Support frame

Abstract

The utility model relates to a supporting frame, and belongs to the technical field of auxiliary supporting equipment. The supporting frame comprises a main rod, a fixed base, a movable base and a supporting assembly. The fixed seat is fixedly arranged at the bottom end of the main rod; the movable seat is movably connected to the main rod and can move in the axis extending direction of the main rod. The supporting assembly comprises at least three supporting feet and connecting rods in one-to-one correspondence with the supporting feet. The multiple supporting feet are arranged at intervals in the circumferential direction of the fixing base, and each supporting foot is rotationally connected with the fixing base. One end of the connecting rod is rotationally connected with the movable seat, and the other end is rotationally connected with the supporting leg. The connecting rod of the supporting assembly can drive the free end of the supporting foot to be lifted upwards in the direction of the main rod, so that the supporting foot and the connecting rod are folded on the peripheral side of the main rod. Under the condition that the overall length of the supporting frame is not changed, the length of the supporting feet can be set to be longer enough, so that the technical problems that the supporting feet of a traditional supporting frame affect the storage size and are inconvenient to carry are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to auxiliary support equipment technical field, especially in a kind of support frame. BACKGROUND

[0002] With the development of photography and video technology, people's requirements for photography scene setting and shooting angle are also higher and higher. To meet the adjustment and transformation of shooting and lighting at different heights and angles, it is usually necessary to erect photography equipment such as cameras and photography lights on support equipment such as support frames.

[0003] Traditional support frames usually use support legs for support, and in order to facilitate carrying and storage, the support legs of the support frame are usually designed as foldable storage structures. However, traditional triangular support frames usually adopt a forward opening design, i.e. the support legs are unfolded upward around the main rod. At this time, the support legs will extend beyond the bottom end of the main rod when they are folded, and the length of the support legs is limited by the folding length. If the length of the support legs is to be extended, the overall storage size will increase, which is not conducive to carrying. SUMMARY

[0004] One object of the present utility model is to solve the technical problem of the support legs of the traditional support frame affecting the storage size and being inconvenient to carry.

[0005] To solve the above technical problems, the present application provides a support frame, comprising: a main rod; a fixed seat fixedly arranged at the bottom end of the main rod; a movable seat movably connected to the main rod, which can move along the axial extension direction of the main rod; a support assembly comprising at least three support legs and a connecting rod corresponding to each support leg; a plurality of support legs are arranged at intervals along the circumferential direction of the fixed seat, and each support leg is rotatably connected to the fixed seat; one end of the connecting rod is rotatably connected to the movable seat, and the other end of the connecting rod is rotatably connected to the support leg; wherein, when the movable seat moves towards the direction away from the fixed seat, the connecting rod drives the free end of the support leg to move towards the direction of the main rod, so that the support leg and the connecting rod are folded on the outer circumferential side of the main rod; when the movable seat moves towards the direction close to the fixed seat, the connecting rod drives the support leg to unfold to be able to support on the external plane.

[0006] In some examples of the present application, the support frame comprises a plurality of first rotation shafts arranged on the fixed seat, and the axis of the first rotation shaft extends radially along the fixed seat; one end of the support leg close to the main rod abuts against the outer side of the fixed seat and is rotatably connected to the first rotation shaft, and the support leg can rotate around the axis of the first rotation shaft.

[0007] In some examples of the present application, the support frame comprises a plurality of second rotating shafts, the second rotating shafts are arranged on the moving seat, and the axes of the second rotating shafts extend along the radial direction of the moving seat; the second rotating shafts are arranged one by one corresponding to the first rotating shafts, and the lines connecting the corresponding second rotating shafts and the first rotating shafts are the extension directions of the main rods; one end of the connecting rod close to the main rod is in abutment with the outer side surface of the moving seat and is rotationally connected with the second rotating shaft, and the connecting rod can rotate about the axis of the second rotating shaft.

[0008] In some examples of the present application, the support frame comprises a plurality of third rotating shafts, the third rotating shafts are arranged through the middle part of the supporting leg and one end of the connecting rod away from the main rod to rotationally connect the connecting rod to the side surface of the supporting leg; the axis of the third rotating shaft is parallel to the axes of the first rotating shaft and the second rotating shaft, and the connecting rod and the supporting leg can rotate about the axis of the third rotating shaft.

[0009] In some examples of the present application, the fixed seat and the moving seat each comprise a seat body and an outer tangent plane; the seat body is annular, and a plurality of outer tangent planes are arranged at intervals around the outer side wall of the seat body; a connecting hole is arranged on the outer tangent plane, the axis of the connecting hole is perpendicular to the outer tangent plane, the connecting hole is used for connecting the support assembly; and the supporting leg and the connecting rod can rotate in the plane where the corresponding outer tangent plane is located.

[0010] In some examples of the present application, a plurality of abutment tables are arranged on the seat body, the abutment tables are arranged on the outer side wall of the seat body and are connected to the outer tangent planes; the abutment tables have opposite abutment surfaces and inclined surfaces, the abutment surfaces are perpendicular to the outer tangent planes, and the inclined surfaces are tangent to the outer side surface of the seat body.

[0011] In some examples of the present application, the support frame further comprises a locking unit, the locking unit is fixed on the moving seat and can move along with the moving seat, and the locking unit can fix and lock the moving seat at any position of the main rod.

[0012] In some examples of the present application, the locking unit comprises a screw sleeve and a knob, the screw sleeve and the knob are arranged through the main rod; the screw sleeve comprises a bottom plate and a screw pipe fixed on the bottom plate, the bottom plate is fixedly connected with the moving seat, the screw pipe is arranged on the side of the bottom plate away from the moving seat, and a vertical groove is arranged on the screw pipe; the knob is threadedly connected with the screw pipe; when the knob is rotated, the screw pipe is tightly pressed against the outer side surface of the main rod to lock the moving seat; when the knob is reversely rotated, the screw pipe is released from the pressing of the main rod, so that the moving seat can move along the axial direction of the main rod.

[0013] In some examples of this application, the support leg and the connecting rod are flat rod-shaped structures; both the connecting rod and the support leg are provided with through holes extending along their thickness direction, the through holes being used for hinged connection of the connecting rod or the support leg; when the support assembly is retracted, the support leg can cover the outer side of the connecting rod away from the main rod.

[0014] In some examples of this application, the main rod comprises multiple segments of rods of different diameters connected in sequence, each segment of the rods being slidably connected to the other, and the smaller diameter segment of the rod between two adjacent segments can be retracted into the larger diameter segment of the rod.

[0015] As can be seen from the above technical solution, the beneficial effects of this utility model are as follows:

[0016] This application provides a support frame, including a main rod, a fixed seat fixed to the main rod, a movable seat slidably connected to the main rod, and a support assembly rotatably connected to the fixed seat and the movable seat. When the movable seat moves away from the fixed seat, the connecting rod of the support assembly causes the free end of the support leg to lift upwards towards the main rod, causing the support leg and connecting rod to retract to the outer periphery of the main rod. When the movable seat moves towards the fixed seat, the connecting rod causes the support leg to move downwards and unfold, so as to be able to support on an external plane. By adopting the above-described reverse opening method, the length of the support leg can be set to be longer enough without changing the overall length of the support frame, thereby increasing the ground area of ​​the support frame and improving the stability and load-bearing capacity of the support frame. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the support frame in its normal use state in this embodiment.

[0018] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the central support frame in its semi-retracted state.

[0019] Figure 3 for Figure 1 A three-dimensional structural diagram of the support frame in its stowed state.

[0020] Figure 4 for Figure 1 A schematic diagram of the support frame from below.

[0021] Figure 5 for Figure 1 A top view of the central support frame.

[0022] Figure 6 for Figure 1 Exploded view of the central support frame.

[0023] Figure 7 for Figure 6A perspective view of a fixed seat of a support frame.

[0024] Figure 8 For Figure 6 A perspective view of a moving seat of a support frame.

[0025] Figure 9 For Figure 6 A perspective view of a screw sleeve of a support frame.

[0026] The reference signs are explained as follows:

[0027] 100, support frame; 10, main rod; 11, adapter; 12, rod body; 20, fixed seat; 21, seat body; 22, external tangent plane; 23, connecting hole; 24, abutting table; 241, abutting surface; 242, inclined surface; 30, moving seat; 31, first through hole; 40, support assembly; 41, supporting leg; 42, connecting rod; 43, via hole; 44, first rotation shaft; 45, second rotation shaft; 46, third rotation shaft; 50, locking unit; 51, screw sleeve; 511, bottom plate; 512, screw pipe; 513, vertical groove; 514, second through hole; 52, knob. DETAILED DESCRIPTION

[0028] The typical embodiments embodying the features and advantages of the present application will be described in detail in the following description. It should be understood that the present application can be varied in a wide range of embodiments, none of which depart from the scope of the present application, and that the description and drawings are to be considered as illustrative only and not restrictive in nature.

[0029] In the description of the present application, it should be understood that the indications of direction or positional relationship (such as up, down, left, right, front and back, etc.) in the embodiments shown in the drawings are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the positions of these elements change, the indications of direction will also change accordingly.

[0030] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0031] Please refer to Figures 1 to 9 The present application provides a support frame 100, which comprises a main rod 10, a fixed seat 20, a moving seat 30 and a support assembly 40.

[0032] The fixed seat 20 is fixedly arranged at the bottom end of the main rod 10. The movable seat 30 is movably connected to the main rod 10 and can move along the axial extension direction of the main rod 10. The support assembly 40 comprises at least three supporting legs 41 and connecting rods 42 corresponding to the supporting legs 41. The supporting legs 41 are arranged at intervals along the circumferential direction of the fixed seat 20, and each supporting leg 41 is rotatably connected to the fixed seat 20. One end of the connecting rod 42 is rotatably connected to the movable seat 30, and the other end of the connecting rod 42 is rotatably connected to the supporting leg 41.

[0033] When the movable seat 30 moves towards the direction away from the fixed seat 20, the connecting rod 42 drives the free end of the supporting leg 41 to move towards the direction of the main rod 10, so that the supporting leg 41 and the connecting rod 42 are folded on the outer circumferential side of the main rod 10. When the movable seat 30 moves towards the direction close to the fixed seat 20, the connecting rod 42 drives the supporting leg 41 to unfold so as to be supported on the external plane.

[0034] Specifically, the support assembly 40 is composed of three supporting legs 41 and three connecting rods 42 corresponding thereto. Of course, the number of supporting legs 41 and connecting rods 42 can be four, five, six or the like.

[0035] As shown in Figure 4 and Figure 5 , the three supporting legs 41 are arranged at intervals around the circumferential direction of the fixed seat 20. One end of the supporting leg 41 is rotatably connected to the fixed seat 20, and the other end is a free end which can contact the external plane in the unfolded state of the support assembly 40 to provide stable support. One end of the connecting rod 42 is rotatably connected to the movable seat 30, and the other end is rotatably connected to the middle part of the supporting leg 41, so that the movement of the movable seat 30 can be effectively transmitted to the supporting leg 41 to drive the supporting leg 41 to unfold or fold synchronously.

[0036] As shown in Figures 1 to 3 , during the folding process of the support, the movable seat 30 moves towards the direction away from the fixed seat 20, thereby driving the connecting rod 42 to move upwards. The connecting rod 42 applies a driving force to the supporting leg 41, so that the included angle between the connecting rod 42 and the supporting leg 41 gradually increases to 180°, the free end of the supporting leg 41 is lifted upwards and folded together, and finally adheres to the outer circumferential side of the main rod 10 together with the connecting rod 42, thereby reducing the overall size after folding and improving the portability of the support. During the unfolding process of the support, the movable seat 30 moves towards the direction close to the fixed seat 20, so that the free end of the supporting leg 41 unfolds downwards, and finally forms a stable support structure on the external plane.

[0037] The support frame 100 adopts the reverse open frame design described above, so that when the support assembly 40 is folded, the supporting legs 41 are lifted upward and folded, and will not exceed the bottom end of the main rod 10. Without changing the overall storage length of the support frame 100, the length of the supporting leg 41 can be set to be long enough, thereby increasing the floor area and improving the stability and load-bearing capacity of the support frame 100.

[0038] Please refer to Figure 6 In some embodiments, the support frame 100 includes a plurality of first pivots 44, second pivots 45, and third pivots 46.

[0039] The first pivot 44 is arranged on the fixed seat 20, and the axis of the first pivot 44 extends along the radial direction of the fixed seat 20. The end of the supporting leg 41 close to the main rod 10 abuts against the outer side surface of the fixed seat 20 and is rotationally connected with the first pivot 44, and the supporting leg 41 can rotate around the axis of the first pivot 44.

[0040] The second pivot 45 is arranged on the moving seat 30, and the axis of the second pivot 45 extends along the radial direction of the moving seat 30. The second pivot 45 is arranged in one-to-one correspondence with the first pivot 44, and the line connecting the corresponding second pivot 45 and the first pivot 44 is the extension direction of the main rod 10. The end of the connecting rod 42 close to the main rod 10 abuts against the outer side surface of the moving seat 30 and is rotationally connected with the second pivot 45, and the connecting rod 42 can rotate around the axis of the second pivot 45.

[0041] The third pivot 46 is arranged through the middle of the supporting leg 41 and the end of the connecting rod 42 away from the main rod 10, so as to rotationally connect the connecting rod 42 to the side surface of the supporting leg 41. The axis of the third pivot 46 is parallel to the axes of the first pivot 44 and the second pivot 45, and the connecting rod 42 and the supporting leg 41 can rotate around the axis of the third pivot 46.

[0042] Specifically, the first pivot 44, the second pivot 45, and the third pivot 46 can all be rivets, and the number of the rivets corresponds to the number of the supporting legs 41. The rivets are used in cooperation with the washers to rotationally connect the supporting legs 41 and the connecting rods 42.

[0043] The first pivot 44 is used to hinge the supporting leg 41 to the side wall of the fixed seat 20, and the first pivot 44 is arranged along the radial direction of the fixed seat 20. The supporting leg 41 rotates around the axis of the first pivot 44, so that the supporting leg 41 can rotate in the outer side surface of the fixed seat 20, and then tightly fit the main rod 10 when folded, so as to optimize the storage volume. The second pivot 45 is used to hinge the connecting rod 42 to the side wall of the moving seat 30, and the second pivot 45 is arranged along the radial direction of the moving seat 30. The connecting rod 42 rotates around the axis of the second pivot 45, so that the connecting rod 42 can rotate in the outer side surface of the moving seat 30, and then tightly fit the outer peripheral wall of the main rod 10 when folded.

[0044] The third rotating shaft 46 is used to connect the link rod 42 and the supporting leg 41, and the axis of the third rotating shaft 46 is parallel to the axes of the first rotating shaft 44 and the second rotating shaft 45, which ensures that the whole supporting assembly 40 has a consistent movement track during the unfolding and folding processes, and avoids unexpected track deviation or jamming.

[0045] During the unfolding process of the supporting frame 100, the moving seat 30 moves along the main rod 10 towards the fixed seat 20, so as to drive the link rod 42 to rotate around the axis of the second rotating shaft 45. The distal end of the link rod 42 is forced to act on the third rotating shaft 46, so as to drive the supporting leg 41 to rotate around the first rotating shaft 44 to the unfolded position, and the free end of the supporting leg 41 contacts the external plane to form a stable supporting structure.

[0046] When the supporting frame 100 is folded, the moving seat 30 moves along the main rod 10 away from the fixed seat 20, and the link rod 42 reversely rotates around the second rotating shaft 45, so that the link rod 42 is attached to the outer side of the main rod 10, and the supporting leg 41 is lifted upwards towards the main rod 10 through the third rotating shaft 46. When the link rod 42 is attached to the outer side of the main rod 10, the supporting leg 41 gradually approaches the link rod 42, so that the supporting leg 41 is abutted on the outer side of the link rod 42 away from the main rod 10, thereby achieving a compact storage effect, and making it easier to carry and store.

[0047] In some embodiments, the supporting leg 41 and the link rod 42 and the rotating shafts can be in interference fit or tight fit, so as to have high friction damping characteristics, and thus the link rod 42 and the supporting leg 41 can be stably stopped at any angle during rotation, without accidental rotation or loosening due to gravity or other external forces.

[0048] In other embodiments, the first rotating shaft 44 can also be fixed on the outer side of the fixed seat 20 and protrude in the radial direction of the fixed seat 20, and the supporting leg 41 is rotationally connected to the first rotating shaft 44. The second rotating shaft 45 can also be fixed on the outer side of the moving seat 30 and protrude in the radial direction of the moving seat 30, and the link rod 42 is rotationally connected to the second rotating shaft 45. As long as the link rod 42 can rotate around the radial direction of the moving seat 30 and the supporting leg 41 can rotate around the radial direction of the fixed seat 20, the above-mentioned structure can be achieved.

[0049] Please refer to Figure 6 In some embodiments, the supporting leg 41 and the link rod 42 are flat rod structures. The link rod 42 and the supporting leg 41 are both provided with through holes 43 extending in the thickness direction thereof, and the through holes 43 are used for the hinge connection of the link rod 42 or the supporting leg 41. When the supporting assembly 40 is folded, the supporting leg 41 covers the link rod 42.

[0050] Specifically, the support leg 41 and the connecting rod 42 are both in a flat rod structure, which can make the support assembly 40 closely stacked in the folded state, reduce the overall storage diameter of the support frame 100, improve portability, and reduce the space occupied during transportation or storage. The support leg 41 and the connecting rod 42 are provided with a through hole 43 extending along the thickness direction thereof, the through hole 43 is used to accommodate the first rotating shaft 44, the second rotating shaft 45 or the third rotating shaft 46, thereby realizing the hinge connection of the support leg 41 and the connecting rod 42, so that the support assembly 40 can be smoothly unfolded and folded.

[0051] Please refer to Figure 7 and Figure 8 In some embodiments, the fixed seat 20 and the moving seat 30 have substantially the same outer shape structure, both of which include a seat body 21 and an outer tangent plane 22. The structure of the fixed seat 20 will be described in detail.

[0052] As Figure 7 shown, the seat body 21 of the fixed seat 20 is in a circular ring shape, and the outer tangent plane 22 thereof is provided with a plurality of outer tangent planes 22 arranged at intervals around the outer side wall of the seat body 21. The outer tangent plane 22 is provided with a connecting hole 23, the axis of the connecting hole 23 is perpendicular to the outer tangent plane 22, and the connecting hole 23 is used to connect the support assembly 40, so that the support leg 41 and the connecting rod 42 can rotate in the plane where the outer tangent plane 22 is located.

[0053] Among them, the seat body 21 adopts a circular ring structure, which can be sleeved at the bottom of the main rod 10 and bolted or welded on the main rod 10. The outer tangent planes 22 are arranged at intervals along the outer side wall of the seat body 21, that is, the outer tangent planes 22 are equivalent to cutting a plurality of flat mounting surfaces on the circular ring-shaped seat body 21, so that they can provide better contact area when connecting the support leg 41, avoiding assembly errors or loose problems caused by curved surface connection.

[0054] Each outer tangent plane 22 is provided with a connecting hole 23, the axis of the connecting hole 23 is perpendicular to the outer tangent plane 22, the first rotating shaft 44 can be arranged in the through hole 43 of the support leg 41 and the connecting hole 23 on the fixed seat 20, the side surface of the support leg 41 abuts against the outer tangent plane 22 of the fixed seat 20, and the support leg 41 can rotate in the plane where the outer tangent plane 22 of the fixed seat 20 is located. The second rotating shaft 45 can be arranged in the through hole 43 on the connecting rod 42 and the connecting hole 23 on the moving seat 30, so that the connecting rod 42 can rotate in the plane where the outer tangent plane 22 of the moving seat 30 is located. When the support frame 100 is unfolded or folded, the rotating direction of the support leg 41 and the connecting rod 42 always matches the outer tangent plane 22, which can avoid unnecessary lateral shaking.

[0055] In other embodiments, the seat body 21 can adopt a polygonal structure, such as a regular hexagon or a regular octagon, to provide more fixing positions, which is suitable for more support frames 100 with support legs 41.

[0056] Referring to Figure 7 In some embodiments, the seat body 21 is provided with a plurality of abutting platforms 24 arranged on the outer side wall of the seat body 21 and connected with the outer tangent plane 22. The abutting platform 24 has opposite abutting surfaces 241 and inclined surfaces 242, the abutting surfaces 241 are perpendicular to the outer tangent plane 22, and the inclined surfaces 242 are tangent to the outer side surface of the seat body 21.

[0057] The abutting platform 24 is arranged on the outer side wall of the seat body 21 and connected with the outer tangent plane 22, when the support frame 100 is in the folded state, one side wall of the supporting leg 41 and the connecting rod 42 can be in contact with the abutting surface 241 of the abutting platform 24, thereby forming a stable limiting effect. So that the supporting leg 41 and the connecting rod 42 can only be unfolded in one direction of the hour hand, thereby limiting the rotation range of the supporting leg 41 and the connecting rod 42, so as to prevent excessive rotation of the supporting leg 41 and the connecting rod 42 when being stored. The inclined surface 242 of the abutting platform 24 away from the abutting surface 241 is tangent to the outer side surface of the seat body 21, which can smoothly transition the abutting platform 24 on the fixed seat 20 and the moving seat 30, so as to facilitate the holding or storage of the support frame 100.

[0058] Referring to Figure 6 and Figure 9 In some embodiments, the support frame 100 further comprises a locking unit 50, the locking unit 50 is fixed on the moving seat 30 and can move with the moving seat 30, and the locking unit 50 can fix and lock the moving seat 30 at any position of the main rod 10.

[0059] The locking unit 50 can move axially along the main rod 10 with the moving seat 30 in the unlocked state, and when reaching the predetermined position, the locking unit 50 can fix the moving seat 30 by clamping, buckling or other locking methods, so that it cannot slide at will, thereby ensuring the stability of the overall structure.

[0060] Referring to Figure 6 , Figure 8 and Figure 9 In some embodiments, the locking unit 50 comprises a threaded sleeve 51 and a knob 52, and the threaded sleeve 51 and the knob 52 are arranged on the main rod 10.

[0061] The screw sleeve 51 comprises a bottom plate 511 and a screw pipe 512 fixed on the bottom plate 511. The bottom plate 511 is fixedly connected with the moving seat 30, and the screw pipe 512 is arranged on the side of the bottom plate 511 away from the moving seat. The screw pipe 512 is provided with vertical grooves 513, and the knob 52 is threadedly connected with the screw pipe 512. When the knob 52 is rotated in one direction, the screw pipe 512 can be tightly pressed against the outer side surface of the main rod 10 to lock the moving seat 30. When the knob 52 is reversely rotated, the screw pipe 512 is released from the pressing against the main rod 10, so that the moving seat 30 can move along the axial direction of the main rod 10.

[0062] Specifically, the moving seat 30 is provided with a first through hole 31 vertically penetrating through the moving seat 30, and the bottom plate 511 of the screw sleeve 51 is provided with a second through hole 514 corresponding to the first through hole 31. A screw bolt can pass through the first through hole 31 and the second through hole 514 to fix the locking unit 50 and the moving seat 30. Of course, the bottom plate 511 of the screw sleeve 51 and the moving seat 30 can also be fixed by welding, clamping or other methods.

[0063] The screw pipe 512 of the screw sleeve 51 is arranged on the side of the bottom plate 511 away from the moving seat 30, and the outer side surface of the screw pipe 512 is provided with external threads for threadedly connecting with the knob 52. The screw pipe 512 is provided with a plurality of vertical grooves 513 spaced from each other, and the vertical grooves 513 extend vertically to provide a gap for the local elastic deformation of the screw pipe 512, so that the diameter of the screw pipe 512 can be changed to realize the clamping of the main rod 10.

[0064] For example, when the knob 52 is rotated in the forward direction, the inner wall of the screw pipe 512 gradually abuts against and applies radial pressure to the outer side surface of the main rod 10, thereby forming a stable clamping effect to fix the moving seat 30 at a predetermined position of the main rod 10. When the knob 52 is reversely rotated, the knob 52 is retracted outward, i.e., the pressing of the screw pipe 512 against the main rod 10 is released, so that the moving seat 30 can freely move along the axial direction of the main rod 10, to facilitate the user to adjust the height or angle of the support frame 100. Through the cooperation of the screw sleeve 51 and the knob 52, the user can manually and quickly adjust the locking state without the need of additional tools, thereby improving the convenience of operation.

[0065] It is conceivable that in other embodiments, the locking unit 50 can adopt a screw clamping handle which can press the surface of the main rod 10 to realize stepless locking. The locking unit 50 can also adopt a spring buckle structure, so that the buckle is automatically embedded into the limiting hole on the main rod 10 to provide a quick locking and releasing function. The locking unit 50 can also adopt a wedge clamping mechanism which utilizes the radial clamping force generated when the wedge block slides along the axial direction of the main rod 10 to fix the moving seat 30, thereby improving the locking stability. As long as the locking unit 50 can realize the locking and unlocking between the moving seat 30 and the main rod 10, it is acceptable.

[0066] Please refer to Figure 6In some embodiments, the main rod 10 comprises a plurality of rod bodies 12 of different diameters connected in sequence, each rod body 12 is slidingly connected with the adjacent rod body 12, and the smaller-diameter rod body 12 between the adjacent rod bodies 12 can be retracted into the larger-diameter rod body 12.

[0067] Specifically, the diameter of each rod body 12 gradually increases from the end away from the fixed seat 20 to the end close to the fixed seat 20, so as to form the main rod 10 with gradually increasing diameter towards the fixed seat 20. The smaller-diameter rod body 12 can be retracted into the adjacent larger-diameter rod body 12, so that the main rod 10 can be shortened as a whole, thereby further improving the portability and storage efficiency.

[0068] In some embodiments, the sliding connection between each rod body 12 can be achieved by providing a guide groove and a limiting block, so that the rod body 12 can maintain stable linear motion during the extension and retraction process, thereby avoiding affecting the stability of the overall structure due to shaking or axis deviation. At the same time, in order to ensure the fixing effect of the main rod 10 at different length positions, the sliding connection between each rod body 12 can be achieved by means of tight fit, buckle structure or elastic locking device, so as to prevent accidental sliding or retraction of the main rod 10.

[0069] In some embodiments, the end of the main rod 10 away from the support assembly 40 is provided with an adapter 11, which can be used to connect external electronic devices. The adapter 11 can be a standardized interface or connection structure, which can be connected with different types of external electronic devices, such as cameras, video cameras, projectors, lighting devices, etc. so that the external devices can be fixed, thereby enhancing the functionality and applicability of the devices.

[0070] In summary, the present application provides a support stand 100, which comprises a main rod 10, a fixed seat 20 fixed on the main rod 10, a moving seat 30 slidingly connected with the main rod 10, and a support assembly 40 rotatably connected with the fixed seat 20 and the moving seat 30. When the moving seat 30 moves towards the direction away from the fixed seat 20, the connecting rod 42 of the support assembly 40 drives the free end of the supporting leg 41 to lift upwards towards the main rod 10, so that the supporting leg 41 and the connecting rod 42 are retracted to the outer circumferential side of the main rod 10. When the moving seat 30 moves towards the direction close to the fixed seat 20, the connecting rod 42 drives the supporting leg 41 to move downwards and expand, so as to be supported on the external plane. The support stand 100 adopts a reverse opening design, which can set the length of the supporting leg 41 to be longer without changing the overall length of the support stand 100, thereby increasing the floor area and improving the stability and load-bearing capacity of the support stand 100.

[0071] While the present application has been described with reference to several exemplary embodiments, it is understood that the words that have been used are words of description and illustration, rather than words of limitation. As mentioned above, the present application is capable of taking many forms of implementation and being practiced in various ways, and the above description is not intended to limit the application in any way, except as required by the appended claims and their equivalents.

Claims

1. A support frame, characterized by, The support frame comprises a main rod, a fixed base fixedly arranged at the bottom end of the main rod, a movable base movably connected to the main rod, the movable base being movable along the axial extension direction of the main rod, a support assembly comprising at least three supporting legs and connecting rods corresponding to the supporting legs, the supporting legs being arranged at intervals along the circumferential direction of the fixed base and being rotatably connected to the fixed base, one end of the connecting rod being rotatably connected to the movable base, and the other end of the connecting rod being rotatably connected to the supporting leg. The support frame comprises a plurality of first rotation shafts arranged on the fixed base, the axial lines of the first rotation shafts extending along the radial direction of the fixed base, one end of the supporting leg close to the main rod being abutted against the outer side surface of the fixed base and being rotatably connected to the first rotation shaft, and the supporting leg being rotatable about the axial line of the first rotation shaft. The support frame comprises a plurality of second rotation shafts arranged on the movable base, the axial lines of the second rotation shafts extending along the radial direction of the movable base, the second rotation shafts corresponding to the first rotation shafts, the connecting lines of the corresponding second rotation shafts and first rotation shafts being the extension direction of the main rod, one end of the connecting rod close to the main rod being abutted against the outer side surface of the movable base and being rotatably connected to the second rotation shaft, and the connecting rod being rotatable about the axial line of the second rotation shaft. The support frame comprises a plurality of third rotation shafts arranged in the middle part of the supporting leg and the end of the connecting rod away from the main rod, so as to rotatably connect the connecting rod to the side surface of the supporting leg, the axial line of the third rotation shaft being parallel to the axial lines of the first rotation shaft and second rotation shaft, and the connecting rod and the supporting leg being rotatable about the axial line of the third rotation shaft. The fixed base and the movable base each comprise a base body and a plurality of tangent planes, the base body being annular, the tangent planes being arranged at intervals on the outer side wall of the base body, the tangent planes being provided with connecting holes, the axial lines of the connecting holes being perpendicular to the tangent planes, the connecting holes being used for connecting the support assembly, and the supporting leg and the connecting rod being rotatable in the plane where the corresponding tangent plane is located. The base body is provided with a plurality of abutting platforms arranged on the outer side wall of the base body and connected to the tangent planes, the abutting platforms having opposite abutting surfaces and inclined surfaces, the abutting surfaces being perpendicular to the tangent planes, and the inclined surfaces being tangent to the outer side surface of the base body. The support frame further comprises a locking unit fixed to the movable base and movable along with the movable base, the locking unit being capable of fixing and locking the movable base at any position of the main rod.

2. The support frame of claim 1, wherein ​ 3. The support frame of claim 2, wherein, ​ 4. The support frame of claim 3, wherein, ​ 5. The support frame of claim 1, wherein ​ 6. The support frame of claim 5, wherein, ​ 7. The support frame of claim 1, wherein ​ 8. The support frame of claim 7, wherein, The locking unit comprises a sleeve and a knob, the sleeve and the knob are arranged on the main rod; the sleeve comprises a bottom plate and a screw pipe fixed on the bottom plate, the bottom plate is fixedly connected with the moving seat, the screw pipe is arranged on the side of the bottom plate away from the moving seat, and a vertical groove is formed in the screw pipe; the knob is threadedly connected with the screw pipe; when the knob rotates, the screw pipe is tightly pressed on the outer side of the main rod to lock the moving seat; when the knob reversely rotates, the screw pipe is released from the pressing of the main rod, so that the moving seat can move along the axial direction of the main rod.

9. The support frame of claim 1, wherein, The supporting leg and the connecting rod are flat rod structures; the connecting rod and the supporting leg are provided with through holes extending along the thickness direction thereof, and the through holes are used for the hinging of the connecting rod or the supporting leg; when the supporting assembly is folded, the supporting leg can cover the outer side of the connecting rod away from the main rod.

10. The support frame of claim 1, wherein, The main rod comprises a plurality of rod bodies with different diameters connected in sequence, each of the rod bodies is in sliding connection, and the smaller diameter rod body between the two adjacent rod bodies can be contracted in the larger diameter rod body.

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