Electric driving device and basketball stand

Abstract

The utility model belongs to the technical field of driving devices, and relates to an electric driving device and a basketball stand. The electric driving device is connected with a lifting pipe on a basketball stand and comprises an electric appliance box, an inner cavity of the electric appliance box comprises a driving cavity, a motor cavity and a control cavity which are isolated from one another, the driving cavity and the motor cavity are arranged side by side, and the control cavity is located on the outer side of the driving cavity and the motor cavity; the motor is mounted in the motor cavity, and an output shaft of the motor extends into the driving cavity and is connected with a transmission part on the lifting pipe extending into the driving cavity through a coupler; the controller, the switching power supply and the switch are all installed in the control cavity, the switching power supply is connected with an external power supply through a power line, the controller and the motor are both electrically connected with the switching power supply, and the switch is connected with the motor and the controller to control the motor to rotate forwards or backwards so as to drive the lifting pipe to ascend or descend through the transmission part. The electric drive device is simple in structure and convenient to operate, the height of the backboard can be easily adjusted, and the defect that the height of the backboard is manually adjusted in the prior art is overcome.

Description

Technical Field

[0001] This utility model belongs to the field of drive device technology, specifically relating to an electric drive device and a basketball hoop. Background Technology

[0002] Basketball is a popular sport enjoyed by people of all ages. A basketball hoop is an essential piece of equipment on a basketball court. A basketball hoop typically includes a support post on the ground, a backboard attached to one side of the post, a basket on the backboard, and a net. To better meet the needs of people of different heights, the backboard height can be adjusted.

[0003] Currently, many basketball hoops with adjustable backboard height, such as the one disclosed in patent CN112569553A, generally adjust the backboard height by manually turning a crank to drive the lifting tube to move up and down. However, manual operation is time-consuming and labor-intensive, and the drive-related structure is relatively complex. In addition, the crank takes up a lot of space and poses a safety hazard. Utility Model Content

[0004] In view of the shortcomings of the related technologies, the present invention provides an electric drive device and a basketball hoop to solve at least one of the technical problems mentioned in the background art.

[0005] This utility model provides an electric drive device, which is connected to the lifting tube on a basketball hoop and is used to provide driving force for the lifting and lowering movement of the lifting tube; the electric drive device includes:

[0006] An electrical box is a sealed shell; the internal cavity of the electrical box includes a drive cavity, a motor cavity and a control cavity that are isolated from each other. The drive cavity and the motor cavity are arranged side by side, and the control cavity is located outside the drive cavity and the motor cavity.

[0007] The motor is installed inside the motor cavity, and the output shaft of the motor extends into the drive cavity; one end of the lifting tube is provided with a transmission component, which passes through the electrical box to extend into the drive cavity, and is connected to the output shaft of the motor via a coupling;

[0008] The controller, switching power supply, and switch are all installed inside the control cavity, with the operating surface of the switch exposed on the outer surface of the electrical box. The switching power supply is connected to an external AC power source via a power cord, the controller is electrically connected to the switching power supply via a power module, and the motor is connected to the switching power supply. The switch is connected to the motor and the controller to control the motor to rotate forward or backward, which in turn drives the lifting tube to move up and down via a transmission component.

[0009] In some embodiments, the motor is a stepper motor, with its V+, PUL+, and DIR+ ports connected to the power module, and its PUL- port connected to the controller's PUL- port. The switch is a self-resetting normally open 6-pin rocker switch, with its first pin connected to the motor's DIR- port, its second pin connected to both the controller's start terminal and the motor's V- port, its third, fourth, and fifth pins grounded, and its sixth pin left floating. When the switch is pressed, the first pin connects to either the third or sixth pin, and the second pin connects to either the fourth or fifth pin, causing the motor to rotate forward or in reverse. When the switch is released, the first pin disconnects from either the third or sixth pin, and the second pin disconnects from either the fourth or fifth pin, causing the motor to stop.

[0010] This utility model also provides a basketball hoop, comprising:

[0011] The column is vertically fixed to the ground;

[0012] The backboard is movably connected to the front of the upright via an upper and lower support arm. The upper support arm, backboard, lower support arm and upright are hinged to form a four-bar linkage.

[0013] An electric lifting device is located at the rear of the column and includes a transmission device and the aforementioned electric drive device. The transmission device includes a transmission component, a lifting tube, and a fixed tube located below the lifting tube and coaxially arranged with it. The upper end of the lifting tube is hinged to the end of the lower support arm extending out of the rear of the column, and the lower end is inserted into the fixed tube. The lower part of the fixed tube is hinged to the column, and the electrical box is sealed and connected to the lower end of the fixed tube. The transmission component includes a lead screw and a nut. The lead screw passes through the fixed tube, and the lower end of the lead screw extends into the drive cavity to connect with the motor output shaft. The nut is installed in the inner wall of the lower end of the lifting tube and is screwed to the lead screw. When the motor starts, the lead screw rotates with the motor output shaft, driving the nut and the lifting tube to move relative to the fixed tube, thereby driving the lower support arm and the upper support arm to rotate to realize the lifting of the backboard.

[0014] In some embodiments, the transmission device further includes an outer sleeve and a compression spring; the outer sleeve is fitted over the outside of the fixed tube and the rising tube, the lower end of the outer sleeve is connected to the side wall of the fixed tube, and an upper retaining ring is installed on the inner wall of the upper end of the outer sleeve; a lower retaining ring is installed on the outer wall of the rising tube below the upper retaining ring, and the compression spring is fitted over the rising tube and sandwiched between the upper and lower retaining rings.

[0015] In some embodiments, the transmission device further includes a protective cylinder covering the outside of the lifting pipe, with the upper part of the protective cylinder fixedly connected to the lifting pipe and the lower part of the protective cylinder sleeved outside the outer sleeve.

[0016] In some embodiments, an upper limit plate is installed at the upper end of the lead screw, and a lower limit plate is installed at the lower part of the lead screw. A nut is screwed onto the lead screw between the upper limit plate and the lower limit plate. A retaining sleeve is provided at the top and bottom of the nut, and the retaining sleeve does not contact the lead screw.

[0017] In some embodiments, a positioning ring is installed on the lower inner wall of the fixed tube, a lead screw passes through the positioning ring and the bottom surface of the lower limiting plate is pressed against the positioning ring; a pin is vertically inserted on the lead screw located below the positioning ring, and a bearing and a ring washer sleeved on the lead screw are sandwiched between the pin and the positioning ring.

[0018] In some embodiments, an assembly hole is provided on the lower part of the tube wall, through which the bearing, ring washer and pin are installed on the lead screw; a cover plate is installed outside the assembly hole.

[0019] In some embodiments, a stop assembly is provided on the upper rear side of the column. The stop assembly includes a stop sleeve, a stop shaft, and a locking pin. The stop sleeve is fixed laterally to the rear side of the column, the stop shaft is detachably inserted into the stop sleeve, and the locking pin passes vertically through the stop sleeve and the stop shaft. The stop shaft is located above the lower support arm to limit the uppermost position of the rear end of the lower support arm when it rotates.

[0020] In some embodiments, at least two U-shaped anchor bolts are embedded in the ground, and multiple U-shaped anchor bolts are arranged in a crisscross pattern; the bottom end of the column is fixed to the ground by the U-shaped anchor bolts.

[0021] Based on the above technical solution, the electric drive device and basketball hoop in this utility model embodiment solve the shortcomings of the existing manual drive adjustment of the backboard height, and can easily realize the electric adjustment of the backboard height; moreover, the electric drive device also has the advantages of modularity, miniaturization, and maintenance-free operation. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the electric drive device of this utility model;

[0024] Figure 2 This is an exploded view of the structure of the electric drive device of this utility model;

[0025] Figure 3 This is a wiring diagram of the electric drive device of this utility model;

[0026] Figure 4 This is a structural schematic diagram of the basketball hoop of this utility model;

[0027] Figure 5 This is a structural cross-sectional view of the electric lifting device in the basketball hoop of this utility model;

[0028] Figure 6 for Figure 5 Enlarged view of point A in the image;

[0029] Figure 7 for Figure 5 Enlarged view of point B in the image;

[0030] Figure 8 for Figure 5 Enlarged view of point C in the image;

[0031] Figure 9 for Figure 4 Enlarged view of point D in the image;

[0032] Figure 10 for Figure 4 Enlarged view of point E in the image;

[0033] Figure 11 for Figure 4 The structural cross-sectional view at point E in the diagram.

[0034] In the picture:

[0035] 10. Column; 11. U-shaped anchor bolt; 12. Backboard; 13. Upper support arm; 14. Lower support arm; 15. Stop sleeve; 16. Stop shaft; 17. Locking pin; 18. Connecting seat; 20. Electric drive unit; 21. Electrical box; 211. Drive cavity; 212. Motor cavity; 213. Control cavity; 22. Motor; 221. Output shaft; 222. Coupling; 23. Switch; 24. Controller; 25. Switching power supply; 26. Power cord; 30. Transmission device; 31. Lifting pipe; 311. Lower retaining ring; 32. Fixing pipe; 321. Positioning ring; 322. Assembly hole; 323. Cover plate; 324. Oil nozzle; 33. Lead screw; 331. Upper limit plate; 332. Lower limit plate; 333. Pin; 334. Bearing; 335. Ring washer; 34. Nut; 341. Retaining sleeve; 35. Outer sleeve; 351. Upper retaining ring; 36. Compression spring; 37. Protective sleeve; 40. Transmission component. Detailed Implementation

[0036] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0037] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "top", "bottom", "inner", "outer", "left", "right", "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] refer to Figures 1-11 As shown, this utility model provides an electric drive device 20, which is connected to the lifting tube 31 on a basketball hoop and is used to provide driving force for the lifting and lowering movement of the lifting tube 31. The electric drive device 20 includes an electrical box 21, a motor 22, a controller 24, a switching power supply 25, and a switch 23.

[0041] The electrical box 21 is a sealed shell; the inner cavity of the electrical box 21 includes a drive cavity 211, a motor cavity 212 and a control cavity 213 that are isolated from each other; the drive cavity 211 and the motor cavity 212 are arranged side by side, and the control cavity 213 is located outside the drive cavity 211 and the motor cavity 212.

[0042] The motor 22 is installed in the motor cavity 212, and the output shaft 221 of the motor 22 extends into the drive cavity 211; one end of the lifting tube 31 is provided with a transmission component 40, which passes through the electrical box 21 and extends into the drive cavity 211, and the transmission component 40 is connected to the output shaft 221 of the motor 22 via a coupling 222.

[0043] The controller 24, the switching power supply 25, and the switch 23 are all installed inside the control cavity 213. The operating surface of the switch 23 is exposed on the outer surface of the electrical box 21. The switching power supply 25 is connected to an external AC power source via a power cord 26. The power cord 26 is sealed at the through-hole on the electrical box 21. The switching power supply 25 is close to the inner wall of the electrical box 21 and can dissipate heat through the cavity. The controller 24 is electrically connected to the switching power supply 25 via a power module. The motor 22 is connected to the switching power supply 25. The switch 23 is connected to both the motor 22 and the controller 24. The switch 23 is marked with an up or down indicator. The switch 23 is used to control the motor 22 to rotate forward or reverse, which in turn drives the lifting tube 31 to move up or down via the transmission component 40, so that the backboard 12 is raised or lowered.

[0044] It should be noted that the drive cavity 211, motor cavity 212 and control cavity 213 all have external openings. The external openings are sealed by gaskets and sealing gaskets to ensure the overall sealing of the electrical box 21 and enable the electric drive device 20 to meet the requirements for outdoor use.

[0045] In the above illustrative embodiment, through the specific arrangement of the electric drive device 20, the lifting tube 31 can be driven by the motor 22 to move, thereby easily achieving convenient adjustment of the height of the backboard 12; moreover, through the arrangement of multiple mutually isolated chambers in the electrical box 21, the motor 22, the output shaft 221 and coupling 222, the switching power supply 25 and the controller 24 are separated, realizing the partitioning of each component of the electric drive device 20, reducing the mutual influence between rotating and stationary components, improving the reliability of the electric drive device 20, and giving the electric drive device 20 the advantages of modularity, miniaturization and maintenance-free operation.

[0046] refer to Figure 2 , Figure 3 As shown, in some embodiments, the switching power supply 25 is used to convert external AC power into DC power. The DC power is stepped down by the power module and then input to the controller 24. The controller 24 outputs a pulse current signal. The motor 22 is a stepper motor 22. The V+, PUL+, and DIR+ ports of the motor 22 are connected to the switching power supply 25, and the PUL- port of the motor 22 is connected to the PUL- port of the controller 24. The pulse signal is transmitted to the PUL- port of the motor 22 through the PUL- port of the controller 24, and the pulse signal is always present after the switching power supply 25 is connected to AC power. The switch 23 is a self-resetting normally open 6-pin rocker switch 23. The first pin (K-1) of the switch 23 is connected to the DIR- port of the motor 22, the second pin (K-2) is connected to both the start terminal of the controller 24 and the V- port of the motor 22, the third pin (K-3), the fourth pin (K-4), and the fifth pin (K-5) are grounded, and the sixth pin (K-6) is left floating.

[0047] To further explain, the configuration of switch 23 forms two mutually isolated circuits. When the first pin (K-1) is connected to the third pin (K-3) and the second pin (K-2) is connected to the fourth pin (K-4), the V-port of motor 22 and the start-up terminal of controller 24 are both connected to the GND ground terminal, and the DIR-port of motor 22 is also connected to the GND ground terminal, causing motor 22 to reverse. When the first pin (K-1) is connected to the sixth pin (K-6) and the second pin (K-2) is connected to the fifth pin (K-5), the V-port of motor 22 and the start-up terminal of controller 24 are both connected to the GND ground terminal, and the DIR-port of motor 22 is not connected and remains floating, causing motor 22 to reverse. 22 will rotate forward; therefore, when the up or down indicator on switch 23 is pressed and held, DC power is connected to motor 22, and motor 22 starts to rotate forward or reverse, driving the lifting tube 31 to extend or retract, thereby causing the backboard 12 to rise or fall; when switch 23 is released, the first pin (K-1) is disconnected from the third pin (K-3) or the sixth pin (K-6), and the second pin (K-2) is disconnected from the fourth pin (K-4) or the fifth pin (K-5), that is, switch 23 automatically returns to the normally open position, the DC power connected to motor 22 is disconnected, motor 22 stops rotating, lifting tube 31 stops extending or retracting, and the height adjustment of backboard 12 is completed and maintained in the current position.

[0048] The above illustrative embodiment details the component arrangement within the electric drive device 20 and the wiring arrangement between the components. Through the matching connection between the stepper motor 22, the controller 24 and the self-resetting normally open 6-pin rocker switch 23, after the switching power supply 25 is powered on, the backboard 12 can be easily controlled to rise or fall by pressing the up or down indicator on the switch 23. When the backboard 12 reaches the target height, releasing the switch 23 will lock the height of the backboard 12.

[0049] refer to Figures 1-11 As shown, this utility model also provides a basketball hoop, including a column 10, a backboard 12 disposed on the front side of the column 10, and an electric lifting device disposed on the rear side of the column 10; wherein the electric lifting device includes a transmission device 30 and the aforementioned electric drive device 20.

[0050] The upright post 10 is vertically fixed to the ground. The backboard 12 is movably connected to the front of the upright post 10 via an upper support arm 13 and a lower support arm 14. The upper support arm 13, the backboard 12, the lower support arm 14 and the upright post 10 are hinged to form a four-bar linkage. The backboard 12 is equipped with a basket and net on the front.

[0051] The transmission device 30 includes a transmission component 40, a lifting pipe 31, and a fixed pipe 32 located below the lifting pipe 31 and coaxially arranged with it. The upper end of the lifting pipe 31 is hinged to one end of the lower support arm 14 extending from the rear side of the column 10, and the lower end of the lifting pipe 31 is inserted into the fixed pipe 32. The lower part of the fixed pipe 32 is hinged to the column 10 via a connecting seat 18, and the electrical box 21 is sealed to the lower end of the fixed pipe 32. It can be understood that the lower end of the fixed pipe 32 is provided with a connecting flange, and a sealed connection is achieved between it and the electrical box 21 through bolts and a sealing gasket. The transmission component 40 includes a lead screw 33 and a nut 34. The lead screw 33 passes through the fixed tube 32, and the lower end of the lead screw 33 extends into the drive cavity 211 to connect with the output shaft 221 of the motor 22. The lead screw 33 and the output shaft 221 of the motor 22 are coaxially arranged, and the upper end of the lead screw 33 is located inside the lifting tube 31. A wear-resistant sleeve or a small bearing can be provided on the wall of the electrical box 21 at the through-hole of the lead screw 33, and pins or other limiting structures are provided on one or both sides to prevent the wear-resistant sleeve or small bearing from dislodging. The nut 34 is installed in the lower inner wall of the lifting tube 31 and is screwed to the lead screw 33.

[0052] When motor 22 starts, the output shaft 221 of motor 22 rotates, and the lead screw 33 rotates synchronously with the output shaft 221 of motor 22, driving the nut 34 to move along the lead screw 33. Under the drive of the nut 34, the lifting tube 31 moves axially relative to the fixed tube 32, that is, it extends or shortens relative to the fixed tube 32, thereby driving the lower support arm 14 to rotate around the hinge point between the lower support arm 14 and the column 10, and then driving the upper support arm 13 in the four-bar linkage to rotate and the backboard 12 to rise or fall, thereby realizing the adjustment of the height of the backboard 12, that is, the height of the basket. When motor 22 is not working, the lead screw 33 and the nut 34 are locked together, the lifting tube 31 will not move, so the height of the backboard 12, that is, the height of the basket, remains unchanged.

[0053] In the above illustrative embodiment, by setting an electric drive device 20 and a transmission device 30 on the rear side of the column 10, the height of the backboard 12 can be easily adjusted by using a motor 22, which solves the problem of time-consuming and laborious manual adjustment of the height of the backboard 12. Moreover, the motor 22 mainly drives the movement of the backboard 12 and the upper and lower support arms 14, and the load on the motor 22 is relatively small. In addition, the electric drive device 20 has a compact structure and occupies little space, which solves the problem of large space occupation and safety hazards of manual cranking.

[0054] refer to Figure 5 , Figure 7 , Figure 8As shown, in some embodiments, the transmission device 30 further includes an outer sleeve 35 and a compression spring 36. The outer sleeve 35 is fitted over the fixed tube 32 and the rising tube 31, with its lower end connected to the side wall of the fixed tube 32. An upper retaining ring 351 is installed on the inner wall of the upper end of the outer sleeve 35. The rising tube 31 passes through the upper retaining ring 351, and a lower retaining ring 311 is installed on the outer wall of the rising tube 31 below the upper retaining ring 351. The compression spring 36 is fitted over the rising tube 31 and sandwiched between the upper retaining ring 351 and the lower retaining ring 311. The number of compression springs 36 is at least one. When the rising tube 31 moves axially back and forth relative to the fixed tube 32, the lower retaining ring 311 moves synchronously with the rising tube 31, and the distance between the upper retaining ring 351 and the lower retaining ring 311 changes, causing the elastic force of the compression spring 36 to change accordingly. This illustrative embodiment uses a compression spring 36 to balance the weight of the backboard 12, which helps to reduce effort when the backboard 12 is raised; the outer sleeve 35 protects the compression spring 36.

[0055] refer to Figure 5 , Figure 8 , Figure 9 As shown, in some embodiments, the transmission device 30 further includes a protective cylinder 37 covering the outside of the lifting pipe 31, with the top of the protective cylinder 37 closed; the upper part of the protective cylinder 37 is fixedly connected to the lifting pipe 31, and the lower part of the protective cylinder 37 is sleeved on the outside of the outer sleeve 35; the protective cylinder 37 moves synchronously with the lifting pipe 31 to provide protection for the transmission device 30, including the lifting pipe 31, to prevent external rain, snow and dust from corroding the transmission device 30 and to meet the needs of outdoor use.

[0056] refer to Figure 5 , Figure 7 As shown, in some embodiments, an upper limit plate 331 is installed at the upper end of the lead screw 33, and the upper limit plate 331 is located inside the lifting tube 31; a lower limit plate 332 is also installed at the lower part of the lead screw 33, and the lower limit plate 332 is located inside the fixing tube 32; a nut 34 is screwed onto the lead screw 33 between the upper limit plate 331 and the lower limit plate 332. A retaining sleeve 341 is provided at the top and bottom of the nut 34, and the retaining sleeve 341 does not contact the lead screw 33. This illustrative embodiment limits the movement range of the nut 34, i.e., the extension limit of the lifting tube 31, by setting the upper limit plate 331 and the lower limit plate 332 on the lead screw 33, thereby limiting the adjustment range of the backboard 12 height; the retaining sleeve 341 prevents the nut 34 from seizing with the lead screw 33 when it moves to the upper and lower limit plates 332.

[0057] refer to Figure 4 , Figure 10 , Figure 11As shown, in some embodiments, a positioning ring 321 is installed on the lower inner wall of the fixed tube 32, the lead screw 33 passes through the positioning ring 321 and the bottom surface of the lower limiting plate 332 is pressed against the positioning ring 321; a pin 333 is vertically inserted into the lead screw 33 located below the positioning ring 321, and a bearing 334 and a ring washer 335 are sandwiched between the pin 333 and the positioning ring 321 and are sleeved on the lead screw 33; by setting the positioning ring 321 and the pin 333, the lead screw 33 is axially limited to prevent the lead screw 33 from moving; by setting the bearing 334, small assembly errors are eliminated, making the lead screw 33 rotate more smoothly and improving its service life. In some embodiments, an assembly hole 322 is provided on the lower part of the wall of the fixed tube 32 so that the bearing 334, the ring washer 335, and the pin 333 can be installed on the lead screw 33 through the assembly hole 322; a cover plate 323 is installed outside the assembly hole 322 to seal and protect the fixed tube 32. An oil nozzle 324 is also installed on the side wall of the fixed tube 32 above the positioning ring 321, through which grease can be added to the inside of the fixed tube 32 to maintain smooth transmission between the lead screw 33 and the nut 34.

[0058] refer to Figure 4 , Figure 9 As shown, in some embodiments, a stop assembly is provided on the upper rear side of the column 10. The stop assembly includes a stop sleeve 15, a stop shaft 16, and a locking pin 17. The stop sleeve 15 is laterally fixed to the rear side of the column 10, that is, the stop sleeve 15 extends along the left and right direction of the column 10. The stop sleeve 15 can be welded to the column 10. The stop shaft 16 is detachably inserted into the stop sleeve 15. The locking pin 17 penetrates vertically through the stop sleeve 15 and the stop shaft 16 to lock the stop shaft 16 onto the stop sleeve 15 and prevent the stop shaft 16 from coming out of the stop sleeve 15. The locking pin 17 includes a pin and elastic clamps connected to both ends of the pin. Further, the length of the stop sleeve 15 is less than the minimum distance between the lower support arm 14 and the left and right sides of the column 10, and the length of the stop shaft 16 is greater than the minimum distance between the lower support arm 14 and the left and right sides of the column 10. When the lower support arm 14 is connected to the upright post 10, after the lower support arm 14 is rotated to a suitable angle, the stop shaft 16 is inserted into the stop sleeve 15, and then the pin is inserted and the elastic band is locked. At this time, the stop shaft 16 is located above the lower support arm 14, which limits the uppermost position of the rear end of the lower support arm 14 when it rotates, that is, limits the lowest position of the height of the backboard 12, further ensuring safety when the height of the backboard 12 is lowered.

[0059] refer to Figure 4 , Figure 5As shown, in some embodiments, at least two U-shaped anchor bolts 11 are embedded in the ground, and multiple U-shaped anchor bolts 11 are arranged in a crisscross pattern. The bottom end of the column 10 is provided with a connecting flange to fix the column 10 to the ground via the U-shaped anchor bolts 11. Furthermore, during the installation of the column 10, the U-shaped anchor bolts 11 are usually first embedded in the ground concrete. After the concrete has completely solidified, the column 10 is then connected to the U-shaped anchor bolts 11. The crisscross arrangement of multiple U-shaped anchor bolts 11 ensures the stability of the connection between the column 10 and the ground. In addition, since the column 10 is installed on the ground via the U-shaped anchor bolts 11, there is no need to set up an additional base, which can reduce the overall shape and floor space of the basketball hoop.

[0060] In summary, the electric drive device 20 and basketball hoop of this utility model can easily realize the electric adjustment of the height of the backboard 12, solving the problems of time-consuming and laborious manual adjustment of the height of the backboard 12, complex drive-related structure settings and safety hazards. Moreover, the overall structure of the basketball hoop is compact and occupies a small area, making it suitable for mass production and widespread application.

[0061] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0062] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An electric drive device characterized by comprising: The electric drive device is connected to the lifting tube on the basketball hoop and is used to provide driving force for the lifting and lowering movement of the lifting tube; the electric drive device includes: An electrical box is a sealed shell; the internal cavity of the electrical box includes a drive cavity, a motor cavity and a control cavity that are isolated from each other, the drive cavity and the motor cavity are arranged side by side, and the control cavity is located outside the drive cavity and the motor cavity; An electric motor is installed inside the motor cavity, and the output shaft of the motor extends into the drive cavity; one end of the lifting tube is provided with a transmission component, which passes through the electrical box to extend into the drive cavity, and is connected to the output shaft of the motor via a coupling; The controller, switching power supply, and switch are all installed inside the control cavity, with the operating surface of the switch exposed on the outer surface of the electrical box. The switching power supply is connected to an external AC power source via a power cord, and the controller is electrically connected to the switching power supply via a power module. The motor is connected to the switching power supply. The switch is connected to the motor and the controller to control the motor to rotate forward or backward, thereby driving the lifting tube to move up and down via the transmission component.

2. The electrical drive device according to claim 1, characterized in that The motor is a stepper motor. Its V+, PUL+, and DIR+ ports are connected to the power module, and its PUL- port is connected to the controller's PUL- port. The switch is a self-resetting normally open 6-pin rocker switch. The first pin of the switch is connected to the motor's DIR- port, the second pin is connected to both the controller's start terminal and the motor's V- port, the third, fourth, and fifth pins are grounded, and the sixth pin is left floating. When the switch is pressed, the first pin connects to either the third or sixth pin, and the second pin connects to either the fourth or fifth pin, causing the motor to rotate forward or backward. When the switch is released, the first pin disconnects from either the third or sixth pin, and the second pin disconnects from either the fourth or fifth pin, causing the motor to stop.

3. A basketball goal characterized by, include: The column is vertically fixed to the ground; The backboard is movably connected to the front side of the upright via an upper support arm and a lower support arm, and the upper support arm, the backboard, the lower support arm and the upright are hinged to form a four-bar linkage. An electric lifting device is disposed on the rear side of the column, and includes a transmission device and an electric drive device as described in claim 1 or 2; the transmission device includes a transmission component, a lifting tube, and a fixed tube located below the lifting tube and coaxially arranged with it; the upper end of the lifting tube is hinged to one end of the lower support arm extending out of the rear side of the column, and the lower end is inserted into the fixed tube, the lower part of the fixed tube is hinged to the column, and the electrical box is sealed and connected to the lower end of the fixed tube; the transmission component includes a lead screw and a nut, the lead screw is inserted into the fixed tube, and the lower end of the lead screw extends into the drive cavity to connect with the motor output shaft; the nut is installed in the inner wall of the lower end of the lifting tube, and the nut is screwed to the lead screw; when the motor starts, the lead screw rotates with the motor output shaft, driving the nut and the lifting tube to move relative to the fixed tube, thereby driving the lower support arm and the upper support arm to rotate to realize the lifting of the backboard.

4. The basketball goal of claim 3, wherein, The transmission device also includes an outer sleeve and a compression spring; the outer sleeve is fitted outside the fixed tube and the lifting tube, the lower end of the outer sleeve is connected to the side wall of the fixed tube, and an upper retaining ring is installed on the inner wall of the upper end of the outer sleeve; a lower retaining ring is installed on the outer wall of the lifting tube below the upper retaining ring, and the compression spring is fitted outside the lifting tube and sandwiched between the upper and lower retaining rings.

5. The basketball goal of claim 4, wherein, The transmission device also includes a protective cylinder covering the outside of the lifting pipe. The upper part of the protective cylinder is fixedly connected to the lifting pipe, and the lower part of the protective cylinder is sleeved on the outside of the outer sleeve.

6. The basketball goal of claim 3 wherein, An upper limit plate is installed at the upper end of the lead screw, and a lower limit plate is installed at the lower part of the lead screw. The nut is screwed onto the lead screw between the upper limit plate and the lower limit plate. The top and bottom ends of the nut are respectively provided with retaining sleeves, which do not contact the lead screw.

7. The basketball goal of claim 6, wherein, A positioning ring is installed on the lower inner wall of the fixed tube. The lead screw passes through the positioning ring and the bottom surface of the lower limiting plate is pressed against the positioning ring. A pin is vertically inserted into the lead screw located below the positioning ring. A bearing and a ring washer sleeved on the lead screw are sandwiched between the pin and the positioning ring.

8. The basketball goal of claim 7, wherein, An assembly hole is provided on the lower part of the tube wall of the fixed tube, and the bearing, ring washer and pin are installed on the lead screw through the assembly hole; a cover plate is installed outside the assembly hole.

9. The basketball goal of claim 3, wherein, The upper rear side of the column is provided with a stop assembly, which includes a stop sleeve, a stop shaft and a locking pin; the stop sleeve is fixed laterally to the rear side of the column, the stop shaft is detachably inserted into the stop sleeve, and the locking pin passes vertically through the stop sleeve and the stop shaft; the stop shaft is located above the lower support arm to limit the uppermost position of the rear end of the lower support arm when it rotates.

10. The basketball goal of claim 3, wherein, At least two U-shaped anchor bolts are embedded in the ground, and multiple U-shaped anchor bolts are arranged in a crisscross pattern; the bottom end of the column is fixed to the ground by U-shaped anchor bolts.

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