CN220748727U - Photographic support frame and supporting leg thereof - Google Patents

Abstract

The utility model relates to a photographic support frame and a support leg thereof, wherein the support leg comprises a pin assembly and a locking assembly, the pin assembly comprises at least three pins which are sleeved in sequence and can move along the axial direction of the pin assembly, and the circumferential rotation of the adjacent pins is mutually limited; the locking assembly comprises a plurality of locking pieces, each two adjacent pins are provided with the locking pieces, and the locking pieces can limit the corresponding pins to move along the axial direction of the pin assembly; the locking piece comprises a sleeve, a first connecting rod and a pulling buckle, wherein the sleeve and the first connecting rod are enclosed to form an inserting cavity, the sleeve is sleeved on the inserting cavity by corresponding pins so as to limit the relative movement of two adjacent pins, and the pulling buckle can be pulled so as to release the limitation of the expanding of the inserting cavity; wherein any two adjacent wrenches are aligned along the axial direction of the pin assembly. According to the photographic support frame and the support leg thereof, any two adjacent wrenches on the support leg are aligned along the axial direction of the pin assembly, and a user can simultaneously open or lock all wrenches on the support leg to realize synchronous unlocking or locking.

Description

Photographic support frame and supporting leg thereof

Technical Field

The utility model relates to the field of photographic accessories, in particular to a photographic support frame and a support leg thereof.

Background

In general, the help of a photographic foot rest is not used for skill shooting in daily life, the foot rest has the main functions of stabilizing a camera no matter for professional users or amateur users, and the foot rest is flexible and retractable by using a connecting rod mechanism in mechanical principle, so that the foot rest has a compact structure, is flexible to retract and release, and is convenient and reliable. The prior art locking arrangements typically employ cog locks that tend to wear with increased service time. In order to solve the problem, chinese patent document CN215258986U discloses a tripod leg tube connection locking structure, which comprises a plurality of legs, wherein the legs are sleeved with a locking sleeve, each leg comprises a first leg and a second leg, the first leg is provided with a cavity, the second leg is inserted into the cavity of the first leg, the second leg slides and stretches in the cavity, and the second leg is locked on the first leg through the locking sleeve so as to limit the relative movement of the first leg and the second leg; the locking sleeve comprises a sleeve, a spanner buckle and an anti-rotation connecting rod, and the sleeve is provided with an inserting cavity and a ring opening; the spanner is articulated in preventing changeing the connecting rod, prevents changeing the connecting rod and passes the ring mouth position and connect in the sleeve, prevents changeing the connecting rod and pulls the sleeve and make the sleeve warp to adjust the ring mouth interval, thereby change the size of grafting chamber. However, when the number of the pins of the supporting legs is at least three, the tripod leg connecting locking structure needs to consume a large amount of operation time in order to unlock the plurality of groups of two adjacent pins at the same time, and a user needs to pull the pulling buckle one by one, so that the use feeling is poor.

Disclosure of Invention

The utility model provides a photographic support frame and support legs thereof, which are used for solving the problem that the support legs need to be pulled one by one to unlock two adjacent pins.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a support leg, comprising:

the pin assembly comprises at least three pins which are sleeved in sequence, and at least three pins can move along the axial direction of the pin assembly so that the pin assembly can be lengthened or shortened, and the circumferential rotation of the adjacent pins is mutually limited;

the locking assembly comprises a plurality of locking pieces, wherein each locking piece is arranged between every two adjacent pins, and the locking pieces can limit the corresponding pins to move along the axial direction of the pin assembly;

the locking piece comprises a sleeve, a first connecting rod and a pulling buckle, wherein the sleeve is of an open-loop structure and circumferentially limited on the corresponding pins, the sleeve and the first connecting rod are enclosed to form an inserting cavity, the corresponding pins are sleeved in the inserting cavity by the sleeve to limit the relative movement of the two adjacent pins, the pulling buckle is connected with the first connecting rod, and the pulling buckle can be pulled to release the limitation of the expanding of the inserting cavity;

wherein any two adjacent wrenches are aligned along the axial direction of the pin assembly.

In one embodiment, each pin is provided with a first limiting portion, each locking member is provided with a second limiting portion, and the second limiting portions are connected to the first limiting portions to achieve corresponding limiting of circumferential rotation of the pins and the locking members.

In one embodiment, the first limiting portions provided on any two adjacent pins are aligned along the axial direction of the pin assembly.

In one embodiment, one of the first limiting portion and the second limiting portion includes a protruding block, and the other includes a groove, and the protruding block can be embedded into the groove along the axial direction of the pin assembly so as to realize limiting of circumferential rotation of the corresponding pin and the locking member.

In one embodiment, two axially adjacent pins are defined as a first pipe and a second pipe, the pin assembly further comprises a sleeve, the sleeve is sleeved between the first pipe and the second pipe, a notch extending to the edges of two ends of the sleeve along the axial direction is formed in the side wall of the sleeve, the sleeve is sleeved on the first pipe and the sleeve at the same time, and the sleeve can clamp the first pipe and the sleeve at the same time under the action of the spanner.

In one embodiment, the side wall of the first pipe is provided with a third limiting part, the side wall of the sleeve is provided with a fourth limiting part, one of the third limiting part and the fourth limiting part comprises a limiting groove, and the other one of the third limiting part and the fourth limiting part comprises a limiting block, and the limiting block is clamped in the limiting groove to limit the relative movement of the sleeve and the first pipe.

In one embodiment, the side wall of the sleeve is provided with circumferentially arranged protrusions which can abut against the sleeve when the sleeve has a tendency to disengage from the first tube towards the side where the protrusions are located, so that the sleeve cannot disengage from the sleeve.

In one embodiment, the inner wall of the sleeve is provided with a first inner wall surface and a second inner wall surface, the radial dimension of the first inner wall surface is larger than the radial dimension of the second inner wall surface, the radial dimension of the first pipe is larger than the radial dimension of the sleeve, and the first inner wall surface is connected with the first pipe when the sleeve is sleeved on the first pipe and the sleeve, and the second inner wall surface is connected with the sleeve.

In one embodiment, two pins which are axially adjacent are defined as a first pipe and a second pipe, a side wall of the sleeve, which is close to one side of the first connecting rod, is provided with a clearance groove, the clearance groove divides the sleeve into a first end, a second end, a third end and a fourth end which are arranged at intervals, the first end, the second end, the third end and the fourth end are all folded outwards from the end faces of the sleeve, and the first connecting rod is connected with the first end and the second end; the sleeve also comprises a second connecting rod, the opposite ends of the second connecting rod are respectively connected with the third end and the fourth end, and the second connecting rod can limit the relative movement of the sleeve and the first pipe.

The utility model also provides a photographic support frame, comprising:

a mounting base;

the supporting legs are connected with the mounting seat, and the supporting legs are arranged at an included angle along the axial direction.

As can be seen from the technical scheme, the embodiment of the utility model has at least the following advantages and positive effects:

according to the photographing support frame and the support leg thereof, any two adjacent wrenches on the support leg are aligned along the axial direction of the pin assembly, and in a shortened state, a user can simultaneously open or lock all wrenches on the support leg to realize synchronous unlocking and locking without opening or locking the wrenches one by one, so that the use feeling of the user is good.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of a support leg according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the locking member of the support leg of FIG. 1;

FIG. 3 is a schematic view of the first tube of the support leg of FIG. 1;

FIG. 4 is a schematic view of an exploded construction of the first tube, sleeve, stationary tube and second tube of the support leg shown in FIG. 1;

FIG. 5 is a schematic view of the sleeve of the support leg of FIG. 1;

fig. 6 is a schematic view of the whole structure of the photographing support device of the present utility model.

The reference numerals are explained as follows:

10. support legs; 100. a pin assembly; 110. a pin; 111. a first limit part; 112. a groove; 120. a first tube; 121. a rib; 122. a third limit part; 123. a limit groove; 130. a second tube; 131. a sixth limit part; 132. a clamping hole; 140. a fixed tube; 141. an opening; 142. a fifth limit part; 143. a clamping block; 150. a sleeve; 151. a notch; 152. a fourth limit part; 153. a limiting block; 154. a protrusion; 200. a locking assembly; 210. a locking member; 211. a sleeve; 212. a first connecting rod; 213. pulling and buckling; 214. a plug cavity; 215. a second limit part; 216. a protruding block; 217. a first inner wall surface; 218. a second inner wall surface; 219. an empty-avoiding groove; 220. a first end; 221. a second end; 222. a third end; 223. a fourth end; 224. a series connection hole; 225. a second connecting rod; 20. a photographing support frame; 21. and (5) a mounting seat.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model will be described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Referring to fig. 1, the present utility model provides a support leg 10 for supporting a photographing apparatus, so as to prevent the photographing apparatus from shaking to affect the photographing effect when a user uses the photographing apparatus. By shooting with the support legs 10, a user can simultaneously open or lock all the wrenches 213 on the support legs 10 to realize synchronous unlocking or locking, and the wrenches 213 do not need to be opened or locked one by one, so that the user has good use feeling.

The support leg 10 includes a pin assembly 100 and a locking assembly 200, the pin assembly 100 being capable of being axially extended or contracted to switch between an extended state and a retracted state. The locking assembly 200 is used to maintain the pin assembly 100 in a certain extended or contracted state, and the locking assembly 200 can also be manipulated to release the pin assembly 100 so that the pin assembly 100 can change its length dimension in an axial direction.

The pin assembly 100 includes at least three pins 110 sleeved in sequence, and two axially adjacent pins 110 can relatively move along the axial direction of the pin assembly 100, so that the pin assembly 100 can be axially extended or shortened, and the circumferential rotation of the adjacent pins is mutually limited. It should be noted that, when the pin assembly 100 is extended in the axial direction, the supporting leg 10 is in the unfolded state, and the photographing apparatus supported by the supporting leg 10 can operate at a higher viewing angle, and the supporting leg 10 in the unfolded state can also be used as a selfie stick in certain use situations. When the pin assembly 100 is axially contracted, the support legs 10 are in a storage state for easy storage and carrying.

The locking assembly 200 includes a plurality of locking members 210, wherein each locking member 210 is disposed between two adjacent pins 110, and the locking members 210 are capable of limiting axial movement of two axially adjacent pins 110 along the pin assembly 100. As pin assembly 100 is extended, retaining member 210 can limit the corresponding pin 110 from shortening or continuing to extend in the axial direction of pin assembly 100. As pin assembly 100 shortens, retaining member 210 can limit axial extension or continued shortening of the corresponding pin 110 along pin assembly 100.

Referring to fig. 2, the locking member 210 includes a sleeve 211, a first connecting rod 212 and a pulling buckle 213, the sleeve 211 is in an open loop structure and circumferentially limited to the corresponding pins 110, a notch extending axially to two ends of the sleeve 211 is provided on a side wall of the sleeve 211, i.e. the sleeve 211 is not closed, the sleeve 211 and the first connecting rod 212 enclose to form a plugging cavity 214, the sleeve 211 sleeves two axially adjacent pins 110 in the plugging cavity 214 to limit relative movement of two adjacent pins 110, the pulling buckle 213 is connected to the first connecting rod 212, and the pulling buckle 213 can be pulled to release the limitation of the plugging cavity 214. The pin 110 is inserted into the insertion cavity 214, the pulling buckle 213 is turned around the connection point of the pulling buckle 213 and the first connecting rod 212 to drive the first connecting rod 212 to move, the first connecting rod 212 pulls the sleeve 211 to deform the sleeve 211 so as to adjust the gap between the edges of the two ends of the sleeve 211, and therefore the size of the insertion cavity 214 is changed, and the purpose that the pulling buckle 213 can be pulled to release the expansion limitation of the insertion cavity 214 is achieved.

Wherein any two adjacent wrenches 213 in the axial direction are aligned in the axial direction of the pin assembly 100.

Any two adjacent wrenches 213 are arranged on the supporting leg 10 and aligned along the axial direction of the pin assembly 100, so that a user can simultaneously open or lock all wrenches 213 on the supporting leg 10 to realize synchronous unlocking and locking of all pins 110, each wrenches 213 do not need to be opened or locked one by one, and the use feeling of the user is good.

Each pin 110 is provided with a first limiting part 111, each locking member 210 is provided with a second limiting part 215, one of the first limiting part 111 and the second limiting part 215 comprises a protruding block 216, the other one comprises a groove 112, for example, as shown in fig. 2 and 3, the first limiting part 111 is provided with a groove 112, the second limiting part 215 is provided with a protruding block 216, and when the protruding block 216 is embedded into the groove 112 along the axial direction of the pin assembly 100, the corresponding pin 110 and the locking member 210 realize limiting of circumferential rotation; when the protruding block 216 is disengaged from the groove 112 along the axial direction of the pin assembly 100, the circumferential limitation of the corresponding pin 110 and the locking member 210 is released. In another embodiment, the positions of the protruding block 216 and the groove 112 may be reversed, where the protruding block 216 is disposed on the first limiting portion 111 and the groove 112 is disposed on the second limiting portion 215. It should be understood that the protruding block 216 and the recess 112 may not be provided, so long as the corresponding pins 110 and the locking members 210 are protected.

In one embodiment, the first limiting portions 111 provided on any two adjacent pins 110 are aligned along the axial direction of the pin assembly 100. It should be noted that, the first limiting portions 111 disposed on any two adjacent pins 110 are aligned along the axial direction of the pin assembly 100, and correspondingly, the second limiting portions 215 disposed on any two adjacent locking members 210 are also aligned along the axial direction of the pin assembly 100. Because any adjacent two of the toggle buttons 213 are aligned in the axial direction of the pin assembly 100, and any adjacent second limiting portion 215 is also aligned in the axial direction of the pin assembly 100, any adjacent two of the locking members 210 can be provided as the same locking member 210, so that there is no need to additionally redesign and reproduce different locking members 210 and different pins 110 in design production, and production cost is reduced. It will be appreciated that, regardless of the production cost, the first limiting portions 111 of any two adjacent pins 110 may be disposed not to be aligned along the axial direction of the pin assembly 100, so long as the corresponding pins 110 and the locking members 210 are protected.

Referring to fig. 4, defining two axially adjacent pins 110 as a first tube 120 and a second tube 130, the pin assembly further includes a fixing tube 140, the fixing tube 140 is disposed between the first tube 120 and the second tube 130, the fixing tube 140 is sleeved on the second tube 130, the fixing tube 140 is fixedly connected with the second tube 130, the first tube 120 is provided with a rib 121 extending along an axial direction, a sidewall of the fixing tube 140 is provided with an opening 141 extending along the axial direction to edges of both ends of the fixing tube 140, and edges of both ends of the fixing tube 140 can abut against the rib 121, so that circumferential movement of the first tube 120 and the fixing tube 140 is limited; the side wall of the fixed tube 140 is provided with a fifth limiting portion 142, the side wall of the second tube 130 is provided with a sixth limiting portion 131, one of the fifth limiting portion 142 and the sixth limiting portion 131 includes a clamping block 143, the other includes a clamping hole 132, for example, fig. 4, the fifth limiting portion 142 is provided with a clamping block 143, the sixth limiting portion 131 is provided with a clamping hole 132, and the clamping block 143 is clamped in the clamping hole 132 to limit the relative movement between the fixed tube 140 and the second tube 130. It is understood that the clamping block 143 may be disposed on the sixth limiting portion 131, and the clamping hole 132 may be disposed on the fifth limiting portion 142, so long as the fixing tube 140 and the second tube 130 are prevented from moving relatively.

It should be noted that, the circumferential movement of the first tube 120 and the fixed tube 140 is limited, and the relative movement of the fixed tube 140 and the second tube 130 is limited, it is understood that the circumferential rotation of the first tube 120 and the second tube 130 are limited.

With continued reference to fig. 4, the pin assembly 100 further includes a sleeve 150, the sleeve 150 is disposed between the first tube 120 and the second tube 130, the first tube 120 is fixedly connected to the sleeve 150, the sleeve 150 is sleeved on the second tube 130, a third limiting portion 122 is disposed on a side wall of the first tube 120, a fourth limiting portion 152 is disposed on a side wall of the sleeve 150, one of the third limiting portion 122 and the fourth limiting portion 152 includes a limiting groove 123, the other includes a limiting block 153, for example, fig. 4, the third limiting portion 122 is disposed with a limiting groove 123, the fourth limiting portion 152 is disposed with a limiting block 153, and the limiting block 153 is clamped in the limiting groove 123 to limit relative movement between the sleeve 150 and the first tube 120. It is understood that the limiting groove 123 may be disposed on the fourth limiting portion 152, and the limiting block 153 may be disposed on the third limiting portion 122, so long as the sleeve 150 and the first tube 120 are protected.

The side wall of the sleeve 150 is provided with notches 151 extending to the edges of the two ends of the sleeve 150 in the axial direction, the sleeve 211 is sleeved on the first pipe 120 and the sleeve 150 at the same time, the sleeve 211 can clamp the first pipe 120 and the sleeve 150 at the same time under the action of the spanner 213, the sleeve 150 is reduced in radial dimension under the action of the sleeve 211, and the sleeve 150 clamps the second pipe 130 sleeved in the sleeve 150 so as to lock the first pipe 120 and the second pipe 130. In one embodiment, when the sleeve 211 clamps the first tube 120 and the sleeve 150, edges of both ends of the sleeve 150 can abut against the ribs 121, increasing friction between the first tube 120 and the sleeve 150, so that the first tube 120 and the sleeve 150 are locked more firmly.

Referring to fig. 5, the inner wall of the sleeve 211 is provided with a first inner wall surface 217 and a second inner wall surface 218, the radial dimension of the first inner wall surface 217 is larger than the radial dimension of the second inner wall surface 218, the radial dimension of the first tube 120 is larger than the radial dimension of the sleeve 150, when the sleeve 211 is sleeved on the first tube 120 and the sleeve 150, the first inner wall surface 217 is connected to the first tube 120, the second inner wall surface 218 is connected to the sleeve 150, and the radial dimension of the first inner wall surface 217 is matched with the radial dimension of the first tube 120, the radial dimension of the second inner wall surface 218 is matched with the radial dimension of the sleeve 150, and the sleeve 211 can clamp the first tube 120 and the sleeve 150 simultaneously under the action of the spanner 213.

With continued reference to fig. 5, a hollow-avoiding groove 219 is disposed on a side wall of the sleeve 211 near the first connecting rod 212, the hollow-avoiding groove 219 divides the sleeve 211 disposed in an open loop into a first end 220, a second end 221, a third end 222 and a fourth end 223 disposed at intervals, the first end 220, the second end 221, the third end 222 and the fourth end 223 are folded outwards relative to an end face of the sleeve 211, the first end 220 and the second end 221 are provided with a serial hole 224, the first connecting rod 212 is inserted into the serial hole 224 and connected to the first end 220 and the second end 221, the serial hole 224 of the second end 221 is in a flat hole shape, and the diameter of the serial hole 224 of the second end 221 is larger than the outer diameter of the first connecting rod 212. The diameter of the serial connection hole 224 of the second end 221 is set to be larger than the outer diameter of the first connecting rod 212, and the first connecting rod 212 can move relative to the second end 221 when the trigger 213 is pulled, so that the size of the insertion cavity 214 is adjusted to unlock or lock the first tube 120 and the second tube 130.

With continued reference to fig. 2, the sleeve 211 further includes a second connecting rod 225, opposite ends of the second connecting rod 225 are respectively connected to the third end 222 and the fourth end 223, and the second connecting rod 225 is capable of limiting the relative movement of the sleeve 211 and the first tube 120. It should be noted that the second connecting rod 225 may be a threaded connection or a connection provided with a protrusion or a groove, so long as the second connecting rod 225 is capable of fixing the sleeve 211 to the first tube 120. When the locking member 210 needs to be replaced when a certain time period is used, the user releases the pulling buckle 213 to release the restriction of the pulling buckle 213 to the sleeve 211, then releases the restriction of the second connecting rod 225 to the sleeve 211, detaches the locking member 210 to be replaced from the support leg 10, and then sleeves the new locking member 210 on the first tube 120, and locks the second connecting rod 225 to restrict the relative movement of the sleeve 211 and the first tube 120.

With continued reference to fig. 4, the side wall of the sleeve 150 is provided with circumferentially arranged protrusions 154, the protrusions 154 being capable of abutting against adjacent sleeves 211; the restriction of the first connecting rod 212 or the second connecting rod 225 to the sleeve 211 is loosened to separate the sleeve 211 from the first tube 120, or the sleeve 211 is separated from the first tube 120 under the action of external force, and the protrusion 154 abuts against the sleeve 211, so that the sleeve 211 cannot be separated from the sleeve 150. It is understood that the circumferentially arranged protrusions 154 provided on the side wall of the sleeve 150 may be provided as protrusions, the sleeve 211 is provided with grooves adapted to the protrusions, and the protrusions are engaged with the grooves to limit the sleeve 211 from being separated from the sleeve 150, so long as the sleeve 211 is prevented from being separated from the sleeve 150.

When the support leg 10 is used, a user firstly pulls open the pulling buckles 213 aligned along the axial direction of the pin assembly 100 at the same time, then pulls open the pin assembly 100, and when the pin assembly 100 is stretched to the maximum position, pulls the pulling buckles 213 on the two adjacent pins 110 tightly so as to limit the relative movement of the two adjacent pins 110; after the support leg 10 is used, a user pulls the pulling buckle 213 to release the restriction of the locking piece 210 on the two adjacent pins 110, then contracts the pin assembly 100 in the extended state, and after the pin assembly 100 is contracted to the minimum state, pulls the pulling buckle 213 aligned along the axial direction of the pin assembly 100, thereby realizing the storage of the support leg 10.

Referring to fig. 6, the present utility model further provides a photographing support frame 20, where the photographing support frame 20 includes a mounting base 21 and a plurality of the support legs 10, the plurality of support legs 10 are connected to the mounting base 21, the plurality of support legs 10 are disposed at an included angle along an axial direction, and the photographing support frame 20 is connected to a photographing device to perform photographing.

When a user uses the photographing support frame 20, firstly, the spanner 213 on one support leg 10 is simultaneously unlocked, then the pipe foot assembly 100 is pulled open, then the spanner 213 is pulled tightly, then other support legs 10 are pulled open, after all support legs 10 are stretched, the angle of each support leg 10 is adjusted to adjust the overall height of the photographing support frame 20, after the photographing device is adjusted to a required photographing height, photographing can be performed by installing the photographing device on the installation seat 21; after shooting is completed, a user detaches the shooting device from the mounting seat 21, folds the supporting legs 10 arranged in an included angle, pulls the pull buckle 213 open to store the supporting legs 10, and pulls the pull buckle 213 tightly, so that the storage of the shooting supporting frame 20 is realized.

While the utility model has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present utility model may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. A support leg, comprising:

the pin assembly (100) comprises at least three pins (110) which are sleeved in sequence, wherein at least three pins (110) can move along the axial direction of the pin assembly (100) so that the pin assembly (100) can be lengthened or shortened, and the circumferential rotation of the adjacent pins (110) is mutually limited;

the locking assembly (200) comprises a plurality of locking pieces (210), wherein each locking piece (210) is arranged between every two adjacent pins (110), and the locking pieces (210) can limit the corresponding pins (110) to move along the axial direction of the pin assembly (100);

the locking piece (210) comprises a sleeve (211), a first connecting rod (212) and a pulling buckle (213), wherein the sleeve (211) is of an open-loop structure and circumferentially limited to the corresponding pin (110), the sleeve (211) and the first connecting rod (212) are enclosed to form an inserting cavity (214), the corresponding pin (110) is sleeved in the inserting cavity (214) by the sleeve (211) so as to limit the relative movement of two adjacent pins (110), the pulling buckle (213) is connected to the first connecting rod (212), and the pulling buckle (213) can be pulled so as to relieve the limitation of the expansion of the inserting cavity (214);

wherein any adjacent two of said wrenches (213) are aligned along an axial direction of said pin assembly (100);

define two that axial is adjacent pin (110) are first pipe (120) and second pipe (130), pin subassembly (100) include fixed pipe (140), fixed pipe (140) set up first pipe (120) with between second pipe (130), fixed pipe (140) cover is located second pipe (130), just fixed pipe (140) with second pipe (130) fixed connection, first pipe (120) are provided with along axially extending bead (121), the lateral wall of fixed pipe (140) is provided with opening (141) that extend axially to fixed pipe (140) both ends edge, the edge at fixed pipe (140) both ends can the butt in bead (121), so that first pipe (120) with the circumference activity of fixed pipe (140) is restricted, and then makes first pipe (120) with the circumference rotation of second pipe (130) is restricted.

2. The support leg according to claim 1, characterized in that each pin (110) is provided with a first limit portion (111), each locking member (210) is provided with a second limit portion (215), and the second limit portions (215) are connected to the first limit portions (111) to achieve limit of circumferential rotation of the corresponding pin (110) and locking member (210).

3. Support leg according to claim 2, characterized in that the first limit stop (111) provided on any adjacent two of the pins (110) is aligned in the axial direction of the pin assembly (100).

4. The support leg according to claim 2, wherein one of the first and second limiting portions (111, 215) comprises a protruding block (216), the other comprises a groove (112), and the protruding block (216) is capable of being embedded into the groove (112) along the axial direction of the pin assembly (100) to achieve limiting of circumferential rotation of the corresponding pin (110) and locking member (210).

5. The support leg according to claim 1, wherein the pin assembly (100) further comprises a sleeve (150), the sleeve (150) is sleeved between the first tube (120) and the second tube (130), a notch (151) extending axially to two end edges of the sleeve (150) is provided on a side wall of the sleeve (150), the sleeve (211) is sleeved on the first tube (120) and the sleeve (150) at the same time, and the sleeve (211) can clamp the first tube (120) and the sleeve (150) at the same time under the action of the spanner (213).

6. The support leg according to claim 5, wherein a third limiting portion (122) is provided on a side wall of the first tube (120), a fourth limiting portion (152) is provided on a side wall of the sleeve (150), one of the third limiting portion (122) and the fourth limiting portion (152) includes a limiting groove (123), the other includes a limiting block (153), and the limiting block (153) is clamped to the limiting groove (123) to limit relative movement of the sleeve (150) and the first tube (120).

7. The support leg according to claim 5, characterized in that the side wall of the sleeve (150) is provided with a circumferentially arranged protrusion (154), which protrusion (154) can abut against the sleeve (211) when the sleeve (211) has a tendency to disengage from the first tube (120) towards the side where the protrusion (154) is located, so that the sleeve (211) cannot disengage from the sleeve (150).

8. The support leg according to claim 5, characterized in that the inner wall of the sleeve (211) is provided with a first inner wall surface (217) and a second inner wall surface (218), the radial dimension of the first inner wall surface (217) is larger than the radial dimension of the second inner wall surface (218), the radial dimension of the first tube (120) is larger than the radial dimension of the sleeve (150), and the first inner wall surface (217) is connected with the first tube (120) and the second inner wall surface (218) is connected with the sleeve (150) when the sleeve (211) is sleeved on the first tube (120) and the sleeve (150).

9. The support leg according to claim 1, wherein a side wall of the sleeve (211) near one side of the first connecting rod (212) is provided with a clearance groove (219), the clearance groove (219) divides the sleeve (211) into a first end (220), a second end (221), a third end (222) and a fourth end (223) which are arranged at intervals, the first end (220), the second end (221), the third end (222) and the fourth end (223) are all folded outwards relative to the end face of the sleeve (211), and the first connecting rod (212) is connected with the first end (220) and the second end (221); the sleeve (211) further comprises a second connecting rod (225), wherein two opposite ends of the second connecting rod (225) are respectively connected to the third end (222) and the fourth end (223), and the second connecting rod (225) can limit the relative movement of the sleeve (211) and the first pipe (120).

10. A photographic support frame, comprising:

a mounting base (21);

a plurality of support legs (10) according to any one of claims 1 to 9, connected to said mounting seat (21), a plurality of said support legs (10) being arranged at an angle in the axial direction.