Photographic tripod and supporting leg thereof

Abstract

The utility model relates to a photography tripod and a supporting leg thereof, the supporting leg comprises a first pipe, a second pipe, a third pipe and a fourth pipe, the first pipe defines a first end and a second end which are opposite in the axial direction, the first end is provided with a first notch, and the first notch comprises a longitudinal notch and a transverse groove intersecting with the longitudinal notch; the first fastening piece is used for changing the radial size of the first end, a boss is arranged on the inner circumferential face of the first fastening piece, and the boss is contained in the transverse groove of the first notch of the first pipe; the radial size of the second fastening piece can be adjusted, a protruding block is arranged on the peripheral face of the second fastening piece, the protruding block is matched with the longitudinal notch of the first notch of the first pipe so as to limit the second fastening piece in the circumferential direction, and the boss is matched with the protruding block so as to limit the second fastening piece in the axial direction; the second pipe is detachably connected with the second fastener; and the second fastener can lock or release the second pipe. According to the technical scheme, the second pipe can be locked or released, and operation is convenient; and the assembly is very convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of support, in particular to a photographic tripod and its leg. BACKGROUND

[0002] In order to facilitate the operation of photographic equipment, projectors or other instruments, adjustable height tripod is usually used to support such equipment. The adjustable height tripod usually includes a plurality of legs, each leg is composed of a plurality of pipe bodies which are connected end to end. By making the inner pipe relative to the outer pipe to extend or retract, the height of the tripod is adjusted. The existing leg has the problems of inconvenient operation and time-consuming and laborious. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application aims to provide a photographic tripod and its leg to improve the above problems or at least solve the above technical problems to some extent.

[0004] To achieve the above purpose, the present application provides a leg, comprising:

[0005] A first pipe defines an axially opposite first end and a second end, a channel is formed in the first pipe along the axial direction, the channel forms an opening at the first end, the first end is provided with a first notch extending from the opening towards the second end, the first notch includes a longitudinal notch and a transverse slot intersecting the longitudinal notch;

[0006] A first fastener is arranged on the outer side of the first end for changing the radial dimension of the first end, the inner circumferential surface of the first fastener is provided with a boss, and the boss is accommodated in the transverse slot of the first notch of the first pipe;

[0007] A second fastener is fixed to the inner side of the first end, the radial dimension of the second fastener is adjustable, the outer circumferential surface of the second fastener is provided with a protrusion, the protrusion cooperates with the longitudinal notch of the first notch of the first pipe to limit the second fastener in the circumferential direction, and the boss cooperates with the protrusion to limit the second fastener in the axial direction;

[0008] A second pipe is detachably connected with the second fastener;

[0009] The radial dimension of the second fastener changes with the radial dimension of the first end, so that the second fastener locks or releases the second pipe, when the second fastener locks the second pipe, the second pipe is fixed relative to the first pipe, and when the second fastener releases the second pipe, the second pipe can move axially relative to the first pipe in the channel.

[0010] In some embodiments, the protrusion is located in a region between an end of the longitudinal gap away from the first end and the transverse slot.

[0011] In some embodiments, an axial end of the protrusion forms an end face, and the boss abuts against the end face of the protrusion.

[0012] In some embodiments, the protrusion is clamped into the longitudinal gap, and two sides opposite to each other in the circumferential direction of the longitudinal gap define a circumferential position of the protrusion.

[0013] In some embodiments, at least one side of the protrusion is provided with a slot, and part of the boss is clamped into the slot and part of the boss is clamped into the transverse slot.

[0014] In some embodiments, the number of the first gaps and the number of the protrusions are both two, and the two first gaps are arranged at an interval of 180° in the circumferential direction of the first pipe, and the two protrusions are arranged at an interval of 180° in the circumferential direction of the second fastener.

[0015] In some embodiments, the transverse slot is perpendicular to the longitudinal gap.

[0016] In some embodiments, the first fastener comprises an elastic ring, a buckle, a rotating shaft and a tensioning shaft, the elastic ring is sleeved on the outer periphery of the first end, the buckle abuts against the outer periphery of the elastic ring, the rotating shaft is rotationally arranged on the buckle and connected with the elastic ring through the tensioning shaft, when the buckle is rotated, the elastic ring is clamped or loosened by the tensioning shaft, so as to change the radial size of the first end.

[0017] In some embodiments, the second fastener is provided with a second gap, and the second gap penetrates the second fastener in the radial direction, so that the second fastener is at least partially in a non-closed state in the circumferential direction, so that the radial size of the second fastener can be adjusted.

[0018] The application also provides a photographic tripod, comprising a photographic gimbal and the above-mentioned leg.

[0019] According to the above, in the leg and the photographic tripod of the application, the radial size of the first end of the first pipe can be changed by applying force to the first fastener, and then the radial size of the second fastener changes, so that the second pipe is locked or released, which is convenient to operate; and when assembling, the second fastener, the first fastener are directly sleeved on the inside and outside of the first pipe respectively, and the second pipe is sleeved into the second fastener, which is also very convenient to assemble. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as limiting the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 Structure schematic view of a photographic tripod according to an embodiment of the present application.

[0022] Figure 2 Structure schematic view of a photographic tripod according to an embodiment of the present application. Figure 1 Structure schematic view of a photographic tripod according to an embodiment of the present application.

[0023] Figure 3 Structure schematic view of a photographic tripod according to an embodiment of the present application. Figure 2 Structure schematic view of a photographic tripod according to an embodiment of the present application.

[0024] Figure 4 Structure schematic view of a photographic tripod according to an embodiment of the present application. Figure 2 Structure schematic view of a photographic tripod according to an embodiment of the present application.

[0025] Figure 5 Structure schematic view of a photographic tripod according to an embodiment of the present application. Figure 2 Structure schematic view of a photographic tripod according to an embodiment of the present application.

[0026] Figure 6 Structure schematic view of a photographic tripod according to an embodiment of the present application. Figure 2 Structure schematic view of a photographic tripod according to an embodiment of the present application.

[0027] Figure 7 Structure schematic view of a photographic tripod according to an embodiment of the present application. Figure 6 Structure schematic view of a photographic tripod according to an embodiment of the present application.

[0028] Figure 8 Structure schematic view of a photographic tripod according to an embodiment of the present application. Figure 1 Structure schematic view of a photographic tripod according to an embodiment of the present application.

[0029] Figure 9 Structure schematic view of a photographic tripod according to an embodiment of the present application. Figure 2 Structure schematic view of a photographic tripod according to an embodiment of the present application.

[0030] Figure 10 Structure schematic view of a photographic tripod according to an embodiment of the present application. Figure 2 Structure schematic view of a photographic tripod according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] The specific embodiments of the present application will be described below in detail with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the description of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] In the description of the present application, unless specifically defined and limited otherwise, the terms "set", "mounted", "connected" and the like should be broadly understood, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0033] The terms "first", "second", "third" and the like are merely used to distinguish similar attributes or elements, and do not indicate or imply relative importance or a specific order.

[0034] The term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, in addition to including the listed elements, other elements not explicitly listed can also be included.

[0035] Please refer to Figure 1 The foot stand 200 of an embodiment of the present application is used to support on a flat or uneven table top and ground, and can be used to support the equipment to be supported, such as camera equipment (camera, video camera, photographic lamp, etc.), projector or other precision instruments. In the embodiment, the foot stand 200 is a photographic foot stand. The foot stand 200 includes a telescopic leg 100. Among them, the leg of the photographic foot stand is also called a leg. In the embodiment, the leg 100 is a plurality, specifically three. In other embodiments, the number of legs 100 can also be one (i.e. the foot stand 200 is a single foot stand) or more. The plurality of legs 100 can be unfolded at a certain angle, and the height of the foot stand 200 as a whole can be adjusted by adjusting the amplitude of unfolding, so as to fix the video camera at a suitable shooting height. It should be noted that since the foot stand 200 can be extended and shortened, it can also be applied to other use scenarios that require height adjustment. In Figure 1 In the embodiment, the three legs 100 are close together, at which time the foot stand 200 is usually in a storage state, facilitating carrying and storage; when the three legs 100 are rotated at a certain angle to unfold, the foot stand 200 is usually in a use state, which can be supported on a table top or ground.

[0036] Specifically, when the foot stand 200 is a photographic foot stand, the foot stand 200 can also include a photographic gimbal.

[0037] Please refer to Figures 2 to 7The support leg 100 of an embodiment of the present application comprises a first pipe 10, a first fastener 20 sleeved outside the first pipe 10, a second fastener 30 embedded inside the first pipe 10, and a second pipe 40 for connecting with the second fastener 30. The first pipe 10 is formed with a channel 11 penetrating through in the axial direction, and the second pipe 40 is used to be movably sleeved in the first pipe 10 in the axial direction. The first pipe 10 has a first end 12 and a second end 13 opposite in the axial direction. The second end 13 is used to connect with a device to be supported or other pipes, and the first end 12 is used to connect with the second pipe 40.

[0038] In the embodiment, the first fastener 20 is arranged outside the first end 12 of the first pipe 10, and is used to apply a radial force to the first end 12. When the first end 12 is subjected to the force, its radial dimension can change. The second fastener 30 is arranged inside the first end 12, and is detachably connected with the second pipe 40, and is used to releasably lock the second pipe 40. When the radial dimension of the first end 12 of the first pipe 10 changes, it acts on the second fastener 30, so that the second fastener 30 locks or releases the second pipe 40. When the second pipe 40 is released, it can move axially in the channel 11 to extend out or retract relative to the first pipe 10. In the state shown in FIG. 1, the second pipe 40 is completely retracted into the first pipe 10, and when the second pipe 40 is locked by the second fastener 30, it is fixed relative to the first pipe 10. Figure 2 It is convenient to change the pipe diameter of the first pipe 10 by arranging the first fastener 20 and the second fastener 30 outside and inside the first pipe 10 respectively, so as to realize the locking and releasing of the second pipe 40, and the operation is convenient. It should be noted that the support leg 100 comprises a plurality of sleeved pipes, to form a plurality of groups of the first pipe 10 and the second pipe 40 cooperating with each other. The second pipe 40 cooperating with the previous outside first pipe 10 serves as the first pipe 10 cooperating with the next inside second pipe 40, that is, except for the outermost and innermost sleeved pipes, each sleeved pipe serves as both the first pipe 10 cooperating with the outside sleeved pipe and the second pipe 40 cooperating with the inside sleeved pipe.

[0039] In the embodiment, the first pipe 10 is in the shape of a circular tube, and has a first end 12 at the lower axial end and a second end 13 at the upper axial end. The second end 13 is used to support the equipment to be supported or to connect other pipes. The channel 11 has an opening 111 at the first end 12, and the first end 12 is provided with a first notch 113 extending from the opening 111 towards the second end 13. The first notch 113 includes a longitudinal notch 1131 extending in the axial direction and a transverse slot 1133 intersecting the longitudinal notch 1131. In the embodiment, the transverse slot 1133 is perpendicular to the longitudinal notch 1131. It is understood that the transverse slot 1133 can also be not perpendicular to the longitudinal notch 1131, and the transverse slot 1133 and the longitudinal notch 1131 can intersect at an inclined angle. More specifically, two transverse slots 1133 are respectively arranged on the two sides of the longitudinal notch 1131. Specifically, the first end 12 of the first pipe 10 is provided with two first notches 113, thereby separating the first end 12 into two separate parts. More specifically, the two first notches 113 are arranged at an interval of 180° along the circumference of the first pipe 10. In the embodiment, the transverse slot 1133 intersects the middle part of the longitudinal notch 1131. Of course, the transverse slot 1133 can also intersect other positions of the longitudinal notch 1131 other than the middle part.

[0040] Specifically, when the first pipe 10 is the outermost sleeve, the second end 13 of the first pipe 10 can be provided with external threads 115 to be connected to the support portion 400 of the leg 100 (see Figure 1 ), and the leg 100 is hinged to the base 300 of the support 200 through the support portion 400 (see Figure 1 ). It is understood that the external threads 115 can also be replaced by other connection structures, which are not limited herein. When the first pipe 10 is other inner sleeve other than the outermost sleeve, the second end 13 of the first pipe 10 can be provided with a connecting hole 116. Specifically, the connecting hole 116 can be a waist-shaped hole.

[0041] When the first end 12 is subjected to an inward radial force, due to the arrangement of the first notch 113, the two separate parts of the first end 12 can approach each other, and the circumferential width of the first notch 113 can be reduced, that is, the radial dimension of the first end 12 is reduced. Thus, the radial dimension of the part of the channel 11 corresponding to the first end 12 is changed. Among them, the first end 12 has a certain elasticity, and can be elastically deformed. For example, the first pipe 10 can be made of an elastic material. When the external force acting on the first end 12 is removed, the deformation of the first notch 113 is restored, and the radial dimension of the first pipe 10 can return to the original size in the free state. Of course, when the first end 12 is made of a deformable material, even if the first notch 113 is not opened, the radial dimension of the first end 12 can also be reduced under the action of the inward radial force, so that the reduction of the radial dimension of the first end 12 can also not depend on the arrangement of the first notch 113.

[0042] In the embodiment, the second fastener 30 is fixedly connected with the first pipe 10. The second fastener 30 is embedded in the inner side of the first end 12 of the first pipe 10, and the outer circumferential surface of the second fastener 30 is attached to the inner circumferential surface of the first end 12 of the first pipe 10. The second fastener 30 is provided with a second gap 311. The second gap 311 penetrates the second fastener 30 in the radial direction, so that the second fastener 30 is at least partially in a non-closed state in the circumferential direction. Preferably, the second gap 311 extends along the entire length direction of the second fastener 30, that is, the second fastener 30 is a non-closed ring as a whole, so that the radial dimension of the second fastener 30 can be adjusted. It can be understood that two second gaps 311 extending along the entire length direction can be formed on the second fastener 30, that is, the second fastener 30 is composed of two separate semi-cylindrical pieces, so that the radial dimension of the second fastener 30 can also be changed; of course, the second fastener 30 can also be composed of three or more separate pieces, which is not limited here.

[0043] When the second fastener 30 is subjected to an inward radial force, due to the provision of the second gap 311, the two ends of the second fastener 30 in the circumferential direction can approach each other, and the circumferential width of the second gap 311 will decrease, that is, the radial dimension of the second fastener 30 will decrease. Among them, the second fastener 30 can have a certain elasticity, and it can be elastically deformed. For example, the second fastener 30 can be made of elastic material. When the external force acting on the second fastener 30 is removed, the deformation of the second gap 311 recovers, and the radial dimension of the second fastener 30 can recover to the original size in the free state. Since the second fastener 30 is embedded in the first pipe 10, when the first end 12 of the first pipe 10 is subjected to an inward radial force and the radial dimension is reduced, the inward radial force is transmitted to the second fastener 30 through the first pipe 10, so that the radial dimension of the second fastener 30 is reduced.

[0044] Specifically, the outer circumferential surface of the second fastener 30 is provided with a protrusion 313, which is used to cooperate with the longitudinal gap 1131 of the first gap 113 of the first pipe 10 to limit the second fastener 30 in the circumferential direction, i.e. to limit the circumferential rotation of the second fastener 30 relative to the first pipe 10. More specifically, the protrusion 313 is used to be clamped into the longitudinal gap 1131 of the first gap 113 of the first pipe 10, and the two sides 1135 opposite to each other are formed on both sides of the longitudinal gap 1131 in the circumferential direction, and the protrusion 313 is limited in the circumferential position by the two sides 1135. Specifically, the distance L1 between the end of the longitudinal gap 1131 away from the first end 12 and the transverse slot 1133 substantially corresponds to the length L2 of the protrusion 313 in the axial direction, and L1 is preferably slightly larger than L2 to facilitate assembly. In the present embodiment, the protrusion 313 is located in the region between the end of the longitudinal gap 1131 away from the first end 12 and the transverse slot 1133, and one end of the protrusion 313 in the axial direction forms an end surface 3131. Specifically, the width of the protrusion 313 in the circumferential direction substantially corresponds to the width of the longitudinal gap 1131 of the first gap 113 in the circumferential direction, and the width of the protrusion 313 in the circumferential direction is preferably slightly smaller than the width of the longitudinal gap 1131 in the circumferential direction. Specifically, corresponding to the number of the first gap 113, the number of the protrusion 313 can also be two, and the two protrusions 313 are arranged at an interval of 180° in the circumferential direction of the second fastener 30. It can be understood that the first gap 113 and the protrusion 313 can also be one, three, more than three, or other numbers. Specifically, the protrusion 313 is arranged at one end (i.e. the upper end of the outer circumferential surface) of the second fastener 30. It can be understood that "substantially corresponds to" herein means generally corresponds but not absolutely equal.

[0045] After assembly, the second fastener 30 is embedded in the first end 12 of the first pipe 10, and the protrusion 313 of the second fastener 30 is embedded in the longitudinal gap 1131 of the first gap 113 of the first pipe 10. When the first end 12 of the first pipe 10 is subjected to a radially inward force, the two separated parts of the first end 12 are moved closer to each other, so that the radial dimension of the first end 12 is reduced, thereby exerting a radially inward force on the second fastener 30, so that the two ends of the second fastener 30 in the circumferential direction are moved closer to each other, and the radial dimension of the second fastener 30 is reduced, so as to lock the second pipe 40 connected thereto. Similar to the first end 12 of the first pipe 10, the second fastener 30 also has a certain elasticity, and the change of the radial dimension thereof is reversible. When the force acting on the first end 12 of the first pipe 10 is removed, the radial dimension of the first end 12 returns to the original size, and the deformation of the second fastener 30 also returns to the original size, thereby releasing the second pipe 40 connected to the second fastener 30, at this time, the second pipe 40 can be moved relative to the first pipe 10 to adjust the support leg 100 to a suitable length.

[0046] Specifically, the second tube 40 is arranged in the second fastener 30, i.e. the second fastener 30 is arranged on the outer periphery of the second tube 40. The outer periphery of the second tube 40 is in contact with the inner periphery of the second fastener 30. It can be understood that the inner diameters of the first tube 10, the second fastener 30 and the second tube 40 are gradually reduced, and the second tube 40 can move axially in the channel 11 of the first tube 10 through the second fastener 30. As described above, when the first end 12 of the first tube 10 is reduced in radial dimension due to the radial force, the radial dimension of the second fastener 30 is reduced, thereby locking the second tube 40 on the inner side of the second fastener 30, and further preventing the second tube 40 from moving axially in the channel 11 of the first tube 10. Since the deformation of the first notch 113 and the second notch 311 is reversible, when the force applied to the first tube 10 is removed, the deformation of the first notch 113 and the second notch 311 is restored, so that the second fastener 30 releases the locking action on the second tube 40, and at this time the second tube 40 can be moved to adjust the length of the leg 100 to a suitable length.

[0047] In the embodiment, the first fastener 20 is used to change the radial dimension of the first end 12.

[0048] In the embodiment, please refer to Figure 4 and Figure 5 The inner periphery of the first fastener 20 is provided with a protrusion 201 extending in the circumferential direction, the protrusion 201 is used to cooperate with the protrusion 313 of the second fastener 30 to axially limit the second fastener 30, and the protrusion 201 is used to be accommodated in the transverse groove 1133 of the first notch 113 of the first tube 10. In the embodiment, the protrusion 201 abuts against the end surface 3131 of the protrusion 313. Specifically, in the embodiment, the protrusion 201 limits the protrusion 313 in the area on one side of the transverse groove 1133 of the longitudinal notch 1131.

[0049] Please refer to Figure 8 In another embodiment, at least one side of the protrusion 313 is provided with a slot 3133, and the protrusion 201 is two, part of each protrusion 201 is clamped in the slot 3133, and part of each protrusion 201 is clamped in the transverse groove 1133. At this time, the distance L1 between the end of the longitudinal notch 1131 away from the first end 12 and the transverse groove 1133 can be less than the length L2 of the protrusion 313 in the axial direction, and at this time the protrusion 313 is not completely located in the area between the end of the longitudinal notch 1131 away from the first end 12 and the transverse groove 1133. It can be understood that the protrusion 201 can also be one, and when the protrusion 201 is one, the transverse groove 1133 and the slot 3133 are both only one.

[0050] Please refer to Figure 9 and Figure 10The first fastener 20 of the embodiment comprises an elastic ring 21. The elastic ring 21 comprises a surrounding section 211 and two free sections 212 in the circumferential direction. The surrounding section 211 is connected between the two free sections 212. The two free sections 212 are spaced apart from each other and form a third gap 213. When the distance between the two free sections 212 is changed, i.e. the circumferential width of the third gap 213 is changed, the radial dimension of the surrounding section 211 is also changed. The surrounding section 211 is in the form of an arc and is sleeved on the outer periphery of the first end 12. The inner peripheral surface of the surrounding section 211 can abut against the outer peripheral surface of the first end 12. Specifically, the above-mentioned boss 201 is arranged on the inner peripheral surface of the surrounding section 211 of the elastic ring 21 of the first fastener 20.

[0051] Specifically, the first fastener 20 further comprises a buckle assembly connected with the elastic ring 21, which is used to adjust the tightness of the elastic ring 21. The buckle assembly comprises a tensioning shaft 22, a buckle 23, a rotating shaft 24 and a spring 25. The tightness of the elastic ring 21 can be changed by rotating the rotating shaft 24 to move the buckle 23 to hold the tensioning shaft 22.

[0052] Specifically, the buckle 23 comprises a handle 232 for user to operate to pivot and a biasing portion 231 provided at a transverse end of the handle 232. The thickness of the biasing portion 231 in a direction perpendicular to the transverse direction is greater than the thickness of the handle 232 in the direction. In the present embodiment, the biasing portion 231 is cross-sectionally in the shape of a water drop, which abuts against one of the free segments 212 of the elastic ring 21 and the joint thereof with the enclosing segment 211. The handle 232 extends along the circumference of the enclosing segment 211. The biasing portion 231 is provided with an axially penetrating first through hole 2311 and a radially penetrating second through hole 2312. The first through hole 2311 and the second through hole 2312 are in communication. A cylindrical rotating shaft 24 is provided in the first through hole 2311. The rotating shaft 24 is further provided with a radially penetrating third through hole 241. The second through hole 2312 and the third through hole 241 are coaxial. The two free segments 212 of the elastic ring 21 are respectively provided with a fourth through hole 2121 for the tensioning shaft 22 to pass through. The tensioning shaft 22 passes through the fourth through holes 2121 of the two free segments 212 in turn, then passes through the second through hole 2312 of the biasing portion 231 and is connected with the rotating shaft 24 at the third through hole 241. The tensioning shaft 22 is peripherally sleeved with a spring 25, and the two ends of the spring 25 abut against the two free segments 212 between the first fastener 20 respectively. When the buckle 23 is screwed, the rotating shaft 243 pulls the tensioning shaft 22, so that the two free segments 212 are close to each other, thereby the first end 12 is contracted, and then the second pipe 40 is locked to the first pipe 10 as described above. When the buckle 23 is pulled in the opposite direction, the spring 25 is reset, the two ends of the spring 25 push the corresponding two free segments 212 away, and then the second fastener 20 restores the deformation, thereby unlocking the second pipe 40 from the first pipe 10. At this time, the second pipe 40 can be axially moved in the first pipe 10, and when the desired length of the leg 100 is obtained, the buckle 23 is screwed again to lock the second pipe 40 again.

[0053] It can be understood that in other embodiments, the buckle assembly can also be replaced by a bolt, that is, the head of the bolt abuts against the outside of one of the free segments, the screw rod passes through the through holes of the two free segments in turn and is connected with the nut, and the two free segments are close to each other by relatively screwing the bolt and the nut; on the contrary, the two free segments can be away from each other by unscrewing the bolt and the nut, thereby changing the diameter of the elastic ring and the radial size of the first end of the first pipe. Similarly, a spring can also be sleeved on the bolt, and the spring is located before the two free segments to provide abutting force to the two free segments.

[0054] Preferably, a wear-resistant sheet 26 is arranged between the buckle 23 and the adjacent free section 212. The wear-resistant sheet 26 is provided with a fifth through hole 261 which is radially through, for the tensioning shaft 22 to pass through. Further preferably, a sixth through hole 2122 which is radially through is arranged on the free section 212 adjacent to the wear-resistant sheet 26. A second protrusion 263 is correspondingly arranged on the wear-resistant sheet 26, and when the wear-resistant sheet 26 is arranged between the buckle 23 and the corresponding free section 212, the wear-resistant sheet 26 is clamped with the second protrusion 263 and the sixth through hole 2122 of the free section 212. Thus, the rotation of the buckle 23 does not move the wear-resistant sheet 26. Preferably, the sixth through hole 2122 is provided with two, respectively arranged at the axial ends of the fourth through hole 2121. Correspondingly, the second protrusion 263 is also provided with two.

[0055] When the leg 100 of the embodiment is assembled, the second fastener 30 can be first sleeved into the inside of the first end 12 of the first pipe 10 from the opening 111, and the lug 313 of the second fastener 30 is clamped into the longitudinal gap 1131 of the first gap 113 of the first end 12 of the first pipe 10, so as to limit the second fastener 30 in the circumferential direction; then the first fastener 20 is sleeved on the outside of the first end 12, so that the boss 201 is accommodated in the transverse groove 1133 of the first gap 113 of the first end 12 of the first pipe 10, thereby limiting the second fastener 30 in the axial direction; then the second pipe 40 is inserted into the second fastener 30, and the buckle 23 is tightened, so as to lock the second pipe 40.

[0056] The leg 100 of the embodiment can also include a third pipe and more sleeves. The multiple sleeves are sequentially sleeved and can relatively move with each other. Two sleeves connected with each other are connected by a set of the first fastener and the second fastener. Each set of the first fastener and the second fastener can lock and limit the relative movement between the two sleeves connected with each other, or release the limitation on the relative movement between the two sleeves. The number of the sleeves of the leg 200 of the embodiment is five, and in other embodiments, the number of the sleeves can be less than five or more than five.

[0057] In the embodiment, the leg 100 further includes a support pad 60 which is connected to the innermost sleeve and located at the end of the leg 100 away from the support part 400. The leg 100 is supported on the table top or the ground by the support pad 60.

[0058] In the leg and the photographic tripod of the application, the radial dimension of the first end of the first pipe can be changed by applying force to the first fastener, and then the radial dimension of the second fastener is changed, so as to lock or release the second pipe, which is convenient to operate; and when assembled, the second fastener, the first fastener are directly sleeved on the inside and outside of the first pipe respectively, and the second pipe is sleeved into the second fastener, which is also very convenient to assemble.

[0059] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A tripod leg, characterized in that, include: A first tube is defined with an axially opposite first end and a second end. An axially penetrating channel is formed inside the first tube. The channel has an opening at the first end. The first end is provided with a first notch extending from the opening toward the second end. The first notch includes a longitudinal notch and a transverse groove intersecting the longitudinal notch. A first fastener is disposed on the outer side of the first end and is used to change the radial dimension of the first end. The inner circumferential surface of the first fastener is provided with a boss, which is accommodated in the transverse groove of the first notch of the first tube. The second fastener is fixed to the inner side of the first end. The radial dimension of the second fastener is adjustable. The outer peripheral surface of the second fastener is provided with a protrusion. The protrusion engages with the longitudinal notch of the first notch of the first tube to limit the second fastener in the circumferential direction. The boss engages with the protrusion to limit the second fastener in the axial direction. The second tube is detachably connected to the second fastener; The radial dimension of the second fastener changes with the radial dimension of the first end, so that the second fastener locks or releases the second tube. When the second fastener locks the second tube, the second tube is fixed relative to the first tube. When the second fastener releases the second tube, the second tube can move axially relative to the first tube within the channel.

2. The outrigger as described in claim 1, characterized in that, The bump is located in the region between the end of the longitudinal notch furthest from the first end and the transverse groove.

3. The outrigger as described in claim 2, characterized in that, One end of the protrusion along the axial direction forms an end face, and the boss abuts against the end face of the protrusion.

4. The outrigger as described in claim 1, characterized in that, The protrusion engages with the longitudinal notch, and two opposing sides are formed on both sides of the longitudinal notch in the circumferential direction. The circumferential position of the protrusion is defined by the two sides in the circumferential direction.

5. The outrigger as described in claim 1, characterized in that, The protrusion has a slot on at least one side in the circumferential direction, and part of the protrusion is inserted into the slot and part is inserted into the transverse groove.

6. The outrigger as described in claim 1, characterized in that, The number of the first notch and the number of the protrusions are both two. The two first notches are arranged 180° apart along the circumference of the first tube, and the two protrusions are arranged 180° apart along the circumference of the second fastener.

7. The outrigger as described in claim 1, characterized in that, The transverse groove is provided perpendicular to the longitudinal notch.

8. The outrigger as described in claim 1, characterized in that, The first fastener includes an elastic ring, a buckle, a rotating shaft, and a tensioning shaft. The elastic ring is sleeved on the outer periphery of the first end, the buckle abuts against the outer periphery of the elastic ring, the rotating shaft is rotatably mounted on the buckle, and is connected to the elastic ring through the tensioning shaft. When the buckle is rotated, the elastic ring is clamped or loosened by the tensioning shaft, thereby changing the radial dimension of the first end.

9. The outrigger as described in claim 1, characterized in that, The second fastener has a second notch that penetrates the second fastener radially, making the second fastener at least partially open in the circumferential direction, so that the radial dimension of the second fastener is adjustable.

10. A photographic tripod, characterized in that, Includes a camera gimbal and one or more legs as described in any one of claims 1-9.

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