Locking mechanism and traffic equipment

Abstract

The utility model discloses a locking mechanism and traffic equipment, and relates to the technical field of traffic equipment. The locking mechanism comprises a matching structure and a lock body, and the matching structure is provided with a lock hole; the lock body comprises a fixing assembly and a support assembly, a lock shaft, a rotating piece and a driving device are arranged on the support assembly, one end of the lock shaft is connected with the fixing assembly, and the other end of the lock shaft extends out of the support assembly and extends into the lock hole; the rotating part is in transmission connection with the driving device, first threads are arranged on the periphery of the lock shaft, second threads are arranged on the inner periphery of the rotating part, and the second threads are connected with the first threads in a matched mode; the driving device is used for driving the rotating piece to rotate so as to drive the support assembly to move in the axial direction of the lock shaft through the rotating piece, and at least one end face of the support assembly can abut against and be fixed to the fixing assembly. Before locking, the fixing assembly and the support assembly are allowed to move relative to each other, positioning error margin is provided, after locking, the driving device drives the rotating piece, the support assembly and the fixing assembly are fixed to each other, and limiting of a matched structure is achieved.

Description

Technical Field

[0001] This application relates to the field of transportation equipment technology, and in particular to a locking mechanism and transportation equipment. Background Technology

[0002] For most two-part structures, the two separate structures need to be combined into a whole in some operating conditions. For example, in a split-type flying transportation device, the land vehicle and the aircraft need to be stored in the land vehicle after use to complete the combination of the aircraft and the land vehicle, and then the aircraft is transported away by the land vehicle.

[0003] After the aircraft of the air transport equipment docks with the land vehicle, a locking operation is required to lock the aircraft and the land vehicle relative to each other, thereby limiting and constraining the aircraft and preventing excessive shaking relative to the land vehicle during special conditions such as emergency braking, cornering, and crossing speed bumps, which could cause damage. The conventional locking method involves inserting a locking shaft into a locking hole to achieve the locking engagement.

[0004] However, there is a certain docking error during the docking process between the aircraft and the land vehicle, and due to the aircraft's heavy weight, its position is difficult to adjust directly. Therefore, during the locking process, the locking shaft may not easily extend into the locking hole, making it difficult for the locking mechanism to achieve effective locking. Similarly, for other heavy-duty two-part structures, the two separate structures also face docking errors and position adjustment difficulties during locking, making it difficult for existing locking mechanisms to achieve effective locking. Utility Model Content

[0005] The main objective of this application is to propose a locking mechanism and traffic device that aims to solve the technical problem that existing locking mechanisms may be unable to achieve effective locking during the locking process of two separate structures due to the existence of docking errors and the difficulty of position adjustment.

[0006] To achieve the above objectives, the locking mechanism proposed in this application includes a mating structure and a lock body. The mating structure has a lock hole. The lock body includes a fixing component and a support component. The support component has a locking shaft, a rotating component, and a driving device. One end of the locking shaft is connected to the fixing component, and the other end of the locking shaft extends out of the support component and into the lock hole. The rotating component is driven by the driving device. The outer circumference of the locking shaft has a first thread, and the inner circumference of the rotating component has a second thread, which engages with the first thread. The driving device drives the rotating component to rotate, thereby causing the support component to move axially along the locking shaft, so that at least one end face of the support component presses against and fixes the fixing component.

[0007] In one embodiment, the other end of the locking shaft extends into the locking hole along a first direction; the bracket assembly has a receiving groove on one end face facing the fixing assembly, and an elastic element is provided in the receiving groove. The first end of the elastic element is connected to the receiving groove, and the second end of the elastic element abuts against the fixing assembly. The elastic element is used to apply an elastic force along the first direction to the bracket assembly.

[0008] In one embodiment, a retaining ring is further provided in the receiving groove. The retaining ring is disposed between the fixing component and the second end of the elastic member. The second end of the elastic member abuts against the retaining ring, and the retaining ring abuts against the fixing component. When the support component and the fixing component are movable relative to each other, there is a first gap between the fixing component and the support component, and the thickness of the retaining ring is greater than the first gap.

[0009] In one embodiment, the elastic element is configured as a wave spring.

[0010] In one embodiment, the thread helix angle of the first thread and the second thread is less than the equivalent friction angle of the first thread and the second thread.

[0011] In one embodiment, the bracket assembly has a first shaft hole, and the locking shaft passes through the first shaft hole.

[0012] In one embodiment, the rotating member is provided with a positioning member, which is fixedly connected to the rotating member and protrudes radially from the outer periphery of the rotating member. The lock body further includes a first sensor and a second sensor. When the rotating member is rotated to a first angle, the bracket assembly is locked to the fixed assembly, and the positioning member triggers the first sensor to output a locking signal. When the rotating member is rotated to a second angle, the bracket assembly is unlocked from the fixed assembly, and the positioning member triggers the second sensor to output an unlocking signal.

[0013] In one embodiment, the support assembly is further provided with a blocking member, which is connected to the support assembly. The first sensor, the second sensor, and the blocking member are arranged circumferentially along the rotating member. The blocking member is located on the side of the second sensor facing away from the first sensor and is used to block the positioning member.

[0014] In one embodiment, the angle difference between the first angle and the second angle is less than or equal to 180°; and / or, the positioning member is made of metal; and / or, the blocking member is made of metal.

[0015] In one embodiment, the positioning member has at least one opening, and the rotating member has a limiting hole corresponding to the opening. The length of the opening along the circumferential direction of the locking shaft is greater than or equal to the diameter of the limiting hole. The bracket assembly further includes a limiting member, one end of which passes through the opening and is limited and engaged with the limiting hole, and the other end of which presses the positioning member between the limiting member and the rotating member.

[0016] In one embodiment, the positioning member has a second shaft hole, and the positioning member is sleeved on the locking shaft through the second shaft hole.

[0017] In one embodiment, the support assembly has a protruding structure at one end facing the fixing assembly, the protruding structure protruding from the support assembly in the opposite direction of the first direction, and the protruding structure is used to abut against the fixing assembly.

[0018] In one embodiment, the protrusion structure protrudes from the support assembly in the opposite direction of the first direction by 0.3 mm to 1.2 mm.

[0019] In one embodiment, the rotating member is configured as a locking gear, and the output end of the driving device is provided with a transmission gear, which meshes with the locking gear.

[0020] In one embodiment, the fixing component is used to connect to the vehicle body bracket, or the fixing component is integrally formed with the vehicle body bracket.

[0021] This application also proposes a transportation device comprising a land vehicle, an aircraft, and the aforementioned locking mechanism; the land vehicle has a fixed end; the lock body of the locking mechanism is connected to the fixed end, and a mating structure of the locking mechanism is mounted on the aircraft, the aircraft being used to dock with the land vehicle so that the locking shaft of the lock body extends into the lock hole of the mating structure; a driving device for the lock body is used to drive the rotating component of the lock body to fix the support assembly of the lock body to the fixed assembly of the lock body.

[0022] The technical solution of this application provides a locking shaft, a rotating component, and a driving device on a support assembly. The support assembly supports the locking shaft, rotating component, and driving device. One end of the locking shaft is connected to a fixed component, and the other end extends out of the support assembly and into a lock hole. Due to the gap between the fixed component and the support assembly, the support assembly and the fixed component can move relative to each other in this state. Therefore, the degree of freedom of the locking shaft located between the fixed component and the support assembly is not completely restricted. Subsequently, by connecting the rotating component to the driving device and engaging the first thread of the locking shaft with the second thread of the rotating component, the driving device drives the rotating component to rotate, causing the rotating component to move along the axial direction of the locking shaft. This causes the rotating component to move closer to the fixed component along the axial direction of the locking shaft, ultimately causing at least one end face of the support assembly to press against and fix the fixed component. Since the driving force applied by the driving device can generate a contact force and friction between the support assembly and the fixed component, reliable fixation between the support assembly and the fixed component can be achieved, thereby restricting the degree of freedom of the locking shaft and thus constraining the degree of freedom of the mating structure, achieving reliable locking of the mating structure in four degrees of freedom.

[0023] This application employs a drive device to drive a rotating component, adjusting the relative fixation or movement of the bracket assembly and the fixed assembly. During the docking process between the lock hole and the lock shaft of the mating structure, the bracket assembly and the fixed assembly move relative to each other to accommodate positional errors in the mating structure, allowing the lock shaft to smoothly extend into the lock hole. After docking, the drive device drives the rotating component to fix the bracket assembly and the fixed assembly, thereby fixing the position of the lock shaft. This achieves the limiting of the mating structure through the engagement of the lock shaft and the mating structure. This solution can accommodate positional errors in the mating structure for docking of the lock shaft and the lock hole, while also achieving a reliable locking effect, thus effectively locking two separate structural components in a heavy-duty two-part structure. Attached Figure Description

[0024] 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 based on the structures shown in these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the structure of an embodiment of the transportation equipment provided in this application;

[0026] Figure 2 A three-dimensional structural schematic diagram of an embodiment of the locking mechanism provided in this application;

[0027] Figure 3A schematic diagram of a partial structure of the lock body in an embodiment of the locking mechanism provided in this application;

[0028] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0029] Figure 5 A schematic diagram of a partial structure of another embodiment of the lock body in the locking mechanism provided in this application;

[0030] Figure 6 This is a schematic diagram of a partial structure of another embodiment of the lock body in the locking mechanism provided in this application.

[0031] Explanation of icon numbers:

[0032] 10. Locking mechanism; 20. Land vehicle; 30. Aircraft;

[0033] 11. Fitting structure; 111. Lock hole;

[0034] 12. Lock body;

[0035] 121. Fixing components;

[0036] 122. Bracket assembly; 1221. Receiving groove; 1222. Elastic element; 1223. Retaining ring; 1224. First shaft hole; 1225. Blocking element; 1226. Limiting element; 1227. Protruding structure;

[0037] 123. Locking shaft; 124. Rotating component; 125. Driving device; 126. Positioning component; 1261. Opening; 1262. Second shaft hole; 127. First sensor; 128. Second sensor.

[0038] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] 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 the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0040] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0042] For most two-part structures, the two separate structures need to be combined into a whole in some operating conditions. For example, in a split-type flying transportation device, the land vehicle and the aircraft need to be stored in the land vehicle after use to complete the combination of the aircraft and the land vehicle, and then the aircraft is transported away by the land vehicle.

[0043] After the aircraft of the air transport equipment docks with the land vehicle, a locking operation is required to lock the aircraft and the land vehicle relative to each other, thereby limiting and constraining the aircraft and preventing excessive shaking relative to the land vehicle during special conditions such as emergency braking, cornering, and crossing speed bumps, which could cause damage. The conventional locking method involves inserting a locking shaft into a locking hole to achieve the locking engagement.

[0044] However, there is a certain docking error during the docking process between the aircraft and the land vehicle, and due to the aircraft's heavy weight, its position is difficult to adjust directly. Therefore, during the locking process, the locking shaft may not easily extend into the locking hole, making it difficult for the locking mechanism to achieve effective locking. Similarly, for other heavy-duty two-part structures, the two separate structures also face docking errors and position adjustment difficulties during locking, making it difficult for existing locking mechanisms to achieve effective locking.

[0045] Therefore, this application proposes a locking mechanism and traffic equipment to solve the technical problem that existing locking mechanisms may be unable to achieve effective locking during the locking process of two separate structures due to the existence of docking errors and the difficulty of position adjustment.

[0046] Reference Figures 1 to 2In one embodiment of this application, the transportation device includes a land vehicle 20, an aircraft 30, and a locking mechanism 10. It is understood that the land vehicle 20 can be configured as a car such as a pickup truck or a van. The land vehicle 20 has a space to accommodate the aircraft 30 so that the aircraft 30 can dock with the land vehicle 20 within the space, and the land vehicle 20 can transport the aircraft 30 on the road and provide energy to the aircraft 30. The aircraft 30 can also be detached from the land vehicle 20 and used for flight in the air. The land vehicle 20 has a fixed end, which can be understood as a vehicle body structure such as a body frame, body panel, or docking panel. The locking mechanism 10's lock body is connected to the fixed end, and the locking mechanism 10's mating structure is installed on the aircraft 30. The aircraft 30 is used to dock with the land vehicle 20 so that the lock shaft of the lock body extends into the lock hole of the mating structure, thereby limiting the lock shaft and the lock hole. The lock body's drive device is used to drive the rotating part of the lock body to fix the lock body's support assembly and the lock body's fixed assembly. Since the fixed assembly is connected to the lock shaft, and the lock shaft extends out of the support assembly, the fixation of the support assembly and the fixed assembly can completely constrain the lock shaft's degree of freedom. Therefore, the degree of freedom of the lock hole that is limited by the lock shaft can also be constrained, thereby limiting the aircraft 30, constraining the aircraft 30's degree of freedom, and preventing the aircraft 30 from shifting or colliding due to bumps and vibrations during the land vehicle 20's operation.

[0047] For ease of understanding, the docking process between the aircraft 30 and the land vehicle 20 is explained below. Specifically, refer to... Figures 1 to 2 Taking the docking direction as the X-axis, the horizontal direction perpendicular to the X-axis as the Y-axis, and the vertical direction perpendicular to the X-axis as the Z-axis, when the aircraft 30 docks, it approaches the fixed end of the land vehicle 20 along the X-axis. The mating structure on the aircraft 30 moves towards the lock body along the X-axis, thereby docking the lock hole with the lock shaft. When the distance between the aircraft 30 and the fixed end along the X-axis reaches the preset spacing, the aircraft 30 stops moving in the X-axis direction, and the drive device drives the rotating part to rotate, so that the bracket assembly and the fixed assembly are fixed, thereby restricting the degree of freedom of the lock shaft. Because the locking hole and locking shaft of the mating structure are locked together, the movement freedom of the aircraft 30 along the Y-axis and Z-axis, as well as the rotational freedom around the Y-axis and Z-axis, are all restricted. Furthermore, after the aircraft 30 docks with the land vehicle 20, the bottom of the aircraft 30 abuts against the land vehicle 20, so the rotational freedom of the aircraft 30 around the X-axis is also restricted. The aircraft 30 only has the movement freedom along the X-axis. The movement freedom in the X-axis direction can be limited by other limiting methods, such as providing a snap-fit ​​component on at least one side of the aircraft 30 along the Y-axis and providing a snap-fit ​​structure on the land vehicle 20. These will not be elaborated on here.

[0048] Reference Figure 2 , 3 5. In some embodiments, the locking mechanism 10 includes a mating structure 11 and a lock body 12. The mating structure 11 is provided with a lock hole 111. The lock body 12 includes a fixing component 121 and a bracket assembly 122. The bracket assembly 122 is provided with a locking shaft 123, a rotating component 124 and a driving device 125. One end of the locking shaft 123 is connected to the fixing component 121, and the other end of the locking shaft 123 extends out of the bracket assembly 122 and into the lock hole 111. The rotating component 124 is connected to the driving device 125. The outer circumference of the locking shaft 123 is provided with a first thread, and the inner circumference of the rotating component 124 is provided with a second thread. The second thread is engaged with the first thread. The driving device 125 is used to drive the rotating component 124 to rotate, so that the bracket assembly 122 moves along the axial direction of the locking shaft 123 through the rotating component 124, so that at least one end face of the bracket assembly 122 abuts against and is fixed to the fixing component 121.

[0049] In this embodiment, the bracket assembly 122 is provided with a locking shaft 123, a rotating member 124, and a driving device 125. The bracket assembly 122 provides support for the locking shaft 123, the rotating member 124, and the driving device 125. One end of the locking shaft 123 is connected to the fixing member 121, and the other end of the locking shaft 123 extends out of the bracket assembly 122 and into the locking hole 111. Since there is a gap between the fixing member 121 and the bracket assembly 122, the bracket assembly 122 and the fixing member 121 can move relative to each other in this state. Therefore, the position between the fixing member 121 and the bracket assembly 122... The degree of freedom of the locking shaft 123 between 22 is not fully restricted. Then, by connecting the rotating member 124 to the driving device 125 and engaging the first thread of the locking shaft 123 with the second thread of the rotating member 124, the driving device 125 drives the rotating member 124 to rotate, causing it to move axially along the locking shaft 123. This, in turn, causes the support assembly 122 to move axially along the locking shaft 123 towards the fixed assembly 121, ultimately pressing and fixing at least one end face of the support assembly 122 against the fixed assembly 121. Since the driving force applied by the driving device 125 generates a contact force and friction between the support assembly 122 and the fixed assembly 121, reliable fixing between them is achieved, completely restricting the degree of freedom of the locking shaft 123. This, in turn, constrains the degree of freedom of the mating structure 11, achieving reliable locking of the mating structure 11 in four degrees of freedom. Specifically, taking the aforementioned docking direction as the X-axis direction, the horizontal direction perpendicular to the X-axis as the Y-axis direction, and the vertical direction perpendicular to the X-axis as the Z-axis direction as an example, the locking shaft 123 can constrain the mating structure 11 to have the degrees of freedom of movement along the Y-axis and Z-axis, as well as the degrees of freedom of rotation around the Y-axis and Z-axis.

[0050] In this embodiment, the rotating component 124 is driven by the driving device 125 to adjust the bracket assembly 122 and the fixed component 121 to be fixed or movable relative to each other. During the docking process between the locking hole 111 of the mating structure 11 and the locking shaft 123, the bracket assembly 122 and the fixed component 121 move relative to each other to accommodate positional errors in the mating structure 11, allowing the locking shaft 123 to smoothly extend into the locking hole 111. After docking, the driving device 125 drives the rotating component 124 to fix the bracket assembly 122 and the fixed component 121 to each other, thereby fixing the position of the locking shaft 123. Thus, the locking shaft 123 and the mating structure 11 are engaged to limit the movement of the mating structure 11. This solution can both accommodate positional errors in the mating structure 11 to allow the locking shaft 123 to dock with the locking hole 111 and achieve a reliable locking effect, thereby effectively locking the two separate structures in a heavy-duty two-part structure.

[0051] In one optional implementation, the drive device 125 can be an electric drive device such as a motor, or it can be a hydraulic device. The specific configuration can be selected according to the actual driving torque requirements, and this embodiment does not impose any restrictions on this. In addition, as an optional implementation, the end of the locking shaft 123 facing the lock hole 111 can be provided with a guide portion. This guide portion can be configured as a guide slope structure such as a conical slope structure or a frustum-shaped slope structure, so as to guide the locking shaft 123 to smoothly extend into the lock hole 111, avoid the locking shaft 123 failing to connect with the lock hole 111, and reduce the scratches caused by the locking shaft 123 to the lock hole 111.

[0052] Reference Figures 2 to 3 In some embodiments, the other end of the locking shaft 123 extends into the locking hole 111 along the first direction; the bracket assembly 122 has a receiving groove 1221 on one end face facing the fixing assembly 121, and an elastic member 1222 is provided in the receiving groove 1221. The first end of the elastic member 1222 is connected to the receiving groove 1221, and the second end of the elastic member 1222 abuts against the fixing assembly 121. The elastic member 1222 is used to apply an elastic force along the first direction to the bracket assembly 122.

[0053] In this embodiment, a receiving groove 1221 is provided on one end face of the support assembly 122 facing the fixing assembly 121. The receiving groove 1221 allows the elastic member 1222 to be disposed in the receiving groove 1221, preventing the elastic member 1222 from being completely exposed between the support assembly 122 and the fixing assembly 121. This avoids the elastic member 1222 from sagging under gravity, causing the direction of the elastic force applied by the elastic member 1222 to deviate from the expected direction, and also avoids the presence of the elastic member 1222 from hindering the pressing and fixing of at least one end face of the support assembly 122 with the fixing assembly 121. The elastic member 1222 is disposed in the receiving groove 1221, with its first end connected to the receiving groove 1221 and its second end abutting against the fixing assembly 121. The elastic force applied to the bracket assembly 122 by the elastic element 1222 along the first direction is the direction in which the locking shaft 123 extends into the lock hole 111. Therefore, when the bracket assembly 122 and the fixing assembly 121 are in a state of mutual movement, the elastic force applied to the bracket assembly 122 by the elastic element 1222 can effectively prevent the bracket assembly 122 from sagging and forming an angle with the fixing assembly 121. This avoids the locking shaft 123 from having an angle with each other during the locking process of extending into the lock hole 111, effectively avoiding the problem of difficulty in locking the locking shaft 123. It also avoids the problem that the driving device 125 needs to overcome a lot of resistance to make at least one end face of the bracket assembly 122 fit and fix with the fixing assembly 121 due to the angle between the bracket assembly 122 and the fixing assembly 121.

[0054] As an optional implementation, the elastic element 1222 can be set as a wave spring. Compared with other types of springs, the single coil thickness of the wave spring is thinner, which can save more axial space and has less space requirements. The receiving groove 1221 does not need to be very deep to accommodate the wave spring. In addition, the wave spring is in the shape of a sheet, and each sheet is relatively wide, so that the wave spring is not prone to tilting or jamming in the receiving groove 1221. Therefore, the wave spring is suitable as the elastic element 1222 in the receiving groove 1221 of this application.

[0055] Reference Figures 2 to 4In some embodiments, a retaining ring 1223 is also provided in the receiving groove 1221. The retaining ring 1223 is located between the fixing component 121 and the second end of the elastic member 1222. The second end of the elastic member 1222 abuts against the retaining ring 1223, and the retaining ring 1223 abuts against the fixing component 121. In this way, the second end of the elastic member 1222 can be prevented from directly abutting against the fixing component 121. Instead, the retaining ring 1223 provides support to the elastic member 1222, so as to prevent the second end of the elastic member 1222 from getting stuck on the connection surface between the support component 122 and the fixing component 121. This prevents the elastic force applied by the elastic member 1222 to the support component 122 from being less than the expected force, and thus prevents the support component 122 from sagging. Furthermore, when the support assembly 122 and the fixing assembly 121 are in a state of mutual movement, there is a first gap B between the fixing assembly 121 and the support assembly 122. The thickness of the retaining ring 1223 is greater than the first gap B. Thus, by making the thickness of the retaining ring 1223 greater than the first gap B, the retaining ring 1223 is prevented from completely disengaging from the receiving groove 1221 when the support assembly 122 and the fixing assembly 121 are in a state of mutual movement, ensuring that the second end of the elastic member 1222 is always in contact with the retaining ring 1223.

[0056] Among them, reference Figure 4 In a preferred embodiment, the thickness of the retaining ring 1223 is greater than or equal to the sum of the first gap B and a preset difference, wherein the preset difference is greater than or equal to 1.5 mm and less than or equal to 2.5 mm. This preset difference is a tolerance compensation dimension that takes into account the manufacturing tolerances of the retaining ring 1223. Of course, this preset difference can also be set to different values ​​depending on the precision of the processing technology used; this embodiment does not impose any limitations on this.

[0057] In some implementations, the helix angle of the first and second threads is smaller than the equivalent friction angle of the first and second threads, thereby achieving thread self-locking between the first and second threads. It can be understood that the mechanical essence of thread self-locking is that the frictional torque between the first and second threads (i.e., between the threaded pairs) must be greater than the loosening torque caused by the axial load; when the helix angle is smaller than the equivalent friction angle, the tangential component of the axial load generated on the thread contact surface (the force that causes loosening) is less than the maximum static friction force. At this time, the first and second threads (i.e., the threaded pairs) cannot slide on their own, thus achieving self-locking. The helix angle of the first and second threads can be calculated from the pitch and the thread pitch diameter, and the equivalent friction angle of the first and second threads can be calculated from the friction coefficient and the thread profile half-angle; the specific calculation formulas are not elaborated here.

[0058] In the specific working process, when the drive device 125 drives the rotating part 124 to rotate to a preset angle, so that the bracket assembly 122 and the fixed assembly 121 are fixed, the drive device 125 does not need to provide driving force. The rotating part 124 and the locking shaft 123 can also rely on the self-locking effect between the first thread and the second thread to ensure the mutual fixation of the bracket assembly 122 and the fixed assembly 121, so as to avoid loosening and fixation failure between the bracket assembly 122 and the fixed assembly 121.

[0059] Furthermore, in some embodiments, the first thread and the second thread can be configured as T-type threads. Compared with ordinary triangular threads, rectangular threads, sawtooth threads, and other thread forms, T-type threads have less friction loss and higher transmission efficiency. Moreover, the tooth angle of T-type threads is usually 30°, which balances strength and wear resistance and has a strong load-bearing capacity. Therefore, T-type threads are suitable for scenarios such as the locking shaft 123 and the rotating part 124 in this application, which require the ability to withstand large loads and high wear resistance.

[0060] In some embodiments, the bracket assembly 122 has a first shaft hole 1224, and the locking shaft 123 passes through the first shaft hole 1224. Thus, one end of the locking shaft 123 is connected to the fixing assembly 121, and the other end of the locking shaft 123 can pass through the first shaft hole 1224 and extend out of the bracket assembly 122, thereby extending into the locking hole 111.

[0061] Reference Figure 3 , Figure 5 and Figure 6 In some embodiments, the rotating member 124 is provided with a positioning member 126, which is fixedly connected to the rotating member 124. Therefore, the positioning member 126 can rotate with the rotating member 124. The positioning member 126 protrudes radially from the outer periphery of the rotating member 124, so that the portion of the positioning member 126 protruding from the outer periphery of the rotating member 124 triggers a sensor. The positioning member 126 can be configured as a lever. The lock body 12 also includes a first sensor 127 and a second sensor 128. When the rotating member 124 rotates to a first angle, the bracket assembly 122 locks with the fixing assembly 121, and the positioning member 126 triggers the first sensor 127 to output a locking signal. When the rotating member 124 rotates to a second angle, the bracket assembly 122 unlocks from the fixing assembly 121, and the positioning member 126 triggers the second sensor 128 to output an unlocking signal.

[0062] Both the first sensor 127 and the second sensor 128 can be configured as touch sensors, such as sensors with push switches. When the rotating member 124 rotates to the first angle, the rotating member 124 touches the touch part of the first sensor 127, thereby causing the first sensor 127 to output a locking signal, so that the external communication device electrically connected to the first sensor 127 can know that the locking mechanism 10 has been successfully locked (i.e., the bracket assembly 122 and the fixing assembly 121 are pressed and fixed). Similarly, when the rotating member 124 rotates to the second angle, the rotating member 124 touches the touch part of the second sensor 128, thereby causing the second sensor 128 to output an unlocking signal, so that the external communication device electrically connected to the second sensor 128 can know that the locking mechanism 10 has been successfully unlocked (i.e., the bracket assembly 122 and the fixing assembly 121 move relative to each other).

[0063] Furthermore, the first sensor 127 and the second sensor 128 can both be configured as non-contact sensors such as infrared sensors, photoelectric sensors, and ultrasonic sensors. When the rotating member 124 rotates to the first angle, the rotating member 124 blocks the detection signal transmitting part of the first sensor 127, causing the signal transmission detected by the signal receiving part of the first sensor 127 to change, thereby causing the first sensor 127 to output a locking signal, so that the external communication device electrically connected to the first sensor 127 can know that the locking mechanism 10 has been successfully locked. Similarly, when the rotating member 124 rotates to the second angle, the rotating member 124 blocks the detection signal transmitting part of the second sensor 128, causing the signal transmission detected by the signal receiving part of the second sensor 128 to change, thereby causing the second sensor 128 to output a locking signal, so that the external communication device electrically connected to the second sensor 128 can know that the locking mechanism 10 has been successfully unlocked.

[0064] Of course, one of the first sensor 127 and the second sensor 128 may be a touch sensor, and the other of the first sensor 127 and the second sensor 128 may be a non-touch sensor; this is not a limitation.

[0065] Reference Figure 2 , Figure 5 and Figure 6 In some embodiments, the support assembly 122 is further provided with a blocking member 1225, which is connected to the support assembly 122. The first sensor 127, the second sensor 128 and the blocking member 1225 are arranged circumferentially along the rotating member 124. The blocking member 1225 is located on the side of the second sensor 128 facing away from the first sensor 127. The blocking member 1225 is used to block the positioning member 126.

[0066] In this embodiment, since the rotating member 124 may continue to rotate beyond the second angle after rotating to the second angle when any component such as the second sensor 128 or the driving device 125 fails, other components on the bracket assembly 122 (such as dustproof covers, enclosure locking pins, etc.) may be damaged by the rotating member 124 and the positioning member 126. Therefore, this embodiment provides a blocking member 1225 on the bracket assembly 122 and places the blocking member 1225 on the side of the second sensor 128 facing away from the first sensor 127. Thus, after the positioning member 126 rotates beyond the second angle, the positioning member 126 will be blocked by the blocking member 1225, thereby preventing the rotation of the rotating member 124 and avoiding damage to the components on the bracket assembly 122.

[0067] In some embodiments, the angle difference between the first angle and the second angle is less than or equal to 180°, thereby making the rotation angle of the positioning member 126 smaller, so that the first sensor 127 and the second sensor 128 can be arranged at the same height in the bracket assembly 122 without staggering their heights. In addition, since the positioning member 126 needs to have a certain width to trigger each sensor, given that the positioning member 126 is relatively wide, it already occupies a certain angle, making it inconvenient to set the angle difference between the first angle and the second angle too large, otherwise it will affect the setting of other components.

[0068] Furthermore, the positioning member 126 is made of metal; and / or, the blocking member 1225 is made of metal. Since the torque transmitted from the drive device 125 to the rotating member 124 is large, reaching thousands of Newton-meters (N·m), the positioning member 126 and the blocking member 1225 need to withstand a large load when the blocking member 1225 blocks the positioning member 126. The positioning member 126 and the blocking member 1225, made of metal, can withstand a large load, ensuring that the blocking member 1225 and the positioning member 126 can generate sufficient resistance in the event of an over-rotation failure of the rotating member 124.

[0069] Reference Figure 2 , Figure 3 and Figure 5In some embodiments, the positioning member 126 is provided with at least one opening 1261, and the rotating member 124 is provided with a limiting hole corresponding to the opening 1261. The length of the opening 1261 along the circumferential direction of the locking shaft 123 is greater than or equal to the diameter of the limiting hole, so that the positioning member 126 can be adjusted to a fixed position before leaving the factory, reducing the precision control requirements for a series of assembly links such as the rotating member 124. The bracket assembly 122 also includes a limiting member 1226. One end of the limiting member 1226 passes through the opening 1261 and is limited and engaged with the limiting hole. The other end of the limiting member 1226 presses the positioning member 126 between the limiting member 1226 and the rotating member 124, thereby constraining the degree of freedom of movement of the positioning member 126 along the axial direction (X-axis direction) of the locking shaft 123, as well as constraining the degree of freedom of rotation of the positioning member 126 around the Y-axis direction and the Z-axis direction.

[0070] The limiting member 1226 can be a threaded fastener, such as a bolt, and the limiting hole can be a corresponding threaded hole. One end of the threaded fastener passes through the opening 1261 and is threaded into the threaded hole. The other end of the threaded fastener presses the positioning member 126 between the limiting member 1226 and the rotating member 124.

[0071] Reference Figure 5 In some embodiments, the positioning member 126 has a second shaft hole 1262, and the positioning member 126 is sleeved on the locking shaft 123 through the second shaft hole 1262. In this way, the degree of freedom of movement of the positioning member 126 along the radial direction of the locking shaft 123 is further constrained. In addition, combined with the constraint of the positioning member 1226 mentioned above, the degree of freedom of the positioning member 126 is completely restricted, thereby realizing the fixed connection between the positioning member 126 and the rotating member 124.

[0072] Reference Figures 2 to 3 In some embodiments, the support assembly 122 has a protrusion 1227 at one end facing the fixing assembly 121. The protrusion 1227 protrudes from the support assembly 122 in the opposite direction of the first direction and is used to abut against the fixing assembly 121. It can be understood that at least one end face of the support assembly 122 abuts against the fixing assembly 121, and this at least one end face of the support assembly 122 is the protrusion 1227 in this embodiment.

[0073] In this embodiment, a protruding structure 1227 is provided, which protrudes from the support assembly 122. The protruding structure 1227 is responsible for pressing against the fixing assembly 121. Since the driving device 125 drives the rotating component 124, the protruding structure 1227 and the fixing assembly 121 will generate a large pressing force. Therefore, a special protruding structure 1227 is provided to bear the load, so as to ensure the reliability of the structure. Furthermore, since the locking shaft 123 in this application mainly constrains the degrees of freedom of the locking hole 111 in the Y-axis and Z-axis directions, the locking shaft 123 will be subjected to large loads from the Y-axis and Z-axis directions. When the load on the locking shaft 123 from the Y-axis and Z-axis directions is too large, the protruding structure 1227 will tilt or flip relative to the fixing component 121. In this embodiment, when the protruding structure 1227 tilts or flips relative to the fixing component 121, the bracket assembly 122 can abut against the fixing component 121 and provide auxiliary support, which not only avoids further tilting or flipping of the protruding structure 1227, but also shares the load on the protruding structure 1227, preventing the protruding structure 1227 from being damaged due to excessive local stress. The protruding structure 1227 can be integrally formed with the bracket assembly 122, or the protruding structure 1227 can be separately formed and connected and fixed with the bracket assembly 122. This embodiment does not limit this.

[0074] Reference Figure 4 In some embodiments, the protrusion of the protrusion 1227 in the reverse direction of the first direction from the support assembly 122 is 0.3 mm to 1.2 mm, that is, the dimension C of the protrusion C of the protrusion 1227 in the reverse direction of the first direction from the support assembly 122 is greater than or equal to 0.3 mm and less than or equal to 1.2 mm. The design of the protrusion 1227 protruding from the support assembly 122 by a dimension C of 0.3 mm to 1.2 mm in this embodiment allows the support assembly 122 to abut against the fixing assembly 121 and provide auxiliary support when the protrusion 1227 undergoes a small degree of tilting or overturning. This allows the support assembly 122 to promptly share the load of the protrusion 1227, effectively avoiding the problem of excessive local stress in the protrusion 1227.

[0075] In one preferred embodiment, the protrusion of the protrusion 1227 in the opposite direction of the first direction from the support assembly 122 is 0.5 mm to 1.0 mm. That is, the protrusion of the protrusion 1227 in the opposite direction of the first direction from the support assembly 122 is greater than or equal to 0.5 mm and less than or equal to 1.0 mm. This ensures that the protrusion amplitude of the protrusion 1227 relative to the support assembly 122 is within a more suitable range. This ensures that the support assembly 122 can provide auxiliary support when the protrusion 1227 experiences a small degree of tilting or overturning, and avoids the overall structural stability from decreasing due to excessive protrusion amplitude. It also avoids the support assembly 122 from contacting the protrusion 122 too early due to excessively small protrusion amplitude between the protrusion 1227 and the support assembly 122, which would result in the support assembly 122 bearing too much load.

[0076] In some embodiments, the rotating member 124 is configured as a locking gear, and the output end of the drive device 125 is provided with a transmission gear, which meshes with the locking gear. This embodiment employs a gear transmission system. Compared to other transmission systems, the gear transmission system, due to the meshing of the gears, can withstand larger loads and transmit sufficiently large torques. This allows the drive device 125 to provide a sufficiently large torque to the locking gear, enabling the bracket assembly 122 and the fixing assembly 121 to fully press against each other and achieve fixation.

[0077] Furthermore, since direct meshing may be limited by the relative position of the drive unit 125 and the locking gear, a secondary transmission gear can also be provided between the locking gear and the transmission gear of the drive unit 125. The transmission gear meshes with the secondary transmission gear, and the secondary transmission gear meshes with the locking gear. This allows for more flexible placement of the locking gear and the drive unit 125. The addition of the secondary transmission gear allows for flexible adjustment of the transmission path and optimization of the spatial layout. It should be noted that one or more secondary transmission gears can be provided, and the specific number of secondary transmission gears can be selected according to actual spatial layout requirements; this is not limited here.

[0078] In some embodiments, the fixing component 121 is used to connect to the vehicle body bracket, or the fixing component 121 is integrally formed with the vehicle body bracket. When the fixing component 121 is connected to the vehicle body bracket, it may have multiple connection holes to allow fasteners to connect it to the vehicle body bracket. Alternatively, the fixing component 121 may be welded to the vehicle body bracket, or other connection methods may be used. The integral forming of the fixing component 121 with the vehicle body bracket reduces the assembly steps between the fixing component 121 and the vehicle body bracket, thus reducing the need for manual assembly.

[0079] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A lock mechanism, characterized in that The locking mechanism comprises: a matching structure provided with a lock hole; a lock body comprising a fixed assembly and a bracket assembly, the bracket assembly being provided with a lock shaft, a rotating member and a driving device, one end of the lock shaft being connected with the fixed assembly, the other end of the lock shaft extending out of the bracket assembly and into the lock hole; the rotating member being in transmission connection with the driving device, the outer periphery of the lock shaft being provided with a first thread, the inner periphery of the rotating member being provided with a second thread, the second thread being in matching connection with the first thread; the driving device being used to drive the rotating member to rotate, so as to drive the bracket assembly to move along the axial direction of the lock shaft through the rotating member, so that at least one end surface of the bracket assembly is pressed against and fixed with the fixed assembly.

2. The locking mechanism of claim 1, wherein The other end of the lock shaft extends into the lock hole along a first direction; An accommodating groove is formed in the end surface of the bracket assembly facing the fixed assembly, and an elastic member is arranged in the accommodating groove, a first end of the elastic member being connected with the accommodating groove, a second end of the elastic member being in abutment with the fixed assembly, the elastic member being used to apply an elastic force along the first direction to the bracket assembly.

3. The locking mechanism of claim 2, wherein, A retaining ring is further arranged in the accommodating groove, the retaining ring being arranged between the fixed assembly and the second end of the elastic member, the second end of the elastic member being in abutment with the retaining ring, the retaining ring being in abutment with the fixed assembly; In a state where the bracket assembly and the fixed assembly are movable relative to each other, a first gap is formed between the fixed assembly and the bracket assembly, and the thickness of the retaining ring is greater than the first gap.

4. The locking mechanism of claim 2, wherein The elastic member is a wave spring.

5. The locking mechanism according to any one of claims 1 to 4, wherein The thread angles of the first thread and the second thread are less than the equivalent friction angles of the first thread and the second thread.

6. The locking mechanism of any one of claims 1 to 4, wherein, The bracket assembly is provided with a first shaft hole, and the lock shaft is arranged in the first shaft hole.

7. The locking mechanism of any one of claims 1 to 4, wherein, The rotating member is provided with a positioning member, the positioning member being fixedly connected with the rotating member and protruding outward from the outer periphery of the rotating member along the radial direction of the rotating member; The lock body further comprises a first sensor and a second sensor; in a state where the rotating member is rotated to a first angle, the bracket assembly is locked with the fixed assembly, and the positioning member triggers the first sensor, so that the first sensor outputs a locking signal; in a state where the rotating member is rotated to a second angle, the bracket assembly is unlocked with the fixed assembly, and the positioning member triggers the second sensor, so that the second sensor outputs an unlocking signal.

8. The locking mechanism of claim 7, wherein The bracket assembly is further provided with a blocking member, the blocking member being connected with the bracket assembly, the first sensor, the second sensor and the blocking member being arranged along the circumferential direction of the rotating member, the blocking member being arranged on the side of the second sensor away from the first sensor, and the blocking member being used to block the positioning member.

9. The locking mechanism of claim 8, wherein The angle difference between the first angle and the second angle is less than or equal to 180°; The positioning member is made of metal; The blocking member is made of metal.

10. The locking mechanism of claim 7, wherein, The positioning member is provided with at least one opening, the rotating member is provided with a limiting hole corresponding to the opening, the length of the opening along the circumference of the lock shaft is greater than or equal to the diameter of the limiting hole; the support assembly further comprises a limiting member, one end of the limiting member passes through the opening and is in limiting fit with the limiting hole, and the other end of the limiting member presses the positioning member between the limiting member and the rotating member.

11. The locking mechanism of claim 10, wherein, The positioning member is provided with a second shaft hole, and the positioning member is sleeved on the lock shaft through the second shaft hole.

12. The locking mechanism of claim 2, wherein The support assembly is provided with a protruding structure at one end thereof towards the fixed assembly, the protruding structure protrudes from the support assembly in the reverse direction of the first direction, and the protruding structure is used for abutting against the fixed assembly.

13. The locking mechanism of claim 12, wherein, The protruding structure protrudes from the support assembly in the reverse direction of the first direction by 0.3mm to 1.2mm.

14. The locking mechanism of any one of claims 1 to 4, wherein, The rotating member is a locking gear, the output end of the driving device is provided with a transmission gear, and the transmission gear is in mesh with the locking gear.

15. The locking mechanism of any one of claims 1 to 4, wherein, The fixed assembly is used for being connected with a vehicle body support, or the fixed assembly is integrally formed with the vehicle body support.

16. A traffic device, characterized by Comprise: A land vehicle, the land vehicle having a fixed end; An aircraft; The locking mechanism of any one of claims 1 to 15, the lock body of the locking mechanism being connected with the fixed end, the matching structure of the locking mechanism being mounted on the aircraft, and the aircraft being used for being connected with the land vehicle to make the lock shaft of the lock body extend into the lock hole of the matching structure; The driving device of the lock body is used for driving the rotating member of the lock body to fix the support assembly of the lock body with the fixed assembly of the lock body.

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