Multi-foot support

Abstract

A multi-foot support. The multi-foot support comprises a support rod assembly (100), a sliding sleeve assembly (200), a connecting assembly (400), at least three support foot assemblies (300), and a preliminary opening assembly (500). The preliminary opening assembly (500) is configured to overcome a folding force and push open the at least three support foot assemblies (300) when an external action is applied to a force-bearing portion thereof, so that the at least three support foot assemblies (300) change from being folded to a preliminary opening state. The multi-foot support is more conducive to the spreading of the support foot assemblies (300) relative to the support rod assembly (100), thereby reducing the difficulty of opening the multi-foot support.

Description

Multi-leg support

[0001] This application claims priority to:

[0002] Chinese Patent Application No. 2025110067379, entitled "A multi-leg support", filed on July 21, 2025; Chinese Patent Application No. 2025109606617, entitled "A multi-leg support and an electronic terminal support device", filed on July 11, 2025; Chinese Patent Application No. 2024112802562, entitled "A multi-leg support and an electronic terminal support device", filed on September 12, 2024; Chinese Patent Application No. 2024110645088, entitled "Multi-leg support, electronic terminal support, and method for using multi-leg support", filed on August 5, 2024; Chinese Patent Application No. 2024110663245, entitled "A support leg movable knot", filed on August 5, 2024; and the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of auxiliary supplies for electronic terminals and the like, and in particular to a multi-leg support. BACKGROUND

[0004] With the popularity of mobile imaging technologies (such as short video shooting, live streaming, time-lapse photography, etc.), multi-leg supports such as three-legged supports and four-legged supports have become the core tools for users to achieve shooting. According to the classification of shooting devices, multi-leg supports can be divided into multi-leg supports for mobile phones and multi-leg supports for cameras, etc.

[0005] The current multi-leg support generally includes a support rod assembly, at least three support leg assemblies, etc. The current multi-leg support generally relies on a buckle structure for folding the support leg assemblies, so that the user needs to operate with both hands: one hand holds the support rod assembly and other components of the three-legged support, and the other hand pries open the support leg assemblies to expand the support leg assemblies. In this way, it is very inconvenient to expand the support leg assemblies of the multi-leg support.

[0006] The above content is only used to assist in understanding the technical solutions of the application and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0007] In view of the above problems, the present application provides a multi-leg support, which aims to solve the technical problem of inconvenient expansion operation of the support leg assemblies of the existing multi-leg support.

[0008] To solve the above technical problems, the application provides a multi-leg support, which comprises a support rod assembly, a sliding sleeve assembly, a connecting assembly and at least three support leg assemblies, the support rod assembly extends in a length direction, the sliding sleeve assembly is slidably sleeved on the periphery of the support rod assembly in the length direction of the support rod assembly, the support leg assemblies are rotatably connected to the sliding sleeve assembly, the connecting assembly rotatably connects the support leg assemblies and the support rod assembly, and the connecting assembly is configured to link and open or fold at least three support leg assemblies when the sliding sleeve assembly slides relative to the support rod assembly; wherein, in the state that the at least three support leg assemblies are folded on the support rod assembly, the support leg assemblies are subjected to a folding force to keep the support leg assemblies folded on the support rod assembly; the multi-leg support further comprises a preliminary opening assembly, the preliminary opening assembly is movably connected to the support rod assembly; the preliminary opening assembly is configured to overcome the folding force and push open the at least three support leg assemblies when an external action is applied thereto, so that the at least three support leg assemblies change from the folding state to a preliminary opening state relative to the support rod assembly.

[0009] The multi-leg support provided by the application has the advantages that the preliminary opening assembly can convert the external action applied thereto into the action force for pushing open the at least three support leg assemblies, so that the preliminary opening of the at least three support leg assemblies is realized, and the subsequent automatic opening of the at least three support leg assemblies is more convenient.

[0010] In an embodiment, when the at least three support leg assemblies are in the preliminary opening state relative to the support rod assembly, the self-weight of the moving assembly can promote the sliding of the sliding sleeve assembly, so that the at least three support leg assemblies are opened relative to the support rod assembly; the moving assembly comprises the sliding sleeve assembly, the at least three support leg assemblies and the connecting assembly; the sliding sleeve assembly comprises a hand holding part configured to allow the top end of the support rod assembly to extend out, and the support leg assemblies are rotatably connected to the hand holding part.

[0011] The at least three support leg assemblies are configured to be folded when the user lifts the hand holding part, and are folded on the support rod assembly by the folding force.

[0012] The multi-leg support provided by the application has the advantages that the preliminary opening assembly can convert the external action applied thereto into the action force for pushing open the at least three support leg assemblies, so that the preliminary opening of the at least three support leg assemblies is realized, and the subsequent automatic opening of the at least three support leg assemblies is more convenient.

[0013] The application also provides a multi-leg support, which comprises a support rod assembly, a sliding sleeve assembly, a connecting assembly and at least three support leg assemblies, the support rod assembly extends along a length direction, the sliding sleeve assembly is slidably sleeved on the periphery of the support rod assembly along the length direction of the support rod assembly, the support leg assemblies are rotatably connected to the sliding sleeve assembly, the connecting assembly rotatably connects the support leg assemblies and the support rod assembly, and the connecting assembly is configured to drive the at least three support leg assemblies to be opened or folded when the sliding sleeve assembly slides relative to the support rod assembly; wherein, in the state that the at least three support leg assemblies are folded on the support rod assembly, the support leg assemblies are subjected to a folding force to keep the support leg assemblies folded on the support rod assembly; the sliding sleeve assembly comprises a hand-held part configured to allow the top end of the support rod assembly to extend out, and the support leg assemblies are rotatably connected to the hand-held part; the multi-leg support further comprises a preliminary opening assembly, the preliminary opening assembly is movably connected to the support rod assembly, and the preliminary opening assembly has a force receiving part; the preliminary opening assembly is configured to overcome the folding force and push open the at least three support leg assemblies when an external force is applied to the force receiving part, so that the at least three support leg assemblies change from the folded state to a preliminary opening state relative to the support rod assembly; when the at least three support leg assemblies are in the preliminary opening state relative to the support rod assembly, the sliding sleeve assembly can slide under the action of the weight of the moving assembly, so that the at least three support leg assemblies are opened relative to the support rod assembly, and the moving assembly comprises the sliding sleeve assembly, the at least three support leg assemblies and the connecting assembly; the at least three support leg assemblies are configured to be folded relative to the support rod assembly and folded on the support rod assembly by the folding force when a user lifts the hand-held part.

[0014] The multi-leg support provided by the application has the advantages that the hand-held part is arranged on the sliding sleeve assembly, and the preliminary opening assembly is arranged to have a force receiving part protruding to the bottom end of the support leg assembly in the folded state, and the preliminary opening assembly can convert the external force applied to the force receiving part into a force to push open the at least three support leg assemblies, so as to realize the preliminary opening of the at least three support leg assemblies, thereby facilitating the subsequent automatic opening of the at least three support leg assemblies.

[0015] In addition, after the support leg assemblies are initially opened, automatic opening of the at least three support leg assemblies can be achieved by gravity, and when the multi-leg support needs to be folded, the user only needs to hold the hand-held portion with one hand and lift it upward, so that the at least three support leg assemblies can be automatically folded under the action of gravity and inertia and kept folded on the support rod assembly by the folding force. That is, after the support leg assemblies are initially opened, the user can open or fold the multi-leg support by one-handed operation, greatly simplifying the opening or folding steps of the multi-leg support, reducing the difficulty of opening or folding operation of the multi-leg support, and greatly improving the opening operation convenience of the multi-leg support. In some cases, in the folded state of the multi-leg support, the user holds the hand-held portion with one hand and applies an external force to the force application portion in the form of impact or the like, so that the support leg assemblies can be initially opened, that is, the initial opening of the support leg assemblies can be achieved by one-handed operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0017] FIG. 1 shows a structural schematic view of an embodiment of the multi-leg support of the present application, wherein the at least three support leg assemblies are in a folded state;

[0018] FIG. 2 is a structural schematic view of the multi-leg support of FIG. 1 from another angle;

[0019] FIG. 3 is an enlarged view of portion A in FIG. 2;

[0020] FIG. 4 is a bottom view of the multi-leg support of FIG. 1;

[0021] FIG. 5 is a sectional view along line I-I in FIG. 4;

[0022] FIG. 6 is an enlarged view of portion B in FIG. 5;

[0023] FIG. 7 is a structural schematic view of a preliminary opening assembly of the multi-leg support shown in FIG. 4;

[0024] FIG. 8 is a structural schematic view of the preliminary opening assembly of FIG. 7 from another angle;

[0025] FIG. 9 is a structural schematic view of a mounting member of the multi-leg support shown in FIG. 5;

[0026] FIG. 10 is a structural schematic view of the mounting member of FIG. 9 from another angle;

[0027] FIG. 11 is an exploded schematic view of the preliminary opening assembly, the mounting member, and the elastic member of the multi-leg support shown in FIG. 2;

[0028] Fig. 12 is a structural schematic view of the multi-legged support shown in Fig. 1 with at least three of the support leg assemblies in a preliminary open state;

[0029] Fig. 13 is a structural schematic view of the multi-legged support shown in Fig. 12 from another angle;

[0030] Fig. 14 is an enlarged view of the area C in Fig. 13;

[0031] Fig. 15 is a cross-sectional view of the multi-legged support shown in Fig. 12 along a section line;

[0032] Fig. 16 is an enlarged view of the area D in Fig. 15;

[0033] Fig. 17 is a cross-sectional view of the multi-legged support shown in Fig. 12 with at least three of the support leg assemblies in an open state;

[0034] Fig. 18 is an enlarged view of the area E in Fig. 17;

[0035] Fig. 19 is a structural schematic view of a sleeve assembly of the multi-legged support shown in Fig. 12;

[0036] Fig. 20 is a structural schematic view of a support leg assembly of the multi-legged support shown in Fig. 12;

[0037] Fig. 21 is an enlarged view of the area F in Fig. 20;

[0038] Fig. 22 is an enlarged view of the area G in Fig. 20;

[0039] Fig. 23 is an enlarged view of the area H in Fig. 20;

[0040] Fig. 24 is a structural schematic view of a connecting rod of the multi-legged support shown in Fig. 12;

[0041] Fig. 25 is a structural schematic view of the multi-legged support shown in Fig. 1 after installation of a support member, with at least three of the support leg assemblies in an open state;

[0042] Fig. 26 is a structural schematic view of another embodiment of the multi-legged support of the present application, with at least three of the support leg assemblies in a collapsed state;

[0043] Fig. 27 is a structural schematic view of the multi-legged support shown in Fig. 26 with at least three of the support leg assemblies in a preliminary open state;

[0044] Fig. 28 is an enlarged view of the area I in Fig. 27;

[0045] Fig. 29 is an assembly view of the mounting member and the preliminary opening assembly of the multi-legged support shown in Fig. 27;

[0046] Fig. 30 is a cross-sectional view of the structure shown in Fig. 29 along a section line;

[0047] Fig. 31 is an assembly view of the mounting member and the preliminary opening assembly in another embodiment of the multi-leg support of the present application;

[0048] Fig. 32 is a top view of the structure shown in Fig. 31;

[0049] Fig. 33 is a sectional view taken along line II-II in Fig. 32;

[0050] Fig. 34 is an exploded view of the structure shown in Fig. 31;

[0051] Fig. 35 is a structural view of the preliminary opening assembly shown in Fig. 31;

[0052] Fig. 36 is a structural view of the mounting member shown in Fig. 31;

[0053] Fig. 37 is a structural view of the mounting member shown in Fig. 36 from another angle;

[0054] Fig. 38 is a structural view of the actuating member of the preliminary opening assembly shown in Fig. 35;

[0055] Fig. 39 is a view of the actuating member shown in Fig. 38 from another angle;

[0056] Fig. 40 is a structural view of the movable member of the preliminary opening assembly shown in Fig. 35;

[0057] Fig. 41 is a structural view of the structure shown in Fig. 31 applied to a multi-leg support, wherein at least three support leg assemblies are in the collapsed state;

[0058] Explanation of reference numerals: support rod assembly 100, guide slot 110, support rod body 120, mounting member 130, abutting table 131, first mounting portion 132, second mounting portion 133, connecting notch 140, sliding sleeve assembly 200, hand holding portion 210, positioning cylinder 220, rotating notch 230, support leg assembly 300, contact surface 310, rotating space 320, magnetic attraction body 330, anti-pinch slot 340, positioning slot 350, positioning protrusion 360, rotating protrusion 370, anti-slip pad 380, connecting portion 390, connecting assembly 400, connecting rod 410, preliminary opening assembly 500, force applying portion 510, actuating portion 520, movable member 530, guide portion 531, protrusion 532, actuating member 540, rotating portion 541, force applying member 550, elastic member 600, bearing member 700, the implementation of the object of the present application, the functional features and advantages will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0059] With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of the present application.

[0060] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0061] In addition, the technical solutions among various embodiments can be combined with each other, but it must be based on that a person of ordinary skill in the art can realize, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0062] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, if the certain posture changes, the directional indications also change accordingly.

[0063] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature can be above or obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature can be below or obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0064] Unless otherwise defined, the terms "mounting", "connected", "connecting", "fixed", and "fixedly" are to be construed as broad terms, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection, or communication with each other; it can be direct connection, or indirect connection through intermediate medium; it can be internal communication of two elements or interaction relationship of two elements, unless otherwise defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0065] In addition, if the present application has a description of "first", "second" and the like, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B scheme.

[0066] The multi-leg support can be applied to electronic terminals, shooting devices, observation devices, measuring devices, etc. For example, the multi-leg support can be used to support and fix mobile phones, cameras, video cameras, telescopes, surveying instruments and other devices that need to provide stable support. After the multi-leg support is opened, a stable geometric structure is formed with the ground, which can provide a stable support platform for the above-mentioned devices to meet the precise operation requirements in different scenes.

[0067] In the embodiments of the present application, please refer to FIGS. 1-6, 12-17, 25-28, 41, etc. The multi-leg support includes a support rod assembly 100, a sliding sleeve assembly 200, a connecting assembly 400 and at least three support leg assemblies 300. The support rod assembly 100 extends along its length direction. The sliding sleeve assembly 200 is slidably sleeved on the periphery of the support rod assembly 100 along the length direction of the support rod assembly 100. The support leg assembly 300 is rotatably connected to the sliding sleeve assembly 200. The connecting assembly 400 rotatably connects the support leg assembly 300 and the support rod assembly 100. The connecting assembly 400 is configured to link and open or fold at least three support leg assemblies 300 when the sliding sleeve assembly 200 slides relative to the support rod assembly 100.

[0068] The number of support leg assemblies 300 can be selected and designed according to actual needs, for example, the support leg assemblies 300 can be provided as three, four, five, etc., to form a tripod, a quadruped, a pentapod, etc., as long as the number of support leg assemblies 300 provided is greater than three. In this case, the number of support leg assemblies 300 is not specifically limited. Generally, the shapes and sizes of at least three support leg assemblies 300 are substantially the same, so as to reduce costs and improve aesthetics.

[0069] For example, in the state that the at least three support leg assemblies 300 are folded relative to the support rod assembly 100, the at least three support leg assemblies 300 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 assemblies to take a selfie. In some cases, in the state that the at least three support leg assemblies 300 are folded relative to the support rod assembly 100, the connecting rod 400 is folded on 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.

[0070] When the multi-legged support is applied to a mobile phone, the multi-legged support can also be provided as a remote control selfie stick structure. For example, a mounting groove for accommodating a Bluetooth remote control can be provided on one of the support leg assemblies 300. The Bluetooth remote control can be fixedly installed in the mounting groove or detachably installed in the mounting groove. In this way, the user can control the shooting of the mobile phone through the Bluetooth remote control, so as to enrich the use scenarios of the multi-legged support.

[0071] For example only, the sleeve assembly 200, the support rod assembly 100, the support leg assembly 300, and the corresponding connecting assembly 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. In the process that the support leg assembly 300 is changed from being folded to being unfolded relative to the support rod assembly 100, the 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 sleeve assembly 200 is located at different positions of the support rod assembly 100.

[0072] The support rod assembly 100 extends in the longitudinal direction, provides positioning and guidance for the sliding of the sleeve assembly 200, and can improve the stability of the entire multi-legged support. Generally, the cross section of the support rod assembly 100 is circular to ensure the smoothness of the sliding of the sleeve assembly 200. In an example, the support rod assembly 100 is provided as a telescopic rod to meet the different support height requirements of the user and improve the versatility of the product. In some embodiments, the support rod assembly 100 can also be provided as a fixed length. For example, the support rod assembly 100 includes a plurality of telescopic sections, and the plurality of telescopic sections include a first telescopic section, and the sleeve assembly 200 is sleeved on the first telescopic section.

[0073] For example only, the support pole assembly 100 has a central axis a-a extending along a length direction thereof, and the sliding sleeve assembly 200 is slidably sleeved on an outer periphery of the support pole assembly 100 along the central axis a-a.

[0074] The inner periphery wall of the sliding sleeve assembly 200 and the outer periphery wall of the support pole assembly 100 can be arranged with a gap, so that the friction between the support pole assembly 100 and the sliding sleeve assembly 200 is smaller or close to 0, to realize the relative sliding between the sliding sleeve assembly 200 and the support pole assembly 100. In an example, rolling elements are arranged between the inner periphery wall of the sliding sleeve assembly 200 and the outer periphery wall of the support pole assembly 100. For example, the rolling elements can be balls, rolling bearings or the like, which can reduce the friction while ensuring smooth sliding of the sliding sleeve assembly and the support pole assembly 100. In order to ensure overall consistency, generally, the sliding sleeve assembly 200 has a circular cross section.

[0075] Specifically, the support leg assemblies 300 are hingedly arranged with the sliding sleeve assembly 200. For example, a rotating protrusion 370 can be arranged on a top of the support leg assembly 300, and a rotating notch 230 is arranged on the sliding sleeve assembly 200, so that the rotating protrusion 370 is hingedly connected to the rotating notch 230 through a rotating shaft or a lug. Of course, the support leg assembly 300 and the sliding sleeve assembly 200 can also be connected in other ways, which are not limited herein, for example, the support leg assembly 300 is provided with the rotating notch 230, and the sliding sleeve assembly 200 is provided with the rotating protrusion 370.

[0076] The connecting assembly 400 can be at least three connecting rods or other connecting structures that can be spread or contracted relative to the support pole assembly 100; for example, the connecting assembly 400 is a non-rod structure. By arranging the tensioning structure, when the sliding sleeve assembly 200 slides in the second direction, the connecting assembly 400 can be linked and synchronously spread at least three support leg assemblies 300, and when the at least three support leg assemblies 300 are in the spread state, the at least three support leg assemblies 300 can be supported on the same support surface. The support surface can be the ground, a table top or the like. When the sliding sleeve assembly 200 slides in the opposite direction of the second direction, the connecting assembly 400 can be linked and synchronously contracted at least three support leg assemblies 300. For example only, the second direction is along the direction of the support pole assembly from the top end to the bottom end thereof.

[0077] In some embodiments, referring again to Figs. 1-6, 12-17, 25-28, 41, etc., in the state that the at least three support leg assemblies 300 are collapsed on the support pole assembly 100, the support leg assemblies 300 are subjected to a collapsing force that keeps them collapsed on the support pole assembly 100; the multi-legged stand further comprises a preliminary opening assembly 500 that is movably connected to the support pole assembly 100; the preliminary opening assembly 500 is configured to, when subjected to an external action, overcome the collapsing force and push open the at least three support leg assemblies 300, so that the at least three support leg assemblies 300 change from the collapsed state to a preliminary opened state relative to the support pole assembly 100.

[0078] For example, during the process of carrying the multi-legged stand, the support leg assemblies 300 are kept in a stable collapsed state relative to the support pole assembly 100, and the support leg assemblies 300 cannot be spread apart relative to the support pole assembly 100, for example, the support leg assemblies 300 are not spread apart relative to the support pole assembly 100 due to their own weight.

[0079] In a common case, in the state that the at least three support leg assemblies 300 are preliminarily opened relative to the support pole assembly 100, the at least three support leg assemblies 300 are further opened relative to the support pole assembly 100, so that the at least three support leg assemblies 300 are spread apart relative to the support pole assembly 100, so that the at least three support leg assemblies 300 can be supported on a support surface. In another uncommon case, the state that the at least three support leg assemblies 300 are preliminarily opened relative to the support pole assembly 100 belongs to the state that the at least three support leg assemblies 300 are spread apart relative to the support pole assembly 100, that is, in the state that the at least three support leg assemblies 300 are preliminarily opened relative to the support pole assembly 100, the at least three support leg assemblies 300 can be supported on a support surface.

[0080] The type of the collapsing force that keeps the support leg assemblies 300 collapsed on the support pole assembly 100 can be various, for example, the collapsing force can be a clamping force, a magnetic attraction force, an adhesive force, a vacuum suction force, etc. The collapsing force that the support leg assemblies 300 are subjected to can be partially or entirely derived from the connecting assembly 400, the support pole assembly 100, or the sliding sleeve assembly 200. That is, the support leg assemblies 300 can be clamped, magnetically attracted, adhesively bonded, or vacuum suction connected with at least one of the connecting assembly 400, the support pole assembly 100, or the sliding sleeve assembly 200. So that the support leg assemblies 300 are stably kept in the collapsed state on the support pole assembly 100 by the collapsing force. Then the at least three support leg assemblies 300 can be prevented from being spread apart during the process of carrying or placing the multi-legged stand.

[0081] In one case, the folding of the at least three support leg assemblies 300 relative to the support pole assembly 100 into the preliminary opening of the at least three support leg assemblies 300 relative to the support pole assembly 100 is accompanied by a decrease or absence of folding force on the support leg assemblies 300, so that the support leg assemblies 300 are easily spread apart relative to the support pole assembly 100, and thus are in a spread apart state relative to the support pole assembly 100.

[0082] In other cases, the folding of the at least three support leg assemblies 300 relative to the support pole assembly 100 into the preliminary opening of the at least three support leg assemblies 300 relative to the support pole assembly 100 is accompanied by no change in folding force on the support leg assemblies 300, but because of the preliminary opening of the at least three support leg assemblies 300 relative to the support pole assembly 100, it is convenient for the user to further spread apart the at least three support leg assemblies 300 relative to the support pole assembly 100 using hands or external tools, thereby facilitating the spread apart of the at least three support leg assemblies 300 relative to the support pole assembly 100.

[0083] For better illustration, the present application takes the orientation of the multi-leg support in actual use as a reference, and exemplarily, when the multi-leg support is placed on the ground for use, the top end of a part is the end away from the ground, and the bottom end of the part is the end close to the ground.

[0084] The connection mode of the preliminary opening assembly 500 and the support pole assembly 100 can be sliding connection, screw pair connection, rotary connection, cam pair connection, etc.; the connection mode of the preliminary opening assembly 500 and the support pole assembly 100 can also be that the first part of the preliminary opening assembly 500 is in sliding connection with the support pole assembly 100, and the second part is in rotary connection with the support pole assembly 100, wherein the first part is configured to be subjected to external action, and the second part is configured to open the at least three support leg assemblies, and the two parts of the preliminary opening assembly 500 are connected through a connection mode that can convert linear motion into rotary motion, such as screw pair, cam pair, gear rack, crank slider, etc.; the connection mode of the preliminary opening assembly 500 and the support pole assembly 100 can also be that the first part of the preliminary opening assembly 500 is in rotary connection with the support pole assembly 100, and the second part is in sliding connection with the support pole assembly 100, wherein the first part is configured to be subjected to external action, and the second part is configured to open the at least three support leg assemblies, and the two parts of the preliminary opening assembly 500 are connected through a connection mode that can convert rotary motion into linear motion, such as crank slider mechanism, cam pair, gear rack, screw pair, etc.

[0085] The movement mode of the preliminary opening assembly 500 relative to the support rod assembly 100 can be rotation, sliding, a combination of rotation and sliding, etc. The rotation of the preliminary opening assembly 500 relative to the support rod assembly 100 means that at least one sub-movement of the preliminary opening assembly 500 is the rotation thereof relative to the support rod assembly 100. The sliding of the preliminary opening assembly 500 relative to the support rod assembly 100 means that at least one sub-movement of the preliminary opening assembly 500 is the sliding thereof relative to the support rod assembly 100.

[0086] In some implementations, the preliminary opening assembly 500 and the support rod assembly 100 are connected through a cam pair. During the movement of the preliminary opening assembly 500 relative to the support rod assembly 100, the preliminary opening assembly 500 moves translationally relative to the support rod assembly 100 and rotates relative to the support rod assembly 100. Specifically, the support rod assembly 100 has a connecting protrusion, and the preliminary opening assembly 500 has a connecting groove (or the support rod assembly 100 has a connecting groove, and the preliminary opening assembly 500 has a connecting protrusion). The connecting protrusion and the connecting groove are matched, the connecting protrusion and the connecting groove combine to form a cam pair, and the connecting protrusion slides or rolls in the connecting groove, so that the preliminary opening assembly 500 moves translationally relative to the support rod assembly 100 and rotates 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. External action is required to overcome the resistance (including the frictional resistance between the connecting protrusion and the connecting groove) that the preliminary opening assembly 500 receives, so that the connecting protrusion slides or rolls along the connecting groove.

[0087] Further, during the translation of the preliminary opening assembly 500 relative to the support rod assembly 100 in the first direction and the rotation of the preliminary opening assembly 500 relative to the support rod assembly 100, the translation of the preliminary opening assembly 500 relative to the support rod assembly 100 in the first direction assists the preliminary opening of the support leg assembly 300.

[0088] The structure of the preliminary opening assembly 500 can be various. It should be noted that the preliminary opening assembly 500 is movably connected to the support rod assembly 100 in the present application. When the preliminary opening assembly 500 is an integral structure, the entire preliminary opening assembly 500 moves relative to the support rod assembly 100 to open the support leg assembly 300. When the preliminary opening assembly 500 is composed of multiple components, only part of the preliminary opening assembly 500 can move relative to the support rod assembly 100 to open the support leg assembly 300.

[0089] It can be understood that the external action includes an acting force in the first direction, the acting force in the first direction includes a pushing force for pushing the preliminary opening assembly 500, or the acting force in the first direction includes a pulling force for pulling the preliminary opening assembly 500 in the sliding direction, or the external action includes a torque around the rotation axis of the preliminary opening assembly. Specifically, the external action is embodied as a pressing force, a pulling force, a rotation torque, etc. directly applied to the preliminary opening assembly 500 by the user; or the external action is embodied as a pressing force, an impact force, etc. directly applied to the preliminary opening assembly 500 by the supporting surface. The external action can be a pressing or impact of the supporting surface on the preliminary opening assembly 500. It can be understood that the external action includes an acting force acting on the preliminary opening assembly 500 and in the first direction, and / or the external action includes a rotation torque acting on the preliminary opening assembly 500 and around the rotation axis 501 thereof. It can be understood that in the case where the external action includes an acting force acting on the preliminary opening assembly 500 and in the first direction, the whole or partial force of the external action is an acting force for pushing the preliminary opening assembly 500 in the first direction; in the case where the external action includes a rotation torque acting on the preliminary opening assembly 500 and around the rotation axis 501 thereof, the whole or partial torque of the external action is a torque around the rotation axis.

[0090] A common scenario is that, with reference to FIGS. 1-25, 26-30, etc., the user holds the sliding sleeve assembly 200 or the support rod assembly 100, and the preliminary opening assembly 500 of the multi-leg support is pressed or impacted against the ground or other table surface, and the external action is the reaction force of the ground or other table surface, etc. on the preliminary opening assembly 500; in this scenario, the user holds the hand-held portion 210, and presses or impacts the preliminary opening assembly 500 of the multi-leg support against the ground, and the reaction force of the ground acts on the preliminary opening assembly 500, so that part or all of the structure of the preliminary opening assembly 500 moves upward, at this time, the preliminary opening assembly 500 can directly push open at least three support leg assemblies 300 against the folding force, so that the at least three support leg assemblies 300 change from the folded state to the preliminary opening state relative to the support rod assembly 100.

[0091] Another common scenario is that, with reference to FIGS. 1-25, 26-30, 31-41, etc., one hand of the user holds the sliding sleeve assembly 200 or the support rod assembly 100, and the other hand of the user presses or rotates the preliminary opening assembly, and the external action can be embodied as a pressing force or a rotation torque applied to the preliminary opening assembly 500 by the user.

[0092] It should be noted that the magnitude of the external action required to be applied to the preliminary opening assembly 500 to open the at least three support leg assemblies 300 can be designed according to the magnitude of the folding force experienced by the at least three support leg assemblies 300. In other words, the magnitude of the external action can be designed by designing the magnitude of the folding force experienced by the at least three support leg assemblies 300 and the specific structure of the at least three support leg assemblies 300 folding to the support rod assembly 100. The magnitude of the folding force and the magnitude of the external action are not specifically limited herein, as long as the preliminary opening assembly 500 can overcome the folding force to open the at least three support leg assemblies 300 after the external action is applied to the preliminary opening assembly 500.

[0093] The manner in which the preliminary opening assembly 500 opens the at least three support leg assemblies 300 can be various, for example, the preliminary opening assembly 500 can be rotated about its rotation axis to open the at least three support leg assemblies 300; for example, the preliminary opening assembly 500 can slide in the first direction to open the at least three support leg assemblies 300, and a specific implementation is to provide an inclined contact surface on the support leg assembly 300, so that the preliminary opening assembly 500 gradually moves upward along the contact surface to gradually open the at least three support leg assemblies 300, for example, the outer normal direction of the contact surface is greater than 90° with the first direction. For example, a part of the preliminary opening assembly 500 can be slidingly connected relative to the support rod assembly 100, and a part thereof can be rotated about its rotation axis to preliminarily open the at least three support leg assemblies 300.

[0094] For example only, in the case that the preliminary opening assembly 500 (or a part of the preliminary opening assembly) rotates relative to the support rod assembly 100 about the rotation axis, the rotation axis is along the length direction of the support rod assembly; in the case that the preliminary opening assembly 500 (or a part of the preliminary opening assembly 500) slides in the first direction, the first direction is along the length direction of the support rod assembly.

[0095] The at least three support leg assemblies 300 are opened by the preliminary opening assembly 500, that is, the preliminary opening assembly 500 can convert the external action applied thereby into an opening force to open the at least three support leg assemblies 300. In this way, the at least three support leg assemblies 300 can be preliminarily opened by the preliminary opening assembly 500, so that the at least three support leg assemblies 300 can be more conveniently automatically opened by the weight and inertia of the moving assembly. Compared with the way of manually opening the support leg assemblies to release the engagement of the at least three support leg assemblies 300 to make the at least three support leg assemblies 300 naturally open, the at least three support leg assemblies 300 can be more smoothly opened.

[0096] In an example, as shown in FIGS. 12-16, 27, 28, during the process that the at least three support leg assemblies 300 change from the collapsed state to the preliminary open state, the angle at which the support leg assemblies 300 rotate relative to the support pole assembly 100 is greater than or equal to 0.5°, such as 0.5°, 1°, 2°, 3°, 5°, etc. In this way, the preliminary open angle of the at least three support leg assemblies 300 in the preliminary open state is greater, which is more conducive to the further opening of the at least three support leg assemblies 300, such as more conducive to the manual opening of the support leg assemblies 300 by the user, or the further automatic opening under the action of gravity and inertia of the dynamic assembly. Specifically, during the process that the at least three support leg assemblies 300 change from the collapsed state to the preliminary open state, the opening angle at which the support leg assemblies 300 are pried open by the preliminary opening assembly 500 is greater than or equal to 2°.

[0097] In other examples, as shown in FIGS. 12-16, 27, 28, during the process that the at least three support leg assemblies 300 change from the collapsed state to the preliminary open state, the angle at which the support leg assemblies 300 rotate relative to the support pole assembly 100 is greater than or equal to 0.3°, such as 0.3°, 0.4°, 0.5°, etc.

[0098] In some embodiments, when the at least three support leg assemblies 300 are in the preliminary open state relative to the support pole assembly 100, the self-weight of the dynamic assembly can promote the sliding of the sliding sleeve assembly, so as to open the at least three support leg assemblies 300 relative to the support pole assembly 100; the dynamic assembly includes the sliding sleeve assembly 200, the at least three support leg assemblies 300, and the connecting assembly 400; the sliding sleeve assembly 200 includes a hand-held portion 210 configured to allow the top end of the support pole assembly 100 to protrude, and the support leg assemblies 300 are rotatably connected to the bottom end of the hand-held portion 210; the at least three support leg assemblies 300 are configured to be collapsed relative to the support pole assembly 100 when the hand-held portion is lifted, and to be collapsed on the support pole assembly 100 by the collapsing force.

[0099] For example only, the support leg assemblies 300 are rotatably connected to the bottom end of the hand-held portion 210.

[0100] For example, when the at least three support leg assemblies 300 are in the preliminary open state relative to the support pole assembly 100 and the extension direction of the support pole assembly is along the direction of gravity, the self-weight of the dynamic assembly can promote the downward sliding of the sliding sleeve assembly, so as to open the at least three support leg assemblies 300 relative to the support pole assembly 100.

[0101] The hand holding part 210 of the sliding sleeve assembly 200 is in the form of a sleeve, and the outer peripheral wall of the hand holding part 210 forms part of the outer peripheral wall of the multi-leg support. The length of the hand holding part 210 can be designed according to actual requirements. In order to facilitate the user to hold the multi-leg support with the palm, the length of the hand holding part 210 is greater than or equal to 1 cm. For example, the length of the hand holding part 210 is between 2 cm and 6 cm. In this way, the length of the hand holding part 210 is long enough to be more convenient for the user to hold. Since the hand holding part 210 has a certain thickness (the outer peripheral wall of the hand holding part 210 has a certain spacing in the radial direction with the outer peripheral wall of the support rod assembly 100), the top end of the support leg assembly 300 is rotationally connected to the bottom end of the hand holding part 210, so that the rotating part 541 of the support leg assembly 300 has sufficient rotating space 320. At the same time, when at least three support leg assemblies 300 are in the folded state, the outer peripheral wall of the support leg assembly 300 can also be designed to be flush with the outer peripheral wall of the hand holding part 210. In this way, the appearance of the entire multi-leg support is more simple and flat.

[0102] It can be understood that the self-weight of the moving assembly promotes the downward sliding of the sliding sleeve assembly 200 in various ways. For example, one way is to rely only on the self-weight of the moving assembly to realize the downward sliding of the sliding sleeve assembly 200. It should be noted that the sliding sleeve assembly 200, the at least three support leg assemblies 300, the support rod assembly 100 and the connecting assembly 400 can be selected after being debugged through multiple experiments to meet the design requirement of automatically opening the at least three support leg assemblies 300 by using the gravity of the moving assembly. The weight of the sliding sleeve assembly 200, the at least three support leg assemblies 300, the support rod assembly 100 and the connecting assembly 400 is not limited.

[0103] Another way is that the force-impacting part of the preliminary opening assembly 500 impacts the support surface, and the self-weight and inertia of the moving assembly realize the downward sliding of the sliding sleeve assembly 200. It should be noted that the design of the sliding sleeve assembly 200, the at least three support leg assemblies 300, the support rod assembly 100 and the connecting assembly 400 also meets the design requirement of automatically opening the at least three support leg assemblies 300 by using the gravity and inertia of the moving assembly.

[0104] After the at least three support leg assemblies 300 are initially opened, the weight of the moving assembly can drive the sliding sleeve assembly 200 to slide downward relative to the support rod assembly 100, and the at least three support leg assemblies 300 slide downward with the sliding sleeve assembly 200, the support leg assemblies 300 rotate relative to the hand-held portion 210, and the support leg assemblies 300 open relative to the support rod assembly 100, so that the at least three support leg assemblies 300 are "automatically" opened. In this way, after the at least three support leg assemblies 300 are initially opened, the user only needs to hold the hand-held portion 210 or the support rod assembly 100 with one hand, and the multi-leg support can be automatically opened, which is convenient and fast, and greatly improves the operation convenience of the multi-leg support.

[0105] In some cases where the at least three support leg assemblies 300 are folded relative to the support rod assembly, the user holds the hand-held portion 210 or the support rod assembly 100, and initially opens the force-impacting portion of the assembly 500 to impact the support surface, so that the at least three support leg assemblies 300 are initially opened, and the sliding sleeve assembly 200 slides downward by relying on the weight and inertia of the moving assembly, the at least three support leg assemblies 300 slide downward with the sliding sleeve assembly 200, the support leg assemblies 300 rotate relative to the hand-held portion 210, and the support leg assemblies 300 open relative to the support rod assembly 100, so that the at least three support leg assemblies 300 are "automatically" opened. In this way, the user only needs to hold the hand-held portion 210 or the support rod assembly 100 with one hand, and the multi-leg support can be automatically opened, which is convenient and fast, and greatly improves the operation convenience of the multi-leg support.

[0106] Further, during the process of lifting the sliding sleeve assembly to fold the at least three support leg assemblies 300, the weight of the at least three support leg assemblies 300 promotes the folding of the at least three support leg assemblies 300, and the weight of the support rod assembly 100 promotes the folding of the at least three support leg assemblies 300. It should be noted that the design of the sliding sleeve assembly 200, the at least three support leg assemblies 300, the support rod assembly 100, and the connecting assembly 400 meets the requirement that the weight of the support rod assembly 100 promotes the folding of the at least three support leg assemblies 300 during the process of lifting the hand-held portion 210.

[0107] During the process of folding the at least three support leg assemblies 300, the inertia of the at least three support leg assemblies 300 promotes the folding of the at least three support leg assemblies 300, and the inertia of the support rod assembly 100 promotes the folding of the at least three support leg assemblies 300. It should be noted that the design of the sliding sleeve assembly 200, the at least three support leg assemblies 300, the support rod assembly 100, and the connecting assembly 400 meets the requirement that the inertia of the support rod assembly 100 promotes the folding of the at least three support leg assemblies 300 during the process of lifting the hand-held portion 210.

[0108] Further, during the process that the user holds the hand-held part 210 and lifts the hand-held part 210 so that the at least three supporting leg assemblies 300 are retracted relative to the supporting rod assembly 100, the self-weight effect of the supporting member 700 and the self-weight effect of the electronic terminal promote the retraction of the at least three supporting leg assemblies 300 to the supporting rod assembly 100.

[0109] It can be understood that inertia refers to the property of an object to keep still or move at a constant speed, and the inertia effect of the object refers to the effect brought by the inertia of the object.

[0110] For example, during the process that the user holds the hand-held part 210 and lifts the hand-held part 210 so that the at least three supporting leg assemblies 300 are retracted relative to the supporting rod assembly 100, the inertia effect of the supporting member 700 and the inertia effect of the electronic terminal promote the retraction of the at least three supporting leg assemblies 300 to the supporting 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 supporting leg assemblies 300 are retracted relative to the supporting rod assembly 100, the sliding sleeve assembly 200 has a certain speed from stillness, and the supporting member 700 and the electronic terminal remain still, thereby promoting the retraction of the at least three supporting leg assemblies 300 to the supporting rod assembly 100.

[0111] In the process that the user lifts the hand-held part 210, the user substantially holds the hand-held part 210 and applies an upward lifting force to it. When the multi-leg support needs to be retracted, the user lifts the hand-held part 210 upward, the supporting rod assembly 100 slides downward relative to the sliding sleeve assembly 200 under the gravity and inertia effect of the components such as the supporting rod assembly 100, the supporting member 700 and the electronic terminal, the supporting rod assembly 100 is linked to the at least three supporting leg assemblies 300 through the connecting assembly 400 to retract the at least three supporting leg assemblies 300 synchronously, and the at least three supporting leg assemblies 300 further promote the retraction of the at least three supporting leg assemblies 300 under the gravity and inertia effect of the at least three supporting leg assemblies 300. Thus, when the user lifts the hand-held part 210, the at least three supporting leg assemblies 300 can be retracted to the supporting rod assembly 100, and finally the at least three supporting leg assemblies 300 are kept retracted to the supporting rod assembly 100 by the retraction force. Thus, the user only needs to hold and lift the hand-held part 210 upward with one hand to realize the automatic retraction of the multi-leg support. The retraction manner is convenient and fast, and greatly improves the operation convenience of the multi-leg support.

[0112] In an example, the retraction force that the supporting leg assembly 300 receives to keep it retracted to the supporting rod assembly 100 is an adsorption force.

[0113] ​The support leg assembly 300 can be subjected to various types of suction forces that keep it retracted to the support rod assembly 100, such as magnetic force, adhesive force, vacuum negative pressure suction force, etc. That is, the suction force is different from the clamping force, that is, the support leg assembly 300 is not retracted to the support rod assembly 100 by clamping. Thus, in the retracted state, when an external force is applied to the force application part 510 of the preliminary opening assembly 500, the preliminary opening assembly 500 can overcome the suction force of the support leg assembly 300 and directly push open at least three support leg assemblies 300, so that at least three support leg assemblies 300 are in a preliminary opening state relative to the support rod assembly 100. It can be understood that when the support leg assembly 300 is retracted to the support rod assembly 100 by the clamping force, if an external force is applied to the force application part 510, the clamping force of the support leg assembly 300 needs to be released first, and then at least three support leg assemblies 300 are pushed open. Thus, the structure of the preliminary opening assembly 500 is more complex, or the external force required to be applied is greater. Therefore, when the retraction force that keeps the support leg assembly 300 retracted to the support rod assembly 100 is a suction force, the preliminary opening assembly 500 can directly push open at least three support leg assemblies 300, and the structure of the preliminary opening assembly 500 can be simplified. In addition, the retraction force is set to a suction force, which has lower positioning accuracy requirements, and can make at least three support leg assemblies 300 retract more closely and reliably, and at least three support leg assemblies 300 cannot be retracted due to misalignment of the buckle.

[0114] In another example, as shown in FIGS. 5, 6, 15, 16, 20, 23, the retraction force that keeps the support leg assembly 300 retracted to the support rod assembly 100 is a magnetic force. By making the retraction force that keeps the support leg assembly 300 retracted to the support rod assembly 100 a magnetic force, compared with other ways, due to the action of the magnetic field, the magnetic force can promote the retraction of at least three support leg assemblies 300 to the support rod assembly 100 during the process of at least three support leg assemblies 300 from being spread to being retracted to the support rod assembly 100, so that the automatic retraction of at least three support leg assemblies 300 to the support rod assembly 100 is more rapid and smooth, and at least three support leg assemblies 300 can be more closely attracted to the support rod assembly 100.

[0115] In some embodiments, referring to Figs. 2-8, 12-18, 26-33, the preliminary opening assembly 500 has a force receiving portion 510 exposed relative to the support leg assemblies 300 in the collapsed state, and the preliminary opening assembly 500 includes at least three trigger portions 520 at the bottom end of the support rod assembly 100. The external force includes a force applied to the force receiving portion 510 in a first direction, and the at least three trigger portions 520 are configured to rotate about a rotation axis when the external force is applied, to preliminarily open the at least three support leg assemblies 300. It is understood that the entire external force is a force applied to the preliminary opening assembly 500 in the first direction, or one component of the external force is a force applied to the preliminary opening assembly 500 in the first direction.

[0116] In the present embodiment, the number of the at least three trigger portions 520 can correspond to the number of the at least three support leg assemblies 300, and the number of the trigger portions 520 can also be greater than the number of the support leg assemblies 300. The shape and form of the trigger portions 520 can be various, such as a protrusion, a polygonal corner, a cam flange, etc. When the external force is applied to the force receiving portion 510, the at least three trigger portions 520 are rotated about the rotation axis to push open the at least three support leg assemblies 300, so that the external force is more effectively converted into a pushing open force of the preliminary opening assembly 500 on the support leg assemblies 300, and the preliminary opening angle of the at least three support leg assemblies 300 pushed open by the preliminary opening assembly 500 is greater, thereby facilitating further automatic opening of the support leg assemblies.

[0117] In other embodiments, a contact surface corresponding to the trigger portion 520 can be provided on the support leg assembly 300, and the contact surface is inclined. When the external force is applied to the force receiving portion 510, the at least three trigger portions 520 slide in the first direction to gradually push open the at least three support leg assemblies 300, such as the angle between the outer normal direction of the contact surface and the first direction being greater than 90°.

[0118] To facilitate opening operation of the multi-leg support, the force receiving portion 510 can optionally protrude from the bottom end of the support leg assembly 300 when the support leg assembly 300 is in the collapsed state. In this way, the user can hold the hand holding portion 210 of the sliding sleeve assembly 200 with one hand, and press or hit the ground or support surface with the force receiving portion 510. After the preliminary opening assembly 500 preliminarily opens the plurality of support leg assemblies 300, the plurality of support leg assemblies 300 are quickly opened by gravity and inertia, thereby achieving one-handed quick opening operation of the multi-leg support.

[0119] It can be understood that when the at least three support leg assemblies 300 are in the collapsed state, the bottom ends of the support leg assemblies 300 extend beyond the bottom end of the support rod assembly 100, and cover the force receiving portion 510 of the preliminary opening assembly 500, which protrudes from the bottom end of the support leg assemblies 300 (the force receiving portion 510 is located below the bottom end of the support leg assemblies 300). The force receiving portion 510 can be flat, curved, partially spherical, or the like, and the force receiving portion 510 can also be a part of the preliminary opening assembly 500, and the size of the force receiving portion 510 is not limited.

[0120] For example, as shown in FIGS. 7, 8, 16-20, 29, and 41, the preliminary opening assembly 500 includes a touch member 540, which is polygonal, and the at least three touch portions 520 are at least three corners of the polygon. The multi-legged support is usually a three-legged support or a four-legged support, and in order to maintain overall consistency, the area enclosed by the bottom surfaces of the at least three support leg assemblies 300 is also approximately polygonal, such as triangular or rectangular. By making the touch member 540 polygonal, the space enclosed by the bottom surfaces of the at least three support leg assemblies 300 can be better adapted. By making the touch portions 520 at least three corners of the polygon, the corners can better pry open the support leg assemblies 300 when the touch member 540 rotates.

[0121] In an example, referring to FIGS. 2-6, 12-16, 20, 23, 28, and 41, when in the collapsed state, the at least three support leg assemblies 300 are enclosed around the outer periphery of the support rod assembly 100, the number of the at least three touch portions 520 corresponds to the number of the at least three support leg assemblies 300, each touch portion 520 is located between two adjacent support leg assemblies 300, and the inner wall surface of the support leg assemblies 300 has a contact surface 310 arranged between the two adjacent touch portions 520, which is configured to contact the touch portions 520 and gradually preliminarily open the at least three support leg assemblies 300 when the at least three touch portions 520 rotate.

[0122] In this embodiment, the contact surface 310 can be flat or convexly curved. It can be understood that when the at least three support leg assemblies 300 are in the collapsed state, the vertical distance between the rotation axis and the contact surface 310 is less than the distance between the rotation axis and the joint between the two adjacent support leg assemblies 300. More specifically, the multi-legged support further includes a non-slip pad 380 arranged at the bottom end of the support leg assemblies 300, and the contact surface 310 is arranged on the non-slip pad 380.

[0123] In the folded state, the contact portions 520 are located between the adjacent support leg assemblies 300, i.e., the distance from the top end of the contact portion 520 to the rotation axis is greater than the distance between the rotation axis and the contact surface 310. In this way, after the rotation of the at least three contact portions 520, the contact portions 520 move along the contact surface 310 to gradually push away the at least three support leg assemblies 300. In this way, the process of pushing away the at least three support leg assemblies 300 by the at least three contact portions 520 is smoother, and the at least three contact portions 520 do not interfere with the folding of the at least three support leg assemblies 300.

[0124] Further, as shown in FIGS. 6 and 16, the contact surfaces 310 of the at least three support leg assemblies 300 enclose a rotation space 320, and the cross-sectional area of the rotation space 320 gradually decreases from the bottom to the top. That is, the contact surface 310 is inclined, and the angle between the outer normal direction of the contact surface 310 and the first direction is greater than 90°. In this way, the at least three contact portions 520 can simultaneously rotate and slide in the first direction to push away the at least three support leg assemblies 300, so that the process of pushing away the at least three support leg assemblies 300 by the at least three contact portions 520 is smoother, in other words, the preliminary opening of the multi-leg support is more labor-saving. In this use mode, the user can twist, press, or hit the preliminary opening assembly in various ways to preliminarily open the support leg assemblies, so that the ways of using the preliminary opening assembly are diversified, and the user can use the multi-leg support more conveniently.

[0125] Further, as shown in FIG. 29, the contact surfaces 310 of the at least three support leg assemblies 300 enclose a rotation space 320, and the cross-sectional area of the rotation space 320 gradually decreases from the bottom to the top. That is, the contact surface 310 is inclined, and the angle between the outer normal direction of the contact surface 310 and the first direction is greater than 90°. In this way, the at least three contact portions 520 can rotate to push away the at least three support leg assemblies 300, and the at least three contact portions 520 can also slide in the first direction to push away the at least three support leg assemblies 300; the user can twist, press, or hit the preliminary opening assembly in various ways to preliminarily open the support leg assemblies, so that the ways of using the preliminary opening assembly are diversified, and the user can use the multi-leg support more conveniently.

[0126] In some embodiments, as shown in FIG. 31, the preliminary opening assembly 500 includes a movable member 530 and a contact member 540, and the contact member 540 is provided with at least three contact portions 520. When the preliminary opening assembly 500 is subjected to external action, the movable member 530 slides relative to the support rod assembly 100 to drive the contact member 520 to rotate and gradually preliminarily open the at least three support leg assemblies 300.

[0127] The connection between the movable member 530 and the trigger member 540 can be adjusted and selected according to the sliding position of the movable member 530 relative to the support rod assembly 100. For example, when the movable member 530 slides along the axial direction of the support rod assembly 100, the movable member 530 and the trigger member 540 can be screwed together. When the movable member 530 slides along the radial direction of the support rod assembly 100, the movable member 530 and the trigger member 540 form a gear-rack structure. The movable member 530 and the preliminary opening assembly can also be connected in other ways, as long as the linear motion of the movable member 530 relative to the support rod assembly 100 can be converted into the circumferential rotational motion of the preliminary opening assembly. For example, the movable member 530, the trigger member 540, or the support rod assembly 100 can form a cam mechanism, a screw pair mechanism, or a crank slider mechanism.

[0128] The movable member 530 is directly or indirectly subjected to an external action to slide relative to the support rod assembly 100, so as to transmit the external action to the trigger member 540 and apply a force to the trigger member 540 to make it rotate, thereby making the trigger member 540 rotate to preliminarily open at least three support leg assemblies 300. For example, the trigger member 540 can be directly or indirectly pressed by the movable member 530. For another example, the trigger member 540 can be directly or indirectly acted on by the movable member 530.

[0129] In some embodiments, as shown in FIGS. 5-8 and 12-18, the preliminary opening assembly 500 and the support rod assembly 100 are connected by a screw pair or a cam pair. When the preliminary opening assembly 500 is subjected to an external action, the preliminary opening assembly 500 simultaneously slides and rotates about the rotation axis relative to the support rod assembly 100. For example, when the preliminary opening assembly 500 and the support rod assembly 100 are connected by a screw pair, the preliminary opening assembly 500 performs a screw motion relative to the support rod assembly 100. The external action includes a force pushing the preliminary opening assembly 500 in a first direction, or the external action includes a torque about the rotation axis of the preliminary opening assembly. The first direction is along the rotation axis. It can be understood that all or a component of the external action is the force pushing the preliminary opening assembly 500 in the first direction, or all or a component of the external action is the torque about the rotation axis. In this embodiment, during the process of rotating the preliminary opening assembly 500 from the initial position to the second position, the preliminary opening assembly 500 pries open at least three support leg assemblies 100, so that the at least three support leg assemblies 300 change from the folded state to the preliminarily opened state.

[0130] In this embodiment, the preliminary opening assembly 500 includes a movable piece 530, a triggering piece 540, and a force applying piece 550. The movable piece 530 and the force applying piece 550 are fixedly connected to the two sides of the triggering piece 540, respectively. The bottom end of the force applying piece 550 forms a force applying part 510. The movable piece 530 is cooperated with the bottom end of the support rod assembly 100 through a screw pair or a cam pair. The multi-legged support further includes an elastic piece 600. The elastic piece 600 is configured to provide an elastic force to the movable piece 530, so that the preliminary opening assembly 500 is driven to return to the initial position by the elastic force after the external action is removed. For example, the multi-legged support further includes an elastic piece 600. The elastic piece 600 is configured to provide a downward elastic force to the movable piece 530, so that the preliminary opening assembly 500 is driven to return to the initial position downward by the elastic force after the external action is removed.

[0131] In this embodiment, the movable piece 530 and the support rod assembly 100 are provided with screw threads that are cooperated with each other, so as to realize the screw cooperation between the movable piece 530 and the bottom end of the support rod assembly 100. For example, the screw threads provided on the movable piece 530 and the support rod assembly 100 are rectangular screw threads or triangular screw threads, etc. The movable piece 530 can be a threaded column or a threaded hole.

[0132] The movable piece 530 and the force applying piece 550 are fixedly connected to the triggering piece 540 through an integral molding manner, or through a split molding manner, such as welding, bonding, clamping, etc. In order to improve the structural strength and simplify the installation steps, in an example, the movable piece 530, the triggering piece 540, and the force applying piece 550 are integrally formed. The triggering piece 540 can be in a plate shape, a block shape, a hemispherical shape, etc. By fixedly connecting the movable piece 530, the triggering piece 540, and the force applying piece 550, the movable piece 530 is screw cooperated or cam cooperated with the bottom end of the support rod assembly 100. When the external action is applied to the bottom end of the force applying piece 550, the entire preliminary opening assembly 500 is driven to move upward, and at the same time, the preliminary opening assembly 500 is driven to rotate, so that at least three triggering parts 520 are driven to rotate to push open at least three support leg assemblies 300. In this way, the preliminary opening assembly 500 can slide and rotate around the rotation axis at the same time when it is subjected to the external action. This structure is simple and reliable, and makes the preliminary opening of the multi-legged support more convenient.

[0133] In this embodiment, in order to facilitate the preliminary opening assembly 500 to impact the support surface, the force applying piece 550 can be a convex column, a protrusion, etc. When the at least three support leg assemblies 300 are in the folding state, the bottom end of the force applying piece 550 protrudes from the bottom end of the support leg assembly 300 in the folding state.

[0134] Referring to FIG. 8, the user can also use the knob force element 550, i.e. apply a torque around the rotation axis of the force element 550, to achieve the preliminary opening of the multi-foot support. In this way, the user can choose different opening methods according to actual needs, for example, in some scenarios where it is not convenient to press or hit the preliminary opening assembly 500, the preliminary opening assembly 500 can be preliminarily opened by rotating the at least three support foot assemblies 300, thereby improving the product applicability. In order to facilitate the user to rotate the preliminary opening assembly 500, a gripping groove or space for accommodating fingers can be provided on the force element 550 or the actuating element 540, so as to facilitate the user to grip the preliminary opening assembly 500 for rotation to achieve the preliminary opening of the at least three support foot assemblies 300.

[0135] Specifically, the force element 550 is provided with three adjusting pieces 551, which are centrally symmetric about the rotation axis of the force element 550, and the three adjusting pieces 551 are respectively connected to the corresponding three actuating portions 540, and the adjacent two adjusting pieces 551 are gripping spaces; the user places three fingers in the three gripping spaces respectively; and the step of preliminarily opening the at least three support foot assemblies 300 relative to the support rod assembly 100 includes: rotating the user's arm to apply a rotation torque around the rotation axis of the preliminary opening assembly 500 to the preliminary opening assembly 500, so that the rotating adjusting portion rotates around the rotation axis 501 of the preliminary opening assembly 500 to rotate the preliminary opening assembly 500, so that the at least three support foot assemblies 300 are preliminarily opened relative to the support rod assembly 100.

[0136] The elastic element 600 can be a reset spring, such as a compression spring, a torsion spring, a conical spring, etc., and the elastic element 600 can also be a rubber air bag, a rubber elastic element 600, etc., as long as it can provide an elastic force to the movable element 530. Specifically, the elastic element 600 is clamped between the preliminary opening assembly 500 and the support rod assembly 100, and the elastic recovery direction of the elastic element 600 is arranged along the extension direction of the rotation axis. By arranging the elastic element 600, the preliminary opening assembly 500 can automatically return to the initial position by the elastic force after the external action is eliminated, without the need for manual resetting of the preliminary opening assembly 500. It can be understood that the external action needs to be greater than the elastic force exerted by the elastic element 600 on the preliminary opening assembly 500 and the friction force between the sliding sleeve assembly 200 and the support rod assembly 100, so that the preliminary opening assembly 500 can move upward relative to the support rod assembly 100.

[0137] In this embodiment, the movable piece 530 has a mounting column 533, the screw thread of the preliminary opening assembly 500 is arranged on the mounting column 533, the mounting column 530 of the movable piece 530 is mounted in a mounting cavity 103 of the support rod assembly 100, the screw thread of the support rod assembly 100 is arranged on the cavity wall of the mounting cavity 103, the mounting column 533 is provided with a containing cavity 502, the containing cavity 502 is communicated to one end of the mounting column 533, and at least three touch parts 540 are connected to the mounting column 533; the mounting column 533 has a first abutting wall, and the first abutting wall is located in the containing cavity 502; the support rod assembly 100 has a second abutting wall, and the second abutting wall is located in the mounting cavity 103; the elastic piece 600 is a return spring, the return spring is a columnar spring or a tower-shaped spring, a first end of the return spring is contained in the containing cavity 502, the first end of the return spring abuts against the first abutting wall, and a second end of the return spring abuts against the second abutting wall; in the process that the preliminary opening assembly 500 is rotated from the initial position to the second position, the mounting column 533 moves towards the second abutting wall, and the return spring is compressed. It can be understood that the mounting column 533 is mounted in the mounting cavity 103, and the first end of the return spring is contained in the containing cavity 502, so that the return spring is at least partially contained in the containing cavity 502, and the overall structure of the multi-foot support is compact. For example, the columnar spring can be a cylindrical spring, a square columnar spring, a polygonal columnar spring, or the like, and the tower-shaped spring can be a conical spring, a circular platform spring, a polygonal tower-shaped spring, or the like. The force of the return spring on the preliminary opening assembly 500 is a force acting on the preliminary opening assembly 500 along the rotation axis, and the force is a pushing force of the return spring on the preliminary opening assembly 500. It should be understood that the external action includes a pushing force acting on the preliminary opening assembly 500 and along the rotation axis, and / or the external action includes a rotation torque acting on the preliminary opening assembly 500 and around the rotation axis. It can be understood that the first end of the return spring is contained in the containing cavity, so that the return spring is limited to be located in the preliminary opening assembly, so that the return spring is not easy to bend or deviate from its use position in the process of stretching and retracting. It can be understood that the return spring is a columnar spring or a tower-shaped spring, so that the return spring is easy to be compressed, and the return spring does not hinder the movement of the preliminary opening assembly.

[0138] In other implementations, the mounting column 520 has a first end face, the containing cavity 502 is communicated to the first end face, the first end face has a spacing from the second abutting wall in the state that the preliminary opening assembly 500 is in the second position, and the return spring 610 is mostly contained in the containing cavity 502.

[0139] Referring to Figs. 6, 7, 9, etc., the movable member 530 further comprises a connecting column 534 connected to the mounting column 533, one end of the connecting column 534 is accommodated in the accommodating cavity 502, and the reset spring is sleeved on the connecting column 534; the support rod assembly 100 has a retaining portion 122, the retaining portion 122 is provided with a through hole 103, the connecting column 534 passes through the through hole 103, and the retaining portion 122 is provided with a second abutting wall; in the state that the preliminary opening assembly is in the initial position, the retaining portion 122 is used for retaining the connecting column; the multi-leg support further comprises a first fastener 620, the first fastener 620 is in fastening connection with the connecting column 534, and first heads of the first fastener 620 are located on opposite sides of the retaining portion 122 respectively with the mounting column of the preliminary opening assembly 500; in the process that the preliminary opening assembly 500 returns from the second position to the initial position, the reset spring acts on the preliminary opening assembly 500, and the first heads of the first fastener 620 move towards the retaining portion 122; in the state that the preliminary opening assembly 500 is in the initial position, the first heads of the first fastener 620 abut against the retaining portion 122 to retain the connecting column. Understandably, the retaining portion retains the connecting column, and specifically, the first heads of the first fastener 620 abut against the retaining portion 122, so that the preliminary opening assembly is mounted in the support rod assembly 100 in a limited manner, and the preliminary opening assembly 500 is prevented from being separated from the support rod assembly 100 under the action of the reset spring. The reset spring is sleeved on the connecting column 534, the reset spring is prevented from being separated from the accommodating cavity 502, the reset spring is not easy to bend or be separated from the use position in the stretching and retracting process, and the structure of the multi-leg support is compact.

[0140] Understandably, one end of the connecting column 534 is accommodated in the accommodating cavity 502, the second abutting wall 102 is located in the accommodating cavity, and the first end of the reset spring 610 is accommodated in the accommodating cavity 502, so that the structure of the multi-leg support is compact.

[0141] In the present application, the fastener can be a threaded member or a rivet member, such as a screw, a rivet, etc.

[0142] In some implementations, referring to FIGS. 26-30, the preliminary opening assembly 500 is slidingly mounted to the support pole assembly 100, and an external action applied to the preliminary opening assembly 500 can cause the preliminary opening assembly 500 to slide relative to the support pole assembly 100 in a first direction, and the preliminary opening assembly 500 has at least three pushers 570, and the at least three pushers 570 correspond to the at least three support leg assemblies 300 respectively; during the process of the preliminary opening assembly 500 sliding relative to the support pole assembly 100, the pushers 570 push the corresponding support leg assemblies 300 to cause the at least three support leg assemblies 300 to fold up 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. During the process of the preliminary opening assembly 500 moving from the initial position to the third position, the pushers 570 push the corresponding support leg assemblies 300 to cause the at least three support leg assemblies 300 to fold up 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. It should be understood that the initial position of the preliminary opening assembly 500 can refer to a specific position or a range of positions; the third position of the preliminary opening assembly 500 can refer to a specific position or a range of positions, for example, any position that can cause the support leg assemblies.

[0143] It can be understood that the sliding of the preliminary opening assembly 500 relative to the support pole assembly 100 causes the at least three support leg assemblies 300 to preliminarily open relative to the support pole assembly 100, so that the at least three support leg assemblies 300 are more easily spread out relative to the support pole assembly 100, thereby facilitating the use of the multi-leg support.

[0144] It can be understood that during the process of the pushers 570 pushing the corresponding support leg assemblies 300 to cause the at least three support leg assemblies 300 to fold up 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, the pushers 570 slide relative to the support pole assembly 100 and push the corresponding support leg assemblies 300 to cause the at least three support leg assemblies 300 to fold up 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.

[0145] For example only, the sliding direction of the preliminary opening assembly 500 is along the length direction of the support pole assembly 100, and more specifically, the sliding direction of the preliminary opening assembly 500 is along the central axis of the support pole assembly 100.

[0146] In this implementation, the preliminary opening assembly 500 includes a movable member 530 and a touch member 540, the touch member 540 is connected to the movable member 530, for example, the touch member 540 is integrally connected to the movable member 530, and the pushers 570 are provided on the touch member 540.

[0147] In this implementation, referring to FIG. 30 and the like, the support rod assembly 100 is provided with a mounting cavity 103, and the movable member 530 is in sliding fit with the mounting cavity 103 of the support rod assembly 100; or, the movable member 530 is provided with a mounting cavity 103, and the support rod assembly 100 is in fit with the mounting cavity 103 of the preliminary opening assembly 500.

[0148] Specifically, the external action includes an action force on the preliminary opening assembly 500 in the first direction, and the action force is applied to the preliminary opening assembly 500 to make the preliminary opening assembly 500 translate in the first direction relative to the support rod assembly 100. It should be understood that the translation direction of the preliminary opening assembly 500 can be in the first direction, or the translation direction of the preliminary opening assembly 500 can be in the opposite direction of the first direction.

[0149] In this implementation, the external action includes an action force on the preliminary opening assembly 500 in the first direction. It can be understood that the action force in the first direction is applied to the preliminary opening assembly 500 to make the preliminary opening assembly 500 slide, so 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. It should be understood that all the external actions are the action force on the preliminary opening assembly 500 in the first direction, or one component of the external action is the action force on the preliminary opening assembly 500 in the first direction. More specifically, the action force is a pushing force directed to the support rod assembly 100, and the user can press the preliminary opening assembly 500 by hand, or the preliminary opening assembly 500 hits the support surface to achieve the pressing of the preliminary opening assembly 500. The action force can also be a pulling force away from the support rod assembly 100, for example, the user can pull the preliminary opening assembly 500. It can be understood that the action force overcomes the resistance (including the frictional resistance between the preliminary opening assembly 500 and the support rod assembly 100) that the preliminary opening assembly 500 receives, so that the preliminary opening assembly 500 translates in the first direction relative to the support rod assembly 100.

[0150] For example, the first direction is along the length direction of the support rod assembly 100, for example, the preliminary opening assembly 500 is installed at the bottom end of the support rod assembly 100, and the first direction is the direction from the bottom end of the support rod assembly 100 to the top end thereof.

[0151] In this implementation, referring to FIG. 30 and the like, the multi-leg support further comprises an elastic member 600, the elastic member 600 acts on the movable member 530, and the elastic member 600 enables the preliminary opening assembly 500 to return to the initial position; the elastic member 600 can be a return spring, and the return spring is sleeved on the movable member 530. Understandably, the elastic member 600 enables the preliminary opening assembly 500 to return to the initial position, thereby avoiding the preliminary opening assembly 500 from hindering the folding of the support leg assembly 300 relative to the support rod assembly 100, and specifically, avoiding the pushing part 570 of the preliminary opening assembly 500 from hindering the folding of the support leg assembly 300 relative to the support rod assembly 100. For example, the return spring can be a columnar spring, a tower-shaped spring, a torsional spring, or the like. In some cases, the return spring is a columnar spring or a tower-shaped spring, and the action of the return spring on the preliminary opening assembly 500 is an action force on the preliminary opening assembly 500 in the direction of translation of the preliminary opening assembly 500, which is a pulling force or a pushing force of the return spring on the preliminary opening assembly 500.

[0152] In this implementation, referring to FIG. 30, the movable member 530 has a mounting column 533, the support rod assembly 100 has a mounting cavity 103, the mounting column 533 is slidingly mounted in the mounting cavity 103, and the at least three pushing parts 570 are all connected to the mounting column 533; the mounting column 533 has a first abutting wall located in the accommodating cavity 502, the support rod assembly 100 has a second abutting wall located in the mounting cavity 103; the return spring is a columnar spring or a tower-shaped spring, a first end of the return spring abuts against the first abutting wall 503, and a second end of the return spring abuts against the second abutting wall; during the sliding of the preliminary opening assembly 500 and the preliminary opening of the support leg assembly 300, the mounting column 533 moves towards the second abutting wall, and the return spring is compressed. Understandably, the sliding mounting of the mounting column 533 in the mounting cavity 103 and the columnar spring or tower-shaped spring of the return spring enable the return spring to be easily compressed and enable the return spring not to hinder the translation of the preliminary opening assembly 500. For example, the columnar spring can be a cylindrical spring, a square columnar spring, a polygonal columnar spring, or the like, and the tower-shaped spring can be a conical spring, a circular-truncated-cone-shaped spring, a polygonal tower-shaped spring, or the like. The action force of the return spring on the preliminary opening assembly 500 is an action force on the preliminary opening assembly 500 in the direction of translation of the preliminary opening assembly 500, which is a pushing force of the return spring on the preliminary opening assembly 500. Understandably, the external action includes a pushing force on the preliminary opening assembly 500 in the direction of translation.

[0153] In this implementation, referring to FIG. 30, the mounting column 533 is provided with a receiving cavity 502, the receiving cavity 502 is communicated to one end of the mounting column 533, and the first abutting wall 102 is located in the receiving cavity 502; and the first end of the reset spring is accommodated in the receiving cavity 502. It can be understood that the first end of the reset spring is accommodated in the receiving cavity 502, so that the reset spring is at least partially accommodated in the receiving cavity 502, so that the overall structure of the multi-leg support is compact. Moreover, the first end of the reset spring is accommodated in the receiving cavity 502, so that the reset spring is limited to be located in the preliminary opening assembly 500, so that the reset spring is not easy to bend or deviate from its use position in the stretching and retracting process.

[0154] In this implementation, referring to FIG. 30, the movable piece 530 further comprises a connecting column 534 connected to the mounting column 533, and the reset spring is sleeved on the connecting column 534; the support rod assembly 100 is provided with a blocking part 122, and in the state that the preliminary opening assembly 500 is in the initial position, the blocking part 122 blocks the connecting column 534 to avoid the preliminary opening assembly 500 from deviating from the support rod assembly 100; the movable piece 530 further comprises an abutting piece 580 mounted on the connecting column 534, and in the state that the preliminary opening assembly 500 is in the initial position, the abutting piece 580 abuts against the blocking part 122 to achieve that the blocking part 122 blocks the connecting column 534; in the process that the preliminary opening assembly 500 returns to the initial position, the reset spring acts on the preliminary opening assembly 500 to make the abutting piece 580 move towards the blocking part 122. It can be understood that the blocking part 122 blocks the connecting column 534 of the preliminary opening assembly 500, so that the preliminary opening assembly is limitedly mounted on the support rod assembly 100, avoiding that the preliminary opening assembly 500 deviates from the support rod assembly 100 under the action of the reset spring. The reset spring is sleeved on the connecting column 534, so that the reset spring is not easy to bend or deviate from its use position in the stretching and retracting process, and also makes the structure of the multi-leg support compact.

[0155] For example, the preliminary opening assembly 500 further comprises a fourth fastener 590, the fourth fastener 590 is fastened and connected through the abutting piece 580 and the connecting column 534, and the fourth fastener 590 is used to mount the abutting piece 580 on the connecting column 534. For example, the connecting column 534 is slidingly mounted on the support rod assembly, the support rod assembly is provided with a through hole, the connecting column 534 is slidingly mounted on the through hole of the support rod assembly, so that the preliminary opening assembly is slidingly mounted on the support rod assembly; in particular, the through hole is arranged on the first mounting part 132 of the mounting piece 130.

[0156] In this implementation, referring to FIG. 30 and the like, in the state that the preliminary opening assembly 500 is in the initial position, the connecting column 534 directly or indirectly abuts against the blocking part 122.

[0157] In some embodiments, as shown in FIG. 30, one end of the connecting rod 534 is accommodated in the accommodating cavity 502, and the mounting member 130 has a blocking portion 122. When the preliminary opening assembly 500 is initially opened to an initial position, the blocking portion 122 blocks the connecting rod 534.

[0158] In some embodiments, as shown in FIG. 30, the preliminary opening assembly 500 further includes a force applying member 550 having a force applying portion 510. The external action includes an external force applied to the preliminary opening assembly 500 in the first direction. Pressing the force applying portion 510 in the first direction causes the preliminary opening assembly 500 to translate in the first direction relative to the support rod assembly 100, so that the preliminary opening assembly 500 slides to preliminarily open the support leg assembly 300. It can be understood that the user presses the force applying portion 510, 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 force applying portion 510 with his hand, or the user hits the support surface to press the preliminary opening assembly 500.

[0159] In some embodiments, as shown in FIGS. 29 and 30, the preliminary opening assembly 500 is rotatable relative to the support rod assembly 100 about a rotation axis, the first direction is along the rotation axis, and the preliminary opening assembly 500 has at least three triggering portions 520. The rotation of the preliminary opening assembly 500 relative to the support rod assembly 100 about the rotation axis can cause the triggering portions 520 to push open the corresponding support leg assemblies 300, so that the at least three support leg assemblies 300 are folded relative to the support rod assembly 100 to become preliminarily opened relative to the support rod assembly 100. The external action includes a rotational torque applied to the preliminary opening assembly 500 about the rotation axis 501 thereof. It can be understood that the number of the triggering portions 520 is the same as that of the pushing portions 570. In this embodiment, during the rotation of the preliminary opening assembly 500 from the initial position to the second position, the preliminary opening assembly 500 pushes open the at least three support leg assemblies 100, so that the at least three support leg assemblies 300 change from the folded state to the preliminarily opened state. It can be understood that the initial position of the preliminary opening assembly 500 can refer to a specific position or a range of positions, and the second position of the preliminary opening assembly 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 preliminarily opened state, which can be the second position of the preliminary opening assembly 500.

[0160] In this embodiment, the at least three triggering portions 520 and the at least three pushing portions 570 are arranged alternately, each triggering portion 520 is located between two adjacent pushing portions 570, and each pushing portion 570 is located between two adjacent triggering portions 520.

[0161] In some implementations, referring to Figs. 29, 30, etc., during the process of rotating the preliminary opening assembly 500 relative to the support rod assembly 100, the preliminary opening assembly 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 foot assemblies 300; any one of the at least three holding positions is an initial position.

[0162] It should be understood that any one of the at least three holding positions is the initial position, i.e., the preliminary opening assembly 500 in any holding position is equivalent to the preliminary opening assembly 500 in the initial position, and the rotation of the preliminary opening assembly 500 can cause the touching part 520 to touch the corresponding support foot assembly 300, or the translation of the preliminary opening assembly 500 in the first direction can cause the pushing part 570 to push the corresponding support foot assembly 300.

[0163] It can be understood that the corresponding support foot assembly 300 touched by the touching part 520 of the preliminary opening assembly 500 is different in different corresponding holding positions, and the corresponding support foot assembly 300 pushed by the pushing part 570 of the preliminary opening assembly 500 is different in different corresponding holding positions. For example, the number of the support foot assemblies 300 is 3, 4, 5, etc., and the number of the holding positions is 3, 4, 5, etc.

[0164] It can be understood that the holding position can refer to a specific position or a range of positions. During the process of rotating the preliminary opening assembly 500 relative to the support rod assembly 100, the preliminary opening assembly 500 is kept in the holding position without external action on the preliminary opening assembly 500, or during the process of rotating the preliminary opening assembly 500 relative to the support rod assembly 100, the external action has a rotation torque smaller than the holding torque of the preliminary opening assembly 500, and the preliminary opening assembly 500 is kept in the holding position.

[0165] In some implementations, referring to FIG. 29, FIG. 30, etc., the multi-leg support further comprises a resilient member 600, which can be a return spring, etc., and the resilient member 600 acts on the preliminary opening assembly 500 to make it return to the initial position; the movable member 530 has a first clamping portion 581, and the support rod assembly 100 has a second clamping portion 122a, the first clamping portion 581 is clamped at different positions of the second clamping portion 122a to make the preliminary opening assembly 500 remain at different holding positions; in the process of applying external force to the preliminary opening assembly 500 to make it rotate relative to the support rod assembly 100, the preliminary opening assembly 500 slides relative to the support rod assembly 100 and the return spring expands and contracts, and the first clamping portion 581 is disengaged or clamped at the second clamping portion 122a; when the preliminary opening assembly 500 stops rotating relative to the support rod assembly 100, the return spring acts on the preliminary opening assembly 500 to make the first clamping portion 581 clamped at the second clamping portion 122a, and the return spring makes the preliminary opening assembly 500 return to the initial position.

[0166] It can be understood that on the one hand, the return spring makes the first clamping portion 581 clamped at the second clamping portion 122a, and on the other hand, the expansion and contraction of the return spring 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 at the second clamping portion 122a or the process of the first clamping portion 581 disengaged from the second clamping portion 122a, the return spring expands and contracts. The multiple uses of the return spring also make the structure of the multi-leg support compact.

[0167] It can be understood that the first clamping portion 581 can be clamped at at least three positions of the second clamping portion 122a, so that the preliminary opening assembly 500 can be held at at least three holding positions.

[0168] For example, the first clamping portion 581 is provided on the blocking member 580 of the preliminary opening assembly 500, and the second clamping portion 122a is provided on the mounting member 130 of the support rod assembly 100, more specifically, the second clamping portion 122a is provided on the second mounting portion 131.

[0169] In some implementations, referring to FIG. 29 and the like, 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 three second clamping recesses so that the first clamping portion 581 is clamped at different positions of the second clamping portion 122a, the second clamping recess is open to facilitate the first clamping protrusion to be separated from the second clamping recess during the process of initially opening the assembly 500 relative to the support rod assembly 100, and during the process of initially opening the assembly 500 relative to the support rod assembly 100 so that the first clamping protrusion is separated from the second clamping recess, the first clamping protrusion slides along the inner wall of the second clamping recess; when the assembly 500 stops rotating relative to the support rod assembly 100, the elastic member acts on the assembly 500 to clamp the at least one first clamping protrusion into the corresponding at least one second clamping recess.

[0170] Understandably, the second clamping recess is open to facilitate the first clamping protrusion to be separated from the second clamping recess during the process of applying external force to the assembly 500 to rotate the assembly 500 relative to the support rod assembly 100.

[0171] For example, the second clamping recess is V-shaped.

[0172] 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 so that the first clamping portion 581 is clamped at different positions of the second clamping portion 122a, the first clamping recess is open, and during the process of applying external force to the assembly 500 to rotate the assembly 500 relative to the support rod assembly 100, the second clamping protrusion slides along the inner wall of the first clamping recess. Understandably, the first clamping recess is open to facilitate the second clamping protrusion to be separated from the first clamping recess during the process of applying external force to the assembly 500 to rotate the assembly 500 relative to the support rod assembly 100; during the process of rotating the assembly 500 relative to the support rod assembly 100 so that the second clamping protrusion is separated from the first clamping recess, the second clamping protrusion slides along the inner wall of the first clamping recess; when the assembly 500 stops rotating relative to the support rod assembly 100, the reset spring acts on the assembly 500 to clamp the at least one second clamping protrusion into the corresponding at least one first clamping recess. For example, the first clamping recess is V-shaped.

[0173] In some embodiments, referring to FIG. 29 and the like, 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 122a, and the space between two adjacent partition protrusions 122b is a second clamping groove; the partition protrusions 122b gradually narrow along a first direction, and the first side 581a of the first clamping protrusion gradually narrows along 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 assembly 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.

[0174] It can be understood that the partition protrusions 122b and the first side 581a of the first clamping protrusion are 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.

[0175] It can be understood that when the preliminary opening assembly 500 rotates to any angle relative to the support rod assembly 100, the first clamping protrusion 581 of the preliminary opening assembly 500 can be clamped into the second clamping groove 122a under the action of the reset spring. For example, when the preliminary opening assembly 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 assembly 500 is clamped into the second clamping groove under the action of the reset spring. For another example, when the preliminary opening assembly 500 rotates to another angle, the second clamping protrusion is not aligned with the second clamping groove, and the first clamping protrusion of the preliminary opening assembly 500 is clamped into the second clamping groove under the action of the reset spring, and the preliminary opening assembly 500 rotates in the process of clamping the first clamping protrusion 581 into the second clamping groove.

[0176] In some embodiments, referring to FIG. 29 and the like, the preliminary opening assembly 500 has a blocking piece 580, and the support rod assembly 100 has a blocking part 122, and in the state that the preliminary opening assembly 500 is in the initial position, the blocking part 122 blocks the blocking piece 580 to avoid the preliminary opening assembly 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, and 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 assembly 500 remain in different holding positions, and are also used to avoid the preliminary opening assembly 500 from being separated from the support rod assembly 100, so that the structure of the multi-leg support is compact.

[0177] In some implementations, referring to FIG. 29 and the like, during the process of rotating the preliminary opening assembly 500 relative to the support rod assembly 100, the preliminary opening assembly 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.

[0178] It should be understood that any one of the at least three holding positions is the initial position, that is, the preliminary opening assembly 500 in any holding position is equivalent to the preliminary opening assembly 500 in the initial position, and the preliminary opening assembly 500 is translated in the first direction to push the corresponding support leg assembly 300.

[0179] Referring to FIG. 29, the user can also apply a torque to the force element 550 about the rotation axis thereof, that is, apply a force to the force element 550 about the rotation axis thereof, to achieve the preliminary opening of the multi-leg support. In this way, the user can choose different opening modes according to actual needs, for example, in some scenarios where it is not convenient to press or hit the preliminary opening assembly 500, the preliminary opening assembly 500 can be rotated to preliminarily open at least three support leg assemblies 300, which can improve the applicability of the product. In order to facilitate the user to rotate the preliminary opening assembly 500, a gripping groove or space for accommodating fingers can be provided on the force element 550 or the push element 540, so that the user can grasp the preliminary opening assembly 500 to rotate it to preliminarily open at least three support leg assemblies 300.

[0180] Specifically, the force element 550 is provided with three adjusting pieces 551, which are centrally symmetric about the rotation axis of the force element 550, and the three adjusting pieces 551 are respectively connected to the three push elements 540; adjacent two adjusting pieces 551 are gripping spaces; the user can place three fingers in the three gripping spaces; and the step of preliminarily opening at least three support leg assemblies 300 relative to the support rod assembly 100 includes: rotating the user's arm to apply a rotation torque to the preliminary opening assembly 500 about the rotation axis thereof, so that the rotation adjusting part rotates about the rotation axis 501 of the preliminary opening assembly 500, so that the preliminary opening assembly 500 rotates, and at least three support leg assemblies 300 are preliminarily opened relative to the support rod assembly 100.

[0181] In some implementations, referring to FIGS. 1-25 or FIG. 30, the preliminary opening assembly 500 is rotationally limitedly installed on the support rod assembly 100, so that the preliminary opening assembly 500 cannot exceed the initial position, or the preliminary opening assembly 500 exceeds the second position, for example, the preliminary opening assembly 500 directly or indirectly abuts against the support rod assembly 100 in the state of the initial position; for another example, the preliminary opening assembly 500 directly or indirectly abuts against the support rod assembly 100 in the state of the second position.

[0182] In another embodiment, referring to FIG. 31 to FIG. 35, the preliminary opening assembly 500 includes a movable member 530 and a triggering member 540, the movable member 530 slides relative to the support rod assembly 100 to drive the triggering member 540 to rotate around the rotation axis, wherein the movable member 530 slides along the rotation axis; the movable member 530 is directly or indirectly subjected to an external force to slide relative to the support rod assembly 100. The external force includes a force pushing the preliminary opening assembly 500 in a first direction, the first direction being along the rotation axis; it can be understood that all or a part of the external force is the force pushing the preliminary opening assembly 500 in the first direction. In this embodiment, the triggering member 540 pushes away at least three support leg assemblies 100 to change the at least three support leg assemblies 100 from the folded state to the preliminary opening state during the process of rotating the triggering member 540 from the initial position to the second position.

[0183] In this embodiment, the preliminary opening assembly 500 further includes a force applying member 550, which is circumferentially limited with the rotation axis of the movable member 530; the triggering member 540 is provided with at least three triggering portions 520, and the bottom end of the force applying member 550 forms a force applying portion 510; the movable member 530 is screw-coupled with the triggering member 540 to drive the movable member 530 to slide along the rotation axis and drive the triggering member 540 to rotate around the rotation axis when the force applying portion 510 is subjected to an external force.

[0184] In this embodiment, the multi-leg support further includes a resilient member 600, which is configured to provide a resilient force to the movable member 530 to drive the movable member 530 to return to the initial position by the resilient force after the external force is removed. For example, the movable member 530 is coupled with the support rod assembly 100 to slide up and down, and the resilient member 600 is configured to provide a downward resilient force to the movable member 530 to drive the movable member 530 to return downward to the initial position by the resilient force after the external force is removed.

[0185] In this embodiment, the circumferential limitation and sliding of the movable member 530 and the support rod assembly 100 can be achieved by setting a sliding groove and a sliding rail on the movable member 530 and the support rod assembly 100 to match with each other. Since the movable member 530 is circumferentially limited with the support rod assembly 100 around the rotation axis, the movable member 530 slides and does not rotate when the force applying portion 510 is subjected to an external force, so as to drive the triggering member 540 to rotate. By making the movable member 530 and the triggering member 540 into a split structure and screw-coupling them, the triggering member 540 does not need to slide when the external force is applied to the force applying portion 510 to drive the triggering member 540 to rotate, which can reduce the movement resistance, and further make the preliminary opening operation of the entire multi-leg support more labor-saving. In the case that the user indirectly presses the movable member 522 through the force applying member, the force applying member does not rotate, which reduces the friction of the force applying member to the user's hand.

[0186] Specifically, the movable member 530 and the actuating member 540 can be provided with mating threads to achieve the screwing of the movable member 530 and the actuating member 540. For example, the threads provided on the movable member 530 and the actuating member 540 can be rectangular threads or triangular threads. For example, the movable member 530 is a threaded column, the actuating member 540 is provided with a threaded hole for the threaded column to pass through, and the threaded column is screwed into the threaded hole. Specifically, the actuating member 540 includes a rotating column and an actuating plate, the actuating plate is connected to one end of the rotating column, at least three corners of the actuating plate form at least three actuating portions 520, the rotating column is provided with a threaded hole, the rotating column is rotatably connected to the bottom end of the support rod assembly 100, and the movable member 530 passes through the actuating plate and is screwed with the threaded hole. For example, the actuating plate is located below the support rod assembly 100.

[0187] To facilitate assembly, the force member 550 and the movable member 530 can be provided separately. Then the force member 550 and the movable member 530 can be fixedly connected by screws, clamping, etc. The form of the force member 550 can also be various, for example, the force member 550 can be a column structure, a hemispherical structure, etc., which is not limited here.

[0188] The elastic member 600 can be a return spring, such as a compression spring, a torsion spring, a conical spring, etc. The elastic member 600 can also be a rubber airbag, a rubber elastic member 600, etc., which can provide an elastic force to the movable member 530 (for example, a downward elastic force to the movable member 530). Specifically, the elastic member 600 is clamped between the force member 550 and the actuating member 540, and the elastic recovery direction of the elastic member 600 is arranged along the extension direction of the rotation axis. By arranging the elastic member 600, the preliminary opening assembly 500 can automatically return to the initial position by the elastic force after the first external force is eliminated, without manually resetting the preliminary opening assembly 500. It can be understood that the external force needs to be greater than the elastic force exerted by the elastic member 600 on the preliminary opening assembly 500 and the friction force between the sliding sleeve assembly 200 and the support rod assembly 100, so that the movable member 530 can slide relative to the support rod assembly 100, and the actuating member 540 rotates relative to the support rod assembly 100.

[0189] For example, the elastic member 600 is a return spring, and the return spring is sleeved on the periphery of the movable member 530.

[0190] In other implementations, the movable member 530 is reset by other means, for example, the user directly or indirectly pulls the movable member 530 to reset it. In other implementations, the self-weight of the movable member 530 causes it to reset, or the self-weight of the movable member 530 and the force member 550 causes it to reset.

[0191] In some embodiments, the active element is indirectly subjected to external force, the active element is subjected to external force through an intermediate element, the user indirectly presses the active element 530 through the intermediate element, the active element 530 and the intermediate element do not rotate, the friction of the intermediate element on the user's hand is reduced, for example, the intermediate element is a force element. And since the active element 530 and the triggering element 540 are a split structure, the triggering element 540 does not need to slide, the movement resistance can be reduced, so that the operation of pushing the active element 530 is more labor-saving and convenient, and the preliminary opening operation of the multi-foot support is more simple and easy to operate.

[0192] In other embodiments, the active element 530 is directly subjected to external force, in the case that the user directly presses the active element 530, by setting the active element 530 which can slide relative to the support rod assembly 100, indirectly pushing the triggering element 540 to rotate, compared with directly applying external force to the triggering element 540 to make it rotate, the active element 530 does not rotate, reducing the friction of the active element 530 on the user's hand.

[0193] Further, as shown in FIGS. 33, 34, 38 and 39, the triggering element 540 further comprises a rotating part 541, at least three triggering parts 520 are connected to the rotating part 541, the rotating part 541 is rotationally connected to the bottom end of the support rod assembly 100, the active element 530 is screwedly connected with the rotating part 541; the elastic element 600 is a return spring, the return spring is sleeved on the periphery of the active element 530, and is clamped between the force element 550 and the triggering element 540.

[0194] In the embodiment, the rotating part 541 can be a cylindrical, stepped cylindrical or columnar structure. The at least three triggering parts 520 can be corner parts or convex parts protruding from the outer peripheral wall of the rotating part 541. In order to improve the structural strength, in some embodiments, the rotating part 541 is integrally formed with the plurality of triggering elements 540. In order to ensure the rotation reliability of the rotating part 541 and the support rod assembly 100, specifically, the bottom end of the support rod assembly 100 is provided with a mounting cavity, and the rotating part 541 is rotationally arranged in the mounting cavity. The elastic element 600 adopts a return spring, which is elastic, low in cost and easy to install. The return spring can be clamped between the force element 550 and the rotating part 541, for example, a recess is formed on the force element 550, and an abutting wall is arranged in the inner cavity of the rotating part 541, so that one end of the return spring is embedded in the recess of the force element 550, and the other end abuts against the abutting wall of the rotating part 541.

[0195] Further, please refer to FIG. 33, FIG. 34, FIG. 36 and FIG. 40, the movable member 530 comprises a guide portion 531 which extends out of the top end of the touch member 540 and is slidably connected with the bottom end of the support rod assembly 100, the guide portion 531 is provided with a guide slot 110 on one of the support rod assemblies 100 and is provided with a protrusion 532 which is slidably connected with the guide slot 110 on the other support rod assembly 100.

[0196] In the present embodiment, the guide portion 531 extends out of and exposes the top end of the touch member 540 to be slidably connected with the bottom end of the support rod assembly 100. The protrusion 532 can be provided on the peripheral wall of the guide portion 531, the guide slot 110 can be provided on the inner wall of the bottom end of the support rod assembly 100, or the guide slot 110 can be provided on the peripheral wall of the guide portion 531 and the protrusion 532 can be provided on the inner wall of the bottom end of the support rod assembly 100. Through the sliding cooperation of the protrusion 532 and the guide slot 110, the sliding and circumferential limiting cooperation between the movable member 530 and the support rod assembly 100 is realized, that is, the movable member 530 can only slide relative to the support rod assembly 100 but cannot rotate, and thus the touch member 540 can be rotated circumferentially when the movable member 530 slides. The form and number of the protrusion 532 are not limited, for example, the protrusion 532 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 532 are provided and the plurality of protrusions 532 are arranged at intervals in the circumferential direction of the guide portion 531.

[0197] In some implementations, the touch member 540 is mounted on the bottom end of the support rod assembly 100, and the force applying portion protrudes out of the bottom end of the touch member 540 in the initial state. In the state that the at least three support leg assemblies 300 are folded on the support rod assembly 100, the force applying member 526 is accommodated in the space surrounded by the at least three support leg assemblies 300, and the force applying member 526 does not protrude out of the bottom end of the support leg assembly 300.

[0198] In the present example, the multi-leg support occupies a small volume in the storage state, and is more convenient for storage and placement of the multi-leg support; and can also avoid that an object or a person outside the multi-leg support accidentally touches the force applying member in the storage state, for example, causes the support leg assembly 300 to be initially opened due to accidental touch of the force applying member. For another example, in the storage state of the multi-leg support, the force applying member 526 does not protrude out of the bottom end of the support leg assembly 300, and the user can more conveniently hold the bottom end of the at least three support leg assemblies, and the multi-leg support is more convenient to use.

[0199] In the present example, the touch member 540 is mounted on the bottom end of the support rod assembly 100, and the force applying portion protrudes out of the bottom end of the touch member 540 in the initial state to facilitate the user to press the movable member 522 to indirectly drive the touch member 540 to rotate.

[0200] In the example, the user presses the force receiving part of the force receiving member 526, and the force receiving member 526 and the movable member 522 slide towards the sliding sleeve assembly; for example, when the support rod assembly is in the vertical position, the user presses the force receiving part of the force receiving member 526, and the force receiving member 526 and the movable member 522 slide upwards.

[0201] In some embodiments, as shown in FIGS. 1-4, 26, the inner peripheral wall of the support leg assembly 300 is a concave arc surface matched with the outer peripheral wall of the support rod assembly 100, the outer peripheral wall of the support leg assembly 300 is a convex arc surface, and the outer peripheral walls of the at least three support leg assemblies 300 collectively form the outer peripheral surface of the multi-leg support; the at least three support leg assemblies 300 are spliced around the support rod assembly 100.

[0202] In this way, the support leg assembly 300 is roughly in the shape of an arc plate, so that the at least three support leg assemblies 300 can more closely enclose the periphery of the support rod assembly 100 in the folded state. The at least three support leg assemblies 300 are spliced around the support rod assembly 100, that is, the outer peripheral walls of the at least three support leg assemblies 300 can roughly enclose to form a cylindrical surface. In the folded state, the outer peripheral walls of the at least three support leg assemblies 300 collectively form the outer peripheral surface of the multi-leg support, which is more convenient for the user to hold the multi-leg support for use, for example, the user can hold the at least three support leg assemblies 300 for shooting.

[0203] In combination with the aforementioned support leg assembly 300 having the contact surface 310, please further refer to FIGS. 13, 14, 20, 23, 27, 28. Each touch part 520 corresponds to the embodiment between the adjacent two support leg assemblies 300, and further, the contact surface 310 is a flat surface connected between the two side splicing surfaces of the support leg assembly 300. In this way, when the touch part 520 rotates, it can smoothly transition from the splicing surface between the adjacent two support leg assemblies 300 to the contact surface 310, so that the at least three touch parts 520 can smoothly push open the at least three support leg assemblies 300.

[0204] In some embodiments, as shown in FIGS. 5, 6, 9-11, 13-18, 29, 27-36, the support rod assembly 100 includes a support rod body 120 and a mounting member 130 fixedly connected to the bottom end of the support rod body 120, and the sliding sleeve assembly 200 is slidably sleeved on the support rod body 120; the preliminary opening assembly 500 is movably connected to the mounting member 130; and the connecting assembly 400 is rotationally connected to the mounting member 130.

[0205] The mounting member 130 and the support rod body 120 can be fixedly connected by means of screws, interference fitting, rivet connection, etc. The mounting member 130 is provided for connecting the preliminary opening assembly 500 and the connecting assembly 400, so that the bottom end connecting structure of the support rod assembly 100 can be independently formed, thereby reducing the manufacturing cost and facilitating the assembly of the preliminary opening assembly 500 and the support rod assembly 100. Since the support rod body 120 mainly serves as a support and guide, and the mounting member 130 mainly serves as a connecting function, the support rod body 120 and the mounting member 130 can be made of different materials. For example, the support rod body 120 is made of metal to improve the structural strength and reduce the sliding friction with the sliding sleeve assembly 200, and the mounting member 130 is made of plastic to reduce the manufacturing cost of the mounting member 130.

[0206] Specifically, referring to FIGS. 5, 6 and 18, the mounting member 130 includes a first mounting portion 132 and a second mounting portion 133 connected to each other, the first mounting portion 132 is embedded in the bottom end of the support rod body 120, and the second mounting portion 133 is exposed at the bottom end of the support rod body 120; the preliminary opening assembly 500 is movably connected to the first mounting portion 132, and the connecting assembly 400 is movably connected to the second mounting portion 133. The first mounting portion 132 for connecting the preliminary opening assembly 500 is embedded in the bottom end of the support rod body 120, so that the preliminary opening assembly 500 can be partially hidden in the support rod body 120, thereby shortening the overall length of the assembled support rod assembly 100 and the preliminary opening assembly 500, making the overall structure more compact, and avoiding the preliminary opening assembly 500 from contacting the ground when the at least three support leg assemblies 300 are opened to the maximum angle. In order to facilitate the rotational connection between the mounting member 130 and the connecting assembly 400, the connecting assembly 400 includes at least three connecting rods 410, and the mounting member 130 includes a first member and a second member connected to each other, and the connecting rods 410 are rotatably connected to the connecting portion of the first member and the second member. In this way, the assembly of the connecting rods 410 and the mounting member 130 is facilitated.

[0207] In some embodiments, as shown in FIGS. 12-19, the mounting member 130 has an abutting platform 131 protruding from the outer peripheral wall of the support rod body 120, the sliding sleeve assembly 200 comprises a hand-held portion 210 configured to allow the top end of the support rod assembly 100 to protrude therefrom, and the support leg assembly 300 is rotatably connected to the hand-held portion 210; the sliding sleeve assembly 200 further comprises a positioning cylinder 220 connected to the bottom end of the hand-held portion 210, the cross-sectional area of the positioning cylinder 220 is smaller than that of the hand-held portion 210, so as to enclose the at least three support leg assemblies 300; the positioning cylinder 220 is slidingly sleeved on the periphery of the support rod body 120; when the at least three support leg assemblies 300 are opened to the maximum spread state relative to the support rod body 120, the positioning cylinder 220 abuts against the abutting platform 131, and the support rod assembly 100 and the preliminary opening assembly 500 are both located above the bottom end of the support leg assembly 300.

[0208] In this case, the cross-section of the positioning cylinder 220 can be circular, elliptical, etc. The abutting platform 131 can be a circular ring surface, an arc-shaped extending plane or a platform of other shapes, as long as it can abut against the bottom end of the positioning cylinder 220. When the at least three support leg assemblies 300 are in the collapsed state, the hand-held portion 210 of the sliding sleeve assembly 200 is exposed, and the positioning cylinder 220 is wrapped in the at least three support leg assemblies 300, so as to avoid the positioning cylinder 220 interfering with the rotation of the at least three support leg assemblies 300. By making the positioning cylinder 220 abut against the abutting platform 131 of the mounting member 130, the spread angle of the multi-leg support can be prevented from being too large. In practice, the length of the positioning cylinder 220 can be designed to determine the maximum spread angle of the at least three support leg assemblies 300, and the length of the positioning cylinder 220 is not specifically limited herein. When the at least three support leg assemblies 300 are opened to the maximum spread state relative to the support rod body 120, the support rod assembly 100 and the preliminary opening assembly 500 are both located above the bottom end of the support leg assembly 300, so as to avoid the preliminary opening assembly 500 abutting against the ground and causing the multi-leg support to be unstable.

[0209] Referring to FIGS. 18, 19, etc., the support rod assembly 100 further comprises a second fastener 135 fastened to the first mounting portion 132 through the support rod body 120; the sliding sleeve assembly 200 has a sliding cavity 201 slidingly fitted with the support rod assembly 100, the inner wall of the sliding cavity 201 is provided with a sliding bar 211 extending along the sliding direction of the sliding cavity 201; the outer wall of the support rod body 120 is concavely provided with a sliding groove 105, the sliding groove 105 is fitted with the sliding bar 211, and the sliding bar 211 slides in the sliding groove during the sliding of the sliding sleeve assembly 200 along the length direction of the support rod assembly 100; the second fastener 135 comprises a second head portion and a second rod portion connected to the second head portion, the second head portion is accommodated in the sliding groove, and the second rod portion is fastened to the first mounting portion 132 through the support rod body 120; in the state that the sliding sleeve assembly 200 abuts against the support rod assembly 100, the second head portion is accommodated in the sliding cavity 201, and the second head portion is located between the bottom end of the sliding bar 211 and the bottom end of the sliding sleeve assembly 200. Understandably, the sliding sleeve assembly 200 abuts against the mounting member 120, which avoids that the multi-leg support is excessively opened to deform the support leg assembly 300 and the connecting assembly 400, and avoids that the multi-leg support is damaged during use.

[0210] Understandably, the cooperation of the sliding bar 211 and the sliding groove makes the sliding of the sliding sleeve assembly 200 relative to the support rod assembly 100 more stable. Accommodating the second head portion in the sliding groove reduces the possibility of scratching the user, and on the other hand, the sliding groove is used for cooperating with the sliding bar 211 and accommodating the second head portion, which makes the structure of the support rod assembly 100 compact. In the state that the sliding sleeve assembly 200 abuts against the support rod assembly 100, the second head portion is located between the bottom end of the sliding bar 211 and the bottom end of the sliding sleeve assembly 200, which avoids that the second head portion hinders the sliding of the sliding sleeve assembly 200; and the second head portion is accommodated in the sliding cavity 201, which further avoids that the second head portion scratches the user's hand. For example, the number of the sliding bars 211 is 2, and the two sliding bars 211 are located at opposite sides of the sliding cavity 201; the number of the sliding grooves is 2, and the two sliding grooves are located at opposite sides of the support rod body 110; the number of the second fasteners 135 is 2, and the second head portions of the two second fasteners 135 are accommodated in the two sliding grooves, respectively. Understandably, the sliding bar 211 and the sliding groove extend along the sliding direction of the sliding sleeve assembly 200.

[0211] In some embodiments, referring to FIGS. 5, 15 and 17, the outer peripheral wall of the support rod assembly 100 and the inner peripheral wall of the sliding sleeve assembly 200 have a sliding gap. In this way, 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, which makes the multi-leg support open and fold automatically more quickly and conveniently.

[0212] In order to avoid the shaking 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, and the shaking of the support rod assembly 100 and the sliding sleeve assembly 200 when they slide relative to each other is avoided, so that the automatic opening and closing of the multi-leg support is more reliable.

[0213] As shown in FIGS. 5, 6, 15, 16, 20, 23, in combination with the foregoing embodiments, further, the closing force that the support leg assembly 300 is subjected to and that keeps it closed to the support rod assembly 100 is magnetic attraction.

[0214] In the process of at least three support leg assemblies 300 being opened to being closed to the support rod assembly 100, the magnetic attraction is used to promote the closing of the at least three support leg assemblies 300 to the support rod assembly 100; when the at least three support leg assemblies 300 are in the state of being closed to the support rod assembly 100, the magnetic attraction is used to keep the at least three support leg assemblies 300 closed to the support rod assembly 100.

[0215] In the present example, by making the closing force that the support leg assembly 300 is subjected to magnetic attraction, compared with other ways, due to the action of the magnetic field, in the process of at least three support leg assemblies 300 being opened to being closed to the support rod assembly 100, the magnetic attraction can promote the closing of the at least three support leg assemblies 300 to the support rod assembly 100, so that the process of the automatic closing of the at least three support leg assemblies 300 to the support rod assembly 100 is faster and smoother, and the at least three support leg assemblies 300 can eventually be more closely attracted to the support rod assembly 100. And because the closing force that the support leg assembly 300 is subjected to is magnetic attraction, compared with the way in which the closing force is clamping force, the at least three support leg assemblies 300 can be more smoothly pried open when the at least three actuating portions 520 are rotated, avoiding the situation of accidental jamming.

[0216] In some embodiments, referring again to FIGS. 5, 6, 15-17, 20, 23, 24, the connecting assembly 400 includes at least three connecting rods 410 corresponding one-to-one to the support leg assemblies 300, one end of the connecting rod 410 being rotationally connected to the bottom end of the support rod assembly 100, and the other end being rotationally connected to the support leg assembly 300; in the closed state, the support leg assembly 300 is magnetically attracted to the connecting rod 410.

[0217] The connecting rod 410 and the bottom end of the support rod assembly 100, and the connecting rod 410 and the support foot assembly 300 can be rotatably connected through a rotating shaft and a shaft hole. For example, a connecting notch 140 is arranged at the bottom end of the support rod assembly 100, so that the connecting rod 410 is hingedly connected to the connecting notch 140 through a rotating shaft or a lug. A connecting part 390 with a shaft hole is arranged on the inner wall of the support foot assembly 300, so that the connecting rod 410 is hingedly connected to the shaft hole through a rotating shaft or a lug. Of course, the connecting rod 410 and the support rod assembly 100 and the support foot assembly 300 can also be rotatably connected in other ways, which are not limited here. Specifically, one end of the connecting rod 410 is rotatably connected to the support foot assembly 300, and the other end is rotatably connected to the bottom end of the support rod assembly 100. In this way, the overall structure can be compact while enabling the sliding sleeve assembly 200 to be opened and folded by the connecting assembly 400. For example, the top end of the connecting rod 410 is rotatably connected to the support foot assembly 300, and the bottom end is rotatably connected to the bottom end of the support rod assembly 100.

[0218] The connecting assembly 400 includes at least three connecting rods 410, and the at least three connecting rods 410 are arranged one-to-one corresponding to the support foot assemblies 300, which can simplify the structure of the connecting assembly 400 while enabling the at least three support foot assemblies 300 to be opened and folded synchronously. Since the connecting rod 410 is closer to the support foot assembly 300 than the support rod assembly 100, by magnetically attracting the support foot assembly 300 to the connecting rod 410, the magnetic attraction surfaces of the two can be closer than when the support foot assembly 300 is magnetically attracted to the support rod assembly 100, so that the magnetic attraction folding effect of the at least three support foot assemblies 300 is better, and the at least three support foot assemblies 300 can be effectively prevented from being accidentally spread out.

[0219] Specifically, the inner wall surface of the bottom end of the support foot assembly 300 is provided with a magnetic body 330, the magnetic body 330 is made of a permanent magnetic material, and the connecting rod 410 is at least partially made of a soft magnetic material or a permanent magnetic material; in the folded state, the magnetic body 330 magnetically attracts the corresponding connecting rod 410.

[0220] The permanent magnetic material can be neodymium iron boron, ferrite magnet, aluminum-nickel-cobalt permanent magnet alloy, iron-chromium-cobalt permanent magnet alloy, permanent ferrite, rare earth permanent magnetic material, and composite permanent magnetic material, etc. The soft magnetic material can be cast iron, silicon steel, low-carbon steel, alloy steel, soft magnetic ferrite, or cobalt alloy material that can be adsorbed by the magnetic body 330, etc. The size, shape, and number of the magnetic body 330 can also be selected and designed according to requirements, which are not specifically limited here. The magnetic body 330 can be fixedly connected to the inner wall surface of the support leg assembly 300 in many ways, such as by embedding, clamping, bonding, etc. The magnetic body 330 is correspondingly arranged with the connecting rod 410, so that the magnetic attraction force of the two is maximized, thereby achieving better magnetic attraction effect. The connecting rod 400 includes a soft magnetic body and a plating layer, the soft magnetic body is made of soft magnetic material, and the plating layer is attached to the soft magnetic body.

[0221] In some embodiments, referring to FIGS. 1-4 and 26, the inner circumferential wall of the support leg assembly 300 is a concave arc surface matched with the outer circumferential wall of the support rod assembly 100, and the outer circumferential wall of the support leg assembly 300 is a convex arc surface. In the folded state, the side walls of the adjacent two support leg assemblies 300 are spliced with each other, the outer circumferential walls of the at least three support leg assemblies 300 jointly form the outer circumferential surface of the multi-leg support, and the connection portions of the outer circumferential walls of the adjacent two support leg assemblies 300 are recessed to form the anti-pinch groove 340.

[0222] In this way, the support leg assembly 300 is roughly arc-shaped and plate-shaped, so that the at least three support leg assemblies 300 can more closely surround the periphery of the support rod assembly 100 in the folded state. The side walls of the adjacent two support leg assemblies 300 are spliced with each other, so that the outer circumferential walls of the at least three support leg assemblies 300 can roughly surround to form a cylindrical surface. In the folded state, the outer circumferential walls of the at least three support leg assemblies 300 jointly form the outer circumferential surface of the multi-leg support, which is more convenient for the user to hold and use the multi-leg support, for example, the user can hold the at least three support leg assemblies 300 to take a photo. The connection portions of the outer circumferential walls of the adjacent two support leg assemblies 300 are recessed to form the anti-pinch groove 340, which can avoid pinching the hand of the user when holding the at least three support leg assemblies 300.

[0223] In some embodiments, as shown in FIGS. 12-14, 20, 22, 28, the support leg assembly 300 is in the shape of an arc plate, and the side walls of two adjacent support leg assemblies 300 are spliced with each other in the collapsed state. One of the side walls of the two adjacent support leg assemblies 300 is provided with a plurality of positioning slots 350 arranged in the extension direction of the support leg assembly 300, and the other side wall is provided with a plurality of positioning protrusions 360 matched with the positioning slots 350. In this example, the outer peripheral walls of the at least three support leg assemblies 300 can substantially enclose a cylindrical surface, which is more convenient for a user to hold the multi-leg support. By matching the spliced side walls of the two adjacent support leg assemblies 300 through the positioning slots 350 and the positioning protrusions 360, 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 by the magnetic attraction force. Therefore, the at least three support leg assemblies 300 can be collapsed to have the outer peripheral walls substantially on one cylindrical surface, so as to improve the flatness of the outer surface of the multi-leg support after being quickly collapsed.

[0224] In some embodiments, in the collapsed state of the at least three support leg assemblies 300, the height of the force receiving portion 510 protruding from the support leg assembly 300 is greater than or equal to 1 mm, so that the rotation angle of the at least three triggering portions 520 is greater than or equal to 1 degree when the force receiving portion 510 is subjected to external action.

[0225] It can be understood that, in the collapsed state, the height of the force receiving portion 510 protruding from the support leg assembly 300 is positively correlated with the rotation angle of the triggering portion 520 within a certain range. By limiting the height of the force receiving portion 510 protruding from the support leg assembly 300 to be greater than or equal to 1 mm in the collapsed state, and the rotation angle of the at least three triggering portions 520 to be greater than or equal to 1 degree when the force receiving portion 510 is subjected to external action, the angle of the multi-leg support after being initially opened can be avoided to be too small, i.e., the angle of the at least three triggering portions 520 pushing open the at least three support leg assemblies 300 is relatively large, so that the at least three support leg assemblies 300 are more likely to be automatically unfolded under the action of gravity.

[0226] In some embodiments, as shown in FIGS. 25-27, the multi-leg support further comprises a supporting member 700 for supporting an electronic terminal, and the supporting member 700 is connected to the top end of the support rod assembly 100. The supporting member 700 can be extended from the top end of the holding portion 210 when the at least three support leg assemblies 300 are in the collapsed state or in the unfolded state, so as to fix the electronic terminal. The electronic terminal can be a mobile phone, a tablet, a camera, etc.

[0227] In other examples, the multi-leg support is also used to support a fill light, a remote controller, a camera, and other shooting auxiliary supplies.

[0228] In the embodiment, the supporting member 700 is used to support an electronic terminal such as a mobile phone. In order to improve the versatility of the multi-leg stand, the support rod assembly 100 is exemplarily provided as a multi-section telescopic rod, so that the user can adjust the height of the supporting member 700 according to the use requirement. In order to facilitate the adjustment of the angle of the electronic terminal, the supporting member 700 is exemplarily rotatably connected to the top end of the support rod assembly 100, so as to facilitate the adjustment of the use angle and direction of the electronic terminal. For example, the supporting member 700 can be rotatably connected to the top end of the support rod assembly 100 about a horizontal axis perpendicular to the extension direction of the support rod assembly, so as to facilitate the adjustment of the angle. For another example, the supporting member 700 can be rotatably connected to the top end of the support rod assembly 100 about a vertical axis parallel to the extension direction of the support rod assembly, so as to facilitate the adjustment of the angle. Alternatively, the supporting member 700 can be universally rotatably connected to the top end of the support rod assembly 100, so as to facilitate the 360-degree adjustment of the direction and angle.

[0229] When the at least three supporting leg assemblies 300 are in the unfolded state, the supporting member 700 is extended from the top end of the handheld assembly 210, and the user can fix the electronic terminal to the supporting member 700 to achieve stable shooting. When the at least three supporting leg assemblies 300 are in the folded state, the supporting member 700 can be wholly or partially hidden in the handheld assembly, so that the multi-leg stand has a smaller storage space and a more simple and elegant appearance. For example, the supporting member 700 comprises a supporting body and a top plate, and when the at least three supporting leg assemblies 300 are in the folded state, the supporting body is completely accommodated in the support rod assembly 100, and the top plate covers the top opening of the support rod assembly 100. In this way, the multi-leg stand has a substantially cylindrical shape in the folded state, has a more simple appearance, and can further reduce the storage space.

[0230] Exemplarily, the supporting member 700 can be a clamp for clamping the electronic terminal, the clamp comprises a clamp body and two clamping portions, the two clamping portions are respectively clamped to opposite two sides of the electronic terminal, the clamp body can be elastically telescopic to adjust the clamping width of the clamp, and the clamping portions can be accommodated in the clamp body.

[0231] Exemplarily, the supporting member 700 is a suction cup for suctioning the electronic terminal, for example, the suction cup can be suctioned to the back of the electronic terminal.

[0232] Exemplarily, the supporting member 700 is a magnetic member for magnetically attracting the electronic terminal, and the magnetic member can be an electromagnet or a permanent magnet.

[0233] Exemplarily, the supporting member 700 is a tray for supporting the electronic terminal, and the electronic terminal is placed on the tray.

[0234] Exemplarily, the supporting member 700 is a clamping member for clamping the electronic terminal.

[0235] The embodiment of the present application also provides a use method of the multi-leg support, wherein the multi-leg support adopts the multi-leg support of any one of the foregoing embodiments, and the use steps of the multi-leg support are as follows.

[0236] The opening step of the multi-leg support: when the multi-leg support is in the folded state, the user holds the hand-held part 210, hits or presses the ground, a table top or other support surface with the force receiving part 510 of the multi-leg support, drives the preliminary opening assembly 500 to open at least three support leg assemblies 300, so that the multi-leg support changes from the folded state to the preliminary opening state; the user releases the hand-held part 210, and the sliding sleeve assembly 200 slides downward under the gravity and inertia of the sliding sleeve assembly 200, the at least three support leg assemblies 300 and the connecting assembly 400, drives the at least three support leg assemblies 300 to open to the maximum.

[0237] The folding step of the multi-leg support: when the multi-leg support is in the open state, the user holds and lifts the hand-held part 210 upward, the support rod assembly 100 slides downward relative to the sliding sleeve assembly 200, drives the at least three support leg assemblies 300 to fold quickly through the connecting assembly 400, and the at least three support leg assemblies 300 are kept folded on the support rod assembly 100 through the folding force.

[0238] The multi-leg support and the use method of the multi-leg support can realize the opening and folding operation of the multi-leg support by one hand, greatly simplify the opening and folding steps of the multi-leg support, reduce the operation difficulty of the opening and folding of the multi-leg support, and greatly improve the opening operation convenience of the multi-leg support.

[0239] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not drive the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-leg support comprising a support rod assembly, a sliding sleeve assembly, a connecting assembly and at least three support leg assemblies, the support rod assembly extending along a length direction thereof, the sliding sleeve assembly slidably sleeved on an outer periphery of the support rod assembly along the length direction of the support rod assembly, the support leg assemblies rotatably connected to the sliding sleeve assembly, the connecting assembly rotatably connecting the support leg assemblies and the support rod assembly, the connecting assembly configured to linkedly spread or fold the at least three support leg assemblies when the sliding sleeve assembly slides relative to the support rod assembly; characterized in that, in a state that the at least three support leg assemblies are folded to the support rod assembly, the support leg assemblies are subjected to a folding force that keeps the support leg assemblies folded to the support rod assembly; the multi-leg support further comprises a preliminary opening assembly movably connected to the support rod assembly; the preliminary opening assembly is configured to, when subjected to an external action, overcome the folding force and push open the at least three support leg assemblies, so that the at least three support leg assemblies change from the folded state to a preliminary opened state relative to the support rod assembly.

2. The multi-legged support of claim 1, wherein, when the at least three support leg assemblies are in the preliminary opened state relative to the support rod assembly, a self-weight of a moving assembly facilitates the sliding of the sliding sleeve assembly to spread the at least three support leg assemblies relative to the support rod assembly; the moving assembly comprises the sliding sleeve assembly, the at least three support leg assemblies and the connecting assembly; the sliding sleeve assembly comprises a hand holding portion configured to allow a top end of the support rod assembly to extend out, the support leg assemblies are rotatably connected to the hand holding portion; the at least three support leg assemblies are configured to, when a user lifts the hand holding portion, the at least three support leg assemblies are folded relative to the support rod assembly and are folded to the support rod assembly by the folding force.

3. The multi-legged support of claim 2, wherein, in the process that the user lifts the hand holding portion to fold the at least three support leg assemblies, a self-weight of the at least three support leg assemblies facilitates the folding of the at least three support leg assemblies, an inertia of the at least three support leg assemblies facilitates the folding of the at least three support leg assemblies, a self-weight of the support rod assembly facilitates the folding of the at least three support leg assemblies, an inertia of the support rod assembly facilitates the folding of the at least three support leg assemblies.

4. The multi-legged support of claim 1, wherein, the preliminary opening assembly has a force receiving portion exposed relative to the support leg assemblies in the folded state; the preliminary opening assembly comprises at least three touch portions located at a bottom end of the support rod assembly, the external action comprises an action force applied to the force receiving portion along a first direction, the at least three touch portions are configured to rotate about a rotation axis to preliminarily open the at least three support leg assemblies when the at least three touch portions apply the external action to the force receiving portion; the first direction is along the rotation axis.

5. The multi-legged support of claim 4, wherein, At least three support leg assemblies are enclosed by the support rod assembly when the at least three support leg assemblies are in the collapsed state, the number of at least three trigger portions corresponds to the number of at least three support leg assemblies, each of the trigger portions is located between two adjacent support leg assemblies, and the inner wall surface of the support leg assembly is provided with a contact surface between two adjacent trigger portions, the contact surface is configured to contact the trigger portions and gradually preliminarily open the at least three support leg assemblies when the at least three trigger portions rotate.

6. The multi-legged support of claim 5, wherein, The contact surfaces of the at least three support leg assemblies form a rotating space, and the cross-sectional area of the rotating space gradually decreases from the bottom to the top.

7. The multi-legged support of claim 4, wherein, The preliminary opening assembly is screw-coupled with the support rod assembly.

8. The multi-legged support of claim 7, wherein, The preliminary opening assembly includes a movable member, a trigger member, and a force member, the trigger member is provided with at least three trigger portions, the movable member is screw-coupled with the support rod assembly. When the preliminary opening assembly is subjected to an external action, the movable member is screw-coupled with the support rod assembly to drive the trigger portions to open the corresponding support leg assemblies and gradually preliminarily open the at least three support leg assemblies. The preliminary opening assembly further includes a force member, the movable member and the force member are respectively arranged on two sides of the trigger member, and the bottom end of the force member forms the force portion. The multi-leg support further includes an elastic member configured to provide an elastic force to the movable member to drive the preliminary opening assembly to return to the initial position by the elastic force after the external action is removed.

9. The multi-legged support of claim 4, wherein, The preliminary opening assembly further includes a movable member, a trigger member, and a force member, the movable member is slidingly coupled with the support rod assembly and is circumferentially limited to the rotation axis of the movable member. The trigger member is provided with at least three trigger portions, the force member is fixedly connected to the bottom of the movable member, and the bottom end of the force member forms the force portion. The movable member is screw-coupled with the trigger member to drive the trigger member to rotate around the rotation axis when the force portion is subjected to an external action. The multi-leg support further includes an elastic member configured to provide an elastic force to the movable member to drive the movable member to return to the initial position by the elastic force after the external action is removed.

10. The multi-legged support of claim 9, wherein, The trigger member further includes a rotating portion, the at least three trigger portions are connected to the rotating portion, the rotating portion is rotationally connected to the support rod assembly, and the movable member is screw-coupled with the rotating portion. The elastic member is a return spring, the return spring is sleeved on the periphery of the movable member and is clamped between the force member and the trigger member.

11. The multi-legged support of claim 9, wherein, The movable member includes a guide portion, the guide portion protrudes from the top end of the trigger member and is slidingly connected to the bottom end of the support rod assembly, the guide portion and one of the support rod assembly are provided with a guide groove, and the other is provided with a protrusion that can be slidingly connected to the guide groove.

12. The multi-legged support of claim 4, wherein, The preliminary opening assembly includes a trigger member, the trigger member is a polygonal structure, and the at least three trigger portions are at least three corners of the polygonal structure.

13. The multi-legged support of claim 5, wherein, The inner circumferential wall of the support leg assembly is a concave arc surface matched with the outer circumferential wall of the support rod assembly, the outer circumferential wall of the support leg assembly is a convex arc surface, and the outer circumferential walls of the at least three support leg assemblies jointly form the outer circumferential surface of the multi-leg support; the at least three support leg assemblies are spliced around the support rod assembly, and the contact surface is a plane connected between the two side splicing surfaces of the support leg assembly.

14. The multi-legged support of claim 1, wherein, The support rod assembly comprises a support rod body and a mounting member fixedly connected to the bottom end of the support rod body, and the sliding sleeve assembly is slidably sleeved on the support rod body; the preliminary opening assembly is movably connected to the mounting member; and the connecting assembly is rotationally connected to the mounting member.

15. The multi-legged support of claim 14, wherein, The mounting member has an abutting table surface protruding from the outer circumferential wall of the support rod body, The sliding sleeve assembly comprises a hand-held portion configured to allow the top end of the support rod assembly to protrude therefrom, and the support leg assembly is rotationally connected to the hand-held portion; The sliding sleeve assembly further comprises a positioning cylinder connected to the bottom end of the hand-held portion, the cross-sectional area of the positioning cylinder is smaller than that of the hand-held portion, so as to enclose the at least three support leg assemblies; and the positioning cylinder is slidably sleeved on the periphery of the support rod body. When the at least three support leg assemblies are opened to the maximum unfolded state relative to the support rod body, the positioning cylinder abuts against the abutting table surface; and when the at least three support leg assemblies are opened to the maximum unfolded state relative to the support rod body and supported on a support surface, the support rod assembly and the preliminary opening assembly are both located above the support surface.

16. The multi-legged support of claim 2, wherein, The outer circumferential wall of the support rod assembly and the inner circumferential wall of the sliding sleeve assembly have a sliding gap therebetween.

17. The multi-legged support of claim 2, wherein, The folding force acting on the support leg assembly to keep it folded on the support rod assembly is an adsorption force or a magnetic attraction force.

18. The multi-legged support of claim 3, wherein, The folding force acting on the support leg assembly to keep it folded on the support rod assembly is a magnetic attraction force; During the process of unfolding the at least three support leg assemblies to folding on the support rod assembly, the magnetic attraction force is used to facilitate the folding of the at least three support leg assemblies on the support rod assembly. When the at least three support leg assemblies are in the state of being folded on the support rod assembly, the magnetic attraction force is used to keep the at least three support leg assemblies folded on the support rod assembly.

19. The multi-legged support of claim 18, wherein, The connecting assembly comprises at least three connecting rods corresponding to the support leg assemblies one by one, one end of the connecting rod is rotationally connected to the bottom end of the support rod assembly, and the other end is rotationally connected to the support leg assembly; in the folded state, the support leg assembly is magnetically connected with the connecting rod.

20. The multi-legged support of claim 19, wherein, The inner wall surface of the bottom end of the support leg assembly is provided with a magnetic body made of a permanent magnetic material, and the connecting rod is made of a soft magnetic material or a permanent magnetic material; in the folded state, the magnetic body magnetically attracts the corresponding connecting rod. The inner wall surface of the bottom end of the support leg assembly is provided with a magnetic body made of a permanent magnetic material, and the connecting rod is made of a soft magnetic material or a permanent magnetic material; in the folded state, the magnetic body magnetically attracts the corresponding connecting rod.

21. The multi-legged support of claim 18, wherein, The inner circumferential wall of the support leg assembly is a concave arc surface matched with the outer circumferential wall of the support rod assembly, the outer circumferential wall of the support leg assembly is a convex arc surface, the side walls of two adjacent support leg assemblies are spliced with each other in the folded state, the outer circumferential walls of at least three support leg assemblies jointly form the outer circumferential surface of the multi-leg support, and the connecting portions of the outer circumferential walls of two adjacent support leg assemblies are recessed to form anti-pinch grooves.

22. The multi-legged support of claim 18, wherein, The support leg assembly is in the shape of an arc plate, the side walls of two adjacent support leg assemblies are spliced with each other in the folded state; one of the side walls of two adjacent support leg assemblies is provided with a plurality of positioning slots arranged at intervals along the extension direction of the support leg assembly, and the other side wall is provided with positioning protrusions matched with the plurality of positioning slots.

23. The multi-legged support of claim 8, wherein, When the at least three support leg assemblies are in the folded state, the height of the force receiving portion protruding from the support leg assembly is greater than or equal to 1 mm, so that the rotation angle of the at least three touch triggering portions is greater than or equal to 1 degree when the force receiving portion is subjected to external force.

24. The multi-legged support according to claim 1, wherein, The multi-leg support further comprises a supporting member for supporting an electronic terminal, the supporting member is connected to the top end of the support rod assembly, and the supporting member can be extended by the top end of the handheld portion to support the electronic terminal when the at least three support leg assemblies are in the unfolded state.

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