Support leg movable structure, multi-leg support and use method therefor, and terminal support device

Abstract

A multi-leg support, relating to the technical field of assistive articles of electronic terminals. The multi-leg support comprises a support rod assembly (100), a sliding sleeve assembly (200), support leg assemblies (300), connecting rods (400), and a preliminarily unfolding member (500). When the support leg assemblies (300) are in an unfolded state relative to the support rod assembly (100), the support leg assemblies (300) can be supported on a support surface. Applying a first external action to the preliminarily unfolding member (500) can cause the preliminarily unfolding member (500) to rotate relative to the support rod assembly (100), the preliminarily unfolding member (500) has triggering portions (540), and during the process of the preliminarily unfolding member (500) rotating from an initial position to a second position, the triggering portions (540) trigger the corresponding support leg assemblies(300) so that folding of the support leg assemblies (300) relative to the support rod assembly (100) changes into preliminary unfolding of the support leg assemblies (300) relative to the support rod assembly (100), so as to facilitate unfolding of the support leg assemblies (300) relative to the support rod assembly (100), thereby facilitating use of the multi-leg support. Also provided are a support leg movable structure, a terminal support device, and a method for using the multi-leg support.

Description

Foot movement structure, multi-foot stand, and method of using the same, terminal support device

[0001] Cross-reference of related applications

[0002] This application claims priority to and the benefit of the following patent applications:

[0003] Chinese Patent Application No. 2025110067379, entitled "A multi-foot stand", filed on July 21, 2025; Chinese Patent Application No. 2025109606617, entitled "A multi-foot stand and an electronic terminal support device", filed on July 11, 2025; Chinese Patent Application No. 2024112802562, entitled "A multi-foot stand and an electronic terminal support device", filed on September 12, 2024; Chinese Patent Application No. 2024110645088, entitled "A multi-foot stand, an electronic terminal support device, and a method of using the multi-foot stand", filed on August 5, 2024; Chinese Patent Application No. 2024110663245, entitled "A support foot movement structure", filed on August 5, 2024; and the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0004] The present application relates to the technical field of auxiliary devices for electronic terminals or shooting aids, and in particular, to a multi-foot stand and a terminal support device. BACKGROUND

[0005] The stand is mainly used for placing and supporting electronic terminals such as tablet computers and mobile phones, facilitating shooting. The stand is also used for supporting shooting aids. The stands on the market vary in materials and functions. For example, a multi-foot stand appears on the market. The multiple support feet of the multi-foot stand can adjust the opening degree thereof.

[0006] The multi-foot stand in the prior art generally comprises a support rod assembly and at least three support foot assemblies. The at least three support foot assemblies can be opened or folded relative to the support rod assembly. In the state that the at least three support foot assemblies can be opened relative to the support rod assembly, the at least three support foot assemblies can be supported on a support surface. In the folded state, the support foot assemblies are folded relative to the support rod assembly. In the existing multi-foot stand, the support foot assemblies are not easy to change from the folded state to the opened state. SUMMARY

[0007] One of the purposes of the present application is to provide a multi-foot stand to solve the problem that the support foot assemblies of the existing multi-foot stand are not easy to change from the folded state to the opened state.

[0008] To solve the above problems, the embodiment of the present application provides a multi-leg support, which comprises a support rod assembly, a sliding sleeve assembly, at least three support leg assemblies, at least three connecting rods 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 at least three support leg assemblies are respectively rotationally connected to the sliding sleeve assembly; the at least three connecting rods correspond to the at least three support leg assemblies respectively, one end of the connecting rod is rotationally connected to the support rod assembly, and the other end is rotationally connected to the corresponding support leg assembly; the at least three support leg assemblies can be spread or folded relative to the support rod assembly; in the initial state, the at least three support leg assemblies are kept in the state of being folded on the support rod assembly; in the state that the at least three support leg assemblies are spread relative to the support rod assembly, the at least three support leg assemblies can be supported on a support surface; a first external action is applied to the preliminary opening piece, so that the preliminary opening piece rotates relative to the support rod assembly; the preliminary opening piece has at least three triggering parts, and the at least three triggering parts correspond to the at least three support leg assemblies respectively; in the process that the preliminary opening piece rotates from the initial position to the second position, the triggering part triggers the corresponding support leg assembly, so that the at least three support leg assemblies are folded relative to the support rod assembly and become the at least three support leg assemblies which are preliminarily opened relative to the support rod assembly, so as to facilitate the at least three support leg assemblies to be spread relative to the support rod assembly.

[0009] Compared with the prior art, the multi-leg support has the beneficial effects that the preliminary opening piece is installed on the support rod assembly, the preliminary opening piece rotates relative to the support rod assembly to preliminarily open the at least three support leg assemblies relative to the support rod assembly, so that the at least three support leg assemblies are easily spread relative to the support rod assembly, and the use of the multi-leg support is facilitated.

[0010] The embodiment of the present application also provides a multi-leg support, which comprises a support rod assembly, a sliding sleeve assembly, at least three support leg assemblies, at least three connecting rods and a preliminary opening device, the sliding sleeve assembly is sleeved on the support rod assembly along the length direction of the support rod assembly; the at least three support leg assemblies are respectively rotationally connected to the sliding sleeve assembly; the at least three connecting rods correspond to the at least three support leg assemblies respectively, one end of the connecting rod is rotationally connected to the support rod assembly, and the other end is rotationally connected to the corresponding support leg assembly; the at least three support leg assemblies can be spread or folded relative to the support rod assembly; in the initial state, the at least three support leg assemblies are kept in the state of being folded on the support rod assembly; in the state that the at least three support leg assemblies are spread relative to the support rod assembly, the at least three support leg assemblies can be supported on a support surface; the preliminary opening device is slidingly installed on the support rod assembly, and a second external action applied to the preliminary opening device can make the preliminary opening device translate in a first direction relative to the support rod assembly; the preliminary opening device has at least three pushing parts, and the at least three pushing parts correspond to the at least three support leg assemblies respectively; in the process that the preliminary opening device translates from the initial position to a third position, the pushing part pushes the corresponding support leg assembly to make the at least three support leg assemblies fold relative to the support rod assembly to the state that the at least three support leg assemblies are preliminarily opened relative to the support rod assembly.

[0011] Compared with the prior art, the multi-leg support has the beneficial effects that the at least three support leg assemblies are preliminarily opened relative to the support rod assembly, so that the at least three support leg assemblies are easily spread relative to the support rod assembly, and the use of the multi-leg support is facilitated.

[0012] The embodiment of the present application also provides a terminal support device, which comprises a supporting part and the multi-leg support, the supporting part is used for supporting an electronic terminal, and the supporting part is installed on the support rod assembly of the multi-leg support.

[0013] Compared with the prior art, the terminal support device has the beneficial effects that the at least three support leg assemblies of the terminal support device are preliminarily opened relative to the support rod assembly, so that the at least three support leg assemblies are easily spread relative to the support rod assembly, and the use of the terminal support device is facilitated.

[0014] The application also provides a support leg movable structure as 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 member, 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 member can make the preliminary opening member translate along a first direction relative to the support rod assembly, the preliminary opening member has a touch-push part corresponding to the support leg assembly; in the process that the preliminary opening member is rotated from the initial position to a third position, the touch-push 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.

[0015] Compared with the prior art, the support leg movable structure has the beneficial effect that the support leg assembly of the terminal support device of the embodiment of the application 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, thereby facilitating the use of the terminal support device.

[0016] The application also provides a support leg movable structure as 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 member, 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 member can make the preliminary opening member translate along a first direction relative to the support rod assembly, the preliminary opening member has a touch-push part corresponding to the support leg assembly; in the process that the preliminary opening member is rotated from the initial position to a third position, the touch-push 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.

[0017] Compared with the prior art, the beneficial effect of the movable structure of the support foot of the present application is that the support foot assembly of the terminal support device of the embodiment of the present application is preliminarily opened relative to the support rod assembly, so that the support foot assembly is easily spread relative to the support rod assembly, thereby facilitating the use of the terminal support device.

[0018] The present application also provides a use method of the multi-foot support, and the use method has the beneficial effect that the at least three support foot assemblies are preliminarily opened relative to the support rod assembly, so that the at least three support foot assemblies are easily spread relative to the support rod assembly, thereby facilitating the use of the multi-foot support. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.

[0020] Fig. 1 is a structural schematic view of the multi-foot support of the embodiment of the present application, in which the three support foot assemblies of the multi-foot support are in a folded state relative to the support rod assembly;

[0021] Fig. 2 is a structural schematic view of another view of the multi-foot support shown in Fig. 1;

[0022] Fig. 3 is an enlarged view of the structure at A in the multi-foot support shown in Fig. 2;

[0023] Fig. 4 is a front view of the multi-foot support shown in Fig. 1 in a certain direction;

[0024] Fig. 5 is a sectional view of the multi-foot support shown in Fig. 4 along line I-I;

[0025] Fig. 6 is an enlarged view of the structure at B in the structure shown in Fig. 5;

[0026] Fig. 7 is a structural schematic view of a preliminary opening piece in the multi-foot support shown in Fig. 2;

[0027] Fig. 8 is a structural schematic view of another view of the preliminary opening piece shown in Fig. 7;

[0028] Fig. 9 is a structural schematic view of a mounting piece in the structure shown in Fig. 6;

[0029] Fig. 10 is a structural schematic view of another view of the mounting piece shown in Fig. 9;

[0030] Fig. 11 is an exploded schematic view of the mounting piece, the preliminary opening piece, the reset spring and other structures in the structure shown in Fig. 6;

[0031] Fig. 12 is an exploded schematic view of the structure shown in Fig. 11 from another perspective;

[0032] Fig. 13 is a schematic view of the multi-leg support shown in Fig. 1 when the three support leg assemblies are in a preliminary opening relative to the support bar assembly, in which the preliminary opening member is in a second position;

[0033] Fig. 14 is a schematic view of the multi-leg support shown in Fig. 13 from another perspective;

[0034] Fig. 15 is an enlarged view of the structure at C in the multi-leg support shown in Fig. 14;

[0035] Fig. 16 is an elevational view of the multi-leg support shown in Fig. 13 in a certain direction;

[0036] Fig. 17 is a sectional view of the multi-leg support shown in Fig. 16 along line II-II;

[0037] Fig. 18 is an enlarged view of the structure at D in the multi-leg support shown in Fig. 17;

[0038] Fig. 19 is a schematic view of the multi-leg support shown in Fig. 1 when the three support leg assemblies are in an opening relative to the support bar assembly;

[0039] Fig. 20 is a sectional view of the multi-leg support shown in Fig. 19 along line III-III;

[0040] Fig. 21 is an enlarged view of the structure at E in the multi-leg support shown in Fig. 20;

[0041] Fig. 22 is a schematic view of the sliding sleeve assembly in the multi-leg support shown in Fig. 19;

[0042] Fig. 23 is a schematic view of the support leg assembly in the multi-leg support shown in Fig. 19;

[0043] Fig. 24 is an enlarged view of the structure at F in the support leg assembly shown in Fig. 23;

[0044] Fig. 25 is an enlarged view of the structure at G in the support leg assembly shown in Fig. 23;

[0045] Fig. 26 is an enlarged view of the structure at H in the support leg assembly shown in Fig. 23;

[0046] Fig. 27 is a schematic view of the connecting rod in the multi-leg support shown in Fig. 19;

[0047] Fig. 28 is a schematic view of the terminal support device according to an embodiment of the present application;

[0048] Fig. 29 is a schematic view of another embodiment of the multi-leg support according to the present application, in which the three support leg assemblies of the multi-leg support are in a retracted state relative to the support bar assembly;

[0049] Fig. 30 is an enlarged view of the structure at A in the multi-leg support shown in Fig. 29;

[0050] Fig. 31 is an elevational view of the multi-leg support shown in Fig. 29 in a certain direction;

[0051] Fig. 32 is a partial sectional view of the multi-leg support shown in Fig. 31 along the line B-B;

[0052] Fig. 33 is an enlarged view of the structure at C in the multi-leg support shown in Fig. 32;

[0053] Fig. 34 is a schematic view of the cooperation of the preliminary opening member, the mounting member, etc. in the multi-leg support shown in Fig. 29;

[0054] Fig. 35 is a schematic view of the structure shown in Fig. 34 in another perspective;

[0055] Fig. 36 is a schematic view of the structure of the mounting member in the structure shown in Fig. 34;

[0056] Fig. 37 is a schematic view of the cooperation of the preliminary opening member and the return spring in the structure shown in Fig. 34;

[0057] Fig. 38 is a schematic view of the multi-leg support shown in Fig. 29 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 third position;

[0058] Fig. 39 is an enlarged view of the structure at D in the multi-leg support shown in Fig. 38;

[0059] Fig. 40 is an elevational view of the multi-leg support shown in Fig. 38 in a certain direction;

[0060] Fig. 41 is a partial sectional view of the multi-leg support shown in Fig. 40 along the line E-E;

[0061] Fig. 42 is an enlarged view of the structure at F in the structure shown in Fig. 41;

[0062] Fig. 43 is a schematic view of the multi-leg support shown in Fig. 29 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;

[0063] Fig. 44 is an enlarged view of the structure at G in the multi-leg support shown in Fig. 43;

[0064] Fig. 45 is an elevational view of the multi-leg support shown in Fig. 44 in a certain direction;

[0065] Fig. 46 is a partial sectional view of the multi-leg support shown in Fig. 45 along the line H-H;

[0066] Fig. 47 is an enlarged view of the structure at I in the multi-leg support shown in Fig. 46;

[0067] Figure 48 is a schematic view of the multi-legged support shown in Figure 29 with the three support leg assemblies spread apart relative to the support pole assembly;

[0068] Figure 49 is a sectional partial view of the multi-legged support shown in Figure 48 taken along line J-J;

[0069] Figure 50 is an enlarged view of the structure at K in the structure shown in Figure 49;

[0070] Figure 51 is a schematic view of the structure of a support leg assembly in the multi-legged support shown in Figure 29;

[0071] Figure 52 is an enlarged view of the structure at L in the support leg assembly shown in Figure 51;

[0072] Figure 53 is an enlarged view of the structure at M in the support leg assembly shown in Figure 51;

[0073] Figure 54 is a schematic view of the structure of a connecting rod in the multi-legged support shown in Figure 48;

[0074] Figure 55 is a schematic view of the structure of a sliding sleeve assembly in the multi-legged support shown in Figure 48;

[0075] Figure 56 is an assembly view of a mounting member and a preliminary opening member in another embodiment of the multi-legged support of the present application;

[0076] Figure 57 is a top view of the structure shown in Figure 56;

[0077] Figure 58 is a sectional view taken along line IV-IV in Figure 57;

[0078] Figure 59 is an exploded view of the structure shown in Figure 56;

[0079] Figure 60 is a schematic view of the structure of the preliminary opening member shown in Figure 56;

[0080] Figure 61 is a schematic view of the structure of the mounting member shown in Figure 56;

[0081] Figure 62 is a schematic view of the structure of the mounting member shown in Figure 61 from another angle;

[0082] Figure 63 is a schematic view of the structure of the preliminary opening member shown in Figure 60;

[0083] Figure 64 is a schematic view of the preliminary opening member shown in Figure 63 from another angle;

[0084] Figure 65 is a schematic view of the structure of a movable member of the preliminary opening member shown in Figure 60;

[0085] Figure 66 is a schematic view of another embodiment of the multi-legged support of the present application in which the three support leg assemblies of the multi-legged support are in a collapsed state relative to the support pole assembly;

[0086] Fig. 67 is a structural schematic view of another embodiment of the multi-legged support of the present application, in which the four support leg assemblies of the multi-legged support are in a retracted state relative to the support rod assembly;

[0087] Fig. 68 is a cross-sectional view of an angle of the multi-legged support of Fig. 67;

[0088] Fig. 69 is an enlarged view of the structure at N of the support leg assembly shown in Fig. 68.

[0089] The first group of reference numerals: support rod assembly 100, support rod body 110, first outer peripheral wall 111, mounting member 120, first mounting sub-member 120a, second mounting sub-member 120b, abutting table 1211, second screw 121, blocking portion 122, second clamping portion 122a, partition protrusion 122b, mounting portion 123, mounting protrusion 124, third fastener 125, second fastener 130, second head 131, second rod portion 132, mounting cavity 101, second abutting wall 102, through hole 103, mounting hole 104, sliding groove 105, third rotating portion 106, sliding sleeve assembly 200, sliding bar 210, main cylinder 220, avoiding notch 221, positioning cylinder 230, sliding cavity 201, first rotating portion 202, support leg assembly 300, first outer peripheral surface 3111, anti-pinch groove 3112, positioning slot 3113, positioning protrusion 3114, support leg body 310, second rotating portion 311, clamping groove 312, first mounting opening 313, magnetic attraction member 320, non-slip pad 330, fifth rotating portion 301, contact surface 302, connecting rod 400, fourth rotating portion 410, sixth rotating portion 420, preliminary opening member 500, first screw 510, mounting column 520, movable member 522, guide portion 523, matching portion 525, force member 526, elastic member 527, guide slot 528, protruding block 529, connecting column 530, touching portion 540, adjusting piece 550, pressure applying portion 560, pushing portion 570, blocking member 580, first clamping portion 581, first side portion 581a, fourth fastener 590, rotating axis 501, accommodating cavity 502, first abutting wall 503, first end surface 504, force applying space 505, return spring 610, first fastener 620, first head 621, bearing member 720, connecting arm 710. DETAILED DESCRIPTION

[0090] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings of 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 drawings herein can be arranged and designed in various different configurations.

[0091] The following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application as claimed, but merely represents selected embodiments of the application. Based upon the embodiments of the application, all other embodiments that a person of ordinary skill in the art obtains without creative work, are within the scope of protection of the application.

[0092] The embodiment of the application provides a multi-leg support. Referring to FIGS. 1-27, or referring to FIGS. 29-55, or referring to FIGS. 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 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, and the other end is rotationally connected to the corresponding support leg assembly 300. 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. When the at least three support leg assemblies 300 are in the state of being opened 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 piece 500 can make the preliminary opening piece 500 rotate relative to the support rod assembly 100. The preliminary opening piece 500 has at least three triggering parts 540, which correspond to the at least three support leg assemblies 300 respectively. In the process that the preliminary opening piece 500 rotates from the initial position to the second position, the triggering part 540 triggers the corresponding support leg assembly 300 to make the at least three support leg assemblies 300 fold relative to the support rod assembly 100 to the state that the at least three support leg assemblies 300 are preliminarily opened relative to the support rod assembly 100, so as to facilitate the at least three support leg assemblies 300 to be opened relative to the support rod assembly 100. Understandably, the rotation of the preliminary opening piece 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 opened relative to the support rod assembly 100, and the use of the multi-leg support is facilitated.

[0093] It can be understood that the process of the actuating portion 540 actuating the corresponding support leg assembly 300 to make the at least three support leg assemblies 300 relative to the support rod assembly 100 from being folded to being initially unfolded, that is, the actuating portion 540 rotates relative to the support rod assembly 100 and pushes the corresponding support leg assembly 300 to make the at least three support leg assemblies 300 relative to the support rod assembly 100 from being folded to being initially unfolded.

[0094] For example, the multi-leg support of the embodiment of the present application can be used to support 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.

[0095] For example, the support rod assembly 100 can be telescopic in the length direction to meet the different support height requirements of users, improve the universality of the product, or the support rod assembly 100 has a fixed length. For example, the support rod assembly 100 includes a plurality of telescopic sections, and the first telescopic section is included in the plurality of telescopic sections. The sliding sleeve assembly 200 is sleeved on the first telescopic section. The number of support leg assemblies 300 can be three, four, etc. The number of connecting rods 400 can be three, four, etc. The number of connecting rods 400 is the same as the number of support leg assemblies 300. During the process of the at least three support leg assemblies relative to the support rod assembly 100 being unfolded or folded, the sliding sleeve assembly 200, the support rod assembly 100, the support leg assembly 300, and the connecting rod 400 are linked. The sliding sleeve assembly 200, the support rod assembly 100, the support leg assembly 300, and the corresponding connecting rod 400 constitute a planar four-bar linkage mechanism. Specifically, the planar four-bar linkage mechanism can be a crank slider mechanism, a rocker slider mechanism, etc. During the process of the support leg assembly 300 relative to the support rod assembly 100 being unfolded from being folded, the sliding sleeve assembly 200 slides relative to the support rod assembly 100. The support leg assembly 300 is unfolded to different degrees relative to the support rod assembly 100, and the sliding sleeve assembly 200 is in different positions of the support rod assembly 100.

[0096] For example, 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 sliding 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, and the support rod assembly 100 provides positioning and guidance for the sliding of the sliding 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 sliding sleeve assembly 200 is cylindrical to ensure the smoothness of the sliding of the sliding sleeve assembly 200. For example, 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, more specifically, the rotation axis of the preliminary opening piece 500 is coaxial with the central axis of the support rod assembly 100. For example, 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.

[0097] For example, the sliding sleeve assembly 200 is sleeved on the periphery of the support rod assembly 100, the support rod assembly 100 extends out of the top end of the sliding sleeve assembly 200, and the support leg assembly 300 is rotationally connected to the bottom end of the main cylinder of the sliding sleeve assembly 200.

[0098] For example, the support rod assembly 100 has a first outer peripheral wall 111, the sliding sleeve assembly 200 is slidingly sleeved on the first outer peripheral wall 111 of the support rod assembly 100, specifically, the first outer peripheral wall 111 is located in the first telescopic section; the first outer peripheral wall 111 of the support rod assembly 100 and the inner peripheral wall of the sliding sleeve assembly 200 have a sliding gap therebetween, so that the friction between the support rod assembly 100 and the sliding sleeve assembly 200 is smaller or close to zero, so that 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 automatically 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 reduce the friction while ensuring the smooth sliding of the sliding assembly and the support rod assembly 100. In order to ensure the overall consistency, generally, the cross section of the sliding sleeve assembly 200 is circular.

[0099] To avoid the wobble of the support rod assembly 100 and the sliding sleeve assembly 200 when they slide relative to each other, the gap between the outer circumferential wall of the support rod assembly 100 and the inner circumferential wall of the sliding sleeve assembly 200 can be limited. For example, in some embodiments, the sliding gap between the outer circumferential wall of the support rod assembly 100 and the inner circumferential 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, the gap fit sliding of the support rod assembly 100 and the sliding sleeve assembly 200 is ensured while avoiding the wobble of the support rod assembly 100 and the sliding sleeve assembly 200 when they slide relative to each other, making the automatic opening and folding of the multi-legged support more reliable.

[0100] For example, when the at least three support leg assemblies 300 are in the folded state 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 in the folded state 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.

[0101] For example, to reduce costs and improve aesthetics, the shapes and sizes of the at least three support leg assemblies 300 are generally the same. When the multi-legged support is suitable for a mobile phone, the multi-legged support can also be set as a remote-controlled selfie stick. For example, a mounting groove for accommodating a remote controller can be provided 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-legged support.

[0102] It should be understood that when the at least three support leg assemblies 300 are kept in the folded state relative to the support rod assembly 100, the at least three support leg assemblies 300 can be kept in a stable folded state relative to the support rod assembly 100. For example, during the process of carrying the multi-legged support, the support leg assemblies 300 are kept in a stable folded state relative to the support rod assembly 100, and the support leg assemblies 300 cannot be spread out relative to the support rod assembly 100, for example, the support leg assemblies 300 cannot be spread out relative to the support rod assembly 100 due to their own weight. For example, in the folded state, the support leg assemblies 300 are clamped to the connecting rod 400, the support rod assembly 100, or the sliding sleeve assembly 200. For another example, the support leg assemblies 300 are magnetically attracted to the connecting rod 400, the support rod assembly 100, or the sliding sleeve assembly 200.

[0103] In the common case, the at least three support foot assemblies 300 are further opened relative to the support pole assembly 100 in the initially opened state of the at least three support foot assemblies 300 relative to the support pole assembly 100, such that the at least three support foot assemblies 300 are splayed relative to the support pole assembly 100, thereby enabling the at least three support foot assemblies 300 to be supported on a support surface. In the uncommon case, the initially opened state of the at least three support foot assemblies 300 relative to the support pole assembly 100 is one of the splayed states of the at least three support foot assemblies 300 relative to the support pole assembly 100, i.e. the at least three support foot assemblies 300 are supportable on a support surface in the initially opened state of the at least three support foot assemblies 300 relative to the support pole assembly 100.

[0104] 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 adsorbing force (e.g. a vacuum adsorbing force), a clamping force, a magnetic 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 force of the connecting rod 400, the support pole assembly 100 or the sliding sleeve assembly 200. The folding of the at least three support leg assemblies 300 against the support pole assembly 100 to the preliminary unfolding of the at least three support leg assemblies 300 against the support pole assembly 100 is accompanied by a decrease or absence of the folding force that the support leg assembly 300 is subjected to, which makes it easier for the support leg assembly 300 to be unfolded against the support pole assembly 100, and thus makes it easier for the support leg assembly 300 to be in the unfolded state against the support pole assembly 100. For example, in the state that the support leg assembly 300 is preliminarily unfolded against the support pole assembly 100, it is easier for the user to manually unfold the support leg assembly 300 against the support pole assembly 100, or it is easier for the user to slide the sliding sleeve assembly 200, thus facilitating the unfolding of the support leg assembly 300 against the support pole assembly 100, because the folding force that the support leg assembly 300 is subjected to is decreased or absent. For another example, in the state that the support leg assembly 300 is preliminarily unfolded against the support pole assembly 100, the support leg assembly 300 is unfolded against 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 against the support pole assembly 100 under the weight of the moving assembly, thus making the support leg assembly 300 be in the unfolded state against 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.

[0105] In some 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, and the retraction force applied to the at least three support leg assemblies 300 remains unchanged. In some 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, and the retraction force applied to the at least three support leg assemblies 300 is changed. In some 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, and the retraction force applied to the at least three support leg assemblies 300 is changed. In some 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, and the retraction force applied to the at least three support leg assemblies 300 is changed. In some 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, and the retraction force applied to the at least three support leg assemblies 300 is changed.

[0106] It can be understood that the retraction force applied to the at least three support leg assemblies 300 is magnetic force. Compared with other ways, due to the action of the magnetic field, the magnetic force can promote the at least three support leg assemblies 300 to be retracted and attached to the support pole assembly 100 during the process of the at least three support leg assemblies 300 being opened to the retracted state relative to the support pole assembly 100, so that the process of the at least three support leg assemblies 300 being automatically retracted and attached to the support pole assembly 100 is more rapid and smooth, and the at least three support leg assemblies 300 can be finally more closely attracted to the support pole assembly 100. In addition, since the retraction force applied to the at least three support leg assemblies 300 is magnetic force, compared with the way in which the retraction force is clamping force, the at least three support leg assemblies 300 can be more smoothly pried open when the at least three triggering portions 520 rotate, so that the situation of accidental jamming is avoided.

[0107] Specifically, the support surface can be a ground, a table top, or the like. The support surface can be a plane or a curved surface, and the support surface can be a horizontal surface or an inclined surface.

[0108] In some implementations, with reference to FIGS. 1-27, or with reference to FIGS. 29-55, or with reference to FIGS. 56-66, the preliminary opening member 500 is rotatable relative to the support pole assembly 100, which means that at least one partial movement of the preliminary opening member 500 during the movement of the preliminary opening member 500 relative to the support pole assembly 100 is a rotational movement of the preliminary opening member 500 relative to the support pole assembly 100. For example, the preliminary opening member 500 is connected to the support pole assembly 100 by a rotary connection, for example, the preliminary opening member 500 and the support pole assembly 100 are connected by a rotary pair, and the user can directly actuate the preliminary opening member 500 to rotate the preliminary opening member 500 relative to the support pole assembly 100. For another example, the preliminary opening member 500 is both translatable relative to the support pole assembly 100 and rotatable relative to the support pole assembly 100.

[0109] As can be appreciated, the first external action applied to the preliminary opening member 500 can cause the preliminary opening member 500 to rotate relative to the support pole assembly 100, thereby causing the support foot assembly 300 to preliminarily open relative to the support pole assembly 100. For example, in the case where the preliminary opening member 500 is only rotatable relative to the support pole assembly 100, the first external action includes a rotational torque about the rotation axis of the preliminary opening member 500 applied to the preliminary opening member 500 (e.g., the user manually rotates the preliminary opening member 500), which causes the preliminary opening member 500 to rotate relative to the support pole assembly 100, thereby causing the support foot assembly 300 to preliminarily open relative to the support pole assembly 100. In the case where the preliminary opening member 500 is both translatable and rotatable relative to the support pole assembly 100, the first external action includes a pair of forces applied to the preliminary opening member 500 in the first direction, which causes the preliminary opening member 500 to translate in the first direction relative to the support pole assembly 100 and thereby causes the preliminary opening member 500 to rotate relative to the support pole assembly 100, or the first external action includes a rotational torque about the rotation axis of the preliminary opening member 500 applied to the preliminary opening member 500, which causes the preliminary opening member 500 to rotate relative to the support pole assembly 100.

[0110] In some implementations, referring to Figs. 1-27, or referring to Figs. 56-66, the preliminary opening member 500 is rotationally limited to the support pole assembly 100 such that the preliminary opening member 500 cannot exceed the initial position, or the preliminary opening member 500 exceeds the second position, for example, in the state where the preliminary opening member 500 is in the initial position, the preliminary opening member 500 directly or indirectly abuts the support pole assembly 100; for another example, in the state where the preliminary opening member 500 is in the second position, the preliminary opening member 500 directly or indirectly abuts the support pole assembly 100.

[0111] For example only, referring to Figs. 1-27, or referring to Figs. 29-55, or referring to Figs. 56-66, during the process in which the at least three support foot assemblies 300 are retracted relative to the support pole assembly 100 to become preliminarily opened relative to the support pole assembly 100, the support foot assembly 300 rotates relative to the support pole assembly 100 by an angle greater than or equal to 0.5°, such as 0.5°, 1°, 2°, 3°, etc.

[0112] In other implementations, during the process in which the at least three support foot assemblies 300 are retracted relative to the support pole assembly 100 to become preliminarily opened relative to the support pole assembly 100, the support foot assembly 300 rotates relative to the support pole assembly 100 by an angle greater than or equal to 0.3°, such as the angle can be 0.3°, 0.4°, 0.5°, etc.

[0113] It should be understood that the initial position of the preliminary opening member 500 can refer to a specific position or a range of positions; the second position of the preliminary opening member 500 can refer to a specific position or a range of positions, for example, any position capable of enabling the support leg assembly 300 to be in the preliminary opening state, which can be the second position of the preliminary opening member 500.

[0114] In some implementations of the embodiments of the present application, referring to FIGS. 6, 18, etc., the preliminary opening member 500 can also translate relative to the support rod assembly 100 in the first direction during the rotation of the preliminary opening member 500 relative to the support rod assembly 100. The preliminary opening member 500 translates relative to the support rod assembly 100 in the first direction and rotates relative to the support rod assembly 100 during the application of the first external action to the preliminary opening member 500. The first external action includes a force acting on the preliminary opening member 500 in the first direction, and / or the first external action includes a torque acting on the preliminary opening member 500 about the rotation axis 501 thereof. It can be understood that the preliminary opening member 500 can be rotated relative to the support rod assembly 100 by applying the first external action to the preliminary opening member 500, so that the support leg assembly 300 is preliminarily opened relative to the support rod assembly 100. The first external action can have various forms, so as to facilitate the use of the multi-leg support.

[0115] In some cases, the first external action includes a force in the first direction (all or part of the first external action is a force in the first direction, for example, a component of the first external action is a force in the first direction). The force is a pushing force directed toward the support rod assembly 100, and the user can press the preliminary opening member 500 by hand, or the preliminary opening member 500 can impact the support surface to achieve the pressing of the preliminary opening member 500. The force can be a pulling force away from the support rod assembly 100, for example, the user can pull the preliminary opening member 500. It can be understood that the force needs to overcome the resistance (which includes the frictional resistance between the preliminary opening member 500 and the support rod assembly 100) that the preliminary opening member 500 receives, so that the preliminary opening member 500 translates relative to the support rod assembly 100 in the first direction, and so that the preliminary opening member 500 rotates relative to the support rod assembly 100.

[0116] 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, the user uses his 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 in turn, the support leg assembly 300 is preliminarily opened relative to the support rod assembly 100.

[0117] In some implementations, the preliminary opening member 500 and the support rod assembly 100 are connected by a cam pair, and in the process of the movement of the preliminary opening member 500 relative to the support rod assembly 100, the preliminary opening member 500 moves both translationally and rotationally relative to the support rod assembly 100. 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 cooperate, and the combination of the connecting protrusion and the connecting groove forms a cam pair, and the connecting protrusion slides or rolls in the connecting groove, so that the preliminary opening member 500 moves both translationally and rotationally relative to the support rod assembly 100. 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 along the connecting groove.

[0118] 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.

[0119] Further, in the process of the translation of the preliminary opening member 500 relative to the support rod assembly 100 along the first direction and the rotation of the preliminary opening member 500 relative to the support rod assembly 100, the translation of the preliminary opening member 500 relative to the support rod assembly 100 along the first direction plays an auxiliary role in the preliminary opening of the support leg assembly 300.

[0120] In some implementations of the embodiments of the present application, referring to FIG. 6, FIG. 18, etc., the 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.

[0121] 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.

[0122] 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.

[0123] 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 other examples, 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.

[0124] 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.

[0125] In some implementations of the embodiments of the present application, referring to FIGS. 6, 18, 21, etc., 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.

[0126] 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.

[0127] For 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.

[0128] For example, the reset spring 610 can be a column spring, a tower spring, a torsion spring, etc. In some cases, the reset spring 610 is a column 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.

[0129] In some implementations of the embodiments of the present application, referring to FIGS. 6, 18, 21, etc., 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 the 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 parts 540 are all connected to the mounting column 520; the mounting column 520 has a first abutting wall 503, and 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 column spring or a tower spring, the 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 the 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.

[0130] For example, the column spring can be a cylindrical spring, a square column spring, a polygonal column 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.

[0131] It can be understood that the first end of the reset spring is contained in the containing cavity, so that the reset spring is limited to be located in the preliminary opening piece, so that the reset spring is not easy to bend or deviate from its use position during the stretching and contracting process.

[0132] It can be appreciated that the reset spring is a columnar spring or a tower spring, so that the reset spring is easily compressed, and the reset spring does not hinder the movement of the preliminary opening member.

[0133] It should be appreciated that the first thread 510 is an external thread, and the second thread 121 is an internal thread.

[0134] It is obvious that, in the process of rotating the preliminary opening member 500 from the initial position to the second position, the preliminary opening member 500 translates along the rotation axis 501, and the preliminary opening member 500 rotates around the rotation axis 501.

[0135] In some implementations, the mounting column 520 has a first end face 504, and the accommodating cavity 502 is communicated to the first end face 504. In the state that the preliminary opening member 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 between the first end face 504 and the second abutting wall 102 makes it convenient for the preliminary opening member 500 to rotate to the second position, so that the support leg assembly 300 is in the preliminary opening state. In this case, the abutment between the first end face 504 and the second abutting wall 102 also makes the preliminary opening member 500 be limitedly mounted on the support rod assembly 100, and the position of the preliminary opening member 500 relative to the support rod assembly 100 cannot exceed the second position.

[0136] In other implementations, the mounting column 520 has a first end face 504, and the accommodating cavity 502 is communicated to the first end face 504. In the state that the preliminary opening member 500 is in the second position, the first end face 504 has a spacing from the second abutting wall 102, and the reset spring 610 is mostly accommodated in the accommodating cavity 502.

[0137] In some implementations of the embodiments of the present application, referring to FIG. 6, FIG. 18, FIG. 21, etc., 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 return 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, the blocking part 122 is used for blocking the connecting column in a state that the preliminary opening piece is in the initial position; 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 a process that the preliminary opening piece 500 returns from the second position to the initial position, the return 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 that 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 return spring 610. The return spring 610 is sleeved on the connecting column 530, the return spring 610 is prevented from being separated from the accommodating cavity 502, the return 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.

[0138] Specifically, the first fastener 620 can be a threaded part or a riveting part (for example, a screw, a rivet, etc.), and the first fastener 620 also facilitates the installation of the preliminary opening piece 500.

[0139] In some implementations, in a state that the preliminary opening piece 500 is in the initial position, the connecting column 530 directly or indirectly abuts against the blocking part 122.

[0140] 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 return spring 610 is accommodated in the accommodating cavity 502, so that the structure of the multi-leg support is compact.

[0141] In some implementations of the embodiments of the present application, referring to FIGS. 6, 18, 21, etc., or referring to FIGS. 33, 36, 37, 42, 50, etc., the support rod assembly 100 comprises a support rod body 110 and a mounting member 120, the mounting member 120 is mounted on the support rod body 110, each connecting rod 400 is rotatably connected with the mounting member 120; the mounting cavity 101 is arranged on the mounting member 120, the second screw thread 121 is arranged on the mounting member 120, and the mounting member 120 has the second abutting wall 102. It can be understood that the support rod assembly 100 comprises the support rod body 110 and the mounting member 120, which facilitates the assembly of the support rod assembly 100, and the mounting member 120 is used for not only the rotatable connection of the connecting rod 400 but also the mounting of the preliminary opening member 500, so that the structure of the multi-leg support is compact.

[0142] For example only, the mounting member 120 is fixedly connected with the support rod body 110, for example, the mounting member 120 and the support rod body 110 can be fixedly connected by means of screws, interference fitting, rivet connection, etc. By arranging the mounting member 120 for the connection of the preliminary opening member 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 member 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 member 120 mainly plays a connecting role, the support rod body 110 and the mounting member 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 its sliding friction with the sliding sleeve assembly 200, and the mounting member 120 is made of plastic material to reduce the manufacturing cost of the mounting member 120.

[0143] In some implementations of the embodiments of the present application, referring to FIG. 6, FIG. 18, FIG. 21, etc., 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 return spring 610 is sleeved on the connecting column 530; the mounting piece 120 has a retaining portion 122, the retaining portion 122 is provided with a through hole 103, the connecting column 530 passes through the through hole 103, and the retaining portion 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 the first head 621 of the first fastener 620 is located on the opposite side of the retaining portion 122 from the mounting column of the preliminary opening piece 500 respectively; in the process of returning the preliminary opening piece 500 from the second position to the initial position, the return spring 610 acts on the preliminary opening piece 500, and the first head 621 of the first fastener 620 moves towards the retaining portion 122; in the state that the preliminary opening piece 500 is in the initial position, the first head 621 of the first fastener 620 abuts against the retaining portion 122. The first head 621 of the first fastener 620 abuts against the retaining portion 122, which avoids the preliminary opening piece 500 from being separated from the support rod assembly 100; and the first head 621 of the first fastener 620 abuts against the retaining portion 122, and the return spring 610 just returns the preliminary opening piece 500 to the initial position, which avoids the preliminary opening piece 500 from affecting the folding of the support leg assembly 300 on the support rod assembly 100.

[0144] In some implementations of the embodiments of the present application, referring to FIG. 6, FIG. 18, FIG. 21, etc., or referring to FIG. 33, FIG. 36, FIG. 37, FIG. 42, FIG. 50, etc., the mounting piece 120 is mounted at the bottom end of the support rod body 110, 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 which is slidingly adapted to the support rod assembly 100, an inner wall of the sliding cavity 201 is provided with a sliding bar 210 which 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 which is adapted to the sliding bar 210, and the sliding bar 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 bar 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 opening angle of the multi-leg support is too large, the support leg assembly 300 and the connecting rod 400 are deformed, and the multi-leg support is damaged during the use of the multi-leg support.

[0145] Understandably, the second fastener 130 fastens the mounting portion 123 and the support rod body 110 to be connected, 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.

[0146] 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.

[0147] 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.

[0148] For example, as shown in FIG. 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.

[0149] Referring to FIG. 22, the 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 slidably 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 slidably 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.

[0150] Understandably, 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.

[0151] Understandably, 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 more convenient for the user to hold, 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.

[0152] For example, as shown in FIG. 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.

[0153] For example, referring to FIGS. 1-27 or FIGS. 29-55, the 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.

[0154] For example, referring to FIGS. 1-27 or FIGS. 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 to the first mounting sub-member 120a, the second screw 121 is arranged on the first mounting sub-member 120a, the first mounting sub-member 120a includes a mounting part 123, 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 to 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 to the second mounting sub-member 120b by a third fastener 125, which can be a threaded member, a rivet, etc.; the third rotating part 106 is a hole, and the first mounting sub-member 120a and the second mounting sub-member 120b combine to form the third rotating part 106; the advantage of such an arrangement is that the connecting rod 400 can be rotatably mounted to the support rod assembly 100. For example, one way of mounting 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 to the first mounting sub-member 120a by the third fastener 125.

[0155] Specifically, the second screw 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.

[0156] 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.

[0157] In some implementations of the embodiments of the present application, referring to FIGS. 4, 6, 18, etc., or referring to FIGS. 33, 36, 37, 42, 50, etc., 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; during the process that the at least three support leg assemblies 300 are folded to the preliminary opening 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 unfolded, and facilitates the support leg assemblies 300 to be in an unfolded state relative to the support rod assembly 100.

[0158] Referring to FIG. 6, or referring to FIGS. 33, 36, 37, 42, 50, etc., 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; during the process that the at least three support leg assemblies 300 are folded to the preliminary opening 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 unfolded, and facilitates the support leg assemblies 300 to be in an unfolded state relative to the support rod assembly 100.

[0159] For example, referring to FIGS. 1-27, or referring to FIGS. 29-55, the support leg assembly 300 includes a support leg body 310 and a magnetic member 320 detachably mounted on the support leg body 310, and the magnetic member 320 magnetically connects the connecting rod 400 in the state that the support leg assembly 300 is folded on the support rod assembly 100. Moreover, the magnetic member 320 attracting the connecting rod 400 can keep the support leg assembly 300 in the state that the support leg assembly 300 is folded on the support rod assembly 100, and the magnetic member 320 can facilitate the folding of the support leg assembly 300 on the support rod assembly 100, thereby facilitating the storage of the multi-leg support. For example, the magnetic member 320 is made of a permanent magnetic material, such as an aluminum-nickel-cobalt permanent magnetic alloy, an iron-chromium-cobalt permanent magnetic alloy, a permanent ferrite, a rare earth permanent magnetic material, a composite permanent magnetic material, or the like. For example, the connecting rod 400 is partially made of a soft magnetic material, such as cast iron, silicon steel, carbon steel, alloy steel, or soft magnetic ferrite, or the like. The connecting rod 400 includes a soft magnetic body made of a soft magnetic material and a plating layer attached to the soft magnetic body.

[0160] For another example, the connecting rod 400 is at least partially made of a permanent magnetic material, and the support leg assembly 300 is at least partially made of a soft magnetic material to realize the mutual magnetic attraction between the support leg assembly 300 and the corresponding connecting rod 400. For another example, the connecting rod 400 is at least partially made of a permanent magnetic material, and the support leg assembly 300 is at least partially made of a permanent magnetic material.

[0161] It can be understood that, since the connecting rod 410 is closer to the support leg assembly 300 than the support rod assembly 100, the magnetic attraction between the support leg assembly 300 and the connecting rod 410 can make the magnetic attraction surfaces closer to each other than the magnetic attraction between the support leg assembly 300 and the support rod assembly 100, thereby better realizing the magnetic attraction folding effect of the at least three support leg assemblies 300 and effectively avoiding the accidental unfolding of the at least three support leg assemblies 300.

[0162] In some optional implementations, referring to FIGS. 6 and 26, and the like, the support leg body 310 is provided with a clamping groove 312, and the magnetic member 320 is clamped in the clamping groove 312. Clamping the magnetic member 320 in the clamping groove 312 facilitates the installation of the magnetic member 320.

[0163] In some optional implementation manners, referring to FIG. 6, FIG. 26, etc., the card slot 312 is located at the inner side of the support leg body 310; the support leg body 310 is provided with a first installation opening 313 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 arrangement is that, in the process of floor use of the multi-leg support, the magnetic attraction member 320 is prevented from being pulled out of the card slot 312 of the support leg body 310.

[0164] 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.

[0165] 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.

[0166] In some implementation manners of the embodiments of the present application, referring to FIGS. 1-27, or referring to FIGS. 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 folded 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 folded on the support rod assembly 100, the at least three support leg assemblies 300 are in a columnar shape.

[0167] In some implementation manners of the embodiments of the present application, referring to FIG. 4, or referring to FIG. 30, in the state that the at least three support leg assemblies 300 are folded relative to the support rod assembly 100, each touch portion 540 is located between the adjacent two support leg assemblies 300. It can be understood that, in the state that the at least three support leg assemblies 300 are folded, each touch portion 540 is located between the adjacent two support leg assemblies 300, so that the multi-leg support has a compact structure and occupies a small volume. Specifically, the support leg assembly 300 has a contact surface 302, and in the process that the primary opening member 500 is rotated from the initial position to the second position, the touch portion 540 touches the contact surface 302 of the corresponding support leg assembly 300; the contact surfaces 302 of the adjacent two 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 touch portion 540 is located in the space between the contact surfaces 302 of the adjacent two support leg assemblies 300.

[0168] For example, the at least three contact portions are centrally symmetric about the rotation axis of the primary opening member, and the at least three contact surfaces are centrally symmetric about the rotation axis of the primary opening member.

[0169] In another implementation of the embodiment, as shown in FIGS. 4-6 and 14-18, in the folded state of the at least three support leg assemblies 300 around the support rod assembly 100, each contact portion 540 is located between the corresponding two adjacent support leg assemblies 300. The inner wall surface of each support leg assembly 300 has a contact surface 302 configured to contact the corresponding contact portion 540 during the rotation of the primary opening member 500 from the initial position to the second position.

[0170] In the embodiment, the contact surface 302 can be a flat surface or a convex arc surface. It can be understood that, in the folded state of the at least three support leg assemblies, the vertical distance between the rotation axis 501 and the contact surface 302 is less 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 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 between the contact portion 540 and the contact surface 302 is not hard, which can avoid wearing the contact portion 540.

[0171] In the folded state, the at least three support leg assemblies 300 are arranged around the outer periphery of the support rod assembly 100, which is more convenient for a user to hold the multi-leg support, for example, the user can hold the at least three support leg assemblies 300 to take a photo. In the folded state, the contact portion 540 is located between the corresponding two adjacent support leg assemblies 300, that is, the distance from the top end of the contact 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 rotation of the at least three contact portions 540, the contact portion 540 moves along the contact surface 302 to gradually open the at least three support leg assemblies 300. In this way, the process of opening the at least three support leg assemblies 300 by the at least three contact portions 540 is more smooth, and the at least three contact portions 540 do not interfere with the folding of the at least three support leg assemblies 300.

[0172] For example, the inner circumferential wall of the support leg assembly 300 is a concave wall matched with the first outer circumferential wall 111 of the support rod assembly 100, and the outer circumferential wall of the support leg assembly 300 is a convex wall; when the at least three support leg assemblies 300 are in the collapsed state, the outer circumferential walls of the at least three support leg assemblies 300 jointly form a first outer circumferential surface, and the first outer circumferential surface can be held by the user. More specifically, the first outer circumferential wall 111 of the support rod assembly 100 is a curved surface (for example, a cylindrical surface, etc.), the inner circumferential wall of the support leg assembly 300 is a concave arc wall, and the outer circumferential 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 circumferential wall 111 of the support rod assembly 100.

[0173] For example, the support leg assembly 300 is an arc-shaped plate structure as a whole, and when the at least three support leg assemblies 300 are in the collapsed state, the first outer circumferential surface is substantially a cylindrical surface, so as to facilitate the user to hold.

[0174] For example, when the at least three support leg assemblies 300 are in the collapsed state, the first outer circumferential surface is flush with the outer circumferential wall of the main cylinder 220, so that the appearance of the entire multi-leg support is more simple and flat; when the at least three support leg assemblies 300 are in the collapsed state, the first outer circumferential surface and the outer circumferential surface of the main cylinder 220 of the sliding sleeve assembly 200 jointly form the outer circumferential surface of the multi-leg support, and the outer circumferential surface of the multi-leg support as a whole can be held by the user.

[0175] For example, the support leg assembly 300 has a splicing surface on both sides, and when the at least three support leg assemblies 300 are in the collapsed state, 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 both sides of the support leg assembly 300; the contact surface is preferably a plane.

[0176] For example, as shown in FIGS. 1 to 4, when the at least three support leg assemblies 300 are in the collapsed state, the outer circumferential walls of the at least three support leg assemblies 300 jointly form a first outer circumferential surface 3111 which can be held by the user, and the connection between the outer circumferential walls of the adjacent two support leg assemblies 300 is recessed to form an anti-pinch groove 3112, which avoids pinching the user's hand when holding the first outer circumferential surface 3111.

[0177] 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 opening torque of the support leg assembly 300 against the sliding sleeve assembly 200 is larger.

[0178] For example, as shown in FIG. 15 and FIG. 44, when the at least three support leg assemblies 300 are in the collapsed state, the side walls of two adjacent support leg assemblies 300 are spliced with each other; one of the side walls of the two adjacent support leg assemblies 300 is provided with a plurality of positioning slots 3113, and the other is provided with a plurality of positioning protrusions 3114 which are adapted to be inserted into the plurality of positioning slots 3113; specifically, the plurality of positioning slots 3113 are arranged 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 two adjacent support leg assemblies 300 is more accurate and reliable when the at least three support leg assemblies 300 are collapsed, and the integrity of the at least three support leg assemblies 300 is better after being collapsed, thereby reducing the shaking between the adjacent support leg assemblies.

[0179] In some implementations of the embodiments of the present application, referring to FIG. 1-FIG. 27, or FIG. 29-FIG. 55, or FIG. 56-FIG. 66, etc., during the process that 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 opened 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” opened, thereby facilitating the use of the multi-leg support.

[0180] Obviously, the second direction is along the length direction of the support rod assembly 100. During the process that 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, the support leg assembly 300 rotates relative to the sliding sleeve assembly 200, the support leg assembly 300 is initially 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 assembly 300.

[0181] In some implementations, the self-weight action of the movable assembly includes the self-weight action of the sleeve assembly 200, the self-weight action of the support leg assembly 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, the sleeve assembly 200 slides in the second direction, the center of gravity of the sleeve assembly 200 drops, one end of the support leg assembly 300 slides with the sleeve assembly 200, the other end of the support leg assembly 300 opens relative to the support rod assembly 100, the center of gravity of the support leg assembly 300 drops, and the connecting rod 400 preliminarily opens relative to the support rod assembly 100, the connecting rod 400 opens relative to the support rod assembly 100, and the center of gravity of the connecting rod 400 drops.

[0182] In some implementations of the embodiments of the present application, referring to FIGS. 1-27, or referring to FIGS. 33, 47, etc., the first external action includes a rotation torque acting on the preliminary opening member 500 and about the rotation axis 501 thereof, the preliminary opening member 500 has a rotation adjusting portion, and a user can exert a rotation torque about the rotation axis 501 on the rotation adjusting portion with hands to rotate the preliminary opening member 500 from the initial position to the second position. Understandably, the rotation adjusting portion facilitates the user to adjust the preliminary opening member 500 with hands, thereby facilitating the use of the multi-leg support. In this case, the first external action includes the rotation torque exerted by the user on the rotation adjusting portion. The rotation adjusting portion can be in any shape for the user to adjust with hands, and the rotation adjusting portion can be in a columnar shape, a sheet shape, etc.

[0183] In some implementations of the embodiments of the present application, referring to FIG. 4, FIG. 8, etc., or referring to FIG. 44, etc., the number of support leg assemblies 300 is 3, the number of touch portions 540 is 3, the rotating adjusting portion includes 3 adjusting pieces 550, the 3 adjusting pieces 550 are centrally symmetric about the rotating axis 501 of the preliminary opening piece 500, the 3 adjusting pieces 550 are respectively connected to the corresponding 3 touch portions 540, and the two adjacent adjusting pieces 550 are the force applying spaces 505. The 3 fingers of the user can be respectively placed in the 3 force applying spaces 505 to facilitate the user to adjust the rotating adjusting portion by hand. Understandably, the 3 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, and the 3 fingers can all apply a rotating torque to the rotating adjusting portion. For example, the 3 fingers are respectively placed in the 3 force applying spaces 505, and then the user rotates the arm so that the 3 fingers act on the 3 adjusting pieces 550, respectively. More specifically, the 3 fingers of the user are respectively the thumb, the index finger and the middle finger. By using the 3 fingers to apply a rotating torque to the preliminary opening piece 500, 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 1 adjusting piece 550, 2 adjusting pieces 550, 4 adjusting pieces 550, etc.

[0184] In some implementations of the embodiments of the present application, referring to FIG. 6, the preliminary opening piece 500 has a pressure applying portion 560, the first external action includes an action 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 rotate the preliminary opening piece 500 relative to the support rod assembly 100 in a pressing manner, 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, at least 3 adjusting pieces 550 are connected to the pressure applying portion 560, and at least 3 touch portions 540 are connected to the pressure applying portion 560. The above arrangement can enhance the structural strength of the preliminary opening piece 500.

[0185] In some implementations of the embodiments of the present application, referring to FIG. 6, 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 leg assemblies 300 are retracted relative to the support rod assembly 100, the pressure applying 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 retracted relative to the support rod assembly 100, the pressure applying portion 560 of the preliminary opening piece 500 strikes the support surface to make the support surface press the pressure applying 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 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 pressure applying portion 560 protrudes from the bottom end of the support leg assembly 300, which facilitates the pressure applying portion 560 of the preliminary opening piece 500 to strike the support surface. By the way that the pressure applying portion 560 strikes the support surface, it is easier to realize the pressure on the pressure applying portion 560.

[0186] For example, in the retracted state, the height of the pressure applying portion 560 protruding from the bottom end of the support leg assembly 300 is greater than or equal to 1 mm.

[0187] In some implementations of the embodiments of the present application, referring to FIG. 1, FIG. 6, FIG. 13, FIG. 18, FIG. 19, etc., the preliminary opening piece 500 has a pressing portion 560, the first external force includes a force acting on the preliminary opening piece 500 and in the first direction, pressing the pressing portion 560 in the first direction makes the preliminary opening piece 500 translate in the first direction relative to the support rod assembly 100 and the preliminary opening piece 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 piece 500 hits the support surface in the second direction, 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, 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 piece 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 effect 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 effect 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 effect of the moving assembly make the at least three support leg assemblies 300 "automatically" open, thereby facilitating the use of the multi-leg support.

[0188] It can be understood that the pressing portion 560 of the preliminary opening piece 500 hits the support surface in the second direction, and the moving assembly still keeps the inertia of moving in the second direction.

[0189] 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, the gravity center of the sliding sleeve assembly 200 drops, and the at least three support leg assemblies 300 open relative to the support rod assembly 100. In some cases, the gravity effect of the moving assembly further includes the gravity effect of the support leg assemblies 300 and the connecting rod 400, and the inertial effect of the moving assembly further includes the inertial effect 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 rod assembly 100, the sliding sleeve assembly 200 slides along the second direction under the gravity effect and the inertial effect, the gravity center of the sliding sleeve assembly 200 drops, the support leg assemblies 300 slide at one end with the sliding sleeve assembly 200 and open at the other end relative to the support rod assembly 100 under the gravity effect and the inertial effect, the gravity center of the support leg assemblies 300 drops, the connecting rod 400 opens relative to the support rod assembly 100 under the gravity effect and the inertial effect, the gravity center of the connecting rod 400 drops, and the at least three support leg assemblies 300 open relative to the support rod assembly 100.

[0190] In some implementations of the embodiments of the present application, referring to FIGS. 6, 18, etc., the support leg assembly 300 has a contact surface 302, and the contact surface 302 is contacted by the contact portion 540 of the preliminary opening piece 500 in the process of the preliminary opening piece 500 translating along the first direction. 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°, and the contact portion 540 pushes the contact surface 302 in the process of the preliminary opening piece 500 translating along the first direction, thereby facilitating the preliminary opening of the support leg assembly 300 relative to the support rod assembly 100. For example, the contact surface 302 is a plane or a curved surface.

[0191] For example only, 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 piece 500 to push open the corresponding support leg assembly 300 in the process of the preliminary opening piece 500 translating along the first direction, so that the support leg assembly 300 preliminarily opens relative to the support rod assembly 100.

[0192] 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 the at least three support leg assemblies 300 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.

[0193] In other cases, during the process of the preliminary opening piece 500 translating in the first direction, the included angle between the outer normal direction of the contact surface 302 and the first direction is 90° or less than 90°, the translation of the preliminary opening piece 500 in 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 thereof causes the preliminary opening of the support leg assembly 300 relative to the support pole assembly 100.

[0194] The embodiment of the present application also provides a terminal support device, referring to FIG. 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 oblique 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 it is necessary to store the terminal support device, 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.

[0195] For example, the support piece 720 can be a clamp for clamping the electronic terminal, the clamp comprises a clamp body and two clamping parts, the two clamping parts are clamped on the opposite two sides of the electronic terminal respectively, the clamp body can be elastically extended and retracted to adjust the clamping width of the clamp, and the clamping part can be stored in the clamp body. For example, the support piece 720 is a suction disc for adsorbing the electronic terminal, for example, the suction disc can be adsorbed on the back of the electronic terminal. For example, the support piece 720 is a magnetic piece 320 for magnetically attracting the electronic terminal, and the magnetic piece 320 can be an electromagnet or a permanent magnet. For example, the support piece 720 is a tray for supporting the electronic terminal, and the electronic terminal is placed on the tray. For example, the support piece 720 is a clamping piece for clamping the electronic terminal. For example, the support piece 720 is threadedly connected with the electronic terminal, for example, one of the support piece 720 and the electronic terminal is provided with a threaded column, and the other is provided with a threaded hole.

[0196] The embodiment of the present application also provides a method for using the multi-leg support. The 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 piece 500 of the multi-leg support is in the initial position, the preliminary opening piece 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 piece 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; 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 on the preliminary opening piece 500 about the rotation axis 501 of the preliminary opening piece 500, so that the rotating adjusting part rotates about the rotation axis 501 of the preliminary opening piece 500, and the preliminary opening piece 500 rotates from the initial position to the second position, so that the at least three support leg assemblies 300 are preliminarily opened relative to the support rod assembly 100; and opening the at least three support leg assemblies 300 relative to the support rod assembly 100.

[0197] Understandably, the rotation torque applied on the preliminary opening piece 500 by the three fingers and the arm can more easily rotate the preliminary opening piece 500, thereby facilitating the use of the multi-leg support. In the state that the at least three support leg assemblies 300 are preliminarily opened relative to the support rod assembly 100, there are various ways to open the at least three support leg assemblies 300 relative to the support rod assembly 100, for example, the user can more easily separate the support leg assemblies 300 relative to the support rod assembly 100 by hand, or the user can more easily slide the sleeve assembly 200, so that the support leg assemblies 300 are in the open state relative to the support rod assembly 100.

[0198] Further, in the process that the at least three support leg assemblies 300 are preliminarily opened relative to the support rod assembly 100, the sleeve assembly 200 slides in the second direction; the step of opening the at least three support leg assemblies 300 relative to the support rod assembly 100 comprises the following step: the second direction is along the direction of gravity, and the weight of the moving assembly causes the at least three support leg assemblies 300 to be opened relative to the support rod assembly 100, the moving assembly comprises the 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 opened by the weight of the moving assembly, thereby reducing the manual operation of the user, and facilitating the use of the multi-leg support. Obviously, the weight of the moving assembly is greater than the resistance acting on the moving assembly.

[0199] The embodiment of the present application also provides a use method of the multi-leg support, characterized in that 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, and the preliminary opening piece 500 of the multi-leg support is in an initial position, and the preliminary opening piece 500 has a pressing part 560; pressing the pressing part 560 in a first direction to make the preliminary opening piece 500 translate in the first direction, so that the preliminary opening piece 500 rotates relative to the support rod assembly 100, and at least three support leg assemblies 300 are preliminarily opened relative to the support rod assembly 100; and making at least three support leg assemblies 300 open relative to the support rod assembly 100.

[0200] Further, in the process that at least three support leg assemblies 300 are folded to be preliminarily opened relative to the support rod assembly 100, the sliding sleeve assembly 200 slides in a second direction; the step of making at least three support leg assemblies 300 open relative to the support rod assembly 100 comprises the step of making the second direction along the direction of gravity, and the dead weight of the moving assembly makes at least three support leg assemblies 300 open relative to the support rod assembly 100, the moving assembly comprising the sliding sleeve assembly 200, at least three support leg assemblies 300 and at least three connecting rods 400. The dead weight of the moving assembly makes the multi-leg support "automatically open", and the manual operation of the user is reduced, so that the use of the multi-leg support is facilitated.

[0201] Further, in the process that at least three support leg assemblies 300 are folded to be preliminarily opened relative to the support rod assembly 100, the sliding sleeve assembly 200 slides in a second direction; the step of pressing the pressing part 560 in the first direction to make the preliminary opening piece 500 translate in the first direction comprises the step of making the pressing part 560 of the preliminary opening piece 500 impact a support surface in the second direction, so that the preliminary opening piece 500 translates in the first direction relative to the support rod assembly 100, and the second direction is along the direction of gravity; the step of making at least three support leg assemblies 300 open relative to the support rod assembly 100 comprises the step of making the dead weight and inertia of the moving assembly make at least three support leg assemblies 300 open relative to the support rod assembly 100, the moving assembly comprising the sliding sleeve assembly 200, at least three support leg assemblies 300 and at least three connecting rods 400 of the multi-leg support, and the inertia of the moving assembly comprises the inertia that the moving assembly keeps moving in the second direction in the process that the pressing part 560 impacts the support surface in the second direction. The dead weight and inertia of the moving assembly make the multi-leg support "automatically open", and the dead weight and inertia of the moving assembly make the support leg assemblies 300 of the multi-leg support open faster, so that the use of the multi-leg support is facilitated.

[0202] The embodiment of the present application also provides a method for using the multi-leg support, characterized in that the 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 piece 500 of the multi-leg support is in the initial position, and the multi-leg support has a force applying piece; applying pressure to the force applying piece in a first direction to make the force applying piece translate in the first direction, so that the preliminary opening piece 500 rotates relative to the support rod assembly 100, and at least three support leg assemblies 300 are preliminarily opened relative to the support rod assembly 100; and making at least three support leg assemblies 300 open relative to the support rod assembly 100.

[0203] Referring to FIGS. 29-55, the 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 respectively rotationally connected to the sliding sleeve assembly 200. The at least three connecting rods 400 respectively correspond to the at least three support leg assemblies 300. One end of each 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 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 parts 570, which respectively correspond to the at least three support leg assemblies 300. In the process that the preliminary opening piece 500 translates from the initial position to the third position, the pushing parts 570 push the corresponding support leg assemblies 300 to make the at least three support leg assemblies 300 fold relative to the support rod assembly 100 to preliminarily open relative to the support rod assembly 100.

[0204] It can be understood that the translation of the preliminary opening piece 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 opened relative to the support rod assembly 100, and the use of the multi-leg support is facilitated.

[0205] It can be understood that, in the process that the pushing part 570 pushes the corresponding support leg assembly 300 to make the at least three support leg assemblies 300 relative to the support rod assembly 100 from being folded to being preliminarily opened, the pushing part 570 slides relative to the support rod assembly 100 and pushes the corresponding support leg assembly 300 to make the at least three support leg assemblies 300 relative to the support rod assembly 100 from being folded to being preliminarily opened.

[0206] For example only, the sliding direction of the preliminary opening part 500 is along the length direction of the support rod assembly 100, and more specifically, the sliding direction of the preliminary opening part 500 is along the central axis of the support rod assembly 100.

[0207] It can be understood that the embodiments shown in FIGS. 29-55 are different from the embodiments shown in FIGS. 1-27 in that the preliminary opening part 500 is connected to the support rod assembly 100 in different ways, and the preliminary opening part 500 preliminarily opens the support rod assembly 100 in different ways.

[0208] In some implementations, referring to FIGS. 36, 37, etc., the support rod assembly 100 is provided with a mounting cavity 101, and the preliminary opening part 500 is in sliding fit with the mounting cavity 101 of the support rod assembly 100; or the preliminary opening part 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 part 500.

[0209] Specifically, when the preliminary opening part 500 slides relative to the support rod assembly 100, the second external force includes a force in the first direction on the preliminary opening part 500, and the preliminary opening part 500 is subjected to a force to make the preliminary opening part 500 translate in the first direction relative to the support rod assembly 100.

[0210] It should be understood that the initial position of the preliminary opening part 500 can refer to a specific position or a range of positions; the third position of the preliminary opening part 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 a preliminarily opened state can be the third position of the preliminary opening part 500.

[0211] It should be understood that the translation direction of the preliminary opening part 500 can be in the first direction, or the translation direction of the preliminary opening part 500 can be in the opposite direction of the first direction.

[0212] In some implementations, the second external action includes an action force acting on the preliminary opening member 500 and in the first direction. It can be appreciated that the action force acting on the preliminary opening member 500 in the first direction causes the preliminary opening member 500 to translate from the initial position to the third position, so that the pushing portion 570 of the preliminary opening member 500 pushes the corresponding support leg assembly 300 to cause the at least three support leg assemblies 300 to fold relative to the support pole assembly 100 to become the at least three support leg assemblies 300 to preliminarily open relative to the support pole assembly 100.

[0213] It can be appreciated that the second external action is all the action force acting on the preliminary opening member 500 and in the first direction, or one component of the second external action is the action force acting on the preliminary opening member 500 and in the first direction. More specifically, the action force is a pushing force directed to the support pole assembly 100, the user can press the preliminary opening member 500 by hand, 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 appreciated 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.

[0214] 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.

[0215] In some implementations, referring to FIGS. 33, 36, 37, 42, 50, etc., the multi-leg support further includes a return spring 610 acting on the preliminary opening member 500, and the return spring 610 causes the preliminary opening member 500 to return from the third position to the initial position. It can be appreciated that the return 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 pushing portion 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.

[0216] It can be appreciated 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 also includes the elastic force that the return spring 610 exerts on the preliminary opening member 500.

[0217] For another example, in the state that the at least three support leg assemblies 300 preliminarily open relative to the support pole assembly 100, the return spring 610 causes the preliminary opening member 500 to return from the third position to the initial position.

[0218] For example, the reset spring 610 can be a column spring, a tower spring, a torsion spring, etc. In some cases, the reset spring 610 is a column 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.

[0219] In some implementations, referring to FIGS. 33, 36, 37, 42, 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-and-touch portions 570 are all connected to the mounting column 520; the mounting column 520 has a first abutting wall 503 located in the accommodation cavity, and the support rod assembly 100 has a second abutting wall 102 located in the mounting cavity 101; the reset spring 610 is a column 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 of the preliminary opening piece 500 being 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. It can be understood that the mounting column 520 is slidingly mounted in the mounting cavity 101, and the reset spring 610 is a column spring or a tower spring, so that the reset spring 610 is easy to be compressed, and the reset spring 610 does not hinder the translation of the preliminary opening piece 500.

[0220] For example, the column spring can be a cylindrical spring, a square column spring, a polygonal column 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. It should be understood that the second external force includes a pushing force acting on the preliminary opening piece 500 in the direction of translation.

[0221] In some implementations, referring to FIGS. 33, 36, 37, 42, 50, etc., the mounting column 520 is provided with an accommodation cavity 502, the accommodation cavity 502 is communicated to one end of the mounting column 520, and the first abutting wall 102 is located in the accommodation cavity 502; and the first end of the reset spring 610 is accommodated in the accommodation cavity 502. It can be understood that the first end of the reset spring 610 is accommodated in the accommodation cavity 502, so that the reset spring 610 is at least partially accommodated in the accommodation cavity 502, so that the overall structure of the multi-foot support is compact. Moreover, the first end of the reset spring 610 is accommodated in the accommodation 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 during the stretching and contracting process.

[0222] In some implementations, referring to FIGS. 33, 36, 37, 42, 50, etc., the preliminary opening piece 500 further comprises a connecting column 530 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, and 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 being separated from the support rod assembly 100; the preliminary opening piece 500 further comprises a blocking piece 580 mounted on the connecting column 530, and 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 is returned 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. Understandably, the blocking part 122 blocks the connecting column 530 of the preliminary opening piece 500, so that the preliminary opening piece 500 is mounted on the support rod assembly 100 in a limited manner, avoiding that the preliminary opening piece 500 is 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, so that the reset spring 610 is not easy to bend or separate from its use position in the stretching and retracting process, and also makes the structure of the multi-leg support compact.

[0223] For example, the preliminary opening piece 500 further comprises a fourth fastener 590 fastened 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.

[0224] 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, and 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.

[0225] In some implementations, referring to FIGS. 33, 36, 37, 42, 50, etc., in the state that the preliminary opening piece 500 is in the initial position, the connecting column 530 directly or indirectly abuts against the blocking part 122.

[0226] In some embodiments, referring to FIG. 33, FIG. 36, FIG. 37, FIG. 42, FIG. 50, etc., the 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 is located in the receiving cavity 502; the first end of the reset spring 610 is accommodated in the receiving cavity 502; and one end of the connecting column 530 is accommodated in the receiving cavity 502. Understandably, one end of the connecting column 530 is accommodated in the receiving cavity 502, the first abutting wall is located in the receiving cavity 502, and the first end of the reset spring 610 is accommodated in the receiving cavity 502, so that the structure of the multi-leg support is compact. The first end of the reset spring 610 is accommodated in the receiving cavity 502, so that the reset spring 610 is not easy to bend or deviate from its use position during the extension and retraction process.

[0227] Specifically, the mounting member 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 member 500 is slidingly mounted in the support rod assembly 100.

[0228] In some embodiments, referring to FIG. 33, FIG. 36, FIG. 37, FIG. 42, FIG. 50, etc., the 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 is located in the receiving cavity 502; the first end of the reset spring 610 is accommodated in the receiving cavity 502; the preliminary opening member 500 further comprises a connecting column 530, the connecting column 530 is connected to the mounting column 520, one end of the connecting column 530 is accommodated in the receiving cavity 502, and the reset spring 610 is sleeved on the connecting column 530; the mounting member 120 has a blocking portion 122, in the state that the preliminary opening member 500 is in the initial position, the blocking portion 122 blocks the connecting column 530; the preliminary opening member 500 further comprises a blocking member 580 mounted on the connecting column 530, in the state that the preliminary opening member 500 is in the initial position, the blocking member 580 abuts against the blocking portion 122 to achieve the blocking of the blocking portion 122 to the connecting column 530; in the process that the preliminary opening member 500 returns from the third position to the initial position, the reset spring 610 acts on the preliminary opening member 500 to make the blocking member 580 move towards the blocking portion 122.

[0229] Specifically, the mounting cavity 101 is communicated to the mounting portion 123, and the blocking portion 122 is arranged on the mounting portion 123. The second fastener 130 is fastened and connected with the first mounting sub-member 120a through the support rod body 110.

[0230] In some embodiments, referring to FIG. 33, FIG. 36, FIG. 37, FIG. 42, FIG. 50, etc., the preliminary opening piece 500 has a pressing portion 560, the second external force includes a 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 press the preliminary opening piece 500 to rotate relative to the support rod assembly 100, 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.

[0231] 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.

[0232] In some embodiments, referring to FIG. 33, FIG. 36, FIG. 37, FIG. 42, FIG. 50, etc., 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 retracted 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 retracted 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 then the preliminary opening piece 500 translates from the initial position to the third position.

[0233] 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.

[0234] In some embodiments, referring to FIG. 33, FIG. 36, FIG. 37, FIG. 42, FIG. 50, etc., the preliminary opening member 500 has a pressing portion 560, the second 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 causes the preliminary opening member 500 to translate in the first direction relative to the support rod assembly 100, thereby causing the preliminary opening member 500 to translate from the initial position to the third position; the sliding sleeve assembly 200 slides in the second direction during the process of the at least three support leg assemblies 300 being retracted relative to the support rod assembly 100 to the preliminary opening of the at least three support leg assemblies 300 relative to the support rod assembly 100; when the at least three support leg assemblies 300 are retracted 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, thereby causing the preliminary opening of the at least three support leg assemblies 300 relative to the support rod assembly 100, after the preliminary opening of the at least three support leg assemblies 300 relative to the support rod assembly 100 by the pressing portion 560 of the preliminary opening member 500 hitting the support surface in the second direction and the second direction being along the direction of gravity, the dead weight and inertia of the moving assembly cause the at least three support leg assemblies 300 to 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 and inertia of the moving assembly cause the at least three support leg assemblies 300 to "automatically" open, thereby facilitating the use of the multi-leg support.

[0235] It can be understood that the pressing portion 560 of the preliminary opening member 500 hits the support surface in the second direction, and the moving assembly still maintains the inertia of moving in the second direction.

[0236] 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 effect, the gravity center of the sliding sleeve assembly 200 drops, and the at least three support leg assemblies 300 open relative to the support bar assembly 100. In some cases, the gravity effect of the moving assembly also includes the gravity effect of the support leg assemblies 300 and the connecting rod 400, and the inertial effect of the moving assembly also includes the inertial effect 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 effect and the inertial effect, the gravity center of the sliding sleeve assembly 200 drops, the support leg assemblies 300 slide at one end with the sliding sleeve assembly 200 and open at the other end relative to the support bar assembly 100 under the gravity effect and the inertial effect, the gravity center of the support leg assemblies 300 drops, the connecting rod 400 opens relative to the support bar assembly 100 under the gravity effect and the inertial effect, the gravity center of the connecting rod 400 drops, and the at least three support leg assemblies 300 open relative to the support bar assembly 100.

[0237] In some implementations, referring to FIGS. 33, 36, 37, 42, 50, etc., the support leg assembly 300 has a contact surface 302, and the contact surface 302 is in contact with the contact surface 302 of the corresponding support leg assembly 300 in the process of the preliminary opening piece 500 translating along the first direction. 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°, and the contact surface 302 is pushed by the pushing part 570 in the process of the preliminary opening piece 500 translating along the first direction, 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.

[0238] Specifically, the contact surface 302 is in contact with the support surface when the at least three support leg assemblies 300 open relative to the support bar assembly 100 to the maximum opening state and are supported on the support surface. More specifically, the support leg assembly 300 includes the support leg body 310 and the anti-skid pad 330, 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.

[0239] In some implementations, referring to FIG. 33, FIG. 36, FIG. 37, FIG. 42, FIG. 47, FIG. 50, etc., the first external action includes a rotational torque acting on the preliminary opening piece 500 and around the rotation axis 501 thereof; it can be understood that the number of the touch-and-engage portions 540 is the same as that of the touch-and-push portions 570.

[0240] Specifically, the at least three touch-and-engage portions 540 are arranged alternately with the at least three touch-and-push portions 570, each touch-and-engage portion 540 is located between two adjacent touch-and-push portions 570, and each touch-and-push portion 570 is located between two adjacent touch-and-engage portions 540.

[0241] In some implementations, referring to FIG. 34, FIG. 37, etc., during the rotation of the preliminary opening piece 500 relative to the support rod assembly 100, the preliminary opening piece 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.

[0242] It can be understood that any one of the at least three holding positions is the initial position, that is, the preliminary opening piece 500 in any holding position is equivalent to the preliminary opening piece 500 in the initial position, and the rotation of the preliminary opening piece 500 can make the touch-and-engage portions 540 touch the corresponding support leg assemblies 300, or the translation of the preliminary opening piece 500 in the first direction can make the touch-and-push portions 570 push the corresponding support leg assemblies 300.

[0243] It can be understood that the touch-and-engage portions 540 of the preliminary opening piece 500 correspond to different support leg assemblies 300 in different corresponding holding positions, and the touch-and-push portions 570 of the preliminary opening piece 500 correspond to different support leg assemblies 300 in different corresponding holding positions.

[0244] 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.

[0245] 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 applied to the preliminary opening piece 500; or, during the rotation of the preliminary opening piece 500 relative to the support rod assembly 100, the rotational torque of the first external action is smaller than the holding torque of the preliminary opening piece 500, and the preliminary opening piece 500 is kept in the holding position.

[0246] In some implementations, referring to FIG. 34, FIG. 37, etc., the multi-leg support further comprises a return spring 610 acting on the preliminary opening member 500; the preliminary opening member 500 has a first clamping portion 581, the support pole assembly 100 has a second clamping portion 122a, the first clamping portion 581 clamps at different positions of the second clamping portion 122a to make the preliminary opening member 500 keep at different holding positions; in the process of applying a first external force on the preliminary opening member 500 to make the preliminary opening member 500 rotate relative to the support pole assembly 100, the preliminary opening member 500 slides relative to the support pole assembly 100 and the return spring 610 stretches and contracts, the first clamping portion 581 is disengaged or clamped on the second clamping portion 122a; when the preliminary opening member 500 stops rotating relative to the support pole assembly 100, the return spring 610 acts on the preliminary opening member 500 to make the first clamping portion 581 clamped on the second clamping portion 122a, and the return spring 610 makes the preliminary opening member 500 return to the initial position.

[0247] It can be understood that the return spring 610 makes the first clamping portion 581 clamped on the second clamping portion 122a on the one hand, and on the other hand, the stretching and contracting of the return spring 610 also facilitates the disengagement of the first clamping portion 581 from the second clamping portion 122a. In the process of the first clamping portion 581 clamped on the second clamping portion 122a or the process of the first clamping portion 581 disengaged from the second clamping portion 122a, the return spring 610 stretches and contracts. The multiple uses of the return spring 610 also make the structure of the multi-leg support compact.

[0248] It can be understood that the first clamping portion 581 can be clamped at least 3 positions of the second clamping portion 122a, so that the preliminary opening member 500 can keep at least 3 holding positions.

[0249] For example, the first clamping portion 581 is provided on the blocking member 580 of the preliminary opening member 500, and the second clamping portion 122a is provided on the mounting member 120 of the support pole assembly 100, more specifically, the second clamping portion 122a is provided on the second mounting sub-member 120b.

[0250] In some implementations, referring to FIGS. 34, 37, etc., the first clamping portion 581 includes at least one first clamping protrusion, the second clamping portion 122a includes at least three second clamping recesses, the at least one first clamping protrusion is clamped in different at least one second clamping recess to make the first clamping portion 581 clamped at different positions of the second clamping portion 122a, the second clamping recess is open to facilitate the first clamping protrusion to be disengaged from the second clamping recess during the rotation of the preliminary opening piece 500 relative to the support rod assembly 100, during the rotation of the preliminary opening piece 500 relative to the support rod assembly 100 so that the first clamping protrusion is disengaged from the second clamping recess, the first clamping protrusion passes through the inner wall of the second clamping recess; when the preliminary opening piece 500 stops rotating relative to the support rod assembly 100, the return spring 610 acts on the preliminary opening piece 500 to make the at least one first clamping protrusion clamped into the corresponding at least one second clamping recess.

[0251] It can be understood that the second clamping recess is open to facilitate the first clamping protrusion to be disengaged from the second clamping recess during the rotation of the preliminary opening piece 500 relative to the support rod assembly 100.

[0252] For example, the second clamping recess is V-shaped.

[0253] In other implementations, the first clamping portion 581 includes at least three first clamping recesses, the second clamping portion 122a includes at least one second clamping protrusion, the at least one second clamping protrusion is clamped in different at least one first clamping recess to make the first clamping portion 581 clamped at different positions of the second clamping portion 122a, the first clamping recess is open, during the rotation of the preliminary opening piece 500 relative to the support rod assembly 100, the second clamping protrusion passes through the inner wall of the first clamping recess. It can be understood that the first clamping recess is open to facilitate the second clamping protrusion to be disengaged from the first clamping recess during the rotation of the preliminary opening piece 500 relative to the support rod assembly 100; during the rotation of the preliminary opening piece 500 relative to the support rod assembly 100 so that the second clamping protrusion is disengaged from the first clamping recess, the second clamping protrusion passes through the inner wall of the first clamping recess; when the preliminary opening piece 500 stops rotating relative to the support rod assembly 100, the return spring 610 acts on the preliminary opening piece 500 to make the at least one second clamping protrusion clamped into the corresponding at least one first clamping recess. For example, the first clamping recess is V-shaped.

[0254] In some embodiments, referring to FIGS. 34, 37, etc., the support rod assembly 100 has at least three partition protrusions 122b, the at least three partition protrusions 122b are staggered with the at least three second clamping grooves, and the space between two adjacent partition protrusions 122b is a second clamping groove; the partition protrusions 122b gradually narrow in the first direction, and the first side 581a of the first clamping protrusion gradually narrows in the opposite direction of the first direction, so that at least one first clamping protrusion is clamped into the corresponding at least one second clamping groove when the preliminary opening piece 500 stops rotating relative to the support rod assembly 100, and the first side 581a of the first clamping protrusion is on the side of the first clamping protrusion close to the partition protrusion 122b.

[0255] It can be understood that the partition protrusions 122b and the first side 581a of the first clamping protrusion are both gradually narrowed, which facilitates the insertion of the first clamping protrusion into the second clamping groove. It can be understood that the inner wall of the second clamping groove is on the partition protrusion 122b, and the blocking part includes the partition protrusion 122b.

[0256] It can be understood that when the preliminary opening piece 500 rotates to any angle relative to the support rod assembly 100, the first clamping protrusion of the preliminary opening piece 500 can be clamped out of the second clamping groove under the action of the return spring 610. For example, when the preliminary opening piece 500 rotates to a certain angle, the first clamping protrusion is just aligned with the second clamping groove, and the first clamping protrusion of the preliminary opening piece 500 is clamped into the second clamping groove under the action of the return spring 610. For another example, when the preliminary opening piece 500 rotates to another angle, the second clamping protrusion is not aligned with the second clamping groove, the first clamping protrusion of the preliminary opening piece 500 is clamped into the second clamping groove under the action of the return spring 610, and the preliminary opening piece 500 rotates in the process of clamping the first clamping protrusion into the second clamping groove.

[0257] In some embodiments, referring to FIGS. 34, 37, etc., the preliminary opening piece 500 has a blocking piece 580, and 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 blocking piece 580 to avoid the preliminary opening piece 500 from being separated from the support rod assembly 100; the blocking piece 580 includes a first clamping part 581, and the blocking part 122 includes a second clamping part 122a, the second clamping part 122a blocks the first clamping part 581 to make the blocking part 122 block the blocking piece 580. It can be understood that the first clamping part 581 and the second clamping part 122a are used to make the preliminary opening piece 500 remain in different holding positions, and are also used to avoid the preliminary opening piece 500 from being separated from the support rod assembly 100, so that the structure of the multi-leg support is compact.

[0258] In some implementations, referring to FIG. 34, during the rotation of the preliminary opening member 500 relative to the support rod 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 being the same as the number of the support leg assemblies 300; any one of the at least three holding positions is the initial position.

[0259] It should be understood that any one of the at least three holding positions is the initial position, i.e., the preliminary opening member 500 in any holding position is equivalent to the preliminary opening member 500 in the initial position, and the translation of the preliminary opening member 500 in the first direction causes the pushing portion 570 to push the corresponding support leg assembly 300.

[0260] Referring to FIGS. 29-55, the present application also provides a method for using the multi-leg support, the method comprising: providing the multi-leg support, at least three support leg assemblies 300 of the multi-leg support being folded to the support rod assembly 100 of the multi-leg support, and the preliminary opening member 500 of the multi-leg support being in the initial position; applying pressure to the preliminary opening member 500 in the first direction to cause the preliminary opening member 500 to 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 causing the at least three support leg assemblies 300 to be unfolded relative to the support rod assembly 100.

[0261] It should be understood that the translation of the preliminary opening member 500 in the first direction can preliminarily open the support leg assemblies 300, thereby facilitating the unfolding of the support leg assemblies 300 relative to the support rod assembly 100.

[0262] In some implementations, during the folding of the at least three support leg assemblies 300 relative to the support rod assembly 100 to 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 in the second direction; the step of causing the at least three support leg assemblies 300 to be unfolded relative to the support rod assembly 100 comprises causing the at least three support leg assemblies 300 to be unfolded relative to the support rod assembly 100 in the second direction along the direction of gravity, and 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, the moving assembly comprising the sliding sleeve assembly 200, the at least three support leg assemblies 300, and the at least three connecting rods 400.

[0263] 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.

[0264] 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 applying a rotation torque around the rotation axis 501 of the rotation adjusting part 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; 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.

[0265] In some embodiments, the number of the support leg assemblies 300 is three, the number of the triggering 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 triggering 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; 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 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.

[0266] 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. The step of unfolding the at least three support leg assemblies 300 relative to the support pole assembly 100 includes the step of allowing the second direction to be along the direction of gravity, and the weight of the moving assembly to cause the at least three support leg assemblies 300 to unfold relative to the support pole 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 poles 400 of the multi-leg support.

[0267] In some other embodiments, please refer to FIGS. 56-59, the multi-leg support includes 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 a first external force, thereby causing the initial unfolding member 500 to rotate from the initial position to the second position.

[0268] 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 helically 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 slider mechanism.

[0269] The moving 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 moving member 522. For another example, the preliminary opening member 500 can be subjected to the first external force by directly or indirectly pushing the moving member 522. In the case that the user directly presses the moving member 522, the moving member 522 is not rotated to reduce the friction of the moving member 522 to the user's hand by arranging the moving member 522 to slide relative to the support rod assembly 100 to indirectly push the preliminary opening member 500 to rotate. In the case that the user indirectly presses the moving member 522 through an intermediate member, the moving member 522 and the intermediate member are not rotated to reduce the friction of the intermediate member to the user's hand. For example, the intermediate member is the force applying member.

[0270] Since the moving member 522 and the preliminary opening member 500 are separate structures, the preliminary opening member 500 does not need to move up and down, and the motion resistance is reduced, so that the user's operation of pressing or pushing the moving member 522 is more labor-saving and convenient, and the preliminary opening operation of the multi-foot support is more convenient and easy to operate.

[0271] Further, as shown in FIGS. 58-65, the moving member 522 and the support rod assembly 100 are slidingly fitted along the rotation axis 501 of the preliminary opening member 500, and the moving member 522 and the support rod assembly 100 are limitingly fitted in the circumferential direction around the rotation axis, and the moving member 522 and the preliminary opening member 500 are screw-fitted to make the preliminary opening member 500 subjected to the first external force when the moving member 522 is subjected to a third external force.

[0272] For example only, the third external force includes a force in the direction of the rotation axis, such as the third external force being only a force in the direction of the rotation axis. In other examples, 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 moving member 522 is installed at the bottom end of the support rod assembly 100.

[0273] 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.

[0274] 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.

[0275] 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.

[0276] 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.

[0277] In an example, referring to FIGS. 56-62, the 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 in many ways, such as by 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 manufacture of the support rod assembly and can also 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 serves as a support and guide, and the mounting piece 120 mainly serves as a connection, the support rod body 110 and the mounting piece 120 can also be made of different materials, such as the support rod body 110 made of metal to improve its structural strength and reduce its sliding friction with the sliding sleeve assembly 200, and the mounting piece 120 made of plastic to reduce the manufacturing cost of the mounting piece 120.

[0278] Further, as shown in FIGS. 56-59, the multi-legged support also 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.

[0279] For example only, 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.

[0280] In this embodiment, since the movable piece 522 is circumferentially limitedly fitted 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.

[0281] For example only, 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 retracted into the support rod assembly 100, so that it is more convenient for the user to press the force applying piece 526. 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 specifically limited here.

[0282] 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 only need to hold the multi-legged support and hit the bottom end of the multi-legged support against an external object, so that the force receiving part is subjected to force. Therefore, the user can exert a third external force on the force receiving part by pressing the force receiving part or hitting the force receiving part, so as to meet the user's demand for preliminary opening of the multi-legged 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-legged 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 push the preliminary opening part 500 to rotate, and realize rotation of the preliminary opening part 500 from the preliminary position to the second position.

[0283] 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. In the state where 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.

[0284] In this example, the multi-legged support occupies a small volume in the storage state, which is more convenient for storage and placement of the multi-legged support, and can also avoid that an object or a person outside the multi-legged support in the storage state accidentally touches the force receiving part, for example, causes 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-legged 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-legged support is more convenient to use.

[0285] 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 to indirectly push the preliminary opening part 500 to rotate, and realize rotation of the preliminary opening part 500 from the preliminary position to the second position.

[0286] 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 arranged, 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.

[0287] To facilitate assembly, optionally, the force receiving member 526 is provided separately from the movable member 522. Then the force receiving member 526 and the movable member 522 can be fixedly connected by screws, clamping or the like. The form of the force receiving member 526 can also be many, for example, the force receiving member 526 can be a column structure, a hemispherical structure, etc., which is not specifically limited here.

[0288] In some embodiments, referring to FIGS. 58 and 59, the multi-leg support further comprises a resilient member 527 configured to provide the movable member 522 with an elastic force to reset it, so that after the third external action is removed, the resilient member 527 drives the movable member 522 to reset by the elastic force, so that the preliminary opening member 500 returns to the initial position.

[0289] The resilient member 527 can be a reset spring, such as a compression spring, a torsion spring, a conical spring, etc., and the resilient member 527 can also be a rubber airbag, a rubber elastic member, etc., as long as it can provide the movable member 522 with an elastic force to reset it. By providing the resilient 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, avoiding the preliminary opening member 500 from hindering the folding of the support leg assembly 300 relative to the support rod assembly 100, specifically, avoiding the touch part 540 of the preliminary opening member 500 from hindering the folding of the support leg assembly 300 relative to the support rod assembly 100. Understandably, the third external action needs to be greater than the elastic force exerted by the resilient member 527 on the movable member 522, so that the movable member 522 can slide relative to the support rod assembly 100.

[0290] Further, as shown in FIGS. 58-60, 63-65, the preliminary opening member 500 further comprises a matching part 525, at least three touch parts 540 are connected to the matching part 525, the matching part 525 is rotationally connected to the bottom end of the support rod assembly 100, and the movable member 522 is screwedly matched with the matching part 525; the resilient member 527 is a reset spring, which is sleeved on the periphery of the movable member 522 and clamped between the force receiving member 526 and the matching part 525.

[0291] In the present embodiment, the reset spring is sleeved on the periphery of the movable member 522 and clamped between the force receiving member 526 and the matching part 525, making the multi-leg support structure more compact and occupying less volume.

[0292] 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.

[0293] Specifically, the elastic member 527 is clamped between the force receiving 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 receiving member 526 and the fitting part 525, for example, a recess is arranged on the force receiving 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 receiving member 526, and the other end abuts against the abutting wall of the fitting part 525. In this way, the structure between the force receiving 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 occupies less space.

[0294] In other implementations, the movable member 522 is directly or indirectly reset by a fourth external force, 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 receiving member 526 are reset by their own weights.

[0295] Further, referring to FIGS. 58, 59, 61 and 65, the movable member 522 comprises a guide part 523 extending out of the top end of the preliminary opening member 500 and slidably connected with the support rod assembly 100. The guide part 523 is provided with a guide groove 528 on one of the support rod assembly 100 and the movable member 522, and the other is provided with a protrusion 529 slidably connected with the guide groove 528.

[0296] 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 are spaced apart circumferentially around the guide portion 523.

[0297] 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.

[0298] 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.

[0299] 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.

[0300] 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.

[0301] 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.

[0302] 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.

[0303] 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.

[0304] 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.

[0305] 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.

[0306] 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.

[0307] 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.

[0308] 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.

[0309] 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.

[0310] 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. [Amended according to Rule 91 on 24.10.2025] A multi-legged support, characterized in that, The multi-leg support comprises a support rod assembly, a sliding sleeve assembly, at least three support leg assemblies, at least three connecting rods, and a preliminary opening member, The sliding sleeve assembly is sleeved on the support rod assembly along the length direction of the support rod assembly; The at least three support leg assemblies are respectively rotationally connected to the sliding sleeve assembly; The at least three connecting rods correspond to the at least three support leg assemblies respectively, one end of the connecting rod is rotationally connected to the support rod assembly, the other end is rotationally connected to the corresponding support leg assembly, and the at least three support leg assemblies can be spread or folded relative to the support rod assembly; in the initial state, the at least three support leg assemblies are kept in the state of being folded on the support rod assembly; in the state of being spread relative to the support rod assembly, the at least three support leg assemblies can be supported on a support surface; A first external action applied to the preliminary opening member can make the preliminary opening member rotate relative to the support rod assembly, the preliminary opening member has at least three triggering parts, and the at least three triggering parts correspond to the at least three support leg assemblies respectively; in the process of rotating the preliminary opening member from the initial position to the second position, the triggering part triggers the corresponding support leg assembly to make the at least three support leg assemblies fold relative to the support rod assembly to the state of being preliminarily opened relative to the support rod assembly, so as to facilitate the at least three support leg assemblies to be spread relative to the support rod assembly.

2. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 1, characterized in that, In the process of applying the first external action to the preliminary opening member, the preliminary opening member rotates relative to the support rod assembly and the preliminary opening member translates relative to the support rod assembly along a first direction; The first external action comprises a force acting on the preliminary opening member and along the first direction, and / or the first external action comprises a rotational torque acting on the preliminary opening member and around the rotation axis thereof.

3. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 1, characterized in that, The preliminary opening member is provided with a first thread, the support rod assembly is provided with a second thread, the first thread cooperates with the second thread, and the rotation axis of the preliminary opening member is coaxial with the central axis of the first thread; In the process of applying the first external action to the preliminary opening member, the preliminary opening member rotates relative to the support rod assembly around the rotation axis and the preliminary opening member translates relative to the support rod assembly along a first direction, and the first direction is along the rotation axis; The first external action comprises a force acting on the preliminary opening member and along the rotation axis, and / or the first external action comprises a rotational torque acting on the preliminary opening member and around the rotation axis.

4. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 3, characterized in that, The multi-leg support further comprises a reset spring, the reset spring acts on the preliminary opening member, and the reset spring makes the preliminary opening member return from the second position to the initial position.

5. [Amended according to Rule 91, new Rule 13.2.2025] The multi-legged support according to claim 4, characterized in that, The preliminary opening member has a mounting column, the first screw is arranged on the mounting column, the support rod assembly has a mounting cavity, the mounting column is mounted in the mounting cavity, the second screw is arranged on the cavity wall of the mounting cavity, and the at least three touch parts are connected to the mounting column. The mounting column has a first abutting wall, the support rod assembly has a second abutting wall, the second abutting wall is located in the mounting cavity, the first end of the reset spring abuts against the first abutting wall, and the second end of the reset spring abuts against the second abutting wall. During rotation of the preliminary opening member from the initial position to the second position, the mounting column moves towards the second abutting wall, and the reset spring is compressed.

6. [Amended according to Rule 91, new Rule 13.2.2025] The multi-legged support according to claim 5, characterized in that, The mounting column is provided with a containing cavity, the containing cavity is communicated to one end of the mounting column, the second abutting wall is located in the containing cavity, and the first end of the reset spring is contained in the containing cavity.

7. [Amended according to Rule 91, new Rule 13.2.2025] The multi-legged support according to claim 5, characterized in that, The reset spring is a columnar spring or a tower-shaped spring, the preliminary opening member further comprises a connecting column, the connecting column is connected to the mounting column, and the reset spring is sleeved on the connecting column. The mounting column is provided with a containing cavity, the containing cavity is communicated to one end of the mounting column, the second abutting wall is located in the containing cavity, and the first end of the reset spring is contained in the containing cavity. One end of the connecting column is contained in the containing cavity.

8. [Amended according to Rule 91, new Rule 13.2.2025] The multi-legged support according to claim 7, characterized in that, The support rod assembly has a blocking part, the blocking part is provided with the through hole, the connecting column passes through the through hole, the blocking part is provided with the second abutting wall, and the blocking part is used for blocking the connecting column when the preliminary opening member is in the initial position. The multi-leg support further comprises a first fastener, the first fastener is in fastening connection with the connecting column, and first heads of the first fastener and the mounting column of the preliminary opening member are located on opposite sides of the blocking part, respectively. During recovery of the preliminary opening member from the second position to the initial position, the reset spring acts on the preliminary opening member, and the first heads of the first fastener move towards the blocking part. When the preliminary opening member is in the initial position, the first heads of the first fastener abut against the blocking part to block the connecting column.

9. [Amended according to Rule 91, new Rule 13.2.2025] The multi-legged support according to claim 5, characterized in that, The mounting column is provided with a containing cavity, the containing cavity is communicated to one end of the mounting column, the first abutting wall is located in the containing cavity, and the first end of the reset spring is contained in the containing cavity. The reset spring is a columnar spring or a tower-shaped spring, the preliminary opening member further comprises a connecting column, the connecting column is connected to the mounting column, and the reset spring is sleeved on the connecting column. The containing cavity is communicated to one end of the mounting column, the first end of the reset spring is contained in the containing cavity, and one end of the connecting column is contained in the containing cavity. The support rod assembly has a blocking part, the blocking part is provided with the through hole, the connecting column passes through the through hole, the blocking part is provided with the second abutting wall, and the blocking part is used for blocking the connecting column when the preliminary opening member is in the initial position.

10. [Amended according to Rule 91, new Rule 13.2.2025] The multi-legged support according to claim 5, characterized in that, The support rod assembly comprises a support rod body and a mounting member mounted on the support rod body, and each connecting rod is rotatably connected to the mounting member; The mounting cavity is arranged in the mounting member, and the second thread is arranged on the mounting member. The mounting member has the second abutting wall.

11. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 7, characterized in that, The preliminary opening member further comprises a connecting column connected to the mounting column, and the reset spring is a columnar spring or a tower-shaped spring. The reset spring is sleeved on the connecting column. The mounting member has a blocking portion, and the blocking portion is provided with a through hole through which the connecting column passes. The blocking portion is provided with the second abutting wall, and the blocking portion is used for blocking the connecting column when the preliminary opening member is in the initial position. The multi-leg support further comprises a first fastener, and the first fastener is fastened to the connecting column. The first head of the first fastener is located on the opposite side of the blocking portion from the mounting column of the preliminary opening member. During the process of returning the preliminary opening member from the second position to the initial position, the reset spring acts on the preliminary opening member, and the first head of the first fastener moves towards the blocking portion. When the preliminary opening member is in the initial position, the first head of the first fastener abuts against the blocking portion to block the connecting column.

12. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 7, characterized in that, The mounting member is mounted on the bottom end of the support rod body. When the at least three support leg assemblies are opened to the maximum open state relative to the sliding sleeve assembly, the sliding sleeve assembly abuts against the mounting member. The mounting member comprises 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 member. The mounting cavity is communicated to the mounting portion. The support rod body is provided with a mounting hole communicated to the bottom end thereof. The mounting portion is inserted into the mounting hole. The support rod assembly further comprises a second fastener. The second fastener is fastened to the mounting portion through the support rod body. The sliding sleeve assembly has a sliding cavity slidably fitted with the support rod assembly. The inner wall of the sliding cavity is provided with a sliding strip extending along the sliding direction of the sliding cavity. The outer wall of the support rod body is concavely provided with a sliding groove. The sliding groove is fitted with the sliding strip. During the sliding process of the sliding sleeve assembly along the support rod assembly, the sliding strip slides in the sliding groove. The second fastener comprises a second head and a second rod portion connected to the second head. The second head is accommodated in the sliding groove. The second rod portion is fastened to the mounting portion through the support rod body. In the state that the sliding sleeve assembly abuts against the support rod assembly, the second head is accommodated in the sliding cavity. The second head is located between the bottom end of the sliding strip and the bottom end of the sliding sleeve assembly.

13. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 1, characterized in that, The multi-leg support further comprises a movable member. The movable member slides relative to the support rod assembly to make the preliminary opening member subjected to a first external force, so that the preliminary opening member is rotated from the preliminary position to the second position.

14. [Amended according to Rule 91 on 24.10.2025] Multi-legged support according to claim 13, characterized in that, The movable element is in sliding fit with the support rod assembly along the rotation axis of the preliminary opening element, and the movable element is in limit fit with the support rod assembly in the circumferential direction around the rotation axis; the movable element is in screw fit with the preliminary opening element, so that the preliminary opening element is subjected to the first external action when the movable element is subjected to the third external action.

15. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 14, characterized in that, The multi-leg support further comprises a force applying element, which is fixedly connected to the movable element, and the force applying element is provided with a force applying part for applying the third external action; The multi-leg support further comprises an elastic element, which is configured to provide an elastic force to the movable element to reset the movable element, so that the preliminary opening element returns to the initial position after the third external action is removed.

16. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 15, characterized in that, The preliminary opening element is installed at the bottom end of the support rod assembly, and the force applying part protrudes from the bottom end of the preliminary opening element in the initial state; In the state that the at least three support leg assemblies are retracted into the support rod assembly, the force applying element is accommodated in the space surrounded by the at least three support leg assemblies, and the force applying element does not protrude from the bottom end of the support leg assembly.

17. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 15, characterized in that, The preliminary opening element further comprises a fitting part, and the at least three touch parts are connected to the fitting part, the fitting part is rotationally connected to the bottom end of the support rod assembly, and the movable element is in screw fit with the fitting part; the elastic element is a reset spring, which is sleeved on the periphery of the movable element and clamped between the force applying element and the fitting part.

18. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 13, characterized in that, The movable element comprises a guide part, which protrudes from the top end of the preliminary opening element and is in sliding connection with the support rod assembly, and the guide part and one of the support rod assembly are provided with a guide groove, and the other is provided with a protrusion which can be slidably connected to the guide groove.

19. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 1, characterized in that, In the state that the at least three support leg assemblies are retracted into the support rod assembly, the at least three support leg assemblies surround the periphery of the support rod assembly, and each touch part is located between the corresponding adjacent two support leg assemblies; The inner wall surface of each support leg assembly has a contact surface, which is configured to contact the corresponding touch part during the rotation of the preliminary opening element from the initial position to the second position.

20. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 1, wherein, In the state that the support leg assemblies are retracted into the support rod assembly, the support leg assemblies are subjected to a retracting force to keep them retracted into the support rod assembly; During the process that the at least three support leg assemblies are retracted relative to the support rod assembly and become preliminarily opened relative to the support rod assembly, the retracting force is weakened or reduced to 0.

21. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 1, characterized in that, In the state that the support leg assemblies are retracted into the support rod assembly, the support leg assemblies and the connecting rod are magnetically attracted to each other; During the process that the at least three support leg assemblies are retracted relative to the support rod assembly and become preliminarily opened relative to the support rod assembly, the attractive force of the connecting rod to the support leg assemblies is weakened or reduced to 0.

22. [Amended pursuant to Rule 91 on 24.10.2025] The multi-legged support of claim 1, wherein, The multi-leg support is used for supporting an electronic terminal or a shooting aid, and at least three of the support leg assemblies can be held in hand when the at least three support leg assemblies are folded to the support rod assembly; During a process in which the at least three support leg assemblies are folded to the support rod assembly and then are preliminarily opened relative to the support rod assembly, the support leg assemblies rotate relative to the support rod assembly by an angle greater than or equal to 0.5°.

23. [Amended pursuant to Rule 91 on 24.10.2025] The multi-legged support of claim 1, wherein, In the state in which the at least three support leg assemblies are folded relative to the support rod assembly, each of the touch portions is located between two adjacent support leg assemblies.

24. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 1, wherein, During the process in which the at least three support leg assemblies are folded relative to the support rod assembly and then are preliminarily opened relative to the support rod assembly, the sliding sleeve assembly slides in a second direction; When the at least three support leg assemblies are preliminarily opened relative to the support rod assembly and the second direction is along the direction of gravity, the weight of the moving assembly causes the at least three support leg assemblies to be opened relative to the support rod assembly, and the moving assembly includes the sliding sleeve assembly, the at least three support leg assemblies, and the at least three connecting rods.

25. [Amended according to Rule 91 on 24.10.2025] Multi-legged support according to any of claims 1-24, characterized in that, The first external action includes a rotational torque acting on the preliminary opening member and about the rotational axis of the preliminary opening member, and the preliminary opening member has a rotational adjusting portion, and a user can exert a rotational torque on the rotational adjusting portion about the rotational axis to rotate the preliminary opening member from the initial position to the second position.

26. [Amended according to Rule 91 on 24.10.2025] Multi-legged support according to claim 25, characterized in that, The number of the support leg assemblies is three, the number of the touch portions is three, the rotational adjusting portion includes three adjusting pieces, the three adjusting pieces are centrally symmetric about the rotational axis of the preliminary opening member, the three adjusting pieces are respectively connected to the three touch portions, and two adjacent adjusting pieces are a force applying space, and three fingers of the user can be respectively placed in the three force applying spaces to facilitate the user to adjust the rotational adjusting portion by hand.

27. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 2, characterized in that, The preliminary opening member has a pressure applying portion, and the first external action includes a force acting on the preliminary opening member and in the first direction. Exerting pressure on the pressure applying portion in the first direction causes the preliminary opening member to translate relative to the support rod assembly in the first direction and rotate relative to the support rod assembly to rotate the preliminary opening member from the initial position to the second position.

28. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 27, characterized in that, The preliminary opening member is installed at the bottom end of the support rod assembly. In the state in which the at least three support leg assemblies are folded relative to the support rod assembly, the pressure applying portion protrudes from the bottom end of the support leg assembly. In the state in which the at least three support leg assemblies are folded relative to the support rod assembly, the pressure applying portion of the preliminary opening member hits the support surface to cause the support surface to exert pressure on the pressure applying portion in the first direction, so that the preliminary opening member translates relative to the support rod assembly in the first direction and rotates relative to the support rod assembly.

29. The multi-leg support according to claim 2, wherein The preliminary opening member has a pressing portion, the first external action includes a force acting on the preliminary opening member and in the first direction, pressing the pressing portion in the first direction causes the preliminary opening member to translate in the first direction relative to the support rod assembly and the preliminary opening member to rotate relative to the support rod assembly to rotate the preliminary opening member from the initial position to the second position; In the state that the at least three support leg assemblies are retracted relative to the support rod assembly, the pressing portion protrudes from the bottom end of the support leg assemblies; In the process that the at least three support leg assemblies are retracted relative to the support rod assembly to the state that the at least three support leg assemblies are preliminarily opened relative to the support rod assembly, the sliding sleeve assembly slides in the second direction; When the at least three support leg assemblies are retracted relative to the support rod assembly and the second direction is along the direction of gravity, the pressing portion of the preliminary opening member hits the support surface in the second direction, causing the preliminary opening member to translate in the first direction relative to the support rod assembly and the preliminary opening member to rotate relative to the support rod assembly, and in turn causing the at least three support leg assemblies to preliminarily open relative to the support rod assembly, After the pressing portion of the preliminary opening member hits the support surface in the second direction and the second direction is along the direction of gravity to preliminarily open the at least three support leg assemblies relative to the support rod assembly, the dead weight and inertial action of the moving assembly cause the at least three support leg assemblies to open relative to the support rod assembly, the moving assembly including the sliding sleeve assembly, the at least three support leg assemblies, and the at least three connecting rods.

30. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 29, wherein, The preliminary opening member is installed at the bottom end of the support rod assembly, and in the state that the at least three support leg assemblies are retracted relative to the support rod assembly, the pressing portion protrudes from the bottom end of the support leg assemblies.

31. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 1, wherein, The first external action includes a torque acting on the preliminary opening member and around the rotation axis thereof, the preliminary opening member has a rotation adjusting portion, and a user can apply a torque around the rotation axis to the rotation adjusting portion to rotate the preliminary opening member from the initial position to the second position.

32. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 2, characterized in that, The support leg assembly has a contact surface, during the translation of the preliminary opening member in the first direction, the contact portion contacts the contact surface of the corresponding support leg assembly, and the outer normal direction of the contact surface and the first direction form an angle greater than 90° to facilitate the preliminary opening of the support leg assembly relative to the support rod assembly.

33. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 1, wherein, During the rotation of the preliminary opening member relative to the support rod assembly, the preliminary opening member can be kept in any one of at least three holding positions, and the number of holding positions is the same as the number of support leg assemblies; Any one of the at least three holding positions is the initial position, and the holding position adjacent to the initial position is the second position.

34. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 33, characterized in that, The multi-leg support further includes a return spring acting on the preliminary opening member; The preliminary opening member has a first clamping portion, the support rod assembly has a second clamping portion, the first clamping portion is clamped at different positions of the second clamping portion to keep the preliminary opening member at different holding positions; During the rotation of the preliminary opening member relative to the support rod assembly under the first external action, the preliminary opening member slides relative to the support rod assembly and the reset spring is stretched and contracted, and the first clamping portion is disengaged or clamped in the second clamping portion; When the rotation of the preliminary opening member relative to the support rod assembly stops, the reset spring acts on the preliminary opening member to make the first clamping portion clamped in the second clamping portion, and the reset spring makes the preliminary opening member return to the initial position.

35. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 33, wherein, The multi-leg support further comprises a reset spring acting on the preliminary opening member; The preliminary opening member has a first clamping portion, the support rod assembly has a second clamping portion, the first clamping portion is clamped at different positions of the second clamping portion to keep the preliminary opening member at different holding positions; During the rotation of the preliminary opening member relative to the support rod assembly under the first external action, the preliminary opening member slides relative to the support rod assembly and the reset spring is stretched and contracted, and the first clamping portion is disengaged or clamped in the second clamping portion; When the rotation of the preliminary opening member relative to the support rod assembly stops, the reset spring acts on the preliminary opening member to make the first clamping portion clamped in the second clamping portion, and the reset spring makes the preliminary opening member return to the initial position.

36. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 35, characterized in that, The first clamping portion comprises at least one first clamping protrusion, the second clamping portion comprises at least three second clamping grooves, and at least one first clamping protrusion is clamped in different at least one second clamping groove to make the first clamping portion clamped at different positions of the second clamping portion, The second clamping groove is open to facilitate the disengagement of the first clamping protrusion from the second clamping groove during the rotation of the preliminary opening member relative to the support rod assembly, and the first clamping protrusion passes through the inner wall of the second clamping groove during the rotation of the preliminary opening member relative to the support rod assembly to make the first clamping protrusion disengage from the second clamping groove; When the rotation of the preliminary opening member relative to the support rod assembly stops, the reset spring acts on the preliminary opening member to make at least one first clamping protrusion clamped into corresponding at least one second clamping groove.

37. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 36, characterized in that, The support rod assembly has at least three separation protrusions, the at least three separation protrusions are staggered with the at least three second clamping grooves, and the space between adjacent two separation protrusions is the second clamping groove; The separating protrusion gradually narrows along a first direction and the first side of the first clamping protrusion gradually narrows along a direction opposite to the first direction so as to facilitate at least one first clamping protrusion to be clamped into corresponding at least one second clamping groove when the primary opening member stops rotating relative to the support rod assembly, the first side of the first clamping protrusion being on a side of the first clamping protrusion close to the separating protrusion.

38. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 34, wherein, The primary opening member has a blocking member, and the support rod assembly has a blocking portion, the blocking portion blocking the blocking member to prevent the primary opening member from being separated from the support rod assembly when the primary opening member is in the initial position; The blocking member includes the first clamping portion, and the blocking portion includes the second clamping portion, the second clamping portion blocking the first clamping portion so that the blocking portion blocks the blocking member.

39. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 1, wherein, When the at least three support leg assemblies are spread relative to the support rod assembly, the user holds the sliding sleeve assembly and lifts the sliding sleeve assembly to make the at least three support leg assemblies retract relative to the support rod assembly.

40. The multi-leg support according to claim 39, wherein, When the support leg assemblies are retracted in the support rod assembly, the support leg assemblies are magnetically attracted to the connecting rods; During the process that the user holds the sliding sleeve assembly and lifts the sliding sleeve assembly to make the at least three support leg assemblies retract relative to the support rod assembly, the magnetic attraction of the magnetic attraction members to the corresponding connecting rods facilitates the retraction of the at least three support leg assemblies in the support rod assembly, the weight of the support rod assembly and the weight of the support leg assemblies facilitate the retraction of the at least three support leg assemblies in the support rod assembly, and the inertia of the support rod assembly and the inertia of the support leg assemblies facilitate the retraction of the at least three support leg assemblies in the support rod assembly.

41. [Amended according to Rule 91 on 24.10.2025] A multi-legged support, characterised in that, The multi-leg support includes a support rod assembly, a sliding sleeve assembly, at least three support leg assemblies, at least three connecting rods, and a primary opening member, The sliding sleeve assembly is sleeved on the support rod assembly along the length direction of the support rod assembly; the at least three support leg assemblies are respectively rotationally connected to the sliding sleeve assembly; The at least three connecting rods correspond to the at least three support leg assemblies respectively, one end of the connecting rod is rotationally connected to the support rod assembly, and the other end is rotationally connected to the corresponding support leg assembly, and the at least three support leg assemblies can be spread or retracted relative to the support rod assembly; In the initial state, the at least three support leg assemblies are kept in the state of being retracted in the support rod assembly; In the state that the at least three support leg assemblies are spread relative to the support rod assembly, the at least three support leg assemblies can be supported on a support surface. The preliminary opening member is slidingly installed on the support rod assembly, and a second external action applied to the preliminary opening member can make the preliminary opening member translate in a first direction relative to the support rod assembly, the preliminary opening member has at least three pushing portions, and the at least three pushing portions correspond to the at least three support leg assemblies respectively; During the process that the preliminary opening member translates from the initial position to the third position, the pushing portions push the corresponding support leg assemblies to make the at least three support leg assemblies fold relative to the support rod assembly to the at least three support leg assemblies preliminarily open relative to the support rod assembly.

42. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 41, characterized in that, The second external action includes a force applied to the preliminary opening member and in the first direction.

43. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 41, wherein, The multi-leg support further includes a reset spring, the reset spring is applied to the preliminary opening member, and the reset spring makes the preliminary opening member return from the third position to the initial position.

44. [Amended according to Rule 91 on 24.10.2025] The multi-legged support according to claim 43, characterized in that, The preliminary opening member has an installation column, the support rod assembly has an installation cavity, the installation column is slidingly installed in the installation cavity, and the at least three pushing portions are connected to the installation column; The installation column has a first abutting wall, the first abutting wall is located in the installation cavity, the support rod assembly has a second abutting wall; A first end of the reset spring abuts against the first abutting wall, and a second end of the reset spring abuts against the second abutting wall; During the process that the preliminary opening member translates from the initial position to the third position, the installation column moves towards the second abutting wall, and the reset spring is compressed.

45. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 44, wherein, The installation column is provided with a containing cavity, the containing cavity is communicated to one end of the installation column, and the second abutting wall is located in the containing cavity; and the first end of the reset spring is contained in the containing cavity.

46. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 44, wherein, The preliminary opening member further includes a connecting column connected to the installation column, the reset spring is a columnar spring or a tower-shaped spring, and the reset spring is sleeved on the connecting column; The support rod assembly has a blocking portion, in a state that the preliminary opening member is in the initial position, the blocking portion blocks the connecting column to prevent the preliminary opening member from being separated from the support rod assembly; The preliminary opening member further includes an abutting member installed on the connecting column, in a state that the preliminary opening member is in the initial position, the abutting member abuts against the blocking portion to make the blocking portion block the connecting column. During the process that the preliminary opening member returns from the third position to the initial position, the reset spring is applied to the preliminary opening member to make the abutting member move towards the blocking portion.

47. [Amended according to Rule 91, 24.10.2025] The multi-legged support of claim 44, wherein, The installation column is provided with a containing cavity, the containing cavity is communicated to one end of the installation column, and the second abutting wall is located in the containing cavity; and the first end of the reset spring is contained in the containing cavity. One end of the connecting column is contained in the containing cavity.

48. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 44, wherein, The support rod assembly includes a support rod body and a mounting member, the mounting member is installed on the support rod body, and each connecting rod is rotationally connected to the mounting member; The installation cavity is arranged in the mounting member, the mounting member has the second abutting wall, and the installation column is slidingly installed on the mounting member.

49. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 48, wherein, The mounting column is provided with a containing cavity, the containing cavity is communicated to one end of the mounting column, and the second abutting wall is located in the containing cavity; the first end of the reset spring is contained in the containing cavity; The preliminary opening piece further comprises a connecting column, the connecting column is connected to the mounting column, one end of the connecting column is contained in the containing cavity, the reset spring is a columnar spring or a tower-shaped spring, and the reset spring is sleeved on the connecting column; The mounting piece has a blocking part, in a state where the preliminary opening piece is in the initial position, the blocking part blocks the connecting column; The preliminary opening piece further comprises an abutting piece mounted on the connecting column, in a state where the preliminary opening piece is in the initial position, the abutting piece is in abutment with the blocking part to achieve that the blocking part blocks the connecting column; In the process that the preliminary opening piece is returned from the third position to the initial position, the reset spring acts on the preliminary opening piece to make the abutting piece move towards the blocking part.

50. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 48, wherein, The mounting piece is mounted at the bottom end of the support rod body, and in a state where the at least three support leg assemblies are opened to the maximum unfolded state relative to the sliding sleeve assembly, the sliding sleeve assembly is in abutment with the mounting piece; The mounting piece comprises a mounting part and a mounting protrusion connected to the mounting part, each connecting rod is rotationally connected to the mounting protrusion of the mounting piece, and the mounting cavity is communicated to the mounting part; The support rod body is provided with a mounting hole communicated to the bottom end thereof, the mounting part is inserted into the mounting hole, and the support rod assembly further comprises a second fastener, the second fastener is fastened and connected to the mounting part through the support rod body; The sliding sleeve assembly has a sliding cavity slidably fitted with the support rod assembly, and an inner wall of the sliding cavity is provided with a sliding strip, the sliding strip extends along the sliding direction of the sliding cavity; An outer wall of the support rod body is concavely provided with a sliding groove, the sliding groove is fitted with the sliding strip, and in the process that the sliding sleeve assembly slides along the length direction of the support rod assembly, the sliding strip slides in the sliding groove; The second fastener comprises a second head part and a second rod part connected to the second head part, the second head part is contained in the sliding groove, and the second rod part is fastened and connected to the mounting part through the support rod body; In the state where the sliding sleeve assembly is in abutment with the support rod assembly, the second head part is contained in the sliding cavity, and the second head part is located between the bottom end of the sliding strip and the bottom end of the sliding sleeve assembly.

51. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 43, wherein, The preliminary opening piece has a mounting column, the support rod assembly has a mounting cavity, the mounting column is slidably mounted in the mounting cavity, and at least three pushing parts are connected to the mounting column; The mounting column has a first abutting wall, the support rod assembly has a second abutting wall, and the second abutting wall is located in the mounting cavity; The first end of the reset spring is in abutment with the first abutting wall, and the second end of the reset spring is in abutment with the second abutting wall; In the process that the preliminary opening piece moves from the initial position to the third position, the mounting column moves towards the second abutting wall, and the reset spring is compressed; In the process that the preliminary opening piece moves from the initial position to the third position, the mounting column moves towards the second abutting wall, and the reset spring is compressed; The mounting column is provided with a receiving cavity, the receiving cavity is communicated to one end of the mounting column, and the first abutting wall is located in the receiving cavity; and the first end of the reset spring is accommodated in the receiving cavity. The preliminary opening piece further comprises a connecting column connected to the mounting column, and the reset spring is a columnar spring or a tower-shaped spring, and the reset spring is sleeved on the connecting column; The support rod assembly is provided with a blocking part, and in the state that the preliminary opening piece is in the initial position, the blocking part blocks the connecting column to avoid the preliminary opening piece from being separated from the support rod assembly; The mounting column is provided with a receiving cavity, the receiving cavity is communicated to one end of the mounting column, and the first abutting wall is located in the receiving cavity; and the first end of the reset spring is accommodated in the receiving cavity; and one end of the connecting column is accommodated in the receiving cavity.

52. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 41, wherein, In the state that the support leg assembly is folded on the support rod assembly, the support leg assembly and the connecting rod are magnetically attracted to each other; In the process that the at least three support leg assemblies are folded relative to the support rod assembly and become preliminarily opened relative to the support rod assembly, the attractive force of the connecting rod on the support leg assembly is weakened or reduced to 0.

53. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 41, wherein, In the state that the support leg assembly is folded on the support rod assembly, the support leg assembly is subjected to a folding force for keeping the support leg assembly folded on the support rod assembly; In the process that the at least three support leg assemblies are folded relative to the support rod assembly and become preliminarily opened relative to the support rod assembly, the folding force is weakened or reduced to 0.

54. [Amended pursuant to Rule 91, 24.10.2025] The multi-legged support of claim 41, wherein, 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 are folded on the support rod assembly, the at least three support leg assemblies can be held by hand; In the process that the at least three support leg assemblies are folded relative to the support rod assembly and become preliminarily opened relative to the support rod assembly, the angle of rotation of the support leg assembly relative to the support rod assembly is greater than or equal to 0.5°.

55. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 41, wherein, In the process that the at least three support leg assemblies are folded relative to the support rod assembly and become preliminarily opened relative to the support rod assembly, the sliding sleeve assembly slides in a second direction; When the at least three support leg assemblies are preliminarily opened relative to the support rod assembly and the second direction is along the direction of gravity, the dead weight of the moving assembly causes the at least three support leg assemblies to be unfolded relative to the support rod assembly, and the moving assembly comprises the sliding sleeve assembly, the at least three support leg assemblies and the at least three connecting rods.

56. [Amended pursuant to Rule 91, 24.10.2025] Multi-legged support according to any of claims 41 to 55, characterized in that, The preliminary opening piece is provided with a pressure applying part, and the second external force includes a force acting on the preliminary opening piece and in the first direction; Pressing the pressure applying part in the first direction causes the preliminary opening piece to translate in the first direction relative to the support rod assembly, so that the preliminary opening piece translates from the initial position to the third position.

57. [Amended according to Rule 91, 24.10.2025] The multi-legged support of claim 56, wherein, The preliminary opening piece is mounted at the bottom end of the support rod assembly; the pressing portion of the preliminary opening member protrudes from the bottom end of the support leg assembly when the at least three support leg assemblies are retracted relative to the support rod assembly; the pressing portion of the preliminary opening member strikes the support surface in the second direction when the at least three support leg assemblies are retracted relative to the support rod assembly, the at least three support leg assemblies are preliminarily opened relative to the support rod assembly, and the second direction is along the direction of gravity, the preliminary opening member translates relative to the support rod assembly in the first direction, and the at least three support leg assemblies are preliminarily opened relative to the support rod assembly.

58. [Amended according to Rule 91, 24.10.2025] The multi-legged support according to any one of claims 41 to 55, wherein, the preliminary opening member has a pressing portion, the second external action includes a force acting on the preliminary opening member and in the first direction, the pressing portion is pressed in the first direction such that the preliminary opening member translates relative to the support rod assembly in the first direction and the preliminary opening member translates from the initial position to the third position; the sliding sleeve assembly slides in the second direction during the process that the at least three support leg assemblies are retracted relative to the support rod assembly to the at least three support leg assemblies are preliminarily opened relative to the support rod assembly; the pressing portion of the preliminary opening member strikes the support surface in the second direction when the at least three support leg assemblies are retracted relative to the support rod assembly, the second direction is along the direction of gravity, the preliminary opening member translates relative to the support rod assembly in the first direction, and the at least three support leg assemblies are preliminarily opened relative to the support rod assembly; the dead weight and inertial effects of the moving assembly cause the at least three support leg assemblies to be unfolded relative to the support rod assembly after the pressing portion of the preliminary opening member strikes the support surface in the second direction and the second direction is along the direction of gravity to preliminarily open the at least three support leg assemblies relative to the support rod assembly, the moving assembly includes the sliding sleeve assembly, the at least three support leg assemblies, and the at least three connecting rods.

59. [Amended according to Rule 91, 24.10.2025] Multi-legged support according to any of claims 41 to 55, characterized in that, the support leg assembly has a contact surface, the contact surface has an outer normal direction that forms an angle greater than 90° with the first direction to facilitate the preliminary opening of the support leg assembly relative to the support rod assembly during the translation of the preliminary opening member in the first direction.

60. [Amended according to Rule 91, 24.10.2025] The multi-legged support of claim 41, wherein, the preliminary opening member is rotatably installed on the support rod assembly; the first external action includes a rotational torque acting on the preliminary opening member and about the rotational axis of the preliminary opening member, and the application of the first external action to the preliminary opening member causes the preliminary opening member to rotate relative to the support rod assembly; The preliminary opening member has at least three touch portions, and the at least three touch portions correspond to at least three support leg assemblies respectively; during rotation of the preliminary opening member from the initial position to a second position, the touch portions touch the corresponding support leg assemblies to make at least three support leg assemblies retract relative to the support rod assembly and then preliminarily open relative to the support rod assembly, so as to facilitate opening of the at least three support leg assemblies relative to the support rod assembly.

61. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 60, wherein, During rotation of the preliminary opening member relative to the support rod assembly, the preliminary opening member can be kept in any one of at least three holding positions, and the number of the holding positions is the same as the number of the support leg assemblies; Any one of the at least three holding positions is the initial position, and a holding position adjacent to the initial position is the second position.

62. [Amended according to Rule 91, 24.10.2025] The multi-legged support of claim 61, wherein, The multi-leg support further comprises a reset spring, and the reset spring acts on the preliminary opening member; The preliminary opening member has a first clamping portion, and the support rod assembly has a second clamping portion, the first clamping portion is clamped in different positions of the second clamping portion to keep the preliminary opening member in different holding positions; During rotation of the preliminary opening member relative to the support rod assembly under the first external action, the preliminary opening member slides relative to the support rod assembly, the reset spring is stretched and contracted, the first clamping portion is separated from or clamped in the second clamping portion; When the preliminary opening member stops rotating relative to the support rod assembly, the reset spring acts on the preliminary opening member to make the first clamping portion clamped in the second clamping portion, and the reset spring makes the preliminary opening member return to the initial position.

63. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 62, wherein, The first clamping portion comprises at least one first clamping protrusion, the second clamping portion comprises at least three second clamping grooves, and at least one first clamping protrusion is clamped in different at least one second clamping groove to make the first clamping portion clamped in different positions of the second clamping portion, The second clamping groove is open to facilitate separation of the first clamping protrusion from the second clamping groove during rotation of the preliminary opening member relative to the support rod assembly, and during rotation of the preliminary opening member relative to the support rod assembly to make the first clamping protrusion separate from the second clamping groove, the first clamping protrusion slides across the inner wall of the second clamping groove; When the preliminary opening member stops rotating relative to the support rod assembly, the reset spring acts on the preliminary opening member to make at least one first clamping protrusion clamped in corresponding at least one second clamping groove.

64. [Amended according to Rule 91, 24.10.2025] The multi-legged support of claim 63, wherein, The support rod assembly has at least three separation protrusions, and the at least three separation protrusions are staggered with the at least three second clamping grooves, and the space between two adjacent separation protrusions is the second clamping groove; The separating protrusion gradually narrows along a first direction and the first side of the first clamping protrusion gradually narrows along a direction opposite to the first direction so as to clamp at least one first clamping protrusion into at least one corresponding second clamping groove when the primary opening member stops rotating relative to the support rod assembly.

65. [Amended according to Rule 91, 24.10.2025] The multi-legged support of claim 61, wherein, The primary opening member has a resisting member and the support rod assembly has a holding part, the holding part holds the resisting member to prevent the primary opening member from being separated from the support rod assembly when the primary opening member is in the initial position. The resisting member includes the first clamping part and the holding part includes the second clamping part, the second clamping part holds the first clamping part so that the holding part holds the resisting member.

66. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 60, wherein, During the rotation of the primary opening member relative to the support rod assembly, the primary opening member can be kept in any one of at least three holding positions, the number of the holding positions being the same as the number of the support leg assemblies; Any one of the at least three holding positions is the initial position.

67. [Amended according to Rule 91, 24.10.2025] Multi-legged support according to any one of claims 60 to 66, characterized in that, The primary opening member has a rotation adjusting part, a user can exert a rotation torque around the rotation axis on the rotation adjusting part to rotate the primary opening member from the initial position to the second position.

68. [Amended according to Rule 91, 24.10.2025] The multi-legged support of claim 67, wherein, The number of the support leg assemblies is three, the number of the touch parts is three, the rotation adjusting part includes three adjusting pieces, the three adjusting pieces are centrally symmetric about the rotation axis of the primary opening member, the three adjusting pieces are respectively connected to the three touch parts, adjacent two adjusting pieces are force applying spaces, the user can respectively place three fingers in the three force applying spaces to adjust the rotation adjusting part with hands.

69. [Amended according to Rule 91 on 24.10.2025] The multi-legged support of claim 60, wherein, In the state that the at least three support leg assemblies are folded relative to the support rod assembly, each touch part is located between adjacent two support leg assemblies.

70. [Amended according to Rule 91, 24.10.2025] The multi-legged support of claim 58, wherein, The primary opening member is installed at the bottom end of the support rod assembly, in the state that the at least three support leg assemblies are folded relative to the support rod assembly, the pressure applying part protrudes from the bottom end of the support leg assembly.

71. [Amended according to Rule 91, 24.10.2025] The multi-legged support of claim 56, wherein, The primary opening member is installed at the bottom end of the support rod assembly, in the state that the at least three support leg assemblies are folded relative to the support rod assembly, the pressure applying part protrudes from the bottom end of the support leg assembly.

72. [Amended according to Rule 91, 24.10.2025] The multi-legged support of claim 41, wherein, When the at least three support leg assemblies are unfolded relative to the support rod assembly, the user can hold the sliding sleeve assembly and lift the sliding sleeve assembly to make the at least three support leg assemblies fold relative to the support rod assembly.

73. [Amended according to Rule 91, 24.10.2025] The multi-legged support of claim 72, wherein, In the state that the support leg assemblies are folded relative to the support rod assembly, the support leg assemblies and the connecting rod are magnetically attracted to each other; In the process of the user holding the sliding sleeve assembly and lifting the sliding sleeve assembly so that the at least three support leg assemblies are folded relative to the support rod assembly, the magnetic attraction of the magnetic attraction members to the corresponding connecting rods facilitates the folding of the at least three support leg assemblies relative to the support rod assembly, the weight of the support rod assembly and the weight of the support leg assemblies facilitate the folding of the at least three support leg assemblies relative to the support rod assembly, and the inertia of the support rod assembly and the inertia of the support leg assemblies facilitate the folding of the at least three support leg assemblies relative to the support rod assembly.

74. [Amended according to Rule 91, 24.10.2025] A terminal support device, characterized in that, The multi-leg support includes a support member for supporting an electronic terminal, and the multi-leg support of any one of claims 1-73.

75. [Amended according to Rule 91, 24.10.2025] A support foot articulation structure as part of a multi-foot stand, characterized in that, The support leg movable structure includes a support rod assembly, a sliding sleeve assembly, a support leg assembly, a connecting rod, and a preliminary opening member, 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, and 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 relative to the support rod assembly; in the state of being opened relative to the support rod assembly, the support leg assembly can be supported on a support surface; An external force applied to the preliminary opening member can make the preliminary opening member rotate relative to the support rod assembly, the preliminary opening member has a triggering part corresponding to the support leg assembly; In the process of the preliminary opening member rotating from the initial position to the second position, the triggering part triggers the corresponding support leg assembly to make the support leg assembly fold relative to the support rod assembly to the state of being preliminarily opened relative to the support rod assembly.

76. [Amended according to Rule 91, 24.10.2025] The support foot activity structure according to claim 75, characterized in that, The preliminary opening member can also move in the first direction relative to the support rod assembly, in the process of the external force being applied to the preliminary opening member, the preliminary opening member moves in the first direction relative to the support rod assembly, and the preliminary opening member rotates relative to the support rod assembly; The external force includes a force acting on the preliminary opening member and in the first direction, and / or the external force includes a rotational torque acting on the preliminary opening member and about the rotation axis of the preliminary opening member.

77. [Amended according to Rule 91 on 24.10.2025] The support foot activity structure according to claim 76, characterized in that, The preliminary opening member is provided with a first thread, the support rod assembly is provided with a second thread, the first thread cooperates with the second thread, and the rotation axis of the preliminary opening member is coaxial with the central axis of the first thread; In the process of the external force being applied to the preliminary opening member, the preliminary opening member rotates relative to the support rod assembly about the rotation axis, the preliminary opening member moves in the first direction relative to the support rod assembly, and the first direction is along the rotation axis. The external action includes an action force acting on the preliminary opening member and along the rotation axis, and / or the external action includes a rotation torque acting on the preliminary opening member and around the rotation axis.

78. [Amended according to Rule 91, 24.10.2025] The support foot mobile structure according to claim 77, characterized in that, The multi-leg support further comprises a reset spring acting on the preliminary opening member, the reset spring enabling the preliminary opening member to return from the second position to the initial position.

79. [Amended according to Rule 91, 24.10.2025] The support foot activity structure according to claim 78, characterized in that, The preliminary opening member has a mounting column, the first screw thread is arranged on the mounting column, the support rod assembly has a mounting cavity, the mounting column is mounted in the mounting cavity, a second screw thread is arranged on a cavity wall of the mounting cavity, the mounting column is provided with a receiving cavity, and the triggering portions are all connected to the mounting column. The mounting column has a first end face, the receiving cavity is communicated to the first end face, the mounting column has a first abutting wall, the first abutting wall is located in the mounting cavity, the support rod assembly has a second abutting wall, and the second abutting wall is located in the receiving cavity. The reset spring is a columnar spring or a tower-shaped spring, a first end of the reset spring is accommodated in the receiving cavity, the first end of the reset spring abuts against the first abutting wall, and a second end of the reset spring abuts against the second abutting wall. During rotation of the preliminary opening member from the initial position to the second position, the mounting column moves towards the second abutting wall, and the reset spring is compressed. In a state where the preliminary opening member is in the second position, the first end face abuts against the second abutting wall, and the reset spring is accommodated in the receiving cavity.

80. [Amended according to Rule 91, 24.10.2025] The support foot mobile structure according to claim 79, characterized in that, The preliminary opening member further comprises a connecting column connected to the mounting column, one end of the connecting column is accommodated in the receiving cavity, and the reset spring is sleeved on the connecting column. The support rod assembly has a retaining portion provided with the second abutting wall and a through hole, and the connecting column passes through the through hole. The multi-leg support further comprises a first fastener fastened to the connecting column, a first head of the first fastener is located on one side of the retaining portion, and a mounting column of the preliminary opening member is located on the other side of the retaining portion. During return of the preliminary opening member from the second position to the initial position, the reset spring acts on the preliminary opening member, and the first head of the first fastener moves towards the retaining portion. In a state where the preliminary opening member is in the initial position, the first head of the first fastener abuts against the retaining portion.

81. [Amended according to Rule 91 on 24.10.2025] The support foot activity structure according to claim 79, characterized in that, The support rod assembly comprises a support rod body and a mounting member mounted to the support rod body, each connecting rod is rotationally connected to the mounting member, the mounting cavity is arranged in the mounting member, and the mounting member has the second abutting wall. ​ 82. [Amended according to Rule 91, 24.10.2025] The support foot mobile structure according to claim 81, characterized in that, The preliminary opening piece further comprises a connecting column connected to the mounting column, one end of the connecting column is accommodated in the accommodating cavity, and the reset spring is sleeved on the connecting column; the mounting piece has a blocking part, the blocking part is provided with a through hole, the connecting column passes through the through hole, and the blocking part is provided with the second abutting wall; the multi-leg support further comprises a first fastener, the first fastener is fastened to the connecting column, and first heads of the first fastener are located on opposite sides of the blocking part, respectively. In the process that the preliminary opening piece returns from the second position to the initial position, the reset spring acts on the preliminary opening piece, and the first head of the first fastener moves towards the blocking part. In the state that the preliminary opening piece is in the initial position, the first head of the first fastener abuts against the blocking part.

83. [Amended according to Rule 91 on 24.10.2025] The support foot activity structure according to claim 81, characterized in that, The mounting piece is mounted at the bottom end of the support rod body, and the sliding sleeve assembly abuts against the mounting piece when the support leg assembly is opened to the maximum open state relative to the sliding sleeve assembly. The mounting piece comprises a mounting portion and a mounting protrusion connected to the mounting portion, each connecting rod is rotationally connected to the mounting protrusion of the mounting piece, and the mounting cavity is communicated to the mounting portion. The support rod body is provided with a mounting hole communicated to the bottom end thereof, the mounting portion is inserted into the mounting hole, and the support rod assembly further comprises a second fastener, the second fastener is fastened to the mounting portion through the support rod body. The sliding sleeve assembly has a sliding cavity which is slidably fitted with the support rod assembly, and an inner wall of the sliding cavity is provided with a sliding strip which extends along the sliding direction of the sliding cavity. An outer wall of the support rod body is concavely provided with a sliding groove which is fitted with the sliding strip, and the sliding strip slides in the sliding groove in the process that the sliding sleeve assembly slides along the extension direction of the support rod assembly. The second fastener comprises 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 is fastened to the mounting portion through the support rod body. In the state that the sliding sleeve assembly abuts against 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.

84. [Amended according to Rule 91 on 24.10.2025] The support foot activity structure according to claim 75, characterized in that, In the state that the support leg assembly is folded on the support rod assembly, the support leg assembly is subjected to a folding force which keeps the support leg assembly folded on the support rod assembly. In the process that the support leg assembly is folded relative to the support rod assembly and then is preliminarily opened relative to the support rod assembly, the folding force is weakened or is 0.

85. [Amended according to Rule 91 on 24.10.2025] The support foot activity structure according to claim 75, characterized in that, In the state that the support leg assembly is folded on the support rod assembly, the support leg assembly and the connecting rod are magnetically attracted to each other. In the process that the support leg assembly is folded relative to the support rod assembly and then is preliminarily opened relative to the support rod assembly, the attraction of the connecting rod to the support leg assembly is weakened or is 0.

86. [Amended according to Rule 91 on 24.10.2025] The support foot activity structure according to claim 75, characterized in that, The multi-leg support is used for supporting an electronic terminal or a shooting auxiliary article.

87. [Amended according to Rule 91 on 24.10.2025] The support foot activity structure according to claim 75, characterized in that, In the process that the support leg assembly is folded relative to the support rod assembly to be preliminarily opened relative to the support rod assembly, the sliding sleeve assembly slides in a second direction; When the support leg assembly is preliminarily opened relative to the support rod assembly and the second direction is along the direction of gravity, the dead weight of the moving assembly causes at least three support leg assemblies to be unfolded relative to the support rod assembly, the moving assembly comprising the sliding sleeve assembly, at least three support leg assemblies and at least three connecting rods.

88. [Amended according to Rule 91, 24.10.2025] A method of using a multi-legged stand, characterized in that, The use method comprises: providing the multi-leg support according to any one of the claims, at least three support leg assemblies of the multi-leg support being folded relative to a support rod assembly of the multi-leg support, a preliminary opening member of the multi-leg support being in an initial position, the preliminary opening member having a rotation adjusting part; applying a rotation torque to the preliminary opening member 500 by a user's arm around a rotation axis 501 thereof; applying a rotation torque to the preliminary opening member by the user's arm around the rotation axis thereof, so that the rotation adjusting part rotates around the rotation axis of the preliminary opening member, so that the preliminary opening member rotates from the initial position to a second position, so that at least three support leg assemblies are preliminarily opened relative to the support rod assembly; causing at least three support leg assemblies to be unfolded relative to the support rod assembly.

89. [Amended according to Rule 91, 24.10.2025] A support foot articulation structure as part of a multi-foot stand, 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 member, the sliding sleeve assembly being slidably 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, so that the support leg assembly can be opened or folded relative to the support rod assembly; in an initial state, the support leg assembly is kept in a state of being folded relative to the support rod assembly; in a state of being unfolded 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 member can cause the preliminary opening member to translate in a first direction relative to the support rod assembly, the preliminary opening member having a touch and push part corresponding to the support leg assembly; In the process that the preliminary opening member rotates from the initial position to a third position, the touch and push part touches and pushes the corresponding support leg assembly to cause the support leg assembly to be folded relative to the support rod assembly to be preliminarily opened relative to the support rod assembly.

90. [Amended according to Rule 91 24.10.2025] A method of using a multi-legged stand, characterized in that, The use method comprises: The multi-legged support of any one of claims, wherein at least three support leg assemblies of the multi-legged support are retracted into a support bar assembly of the multi-legged support, a preliminary opening member of the multi-legged support is in an initial position, the preliminary opening member has a rotation adjustment portion, the number of the support leg assemblies is three, the number of the touch portions is three, the rotation adjustment portion includes three adjustment pieces, the three adjustment pieces are centrally symmetric about an axis of rotation of the preliminary opening member, the three adjustment pieces are respectively connected to the three touch portions, and two adjacent adjustment pieces are force application spaces. Placing three fingers of a user in the three force application spaces, respectively. Rotating an arm of the user to apply a rotation torque about the axis of rotation of the preliminary opening member to the preliminary opening member, so that the rotation adjustment portion rotates about the axis of rotation of the preliminary opening member, and the preliminary opening member rotates from the initial position to a second position, so that at least three support leg assemblies are preliminarily opened relative to the support bar assembly. Opening at least three support leg assemblies relative to the support bar assembly.

91. [Amended according to Rule 91 24.10.2025] The method of using a multi-legged stand according to claim 90, characterized in that, During the process in which the at least three support leg assemblies are retracted to be preliminarily opened relative to the support bar assembly, the sliding sleeve assembly slides in a second direction. The step of opening the at least three support leg assemblies relative to the support bar assembly includes the following steps:

92. [Amended according to Rule 91, 24.10.2025] A method of using a multi-legged stand, characterized in that, The use method includes the following steps: The multi-legged support of claim, wherein at least three support leg assemblies of the multi-legged support are retracted into a support bar assembly of the multi-legged support, a preliminary opening member of the multi-legged support is in an initial position, and the preliminary opening member has a pressure application portion. Applying pressure to the pressure application portion in a first direction to make the preliminary opening member translate in the first direction, so that the preliminary opening member rotates relative to the support bar assembly, and at least three support leg assemblies are preliminarily opened relative to the support bar assembly. Opening at least three support leg assemblies relative to the support bar assembly.

93. [Amended according to Rule 91 on 24.10.2025] The method of using a multi-legged stand according to claim 92, characterized in that, During the process in which the at least three support leg assemblies are retracted to be preliminarily opened relative to the support bar assembly, the sliding sleeve assembly slides in a second direction. The step of opening the at least three support leg assemblies relative to the support bar assembly includes the following steps: The step of opening the at least three support leg assemblies relative to the support bar assembly includes the following steps: The use method of claim 92, wherein The slide sleeve assembly slides in a second direction during the process of changing from the at least three support leg assemblies being folded relative to the support rod assembly to the at least three support leg assemblies being preliminarily opened relative to the support rod assembly; The step of applying pressure to the pressure applying part in the first direction to make the preliminarily opening part translate in the first direction includes: The pressure applying part of the preliminarily opening part impacts the support surface in a second direction to make the preliminarily opening part translate in a first direction relative to the support rod assembly, the second direction being along the direction of gravity; The step of making the at least three support leg assemblies spread relative to the support rod assembly includes: The self-weight and inertia of the moving assembly make the at least three support leg assemblies spread relative to the support rod assembly, the moving assembly including the slide sleeve assembly, the at least three support leg assemblies and the at least three connecting rods of the multi-leg support, the inertia of the moving assembly including the inertia of the moving assembly keeping moving in the second direction during the process of the pressure applying part impacting the support surface in the second direction.

95. [Amended according to Rule 91, 24.10.2025] A method of using a multi-legged stand, characterized in that, The use method includes: Providing the multi-leg support of claim, the at least three support leg assemblies of the multi-leg support being folded relative to the support rod assembly of the multi-leg support, the preliminarily opening part of the multi-leg support being in an initial position; Making the at least three support leg assemblies preliminarily open relative to the support rod assembly; Making the at least three support leg assemblies spread relative to the support rod assembly.

96. [Amended according to Rule 91 on 24.10.2025] The method of using a multi-legged stand according to claim 95, characterized in that, The slide sleeve assembly slides in a second direction during the process of changing from the at least three support leg assemblies being folded relative to the support rod assembly to the at least three support leg assemblies being preliminarily opened relative to the support rod assembly; The step of making the at least three support leg assemblies spread relative to the support rod assembly includes: The step of making the at least three support leg assemblies spread relative to the support rod assembly includes making the second direction along the direction of gravity, the self-weight of the moving assembly making the at least three support leg assemblies spread relative to the support rod assembly, the moving assembly including the slide sleeve assembly, the at least three support leg assemblies and the at least three connecting rods. 97.[According to Rule 91 Correction 24.10.2025] The use method of the multi-leg support of claim 95, characterized in that, The slide sleeve assembly slides in a second direction during the process of changing from the at least three support leg assemblies being folded relative to the support rod assembly to the at least three support leg assemblies being preliminarily opened relative to the support rod assembly; The step of applying pressure to the pressure applying part in the first direction to make the preliminarily opening part translate in the first direction includes: The pressure applying part of the preliminarily opening part impacts the support surface in a second direction to make the preliminarily opening part translate in a first direction relative to the support rod assembly, the second direction being along the direction of gravity; The step of making the at least three support leg assemblies spread relative to the support rod assembly includes: The self-weight and inertia of the moving assembly, which includes the sliding sleeve assembly, the at least three support leg assemblies and the at least three connecting rods of the multi-leg support, cause the at least three support leg assemblies to spread apart relative to the support rod assembly, and the inertia of the moving assembly includes the inertia of the moving assembly to keep moving in the second direction during the process that the initial opening member or the force member hits the support surface in the second direction.

98. [Amended according to Rule 91 24.10.2025] The method of using a multi-legged support according to claim 95, characterized in that, The use method further includes the steps of: When the at least three support leg assemblies spread apart relative to the support rod assembly, the user holding the sliding sleeve assembly and lifting the sliding sleeve assembly can cause the at least three support leg assemblies to fold in relative to the support rod assembly.

99. [Amended according to Rule 91 on 24.10.2025] The method of using a multi-legged stand according to claim 98, characterized in that, In the state that the support leg assemblies fold in the support rod assembly, the support leg assemblies and the connecting rods are magnetically attracted to each other; During the process that the user holding the sliding sleeve assembly and lifting the sliding sleeve assembly causes the at least three support leg assemblies to fold in relative to the support rod assembly, the magnetic attraction of the magnetic attraction member to the corresponding connecting rod promotes the at least three support leg assemblies to fold in the support rod assembly, the self-weight of the support rod assembly and the self-weight of the support leg assemblies promote the at least three support leg assemblies to fold in the support rod assembly, and the inertia of the support rod assembly and the inertia of the support leg assemblies promote the at least three support leg assemblies to fold in the support rod assembly; the moving assembly includes the support rod assembly and the support leg assemblies.

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