Supporting leg movable structure

Abstract

The embodiment of the invention provides a supporting leg moving structure, which belongs to the technical field of auxiliary articles of electronic terminals, is used as a part of a multi-leg bracket, and is characterized by comprising a supporting rod assembly, a sliding sleeve assembly, a supporting leg assembly, a connecting rod and a preliminary opening piece, the preliminary opening piece is provided with a touch part, and the touch part corresponds to the supporting leg assembly; in the process that the preliminary opening piece rotates from the initial position to the second position, the touch part touches the corresponding supporting leg assembly so that the supporting leg assembly can be folded relative to the supporting rod assembly to be preliminarily opened relative to the supporting rod assembly. Therefore, the supporting leg assembly can be unfolded relative to the supporting rod assembly.

Description

[0001] Cross-reference of related inventions

[0002] This invention claims priority and benefits from the following patent applications:

[0003] Chinese Patent Application No. 2025110067379, entitled "A Multi-Legged Stand," filed on July 21, 2025; Chinese Patent Application No. 2025109606617, entitled "A Multi-Legged Stand and Electronic Terminal Support Device," filed on July 11, 2025; Chinese Patent Application No. 2024112802562, entitled "A Multi-Legged Stand and Electronic Terminal Support Device," filed on September 12, 2024; Chinese Patent Application No. 2024110645088, entitled "A Multi-Legged Stand, an Electronic Terminal Stand, and a Method of Using a Multi-Legged Stand," filed on August 5, 2024; Chinese Patent Application No. 2024110663245, entitled "A Movable Support Leg Knot," filed on August 5, 2024; and their entire contents are incorporated herein by reference. Technical Field

[0004] This invention relates to the field of auxiliary equipment technology for electronic terminals or shooting aids, and more particularly to a movable support structure. Background Technology

[0005] Stands are primarily used to hold and support electronic devices such as tablets and mobile phones, facilitating shooting. They are also used to support shooting aids. Currently, the market offers a wide variety of stands in terms of materials and functions. For example, multi-leg stands have emerged, where the multiple legs can be adjusted to change their opening degree.

[0006] Existing multi-leg supports generally include a support rod assembly and at least three support leg assemblies. These at least three support leg assemblies can be opened or closed relative to the support rod assembly. In the opened state, the at least three support leg assemblies can support a support surface. In the closed state, the support leg assemblies are closed relative to the support rod assembly. However, in existing multi-leg supports, it is not easy for the support leg assemblies to change from a closed state to an open state relative to the support rod assembly. Summary of the Invention

[0007] One of the objectives of this invention is to provide a movable support structure to solve the problem that the support leg assembly of existing multi-leg brackets is not easy to change from a folded state to an open state.

[0008] The application provides a support leg movable structure as a part of a multi-leg support, characterized in that the support leg movable structure comprises a support rod assembly, a sliding sleeve assembly, a support leg assembly, a connecting rod and a preliminary opening piece, the sliding sleeve assembly is sleeved on the support rod assembly along the length direction of the support rod assembly; the support leg assembly is rotationally connected to the sliding sleeve assembly; one end of the connecting rod is rotationally connected to the support rod assembly, and the other end is rotationally connected to the support leg assembly, the support leg assembly can be opened or folded relative to the support rod assembly; in the initial state, the support leg assembly is kept in the state of being folded on the support rod assembly; in the state that the support leg assembly is opened relative to the support rod assembly, the support leg assembly can be supported on a support surface; an external action applied to the preliminary opening piece can make the preliminary opening piece translate relative to the support rod assembly along a first direction, the preliminary opening piece has a touch pushing part corresponding to the support leg assembly; in the process that the preliminary opening piece is rotated from the initial position to a third position, the touch pushing part touches the corresponding support leg assembly to make the support leg assembly fold relative to the support rod assembly to be preliminarily opened relative to the support rod assembly.

[0009] Compared with the prior art, the support leg movable structure has the beneficial effect that the support leg assembly of the terminal support device is preliminarily opened relative to the support rod assembly, so that the support leg assembly is easy to be opened relative to the support rod assembly, and the use of the terminal support device is facilitated.

[0010] The application also provides a support leg movable structure as a part of a multi-leg support, characterized in that the support leg movable structure comprises a support rod assembly, a sliding sleeve assembly, a support leg assembly, a connecting rod and a preliminary opening piece, the sliding sleeve assembly is sleeved on the support rod assembly along the length direction of the support rod assembly; the support leg assembly is rotationally connected to the sliding sleeve assembly; one end of the connecting rod is rotationally connected to the support rod assembly, and the other end is rotationally connected to the support leg assembly, the support leg assembly can be opened or folded relative to the support rod assembly; in the initial state, the support leg assembly is kept in the state of being folded on the support rod assembly; in the state that the support leg assembly is opened relative to the support rod assembly, the support leg assembly can be supported on a support surface; an external action applied to the preliminary opening piece can make the preliminary opening piece translate relative to the support rod assembly along a first direction, the preliminary opening piece has a touch pushing part corresponding to the support leg assembly; in the process that the preliminary opening piece is rotated from the initial position to a third position, the touch pushing part touches the corresponding support leg assembly to make the support leg assembly fold relative to the support rod assembly to be preliminarily opened relative to the support rod assembly.

[0011] Compared with the prior art, the beneficial effect of the movable support structure of this application is that the support foot assembly of the terminal support device in the embodiment of the present invention is initially opened relative to the support rod assembly, so that the support foot assembly is easy to open relative to the support rod assembly, thereby facilitating the use of the terminal support device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of a multi-leg bracket according to an embodiment of the present invention. In this schematic diagram, the three support leg assemblies of the multi-leg bracket are in a retracted state relative to the support rod assembly.

[0014] Figure 2 yes Figure 1 A schematic diagram of the multi-legged support structure from another perspective;

[0015] Figure 3 yes Figure 2 An enlarged view of the structure at point A in the multi-legged support shown;

[0016] Figure 4 yes Figure 1 The multi-legged bracket shown is a front view in a certain direction;

[0017] Figure 5 yes Figure 4 The cross-sectional view of the multi-legged bracket shown along line II;

[0018] Figure 6 yes Figure 5 An enlarged view of the structure at point B in the structure shown;

[0019] Figure 7 yes Figure 2 The diagram shows the structure of the initial opening component in the multi-legged bracket.

[0020] Figure 8 yes Figure 7 A structural schematic diagram of the pre-opened component from another perspective;

[0021] Figure 9 yes Figure 6 The diagram shows the structural schematic of the mounting components in the structure shown.

[0022] Figure 10 yes Figure 9 A structural schematic diagram of the mounting component from another perspective;

[0023] Figure 11 is Figure 6 is an exploded view of the mounting member, the preliminary opening member, the return spring, and the like in the structure shown in FIG. 1;

[0024] Figure 12 is Figure 11 is an exploded view of the structure shown in FIG. 1 from another perspective;

[0025] Figure 13 is Figure 1 is a structural view of the multi-legged support shown in FIG. 1 when the three support leg assemblies are preliminarily opened with respect to the support rod assembly, in which the preliminary opening member is in the second position;

[0026] Figure 14 is Figure 13 is a structural view of the multi-legged support shown in FIG. 1 from another perspective;

[0027] Figure 15 is Figure 14 is an enlarged view of the structure at C in the multi-legged support shown in FIG. 1;

[0028] Figure 16 is Figure 13 is a front view of the multi-legged support shown in FIG. 1 in a certain direction;

[0029] Figure 17 is Figure 16 is a sectional view of the multi-legged support shown in FIG. 1 along line II-II;

[0030] Figure 18 is Figure 17 is an enlarged view of the structure at D in the multi-legged support shown in FIG. 1;

[0031] Figure 19 is Figure 1 is a structural view of the multi-legged support shown in FIG. 1 when the three support leg assemblies are opened with respect to the support rod assembly;

[0032] Figure 20 is Figure 19 is a sectional view of the multi-legged support shown in FIG. 1 along line III-III;

[0033] Figure 21 is Figure 20 is an enlarged view of the structure at E in the multi-legged support shown in FIG. 1;

[0034] Figure 22 is Figure 19 is a structural view of the slide sleeve assembly in the multi-legged support shown in FIG. 1;

[0035] Figure 23 is Figure 19 is a structural view of the support leg assembly in the multi-legged support shown in FIG. 1;

[0036] Figure 24 yes Figure 23 An enlarged view of the structure at point F in the support leg assembly shown;

[0037] Figure 25 yes Figure 23 An enlarged view of the structure at point G in the support leg assembly shown;

[0038] Figure 26 yes Figure 23 An enlarged view of the structure at point H in the support leg assembly shown;

[0039] Figure 27 yes Figure 19 The diagram shows the structure of the connecting rod in the multi-legged bracket.

[0040] Figure 28 This is a schematic diagram of the structure of the terminal support device according to an embodiment of the present invention;

[0041] Figure 29 This is a schematic diagram of another embodiment of the multi-leg bracket of the present invention. In this schematic diagram, the three support leg assemblies of the multi-leg bracket are in a retracted state relative to the support rod assembly.

[0042] Figure 30 yes Figure 29 An enlarged view of the structure at point A in the multi-legged support shown;

[0043] Figure 31 yes Figure 29 The multi-legged bracket shown is a front view in a certain direction;

[0044] Figure 32 yes Figure 31 A partial sectional view of the multi-legged bracket shown along line BB;

[0045] Figure 33 yes Figure 32 An enlarged view of the structure at point C in the multi-legged support shown;

[0046] Figure 34 yes Figure 29 The diagram shows the assembly of the initial opening components, mounting components, and other structures in the multi-legged bracket.

[0047] Figure 35 This is a schematic diagram of the structure shown in Figure 34 from another perspective;

[0048] Figure 36 yes Figure 34 The diagram shows the structural schematic of the mounting components in the structure shown.

[0049] Figure 37 yes Figure 34 The diagram shows the initial opening component and the return spring in the structure shown.

[0050] Figure 38 is Figure 29 the structure of the multi-legged support shown in FIG. 3, in which the preliminary opening member is in the third position;

[0051] Figure 39 is Figure 38 the structure of the multi-legged support shown in FIG. 3, in which the preliminary opening member is in the second position;

[0052] Figure 40 is Figure 38 the front view of the multi-legged support shown in FIG. 3;

[0053] Figure 41 is Figure 40 the partial sectional view of the multi-legged support shown in FIG. 3 along line E-E;

[0054] Figure 42 is Figure 41 the structure of the multi-legged support shown in FIG. 3, in which the preliminary opening member is in the second position;

[0055] Figure 43 is Figure 29 the front view of the multi-legged support shown in FIG. 3;

[0056] Figure 44 is the partial sectional view of the multi-legged support shown in FIG. 3 along line H-H;

[0057] Figure 45 Figure 44 is the front view of the multi-legged support shown in FIG. 3;

[0058] Figure 46 Figure 45 is the partial sectional view of the multi-legged support shown in FIG. 3 along line J-J;

[0059] Figure 47 Figure 46 is the partial sectional view of the multi-legged support shown in FIG. 3 along line J-J;

[0060] Figure 48 Figure 29 is the front view of the multi-legged support shown in FIG. 3;

[0061] Figure 49 Figure 48 is the partial sectional view of the multi-legged support shown in FIG. 3 along line J-J;

[0062] Figure 50 Figure 49 is the structure of the multi-legged support shown in FIG. 3, in which the preliminary opening member is in the second position;

[0063] Figure 51 is Figure 29 a structural diagram of a support leg assembly in the multi-leg support shown in Fig. 1;

[0064] Figure 52 is Figure 51 an enlarged view of the structure at L in the support leg assembly shown in Fig. 2;

[0065] Figure 53 is Figure 51 an enlarged view of the structure at M in the support leg assembly shown in Fig. 3;

[0066] Figure 54 is Figure 48 a structural diagram of a connecting rod in the multi-leg support shown in Fig. 4;

[0067] Figure 55 is Figure 48 a structural diagram of a sliding sleeve assembly in the multi-leg support shown in Fig. 5;

[0068] Figure 56 is an assembly diagram of the mounting member and the preliminary opening member in another embodiment of the multi-leg support of the present application;

[0069] Figure 57 is Figure 56 a top view of the structure shown in Fig. 6;

[0070] Figure 58 is Figure 57 a sectional view along the line IV-IV in Fig. 6;

[0071] Figure 59 is Figure 56 an exploded diagram of the structure shown in Fig. 7;

[0072] Figure 60 is Figure 56 a structural diagram of the preliminary opening member in the structure shown in Fig. 7;

[0073] Figure 61 is Figure 56 a structural diagram of the mounting member in the structure shown in Fig. 7;

[0074] Figure 62 is Figure 61 a structural diagram of the mounting member from another angle in the structure shown in Fig. 7;

[0075] Figure 63 is Figure 60 a structural diagram of the preliminary opening member in the structure shown in Fig. 7;

[0076] Figure 64 is Figure 63 a diagram of the preliminary opening member from another angle shown in Fig. 7;

[0077] Figure 65 is Figure 60 Fig. 2 is a schematic view of the structure of the movable member of the preliminary opening member shown in Fig. 1;

[0078] Figure 66 Fig. 4 is a schematic view of the structure of another embodiment of the multi-leg support of the present application, in which three support leg assemblies of the multi-leg support are in a folded state relative to the support rod assembly;

[0079] Figure 67 Fig. 5 is a schematic view of the structure of still another embodiment of the multi-leg support of the present application, in which four support leg assemblies of the multi-leg support are in a folded state relative to the support rod assembly;

[0080] Figure 68 Fig. 6 is a cross-sectional view of one angle of the multi-leg support shown in Fig. 1; Figure 67

[0081] Figure 69 Fig. 7 is an enlarged view of the structure at N in the support leg assembly shown in Fig. 6. Figure 68 Reference Numerals

[0082]

[0083] ​​The first group: support rod assembly 100, support rod body 110, first outer peripheral wall 111, mounting piece 120, first mounting sub-piece 120a, second mounting sub-piece 120b, abutting table top 1211, second screw 121, blocking part 122, second clamping part 122a, separation protrusion 122b, mounting part 123, mounting protrusion 124, third fastener 125, second fastener 130, second head part 131, second rod part 132, mounting cavity 101, second abutting wall 102, through hole 103, mounting hole 104, sliding groove 105, third rotating part 106, sliding sleeve assembly 200, sliding bar 210, main cylinder 220, avoiding gap 221, positioning cylinder 230, sliding cavity 201, first rotating part 202, support leg assembly 300, first outer peripheral surface 3111, anti-pinch groove 3112, positioning insertion groove 3113, positioning protrusion 3114, support leg body 310, second rotating part 311, clamping groove 312, first mounting opening 313, magnetic attraction piece 320, non-slip pad 330, fifth rotating part 301, contact surface 302, connecting rod 400, fourth rotating part 410, sixth rotating part 420, preliminary opening piece 500, first screw 510, mounting column 520, movable piece 522, guide part 523, matching part 525, force applying piece 526, elastic piece 527, guide groove 528, protruding block 529, connecting column 530, touching part 540, adjusting piece 550, pressure applying part 560, pushing part 570, resisting piece 580, first clamping part 581, first side part 581a, fourth fastener 590, rotation axis 501, containing cavity 502, first abutting wall 503, first end surface 504, force applying space 505, return spring 610, first fastener 620, first head part 621, bearing piece 720, connecting arm 710. DETAILED DESCRIPTION

[0084] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0085] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0086] The embodiments of the present application provide a multi-leg support, referring to Figures 1-27 , or referring to Figures 29-55, or refer to Figures 56-66 The multi-leg support comprises a support rod assembly 100, a sliding sleeve assembly 200, at least three support leg assemblies 300, at least three connecting rods 400, and a preliminary opening member 500. The sliding sleeve assembly 200 is sleeved on the support rod assembly 100 along the length direction of the support rod assembly 100. The at least three support leg assemblies 300 are respectively rotationally connected to the sliding sleeve assembly 200. The at least three connecting rods 400 correspond to the at least three support leg assemblies 300 respectively. One end of the connecting rod 400 is rotationally connected to the support rod assembly 100, and the other end is rotationally connected to the corresponding support leg assembly 300. The at least three support leg assemblies 300 can be spread or folded relative to the support rod assembly 100. In the initial state, the at least three support leg assemblies 300 are kept in the state of being folded on the support rod assembly 100. In the state that the at least three support leg assemblies 300 are spread relative to the support rod assembly 100, the at least three support leg assemblies 300 can be supported on a support surface. A first external action applied to the preliminary opening member 500 can make the preliminary opening member 500 rotate relative to the support rod assembly 100. The preliminary opening member 500 has at least three triggering portions 540, which correspond to the at least three support leg assemblies 300 respectively. In the process that the preliminary opening member 500 rotates from the initial position to the second position, the triggering portion 540 triggers the corresponding support leg assembly 300 to make the at least three support leg assemblies 300 change from being folded relative to the support rod assembly 100 to being preliminarily opened relative to the support rod assembly 100, so as to facilitate the at least three support leg assemblies 300 to be spread relative to the support rod assembly 100. Understandably, the rotation of the preliminary opening member 500 relative to the support rod assembly 100 makes the at least three support leg assemblies 300 preliminarily open relative to the support rod assembly 100, so that the at least three support leg assemblies 300 are more easily spread relative to the support rod assembly 100, and the use of the multi-leg support is facilitated.

[0087] Understandably, in the process that the triggering portion 540 triggers the corresponding support leg assembly 300 to make the at least three support leg assemblies 300 change from being folded relative to the support rod assembly 100 to being preliminarily opened relative to the support rod assembly 100, the triggering portion 540 rotates relative to the support rod assembly 100 and pries open the corresponding support leg assembly 300 to make the at least three support leg assemblies 300 change from being folded relative to the support rod assembly 100 to being preliminarily opened relative to the support rod assembly 100.

[0088] For example, the multi-leg support of the embodiment of the present application can be used for supporting electronic terminals and / or shooting auxiliary supplies. The electronic terminal can be a mobile phone, a tablet, a camera, etc. The shooting auxiliary supply can be a light supplement, a remote controller, a camera, etc.

[0089] For example, the support rod assembly 100 is telescopic in the length direction thereof to meet different support height requirements of users, thereby improving the versatility of the product, or the support rod assembly 100 is of a fixed length; for example, the support rod assembly 100 comprises a plurality of telescopic sections, the plurality of telescopic sections comprising a first telescopic section, and the sleeve assembly 200 is sleeved on the first telescopic section. The number of the support leg assemblies 300 can be three, four, etc., and the number of the connecting rods 400 can be three, four, etc., and the number of the connecting rods 400 is the same as that of the support leg assemblies 300; during the process that the at least three support leg assemblies are unfolded or folded relative to the support rod assembly 100, the sleeve assembly 200, the support rod assembly 100, the support leg assemblies 300 and the connecting rods 400 are linked together; the sleeve assembly 200, the support rod assembly 100, the support leg assemblies 300 and the corresponding connecting rods 400 constitute a planar four-bar linkage mechanism, and specifically, the planar four-bar linkage mechanism can be a crank slider mechanism, a rocker slider mechanism, etc. During the process that the support leg assemblies 300 are unfolded relative to the support rod assembly 100, the sleeve assembly 200 slides relative to the support rod assembly 100; the support leg assemblies 300 are unfolded to different degrees relative to the support rod assembly 100, and the sleeve assembly 200 is located at different positions of the support rod assembly 100.

[0090] For example only, the support rod assembly 100 has a central axis extending in the longitudinal direction, for example, the central axis of the support rod assembly 100 extends along the length direction of the support rod assembly 100; for example, the sleeve assembly 200 is sleeved on the periphery of the support rod assembly 100 along the central axis. The support rod assembly 100 extends in the longitudinal direction, the support rod assembly 100 provides positioning and guidance for the sliding of the sleeve assembly 200, and can improve the stability of the entire multi-leg support. For example, the part of the support rod assembly 100 that is in sliding fit with the sleeve assembly 200 is cylindrical to ensure the smoothness of the sliding of the sleeve assembly 200. For example only, the rotation axis of the preliminary opening piece 500 extends along the length direction of the support rod assembly 100, specifically, the rotation axis of the preliminary opening piece 500 is parallel to the central axis of the support rod assembly 100, and more specifically, the rotation axis of the preliminary opening piece 500 is coaxial with the central axis of the support rod assembly 100. For other examples, the rotation axis of the preliminary opening piece 500 is not parallel to the length direction of the support rod assembly 100, and the rotation axis of the preliminary opening piece 500 is not parallel to the central axis of the support rod assembly 100.

[0091] For example only, the sleeve assembly 200 is sleeved on the periphery of the support rod assembly 100, the support rod assembly 100 extends from the top end of the sleeve assembly 200, and the support leg assemblies 300 are rotationally connected to the bottom end of the main cylinder of the sleeve assembly 200.

[0092] For example, the support rod assembly 100 has a first outer peripheral wall 111, the sliding sleeve assembly 200 is sleeved on the first outer peripheral wall 111 of the support rod assembly 100, and specifically, the first outer peripheral wall 111 is located at the first telescopic joint. A sliding gap is formed between the first outer peripheral wall 111 of the support rod assembly 100 and the inner peripheral wall of the sliding sleeve assembly 200, so that the friction between the support rod assembly 100 and the sliding sleeve assembly 200 is smaller or close to zero, and the sliding of the support rod assembly 100 and the sliding sleeve assembly 200 is smoother and unobstructed, so that the multi-leg support is more quickly and conveniently opened and folded. In an example, a rolling element is arranged between the inner peripheral wall of the sliding sleeve assembly 200 and the inner peripheral wall of the support rod assembly 100. For example, the rolling element can be a ball, a rolling bearing or the like structure, which can ensure smooth sliding of the sliding assembly and the support rod assembly 100 while reducing friction. In order to ensure overall consistency, generally, the cross section of the sliding sleeve assembly 200 is circular.

[0093] In order to avoid shaking when the support rod assembly 100 and the sliding sleeve assembly 200 slide relative to each other, the gap between the outer peripheral wall of the support rod assembly 100 and the inner peripheral wall of the sliding sleeve assembly 200 can be limited. For example, in some embodiments, the sliding gap between the outer peripheral wall of the support rod assembly 100 and the inner peripheral wall of the sliding sleeve assembly 200 is greater than or equal to 0.1 mm and less than or equal to 1.5 mm. In this way, while ensuring the clearance fit sliding between the support rod assembly 100 and the sliding sleeve assembly 200, shaking is avoided when the support rod assembly 100 and the sliding sleeve assembly 200 slide relative to each other, so that the multi-leg support is more reliable when opened and folded automatically.

[0094] For example, when the at least three support leg assemblies 300 are folded relative to the support rod assembly 100, the at least three support leg assemblies 300 can be held by a user, for example, when the support rod assembly 100 supports an electronic terminal, the user can hold the at least three support leg assemblies 300 to take a selfie. In some cases, when the at least three support leg assemblies 300 are folded relative to the support rod assembly 100, the connecting rod 400 is folded in the support rod assembly 100, and the connecting rod 400 is located between the support rod assembly 100 and the corresponding support leg assembly 300.

[0095] For example, in order to reduce costs and improve aesthetics, generally, the shapes and sizes of the at least three support leg assemblies 300 are substantially the same. When the multi-leg support is suitable for a mobile phone, the multi-leg support can also be set as a remote-controlled selfie stick. For example, a mounting groove for accommodating a remote controller can be arranged on one of the support leg assemblies 300. The remote controller can be fixedly installed in the mounting groove or detachably installed in the mounting groove. The remote controller can be a Bluetooth remote controller, so that the user can control the shooting of the mobile phone through the Bluetooth remote controller, thereby enriching the use scenarios of the multi-leg support.

[0096] It is to be understood that the at least three support leg assemblies 300 are maintained in the collapsed state relative to the support pole assembly 100, the at least three support leg assemblies 300 are maintained in a stable collapsed configuration relative to the support pole assembly 100, for example, during transport of the multi-legged support, the at least three support leg assemblies 300 are maintained in a stable collapsed configuration relative to the support pole assembly 100, the at least three support leg assemblies 300 are not able to spread apart relative to the support pole assembly 100, for example, the at least three support leg assemblies 300 do not spread apart relative to the support pole assembly 100 due to their own weight. For example, in the collapsed state, the at least three support leg assemblies 300 are clipped to the connecting pole 400, the support pole assembly 100 or the sleeve assembly 200, for another example, the at least three support leg assemblies 300 are magnetically attracted to the connecting pole 400, the support pole assembly 100 or the sleeve assembly 200.

[0097] In the usual case, the at least three support leg assemblies 300 are further opened relative to the support pole assembly 100 in the initially opened state relative to the support pole assembly 100, such that the at least three support leg assemblies 300 are spread apart relative to the support pole assembly 100, such that the at least three support leg assemblies 300 are supportable on a support surface. In the unusual case, the initially opened state relative to the support pole assembly 100 of the at least three support leg assemblies 300 is one of the spread apart states relative to the support pole assembly 100 of the at least three support leg assemblies 300, i.e., the at least three support leg assemblies 300 are supportable on a support surface in the initially opened state relative to the support pole assembly 100 of the at least three support leg assemblies 300.

[0098] In some cases, the support leg assembly 300 is subjected to a folding force that keeps the support leg assembly 300 folded against the support pole assembly 100 in the state that the support leg assembly 300 is folded against the support pole assembly 100. The type of the folding force that the support leg assembly 300 is subjected to that keeps the support leg assembly 300 folded against the support pole assembly 100 can be various, such as an attractive force (e.g. a vacuum attractive force), a clamping force, a magnetic attractive force, an adhesive force, etc. The folding force that the support leg assembly 300 is subjected to can be partially or entirely originated from the connecting rod 400, the support pole assembly 100 or the sliding sleeve assembly 200. For example, in the case that the support leg assembly 300 is clamped to the connecting rod 400, the support pole assembly 100 or the sliding sleeve assembly 200, the folding force is partially or entirely originated from the clamping force of the connecting rod 400, the support pole assembly 100 or the sliding sleeve assembly 200 to the support leg assembly 300; for another example, in the case that the support leg assembly 300 is magnetically attracted to the connecting rod 400, the support pole assembly 100 or the sliding sleeve assembly 200, the folding force is partially or entirely originated from the magnetic attractive force of the connecting rod 400, the support pole assembly 100 or the sliding sleeve assembly 200. When the at least three support leg assemblies 300 are unfolded relative to the support pole assembly 100, the folding force that the support leg assembly 300 is subjected to is reduced or eliminated, so that the support leg assembly 300 is easily unfolded relative to the support pole assembly 100, and thus the support leg assembly 300 is in an unfolded state relative to the support pole assembly 100. For example, in the state that the support leg assembly 300 is unfolded relative to the support pole assembly 100, the folding force that the support leg assembly 300 is subjected to is reduced or eliminated, so that the user is more easily to unfold the support leg assembly 300 relative to the support pole assembly 100 by hand, or the user is more easily to slide the sliding sleeve assembly 200, so as to facilitate the unfolding of the support leg assembly 300 relative to the support pole assembly 100. For another example, in the state that the support leg assembly 300 is unfolded relative to the support pole assembly 100, the support leg assembly 300 is unfolded relative to the support pole assembly 100, the sliding sleeve assembly 200 slides towards the bottom end of the support pole assembly 100, and the connecting rod 400 is unfolded relative to the support pole assembly 100 under the weight of the moving assembly, so that the support leg assembly 300 is in an unfolded state relative to the support pole assembly 100, wherein the moving assembly includes the support leg assembly 300, the connecting rod 400 and the sliding sleeve assembly 200.

[0099] In other cases, the at least three support leg assemblies 300 are retracted relative to the support pole assembly 100 from the preliminary opening to the retracted state, the retraction force on the at least three support leg assemblies 300 does not change, but because the at least three support leg assemblies 300 are in the preliminary opening relative to the support pole assembly 100, the user can further open the at least three support leg assemblies 300 relative to the support pole assembly 100 by hand or with an external tool, thereby facilitating the opening of the at least three support leg assemblies 300 relative to the support pole assembly 100.

[0100] It can be understood that the retraction force on the at least three support leg assemblies 300 is magnetic attraction. Compared with other ways, because of the action of the magnetic field, the magnetic attraction can facilitate the retraction of the at least three support leg assemblies 300 to fit the support pole assembly 100 during the process of the at least three support leg assemblies 300 from the opening to the retracted state relative to the support pole assembly 100, thereby making the process of the automatic retraction of the at least three support leg assemblies 300 to the support pole assembly 100 more rapid and smooth, and the at least three support leg assemblies 300 can eventually be more closely attracted to the support pole assembly 100. And because the retraction force on the at least three support leg assemblies 300 is magnetic attraction, compared with the way in which the retraction force is a clamping force, the at least three support leg assemblies 300 can be more smoothly pushed open when the at least three triggering portions 520 rotate, avoiding the situation of accidental jamming.

[0101] Specifically, the support surface can be a ground, a table top, etc., the support surface can be a plane or a curved surface, etc., the support surface can be a horizontal surface, an inclined surface.

[0102] In some implementations, with reference to Figures 1-27 , or with reference to Figures 29-55 , or with reference to Figures 56-66 , the preliminary opening piece 500 is rotatable relative to the support pole assembly 100, which means that at least one sub-motion of the preliminary opening piece 500 during the movement of the preliminary opening piece 500 relative to the support pole assembly 100 is a rotational motion of the preliminary opening piece 500 relative to the support pole assembly 100. For example, the preliminary opening piece 500 is connected to the support pole assembly 100 by rotation, for example, the preliminary opening piece 500 and the support pole assembly 100 are connected by a rotary pair, the user can directly actuate the preliminary opening piece 500 to make the preliminary opening piece 500 rotate relative to the support pole assembly 100. For another example, the preliminary opening piece 500 is both translatable relative to the support pole assembly 100 and rotatable relative to the support pole assembly 100.

[0103] Understandably, applying a first external action to the initial opening member 500 causes the initial opening member 500 to rotate relative to the support rod assembly 100, thereby causing the support foot assembly 300 to initially open relative to the support rod assembly 100. For example, when the initial opening member 500 can only rotate relative to the support rod assembly 100, the first external action includes a rotational torque about the rotation axis of the initial opening member 500. Applying a rotational torque to the initial opening member 500 (e.g., a user manually turning the initial opening member 500) causes the initial opening member 500 to rotate relative to the support rod assembly 100, thereby causing the support foot assembly 300 to initially open relative to the support rod assembly 100. When the initial opening member 500 is both translatable and rotatable relative to the support rod assembly 100, the first external action includes a pair of forces acting on the initial opening member 500 along a first direction, applying a force to the initial opening member 500 to cause the initial opening member 500 to translate relative to the support rod assembly 100 along the first direction and thus rotate relative to the support rod assembly 100; or, the first external action includes a rotational torque about the rotation axis of the initial opening member 500, applying a rotational torque to the initial opening member 500 to cause the initial opening member 500 to rotate relative to the support rod assembly 100.

[0104] In some implementations, refer to Figures 1-27 or refer to Figures 56-66 The initial opening member 500 is rotatably restricted and mounted on the support rod assembly 100, so that the initial opening member 500 cannot exceed the initial position or exceed the second position. For example, in the initial position, the initial opening member 500 directly or indirectly abuts against the support rod assembly 100; or in the second position, the initial opening member 500 directly or indirectly abuts against the support rod assembly 100.

[0105] For illustrative purposes only, see reference. Figures 1-27 or refer to Figures 29-55 or refer to Figures 56-66 During the process of at least three support foot assemblies 300 retracting relative to the support rod assembly 100 to initially open relative to the support rod assembly 100, the angle of rotation of the support foot assembly 300 relative to the support rod assembly 100 is greater than or equal to 0.5°, such as 0.5°, 1°, 2°, 3°, etc.

[0106] In some other implementations, during the process of at least three support foot assemblies 300 retracting relative to the support rod assembly 100 to initially opening relative to the support rod assembly 100, the angle of rotation of the support foot assembly 300 relative to the support rod assembly 100 is greater than or equal to 0.3°, for example, the angle can be 0.3°, 0.4°, 0.5°, etc.

[0107] It should be understood that the initial position of the preliminary opening component 500 can refer to a specific position or a range of positions; the second position of the preliminary opening component 500 can refer to a specific position or a range of positions, for example, any position that allows the support leg assembly 300 to be in a preliminary opening state can be the second position of the preliminary opening component 500.

[0108] In some implementations of the embodiments of the present invention, reference is made to... Figure 6 , Figure 18 During the rotation of the initial opening member 500 relative to the support rod assembly 100, the initial opening member 500 can also translate relative to the support rod assembly 100 along a first direction. During the application of a first external force to the initial opening member 500, the initial opening member 500 translates relative to the support rod assembly 100 along the first direction and rotates relative to the support rod assembly 100. The first external force includes a force acting on the initial opening member 500 along the first direction, and / or, the first external force includes a rotational torque acting on the initial opening member 500 about its rotation axis 501. It is understood that the initial opening member 500 can be rotated relative to the support rod assembly 100 by applying the first external force, thereby causing the support leg assembly 300 to initially open relative to the support rod assembly 100. Furthermore, there can be multiple methods of the first external force, thus facilitating the use of this multi-leg bracket.

[0109] In some cases, the first external action includes a force along a first direction (all or part of the first external action is a force along the first direction, for example, a component of the first external action is a force along the first direction), which is a pushing force directed toward the support rod assembly 100, which can be achieved by the user pressing the initial opening member 500 by hand or by the initial opening member 500 striking the support surface; the force can also be a pulling force away from the support rod assembly 100, for example, the user can pull the initial opening member 500. Understandably, the force must overcome the resistance experienced by the initial opening member 500 (which includes the frictional resistance between the initial opening member 500 and the support rod assembly 100), causing the initial opening member 500 to translate relative to the support rod assembly 100 in the first direction, and causing the initial opening member 500 to rotate relative to the support rod assembly 100.

[0110] In some other cases, the first external action includes a rotation torque acting on the preliminary opening member 500 and about the rotation axis 501 of the preliminary opening member 500 (all or part of the first external action is a rotation torque about the rotation axis 501, for example, a component torque of the first external action is a rotation torque about the rotation axis 501), and the rotation torque can be applied to the preliminary opening member 500 by a rotation force (for example, a user uses a hand or an external tool to rotate the preliminary opening member 500), so that the preliminary opening member 500 rotates relative to the support rod assembly 100, and the support foot assembly 300 is preliminarily opened relative to the support rod assembly 100.

[0111] In some implementations, the preliminary opening member 500 and the support rod assembly 100 are connected through a cam pair, and the preliminary opening member 500 moves relative to the support rod assembly 100 in a translation manner and in a rotation manner, specifically, the support rod assembly 100 has a connecting protrusion, and the preliminary opening member 500 has a connecting groove (alternatively, the support rod assembly 100 has a connecting groove, and the preliminary opening member 500 has a connecting protrusion), the connecting protrusion and the connecting groove are matched, the connecting protrusion and the connecting groove form a cam pair in combination, and the connecting protrusion slides or rolls in the connecting groove, so that the preliminary opening member 500 moves relative to the support rod assembly 100 in a translation manner and in a rotation manner. Specifically, the connecting groove and the connecting protrusion are a cylindrical cam mechanism, for example, the connecting groove extends along a spiral line. The first external action needs to overcome the resistance (including the frictional resistance between the connecting protrusion and the connecting groove) that the preliminary opening member 500 receives, so that the connecting protrusion slides or rolls in the connecting groove.

[0112] For example, the first direction is along the length direction of the support rod assembly 100, for example, the preliminary opening member 500 is installed at the bottom end of the support rod assembly 100, and the first direction is the direction in which the bottom end of the support rod assembly 100 points to the top end thereof.

[0113] Further, in the process that the preliminary opening member 500 moves relative to the support rod assembly 100 in the first direction and the preliminary opening member 500 rotates relative to the support rod assembly 100, the translation of the preliminary opening member 500 relative to the support rod assembly 100 in the first direction plays an auxiliary role in the preliminary opening of the support foot assembly 300.

[0114] In some implementations of the embodiments of the present application, refer to Figure 6 , Figure 18The preliminary opening piece 500 is provided with a first thread 510, the support rod assembly 100 is provided with a second thread 121, the first thread 510 cooperates with the second thread 121, and the rotation axis 501 of the preliminary opening piece 500 is coaxial with the central axis of the first thread 510; during the process of applying a first external action to the preliminary opening piece 500, the preliminary opening piece 500 rotates relative to the support rod assembly 100 around the rotation axis, and the preliminary opening piece 500 translates relative to the support rod assembly 100 along a first direction, the first direction being along the rotation axis; the first external action includes a force acting on the preliminary opening piece 500 and along the rotation axis 501, and / or the first external action includes a rotation torque acting on the preliminary opening piece 500 and around the rotation axis 501. Understandably, the first thread 510 and the second thread 121 facilitate the manufacture of the preliminary opening piece 500 and the support rod assembly 100, and facilitate the installation of the preliminary opening piece 500 on the support rod assembly 100. The first direction is along the rotation axis 501.

[0115] Understandably, the preliminary opening piece 500 is screw-connected to the support rod assembly 100, and the preliminary opening piece 500 and the support rod assembly 100 are screw-connected through a screw pair. During the process of screwing the preliminary opening piece 500 relative to the support rod assembly 100, the first external action overcomes the resistance (the frictional resistance between the first thread 510 and the second thread 121) that the preliminary opening piece 500 is subjected to, and the preliminary opening piece 500 translates relative to the support rod assembly 100 and rotates relative to the support rod assembly 100.

[0116] For example, the first thread 510 and the second thread 121 are rectangular threads, or the first thread 510 and the second thread 121 are triangular threads, etc. The structure of the first thread 510 and the second thread 121 is such that at least one first external action can drive the preliminary opening piece 500, for example, the lead angle of the first thread 510 is 30.6°. The first thread 510 is an external thread, and the second thread 121 is an internal thread, or the first thread 510 is an internal thread, and the second thread 121 is an external thread.

[0117] For example only, the central axis of the first thread 510 is parallel to the length direction of the support rod assembly 100, or the central axis of the first thread 510 is parallel to the central axis of the support rod assembly 100; more specifically, the central axis of the first thread 510 is coaxial with the central axis of the support rod assembly 100. For another example, the central axis of the first thread 510 is not parallel to the length direction of the support rod assembly 100, or the central axis of the first thread 510 is not parallel to the central axis of the support rod assembly 100.

[0118] In some cases, the first external action includes an action force along the rotation axis 501 (part or all of the first external action is an action force along the rotation axis 501, for example, a component of the first external action is an action force along the rotation axis 501), which is a pushing force directed to the support rod assembly 100, and the user can press the preliminary opening piece 500 by hand, or the preliminary opening piece 500 hits the support surface to achieve the pressing of the preliminary opening piece 500; the action force can be a pulling force away from the support rod assembly 100, for example, the user can pull the preliminary opening piece 500. In other cases, the first external action includes a rotation torque acting on the preliminary opening piece 500 and around the rotation axis 501 thereof (part or all of the first external action is a rotation torque around the rotation axis 501, for example, a component of the first external action is a rotation torque around the rotation axis 501), which can also be achieved by applying a rotation torque to the preliminary opening piece 500 (for example, the user uses hand or an external tool to rotate the preliminary opening piece 500), so that the preliminary opening piece 500 rotates relative to the support rod assembly 100, thereby causing the support leg assembly 300 to be preliminarily opened relative to the support rod assembly 100.

[0119] In some implementations of the embodiments of the present application, referring to Figure 6 、 Figure 18 、 Figure 21 and the like, the multi-leg support further includes a reset spring 610 acting on the preliminary opening piece 500, and in the state where the at least three support leg assemblies 300 are spread relative to the support rod assembly 100, the reset spring 610 causes the preliminary opening piece 500 to return from the second position to the initial position. The reset spring 610 causes the preliminary opening piece 500 to return to the initial position, thereby avoiding the preliminary opening piece 500 from interfering with the folding of the support leg assembly 300 relative to the support rod assembly 100, in particular, avoiding the touch portion 240 of the preliminary opening piece 500 from interfering with the folding of the support leg assembly 300 relative to the support rod assembly 100.

[0120] It can be understood that, in the process of the first external action causing the preliminary opening piece 500 to move relative to the support rod assembly 100, the resistance that the preliminary opening piece 500 receives also includes the elastic force of the reset spring 610 acting on the preliminary opening piece 500.

[0121] For another example, in the state where the at least three support leg assemblies 300 are preliminarily opened relative to the support rod assembly 100, the reset spring 610 causes the preliminary opening piece 500 to return from the second position to the initial position.

[0122] For example, the reset spring 610 can be a columnar spring, a tower spring, a torsion spring, etc. In some cases, the reset spring 610 is a columnar spring or a tower spring, and the action of the reset spring 610 on the preliminary opening piece 500 is an action force on the preliminary opening piece 500 along the rotation axis 501, which is a pulling force or a pushing force of the reset spring 610 on the preliminary opening piece 500; in some cases, the reset spring 610 is a torsion spring, and the action of the reset spring 610 on the preliminary opening piece 500 is a rotation torque on the preliminary opening piece 500 around the rotation axis 501.

[0123] In some implementations of the embodiments of the present application, referring to Figure 6 , Figure 18 , Figure 21 , the preliminary opening piece 500 has a mounting column 520, the first screw thread 510 is arranged on the mounting column 520, the support rod assembly 100 has a mounting cavity 101, the mounting column 520 is mounted in the mounting cavity 101, a second screw thread 121 is arranged on a cavity wall of the mounting cavity 101, the mounting column 520 is provided with a containing cavity 502, the containing cavity 502 is communicated to one end of the mounting column 520, and the at least three triggering portions 540 are all connected to the mounting column 520; the mounting column 520 has a first abutting wall 503, the first abutting wall 503 is located in the containing cavity 502, the support rod assembly 100 has a second abutting wall 102, and the second abutting wall 102 is located in the mounting cavity 101; the reset spring 610 is a columnar spring or a tower spring, a first end of the reset spring 610 is contained in the containing cavity 502, the first end of the reset spring 610 abuts against the first abutting wall 503, and a second end of the reset spring 610 abuts against the second abutting wall 102; during the rotation of the preliminary opening piece 500 from the initial position to the second position, the mounting column 520 moves towards the second abutting wall 102, and the reset spring 610 is compressed. It can be understood that the mounting column 520 is mounted in the mounting cavity 101, and the first end of the reset spring 610 is contained in the containing cavity 502, so that the reset spring 610 is at least partially contained in the containing cavity 502, and the overall structure of the multi-foot support is compact.

[0124] For example, the columnar spring can be a cylindrical spring, a square columnar spring, a polygonal columnar spring, etc., and the tower spring can be a conical spring, a circular truncated cone spring, a polygonal tower spring, etc. The action force of the reset spring 610 on the preliminary opening piece 500 is an action force on the preliminary opening piece 500 along the rotation axis 501, which is a pushing force of the reset spring 610 on the preliminary opening piece 500. It should be understood that the first external action includes a pushing force on the preliminary opening piece 500 and along the rotation axis 501, and / or the first external action includes a rotation torque on the preliminary opening piece 500 and around the rotation axis 501.

[0125] It can be understood that the first end of the reset spring is accommodated in the accommodating cavity, so that the reset spring is limited to be located on the preliminary opening piece, so that the reset spring is not easy to bend or deviate from its use position during the extension and contraction process.

[0126] It can be understood that the reset spring is a columnar spring or a tower-shaped spring, so that the reset spring is easy to be compressed, and the reset spring does not hinder the movement of the preliminary opening piece.

[0127] It should be understood that the first thread 510 is an external thread, and the second thread 121 is an internal thread.

[0128] Apparently, during the rotation of the preliminary opening piece 500 from the initial position to the second position, the preliminary opening piece 500 moves along the rotation axis 501, and the preliminary opening piece 500 rotates around the rotation axis 501.

[0129] In some implementations, the mounting column 520 has a first end face 504, the accommodating cavity 502 is communicated to the first end face 504, and in the state that the preliminary opening piece 500 is in the second position, the first end face 504 abuts against the second abutting wall 102, and the reset spring 610 is accommodated in the accommodating cavity 502. The abutment of the first end face 504 and the second abutting wall 102 makes the rotation of the preliminary opening piece 500 to the second position convenient, so that the support leg assembly 300 is in the preliminary opening state. In this case, the abutment of the first end face 504 and the second abutting wall 102 also makes the preliminary opening piece 500 limitedly mounted on the support rod assembly 100, and the position of the preliminary opening piece 500 relative to the support rod assembly 100 cannot exceed the second position.

[0130] In other implementations, the mounting column 520 has a first end face 504, the accommodating cavity 502 is communicated to the first end face 504, and in the state that the preliminary opening piece 500 is in the second position, the first end face 504 has a spacing with the second abutting wall 102, and the reset spring 610 is mostly accommodated in the accommodating cavity 502.

[0131] In some implementations of the embodiments of the present application, with reference to Figure 6 、 Figure 18 、 Figure 21etc., the preliminary opening piece 500 further comprises a connecting column 530 connected to the mounting column 520, one end of the connecting column 530 is accommodated in the accommodating cavity 502, and the reset spring 610 is sleeved on the connecting column 530; the support rod assembly 100 has a blocking part 122, the blocking part 122 is provided with a through hole 103, the connecting column 530 passes through the through hole 103, and the blocking part 122 is provided with a second abutting wall 102; in a state where the preliminary opening piece is in the initial position, the blocking part 122 is used for blocking the connecting column; the multi-leg support further comprises a first fastener 620, the first fastener 620 is in fastening connection with the connecting column 530, and first heads 621 of the first fastener 620 are located on opposite sides of the blocking part 122 respectively; in the process that the preliminary opening piece 500 returns from the second position to the initial position, the reset spring 610 acts on the preliminary opening piece 500, and the first heads 621 of the first fastener 620 move towards the blocking part 122; in a state where the preliminary opening piece 500 is in the initial position, the first heads 621 of the first fastener 620 abut against the blocking part 122 to block the connecting column. Understandably, the blocking part blocks the connecting column, and specifically, the first heads 621 of the first fastener 620 abut against the blocking part 122, so that the preliminary opening piece is installed in the support rod assembly 100 in a limited manner, and the preliminary opening piece 500 is prevented from being separated from the support rod assembly 100 under the action of the reset spring 610. The reset spring 610 is sleeved on the connecting column 530, the reset spring 610 is prevented from being separated from the accommodating cavity 502, the reset spring is not easy to bend or be separated from the use position in the stretching and retracting process, and the structure of the multi-leg support is compact.

[0132] Specifically, the first fastener 620 can be a threaded part or a riveting part (for example, a screw, a rivet or the like), and the first fastener 620 also facilitates installation of the preliminary opening piece 500.

[0133] In some implementations, in a state where the preliminary opening piece 500 is in the initial position, the connecting column 530 directly or indirectly abuts against the blocking part 122.

[0134] Understandably, one end of the connecting column 530 is accommodated in the accommodating cavity 502, the first abutting wall is located in the accommodating cavity, and the first end of the reset spring 610 is accommodated in the accommodating cavity 502, so that the structure of the multi-leg support is compact.

[0135] In some implementations of the embodiments of the present application, refer to Figure 6 , Figure 18 , Figure 21 etc., or refer to Figure 33 , Figure 36 , Figure 37 , Figure 42 , Figure 50The support rod assembly 100 comprises a support rod body 110 and a mounting piece 120, the mounting piece 120 is mounted on the support rod body 110, each connecting rod 400 is rotatably connected with the mounting piece 120; a mounting cavity 101 is arranged on the mounting piece 120, a second screw thread 121 is arranged on the mounting piece 120, and the mounting piece 120 is provided with a second abutting wall 102. It can be understood that the support rod assembly 100 comprises the support rod body 110 and the mounting piece 120, which facilitates the assembly of the support rod assembly 100, the mounting piece 120 is used for rotatably connecting the connecting rod 400 and mounting the preliminary opening piece 500, so that the structure of the multi-leg support is compact.

[0136] For example, the mounting piece 120 is fixedly connected with the support rod body 110, for example, the mounting piece 120 and the support rod body 110 can be fixedly connected through a screw, an interference fit, a rivet connection or the like. By arranging the mounting piece 120 for connecting the preliminary opening piece 500 and the connecting rod, the bottom end connecting structure of the support rod assembly 100 can be independently formed, so that the manufacturing cost can be reduced, and the assembly of the preliminary opening piece 500 and the support rod assembly 100 is facilitated. At the same time, since the support rod body 110 mainly plays a supporting and guiding role, and the mounting piece 120 mainly plays a connecting role, the support rod body 110 and the mounting piece 120 can also be made of different materials, for example, the support rod body 110 is made of metal material to improve the structural strength and reduce the sliding friction force with the sliding sleeve assembly 200, and the mounting piece 120 is made of plastic material to reduce the manufacturing cost of the mounting piece 120.

[0137] In some implementations of the embodiments of the present application, with reference to Figure 6 、 Figure 18 、 Figure 21etc., the preliminary opening piece 500 further comprises a connecting column 530 connected to the mounting column 520, one end of the connecting column 530 is accommodated in the accommodating cavity 502, and the reset spring 610 is sleeved on the connecting column 530; the mounting piece 120 has a retaining part 122, the retaining part 122 is provided with a through hole 103, the connecting column 530 passes through the through hole 103, and the retaining part 122 is provided with a second abutting wall 102; the multi-leg support further comprises a first fastener 620, the first fastener 620 is fastened to the connecting column 530, and first heads 621 of the first fastener 620 are located on opposite sides of the retaining part 122 respectively; in the process that the preliminary opening piece 500 returns from the second position to the initial position, the reset spring 610 acts on the preliminary opening piece 500, and the first heads 621 of the first fastener 620 move towards the retaining part 122; in the state that the preliminary opening piece 500 is in the initial position, the first heads 621 of the first fastener 620 abut against the retaining part 122. The first heads 621 of the first fastener 620 abut against the retaining part 122, so that the preliminary opening piece 500 is prevented from being separated from the support rod assembly 100; and the first heads 621 of the first fastener 620 abut against the retaining part 122, the reset spring 610 just makes the preliminary opening piece 500 return to the initial position, and the preliminary opening piece 500 is prevented from affecting the support leg assembly 300 to be folded in the support rod assembly 100.

[0138] In some implementations of the embodiments of the present application, refer to Figure 6 、 Figure 18 、 Figure 21 etc., or refer to Figure 33 、 Figure 36 、 Figure 37 、 Figure 42 、 Figure 50The mounting piece 120 is mounted at the bottom end of the support rod body 110, and the sliding sleeve assembly 200 is in abutment with the mounting piece 120 when the at least three support leg assemblies 300 are spread to the maximum spread state relative to the support rod assembly 300; the mounting piece 120 comprises a mounting portion 123 and a mounting protrusion 124 connected to the mounting portion 123, each connecting rod 400 is rotationally connected to the mounting protrusion 124 of the mounting piece 120, and the mounting cavity 101 is communicated to the mounting portion 123; the support rod body 110 is provided with a mounting hole 104 communicated to the bottom end thereof, the mounting portion 123 is inserted into the mounting hole 104, and the support rod assembly 100 further comprises a second fastener 130, the second fastener 130 is fastened and connected to the mounting portion 123 through the support rod body 110; the sliding sleeve assembly 200 has a sliding cavity 201 slidably fitted with the support rod assembly 100, an inner wall of the sliding cavity 201 is provided with a sliding strip 210, and the sliding strip 210 extends along the sliding direction of the sliding cavity 201; an outer wall of the support rod body 110 is concavely provided with a sliding groove 105, the sliding groove 105 is adapted to the sliding strip 210, and the sliding strip 210 slides in the sliding groove 105 during the sliding of the sliding sleeve assembly 200 along the length direction of the support rod assembly 100; the second fastener 130 comprises a second head portion 131 and a second rod portion 132 connected to the second head portion 131, the second head portion 131 is accommodated in the sliding groove 105, and the second rod portion 132 is fastened and connected to the mounting portion 123 through the support rod body 110; in the state that the sliding sleeve assembly 200 is in abutment with the support rod assembly 100, the second head portion 131 is accommodated in the sliding cavity 201, and the second head portion 131 is located between the bottom end of the sliding strip 210 and the bottom end of the sliding sleeve assembly 200. Understandably, the sliding sleeve assembly 200 is in abutment with the mounting piece 120, which avoids that the multi-leg support is too large in opening angle, the support leg assembly 300 and the connecting rod 400 are deformed, and the multi-leg support is damaged during use.

[0139] Understandably, the second fastener 130 fastens the mounting portion 123 and the support rod body 110, and the mounting portion 123 is not easy to be separated from the support rod body 110, and the second fastener 130 can be a threaded fastener, a riveted fastener, etc.

[0140] It can be understood that the cooperation of the sliding bar 210 and the sliding groove 105 makes the sliding of the sliding sleeve assembly 200 relative to the support rod assembly 100 more stable. The accommodation of the second head 131 in the sliding groove 105 reduces the possibility of scratching the user by the second head 131, and the sliding groove 105 is used for cooperation with the sliding bar 210 and accommodation of the second head 131, so that the structure of the support rod assembly 100 is compact. In the state that the sliding sleeve assembly 200 is in contact with the support rod assembly 100, the second head 131 is located between the bottom end of the sliding bar 210 and the bottom end of the sliding sleeve assembly 200, avoiding the second head 131 from hindering the sliding of the sliding sleeve assembly 200; and the second head 131 is accommodated in the sliding cavity 201, further avoiding the second head 131 from scratching the user's hand. For example, the number of the sliding bar 210 is 2, and the two sliding bars 210 are located on opposite sides of the sliding cavity 201; the number of the sliding groove 105 is 2, and the two sliding grooves 105 are located on opposite sides of the support rod body 110; the number of the second fastener 130 is 2, and the second heads 131 of the two second fasteners 130 are accommodated in the two sliding grooves 105, respectively. It can be understood that the sliding bar 210 and the sliding groove 105 extend along the sliding direction of the sliding sleeve assembly 200.

[0141] For example, in the state that the sliding sleeve assembly 200 is in contact with the mounting piece 120, the sliding sleeve assembly 200 is in contact with the mounting protrusion 124.

[0142] For example, as shown in Figure 21 , the mounting piece 120 has an abutting table 1211 protruding from the first outer peripheral wall 111 of the support rod body 110, the abutting table 1211 is located at the mounting protrusion 124, and in the state that the at least three support leg assemblies 300 are opened relative to the support rod assembly 100 to the maximum opening state, the sliding sleeve assembly 200 is in contact with the abutting table 1211. The abutting table 1211 can be a plane, a curved surface, etc.

[0143] For example, as shown in Figure 22The sliding sleeve assembly 200 further comprises a main cylinder 220 and a positioning cylinder 230 connected to the main cylinder 220, the main cylinder 220 and the positioning cylinder 230 are slidingly sleeved on the outer periphery of the support rod body 110, the support leg assembly 300 is rotationally connected to the main cylinder 220, the positioning cylinder 230 extends from the bottom end of the main cylinder 220, and in the state that the at least three support leg assemblies 300 are folded relative to the support rod body 110, the positioning cylinder 230 is located between the support leg assembly 300 and the support rod body 110; in the state that the at least three support leg assemblies 300 are opened to the maximum relative to the support rod body 110, the positioning cylinder 230 abuts against the mounting piece 120, and the at least three support leg assemblies 300 can be supported on a support surface, and the support rod assembly 100 and the preliminary opening assembly 500 are located above the support surface. Specifically, the positioning cylinder 230 can abut against the abutting table surface 1211. Specifically, the cross-sectional area of the positioning cylinder 230 is smaller than the cross-sectional area of the main cylinder 220, so as to facilitate the folding of the at least three support leg assemblies 300 on the support rod body 110; and the positioning cylinder 230 is slidingly sleeved on the outer periphery of the support rod body 110. The main cylinder 220 can be held by a user to facilitate the sliding of the sliding sleeve assembly 200 relative to the support rod assembly 100.

[0144] It can be understood that the cross-sectional area of the positioning cylinder 230 is smaller than the cross-sectional area of the main cylinder 220, and there is a spacing between the outer peripheral wall of the main cylinder 220 and the outer peripheral wall of the positioning cylinder 230, so that the main cylinder 220 has a certain thickness, and the top end of the support leg assembly 300 is rotationally connected to the lower end of the hand-held portion 210, and then the second rotating portion of the support leg assembly 300 has sufficient rotating space 320.

[0145] It can be understood that the length of the main cylinder 220 can be designed according to actual needs, and in order to facilitate the user to hold the multi-leg support with the palm, the length of the main cylinder 220 is greater than or equal to 1 cm. For example, the length of the main cylinder 220 is between 2 cm and 6 cm. In this way, the length of the main cylinder 220 is long enough to be held by the user, for example, the user holds the main cylinder 220 to lift the multi-leg support, or the user holds the main cylinder 220 to slide the sliding sleeve assembly relative to the support rod assembly.

[0146] For example, as shown in Figure 22 , the sliding sleeve assembly 200 has at least three first rotating portions 202, the support leg assembly 300 has a second rotating portion 311, the first rotating portion 202 is a hole, the second rotating portion 311 is a shaft, the first rotating portion 202 is arranged on the main cylinder 220, and the main cylinder 220 is provided with a avoiding gap 221 to avoid interference between the main cylinder 220 and the support leg assembly. The top end of the support leg assembly is rotationally connected to the lower end of the main cylinder 220.

[0147] For example, referring to Figures 1-27 , or Figures 29-55The sleeve assembly 200 has at least three first rotating parts 202, the support leg assembly 300 has a second rotating part 311, the second rotating part 311 of at least three support leg assemblies 300 is respectively rotatably connected with the corresponding first rotating part 202, the first rotating part 202 is a shaft, and the second rotating part 311 is a hole, or the first rotating part 202 is a hole, and the second rotating part 311 is a shaft. For example, the support rod assembly 100 has a third rotating part 106, the connecting rod 400 has a fourth rotating part 410, the third rotating part 106 is rotatably connected with the fourth rotating part 410, the third rotating part 106 is a hole, and the fourth rotating part 410 is a shaft, or the third rotating part 106 is a shaft, and the fourth rotating part 410 is a hole. For example, the support leg assembly 300 has a fifth rotating part 301, the connecting rod 400 has a sixth rotating part 420, the fifth rotating part 301 is rotatably connected with the sixth rotating part 420, the fifth rotating part 301 is a hole, and the sixth rotating part 420 is a shaft, or the fifth rotating part 301 is a shaft, and the sixth rotating part 420 is a hole.

[0148] For example, with reference to Figures 1-27 , or Figures 29-55 The mounting member 120 includes a first mounting sub-member 120a and a second mounting sub-member 120b, the second mounting sub-member 120b is mounted on the first mounting sub-member 120a, the second thread 121 is arranged on the first mounting sub-member 120a, the first mounting sub-member 120a includes a mounting part 123, and the first mounting sub-member 120a further includes a part of the mounting protrusion 124, the second mounting sub-member 120b includes a part of the mounting protrusion 124, and the second mounting sub-member 120b is mounted on the first mounting sub-member 120a to form the mounting protrusion 124. In the state that the sleeve assembly 200 abuts against the mounting member 120, the sleeve assembly 200 abuts against the first mounting sub-member 120a. Specifically, the first mounting sub-member 120a is mounted on the second mounting sub-member 120b by a third fastener 125, the third fastener 125 can be a threaded member, a rivet, or the like; the third rotating part 106 is a hole, and the first mounting sub-member 120a and the second mounting sub-member 120b are combined to form the third rotating part 106; the advantage of such an arrangement is that the connecting rod 400 is rotatably mounted on the support rod assembly 100. For example, one mounting mode of the connecting rod 400 is to place the connecting rod 400 between the first mounting sub-member 120a and the second mounting sub-member 120b, and then mount the second mounting sub-member 120b on the first mounting sub-member 120a by the third fastener 125.

[0149] Specifically, the second thread 121 is arranged on the mounting part 123, the mounting cavity 101 is communicated to the mounting part 123, and the retaining part 122 is arranged on the mounting part 123. The second fastener 130 is fastened and connected with the first mounting sub-member 120a by penetrating the support rod body 110.

[0150] For example, the mounting member 130 is at least partially embedded in the support rod body 110, and the preliminary opening member 500 is at least partially embedded in the support rod body 110, so that the overall structure of the multi-leg support is more compact; for example, the mounting portion 123 of the mounting member 130 is embedded in the support rod body 110.

[0151] In some implementations of the embodiments of the present application, referring to Figure 4 , Figure 6 , Figure 18 and the like, or referring to Figure 33 , Figure 36 , Figure 37 , Figure 42 , Figure 50 and the like, in the state that the support leg assemblies 300 are folded to the support rod assembly 100, the support leg assemblies 300 are subjected to a folding force that keeps them folded to the support rod assembly 100; in the process that the at least three support leg assemblies 300 change from being folded to the support rod assembly 100 to being preliminarily opened relative to the support rod assembly 100, the folding force is weakened or reduced to 0. Understandably, the weakening or reduction of the folding force that the support leg assemblies 300 are subjected to makes it easy for the support leg assemblies 300 to be opened, and facilitates the support leg assemblies 300 to be in an open state relative to the support rod assembly 100.

[0152] Referring to Figure 6 , or referring to Figure 33 , Figure 36 , Figure 37 , Figure 42 , Figure 50 and the like, in the state that the support leg assemblies 300 are folded to the support rod assembly 100, the support leg assemblies 300 are magnetically attracted to the connecting rod 400; in the process that the at least three support leg assemblies 300 change from being folded to the support rod assembly 100 to being preliminarily opened relative to the support rod assembly 100, the attractive force of the connecting rod 400 to the support leg assemblies 300 is weakened or reduced to 0. Understandably, the weakening of the attractive force of the connecting rod 400 to the support leg assemblies 300 makes it easy for the support leg assemblies 300 to be opened, and facilitates the support leg assemblies 300 to be in an open state relative to the support rod assembly 100.

[0153] For example, referring to Figures 1-27 , or referring to Figures 29-55The support leg assembly 300 includes a support leg body 310 and a magnetic member 320. The magnetic member 320 is detachably mounted on the support leg body 310. When the support leg assembly 300 is folded into the support rod assembly 100, the magnetic member 320 magnetically attracts the connecting rod 400. Furthermore, the magnetic member 320 attracting the connecting rod 400 keeps the support leg assembly 300 in the folded state within the support rod assembly 100. The magnetic member 320 facilitates the folding of the support leg assembly 300 into the support rod assembly 100, thus simplifying the storage of the multi-legged bracket. For example, the magnetic member 320 is made of a permanent magnet material, such as AlNiCo permanent magnet alloys, IronChromiumCo permanent magnet alloys, permanent magnet ferrites, rare earth permanent magnet materials, and composite permanent magnet materials. For example, a small portion of the connecting rod 400 is made of a soft magnetic material, such as cast iron, silicon steel, carbon steel, alloy steel, or soft magnet ferrites. The connecting rod 400 includes a soft magnetic body and a plating layer. The soft magnetic body is made of soft magnetic material, and the plating layer is attached to the soft magnetic body.

[0154] In other examples, the connecting rod 400 is at least partially made of a permanent magnetic material, and the support foot assembly 300 is at least partially made of a soft magnetic material, so that the support foot assembly 300 and the corresponding connecting rod 400 are magnetically attracted to each other. In other examples, the connecting rod 400 is at least partially made of a permanent magnetic material, and the support foot assembly 300 is at least partially made of a permanent magnetic material.

[0155] Understandably, since the connecting rod 410 is closer to the support foot assembly 300 than the support rod assembly 100, the magnetic connection between the support foot assembly 300 and the connecting rod 410 allows their magnetic surfaces to be closer than the magnetic connection between the support foot assembly 300 and the support rod assembly 100. This results in a better magnetic attraction effect for at least the three support foot assemblies 300 and effectively prevents them from accidentally separating.

[0156] Among the optional implementation methods, refer to Figure 6 , Figure 26 The support leg body 310 has a slot 312, and the magnetic component 320 is engaged in the slot 312. Engaging the magnetic component 320 in the slot 312 facilitates the installation of the magnetic component 320.

[0157] Among the optional implementation methods, refer to Figure 6 , Figure 26The card slot 312 is located on the inner side of the support leg body 310; the support leg body 310 is provided with a first installation opening 313 which is in communication with the card slot 312, and the magnetic attraction member 320 can be installed into the card slot 312 through the first installation opening 313; in the state that the multi-leg support is supported on a support plane, the magnetic attraction member 320 has a relative movement tendency of moving away from the first installation opening 313 due to its own weight. The advantage of such an arrangement is that in the process of using the multi-leg support on the ground, the magnetic attraction member 320 is prevented from being pulled out of the card slot 312 of the support leg body 310.

[0158] For example, in the state that the multi-leg support is supported on a support plane, the first installation opening 313 is located above the card slot 312.

[0159] For example, the magnetic attraction member 320 is fixedly connected to the support leg body 310, and the magnetic attraction member 320 is fixedly connected to the inner side of the support leg body 310; for example, the magnetic attraction member 320 can also be fixedly connected to the inner side of the support leg body 310 by embedding, bonding or the like. The magnetic attraction member 320 is arranged in correspondence with the connecting rod 410, so that the magnetic attraction force of the two is maximized, thereby achieving better magnetic attraction effect.

[0160] In some implementations of the embodiments of the present application, with reference to Figures 1-27 , or with reference to Figures 29-55 , the multi-leg support is used for supporting an electronic terminal or a shooting auxiliary product, and in the state that the at least three support leg assemblies 300 are collected on the support rod assembly 100, the at least three support leg assemblies 300 can be held by hand. It can be understood that the at least three support leg assemblies 300 can be held by hand to facilitate the user to hold the multi-leg support, for example, the user can hold the at least three support leg assemblies 300 to take a selfie. For example, in the state that the at least three support leg assemblies 300 are collected on the support rod assembly 100, the at least three support leg assemblies 300 are in a columnar shape.

[0161] In some implementations of the embodiments of the present application, with reference to Figure 4 , or with reference to Figure 30In the state that the at least three support leg assemblies 300 are folded relative to the support rod assembly 100, each of the contact portions 540 is located between two adjacent support leg assemblies 300. It can be understood that, in the state that the at least three support leg assemblies are folded, the multi-leg support is compact in structure and small in volume. Specifically, the support leg assembly 300 has a contact surface 302, and the contact portion 540 contacts the contact surface 302 of the corresponding support leg assembly 300 in the process that the preliminary opening member 500 rotates from the initial position to the second position; the contact surfaces 302 of the two adjacent support leg assemblies 300 are in a cross shape, and in the state that the at least three support leg assemblies 300 are folded relative to the support rod assembly 100, each of the contact portions 540 is located in the space between the contact surfaces 302 of the two adjacent support leg assemblies 300.

[0162] For example, the at least three contact portions are centrally symmetric about the rotation axis of the preliminary opening member, and the at least three contact surfaces are centrally symmetric about the rotation axis of the preliminary opening member.

[0163] In some other implementations of the embodiments of the present application, the preliminary opening member 500 is provided with a plurality of contact portions 540, and the support leg assembly 300 is provided with a plurality of contact surfaces 302. Figures 4 to 6 、 Figures 14 to 18 In the state that the at least three support leg assemblies 300 are folded relative to the support rod assembly 100, the at least three support leg assemblies 300 surround the outer periphery of the support rod assembly 100, and each of the contact portions 540 is located between two adjacent support leg assemblies 300. The inner wall surface of each of the support leg assemblies 300 has a contact surface 302, and the contact surface 302 is configured to contact the corresponding contact portion 540 in the process that the preliminary opening member 500 rotates from the initial position to the second position.

[0164] In the embodiment, the contact surface 302 can be a plane or a convex arc surface. It can be understood that, in the state that the at least three support leg assemblies are folded, the vertical distance between the rotation axis 501 and the contact surface 302 is smaller than the distance between the rotation axis 501 and the joint of the two adjacent support leg assemblies 300. More specifically, the multi-leg support further comprises a non-slip pad 380, which is arranged at the bottom end of the support leg assembly 300, and the contact surface 302 is arranged on the non-slip pad 380. By forming the contact surface 302 on the non-slip pad 380, the contact portion 540 and the contact surface 302 are not in hard contact, which can avoid abrasion of the contact portion 540.

[0165] In the folded state, the at least three support leg assemblies 300 are enclosed in the outer periphery of the support rod assembly 100, which makes it more convenient for the user to hold the multi-legged stand by hand, for example, the user can hold the at least three support leg assemblies 300 to take pictures. In the folded state, the actuating portion 540 is located between the adjacent two support leg assemblies 300, that is, the distance from the top end of the actuating portion 540 to the rotation axis 501 is greater than the vertical distance between the rotation axis 501 and the contact surface 302. In this way, after the at least three actuating portions 540 are rotated, the actuating portion 540 moves along the contact surface 302 to gradually and preliminarily open the at least three support leg assemblies 300. In this way, the process of the at least three actuating portions 540 preliminarily opening the at least three support leg assemblies 300 is smoother, and the at least three actuating portions 540 do not interfere with the folding of the at least three support leg assemblies 300.

[0166] For example only, the inner peripheral wall of the support leg assembly 300 is a concave wall matched with the first outer peripheral wall 111 of the support rod assembly 100, and the outer peripheral wall of the support leg assembly 300 is a convex wall; in the folded state of the at least three support leg assemblies 300, the outer peripheral walls of the at least three support leg assemblies 300 jointly form a first outer peripheral surface, which can be held by the user. More specifically, the first outer peripheral wall 111 of the support rod assembly 100 is a curved surface (for example, a cylindrical surface), the inner peripheral wall of the support leg assembly 300 is a concave arc wall, and the outer peripheral wall of the support leg assembly is a convex arc wall. The at least three support leg assemblies 300 are spliced around the first outer peripheral wall 111 of the support rod assembly 100.

[0167] For example only, the support leg assembly 300 has an overall arc-shaped plate structure, and in the folded state of the at least three support leg assemblies 300, the first outer peripheral surface is substantially a cylindrical surface, so as to facilitate the user to hold by hand.

[0168] For example only, in the folded state of the at least three support leg assemblies 300, the first outer peripheral surface is flush with the outer peripheral wall of the main cylinder 220, so that the overall appearance of the multi-legged stand is more simple and flat; in the folded state of the at least three support leg assemblies 300, the first outer peripheral surface and the outer peripheral surface of the main cylinder 220 of the sliding sleeve assembly 200 jointly form the outer peripheral surface of the multi-legged stand, and the outer peripheral surface of the multi-legged stand as a whole can be held by the user.

[0169] For example only, the support leg assembly 300 has two sides with splicing surfaces, and in the folded state of the at least three support leg assemblies 300, the splicing surface of each support leg assembly 300 is connected with the adjacent support leg assembly 300. The contact surface of the support leg assembly 300 is located between the splicing surfaces on the two sides of the support leg assembly 300; the contact surface is preferably a plane.

[0170] For example only, as Figures 1 to 4As shown in FIG. 1, when the at least three support leg assemblies 300 are in the collapsed state, the outer peripheral walls of the at least three support leg assemblies 300 collectively form a first outer peripheral surface 3111 that can be held by a user, and the connection portions of the outer peripheral walls of adjacent two support leg assemblies 300 are recessed to form anti-pinch grooves 3112 to avoid pinching the user's hand when the first outer peripheral surface 3111 is held.

[0171] For example, the contact surface 302 is located at the bottom end of the support leg assembly 300, and the top end of the support leg assembly 300 is rotationally connected to the sliding sleeve assembly 200, so that when the actuating portion actuates the contact surface 302, the support leg assembly 300 overcomes a larger opening torque against the sliding sleeve assembly 200.

[0172] For example, as shown in FIG. 1, Figure 15 and Figure 44 As shown in FIG. 1, when the at least three support leg assemblies 300 are in the collapsed state, the side walls of adjacent two support leg assemblies 300 are spliced with each other; one of the side walls of the adjacent two support leg assemblies 300 is provided with a plurality of positioning slots 3113, and the other side wall is provided with a plurality of positioning protrusions 3114 that are one-to-one adapted to be inserted into the positioning slots 3113. Specifically, the plurality of positioning slots 3113 are arranged at intervals along the length direction of the support leg assembly. Through the insertion and cooperation of the positioning slots 3113 and the positioning protrusions 3114, the alignment between the adjacent two support leg assemblies is more accurate and reliable when the at least three support leg assemblies are collapsed, and the integrity of the at least three support leg assemblies is better after being collapsed, thereby reducing the shaking between the adjacent support leg assemblies.

[0173] In some implementations of the embodiments of the present application, with reference to Figures 1-27 , or Figures 29-55 , or Figures 56-66 and the like, during the process in which the at least three support leg assemblies 300 are collapsed relative to the support rod assembly 100 to be initially opened relative to the support rod assembly 100, the sliding sleeve assembly 200 slides in the second direction; when the at least three support leg assemblies 300 are initially opened relative to the support rod assembly 100 and the second direction is along the direction of gravity, the weight of the moving assembly causes the at least three support leg assemblies 300 to be unfolded relative to the support rod assembly 100, and the moving assembly includes the sliding sleeve assembly 200, the at least three support leg assemblies 300, and the at least three connecting rods 400. It can be understood that the weight of the moving assembly causes the at least three support leg assemblies 300 to be "automatically" unfolded, thereby facilitating the use of the multi-leg support.

[0174] Obviously, the second direction is along the length direction of the support rod assembly 100. In the process of the preliminary opening of the at least three support leg assemblies 300 relative to the support rod assembly 100, the sliding sleeve assembly 200 slides along the second direction, the support leg assemblies 300 rotate relative to the sliding sleeve assembly 200, the support leg assemblies 300 are preliminarily opened relative to the support rod assembly 100, the connecting rod 400 rotates relative to the support rod assembly 100, and the connecting rod 400 rotates relative to the support leg assemblies 300.

[0175] Since the second direction is along the direction of gravity, the self-weight action of the movable assembly at least includes the self-weight action of the sliding sleeve assembly 200. In the process of the preliminary opening of the at least three support leg assemblies 300 relative to the support rod assembly 100 to the opening, the sliding sleeve assembly 200 slides along the second direction, and the center of gravity of the sliding sleeve assembly 200 drops. In some cases, the self-weight action of the movable assembly further includes the self-weight action of the support leg assemblies 300 and the self-weight action of the connecting rod 400. In the process of the preliminary opening of the at least three support leg assemblies 300 relative to the support rod assembly 100 to the opening, the sliding sleeve assembly 200 slides along the second direction, the center of gravity of the sliding sleeve assembly 200 drops, one end of the support leg assemblies 300 slides with the sliding sleeve assembly 200, the other end of the support leg assemblies 300 opens relative to the support rod assembly 100, the center of gravity of the support leg assemblies 300 drops, the connecting rod 400 preliminarily opens relative to the support rod assembly 100 to the opening of the connecting rod 400 relative to the support rod assembly 100, and the center of gravity of the connecting rod 400 drops.

[0176] In some implementations of the embodiments of the present application, referring to Figures 1-27 , or referring to Figure 33 , 47 , etc., the first external action includes a rotating torque acting on the preliminary opening member 500 and around the rotating axis 501 of the preliminary opening member 500. The preliminary opening member 500 has a rotating adjusting part, and a user can exert a rotating torque around the rotating axis 501 on the rotating adjusting part by hand to rotate the preliminary opening member 500 from the initial position to the second position. It can be understood that the rotating adjusting part facilitates the user to adjust the preliminary opening member 500 by hand, thereby facilitating the use of the multi-leg support. In this case, the first external action includes the rotating torque exerted by the user on the rotating adjusting part. The rotating adjusting part can be in any shape that can be adjusted by the user by hand, and the rotating adjusting part can be in a columnar shape, a sheet shape, etc.

[0177] In some implementations of the embodiments of the present application, referring to Figure 4 , Figure 8 , etc., or referring to Figure 44In some implementations, the number of support leg assemblies 300 is 3, the number of actuating portions 540 is 3, the rotating adjusting portion includes 3 adjusting pieces 550, the 3 adjusting pieces 550 are centrally symmetric about the rotation axis 501 of the preliminary opening piece 500, the 3 adjusting pieces 550 are respectively connected to the corresponding 3 actuating portions 540, and the two adjacent adjusting pieces 550 are the force applying spaces 505. The three fingers of the user can be respectively placed in the three force applying spaces 505 to facilitate the user to adjust the rotating adjusting portion by hand. Understandably, the three fingers of the user can be respectively placed in the force applying spaces 505 to facilitate the adjustment of the rotating adjusting portion, so as to facilitate the use of the multi-leg support. The three fingers can all apply a rotating torque to the rotating adjusting portion. For example, the three fingers are respectively placed in the three force applying spaces 505, and then the user rotates the arm so that the three fingers act on the three adjusting pieces 550, respectively. More specifically, the three fingers of the user are the thumb, the index finger and the middle finger, respectively. The three fingers are used to apply a rotating torque to the preliminary opening piece 500, so that the preliminary opening piece 500 is more easily rotated, thereby facilitating the use of the multi-leg support. In other cases, the rotating adjusting portion includes one adjusting piece 550, two adjusting pieces 550, four adjusting pieces 550, etc.

[0178] In some implementations of the embodiments of the present application, with reference to Figure 6 The preliminary opening piece 500 has a pressure applying portion 560, the first external action includes an acting force acting on the preliminary opening piece 500 and in the first direction; and the pressure applying portion 560 is pressed in the first direction, so that the preliminary opening piece 500 translates in the first direction relative to the support rod assembly 100 and the preliminary opening piece 500 rotates relative to the support rod assembly 100. (The user presses the pressure applying portion 560, which facilitates the user to press the preliminary opening piece 500 to rotate relative to the support rod assembly 100, so that the support leg assembly 300 is preliminarily opened relative to the support rod assembly 100, thereby facilitating the use of the multi-leg support. For example, the user presses the pressure applying portion 560 by hand, and for example, the user hits the support surface to press the preliminary opening piece 500. For example, the at least three adjusting pieces 550 are all connected to the pressure applying portion 560, and the at least three actuating portions 540 are all connected to the pressure applying portion 560. The above arrangement can enhance the structural strength of the preliminary opening piece 500.

[0179] In some implementations of the embodiments of the present application, with reference to Figure 6The preliminary opening piece 500 is installed at the bottom end of the support rod assembly 100; the pressing portion 560 protrudes from the bottom end of the support leg assembly 300 in the state that the at least three support leg assemblies 300 are folded relative to the support rod assembly 100; and the pressing portion 560 of the preliminary opening piece 500 strikes the support surface to press the pressing portion 560 along the first direction in the state that the at least three support leg assemblies 300 are folded relative to the support rod assembly 100, so that the preliminary opening piece 500 translates along the first direction relative to the support rod assembly 100 and the preliminary opening piece 500 rotates relative to the support rod assembly 100. Understandably, the preliminary opening piece 500 is at the bottom end of the support rod assembly 100 and the pressing portion 560 protrudes from the bottom end of the support leg assembly 300, which facilitates the pressing portion 560 of the preliminary opening piece 500 to strike the support surface. By means of the pressing portion 560 striking the support surface, the pressing of the pressing portion 560 is more easily achieved.

[0180] For example, the height of the pressing portion 560 protruding from the bottom end of the support leg assembly 300 is greater than or equal to 1 mm in the folded state.

[0181] In some implementations of the embodiments of the present application, the preliminary opening piece 500 is installed at the bottom end of the support rod assembly 100, and the pressing portion 560 is arranged to protrude from the bottom end of the support leg assembly 300 in the state that the at least three support leg assemblies 300 are folded relative to the support rod assembly 100. Figure 1 Figure 6 Figure 13 Figure 18 Figure 19 ​​​​The preliminary opening member 500 has a pressing portion 560, the first external force includes a force acting on the preliminary opening member 500 and in the first direction, pressing the pressing portion 560 in the first direction makes the preliminary opening member 500 translate in the first direction relative to the support rod assembly 100 and the preliminary opening member 500 rotate relative to the support rod assembly 100, in the process of the at least three support leg assemblies 300 being folded relative to the support rod assembly 100 to the at least three support leg assemblies 300 being preliminarily opened relative to the support rod assembly 100, the sliding sleeve assembly 200 slides in the second direction; when the at least three support leg assemblies 300 are folded relative to the support rod assembly 100 and the second direction is along the direction of gravity, the pressing portion 560 of the preliminary opening member 500 hits the support surface in the second direction, the preliminary opening member 500 translates in the first direction relative to the support rod assembly 100 and the preliminary opening member 500 rotates relative to the support rod assembly 100, thereby making the at least three support leg assemblies 300 preliminarily open relative to the support rod assembly 100, after the pressing portion of the preliminary opening member 500 hits the support surface in the second direction and the second direction is along the direction of gravity to make the at least three support leg assemblies 300 preliminarily open relative to the support rod assembly 100, the dead weight and inertial force of the moving assembly make the at least three support leg assemblies 300 open relative to the support rod assembly 100, the moving assembly includes the sliding sleeve assembly 200, the at least three support leg assemblies 300 and the at least three connecting rods 400, the inertial force of the moving assembly includes the inertia of the moving assembly keeping moving in the second direction in the process of the pressing portion 560 hitting the support surface in the second direction. It can be understood that the dead weight and inertial force of the moving assembly make the at least three support leg assemblies 300 "automatically" open, thereby facilitating the use of the multi-leg support.

[0182] It can be understood that the pressing portion 560 of the preliminary opening member 500 hits the support surface in the second direction, the moving assembly still keeps the inertia of moving in the second direction.

[0183] In the process of the preliminary opening of the at least three support leg assemblies 300 relative to the support rod assembly 100, the sliding sleeve assembly 200 slides along the second direction under the inertial effect of the moving assembly, the gravity center of the sliding sleeve assembly 200 drops, the at least three support leg assemblies 300 open relative to the support rod assembly 100 under the inertial effect and the gravity effect of the moving assembly, the gravity center of the support leg assembly 300 drops, the connecting rod 400 opens relative to the support rod assembly 100 under the inertial effect and the gravity effect of the moving assembly, the gravity center of the connecting rod 400 drops, and thus the at least three support leg assemblies 300 open relative to the support rod assembly 100.

[0184] In some implementations of the embodiments of the present application, referring to Figure 6 、 Figure 18 and the like, the support leg assembly 300 has a contact surface 302, the contact portion 540 contacts the contact surface 302 of the corresponding support leg assembly 300 in the process of the preliminary opening member 500 translating along the first direction, and the angle between the outer normal direction of the contact surface 302 and the first direction is greater than 90° to facilitate the preliminary opening of the support leg assembly 300 relative to the support rod assembly 100. The angle between the outer normal direction of the contact surface 302 and the first direction is greater than 90°, the contact portion 540 pushes the contact surface 302 in the process of the preliminary opening member 500 translating along the first direction, and thus the preliminary opening of the support leg assembly 300 relative to the support rod assembly 100 is facilitated. Exemplarily, the contact surface 302 is a plane or a curved surface.

[0185] Exemplarily, the contact surfaces 302 of the at least three support leg assemblies 300 enclose a rotating space, and the cross-sectional area of the rotating space gradually decreases from bottom to top, so as to facilitate the preliminary opening member 500 to push open the corresponding support leg assembly 300 to make the support leg assembly 300 preliminarily open relative to the support rod assembly 100 in the process of the preliminary opening member 500 translating along the first direction.

[0186] Specifically, the contact surface 302 is in contact with the support surface when the at least three support leg assemblies 300 are spread to the maximum spread state relative to the support pole assembly 100 and the at least three support leg assemblies 300 are supported on the support surface. More specifically, the support leg assembly 300 comprises an anti-skid pad 330 and a support leg body 310, the anti-skid pad 330 is arranged at the bottom end of the support leg body 310, and the contact surface 302 is located at the anti-skid pad 330.

[0187] In other cases, the angle between the outer normal direction of the contact surface 302 and the first direction is 90° or less than 90° during the translation of the preliminary opening piece 500 along the first direction, and the translation of the preliminary opening piece 500 along the first direction does not affect the spread of the support leg assembly 300 relative to the support pole assembly 100, and the rotation of the preliminary opening piece 500 around the rotation axis 501 causes the preliminary opening of the support leg assembly 300 relative to the support pole assembly 100.

[0188] The embodiment of the present application also provides a terminal support device, which refers to Figure 28 , comprising a support piece 720 and a multi-leg support, the support piece 720 is used for supporting an electronic terminal, and the support piece 720 is mounted on the support pole assembly 100 of the multi-leg support. For example, the support piece 720 is directly or indirectly mounted on the support pole assembly 100, for example, a connecting arm 710 is mounted on the support pole assembly 100, and the connecting arm 710 is mounted on the support pole assembly 100. Specifically, the support piece 720 is rotatably mounted on the connecting arm 710, and the support piece 720 rotates relative to the connecting arm 710 to adjust the width (for example, the horizontal width, the vertical width, the inclined width, etc.) of the electronic terminal, and more specifically, the support piece 720 can rotate around the connecting arm 710. Specifically, the connecting arm 710 is rotatably mounted on the support pole assembly 100, and the connecting arm 710 rotates relative to the support pole assembly 100 to adjust the use angle of the electronic terminal, and when the terminal support device needs to be stored, the connecting arm 710 can be folded on the support pole assembly 100, or the connecting arm 710 is folded on the support leg assembly 300 in the folded state.

[0189] For example, the supporting member 720 can be a clamp for clamping the electronic terminal, the clamp comprising a clamp body and two clamping portions, the two clamping portions clamping the opposite two sides of the electronic terminal respectively, the clamp body being elastically extendable to adjust the clamping width of the clamp, and the clamping portions being accommodated in the clamp body. For example, the supporting member 720 can be a suction cup for sucking the electronic terminal, for example, the suction cup can be sucked to the back of the electronic terminal. For example, the supporting member 720 can be a magnetic member 320 for magnetically attracting the electronic terminal, the magnetic member 320 can be an electromagnet or a permanent magnet. For example, the supporting member 720 can be a tray for supporting the electronic terminal, the electronic terminal being placed on the tray. For example, the supporting member 720 can be a clamping member for clamping the electronic terminal. For example, the supporting member 720 is threadedly connected with the electronic terminal, for example, one of the supporting member 720 and the electronic terminal is provided with a threaded column, and the other is provided with a threaded hole.

[0190] The embodiment of the present application also provides a use method of the multi-leg support. The use method comprises the following steps: providing the multi-leg support, at least three support leg assemblies 300 of the multi-leg support are folded on the support rod assembly 100 of the multi-leg support, the preliminary opening member 500 of the multi-leg support is in the initial position, the preliminary opening member 500 has a rotating adjusting part, the number of the support leg assemblies 300 is three, the number of the touch parts 540 is three, the rotating adjusting part comprises three adjusting pieces 550, the three adjusting pieces 550 are centrally symmetric about the rotation axis 501 of the preliminary opening member 500, the three adjusting pieces 550 are respectively connected to the corresponding three touch parts 540, and the two adjacent adjusting pieces 550 are the force applying space 505; placing three fingers of a user in the three force applying spaces 505 respectively; rotating the arm of the user to apply a rotation torque of the preliminary opening member 500 about the rotation axis 501 of the preliminary opening member 500, so that the rotating adjusting part rotates about the rotation axis 501 of the preliminary opening member 500, so that the preliminary opening member 500 rotates from the initial position to the second position, and at least three support leg assemblies 300 are preliminarily opened relative to the support rod assembly 100; and opening at least three support leg assemblies 300 relative to the support rod assembly 100.

[0191] It can be understood that the rotation torque of the preliminary opening member 500 is applied by the three fingers and the arm, so that the preliminary opening member 500 is more easily rotated, thereby facilitating the use of the multi-leg support. In the state that at least three support leg assemblies 300 are preliminarily opened relative to the support rod assembly 100, there are various ways to open at least three support leg assemblies 300 relative to the support rod assembly 100, for example, the user more easily uses the hand to pry the support leg assemblies 300 relative to the support rod assembly 100, or the user more easily slides the sleeve assembly 200, so that the support leg assemblies 300 are in an open state relative to the support rod assembly 100.

[0192] Further, the sliding sleeve assembly 200 slides in the second direction during the process that the at least three support leg assemblies 300 change from being folded to being preliminarily unfolded relative to the support rod assembly 100; the step of unfolding the at least three support leg assemblies 300 relative to the support rod assembly 100 comprises: the second direction is along the direction of gravity, and the dead weight of the moving assembly causes the at least three support leg assemblies 300 to unfold relative to the support rod assembly 100, the moving assembly comprises the sliding sleeve assembly 200, the at least three support leg assemblies 300 and the at least three connecting rods 400 of the multi-leg support. The multi-leg support can be "automatically unfolded" by the dead weight of the moving assembly, reducing the manual operation of the user, thereby facilitating the use of the multi-leg support. Obviously, the dead weight of the moving assembly is greater than the resistance force acting on the moving assembly.

[0193] The embodiment of the present application also provides a use method of the multi-leg support, characterized in that the use method comprises: providing the multi-leg support, the at least three support leg assemblies 300 of the multi-leg support are folded to the support rod assembly 100 of the multi-leg support, and the preliminary unfolding part 500 of the multi-leg support is in the initial position, the preliminary unfolding part 500 has a pressing part 560; the pressing part 560 is pressed in the first direction to make the preliminary unfolding part 500 translate in the first direction, so that the preliminary unfolding part 500 rotates relative to the support rod assembly 100, and the at least three support leg assemblies 300 are preliminarily unfolded relative to the support rod assembly 100; and the at least three support leg assemblies 300 are unfolded relative to the support rod assembly 100.

[0194] Further, the sliding sleeve assembly 200 slides in the second direction during the process that the at least three support leg assemblies 300 change from being folded to being preliminarily unfolded relative to the support rod assembly 100; the step of unfolding the at least three support leg assemblies 300 relative to the support rod assembly 100 comprises: the second direction is along the direction of gravity, and the dead weight of the moving assembly causes the at least three support leg assemblies 300 to unfold relative to the support rod assembly 100, the moving assembly comprises the sliding sleeve assembly 200, the at least three support leg assemblies 300 and the at least three connecting rods 400 of the multi-leg support. The multi-leg support can be "automatically unfolded" by the dead weight of the moving assembly, reducing the manual operation of the user, thereby facilitating the use of the multi-leg support.

[0195] Further, the sliding sleeve assembly 200 slides in the second direction during the process that the at least three support leg assemblies 300 relative to the support rod assembly 100 are folded to the process that the at least three support leg assemblies 300 relative to the support rod assembly 100 are preliminarily opened; the step that the pressure applying part 560 is pressed in the first direction to make the preliminarily opening part 500 translate in the first direction includes: the pressure applying part 560 of the preliminarily opening part 500 hits the support surface in the second direction to make the preliminarily opening part 500 translate in the first direction relative to the support rod assembly 100, the second direction is along the direction of gravity; the step that the at least three support leg assemblies 300 are opened relative to the support rod assembly 100 includes: the dead weight and inertia of the moving assembly make the at least three support leg assemblies 300 open relative to the support rod assembly 100, the moving assembly includes the sliding sleeve assembly 200, the at least three support leg assemblies 300 and the at least three connecting rods 400 of the multi-leg support, the inertia of the moving assembly includes the inertia that the moving assembly keeps moving in the second direction during the process that the pressure applying part 560 hits the support surface in the second direction. The multi-leg support is automatically opened by the dead weight and inertia of the moving assembly, and the support leg assemblies 300 of the multi-leg support are opened faster by the dead weight and inertia of the moving assembly, so that the use of the multi-leg support is facilitated.

[0196] The embodiment of the present application also provides a use method of the multi-leg support, characterized in that the use method includes: providing the multi-leg support, the at least three support leg assemblies 300 of the multi-leg support are folded to the support rod assembly 100 of the multi-leg support, the preliminarily opening part 500 of the multi-leg support is in the initial position, and the multi-leg support has a force applying part; the force applying part is pressed in the first direction to make the force applying part translate in the first direction, so that the preliminarily opening part 500 rotates relative to the support rod assembly 100, and the at least three support leg assemblies 300 are preliminarily opened relative to the support rod assembly 100; and the at least three support leg assemblies 300 are opened relative to the support rod assembly 100.

[0197] Reference Figures 29-55The embodiment of the present application provides a multi-leg support, which comprises a support rod assembly 100, a sliding sleeve assembly 200, at least three support leg assemblies 300, at least three connecting rods 400 and a preliminary opening piece 500, the sliding sleeve assembly 200 is sleeved on the support rod assembly 100 in the length direction of the support rod assembly 100, the at least three support leg assemblies 300 are rotationally connected to the sliding sleeve assembly 200 respectively, the at least three connecting rods 400 correspond to the at least three support leg assemblies 300 respectively, one end of the connecting rod 400 is rotationally connected to the support rod assembly 100, the other end is rotationally connected to the corresponding support leg assembly 300, and the at least three support leg assemblies 300 can be opened or folded relative to the support rod assembly 100; in the initial state, the at least three support leg assemblies 300 are kept in the state of being folded on the support rod assembly 100; in the state that the at least three support leg assemblies 300 are opened relative to the support rod assembly 100, the at least three support leg assemblies 300 can be supported on a support surface; the preliminary opening piece 500 is slidingly installed on the support rod assembly 100, a second external action applied to the preliminary opening piece 500 can make the preliminary opening piece 500 translate in a first direction relative to the support rod assembly 100, the preliminary opening piece 500 has at least three pushing and touching parts 570, the at least three pushing and touching parts 570 correspond to the at least three support leg assemblies 300 respectively; in the process that the preliminary opening piece 500 translates from the initial position to a third position, the pushing and touching part 570 pushes and touches the corresponding support leg assembly 300 to make the at least three support leg assemblies 300 fold relative to the support rod assembly 100 change into the at least three support leg assemblies 300 being preliminarily opened relative to the support rod assembly 100.

[0198] Understandably, the translation of the preliminary opening piece 500 relative to the support rod assembly 100 makes the at least three support leg assemblies 300 be preliminarily opened relative to the support rod assembly 100, so that the at least three support leg assemblies 300 are more easily opened relative to the support rod assembly 100, and the use of the multi-leg support is facilitated.

[0199] Understandably, in the process that the pushing and touching part 570 pushes and touches the corresponding support leg assembly 300 to make the at least three support leg assemblies 300 fold relative to the support rod assembly 100 change into the at least three support leg assemblies 300 being preliminarily opened relative to the support rod assembly 100, the pushing and touching part 570 slides relative to the support rod assembly 100 and pushes open the corresponding support leg assembly 300 to make the at least three support leg assemblies 300 fold relative to the support rod assembly 100 change into the at least three support leg assemblies 300 being preliminarily opened relative to the support rod assembly 100.

[0200] For example only, the sliding direction of the preliminary opening piece 500 is along the length direction of the support rod assembly 100, more specifically, the sliding direction of the preliminary opening piece 500 is along the central axis of the support rod assembly 100.

[0201] It can be understood that, Figures 29-55 The embodiment shown in the figure is different from the embodiment shown in the figure in that the connection mode of the preliminary opening piece 500 and the support rod assembly 100 is different, and the preliminary opening mode of the preliminary opening piece 500 to the support rod assembly 100 is different. Figures 1-27 The embodiment shown in the figure is different from the embodiment shown in the figure in that the connection mode of the preliminary opening piece 500 and the support rod assembly 100 is different, and the preliminary opening mode of the preliminary opening piece 500 to the support rod assembly 100 is different.

[0202] In some implementations, with reference to Figure 36 、 Figure 37 , the support rod assembly 100 is provided with a mounting cavity 101, and the preliminary opening piece 500 is in sliding fit with the mounting cavity 101 of the support rod assembly 100; or, the preliminary opening piece 500 is provided with a mounting cavity 101, and the support rod assembly 100 is in fit with the mounting cavity 101 of the preliminary opening piece 500.

[0203] Specifically, when the preliminary opening piece 500 slides relative to the support rod assembly 100, the second external action includes an action force on the preliminary opening piece 500 in the first direction, and an action force is applied to the preliminary opening piece 500 to make the preliminary opening piece 500 translate in the first direction relative to the support rod assembly 100.

[0204] It should be understood that the initial position of the preliminary opening piece 500 can refer to a specific position or a range of positions; the third position of the preliminary opening piece 500 can refer to a specific position or a range of positions, for example, any position that can make the support leg assembly 300 in the preliminary opening state can be the third position of the preliminary opening piece 500.

[0205] It should be understood that the translation direction of the preliminary opening piece 500 can be in the first direction, or the translation direction of the preliminary opening piece 500 can be in the opposite direction of the first direction.

[0206] In some implementations, the second external action includes an action force on the preliminary opening piece 500 in the first direction. It can be understood that the action force in the first direction applied to the preliminary opening piece 500 makes the preliminary opening piece 500 translate from the initial position to the third position, so that the pushing part 570 pushes the corresponding support leg assembly 300 to make at least three support leg assemblies 300 relative to the support rod assembly 100. The folding changes to at least three support leg assemblies 300 relative to the support rod assembly 100 are preliminarily opened.

[0207] It should be understood that the second external action is an action force acting on the preliminary opening member 500 and in the first direction, or one component of the second external action is an action force acting on the preliminary opening member 500 and in the first direction. More specifically, the action force is a pushing force directed towards the support pole assembly 100, the user can manually press the preliminary opening member 500, or the preliminary opening member 500 hits the support surface to achieve the pressing of the preliminary opening member 500. The action force can also be a pulling force away from the support pole assembly 100, for example, the user can pull the preliminary opening member 500. It can be understood that the action force overcomes the resistance that the preliminary opening member 500 receives (which includes the frictional resistance between the preliminary opening member 500 and the support pole assembly 100), so that the preliminary opening member 500 translates relative to the support pole assembly 100 in the first direction.

[0208] For example, the first direction is along the length direction of the support pole assembly 100, for example, the preliminary opening member 500 is installed at the bottom end of the support pole assembly 100, and the first direction is the direction of the bottom end of the support pole assembly 100 pointing to the top end thereof.

[0209] In some implementations, with reference to Figure 33 、 Figure 36 、 Figure 37 、 Figure 42 、 Figure 50 and the like, the multi-leg support further comprises a reset spring 610 acting on the preliminary opening member 500, and the reset spring 610 causes the preliminary opening member 500 to return from the third position to the initial position. It can be understood that the reset spring 610 causes the preliminary opening member 500 to return to the initial position, avoiding the preliminary opening member 500 from interfering with the folding of the support leg assembly 300 relative to the support pole assembly 100, in particular, avoiding the touch pushing part 570 of the preliminary opening member 500 from interfering with the folding of the support leg assembly 300 relative to the support pole assembly 100.

[0210] It can be understood that in the process of the second external action causing the preliminary opening member 500 to move relative to the support pole assembly 100, the resistance that the preliminary opening member 500 receives further includes the elastic force that the reset spring 610 exerts on the preliminary opening member 500.

[0211] For another example, in the state that the at least three support leg assemblies 300 are preliminarily opened relative to the support pole assembly 100, the reset spring 610 causes the preliminary opening member 500 to return from the third position to the initial position.

[0212] For example, the reset spring 610 can be a columnar spring, a tower spring, a torsion spring, etc. In some cases, the reset spring 610 is a columnar spring or a tower spring, and the force of the reset spring 610 on the preliminary opening piece 500 is a force acting on the preliminary opening piece 500 in the direction of translation of the preliminary opening piece 500, which is a pulling force or a pushing force of the reset spring 610 on the preliminary opening piece 500.

[0213] In some implementations, with reference to Figure 33 、 Figure 36 、 Figure 37 、 Figure 42 、 Figure 50 etc., the preliminary opening piece 500 has a mounting column 520, the support rod assembly 100 has a mounting cavity 101, the mounting column 520 is slidingly mounted in the mounting cavity 101, and the at least three push-contacting portions 570 are all connected to the mounting column 520; the mounting column 520 has a first abutting wall 503 located in the accommodating cavity, the support rod assembly 100 has a second abutting wall 102 located in the mounting cavity 101; the reset spring 610 is a columnar spring or a tower spring, a first end of the reset spring 610 abuts against the first abutting wall 503, and a second end of the reset spring 610 abuts against the second abutting wall 102; during the process in which the preliminary opening piece 500 is translated from the initial position to the third position, the mounting column 520 moves towards the second abutting wall 102, and the reset spring 610 is compressed. Understandably, the mounting column 520 is slidingly mounted in the mounting cavity 101, and the reset spring 610 is a columnar spring or a tower spring, so that the reset spring 610 is easily compressed, and the reset spring 610 does not hinder the translation of the preliminary opening piece 500.

[0214] For example, the columnar spring can be a cylindrical spring, a square columnar spring, a polygonal columnar spring, etc., and the tower spring can be a conical spring, a circular truncated cone spring, a polygonal tower spring, etc. The force of the reset spring 610 on the preliminary opening piece 500 is a force acting on the preliminary opening piece 500 in the direction of translation of the preliminary opening piece 500, which is a pushing force of the reset spring 610 on the preliminary opening piece 500. Understandably, the second external force includes a pushing force acting on the preliminary opening piece 500 in the direction of translation.

[0215] In some implementations, with reference to Figure 33 、 Figure 36 、 Figure 37 、 Figure 42 、 Figure 50The mounting column 520 is provided with a receiving cavity 502, the receiving cavity 502 is communicated to one end of the mounting column 520, and the first abutting wall 102 is located in the receiving cavity 502; the first end of the reset spring 610 is accommodated in the receiving cavity 502. It can be understood that the first end of the reset spring 610 is accommodated in the receiving cavity 502, so that the reset spring 610 is at least partially accommodated in the receiving cavity 502, so that the overall structure of the multi-leg support is compact. Moreover, the first end of the reset spring 610 is accommodated in the receiving cavity 502, so that the reset spring 610 is limited to be located in the preliminary opening piece 500, so that the reset spring 610 is not easy to bend or deviate from its use position in the stretching and retracting process.

[0216] In some implementations, with reference to Figure 33 、 Figure 36 、 Figure 37 、 Figure 42 、 Figure 50 and the like, the preliminary opening piece 500 further comprises a connecting column 530, the connecting column 530 is connected to the mounting column 520, and the reset spring 610 is sleeved on the connecting column 530; the support rod assembly 100 has a blocking part 122, in the state that the preliminary opening piece 500 is in the initial position, the blocking part 122 blocks the connecting column 530 to avoid the preliminary opening piece 500 from deviating from the support rod assembly 100; the preliminary opening piece 500 further comprises a blocking piece 580 mounted on the connecting column 530, in the state that the preliminary opening piece 500 is in the initial position, the blocking piece 580 abuts against the blocking part 122 to achieve that the blocking part 122 blocks the connecting column 530; in the process that the preliminary opening piece 500 returns from the third position to the initial position, the reset spring 610 acts on the preliminary opening piece 500 to make the blocking piece 580 move towards the blocking part 122. It can be understood that the blocking part 122 blocks the connecting column 530 of the preliminary opening piece 500, so that the preliminary opening piece is limitedly mounted on the support rod assembly 100, avoiding that the preliminary opening piece 500 deviates from the support rod assembly 100 under the action of the reset spring 610. The reset spring 610 is sleeved on the connecting column 530, so that the reset spring 610 is not easy to bend or deviate from its use position in the stretching and retracting process, and also makes the structure of the multi-leg support compact.

[0217] For example, the preliminary opening piece 500 further comprises a fourth fastener 590, the fourth fastener 590 is fastened and connected through the blocking piece 580 and the connecting column 530, and the fourth fastener 590 is used to mount the blocking piece 580 on the connecting column 530.

[0218] For example, the connecting column 530 is slidingly mounted on the support rod assembly, and the support rod assembly is provided with a through hole 103; the connecting column 530 is slidingly mounted on the through hole 103 of the support rod assembly, so that the preliminary opening piece is slidingly mounted on the support rod assembly.

[0219] In some implementations, with reference to Figure 33 , Figure 36 、 Figure 37 、 Figure 42 、 Figure 50 In the state where the preliminary opening piece 500 is in the initial position, the connecting column 530 directly or indirectly abuts against the blocking portion 122.

[0220] In some implementations, referring to Figure 33 、 Figure 36 、 Figure 37 、 Figure 42 、 Figure 50 In some implementations, referring to

[0221] Specifically, the mounting piece 120 is provided with a through hole 103, and the connecting column 530 is slidingly mounted in the through hole 103 of the support rod assembly 100, so that the preliminary opening piece 500 is slidingly mounted in the support rod assembly 100.

[0222] In some implementations, referring to Figure 33 、 Figure 36 、 Figure 37 、 Figure 42 、 Figure 50 In some implementations, referring to

[0223] Specifically, the installation cavity 101 is communicated to the installation portion 123, and the blocking portion 122 is arranged on the installation portion 123. The second fastener 130 is fastened and connected with the first installation sub-piece 120a through the support rod body 110.

[0224] In some implementations, with reference to Figure 33 、 Figure 36 、 Figure 37 、 Figure 42 、 Figure 50 and the like, the preliminary opening piece 500 has a pressing portion 560, and the second external action includes an action force acting on the preliminary opening piece 500 and in the first direction; pressing the pressing portion 560 in the first direction causes the preliminary opening piece 500 to translate in the first direction relative to the support rod assembly 100, so that the preliminary opening piece 500 translates from the initial position to the third position. Understandably, the user presses the pressing portion 560, which facilitates the user to rotate the preliminary opening piece 500 relative to the support rod assembly 100 in a pressing manner, so that the support foot assembly 300 is preliminarily opened relative to the support rod assembly 100, thereby facilitating the use of the multi-foot support. For example, the user presses the pressing portion 560 with his hand, and for example, the user hits the support surface to press the preliminary opening piece 500.

[0225] For example, at least three adjusting pieces 550 are connected to the pressing portion 560, and at least three pushing portions 570 are connected to the pressing portion 560, which can enhance the structural strength of the preliminary opening piece 500.

[0226] In some implementations, with reference to Figure 33 、 Figure 36 、 Figure 37 、 Figure 42 、 Figure 50 and the like, the preliminary opening piece 500 is installed at the bottom end of the support rod assembly 100; in the state that the at least three support foot assemblies 300 are folded relative to the support rod assembly 100, the pressing portion 560 protrudes from the bottom end of the support foot assembly 300; in the state that the at least three support foot assemblies 300 are folded relative to the support rod assembly 100, the pressing portion 560 of the preliminary opening piece 500 hits the support surface to cause the support surface to press the pressing portion 560 in the first direction, so that the preliminary opening piece 500 translates in the first direction relative to the support rod assembly 100, and further translates from the initial position to the third position.

[0227] Understandably, the preliminary opening piece 500 is at the bottom end of the support rod assembly 100, and the pressing portion 560 protrudes from the bottom end of the support foot assembly 300, which facilitates the pressing portion 560 of the preliminary opening piece 500 to hit the support surface. By hitting the support surface with the pressing portion 560, it is easier to press the pressing portion 560.

[0228] In some implementations, with reference to Figure 33、 Figure 36 、 Figure 37 、 Figure 42 、 Figure 50 and so on, the preliminary opening piece 500 has a pressing part 560, the second external action includes an action force acting on the preliminary opening piece 500 and along the first direction, the pressing part 560 is pressed along the first direction so that the preliminary opening piece 500 translates along the first direction relative to the support rod assembly 100 and then the preliminary opening piece 500 translates from the initial position to the third position; the sliding sleeve assembly 200 slides along the second direction in the process that the at least three support leg assemblies 300 change from being folded relative to the support rod assembly 100 to being preliminarily opened relative to the support rod assembly 100; when the at least three support leg assemblies 300 are folded relative to the support rod assembly 100 and the second direction is along the direction of gravity, the pressing part 560 of the preliminary opening piece 500 hits the support surface along the second direction, the preliminary opening piece 500 translates along the first direction relative to the support rod assembly 100 and then the at least three support leg assemblies 300 are preliminarily opened relative to the support rod assembly 100, after the pressing part of the preliminary opening piece 500 hits the support surface along the second direction and the second direction is along the direction of gravity so that the at least three support leg assemblies 300 are preliminarily opened relative to the support rod assembly 100, the dead weight action and the inertial action of the moving assembly make the at least three support leg assemblies 300 open relative to the support rod assembly 100, the moving assembly includes the sliding sleeve assembly 200, the at least three support leg assemblies 300 and the at least three connecting rods 400. It can be understood that the dead weight action and the inertial action of the moving assembly make the at least three support leg assemblies 300 “automatically” open, thereby facilitating the use of the multi-leg support.

[0229] It can be understood that the pressing part 560 of the preliminary opening piece 500 hits the support surface along the second direction, the moving assembly still maintains the inertia of moving along the second direction.

[0230] In the process of the preliminary opening of the at least three support leg assemblies 300 relative to the support bar assembly 100, the sliding sleeve assembly 200 slides along the second direction under the inertial action, the gravity center of the sliding sleeve assembly 200 drops, and the at least three support leg assemblies 300 are opened relative to the support bar assembly 100. In some cases, the gravity action of the moving assembly further includes the gravity action of the support leg assemblies 300 and the connecting rod 400, and the inertial action of the moving assembly further includes the inertial action of the support leg assemblies 300 and the connecting rod 400. In the process of the preliminary opening of the at least three support leg assemblies 300 relative to the support bar assembly 100, the sliding sleeve assembly 200 slides along the second direction under the gravity action and the inertial action of the moving assembly, the gravity center of the sliding sleeve assembly 200 drops, the support leg assemblies 300 slide along with the sliding sleeve assembly 200 at one end and are opened relative to the support bar assembly 100 at the other end under the gravity action and the inertial action of the support leg assemblies 300, the gravity center of the support leg assemblies 300 drops, the connecting rod 400 is preliminarily opened relative to the support bar assembly 100 under the gravity action and the inertial action of the connecting rod 400 and is opened relative to the support bar assembly 100, the gravity center of the connecting rod 400 drops, and thus the at least three support leg assemblies 300 are opened relative to the support bar assembly 100.

[0231] In some implementations, with reference to Figure 33 、 Figure 36 、 Figure 37 、 Figure 42 、 Figure 50 and the like, the support leg assembly 300 has a contact surface 302. In the process of the preliminary opening member 500 translating along the first direction, the contact surface 302 is contacted by the contact pushing part 570, and the angle between the outer normal direction of the contact surface 302 and the first direction is greater than 90° to facilitate the preliminary opening of the support leg assembly 300 relative to the support bar assembly 100. The angle between the outer normal direction of the contact surface 302 and the first direction is greater than 90°, in the process of the preliminary opening member 500 translating along the first direction, the contact surface 302 is pushed by the contact pushing part 570, thereby facilitating the preliminary opening of the support leg assembly 300 relative to the support bar assembly 100. For example, the contact surface 302 is a plane or a curved surface.

[0232] Specifically, when the at least three support leg assemblies 300 are spread to the maximum spread state relative to the support pole assembly 100 and are supported on the support surface, the contact surface 302 is in contact with the support surface. More specifically, the support leg assembly 300 comprises an anti-skid pad 330 and a support leg body 310, the anti-skid pad 330 is arranged at the bottom end of the support leg body 310, and the contact surface 302 is located on the anti-skid pad 330.

[0233] In some implementations, with reference to Figure 33 , Figure 36 , Figure 37 , Figure 42 , Figure 47 , Figure 50 and the like, the first external action comprises a rotational torque acting on the preliminary opening member 500 and about the rotational axis 501 thereof; it can be understood that the number of the actuating portions 540 is the same as that of the pushing portions 570.

[0234] Specifically, the at least three actuating portions 540 and the at least three pushing portions 570 are arranged alternately, each actuating portion 540 is located between two adjacent pushing portions 570, and each pushing portion 570 is located between two adjacent actuating portions 540.

[0235] In some implementations, with reference to Figure 34 , Figure 37 and the like, during the rotation of the preliminary opening member 500 relative to the support pole assembly 100, the preliminary opening member 500 can be kept in any one of at least three holding positions, the number of the holding positions is the same as that of the support leg assemblies 300; any one of the at least three holding positions is an initial position, and the holding position adjacent to the initial position is a second position.

[0236] It can be understood that any one of the at least three holding positions is the initial position, that is, the preliminary opening member 500 in any holding position is equivalent to the preliminary opening member 500 in the initial position, and the rotation of the preliminary opening member 500 can cause the actuating portions 540 to actuate the corresponding support leg assemblies 300, or the translation of the preliminary opening member 500 in the first direction can cause the pushing portions 570 to push the corresponding support leg assemblies 300.

[0237] It can be understood that the corresponding support leg assemblies 300 of the actuating portions 540 are different in different corresponding holding positions of the preliminary opening member 500, and the corresponding support leg assemblies 300 of the pushing portions 570 are different in different corresponding holding positions of the preliminary opening member 500.

[0238] For example, the number of the support leg assemblies 300 is 3, 4, 5, etc., and the number of the holding positions is 3, 4, 5, etc.

[0239] It can be understood that the holding position can refer to a specific position or a range of positions. During the rotation of the preliminary opening piece 500 relative to the support rod assembly 100, the preliminary opening piece 500 is kept in the holding position without external action on the preliminary opening piece 500, or the preliminary opening piece 500 is kept in the holding position when the first external action has a rotation torque smaller than the holding torque of the preliminary opening piece 500.

[0240] In some implementations, referring to Figure 34 , Figure 37 and the like, the multi-leg support further comprises a reset spring 610 acting on the preliminary opening piece 500. The preliminary opening piece 500 has a first clamping part 581, and the support rod assembly 100 has a second clamping part 122a. The first clamping part 581 is clamped at different positions of the second clamping part 122a to keep the preliminary opening piece 500 in different holding positions. During the rotation of the preliminary opening piece 500 relative to the support rod assembly 100 under the first external action, the preliminary opening piece 500 slides relative to the support rod assembly 100 and the reset spring 610 is stretched and contracted. The first clamping part 581 is disengaged from or clamped to the second clamping part 122a. When the rotation of the preliminary opening piece 500 relative to the support rod assembly 100 stops, the reset spring 610 acts on the preliminary opening piece 500 to make the first clamping part 581 clamped to the second clamping part 122a. The reset spring 610 makes the preliminary opening piece 500 return to the initial position.

[0241] It can be understood that the reset spring 610 makes the first clamping part 581 clamped to the second clamping part 122a on one hand, and on the other hand, the stretching and contraction of the reset spring 610 also facilitates the disengagement of the first clamping part 581 from the second clamping part 122a. During the clamping of the first clamping part 581 to the second clamping part 122a or the disengagement of the first clamping part 581 from the second clamping part 122a, the reset spring 610 is stretched and contracted. The multiple uses of the reset spring 610 also make the structure of the multi-leg support compact.

[0242] It can be understood that the first clamping part 581 can be clamped at at least three positions of the second clamping part 122a, so that the preliminary opening piece 500 can be kept in at least three holding positions.

[0243] For example, the first clamping part 581 is arranged on the blocking piece 580 of the preliminary opening piece 500, and the second clamping part 122a is arranged on the mounting piece 120 of the support rod assembly 100, more specifically, the second clamping part 122a is arranged on the second mounting sub-piece 120b.

[0244] In some implementations, referring to Figure 34 , 37The first holding portion 581 includes at least one first holding protrusion, and the second holding portion 122a includes at least three second holding grooves. At least one first holding protrusion is held in different at least one second holding groove so that the first holding portion 581 is held in different positions in the second holding portion 122a. The second holding grooves are open so that the first holding protrusion can disengage from the second holding groove during the rotation of the initial opening member 500 relative to the support rod assembly 100. During the rotation of the initial opening member 500 relative to the support rod assembly 100 to disengage the first holding protrusion from the second holding groove, the first holding protrusion slides across the inner wall of the second holding groove. When the initial opening member 500 stops rotating relative to the support rod assembly 100, the return spring 610 acts on the initial opening member 500 to hold at least one first holding protrusion into the corresponding at least one second holding groove.

[0245] Understandably, the second retaining groove is open to facilitate the first retaining protrusion disengaging from the second retaining groove during the process of applying a first external force to the initial opening member 500 to rotate relative to the support rod assembly 100.

[0246] For example, the second retaining groove is V-shaped.

[0247] In other embodiments, the first holding portion 581 includes at least three first holding grooves, and the second holding portion 122a includes at least one second holding protrusion. The at least one second holding protrusion is held in different at least one first holding groove so that the first holding portion 581 is held in different positions in the second holding portion 122a. The first holding groove is open. During the process of the initial opening member 500 applying a first external force to rotate the initial opening member 500 relative to the support rod assembly 100, the second holding protrusion slides across the inner wall of the first holding groove. Understandably, the first retaining groove is open, facilitating the disengagement of the second retaining protrusion from the first retaining groove during the rotation of the initial opening member 500 relative to the support rod assembly 100 caused by the application of a first external force to the initial opening member 500. During this rotation, the second retaining protrusion slides across the inner wall of the first retaining groove. When the initial opening member 500 stops rotating relative to the support rod assembly 100, the return spring 610 acts on the initial opening member 500 to engage at least one second retaining protrusion with at least one corresponding first retaining groove. For example, the first retaining groove may be V-shaped.

[0248] In some implementation methods, refer to Figure 34 , Figure 37The support rod assembly 100 has at least three partition protrusions 122b, which are staggered with at least three second retaining grooves. The space between two adjacent partition protrusions 122b is a second retaining groove. The partition protrusions 122b gradually narrow along a first direction, and the first side portion 581a of the first retaining protrusion gradually narrows in the opposite direction to the first direction, so that when the initial opening member 500 stops rotating relative to the support rod assembly 100, at least one first retaining protrusion engages with at least one corresponding second retaining groove. The first side portion 581a of the first retaining protrusion is on the side of the first retaining protrusion near the partition protrusion 122b.

[0249] Understandably, both the dividing protrusion 122b and the first side of the first retaining protrusion gradually narrow, facilitating the insertion of the first retaining protrusion into the second retaining groove. Understandably, the inner wall of the second retaining groove is on the dividing protrusion, and the retaining portion includes the dividing protrusion 122b.

[0250] Understandably, when the initial opening member 500 rotates relative to the support rod assembly 100 to any angle, the first retaining protrusion of the initial opening member 500 can engage or disengage from the second retaining groove under the action of the return spring 610. For example, when the initial opening member 500 rotates to a certain angle, the first retaining protrusion is precisely aligned with the second retaining groove, and under the action of the return spring 610, the first retaining protrusion of the initial opening member 500 engages with the second retaining groove. As another example, when the initial opening member 500 rotates to another angle, the second retaining protrusion is not aligned with the second retaining groove, and under the action of the return spring 610, the first retaining protrusion of the initial opening member 500 engages with the second retaining groove, and the initial opening member 500 rotates during the process of the first retaining protrusion engaging with the second retaining groove.

[0251] In some implementation methods, refer to Figure 34 , Figure 37 The initial opening member 500 has a stop member 580, and the support rod assembly 100 has a retaining portion 122. When the initial opening member 500 is in its initial position, the retaining portion 122 retains the stop member 580 to prevent the initial opening member 500 from disengaging from the support rod assembly 100. The stop member 580 includes a first retaining portion 581, and the retaining portion 122 includes a second retaining portion 122a. The second retaining portion 122a retains the first retaining portion 581 so that the retaining portion 122 retains the stop member 580. It is understood that the first retaining portion 581 and the second retaining portion 122a are used both to hold the initial opening member 500 in different holding positions and to prevent the initial opening member 500 from disengaging from the support rod assembly 100, thereby making the structure of the multi-legged bracket compact.

[0252] In some implementation methods, refer to Figure 34In the process of rotating the preliminary opening member 500 relative to the support rod assembly 100, the preliminary opening member 500 can be kept in any one of the at least three holding positions, and the number of the holding positions is the same as the number of the support leg assemblies 300; any one of the at least three holding positions is the initial position.

[0253] It should be understood that any one of the at least three holding positions is the initial position, that is, the preliminary opening member 500 in any holding position is equivalent to the preliminary opening member 500 in the initial position, and the preliminary opening member 500 is translated in the first direction to push the pushing part 570 to push the corresponding support leg assembly 300.

[0254] Referring to Figure 29-55 The embodiment of the present application also provides a use method of the multi-leg support, and the use method comprises the following steps: providing the multi-leg support, at least three support leg assemblies 300 of the multi-leg support are folded on a support rod assembly 100 of the multi-leg support, and a preliminary opening member 500 of the multi-leg support is in an initial position; applying pressure to the preliminary opening member 500 in a first direction to make the preliminary opening member 500 translate in the first direction, so that the at least three support leg assemblies 300 are preliminarily opened relative to the support rod assembly 100; and making the at least three support leg assemblies 300 be unfolded relative to the support rod assembly 100.

[0255] It can be understood that the translation of the preliminary opening member 500 in the first direction can make the support leg assemblies 300 be preliminarily opened, so that the support leg assemblies 300 are unfolded relative to the support rod assembly 100.

[0256] In some implementations, in the process of changing the at least three support leg assemblies 300 from being folded relative to the support rod assembly 100 to being preliminarily opened relative to the support rod assembly 100, the sliding sleeve assembly 200 slides in a second direction; and the step of making the at least three support leg assemblies 300 be unfolded relative to the support rod assembly 100 comprises the following step: the second direction is along the direction of gravity, and the dead weight of the moving assembly makes the at least three support leg assemblies 300 be unfolded relative to the support rod assembly 100, and the moving assembly comprises the sliding sleeve assembly 200, the at least three support leg assemblies 300 and the at least three connecting rods 400.

[0257] In some embodiments, the sliding sleeve assembly 200 slides in the second direction during the process that the at least three support leg assemblies 300 are unfolded relative to the support rod assembly 100 from being folded to being preliminarily unfolded; the step of pressing the pressing part 560 in the first direction to make the preliminary unfolding part 500 translate in the first direction includes: the pressing part 560 of the preliminary unfolding part 500 hits the support surface in the second direction to make the preliminary unfolding part 500 translate in the first direction relative to the support rod assembly 100 and rotate relative to the support rod assembly 100, the second direction being along the direction of gravity; the step of unfolding the at least three support leg assemblies 300 relative to the support rod assembly 100 includes: the weight and inertia of the moving assembly make the at least three support leg assemblies 300 unfold relative to the support rod assembly 100, the moving assembly including the sliding sleeve assembly 200, the at least three support leg assemblies 300 and the at least three connecting rods 400 of the multi-leg support.

[0258] The embodiments of the present application also provide a method for using the multi-leg support, the method including: providing the multi-leg support, the at least three support leg assemblies 300 of the multi-leg support being folded relative to the support rod assembly 100 of the multi-leg support, the preliminary unfolding part 500 of the multi-leg support being in the initial position, the preliminary unfolding part 500 having the rotation adjusting part; a user applies a rotation torque around the rotation axis 501 of the rotation adjusting part to the rotation adjusting part of the preliminary unfolding part 500 to make the rotation adjusting part rotate around the rotation axis 501 of the preliminary unfolding part 500 to make the preliminary unfolding part 500 rotate from the initial position to the second position to preliminarily unfold the at least three support leg assemblies 300 relative to the support rod assembly 100; and unfolding the at least three support leg assemblies 300 relative to the support rod assembly 100. It can be understood that the rotation of the preliminary unfolding part 500 can preliminarily unfold the support leg assemblies 300, thereby facilitating the unfolding of the support leg assemblies 300 relative to the support rod assembly 100.

[0259] In some embodiments, the number of the support leg assemblies 300 is three, the number of the touch parts 540 is three, the rotation adjusting part includes three adjusting pieces 550, the three adjusting pieces 550 are centrally symmetric about the rotation axis 501 of the preliminary unfolding part 500, the three adjusting pieces 550 are respectively connected to the corresponding three touch parts 540, and the two adjacent adjusting pieces 550 are the force applying spaces 505; the user places three fingers in the three force applying spaces 505; and the step of preliminarily unfolding the at least three support leg assemblies 300 relative to the support rod assembly 100 includes: the rotation of the arm of the user applies a rotation torque around the rotation axis 501 of the preliminary unfolding part 500 to the preliminary unfolding part 500 to make the rotation adjusting part rotate around the rotation axis 501 of the preliminary unfolding part 500 to make the preliminary unfolding part 500 rotate from the initial position to the second position to preliminarily unfold the at least three support leg assemblies 300 relative to the support rod assembly 100.

[0260] In some implementations, the sliding of the sliding sleeve assembly 200 along the second direction is during the process that the at least three support leg assemblies 300 are folded relative to the support pole assembly 100 to the process that the at least three support leg assemblies 300 are initially unfolded relative to the support pole assembly 100, and the step of unfolding the at least three support leg assemblies 300 relative to the support pole assembly 100 comprises the step of allowing the second direction to be along the direction of gravity, and the weight of the moving assembly causes the at least three support leg assemblies 300 to unfold relative to the support pole assembly 100, the moving assembly comprising the sliding sleeve assembly 200, the at least three support leg assemblies 300 and the at least three connecting poles 400 of the multi-leg support.

[0261] In some other embodiments, please refer to Figures 56 to 59 , the multi-leg support comprises a moving member 522, the moving member 522 is configured to slide relative to the support pole assembly 100 to cause the initial unfolding member 500 to be subjected to the first external force, thereby causing the initial unfolding member 500 to rotate from the initial position to the second position.

[0262] In the present example, the connection between the moving member 522 and the initial unfolding member 500 can be adaptively adjusted and selected according to the sliding position of the moving member 522 relative to the support pole assembly 100. For example, when the moving member 522 slides along the axial direction of the support pole assembly 100, the moving member 522 and the initial unfolding member 500 can be screw-connected. When the moving member 522 slides along the radial direction of the support pole assembly 100, the moving member 522 and the initial unfolding member 500 can form a gear-and-rack structure. The moving member 522 and the initial unfolding member 500 can also be connected in other ways, as long as the linear motion of the moving member 522 relative to the support pole assembly 100 can be converted into the circumferential rotation of the initial unfolding member. For example, the moving member 522 and the initial unfolding member 500 can form a cam mechanism or a crank-and-slider mechanism.

[0263] The movable member 522 is directly or indirectly subjected to an external force to slide relative to the support rod assembly 100 to transmit the external force to the preliminary opening member 500 and apply a first external force to the preliminary opening member 500 to rotate the preliminary opening member 500 from the preliminary position to the second position. For example, the preliminary opening member 500 can be subjected to the first external force by directly or indirectly pressing the movable member 522. For another example, the preliminary opening member 500 can be subjected to the first external force by directly or indirectly pushing the movable member 522. In the case that the user directly presses the movable member 522, the preliminary opening member 500 is indirectly rotated by the movable member 522 which can slide relative to the support rod assembly 100, and the movable member 522 does not rotate, reducing the friction of the movable member 522 to the user's hand. In the case that the user indirectly presses the movable member 522 through an intermediate member, the movable member 522 and the intermediate member do not rotate, reducing the friction of the intermediate member to the user's hand. For example, the intermediate member is the force applying member.

[0264] Further, the movable member 522 and the preliminary opening member 500 are in a split structure, and the preliminary opening member 500 does not need to move up and down, which can reduce the movement resistance, so that the user can press or push the movable member 522 more easily and conveniently, and the preliminary opening operation of the multi-foot support is more convenient and easy to operate.

[0265] Further, as shown in Figures 58 to 65 the movable member 522 and the support rod assembly 100 are in sliding cooperation along the rotation axis 501 of the preliminary opening member 500, and the movable member 522 and the support rod assembly 100 are in limiting cooperation in the circumferential direction around the rotation axis, and the movable member 522 and the preliminary opening member 500 are in screw cooperation to make the preliminary opening member 500 subjected to the first external force when the movable member 522 is subjected to a third external force.

[0266] For example, the third external force includes a force in the direction of the rotation axis, and the third external force is only a force in the direction of the rotation axis. In another example, the third external force is a force inclined relative to the rotation axis, and one component of the third external force is a force in the direction of the rotation axis. The movable member 522 is installed at the bottom end of the support rod assembly 100.

[0267] The circumferential limiting and sliding along the rotation axis of the movable element 522 and the support rod assembly 100 can be achieved by setting a sliding groove and a sliding rail matched with each other on the movable element 522 and the support rod assembly 100 respectively (or setting a sliding rail and a sliding groove matched with each other on the movable element 522 and the support rod assembly 100 respectively). The movable element 522 is screw matched with the preliminary opening element 500, and the movable element 522 can be a screw element, for example, a screw rod or a screw sleeve matched with the preliminary opening element 500. By screw matching the movable element 522 and the preliminary opening element 500, the linear motion of the movable element 522 is converted into the circumferential rotation motion of the preliminary opening element 500, and compared with other ways, the space and size of the support rod assembly 200 in the axial direction can be fully utilized, so that the structure between the movable element 522 and the preliminary opening element 500 is more compact.

[0268] Specifically, the screw matching between the movable element 522 and the preliminary opening element 500 can be achieved by setting the threads matched with each other on the movable element 522 and the preliminary opening element 500. For example, the threads set on the movable element 522 and the preliminary opening element 500 are rectangular threads or triangular threads, etc. For example, the movable element 522 is a threaded column, the preliminary opening element 500 is provided with a threaded hole for the threaded column to pass through, and the threaded column is screw matched in the threaded hole; for another example, the preliminary opening element 500 is provided with a threaded column, and the movable element 522 has a threaded hole screw matched with the threaded column. Specifically, the preliminary opening element 500 includes a matching part 525 and a touch plate, the touch plate is connected to one end of the rotating column, at least three corners of the touch plate form at least three touch parts 540, the matching part 525 is provided with a threaded hole, the matching part 525 is rotatably connected to the bottom end of the support rod assembly 100, the touch plate is located below the support rod assembly 100, the movable element 522 passes through the touch plate and is screw matched with the threaded hole.

[0269] For example, the touch plate is a polygonal structure, each touch part 540 is one corner of the polygonal structure, or at least three touch parts 540 correspond to at least three corners of the polygonal structure respectively. For another example, the shape and form of the touch part 520 can be various, for example, the touch part 520 can be a convex, a cam flange, etc.

[0270] For example, the number of the at least three touch parts 520 can correspond to the number of the at least three support leg assemblies 300, of course, the number of the touch parts 520 can be greater than the number of the support leg assemblies 300.

[0271] In an example, please refer to Figures 56 to 62The support rod assembly 100 comprises a support rod body 110 and a mounting piece 120 fixedly connected to the bottom end of the support rod body 110, the movable piece 522 is slidingly connected to the mounting piece 120 along the rotation axis 501, and the preliminary opening piece 500 is rotationally connected to the mounting piece 120. The mounting piece 120 and the support rod body 110 can be fixedly connected by means of screws, interference fitting, rivet connection, etc. By providing the mounting piece 120 for the connection of the preliminary opening piece 500 and the movable piece 522, the bottom end connection structure of the support rod assembly 100 can be independently formed, which facilitates the manufacturing of the support rod assembly and can reduce the manufacturing cost, and facilitates the assembly of the preliminary opening piece 500 and the support rod body 120. In addition, since the support rod body 110 mainly plays a supporting and guiding role, and the mounting piece 120 mainly plays a connecting role, the support rod body 110 and the mounting piece 120 can also be made of different materials, for example, the support rod body 110 is made of metal material to improve its structural strength and reduce the sliding friction with the sliding sleeve assembly 200, and the mounting piece 120 is made of plastic material to reduce the manufacturing cost of the mounting piece 120.

[0272] Further, as shown in Figures 56 to 59 The multi-legged support further comprises a force applying piece 526 fixedly connected to the movable piece 522, and the force applying piece 526 is provided with a force applying portion for applying a third external force.

[0273] For example, the force applying portion is the surface of the force applying piece, or the force applying portion is a part of the force applying piece.

[0274] In this embodiment, since the movable piece 522 is circumferentially limitedly matched relative to the support rod assembly 100 around the rotation axis 501, when the force applying portion is subjected to the third external force, the movable piece 522 is driven to slide and not to rotate, so as to drive the preliminary opening piece 500 to rotate. The relative position of the force applying piece 526 and the movable piece 522 can be set according to actual needs.

[0275] For example, the force applying piece 526 is fixedly connected to the bottom end of the movable piece 522, and the force applying piece is exposed at the bottom end of the at least three support leg assemblies 300 in the state that the at least three support leg assemblies 300 are folded into the support rod assembly 100, so that the user can press the force applying piece 526 more conveniently. In this example, the force applying portion 526 is the surface of the force applying piece, and the force applying portion 526 can be a plane, a circular arc surface, a spherical surface, etc., which is not limited here.

[0276] In another example, the force receiving part 526 is fixedly connected to the bottom end of the movable part 522, and when the at least three supporting leg assemblies 300 are in the folded position, the force receiving part protrudes from the bottom end of the at least three supporting leg assemblies 300. In this way, the force receiving part protrudes outward, and the user can make the force receiving part bear a force by only holding the multi-leg support and hitting the bottom end of the multi-leg support against an external object, so that the user can exert a third external force on the force receiving part by pressing or hitting the force receiving part, thereby meeting the user's demand for preliminary opening of the multi-leg support in different use scenarios. The force receiving part 526 protrudes from the bottom surface of the at least three supporting leg assemblies 300, which is more convenient for the user to hold the multi-leg support and directly or indirectly hit the bottom end of the movable part 522 of the supporting rod assembly 100 against an external object, so as to indirectly drive the preliminary opening part 500 to rotate and realize rotation of the preliminary opening part 500 from the preliminary position to the second position.

[0277] In some implementations, the preliminary opening part 500 is installed at the bottom end of the supporting rod assembly 100, and in the initial state, the force receiving part protrudes from the bottom end of the preliminary opening part 500. When the at least three supporting leg assemblies 300 are folded on the supporting rod assembly 100, the force receiving part 526 is accommodated in the space surrounded by the at least three supporting leg assemblies 300, and the force receiving part 526 does not protrude from the bottom end of the supporting leg assembly 300.

[0278] In this example, the multi-leg support occupies a small volume in the storage state, which is more convenient for storage and placement of the multi-leg support, and can also avoid that an object or a person outside the multi-leg support accidentally touches the force receiving part in the storage state, for example, causing the supporting leg assembly 300 to be preliminarily opened due to accidental touch of the force receiving part. For another example, in the storage state of the multi-leg support, the force receiving part 526 does not protrude from the bottom end of the supporting leg assembly 300, so that the user can more conveniently hold the bottom end of the at least three supporting leg assemblies, and the multi-leg support is more convenient to use.

[0279] In this example, the preliminary opening part 500 is installed at the bottom end of the supporting rod assembly 100, and in the initial state, the force receiving part protrudes from the bottom end of the preliminary opening part 500, so as to facilitate the user to press the movable part 522 and indirectly drive the preliminary opening part 500 to rotate, thereby realizing rotation of the preliminary opening part 500 from the preliminary position to the second position.

[0280] In this example, the user presses the force receiving part of the force receiving part 526, and the force receiving part 526 and the movable part 522 slide towards the sliding sleeve assembly. For example only, when the supporting rod assembly is vertically placed, the user presses the force receiving part of the force receiving part 526, and the force receiving part 526 and the movable part 522 slide upwards.

[0281] For the convenience of assembly, the force receiving member 526 is optionally provided separately from the movable member 522. The force receiving member 526 and the movable member 522 can be fixedly connected by means of screws, clamps or the like. The force receiving member 526 can also have various forms, such as a columnar structure, a hemispherical structure, etc., which are not specifically limited herein.

[0282] In some embodiments, referring to Figure 58 and Figure 59 , the multi-leg support further comprises an elastic member 527 configured to provide an elastic force to the movable member 522 to reset the movable member 522 so that the preliminary opening member 500 returns to the initial position after the third external force is removed.

[0283] The elastic member 527 can be a reset spring, such as a compression spring, a torsion spring, a conical spring, etc. The elastic member 527 can also be a rubber airbag, a rubber elastic member, etc., as long as it can provide an elastic force to reset the movable member 522. By providing the elastic member 527, the movable member 522 can be elastically reset after the third external force is removed, driving the preliminary opening member 500 to automatically return to the initial position, without the need for manual resetting of the preliminary opening member 500. This avoids the preliminary opening member 500 from interfering with the folding of the support leg assembly 300 relative to the support rod assembly 100, specifically, the actuating portion 540 of the preliminary opening member 500 from interfering with the folding of the support leg assembly 300 relative to the support rod assembly 100. It can be understood that the third external force needs to be greater than the elastic force exerted by the elastic member 527 on the movable member 522, so that the movable member 522 can slide relative to the support rod assembly 100.

[0284] Further, as shown in Figures 58-60 , Figures 63-65 , the preliminary opening member 500 further comprises a matching portion 525, the at least three actuating portions 540 being connected to the matching portion 525, the matching portion 525 being rotationally connected to the bottom end of the support rod assembly 100, and the movable member 522 being screw-connected with the matching portion 525; the elastic member 527 is a reset spring, the reset spring being sleeved around the movable member 522 and clamped between the force receiving member 526 and the matching portion 525.

[0285] In the present embodiment, the reset spring is sleeved around the movable member 522 and clamped between the force receiving member 526 and the matching portion 525, making the multi-leg support structure more compact and occupying less space.

[0286] In the embodiment, the fitting part 525 can be a cylindrical, stepped cylindrical or columnar structure. The at least three touching parts 540 can be protruding corners or protrusions of the outer peripheral wall of the fitting part 525. In some embodiments, the fitting part 525 and the at least three touching parts 540 are integrally formed. In order to ensure the rotation reliability of the fitting part 525 and the support rod assembly 100, the lower end of the support rod assembly 100 is provided with a mounting cavity, and the fitting part 525 is rotatably arranged in the mounting cavity. In the embodiment in which the support rod assembly 100 is provided with the mounting member 120, the mounting cavity is arranged on the mounting member 120, and the fitting part 525 is rotatably arranged on the mounting member 120.

[0287] Specifically, the elastic member 527 is clamped between the force applying member 526 and the fitting part 525, and the elastic restoring direction of the elastic member 527 is arranged along the extension direction of the rotation axis 501. The elastic member 527 is a reset spring, which is elastic, low in cost and easy to install. The reset spring can be clamped between the force applying member 526 and the fitting part 525, for example, a recess is arranged on the force applying member 526, and an abutting wall is arranged in the inner cavity of the fitting part 525, so that one end of the reset spring is embedded in the recess of the force applying member 526, and the other end abuts against the abutting wall of the fitting part 525. In this way, the structure between the force applying member 526, the movable member 522, the preliminary opening member 500 and the bottom end (the mounting member 120) of the support rod assembly 100 is more compact, and the occupied volume is smaller.

[0288] In other implementations, the movable member 522 is directly or indirectly subjected to a fourth external force to reset it, for example, the user directly or indirectly pulls the movable member 522 to reset it. In other implementations, the movable member 522 is reset by its own weight, or the movable member 522 and the force applying member 526 are reset by their own weights.

[0289] Further, please refer to Figure 58 , Figure 59 , Figure 61 , Figure 65 The movable member 522 comprises a guide part 523 which extends out of the top end of the preliminary opening member 500 and is slidably connected to the support rod assembly 100. The guide part 523 and one of the support rod assembly 100 are provided with a guide groove 528, and the other is provided with a protrusion 529 which is slidably connected to the guide groove 528.

[0290] In the embodiment, the guide portion 523 extends out of and exposes the top end surface of the preliminary opening member, and is in sliding connection with the bottom end of the support rod assembly 100. A protrusion 529 can be provided on the outer circumferential wall of the guide portion 523, a guide groove 528 can be provided on the bottom end of the support rod assembly 100, or a guide groove 528 can be provided on the outer circumferential wall of the guide portion 523, and a protrusion 529 can be provided on the inner wall of the bottom end of the support rod assembly 100. The sliding cooperation of the protrusion 529 and the guide groove 528 enables the movable member 522 to slide up and down and circumferentially limit with the support rod assembly 100, i.e., the movable member 522 can only slide up and down relative to the support rod assembly 100 and cannot rotate, and thus can drive the preliminary opening member to circumferentially rotate when the movable member 522 slides up and down. The form and number of the protrusion 529 are not limited, for example, the protrusion 529 can be in the form of a long strip or a rectangular block. In order to ensure the stability of the guide, for example, at least two protrusions 529 are provided and the plurality of protrusions 529 are spaced apart circumferentially around the guide portion 523.

[0291] In some implementations, when the at least three support leg assemblies 300 are unfolded relative to the support rod assembly 100, the user holding and lifting the sliding sleeve assembly 200 can enable the at least three support leg assemblies 300 to be folded relative to the support rod assembly 100.

[0292] It can be understood that the user holding and lifting the sliding sleeve assembly 200 enables the support leg assemblies 300 of the multi-leg support to be folded, thereby facilitating the use of the multi-leg support, and in the process of folding the support leg assemblies 300, the magnetic attraction member 320 can also facilitate the folding of the at least three support leg assemblies 300, thereby further facilitating the use of the multi-leg support.

[0293] For example, in the process of the user lifting the sliding sleeve assembly 200, the multi-leg support is suspended or contacts the support surface.

[0294] For example, the user holding and lifting the main barrel 220 of the sliding sleeve assembly 200 can enable the at least three support leg assemblies 300 to be folded relative to the support rod assembly 100.

[0295] In some implementations, when the at least three support leg assemblies 300 are folded relative to the support rod assembly 100, the support leg assemblies 300 are magnetically attracted to the connecting rods 400; in the process of the user holding and lifting the sliding sleeve assembly 200 to enable the at least three support leg assemblies 300 to be folded relative to the support rod assembly 100, the magnetic attraction member 320 magnetically attracts the corresponding connecting rod to facilitate the folding of the at least three support leg assemblies relative to the support rod assembly.

[0296] In some implementations, during the process that the user holds the sliding sleeve assembly 200 and lifts the sliding sleeve assembly 200 so that the at least three support leg assemblies 300 are retracted relative to the support rod assembly 100, the self-weight effect of the support rod assembly 100 and the self-weight effect of the support leg assemblies 300 facilitate the retraction of the at least three support leg assemblies 300 to the support rod assembly 100.

[0297] For example, during the process that the user holds the sliding sleeve assembly 200 and lifts the sliding sleeve assembly 200 so that the at least three support leg assemblies 300 are retracted relative to the support rod assembly 100, the self-weight effect of the connecting arm 710, the self-weight effect of the supporting member 720, and the self-weight effect of the electronic terminal facilitate the retraction of the at least three support leg assemblies 300 to the support rod assembly 100.

[0298] In some implementations, during the process that the user holds the sliding sleeve assembly 200 and lifts the sliding sleeve assembly 200 so that the at least three support leg assemblies 300 are retracted relative to the support rod assembly 100, the inertia effect of the support rod assembly 100 and the inertia effect of the support leg assemblies 300 facilitate the retraction of the at least three support leg assemblies 300 to the support rod assembly 100.

[0299] It can be understood that inertia refers to the property of an object to remain at rest or in uniform straight line motion, and the inertia effect of an object refers to the effect brought by the inertia of the object.

[0300] For example, during the process that the user holds the sliding sleeve assembly 200 and lifts the multi-leg support so that the at least three support leg assemblies 300 are retracted relative to the support rod assembly 100, the speed of the sliding sleeve assembly 200 changes, the support leg assemblies 300 and the support rod assembly 100 remain at the original speed, and the inertia effect of the support leg assemblies 300 and the support rod assembly facilitates the retraction of the at least three support leg assemblies 300 to the support rod assembly 100. Specifically, during the process that the user holds the sliding sleeve assembly and lifts the multi-leg support so that the at least three support leg assemblies are retracted relative to the support rod assembly 100, the sliding sleeve assembly 200 changes from being at rest to having a certain speed, the support leg assemblies 100 and the support rod assembly 200 remain at rest, and the inertia effect of the support leg assemblies 100 and the support rod assembly 200 facilitates the retraction of the at least three support leg assemblies to the support rod assembly.

[0301] For example, during the process that the user holds the sliding sleeve assembly 200 and lifts the sliding sleeve assembly 200 so that the at least three support leg assemblies 300 are folded relative to the support rod assembly 100, the inertial effect of the connecting arm 710, the inertial effect of the supporting member 720 and the inertial effect of the electronic terminal promote the folding of the at least three support leg assemblies 300 to the support rod assembly 100. Specifically, during the process that the user holds the sliding sleeve assembly and lifts the multi-leg support so that the at least three support leg assemblies 300 are folded relative to the support rod assembly 100, the sliding sleeve assembly 200 has a certain speed from static, and the connecting arm 710, the supporting member 720 and the electronic terminal remain static, and the connecting arm 710, the supporting member 720 and the electronic terminal promote the folding of the at least three support leg assemblies to the support rod assembly 100.

[0302] It can be understood that the "bottom", "top" should be understood according to the common use state of the multi-leg support, and the common use state of the multi-leg support is that the multi-leg support is supported on a support plane, the bottom end of a component refers to the end close to the support plane, the top end of a component refers to the end away from the support plane, the bottom surface of a component refers to the surface close to the support plane, and the top surface of a component refers to the surface away from the support plane.

[0303] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the embodiments are not described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0304] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A movable support leg structure, said movable support leg structure being part of a multi-leg bracket, characterized in that, The movable support foot structure includes a support rod assembly, a sliding sleeve assembly, a support foot assembly, a connecting rod, and a preliminary opening component. The sliding sleeve assembly is slidably fitted onto the support rod assembly along the length direction of the support rod assembly. The support foot assembly is rotatably connected to the sliding sleeve assembly; One end of the connecting rod is rotatably connected to the support rod assembly, and the other end is rotatably connected to the support foot assembly. The support foot assembly can be opened or closed relative to the support rod assembly. In the initial state, the support foot assembly is kept in the closed state relative to the support rod assembly. In the open state relative to the support rod assembly, the support foot assembly can be supported on a support surface. Applying an external force to the preliminary opening member can cause the preliminary opening member to rotate relative to the support rod assembly. The preliminary opening member has an actuating portion that corresponds to the support foot assembly. During the process of the initial opening member rotating from the initial position to the second position, the actuating part actuates the corresponding support foot assembly to cause the support foot assembly to retract relative to the support rod assembly, thus changing the initial opening of the support foot assembly relative to the support rod assembly.

2. The movable support leg structure according to claim 1, characterized in that, The initial opening member can also translate relative to the support rod assembly in a first direction. During the application of the external force to the initial opening member, the initial opening member translates relative to the support rod assembly in the first direction and rotates relative to the support rod assembly. The external action includes a force acting on the initial opening member along the first direction, and / or, the external action includes a rotational torque acting on the initial opening member about its axis of rotation.

3. The movable support leg structure according to claim 1, characterized in that, The initial opening component is provided with a first thread, and the support rod assembly is provided with a second thread. The first thread and the second thread are engaged, and the rotation axis of the initial opening component is coaxial with the central axis of the first thread. During the application of an external force to the preliminary opening member, the preliminary opening member rotates relative to the support rod assembly about the rotation axis, and the preliminary opening member translates relative to the support rod assembly along a first direction, which is along the rotation axis; The external action includes a force acting on the initial opening member along the axis of rotation, and / or, the external action includes a rotational torque acting on the initial opening member about the axis of rotation.

4. The movable support leg structure according to claim 3, characterized in that, The multi-leg bracket also includes a return spring, which acts on the initial opening member and causes the initial opening member to return from the second position to the initial position.

5. The movable support leg structure according to claim 4, characterized in that, The initial opening component has a mounting post, a first thread is provided on the mounting post, the support rod assembly has a mounting cavity, the mounting post is installed in the mounting cavity, a second thread is provided on the cavity wall of the mounting cavity, the mounting post has an accommodating cavity, and the actuating parts are all connected to the mounting post; The mounting post has a first end face, the accommodating cavity communicates with the first end face, the mounting post has a first abutting wall located in the mounting cavity, and the support rod assembly has a second abutting wall located in the accommodating cavity; The reset spring is a columnar spring or a tower-shaped spring. The first end of the reset spring is housed in the receiving cavity. The first end of the reset spring abuts against the first abutting wall, and the second end abuts against the second abutting wall. During the process of the initial opening member rotating from the initial position to the second position, the mounting post moves toward the second abutment wall, and the return spring is compressed; When the initial opening member is in the second position, the first end face abuts against the second abutting wall, and the return spring is housed in the receiving cavity.

6. The movable support leg structure according to claim 5, characterized in that, The initial opening component further includes a connecting post, which is connected to the mounting post. One end of the connecting post is accommodated in the accommodating cavity, and the return spring is sleeved on the connecting post. The support rod assembly has a retaining part with a through hole through which the connecting column passes, and the retaining part is provided with a second abutting wall; The multi-leg bracket also includes a first fastener, which is fastened to the connecting post. The first head of the first fastener and the mounting post of the initial opening member are located on opposite sides of the blocking part. During the process of the initial opening member returning from the second position to the initial position, the return spring acts on the initial opening member, and the first head of the first fastener moves toward the blocking part; With the initial opening member in the initial position, the first head of the first fastener abuts against the retaining portion.

7. The movable support leg structure according to claim 5, characterized in that, The support rod assembly includes a support rod body and a mounting component. The mounting component is mounted on the support rod body, and each connecting rod is rotatably connected to the mounting component. The mounting cavity is located in the mounting member, and the mounting member has a second abutment wall.

8. The movable support leg structure according to claim 7, characterized in that, The initial opening component further includes a connecting post connected to the mounting post, one end of the connecting post being accommodated in the accommodating cavity, and the return spring being sleeved on the connecting post; the mounting component has a retaining portion with a through hole through which the connecting post passes, and the retaining portion having a second abutting wall; the multi-leg bracket further includes a first fastener, which is fastened to the connecting post, and the first head of the first fastener and the mounting post of the initial opening component are located on opposite sides of the retaining portion; During the process of the initial opening member returning from the second position to the initial position, the return spring acts on the initial opening member, and the first head of the first fastener moves toward the blocking part; When the initial opening member is in the initial position, the first head of the first fastener abuts against the retaining portion.

9. The movable support leg structure according to claim 7, characterized in that, The mounting component is installed at the bottom end of the support rod body. When the support foot assembly is opened to its maximum opening relative to the sliding sleeve assembly, the sliding sleeve assembly abuts against the mounting component. The mounting component includes a mounting portion and a mounting protrusion connected to the mounting portion. Each connecting rod is rotatably connected to the mounting protrusion of the mounting component, and the mounting cavity communicates with the mounting portion. The support rod body has a mounting hole that extends to its bottom end, and the mounting part is inserted into the mounting hole. The support rod assembly also includes a second fastener, which passes through the support rod body and is fastened to the mounting part. The sliding sleeve assembly has a sliding cavity that is slidably adapted to the support rod assembly, and a sliding strip is protruding from the inner wall of the sliding cavity, the sliding strip extending along the sliding direction of the sliding cavity; The outer wall of the support rod body is recessed with a sliding groove, which is adapted to the sliding strip. During the sliding process of the sliding sleeve assembly along the extension direction of the support rod assembly, the sliding strip slides in the sliding groove. The second fastener includes a second head and a second rod portion connected to the second head. The second head is accommodated in the sliding groove, and the second rod portion passes through the support rod body and is fastened to the mounting portion. When the sliding sleeve assembly is in contact with the support rod assembly, the second head is accommodated in the sliding cavity, and the second head is located between the bottom end of the sliding strip and the bottom end of the sliding sleeve assembly.

10. The movable support leg structure according to claim 1, characterized in that, When the support leg assembly is retracted into the support rod assembly, the support leg assembly is subjected to a retracting force that keeps it retracted into the support rod assembly. During the process of the support foot assembly retracting relative to the support rod assembly and the support foot assembly initially opening relative to the support rod assembly, the retraction force weakens or becomes 0.

11. The movable support leg structure according to claim 1, characterized in that, When the support leg assembly is folded into the support rod assembly, the support leg assembly and the connecting rod are magnetically attracted to each other. During the process of the support foot assembly retracting relative to the support rod assembly and then initially opening relative to the support rod assembly, the attractive force of the connecting rod on the support foot assembly weakens or becomes zero.

12. The movable support leg structure according to claim 1, characterized in that, The multi-legged stand is used to support electronic terminals or shooting aids.

13. The movable support leg structure according to claim 1, characterized in that, During the process of the support foot assembly retracting relative to the support rod assembly and the support foot assembly initially opening relative to the support rod assembly, the sliding sleeve assembly slides along the second direction; When the support foot assembly is initially opened relative to the support rod assembly and the second direction is along the direction of gravity, the self-weight of the moving assembly causes at least three of the support foot assemblies to open relative to the support rod assembly. The moving assembly includes the sliding sleeve assembly, at least three of the support foot assemblies, and at least three of the connecting rods.

14. A movable support leg structure, said movable support leg structure being part of a multi-leg bracket, characterized in that, The movable support foot structure includes a support rod assembly, a sliding sleeve assembly, a support foot assembly, a connecting rod, and a preliminary opening component. The sliding sleeve assembly is slidably fitted onto the support rod assembly along the length direction of the support rod assembly. The support foot assembly is rotatably connected to the sliding sleeve assembly; One end of the connecting rod is rotatably connected to the support rod assembly, and the other end is rotatably connected to the support foot assembly. The support foot assembly can be opened or closed relative to the support rod assembly. In the initial state, the support foot assembly is kept in the closed state relative to the support rod assembly. In the open state relative to the support rod assembly, the support foot assembly can be supported on a support surface. Applying an external force to the preliminary opening member can cause the preliminary opening member to translate relative to the support rod assembly in a first direction. The preliminary opening member has a push-off portion that corresponds to the support foot assembly. During the process of the initial opening member rotating from the initial position to the third position, the push part actuates the corresponding support foot assembly to cause the support foot assembly to retract relative to the support rod assembly, thus changing the initial opening of the support foot assembly relative to the support rod assembly.

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