Ground lock and management system

Abstract

The invention discloses a parking lock and a management system, and the parking lock comprises a base body; the lock part is rotationally mounted on the base body through a horizontal overturning shaft; the worm and gear mechanism is mounted on the base body, and a matched worm gear is connected with the turnover shaft; the power machine is provided with an output shaft, a worm of the worm and gear mechanism is connected with the output shaft in the circumferential direction, and the worm has the axial degree of freedom relative to the output shaft and is limited in a preset floating interval in the axial direction; and the elastic component provides axial force acting on the worm in the direction far away from the output shaft, so that the worm is biased in the direction far away from the output shaft in the floating section. According to the parking lock structure, the reliability of the parking lock is relatively good.

Description

Technical Field

[0001] This invention relates to a floor lock, and also to a management system equipped with the floor lock. Background Technology

[0002] Ground locks are primarily used as parking space locks, but are not limited to them. A ground lock can be defined as a mechanical device installed on the ground with a lifting locking mechanism. There are relatively many types of lifting locking mechanisms, one of which is based on rotation (swinging) to achieve lifting. Once the locking mechanism is raised, it is in the working state of the ground lock, which is the working part that blocks vehicles. In this working state, it is easily affected by impacts from vehicle wheels or frames. Currently, there are three main ways to address the damage caused by these impacts. One is to use an integrated structure. In this structure, the locking mechanism is a vertically lifting locking arm, which is included in a lifting assembly, typically including a motor and a transmission mechanism. The transmission mechanism converts the rotational motion of the motor into the up-and-down movement of the locking arm. Furthermore, a rubber pad is placed above the locking arm to directly absorb the impact. The direction of the impact force in this method is often not consistent with the direction of movement of the locking mechanism. Under more impact conditions, the direction of the impact force is basically perpendicular to the direction of movement of the locking mechanism. Although this can effectively protect the transmission parts, it is prone to damage to the base and shell of the ground lock.

[0003] The second method is to directly use components with relatively high inherent strength to manufacture the parking lock. This method is simple and direct, but in addition to considering the strength of the parking lock itself, the connection strength between the parking lock and the ground also needs to be considered. In many applications, the actual strength requirement for the parking lock is not high; that is, under normal conditions, the strength of the parking lock is lower than, for example, the strength of the vehicle chassis, and therefore usually insufficient to damage the vehicle chassis. Currently, improvements to parking locks through self-reinforcement mainly focus on preventing plastic deformation of parts such as the housing when subjected to vehicle pressure, rather than on the parts that stop the vehicle.

[0004] The third method can be understood as an avoidance type. Because it can identify forces such as impacts and control the state of the lock, it can be called a smart parking lock. In this type, the component used to stop the car is a swing arm. When the swing arm of the smart parking lock is impacted, corresponding sensors monitor the force on the arm. If the detected force exceeds a set value, the swing arm will descend and rise again after a few seconds. This method deviates from the original design requirements of parking locks. Although people will consciously avoid collisions between their vehicles and the locks, if car owners realize that a collision will not damage their vehicles and they can break free from the lock's restraint, the management of parking spaces equipped with such locks will become uncontrollable.

[0005] In view of this, current research and development should focus on avoiding or reducing damage to parking locks without causing vehicles to detach from them. Therefore, Chinese patent document CN221398759U proposes a parking lock with a flexible transmission component. The "flexibility" of this component cushions the parking lock's barrier assembly when impacted, for example, by a vehicle, reducing damage to the power or transmission components. The flexible transmission component used in this patent document is likely a steel strand, its main purpose being to extend the power used to open and close the barrier assembly to a relatively distant location from the parking lock, thus preventing failure after flooding. The flexible transmission component itself has a certain ability to resist rigid impacts. Simultaneously, the drive shaft sleeve of the barrier assembly is mounted on the drive shaft via a first elastic reset member. Although the patent document does not specify whether the first elastic reset member provides cushioning when the barrier assembly is impacted, the inventors believe that the first elastic reset member has a certain cushioning capability in the reverse reset direction. It should be understood that a mechanism is a collection of components with a definite motion relationship. The presence of the first elastic reset member can protect the barrier assembly. However, the inventors believe that when the barrier assembly moves, the drive mechanism used to drive the barrier assembly will also move. This passive movement of the drive mechanism can easily cause damage or destruction to the drive mechanism and the power machine. Summary of the Invention

[0006] Considering that the lock should not be rigidly arranged or have excessive travel when facing impacts such as from vehicles, the purpose of this invention is to provide a ground lock with relatively good structural reliability. This invention also provides a management system equipped with this ground lock.

[0007] According to a first aspect of the present invention, a floor lock is provided, comprising: Matrix; The locking part is rotatably mounted on the base via a horizontal flipping shaft; A worm gear mechanism is mounted on the base, and the worm gear is connected to the tilting shaft; A power unit having an output shaft, wherein the worm of the worm gear mechanism is circumferentially connected to the output shaft, and the worm has axial freedom relative to the output shaft and is axially confined within a predetermined floating range; and An elastic component provides an axial force acting on the worm gear in a direction away from the output shaft, so as to bias the worm gear in a direction away from the output shaft within the floating range.

[0008] Optionally, the output shaft and the worm gear are connected by a profile connection, a spline connection, a sliding key connection, or a flat key connection.

[0009] Optionally, the elastic component is a spring, which is fitted onto a corresponding worm or a given sleeve. One end of the spring slides or rolls with the worm teeth, and the other end is supported or rested on a given statically determinate component or structure.

[0010] Optionally, the worm gear mechanism is disposed within a transmission box; The elastic component is located inside the transmission box.

[0011] Optionally, the worm gear shaft and the tilting shaft are connected or fixed together by a coupling.

[0012] Optionally, the coupling is a flexible coupling.

[0013] Optionally, the flipping shaft and / or the locking part are equipped with a reset device.

[0014] Optionally, both ends of the flipping shaft are mounted on the base via predetermined bearing seats; Each end of the rotating shaft is equipped with a compartment, one of which is the power compartment with the power unit, and the other is the auxiliary compartment.

[0015] Optionally, the sealing level of the engine compartment should be at least IP57.

[0016] Optionally, it is equipped with at least an image and / or video acquisition device for license plate recognition; The image and / or video acquisition device is located in the power compartment or auxiliary compartment; Accordingly, the power compartment or auxiliary compartment equipped with the image and / or video acquisition device has a viewing window.

[0017] Optionally, the power compartment is equipped with a battery and / or has an external power source to power the electrical equipment of the ground lock.

[0018] Optionally, a limit device is provided for limiting the locking part to its stop point.

[0019] Optionally, the limiting device is a rigid limiting part or a limiting part with a flexible body that is fitted onto the flip shaft, the locking part or the base.

[0020] Optionally, when the rigid limiting part is provided on the flip shaft, it is provided at 1 to 3 of the three positions at both ends and the middle of the flip shaft.

[0021] Optionally, the rigid limiting part is an eccentric plate mounted on the flipping shaft. During the flipping stroke of the lock part, the eccentric plate disengages from the predetermined fixing part and engages with the fixing part at the limiting position.

[0022] Optionally, the locking part is a flip plate mounted on the flip shaft, the flip plate is a strip, and the flip shaft is located at the first edge of the flip plate along the strip direction.

[0023] Optionally, when the flip plate is in the stored state, the flip shaft is located on the lower side of the flip plate, and the second edge of the flip plate, which is opposite to the first edge of the plate, is supported on the base.

[0024] Optionally, the second plate edge is provided with a roller.

[0025] Optionally, a sloping panel is provided on the second side of the flip shaft; Accordingly, when the flip plate is in the stored state, a double-slope structure with the flip plate and the slope plate forming a ridge above the flip axis is formed.

[0026] According to a second aspect of the present invention, a management system is provided for managing parking spaces using the parking locks described in the first aspect of the present invention.

[0027] The ground lock provided in the embodiments of the present invention includes a base and a locking part mounted on the base via a flip shaft, meaning the ground lock based on the embodiments of the present invention is a flip-type ground lock. Furthermore, in the embodiments of the present invention, a worm gear mechanism capable of achieving a large transmission ratio is used as the transmission mechanism. This allows for the output of a relatively large torque under conditions of relatively low power from the power unit, and when the worm gear is subjected to a reaction force, reversal is relatively difficult, thus maintaining a good state of the locking part; that is, the worm gear mechanism has a certain self-locking function. However, when the worm gear is subjected to a large reaction force, it will generate a relatively large axial force on the worm, which may damage or destroy the power unit. In the embodiments of the present invention, the connection between the power unit and the worm gear mechanism is a circumferential connection, preserving the worm's axial degree of freedom. This allows the worm to have a certain floating space in the worm's axial direction, thereby providing an elastic component to provide an opposing elastic force when the worm moves axially due to a reaction force, thus forming a buffer and a reset. Therefore, while ensuring relatively small changes in the locking part's state, a certain degree of buffering is provided, which can meet the requirements for, for example, vehicle locking, while effectively protecting the power unit, and has relatively good overall reliability. Attached Figure Description

[0028] Figure 1 This is a top view of the ground lock in its retracted state in one embodiment (the power compartment is in the open state in the figure).

[0029] Figure 2 for Figure 1 AA section view (2:1 magnification).

[0030] Figure 3 for Figure 2 Enlarged view of part I.

[0031] Figure 4 for Figure 1 BB cross-sectional view.

[0032] Figure 5 for Figure 1 CC section view.

[0033] Figure 6 for Figure 5 Enlarged view of Part II.

[0034] Figure 7 for Figure 1 FF sectional view.

[0035] Figure 8 This is a schematic diagram of the structure between the flipping plate and the flipping power unit in one embodiment.

[0036] Figure 9 This is a top view of the ground lock in operation in one embodiment (the power compartment is in the open state).

[0037] Figure 10 for Figure 9 HH section view (2:1 magnification).

[0038] Figure 11 This is a schematic diagram of the internal structure of the power compartment in one embodiment.

[0039] Figure 12 for Figure 11 Enlarged view of Part III.

[0040] In the diagram: 1. Housing, 2. Mounting hole, 3. Sensor, 4. Transmission box, 5. Worm gear, 6. Torsion spring, 7. Rectangular spring, 8. Hex head screw, 9. Powertrain, 10. Eccentric plate, 10'. Eccentric plate (corresponding to the working state of the flip plate), 11. Flip shaft, 12. Flip plate, 13. Roller shaft, 14. Sub-compartment, 15. Sloping panel, 16. Conduit, 17. Rectangular spring, 19. Seat plate, 20. Countersunk screw, 21. Worm gear, 22. Worm gear shaft, 23. Coupling hole, 24. Worm gear shaft, 25. Power shaft, 26. Battery compartment, 27. Rounded corner, 28. Connecting hole, 29. Flanged edge, 30. Support beam, 31. End plate, 32. Reinforcing plate, 33. Reinforcing plate, 34. Anchor bolt hole, 35. Support plate.

[0041] 251. Profile. Detailed Implementation

[0042] In the embodiments of the present invention, the provided floor lock is a floor lock with a flip shaft 11. Based on the rotation angle control of the flip shaft 11, the flip plate 12 can be flipped to have a working state (expanded state) and a avoidance state (retracted state). For example, the flip plate 12 usually does not have an intermediate state, that is, the unfolded state and the retracted state usually correspond to a relatively fixed stop position of the flip shaft 11, which can be defined as the unfolded position and the retracted position, respectively.

[0043] In contrast, the tilting shaft 11 is typically installed horizontally at a predetermined location, such as in a parking space, usually at the midpoint of the parking space in the left-right direction. For ease of description, the axial, circumferential, and radial directions are determined based on the parameters of the tilting shaft 11, and in embodiments of the present invention, unless otherwise specified, this technical reference system is used as the basis. In some descriptions, the axial direction of the tilting shaft 11 is defined as the length direction, which corresponds to the lateral direction of the parking space relative to the parking space. Using the parking space as a reference, the length direction of the tilting shaft 11 corresponds to the width of the parking space.

[0044] The locking part installed on the flip shaft 11 can be either a rod, such as the T-shaped locking part of a T-type parking lock or the U-shaped locking part of a U-type parking lock, or a plate, such as... Figure 8 The flip plate 12 shown can also be a single-bar or double-bar rod-type lock. Regarding the selection of the lock in the embodiments of the present invention, any existing parking lock can be used as long as it can be driven by the flip shaft 11; further details are omitted here.

[0045] exist Figure 1 In the illustrated structure, the ground lock has two main compartments: a power compartment on the left and a secondary compartment 14 on the right. To highlight the equipment within the power compartment, [further details are needed]. Figure 1 The example structure omits the engine compartment hatch (also referred to as the cover below).

[0046] exist Figure 2 and Figure 4 In the illustrated structure, a base plate 19 is provided. The base plate 19 mainly serves as a base for mounting other components of the floor lock. In the following text, unless the base plate 19 is directly mentioned, the term "base" is used to refer to any base, including but not limited to the base plate 19, used for the direct or indirect mounting of other components of the floor lock. Obviously, the base plate 19 is a statically determinate component, while other parts attached to the base plate 19, such as the housing 1, can also serve as components of the base.

[0047] The base portion of the substrate can adopt a plate structure like the base plate 19, which is relatively simple overall and facilitates the pre-setting of, for example, anchor bolt holes 34, and mounting holes for components mounted on the base plate 19, etc., through methods such as opening holes. For example... Figure 1 The housing 1 shown can be, for example, Figure 2The countersunk screw 20 shown is mounted on the base plate 19. Figure 2 In the diagram, countersunk screw 20 is shown as the assembly of powertrain 9, but for plate structures like seat plate 19, components directly connected to seat plate 19 can be assembled by, for example, by screws or bolts passing through from the bottom surface upwards.

[0048] In embodiments of the present invention, a worm gear mechanism is used as a transmission mechanism to realize the transmission between the power machine and the tilting shaft 11. A typical feature of the worm gear mechanism is that it can realize transmission between intersecting shafts, such as... Figure 1 The transmission between the mutually perpendicular worm gear 5 and the tilting shaft 11 utilizes this typical characteristic to make the lateral dimensions of the parking lock relatively compact, given a fixed width of the tilting plate 12. Meanwhile, since the longitudinal dimension has a relatively small impact on, for example, vehicles, the longitudinally arranged power compartment in the parking space, while also considering compactness, sacrifices longitudinal compactness for better lateral compactness are more valuable because, when parking, vehicles are more likely to deviate laterally than longitudinally. Clearly, when a vehicle deviates laterally, for example, the power compartment or auxiliary compartment 14 is more likely to collide with another vehicle. Therefore, a relatively compact lateral dimension of the parking lock reduces the probability of such collisions.

[0049] Another characteristic of worm gear mechanisms is their large transmission ratio and compact structure. This feature allows for a more compact power compartment structure, especially in terms of height, while maintaining the same transmission ratio. It should be noted that for parking locks, the most compact structure is when the lock is retracted; in this case, its height should not exceed the ground clearance of the corresponding vehicle chassis. Therefore, a relatively compact power compartment achieved through a worm gear mechanism is more valuable.

[0050] Another characteristic of worm gear mechanisms is their low transmission efficiency. However, in the embodiments of this invention, the driven object is, for example, the tilting plate 12, which is a lightly loaded object compared to general driving objects in engineering applications. From the perspective of state transformation alone, the low transmission efficiency does not have a significant negative impact on the achievement of the purpose of this invention. Low transmission efficiency is often related to self-locking, and worm gear mechanisms possess a certain degree of self-locking. This is manifested when the lead angle of the worm 5 is less than the equivalent friction angle of the meshing worm wheel 21; in this case, the worm 5 can only drive the worm wheel 21 as the driving element, and the worm wheel 21 cannot drive the worm 5. When the worm wheel 21 generates a given torque due to, for example, the collision of the tilting plate 12 with, for example, a vehicle chassis, although the worm 5 will not be driven, it will experience a relatively large axial force exerted by the worm wheel 21.

[0051] Furthermore, the self-locking property of the worm gear mechanism is used to prevent the tilting plate 12 from losing its working position under a tolerable impact. However, it should be noted that in the embodiments of this invention, a worm gear mechanism with self-locking capability is not required. Even if a worm gear mechanism without self-locking capability is used, it will be relatively difficult to drive the worm 5 using the worm wheel 21. For example, an electric motor has relatively poor resistance to axial forces (except for linear motors), but circumferential forces will generally not damage the motor. It should be understood that overload in the driving state is a separate issue. In the embodiments of this invention, the powertrain 9 stops after driving, for example, the tilting plate 12 to its position. In other words, when, for example, the tilting plate 12 is impacted by, for example, a vehicle chassis, the powertrain 9 is already in a stopped state, and the aforementioned overload problem will not occur.

[0052] As described above, using a worm gear mechanism can maintain the position of, for example, the tilting plate 12 effectively by means of the self-locking mechanism, even when the powertrain 9 is not continuously outputting power. A further technical issue to consider is the protection of the power unit under impact conditions on the tilting plate 12.

[0053] exist Figure 1 In the illustrated structure, the power unit is referred to as powertrain 9, which includes an electric motor and an optional reducer, typically a servo motor, brushless DC motor or stepper motor that can achieve precise control.

[0054] In an embodiment of the present invention, the ground lock can be self-powered, and a battery is arranged, for example, in the power compartment. The battery is powered by DC, and the motor of the corresponding powertrain 9 is preferably a DC motor.

[0055] The worm gear mechanism is directly or indirectly mounted on the base, as in... Figure 2 On the illustrated base plate 19, the worm gear mechanism is housed within a transmission box 4, which is fixed to the base plate 19 by bolts or screws. The transmission box 4 is connected to the tilting shaft 11 via its output shaft, i.e., the worm gear shaft 22, typically using a coupling.

[0056] Based on the foregoing description, the output shaft of the power unit is circumferentially connected to the worm of the worm gear mechanism to achieve rotational output, based on the drive mechanism. Simultaneously, based on the foregoing description, the worm 5 of the worm gear mechanism should have axial freedom relative to the output shaft of the power unit, while the axial movement of the worm 5 should not be too large, thus providing constraints and limiting the worm 5 to a predetermined floating range.

[0057] Accordingly, the axial position of the worm 5 in the worm gear mechanism should be fixed to ensure relatively good meshing between the worm 5 and the corresponding worm wheel 21. Its initial position is achieved by hard limiting, i.e., mechanical limiting.

[0058] The worm 5 is typically mounted in a transmission housing 4 using, for example, angular contact bearings or a combination bearing. In embodiments of the invention, the axial movement of the worm 5 is taken into account. Therefore, the bearings supporting the worm 5 are configured on, for example, axially movable bearing seats. These bearing seats can be positioned by a first constraint to ensure good meshing between the worm 5 and the worm wheel 21. In this case, the bearing seats can be limited on the side away from the powertrain 9 using, for example, a baffle or other constraint. On the side where the powertrain 9 is located, an elastic member is used to first maintain the worm 5 in its axial position to ensure good engagement with the worm wheel 21.

[0059] Accordingly, in terms of position, the elastic component is positioned on the side where the powertrain 9 is located, and the elastic force it provides is a force pointing towards the worm 5 from the side where the powertrain 9 is located, which is also the axial force of the worm 5. Relatively speaking, this axial force is also the axial force that moves the worm 5 away from the output shaft, i.e., the output shaft... Figure 3 The power shaft 25 shown is the output shaft of the powertrain 9.

[0060] The primary function of the elastic component is to bias the worm 5 away from the output shaft within the floating range. Even if the bearing housing of the worm 5 abuts against the aforementioned mechanical limit, the worm 5 floats towards the side where the power unit is located. When the worm wheel 21 experiences a relatively large axial force on the worm 5 due to an impact from, for example, the tilting plate 12, the worm 5 will undergo a certain amount of axial movement, and the worm wheel 21 will also experience a relatively small change in rotation angle. However, due to the existence of the floating space, the power unit will not be damaged or destroyed. Simultaneously, the floating space is confined within a predetermined range, preventing the tilting plate 12 from becoming displaced. In other words, under the condition that the power unit is not damaged overall, locking parts such as the tilting plate 12 will not become displaced, resulting in good structural reliability and vehicle-stopping reliability.

[0061] The following describes in detail the circumferential connection between the output shaft of the power unit and the worm gear 5, which retains axial freedom. Figure 12 The illustrated structure is a type of surface connection structure, which is used in, for example... Figure 12The drive shaft 25 shown has an axial degree of freedom when it is loosely fitted (in the mechanical field, interference fits and transition fits are called tight fits, while clearance fits are called loose fits) or when there is a clearance. Because part of the drive shaft 25 is removed, a profile 251 is formed. Correspondingly, the sleeve provided by the sleeve on the worm 5 can be a non-circular hole, forming a profile connection under these conditions, which enables torque transmission.

[0062] The sleeve hole can also be a perfect circle. In this case, it is often necessary to configure, for example, a wedge block fixed in the sleeve hole for cooperating with the profile 251, or an anti-rotation body that intervenes from the side hole at the position where the sleeve body is aligned with the center line of the profile 251, such as a block connected by screws.

[0063] In addition, keyed connections are a common type of connection in the mechanical field that can provide circumferential connections but have a degree of freedom in the axial direction. The most typical example is the spline connection, which has a relatively simple structure and will not be described in detail here.

[0064] For other keyed connections, except for hook keys and other keys with axial constraints, the aforementioned circumferential connections that retain axial degrees of freedom can generally be achieved.

[0065] Among them, spline connection has good reliability and high centering accuracy and can be regarded as a preferred structure. However, in some embodiments, since the circumferential connection that retains axial degree of freedom is directly provided by, for example, the motor shaft, it is not suitable to reprocess the motor shaft. Therefore, under this condition, spline connection is not the optimal choice.

[0066] However, in some embodiments, a sleeve may be fitted to, for example, a motor shaft, and the sleeve may have splines.

[0067] In addition, regarding the sleeve, for example, the part that mates with the drive shaft 25, it can be the coupling hole 23 directly machined from the worm shaft 24 of the worm 5, or it can be a sleeve fitted onto the end of the worm shaft 24.

[0068] In addition, the key connections available in the embodiments of the present invention may also include, for example, flat key connections, where the flat key can be a common type A flat key or a type C flat key.

[0069] Regarding the selection of the elastic component, a rectangular spring 7 is preferred because it has a large maximum load-bearing capacity and a relatively long service life. A disc spring assembly can also be used as the elastic component; disc spring assemblies also have a relatively large stiffness coefficient and a relatively compact structure.

[0070] In addition, ordinary cylindrical springs can still be used.

[0071] The rectangular spring 7 is a type of cylindrical spring. Obviously, this cylindrical spring is a compression spring. The spring can be fitted onto the non-helical toothed section of the corresponding worm 5. This section forms a spring guide post to prevent, for example, the rectangular spring 7 from becoming unstable.

[0072] In addition, the spring can be equipped with a spring guide post, which can be a sleeve. The sleeve is fitted onto the section of the worm 5 without helical teeth. The inner diameter of the sleeve is smaller than the major diameter of the helical teeth. Therefore, the spring guide post provided by the sleeve is an incomplete spring guide post and is mainly used as a spring seat.

[0073] Accordingly, the sleeve constituting the spring seat can be fixed in such a way as Figure 11 The transmission box 4 shown is on the panel facing the powertrain 9.

[0074] In addition, such as Figure 2 In the illustrated structure, the rectangular spring 7 is provided with thrust bearings 17 and 18 at both ends to reduce the resistance encountered by the worm 5 during rotation. Under this condition, only one thrust bearing 17 or thrust bearing 18 can be provided, in which case the rotation direction of the rectangular spring 7 relative to the worm 5 is statically constant.

[0075] In contrast, for example, a rectangular spring 7 is preferably in a rolling fit with the helical teeth of the worm, and in this case, a thrust bearing 17 as described above is fitted at this end of the rectangular spring 7.

[0076] Since the end face of the rectangular spring 7 is usually a flat end face and can be fitted with a fixed spring seat, under this condition, for example, the flat end face can be engaged with the helical teeth of the worm 5 in a joint manner, while the fit is a sliding fit.

[0077] In addition, one end of the rectangular spring 7 that is engaged with the helical teeth of the worm 5 can be fixedly connected to the worm 5, while the other end of the rectangular spring 7 is in rolling engagement with the transmission box 4 facing the power assembly 9 through the thrust bearing 18.

[0078] Regarding the aforementioned setting of the rectangular spring 7 under the condition of setting the transmission box 4, if the transmission box 4 is not set, then a bearing housing or other structure is required to accommodate the rectangular spring 7.

[0079] The worm gear mechanism is arranged in a transmission box 4, which is beneficial for providing lubrication to the worm gear pair. Accordingly, the transmission box 4 stores lubricating oil.

[0080] In some implementations, the worm gear pair can be lubricated with grease. If oil lubrication is used, the oil level in the transmission housing 4 should ensure that at least one-third of the worm wheel 21 is immersed in it, but the worm 5 usually needs to be fully exposed outside the oil sump defined by the transmission housing 4.

[0081] As mentioned above, when the support (when there is sliding or rolling friction between the rectangular spring 7 and the box plate) or the support (when the rectangular spring 7 and the box plate are fixedly installed) is provided by, for example, the box plate of the transmission box 4, the elastic component is located in the transmission box 4 accordingly.

[0082] Furthermore, based on the aforementioned floating space, the assembly of the worm gear 5 on, for example, the transmission housing 4, can be fitted with a corresponding bearing housing. The bearing housing primarily provides support for the worm gear 5 and bears axial and radial loads. For the movement of the bearing housing on the worm gear 5, additional components such as shaft bearings or other guiding structures can be used to guide the supporting portion of the worm gear 5, for example, the bearing housing supporting the worm gear 5.

[0083] Regarding the connection between the worm gear 21 and the rotating shaft 11, in some embodiments, the rotating shaft 11 can constitute the worm gear shaft 22, while in more embodiments, the rotating shaft 11 and the worm gear shaft 22 are independent shafts, which can be fixed together or connected by a coupling.

[0084] If a coupling is used, a flexible coupling is preferred, as it can buffer a certain amount of impact.

[0085] In addition, in some embodiments, the flip shaft 11 is provided with a reset device, while in other embodiments, the reset device may be configured on the lock part, and in still other embodiments, the reset device may be provided on both the flip shaft 11 and the lock part.

[0086] exist Figure 1 In the illustrated structure, inside the power box, a torsion spring 6 is provided at the shaft end of the flip shaft 11 to assist in the reset of the flip shaft 11.

[0087] In a preferred embodiment, the torsion spring 6 is arranged symmetrically, that is, one is provided at each end of the flip shaft 11.

[0088] In addition, a torsion spring 6 can be separately installed in the middle of the flip shaft 11.

[0089] In some embodiments, torsion springs 6 may be provided at both ends and the middle of the flip shaft 11 to make the overall reset control more reliable.

[0090] Regarding the setting of the torsion spring 6, if the flip plate 12 is, for example, the direct action object of the torsion spring 6, a relatively larger torsion spring 6 can be used, and it is generally set in the middle of the flip plate 12. One torsion spring 6 is sufficient to meet the usage requirements.

[0091] Regarding the support of the flip shaft 11, in the preferred embodiment, a bearing housing is used for support. The bearing housing used to support the flip shaft 11 can be a sliding bearing or a rolling bearing. The force form is relatively simple, mainly radial force, with almost no axial force. Therefore, a sliding bearing with a relatively simple structure can be selected.

[0092] The bearing should have a relatively good dustproof effect. It should be noted that the operating environment of the floor lock is relatively harsh. If rolling bearings are selected, bearings with covers can be selected, or the bearing housing for the flip shaft 11 can have a bearing chamber with relatively good sealing performance.

[0093] It should also be noted that, since the application scenarios of the flip shaft 11 in the floor lock are often not applications with high precision requirements, the support for the flip shaft 11 can be directly opened in a predetermined support hole, such as on the plate, to form the proposed sliding bearing structure.

[0094] exist Figure 1 In the illustrated structure, the end of the tilting shaft 11 is located in the power compartment and auxiliary compartment 14. The configuration of the compartments improves the working environment of the bearings fitted to the tilting shaft 11.

[0095] Similarly, the cabin structure also helps protect other components, especially electronic components, such as cameras or other sensors.

[0096] The power compartment is mainly used to install components such as the transmission box 4 and the powertrain 9 that drives the transmission box 4. For power supplies, for example... Figure 5 and Figure 10 The battery compartment 26 shown is preferably located within the power compartment.

[0097] Regarding auxiliary compartment 14, various sensors or other electronic components can be distributed in different compartments to avoid mutual interference between them.

[0098] In contrast, the auxiliary compartment 14, lacking a transmission system, can be positioned relatively low. The power compartment, however, is relatively high due to the presence of mechanical devices such as the transmission box 4. For example, cameras can be mounted in the power compartment, allowing for a higher camera position and easier identification of features such as license plates.

[0099] Components with relatively low height requirements can be configured in auxiliary compartment 14.

[0100] In addition, Figure 1 The illustrated structure is also equipped with a conduit 16 for electrical connections between the power compartment and the auxiliary compartment 14, i.e., for wiring.

[0101] Conduit 16 can be made of rigid pipe, such as galvanized steel pipe.

[0102] In addition, Figure 1 and Figure 9 As can be seen in the illustrated structure, the conduit 16 is also covered under the slope panel 15, which can directly face, for example, the rolling of a vehicle and has the rigidity to meet the rolling of a vehicle. Under this condition, the conduit 16 can be made of a pipe with relatively low rigidity but relatively good corrosion resistance, such as PVC pipe, PPR pipe or PC pipe.

[0103] Regarding the conduit 16, to facilitate cable routing, the conduit 16 can be a short pipe, for example, welded only to the structural panels of the two compartments. Cables located, for example, under the slope panel 15, do not require pipe support. In addition, cable routing holes can be provided on, for example, the reinforcing plate 32 on the underside of the slope panel 15 to provide auxiliary support for the cables.

[0104] Various electrical equipment also have relatively high requirements for the working environment. Therefore, for the power compartment and auxiliary compartment 14, the sealing level is not lower than IP57.

[0105] It should be noted that IP68 is actually the highest level of enclosure protection, but IP57 can provide protection against solid objects larger than 1mm, and in terms of waterproofing, it can ensure that the device can be completely immersed in water for a short period of time (usually 30 minutes) without damage.

[0106] For IP68 rating, there are even higher requirements, namely that the enclosure must be able to completely prevent foreign objects and dust from entering, and that the enclosure must be able to ensure that the equipment is not damaged by immersion in water even when submerged indefinitely under specified water pressure.

[0107] In embodiments of the present invention, the parts requiring protection are mainly those located within the equipment compartment, specifically the parts within the power compartment and auxiliary compartment 14, which have only two dynamic sealing points. Figure 1 The part of the tilting shaft 11 shown that mates with the two compartments.

[0108] Furthermore, in some embodiments, it is used for support Figure 1 The bearing housing at the right end of the central tilting shaft 11 can be located outside the auxiliary compartment 14, thereby reducing the difficulty of making the auxiliary compartment 14 more reliably sealed.

[0109] Regarding static sealing alone, an IP68 level seal can be easily achieved through a sealing structure, for example, by placing a sealing medium between the housing 1 and the cover. For instance, the housing 1 and the given cover are connected by a flange, and a rubber sealing ring is placed at the flange mating interface. Combined with bolt tightening, a very reliable seal can be achieved. It should be noted that, except in extremely harsh environments, the environments in which floor locks are used typically do not involve submersion in water to a depth of 1 meter. An IPx7 level of protection is sufficient to ensure that the equipment will not be damaged by water immersion within 30 minutes at a depth of 1 meter.

[0110] In addition, for dynamic seals, for example, a shaft seal can be fitted with a dustproof ring in the part where the rotating shaft 11 mates with the power compartment, which can basically meet the protection level of IP57 or above.

[0111] Regarding the cover, it is adapted to the base housing 1. In addition, in order to protect the electrical and mechanical equipment housed in, for example, the power compartment, the power compartment composed of the cover and the base housing 1 should have relatively good sealing as mentioned above. However, some electrical equipment may have special requirements for sound, light, etc., such as cameras, which need to be directly exposed to the power compartment or require the power compartment to have a transparent part. Considering the overall protection level, for example, the camera is installed in the power compartment, and the cover is adapted to a transparent window in the direction in which the camera captures images or videos.

[0112] Transparent windows can be made of glass or transparent engineering plastics, etc. The appropriate material can be selected according to the aforementioned protection level, which will not be elaborated here.

[0113] Regarding devices such as cameras, which are image and / or video capture devices, the same applies to other types of image and / or video capture devices.

[0114] For cameras, their primary function is license plate recognition. They can also record and save information such as vehicle type, vehicle entry and exit from parking spaces, or vehicle status identification. Only the relevant configurations are illustrated here, without explaining the specific algorithms used for license plate recognition. Similarly, other methods will not be elaborated upon here.

[0115] In addition, for purposes such as distance detection, radar, ultrasonic rangefinders, or laser rangefinders can be configured. Some of these devices can be directly installed on the outer surface of the enclosure without considering protection issues, while others can be installed inside the enclosure, such as laser rangefinders.

[0116] For radar and ultrasonic rangefinders, they need to be exposed from the housing, but they can be mechanically protected by a shield. For example, for an ultrasonic rangefinder, the main body can be located inside the cabin, with the probe exposed. The probe can be mounted on the housing, for example, by a conical cover.

[0117] Furthermore, instruments and meters that can currently be mounted on ground locks can be installed in the embodiments of the present invention, such as speakers, to provide car owners with interactive information carried by sound.

[0118] For example, considering the overall management of the parking lot, wired or wireless communication modules can be installed in, for example, the engine compartment or the auxiliary compartment 14, to integrate the control and management of the parking locks into the parking management system.

[0119] Regarding the power supply for the ground lock's electrical equipment, as mentioned earlier, in a more preferred embodiment, a battery is installed in the power compartment, such as... Figure 4 The battery compartment 26 shown is designed to provide self-sufficient power.

[0120] Regarding the power supply for the electrical equipment used in the ground lock, an external power source can also be configured for it.

[0121] In addition, as mentioned earlier, for example, powertrain 9 uses a DC motor, and the whole system, including for example, cameras, generally uses low-voltage DC power. Therefore, it is more advantageous to use a battery for power supply.

[0122] In addition, for external power supply, it is generally connected to AC power. Currently, AC to DC power modules are very mature, and even power strips are often equipped with DC interfaces, so I will not go into details about them.

[0123] Regarding the position retention of the lock, as mentioned above, the lock is held in place by means of the self-locking of the worm gear mechanism. However, relatively large impacts can easily cause plastic deformation or damage to the worm gear teeth or helical teeth. Therefore, in the reverse direction (reset direction of the flip shaft 11), a rectangular spring 7 is provided to protect both the powertrain 9 and the worm gear mechanism. In the forward direction, a limiting device can be further provided, which, in the presence of the aforementioned rectangular spring 7, employs a relatively rigid limiting method.

[0124] Accordingly, for example, the limit of the flip plate 12 at the flipped end point is the end limit of its unfolding stroke, and it is equipped with a limit device for the lock part at the end point, and the limit device is preferably a rigid limit.

[0125] Regarding the positioning limit device for the unfolded state of the flip plate 12, its location is relatively flexible. It can be set on the flip plate 12, on the flip shaft 11, or directly on the base. Figure 9 On the seat plate 19 shown.

[0126] Furthermore, since, for example, the housing 1 is substantially fixedly connected to the base plate 19, the housing 1 can be understood as a component of the base as a whole.

[0127] Furthermore, for example Figure 10 The slope panel 15 shown in the example can also serve as a limiting device for the flip plate 12 to flip into place.

[0128] exist Figure 6 In the illustrated structure, an eccentric plate 10 is fixedly mounted on the flip shaft 11. Based on the general concept of the eccentric plate 10, as it rotates with the flip shaft 11, the distance between its profile and the seat plate 19 will change. Considering the need to avoid interference within the working stroke of the flip shaft 11, it is clear that the eccentric plate 10 will not have motion interference with the seat plate 19 within the working stroke of the flip shaft 11, or it cannot have relatively violent motion interference. At the end of the working stroke of the flip shaft 11, the eccentric plate 10 and the seat plate 19 make mechanical contact, thereby forming a limiting force sufficient to limit the eccentric plate 10.

[0129] exist Figure 6 In the illustrated structure, the eccentric plate 10 is a rectangular plate with one rounded corner. The arrow in the figure indicates the direction in which the flip plate 12 unfolds, and the opposite direction indicates the direction in which the flip plate 12 retracts (resets). Under these conditions, the part where the rectangular eccentric plate 10 connects to the flip shaft 11 is... Figure 6 The eccentric plate 10 is offset to the left. Simultaneously, the center of the rounded corner of the rectangular eccentric plate 10 lies on the axis of the flipping shaft 11. Under these conditions, even if the eccentric plate 10 comes into contact with the housing 1 during the unfolding of the flipping plate 12, the minimum distance between the eccentric plate 10 and the housing 1 will not change due to the presence of the rounded corner and its concentricity with the flipping shaft 11, until the lower edge of the eccentric plate 10 engages with the housing 1 in the figure. The state of the eccentric plate 10 at this point is the eccentric plate 10' corresponding to the double-dotted line in the figure.

[0130] In addition, the eccentric plate 10 can also be understood as a cam. In other words, the eccentric plate 10 can achieve the expected function by using other cam structures.

[0131] In addition, for example, the flip plate 12, when it is in a vertical state, is roughly the state with the largest blocking range. Under this condition, a stop is provided on the base plate 19 to limit the position of the base plate 19 by providing a baffle or a stop pin.

[0132] As can be seen from the foregoing description, the limiting function is mainly manifested between components that have a dynamic and static relationship. The component used to provide the limiting function can be installed on the dynamic component or the static component to achieve the predetermined limiting function.

[0133] Regarding the location of the limit component, it can be set at any one to three of the three locations: both ends and the middle of the flip shaft 11. For example... Figure 1 In the illustrated structure, an eccentric plate 10 is shown at the left end of the tilting shaft 11, and an eccentric plate 10 can also be set at the auxiliary compartment 14. In addition, an eccentric plate 10 can also be set in the middle of the tilting shaft 11. The positions of the three eccentric plates 10 can be chosen at any one of them, or two or three can be set at the same time. Among them, the method of setting one eccentric plate 10 on each side is preferred.

[0134] In some of the foregoing embodiments, the locking part is selected as a flip plate 12 mounted on the flip shaft 11. Figure 1 and Figure 8 In the illustrated structure, the flip plate 12 is a strip, and the flip shaft 11 is located at the first edge of the flip plate 12 along the strip direction.

[0135] The flip shaft 11 and the flip plate 12 can be fixedly connected by welding.

[0136] To ensure detachability, the flip shaft 11 and the flip plate 12 can be connected by, for example, bolts.

[0137] In addition, Figure 8 In the illustrated structure, the upper surface of the flip plate 12 is a patterned plate, and the lower surface is provided with four reinforcing plates 33. Through holes can be provided on the reinforcing plates 33. The flip shaft 11 passes through the through holes of the reinforcing plates 33 in sequence, and is then fixedly connected by welding or other connection methods.

[0138] Correspondingly, a set screw hole can be made on the through hole, and the assembly between the flip shaft 11 and the flip plate 12 can be achieved by using the set screw locking method, so as to facilitate the replacement of the flip plate 12.

[0139] In addition, Figure 8 The two ends of the illustrative flip plate 12 are provided with a pair of combined plates, including a reinforcing plate 33 and a first end plate, to improve the overall connection strength.

[0140] For the slope panel 15, its reinforcement method can refer to that of the flip panel 12, and in... Figure 10 The reinforcing plate 32 and the end plate 31 are schematically shown in the diagram, and will not be described in detail here.

[0141] In addition, Figure 10 In the illustrated structure, the upper side of the slope panel 15 has an integral flange, which can improve the overall strength.

[0142] Correspondingly, in Figure 10In the illustrated structure, a flange 29 or other reinforcing structure is also provided on the edge of the flip plate 12 where the roller 13 is located to improve the overall strength.

[0143] In addition, a support beam 30 is provided on the back side of the flip plate 12, that is, the plate surface opposite to the patterned surface of the patterned plate, to improve the overall strength.

[0144] Regarding the roller 13, the roller 13 is located at the end of the tilting plate 12, that is, on the side away from the tilting shaft 11. When, for example, the vehicle chassis rubs against the end of the tilting plate 12, the sliding friction is changed to rolling friction, so as to reduce the load on the powertrain and the worm gear mechanism under this condition.

[0145] Given that the tilting plate 12 may be subjected to the pressure of vehicle wheels when it is in the retracted state, it should have good support in this state. Under this condition, the tilting shaft is located on the underside of the tilting plate, providing first-side support; this side is referred to as the side where the first edge of the tilting plate 12 is located. Simultaneously, it must be ensured that when the tilting plate 12 is in the retracted state, the second edge opposite to the first edge is also supported on the base, thereby preventing damage to the powertrain 9 or the worm gear pair due to the second edge being suspended in the air.

[0146] The second plate edge is the plate edge with roller 13.

[0147] For the sloping panel 15, the configuration can be similar to that of the flip panel 12 when it is folded up. Also, if... Figure 7 As shown, the slope panel 15 and the tilting plate 12 are highest above the tilting shaft 11, forming a double-slope structure, which is beneficial for, for example, vehicle passage.

Claims

1. A type of floor lock, characterized in that, include: Matrix; The locking part is rotatably mounted on the base via a horizontal flipping shaft; A worm gear mechanism is mounted on the base, and the worm gear is connected to the tilting shaft; A power unit having an output shaft, wherein the worm of the worm gear mechanism is circumferentially connected to the output shaft, and the worm has an axial degree of freedom relative to the output shaft and is axially confined within a predetermined floating range; as well as An elastic component provides an axial force acting on the worm gear in a direction away from the output shaft, so as to bias the worm gear in a direction away from the output shaft within the floating range.

2. The ground lock according to claim 1, characterized in that, The output shaft and the worm gear are connected by a profiled surface, spline, sliding key, or flat key.

3. The ground lock according to claim 1, characterized in that, The elastic component is a spring, which is fitted onto a corresponding worm or a given sleeve. One end of the spring slides or rolls with the worm teeth, while the other end is supported or rested on a given statically determinate component or structure.

4. The ground lock according to claim 1 or 3, characterized in that, The worm gear mechanism is configured inside a transmission box; The elastic component is located inside the transmission box.

5. The ground lock according to claim 1, characterized in that, The worm gear shaft and the rotating shaft are connected or fixed together by a coupling.

6. The ground lock according to claim 5, characterized in that, The coupling is a flexible coupling.

7. The ground lock according to claim 1, characterized in that, The flipping shaft and / or the locking part are equipped with a reset device.

8. The ground lock according to claim 1, characterized in that, Both ends of the flipping shaft are mounted on the base via predetermined bearing seats; Each end of the rotating shaft is equipped with a compartment, one of which is the power compartment with the power unit, and the other is the auxiliary compartment.

9. The ground lock according to claim 8, characterized in that, The engine compartment must have a sealing rating of at least IP57.

10. The ground lock according to claim 8, characterized in that, It is equipped with at least an image and / or video capture device for license plate recognition; The image and / or video acquisition device is located in the power compartment or auxiliary compartment; Accordingly, the power compartment or auxiliary compartment equipped with the image and / or video acquisition device has a viewing window.

11. The ground lock according to claim 8, characterized in that, The power compartment is equipped with a battery and / or has an external power source to power the electrical equipment of the ground lock.

12. The ground lock according to claim 1, characterized in that, It is equipped with a limit device for limiting the locking part to its stop point.

13. The ground lock according to claim 12, characterized in that, The limiting device is a rigid limiting part or a limiting part with a flexible body that is fitted onto the flip shaft, locking part or base.

14. The ground lock according to claim 13, characterized in that, When the rigid limiting part is installed on the flip shaft, it is installed at 1 to 3 of the three positions at both ends and the middle of the flip shaft.

15. The ground lock according to claim 14, characterized in that, The rigid limiting part is an eccentric plate installed on the flipping shaft. During the flipping stroke of the lock part, the eccentric plate disengages from the predetermined fixing part and engages with the fixing part when in the limiting position.

16. The ground lock according to claim 1, characterized in that, The locking part is a flip plate installed on the flip shaft. The flip plate is a strip plate, and the flip shaft is located at the first edge of the flip plate along the strip direction.

17. The ground lock according to claim 16, characterized in that, When the flip plate is in the storage state, the flip shaft is located on the lower side of the flip plate, and the second edge of the flip plate, which is opposite to the first edge of the plate, is supported on the base.

18. The ground lock according to claim 17, characterized in that, The second plate edge is provided with a roller.

19. The ground lock according to any one of claims 16 to 19, characterized in that, A sloping panel is provided on the second side of the flipping shaft; Accordingly, when the flip plate is in the stored state, a double-slope structure with the flip plate and the slope plate forming a ridge above the flip axis is formed.

20. A management system, characterized in that, Used for managing parking spaces via the ground lock as described in any one of claims 1 to 19.

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