Locking mechanism, door lock device, and vehicle

Abstract

A locking mechanism, a door lock device, and a vehicle are disclosed. The locking mechanism includes a cam, a locking arm, and a first gear. The cam is rotatably connected to a first rotating shaft. The locking arm is rotatably connected to a second rotating shaft and is used to connect with the cam. The first gear is rotatably connected to the first rotating shaft and is used to connect with the cam. The locking mechanism includes a locked state and an unlocked state. In the locked state, the locking arm is connected to the first gear, so that the first gear is fixed relative to the first rotating shaft. During the process of switching from the locked state to the unlocked state, the cam rotates around the first rotating shaft and drives the locking arm to rotate around the second rotating shaft. The locking arm and the first gear separate, and the cam drives the first gear to rotate relative to the first rotating shaft. The above-mentioned locking mechanism has a simple structure, does not require a motor drive, and can achieve the design requirements of miniaturization and low cost.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, specifically to a locking mechanism, a door lock device, and a vehicle. Background Technology

[0002] Existing car door lock structures are mostly complex and have many parts in order to achieve the functions of unlocking and locking. They require motor drive, which results in car door locks being bulky and expensive. Summary of the Invention

[0003] The purpose of this application is to provide a locking mechanism, a door lock device, and a vehicle. The locking mechanism has a simple structure, does not require motor drive, and can meet the design requirements of miniaturization and low cost.

[0004] To achieve the objectives of this application, the following technical solution is provided:

[0005] In a first aspect, this application provides a locking mechanism, including a cam, a locking arm, and a first gear; the cam is rotatably connected to a first rotating shaft; the locking arm is rotatably connected to a second rotating shaft and connected to the cam; the first gear is rotatably connected to the first rotating shaft and connected to the cam; the locking mechanism includes a locked state and an unlocked state; in the locked state, the locking arm is connected to the first gear so that the first gear is fixed relative to the first rotating shaft; during the process of switching from the locked state to the unlocked state, the cam rotates around the first rotating shaft and drives the locking arm to rotate around the second rotating shaft, the locking arm and the first gear separate, and the cam drives the first gear to rotate relative to the first rotating shaft.

[0006] In one embodiment, the cam has a first groove, the locking arm includes a first protrusion, the first groove extends in an arc around the first pivot on the cam, the first protrusion passes through the first groove and moves within the first groove.

[0007] In one embodiment, the locking arm includes a hook, the first gear includes a locking platform, the hook is located at the end of the locking arm away from the second rotating shaft, and the locking platform protrudes from the side of the first gear facing the cam; in the locked state, the hook connects to the locking platform to restrict the first gear from rotating around the first rotating shaft; in the unlocked state, the hook separates from the locking platform.

[0008] In one embodiment, the locking mechanism further includes a connecting arm, which is mounted on the first rotating shaft and located between the cam and the first gear. During the process of switching from the locked state to the unlocked state, the cam drives the connecting arm to rotate, and the connecting arm drives the first gear to rotate.

[0009] In one embodiment, the cam includes a second protrusion, and the connecting arm has a second groove, through which the second protrusion passes and moves within the second groove.

[0010] In one embodiment, the locking mechanism further includes a rocker arm mounted on a third rotating shaft and connected to the cam; during the process of switching from the locked state to the unlocked state, the rocker arm rotates around the third rotating shaft and drives the cam to rotate.

[0011] In one embodiment, the rocker arm includes a first mating part, and the cam includes a second mating part. The first mating part and the second mating part are connected so that during the process of switching from the locked state to the unlocked state, the rocker arm drives the cam to rotate.

[0012] In one embodiment, the locking mechanism further includes a pull wire and a slider connected together. The slider is connected to the rocker arm, and the pull wire is used to connect to an external drive mechanism. During the switching between the locked state and the unlocked state, the pull wire extends and retracts to drive the slider to move, and the slider drives the rocker arm to rotate.

[0013] In one embodiment, the locking mechanism further includes a second gear, which is mounted on a fourth rotating shaft and connected to the first gear. The second gear is also used to connect to an external driven mechanism. During the process of switching from the locked state to the unlocked state, the first gear drives the second gear to rotate, thereby driving the external driven mechanism to unlock.

[0014] Secondly, this application also provides a door lock device, including the locking mechanism described in any one of the embodiments of the first aspect.

[0015] Thirdly, this application also provides a vehicle, including a door and a locking mechanism as described in any one of the embodiments of the first aspect, the locking mechanism being installed inside the door.

[0016] This application achieves the locking state of the locking mechanism by setting a locking arm to connect to and engage with the first gear. Then, by rotating the cam, the locking arm is first rotated to separate from the first gear, giving the first gear a tendency to rotate. Continuing to rotate the cam can then drive the first gear to rotate accordingly, thereby achieving the unlocked state. The above-mentioned locking mechanism has a simple structure, which can improve the efficiency of manufacturing and assembly. At the same time, the fewer parts involved result in a smaller space occupancy rate of the locking mechanism, which can meet the design requirements of miniaturization. Moreover, the above-mentioned unlocking process is simple and does not require the participation of a motor, which can greatly reduce the cost of motor drive. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the external structure of a locking mechanism according to one embodiment;

[0019] Figure 2 This is an exploded structural diagram of a locking mechanism according to one embodiment;

[0020] Figure 3 This is a schematic diagram showing the positional relationship of the cam, locking arm, and first gear in the locked state according to one embodiment.

[0021] Figure 4 This is a schematic diagram showing the positional relationship between the connecting arm, the locking arm, and the first gear in the locked state according to one embodiment.

[0022] Figure 5 This is a schematic diagram showing the positional relationship between the cam, locking arm, and first gear in the unlocked state according to one embodiment.

[0023] Figure 6 This is a schematic diagram showing the positional relationship of the connecting arm, locking arm, and first gear in the unlocked state according to one implementation method.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100-Locking mechanism, 11-Cam, 111-First groove, 111A-Inner wall, 111B-Outer wall, 112-Second protrusion, 113-Second mating part, 12-Locking arm, 12A-Rotating part, 12B-Main body, 121-First protrusion, 122-Hook, 123-Lever, 13-First gear, 131-Card platform, 132-Gear body, 14-Connecting arm, 141-Second groove, 15-Swing arm, 151-First mating part, 16-Pull wire, 17-Slider, 18-Second gear, 191-Torsion spring, 192-First retaining ring, 193-Second retaining ring;

[0026] 20-Outer shell, 201-Upper shell, 202-Lower shell, 203-Bottom shell, 21-First pivot, 22-Second pivot, 23-Third pivot, 24-Fourth pivot, 25-Screw. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0029] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application's specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0030] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0031] The locking mechanism provided in this application can be used in vehicles, including fuel-powered cars and new energy electric vehicles. Preferably, the vehicle can have a hidden door handle, and the locking mechanism helps the vehicle to extend the door handle to unlock and close the door handle to lock.

[0032] In one implementation method, please refer to Figure 1 and Figure 2 The locking mechanism 100 includes a cam 11, a locking arm 12, and a first gear 13. The cam 11 is rotatably connected to a first rotating shaft 21. The locking arm 12 is rotatably connected to a second rotating shaft 22 and is connected to the cam 11. The first gear 13 is rotatably connected to the first rotating shaft 21 and is connected to the cam 11. The locking mechanism 100 includes a locked state and an unlocked state. In the locked state, the locking arm 12 is connected to the first gear 13 so that the first gear 13 is fixed relative to the first rotating shaft 21. During the process of switching from the locked state to the unlocked state, the cam 11 rotates around the first rotating shaft 21 and drives the locking arm 12 to rotate around the second rotating shaft 22. The locking arm 12 and the first gear 13 separate, and the cam 11 drives the first gear 13 to rotate relative to the first rotating shaft 21.

[0033] Specifically, the locking mechanism 100 can be installed on the vehicle body or the door. The locking mechanism 100 cooperates with the drive mechanism and the driven mechanism to achieve locking and unlocking. Please refer to [reference needed]. Figure 1 The locking mechanism 100 includes a housing 20, which comprises a detachably connected upper housing 201 and a lower housing 202. The upper housing 201 and lower housing 202, when connected, enclose a first receiving cavity, within which the cam 11, locking arm 12, and first gear 13 are all housed. A first rotating shaft 21 and a second rotating shaft 22 are connected to the lower housing 202, and the axes of the first rotating shaft 21 and the second rotating shaft 22 are parallel.

[0034] In one embodiment, the first rotating shaft 21, the second rotating shaft 22, and the lower housing 202 are integrally molded structures. Understandably, the lower housing 202 can be an injection-molded structure, so the first rotating shaft 21 and the second rotating shaft 22 can be protruding columnar structures on the lower housing 202. The upper housing 201 includes a first mating surface, and the lower housing 202 includes a second mating surface. After the upper housing 201 and the lower housing 202 are connected, the first mating surface and the second mating surface face each other. The axial directions of the first rotating shaft 21 and the second rotating shaft 22 are perpendicular to the second mating surface. Shaft holes that mate with the first rotating shaft 21 and the second rotating shaft 22 can be formed on the first mating surface. The first rotating shaft 21 and the second rotating shaft 22 are respectively inserted into the corresponding shaft holes, thereby fixing the rotating shafts.

[0035] In one embodiment, the locking mechanism 100 further includes a screw 25. The upper housing 201 and lower housing 202 are respectively provided with screw holes. The screw 25 passes through the threads on the first mating surface and the second mating surface, fixing the upper housing 201 and the lower housing 202. Therefore, the insertion direction of the screw 25 can be the same as the axial direction of the first rotating shaft 21 and the second rotating shaft 22. Of course, other fixing methods can be used in other embodiments, which are not limited here.

[0036] In one embodiment, the first gear 13 may be located behind the cam 11 in the direction from the first mating surface to the second mating surface. The cam 11 may be directly or indirectly connected to the drive mechanism described above, which may be the vehicle's outward-opening door handle. The first gear 13 may be directly or indirectly connected to the driven mechanism described above, which may be a locking device on the door or vehicle body.

[0037] In one embodiment, the locking mechanism 100 includes a locked state and an unlocked state. In the locked state, the cam 11 is not driven by the drive mechanism and remains relatively stationary with respect to the first rotating shaft 21. Furthermore, the locking arm 12 is also not driven by the cam 11 and remains stationary. The locking arm 12 connects to and engages the first gear 13, preventing it from rotating freely. Therefore, the first gear 13 cannot drive the driven mechanism, and the door remains locked. Optionally, the locking arm 12 engages with the gear ring of the first gear 13 to prevent the first gear 13 from rotating; of course, in other embodiments, the locking arm 12 can also engage the first gear 13 at other positions.

[0038] During the transition from the locked to the unlocked state, the cam 11, driven by the drive mechanism, can rotate clockwise or counterclockwise around the first rotating shaft 21, simultaneously causing the locking arm 12 to rotate clockwise or counterclockwise around the second rotating shaft 22. When the locking arm 12 rotates to disengage from the first gear 13, the first gear 13, no longer engaged, can rotate clockwise or counterclockwise around the first rotating shaft 21 under the drive of the cam 11. Ultimately, the driven mechanism can also open the door and unlock it under the drive of the first gear 13.

[0039] Of course, when switching from the unlocked state to the locked state, the cam 11 is driven by the drive mechanism to rotate counterclockwise or clockwise around the first rotating shaft 21, and at the same time drives the first gear 13 to rotate counterclockwise or clockwise around the first rotating shaft 21 to reset. Then, the cam 11 drives the locking arm 12 to rotate counterclockwise or clockwise around the second rotating shaft 22 to reset, until it holds the first gear 13, completing the locking.

[0040] In one embodiment, the cam 11 rotates around the first pivot 21 to three positions: a first position, a second position, and a third position. When the cam 11 is in the first position, the locking mechanism 100 is locked. When the cam 11 moves from the first position to the second position in one direction around the first pivot 21, the cam 11 drives the locking arm 12 to disengage from the first gear 13. When the cam 11 is in the second position, the locking arm 12 is disengaged from the first gear 13, and the first gear 13 does not rotate. Then, as the cam 11 continues to move from the second position to the third position in the aforementioned direction around the first pivot 21, the cam 11 drives the first gear 13 to rotate. When the cam 11 is in the third position, the first gear 13 rotates to the final unlocked position.

[0041] This application achieves the locking state of the locking mechanism 100 by setting a locking arm 12 to connect to and engage with the first gear 13. Then, by rotating the cam 11, the locking arm 12 is first rotated to separate from the first gear 13, so that the first gear 13 has a tendency to rotate. After the cam 11 continues to rotate, the first gear 13 can be rotated accordingly, thereby achieving the unlocked state. The locking mechanism 100 has a simple structure, which can improve the efficiency of manufacturing and assembly. At the same time, the fewer parts required make the locking mechanism 100 have a small space occupancy rate, which can meet the design requirements of miniaturization. Moreover, the unlocking process is simple and does not require the participation of a motor, which can greatly reduce the cost of motor drive.

[0042] In one implementation method, please refer to Figure 3 and Figure 5The cam 11 has a first groove 111, and the locking arm 12 includes a first protrusion 121. The first groove 111 extends in an arc around the first rotating shaft 21 on the cam 11, and the first protrusion 121 passes through the first groove 111 and moves within the first groove 111. Specifically, the cam 11 has a first groove 111 on the side facing the first gear 13, and the first groove 111 can penetrate the cam 11 or be recessed inward from the surface of the cam 11. The locking arm 12 includes a rotating part 12A and a main body 12B connected together. The rotating part 12A is connected to the second rotating shaft 22 and rotates; the main body 12B extends outward from the side of the rotating part 12A until it is connected to the first gear 13. The main body 12B is located between the cam 11 and the first gear 13, and the first protrusion 121 is connected to the main body 12B and is located on the side of the main body 12B facing the cam 11.

[0043] In one embodiment, the first groove 111 extends in an arc around the first pivot 21 on the cam 11, and the radius of the first groove 111 to the first pivot 21 is the same, while the groove width of the first groove 111 remains constant. For example, the two opposite sides of the first groove 111 are an inner sidewall 111A and an outer sidewall 111B, with the inner sidewall 111A being closer to the first pivot 21 than the outer sidewall 111B. Moreover, the distance from any point on the inner sidewall 111A to the first pivot 21 is the same, and the distance from any point on the outer sidewall 111B to the first pivot 21 is the same. As shown in the figure, when the cam 11 is in the first position, the first protrusion 121 is located at the rightmost side of the first groove 111. Then, as the cam 11 moves from the first position to the second position, the cam 11 rotates clockwise around the first pivot 21. The first protrusion 121 moves to the leftmost side of the first groove 111 under the push of the inner sidewall 111A, causing the locking arm 12 to rotate counterclockwise around the second rotating shaft 22, thereby realizing the separation of the locking arm 12 and the first gear 13.

[0044] In other embodiments, the radii of the first groove 111 to the first rotating shaft 21 are different, while the groove width of the first groove 111 remains constant. For example, the two opposite sides of the first groove 111 are an inner sidewall 111A and an outer sidewall 111B, with the inner sidewall 111A being closer to the first rotating shaft 21 than the outer sidewall 111B. As shown in the figure, the distance from the inner sidewall 111A to the first rotating shaft 21 increases counterclockwise, and the distance from the outer sidewall 111B to the first rotating shaft 21 also increases counterclockwise. It is understood that the leftmost side of the first groove 111 is further away from the first rotating shaft 21 than the rightmost side of the first groove 111. The movement of the first protrusion 121 within the first groove 111 can refer to the above-described embodiments. It is understood that in this embodiment, in order for the cam 11 to push the locking arm 12 to separate from the first gear 13, the main body 12B is pushed away from the cam 11 by the rotation of the cam 11. By increasing the radius of the centrifugal force of the first groove 111, the locking arm 12 can be pushed away by the first protrusion 121.

[0045] In one implementation method, please refer to Figure 4 and Figure 6 The locking arm 12 includes a hook 122, and the first gear 13 includes a locking platform 131. The hook 122 is located at the end of the locking arm 12 away from the second rotating shaft 22, and the locking platform 131 protrudes from the side of the first gear 13 facing the cam 11. In the locked state, the hook 122 connects to the locking platform 131 to restrict the first gear 13 from rotating around the first rotating shaft 21. In the unlocked state, the hook 122 separates from the locking platform 131.

[0046] Specifically, the main body 12B includes a hook 122 and a lever 123. The lever 123 is connected at both ends to the rotating part 12A and the hook 122, respectively. The hook 122 and the lever 123 are connected at an angle. The first gear 13 includes a gear body 132 and a locking platform 131. The gear body 132 is a rim with a gear ring; the locking platform 131 is a structure that protrudes from the gear body 132 towards the cam 11, so the locking platform 131 is located between the cam 11 and the gear body 132. The locking platform 131 protrudes in a spiral motion from the gear body 132 towards the cam 11. For example, the locking platform 131 extends in a ring shape from the starting point to the ending point, forming a connection between the starting and ending points, and the ending point protrudes more from the surface of the gear body 132 than the starting point. Therefore, in the locked state, the hook 122 can be connected to the ending point of the locking platform 131. The separation process of the hook 122 and the locking platform 131 can be referred to the above embodiment.

[0047] In one implementation method, please refer to Figure 4 and Figure 6The locking mechanism 100 also includes a connecting arm 14, which is mounted on the first rotating shaft 21 and located between the cam 11 and the first gear 13. During the process of switching from the locked state to the unlocked state, the cam 11 drives the connecting arm 14 to rotate, and the connecting arm 14 drives the first gear 13 to rotate.

[0048] Specifically, the connecting arm 14 can be located between the latch 131 and the cam 11 in the above embodiment, and the connecting arm 14 can be engaged with the cam 11 and the first gear 13 respectively. When the cam 11 moves from the first position to the second position in one direction around the first rotating shaft 21, the connecting arm 14 can remain stationary relative to the first rotating shaft 21. When the cam 11 continues to move from the second position to the third position in the same direction around the first rotating shaft 21, the connecting arm 14 can be driven by the cam 11 to rotate in the same direction, and drive the first gear 13 to rotate.

[0049] In one implementation method, please refer to Figure 2 The locking mechanism 100 also includes a torsion spring 191 located between the connecting arm 14 and the first gear 13. The connecting arm 14 drives the first gear 13 to rotate via the torsion spring 191. For example, the connecting arm 14 includes a first annular engagement portion (not shown in the figure) around a first rotating shaft 21; the first gear 13 includes a second annular engagement portion (not shown in the figure) around the first rotating shaft 21. The opposite ends of the torsion spring 191 extend into the first engagement portion and the second engagement portion, respectively. When the connecting arm 14 rotates, it simultaneously compresses the torsion spring 191 towards the first gear 13, so that the torsion spring 191 can drive the first gear 13 to rotate. When switching to the locked state, the first gear 13 rotates in the opposite direction towards the connecting arm 14, compressing the torsion spring 191, so that the connecting arm 14 returns to its original position.

[0050] In one implementation method, please refer to Figure 4 and Figure 6 The cam 11 includes a second protrusion 112, and the connecting arm 14 has a second groove 141. The second protrusion 112 passes through the second groove 141 and moves within the second groove 141. Specifically, the connecting arm 14 has a second groove 141 on the side facing the cam 11, and the second groove 141 can penetrate the connecting wall or be recessed inward from the surface of the connecting arm 14. The second protrusion 112 is located on one side of the first groove 111.

[0051] In one embodiment, the second groove 141 extends in an arc around the first rotating shaft 21 in the connecting arm 14, and the radius of the second groove 141 to the first rotating shaft 21 is the same, while the groove width of the second groove 141 remains unchanged. Alternatively, it can extend in a straight line; no specific limitation is imposed. The specific movement relationship of the second protrusion 112 within the second groove 141 is as follows: when the cam 11 is in the first position, the second protrusion 112 is located at the leftmost position of the second groove 141. Then, as the cam 11 moves from the first position to the second position, the cam 11 rotates clockwise around the first rotating shaft 21. The second protrusion 112 moves to the rightmost position of the second groove 141. It is understood that at this time, only the cam 11 rotates, and the second protrusion 112 moves within the second groove 141, without driving the locking arm 12. When the cam 11 moves from the second position to the third position, the cam 11 continues to rotate clockwise around the first rotating shaft 21. Since the second protrusion 112 is located at the far right of the second groove 141, the second protrusion 112 can push the connecting arm 14 to rotate clockwise.

[0052] In one implementation method, please refer to Figure 2 The locking mechanism 100 also includes a rocker arm 15, which is mounted on the third rotating shaft 23 and connected to the cam 11. During the process of switching from the locked state to the unlocked state, the rocker arm 15 rotates around the third rotating shaft 23 and drives the cam 11 to rotate. Specifically, the rocker arm 15 is connected to the cam 11, and the rocker arm 15 drives the cam 11 to rotate clockwise or counterclockwise by rotating clockwise or counterclockwise around the third rotating shaft 23. Furthermore, the rocker arm 15 can also be directly or indirectly connected to the drive mechanism to achieve rotation.

[0053] In one implementation method, please refer to Figure 2 The locking mechanism 100 also includes a bottom shell 203, which is detachably connected to the lower shell 202, and the bottom shell 203 and the lower shell 202 enclose a second receiving cavity. The aforementioned rocker arm 15 is housed in the second receiving cavity. A third rotating shaft 23 is connected to the bottom shell 203, and the axis of the third rotating shaft 23 is perpendicular to the axis of the first rotating shaft 21.

[0054] In one possible implementation, the locking mechanism 100 further includes a first snap ring 192, which is sleeved between the third rotating shaft 23 and the lower housing 202 and is used to fix the third rotating shaft 23 and the rocker arm 15.

[0055] In one embodiment, the third rotating shaft 23 and the bottom shell 203 are an integral structure. Understandably, the shell can be an injection-molded structure, so the third rotating shaft 23 can be a protruding columnar structure on the bottom shell 203. The lower shell 202 includes a third mating surface, and the bottom shell 203 includes a fourth mating surface. After the bottom shell 203 and the lower shell 202 are connected, the third mating surface and the fourth mating surface face each other. The direction of the third rotating shaft 23 is perpendicular to the third mating surface; a shaft hole that mates with the third rotating shaft 23 can be formed on the third mating surface, and the third rotating shaft 23 is inserted into the shaft hole to fix the rotating shaft.

[0056] In one implementation method, please refer to Figure 2 , Figure 3 and Figure 5 The rocker arm 15 includes a first mating part 151, and the cam 11 includes a second mating part 113. The first mating part 151 and the second mating part 113 are connected so that during the process of switching from the locked state to the unlocked state, the rocker arm 15 drives the cam 11 to rotate. Specifically, the first mating part 151 can be a hole opened on the rocker arm 15, and the second mating part 113 can be a ball protrusion extending from the cam 11, which extends into and is held in the hole. In this way, when the rocker arm 15 swings left and right, it can drive the cam 11 to rotate. Of course, in other embodiments, the first mating part 151 and the second mating part 113 can also be implemented in other structures, and there is no specific limitation. Preferably, the second mating part 113 is located at the end of the cam 11 opposite to the second protrusion 112, so that the distance between the second mating part 113 and the second protrusion 112 is the farthest, which can increase the displacement stroke of the second protrusion 112.

[0057] In one implementation method, please refer to Figure 2 The locking mechanism 100 also includes a pull wire 16 and a slider 17 connected together. The slider 17 is connected to the rocker arm 15, and the pull wire 16 is used to connect to an external drive mechanism. During the switching between the locked and unlocked states, the pull wire 16 extends and retracts to move the slider 17, which in turn drives the rocker arm 15 to rotate. Specifically, the slider 17 is housed in the second receiving cavity described above and can be connected to the lower housing 202. The small slider 17 is connected to the end of the rocker arm 15 away from the first mating part 151. The pull wire 16 is connected to both the drive mechanism and the slider 17. The drive mechanism drives the slider 17 to move left and right through the pull wire 16, thereby causing the rocker arm 15 to rotate around the third pivot 23.

[0058] In other embodiments, the rocker arm 15 may also be driven by other means, such as a lever.

[0059] In one implementation method, please refer to Figure 2The locking mechanism 100 also includes a second gear 18, which is mounted on the fourth rotating shaft 24 and connected to the first gear 13. The second gear 18 is also used to connect to an external driven mechanism. During the process of switching from the locked state to the unlocked state, the first gear 13 drives the second gear 18 to rotate, thereby driving the external driven mechanism to unlock. Specifically, the fourth rotating shaft 24 is connected to the lower housing 202, and the axes of the fourth rotating shaft 24 and the first rotating shaft 21 are parallel. The second gear 18 meshes with the first gear 13.

[0060] In one possible implementation, please refer to Figure 2 The locking mechanism 100 also includes a second snap ring 193, which is sleeved between the fourth rotating shaft 24 and the upper housing 201 and is used to fix the fourth rotating shaft 24 and the second gear 18.

[0061] The following describes the complete movement process of the locking mechanism 100.

[0062] Switching to the unlocked state: First, the drive mechanism extends and retracts the pull cable 16, which pushes the slider 17 to slide on the lower housing 202. The slider 17 drives the rocker arm 15 to rotate around the third axis 23. The rocker arm 15 drives the cam 11 to rotate around the first axis 21. The cam 11 drives the locking arm 12 to rotate around the second axis 22, disconnecting it from the first gear 13. Then, as the cam 11 continues to rotate, it drives the connecting arm 14 to rotate around the first axis 21. The connecting arm 14 compresses the torsion spring 191 to drive the first gear 13 to rotate. The first gear 13 drives the second gear 18 to rotate around the fourth axis 24. The second gear 18 then unlocks the driven mechanism.

[0063] Switching to the locked state: The drive mechanism drives the pull cable 16 to extend and retract, pushing the slider 17 to slide on the lower housing 202. The slider 17 drives the rocker arm 15 to rotate around the third rotating shaft 23, and the rocker arm 15 drives the cam 11 to rotate around the first rotating shaft 21. Then, the cam 11 drives the first gear 13 to reset and rotate, and the first gear 13 drives the second gear 18 to reset. When the cam 11 rotates to a certain angle, it will drive the locking arm 12 to reset and rotate, and the locking arm 12 will reconnect and engage with the first gear 13.

[0064] In addition, this application also provides a door lock device, which can use the locking mechanism 100 described in the above embodiments. The door lock device can be used in vehicles or in other mechanical structures that require locking and unlocking, and there are no specific limitations.

[0065] In the description of the embodiments of this application, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0066] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of the claims. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments and equivalent variations made in accordance with the claims of this application are still within the scope of this application.

Claims

1. A locking mechanism (100), characterized in that, include: Cam (11) is rotatably connected to the first rotating shaft (21); A locking arm (12) is rotatably connected to a second rotating shaft (22) and is used to connect to the cam (11); The first gear (13) is rotatably connected to the first rotating shaft (21), and the first gear (13) is connected to the cam (11) through the connecting arm (14); The locking mechanism (100) includes a locked state and an unlocked state; In the locked state, the locking arm (12) is connected to the first gear (13) so that the first gear (13) is fixed relative to the first rotating shaft (21); During the process of switching from the locked state to the unlocked state, the cam (11) rotates around the first rotating shaft (21) and drives the locking arm (12) to rotate around the second rotating shaft (22). The locking arm (12) and the first gear (13) separate. The cam (11) drives the connecting arm (14) to rotate, and the connecting arm (14) drives the first gear (13) to rotate.

2. The locking mechanism (100) according to claim 1, characterized in that, The cam (11) has a first groove (111), and the locking arm (12) includes a first protrusion (121). The first groove (111) extends in an arc around the first rotating shaft (21) on the cam (11). The first protrusion (121) passes through the first groove (111) and moves within the first groove (111).

3. The locking mechanism (100) according to claim 1, characterized in that, The locking arm (12) includes a hook (122), and the first gear (13) includes a locking platform (131). The hook (122) is located at the end of the locking arm (12) away from the second rotating shaft (22), and the locking platform (131) protrudes from the side of the first gear (13) facing the cam (11). In the locked state, the hook (122) connects to the locking platform (131) to restrict the first gear (13) from rotating around the first rotating shaft (21). In the unlocked state, the hook (122) separates from the locking platform (131).

4. The locking mechanism (100) according to claim 1, characterized in that, The connecting arm (14) is mounted on the first rotating shaft (21) and located between the cam (11) and the first gear (13).

5. The locking mechanism (100) according to claim 4, characterized in that, The cam (11) includes a second protrusion (112), and the connecting arm (14) has a second groove (141). The second protrusion (112) passes through the second groove (141) and moves within the second groove (141).

6. The locking mechanism (100) according to claim 1, characterized in that, The locking mechanism (100) further includes a rocker arm (15), which is mounted on a third rotating shaft (23) and connected to the cam (11). During the process of switching from the locked state to the unlocked state, the rocker arm (15) rotates around the third rotating shaft (23) and drives the cam (11) to rotate.

7. The locking mechanism (100) according to claim 6, characterized in that, The rocker arm (15) includes a first mating part (151), and the cam (11) includes a second mating part (113). The first mating part (151) and the second mating part (113) are connected so that during the process of switching from the locked state to the unlocked state, the rocker arm (15) drives the cam (11) to rotate.

8. The locking mechanism (100) according to claim 1, characterized in that, The locking mechanism (100) also includes a pull wire (16) and a slider (17) connected to each other. The slider (17) is connected to the rocker arm (15). The pull wire (16) is used to connect to an external drive mechanism. During the switching between the locked state and the unlocked state, the pull wire (16) extends and retracts to drive the slider (17) to move. The slider (17) drives the rocker arm (15) to rotate.

9. The locking mechanism (100) according to claim 1, characterized in that, The locking mechanism (100) further includes a second gear (18), which is mounted on the fourth rotating shaft (24) and connected to the first gear (13). The second gear (18) is also used to connect to an external driven mechanism. During the process of switching from the locked state to the unlocked state, the first gear (13) drives the second gear (18) to rotate, which is used to drive the external driven mechanism to unlock.

10. A door lock device, characterized in that, Includes the locking mechanism (100) as described in any one of claims 1-9.

11. A vehicle, characterized in that, Includes a vehicle door and a locking mechanism (100) as described in any one of claims 1-9, the locking mechanism (100) being installed inside the vehicle door.

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