Equipment locking devices and mobile charging equipment

Abstract

This invention discloses a device locking mechanism and a mobile charging device. The device locking mechanism includes a device body, a roller assembly, a pull rod, and a locking mechanism. The roller assembly is rotatably connected to the device body, and the pull rod is slidably connected to the device body. The pull rod can move to a locked position or an unlocked position, and the pull rod is linked with the locking mechanism. When the pull rod is in the locked position, it locks the roller assembly at an angle through the locking mechanism. When the pull rod is in the unlocked position, it releases the angle locking of the roller assembly by the locking mechanism. The mobile charging device includes the device locking mechanism; the device body is a charging pile device with a built-in power distribution mechanism and a power storage mechanism; the device body is equipped with a charging head, a charging cable, and a cable reel box. This invention can balance the convenience of transportation between different locations and the stability and reliability when fixed in place.

Description

TECHNICAL FIELD

[0001] The present application relates to a charging device, in particular to a device locking device and a mobile charging device. BACKGROUND

[0002] Under the background of rapid development of new energy vehicles, the construction and optimization of charging infrastructure has become one of the key factors to promote the healthy development of new energy vehicle industry. Traditional charging devices are mostly fixed charging piles, which are installed in specific places such as residential areas, commercial areas or public parking lots, which limits their use range. For users who need to charge in different places, there is a certain inconvenience. In addition, traditional charging devices also have many defects in charging line management, cleaning and maintenance, mobility and stability, such as charging line winding, dust accumulation, which affects the charging efficiency and safety. SUMMARY

[0003] Therefore, the purpose of the present application is to provide a device locking device and a mobile charging device, which can balance the convenience of transfer between different places and the stability and reliability of fixed placement.

[0004] The device locking device in the present application comprises a device main body, a roller assembly, a pull rod and a locking mechanism, the roller assembly is rotationally connected with the device main body, the pull rod is slidingly connected with the device main body, the pull rod can move to a locking position or an unlocking position, and the pull rod is linked with the locking mechanism; when the pull rod is located at the locking position, the pull rod locks the roller assembly by the locking mechanism; when the pull rod is located at the unlocking position, the pull rod releases the locking of the roller assembly by the locking mechanism.

[0005] Further, the locking mechanism comprises a compression spring and a locking pressure rod arranged between the pull rod and the roller assembly; when the pull rod is retracted into the device main body, the pull rod moves to the locking position, and the end of the locking pressure rod away from the pull rod abuts against the roller assembly to realize the locking of the roller assembly; when the pull rod is at least partially extended from the device main body, the pull rod moves to the unlocking position, and the locking pressure rod is separated from the roller assembly to release the locking of the roller assembly.

[0006] Further, the side of the pull rod facing the roller assembly is provided with a guide constraint cavity, the compression spring is arranged in the guide constraint cavity, and the locking pressure rod is slidingly matched with the guide constraint cavity.

[0007] Further, the device main body is provided with a stroke limiting slot, and the locking pressure rod is provided with a stroke limiting slider slidingly matched with the stroke limiting slot.

[0008] Furthermore, it also includes an unlocking and locking mechanism. The main body of the device is provided with a pull rod storage slot and an unlocking and locking slide groove. The unlocking and locking mechanism includes an unlocking and locking button and an unlocking and locking spring. The unlocking and locking button slides in conjunction with the unlocking and locking slide groove. The unlocking and locking button is provided with a locking head. The two ends of the unlocking and locking spring are respectively connected to the main body of the device and the locking head. The pull rod is provided with a locking slot. When the pull rod is located in the pull rod storage slot, the locking head engages with the locking slot, which locks the pull rod in the locked position. By pressing the unlocking and locking button, the locking head can be separated from the locking slot to release the lock on the pull rod.

[0009] Furthermore, the roller assembly includes a connecting shaft and two roller bodies respectively disposed at the left and right ends of the connecting shaft. The connecting shaft is rotatably connected to the bottom of the device body. Both roller bodies rotate coaxially with the connecting shaft and both roller bodies protrude downward from the device body. The bottom of the device body is provided with a downwardly protruding support foot, which is located on the front side of the device body. The pull rod and the roller assembly are both located on the rear side of the device body.

[0010] A mobile charging device according to the present invention includes a device locking device; the main body of the device is a charging pile device with a built-in power distribution mechanism and a power storage mechanism; the main body of the device is provided with a charging head, a charging cable and a cable take-up box, the first end of the charging cable is connected to the power distribution mechanism, the second end of the charging cable is connected to the charging head, the charging cable is wound in the cable take-up box, and a cleaning wheel for cleaning the charging cable is provided at the outlet of the cable take-up box.

[0011] Furthermore, the main body of the device is provided with a connecting rotating hole corresponding to the position inside the take-up box, and two annular electrode plates of different diameters are provided in the connecting rotating hole; the take-up box is provided with a limiting rotating head, a take-up rod and a take-up baffle connected in sequence, the limiting rotating head is rotatably engaged with the connecting rotating hole, and the charging cable is wound on the take-up rod; the limiting rotating head is provided with two electrode sleeves, and each of the two electrode sleeves is provided with an electrode head, and the two electrode heads are respectively connected to the two annular electrode plates, and the rotation center axis of the limiting rotating head coincides with the center of the two annular electrode plates; the end of the electrode head away from the electrode plate is connected to the charging cable through a connecting spring.

[0012] Furthermore, the edge of the take-up baffle is provided with a helical tooth groove, the outlet of the take-up box is provided with a wire guide tube, and the main body of the equipment is provided with a wire collar; one end of the sweeping wheel is rotatably connected to the wire collar, and the other end of the sweeping wheel is rotatably connected to the wire guide tube through a connecting tube. The end of the connecting tube away from the sweeping rotation is provided with a helical gear part, which meshes with the helical tooth groove. The rotation of the take-up baffle can drive the sweeping wheel to rotate.

[0013] Furthermore, the cleaning wheel is provided with multiple cleaning bristle sections at intervals inside, and a through groove structure is provided on the cleaning wheel between two adjacent cleaning bristle sections; the winding baffle is rotatably connected to the take-up box, the winding baffle is provided with a winding handle, and the winding handle is provided with a handle sleeve.

[0014] The beneficial effects of this invention are:

[0015] (1) The present invention, through the cooperation of roller assembly, pull rod and locking mechanism, enables the main body of the equipment to take into account both the ease of transportation between different locations and the stability and reliability when fixed.

[0016] (2) The compression spring of the present invention has a buffering function, reducing the contact impact between the components. Furthermore, after the pull rod moves to the locked position, the compression spring is in a contracted state. The elastic force of the compression spring and the pressure of the pull rod act on the locking rod. The end of the locking rod conformally and tightly fits the outer wall of the connecting shaft, ensuring that the locking rod firmly abuts against the connecting shaft of the roller assembly. Friction prevents the connecting shaft of the roller assembly from rotating relative to the locking rod. In addition, when the unlocking and locking mechanism contacts the locking of the pull rod, the compression spring can also eject the pull rod, making it easy for the user to pull out the pull rod.

[0017] (3) The mobile charging device of the present invention makes the charging location no longer limited to a specific location, which can improve the convenience and flexibility of car charging. The mobile charging device can also serve as a backup charging power source for long-distance driving. The cleaning wheel can ensure the cleanliness of the charging cable, the cable take-up box can prevent the charging cable from getting tangled, and the device locking device can ensure that the main body of the device is both easy to move and stable and reliable when fixed. Therefore, it overcomes the shortcomings of traditional charging devices in terms of charging cable management, cleaning and maintenance, mobility and stability.

[0018] (4) The mobile charging device of the present invention can ensure that the power connection stability of the mobile charging device is always connected to the annular electrode plate and the power distribution mechanism during the rotation of the electrode head by setting the annular electrode plate.

[0019] (5) The cleaning wheel of the mobile charging device of the present invention can rotate and clean the outer wall of the charging cable during the process of pulling out and winding the charging cable. The dust and debris swept off can be discharged through the through groove structure of the cleaning wheel, thereby ensuring the cleanliness of the outer wall of the charging cable. This can prevent dust and debris from corroding the outer wall of the charging cable and prevent dust and debris from entering the inside of the cable take-up box. Maintaining the cleanliness of the charging cable can reduce the failure rate of the charging cable caused by external pollution and extend the service life of the charging cable. Attached Figure Description

[0020] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention (some components are hidden and cut out);

[0023] Figure 3 for Figure 2 A magnified view of part A;

[0024] Figure 4 This is a schematic diagram of the structure of the pull rod, locking mechanism and roller assembly of the present invention.

[0025] Figure 5 for Figure 4 A magnified view of part B;

[0026] Figure 6 for Figure 4 A magnified view of a portion at point C;

[0027] Figure 7 for Figure 2 A magnified view of a portion at point D;

[0028] Figure 8 This is one of the structural schematic diagrams showing the cooperation of the limiting rotor, winding rod, winding baffle and cleaning wheel of the present invention;

[0029] Figure 9 for Figure 8 A magnified view of a portion at point E;

[0030] Figure 10 for Figure 8 A magnified view of a portion at point F;

[0031] Figure 11 This is the second schematic diagram of the structure of the limiting rotor, winding rod, winding baffle and cleaning wheel of the present invention.

[0032] The attached diagram is labeled as follows: 1. Main body of the equipment; 2. Support leg; 3. Roller body; 4. Take-up box; 5. Pull rod; 6. Charging cable; 7. Charging head; 8. Cleaning wheel; 9. Connecting rotating hole; 10. Annular electrode plate; 11. Limiting rotating head; 12. Take-up rod; 13. Take-up baffle; 14. Take-up handle; 15. Handle sleeve; 16. Electrode sleeve; 17. Electrode spring; 18. Electrode head; 19. Cable conduit; 20. 21. Connecting tube; 22. Helical gear; 23. Cleaning brush bristles; 24. Wire loop; 25. Helical tooth groove; 26. Pull rod storage groove; 27. Unlocking and locking slide groove; 28. Telescopic slide groove; 29. ​​Locking and unlocking button; 30. Locking clip; 31. Unlocking and locking spring; 32. Locking slot; 33. Travel limit slot; 34. Locking pressure rod; 35. Compression spring; 36. Travel limit slider; 37. Connecting shaft. Detailed Implementation

[0033] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0034] like Figures 1-6 As shown, a device locking device in this embodiment includes a device body 1, a roller assembly, a pull rod 5, and a locking mechanism. The roller assembly is rotatably connected to the device body 1, and the pull rod 5 is slidably connected to the device body 1. The pull rod 5 can move to a locked position or an unlocked position, and the pull rod 5 is linked with the locking mechanism. When the pull rod 5 is in the locked position, the pull rod 5 locks the roller assembly at an angle through the locking mechanism. When the pull rod 5 is in the unlocked position, the pull rod 5 causes the locking mechanism to release the angle locking of the roller assembly.

[0035] Preferably, the pull rod 5 is slidably mounted on the device body 1. When the pull rod 5 slides downwards, it retracts into the device body 1 for easy storage. In this retracted position, the pull rod 5 is locked, engaging a locking mechanism to angularly lock the roller assembly, preventing rotation and ensuring the device body 1 can be stably placed on the ground or elsewhere. For example, if the device body 1 is a charging station, it can be stably placed on the ground during charging, preventing movement from affecting the charging process. When the pull rod 5 slides upwards, it extends at least partially out of the device body 1, serving as a grip for the user. In this unlocked position, the roller body can rotate freely, allowing the user to pull the device body 1. In summary, the device locking device allows the device body 1 to balance ease of transport between different locations with stable and reliable placement.

[0036] In this embodiment, the locking mechanism includes a compression spring 35 and a locking lever 34 disposed between the pull rod 5 and the roller assembly. When the pull rod 5 retracts into the device body 1, the pull rod 5 moves to the locking position, and the end of the locking lever 34 away from the pull rod 5 abuts against the roller assembly to achieve angular positioning and locking of the roller assembly. When the pull rod 5 extends at least partially out of the device body 1, the pull rod 5 moves to the unlocking position, and the locking lever 34 separates from the roller assembly to release the angular positioning and locking of the roller assembly.

[0037] The compression spring 35 provides a buffering function, reducing contact impact between components. When the lever 5 moves to the locked position, the compression spring 35 is in a contracted state. The elastic force of the compression spring 35 and the pressure of the lever 5 act on the locking rod 34. The end of the locking rod 34 is arc-shaped, allowing it to conform closely to the outer wall of the connecting shaft 37, ensuring that the locking rod 34 firmly abuts against the connecting shaft 37 of the roller assembly. Friction prevents the connecting shaft 37 of the roller assembly from rotating relative to the locking rod 34. Furthermore, when the unlocking and locking mechanism engages the locking mechanism on the lever 5, the compression spring 35 can also eject the lever 5, making it easy for the user to pull it out.

[0038] In this embodiment, a guide constraint cavity is provided on the side of the pull rod 5 facing the roller assembly, the compression spring 35 is disposed in the guide constraint cavity, and the locking pressure rod 34 slides in cooperation with the guide constraint cavity.

[0039] The guide constraint cavity is used to ensure that the movement direction of the locking rod 34 is in the vertical direction, preventing the locking rod 34 from deviating. Preferably, the top of the locking rod 34 may also be provided with a limiting boss to prevent it from dislodging from the guide constraint cavity.

[0040] In this embodiment, the main body 1 of the device is provided with a travel limit groove 33, and the locking rod 34 is provided with a travel limit slider 36 that slides in cooperation with the travel limit groove 33.

[0041] The length of the travel limit groove 33 is along the vertical direction, which is used to limit the displacement of the travel limit slider 36 in the vertical direction, thereby limiting the vertical displacement of the locking pressure rod 34, and further limiting the vertical displacement of the pull rod 5. At the same time, when the user holds the pull rod 5 and pulls the main body 1, the pulling force is transmitted to the main body 1 through the pull rod 5, the limit boss, the locking pressure rod 34, the travel limit slider 36 and the travel limit groove 33, so that the user can pull the main body 1 to move as a whole through the pull rod 5.

[0042] In this embodiment, an unlocking and locking mechanism is also included. The main body 1 of the device is provided with a pull rod storage groove 25 and an unlocking and locking slide groove 26. The unlocking and locking mechanism includes an unlocking and locking button 29 and an unlocking and locking spring 31. The unlocking and locking button 29 is slidably engaged with the unlocking and locking slide groove 26. The unlocking and locking button 29 is provided with a locking head 30. The two ends of the unlocking and locking spring 31 are respectively connected to the main body 1 of the device and the locking head 30. The pull rod 5 is provided with a locking groove 32. When the pull rod 5 is located in the pull rod storage groove 25, the locking head 30 is engaged in the locking groove 32, which can lock the pull rod 5 in the locked position. By pressing the unlocking and locking button 29, the locking head 30 can be separated from the locking groove 32 to release the lock on the pull rod 5.

[0043] The unlocking and locking slide 26 is connected to the telescopic slide 27 and the locking head slide 28. The locking head 30 slides in the locking head slide 28, and the unlocking and locking button 29 slides in the unlocking and locking slide 26. The telescopic slide 27 is located on the side of the unlocking and locking slide 26 facing the unlocking and locking spring 31, and is used to make way to prevent the unlocking and locking button 29 from interfering.

[0044] The pull rod storage slot 25 has an internal unlocking slide groove that extends forward through the upper side of the front end of the mobile charging pile. The rear end of the unlocking slide groove is connected to a telescopic slide groove 27, which extends through the upper side of the rear inner wall of the pull rod storage slot 25. The upper front end of the telescopic slide groove 27 is connected to a locking groove 32, which extends through the upper side of the rear inner wall of the pull rod storage slot 25 and is located above the unlocking slide groove.

[0045] By locking the lever 5 in the locked position through the unlocking and locking mechanism, the position of the lever 5 can be fixed, ensuring that pressure can be continuously applied to the compression spring 35 and the locking lever 34, thereby ensuring the stability and reliability of the equipment body 1 when placed on the ground or in other locations. To unlock, simply press the unlocking and locking button 29, causing it to move towards the equipment body 1 and disengage the locking head 30 from the locking slot 32. The compression spring 35 extends, and its elasticity allows the lever 5 to pop out, making it easy for the user to pull out the lever 5.

[0046] In this embodiment, the pull rod 5 is inverted "U" shape. The pull rod 5 includes a crossbeam and two longitudinal beams. The upper ends of the two longitudinal beams are respectively connected to the left and right ends of the crossbeam. The lower ends of the two longitudinal beams are respectively provided with a guide constraint cavity. Two of each of the compression spring 35, the locking pressure rod 34, the travel limit groove 33, and the travel limit slider 36 are provided. Among them, the locking groove 32 is located in the middle of the crossbeam.

[0047] In this embodiment, the roller assembly includes a connecting shaft 37 and two roller bodies 3 respectively disposed at the left and right ends of the connecting shaft 37. The connecting shaft 37 is rotatably connected to the bottom of the device body 1. Both roller bodies 3 rotate coaxially with the connecting shaft 37. Both roller bodies 3 protrude downward from the device body 1. The bottom of the device body 1 is provided with a downwardly protruding support foot 2. The support foot 2 is located on the front side of the device body 1. The pull rod 5 and the roller assembly are both located on the rear side of the device body 1.

[0048] When the main body 1 is placed on the ground or elsewhere, the non-rotating rollers 3 and the support feet 2 provide support. When it is necessary to move the main body 1, press the unlock / lock button 29 to move it towards the main body 1 and cause the locking head 30 to disengage from the locking slot 32. The compression spring 35 extends, and the elastic force of the compression spring 35 can push the pull rod 5 out. At this time, the locking mechanism no longer prevents the connecting shaft 37 and the rollers 3 from rotating. The user pulls out the pull rod 5 and tilts the main body 1. The support feet 2 leave the ground, while the two rollers 3 contact the ground. The user can then easily pull the main body 1 to move.

[0049] like Figures 1-11 As shown, a mobile charging device in this embodiment includes a device locking device; the main body 1 is a charging pile device with a built-in power distribution mechanism and a power storage mechanism; the main body 1 is provided with a charging head 7, a charging cable 6 and a cable take-up box 4, the first end of the charging cable 6 is connected to the power distribution mechanism, the tail end of the charging cable 6 is connected to the charging head 7, the charging cable 6 is wound in the cable take-up box 4, and a cleaning wheel 8 for cleaning the charging cable 6 is provided at the outlet of the cable take-up box 4.

[0050] The power distribution mechanism can also be equipped with components such as a control panel and a charging interface. The power distribution mechanism, the energy storage mechanism, the control panel and the charging interface are all existing technologies and are not improvements of this application. Their principles will not be described in detail here.

[0051] To facilitate the placement of the charging head 7, a connector for installing the charging head 7 can be provided on the main body 1 of the device.

[0052] In use, the lever 5 slides upwards, extending at least partially beyond the device body 1 to serve as a grip for the user. At this point, lever 5 is in the unlocked position, allowing the roller assembly to rotate freely, facilitating the user's movement of the device body 1 towards the car's charging port. Then, sliding lever 5 downwards retracts the device body 1. Once retracted, lever 5 is in the locked position, engaging a locking mechanism to angle-lock the roller assembly, preventing rotation and ensuring the device body 1 can be stably placed on the ground or elsewhere, guaranteeing stability during charging and preventing movement. Finally, the user removes the charging head 7 from the connector and pulls it to extend the charging cable 6 from the cable reel 4, connecting the charging head 7 to the car's charging port for charging. This eliminates location restrictions, improving the convenience and flexibility of car charging. The mobile charging device can also serve as a backup power source for long-distance driving. The cleaning wheel 8 ensures the cleanliness of the charging cable 6, the cable reel 4 prevents the charging cable 6 from becoming tangled, and the device locking device ensures that the main body 1 can be both easy to move and stable and reliable when fixed in place. Therefore, this embodiment can overcome the shortcomings of traditional charging devices in terms of charging cable 6 management, cleaning and maintenance, mobility, and stability.

[0053] In this embodiment, the main body 1 of the device is provided with a connecting rotating hole 9 corresponding to the position inside the take-up box 4. Two annular electrode plates 10 with different diameters are provided inside the connecting rotating hole 9. The take-up box 4 is provided with a limiting rotating head 11, a take-up rod 12 and a take-up baffle 13 connected in sequence. The limiting rotating head 11 is rotatably engaged with the connecting rotating hole 9, and the charging cable 6 is wound on the take-up rod 12. The limiting rotating head 11 is provided with two electrode sleeves 16. Each of the two electrode sleeves 16 is provided with an electrode head 18. The two electrode heads 18 are respectively connected to the two annular electrode plates 10. The rotation center axis of the limiting rotating head 11 coincides with the center of the two annular electrode plates 10. The end of the electrode head 18 away from the electrode plates is connected to the charging cable 6 through a connecting spring 17.

[0054] The annular electrode plate 10 is connected to the power distribution mechanism. By rotating the limiting rotor 11, the winding rod 12, and the winding baffle 13, the charging cable 6 can be stored on the winding rod 12. When the charging cable 6 is pulled out, the limiting rotor 11, the winding rod 12, and the winding baffle 13 can rotate accordingly. During the winding and pulling out of the charging cable 6, both the limiting rotor 11 and the electrode head 18 rotate. By setting the annular electrode plate 10, the electrode head 18 is always connected to the annular electrode plate 10 and the power distribution mechanism during rotation, ensuring the stability of the power connection of the mobile charging device.

[0055] In this embodiment, the edge of the take-up baffle 13 is provided with a helical tooth groove 24, the outlet of the take-up box 4 is provided with a wire threading tube 19, and the main body 1 of the equipment is provided with a wire collar 23; one end of the cleaning wheel 8 is rotatably connected to the wire collar 23, and the other end of the cleaning wheel 8 is rotatably connected to the wire threading tube 19 through a connecting rotating tube 20. The end of the connecting rotating tube 20 away from the cleaning rotation is provided with a helical gear 21, which meshes with the helical tooth groove 24. The rotation of the take-up baffle 13 can drive the cleaning wheel 8 to rotate.

[0056] In this embodiment, the cleaning wheel 8 is provided with a plurality of cleaning bristles 22 at intervals inside, and a through groove structure is provided on the cleaning wheel 8 between two adjacent cleaning bristles 22; the winding baffle 13 is rotatably connected to the winding box 4, the winding baffle 13 is provided with a winding handle 14, and the winding handle 14 is provided with a handle sleeve 15.

[0057] During the extraction and winding of the charging cable 6, the winding baffle 13 also rotates. At this time, the winding baffle 13 can drive the helical gear 21 to rotate through the meshing between the helical tooth groove 24 and the helical gear 21. The helical gear 21 drives the cleaning wheel 8 to rotate between the cable tube 19 and the wire collar 23 through the connecting tube 20. Since the charging cable 6 passes through the connecting tube 20 and the wire collar 23 inside the cleaning wheel 8, the multiple cleaning bristles 22 inside the cleaning wheel 8 can rotate and clean the outer wall of the charging cable 6 during the extraction and winding of the charging cable 6. The dust and debris swept off can be discharged through the through groove structure of the cleaning wheel 8, thereby ensuring the cleanliness of the outer wall of the charging cable 6. This not only prevents dust and debris from corroding the outer wall of the charging cable 6, but also prevents dust and debris from entering the inside of the cable take-up box 4. Maintaining the cleanliness of the charging cable 6 can reduce the failure rate of the charging cable 6 caused by external pollution and extend the service life of the charging cable 6.

[0058] The winding handle 14 and the handle sleeve 15 make it easy for the user to rotate the winding baffle 13 to wind up the charging cable 6.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A device lockout apparatus, characterized by: The device body (1), a roller assembly, a pull rod (5), a locking mechanism and an unlocking and locking mechanism are included, the roller assembly is rotationally connected with the device body (1), the pull rod (5) is slidingly connected with the device body (1), the pull rod (5) can move to a locking position or an unlocking position, and the pull rod (5) is linked with the locking mechanism; when the pull rod (5) is located at the locking position, the pull rod (5) locks the roller assembly by the locking mechanism; when the pull rod (5) is located at the unlocking position, the pull rod (5) releases the locking mechanism from locking the roller assembly. The device body (1) is provided with a pull rod storage groove (25) and an unlocking and locking sliding groove (26), the unlocking and locking mechanism includes an unlocking and locking button (29) and an unlocking and locking spring (31), the unlocking and locking button (29) is slidingly matched with the unlocking and locking sliding groove (26), the unlocking and locking button (29) is provided with a locking clamping head (30), and the two ends of the unlocking and locking spring (31) are connected with the device body (1) and the locking clamping head (30) respectively; the pull rod (5) is provided with a locking clamping groove (32); when the pull rod (5) is located in the pull rod storage groove (25), the locking clamping head (30) is clamped into the locking clamping groove (32), so that the pull rod (5) can be locked at the locking position; the locking clamping head (30) can be separated from the locking clamping groove (32) by pressing the unlocking and locking button (29), so as to release the locking of the pull rod (5).

2. The apparatus locking device according to claim 1, characterized in that: The locking mechanism includes a compression spring (35) and a locking pressing rod (34) arranged between the pull rod (5) and the roller assembly; when the pull rod (5) is retracted into the device body (1), the pull rod (5) moves to the locking position, one end of the locking pressing rod (34) away from the pull rod (5) abuts against the roller assembly, so as to lock the roller assembly; when the pull rod (5) is at least partially extended from the device body (1), the pull rod (5) moves to the unlocking position, and the locking pressing rod (34) is separated from the roller assembly, so as to release the locking of the roller assembly.

3. The apparatus locking device of claim 2, wherein: One side of the pull rod (5) facing the roller assembly is provided with a guide constraint cavity, the compression spring (35) is arranged in the guide constraint cavity, and the locking pressing rod (34) is slidingly matched with the guide constraint cavity.

4. The apparatus locking device according to claim 3, characterized in that: The device body (1) is provided with a stroke limiting clamping groove (33), and the locking pressing rod (34) is provided with a stroke limiting sliding block (36) slidingly matched with the stroke limiting clamping groove (33).

5. The apparatus locking device of claim 1, wherein: The roller assembly comprises a connecting shaft (37) and two roller bodies (3) respectively arranged at the left and right ends of the connecting shaft (37), the connecting shaft (37) is rotationally connected with the bottom of the device body (1), the two roller bodies (3) are coaxially rotatable with the connecting shaft (37), the two roller bodies (3) are protruded downward from the device body (1), the bottom of the device body (1) is provided with a support leg (2) protruded downward, the support leg (2) is located at the front side of the device body (1), and the pull rod (5) and the roller assembly are located at the rear side of the device body (1).

6. A mobile charging device, characterized by: The device locking device comprises the device body (1), the device body (1) is a charging pile device with a power distribution mechanism and a power storage mechanism, the device body (1) is provided with a charging head (7), a charging wire (6) and a take-up box (4), the charging wire (6) is connected with the power distribution mechanism at the first end, the charging wire (6) is connected with the charging head (7) at the second end, the charging wire (6) is wound in the take-up box (4), and the take-up box (4) is provided with a cleaning rotating wheel (8) for cleaning the charging wire (6) at the outlet.

7. The mobile charging apparatus of claim 6, wherein: The device body (1) is provided with a connecting rotating hole (9) corresponding to the position in the take-up box (4), the connecting rotating hole (9) is provided with two annular power contact electrode pieces (10) with different diameters, the take-up box (4) is provided with a limiting rotating head (11), a winding rod (12) and a winding disc (13) connected in sequence, the limiting rotating head (11) is rotationally matched with the connecting rotating hole (9), and the charging wire (6) is wound on the winding rod (12); the limiting rotating head (11) is provided with two power contact electrode sleeves (16), the two power contact electrode sleeves (16) are respectively provided with power contact electrode heads (18), the two power contact electrode heads (18) are respectively connected with the two annular power contact electrode pieces (10), and the rotating center axis of the limiting rotating head (11) coincides with the centers of the two annular power contact electrode pieces (10); one end of the power contact electrode head (18) away from the power contact electrode piece is connected with the charging wire (6) through a power spring (17).

8. The mobile charging apparatus of claim 7, wherein: The edge of the winding disc (13) is provided with a bevel gear slot (24), the outlet of the take-up box (4) is provided with a threading pipe (19), and the device body (1) is provided with a wire sleeve ring (23); one end of the cleaning rotating wheel (8) is rotationally connected with the wire sleeve ring (23), the other end of the cleaning rotating wheel (8) is rotationally connected with the threading pipe (19) through a connecting rotating pipe (20), one end of the connecting rotating pipe (20) away from the cleaning rotating wheel is provided with a bevel gear (21) part, the bevel gear (21) part is engaged with the bevel gear slot (24), and the cleaning rotating wheel (8) can be driven to rotate through the rotation of the winding disc (13).

9. The mobile charging apparatus of claim 7, wherein: The inside interval of the cleaning rotating wheel (8) is provided with a plurality of cleaning bristles (22) parts, and the adjacent two cleaning bristles (22) parts have a through slot for deslagging; the winding baffle disc (13) is rotationally connected with the take-up box (4), and the winding baffle disc (13) is provided with a winding handle (14), and the winding handle (14) is provided with a handle rotating sleeve (15).

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