Quick-release and easy-to-open quad or tripod

Abstract

This invention discloses a tripod or quadripod that allows for rapid extension, positioning, and easy opening, belonging to the category of lifting support devices. It comprises at least three sets of telescopic tubes, each consisting of an outer tube, at least one inner tube section, at least one telescopic locking device, and a connecting sleeve. It also includes a main connector and a middle tube or middle telescopic tube. The connecting sleeve is hinged to the main connector and connects to the outer or inner tube. The main connector is sleeved on the middle tube, and a push-button is sleeved on the main connector or middle tube, with a pressing travel space between the push-button and the main connector. Compared to ordinary tripods, this invention not only eliminates the need for multiple unlocking and locking of the telescopic tubes when opening and retracting, without requiring bending over or worrying about the tripod tipping over, but also achieves rapid extension and automatic positioning of the telescopic tubes, rapid retraction and automatic limiting of the telescopic tubes, and, based on these features, provides a quadripod with higher stability on a plane than a traditional tripod. Simultaneously, it enhances the user experience.

Description

Technical Field

[0001] This invention pertains to lifting support devices, and more specifically, to a quadruped or tripod that allows for quick telescopic positioning and easy opening. Background Technology

[0002] Currently, almost all tripods on the market are equipped with several telescopic tubes (legs) for extension and retraction. They are characterized by their small size, portability, and ease of use, and are widely used in various fields, becoming an essential item for many. Common equipment supported by tripods includes: cameras, measuring instruments, webcams, projectors, monitors, astronomical telescopes, microphones, lighting equipment, audio equipment, and other objects requiring support for presentations and live streaming.

[0003] However, the tripods in the aforementioned existing products or technologies have some shortcomings or have long suffered from some serious drawbacks: 1. The telescopic tubes of the aforementioned tripods are almost all locked using threads, eccentric protrusions, or eccentric tubes, and some even use bolts. This structure leads to many inconveniences in operation. For example, users may need to bend over or squat repeatedly while operating the tripod, requiring one hand to hold it and the other to operate the locking or unlocking mechanism. If the user operates standing, they need one hand to hold the tripod, the other to lift a set of telescopic tubes, and then use that same hand to unlock or lock them. However, this could cause the lifted tubes to fall when released, or the tripod to tip over due to a shift in the center of gravity. This process severely impacts the user experience.

[0004] 2. Before extending the telescopic tubes of the tripod described above, each section and each group of telescopic tubes needs to be unlocked in advance before they can be extended.

[0005] 3. After the telescopic tube of the tripod is extended, each section and each group of telescopic tubes must be locked separately.

[0006] 4. When the above-mentioned extended telescopic tubes need to be retracted, it is necessary to unlock each section and each group of telescopic tubes separately, then retract the telescopic tubes and then lock them separately.

[0007] 5. The tripod angles described above are inconvenient to open, requiring each telescopic tube to be opened separately.

[0008] 6. Almost none of the tripods mentioned above can be opened to any angle simultaneously and quickly within the range of normal use.

[0009] 7. The telescopic tube locking mechanism of the tripod described above is prone to loosening. If even one section of the telescopic tube becomes loose, the tripod will become unstable and easily tip over, potentially damaging the equipment on it. Furthermore, the weight that the tripod can support is very limited.

[0010] 8. The tripods described above cannot be quickly and simultaneously locked in place after being folded up.

[0011] 9. The tripods mentioned above lack sufficient planar stability when opened and are prone to tilting in one direction during operation. Furthermore, for example, at press conferences, many reporters use tripod cameras. Due to limitations in space and the need for a frontal view, the tripods cannot be opened too wide, otherwise it would not only obstruct others but also reduce the perceived height. However, opening them too narrowly would compromise their stability.

[0012] Therefore, there is an urgent need to develop simpler structures, more convenient functions, and newer technologies to solve the aforementioned problems. To this end, after several months of dedicated research, I have finally solved some difficult problems, and even overcome several obstacles that presented contradictions in structure and space or whose underlying principles were difficult to establish, while still requiring simple and practical structures and functions. Summary of the Invention

[0013] The technical problem to be solved by the present invention is to provide a quadrupole or tripod that can be quickly extended and positioned and is easy to open, in order to overcome some of the shortcomings of the prior art.

[0014] The technical solution adopted by this invention to solve its technical problem is: A simple technique and structure are provided, comprising at least three sets of telescopic tubes, each consisting of an outer tube, at least one inner tube, at least one telescopic locking device, and a connecting sleeve. It also includes a main connector and a middle tube or a middle telescopic tube. The connecting sleeve is hinged to the main connector and connects to the outer tube or the inner tube. The main connector is sleeved onto the middle tube. A pusher is sleeved onto the main connector or the middle tube, and a pressing travel space is provided between the pusher and the main connector.

[0015] Furthermore, a protective glove is fitted over the outer tube, and the outer tube is fitted over the inner tube. The inner tube includes a lower inner tube and at least one upper inner tube. The upper inner tube is fitted over the outer tube, and the lower inner tube is fitted over the upper inner tube. The upper part of both the upper inner tube and the lower inner tube is provided with the telescopic locking device. The telescopic tube is in four or three sets.

[0016] Furthermore, locking holes are provided on both sides of the outer tube, and locking holes are provided on the bottom side of the tube wall of both the outer tube and the upper inner tube, or a rack-like infinitely telescopic rod is provided inside the outer tube and the inner tube. Locking holes A are symmetrically provided on the tube wall at the bottom of the locking holes. Each locking hole A contains several openings, external threads, and a locking sleeve with a conical bottom. A locking button with internal threads and a conical bottom is provided on the outside of the locking sleeve. The conical surface of the locking sleeve mates with the conical surface of the locking button. A positioning platform A is symmetrically provided on the outside of the locking sleeve. Positioning platform A is engaged in the locking hole A or the upper part of the clamping sleeve is pressed and fixed to the lower part of the outer tube. Locking holes B are symmetrically opened on the bottom wall of the lower inner tube. A threaded sleeve with an inner hole is provided at the bottom of the lower inner tube. Positioning platform B is symmetrically opened on the outside of the threaded sleeve. Positioning platform B is engaged in the locking hole B. A knob with a step and internal thread is provided at the bottom of the threaded sleeve. An adjustment knob is provided outside the threaded sleeve and the knob. A retractable foot is provided inside the threaded sleeve and the knob, or a detachable roller is provided at the bottom of the adjustment knob.

[0017] Further, the telescopic lock device includes lock body A, lock body B, U-shaped unlocking component A, U-shaped unlocking component B, lug, and elastic element. Lock body A and U-shaped unlocking component A are disposed within the lower inner tube, and lock body B and U-shaped unlocking component B are disposed within the upper inner tube. A stepped section is provided at the lower part of lock body A38 and lock body B39. The bodies of lock body A38 and lock body B39 cooperate with the inner walls of the outer tube and the inner tube, respectively. The tube body at one end of the inner tube... Two symmetrical latches are provided and fitted onto the stepped body. Each latch has a C-shaped ring with a protrusion that engages within the latch. Openings are symmetrically provided on both sides of the lower part of lock bodies A38 and B39. A stepped recess with two concave holes and two guide grooves is provided on the front of lock bodies A38 and B39. A retaining edge is provided on the upper side of lock body A38. A groove is provided on the bottom surface of lock bodies A38 and B39. The middle and sides of lock bodies A38 and B39... Both edges are provided with through holes, and symmetrical limit openings are provided on both sides of the central through hole. Both U-shaped unlocking components A and B have a set of inclined blocks on both sides, or two sets of inclined blocks symmetrically provided on both sides. Buckles are provided on the outer sides of the top and bottom of both sides of U-shaped unlocking components A and B. The upper part of U-shaped unlocking component A has a threaded hole and a protrusion with a notch on one adjacent side. A threaded iron rod or strip is installed in the threaded hole. The U-shaped unlocking component B… The upper part has a through hole, the lower part of the ear tongue is a cylinder, the middle part of the ear tongue is a U-shaped opening, the two sides of the ear tongue have symmetrically opened countersunk ears, the two sides of the U-shaped opening have at least one set of inclined surfaces or the upper and lower surfaces have at least one set of inclined surfaces symmetrically opened, the bottom edge of the U-shaped opening has symmetrically opened guide blocks, the U-shaped unlocking component A is inserted into the limiting opening, the ear tongue is placed in the stepped recess and the guide block cooperates with the guide groove, and elastic elements are provided between the two recesses and the ear tongue.

[0018] Furthermore, a sleeve is installed inside the outer tube. Positioning platforms C are formed on both sides of the sleeve, which mate with the locking holes. A guide hole is formed at the upper part of the sleeve, and an opening is formed at the lower part of the guide hole. A limiting hole and a through-hole are formed on one side of the opening. A shifting member is hinged within the limiting hole and the through-hole. A guide opening is formed at one end of the shifting member. A notch or slot is formed at the lower part of the through-hole. A permanent magnet or electromagnet is installed in the notch. A notch is formed on the other side of the opening, and stepped catches are formed on both sides of the notch. A guide hole is provided within the guide hole. The device has a pressing member with one end shaped like an opening and the other end cylindrical, passing through the opening-shaped middle. One side of the pressing member has symmetrically arranged buckles that cooperate with the step clip. The other side of the pressing member has a guide opening. A pull wire is arranged in the guide opening and inside the guide opening. One end of the pull wire is fixed with a fixing head that presses against the upper part of the guide opening. The other end of the pull wire is inside the upper inner tube and passes through the lock body B with a through hole, connecting to the protrusion with a notch. The bottom of the pressing member has a positioning hole. After the lower inner tube drives the iron rod to retract into place, it passes into the positioning hole.

[0019] Furthermore, the connecting sleeve has a shaft hole or an eccentric shaft hole on its side, a cut on its top, and cut surfaces on both the inner and outer sides of the cut. An ear is provided on the inner side of the outer periphery of the connecting sleeve, and a screw hole is provided on the side of the ear. A screw is installed in the screw hole. The connecting sleeve is connected to the outer tube or the inner tube by screws or by point pressing.

[0020] Furthermore, four or three connecting ears with connecting holes are symmetrically opened on the lower part of the outer periphery of the main connector. The connecting ears are inserted into the cut. The upper part of the connecting ears is opened with a stepped pressing hole. An elastic element is provided in the pressing hole. The pressing hole is aligned with the guide hole. At least three pressing heads are evenly distributed on the lower or side of the outer periphery of the press. The lower part of the pressing head is a stepped cylinder that passes through the pressing hole and is flush with the bottom surface of the connecting ear under the action of the elastic element. The eccentric shaft hole is hinged to the connecting hole by bolts or rivets respectively.

[0021] Furthermore, each of the outer periphery of the push-button has four or three symmetrically arranged push-button ears that appear petal-shaped when viewed from above. Each of the outer periphery of the main connector has four or three stepped ear seats that appear petal-shaped when viewed from above, which cooperate with the push-button ears. A locking button with at least three locking heads or a locking sleeve with at least three clockwise rotating heads of decreasing size is provided between the main connector and the central tube. The locking sleeve has at least two U-shaped openings on its upper surface, and a locking button that engages with each other is provided on the upper surface of the U-shaped openings. At least two locking strips are provided on the upper surface of the main connector. The ear seats cooperate with the locking heads. The bottom of the outer periphery of the locking button presses against the upper surface of the inner periphery of the push-button. A locking button with at least two inclined surfaces is provided on the upper surface of the locking button, and at least three locking tabs are provided below the locking button. The locking bar engages with the inner circumference of the main connector, and the locking strip cooperates with the inclined surface to lock the middle tube. The middle tube has a clamping sleeve with several openings and threads that is engaged or pressed onto its upper surface. The locking button has a locking handle that cooperates with the clamping sleeve to lock the middle telescopic tube. The middle telescopic tube includes the middle tube. The locking handle has a connecting button connected to the middle telescopic tube. The connecting button has an internal thread, and a connector A is connected to the internal thread. One end of connector A has a 3 / 8-inch diameter external thread, and the other end has external threads of 3 / 8 and 1 / 4 inches in diameter. The connecting button has a locking handle with a stepped recess and a 3 / 8-inch diameter internal thread that fits onto it. The locking handle can lock or unlock connector A, and a rubber pad is fixed to the top of the locking handle.

[0022] Furthermore, a connecting seat and a connecting cover are provided below the middle tube. The connecting seat or the connecting cover is pressed and fixed to the bottom of the middle tube. The connecting seat and the connecting cover are connected by at least one screw. A threaded hole is opened in the middle of the connecting seat and the connecting cover. A connector B is provided in the threaded hole. The connector B can be connected to a gimbal or a single-leg telescopic rod. Four or three openings are symmetrically opened on the outer periphery of the middle tube, the connecting seat, and the connecting cover. Four or three bearing seats are opened at the joint of the connecting seat and the connecting cover. A hinged locking ring is provided in the middle or upper middle part of the outer tube, or a connecting block with a hole is fixed on the outer side of the outer tube. The hinged part of the locking ring or the connecting block is respectively connected to four or three openings and four or three bearing seats. Four or three interconnected and rotatable connecting rods are provided in the four or three openings and four or three bearing seats. When the middle tube or the telescopic tube moves up and down, it can link four or three connecting rods and drive four or three sets of telescopic tubes to open outwards or retract inwards simultaneously.

[0023] Furthermore, a cavity is provided on the outer periphery of the main connector, and a conversion component is provided inside the cavity. The conversion component is connected to a pull cord that can control the tongue or the unlocking component.

[0024] The beneficial effects of this invention are mainly manifested in the following aspects: 1. This invention not only solves the long-standing problem of needing a tripod that is simple in structure and quick and easy to use, but also allows people to open and retract the telescopic tube without bending over or squatting, eliminating concerns about the tripod potentially falling over and improving the user experience.

[0025] 2. The telescopic tubes of the quadruped or tripod of this invention extend quickly and automatically position themselves (eliminating the need to unlock and lock each section or group of telescopic tubes in advance): The telescopic tubes of this invention are in four or three groups. Each group of telescopic tubes uses a pressing element to press against the iron rod below the pressing element (the iron rod is separated from the permanent magnet). After each group of telescopic tubes descends into place using part of the pressing force and the gravity of the telescopic tube below, the lugs of each telescopic locking device in each group extend out under the action of the elastic element and automatically position themselves with the locking holes of the outer and inner tubes.

[0026] 3. The telescopic tube of the quadruped or tripod of this invention retracts quickly and automatically stops (eliminating the need for pre-unlocking and individual locking of each section or group of telescopic tubes): The telescopic tube of this invention includes a telescopic locking device on the upper part of the lower inner tube and at least one upper inner tube in each group. By using a pusher to drive the shifting member and the pull line, the lug of the telescopic locking device of the lower inner tube in each group is laterally retracted to unlock. At this time, the pressing main connector uses the reaction force of the ground to retract the lower inner tube upward. At the same time, the telescopic locking device of the lower inner tube presses against the telescopic locking device of the upper inner tube, forcing the lug of the telescopic locking device to retract laterally to unlock. If multiple telescopic tubes repeat the process of the telescopic locking devices pressing against each other, each group of telescopic tubes can be retracted simultaneously. During this process, the iron rod on the U-shaped unlocking member A of the lower inner tube (the iron rod is attracted to the permanent magnet) retracts into the positioning hole and is attracted to the magnet on it to automatically limit the position.

[0027] 4. The tripod or quadruped of this invention is very easy to open. Simply pull out or partially pull out the locking handle on the center tube to activate the four or three connecting rods pivotally connected to one end of the center tube, and the other end of the connecting rods is hinged to the outer tube. This allows the angles of the four or three sets of telescopic tubes to be opened simultaneously and quickly. Furthermore, the locking handle can be pulled out to extend the locking mechanism or pulled out independently to increase the tripod height. The center tube and the telescopic tube can also be locked separately, and the locking disc on the telescopic tube can be loosened to disassemble and replace the 3 / 8" (for connecting the tripod head) or 1 / 4" (for connecting the camera) connector. Additionally, there is a connector for connecting the tripod head or the single-leg telescopic tube at the bottom of the center tube.

[0028] 5. The tripod or quadripod of the present invention can be opened simultaneously and quickly to any angle within the normal range of use. The angle of opening of each telescopic tube can be controlled by pulling out the locking handle more or less.

[0029] 6. The telescopic tubes of each section and group of the quadruped or tripod of the present invention are positioned by lugs and locking holes, so they will not loosen or tip over, and the weight of the supported equipment will be greatly increased.

[0030] 7. The tripod or quadripod of the present invention can be quickly and synchronously locked after being folded up. Simply rotate the locking button clockwise by a certain angle to lock it.

[0031] 8. This invention utilizes a quadruped instead of a traditional tripod, solving some of the problems faced by tripods in various application scenarios. For example, at a press conference, a quadruped can open to a smaller angle and reach a higher position than a traditional tripod, while also minimizing disruption to others.

[0032] 9. The principle, structure, and stability of this invention significantly improve upon traditional tripods. Traditional tripods, in an effort to enhance stability, almost always employ extended tripods. However, extension only provides a limited increase in stability; further extension inevitably leads to tipping over between the two telescopic tubes in one direction during operation, and also increases the space occupied. Furthermore, space is divided into four directions (front, back, left, and right), while a tripod only has three, with only one telescopic tube serving as a fulcrum in each direction. A quadruped, on the other hand, has two fulcrums in each direction (one of which is a common point). Additionally, the distance from the midpoint of the straight line between two telescopic tubes to the center of each tube's circle demonstrates that the more telescopic tubes and the longer this distance, the higher the stability. While tripods offer high stability on uneven ground, quadrupeds are significantly more stable on a single plane. Moreover, numerous examples illustrate this, such as why chairs and stools have four legs instead of three. For example, trees recently transplanted along roadsides were previously secured with tripods to prevent them from being blown down by strong winds, but now, at the expense of increased costs, quadrupeds are used for support. Furthermore, quadrupeds, like tripods, allow adjustment of the feet on a telescopic tube and the length of the inner tube by loosening the locking knob, making them suitable for various uneven terrains. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the tripod of the present invention in its folded state; Figure 2 A three-dimensional structural diagram of the four-legged tripod with its telescopic tube extending outwards, according to the present invention; Figure 3 A three-dimensional structural diagram of the present invention showing how the locking handle of any part of the tripod can be pulled out to open the tripod at a synchronous angle. Figure 4 A three-dimensional structural diagram of the present invention showing how the four-legged tripod opens synchronously at an angle when the telescopic tube is pushed out and the locking handle is pulled out. Figure 5 This is a three-dimensional structural diagram of the present invention, showing how the four-legged tripod can be opened synchronously at different angles by pressing out the telescopic tube and pulling out the locking handle to bring out the telescopic feet. Figure 6 A three-dimensional structural diagram of the present invention showing how the four-legged tripod opens synchronously at an angle when the telescopic tube is pushed out and the locking handle is pulled out. Figure 7 A three-dimensional structural diagram of the present invention showing how the quadrupole opens synchronously at an angle by extending the telescopic tube and pulling out a portion of the locking handle. Figure 8 This is an exploded three-dimensional view of the tripod of the present invention, excluding the telescopic tube; Figure 9 This is an exploded three-dimensional structural diagram of a set of telescopic tubes of the present invention; Figure 10 This is a mid-section view of the internal structure of a set of telescopic tubes after retraction according to the present invention. Figure 11 This is a side cross-sectional view of the internal structure of a set of telescopic tubes after they have been pressed out according to the present invention; Figure 12 This is a three-dimensional structural diagram of the tripod of the present invention in its folded state.

[0034] The numbers on the map are: 6. Outer tube; 8. Telescopic lock device; 9. Connecting sleeve; 11. Main connector; 13. Middle tube; 16. Middle telescopic tube; 17. Button; 18. Lower inner tube; 19. Upper inner tube; 21. Locking hole; 22. Locking hole; 23. Locking hole A; 25. Clamping sleeve; 26. Locking button; 27. Positioning platform A; 28. Locking hole B; 29. ​​Threaded sleeve; 32. Positioning platform B; 33. Knob; 36. Adjusting knob 37. Foot nail; 38. Lock body A; 39. Lock body B; 58. U-shaped unlocking component A; 61. U-shaped unlocking component B; 62. Lug; 63. Boss; 66. C-ring; 68. Guide groove; 69. Step recess; 73. Edge retainer; 77. Limiting port; 78. Angled block; 79. Protrusion; 82. Iron bar; 83. Lug; 86. Guide block; 87. Sleeve fitting; 88. Positioning platform C; 89. Guide hole; 91. Limiting hole; 92. Through port; 93. Transposition component; 96. Guide port; 97. Permanent magnet; 98. Step clip; 99. Pressing component; 111. Guide port; 113. Pull wire; 116. Positioning hole; 117. Eccentric shaft hole; 118. Cutout; 220. Cut surface; 221. Ear seat; 222. Connecting hole; 223. Connecting ear; 226. Pressing hole; 227. Pressing head; 228. Button. Ear; 229, Stepped Ear Seat; 333, Locking Head; 336, Locking Button; 337, Locking Strip; 338, Locking Button; 339, Pressing Sleeve; 666, Lock Handle; 667, Connecting Button; 668, Connecting Head A; 669, Stepped Recessed Hole; 777, Lock Handle; 778, Connecting Seat; 779, Connecting Cover; 886, Connecting Head B; 888, Shaft Seat; 889, Locking Ring; 999, Connecting Rod. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] It should be noted that, based on the above description of the present invention, any modifications, substitutions, or alterations made using ordinary technical knowledge and conventional methods in the field without departing from the basic technical concept of the present invention shall fall within the scope of protection of the present invention.

[0037] It should also be noted that in the description of this invention, terms such as "upper", "lower", "left", "right", "front", "rear", "inner", and "outer" 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 invention 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 limiting this invention.

[0038] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other or have other structures.

[0039] The preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0040] Example 1: (Four-legged structure) Combination Figures 1-11 As shown, taking a quadruped as an example: it includes an outer tube 6, an inner tube, a telescopic locking device 8, and a connecting sleeve 9; the outer tube 6 is covered with a protective sleeve, and the outer tube 6 is connected to the inner tube. The outer tube 6 is also the thickest tube on top. The inner tube includes a lower inner tube 18 and an upper inner tube 19. The upper inner tube 19 is connected to the inside of the outer tube 6, and the lower inner tube 18 is connected to the inside of the upper inner tube 19. The upper part of the upper inner tube 19 and the lower inner tube 18 are both equipped with telescopic locking devices 8. The connecting sleeve 9 is connected to the upper end of the outer tube 6, and they form four sets of three-section telescopic tubes respectively; it also includes a main connector 11 and a middle telescopic tube 16. The connecting sleeve 9 is hinged to the main connector 11. The main connector 11 is connected to the middle tube 13. The main connector 11 is fitted with a pressing piece 17. There is a pressing stroke space of about 5 mm between the pressing piece 17 and the main connector 11.

[0041] Combination Figure 5 , Figures 9-11As shown, the telescopic lock device 8 further includes a lock body A38, a lock body B39, a U-shaped unlocking component A58, a U-shaped unlocking component B61, a lug 62, and an elastic element. The lock body A38 and the U-shaped unlocking component A58 are disposed within the lower inner tube 18, and the lock body B39 and the U-shaped unlocking component B61 are disposed within the upper inner tube 19. A step is provided at the lower part of the lock body A38 and the lock body B39. 38. The body of lock body B39 is fitted with the inner wall of outer tube 6 and the inner wall of inner tube, so that lock body B39 of upper inner tube 19 can slide up and down in outer tube 6; two symmetrical slots are opened on one end of the inner tube and are fitted onto the step body. The two slots are provided with C-shaped rings 66 with protrusions 63 and are locked in the slots. This is very convenient to install. Just insert the inner tube with two slots at one end into the step body, and then lock the C-shaped rings 66 into the slots to fix the inner tube to lock body A38 or lock body B39. The lower parts of lock bodies A38 and B39 have symmetrical openings on both sides. The front of lock bodies A38 and B39 has stepped recesses 69 with two concave holes and two guide grooves 68. The upper side of lock body A38 has a retaining edge 73. The bottom surface of lock bodies A38 and B39 has a groove. The middle and edge parts of lock bodies A38 and B39 have through holes. The two sides of the middle through hole have symmetrical limit openings 77. Both sides of the U-shaped unlocking parts A58 and B61 are provided with a set of inclined blocks 78. The upper and lower outer sides of both sides of the U-shaped unlocking parts A58 and B61 are provided with buckles. The upper part of the U-shaped unlocking part A58 is provided with a threaded hole and a protrusion 79 with a notch on one side. A threaded iron rod 82 is provided in the threaded hole. The upper part of the U-shaped unlocking part B61 is provided with a through hole. The lower part of the lug 62 is cylindrical. The middle part of the lug 62 is U-shaped. The two sides of the lug 62 are symmetrically provided with countersunk lugs 83. At least one set of inclined surfaces is provided on both sides of the U-shaped opening. The bottom edge of the U-shaped opening is symmetrically provided with guide blocks 86. The U-shaped unlocking part A58 is inserted into the limiting opening 77. The lug 62 is placed in the stepped recess 69 and the guide blocks 86 cooperate with the guide groove 68. Elastic elements are provided between the two recesses and the lug 62. During installation, first place the two elastic elements in the two recessed holes, then align the guide block 86 of the lug 62 with the guide groove 68 in the stepped recess 69, place and press it down. Since the two elastic elements are limited in the two recessed holes and the countersunk hole of the lug 83 respectively and have a certain compression space, then insert the U-shaped unlocking part A58 into the limiting port 77. Since a set of inclined blocks 78 of the U-shaped unlocking part A58 cooperates with a set of inclined surfaces of the lug 62 and under the action of the two elastic elements, it can be limited after releasing. In addition, elastic elements can be installed on the two buckles at the bottom of the U-shaped unlocking part A58. Pressing or pulling back the U-shaped unlocking part A58 can control the lateral movement of the lug 62.

[0042] Furthermore, locking holes 21 are provided on both sides of the outer tube 6, and locking holes 22 are provided on the bottom side of the tube wall of both the outer tube 6 and the upper inner tube 19. Locking holes A23 are symmetrically provided on the tube wall at the bottom of the locking holes 22. The locking holes A23 are provided with several openings, external threads, and a locking sleeve 25 with a conical bottom. A locking button 26 with internal threads and a conical bottom is provided on the outside of the locking sleeve 25. The conical surface of the locking sleeve 25 and the conical surface of the locking button 26 are engaged. The use of two conical surfaces engaged and the locking sleeve 25 and the inner tube being locked face to face can appropriately improve the locking ability. A positioning platform A27 is symmetrically provided on the outer side of the clamping sleeve 25. The positioning platform A27 is engaged in the locking hole A23. A locking hole B28 is symmetrically provided on the bottom wall of the lower inner tube 18. A threaded sleeve 29 with an inner hole is provided at the bottom of the lower inner tube 18. A positioning platform B32 is symmetrically provided on the outer side of the threaded sleeve 29. The positioning platform B32 is engaged in the locking hole B28. A knob 33 with a step and internal thread is provided at the bottom of the threaded sleeve 29. A rubber sleeve can be fixed on the outer periphery of the knob 33. An adjusting knob 36 is provided on the outside of the threaded sleeve 29 and the knob 33. A retractable foot 37 is provided inside the threaded sleeve 29 and the knob 33, or a detachable roller is provided at the bottom of the adjusting knob 36. This structure allows for convenient adjustment of the retractable foot 37 in its original position, and it is also aesthetically pleasing. The detachable roller, including a caster wheel, at the bottom of the adjusting knob 36 is for easy movement or replacement of the retractable foot 37.

[0043] A sleeve fitting 87 is installed inside the outer tube 6. Positioning platforms C88 are provided on both sides of the sleeve fitting 87, and the positioning platforms C88 cooperate with the locking holes 21. A guide hole 89 is provided at the upper part of the sleeve fitting 87, and an opening is provided at the lower part of the guide hole 89. A limiting hole 91 and a through hole 92 are provided on one side of the opening. A shifting component 93 is hinged within the limiting hole 91 and the through hole 92. A guide opening 96 is provided at one end of the shifting component 93. A recess is provided at the lower part of the through hole 92, and a permanent magnet 97 is installed within the recess. A notch is provided on the other side of the opening, and stepped catches 98 are provided on both sides of the notch. A component with an open end is provided within the guide hole 89. The pressing part 99 has a cylindrical end that passes through the mouth-shaped middle part. One side of the pressing part 99 has a buckle that cooperates with the step buckle 98. The other side of the pressing part 99 has a guide opening 111. A pull wire 113 is installed in the guide opening 96 and the guide opening 111. One end of the pull wire 113 is fixed with a fixing head that presses against the upper part of the guide opening 111. The other end of the pull wire 113 is inside the upper inner tube 19 and passes through the lock body B39 with a through hole and connects to the protrusion 79 with a notch. The bottom of the pressing part 99 has a positioning hole 116. After the lower inner tube 18 drives the iron rod 82 to retract into place, it passes into the positioning hole 116.

[0044] Combination Figures 1-8As shown, further, four connecting ears 223 with connecting holes 222 are symmetrically provided on the lower part of the outer periphery of the main connector 11. The connecting ears 223 are inserted into the cutout 118. Each connecting ear 223 has a stepped pressing hole 226 on its upper part. An elastic element is provided in the pressing hole 226. The pressing hole 226 is aligned with the guide hole 89. At least three pressing heads 227 are evenly distributed on the lower part of the outer periphery of the press member 17. The lower part of the pressing head 227 is a stepped cylinder that passes through the pressing hole 226 and is flush with the bottom surface of the connecting ear 223 under the action of the elastic element. The eccentric shaft hole 117 is hinged to the connecting hole 222 by bolts. The purpose of the flush bottom surface of the connecting ear 223 is to allow the telescopic tube to be opened at an angle. When the telescopic tube returns to its original position, pressing the press member 17 causes the cylinder under the pressing head 227 to pass through the pressing hole 226. The bottom surface of the cylinder is rounded.

[0045] Furthermore, the connecting sleeve 9 has an eccentric shaft hole 117 on its side and a cut 118 on its top. The inner and outer sides of the cut 118 have cut surfaces 220. The inner side of the outer periphery of the connecting sleeve 9 has an ear seat 221. The side of the ear seat 221 has a screw hole, and a screw is installed in the screw hole. The connecting sleeve 9 and the outer tube 6 are connected by screws. When the connecting sleeve 9, which is the telescopic tube, is folded, the inner cut surface 220 presses against the side of the connecting ear 223 to limit its position. The outer cut surface 220 can have a logo or be printed on it.

[0046] The principle and structure of the telescopic tube's rapid extension and automatic positioning: By pressing the button ear 228, the pressing heads 227 of the four sets of telescopic tubes below the button ear 228 are driven to press against the pressing parts 99, forcibly moving and separating the iron rod 82 that has been attracted to the permanent magnet 97 in the positioning hole 116 below each set of pressing parts 99. Then, by using part of the pressing force and the gravity of the telescopic tubes below, each set of telescopic tubes is lowered into place. At this time, the lugs 62 of each telescopic locking device 8 are extended under the action of the elastic element and automatically positioned with the lock hole 22 of the outer tube 6 and the inner tube.

[0047] The principle and structure of the telescopic tube's rapid retraction and automatic limiting: By pressing the latch 228, the four sets of telescopic tubes below the latch 228 simultaneously drive the pressing heads 227 to press against the pressing parts 99. At the same time, the cylindrical parts below each pressing part 99 press against the hinged shifting parts 93 inside the sleeve 87, causing one end of the shifting parts 93 to lift upwards and drive the pull cable 113 to pull back the U-shaped unlocking part A58 inside the lower inner tube 18, forcing the lug 62 to retract laterally and unlock. Then, by pressing against the main connector 11 and using the reaction force from the ground, each set of lower inner tubes 18 retracts upwards. At this time, the pull cable 113 basically remains in its original position until the bottom of the retracted lower inner tube 18 is sealed, and one end of the pull cable 113 is pressed against, forcing the lower section of the pull cable 113 to bend in the lower inner tube. Inside the cavity of 18, the pull wire 113 is a thin steel wire rope or steel wire. At the same time, the U-shaped unlocking piece A58 of the lower inner tube 18 presses against the U-shaped unlocking piece B61 of the upper inner tube 19, forcing the lug 62 of the telescopic lock device 8 to retract laterally to unlock. If multiple telescopic tubes are used, the upper inner tube can be replaced with a first inner tube, a second inner tube, etc., and the process of mutual pressing of the telescopic lock device 8 can be repeated in the same way, so that each set of telescopic tubes can retract at the same time. During this process, the iron rod 82 fixed on the U-shaped unlocking piece A58 inside the lower inner tube 18 retracts into place, and the iron rod 82 enters the positioning hole 116 and attracts each other with the permanent magnet 97 on it. That is, the lower inner tube 18 is attracted to the sleeve piece 87 and automatically limited.

[0048] Furthermore, four petal-shaped hook ears 228 are symmetrically provided on the outer periphery of the hook 17. Four petal-shaped stepped ear seats 229 are provided between the outer periphery of the main connector 11 and the connecting ear 223 to cooperate with the hook ears 228. A locking button 336 with four locking heads 333 is provided between the main connector 11 and the middle tube 13. When folded, the locking button 336 rotates clockwise, utilizing the four locking heads 333 and the four ear seats 221. The locking surfaces of the locking heads 333 and ear seats 221 are beveled and tighten as the lock is tightened, thus ensuring a tight fit between the four telescopic tubes. This design also facilitates horizontal handling of the four-legged tripod with two telescopic tubes.

[0049] At least two locking strips 337 are provided on the top of the main connector 11. The ear seat 221 cooperates with the locking head 333. The bottom of the outer periphery of the locking button 336 presses against the top of the inner periphery of the button 17. This mutual pressing eliminates the need for further limiting and ensures the limiting of the button 17 and the main connector 11 when pressed back. When the button ear 228 moves downward, the outer side and bottom surface of the stepped ear seat 229 are limited. When the button ear 228 moves upward, it is limited by the button 17. When the button ear 228 is pressed, the elastic element in the four pressing holes 226 cooperates with the four pressing heads 227 to compress and return.

[0050] The locking button 336 has a locking button 338 with at least two beveled surfaces on its inner circumference. Below the locking button 338 are at least three latches that engage with the inner circumference of the main connector 11. Two locking strips 337 cooperate with the two beveled surfaces. A slight clockwise rotation of the locking button 338 locks the middle tube 13, and a slight counter-clockwise rotation unlocks it. The middle tube 13 has a clamping sleeve 339 with several openings and threads that is either snapped or pressed onto its upper surface. The locking button 338... The upper part is provided with a locking handle 666 that cooperates with the clamping sleeve 339 to lock the middle telescopic tube 16. The middle telescopic tube 16 includes a middle tube 13. The bottom of the clamping sleeve 339 and the locking handle 666 are conical. The conical surface of the clamping sleeve 339 cooperates with the conical surface of the locking handle 666. The two conical surfaces cooperate and the clamping sleeve 339 and the inner tube are face to face to lock. The middle telescopic tube 16 can be locked by turning the locking handle 666 slightly clockwise and unlocked by turning the locking handle 666 slightly counterclockwise.

[0051] The top of the locking handle 666 is provided with a connecting button 667 that connects to the telescopic tube 16. The connecting button 667 has an internal thread, which connects to the connector A668. One end of the connector A668 has an external thread with a diameter of 3 / 8 inch, and the other end of the connector A668 has external threads with diameters of 3 / 8 and 1 / 4 inch. The top of the connecting button 667 is provided with a locking handle 777 that fits into a stepped recess 669 and an internal thread with a diameter of 3 / 8. The locking handle 777 can lock the connector A. In other words, one end of connector A668 (3 / 8" and 1 / 4" inch) connects to connector button 667. Then, tighten connector A668 by turning locking handle 777 clockwise. The other end of connector A668, with a 3 / 8" thread, can be connected to the gimbal. Conversely, locking handle 777 can be turned counterclockwise to remove connector A668 and replace it. Then, tighten locking handle 777 counterclockwise. After replacement, the 1 / 4" connector A668 can be connected to the camera. A protective rubber pad is fixed to the top of locking handle 777 to protect the connecting device.

[0052] Furthermore, a connecting seat 778 and a connecting cover 779 are provided below the middle tube 13. The connecting seat 778 is fixedly connected to the lower part of the middle tube 13 by point pressing. The connecting seat 778 and the connecting cover 779 are connected by at least one screw. A threaded hole is opened in the middle of the connecting seat 778 and the connecting cover 779. A connector B886 is provided in the threaded hole. The connector B886 can be connected to the gimbal. Four connecting seats 778 and 779 are symmetrically opened on the outer periphery of the middle tube 13, the connecting seat 778 and the connecting cover 779. Four connecting parts are opened at the joint of the connecting seat 778 and the connecting cover 779. A hinged locking ring 889 is provided in the upper middle part of the outer tube 6. The hinged part of the locking ring 889 is connected to four openings and four rotatable connecting rods 999 that are connected to each other in four shaft seats 888. When the middle telescopic tube 16 moves up and down, it can link the four connecting rods 999 and drive the four sets of telescopic tubes to open outwards and retract inwards simultaneously.

[0053] The principle and structure of four sets of telescopic tubes opening simultaneously at any angle: By pulling out the locking handle 666 or the locking head handle 777, the middle tube 13 is driven. At the same time, the four-link rod 999, which is axially connected to one end of the middle tube 13, also moves upward. Simultaneously, the connecting sleeve 9, which is positioned and hinged at the upper part of each group of outer tubes 6, and the four-link rod 999, which is hinged to the locking ring 889 at the other end, also open outward at the same angle. Depending on how much the middle tube 13 is pulled out, the opening angle of each group of outer tubes 6 can be controlled within the normal operating range.

[0054] Example 2: (Tripod Structure) The principles are basically the same; the structural differences between tripods and quadrupeds are not significant. Figure 12 As shown, based on Example 1, all quadrupole-related items are replaced with tripod-related items. Everything else is basically the same as in Example 1, and will not be repeated here.

[0055] Example 3: (Another structure for a quadruped and tripod telescopic tube) Based on Embodiment 1, the following modifications are made: the connecting sleeve 9 connects to the inner tube, i.e., the thinnest tube is on top; the pull wire 113 is replaced with a pressing iron wire or carbon fiber rod that directly presses against the telescopic lock device 8. This structure is simpler. Other aspects are basically the same as in Embodiment 1 and will not be described again here.

[0056] Example 4: (Another structure for the quadrupole and tripod cable 113) Based on embodiment 1, the following modifications are made: a cavity is provided on the outer periphery of the main connector 11, and a conversion component is provided in the cavity. The conversion component is connected to a pull rope or pull line 113 that can control the latch 62 or the unlocking component. That is, pressing the button 17 will drive the conversion component and the pull line 113 to retract the latch 62 of the telescopic lock device 8 to unlock it. In addition, since the pull line 113 can be bent, the telescopic tube can also be opened at an angle.

[0057] Example 5: (Another structure of the telescopic locking device 8 for the telescopic tubes of quadrupeds and tripods) Based on Embodiment 1, the following modifications are made: each set of outer tube 6 and inner tube does not require a lock hole 22. The inner tube has a rack on its inner side, and the end of the lug 62 has at least one tooth groove that engages with the rack. During operation, the button 17 must be pressed continuously until the desired position is reached, at which point the button can be released for positioning. Other aspects are basically the same as in Embodiment 1 and will not be described in detail here.

[0058] Example 6: Using a quadruped on uneven ground: Combination Figure 5As shown, the quadrupole of the present invention can also be adjusted like a tripod by adjusting the telescopic feet 37 under a certain set of telescopic tubes and loosening the locking button 26 under the outer tube 6. The length of the inner tube of the telescopic tube can be adjusted as needed, and then the locking button 26 can be tightened to make the quadrupole suitable for various uneven ground.

[0059] The functions and operation process of the preferred embodiments of the present invention are as follows; 1. The tripod telescopic tube can be opened to any angle: Combination Figure 3 As shown, the self-locking folding mechanism can be rotated to open the lock button 336. Pulling out the lock head handle 777 will drive the lock handle 666, or pulling out the lock handle 666 at any point will open the four sets of telescopic tubes simultaneously at the same angle.

[0060] 2. Automatic extension and positioning of the tripod telescopic tube: Combination Figure 2 As shown, hold the petal-shaped stepped ear base 229 with both hands, press the petal-shaped button ear 228 symmetrically with your thumbs, and lift the quadruped at the same time. Use part of the pressure and the weight of the telescopic tubes to lower each telescopic tube into place.

[0061] 3. Automatic extension, positioning, and angle opening of the tripod telescopic tubes: Combination Figure 4 As shown, the self-locking folding lock button 336 can be rotated to open. Based on the above 2, pulling out the lock head handle 777 to drive the lock handle 666 or pulling out the lock handle 666 at any time will open the four sets of telescopic tubes at the same angle simultaneously.

[0062] 4. The tripod telescopic tubes, once extended or at an open angle, quickly retract and automatically stop: Combination Figure 1 As shown, first, tilt the quadruped with one hand and lift the two telescopic tubes or lift the quadruped. With the other hand, press down the locking handle 777 to drive the locking handle 666 or press down the locking handle 666 to fold the telescopic tubes at an angle. Then, press the petal-shaped button ears 228 symmetrically with both thumbs. At the same time, press down on the main connector 11 and use the reaction force of the ground to make each set of telescopic tubes retract upwards into place, which will automatically limit the position.

[0063] 5. Folding down the tripod: (1) If each set of telescopic tubes does not extend, combine Figure 1 As shown, pressing down the lock head 777 can drive the lock handle 666, or pressing down the lock handle 666 can cause each set of telescopic tubes to fold simultaneously; after folding, the lock button 336 can also be rotated to lock the four sets of telescopic tubes synchronously.

[0064] (2) If each telescopic tube has been extended and the angle has been opened, the specific operation is as described in 4 above.

[0065] 6. Tripod opening and folding: This operation process is not much different from that of a quadrupole, combined with Figure 12 The functions and operations described in the above embodiments allow for the simultaneous opening of each telescopic tube by directly pulling out the lock handle 777 or the lock handle 666; the three petal-shaped pusher ears 228 can be used to press two pusher ears 228 or symmetrically press the pusher 17, as well as some of the operations described above. Further details are omitted here.

[0066] It should be noted that during the operation of the above embodiments, if the locking handle 666 and the locking head handle 777 need to be pulled out or partially pulled out, the locking button 338 can be used to lock the middle tube 13 and the locking handle 666 can be used to lock the middle telescopic tube 16. Conversely, the operation is reversed when retracting. Under normal circumstances, it is not necessary to pull out the middle telescopic tube 16, and it is not necessary to lock the middle tube 13 unless the equipment on the quadruped or tripod is not very heavy.

[0067] It should also be noted that other embodiments and functional operations are described in conjunction with the accompanying drawings and instructions. For example, the load-bearing capacity of the telescopic tube of the present invention is significantly improved compared with that of existing tripod telescopic tubes; and there are also tripod-related embodiments and functional operations; other embodiments and functional operations will not be described in detail here.

Claims

1. A quadripod or tripod that allows for quick telescopic positioning and easy opening, characterized in that: It includes at least three sets of telescopic tubes, each consisting of an outer tube (6), at least one inner tube, at least one telescopic locking device (8), and a connecting sleeve (9). It also includes a main connector (11), a middle tube (13), and a middle telescopic tube (16). The connecting sleeve (9) is hinged to the main connector (11) and connected to the outer tube (6) or the inner tube. The main connector (11) is fitted onto the middle tube (13). A pusher (17) is fitted onto the main connector (11) or the middle tube (13). A pressing stroke space is left between the pusher (17) and the main connector (11). The outer periphery of the pusher (17)... The sides of the main connector (11) are symmetrically provided with four or three petal-shaped push-button ears (228) when viewed from above. The sides of the main connector (11) are provided with four or three petal-shaped stepped ear seats (229) when viewed from above. A locking button (336) with at least three locking heads (333) is provided between the main connector (11) and the middle tube (13). At least two locking strips (337) are provided on the top of the main connector (11). The bottom of the outer periphery of the locking button (336) presses against the top of the inner periphery of the push-button (17). The top of the locking button (336) is provided with at least two oblique openings on the inner periphery. The locking button (338) has at least three latches on its underside that engage with the inner circumference of the main connector (11). The locking strip (337) engages with the inclined surface and locks the middle tube (13). The middle tube (13) has a clamping sleeve (339) with several openings and threads that is clamped or pressed onto its upper surface. The locking button (338) has a locking handle (666) on its upper surface that engages with the clamping sleeve (339) to lock the middle telescopic tube (16). The locking handle (666) has a connecting rod on its upper surface that connects to the middle telescopic tube (16). A button (667) is provided with an internal thread, which is connected to a connector A (668). One end of the connector A (668) is provided with an external thread of 3 / 8 inch diameter, and the other end of the connector A (668) is provided with external threads of 3 / 8 and 1 / 4 inch diameters. A lock handle (777) with a stepped recess (669) and an internal thread of 3 / 8 inch diameter is provided on the top of the button (667). The lock handle (777) can lock or unlock the connector A (668). A rubber gasket is fixed on the top of the lock handle (777).

2. The quadrilateral or tripod with quick telescopic positioning and easy opening according to claim 1, characterized in that: The outer tube (6) is covered with a protective glove. The outer tube (6) has locking holes (21) on both sides. The outer tube (6) is connected to the inner tube. The inner tube includes a lower inner tube (18) and at least one upper inner tube (19). The upper inner tube (19) is connected to the inside of the outer tube (6). The lower inner tube (18) is connected to the inside of the upper inner tube (19). The upper part of the upper inner tube (19) and the lower inner tube (18) are both provided with the telescopic locking device (8). The telescopic tube is in four or three sets.

3. The quadrilateral or tripod with quick telescopic positioning and easy opening according to claim 2, characterized in that: Locking holes (22) are provided on the bottom side of the outer tube (6) and the upper inner tube (19). Locking holes A (23) are symmetrically provided on the bottom side of the tube wall of the locking holes (22). The locking holes A (23) are provided with several openings, external threads, and a clamping sleeve (25) with a conical bottom. The clamping sleeve (25) is provided with a locking button (26) with an internal thread and a conical bottom. The conical surface of the clamping sleeve (25) cooperates with the conical surface of the locking button (26). The outer side of the clamping sleeve (25) is symmetrically provided with a positioning platform A (27). The positioning platform A (27) is engaged in the locking hole A (23) or the upper part of the clamping sleeve (25) and the outer inner tube (19). The lower part of the tube (6) is fixed by point pressure. The lower inner tube (18) has symmetrical locking holes B (28) on the tube wall at the bottom. The lower inner tube (18) has a threaded sleeve (29) with an inner hole at the bottom. The threaded sleeve (29) has a positioning platform B (32) symmetrically opened on the outside of the threaded sleeve (29). The positioning platform B (32) is locked in the locking hole B (28). The bottom of the threaded sleeve (29) has a knob (33) with a step and an internal thread. The threaded sleeve (29) and the knob (33) have an adjustment knob (36) on the outside. The threaded sleeve (29) and the knob (33) have a retractable foot nail (37) inside or a detachable roller on the bottom of the adjustment knob (36).

4. The quadrilateral or tripod with quick telescopic positioning and easy opening according to claim 2, characterized in that: The telescopic lock device (8) includes a lock body A (38), a lock body B (39), a U-shaped unlocking component A (58), a U-shaped unlocking component B (61), a lug (62), and an elastic component. The U-shaped unlocking component A (58) is disposed in the lower inner tube (18), and the U-shaped unlocking component B (61) is disposed in the upper inner tube (19). The lower parts of the lock body A (38) and the lock body B (39) are provided with steps. The bodies of the lock body A (38) and the lock body B (39) cooperate with the inner wall of the outer tube (6) and the inner wall of the inner tube. The tube at one end of the inner tube... The lock body has two symmetrically arranged slots and a C-shaped ring (66) with a boss (63). The C-shaped ring (66) is locked in the slot. The lower parts of the lock body A (38) and the lock body B (39) have symmetrically arranged openings on both sides. The front of the lock body A (38) and the lock body B (39) has two concave holes and a stepped recess (69) with two guide grooves (68). The upper side of the lock body A (38) has a retaining edge (73). The bottom surface of the lock body A (38) and the lock body B (39) has a groove. The middle part of the lock body A (38) and the lock body B (39) and All edges are provided with through holes, and the two sides of the through hole in the middle are symmetrically provided with limit openings. Both sides of the U-shaped unlocking component A (58) and the U-shaped unlocking component B (61) are provided with a set of inclined blocks (78) or two sets of inclined blocks symmetrically provided on both sides. The outer sides of the top and bottom of both sides of the U-shaped unlocking component A (58) and the U-shaped unlocking component B (61) are provided with buckles. The upper part of the U-shaped unlocking component A (58) is provided with a threaded hole and a protrusion (79) with a notch on one side adjacent to it. A threaded iron rod (82) is provided in the threaded hole. The U-shaped unlocking component B (61) is provided with a threaded hole. The upper part is provided with a through hole. The lower part of the ear tongue (62) is a cylinder. The middle part of the ear tongue (62) is a U-shaped opening. The two sides of the ear tongue (62) are symmetrically provided with countersunk ears (83). At least one set of inclined surfaces are provided on both sides of the U-shaped opening. The bottom edge of the U-shaped opening is symmetrically provided with guide blocks (86). The U-shaped unlocking component A (58) is inserted into the limiting opening (77). The ear tongue (62) is placed in the stepped recess (69) and the guide block (86) cooperates with the guide groove (68). Elastic components are provided between the two recesses and the ear tongue (62).

5. The quadrilateral or tripod with quick telescopic positioning and easy opening according to claim 1, characterized in that: A sleeve fitting (87) is installed inside the tube above the outer tube (6). Positioning platforms C (88) are provided on both sides of the sleeve fitting (87). A guide hole (89) is provided on the upper part of the sleeve fitting (87). An opening is provided at the lower part of the guide hole (89). A limiting hole (91) and a through hole (92) are provided on one side of the opening. A shifting member (93) is hinged in the limiting hole (91) and the through hole (92). A guide opening (96) is provided at one end of the shifting member (93). A notch or slot is provided at the lower part of the through hole (92). A permanent magnet (97) or an electromagnet is provided in the notch. A slot is provided on the other side of the opening. The notch has step clips (98) on both sides. A pressing member (99) with an open end is provided in the guide hole (89). The other end of the pressing member (99) is cylindrical. A buckle is symmetrically provided on one side of the pressing member (99) to cooperate with the step clip (98). A guide opening (111) is provided on the other side of the pressing member (99). A pull wire (113) is provided in the guide opening (96) and the guide opening (111). A fixing head is fixed at one end of the pull wire (113) to press against the upper part of the guide opening (111). A positioning hole (116) is provided at the bottom of the pressing member (99).

6. The quadrilateral or tripod with quick telescopic positioning and easy opening according to claim 1, characterized in that: The connecting sleeve (9) has an eccentric shaft hole (117) on its side and a cut (118) on its top. Both the inner and outer sides of the cut (118) have cut surfaces (220). The inner side of the outer periphery of the connecting sleeve (9) has an ear seat (221). The side of the ear seat (221) has a screw hole. A screw is installed in the screw hole. The connecting sleeve (9) is connected to the outer tube (6) or the inner tube by bolts or by point pressing.

7. The quick-extending and easy-to-open quadripod or tripod according to claim 6, characterized in that: The main connector (11) has four or three connecting ears (223) with connecting holes (222) symmetrically opened on the lower part of its outer periphery. The connecting ears (223) are inserted into the cutout (118). The upper part of each connecting ear (223) has a stepped pressing hole. (226) An elastic element is provided in the pressing hole (226). At least three pressing heads (227) are evenly distributed on the lower or side surface of the outer periphery of the pressing part (17). The lower part of the pressing head (227) is a stepped cylinder and passes through the pressing hole (226). Under the action of the elastic element, it is flush with the bottom surface of the connecting ear (223). The eccentric shaft hole (117) is hinged to the connecting hole (222) by bolts or rivets respectively.

8. The quadrilateral or tripod with quick telescopic positioning and easy opening according to claim 1, characterized in that: A connecting seat (778) and a connecting cover (779) are provided on the lower part of the middle tube (13). The connecting seat (778) or the connecting cover (779) is pressed and fixed to the lower part of the middle tube (13). The connecting seat (778) and the connecting cover (779) are connected by at least one screw. The connecting seat (778) and the connecting cover (779) are provided with threaded holes in their middle parts. A connector B (886) is provided in the threaded holes, and the connector B (886) can be connected to a gimbal or a single-leg telescopic rod. The outer periphery of the middle tube (13), the connecting seat (778) and the connecting cover (779) are symmetrically provided with four or three openings. The connecting cover (779) is provided with four or three bearing seats (888). The middle or upper part of the outer tube (6) is provided with a hinge. A connecting block with a hole is fixed on the outside of the locking ring (889) or the outer tube (6). The hinge part of the locking ring (889) or the connecting block is respectively connected to four or three openings and four or three shaft seats (888) with four or three interconnected and rotatable connecting rods (999). When the middle tube (13) or the middle telescopic tube (16) moves up and down, it can link the four or three connecting rods (999) and drive the four or three sets of telescopic tubes to open outwards or close inwards synchronously.

9. The quick-extending and easy-to-open quadripod or tripod according to claim 4, characterized in that: The outer periphery of the main connector (11) has a cavity, and a conversion component is provided in the cavity. The conversion component is connected to a pull rope that can control the ear tongue (62) or the U-shaped unlocking component A (58) and the U-shaped unlocking component B (61).

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