CN217329262U

CN217329262U - Portable tripod

Info

Publication number: CN217329262U
Application number: CN202221034246.7U
Authority: CN
Inventors: 肖宗旺
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-08-30
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses a portable tripod, include: the support legs are respectively embedded with at least one section of support leg, and the first to third support legs and the support legs in the first to third support legs can be folded inwards to form a compact hollow cylindrical body after being combined. In some of these embodiments, the support legs are 1/3 hollow rings in central section and "brackets" in transverse section. The central shaft tube is nested in the connecting assembly, the first supporting leg, the second supporting leg, the third supporting leg and the supporting legs inside the first supporting leg, the third supporting leg and the supporting legs inside the third supporting leg are folded inwards and combined to form a compact hollow cylindrical body, the hollow cylindrical body can be in compact fit with the central shaft tube, and the space utilization rate is maximized. Therefore, the utility model provides a portable tripod is whole small in size very after accomodating, and is very portable, can put into the pocket even.

Description

Portable tripod

Technical Field

The utility model relates to a tripod especially relates to a handy tripod.

Background

Tripods are conventionally known as a common support structure that uses three support legs to provide a stable and reliable support platform for other equipment. While one of the most common applications is as a stand for a camera or the like, tripods have many potential applications. For example, tripods may also be used to support laser sights for surveying, cameras for photography, telescopes for sky viewing, and the like.

In order to facilitate carrying, the tripod generally has a folding structure, but in the prior art, a large space exists between three folded supporting legs of the tripod and the central axis tube, so that the size of the folded tripod is still large, and the tripod is still inconvenient to carry.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a tripod which is portable and small in size.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a portable tripod comprising: coupling assembling, first to third supporting leg, central siphon, the head end of supporting leg with coupling assembling swivelling joint, the inside at least a lesson supporting leg of each nestification of supporting leg, first to third supporting leg and inside supporting legs separately can enclose into the hollow columnar body of compactness after inwards folding up the fit, the central siphon nestification in the coupling assembling, first to third supporting leg and inside supporting legs separately enclose into the hollow columnar body of compactness after inwards folding up the fit with central siphon compact fit. Here the spatial shape of hollow cylindrical body be with central siphon assorted, first to third supporting leg and central siphon have reached the maximize after the tripod is accomodate space utilization, very compact, from this, the embodiment of the utility model provides an in a portable tripod after accomodating whole small in size, very portable.

Preferably, the support legs have a central section of 1/3 hollow ring shape, whereby three such support legs and a central shaft tube can be formed in a compact space.

Preferably, the support leg includes a pair of side walls, an upper arc-shaped wall and a lower arc-shaped wall, which enclose an annular tube body, whereby three such support legs and a central axis tube can be a compact space.

Further, in order to enhance the structural strength of the support leg and the internally nested support foot, the side wall of the support leg comprises an upper side wall and a lower side wall, and each pair of side walls are enclosed into a bracket shape in a pairwise opposite mode. The bracket shape of the utility model can be similar to the bracket shape, the bracket shape or other similar variants, because the upper and lower openings of the bracket shape are smaller than the largest straight meridian in the bracket shape, the supporting leg and the inner nesting supporting leg can not be separated from the side wall when stretching.

Optionally, every two adjacent lower side walls of the first to third support legs are mutually matched after being folded inwards and combined, and at the moment, the space utilization rate is highest.

Optionally, according to different requirements and in order to reduce weight, the first to third support legs are folded inwards and combined, and a certain interval is reserved between every two adjacent lower side walls.

Preferably, the connecting assembly comprises a connecting base, a locking knob and a locking ring, the connecting base is circular, three base heads protruding outwards and at least one locking threaded hole are formed in the outer portion of the connecting base, the locking threaded hole is in threaded connection with the locking knob, and the locking ring is coaxial with the connecting base. The head end of supporting leg includes the connector, the connector with but the rotatable switching of pedestal head. It can be understood that, in the mechanical field, the connector with the rotatable switching mode of base head is many, for example, respectively be provided with a coaxial base shaft hole on base both sides limit, be equipped with a base axle in the base shaft hole the inside connecting hole that is provided with of connector, the inside connecting hole of connector is coaxial with the base shaft hole, and the base pivot passes the inside connecting hole of connector and base shaft hole and makes the head end and the connection base rotatable coupling of first to third supporting leg, and here does not exemplify one by one. The central siphon nested in the coupling assembling, the central siphon can immovably be fixed in the coupling assembling, also can remove different rigidity in the coupling assembling, the locking ring includes locking arch, half opening of locking and the full opening of locking, the locking arch is coaxial with the locking screw hole, reciprocates as needs during the central siphon, unclamp the locking knob, then reciprocates the central siphon to required position, screws up the locking knob, and the locking knob can inwards extrude the locking arch this moment, the locking ring tightens up and fixes the central siphon motionless. There are many ways to achieve the fixing of the connecting assembly to the bottom bracket tube, which are not illustrated here.

Preferably, in order to stabilize the tripod, the portable tripod further comprises a support fixing device, wherein the support fixing device comprises three pairs of support rails, three pairs of support rods and a support connector, the three pairs of support rails are respectively installed at the lower ends of the two upper side walls of the first to third supporting legs, the three pairs of support rods are respectively installed on the three pairs of support rails in a sliding manner, at least one end of each support rod is not separated from the support rail, and the other ends of the three pairs of support rods are respectively installed on the support connector in a rotating manner. It will be apparent to those skilled in the art that the three pairs of support rails may be mounted on the lower ends of the upper sidewalls of the first to third support legs in various ways, such as directly bonding with strong glue, and may be physically inserted by a plug, and further, the three pairs of support rails may be integrally formed with the lower ends of the upper sidewalls of the first to third support legs, which are not illustrated herein.

Furthermore, the inside cylinder cavity that is of support track, in order to let the tripod can fix different angle of opening when the expansion, the support track outside is provided with the rectangular opening that the width is less than cylinder cavity diameter, rectangular opening be suitable for with the cradling piece cooperation, the tripod is when the expansion promptly, the one end of cradling piece can be in support track different positions department is fixed, and then realizes different angle of opening, the arch can prevent the one end of cradling piece slides from top to bottom after fixed.

Further, the support connector comprises a support disc and three convex claws, the three convex claws are arranged outside the support disc, included angles between every two convex claws are 120 degrees, two included angles at the tail ends of the convex claws are openings of 120 degrees, spherical cavities are arranged inside the openings, two ends of the support rod are convex spheres, and the spherical cavities are suitable for being rotatably connected with the convex spheres at the other end of the support rod. In order to prevent the convex sphere at the other end of the support rod from falling off, the sphere diameter of the convex sphere is larger than the width of the opening, and the convex sphere at the other end of the support rod can rotate up and down along the opening in the spherical cavity.

In a further scheme, the bracket connector further comprises a bracket shaft, the center of the bracket disc is a hollow hole, the upper end of the bracket shaft is of a threaded structure, and the upper end of the bracket shaft is in threaded connection with the lower end of the middle shaft tube to play a role in fixing. The middle part of the support shaft is rotatably connected with the central hollow hole of the support disc, the middle part of the support shaft is provided with an annular clamping groove, and the annular clamping groove limits the support shaft to move up and down, namely the support shaft can only do rotary motion. The lower end of the support shaft is provided with the clamping shaft and the round top, and the lower end of the support shaft can be connected with the mounting hole in the bottom of the tripod head through the clamping shaft and the round top.

Further, the support plate further comprises a clamping protrusion, and the clamping protrusion is matched with the supporting legs to prevent the supporting legs from sliding and sliding out when the portable tripod support is in the storage state.

Preferably, the holder rail has a certain elasticity so that one end of the holder bar can smoothly pass through the protrusions on both sides of the elongated opening at the lower end of the holder rail when sliding up and down, and the protrusions can fix one end of the frame bar when there is no artificial external force.

Optionally, the central siphon is the single tube, and in order to make things convenient for fast loading and unloading cloud platform, the central siphon upper end is equipped with card axle and calotte, the central siphon lower extreme is equipped with the screw hole, and the central siphon can link to each other with cloud platform bottom mounting hole through card axle and calotte.

Optionally, in order to lengthen the length of the middle shaft tube, at least one middle shaft sleeve is sleeved in the middle shaft tube, the middle shaft tube and the middle shaft sleeve are connected in a telescopic manner between every two adjacent middle shaft tubes, a threaded hole is formed in the lower end of the middle shaft sleeve, a clamping shaft and a dome are arranged at the upper end of one innermost middle shaft sleeve, and the innermost middle shaft sleeve is connected with the mounting hole in the bottom of the holder through the clamping shaft and the dome.

In a preferable scheme, n sections of supporting legs are sequentially nested in the supporting legs, and n is a positive integer greater than or equal to 3.

Furthermore, the tail end of the supporting leg is provided with a limiting hole. The 1 st section is provided with locating hole and positioner respectively to (n-1) th section supporting foot head end, positioner includes base, positioning spring, location axle and location track, the location track is installed in the base and with the locating hole is with the axle center, positioning spring set up in middle part in the location track, the location axle sets up respectively the positioning spring both sides, the location axle can the location track go up remove and with the locating hole is with the axle center, location axle middle part is provided with convex fixture block, of course, the location track also can with base integrated into one piece, even the base with the supporting legs head end also can integrated into one piece, in addition, the base plays fixed connection simultaneously the effect of the 1 st section to (n-1) th section supporting foot head end.

Section 1 is provided with spacing hole and solid fixed ring respectively to section (n-2) support leg tail end, gu fixed ring fixed mounting in section 1 is to section (n-2) support leg tail end, gu fixed ring is until fixed connection section 1 is to section (n-2) support leg tail end effect. When the 1 st section of supporting leg is stretched out, the location axle of the 1 st section of supporting leg is in get into under the positioning spring effect the spacing hole of supporting leg tail end, at this moment, the 1 st section of supporting leg location axle quilt the spacing hole of the 1 tail end of supporting leg blocks, and the 1 st section of supporting leg is fixed and can't stretch out and draw back again. When the support legs from the 2 nd section to the (n-1) th section are extended, the corresponding positioning shafts enter the corresponding positioning holes under the action of the corresponding positioning springs, for example, the positioning shafts of the support legs from the 2 nd section enter the positioning holes of the support legs from the 1 st section under the action of the positioning springs of the support legs from the 2 nd section, at this time, the positioning shafts of the support legs from the 2 nd section are clamped by the limiting holes of the support legs from the 1 st section, the support legs from the 2 nd section are fixed and cannot be extended or retracted any more, the fixing rings at the tail ends of the support legs from the 1 st section simultaneously stabilize the support legs from the 1 st section to the 2 nd section, the extending process of the support legs from the 3 rd section to the (n-1) th section and the corresponding fixing rings are repeated, and so on.

The limiting circle is arranged at the tail end of the (n-1) th supporting foot, and the limiting circle can prevent the head end of the nth supporting foot from being separated from the tail end of the (n-1) th supporting foot. The base from the 2 nd section to the (n-1) th section of the supporting foot head end is provided with an unlocking hole, and the unlocking hole on the base from the 2 nd section to the (n-1) th section of the supporting foot head end is respectively suitable for being matched with a clamping block protruding from the middle part of a positioning shaft from the 1 st section to the (n-2) th section of the supporting foot head end. The head end of the nth section of supporting leg is provided with an unlocking block, the unlocking block is provided with an unlocking hole, and the unlocking hole in the unlocking block is suitable for being matched with a clamping block protruding from the middle of the positioning shaft at the head end of the (n-1) th section of supporting leg. The nth section supporting leg is provided with a fastening device which is suitable for being matched with the inner wall of the (n-1) th section supporting leg, namely, the nth section supporting leg can be tightly fixed together through the inner wall of the fastening device at any position of the (n-1) th section supporting leg. And a foot cap is arranged at the tail end of the nth section of supporting foot.

Furthermore, in order to save limited space, the transverse sections of the supporting feet from the 1 st section to the (n-2) th section are in a bracket shape, namely, the supporting feet from the 1 st section to the (n-2) th section are composed of a pair of brackets with the transverse sections in the bracket shape.

In a further scheme, all the brackets in the transverse cross section from the support leg of the 1 st section to the support leg of the (n-2) th section have the same height, namely the height of the brackets is not gradually reduced layer by layer like a circular sleeve, so that the strength of each support leg can be ensured to the maximum extent, and in addition, the height refers to the height of a single bracket. The widths of the two sides of the supporting feet from the 1 st section to the (n-2) th section are gradually reduced layer by layer, so that the two adjacent sections can be nested together.

Further, the (n-1) th supporting leg is tubular, but the transverse cross sections on both sides of the (n-1) th supporting leg are still in a bracket shape, so that the strength of the (n-1) th supporting leg can be enhanced.

In this description, when n is 3, the 1 st to (n-2) th sections are only the 1 st section, and the 2 nd to (n-1) th sections are only the 2 nd section.

In an optional scheme, n sections of supporting feet are sequentially nested inside the supporting leg, and n is 2, that is, two sections of supporting feet are sequentially nested inside the supporting leg 1.

Furthermore, the tail end of the supporting leg is provided with a limiting hole. The 1 st section supporting leg head end is provided with locating hole and positioner respectively, positioner includes base, positioning spring, location axle and location track, the location track install in the base and with the locating hole is with the axle center, positioning spring set up in middle part in the location track, the location axle sets up respectively the positioning spring both sides, the location axle can move on the location track and with the locating hole is with the axle center, location axle middle part is provided with convex fixture block.

When the 1 st section of supporting leg is stretched out, the positioning shaft enters the limiting hole under the action of the positioning spring, at the moment, the 1 st section of supporting leg positioning shaft is clamped by the limiting hole at the tail end of the supporting leg, and the 1 st section of supporting leg is fixed and cannot stretch out and draw back any more. The limiting ring is arranged at the tail end of the 1 st section of supporting foot and can prevent the head end of the nth section of supporting foot from being separated from the tail end of the (n-1) th section of supporting foot. The head end of the nth section of supporting leg is provided with an unlocking block, the unlocking block is provided with an unlocking hole, and the unlocking hole in the unlocking block is suitable for being matched with a clamping block protruding from the middle of the positioning shaft at the head end of the (n-1) th section of supporting leg.

The nth section supporting leg is provided with a fastening device which is suitable for being matched with the inner wall of the (n-1) th section supporting leg, namely, the nth section supporting leg can be tightly fixed together through the inner wall of the fastening device at any position of the (n-1) th section supporting leg. And a foot cap is arranged at the tail end of the nth section of supporting foot.

Further, the (n-1) th section of supporting leg is tubular.

In another alternative, n sections of supporting feet are nested inside the supporting leg, wherein n is 1, that is, one section of supporting foot 3 is nested inside the supporting leg 1. Limiting ring is arranged at the tail end of the supporting leg. The nth section of supporting leg is provided with a fastening device, and the fastening device is suitable for being matched with the inner wall of the supporting leg. The tail end of the nth section of supporting leg is provided with a leg cap.

In the foregoing preferred scheme and/or an optional scheme, the fastening device includes a fastening shaft, a fastening spring and a fastening head, a raised snap ring is arranged in the middle of the fastening shaft, two elastic clamping pieces are arranged at one end of the fastening head in a protruding manner, a round hole is formed in the center of the fastening head, and a round hole is formed in the center of the unlocking block.

The fastening shaft is nested in the nth section of supporting foot, and the fastening shaft can move and rotate in the nth section of supporting foot. The foot cap is fixedly connected with one end of the fastening shaft. The other end of the fastening head is fixedly connected with the head end of the nth section of supporting foot. The other end of the fastening shaft is rotatably connected with the central round hole of the unlocking block. The fastening spring is nested in the fastening shaft, one end of the fastening spring is fixed on the raised snap ring, and the other end of the fastening spring is fixed at the other end of the fastening head. The fastening spring is always in a stretched state. The outside of the unlocking block is in slidable fit with the two elastic clamping pieces, when the outside of the unlocking block slides to the tail ends of the two elastic clamping pieces, the elastic clamping pieces are fastened and extruded with the inner walls of the (n-1) th section supporting feet, namely, the nth section supporting feet are fixed and cannot move at the moment, when the outside of the unlocking block slides to the head ends of the two elastic clamping pieces, the elastic clamping pieces and the inner walls of the (n-1) th section supporting feet can easily slide, so that the nth section supporting feet can move at any position of the inner walls of the (n-1) th section supporting feet, namely, the nth section supporting feet and the (n-1) th section supporting feet can be adjusted to different supporting heights, and the applicability of the tripod is improved.

In the foregoing preferred and/or optional one, the fastening device of the nth section of supporting leg may be implemented by directly designing the nth section of supporting leg as a micro-elliptical tube, and providing a micro-elliptical limiting ring at the tail end of the (n-1) th section of supporting leg, where the micro-elliptical tube of the nth section of supporting leg and the micro-elliptical tube of the nth section of supporting leg may be locked, fastened, or unlocked by rotating left and right. In order to unlock the (n-1) th section of support, a round hole is formed in the center of the unlocking block, and the head end of the nth section of support leg is rotatably connected with the round hole in the center of the unlocking block.

Further, it is protruding to be provided with a card in the foot cap, nth section supporting foot tail end is provided with a recess, fastening spring is tensile state all the time, works as the piece outside of separating the locking slides when two elastic clamping piece are terminal, protruding with the recess of nth section supporting foot tail end closely cooperates, works as the piece outside of separating the locking slides during two elastic clamping piece head ends, protruding the outwards throw off of card in the foot cap the recess and the rotation of nth section supporting foot tail end leave the notch.

In one preferred embodiment of the foregoing, the portable tripod further comprises a positioning hole guiding system, the positioning hole guiding system is disposed in the supporting leg and the 1 st to (n-1) th supporting legs nested inside in sequence, and when the 1 st to (n-1) th supporting legs are extended, the positioning hole guiding system respectively guides the positioning shaft into the limiting hole under the action of the positioning spring.

In a further scheme, locating hole guide system includes notch piece and protruding piece, the notch piece nestification is fixed in respectively supporting leg tail end both sides with 1 st section to (n-2) th section supporting foot tail end both sides, the recess orientation of notch piece coupling assembling, protruding piece fixed mounting respectively in 1 st section to (n-1) th section supporting foot in the both sides of positioner's base, the protruding orientation of protruding piece the foot cap. When the supporting legs from the 1 st section to the (n-1) th section are extended, the convex sheets of the supporting legs from the 1 st section to the (n-1) th section are respectively matched with the concave sheets of the supporting legs and the supporting legs from the 1 st section to the (n-2) th section and guide the corresponding positioning shafts to enter the corresponding limiting holes under the action of the corresponding positioning springs. For example, when the 1 st section of supporting leg is unfolded, the convex sheet of the 1 st section of supporting leg is matched with the concave sheet of the supporting leg and guides the positioning shaft of the 1 st section into the limiting hole of the supporting leg under the action of the positioning spring of the convex sheet, when the 2 nd section of supporting leg is unfolded, the convex sheet of the 2 nd section of supporting leg is matched with the concave sheet of the 1 st section of supporting leg and guides the positioning shaft of the 2 nd section into the limiting hole of the 1 st section of supporting leg under the action of the positioning spring of the convex sheet, and the rest is done by analogy.

In a further another scheme, the positioning hole guide system is a track groove, the track groove is respectively arranged on two sides of the supporting leg and on two inner sides of the 1 st section to the (n-2) th section supporting foot, one end of the track groove is respectively terminated on the limiting holes on two sides of the tail end of the supporting leg and on two sides of the tail end of the 1 st section to the (n-2) th section supporting foot, and the other end of the track groove is respectively terminated on two sides of the head end of the supporting leg and on two sides of the head end of the 1 st section to the (n-2) th section supporting foot.

In an alternative embodiment of the foregoing, the portable tripod further includes a positioning hole guiding system, the positioning hole guiding system is disposed in the supporting leg and the 1 st supporting leg nested inside the supporting leg, and when the 1 st supporting leg is extended, the positioning hole guiding system guides the positioning shaft into the limiting hole under the action of the positioning spring.

In a further scheme, locating hole guide system includes notch piece and bellying piece, the notch piece nestification is fixed in supporting leg tail end both sides, the recess orientation of notch piece coupling assembling, the bellying piece respectively fixed mounting be in the both sides of positioner's in the 1 st section supporting leg base, the protruding orientation of bellying the foot cap. When the 1 st section of supporting leg is unfolded, the convex sheet of the 1 st section of supporting leg is matched with the groove sheet of the supporting leg and guides the corresponding positioning shaft to enter the corresponding limiting hole under the action of the corresponding positioning spring.

In a further another scheme, the positioning hole guide system is a track groove, the track groove is arranged on two sides of the supporting leg, one end of the track groove is terminated in the limiting holes on two sides of the tail end of the supporting leg, and the other end of the track groove is terminated on two sides of the head end of the supporting leg. When the section 1 supporting foot is unfolded, the positioning shaft of the section 1 supporting foot reaches and enters the corresponding limiting hole under the guiding of the track groove and the action of the positioning spring.

Compared with the prior art, use the utility model provides a pair of portable tripod has following beneficial effect:

1. this portable tripod, compact structure accomodates the back volume small and exquisite, and is very portable.

2. This portable tripod because compact structure, first to third supporting leg can be accomodate the back and can regard as the handle, and the central siphon can overlap many sets of sleeve pipes and independently stretch out and draw back and use as from the rapping bar.

3. This portable tripod, central siphon can dismantle fast with the coupling assembling reality, and the central siphon can regard as alone from rapping bar to use after the dismantlement.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of a three-dimensional structure of a portable tripod according to the present invention.

Fig. 2 is a schematic side view of any supporting leg and its own internal supporting leg after being stored.

Fig. 3 is a schematic view of the bottom view structure of any supporting leg of the present invention.

Fig. 4 is an exploded view of any of the support legs and part of the bracket fixing device according to the present invention.

Fig. 5 is a schematic view of a three-dimensional structure of any supporting leg and its own internal supporting leg after being stored.

Fig. 6 is a schematic view of a portable tripod in a rear view structure.

Fig. 7 is an explosion diagram of the connection assembly according to the present invention.

Fig. 8 is a schematic view of the top structure of the connection assembly of the present invention.

Fig. 9A is a schematic view of the three pairs of support rods and the support connectors of the present invention when they are unfolded.

Fig. 9B is a schematic view of the three pairs of supporting rods and supporting connectors of the present invention when they are unfolded.

Fig. 9C is a schematic view of the three pairs of support rods and the support connectors of the present invention showing a three-dimensional structure when they are unfolded.

Fig. 10 is a schematic perspective view of a bracket connector (including a bracket shaft) according to the present invention.

Fig. 11 is a schematic view of the structure of the bracket connector of the present invention.

Fig. 12 is a schematic view of a three-dimensional structure of a portable tripod (a central axis tube is not shown) according to the present invention after being stored.

Fig. 13 is a schematic view of the unfolding process (before unfolding) of the portable tripod according to the present invention.

Fig. 14 is a schematic view showing an unfolding process (during unfolding) of the portable tripod according to the present invention.

Fig. 15 is a schematic view of an unfolding process (after unfolding) of the portable tripod according to the present invention.

Fig. 16 is a schematic side view of any supporting leg and its own internal supporting leg after being unfolded.

Fig. 17A is an enlarged view of the area a in fig. 16.

Fig. 17B is a side view schematic of the structure of fig. 17A.

Fig. 17C is a schematic perspective view of fig. 17A.

Fig. 17D is an exploded schematic view of fig. 17A.

FIG. 18 is a schematic view of the three-dimensional structure of the supporting leg from the 1 st to the (n-2) th section, wherein n is a positive integer not less than 3.

Fig. 19 is an exploded view of the nth and (n-1) th supporting legs according to the present invention.

Fig. 20A is a schematic structural view of the nth and (n-1) th supporting legs according to the present invention when locked.

Fig. 20B is a schematic structural view of the nth and (n-1) th supporting legs according to the present invention when unlocked.

Fig. 21 is a partial sectional view of the nth and (n-1) th supporting legs according to the present invention when locked.

Fig. 22 is an enlarged view of region a in fig. 21.

Fig. 23A is the supporting legs of the present invention before being stored and unlocked.

Figure 23B is a partial cross-sectional view of the support legs before being stored and unlocked.

Fig. 24A is the supporting legs accomodates unblock back structure sketch map.

Fig. 24B is a partial cross-sectional view of the support foot after being stored and unlocked.

Fig. 25 is a cross-sectional view of any of the support legs and their respective support legs of the present invention after being stored.

Fig. 26 is an enlarged view of the area a in fig. 25.

Fig. 27 is an enlarged view of region B in fig. 25.

Fig. 28A is a schematic view of a three-dimensional structure of a portable tripod according to the present invention after being stored.

Fig. 28B is a middle transverse sectional view of the portable tripod according to the present invention after being stored.

Fig. 28C is a schematic view of the cross section of the supporting leg of the portable tripod according to the present invention in the form of "bracket".

Fig. 29 is a schematic structural view of the portable tripod supporting leg of the present invention after the supporting leg is completely unfolded and the central shaft tube is completely unfolded.

Fig. 30 is a schematic structural view of the portable tripod supporting leg of the present invention after the supporting leg is partially unfolded and the central shaft tube is completely unfolded.

Fig. 31 is a schematic structural view of the portable tripod supporting leg of the present invention after the supporting leg is unfolded and the central shaft tube is retracted.

Fig. 32 is a schematic view of the structure of the portable tripod supporting leg and its respective internal supporting leg completely unfolding the cradle head upside down.

Fig. 33 is a schematic view of the structure of the portable tripod supporting leg and its respective supporting leg part unfolding cradle head hanging upside down.

Fig. 34 is a portable tripod supporting leg and its respective internal supporting leg, which are used to store the tripod head upside down.

Fig. 35 is a schematic structural view of a positioning hole guiding system of a portable tripod according to the present invention.

Description of reference numerals:

support leg 1

A connector 11, an upper arc wall 12, a lower arc wall 13, a side wall 14,

A stopper hole 101, a connection hole 111, an upper side wall 141, a lower side wall 142,

Connecting assembly 2

A connecting base 21, a locking knob 22, a locking ring 23,

A base head 211, a base shaft hole 212, a base shaft 213, a locking screw hole 214, a locking projection 231, a locking half-opening 232, a locking full-opening 233,

Supporting legs 3,

The 1 st section supporting leg 31, the 2 nd section supporting leg 32, the 3 rd section supporting leg 33, the 4 th section supporting leg 34, the 5 th section supporting leg 35,

Limiting hole 301, fixing ring 302, limiting ring 303, groove 350, foot cap 351,

A clamping bulge 3510,

A central shaft tube 4,

A middle shaft sleeve 41,

A dome 401, a chuck shaft 402,

A fixing device 5,

A bracket track 51, a bracket rod 52, a bracket connector 53,

A long strip opening 511, an outlet 512, a mounting opening 513, a convex ball 521, a bracket disc 531, three convex claws 532, a bracket shaft 533, a,

A protrusion 5110, a snap protrusion 5311, an opening 5321, a spherical cavity 5322, a thread structure 5331, a snap shaft 5332, a dome 5333,

A positioning device 6,

A base 61, a positioning spring 62, a positioning shaft 63, a positioning rail 64,

A positioning hole 601, an unlocking hole 610, an unlocking block 611, a round hole 612, a fixture block 631,

A convex piece 71, a concave piece 72, a track groove 73,

A fastening device 8,

A fastening shaft 81, a fastening spring 82, a fastening head 83,

A snap ring 811, a round hole 830, an elastic clip 831,

A head 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1, the embodiment of the present invention provides a portable tripod, which includes a connection assembly 2, first to third support legs 1 and a central shaft tube 4. The head end of the supporting leg 1 is rotatably connected with the connecting component 2, and at least one section of supporting foot 3 is nested in each supporting leg 1. As shown in fig. 6 and 12, the first to third support legs 1 and their respective internal support legs 3 can be folded inwards to form a compact hollow cylindrical body. As shown in fig. 13, the bottom bracket tube 4 is nested in the connecting assembly 2, and the first to third support legs 1 and their respective internal support legs 3 are folded inwards to form a compact hollow cylindrical body, which can be compactly matched with the bottom bracket tube 4. The technical field technical personnel understand very easily that, the hollow column body the spatial shape here be with central siphon 4 assorted, first to third supporting leg 1 and central siphon 4 have reached the maximize at tripod storage back space utilization, and is very compact, from this, the embodiment of the utility model provides a portable tripod is whole small in size after accomodating, very portable.

In the present embodiment, as shown in fig. 3, 4 and 5, the support leg 1 has a central section of 1/3 hollow ring shape. The support leg 1 includes a pair of side walls 14, an upper arc wall 12 and a lower arc wall 13, and the pair of side walls 14, the upper arc wall 12 and the lower arc wall 13 enclose an annular tube. As can be easily understood by those skilled in the art, the central section of the support leg of a common tripod is of a circular ring type, i.e. an O-shaped support leg and a central shaft tube, which are difficult to enclose a compact space, but in the present embodiment, the central section of the support leg 1 is 1/3 hollow rings, and three such support legs 1 and central shaft tubes can form a compact space.

In order to increase the structural strength of the support leg 1 and the internally nested support foot 3, as shown in fig. 3 and 4, the side walls 14 of the support leg 1 comprise an upper side wall 141 and a lower side wall 142, and each pair of side walls 14 enclose a bracket shape in pairs. It will be appreciated that the bracket shape described in this embodiment may be similar to "()", "< >" or other similar variations, since the upper and lower openings of the bracket are smaller than the maximum vertical dimension of the bracket, and the support leg 1 and the inner nested support foot 3 will not separate from the side wall 14 during telescoping.

In the present embodiment, as shown in fig. 6, after the first to third supporting legs 1 are folded inwards and combined, two adjacent lower sidewalls 142 are engaged with each other, and at this time, the space utilization rate is the highest. Of course, alternatively, in another embodiment, according to different requirements and to reduce weight, the first to third supporting legs 1 may be folded inwards to form a combined body, and then a certain interval may be provided between two adjacent lower side walls 142, for example, the central section of the supporting leg 1 is 1/4 hollow ring-shaped, and three such 1/4 hollow ring-shaped supporting legs 1 enclose a certain interval hollow column-shaped body.

In this embodiment, as shown in fig. 7 and 8, the connection assembly 2 includes a connection base 21, a locking knob 22 and a locking ring 23, the connection base 21 is annular, three base heads 211 protruding outwards and at least one locking screw hole 214 are formed on the outside of the connection base 21, the locking screw hole 214 is in threaded connection with the locking knob 22, and the locking ring 23 is coaxial with the connection base 21. As shown in fig. 2 and 7, the head end of the supporting leg 1 includes a connector 11, and the connector 11 is rotatably connected to the base head 211. It can be understood that, in the mechanical field, the connection head 11 and the base head 211 can be rotatably connected in many ways, for example, as shown in fig. 1 and fig. 7, a coaxial base shaft hole 212 is respectively disposed on two side edges of the base head 211, a base shaft 213 is disposed in the base shaft hole 212, a connection hole 111 is disposed inside the connection head 11, the connection hole 111 inside the connection head 11 is coaxial with the base shaft hole 212, and the base shaft 213 penetrates the connection hole 111 inside the connection head 11 and the base shaft hole 212 to rotatably connect the head ends of the first to third support legs 1 with the connection base 21, which is not illustrated here. The central siphon 4 nest in coupling assembling 2, central siphon 4 can immovably be fixed in coupling assembling 2, also can move different rigidity in the coupling assembling 2, as shown in fig. 1 and 7, locking ring 23 includes locking arch 231, locking half-opening 232 and locking full-opening 233, locking arch 231 is coaxial with locking screw hole 214, reciprocates when needs central siphon 4, unclamps locking knob 22, then reciprocates central siphon 4 to required position, screws up locking knob 22, and locking knob 22 can inwards extrude locking arch 231 this moment, locking ring 23 tightens up and fixes central siphon motionlessly. There are many ways to achieve the fixing of the coupling assembly 2 to the bottom bracket tube, which are not illustrated here.

In a preferred embodiment, as shown in fig. 1, in order to stabilize the tripod, the portable tripod further includes a support fixing device 5, and as shown in fig. 4, 9A, 9B and 9C, the support fixing device 5 includes three pairs of support rails 51, three pairs of support rods 52 and a support connector 53, the three pairs of support rails 51 are respectively mounted at the lower ends of the upper side walls 141 of the first to third support legs 1, the three pairs of support rods 52 are respectively slidably mounted on the three pairs of support rails 51, at least one end of each support rod 52 is not separated from the support rail, and the other ends of the three pairs of support rods 52 are respectively rotatably mounted on the support connector 53. It will be apparent to those skilled in the art that the three pairs of support rails 51 may be mounted on the lower ends of the upper sidewalls of the first to third support legs 1 in various ways, such as directly using a strong glue, etc., or may be inserted by using a physical structure, such as a plug method, and further, the three pairs of support rails 51 may be integrally formed with the lower ends of the upper sidewalls of the first to third support legs 1, which is not illustrated herein.

As shown in fig. 3, 4 and 5, the inside of the support rail 51 is a cylindrical cavity, in order to allow the tripod to fix different opening angles during the unfolding, an elongated opening 511 with a width smaller than the diameter of the cylindrical cavity is provided at the outer side of the support rail 51, at least one pair of protrusions 5110 is provided at two sides of the elongated opening 511 at the lower end of the support rail 51, the elongated opening 511 is adapted to cooperate with the support rod 52, that is, when the tripod is unfolded, one end of the support rod 52 can be fixed at different positions of the support rail 51, so as to realize different opening angles, and the protrusions 5110 can prevent one end of the support rod 52 from sliding up and down after being fixed. As shown in fig. 3, in order to prevent the holder bar 52 from being separated from the holder rail, the holder rail 51 is provided at the lower end thereof with an outlet 512 having a minimum diameter smaller than that of the cylindrical cavity. As shown in FIG. 4, for the convenience of installation, the inner side of the lower end of the support rail 51 is provided with an installation opening 513 having a minimum diameter greater than or equal to the diameter of the cylindrical cavity, the support rod 52 can be installed into the support rail 51 through the installation opening 513 in advance, and then the support rail 51 is installed at the lower ends of the two upper side walls 141 of the support leg 1, with the installation opening 513 closed.

As shown in fig. 10 and 11, the bracket connector 53 includes a bracket disc 531 and three claws 532, the three claws 532 are disposed outside the bracket disc 531, an included angle between every two claws is 120 degrees, two openings 5321 with an included angle of 120 degrees are disposed at the tail ends of the claws 532, a spherical cavity 5322 is disposed inside the openings 5321, as shown in fig. 4, two ends of the bracket rod 52 are protruding spheres 521, and the spherical cavity 5322 is adapted to be rotatably connected with the protruding spheres 521 at the other end of the bracket rod 52. It can be understood that, in order to prevent the protruding ball 521 at the other end of the holder lever 52 from falling off, the ball diameter of the protruding ball 521 is larger than the width of the opening 5321, and the protruding ball 521 at the other end of the holder lever 52 can rotate up and down along the opening 5321 in the spherical cavity 5322.

As shown in fig. 10, the bracket connector 53 further includes a bracket shaft 533, the center of the bracket plate 531 is a hollow hole, the upper end of the bracket shaft 533 is a threaded structure 5331, and the upper end of the bracket shaft 533 is in threaded connection with the lower end of the middle shaft tube 4 to fix the bracket. The middle part of the support shaft 4 is rotatably connected with the central hollow hole of the support disc 531, the middle part of the support shaft 533 is provided with an annular clamping groove (not shown in the figure), and the annular clamping groove limits the support shaft 533 to move up and down, namely the support shaft 533 can only rotate. The lower end of the support shaft 533 is provided with a clamping shaft 5332 and a dome 5333. As shown in fig. 32, 33 and 34, the lower end of the support shaft 533 can be connected to the mounting hole at the bottom of the tripod head 9 through the clip shaft 5332 and the dome 5333, so that the clip shaft 5332 and the dome 5333 are disposed at the lower end of the support shaft 533, and the use situation of the tripod is expanded, for example, the camera can shoot in a low angle in an inverted manner.

As shown in fig. 10, 11 and 28A, the stand plate 531 further includes a locking protrusion 5311, and in the stored state of the portable tripod stand according to the present embodiment, the locking protrusion 5311 is engaged with the support leg 3 to prevent the support leg 3 from sliding out.

Preferably, the holder rail 51 has a certain elasticity so that one end of the holder bar 52 smoothly passes through protrusions on both sides of the elongated opening 511 at the lower end of the holder rail 51 when sliding up and down, the protrusions fixing one end of the holder bar 52 when there is no external force.

A brief description will be given below of a deployment process of the portable tripod stand fixing apparatus 5 of the present embodiment:

first, as shown in fig. 13 and 28A, the tripod is in a storage state, the support rod 52 (not shown) is in the support rail 51, and the support shaft 533 is screwed with the lower end of the bottom bracket tube 4;

then, as shown in fig. 14, the support shaft 533 is unscrewed from the screw thread at the lower end of the bottom bracket tube 4, and the support rod 52 is pulled out to a certain position;

finally, as shown in fig. 1, the supporting leg 1 is opened, and meanwhile, the other end of the support rod 52 is fixedly connected with the lower end of the bottom bracket tube 4 through the support shaft 533 in a threaded manner again, and at this time, different opening angles of the supporting leg 1 can be realized by adjusting the position of the long opening 511 at the lower end of the support rail 51 at one end of the support rod 52.

In an optional scheme, the central shaft tube 4 is a single tube, and in order to facilitate rapid mounting and dismounting of the holder 9, the upper end of the central shaft tube 4 is provided with a clamping shaft 402 and a dome 401, the central shaft tube 4 can be connected with a mounting hole at the bottom of the holder 9 through the clamping shaft 402 and the dome 401, and the lower end of the central shaft tube 4 is provided with a threaded hole, that is, the threaded hole can be in threaded connection with the upper end of the support shaft 533.

Of course, as shown in fig. 29, in order to lengthen the length of the bottom bracket tube 4, in another alternative, at least one middle shaft sleeve 41 is sleeved in the bottom bracket tube 4, the bottom bracket tube 4 and the middle shaft sleeve 41 are connected in a telescopic manner between two adjacent pairs, the bottom end of the innermost middle shaft sleeve 41 is provided with a threaded hole, the upper end of the innermost middle shaft sleeve 41 is provided with a clamping shaft 402 and a dome 401, and the innermost middle shaft sleeve 41 is connected with the mounting hole at the bottom of the pan/tilt head 9 through the clamping shaft 402 and the dome 401. It should be noted that the tripod head 9 may be a photographic tripod head 9 disclosed in chinese utility model patent ZL 201620760201.6.

In this embodiment, n sections of supporting legs 3 are sequentially nested in the supporting leg 1, where n is a positive integer greater than or equal to 3, that is, at least three sections of supporting legs 3 are sequentially nested in the supporting leg 1. For convenience of describing the relationship between the support leg 1 and the internal support leg 3, the number of the support leg 3 sections is represented by "n".

In one specific embodiment, n is 5, and as shown in fig. 15 and 16, the 1 st to nth supporting legs are the 1 st, 2 nd, 3 rd, 4 th and 5

th supporting legs

31, 32, 33, 34 and 35, respectively. The following describes the specific structure and telescopic principle of the supporting leg 1 and the supporting legs from the 1 st section to the nth section according to the present embodiment.

Firstly, the specific structure and the extending process of the supporting leg 1 and the supporting legs from the 1 st section to the (n-1) th section in the embodiment are described:

as shown in FIG. 13, the tail end of the supporting leg 1 is provided with a limiting hole 101. As shown in fig. 17A, 17B, 17C and 17D, the first ends of the supporting legs of the 1 st to (n-1) th sections are respectively provided with a positioning hole 601 and a positioning device 6, and the positioning device 6 includes a base 61, a positioning spring 62, a positioning shaft 63 and a positioning rail 64. The location track 64 is installed in base 61 and with the locating hole 601 is with the axle center, positioning spring 62 set up in middle part in the location track 64, location axle 63 sets up respectively positioning spring 62 both sides, location axle 63 can move on the location track 64 and with the locating hole 601 is with the axle center, location axle 63 middle part is provided with convex fixture block 631. Of course, it is easily understood by those skilled in the art that the positioning rail 63 can be formed integrally with the base 61, even the base 61 and the head end of the supporting foot can be formed integrally, and in addition, the base 61 also serves to fixedly connect the head ends of the supporting feet of the 1 st section to the (n-1) th section. As shown in fig. 17A, 17B, 17C, 17D and 18, the tail ends of the supporting legs of the 1 st to (n-2) th sections are respectively provided with a limiting hole 301 and a fixing ring 302, the fixing ring 302 is fixedly mounted at the tail ends of the supporting legs of the 1 st to (n-2) th sections, and the fixing ring 302 acts on the tail ends of the supporting legs of the 1 st to (n-2) th sections by being fixedly connected. When the 1 st section of supporting leg is stretched out, the location axle 63 of the 1 st section of supporting leg is in get into under the effect of positioning spring 62 the spacing hole 101 in 1 tail end of supporting leg, at this moment, the 1 st section of supporting leg location axle 63 by the spacing hole 101 in 1 tail end of supporting leg blocks, and the 1 st section of supporting leg is fixed and can't stretch out and draw back again. When the support legs of the sections 2 to (n-1) are extended, the corresponding positioning shaft 63 enters the corresponding positioning hole 301 under the action of the corresponding positioning spring 62, for example, the positioning shaft 63 of the support leg of the section 2 enters the positioning hole 301 of the support leg of the section 1 under the action of the positioning spring 62 of the support leg of the section 2, at this time, the positioning shaft 63 of the support leg of the section 2 is clamped by the limiting hole 301 of the support leg of the section 1, the support leg of the section 2 is fixed and cannot be extended again, the fixing ring 302 at the tail end of the support leg of the section 1 simultaneously stabilizes the support leg of the section 1 and the support leg of the section 2, the extending process from the section 3 to the support leg of the section (n-1) and the action of the corresponding fixing ring 302 are repeated, and so on.

As shown in fig. 19, 20A and 20B, a limiting ring 303 is disposed at the tail end of the (n-1) th supporting foot, and the limiting ring 303 can prevent the head end of the n-1 th supporting foot from being separated from the tail end of the (n-1) th supporting foot.

In order to solve the problem that the supporting legs of the 1 st to (n-1) th sections are fixed when being extended and cannot be stretched, the supporting legs of the 2 nd to n th sections of the present embodiment are designed as follows:

as shown in fig. 19, fig. 20A, fig. 20B, fig. 21 and fig. 22, the base 61 at the head end of the support leg of the second to (n-1) th sections is provided with an unlocking hole 610, and the unlocking holes 610 of the base 61 at the head end of the support leg of the second to (n-1) th sections are respectively adapted to cooperate with a fixture block 631 protruding from the middle of the positioning shaft 63 at the head end of the support leg of the first to (n-2) th sections. The head end of the nth section of supporting leg is provided with an unlocking block 611, the unlocking block 611 is provided with an unlocking hole 610, and the unlocking hole 610 on the unlocking block 611 is suitable for being matched with a clamping block 631 protruding from the middle part of the positioning shaft 63 at the head end of the (n-1) th section of supporting leg.

As shown in fig. 19, 20A, 20B, 21 and 22, the nth section supporting leg is provided with a fastening device 8, the fastening device 8 is suitable for being matched with the inner wall of the (n-1) th section supporting leg, namely, the nth section supporting leg can be tightly fixed together through the inner wall of the fastening device 8 at any position of the (n-1) th section supporting leg. The tail end of the nth section of supporting leg is provided with a leg cap 351. As shown in fig. 25, 26 and 27, in order to save space, the unlocking holes 610 on the base 61 and the positioning rails 64 are arranged in a vertically staggered manner, and the positioning rails 64 on the base 61 are not on the same axis along the supporting leg direction.

Further, as shown in fig. 19, 20A, 20B, 21 and 22, the fastening device 8 includes a fastening shaft 81, a fastening spring 82 and a fastening head 83, a raised snap ring 811 is disposed in the middle of the fastening shaft 81, two elastic clips 831 are protruded from one end of the fastening head 83, a circular hole 830 is disposed in the center of the fastening head 83, and a circular hole 612 is disposed in the center of the unlocking block 611.

As shown in fig. 19, the fastening shaft 81 is nested in the nth section of supporting leg, and the fastening shaft 81 can move and rotate in the nth section of supporting leg. The foot cap 351 is fixedly connected with one end of the fastening shaft 81. As shown in fig. 20A and 20B, the other end of the fastening head 83 is fixedly connected to the head end of the nth section supporting leg. The other end of the fastening shaft 81 is rotatably connected with the central circular hole 612 of the unlocking block 611. As shown in fig. 21 and 22, the fastening spring 82 is nested in the fastening shaft 81, one end of the fastening spring 82 is fixed to the raised snap ring 811, and the other end of the fastening spring 82 is fixed to the other end of the fastening head 83. The tightening spring 82 is always in tension. The outside of the unlocking block 611 is slidably engaged with the two elastic clamping pieces 831. As shown in fig. 20A, when the outer 611 side of the unlocking block slides to the ends of the two elastic clamping pieces 831, the elastic clamping pieces 831 are tightly pressed against the inner walls of the (n-1) th section supporting leg, that is, the nth section supporting leg is fixed and immovable at this time, as shown in fig. 20B, when the outer 611 side of the unlocking block slides to the ends of the two elastic clamping pieces 831, the elastic clamping pieces 831 and the inner walls of the (n-1) th section supporting leg can easily slide, so that the movement of the nth section supporting leg at any position of the inner walls of the (n-1) th section supporting leg is realized, that is, the nth section supporting leg and the (n-1) th section supporting leg can be adjusted to different supporting heights, and the applicability of the tripod is improved.

Of course, there are many ways to realize the movement of the nth section of supporting foot at any position of the inner wall of the (n-1) th section of supporting foot, for example, the fastening device 8 of the nth section of supporting foot can be realized by directly designing the nth section of supporting foot as a micro-elliptical tube and providing the micro-elliptical limiting ring 303 at the tail end of the (n-1) th section of supporting foot, and the micro-elliptical tube of the nth section of supporting foot and the micro-elliptical limiting ring 303 at the tail end of the (n-1) th section of supporting foot can be locked and fastened or unlocked by rotating left and right. In order to unlock the (n-1) th section of support, a circular hole 612 is formed in the center of the unlocking block 612, and the head end of the nth section of support leg is rotatably connected with the circular hole 612 in the center of the unlocking block.

Further, as shown in fig. 19, a locking protrusion 3510 is disposed in the foot cap 351, a groove 350 is disposed at the tail end of the nth section of supporting foot, the fastening spring 82 is in a stretching state all the time, when the outer side of the unlocking block 611 slides to the tail ends of the two elastic clamping pieces 831, the locking protrusion 3510 in the foot cap is tightly matched with the groove 350 at the tail end of the nth section of supporting foot, at this time, under the stretching force of the fastening spring 82, the unlocking block 611 stays at the tail ends of the two elastic clamping pieces 831 all the time, so that the nth section of supporting foot is fixed and cannot move for a long time. When the nth section of supporting leg needs to be moved, the outside of the unlocking block 611 slides to the head ends of the two elastic clamping pieces 831, the clamping protrusion 3510 in the leg cap 351 is outwards disengaged from the groove 350 at the tail end of the nth section of supporting leg and simultaneously rotates away from the groove opening, at this time, the clamping protrusion 3510 in the leg cap 351 abuts against the port at the tail end of the nth section of supporting leg, at this time, the nth section of supporting leg can be easily moved to any required position, when the nth section of supporting leg is moved to another position, the leg cap 351 is rotated again to enable the clamping protrusion 3510 in the leg cap to be aligned to the groove 350 at the tail end of the nth section of supporting leg, then the hand is released, and the clamping protrusion 3510 in the leg cap is tightly matched with the groove 350 at the tail end of the nth section of supporting leg under the stretching effect of the fastening spring 82, so that the long-time fixation of the other position is realized.

As shown in fig. 29 to 34, the supporting legs of a portable tripod can expand multiple different heights, the nth section of supporting leg with different supporting heights can be adjusted out to (n-1) th section of supporting leg, the applicability of tripod is improved, the required height can be adjusted out on uneven ground, in addition, both ends can all be connected with the cloud platform about the central siphon, the applicability of tripod has further been improved.

The storage principle of the section 1 to the section n support legs in the present embodiment is briefly described as follows:

as shown in fig. 29 to 34, the support legs of the 1 st section to the nth section according to the present embodiment may be completely unfolded, or may be partially unfolded, and when being folded, they are first folded from the rearmost section and then folded one by one. The unlocking hole 610 arranged on the unlocking block 611 on the nth section supporting leg and the unlocking hole 610 on the base 61 at the head end of the second to (n-1) th section supporting legs sequentially unlock the first to (n-1) th section supporting legs respectively. The unlocking principle of each section is the same, and it is only exemplified here how the unlocking hole 610 on the section 3 supporting leg unlocks the head end of the section 2 supporting leg and the tail end of the section 1 supporting leg in a fixed state during storage: as shown in fig. 23A and 23B, when the section 3 supporting foot is about to be stored to the end, the bevel edge of the unlocking hole 610 on the section 3 supporting foot contacts with the bevel edge of the fixture block 631 on the section 2 supporting foot, and along with the further inward storage of the section 3 supporting foot, the bevel edge of the unlocking hole 610 on the section 3 supporting foot and the bevel edge of the fixture block 631 on the section 2 supporting foot pass through the interaction force, the positioning shaft 63 on the section 2 supporting foot moves inward along the axial direction and gradually separates from the positioning hole 301 at the tail end of the section 1 supporting foot, as shown in fig. 24A and 24B, when the section 3 supporting foot is further stored inward, the positioning shaft 63 on the section 2 supporting foot completely separates from the positioning hole 301 at the tail end of the section 1 supporting foot along the shaft, and at this time, the section 2 supporting foot can be stored in the section 1 supporting foot. As can be easily understood by those skilled in the art, for the convenience of description, the limiting hole 101 at the tail end of the supporting leg 1 and the limiting hole 301 at the tail end of the supporting leg from the 1 st section to the (n-2) th section have the same function, and thus the unlocking principle is the same.

In order to save limited space, as shown in fig. 28B and 28C, the transverse cross sections of the supporting feet from the 1 st section to the (n-2) th section are in the shape of brackets, i.e., the supporting feet from the 1 st section to the (n-2) th section are composed of a pair of brackets with transverse cross sections in the shape of brackets. Since the upper part and the lower part of the bracket are open, the bracket heights of all the transverse cross sections of the supporting feet from the 1 st section to the (n-2) th section are the same, namely the bracket heights are not gradually reduced layer by layer like the diameter of a circular sleeve, so that the strength of each supporting foot can be ensured to the maximum extent, and in addition, the heights refer to the heights of single brackets. The widths of two sides of the supporting feet from the 1 st section to the (n-2) th section are gradually reduced, so that two adjacent sections can be nested together. The (n-1) th supporting leg is tubular, but the transverse sections on both sides of the (n-1) th supporting leg are still in a bracket shape, so that the strength of the (n-1) th supporting leg can be enhanced. As will be readily understood by those skilled in the art, the transverse cross section of the (n-1) th section of the supporting foot can also be directly in a bracket shape, or the (n-2) th section of the supporting foot and the (n-1) th section of the supporting foot can be both in a tubular shape, and even any other section of the supporting foot can be in a tubular shape or in a tubular shape with one section being arranged between the two sections, only the strength and the space saving degree of the supporting foot are different, and the two types of the supporting feet can be in various combinations, which is not illustrated in any way.

In this embodiment, since n is 5, the nth section support leg is the 5 th section support leg, the (n-1) th section support leg is the 4 th section support leg, and the (n-2) th section support leg is the 3 rd section support leg. The utility model discloses it expresses with n because the supporting legs festival number can have multiple combination, and nth festival supporting legs is last festival supporting legs, and (n-1) th festival supporting legs is the second festival supporting legs that counts down, and it is very convenient to express. It should be understood that when n is equal to 3, the 1 st section to the (n-2) th section are only actually the 1 st section, and the 2 nd section to the (n-1) th section are only actually the 2 nd section. In addition, in this description, one end of each support leg 1 and each support foot 3 near the connecting assembly 2 is called a head end, and the other end is called a tail end.

Example 2

The main difference between this embodiment 2 and the above embodiment 1 is that n sections of the supporting legs 3 are nested inside the supporting legs in sequence, where n is 2, that is, two sections of the supporting legs 3 are nested inside the supporting legs 1 in sequence. For convenience of describing the relationship between the support leg 1 and the internal support leg 3, the number of the support leg 3 sections is represented by "n". For the sake of brevity, this embodiment 2 shares the following description with an embodiment of n-5 described in embodiment 1 above:

the supporting leg 1 in the embodiment 2 is the same as the supporting leg 1 in the embodiment 1;

the section 1 supporting leg in the embodiment 2 is the same as the section 4 supporting leg in the embodiment 1;

the support leg of the 2 nd section in this embodiment 2 is the same as the support leg of the 5 th section in the above embodiment 1.

The section 1 to section 3 support legs of one specific embodiment in which n is 5 in the above embodiment 1 are omitted, that is, the portable tripod in this embodiment 2 is described, so that the portable tripod in this embodiment 2 is smaller and lighter, and is mainly suitable for mobile phone photography and the like.

As shown in FIG. 13, the tail end of the supporting leg 1 is provided with a limiting hole 101. As shown in fig. 17A, 17B, 17C and 17D, the 1 st section of supporting leg head end is provided with a positioning hole 601 and a positioning device 6 respectively, the positioning device 6 includes a base 61, a positioning spring 62, a positioning shaft 63 and a positioning rail 64, the positioning rail 64 is installed in the base 61 and coaxial with the positioning hole 601, the positioning spring 62 is disposed in the middle of the positioning rail 64, the positioning shafts 63 are disposed on two sides of the positioning spring 62 respectively, the positioning shaft 63 can move on the positioning rail 64 and coaxial with the positioning hole 601, and a convex fixture block 631 is disposed in the middle of the positioning shaft 63.

When the 1 st section of supporting leg is stretched out, the positioning shaft 63 of the 1 st section of supporting leg enters the supporting leg tail end limiting hole 101 under the action of the positioning spring 62, at the moment, the 1 st section of supporting leg positioning shaft 63 is clamped by the supporting leg tail end limiting hole 101, and the 1 st section of supporting leg is fixed and cannot stretch out and draw back any more. The tail end of the No. 1 supporting leg is provided with a limiting ring 303, and the limiting ring 303 can prevent the head end of the nth supporting leg from being separated from the tail end of the (n-1) th supporting leg. The head end of the nth section of supporting leg is provided with an unlocking block 611, the unlocking block 611 is provided with an unlocking hole 610, and the unlocking hole 610 on the unlocking block 611 is suitable for being matched with a clamping block 631 protruding from the middle part of the positioning shaft 63 at the head end of the (n-1) th section of supporting leg.

As shown in fig. 19, 20A, 20B, 21 and 22, the nth section supporting leg is provided with a fastening device 8, the fastening device 8 is suitable for being matched with the inner wall of the (n-1) th section supporting leg, namely, the nth section supporting leg can be tightly fixed together through the inner wall of the fastening device 8 at any position of the (n-1) th section supporting leg. The tail end of the nth section of supporting leg is provided with a leg cap 351.

The fastening shaft 81 is nested in the nth section of supporting foot, and the fastening shaft 81 can move and rotate in the nth section of supporting foot. The foot cap 351 is fixedly connected with one end of the fastening shaft 81. The other end of the fastening head 83 is fixedly connected with the head end of the nth section of supporting foot. The other end of the fastening shaft 81 is rotatably connected with the central circular hole 612 of the unlocking block 611. The fastening spring 82 is nested in the fastening shaft 81, one end of the fastening spring 82 is fixed on the raised snap ring 811, and the other end of the fastening spring 82 is fixed on the other end of the fastening head 83. The tightening spring 82 is always in tension. The outside of the unlocking block 611 is slidably engaged with the two elastic clamping pieces 831. As shown in fig. 20A, when the outer 611 side of the unlocking block slides to the ends of the two elastic clamping pieces 831, the elastic clamping pieces 831 are tightly pressed against the inner walls of the (n-1) th section supporting leg, that is, the nth section supporting leg is fixed and immovable at this time, as shown in fig. 20B, when the outer 611 side of the unlocking block slides to the ends of the two elastic clamping pieces 831, the elastic clamping pieces 831 and the inner walls of the (n-1) th section supporting leg can easily slide, so that the movement of the nth section supporting leg at any position of the inner walls of the (n-1) th section supporting leg is realized, that is, the nth section supporting leg and the (n-1) th section supporting leg can be adjusted to different supporting heights, and the applicability of the tripod is improved.

Further, as shown in fig. 19, a locking protrusion 3510 is disposed in the foot cap 351, a groove 350 is disposed at the tail end of the nth section of supporting foot, the fastening spring 82 is always in a stretched state, when the outside of the unlocking block 611 slides to the tail ends of the two elastic clamping pieces 831, the locking protrusion 3510 in the foot cap is tightly fitted with the groove 350 at the tail end of the nth section of supporting foot, at this time, under the tensile force of the fastening spring 82, the unlocking block 611 stays at the tail ends of the two elastic clamping pieces 831 all the time, so that the nth section of supporting foot is fixed and cannot move for a long time. When the nth section of supporting leg needs to be moved, the outside of the unlocking block 611 slides to the head ends of the two elastic clamping pieces 831, the clamping protrusion 3510 in the leg cap 351 is outwards disengaged from the groove 350 at the tail end of the nth section of supporting leg and simultaneously rotates away from the groove opening, at this time, the clamping protrusion 3510 in the leg cap 351 abuts against the port at the tail end of the nth section of supporting leg, at this time, the nth section of supporting leg can be easily moved to any required position, when the nth section of supporting leg is moved to another position, the leg cap 351 is rotated again to enable the clamping protrusion 3510 in the leg cap to be aligned to the groove 350 at the tail end of the nth section of supporting leg, then the hand is released, and the clamping protrusion 3510 in the leg cap is tightly matched with the groove 350 at the tail end of the nth section of supporting leg under the stretching effect of the fastening spring 82, so that the long-time fixation of the other position is realized.

In one embodiment, the section (n-1) support leg is tubular. As will be readily understood by those skilled in the art, the transverse cross-section of the (n-1) th section support leg may also be directly "bracketed".

The telescopic principle of the supporting leg 1 and the supporting legs from the 1 st section to the nth section in the embodiment 2 is the same as that of the embodiment 1, and the description is not repeated here.

In this embodiment, since n is 2, the nth section support leg is the 2 nd section support leg, and the (n-1) th section support leg is the 1 st section support leg. The expression of n in the present invention is very convenient. In addition, in this description, one end of each support leg 1 and each support foot 3 near the connecting assembly 2 is called a head end, and the other end is called a tail end.

Example 3

The main difference between this embodiment 3 and the above embodiment 1 is that n sections of the supporting legs 3 are nested inside the supporting legs in sequence, where n is 1, that is, one section of the supporting leg 3 is nested inside the supporting leg 1. For convenience of describing the relationship between the support leg 1 and the internal support leg 3, the number of the support leg 3 sections is represented by "n". For the sake of brevity, this embodiment 3 shares the following description with an embodiment of n-5 described in embodiment 1 above:

the supporting leg 1 in the embodiment 3 is the same as the supporting leg 1 in the embodiment 1;

the nth section supporting leg, namely the 1 st section supporting leg in the embodiment 3 is the same as the 5 th section supporting leg in the embodiment 1;

the section 1 to section 4 supporting legs of one specific embodiment in which n is 5 in the above embodiment 1 are omitted, that is, the portable tripod in this embodiment 2 is described, so that the portable tripod in this embodiment 2 is smaller and lighter, and is mainly suitable for mobile phone photography and the like.

Similar to the tail end of the supporting leg shown in fig. 20A and 20B, the tail end of the supporting leg 1 is provided with a limiting circle 303. The nth section of supporting leg is provided with a fastening device 8, and the fastening device 8 is suitable for being matched with the inner wall of the supporting leg 1. The tail end of the nth section of supporting leg is provided with a leg cap 351.

Further, similar to fig. 19, 20A, 20B, 21 and 22, the fastening device 8 includes a fastening shaft 81, a fastening spring 82 and a fastening head 83, a raised snap ring 811 is disposed in the middle of the fastening shaft 81, two elastic clips 831 are protruded from one end of the fastening head 83, a circular hole 830 is disposed in the center of the fastening head 83, and a circular hole 612 is disposed in the center of the unlocking block 611.

The fastening shaft 81 is nested in the nth section of supporting foot, and the fastening shaft 81 can move and rotate in the nth section of supporting foot. The foot cap 351 is fixedly connected with one end of the fastening shaft 81. The other end of the fastening head 83 is fixedly connected with the head end of the nth section of supporting foot. The other end of the fastening shaft 81 is rotatably connected with the central circular hole 612 of the unlocking block 611. The fastening spring 82 is nested in the fastening shaft 81, one end of the fastening spring 82 is fixed on the raised snap ring 811, and the other end of the fastening spring 82 is fixed on the other end of the fastening head 83. The tightening spring 82 is always in tension. The outside of the unlocking block 611 is slidably engaged with the two elastic clamping pieces 831. Similar to fig. 20A, when the outer 611 side of the unlocking block slides to the ends of the two elastic clamping pieces 831, the elastic clamping pieces 831 are tightly pressed against the inner wall of the supporting leg 1, that is, the nth section of supporting leg is fixed and immovable at this time, similar to fig. 20B, when the outer 611 side of the unlocking block slides to the head ends of the two elastic clamping pieces 831, the elastic clamping pieces 831 can easily slide against the inner wall of the supporting leg 1, so that the movement of the nth section of supporting leg at any position of the inner wall of the supporting leg 1 is realized, that is, the nth section of supporting leg and the supporting leg 1 can be adjusted to different supporting heights, and the applicability of the tripod is improved.

Of course, there are many ways to realize the movement of the nth section of support leg at any position on the inner wall of the support leg 1, for example, the fastening device 8 of the nth section of support leg can be realized by directly designing the nth section of support leg as a micro-elliptical tube and providing the micro-elliptical limiting ring 303 at the tail end of the support leg 1, and the micro-elliptical tube of the nth section of support leg and the micro-elliptical limiting ring 303 at the tail end of the (n-1) th section of support leg can be locked and fastened or unlocked by rotating left and right.

Example 4

On the basis of the structure of the portable tripod in embodiment 1, the portable tripod in embodiment 4 further includes a positioning hole guiding system, the positioning hole guiding system is disposed in the supporting leg and the 1 st to (n-1) th supporting legs sequentially nested inside, and when the 1 st to (n-1) th supporting legs are extended, the positioning hole guiding system respectively guides the positioning shaft 63 to enter the limiting hole 101 and/or the limiting hole 301 under the action of the positioning spring 62. In this embodiment, the pilot hole guide system can prevent the pilot shaft 63 from deviating from the position-limiting hole 101 and/or the position-limiting hole 301 due to misalignment when the 1 st to (n-1) th joint support legs are spread.

In a further aspect, as shown in fig. 4, 17D, 18 and 19, the positioning hole guiding system comprises a groove sheet 72 and a protrusion sheet 71, the groove sheet 72 is respectively fixed on both sides of the tail end of the supporting leg 1 and both sides of the tail end of the supporting legs of the 1 st to (n-2) th sections, the groove of the groove sheet 72 faces the connecting assembly 2, the protrusion sheet 71 is respectively fixed on both sides of the base 61 of the positioning device 6 in the supporting legs of the 1 st to (n-1) th sections, and the protrusion of the protrusion sheet 71 faces the foot cap 351. When the 1 st to (n-1) th supporting feet are unfolded, the convex sheets 71 of the 1 st to (n-1) th supporting feet are respectively matched with the supporting leg 1 and the concave sheets 72 of the 1 st to (n-2) th supporting feet, and the corresponding positioning shafts 63 are guided to enter the corresponding limiting holes 101 and/or 301 under the action of the corresponding positioning springs 62. For example, when the 1 st section of supporting leg is extended, the convex sheet 71 of the 1 st section of supporting leg is matched with the concave groove sheet 72 of the supporting leg 1 and guides the positioning shaft 63 of the 1 st section into the limiting hole 101 of the supporting leg 1 under the action of the positioning spring 62 thereof, when the 2 nd section of supporting leg is extended, the convex sheet 71 of the 2 nd section of supporting leg is matched with the concave groove sheet 72 of the 1 st section of supporting leg and guides the positioning shaft 63 of the 2 nd section into the limiting hole 301 of the 1 st section of supporting leg under the action of the positioning spring 62 thereof, and the like.

In another further scheme, as shown in fig. 35, the positioning hole guiding system is a track groove 73, the track groove 73 is respectively disposed at two sides of the supporting leg 1 and at two inner sides of the supporting legs from 1 st to (n-2) th, one end of the track groove 73 is respectively terminated at the limiting hole 101 at two sides of the tail end of the supporting leg and the limiting hole 301 at two sides of the tail end of the supporting leg from 1 st to (n-2) th, and the other end of the track groove 73 is respectively terminated at two sides of the head end of the supporting leg and at two sides of the head end of the supporting leg from 1 st to (n-2) th. When the 1 st to (n-1) th supporting legs are unfolded, the positioning shafts 63 of the 1 st to (n-1) th supporting legs reach and enter the corresponding limiting holes 101 and/or 301 under the guiding of the track grooves 73 and the action of the positioning springs 62. For example, when the 1 st section of supporting leg is extended, the positioning shaft 63 of the 1 st section of supporting leg reaches and enters the limiting holes 101 at the two sides of the supporting leg 1 under the guiding of the track groove 73 and the action of the positioning spring 62, and when the 2 nd section of supporting leg is extended, the positioning shaft 63 of the 2 nd section of supporting leg reaches and enters the limiting hole 301 of the 1 st section of supporting leg under the guiding of the track groove 73 and the action of the positioning spring 62, and so on.

Of course, the pilot hole guiding system in this embodiment 4 may also be a combination of the above two further solutions, that is, the pilot hole guiding system includes both the above two further solutions.

Example 5

On the basis of the structure of the portable tripod in embodiment 2, the portable tripod in embodiment 5 further includes a positioning hole guiding system, the positioning hole guiding system is disposed in the supporting leg and the 1 st supporting leg sequentially nested inside, and when the 1 st supporting leg is extended, the positioning hole guiding system guides the positioning shaft 63 to enter the limiting hole 101 under the action of the positioning spring 62. In this embodiment, the pilot hole guiding system can prevent the pilot shaft 63 from deviating from the position-limiting hole 101 due to misalignment when the section 1 supporting foot is extended.

In a further aspect, as shown in fig. 4 and 19, the positioning hole guiding system comprises a groove sheet 72 and a protrusion sheet 71, the groove sheet 72 is fixed on two sides of the tail end of the supporting leg 1 in a nesting manner, the groove of the groove sheet 72 faces the connecting assembly 2, the protrusion sheets 71 are respectively fixed on two sides of the base 61 of the positioning device 6 in the supporting leg of the 1 st section, and the protrusion of the protrusion sheet 72 faces the foot cap 351. When the 1 st section supporting leg is unfolded, the convex sheet 71 of the 1 st section supporting leg is matched with the concave sheet 72 of the supporting leg 1 and guides the corresponding positioning shaft 63 to enter the corresponding positioning hole 101 under the action of the corresponding positioning spring 62.

In another further scheme, as shown in fig. 35, the positioning hole guiding system is a rail groove 73, the rail groove 73 is disposed on both sides of the supporting leg 1, one end of the rail groove 73 is terminated at the limiting holes 101 on both sides of the tail end of the supporting leg 1, and the other end of the rail groove 73 is terminated at both sides of the head end of the supporting leg 1. When the 1 st section supporting foot is unfolded, the positioning shaft 63 of the 1 st section supporting foot reaches and enters the corresponding limiting hole 101 under the guiding of the track groove 73 and the action of the positioning spring 62.

Of course, the pilot hole guiding system in this embodiment 5 may also be a combination of the above two further solutions, that is, the pilot hole guiding system includes both the above two further solutions.

Claims

1. A portable tripod, comprising:

the connecting component is connected with the connecting rod,

the head ends of the first to third supporting legs are rotatably connected with the connecting assembly, at least one section of supporting foot is respectively nested in each supporting leg, the first to third supporting legs and the supporting feet in each supporting leg can be folded inwards to form a compact hollow cylindrical body after being combined,

the middle shaft tube is nested in the connecting assembly, and the first to third supporting legs and the supporting legs inside the first to third supporting legs are folded inwards and combined to form a compact hollow cylindrical body in an enclosing mode, and the hollow cylindrical body can be in compact fit with the middle shaft tube.

2. A portable tripod according to claim 1, wherein said support legs are 1/3 hollow rings in central section.

3. A portable tripod according to claim 1, wherein said support leg comprises a pair of side walls, an upper arcuate wall and a lower arcuate wall, said pair of side walls, upper arcuate wall and lower arcuate wall enclosing an annular tube.

4. A portable tripod according to claim 3, wherein the side walls of said support leg comprise an upper side wall and a lower side wall, each pair of side walls being enclosed in pairs in a "bracket" configuration.

5. A portable tripod according to claim 4, wherein said first through third support legs are folded inwardly into a configuration such that adjacent pairs of said lower sidewalls engage one another.

6. A portable tripod according to claim 4, wherein said first to third legs are inwardly folded into a closed configuration with a spacing between adjacent lower sidewalls.

7. A portable tripod according to claim 1,

the connecting assembly comprises a connecting base, a locking knob and a locking ring, the connecting base is circular, three base heads protruding outwards and at least one locking threaded hole are arranged outside the connecting base, the locking threaded hole is in threaded connection with the locking knob, the locking ring is coaxial with the connecting base,

the head end of supporting leg includes the connector, the connector with but the rotatable switching of pedestal head.

8. A portable tripod according to any one of claims 4 to 6, further comprising a support fixing device, said support fixing device comprising three pairs of support rails, three pairs of support rods and a support connector, said three pairs of support rails being respectively mounted on the lower ends of the two upper sidewalls of said first to third support legs, said three pairs of support rods being respectively slidably mounted on said three pairs of support rails and at least one end of each support rod not being separated from the support rail, and said other ends of said three pairs of support rods being respectively rotatably mounted on said support connector.

9. A portable tripod according to claim 8, wherein said support rail has a cylindrical cavity therein, and said support rail has an elongated opening disposed on an outer side thereof, said elongated opening having a width less than the diameter of said cylindrical cavity, said elongated opening being adapted to engage said support bar.

10. A portable tripod according to claim 8, wherein said support connector comprises a support plate and three claws, said three claws are arranged outside said support plate and have an included angle of 120 degrees with each other, two openings having an included angle of 120 degrees are arranged at the ends of said claws, a spherical cavity is arranged inside said openings, two ends of said support rod are provided with convex spheres, and said spherical cavity is adapted to be rotatably coupled with the convex spheres at the other end of said support rod.

11. A portable tripod according to claim 10, wherein the support connector further comprises a support shaft, the support disc has a hollow hole in the center, the upper end of the support shaft has a threaded structure, the upper end of the support shaft is in threaded connection with the lower end of the bottom shaft tube, the middle of the support shaft is rotatably connected with the hollow hole in the center of the support disc, the lower end of the support shaft is provided with a clamping shaft and a dome, and the lower end of the support shaft can be connected with the mounting hole at the bottom of the tripod head through the clamping shaft and the dome.

12. A portable tripod according to claim 11, wherein said frame rails have a certain elasticity.

13. A portable tripod according to claim 1, wherein the bottom bracket tube is a single tube, the upper end of the bottom bracket tube is provided with a shaft clip and a dome, the lower end of the bottom bracket tube is provided with a threaded hole, and the bottom bracket tube can be connected with the mounting hole at the bottom of the tripod head through the shaft clip and the dome.

14. A portable tripod according to claim 1, wherein at least one middle shaft sleeve is sleeved in the middle shaft tube, the middle shaft tube and the middle shaft sleeve are telescopically connected between each two adjacent middle shaft tubes, a threaded hole is formed in the lower end of the middle shaft sleeve, a clamping shaft and a dome are arranged at the upper end of the innermost middle shaft sleeve, and the innermost middle shaft sleeve is connected with the mounting hole in the bottom of the tripod head through the clamping shaft and the dome.

15. A portable tripod according to claim 1, wherein n sections of supporting legs are nested inside the supporting legs in sequence, and n is a positive integer greater than or equal to 3.

16. A portable tripod according to claim 15, wherein:

the tail end of the supporting leg is provided with a limiting hole,

the head ends of the supporting feet from the 1 st section to the (n-1) th section are respectively provided with a positioning hole and a positioning device, the positioning device comprises a base, a positioning spring, a positioning shaft and a positioning track, the positioning track is installed in the base and is coaxial with the positioning hole, the positioning spring is arranged in the middle of the positioning track, the positioning shaft is respectively arranged at two sides of the positioning spring, the positioning shaft can move on the positioning track and is coaxial with the positioning hole, the middle part of the positioning shaft is provided with a convex clamping block,

the tail ends of the supporting feet from the 1 st section to the (n-2) th section are respectively provided with a limiting hole and a fixing ring, the fixing ring is fixedly arranged at the tail ends of the supporting feet from the 1 st section to the (n-2) th section,

when the section 1 supporting leg is unfolded, the positioning shaft of the section 1 supporting leg enters the limiting hole at the tail end of the supporting leg under the action of the positioning spring,

when the section 2 to the section (n-1) support feet are unfolded, the corresponding positioning shaft enters the corresponding positioning hole under the action of the corresponding positioning spring,

the tail end of the (n-1) th supporting foot is provided with a limiting circle,

the base at the head ends of the supporting feet of the sections 2 to (n-1) is provided with an unlocking hole, the unlocking holes on the base at the head ends of the supporting feet of the sections 2 to (n-1) are respectively suitable for being matched with a clamping block which is protruded from the middle part of a positioning shaft at the head ends of the supporting feet of the sections 1 to (n-2),

the head end of the nth section of supporting leg is provided with an unlocking block, the unlocking block is provided with an unlocking hole, the unlocking hole on the unlocking block is suitable for being matched with a clamping block which is protruded from the middle part of the positioning shaft at the head end of the (n-1) th section of supporting leg,

the nth section of supporting leg is provided with a fastening device, the fastening device is suitable for being matched with the inner wall of the (n-1) th section of supporting leg, and the tail end of the nth section of supporting leg is provided with a leg cap.

17. A portable tripod according to claim 1, wherein n sections of said support legs are nested one inside the other, and wherein n is 2.

18. A portable tripod according to claim 17,

the tail end of the supporting leg is provided with a limiting hole,

the head end of the 1 st section of supporting leg is respectively provided with a positioning hole and a positioning device, the positioning device comprises a base, a positioning spring, a positioning shaft and a positioning track, the positioning track is arranged in the base and has the same axle center with the positioning hole, the positioning spring is arranged in the middle of the positioning track, the positioning shaft is respectively arranged at two sides of the positioning spring, the positioning shaft can move on the positioning track and has the same axle center with the positioning hole, the middle part of the positioning shaft is provided with a convex clamping block,

when the 1 st section of supporting foot is unfolded, the positioning shaft enters the limiting hole under the action of the positioning spring,

the tail end of the 1 st section of supporting leg is provided with a limiting ring,

19. A portable tripod according to claim 1, wherein n sections of said support legs are nested inside said support legs, and wherein n is 1.

20. A portable tripod according to claim 19,

the tail end of the supporting leg is provided with a limiting ring,

the nth section of supporting leg is provided with a fastening device which is suitable for being matched with the inner wall of the supporting leg,

and a foot cap is arranged at the tail end of the nth section of supporting foot.

21. A portable tripod according to claim 16 or 18,

the fastening device comprises a fastening shaft, a fastening spring and a fastening head, wherein a raised snap ring is arranged in the middle of the fastening shaft, two elastic clamping pieces are arranged at one end of the fastening head in a protruding mode, a round hole is arranged in the center of the fastening head, a round hole is arranged in the center of the unlocking block, the fastening shaft is nested in the nth section of supporting foot, the fastening shaft can move and rotate in the nth section of supporting foot, the foot cap is fixedly connected with one end of the fastening shaft, the other end of the fastening head is fixedly connected with the head end of the nth section of supporting foot, the other end of the fastening shaft is rotatably connected with the round hole in the center of the unlocking block, the fastening spring is nested in the fastening shaft, one end of the fastening spring is fixed on the raised snap ring, the other end of the fastening spring is fixed at the other end of the fastening head, and the outer side of the unlocking block is in sliding fit with the two elastic clamping pieces, when the outer side of the unlocking block slides to the tail ends of the two elastic clamping pieces, the elastic clamping pieces are fastened and extruded with the inner walls of the (n-1) th section supporting feet, and when the outer side of the unlocking block slides to the head ends of the two elastic clamping pieces, the elastic clamping pieces and the inner walls of the (n-1) th section supporting feet can easily slide.

22. A portable tripod according to claim 16 or 18,

the utility model discloses a locking device, including unblock piece, fastening device, little oval pipe body of nth section supporting leg, little oval pipe body of (n-1) th section supporting leg tail end, the little oval pipe body of nth section supporting leg and the little oval pipe body of nth section supporting leg accessible left and right sides rotation accomplish locking fastening cooperation or unblock sliding fit.

23. A portable tripod according to claim 16, wherein said 1 st to (n-2) th support legs are "bracketed" in transverse cross-section.

24. A portable tripod according to claim 16, wherein all transverse cross-sectional bracket-like brackets of said 1 st to (n-2) th support legs are of the same height.

25. A portable tripod according to any one of claims 15 to 18, wherein said (n-1) th joint support foot is tubular.

26. A portable tripod according to claim 21, wherein a locking protrusion is provided in said foot cap, a groove is provided in said nth section support foot tail end, said fastening spring is always in tension, and when said unlocking block is slid to said two resilient clip ends from the outside, said locking protrusion in said foot cap is disengaged from said groove in said nth section support foot tail end and is rotated away from said groove opening when said locking protrusion in said foot cap is mated with said groove in said nth section support foot tail end and said unlocking block is slid to said two resilient clip head ends from the outside.

27. A portable tripod according to claim 16, further comprising a positioning hole guiding system, said positioning hole guiding system being disposed in said supporting leg and said 1 st to (n-1) th supporting legs nested inside one another, said positioning hole guiding system guiding said positioning shaft into said limiting hole by said positioning spring when said 1 st to (n-1) th supporting legs are extended.

28. A portable tripod according to claim 27, wherein:

the pilot hole guide system comprises a notch piece and a protrusion piece,

the groove sheets are respectively fixed on two sides of the tail end of the supporting leg in an embedded manner and two sides of the tail end of the supporting leg from the 1 st section to the (n-2) th section, the groove of each groove sheet faces the connecting assembly,

the convex sheets are respectively and fixedly arranged on two sides of the base of the positioning device in the supporting feet from the 1 st section to the (n-1) th section, the bulges of the convex sheets face to the foot caps,

when the supporting legs from the 1 st section to the (n-1) th section are unfolded, the convex sheets of the supporting legs from the 1 st section to the (n-1) th section are respectively matched with the supporting legs and the concave sheets of the supporting legs from the 1 st section to the (n-2) th section and guide the corresponding positioning shafts to enter the corresponding limiting holes under the action of the corresponding positioning springs.

29. A portable tripod according to claim 27, wherein said positioning hole guiding system is a track groove, said track groove is respectively disposed at both sides of said supporting leg and at both inner sides of said 1 st to (n-2) th supporting legs, one end of said track groove is respectively terminated at a position limiting hole at both sides of said supporting leg tail end and at both sides of said 1 st to (n-2) th supporting leg tail end, and the other end of said track groove is respectively terminated at both sides of said supporting leg head end and at both sides of said 1 st to (n-2) th supporting leg head ends.

30. A portable tripod according to claim 18, further comprising a pilot hole guide system, said pilot hole guide system being disposed in said support leg and said sequentially nested section 1 support leg, said pilot hole guide system guiding said pilot shaft into said position-limiting hole under the influence of said pilot spring when said section 1 support leg is extended.

31. A portable tripod according to claim 30,

the pilot hole guide system comprises a notch piece and a protrusion piece,

the groove sheets are fixed at two sides of the tail end of the supporting leg in an embedded mode, the grooves of the groove sheets face the connecting assembly,

the convex sheets are respectively and fixedly arranged on two sides of the base of the positioning device in the 1 st section of supporting foot, the bulges of the convex sheets face to the foot caps,

when the section 1 supporting leg is unfolded, the convex sheet of the section 1 supporting leg is matched with the groove sheet of the supporting leg and guides the corresponding positioning shaft to enter the corresponding positioning hole under the action of the corresponding positioning spring.

32. A portable tripod according to claim 30, wherein said locating hole guide system is a track slot, said track slot is disposed on both sides of said support leg, one end of said track slot terminates in a position-limiting hole on both sides of the trailing end of said support leg, and the other end of said track slot terminates on both sides of the leading end of said support leg.