A badminton net rack bottom net height adjusting and positioning device and a method for using the same

Abstract

The application discloses a badminton net frame bottom net height adjusting and positioning device and a use method thereof, which comprises a positioning assembly, a positioning rod connected to a support column and capable of being lifted and lowered, and a fixed support arranged outside the support column, a positioning groove is formed in the support column, the positioning assembly comprises a plurality of height adjusting and positioning blocks stacked together in the height direction, a positioning hole for supporting the positioning rod is formed in the inner end of the height adjusting and positioning block, a non-integral circular side insertion hole is formed in the outer end of the height adjusting and positioning block, a circular side rotation limiting hole is formed in the height adjusting block between the side insertion hole and the positioning hole, a containing groove for containing the positioning assembly is formed in the outer side of the positioning groove of the support column, a plurality of groups of push-pull assemblies corresponding to the height adjusting and positioning blocks are connected to the fixed support, and the push-pull assembly comprises a push-pull plate capable of pulling the corresponding height adjusting and positioning block out of the support column or pushing the corresponding height adjusting and positioning block into the containing groove.

Description

Technical Field

[0001] This invention relates to the field of badminton net frame technology, and in particular to a badminton net frame bottom net height adjustment and positioning device. Background Technology

[0002] In the prior art, an invention patent entitled "A Badminton Net Frame" with publication number CN 113058244 B and publication date of November 26, 2021 is disclosed. In this patent, a first pocket and a second pocket are respectively provided at the top and bottom ends of the net along the width direction. Positioning grooves are formed on the side walls of two opposing pillars. One end of a first connecting rod is connected to the inner wall of the positioning groove, and the other end of the first connecting rod is connected to the first pocket. One end of a second connecting rod is connected to the second pocket, and a lifting drive assembly is provided at the lower end of the other end of the second connecting rod. Connecting components are provided between the first connecting rod and the first pocket, and between the second connecting rod and the second pocket. A positioning rod is provided at the lower end of the positioning groove. Multiple positioning holes adapted to the positioning rod are formed through the pillars. The second pocket moves from one side of the positioning rod, through the lower end of the positioning rod, to the other side of the positioning rod. Adjusting the height of the second pocket adjusts the net area. Initially, the positioning rod is at its lowest position. When the height of the second bag needs to be adjusted, rotate the telescopic rod to offset the fixing block and the annular protrusion, stabilize the position of the second rod in the width direction, rotate the second rod to stabilize the first rod and prevent it from rotating, shorten the telescopic rod, move the telescopic rod to the right away from the left positioning rod, and then screw in the first rod so that the gap between the first rod and the support is large enough to accommodate the positioning rod. Unscrew the left positioning rod and screw it into the appropriate positioning hole above. Then move the telescopic rod and the right positioning rod up together, and screw the right positioning rod into the corresponding positioning hole of the right support. Rotate the second rod in the opposite direction to move the first rod to the left and insert it into the left positioning rod. Then rotate the telescopic rod to align the fixing block and the annular flange. The above process is cumbersome and requires manual operation, which is time-consuming and labor-intensive. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the problems existing in the positioning rods of the above and / or existing badminton net frames, the present invention is proposed.

[0005] Therefore, the problem that this invention aims to solve is that the existing technology requires manual adjustment of the positioning rod used to support the net, which is time-consuming, labor-intensive, and cumbersome. This invention can directly replace the original two positioning rods, fixing springs, and telescopic rods with a single positioning rod, which can not only facilitate the height adjustment of the positioning rod, but also achieve reliable positioning after height adjustment.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a badminton net frame bottom net height adjustment and positioning device, comprising, A positioning rod is connected to a support column, and the support column has a positioning groove. The feature is that it includes: The positioning assembly includes several height-adjustable positioning blocks stacked together in the height direction. The inner end of the height-adjustable positioning block has a positioning hole for supporting the positioning rod, and the outer end of the height-adjustable positioning block has a non-circular side insertion hole. A circular side rotation limiting hole is formed on the height-adjustable block between the side insertion hole and the positioning hole. The diameter of the side rotation limiting hole is larger than the minimum diameter of the side insertion hole, and the diameter of the side rotation limiting hole is the same as the maximum diameter of the insertion hole. The support column on the outside of the positioning groove has a receiving groove for just accommodating the positioning component. A limited rotating plate is fixed on the support column on the outside of the receiving groove in the front-to-back direction away from the push-pull plate. When the height adjustment positioning block is pulled out, the end of the height adjustment positioning block in the front-to-back direction away from the push-pull plate is attached to the limited rotating plate. The positioning rod can be raised and lowered; A fixed bracket is installed on the outside of the support column. Several sets of push-pull components are connected to the fixed bracket, each corresponding to a height adjustment positioning block. The push-pull components include push-pull plates that can move horizontally in the left and right directions and can pull the corresponding height adjustment positioning block out of the support column or push it into the receiving groove.

[0007] As a preferred embodiment of the badminton net frame bottom net height adjustment and positioning device of the present invention, the device is characterized in that it further includes a lifting assembly, the lifting assembly including a lifting plate that can be lifted and lowered and disposed on the outside of the support column, and two connectors that can be connected to the height adjustment and positioning block are connected to the lifting plate.

[0008] As a preferred embodiment of the badminton net frame bottom net height adjustment and positioning device of the present invention, the connecting member includes a circular lifting and rotating part, a lifting and rotating limiting part is fixed on the lower side of the lifting and rotating part, the upper end of the height adjustment positioning block has a non-circular upper insertion hole, the height adjustment positioning block below the upper insertion hole has a circular upper rotation limiting hole, the lifting and rotating limiting part can be inserted into the upper insertion hole, the outer edge of the lifting and rotating limiting part can rotate around the upper rotation limiting hole, the upper side of the lifting and rotating limiting part can abut against the height adjustment positioning block below the upper insertion hole, and the diameter of the lifting and rotating part is not greater than the minimum hole diameter of the upper insertion hole.

[0009] As a preferred embodiment of the badminton net frame bottom net height adjustment and positioning device of the present invention, the device is characterized in that: a lifting and rotating motor is fixedly connected to the upper side of the lifting plate, a drive wheel is connected to the lifting and rotating motor, the lower side of the drive wheel is fixedly fixed to the upper side of a lifting and rotating part, and a driven wheel is fixedly connected to the upper side of another lifting and rotating limiting part via a corresponding lifting and rotating part, and the drive wheel is connected to the driven wheel via a transmission belt.

[0010] As a preferred embodiment of the badminton net frame bottom net height adjustment and positioning device of the present invention, the push-pull assembly further includes a transmission shaft rotatably connected to a fixed bracket. The transmission shaft between the fixed bracket and the support column is not a complete circle. A movable rotating sleeve is slidably connected to the transmission shaft. A movable support part is fixed to one end of the movable rotating sleeve away from the transmission shaft. The movable support part is rotatably connected to the push-pull plate. A side rotating part is fixedly connected to the inner side of the movable support part. A side rotating limiting part is fixed to the side of the side rotating part away from the movable support part. The side rotating limiting part can just pass through the side insertion hole and extend into the side rotating limiting hole. The outer edge of the side rotating limiting part can rotate around the side rotating limiting hole. When the side of the side rotating limiting part away from the side rotating part abuts against the height adjustment positioning block on the inner side of the side rotating limiting hole in the axial direction, the side of the side rotating limiting part opposite to the side rotating part can abut against the height adjustment positioning block on the outer side of the side rotating limiting hole in the axial direction.

[0011] As a preferred embodiment of the badminton net frame bottom net height adjustment and positioning device of the present invention, the feature is that: the movable support part has an annular insertion groove, the push-pull plate has a groove at one end in the front-rear direction, the push-pull plate at one end in the front-rear direction can be inserted into the insertion groove, and the movable support part at the inner edge of the insertion groove can rotate along the push-pull plate at the outer edge of the groove.

[0012] As a preferred embodiment of the badminton net frame bottom net height adjustment and positioning device of the present invention, the device is characterized in that: a drive motor is fixedly connected to the outside of the fixed bracket, the drive motor is connected to the bottommost transmission shaft, a drive gear is connected to the bottommost transmission shaft, driven gears are connected to each of the upper transmission shafts, the bottommost driven gear meshes with the drive gear, and two adjacent driven gears mesh with each other.

[0013] As a preferred embodiment of the badminton net frame bottom net height adjustment and positioning device of the present invention, the push-pull assembly further includes a push-pull motor fixedly connected to the outside of the fixed bracket, and a movable screw rotatably connected between the fixed bracket and the support column is connected to the push-pull motor, and the push-pull plate is threadedly connected to the movable screw.

[0014] As a preferred embodiment of the badminton net frame bottom net height adjustment and positioning device of the present invention, the device is characterized in that: a plurality of limiting plates corresponding one-to-one with the height adjustment and positioning blocks are arranged on the support column inside the positioning groove. In the initial state, the height adjustment and positioning blocks are restricted between the limiting plates and the side rotation limiting part.

[0015] Another object of the present invention is to provide a method for positioning a positioning rod using a badminton net height adjustment and positioning device, comprising the following steps: In the initial state, the positioning rod is inserted into the positioning hole of the bottom height adjustment positioning block, and each push-pull component counted from bottom to top is defined as the first push-pull component, the second push-pull component, ..., the nth push-pull component; This example illustrates how to adjust the bottom of the badminton net to the position of the second height adjustment hole from the bottom. The first moving rotating sleeve is rotated 90 degrees, the first side rotation limit part is aligned with the corresponding side insertion hole, the drive shaft stops rotating, the push-pull plate moves away from the support column, the first side rotation limit part leaves the set position, and the push-pull plate stops moving. Control the second push-pull plate to move away from the support column. The push-pull plate pulls the corresponding height adjustment positioning block away from the receiving groove, so that the lifting and rotating part is aligned with the upper rotation limit hole. When the lower side of the lifting and rotating limit part abuts against the height adjustment positioning block, the lifting and rotating limit part rotates 90 degrees, and the upper and lower sides of the lifting and rotating limit part abut against the height adjustment positioning block respectively. The drive shaft rotates, causing the movable rotating sleeve to rotate. When the movable rotating sleeve rotates 90 degrees, the side rotation limit part aligns with the side insertion hole, and the drive shaft stops rotating. This causes the push-pull plate to move away from the support column. When the side rotation limit part leaves the height adjustment positioning block, the lifting plate moves down, aligning the original second height adjustment positioning block with the first height adjustment positioning block. The first push-pull plate moves towards the support column, and the first side rotation limit part extends into the side rotation limit hole through the side insertion hole. The first movable rotating sleeve rotates 90 degrees, causing the first movable rotating sleeve to stop rotating. The positioning rod drives the first height adjustment positioning block to rise. When the first height adjustment positioning block rises to the original position of the second height adjustment positioning block, the positioning rod stops moving upward. This causes the first push-pull plate to move in the direction of the support column, and the original second height adjustment positioning block is pushed into the receiving groove, so that it abuts against the limiting plate, thereby completing the height adjustment and positioning of the positioning rod.

[0016] The beneficial effects of this invention are as follows: A positioning rod is directly set between two pillars to support the bottom of the upwardly stacked net. Through the coordinated action of various motors, the position of the positioning rod in the height direction can be adjusted. The various height adjustment positioning blocks are stacked together in the height direction and have reliable support in the height direction. After the height adjustment is completed, the linear motor that realizes the height adjustment of the positioning rod is not under force. Each height adjustment positioning block is restricted in the width direction by the corresponding side limit rotation part and the corresponding limit plate, and will not move in the width direction, thus realizing the reliable positioning of the positioning rod. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is the front view of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 3 This is the three-dimensional structure of the packaging shell in the present invention when it is in a transparent state. Figure 1 .

[0020] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0021] Figure 5 for Figure 3 A magnified view of a section at point B in the middle.

[0022] Figure 6 This is the three-dimensional structure of the packaging shell in the present invention when it is in a transparent state. Figure 2 .

[0023] Figure 7 This is the three-dimensional structure of the packaging shell in the present invention when it is in a transparent state. Figure 3 .

[0024] Figure 8 for Figure 7 A magnified view of a section at point C.

[0025] Figure 9 This is a three-dimensional structural diagram of the height adjustment positioning block in this invention.

[0026] Figure 10 This is a three-dimensional structural diagram of the movable rotating sleeve in this invention.

[0027] In the diagram: 100 Positioning rod, 200 Support column, 300 Encapsulation housing, 400 Linear motor, 500 Lifting rod, 600 Positioning assembly, 601 Height adjustment positioning block, 601a Side insertion hole, 601b Side rotation limit hole, 601c Upper insertion hole, 601d Upper rotation limit hole, 700 Push-pull assembly, 701 Moving lead screw, 702 Guide rod, 703 Push-pull motor, 704 Drive motor, 705 Transmission shaft, 706 Push-pull plate, 707 Driven component Gear, 708 drive gear, 709 moving rotating sleeve, 709a moving support, 709a-1 insert countersunk groove, 709b side rotation limit part, 709c side rotating part, 800 lifting assembly, 801 lifting screw, 802 column, 803 lifting motor, 804 lifting rotating motor, 805 lifting plate, 806 lifting nut, 807 lifting rotating part, 808 lifting rotating limit part, 809 drive wheel, 810 transmission belt, 811 driven wheel. Detailed Implementation

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0031] Example 1 Reference Figure 1-3 , Figure 5-7 , Figure 9 and Figure 10 This is the first embodiment of the present invention, which provides a badminton net frame bottom net height adjustment and positioning device, which can facilitate the height adjustment and positioning of the positioning rod 100.

[0032] A badminton net stand height adjustment and positioning device includes a positioning component 600 and a positioning rod 100 connected to a support post 200 and capable of being raised and lowered. The specific structure for raising and lowering the positioning rod 100 is as follows: a linear motor 400 is fixedly connected to the support post 200 at the positioning slot; a lifting rod 500 extending upwards is connected to the linear motor 400; the lifting rod 500 is connected to the positioning rod 100 at the location of the positioning slot; a positioning slot is formed on the support post 200; the positioning component 600 includes several height-adjusting positioning blocks 601 stacked together in the height direction; the inner end of each height-adjusting positioning block 601 has a positioning hole for supporting the positioning rod 100; and the outer end of each height-adjusting positioning block 601 in the left-right direction has a non-circular shape. A side insertion hole 601a is provided. A circular side rotation limiting hole 601b is formed on the height adjustment block between the side insertion hole 601a and the positioning hole. The diameter of the side rotation limiting hole 601b is larger than the minimum diameter of the side insertion hole 601a, and the diameter of the side rotation limiting hole 601b is the same as the maximum diameter of the insertion hole. A fixed bracket is provided on the outside of the support column 200. Several sets of push-pull components 700, each corresponding to a height adjustment positioning block 601, are connected to the fixed bracket. A housing 300 with an opening on one side of the support column 200 is connected to the outside of the support column 200. The positioning component 600, the push-pull component 700, and the fixed bracket are all within the housing 300. The push-pull component 700 includes components capable of horizontal movement in the left-right direction and capable of... Pull the corresponding height adjustment positioning block 601 out of the support column 200 or push the push-pull plate 706 into the receiving groove, and rotatably connect the transmission shaft 705 to the fixed bracket. The transmission shaft 705 between the fixed bracket and the support column 200 is not a complete circle. A movable rotating sleeve 709 is slidably connected to the transmission shaft 705. A movable support part 709a is fixed to the end of the movable rotating sleeve 709 away from the transmission shaft 705. The movable support part 709a is rotatably connected to the push-pull plate 706. A side rotating part 709c is fixedly connected to the inner side of the movable support part 709a. A side rotating limit part 709b is fixed to the side of the side rotating part 709c away from the movable support part 709a. Several [items] are arranged on the support column 200 inside the positioning groove. The height adjustment positioning block 601 corresponds to a limiting plate. In the initial state, the height adjustment positioning block 601 is restricted between the limiting plate and the side rotation limiting part 709b. The side rotation limiting part 709b can just pass through the side insertion hole 601a and extend into the side rotation limiting hole 601b. The outer edge of the side rotation limiting part 709b can rotate around the side rotation limiting hole 601b. When the side of the side rotation limiting part 709b away from the side rotation part 709c abuts against the height adjustment positioning block 601 on the inner side of the side rotation limiting hole 601b in the axial direction, the side of the side rotation limiting part 709b opposite to the side rotation part 709c can abut against the height adjustment positioning block 601 on the outer side of the side rotation limiting hole 601b in the axial direction.The outer support column 200 of the positioning groove has a receiving groove for accommodating the positioning component 600. A limiting rotating plate is fixed on the support column 200 at the end away from the push-pull plate 706 in the front-back direction on the outer side of the receiving groove. When the height adjusting positioning block 601 is pulled out, the end of the height adjusting positioning block 601 away from the push-pull plate 706 in the front-back direction is attached to the limiting rotating plate.

[0033] When the height adjustment positioning block 601 needs to be pulled out, taking the middle height adjustment positioning block 601 as an example, the push-pull plate 706 is moved outward (i.e., in the left-right direction away from the support column 200). When the height adjustment positioning block 601 leaves the support column 200 to the set position, the push-pull plate 706 stops moving. The height adjustment positioning block 601 outside the support column 200 is stabilized to fix its height position. The drive shaft 705 is rotated, the rotating sleeve is rotated, and the side rotation limit part 709b rotates 90 degrees. After the side rotation limit part 709b is aligned with the side insertion hole 601a, the push-pull plate 706 continues to move in the direction away from the support column 200. When the side rotation limit part 709b just leaves the height adjustment positioning block 601, the push-pull plate 706 stops moving.

[0034] When the height adjustment positioning block 601 needs to be pushed into the receiving groove, first adjust the angle of the side rotation limit part to align it with the side insertion hole 601a. ​​The drive shaft 705 stops rotating, causing the push-pull plate 706 to move in the direction of the height adjustment positioning block 601. The push-pull plate 706 drives the side rotation support part to move in the direction of the support column 200. The side rotation support part just passes through the side insertion hole 601a and extends into the side rotation limit hole 601b. The drive shaft 705 rotates 90 degrees, and the side rotation limit part 709b and the side insertion hole 601a are misaligned, causing the push-pull plate 706 to move in the direction of the support column 200. The push-pull plate 706 drives the corresponding height adjustment positioning block 601 to move in the direction of the receiving groove. When the height adjustment positioning block 601 abuts against the limit plate, the push-pull plate 706 stops moving.

[0035] Specifically, the push-pull assembly 700 also includes a push-pull motor 703 fixedly connected to the outside of the fixed bracket. The push-pull motor 703 is connected to a movable lead screw 701 rotatably connected between the fixed bracket and the support column 200. Guide rods 702 are fixed between the fixed bracket and the support column 200 above and below the movable lead screw 701. The push-pull plate 706 slides left and right along the guide rods 702. The push-pull plate 706 is threadedly connected to the movable lead screw 701.

[0036] When adjusting the position of the push-pull plate 706 in the left and right directions, the push-pull motor 703 is controlled to operate, the moving screw 701 rotates, the moving screw 701 drives the push-pull plate 706 to move, and when the push-pull plate 706 moves to the set position, the push-pull motor 703 stops operating.

[0037] Specifically, a drive motor 704 is fixedly connected to the outside of the fixed bracket. The drive motor 704 is connected to the lowest transmission shaft 705. A drive gear 708 is connected to the lowest transmission shaft 705. Driven gears 707 are connected to each of the upper transmission shafts 705. The lowest driven gear 707 meshes with the drive gear 708. Adjacent driven gears 707 mesh with each other.

[0038] When it is necessary to adjust the angle of the side rotation limit part 709b, the drive motor 704 is controlled to operate, the transmission shaft 705 rotates, the transmission shaft 705 drives the movable rotating sleeve 709 to rotate, the movable rotating sleeve 709 drives the side limit rotating part to rotate, the angle adjustment is completed, and the drive motor 704 stops operating.

[0039] In actual implementation, one of these embodiments is provided on each of the left and right sides of the positioning rod 100.

[0040] In this embodiment, a positioning rod 100 is directly set between the two pillars 200 to support the bottom of the upwardly stacked net. By coordinating the rotation of the transmission shaft 705 or the rotation of the moving screw 701, the position adjustment of the positioning rod 100 in the height direction and its positioning after the height adjustment can be realized. The various height adjustment positioning blocks 601 are stacked together in the height direction and have reliable support in the height direction. After the height adjustment is completed, the linear motor 400 that realizes the height adjustment of the positioning rod 100 is not under force. Each height adjustment positioning block 601 is restricted in the width direction by the corresponding side limiting rotation part and the corresponding limiting plate, and will not move in the width direction, thus realizing the reliable positioning of the positioning rod 100.

[0041] Example 2 Reference Figure 3 , Figure 4 and Figures 7-10 This is the second embodiment of the present invention. This embodiment provides a badminton net frame bottom net height adjustment and positioning device, which can further realize the position adjustment of the height adjustment positioning block 601 in the height direction.

[0042] It also includes a lifting assembly 800, which includes a lifting plate 805 disposed on the outside of the support column 200. Two connecting parts rotatably connected to the lifting plate 805 and capable of connecting to a height adjustment positioning block 601 are mounted on the lifting plate 805. The two connecting parts can rotate simultaneously. Each connecting part includes a circular lifting rotating part 807, and a lifting rotating limiting part 808 is fixed to the lower side of the lifting rotating part 807. The upper end of the height adjustment positioning block 601 has a non-circular upper insertion hole 601c, and the lower side of the upper insertion hole 601 has a circular upper rotation limiting hole 601d. The lifting rotating limiting part 808 can be inserted precisely into the upper insertion hole 601d. 01c, the outer edge of the lifting and rotating limiting part 808 can just rotate around the upper rotating limiting hole 601d, the upper side of the lifting and rotating limiting part 808 can abut against the height adjustment positioning block 601 on the lower side of the upper insertion hole 601c, and the diameter of the lifting and rotating part 807 is not greater than the minimum hole diameter of the upper insertion hole 601c; the movable support part 709a has an annular insertion groove 709a-1, and the push-pull plate 706 has a groove at one end in the front-rear direction. The push-pull plate 706 at one end in the front-rear direction can just be inserted into the insertion groove 709a-1, and the movable support part 709a at the inner edge of the insertion groove 709a-1 can just rotate along the outer edge of the groove of the push-pull plate 706.

[0043] The upper end of the lifting plate 805 is always above the uppermost height adjustment positioning block 601. When the middle height adjustment positioning block 601 is pulled out of the support column 200 to the set position, that is, when the lifting rotating part 807 is aligned with the upper insertion hole 601c, the height adjustment positioning block 601 stops moving, causing the lifting plate 805 to descend. The lifting rotating part 807 passes through the upper insertion hole 601c and extends into the upper rotation limiting hole 601d. The lifting plate 805 stops descending, causing the connecting part to rotate. When the upper rotation limiting part rotates 90 degrees and is misaligned with the upper insertion hole 601c, the upper rotation limiting part and the height adjustment positioning block 601 are connected. At this time, the side rotation limiting part 709b can leave this height adjustment positioning block 601. The lifting plate 805 moves down, and the lifting plate 805 drives the height adjustment positioning block 601 to move in the height direction via the upper rotation limiting part. When the height adjustment positioning block 601 is raised or lowered to the set position, the lifting plate 805 stops moving.

[0044] Specifically, a lifting and rotating motor 804 is fixedly connected to the upper side of the lifting plate 805, and a drive wheel 809 is connected to the lifting and rotating motor 804. The lower side of the drive wheel 809 is fixed to the upper side of a lifting and rotating part 807, and a driven wheel 811 is fixedly connected to the upper side of another lifting and rotating limiting part 808 via a corresponding lifting and rotating part 807. The drive wheel 809 is connected to the driven wheel 811 via a transmission belt 810.

[0045] When it is necessary to adjust the angle of the upper rotation limit part, the lifting rotation motor 804 is activated, the driving wheel 809 rotates, and the driving wheel 809 drives the driven wheel 811 to rotate via the transmission belt 810. The two connecting parts rotate simultaneously. When the upper rotation limit part rotates to the set angle, the lifting rotation motor 804 stops operating.

[0046] Example 3 Reference Figure 3 This is the third embodiment of the present invention. This embodiment provides a badminton net frame bottom net height adjustment and positioning device, which can further realize the lifting and lowering of the lifting plate 805.

[0047] Specifically, a column 802 is fixedly connected to the outside of the support column 200, a vertically arranged lifting screw 801 is rotatably connected to the column 802, a lifting nut 806 is threadedly connected to the lifting screw 801 and slidably connected to the column 802, a lifting plate 805 is fixedly connected to the lifting nut 806, a lifting motor 803 is fixedly connected to the upper side of the column 802, and the lifting motor 803 is connected to the lifting screw 801.

[0048] When adjusting the height of the lifting plate 805, the lifting motor 803 is activated, the lifting screw 801 rotates, driving the lifting nut 806 to move. The lifting nut 806 drives the lifting plate 805 to move in the height direction. When the lifting plate 805 drives the height adjustment positioning block 601 to rise and fall to the set position via the upper rotation limit part, the lifting motor 803 stops operating.

[0049] Example 4 Reference Figures 1-10 This is the fourth embodiment of the present invention. This embodiment provides a method for positioning a positioning rod using a badminton net height adjustment and positioning device, including the following steps. In the initial state, the positioning rod 100 is inserted into the positioning hole of the lowest height adjustment positioning block 601, and the left and right sides of the side limit rotation part abut against the corresponding height adjustment positioning block 601 respectively. The push-pull components 700 counted from bottom to top are defined as the first push-pull component 700, the second push-pull component 700, ..., the nth push-pull component 700. This example illustrates how to adjust the bottom of the badminton net to the position of the second height adjustment hole from the bottom. The drive motor 704 is controlled to operate, the first moving rotating sleeve 709 rotates 90 degrees, the first side rotation limit part 709b aligns with the corresponding side insertion hole 601a, the transmission shaft 705 stops rotating, the first push-pull motor 703 is controlled to operate, so that the push-pull plate 706 moves away from the support column 200, the first side rotation limit part 709b leaves the set position, and the push-pull motor 703 stops operating. The drive motor 704 is activated, the rotating sleeve 709 rotates 90 degrees, the second push-pull motor 703 is activated, the second push-pull plate 706 moves away from the support column 200, the push-pull plate 706 pulls the corresponding height adjustment positioning block 601 away from the receiving groove, so that the lifting rotating part 807 is aligned with the upper rotation limit hole 601d, the second push-pull motor 703 stops, the lifting motor 803 is activated, the lifting plate 805 moves down, when the lower side of the lifting rotation limit part 808 touches the height adjustment positioning block 601, the lifting motor 803 stops, the lifting rotating motor 804 is activated, the lifting rotation limit part 808 rotates 90 degrees, and the upper and lower sides of the lifting rotation limit part 808 touch the height adjustment positioning block 601 respectively; The drive motor 704 actuates, causing the transmission shaft 705 to rotate, which in turn drives the movable rotating sleeve 709 to rotate. When the movable rotating sleeve 709 rotates 90 degrees, the side rotation limit part 709b aligns with the side insertion hole 601a, and the drive motor 704 stops. The second push-pull motor 703 actuates, causing the second push-pull plate 706 to move away from the support column 200. When the second side rotation limit part 709b moves away from the second height adjustment positioning block 601, the second push-pull motor 703 stops. The lifting motor 803... The action causes the lifting plate 805 to move down. When the original second height adjustment positioning block 601 is aligned with the first height adjustment positioning block 601, the lifting motor 803 stops operating, the first push-pull motor 703 operates, causing the first push-pull plate 706 to move in the direction of the support column 200, the first side rotation limit part 709b extends into the side rotation limit hole 601b through the side insertion hole 601a, the drive motor 704 operates, causing the first moving rotating sleeve 709 to rotate 90 degrees, and the drive motor 704 stops operating. When the linear motor 400 is activated, the lifting rod 500, via the positioning rod 100, causes the first height adjustment positioning block 601 to rise. When the first height adjustment positioning block 601 rises to the original position of the second height adjustment positioning block 601, the upper side of the original first height adjustment positioning block 601 abuts against the lower side of the third height adjustment positioning block 601. The linear motor 400 then stops, and the positioning rod 100 stops moving upward. The first push-pull motor 703 is activated, causing the first push-pull plate 706 to move towards the direction of the support column 200. The original second height adjustment positioning block 601 is pushed into the receiving groove, causing it to abut against the limiting plate. The lower side of the original first height adjustment positioning block 601 abuts against the upper side of the second height adjustment positioning block 601, thus completing the height adjustment and positioning of the positioning rod 100.

[0050] In this application, the directions are referenced to the front view. The direction perpendicular to the paper is the front-back direction, the horizontal direction perpendicular to the front-back direction is the left-right direction, the direction perpendicular to the paper and facing forward is the front, and vice versa is the back.

[0051] 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 badminton net stand bottom net height adjustment and positioning device, comprising a positioning rod (100) connected to a support column (200), wherein the support column (200) has a positioning groove, characterized in that: include, The positioning assembly (600) includes several height-adjustable positioning blocks (601) stacked together in the height direction. The inner end of the height-adjustable positioning block (601) has a positioning hole for supporting the positioning rod (100). The outer end of the height-adjustable positioning block (601) has a non-circular side insertion hole (601a). A circular side rotation limiting hole (601b) is opened on the height-adjustable block between the side insertion hole (601a) and the positioning hole. The diameter of the side rotation limiting hole (601b) is larger than the minimum diameter of the side insertion hole (601a). The diameter of the side rotation limiting hole (601b) is the same as the maximum diameter of the insertion hole. The support column (200) on the outside of the positioning groove has a receiving groove for just accommodating the positioning component (600); The positioning rod (100) can be raised and lowered. A linear motor (400) is fixedly connected to the support column (200) at the positioning slot. An upwardly extending lifting rod (500) is connected to the linear motor (400). The lifting rod (500) is connected to the positioning rod (100) at the location of the positioning slot. A fixed bracket is installed on the outside of the support column (200). Several sets of push-pull assemblies (700) are connected to the fixed bracket, each corresponding to a height adjustment positioning block (601). Each push-pull assembly (700) includes a push-pull plate (706) that can move horizontally in the left and right direction and can pull the corresponding height adjustment positioning block (601) out of the support column (200) or push it into the receiving groove, and a drive shaft (705) that is rotatably connected to the fixed bracket. A moving screw (701) is rotatably connected between the fixed bracket and the support column (200). The push-pull plate (706) is threaded onto the movable lead screw (701). A limited rotating plate is fixed on the support column (200) on the outer side of the receiving groove, away from the push-pull plate (706) in the front-back direction. When the height adjustment positioning block (601) is pulled out, the end of the height adjustment positioning block (601) away from the push-pull plate (706) in the front-back direction is attached to the limited rotating plate. The transmission shaft (705) between the fixed bracket and the support column (200) is not a complete circle, and a movable rotating sleeve (709) is slidably connected to the transmission shaft (705). The movable rotating sleeve (709) has a movable support part (709a) fixed at one end away from the drive shaft (705). The movable support part (709a) is rotatably connected to the push-pull plate (706). A side rotating part (709c) is fixedly connected to the inner side of the movable support part (709a). A side rotating limiting part (709b) is fixed on the side of the side rotating part (709c) away from the movable support part (709a). The side rotating limiting part (709b) can just pass through the side insertion hole (601a) and extend into the side. Inside the rotation limiting hole (601b), the outer edge of the side rotation limiting part (709b) can rotate around the side rotation limiting hole (601b). When the side of the side rotation limiting part (709b) away from the side rotation part (709c) abuts against the height adjustment positioning block (601) on the inner side of the side rotation limiting hole (601b) in the axial direction, the side of the side rotation limiting part (709b) opposite to the side rotation part (709c) can abut against the height adjustment positioning block (601) on the outer side of the side rotation limiting hole (601b) in the axial direction. The lifting assembly (800) includes a lifting plate (805) disposed on the outside of the support column (200) and capable of being lifted, wherein two connectors are connected to the lifting plate (805) and capable of being connected to the height adjustment positioning block (601).

2. The badminton net frame bottom net height adjustment and positioning device as described in claim 1, characterized in that: The connector includes a circular lifting and rotating part (807), and a lifting and rotating limiting part (808) is fixed on the lower side of the lifting and rotating part (807). The upper end of the height adjustment positioning block (601) has a non-circular upper insertion hole (601c). The height adjustment positioning block (601) below the upper insertion hole (601c) has a circular upper rotation limiting hole (601d). The lifting and rotating limiting part (808) can be inserted into the upper insertion hole (601c). The outer edge of the lifting and rotating limiting part (808) can rotate around the upper rotation limiting hole (601d). The upper side of the lifting and rotating limiting part (808) can abut against the height adjustment positioning block (601) below the upper insertion hole (601c). The diameter of the lifting and rotating part (807) is not greater than the minimum hole diameter of the upper insertion hole (601c).

3. The badminton net frame bottom net height adjustment and positioning device as described in claim 2, characterized in that: A lifting and rotating motor (804) is fixedly connected to the upper side of the lifting plate (805). A drive wheel (809) is connected to the lifting and rotating motor (804). The lower side of the drive wheel (809) is fixed to the upper side of a lifting and rotating part (807). A driven wheel (811) is fixedly connected to the upper side of another lifting and rotating limiting part (808) via a corresponding lifting and rotating part (807). The drive wheel (809) is connected to the driven wheel (811) via a transmission belt (810).

4. The badminton net frame bottom net height adjustment and positioning device as described in any one of claims 1 to 3, characterized in that: The movable support part (709a) has an annular insertion groove (709a-1), and the push-pull plate (706) has a groove at one end in the front-rear direction. The push-pull plate (706) can be inserted into the insertion groove (709a-1) at one end in the front-rear direction, and the movable support part (709a) at the inner edge of the insertion groove (709a-1) can rotate along the push-pull plate (706) at the outer edge of the groove.

5. The badminton net frame bottom net height adjustment and positioning device as described in claim 4, characterized in that: A drive motor (704) is fixedly connected to the outside of the fixed bracket. The drive motor (704) is connected to the lowest transmission shaft (705). A drive gear (708) is connected to the lowest transmission shaft (705). Driven gears (707) are connected to each of the upper transmission shafts (705). The lowest driven gear (707) meshes with the drive gear (708). Two adjacent driven gears (707) mesh with each other.

6. The badminton net frame bottom net height adjustment and positioning device as described in claim 1, characterized in that: The push-pull assembly (700) also includes a push-pull motor (703) fixedly connected to the outside of the fixed bracket, and the push-pull motor (703) is connected to the moving lead screw (701).

7. The badminton net frame bottom net height adjustment and positioning device as described in claim 1, characterized in that: On the support column (200) inside the positioning groove, there are several limiting plates that correspond one-to-one with the height adjustment positioning block (601). In the initial state, the height adjustment positioning block (601) is restricted between the limiting plate and the side rotation limiting part (709b).

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