Portable air discharge ball column

Abstract

This utility model discloses a portable volleyball column, including a base assembly and a column assembly. The base assembly includes a main base shell, with an arc-shaped sheet metal fixedly connected to one side of the main base shell. Rollers are rotatably connected to both ends of the main base shell near the bottom of the arc-shaped sheet metal. A first carrying slot is provided on the side of the main base shell near the rollers. A cover plate is rotatably connected to the top of the main base shell, and a carrying handle is fixedly connected to one end of the cover plate. A secondary base shell is fixedly connected to the side of the main base shell away from the arc-shaped sheet metal. Second carrying slots are symmetrically provided on both sides of one end of the secondary base shell. Through an innovative base protection structure, modular counterweight design, and multi-stage locking telescopic mechanism, the functionality of the volleyball column is ensured while perfectly solving the three major pain points of traditional products: damage to the field, cumbersome movement, and inconvenient adjustment. It combines high environmental friendliness with ease of operation.

Description

Technical Field

[0001] This utility model relates to the field of sports equipment technology, specifically a portable air volleyball post. Background Technology

[0002] Air volleyball is a mass sport that combines exercise, leisure, and entertainment. As a new sport, it is now increasingly favored by older people. Its playing style and scoring method are basically the same as those of competitive volleyball.

[0003] Currently, traditional portable volleyball posts are usually dragged or carried directly by the base when they are moved. Their bottom structure is prone to friction with soft surfaces such as rubber flooring, which leads to the following problems: (1) The hard base is prone to scratching the floor surface during the movement, especially causing irreversible scratches and damage to the rubber flooring of the gymnasium; (2) If the counterweight structure shifts during the movement, it may damage the ground due to local pressure concentration.

[0004] A portable air volleyball column is proposed to address the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a portable volleyball post to solve the problem mentioned in the background art that traditional portable volleyball posts are prone to scratching or damaging soft surfaces such as rubber flooring when moved due to hard friction, uneven force on the rollers, and offset of the counterweight.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a portable volleyball column, comprising a base assembly and a column assembly. The base assembly includes a main base shell, an arc-shaped sheet metal fixedly connected to one side of the main base shell, and rollers rotatably connected to both ends of the main base shell near the bottom of the arc-shaped sheet metal. A first carrying groove is provided on the side of the main base shell near the rollers. A cover plate is rotatably connected to the top of the main base shell, and a carrying handle is fixedly connected to one end of the cover plate. A secondary base shell is fixedly connected to the side of the main base shell away from the arc-shaped sheet metal, and second carrying grooves are symmetrically provided on both sides of one end of the secondary base shell.

[0007] The column assembly includes a lower column tube fixedly connected to the sub-base housing. An upper column tube is sleeved inside the lower column tube. A limiting groove is formed on one side of the bottom end of the upper column tube. A connecting shaft is fixedly connected to the inner wall of the lower column tube in the limiting groove. A nut is fixedly connected to the other side of the lower column tube relative to the limiting groove. A column connecting lock that penetrates the lower column tube and engages with the upper column tube is internally threaded in the nut. A support tube is sleeved inside the upper column tube. A sliding groove and eight longitudinally arranged positioning holes are formed on one side of the support tube. A limiting rod fixed to the inner wall of the upper column tube is slidably connected in the sliding groove. A positioning bolt coaxial with the positioning hole is provided at the top of the upper column tube. A positioning pin that assembles with the positioning hole is internally threaded in the positioning bolt. A tightening wheel is fixedly connected to the upper column tube below the positioning bolt. A guide wheel is rotatably connected to the top of the support tube. A support rod with both ends fixed to the inner wall of the upper column tube is fitted and connected to the bottom of the support tube.

[0008] Preferably, the central angle of the arc-shaped sheet metal is 90° to 120°, and the bottom edge of the arc-shaped sheet metal is flush with the outer surface of the main base housing.

[0009] Preferably, the column connecting lock includes a knob part, a threaded rod part, and a conical locking head, wherein the conical locking head forms an interference fit with the groove on the outer wall of the upper column tube.

[0010] Preferably, the positioning holes of the support tube are arranged at equal intervals, the center distance between adjacent positioning holes is 100mm, and the hole diameter is 0.5mm to 1mm larger than the diameter of the positioning post.

[0011] Preferably, the tightening wheel has anti-slip texture on its outer circumference, and its axis is arranged perpendicular to the axis of the positioning bolt.

[0012] Preferably, the cover plate is rotatably connected to the main base housing via a hinge, and the cover plate can rotate relative to the main base housing within a range of 0° to 180°.

[0013] Preferably, the main base housing and the secondary base housing are filled with counterweight material.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: This portable volleyball column, through its innovative base protection structure, modular counterweight design, and multi-stage locking telescopic mechanism, perfectly solves the three major pain points of traditional products—damage to the field, cumbersome movement, and inconvenient adjustment—while ensuring the functionality of the volleyball column. It also boasts high environmental friendliness and ease of operation. The specific details are as follows:

[0015] 1. Ground protection optimization

[0016] By incorporating a combination of curved sheet metal and dual rollers at the bottom of the main base housing, the curved sheet metal features a 90° to 120° central angle design with its bottom edge flush with the housing. When the support tube is pulled up at an angle, the bottom edge of the curved sheet metal 102 automatically lifts off the ground, making the rollers the sole load-bearing component (if the counterweight is too heavy, it can be removed to avoid localized pressure concentration and damage to the ground). This achieves the goal of preventing the bottom of the main base housing from damaging the ground during movement. The rollers use a rotating connection method to reduce the drag friction coefficient and achieve scratch-free movement.

[0017] 2. Improved structural stability

[0018] The linkage design between the secondary base shell and the main base shell, combined with the scientific filling of internal counterweight materials, ensures the vertical stability of the column while achieving balanced handling through symmetrical first and second carrying slots, preventing local pressure concentration caused by counterweight offset and fundamentally eliminating the risk of damaging the ground.

[0019] 3. Precise and reliable height adjustment

[0020] The column assembly adopts a three-stage telescopic structure (lower column tube, upper column tube, and support tube). Through the guiding fit between the limiting groove and the connecting shaft, and the interference lock of the nut and the tapered locking head of the column connection lock, rigid fixation is achieved after stepless adjustment. The support tube is constrained by the sliding constraint of the limiting rod and the sliding groove, combined with the insertion fit between the equally spaced positioning holes and the positioning column, to ensure the height adjustment accuracy. The anti-slip texture design of the tightening wheel enhances the stability of the rope fixation.

[0021] 4. Ergonomic optimization

[0022] The first handle slot and the handle on the cover form a double grip point. Combined with the 0°-180° flip function of the hinged cover, it can meet the needs of different handling postures. The coordinated layout of the rollers and the arc-shaped sheet metal allows the equipment to be moved with only a 15°-20° tilt angle when tilted, which greatly reduces the intensity of operation. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This utility model Figure 1 A schematic diagram of the rear view structure;

[0025] Figure 3 This is a schematic cross-sectional view of the column assembly in this utility model;

[0026] Figure 4 This is a cross-sectional structural diagram of the column assembly in this utility model from another perspective;

[0027] Figure 5 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0028] Figure 6 This utility model Figure 3 Enlarged structural diagram at point B;

[0029] Figure 7 This utility model Figure 4 Enlarged structural diagram at point C;

[0030] Figure 8 This utility model Figure 4 Enlarged structural diagram at point D.

[0031] In the diagram: 1. Base assembly; 101. Main base shell; 102. Arc-shaped sheet metal; 103. Roller; 104. First carrying slot; 105. Cover plate; 106. Handle; 107. Secondary base shell; 108. Second carrying slot; 2. Column assembly; 201. Lower column tube; 202. Upper column tube; 203. Limiting slot; 204. Connecting shaft; 205. Nut; 206. Column connecting lock; 207. Support tube; 208. Slide groove; 209. Limiting rod; 210. Positioning hole; 211. Positioning post; 212. Positioning bolt; 213. Tensioning wheel; 214. Guide wheel; 215. Support rod. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1-8This utility model provides a technical solution: a portable volleyball column, including a base assembly 1 and a column assembly 2. The base assembly 1 includes a main base shell 101, an arc-shaped sheet metal 102 fixedly connected to one side of the main base shell 101, and rollers 103 rotatably connected to both ends of the main base shell 101 near the bottom of the arc-shaped sheet metal 102. A first carrying groove 104 is provided on the side of the main base shell 101 near the rollers 103. A cover plate 105 is rotatably connected to the top of the main base shell 101, and a carrying handle 106 is fixedly connected to one end of the cover plate 105. A secondary base shell 107 is fixedly connected to the side of the main base shell 101 away from the arc-shaped sheet metal 102, and second carrying grooves 108 are symmetrically provided on both sides of one end of the secondary base shell 107. The central angle of the arc-shaped sheet metal 102 is 90° to 120°, and the bottom edge of the arc-shaped sheet metal 102 is flush with the outer surface of the main base shell 101.

[0034] The main base housing 101 is preferably 600mm, 430mm, or 400mm in size, while the secondary base housing 107 is preferably 600mm, 215mm, or 200mm in size. This design enhances the overall harmony and aesthetics of the device. The integrated design of the main base housing 101 and the curved sheet metal 102 allows the curved sheet metal 102 to automatically lift off the ground when the device is tilted at 15°-20°, reducing movement resistance and allowing for easy handling by a single person. The 90°-120° central angle design of the curved sheet metal 102 ensures a safe clearance from the ground during movement, and the elastic tread of the rollers 103 completely eliminates ground scratches caused by traditional equipment movement. The first carrying slot 104 and the second carrying slot 108 are symmetrically designed, with anti-slip silicone embedded in the slots for easy handling by the operator. The main base housing 101 and the secondary base housing 107 have pre-reserved standardized counterweight compartments, which can be quickly loaded and unloaded via a 180° rotating cover 105, thus adapting to different site requirements.

[0035] The column assembly 2 includes a lower column tube 201 fixedly connected to the sub-base housing 107. An upper column tube 202 is sleeved inside the lower column tube 201. A limiting groove 203 is formed on one side of the bottom end of the upper column tube 202. A connecting shaft 204 fixedly connected to the inner wall of the lower column tube 201 is provided in the limiting groove 203. A nut 205 is fixedly connected to the other side of the lower column tube 201 opposite to the limiting groove 203. A column connecting lock 206, which passes through the lower column tube 201 and engages with the upper column tube 202, is internally threaded into the nut 205. A support tube 207 is sleeved inside the upper column tube 202. 07 has a sliding groove 208 and eight longitudinally arranged positioning holes 210 on one side. A limiting rod 209 is slidably connected to the inner wall of the upper column tube 202 in the sliding groove 208. The top of the upper column tube 202 is provided with a positioning bolt 212 coaxial with the positioning hole 210. The positioning bolt 212 is threaded with a positioning post 211 assembled with the positioning hole 210. A tightening wheel 213 is fixedly connected to the upper column tube 202 below the positioning bolt 212. A guide wheel 214 is rotatably connected to the top of the support tube 207. A support rod 215 with both ends fixed to the inner wall of the upper column tube 202 is attached to the bottom of the support tube 207.

[0036] The system employs a three-tiered nested design consisting of a lower column tube 201, an upper column tube 202, and a support tube 207, with precise fit clearances to achieve height adjustment. When the column height is adjusted to 2.20 meters, it can be used in men's competition venues; when adjusted to 2.00 meters, it can be used in women's competition venues; when adjusted to 1.50 meters, it can be used in children's competition venues or badminton courts; and when adjusted to 0.9 meters, it can be used in pickleball venues. The upper column tube 202 is fixed by the guiding fit between the limiting groove 203 and the connecting shaft 204, and the conical locking head of the column connecting lock 206 engaging with the upper column tube 202. The support tube 207 has eight positioning holes 210, forming a transition fit with the positioning post 211, and with the precise guidance of the limiting rod 209 and the sliding groove 208, it achieves high repeatability.

[0037] The column connecting lock 206 includes a knob part, a threaded rod part and a conical locking head, and the conical locking head forms an interference fit with the groove on the outer wall of the upper column tube 202;

[0038] It adopts an integrated structure of knob, threaded rod and conical locking head. The knob surface is machined with anti-slip texture for easy operation by hand. The threaded rod uses precision fine thread to ensure transmission accuracy. The conical locking head forms a large-area fit with the groove inside the column tube through the bevel. The matching system adopts a precision interference design, which can generate strong radial clamping force under moderate locking torque, and can effectively resist various vibration interferences.

[0039] The positioning holes 210 of the support tube 207 are arranged at equal intervals, the center distance between adjacent positioning holes 210 is 100mm, and the hole diameter is 0.5mm to 1mm larger than the diameter of the positioning post 211.

[0040] The positioning holes 210 are arranged at equal intervals (center distance 100mm±0.1mm). With the addition of 8 positioning holes, precise height adjustment in 100mm increments is possible within the range of 900-2200mm, meeting the requirements of various competition standards. The diameter of the positioning holes 210 is 0.5-1mm larger than that of the positioning posts 211, forming a transition fit that ensures both smooth insertion and removal and accurate positioning.

[0041] The outer circumference of the tensioning wheel 213 is provided with anti-slip texture, and its axis is arranged perpendicular to the axis of the positioning bolt 212.

[0042] The outer circumference of the tensioning wheel 213 is decorated with a diamond-shaped anti-slip texture with a depth of 0.5mm, and the surface is sandblasted to increase the coefficient of friction of the rope and prevent the rope from slipping. The tensioning wheel 213 and the positioning bolt 212 adopt a vertically intersecting axis layout to form an efficient lever structure. This orthogonal arrangement can effectively amplify the tangential force applied by the operator and convert it into a larger rope pretension, thus achieving a labor-saving effect.

[0043] The cover plate 105 is rotatably connected to the main base housing 101 via a hinge, and the cover plate 105 can rotate relative to the main base housing 101 within the range of 0° to 180°; the main base housing 101 and the secondary base housing 107 are filled with counterweight material.

[0044] The rotatable cover 105, in conjunction with the modular counterweight chamber (main base housing 101 and auxiliary base housing 107), enables convenient counterweight adjustment, facilitating quick operation by a single person. At the same time, high-density cast iron material is scientifically distributed to optimize structural stability and lower the center of gravity of the equipment.

[0045] Working principle: Before using this portable air volleyball column, it is necessary to check the overall condition of the device to ensure it can function properly. Figure 1 - Figure 8 As shown, when it is necessary to move the volleyball post, the operator can do so in two ways:

[0046] Tilt drag mode: Pull up the handle 106 or support tube 207 at a 15°-20° angle. The bottom edge of the arc-shaped sheet metal 102 of the main base housing 101 does not contact the ground. At this time, the roller 103 becomes the main load-bearing component, realizing scratch-free movement.

[0047] Handling mode: The second handle 108 and the first handle 104 are symmetrically arranged and work together to maintain the balanced distribution of the counterweight material inside the base shell, thus avoiding impact loads caused by the shift of the center of gravity during handling.

[0048] Secondly, when the air volleyball column is in operation, the upper column tube 202 forms an axial sliding pair with the connecting shaft 204 in the lower column tube 201 through the limiting groove 203. When the column connecting lock 206 is rotated, its conical locking head makes an interference fit with the groove on the outer wall of the upper column tube 202 to achieve radial locking after stepless adjustment.

[0049] Meanwhile, the support tube 207 ensures linear movement through the sliding constraint of the limiting rod 209 and the slide groove 208. After the positioning pin 211 is inserted into the selected positioning hole 210, its clearance fit with the hole diameter (0.5-1mm) eliminates radial shaking, and the 100mm spacing between adjacent holes ensures the height adjustment accuracy.

[0050] Finally, the anti-slip texture of the tightening wheel 213 and the guide wheel 214 form a double-point fixation of the rope, which suppresses the axial vibration of the support tube 207 and improves the stability of the net installation.

[0051] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A portable volleyball column, comprising a base assembly (1) and a column assembly (2), characterized in that: The base assembly (1) includes a main base housing (101), an arc-shaped sheet metal (102) is fixedly connected to one side of the main base housing (101), and rollers (103) are rotatably connected to both ends of the main base housing (101) near the bottom of the arc-shaped sheet metal (102). A first carrying groove (104) is provided on the side of the main base housing (101) near the rollers (103). A cover plate (105) is rotatably connected to the top of the main base housing (101). A carrying handle (106) is fixedly connected to one end of the cover plate (105). A secondary base housing (107) is fixedly connected to the side of the main base housing (101) away from the arc-shaped sheet metal (102). A second carrying groove (108) is symmetrically provided on both sides of one end of the secondary base housing (107). The column assembly (2) includes a lower column tube (201) fixedly connected to the sub-base housing (107). An upper column tube (202) is sleeved inside the lower column tube (201). A limiting groove (203) is formed on one side of the bottom end of the upper column tube (202). A connecting shaft (204) fixedly connected to the inner wall of the lower column tube (201) is provided in the limiting groove (203). A nut (205) is fixedly connected to the other side of the lower column tube (201) relative to the limiting groove (203). A column connecting lock (206) is threaded through the lower column tube (201) and engaged with the upper column tube (202). A support tube (207) is sleeved inside the upper column tube (202). A groove (208) and eight longitudinally arranged positioning holes (210) are provided on one side of the tube (207). A limiting rod (209) fixed to the inner wall of the upper column tube (202) is slidably connected in the groove (208). A positioning bolt (212) coaxial with the positioning hole (210) is provided at the top of the upper column tube (202). A positioning post (211) assembled with the positioning hole (210) is threaded in the positioning bolt (212). A tightening wheel (213) is fixedly connected to the upper column tube (202) below the positioning bolt (212). A guide wheel (214) is rotatably connected to the top of the support tube (207). A support rod (215) with both ends fixed to the inner wall of the upper column tube (202) is attached to the bottom of the support tube (207).

2. A portable air hockey column according to claim 1, wherein: The central angle of the arc-shaped sheet metal (102) is 90° to 120°, and the bottom edge of the arc-shaped sheet metal (102) is flush with the outer surface of the main base housing (101).

3. A portable air hockey column according to claim 2, wherein: The column connecting lock (206) includes a knob part, a threaded rod part and a conical locking head, and the conical locking head forms an interference fit with the groove on the outer wall of the upper column tube (202).

4. The portable air hockey column of claim 1, wherein: The positioning holes (210) of the support tube (207) are arranged at equal intervals, the center distance between adjacent positioning holes (210) is 100mm, and the hole diameter is 0.5mm to 1mm larger than the diameter of the positioning post (211).

5. A portable air volleyball column according to claim 1, characterized in that: The outer periphery of the tightening wheel (213) is provided with anti-slip patterns, and its axis is perpendicularly arranged with respect to the axis of the positioning bolt (212).

6. A portable air hockey column according to claim 5, wherein: The cover plate (105) is rotatably connected to the main base housing (101) through a hinge, and the cover plate (105) can rotate relative to the main base housing (101) within a range of 0° to 180°.

7. The portable air hockey column of claim 5, wherein: The main base housing (101) and the auxiliary base housing (107) are filled with counterweight materials inside.

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