: Latch direction; 210: Buckle plate;

[0036] 211: Semi-locking position; 212: Fully locked position; 213: Driven hook; 214: Linked hook; 220: Locking plate;

[0037] 221: Second magnetic element; 222: Relay link; 223: Pin; 224: Locking plate body; 300: Drive assembly;

[0038] 310: Motor; 311: Transmission gear; 320: Two-way push rod; 321: Locking direction; 322: Unlocking direction;

[0039] 330: Unlocking linkage assembly; 331, 332: Linkages; 331a: Retaining wall; 340: Locking linkage assembly; 341: Locking relay;

[0040] 341a: Retaining wall; 342: Hook; 342a: Guide post; 343: Guide arm; 343a: Guide rail; 401: Relay direction;

[0041] 410: Multifunctional relay; 410b: Actuating point; 411: Lock plate relay; 412: Guide rail relay; 413: Ice-breaking relay;

[0042] 414: Cable; 415: Unlocking part; 420: Icebreaking relay; 421: First magnetic element; 422: Retaining wall; 424: Hook groove;

[0043] 500: Control circuit board; 501, 502, 503: Snap-on sensor; 504: Lock sensor. Detailed Implementation

[0044] In the description of this utility model, it should be understood that the terms "front side", "rear side", "left side", "right side", "front end", "rear end", "end", "longitudinal", "lateral", "vertical", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting conditions of this utility model.

[0045] Unless otherwise defined, terms such as "substantially" and "approximately" are used to describe and narrate small changes. When combined with an event or situation, the term may include the exact moment the event or situation occurred, or an approximate point in time. For example, when combined with a numerical value, the term may include a range of variation less than or equal to ±10% of the value, such as less than or equal to ±5%, less than or equal to ±4%, less than or equal to ±3%, less than or equal to ±2%, less than or equal to ±1%, less than or equal to ±0.5%, less than or equal to ±0.1%, or less than or equal to ±0.05%.

[0046] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0047] Figure 1 This is a three-dimensional schematic diagram of a door lock mechanism according to an embodiment of the present invention. Figure 2 This is an exploded perspective view of a door lock mechanism according to an embodiment of the present invention. (See attached diagram.) Figure 1 and Figure 2 This utility model provides a door lock mechanism, which is installed on the door frame of a car to lock the door pivotally mounted on the door frame. It includes a structure 100, a snap plate 210, a lock plate 220, a drive assembly 300, and a multi-functional relay 410. This utility model does not limit the form of the structure 100; the structure 100 may include multiple shell components 101, 102, and 103, with the snap plate 210 and lock plate 220 disposed within the structure 100. The structure 100 encloses an entrance channel 100a for the door latch to engage with the door lock mechanism.

[0048] Figure 3 This is a perspective view of the internal structure of one side of a door lock mechanism according to an embodiment of the present invention. (See attached diagram.) Figure 2 and Figure 3The structure 100 includes a first shaft 110, a second shaft 120, and a third shaft 130. The first shaft 110, the second shaft 120, and the third shaft 130 are disposed on one side of one of the housing members 101. A latching plate 210 is pivotally mounted on the first shaft 110, and a locking plate 220 is pivotally mounted on the second shaft 120. These housing members 101, 102, and 103 are assembled to house the first shaft 110, the second shaft 120, and the third shaft 130 within the structure 100.

[0049] Figure 4 This is an exploded perspective view of the internal structure of a door lock mechanism according to an embodiment of the present invention. (See attached diagram.) Figure 3 and Figure 4 The buckle plate 210 is pivotally mounted on the first shaft 110 and preset in a state with a first reset element 111. In this embodiment, the first reset element 111 is a helical spring sleeved on the first shaft 110, and the first reset element 111 presses against the buckle plate 210. The locking plate 220 is pivotally mounted on the second shaft 120 and preset in a state with a second reset element 121. In this embodiment, the second reset element 121 is a helical spring sleeved on the second shaft 120, and the second reset element 121 presses against the locking plate 220.

[0050] The door lock mechanism of this utility model further includes a locking linkage assembly 340 in its drive component 300. The locking linkage assembly 340 includes a locking relay 341, a hook 342, and a guide arm 343. The latch plate 210 includes a driven hook 213. The locking relay 341 is pivotally mounted on the third shaft 130, and a hook 342 is pivotally mounted on the locking relay 341 for hooking the latch plate 210. Specifically, the driven hook 213 extends from the edge of the latch plate 210 for engaging the hook 342. The locking relay 341 is in a preset state with a third reset element 131. In this embodiment, the third reset element 131 is a helical spring sleeved on the third shaft 130, and the third reset element 131 presses against the locking relay 341.

[0051] The guide arm 343 is pivotally mounted on the structure 100, and the guide arm 343 is provided with a guide rail 343a. A portion of the hook 342 is inserted into the guide rail 343a so that the hook 342 can be guided by the guide rail 343a when it moves. Specifically, the hook 342 includes a guide post 342a, which is inserted into the guide rail 343a and can slide along the guide rail 343a.

[0052] Figure 5 This is a perspective view of the internal structure of the door lock mechanism on the other side of an embodiment of the present invention. (See also...) Figures 3 to 5The drive assembly 300 includes a motor 310, a bidirectional push rod 320, and an unlocking linkage assembly 330. The motor 310 can be located on the other side of the aforementioned housing 101. The bidirectional push rod 320 is pivotally mounted on the third shaft 130, and the motor 310 can drive the bidirectional push rod 320 to rotate bidirectionally. The bidirectional push rod 320 and the motor 310 can be poweredly connected by at least one transmission gear 311. The motor 310 and the transmission gear 311 can be respectively located on two sides of the aforementioned housing 101. The unlocking linkage assembly 330 includes two connecting rods 331 and 332.

[0053] The multi-functional relay 410 is connected to the unlocking linkage 330 and can be rotated by the unlocking linkage 330. Specifically, the multi-functional relay 410 is pivotally connected to the linkages 331 and 332. The multi-functional relay 410 is made of bent metal sheet, and one end of one linkage 331 is pivotally connected to the third shaft 130, and its other end is pivotally connected to one end of another linkage 332. The other end of the other linkage 332 is pivotally connected to a consistent moving point 410b on the periphery of the multi-functional relay 410. The multi-functional relay 410 is pivotally mounted on the second shaft 120.

[0054] The door lock mechanism of this utility model also includes a control circuit board 500. The control circuit board 500 and the motor 310 are disposed on the same side of the aforementioned housing 101, and the motor 310 is electrically connected to the control circuit board 500 so that the motor 310 can be controlled by the control circuit board 500. A bend at the edge of the connecting rod 331 pivotally connected to the third shaft 130 forms a retaining wall 331a, and a bend at the edge of the locking relay 341 forms a retaining wall 341a. The bidirectional push rod 320 is disposed between these two retaining walls 331a and 341a and can rotate to either one to selectively push the locking relay 341 or the unlocking linkage 330.

[0055] See Figures 3 to 4The door lock mechanism of this utility model further includes an ice-breaking relay 420, which is made of bent metal sheet. The ice-breaking relay 420 is pivotally mounted on the second shaft 120 and hooks into the latch plate 210 for rotational linkage. Specifically, one end of the ice-breaking relay 420 is pivotally connected to the second shaft 120, and the other end is provided with a hooking groove 424. The latch plate 210 has a linkage hook 214, which hooks into the hooking groove 424 on the ice-breaking relay 420. The hooking groove 424 extends radially along the second shaft 120. A first magnetic element 421 is provided on the ice-breaking relay 420, and a second magnetic element 221 is provided on the lock plate 220. The control circuit board 500 can detect the operation of the first magnetic element 421 and the second magnetic element 221. Specifically, the locking plate 220 includes a relay link 222 and a locking plate body 224. Both the relay link 222 and the locking plate body 224 are pivotally mounted on the second shaft 120. The locking plate body 224 is used to hook the buckle plate 210. One end of the relay link 222 is provided with a pin 223, which is inserted into the locking plate body 224. One end of the locking plate body 224 is pivotally connected to the second shaft 120 and the other end is hooked to the buckle plate 210. Therefore, the locking plate body 224 cannot be pushed away from the buckle plate 210 by the connection between the locking plate body 224 and the buckle plate 210. Thus, the relay link 222 extends to the other side of the second shaft 120 to push the locking plate body 224 to rotate. The other end of the relay link 222 is used to install a second magnetic element 221, and the end edge is bent to strengthen the structure for the multi-functional relay 410 to push against. The first magnetic element 421 is located in the ice-breaking relay 420. It rotates in conjunction with the buckle plate 210 and moves along the arc path of the center of the second shaft 120, thus extending the moving distance to make the detection results more accurate.

[0056] The multi-functional relay 410 includes a locking plate relay 411, an ice-breaking relay 413, and an unlocking part 415. When the multi-functional relay 410 is rotated by the unlocking linkage 330, the locking plate relay 411 pushes the locking plate 220 to unlock the buckle plate 210, and the ice-breaking relay 413 and the unlocking part 415 rotate simultaneously.

[0057] Figure 6 This is a schematic diagram illustrating the manual unlocking operation of a door lock mechanism according to an embodiment of the present invention. (See attached diagram.) Figure 6The multi-functional relay 410 has a lock plate relay portion 411 for pushing the relay link 222 of the lock plate 220. The lock plate relay portion 411 is a support arm extending from the multi-functional relay 410. Since the relay link 222 is subjected to the force of the second reset element 121, the end edge of the lock plate relay portion 411 is bent to strengthen the structure for pushing the relay link 222. The multi-functional relay 410 is also connected to the unlocking portion 415. The unlocking portion 415 is a support arm extending from the multi-functional relay 410. The pull cable 414 can pull the unlocking portion 415 to rotate the multi-functional relay 410 in a relay direction 401 and push the lock plate 220 away from the buckle plate 210. When the buckle plate 210 is released from the lock plate 220, it rotates in a release direction 201 to return to its preset state and is located in an unlocked position. That is to say, the rotation direction of the buckle plate 210 toward the unlocked position is defined as the release direction 201. A latch plate sensor 501 is provided on the control circuit board 500 corresponding to the unlocking position of the latch plate 210. When the latch plate 210 is in the unlocking position, the control circuit board 500 can detect the first magnetic element 421 through the corresponding latch plate sensor 501. A lock plate sensor 504 is also provided on the control circuit board 500. When the lock plate 220 rotates to release the latch plate 210, the control circuit board 500 can detect the second magnetic element 221 through the corresponding lock plate sensor 504. The edge of the latch plate 210 has a lock groove 202 for accommodating the lock hook 10 on the door. When the latch plate 210 is in the unlocking position, the lock groove 202 aligns with the entrance channel 100a to allow the lock hook 10 to enter the lock groove 202 through the entrance channel 100a. The multi-functional relay 410 has a guide rail relay part 412, which is a support arm extending from the multi-functional relay 410. When the multi-functional relay 410 rotates in the relay direction 401 to unlock, the guide rail relay part 412 pushes the guide rail arm 343 away from the buckle plate 210, causing the hook 342 to move away from the buckle plate 210.

[0058] Figure 7 This is a schematic diagram of a door lock mechanism in a partially locked state according to an embodiment of the present invention. (See attached diagram.) Figure 6 and Figure 7 The first shaft 110 is offset to one side of the inlet channel 100a. When the lock hook 10 moves into the lock groove 202 along the inlet channel 100a, it can further push the latch plate 210 to rotate away from the unlocking position. At this time, the rotation direction of the latch plate 210 is opposite to the release direction 201, which is defined as the latching direction 203. See reference. Figure 7When the buckle plate 210 rotates away from the unlocked position, the lock groove 202 rotates and intersects the entrance channel 100a, and the lock hook 10 is confined at the intersection of the lock groove 202 and the entrance channel 100a. The edge of the buckle plate 210 has a half-locking part 211. When the buckle plate 210 is in the half-locked position, the lock plate 220 is in a locked position of its preset state. The edge of the lock plate 220 hooks the half-locking part 211 of the buckle plate 210 and positions the buckle plate 210 in the half-locked position. Specifically, the half-locking part 211 has a structure facing the release direction 201, thereby stopping the buckle plate 210 from rotating in the release direction 201. The control circuit board 500 is provided with buckle plate sensors 501 and 502 corresponding to the unlocked and half-locked positions of the buckle plate 210. When the buckle plate 210 is in the half-locked position, the control circuit board 500 can detect the first magnetic element 421 through the corresponding buckle plate sensor 502.

[0059] When the lock hook 10 is moved into the lock groove 202, thereby pushing the buckle plate 210 to rotate to the half-lock position and being locked by the lock plate 220, the control circuit board 500 can detect the movement of the first magnetic element 421 by the buckle plate sensors 501 and 502 corresponding to the half-lock position and the unlock position, respectively, and start to perform the self-locking action described later.

[0060] Figures 8 to 10 This is a schematic diagram illustrating the self-locking mechanism of a door lock according to an embodiment of the present invention. (See attached diagram.) Figure 8 The control circuit board 500 drives the bidirectional push rod 320 to rotate in a locking direction 321 via the motor 310, thereby driving the locking linkage assembly 340. The pawl 342 then drives the driven hook 213 to lock the buckle plate 210. Specifically, the bidirectional push rod 320 pushes the locking relay 341, which causes the pawl 342 to move along the guide rail 343a toward the driven hook 213 of the buckle plate 210. See reference. Figure 9 After the pawl 342 hooks the moving hook 213, the bidirectional push rod 320 rotates in the continuing locking direction 321, pushing the locking relay 341. The locking relay 341 drives the pawl 342 to continue moving along the guide rail 343a, rotating the latch plate 210 from the half-locked position toward the latching direction 203. The edge of the latch plate 210 has a fully locked position 212. After the latch plate 210 disengages from the half-locked position, the locking plate 220 disengages from the half-locked position 211 and presses against the edge of the latch plate 210. The edge of the latch plate 210 slides relative to the locking plate 220, and the fully locked position 212 moves toward the locking plate 220 along the latching direction 203. Specifically, the fully locked position 212 is oriented toward the release direction 201, thereby stopping the latch plate 210 from rotating toward the release direction 201. When rotated to the fully locked position, the fully locked position 212 reaches the locking plate 220, and the locking plate 220 returns to the locked position. See Figure 10The locking plate 220 engages with the fully locked position part 212, positioning the buckle plate 210 in the fully locked position. Therefore, the user only needs to move the lock hook 10 into the lock slot 202, and the control circuit board 500 will then continue the self-locking action. The control circuit board 500 is equipped with a buckle plate sensor 503 corresponding to the fully locked position of the buckle plate 210. When the buckle plate 210 is in the fully locked position, the control circuit board 500 can detect the first magnetic element 421 through the corresponding buckle plate sensor 503.

[0061] See also Figure 6 As mentioned earlier, when the multi-functional relay 410 rotates in the relay direction 401 to unlock, it simultaneously pushes the guide arm 343 away from the buckle plate 210, causing the hook 342 to disengage from the buckle plate 210. Therefore, in the event of an emergency during the self-locking action (such as being caught in a foreign object or hand), the multi-functional relay 410 can be pulled in the relay direction 401 by the cable 414, thereby breaking the linkage between the hook 342 and the buckle plate 210 and unlocking the buckle plate 210.

[0062] Figures 11 to 13 This is a schematic diagram illustrating the operation of the electric unlocking mechanism of a door lock mechanism according to an embodiment of the present invention. (See attached diagram.) Figures 11 to 12 The bidirectional push rod 320 can rotate in an unlocking direction 322 to push the unlocking linkage 330, thereby causing the multi-functional relay 410 to rotate in the relaying direction 401 and push the lock plate 220 away from the buckle plate 210 to unlock. When the control circuit board 500 receives an unlocking command, it begins the electric unlocking action described later. The control circuit board 500 drives the bidirectional push rod 320 to rotate in the unlocking direction 322 to push the retaining wall 331a of the corresponding linkage 331 of the locking relay 341, thereby pushing the actuation point 410b of the multi-functional relay 410 through the pivotally connected linkage 332, thereby causing the multi-functional relay 410 to rotate in the relaying direction 401 and push the lock plate 220 away from the buckle plate 210. See also Figure 13 After the buckle plate 210 is released, it is driven by the first reset element 111 to rotate in the release direction 201 to the unlock position.

[0063] Figure 14 This is a schematic diagram illustrating the ice-breaking operation of a door lock mechanism according to an embodiment of the present invention. (See attached diagram.) Figure 14When the bidirectional push rod 320 drives the multi-functional relay 410 to rotate in the relay direction 401 to perform an electric unlocking action, or when the control circuit board 500 detects that the lock plate 220 releases the buckle plate 210 (manual unlocking), but the control circuit board 500 does not detect that the buckle plate 210 is in the unlocked position, the control circuit board 500 will determine that the buckle plate 210 is stuck and perform the ice-breaking action described later, that is, directly operate the buckle plate 210 to unlock. Specifically, the multi-functional relay 410 has an ice-breaking relay part 413 for pushing the ice-breaking relay 420. The ice-breaking relay part 413 is a support arm extending from the multi-functional relay 410. The ice-breaking relay 420 is linked with the buckle plate 210 and is subjected to the force of the first reset element 111. Therefore, the end edge of the ice-breaking relay part 413 is bent to strengthen the structure for pushing against the ice-breaking relay 420, and a corresponding bend is formed at one edge of the ice-breaking relay 420 to form a retaining wall 422 for the ice-breaking relay part 413 to push against. The aforementioned locking plate relay part 411, guide rail relay part 412, and ice-breaking relay part 413 are arranged along the periphery of the multi-functional relay 410. When the multi-functional relay 410 rotates in the relay direction 401, it sequentially pushes the locking plate 220, the guide rail arm 343, and the ice-breaking relay 420. The control circuit board 500 controls the bidirectional push rod 320 to continue rotating in the unlocking direction 322, causing the multi-functional relay 410 to continue rotating in the relay direction 401 until its ice-breaking relay part 413 pushes the ice-breaking relay 420 to rotate around the second shaft 120. When the ice-breaking relay 420 rotates, it pushes the linkage hook 214 on the buckle plate 210 through the hook groove 424, thereby driving the buckle plate 210 to rotate around the first shaft 110 in the release direction 201 to the unlock position.

[0064] The door lock mechanism of this utility model operates the buckle plate 210 and the lock plate 220 respectively by bidirectional rotation of a single motor 310. Furthermore, the lock plate 220 is further equipped with a multi-functional relay 410, thereby enabling a single motor 310 to perform various unlocking and locking actions.

[0065] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A door lock mechanism, characterized in that, include: A structure having a first shaft, a second shaft, and a third shaft; A buckle plate is pivotally mounted on the first shaft and preset in an unlocked position with a first reset element, and the buckle plate can be rotated to a fully locked position and a half-locked position located between the unlocked position and the fully locked position; A locking plate is pivotally mounted on the second shaft and preset to a locking position with a second reset element to hook the buckle plate in the half-lock position or the full-lock position, and can be rotated to release the buckle plate; A drive assembly includes a motor, a bidirectional push rod, and an unlocking linkage group, wherein the bidirectional push rod is pivotally mounted on the third shaft; and A multi-functional relay is connected to the unlocking linkage assembly. The multi-functional relay includes a locking plate relay, an ice-breaking relay, and an unlocking part. The motor drives the bidirectional push rod to rotate along an unlocking direction, thereby driving the unlocking linkage group. The unlocking linkage group causes the multi-functional relay to rotate, and the locking plate relay pushes the locking plate to unlock the buckle. The ice-breaking relay and the unlocking part rotate simultaneously.

2. The door lock mechanism as described in claim 1, characterized in that, It further includes an ice-breaking relay, pivotally mounted on the second shaft and connected to the buckle plate. When the locking plate relay pushes the locking plate but does not unlock the buckle plate, the motor drives the bidirectional push rod to rotate continuously along the unlocking direction, thereby driving the unlocking linkage group to push the ice-breaking relay of the multi-functional relay. The ice-breaking relay drives the ice-breaking relay to unlock the buckle plate.

3. The door lock mechanism as described in claim 1, characterized in that, The drive assembly further includes a locking linkage group, which includes a locking relay, a hook, and a guide arm. The buckle includes a driven hook. The motor drives the bidirectional push rod to rotate in a locking direction, thereby driving the locking relay. The guide arm guides the hook to move and drives the driven hook to lock the buckle.

4. The door lock mechanism as described in claim 3, characterized in that, The hook includes a guide post, the guide arm includes a guide rail, and the guide post is disposed on the guide rail.

5. The door lock mechanism as described in claim 3, characterized in that, When the multi-functional relay rotates, it simultaneously pushes the guide rail arm away from the buckle plate.

6. The door lock mechanism as described in claim 5, characterized in that, When the multi-functional relay rotates, it can push the guide arm away from the buckle plate, causing the movement path of the hook to disengage from the buckle plate.

7. The door lock mechanism as described in claim 5, characterized in that, When the bidirectional push rod pushes the locking relay to rotate the buckle plate to the fully locked position, the multi-functional relay can rotate simultaneously to drive the hook to disengage from the buckle plate.

8. The door lock mechanism as described in claim 7, characterized in that, The multi-functional relay is connected to a cable, which can pull the multi-functional relay to rotate and push the locking plate away from the buckle plate.

9. The door lock mechanism as described in claim 1, characterized in that, The locking plate relay and the ice-breaking relay are extensions of the multi-functional relay.

10. The door lock mechanism as described in claim 3, characterized in that, The device further includes a control circuit board and an ice-breaking relay. The ice-breaking relay is pivotally mounted on the second shaft and hooks onto the buckle plate, rotating in conjunction with the buckle plate. The ice-breaking relay is provided with a first magnetic element, and the control circuit board is provided with a plurality of buckle plate sensors corresponding to the unlocked position, the fully locked position, and the half-locked position of the buckle plate. When the buckle is in the unlocked position, the fully locked position, and the half-locked position, the control circuit board detects the first magnetic element through the corresponding buckle sensor.

11. The door lock mechanism as described in claim 10, characterized in that, When the control circuit board detects that the buckle plate has rotated from the unlocked position to the half-locked position, the control circuit board drives the bidirectional push rod to push the locking relay, thereby rotating the buckle plate to the fully locked position.

12. The door lock mechanism as described in claim 10, characterized in that, The multi-functional relay drives the ice-breaking relay, which in turn drives the buckle plate.

13. The door lock mechanism as described in claim 10, characterized in that, When the bidirectional push rod drives the multi-functional relay to rotate, and the control circuit board does not detect that the buckle is in the unlock position, the bidirectional push rod continues to rotate in the locking direction, causing the multi-functional relay to continue rotating until it drives the buckle to push the buckle to the unlock position.

14. The door lock mechanism as described in claim 10, characterized in that, A second magnetic element is provided on the locking plate, and a corresponding locking plate sensor is provided on the control circuit board. When the locking plate rotates to release the buckle, the control circuit board detects the second magnetic element through the corresponding locking plate sensor.

15. The door lock mechanism as described in claim 14, characterized in that, When the bidirectional push rod drives the multi-functional relay to rotate until the control circuit board detects that the lock plate releases the buckle plate, and the control circuit board does not detect that the buckle plate is in the unlock position, the bidirectional push rod continues to rotate, causing the multi-functional relay to continue rotating until it drives the buckle plate to push the buckle plate to the unlock position.

16. The door lock mechanism as described in claim 1, characterized in that, The multi-functional relay is connected to a cable, which can pull the multi-functional relay to rotate and push the locking plate away from the buckle plate.

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