CN112503360A

CN112503360A - Four-leg frame or tripod capable of being quickly positioned in telescopic mode and conveniently opened

Info

Publication number: CN112503360A
Application number: CN202110056985.XA
Authority: CN
Inventors: 周文化
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-03-16

Abstract

The invention discloses a tetrapod or tripod capable of being quickly positioned in a telescopic way and conveniently opened, and belongs to a lifting support device. The telescopic device comprises at least three groups of telescopic pipes consisting of an outer pipe, at least one section of inner pipe, at least one telescopic lock device and a connecting sleeve, and further comprises a main connecting piece and a middle pipe or middle telescopic pipe, wherein the connecting sleeve is hinged with the main connecting piece and is connected with the outer pipe or the inner pipe, the main connecting piece is sleeved with the middle pipe, the main connecting piece or the middle pipe is sleeved with a pressing piece, and a pressing stroke space is reserved between the pressing piece and the main connecting piece. Compared with the common tripod, the tripod has the advantages that the tripod is opened and retracted, the telescopic pipe does not need to be unlocked and locked for many times, the tripod does not need to be stood down, the possibility that the tripod can fall down is avoided, the telescopic pipe of the tripod is rapidly extended and automatically positioned, the telescopic pipe is rapidly retracted and automatically limited, and the tripod with higher stability than the tripod on the plane is realized on the basis. Meanwhile, the experience feeling of people in use is met.

Description

Four-leg frame or tripod capable of being quickly positioned in telescopic mode and conveniently opened

Technical Field

The invention belongs to a lifting support device, and particularly relates to a tripod or a tripod capable of being quickly positioned in a telescopic manner and conveniently opened.

Background

At present, tripods on the market almost have the function of stretching a plurality of sections of telescopic pipes (foot pipes), have the characteristics of small volume, convenient carrying and convenient matching use, are widely applied to various fields, and become one of necessary articles for most people. Common tripod-supported devices include cameras, surveying instruments, cameras, projectors, displays, astronomical mirrors, cameras, microphones, lights, audio systems, displays, and other objects requiring support.

However, the above-mentioned existing products or prior art tripods have some disadvantages or have some serious disadvantages for a long time:

1. the telescopic pipe of above-mentioned tripod almost all utilizes screw thread or eccentric lug or eccentric pipe locking, and some even still use bolt locking, adopts such structure operation to have a lot of awkward situations, for example: when the tripod is operated, a user may bend down or squat for many times, and needs to hold the tripod with one hand and operate unlocking or locking with the other hand; however, if the user is standing up, he or she needs to hold the tripod with one hand and lift the set of telescopic tubes with the other hand and also use this hand to unlock or lock the telescopic tubes, but this may also cause the lifted telescopic tubes to fall off with a loose hand or the tripod to fall down with a center of gravity offset. Such a process seriously affects the user experience.

2. Before the tripod is pulled out of the telescopic pipes, the telescopic pipes of each section and each group need to be respectively unlocked in advance to be pulled out.

3. The tripod needs to lock each section and each group of the telescopic pipes respectively after the telescopic pipes are pulled out.

4. When the pulled-out telescopic pipes need to retract, the telescopic pipes of each section and each group have to be unlocked again and then are retracted and locked respectively.

5. The tripod is inconvenient to open at an angle, and the extension tubes of each group are almost opened respectively.

6. The tripods described above are hardly able to open any angle simultaneously and quickly within the normal range of use.

7. The locking of the telescopic pipe of the tripod is easy to loosen, and the tripod is unstable and extremely easy to overturn as long as one telescopic pipe is loosened, and even equipment on the tripod can be possibly broken. In addition, the weight of the tripod support apparatus described above is also very limited.

8. The tripod cannot be rapidly and synchronously locked and fixed after being folded.

9. The tripod has insufficient plane stability when opened and is easy to topple in a certain direction when operated. Also, for example: at a news conference, many reporters use a tripod camera, and the tripod cannot be opened greatly due to the limitation of field size and frontal concentration, otherwise, the tripod can not only affect others but also reduce the height, but the tripod can be opened less and the stability of the tripod can be affected.

Based on this, there is an urgent need to develop a simpler structure, a more convenient function, and a more recent variety of technologies to solve the above-mentioned problems. Therefore, through several months of attack and customs, the inventor finally solves some problems, even breaks through the problems that a plurality of contradictions exist in the structure and space or the principle is difficult to establish, and the structure and the function are required to be simple and practical.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a tripod or a tripod capable of being quickly stretched and positioned and conveniently opened aiming at the defects in the prior art so as to overcome the defects in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the device comprises at least three groups of telescopic pipes consisting of an outer pipe, at least one section of inner pipe, at least one telescopic lock device and a connecting sleeve, and further comprises a main connecting piece and a middle pipe or middle telescopic pipe, wherein the connecting sleeve is hinged with the main connecting piece and connected with the outer pipe or the inner pipe, the main connecting piece is sleeved with the middle pipe, the main connecting piece or the middle pipe is sleeved with a pressing piece, and a pressing stroke space is reserved between the pressing piece and the main connecting piece.

Further, the outside cover of outer tube is equipped with the gloves, the outer tube cup joints the inner tube, the inner tube includes inner tube and at least a lesson upper inner tube down, it cup joints to go up the inner tube the inside of outer tube, lower inner tube cup joints the inside of going up the inner tube, go up the inner tube with the upper portion of inner tube all is provided with telescopic lock device down, flexible pipe is four groups or three groups.

Furthermore, both sides of the outer tube are respectively provided with a clamping hole, the tube wall of one side of the bottom of the outer tube and the upper inner tube is respectively provided with a lock hole opening or the inner sides of the outer tube and the inner tube are provided with racks which are electrodeless telescopic links, the tube wall of the bottom of the lock hole opening is symmetrically provided with a locking hole A, the locking hole A is internally provided with a plurality of openings and external threads and a clamping sleeve with a conical surface at the bottom, the outer surface of the clamping sleeve is provided with a locking button with internal threads and a conical surface at the bottom, the conical surface of the clamping sleeve is matched with the conical surface of the locking button, the outer side of the clamping sleeve is symmetrically provided with a positioning table A, the positioning table A is clamped in the locking hole A or the upper part of the clamping sleeve is fixedly connected with the lower part of the outer tube in a point pressing manner, the tube wall of the bottom of the lower inner tube is symmetrically provided with a locking, location platform B has been seted up to the thread bush outside symmetry, location platform B joint is in the locking hole B, the bottom of thread bush is provided with takes step and internal screw thread knob, the thread bush with the outside of knob is provided with the adjusting knob, the thread bush with the inside of knob is provided with the telescopic foot nail or the bottom of adjusting knob is provided with the detachable gyro wheel.

Further, the retractable lock device comprises a lock body a, a lock body B, U type unlocking piece A, U type unlocking piece B, an ear tongue and an elastic piece, wherein the lock body a and the U type unlocking piece a are arranged in the lower inner tube, the lock body B and the U type unlocking piece B are arranged in the upper inner tube, the lower parts of the lock body a38 and the lock body B39 are provided with step bodies, the body of the lock body a38 and the lock body B39 is matched with the inner wall of the outer tube and the inner wall of the inner tube, the tube body at one end of the inner tube is symmetrically provided with two bayonets and sleeved on the step bodies, the two bayonets are provided with C-shaped rings of bosses and clamped in the bayonets, the two sides of the lower parts of the lock body a38 and the lock body B39 are symmetrically provided with openings, the front of the lock body a38 and the lock body B39 is provided with two concave holes and step recesses of two guide grooves, the side edge 829, the bottom surfaces of the lock body A38 and the lock body B39 are provided with notches, the middle parts and the edge parts of the lock body A38 and the lock body B39 are provided with through holes, two sides of the middle through hole are symmetrically provided with limit openings, two sides of the U-shaped unlocking piece A and the U-shaped unlocking piece B are provided with a group of inclined plane blocks or two sides are symmetrically provided with two groups of inclined planes, the upper surfaces and the outer sides of the bottoms of the two sides of the U-shaped unlocking piece A and the U-shaped unlocking piece B are provided with buckles, the upper part of the U-shaped unlocking piece A is provided with a threaded hole and a convex block with a notch on the adjacent side surface, an iron bar or an iron bar fixedly connected by screw threads is arranged in the threaded hole, the upper part of the U-shaped unlocking piece B is provided with a through hole, the lower part of the lug tongue is a cylinder, the middle part of the lug tongue is provided with a U-shaped opening, two side surfaces of the lug tongue are symmetrically, the base symmetry of U type mouth has seted up the guide block, U type unlocking piece A card is inserted in the spacing mouth, the lug tongue is place just in the step notch the guide block with the guide slot cooperatees, two shrinkage pools with all be provided with the elastic component between the lug tongue.

Furthermore, a sleeve piece is arranged in the pipe above the outer pipe, positioning platforms C are arranged on two sides of the sleeve piece and matched with the clamping holes, a guide hole is arranged on the upper portion of the sleeve piece, an opening is arranged on the lower portion of the guide hole, a limiting hole and a through hole are arranged on one side portion of the opening, a shifting piece is hinged in the limiting hole and the through hole, a guide opening is arranged on one end portion of the shifting piece, a notch or a slotted hole is arranged on the lower portion of the through hole, a permanent magnet or an electromagnet is arranged in the notch, a notch is arranged on the other side portion of the opening, step clamps are arranged on two sides of the notch, a pressing piece with one end portion in a mouth shape is arranged in the guide hole, the other end portion in the mouth shape is a cylinder and penetrates through the middle portion in the mouth shape, and a buckle is, the other side part of the pressing piece is provided with a guide opening, a pull wire is arranged in the guide opening and the guide opening, one end of the pull wire is fixedly provided with a fixing head which is pressed against the upper part of the guide opening, the other end of the pull wire is arranged in the upper inner tube and penetrates through the lock body B provided with a through hole to be connected with the lug provided with the notch, the bottom of the pressing piece is provided with a positioning hole, and the lower inner tube drives the iron rod to retract in place and then penetrate into the positioning hole.

Further, shaft hole or eccentric shaft hole have been seted up to the side of adapter sleeve, the incision has been seted up to the higher authority of adapter sleeve, the tangent plane has all been seted up with the outside to notched interior survey, the ear seat has been seted up to the interior survey of adapter sleeve periphery, the screw hole has been seted up to the side of ear seat, be provided with the screw in the screw hole, the adapter sleeve with the outer tube or by screwed connection or point pressure rigid coupling between the inner tube.

Further, four or three engaging lugs with connecting holes are symmetrically arranged below the periphery of the main connecting piece, the engaging lugs are inserted into the notches, abutting holes with steps are arranged on the upper portions of the engaging lugs, elastic pieces are arranged in the abutting holes, the abutting holes are aligned with the guide holes, at least three abutting heads are uniformly arranged below or on the side face of the periphery of the main connecting piece, a step-shaped cylinder is arranged below the abutting heads and penetrates through the abutting holes, the abutting heads are flush with the bottom faces of the engaging lugs under the action of the elastic pieces, and the eccentric shaft holes are hinged to the connecting holes through bolts or rivets.

Furthermore, four or three pressing lugs which are in a petal shape when overlooking are symmetrically arranged on the side surface of the periphery of the pressing piece, four or three step lug seats which are in a petal shape when overlooking are arranged between the side surface of the periphery of the main connecting piece and the connecting lugs and are matched with the pressing lugs, a locking button with at least three locking heads below or a locking sleeve with at least three locking heads rotating clockwise from large to small below is arranged between the main connecting piece and the middle pipe, at least two U-shaped openings are arranged on the locking sleeve, locking buttons which are mutually clamped are arranged on the U-shaped openings, at least two locking strips are arranged on the main connecting piece, the lug seats are matched with the locking heads, the bottom of the periphery of the locking button is pressed on the upper surface of the inner peripheral part of the pressing piece, and locking buttons with at least two inclined planes on the inner peripheral part are arranged on the locking button, at least three buckle and the interior week looks joint of main union piece has been seted up below the locking button, the locking strip with the inclined plane matches and can lock well pipe, the higher authority joint of well pipe or the point pressure rigid coupling have a plurality of opening and threaded cover that compresses tightly, the higher authority of locking button be provided with compress tightly the cover cooperation can lock well flexible pipe's lock handle, well flexible pipe includes well pipe, the higher authority of lock handle be provided with the connecting button that well flexible pipe is connected, the internal thread has been seted up to the connecting button, female connection has connector A, diameter 3/8 inch's external screw thread has been seted up to connector A's one end, diameter 3/8 and 1/4 inch's external screw thread has been seted up to connector A's another tip, the higher authority of connecting button sets up and has cup jointed step shrinkage pool and diameter 3/8 internal thread lock handle, the lock handle can lock or unlock the connector A, and a rubber pad is fixedly arranged on the lock handle.

Furthermore, a connecting seat and a connecting cover are arranged below the middle pipe, the connecting seat or the connecting cover is fixedly connected below the middle pipe in a point pressing mode, the connecting seat and the connecting cover are connected through at least one screw, a threaded hole is formed in the middle of the connecting seat and the connecting cover, a connecting head B is arranged in the threaded hole, and the connecting head B can be connected with a holder or a single-foot telescopic rod; the periphery of the middle pipe, the connecting seat and the connecting cover is symmetrically provided with four or three openings, the joint part of the connecting seat and the connecting cover is provided with four or three shaft seats, the middle or middle upper part of the outer pipe is provided with a hinged locking ring or the outer side of the outer pipe pressing piece is fixedly provided with a connecting block with a hole, the hinged parts of the locking ring or the connecting block are respectively provided with four or three mutually connected and rotatable connecting rods with the four or three openings and the four or three shaft seats, and when the middle pipe or the middle telescopic pipe moves up and down, the middle pipe or the middle telescopic pipe can be linked with the four or three connecting rods and drive four or three groups of telescopic pipes to synchronously open outwards and also can be.

Furthermore, a cavity is formed in the periphery of the main connecting piece, a conversion piece is arranged in the cavity, and the conversion piece is connected with a pull rope capable of controlling the lug tongue or the unlocking piece.

The beneficial effects of the invention are mainly shown as follows:

1. the invention not only realizes the long-term solution of the difficult problem which people can not solve by thinking of the tripod with simple structure and rapid and convenient use; but also realizes that the telescopic pipe can be opened and retracted without stooping or squatting, and the tripod can be fallen down without worrying, thereby meeting the experience of people in use.

2. The extension tubes of the quadruped or tripod of the invention extend out quickly and are positioned automatically (each section and each group of extension tubes are not required to be unlocked in advance and locked respectively):

the telescopic pipes are four groups or three groups, the press pieces are used for pressing iron rods (the iron rods are separated from the permanent magnets) below the pressing pieces of each group of telescopic pipes, and after each group of telescopic pipes are lowered to the right position by using partial pressing force and the gravity of the lower telescopic pipes, the lug tongue of each telescopic lock device of each group extends out under the action of the elastic pieces and is automatically positioned with the lock hole openings of the outer pipe and the inner pipe.

3. The extension tubes of the tetrapods or the tripods of the invention retract rapidly and are limited automatically (each section and each group of extension tubes are not required to be unlocked in advance and locked respectively):

the telescopic pipe comprises a lower inner pipe of each group and at least one section of upper inner pipe, wherein the upper parts of the lower inner pipe and the upper inner pipe are respectively provided with a telescopic lock device, a pressing piece is utilized to drive a transposition piece and a pull wire to simultaneously enable the lugs and tongues of the telescopic lock devices of the lower inner pipes of each group to transversely retract and unlock, at the moment, a main connecting piece is pressed downwards to enable the lower inner pipes to upwardly retract by utilizing the reaction force of the ground, meanwhile, the telescopic lock devices of the lower inner pipes abut against the telescopic lock devices of the upper inner pipes to force the lugs and tongues of the telescopic lock devices to transversely retract and unlock, if the telescopic lock devices of the plurality of sections of telescopic pipes are also repeatedly abutted against each other, the telescopic pipes of each group can be simultaneously retracted, and in the process, an iron rod (the iron rod and a permanent magnet are attracted.

4. The angle of the four-leg stand or the tripod is very convenient to open, four or three connecting rods which are connected with one end of the middle pipe in a shaft way can be driven to be hinged and linked with the outer pipe by only pulling out or partially pulling out the lock handle on the middle pipe, the angles of four groups or three groups of telescopic pipes can be synchronously and quickly opened at the same time, and in addition, the lock head handle can be pulled out to take out the lock handle or be independently pulled out to increase the height of the leg stand. And the connector can also be used for locking the middle pipe and the middle telescopic pipe respectively, and can also be used for loosening the locking disc on the middle telescopic pipe, so that the 3/8 (connecting tripod head) or 1/4 inch (connecting camera) connector can be detached and reversed. In addition, a connecting head for connecting a tripod head or a single-foot telescopic pipe is also arranged below the middle pipe.

5. The quadruped stand or the tripod stand can synchronously and quickly open any angle within the normal use range, and can control any angle of opening of each group of telescopic pipes only by pulling out more or less lock handles.

6. The telescopic pipes of each section and each group of the tetrapods or the tripods are positioned by using the lugs and the locking holes, so the telescopic pipes cannot be loosened and turned over, and the weight of the supporting equipment can be greatly improved.

7. The tripod or the tripod can be quickly and synchronously locked and fixed in a self-locking way after being folded, and can be locked only by clockwise rotating the locking button by certain angles.

8. The invention utilizes the tetrapods to replace the traditional tripods, and solves some problems of the tripods in the scene of taking charge. For example: on the news conference, the four-foot stand can be opened to a smaller angle and a higher height than the traditional tripod, and influences on others to be smaller.

9. The principle, the structure and the using effect of the stability of the tripod are obviously improved compared with the traditional tripod. The traditional tripod almost adopts a tripod lengthening mode for improving stability, however, the lengthening can only increase the stability properly, and the traditional tripod can not be lengthened so much, so that the tripod is easy to topple between two telescopic pipes in a certain position during operation, and the lengthening increases the occupied area. In addition, the space is four directions, namely front, back, left and right, and the tripod is only provided with three directions, and each direction is only provided with one telescopic pipe as a fulcrum. And the spider has two pivot points (one of which is common) for each orientation. Meanwhile, each telescopic pipe is opened at an angle to form a circle, and the distance from the middle point of the straight line of the two telescopic pipes to the center of the circle in the middle of each telescopic pipe can be proved, so that the more the telescopic pipes are, the longer the distance is, and the higher the stability is. The tripod is on uneven ground, the stability is high, but all on the same plane, and the stability of the tetrapods is much higher than that of the tripod. In addition, there are many cases that can prove why, for example, the bench has four feet instead of three feet. For another example, trees which are transplanted on both sides of a road shortly before are fixed by tripods in order to prevent the trees from being blown down by strong wind, and the trees are supported by the tetrapods at present without increasing the cost. In addition, the tetrapod can also adjust the foot nail of a certain telescopic pipe like a tripod and can also loosen the locking button to adjust the length of the inner pipe so as to realize that the tetrapod is suitable for various uneven ground surfaces.

Drawings

FIG. 1 is a schematic view of a foldable tripod according to the present invention;

FIG. 2 is a schematic perspective view of a tetrapod push-out extension tube according to the present invention;

FIG. 3 is a schematic view of a three-dimensional structure of the present invention, wherein a part of the lock handle is arbitrarily pulled out to drive the tetrapods to open at a synchronous angle;

FIG. 4 is a schematic view of a three-dimensional structure of the present invention in which the tetrapods are opened by pressing out the extension tube and pulling out the lock handle to drive the tetrapods to open at a synchronous angle;

FIG. 5 is a schematic perspective view of the tripod of the present invention showing the telescopic tube pushed out and the lock handle pulled out to drive the tripod to open at a synchronous angle and to take out the telescopic nails;

FIG. 6 is a schematic view of a three-dimensional structure of the present invention, in which the tetrapods are opened by pressing out the extension tube and pulling out the locking handle to drive the tetrapods to open at a synchronous angle;

FIG. 7 is a schematic view of a three-dimensional structure of the tripod of the present invention in which a portion of a lock handle is pulled out to open the tripod at a synchronous angle according to the extension tube;

FIG. 8 is an exploded perspective view of the tetrapod of the present invention except for the extension tube;

FIG. 9 is an exploded perspective view of a set of telescoping tubes of the present invention;

FIG. 10 is a middle sectional view of the internal structure of a set of telescoping tubes of the present invention after retraction;

FIG. 11 is a side sectional view of the inner structure of a set of telescoping tubes of the present invention shown in the open position;

fig. 12 is a schematic perspective view of the tripod in the folded state according to the present invention.

The reference numbers in the figures are:

6. an outer tube; 8. a telescopic lock device; 9. connecting sleeves; 11. a main connecting piece; 13. a middle tube; 16. a middle telescopic pipe; 17. pressing; 18. a lower inner tube; 19. an upper inner tube; 21. a position clamping hole; 22. a lock orifice; 23. a locking hole A; 25. a clamping sleeve; 26. a locking button; 27. a positioning table A; 28. a locking hole B; 29. a threaded sleeve; 32. a positioning table B; 33. a knob; 36. an adjusting knob; 37. foot nails; 38. a lock body A; 39. a lock body B; 58. a U-shaped unlocking piece A; 61. a U-shaped unlocking piece B; 62. ear-tongue; 63. a boss; 66. a C-shaped ring; 68. a guide groove; 69. a step recess; 73. blocking edges; 77. a limiting port; 78. a bevel block; 79. a bump; 82. an iron rod; 83. a lug; 86. a guide block; 87. a sleeve member; 88. a positioning table C; 89. a guide hole; 91. a limiting hole; 92. a port; 93. a transposition piece; 96. a guide port; 97. a permanent magnet; 98. step clamping; 99. a pressing member; 111. a guide port; 113. a pull wire; 116. positioning holes; 117. an eccentric shaft hole; 118. cutting; 220. cutting into noodles; 221. an ear mount; 222. connecting holes; 223. connecting lugs; 226. pressing the hole; 227. pressing head; 228. a button lug; 229. a step ear seat; 333. a locking head; 336. locking the clamping button; 337. a locking strip; 338. a locking button; 339. a compression sleeve; 666. a lock handle; 667. a connecting button; 668. a connector A; 669. step concave holes; 777. a lock head handle; 778. a connecting seat; 779. a connecting cover; 886. a connector B; 888. a shaft seat; 889. locking a ring; 999. a connecting rod.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

It should be noted that, according to the above-mentioned contents of the present invention, other modifications, substitutions or alterations can be made without departing from the basic technical idea of the present invention by using the common technical knowledge and the conventional means in the field.

It is also noted that in the description of the present invention, for example: the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In addition, the technical features related to the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other or have another structure.

Preferred embodiments of the present invention will be described in further detail below with reference to the associated drawings.

Example 1: (four-foot stand structure)

Referring to fig. 1 to 11, a tetrapod is taken as an example: the device comprises an outer pipe 6, an inner pipe, a telescopic lock device 8 and a connecting sleeve 9; the outer part of the outer pipe 6 is sleeved with a protective glove, the outer pipe 6 is sleeved with an inner pipe, the outer pipe 6 is also the thickest pipe, the inner pipe comprises a lower inner pipe 18 and an upper inner pipe 19, the upper inner pipe 19 is sleeved in the outer pipe 6, the lower inner pipe 18 is sleeved in the upper inner pipe 19, the upper parts of the upper inner pipe 19 and the lower inner pipe 18 are respectively provided with a telescopic lock device 8, and a connecting sleeve 9 is connected with the upper end part of the outer pipe 6 and respectively forms four groups of three-section telescopic pipes; the pressing device further comprises a main connecting piece 11 and a middle telescopic pipe 16, the connecting sleeve 9 is hinged with the main connecting piece 11, the main connecting piece 11 is sleeved with the middle pipe 13, the main connecting piece 11 is sleeved with a pressing piece 17, and a pressing stroke space of about 5 mm is reserved between the pressing piece 17 and the main connecting piece 11.

As shown in fig. 5 and 9 to 11, the retractable lock device 8 further includes a lock body a38, a lock body B39, a U-shaped unlocking member a58, a U-shaped unlocking member B61, an ear tongue 62, and an elastic member, wherein the lock body a38 and the U-shaped unlocking member a58 are disposed in the lower inner tube 18, the lock body B39 and the U-shaped unlocking member B61 are disposed in the upper inner tube 19, steps are disposed at the lower portions of the lock body a38 and the lock body B39, and the body of the lock body a38 and the lock body B39 is matched with the inner wall of the outer tube 6 and the inner wall of the inner tube, so that the lock body B39 of the upper inner tube 19 can slide up and down in the outer tube 6; two bayonets have been seted up to the pipe shaft symmetry of inner tube tip and cup jointed at the step body, and two bayonets are provided with the C type ring 66 of boss 63 and block in the bayonet socket, and it is very convenient to install like this, only needs insert on the step body with the interior 7 that two bayonets were seted up to a tip, then blocks C type ring 66 in the bayonet socket, just can be fixed with inner tube and lock body A38 or lock body B39. The both sides of lock body A38, lock body B39 lower part symmetry have seted up the opening, and two shrinkage pools, the step notch 69 of two guide slots 68 have all been seted up to the front of lock body A38, lock body B39, and flange 73 has been seted up to the side above the lock body A38, and the notch has been seted up to the bottom surface of lock body A38, lock body B39, and the through-hole has all been seted up to the middle part and the edge part of lock body A38, lock body B39, and spacing mouth 77 has been seted up to the. A group of inclined plane blocks 78 are arranged on two sides of the U-shaped unlocking piece A58 and the U-shaped unlocking piece B61, buckles are arranged on the upper surface and the outer side of the bottom of two sides of the U-shaped unlocking piece A58 and the U-shaped unlocking piece B61, a threaded hole is formed in the upper portion of the U-shaped unlocking piece A58, a notched lug 79 is arranged on one adjacent side surface of the U-shaped unlocking piece A58, an iron rod 82 fixedly connected with threads is arranged in the threaded hole, a through hole is formed in the upper portion of the U-shaped unlocking piece B61, the lower portion of the lug tongue 62 is a cylinder, the middle portion of the lug tongue 62 is a U-shaped opening, lugs 83 of counter bores are symmetrically arranged on two side surfaces of the lug tongue 62, at least one group of inclined planes are arranged on two sides of the U-shaped opening, guide blocks 86 are symmetrically arranged on the bottom edge of the U-shaped opening, the U-shaped unlocking piece A58 is clamped in the. When the device is installed, firstly, the two elastic pieces are placed in the two concave holes, then the guide block 86 of the lug tongue 62 is aligned with the guide groove 68 in the step notch 69 and is placed and pressed, because the two elastic pieces are respectively limited in the two concave holes and the counter bores of the lugs 83 and have certain compression space, then the U-shaped unlocking piece A58 is clamped in the limiting opening 77, because a group of inclined plane blocks 78 of the U-shaped unlocking piece A58 are matched with a group of inclined planes of the lug tongue 62 and are under the action of the two elastic pieces, the U-shaped unlocking piece A3526 can be limited after being loosened, in addition, the two buckles at the bottom of the U-shaped unlocking piece A58 can be provided with the elastic pieces, and the U-shaped unlocking piece A58 can be pressed or pulled back to control the lug tongue 62.

Furthermore, both sides of the outer tube 6 are respectively provided with a clamping hole 21, the tube walls of the outer tube 6 and one side of the bottom of the upper inner tube 19 are respectively provided with a lock hole 22, the tube wall at the bottom of the lock hole 22 is symmetrically provided with a locking hole A23, a plurality of openings, external threads and a clamping sleeve 25 with a conical bottom are arranged in the locking hole A23, a locking button 26 with an internal thread and a conical bottom is arranged outside the clamping sleeve 25, and the conical surface of the clamping sleeve 25 is matched with the conical surface of the locking button 26; the two conical surfaces are matched, and the clamping sleeve 25 and the inner pipe are locked by the surface abutting surfaces, so that the locking capacity can be properly improved by surface locking. The outer side of the clamping sleeve 25 is symmetrically provided with a positioning table A27, the positioning table A27 is clamped in a locking hole A23, the pipe wall of the bottom of the lower inner pipe 18 is symmetrically provided with a locking hole B28, the bottom of the lower inner pipe 18 is provided with a threaded sleeve 29 with an inner hole, the outer side of the threaded sleeve 29 is symmetrically provided with a positioning table B32, a positioning table B32 is clamped in a locking hole B28, the bottom of the threaded sleeve 29 is provided with a knob 33 with a step and an inner thread, the periphery of the knob 33 can be fixedly provided with a rubber sleeve, the outer sides of the threaded sleeve 29 and the knob 33 are provided with an adjusting button 36, and the inner sides of the threaded sleeve 29 and the knob 33 are provided with a telescopic foot nail 37 or the bottom; by adopting the structure to adjust the telescopic foot nails 37, not only can the in-situ adjustment of the telescopic or retraction be convenient, but also the appearance is beautiful; and the bottom of the adjusting button 36 is provided with a detachable roller comprising a universal wheel so as to facilitate the movement or the replacement of the telescopic foot nails 37.

A sleeve member 87 is arranged in the pipe above the outer pipe 6, two sides of the sleeve member 87 are provided with positioning platforms C88, a positioning platform C88 is matched with the clamping hole 21, the upper part of the sleeve member 87 is provided with a guide hole 89, the lower part of the guide hole 89 is provided with an opening, one side part of the opening is provided with a limiting hole 91 and a through hole 92, the limiting hole 91 and the through hole 92 are internally articulated with a position changing member 93, one end part of the position changing member 93 is provided with a guide port 96, the lower part of the through hole 92 is provided with a notch, a permanent magnet 97 is arranged in the notch, the other side part of the opening is provided with a notch, two sides of the notch are provided with step clamps 98, one end part of the guide hole 89 is provided with a mouth-shaped press part 99, the other end part of the press part is a cylinder and penetrates through the mouth-shaped middle part, one side part of the press, one end of the pull wire 113 is fixedly provided with a fixing head which is pressed against the upper part of the guide opening 111, the other end of the pull wire 113 is connected with the projection 79 with a notch by passing through the lock body B39 with a through hole in the upper inner tube 19, the bottom of the pressing piece 99 is provided with a positioning hole 116, and the lower inner tube 18 drives the iron rod 82 to retract to the right position and then passes through the positioning hole 116.

As shown in fig. 1 to 8, further, four connecting lugs 223 with connecting holes 222 are symmetrically disposed below the periphery of the main connecting member 11, the connecting lugs 223 are inserted into the notches 118, pressing holes 226 with steps are disposed on the upper portions of the connecting lugs 223, elastic members are disposed in the pressing holes 226, the pressing holes 226 are aligned with the guide holes 89, at least three pressing heads 227 are uniformly disposed below the periphery of the pressing member 17, the pressing heads 227 are cylindrical and penetrate through the pressing holes 226, and are flush with the bottom surfaces of the connecting lugs 223 under the action of the elastic members, and the eccentric shaft holes 117 are respectively hinged to the connecting holes 222 through bolts. The bottom surface of the connecting lug 223 is flush so as to open the telescopic tube at an angle, when the telescopic tube returns, the pressing piece 17 is pressed to drive the cylinder below the pressing head 227 to pass through the pressing hole 226, and the bottom surface of the cylinder is rounded.

Furthermore, the side surface of the connecting sleeve 9 is provided with an eccentric shaft hole 117, the upper surface of the connecting sleeve 9 is provided with a notch 118, the inner side and the outer side of the notch 118 are both provided with a tangent plane 220, the inner side of the periphery of the connecting sleeve 9 is provided with an ear seat 221, the side surface of the ear seat 221 is provided with a screw hole, a screw is arranged in the screw hole, and the connecting sleeve 9 is connected with the outer tube 6 through the screw; when the connection sleeve 9, i.e. the extension tube, is folded, the inner section 220 is pressed against the side surface of the connection lug 223 for limiting, and the outer section 220 can be opened with or printed with a trademark.

The principle and the structure of the extension tube which can extend out quickly and can be positioned automatically are as follows:

by pressing the pressing lug 228, the pressing heads 227 of the four sets of telescopic pipes below the pressing lug 228 are driven to press the pressing piece 99, the iron rod 82 attracted by the permanent magnet 97 in the positioning hole 116 below each set of pressing piece 99 is forcibly moved downwards to be separated, and after the telescopic pipes are lowered to the proper position by using partial pressing force and the gravity of the telescopic pipes below, the lug tongue 62 of each set of telescopic lock device 8 extends out under the action of the elastic piece to be automatically positioned with the lock hole openings 22 of the outer pipe 6 and the inner pipe.

The principle and the structure of the telescopic pipe fast retracting and automatic limiting:

by pressing the pressing lug 228, the pressing heads 227 of the four groups of telescopic pipes below the pressing lug 228 are simultaneously driven to press the pressing piece 99, meanwhile, the cylinder below each group of pressing pieces 99 presses the transposition piece 93 hinged in the sleeve piece 87, one end of the transposition piece 93 is lifted upwards and drives the pull wire 113 to pull back the U-shaped unlocking piece A58 in the lower inner pipe 18, so that the lug tongue 62 is forced to transversely retreat and unlock, then the lower inner pipe 18 of each group is upwards retracted by the main pressing piece 11 by utilizing the reaction of the ground, at the moment, the pull wire 113 basically keeps the original position until the sealed bottom of the retracted lower inner pipe 18 presses one end of the pull wire 113, so that the lower section of the pull wire 113 is forced to bend in the cavity of the lower inner pipe 18, the pull wire 113 is a thin steel wire rope or steel wire, meanwhile, the U-shaped unlocking piece A58 of the lower inner pipe 18 presses the U-shaped unlocking piece B61 of the upper inner pipe 19, so that the lug tongue 62 of the telescopic, for example, if the upper inner tube is changed into the first inner tube and the second inner tube by a plurality of telescopic tubes, the mutual abutting process of the telescopic lock devices 8 can be repeated, so that the telescopic tubes of each group can be retracted simultaneously, in the process, the iron rod 82 fixed on the U-shaped unlocking piece A58 in the lower inner tube 18 retracts to the right position, the iron rod 82 penetrates into the positioning hole 116 to be mutually attracted with the permanent magnet 97 on the positioning hole, namely, the lower inner tube 18 is attracted on the sleeve member 87 to be automatically limited.

Furthermore, four pressing piece lugs 228 in petal shape in top view are symmetrically arranged on the side surface of the periphery of the pressing piece 17, four step lug seats 229 in petal shape in top view are arranged between the side surface of the periphery of the main connecting piece 11 and the connecting lugs 223 and matched with the pressing piece lugs 228, and four locking buttons 336 of the locking head 333 are arranged below the main connecting piece 11 and the middle pipe 13; when the locking button 336 rotates clockwise during folding, the four locking heads 333 and the four ear seats 221 are utilized, and the locking surfaces of the locking heads 333 and the ear seats 221 are provided with inclined surfaces and are locked more and more tightly, so that the four telescopic pipes are tightly matched and integrated with each other. In addition, the quadruped frame of the two telescopic pipes can be conveniently held transversely.

At least two locking strips 337 are arranged on the main connecting piece 11, the lug seat 221 is matched with the locking head 333, and the bottom of the periphery of the locking button 336 is pressed against the upper surface of the inner peripheral part of the pressing piece 17, so that the pressing pieces are mutually pressed without limitation, and the limitation of pressing and returning between the pressing piece 17 and the main connecting piece 11 is ensured. When the pressing lug 228 moves downwards, the outer side and the bottom surface of the step lug seat 229 are limited, when the pressing lug 228 moves upwards, the pressing piece 17 is limited, and when the pressing lug 228 presses, four elastic pieces in the pressing hole 226 are matched with the four pressing heads 227 to compress and return.

The upper surface of the locking button 336 is provided with a locking button 338 with at least two inclined surfaces on the inner periphery, the lower surface of the locking button 338 is provided with at least three buckles which are clamped with the inner periphery of the main connecting piece 11, two locking strips 337 are matched with the two inclined surfaces, the middle pipe 13 can be locked by slightly rotating the locking button 338 clockwise, and the locking button 338 can be unlocked by slightly rotating the locking button 338 anticlockwise; the middle pipe 13 is clamped or point-pressed with a plurality of opening and threaded pressing sleeves 339, the locking button 338 is provided with a locking handle 666 which is matched with the pressing sleeves 339 to lock the middle telescopic pipe 16, the middle telescopic pipe 16 comprises the middle pipe 13, the bottoms of the pressing sleeves 339 and the locking handle 666 are conical surfaces, the conical surface of the pressing sleeves 339 is matched with the conical surface of the locking handle 666, two conical surfaces are adopted to be matched, the pressing sleeves 339 and the inner pipe are both surface abutting surfaces to be locked, the locking handle 666 can be rotated clockwise to lock the middle telescopic pipe 16, and the locking handle 666 can be rotated counterclockwise to unlock.

A connecting button 667 connected with the middle telescopic pipe 16 is arranged on the lock handle 666, internal threads are formed in the connecting button 667, a connecting head A668 is connected with the internal threads, external threads with the diameter of 3/8 inches are formed in one end portion of the connecting head A668, external threads with the diameters of 3/8 inches and 1/4 inches are formed in the other end portion of the connecting head A668, a lock head handle 777 sleeved with a step concave hole 669 and the internal threads with the diameter of 3/8 is arranged on the connecting button 667, and the lock head handle 777 can lock the connecting head A. Namely, one end of the connector A668 is 3/8 inches and 1/4 inches and is connected with the connecting button 667, then the connector A668 is locked clockwise by the locking knob 777, and the other end of the connector A668 is 3/8 threads and can be connected with the cloud deck; conversely, the locking knob 777 may be rotated counterclockwise, the connector a668 may be removed and replaced by turning it upside down, and the locking knob 777 may be locked by rotating it counterclockwise, at which time the 1/4 inch connector a668 may be connected to the camera. The rubber pad for protecting the connecting equipment is fixedly arranged on the lock head handle 777.

Further, a connecting seat 778 and a connecting cover 779 are arranged below the middle pipe 13, the connecting seat 778 is fixedly connected below the middle pipe 13 in a point pressing manner, the connecting seat 778 is connected with the connecting cover 779 through at least one screw, a threaded hole is formed in the middle of the connecting seat 778 and the connecting cover 779, a connecting head B886 is arranged in the threaded hole, and the connecting head B886 can be connected with a holder; the periphery of the middle pipe 13, the connecting seat 778 and the connecting cover 779 is symmetrically provided with four, the joint part of the connecting seat 778 and the connecting cover 779 is provided with four, the middle upper part of the outer pipe 6 is provided with a hinged locking ring 889, the hinged part of the locking ring 889 is respectively provided with four openings and four shaft seats 888 which are internally provided with four connecting rods 999 which are mutually connected and can rotate; when the middle telescopic tube 16 moves up and down, the four connecting rods 999 can be linked and drive the four groups of telescopic tubes to synchronously open outwards and also synchronously close inwards.

The principle and the structure that four groups of extension tubes are opened at any angle simultaneously:

the middle pipe 13 is driven by the pull-out lock handle 666 or the lock head handle 777, at the same time, the four-bar linkage 999 with one end pivoted below the middle pipe 13 also moves upwards, meanwhile, the connecting sleeve 9 positioned and hinged on the upper part of each group of outer pipes 6 and the four-bar linkage 999 with the other end hinged with the locking ring 889 are synchronously opened at an outward angle, and the outer pipes 6 of each group can be driven and controlled to be opened at any angle within the normal use range according to the pulling amount and the pulling amount of the middle pipe 13.

Example 2: (tripod construction)

Basically, the principle is the same, the tripod is not greatly different from the structure of the tetrapod, and as shown in fig. 12, the tripod is changed to the tripod according to the embodiment 1. The rest is basically the same as embodiment 1, and is not described herein again.

Example 3: (Another Structure of a tripod and a tripod Telescopic tube)

On the basis of example 1, the following were changed: the connecting sleeve 9 is connected with the inner pipe, namely the thinnest pipe, the pull wire 113 is changed into a pressed iron wire or a carbon fiber rod which directly presses the telescopic lock device 8, and the structure is simpler. The rest is basically the same as embodiment 1, and is not described herein again.

Example 4: (Another Structure of a tripod and a tripod stay 113)

On the basis of example 1, the following were changed: the periphery of the main connecting piece 11 is provided with a cavity, a conversion piece is arranged in the cavity, the conversion piece is connected with a pull rope or a pull wire 113 which can control the lug tongue 62 or the unlocking piece, namely, the button 17 is pressed to drive the conversion piece and the pull wire 113 to retract and unlock the lug tongue 62 of the telescopic lock device 8; in addition, since the wire 113 can be bent, the bellows can be opened at an angle.

Example 5: (Another structure of the Lock device 8 for the tripod and the tripod extension tube)

On the basis of example 1, the following were changed: the inner pipe and the outer pipe of each group 6 do not need to be provided with the locking hole 22, the inner side of the inner pipe is provided with a rack, the end part of the lug tongue 62 is provided with at least one tooth groove matched with the rack, and the pressing piece 17 is required to be pressed all the time during operation until the required position is reached, and the hand can be loosened for positioning. The rest is basically the same as embodiment 1, and is not described herein again.

Example 6: the tetrapods are used on uneven ground:

as shown in fig. 5, the tetrapod of the present invention can also adjust the telescopic pin 37 under a certain set of telescopic tubes like a tripod and also can release the locking button 26 under the outer tube 6, adjust the length of the inner tube of the telescopic tube as required, and then lock the locking button 26, so as to realize that the tetrapod is suitable for various uneven ground.

The function and operation of the preferred embodiment of the present invention are as follows;

1. the four-foot stand extension tube is opened at any angle:

referring to fig. 3, if the lock button 336 is opened by folding and rotating the lock, the lock handle 777 is pulled out to drive the lock handle 666 or pull the lock handle 666 arbitrarily, so as to open the four sets of telescopic tubes at the same time and at the same time.

2. The automatic extension and automatic positioning of the four-foot-frame extension tube:

referring to fig. 2, the petaloid step ear bases 229 are held by both hands, the thumb of both hands symmetrically presses the petaloid pressing piece ears 228, and the tetrapods are lifted up, so that each set of telescopic tubes is lowered to the right position by partial pressure and gravity of the telescopic tubes.

3. The automatic stretching, automatic positioning and angle opening of the four-foot stand extension tube are as follows:

referring to fig. 4, if the lock button 336 is opened by folding and self-locking, the lock head 777 is pulled out to drive the lock handle 666 or pull the lock handle 666 arbitrarily to open the four sets of telescopic tubes at the same time and at the same angle, based on the above 2.

4. The four-leg telescopic tube is extended out and the telescopic tube opened at an angle is retracted rapidly and limited automatically:

referring to fig. 1, firstly, one hand tilts the four-leg stand and lifts up the two telescopic tubes or lifts up the four-leg stand, the other hand presses down the locking knob 777 to drive the locking knob 666 or presses down the locking knob 666 to fold the angle of the telescopic tubes, then the thumbs of the two hands symmetrically press the petal-shaped pressing piece ears 228, and meanwhile, the main connecting piece 11 is pressed to enable each group of telescopic tubes to retract upwards to the right position by the reaction force of the ground, and the automatic position limitation can be realized.

5. Folding the four foot stands:

(1) if each set of extension tubes is not extended, as shown in fig. 1, the locking handle 777 can be pressed down directly to drive the locking handle 666 or the locking handle 666 can be pressed down to fold each set of extension tubes simultaneously; after being folded, the locking button 336 can be rotated to synchronously and automatically lock the four groups of extension tubes.

(2) If each set of telescopic tubes has been extended and angularly opened, the specific operation is as described in 4 above.

6. Opening and folding the tripod:

the operation process is not much different from the four-leg frame operation process, and the lock handle 777 or the lock handle 666 can be directly pulled out to open the telescopic pipes at the same angle by combining the functions and operations of the embodiment shown in fig. 12 and the previous embodiment; with three petal-shaped button lugs 228, two button lugs 228 are pressed or the button 17 is pressed symmetrically and the above-described partial operations are performed. And will not be described in detail herein.

It should be noted that, during the operation of the above-mentioned embodiment, if the lock handle 666 or the lock head handle 777 needs to be pulled out or partially pulled out, the lock knob 338 can be used to lock the middle tube 13 and the lock handle 666 can be used to lock the middle telescopic tube 16, otherwise, the operation is reversed. There is generally no need to pull out the middle telescopic tube 16 and to lock the middle tube 13 as long as the equipment on the spider or tripod is not very heavy.

It is also to be understood that other embodiments and functional operations are described and illustrated in the accompanying drawings. For example: compared with the load bearing of the existing tripod extension tube, the load bearing of the extension tube is obviously improved; and tripod-related embodiments and functional operations; still other embodiments and functional operations will not be described in detail herein.

Claims

1. The utility model provides a four-legged frame or tripod of quick flexible location and convenient opening which characterized in that: it includes by outer tube (6), an at least section inner tube, at least one flexible locking device (8) and adapter sleeve (9) respectively constitute at least three groups flexible pipe, still include main union piece (11) and well pipe (13) or well flexible pipe (16), adapter sleeve (9) with main union piece (11) are articulated to be connected outer tube (6) or the inner tube, main union piece (11) cup joint well pipe (13), main union piece (11) or well pipe (13) have cup jointed according to piece (17), according piece (17) with leave the stroke space of pressing between main union piece (11).

2. A rapid telescoping positioning and easy opening tetrapod or tripod according to claim 1 wherein: the outside cover of outer tube (6) is equipped with the gloves, outer tube (6) cup joints the inner tube, the inner tube is including inner tube (18) and at least a lesson go up inner tube (19) down, it cup joints to go up inner tube (19) the inside of outer tube (6), inner tube (18) cup joints down go up the inside of inner tube (19), go up inner tube (19) with the upper portion of lower inner tube (18) all is provided with telescopic lock device (8), the flexible pipe is four groups or three groups.

3. A rapid telescopically positioning and easy opening tetrapod or tripod according to claim 1 or 2, wherein: the clamping device is characterized in that clamping holes (21) are respectively formed in two sides of the outer pipe (6), locking hole openings (22) are respectively formed in the pipe walls of the outer pipe (6) and one side of the bottom of the upper inner pipe (19) or racks are arranged in the outer pipe (6) and the inner pipe and are electrodeless telescopic rods, locking holes A (23) are symmetrically formed in the pipe walls of the bottoms of the locking hole openings (22), a plurality of clamping sleeves (25) with openings and external threads and conical surfaces at the bottoms are arranged in the locking holes A (23), locking buttons (26) with internal threads and conical surfaces at the bottoms are arranged outside the clamping sleeves (25), the conical surfaces of the clamping sleeves (25) are matched with the conical surfaces of the locking buttons (26), positioning tables A (27) are symmetrically formed in the outer sides of the clamping sleeves (25), the positioning tables A (27) are clamped in the locking holes A (23) or the upper portions of the clamping sleeves (25) are fixedly connected with the lower portions of the outer pipe (6) in a pressing mode, locking hole B (28) have been seted up to the symmetry on the pipe wall of inner tube (18) bottom down, the bottom of inner tube (18) is provided with thread bush (29) of taking the hole down, location platform B (32) have been seted up to thread bush (29) outside symmetry, location platform B (32) joint is in locking hole B (28), the bottom of thread bush (29) is provided with takes step and internal screw thread knob (33), thread bush (29) with the outside of knob (33) is provided with adjusting knob (36), thread bush (29) with the inside of knob (33) is provided with telescopic foot nail (37) or the bottom of adjusting knob (36) is provided with the detachable gyro wheel.

4. A rapid telescoping positioning and easy opening tetrapod or tripod according to claim 2 wherein: the telescopic lock device (8) comprises a lock body A (38), a lock body B (39), a U-shaped unlocking piece A (58), a U-shaped unlocking piece B (61), an ear tongue (62) and an elastic piece, wherein the U-shaped unlocking piece A (58) is arranged in the lower inner tube (18), the U-shaped unlocking piece B (61) is arranged in the upper inner tube (19), a step body is arranged at the lower part of the lock body A (38) and the lock body B (39), the body of the lock body A (38) and the body of the lock body B (39) are matched with the inner wall of the outer tube (6) and the inner wall of the inner tube, two bayonets are symmetrically arranged on the tube body at one end part of the inner tube and are sleeved on the step body, C-shaped rings (66) provided with bosses (63) are clamped in the bayonets, openings are symmetrically arranged at two sides of the lower part of the lock body A (38) and the lock body B (, the lock body A (38) and the lock body B (39) are openly provided with two concave holes and two step notches (69) of guide grooves (68), the side edge of the upper part of the lock body A (38) is provided with a flange (73), the bottom surface of the lock body A (38) and the lock body B (39) is provided with a notch, the middle part and the edge part of the lock body A (38) and the lock body B (39) are both provided with through holes, the two sides of the middle through hole are symmetrically provided with limit openings (77), the two sides of the U-shaped unlocking piece A (58) and the U-shaped unlocking piece B (61) are both provided with a group of inclined plane blocks (78) or are both symmetrically provided with two groups of inclined planes, the upper part and the outer side of the bottom part of the U-shaped unlocking piece A (58) and the U-shaped unlocking piece B (61) are both provided with buckles, the upper part of the U-shaped unlocking piece A (58) is provided, threaded hole is provided with iron rod (82) or iron bar of screw thread rigid coupling, the through-hole has been seted up on the upper portion of U type unlocking piece B (61), the lower part of ear tongue (62) is the cylinder, the middle part of ear tongue (62) is U type mouth, lug (83) of counter bore have been seted up to the both sides face symmetry of ear tongue (62), at least a set of inclined plane has been seted up to the both sides of U type mouth or this up-and-down symmetry has seted up at least a set of inclined plane, guide block (86) have been seted up to the base symmetry of U type mouth, U type unlocking piece A (58) card is inserted in spacing mouthful (77), ear tongue (62) are place in step notch (69) just guide block (86) with guide slot (68) cooperate, two shrinkage pools with all be provided with the elastic component between ear tongue (62).

5. A rapidly telescopically positionable and conveniently openable tetrapod or tripod according to claim 2 or 3 or 4, wherein: the pipe above the outer pipe (6) is internally provided with a sleeve part (87), two sides of the sleeve part (87) are provided with positioning tables C (88), the positioning tables C (88) are matched with the clamping holes (21), the upper part of the sleeve part (87) is provided with guide holes (89), the lower part of each guide hole (89) is provided with an opening, one side part of each opening is provided with a limiting hole (91) and a through hole (92), the limiting hole (91) and the through hole (92) are internally hinged with a position changing part (93), one end part of each position changing part (93) is provided with a guide port (96), the lower part of each through hole (92) is provided with a notch or a slotted hole, a permanent magnet (97) or an electromagnet is arranged in each notch, the other side part of each opening is provided with a notch, step clamps (98) are arranged on two sides of each notch, and one end part of each guide hole (89) is provided with a pressing, The other end of the pressing piece (99) is a cylinder and penetrates through the middle of the opening, a buckle is symmetrically arranged on one side of the pressing piece (99) and matched with the step clamp (98), a guide opening (111) is arranged on the other side of the pressing piece (99), a pull wire (113) is arranged in the guide opening (96) and the guide opening (111), a fixing head is fixedly arranged at one end of the pull wire (113) and is pressed against the upper portion of the guide opening (111), the other end of the pull wire (113) is arranged in the upper inner tube (19) and penetrates through the lock body B (39) with a through hole to be connected with the convex block (79) with a notch, a positioning hole (116) is arranged at the bottom of the pressing piece (99), and the lower inner tube (18) drives the iron rod (82) to retract to the proper position and then penetrates into the positioning hole (116).

6. A rapid telescoping positioning and easy opening tetrapod or tripod according to claim 1 wherein: shaft hole or eccentric shaft hole (117) have been seted up to the side of adapter sleeve (9), incision (118) have been seted up to the higher authority of adapter sleeve (9), tangent plane (220) have all been seted up with the outside to the interior survey of incision (118), ear seat (221) have been seted up to the interior survey of adapter sleeve (9) periphery, the screw hole has been seted up to the side of ear seat (221), be provided with the screw in the screw hole, adapter sleeve (9) with outer tube (6) or press the rigid coupling by bolted connection or point between the inner tube.

7. A rapidly telescopically positionable and conveniently openable tetrapod or tripod according to claim 5 or 6, wherein: four or three engaging lugs (223) with connecting holes (222) are symmetrically arranged below the periphery of the main connecting piece (11), the engaging lugs (223) are embedded in the notches (118), the upper parts of the engaging lugs (223) are provided with pressing holes (226) with steps, elastic pieces are arranged in the pressing holes (226), the pressing holes (226) are opposite to the guide holes (89), at least three pressing heads (227) are uniformly arranged below or on the side surface of the periphery of the pressing piece (17), a step-shaped cylinder is arranged below the pressing heads (227) and penetrates through the pressing holes (226) and is flush with the bottom surface of the engaging lugs (223) under the action of the elastic pieces, and the eccentric shaft hole (117) is hinged with the connecting holes (222) through bolts or rivets.

8. A rapidly telescopically positionable and conveniently openable tetrapod or tripod according to claim 6 or 7, wherein: four or three pressing lug (228) which are in a petal shape in overlooking are symmetrically arranged on the side surface of the periphery of the pressing piece (17), four or three step lug seats (229) which are in a petal shape in overlooking are arranged between the side surface of the periphery of the main connecting piece (11) and the connecting lug (223) and matched with the pressing lug (228), a locking button (336) at least provided with three locking heads (333) below is arranged between the main connecting piece (11) and the middle pipe (13) or a locking sleeve at least provided with three locking heads (333) below and clockwise rotates from large to small is arranged, at least two U-shaped openings are arranged on the locking sleeve, locking buttons which are mutually clamped are arranged on the U-shaped openings, at least two locking strips (337) are arranged on the upper surface of the main connecting piece (11), the lug seats (221) are matched with the locking heads (333), the bottom of the periphery of the locking button (336) is pressed on the upper surface of the inner peripheral part of the pressing piece (17), lock card button (336) the higher authority be provided with locking button (338) of two inclined planes of seting up at least on the inner periphery, at least three buckle and the interior peripheral looks joint of main connecting piece (11) have been seted up below locking button (338), locking strip (337) with the inclined plane matches and can lock well pipe (13), well higher authority joint or the point of well pipe (13) press the cover (339) that compresses tightly that the rigid coupling has a plurality of opening and screw thread, the higher authority of locking button (338) be provided with compress tightly cover (339) cooperate and can lock the lock of well flexible pipe (16) is (666), well flexible pipe (16) include well pipe (13), the lock be provided with the higher authority of (666) with connect button (667) that well flexible pipe (16) are connected, interior thread is seted up to connect button (667), female connection has A (668), the external screw thread of diameter 3/8 inches is seted up to a tip of connector A (668), the external screw thread of diameter 3/8 and 1/4 inches is seted up to another tip of connector A (668), it cup joints step shrinkage pool (669) and the internal screw thread lock head of diameter 3/8 to set up above connecting button (667) (777), the lock head can lock or unblock (777) connector A (668), the cushion has set firmly on the lock head (777).

9. A rapid telescoping positioning and easy opening tetrapod or tripod according to claim 1 wherein: a connecting seat (778) and a connecting cover (779) are arranged below the middle pipe (13), the connecting seat (778) or the connecting cover (779) is fixedly connected below the middle pipe (13) in a point pressing mode, the connecting seat (778) and the connecting cover (779) are connected through at least one screw, a threaded hole is formed in the middle of the connecting seat (778) and the connecting cover (779), a connecting head B (886) is arranged in the threaded hole, and the connecting head B (886) can be connected with a holder or a single-foot telescopic rod; the periphery of the middle pipe (13), the connecting seat (778) and the connecting cover (779) is symmetrically provided with four or three openings, the joint part of the connecting seat (778) and the connecting cover (779) is provided with four or three shaft seats (888), the middle part or the middle upper part of the outer pipe (6) is provided with a hinged locking ring (889) or the outer side of the outer pipe (6) is fixedly provided with a connecting block with holes, the hinged part of the locking ring (889) or the connecting block is respectively provided with four or three openings and four or three shaft seats (888) internally provided with four or three connecting rods (999) which are mutually connected and can rotate, and when the middle pipe (13) or the middle telescopic pipe (16) moves up and down, the four or three connecting rods (999) can be linked and drive four or three groups of the synchronous telescopic pipes to be opened outwards and also can be synchronously folded.

10. A rapidly telescopically positionable and conveniently openable tetrapod or tripod according to claim 4, wherein: the outer periphery of the main connecting piece (11) is provided with a cavity, a conversion piece is arranged in the cavity, and the conversion piece is connected with a pull rope capable of controlling the lug tongue (62) or the unlocking piece.