Supporting leg assembly and photographing supporting frame

Abstract

The utility model discloses a supporting leg assembly and a photography support frame, the supporting leg assembly comprises a telescopic pipe assembly, the telescopic pipe assembly comprises an outer pipe, a first inner pipe arranged in the outer pipe in a penetrating manner and a second inner pipe arranged in the first inner pipe in a penetrating manner, the first inner pipe can slide relative to the outer pipe along the axial direction, and the second inner pipe can slide relative to the first inner pipe along the axial direction; the supporting leg assembly further comprises a first locking assembly, the first locking assembly comprises a locking sleeve, the locking sleeve is connected with one end of the outer pipe, a gap is formed between the locking sleeve and the second inner pipe, the abutting assembly is connected with one end of the first inner pipe, the abutting assembly is in linkage with the first inner pipe, and the inner wall of the abutting assembly is tightly attached to the second inner pipe. The side wall of the abutting assembly is embedded into a gap between the locking sleeve and the second inner pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to photography and video recording technical field, especially a support foot subassembly and photography support frame. BACKGROUND

[0002] With the increasing demand of photography and video creation, various kinds of photography auxiliary equipment emerge in endlessly. As one of the common auxiliary equipment, photography support frame can provide stable support for camera or other shooting device, effectively reducing the picture shaking problem caused by handheld or unstable platform.

[0003] The common photography support frame on the market mainly includes single tripod, tripod and part of special support structure, these products usually realize multi-angle, multi-height support adjustment of shooting equipment through the unfolding and folding of multiple support foot subassemblies. The existing support foot subassembly adopts multi-section rod body structure, realizes the adjustment of height or angle through the telescopic cooperation between the rod bodies, and is fixed by combining mechanical buckle, thread locking or lever mechanism and the like.

[0004] However, these traditional locking assemblies, while realizing stable clamping, often have problems of complex structure, high processing technology requirement and large cost. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a support foot subassembly, which aims to solve the problems of complex structure, high processing technology requirement and large cost of the existing locking assemblies.

[0006] To achieve the above purpose, the utility model provides a support foot subassembly for supporting equipment, which comprises:

[0007] A telescopic pipe assembly comprises an outer pipe, a first inner pipe arranged in the outer pipe and a second inner pipe arranged in the first inner pipe, the first inner pipe can slide relative to the outer pipe in the axial direction, and the second inner pipe can slide relative to the first inner pipe in the axial direction;

[0008] The support foot subassembly further comprises a first locking assembly, which comprises:

[0009] A locking sleeve is connected with one end of the outer pipe, and there is a gap between the locking sleeve and the second inner pipe;

[0010] A stop component is connected with one end of the first inner pipe, the stop component is linked with the first inner pipe and tightly contacts the inner wall of the second inner pipe, and the side wall of the stop component is embedded in the gap between the locking sleeve and the second inner pipe.

[0011] In some embodiments, the inner wall of the locking sleeve and the outer wall of the stop component both have taper.

[0012] In some embodiments, the abutting assembly comprises:

[0013] a first bushing connected to one end of the first inner tube, a circumferential wall of the first bushing being configured with a plurality of mounting notches spaced along a circumferential direction of the first bushing;

[0014] an abutting block mounted in each of the mounting notches;

[0015] wherein the abutting block is configured to abut against the second inner tube under the abutting action of the locking sleeve.

[0016] In some embodiments, further comprising a third inner tube and a fourth inner tube successively sleeved, the third inner tube being arranged in the second inner tube;

[0017] The support leg assembly further comprises a second locking assembly arranged at one end of the second inner tube and the third inner tube, the structure of the second locking assembly being identical to that of the first locking assembly.

[0018] In some embodiments, further comprising a driving mechanism, the driving mechanism comprising a first driving member arranged at the other end of the outer tube, an execution end of the first driving member extending into the other end of the outer tube and the first inner tube, the first driving member being used to drive the first inner tube to move.

[0019] In some embodiments, the first driving member comprises:

[0020] a mounting shell, a top wall of the mounting shell being configured with a first opening, and a bottom wall of the mounting shell being configured with a second opening;

[0021] a piston assembly, the piston assembly comprising:

[0022] a fixing seat mounted in the first opening and extending at least partially into the first cavity;

[0023] a piston sleeve slidingly arranged in the first cavity and sleeved on the portion of the fixing seat extending into the first cavity, the fixing seat and the piston sleeve forming a second cavity for containing fluid therebetween;

[0024] one end of the piston sleeve opposite to the fixing seat being connected to one end of the first inner tube through the second opening.

[0025] In some embodiments, the piston assembly further comprises an elastic member arranged in the first cavity, the elastic member being used to elastically support the piston sleeve.

[0026] In some embodiments, the driven mechanism further comprises a second driving member coupled with the first driving member, the second driving member is arranged at one end of the second inner tube, an execution end of the second driving member extends into the second inner tube and is connected with one end of the third inner tube, the second driving member is used to drive the third inner tube to move axially relative to the second inner tube, wherein the structure of the second driving member is consistent with the first driving member.

[0027] In some embodiments, a third opening in communication with the second cavity is formed on the fixing seat, and a fourth opening in communication with the second cavity is formed on a side wall of the piston sleeve.

[0028] The third opening is used to be connected with an operating component, and the fourth opening is connected with the second driving member through a fluid pipeline.

[0029] The utility model further provides a photography support frame, including operating component, receiving seat and a plurality of support foot subassembly of preceding embodiment, receiving seat is connected with the telescopic rod subassembly of a plurality of support foot subassembly, receiving seat is used for installing photographic equipment;

[0030] The operating component is connected with the driving mechanism of each support foot subassembly, and the operating component is used to output driving force to the driving mechanism of each support foot subassembly.

[0031] The utility model technical scheme has the advantages that the axial movement of the first inner tube drives the abutting component to move, so that the side wall of the abutting component can be naturally embedded in the reserved gap between the locking sleeve and the second inner tube, thereby forming a stable locking effect; in this way, not only the complex parts in the traditional support foot are saved, but also the overall structure is more simple and compact, and the machining precision requirement of the parts is reduced; at the same time, since the abutting component is coupled with the first inner tube, the assembly process of the whole support foot subassembly becomes simple and intuitive, without complex assembly process, the production efficiency is improved, and the manufacturing cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is an overall structural schematic view of an embodiment of the support foot subassembly of the utility model;

[0033] Figure 2 It is a front view of an embodiment of the support foot subassembly of the utility model;

[0034] Figure 3 It is Figure 2 a sectional view at E-E;

[0035] Figure 4 It is Figure 3 an enlarged view at A;

[0036] Figure 5 is an exploded view of the first locking assembly;

[0037] Figure 6 is an enlarged view of B in the middle; Figure 3

[0038] Figure 7 is an enlarged view of C in the middle; Figure 3

[0039] Figure 8 is an exploded view of the first driving member;

[0040] Figure 9 is an enlarged view of D in the middle; Figure 3

[0041] Figure 10 is another perspective view of the support leg assembly according to an embodiment of the present application.

[0042] BRIEF DESCRIPTION OF THE DRAWINGS

[0043] 100, telescopic tube assembly; 110, outer tube; 111, first inner tube; 112, second inner tube;

[0044] 201, first locking assembly;

[0045] 210, locking sleeve;

[0046] 211, abutting assembly; 212, first bushing; 212a, mounting gap;

[0047] 213, abutting block;

[0048] 113, third inner tube;

[0049] 114, fourth inner tube;

[0050] 202, second locking assembly;

[0051] 301, first driving member; 302, mounting shell; 321, first cavity; 302a, first opening; 302b, second opening;

[0052] 310, piston assembly; 311, fixed seat; 311c, third opening; 312, piston sleeve; 311d, fourth opening; 322, second cavity; 313, elastic member;

[0053] 320, second driving member;

[0054] 400, fluid conduit.

[0055] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION​​​

[0056] The embodiments of the present application will be described in detail below with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0057] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0058] It should also be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be a middle element.

[0059] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, 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.

[0060] With the increasing demand for photography, video shooting and other professional image creation, the importance of various types of stable support equipment is increasingly prominent. As the core auxiliary device of professional shooting, the photography support frame can provide a stable and reliable support platform for cameras, video cameras and other equipment, effectively eliminate the inevitable shaking problem in handheld shooting, and significantly improve the imaging quality.

[0061] The photography support system on the market at present mainly includes single leg, tripod and special support device under specific scene, these products generally adopt multi-section telescopic support leg structure, through the telescopic and angle adjustment of the support leg, realize the multi-dimensional stable support to the shooting equipment. The existing support leg assembly mostly adopts multi-stage sleeve design, relies on the telescopic cooperation between the sleeves to complete the height adjustment, and realizes the position fixing in combination with friction locking, threaded fastening or quick locking mechanism.

[0062] However, these traditional locking structures, while providing reliable locking functions, often have problems such as complex mechanism, large number of parts, high machining precision requirement, and high production cost, and it is difficult to balance the operation convenience and locking stability. In order to solve the above problems, the utility model provides a support foot assembly which is simple in structure, convenient to operate and reliable in locking.

[0063] With reference Figures 1 to 5 The utility model embodiment provides a support foot assembly for supporting equipment, which comprises:

[0064] The telescopic pipe assembly 100 comprises an outer pipe 110, a first inner pipe 111 arranged in the outer pipe 110, and a second inner pipe 112 arranged in the first inner pipe 111, the first inner pipe 111 being axially slidable relative to the outer pipe 110, and the second inner pipe 112 being axially slidable relative to the first inner pipe 111;

[0065] The support foot assembly further comprises a first locking assembly 201, which comprises:

[0066] The locking sleeve 210 is connected to one end of the outer pipe 110, and there is a gap between the locking sleeve 210 and the second inner pipe 112;

[0067] The abutting assembly 211 is connected to one end of the first inner pipe 111, and the abutting assembly 211 is linked with the first inner pipe 111 and tightly abuts the second inner pipe 112 on the inner wall, and the side wall of the abutting assembly 211 is embedded in the gap between the locking sleeve 210 and the second inner pipe 112.

[0068] In the embodiment, the telescopic pipe assembly 100 is the core structure of the support foot assembly and is mainly used to provide height adjustment function and load bearing capacity. The telescopic pipe assembly 100 adopts a three-stage sleeve design, comprising an outer pipe 110, a first inner pipe 111 arranged in the outer pipe 110, and a second inner pipe 112 arranged in the first inner pipe 111. The outer pipe 110 can be made of high-strength aluminum alloy material, which not only ensures sufficient structural strength but also realizes overall lightweight design, and the outer surface thereof can be provided with anti-slip texture to improve the comfort and stability when a user holds it. The first inner pipe 111 can smoothly slide axially relative to the outer pipe 110 to realize first-stage telescopic adjustment, and the first inner pipe 111 can also be made of aluminum alloy or high-modulus carbon fiber composite material to reduce self-weight while maintaining good rigidity and bending resistance. The outer pipe 110 and the first inner pipe 111 are processed to ensure proper gap fit, which not only ensures smooth sliding without resistance but also avoids obvious shaking during telescopic movement. The second inner pipe 112 is arranged inside the first inner pipe 111 and can freely slide axially relative to the first inner pipe 111 to form a second-stage telescopic adjustment mechanism.

[0069] The first locking assembly 201 undertakes the key locking function in this embodiment, and its structure is simple. Specifically, the locking sleeve 210 is fixedly connected with one end of the outer tube 110, and can be made of high-strength engineering plastic or light metal material, and has a cylindrical shape with an inner diameter slightly larger than the outer diameter of the second inner tube 112, forming a certain annular gap. The abutting assembly 211 is firmly connected with one end of the first inner tube 111 and moves synchronously with the first inner tube 111, and its inner wall closely fits the second inner tube 112 to ensure stability during movement.

[0070] The outer sidewall of the abutting assembly 211 can be designed as a tapered or gradually changing structure to facilitate accurate embedding in the annular gap between the locking sleeve 210 and the second inner tube 112. When the sidewall of the abutting assembly 211 is completely embedded in the gap, radial extrusion force is generated through the wedge effect, causing the second inner tube 112 to be firmly locked; on the contrary, when the abutting assembly 211 at least partially exits from the gap, the radial extrusion force disappears, and the second inner tube 112 can freely slide to achieve an unlocked state.

[0071] In actual use scenarios, for example, when a photographer needs to adjust the height of the support leg assembly, the first drive member 301 can be operated to drive the first inner tube 111 to move in the first direction (e.g., downward direction), which synchronously drives the abutting assembly 211 firmly connected with the first inner tube 111 to move in the same direction, causing the tapered sidewall of the abutting assembly 211 to gradually exit from the annular gap between the locking sleeve 210 and the second inner tube 112. As the abutting assembly 211 exits, the radial extrusion force of the abutting assembly 211 on the second inner tube 112 gradually decreases until the locking state is completely released.

[0072] After unlocking is completed, the second inner tube 112 can freely slide under the action of external force. This external force can be gravity (when the support leg is placed vertically), or a pushing and pulling force applied by the user to adjust the height. The user can slide the second inner tube 112 to the desired position according to the shooting requirements, and flexibly adjust the support height. It is worth noting that even in the completely unlocked state, the second inner tube 112 will not suddenly slide down due to looseness, but will maintain a moderate sliding resistance to ensure safe and controllable adjustment.

[0073] When the second inner tube 112 is adjusted to the desired position, the user operates the component to reset the first driving member 301, and drives the first inner tube 111 to move in the axial second direction (usually upward direction). This movement drives the abutting assembly 211 to reinsert into the annular gap between the locking sleeve 210 and the second inner tube 112. As the insertion depth increases, the tapered side wall of the abutting assembly 211 gradually exerts radial extrusion force on the second inner tube 112, and finally achieves firm locking. Compared with the traditional structure, the number of parts is significantly reduced, greatly reducing the machining precision requirements and assembly difficulty of the parts. At the same time, the linkage design of the abutting assembly 211 and the first inner tube 111 avoids complex transmission mechanisms, reduces potential failure points, and improves product reliability and service life.

[0074] The embodiment utilizes the simple axial movement of the first inner tube 111 to drive the abutting assembly 211, so that the tapered side wall of the abutting assembly 211 can be accurately inserted into the reserved gap between the locking sleeve 210 and the second inner tube 112, forming a wedge-shaped locking effect. Not only does it achieve stable and reliable locking function, but also simplifies the operation process and improves the convenience of use.

[0075] Secondly, compared with the complex locking assembly commonly used in the traditional support foot assembly, the embodiment eliminates a large number of parts such as threaded fasteners, spring clips, eccentric wheels, etc., making the overall structure simpler and more compact. The reduction of parts not only reduces the weight of the product and improves portability, but also significantly reduces the machining precision requirements and assembly difficulty of the parts, making the product more durable and easy to maintain.

[0076] The beneficial effects of the technical scheme of the utility model are that: the axial movement of the first inner tube 111 drives the abutting assembly 211 to move, so that the side wall of the abutting assembly 211 can be naturally inserted into the reserved gap between the locking sleeve 210 and the second inner tube 112, thereby forming a stable locking effect; in this way, not only the complex parts in the traditional support foot are eliminated, making the overall structure simpler and more compact, but also the machining precision requirements of the parts are reduced; at the same time, since the abutting assembly 211 and the first inner tube 111 are linked, the assembly process of the entire support foot assembly becomes simple and intuitive, without the need for complex assembly procedures, improving production efficiency and reducing manufacturing cost.

[0077] Continuing to refer to Figure 4 In the embodiment, the inner wall of the locking sleeve 210 and the outer wall of the abutting assembly 211 both have a taper.

[0078] In this embodiment, the inner wall of the locking sleeve 210 is designed as a tapered structure that gradually decreases in diameter from the end connected to the outer tube 110 to the end away from the outer tube 110, forming a clear taper. Correspondingly, the outer wall of the abutting assembly 211 is also designed as a tapered structure that gradually increases in diameter from the end connected to the first inner tube 111 to the end away from the first inner tube 111. The design of these two cooperating tapers allows the abutting assembly 211 to form a more uniform and controllable radial pressure when inserted into the gap between the locking sleeve 210 and the second inner tube 112.

[0079] The purpose of the double-taper design is to create a more ideal wedge locking effect. When the abutting assembly 211 is embedded in the gap, its tapered outer wall and the tapered inner wall of the locking sleeve 210 work together to convert axial movement into radial pressure, causing the second inner tube 112 to be subjected to more uniform hoop stress. This pressure distribution is more reasonable than a single taper design, avoiding local stress concentration, improving the reliability and stability of the locking, and reducing the risk of material fatigue.

[0080] When the user operates the first drive 301 to move the first inner tube 111 and the abutting assembly 211 axially, the tapered outer wall of the abutting assembly 211 and the tapered inner wall of the locking sleeve 210 form a gradual contact. This gradual contact makes the increase in locking force smoother, avoiding sudden changes during locking, allowing the user to feel a linear change in resistance and providing more accurate feedback.

[0081] In the unlocking process, the double-taper design also has obvious advantages. When the abutting assembly 211 begins to exit the gap, the locking force will decrease smoothly as the contact area decreases, avoiding the "sudden release" phenomenon commonly seen in traditional locking structures, making the unlocking process more stable and controllable, preventing the second inner tube 112 from accidentally falling due to sudden unlocking, and improving operational safety.

[0082] Continuing to refer to Figure 4 and Figure 5 In this embodiment, the abutting assembly 211 includes:

[0083] A first bushing 212 connected to one end of the first inner tube 111, the peripheral wall of the first bushing 212 is provided with a plurality of mounting notches 212a, and the plurality of mounting notches 212a are distributed along the circumference of the first bushing 212;

[0084] An abutting block 213, at least one abutting block 213 is installed in each mounting notch 212a;

[0085] Wherein, the abutting block 213 is configured to abut the second inner tube 112 under the abutting action of the locking sleeve 210.

[0086] In the embodiment, the abutting assembly 211 adopts a split structure design, effectively improving the performance and reliability of the locking mechanism.

[0087] Specifically, the first bushing 212 serves as the basic structural component of the abutting assembly 211 and is firmly connected to one end of the first inner tube 111, moving axially synchronously with the first inner tube 111. The peripheral wall of the first bushing 212 is carefully structured with multiple mounting notches 212a, which are uniformly distributed along the circumference of the first bushing 212, forming a regular ring layout. At least one abutting block 213 is installed in each mounting notch 212a, and these abutting blocks 213 serve as key elements that actually perform the locking function, playing a core role in the locking process.

[0088] In the embodiment, the abutting blocks 213 are independently set, unlike the traditional integral abutting ring structure. The abutting blocks 213 in the embodiment are arranged separately, each abutting block 213 can be independently installed in the corresponding mounting notch 212a and can move freely within a certain range. This allows each abutting block 213 to individually abut the second inner tube 112 under the abutting action of the locking sleeve 210, forming a multi-point balanced locking force distribution.

[0089] In this way, multiple independent abutting blocks 213 can better adapt to the slight irregularities on the surface of the second inner tube 112. Even if the second inner tube 112 has slight ovality or surface processing errors, each abutting block 213 can independently adapt and provide effective locking force, significantly improving the reliability and stability of the locking. Secondly, the design of independent abutting blocks 213 makes the locking force more evenly distributed along the circumference of the second inner tube 112, avoiding the stress concentration that may be caused by traditional integral abutting rings, reducing the risk of deformation of the second inner tube 112, and at the same time improving the locking strength.

[0090] In addition, the abutting blocks 213 can be made of a special material different from the first bushing 212, such as high-strength nylon, polyurethane, or special engineering plastics, etc. These materials have excellent friction characteristics and wear resistance, and can maintain stable locking performance for a long time. At the same time, using a soft and hard abutting block 213 material can provide enough locking force while avoiding scratching or damaging the surface of the second inner tube 112, prolonging the service life of the entire support foot assembly.

[0091] In actual work process, when the first inner tube 111 moves along the axial second direction by the first driving member 301, the first bushing 212 and each abutting block 213 are driven to move together until entering the gap between the locking sleeve 210 and the second inner tube 112. With the deepening of the abutting assembly 211, the inner wall of the locking sleeve 210 (when it has the aforementioned taper design) applies radial pressure to each abutting block 213, pushing the abutting block 213 to move inward and tightly abut against the second inner tube 112. Since each abutting block 213 can move independently, the position and pressure distribution can be automatically adjusted to ensure the optimal contact state with the second inner tube 112, thereby realizing stable and reliable locking effect.

[0092] In addition, the independent design of the abutting block 213 also facilitates maintenance and replacement. In the long-term use process, if some abutting block 213 is worn or damaged, the abutting block 213 can be replaced individually without replacing the entire abutting assembly 211, thereby reducing the maintenance cost.

[0093] In summary, in the embodiment, the abutting assembly 211 adopts the split structure design of the first bushing 212 cooperating with multiple independent abutting blocks 213, which not only provides more uniform and reliable locking performance, but also exhibits significant advantages in manufacturing and maintenance.

[0094] Continuing to refer to Figures 6 to 10 In the embodiment, a third inner tube 113 and a fourth inner tube 114 are sequentially sleeved, the third inner tube 113 is arranged in the second inner tube 112, and the fourth inner tube 114 is arranged in the third inner tube 113.

[0095] The support leg assembly further comprises a second locking assembly 202, which is arranged at one end of the second inner tube 112 and the third inner tube 113, and the structure of the second locking assembly 202 is consistent with that of the first locking assembly 201.

[0096] The embodiment further expands the telescopic ability of the support leg assembly on the basis of the foregoing technical solutions, realizes more flexible height adjustment function by adding the third inner tube 113 and the fourth inner tube 114 and combining the second locking assembly 202.

[0097] In the embodiment, the telescopic tube assembly 100 of the support leg assembly adopts a more abundant multi-stage telescopic structure, which comprises an outer tube 110, a first inner tube 111, a second inner tube 112, a third inner tube 113 and a fourth inner tube 114 which are sequentially sleeved. The third inner tube 113 is arranged in the second inner tube 112, the fourth inner tube 114 is arranged in the third inner tube 113, and each pipe is in good sliding fit relationship, thereby forming a complete four-stage telescopic system.

[0098] To ensure the stability and reliability of the multi-stage telescopic system, the second locking assembly 202 is installed at the connection between the second inner tube 112 and the third inner tube 113. It is worth noting that the structure of the second locking assembly 202 is completely consistent with that of the first locking assembly 201, and the same locking principle and mechanism design are adopted, including the core components such as the locking sleeve 210 and the abutting assembly 211, forming technical unity and consistency. The structural consistency not only simplifies the design process, but also realizes the generalization of parts, significantly reducing the manufacturing and assembly complexity.

[0099] The working principle of the second locking assembly 202 is basically the same as that of the first locking assembly 201. When it is necessary to adjust the extension length of the third inner tube 113 and the fourth inner tube 114, the user can operate the driving mechanism of the second locking assembly 202 to make the abutting assembly 211 exit from the gap between the locking sleeve 210 and the third inner tube 113, and release the locking state. At this time, the third inner tube 113 and the fourth inner tube 114 can freely slide to realize position adjustment. When adjusted to the ideal position, the user operates the driving mechanism again to make the abutting assembly 211 inserted into the gap to generate radial pressure and lock the position of the third inner tube 113.

[0100] In some embodiments, the operations of the locking assemblies in the multi-stage telescopic system can be independent of each other, and the user can choose to adjust the position of only one tube or adjust multiple tubes at the same time to achieve more accurate and diversified height control.

[0101] Further, the gap precision between the tubes is crucial to the performance of the telescopic system. Excessive gap can cause shaking and instability, while too small gap can affect the sliding smoothness. In this embodiment, the gap between the tubes can be controlled within the range of 0.1-0.3mm, which ensures the sliding performance and prevents excessive shaking.

[0102] In summary, by adding the third inner tube 113, the fourth inner tube 114 and the second locking assembly 202, this embodiment realizes more flexible and diversified height adjustment function on the basis of the previous technical solution, and improves the practicality and adaptability of the support leg assembly. The multi-stage telescopic design is suitable for professional photography, film shooting and other applications that require high equipment height and angle.

[0103] Continuing to refer to Figures 7 to 10 In this embodiment, the support leg assembly further includes a driving mechanism, and the driving mechanism includes a first driving member 301. The first driving member 301 is arranged at the other end of the outer tube 110, and the execution end of the first driving member 301 extends into the other end of the outer tube 110 and is connected with the first inner tube 111. The first driving member 301 is used to drive the first inner tube 111 to move.

[0104] In this embodiment, the support leg assembly is configured with a dedicated drive mechanism, which mainly includes a first drive member 301 arranged at the other end of the outer tube 110 (opposite to the end connected with the locking sleeve 210), the execution end of which extends into the inner tube 110 and is reliably connected with the other end of the first inner tube 111, forming a direct mechanical transmission relationship. By operating the first drive member 301, the user can control the axial movement of the first inner tube 111, thereby realizing the relative position adjustment between the abutting assembly 211 and the locking sleeve 210, and completing the locking or unlocking operation.

[0105] The first drive member 301 can be implemented in various ways according to different use requirements and cost considerations. For example, in professional support equipment, a miniature hydraulic oil cylinder can be used as the first drive member 301, and by controlling the flow direction and pressure of the hydraulic oil, the drive of the first inner tube 111 can be realized.

[0106] In medium-end products, a pneumatic element can be used as the first drive member 301, which uses compressed air to drive the piston to move and drive the first inner tube 111 to move. The pneumatic drive has the characteristics of quick response and easy operation, and the cost is relatively lower than that of the hydraulic system, which is suitable for application under medium load conditions.

[0107] In actual operation, when the user needs to adjust the height of the support leg, first operate the first drive member 301 to drive the first inner tube 111 to move in the axial first direction (usually downward). This movement is transmitted to the abutting assembly 211 connected with the first inner tube 111, so that the abutting assembly 211 exits from the gap between the locking sleeve 210 and the second inner tube 112, and the locking state is released.

[0108] At this time, the second inner tube 112 (and possibly the third inner tube 113 and the fourth inner tube 114) is in an unlocked state and can be freely adjusted in height. When adjusted to the desired position, the user operates the first drive member 301 again to drive the first inner tube 111 to move in the axial second direction (usually downward), and drives the abutting assembly 211 to reinsert into the gap, thereby restoring the locking state and fixing the position of the inner tubes.

[0109] This embodiment introduces a drive mechanism with the first drive member 301 as the core, effectively solving the control problem of locking and unlocking operation in the support leg assembly, making the entire system operation more convenient and reliable. The optional design of different types of drive members provides a rich implementation path for the product, which can select the most suitable technical solution according to different market positioning and application scenarios.

[0110] Referring to Figures 7 to 8 , further, the first drive member 301 includes:

[0111] The mounting shell 302 is provided with a first opening 302a on the top wall and a second opening 302b on the bottom wall;

[0112] The piston assembly 310 includes:

[0113] The fixed seat 311 is mounted in the first opening 302a and extends into the first cavity 321;

[0114] The piston sleeve 312 is slidably arranged in the first cavity 321 and sleeved on the portion of the fixed seat 311 extending into the first cavity 321, and the second cavity 322 for accommodating fluid is formed between the fixed seat 311 and the piston sleeve 312;

[0115] The end of the piston sleeve 312 opposite to the fixed seat 311 is connected with the end of the first inner tube 111 through the second opening 302b.

[0116] In the embodiment, the first driving member 301 adopts a hydraulic piston structure, mainly including a mounting shell 302 and a piston assembly 310. The mounting shell 302 is fixedly installed at the end of the outer tube 110 and serves as an external shell of the whole driving mechanism. The top wall of the mounting shell 302 is provided with a first opening 302a, and the bottom wall is provided with a second opening 302b, forming a closed first cavity 321 for accommodating the piston assembly 310 and working fluid.

[0117] The piston assembly 310 is a core component for realizing the hydraulic driving function and is composed of a fixed seat 311, a piston sleeve 312 and an elastic member 313. The fixed seat 311 is mounted in the first opening 302a of the mounting shell 302 and extends into the first cavity 321. The piston sleeve 312 is slidably arranged in the first cavity 321 and sleeved on the portion of the fixed seat 311 extending into the first cavity 321, and the two maintain a good sliding fit. The space between the fixed seat 311 and the piston sleeve 312 forms a second cavity 322 for accommodating hydraulic fluid.

[0118] The end of the piston sleeve 312 opposite to the fixed seat 311 passes through the second opening 302b of the bottom wall of the mounting shell 302 and is reliably connected with the end of the first inner tube 111, forming a direct mechanical transmission relationship. When the pressure of the hydraulic fluid in the second cavity 322 changes, it will directly act on the piston sleeve 312 to drive it to move axially in the first cavity 321, thereby driving the connected first inner tube 111 to move synchronously.

[0119] To ensure the reliable reset of the system, the piston assembly 310 further includes an elastic member 313. Specifically, the elastic member 313 is arranged in the first cavity and is used to elastically support the piston sleeve 312.

[0120] The elastic member 313 is arranged in the first cavity 321 to elastically support the piston sleeve 312. The elastic member 313 can adopt a compression spring structure, one end of which abuts against the inner wall of the mounting shell 302, and the other end of which abuts against the piston sleeve 312, in a pre-compressed state, to provide a continuous reset force for the piston sleeve 312.

[0121] In the locked state, the hydraulic fluid in the second cavity 322 is in a low-pressure state, and the elastic force of the elastic member 313 pushes the piston sleeve 312 to move in the direction of the first opening 302a, driving the first inner tube 111 and the abutting assembly 211 to the locked position, at which time the second inner tube 112 is firmly locked.

[0122] When the user needs to adjust the height of the support foot, high-pressure hydraulic fluid is injected into the second cavity 322 through an external control mechanism (such as a manual pump, an electric pump, or a pneumatic booster system). As the pressure in the second cavity 322 increases, the hydraulic pressure applied to the piston sleeve 312 gradually exceeds the elastic force of the elastic member 313, pushing the piston sleeve 312 to move in the direction of the second opening 302b, compressing the elastic member 313. This movement is transmitted to the first inner tube 111 through the piston sleeve 312, causing the first inner tube 111 to move downward, while driving the abutting assembly 211 to exit from the gap between the locking sleeve 210 and the second inner tube 112, releasing the locked state.

[0123] At this time, the second inner tube 112 (and possibly the third inner tube 113 and the fourth inner tube 114) is in a free state and can be adjusted in sliding. The user can adjust the support foot to the desired height as needed. After completing the height adjustment, the hydraulic pressure in the second cavity 322 is released (such as opening the pressure relief valve), causing the fluid pressure to decrease. Under the reset action of the elastic member 313, the piston sleeve 312 automatically moves upward, driving the first inner tube 111 and the abutting assembly 211 back to the locked position, relocking the second inner tube 112, and completing the entire adjustment process.

[0124] In some embodiments, the hydraulic fluid in the second cavity 322 can use special hydraulic oil or other low-pressure hydraulic medium, which has good fluidity and stability. High-quality sealing rings can be used between the fixed seat 311 and the piston sleeve 312 to ensure the sealing performance of the hydraulic system. In addition, the elastic member 313 can use a stainless steel compression spring, the elastic force of which needs to be calculated to provide sufficient reset force without increasing the working pressure of the hydraulic system.

[0125] The connection between the piston sleeve 312 and the first inner tube 111 can adopt threaded connection or buckle connection to ensure reliable transmission and facilitate disassembly and maintenance when needed. The connection between the mounting shell 302 and the outer tube 110 also needs to be firm and reliable, and usually adopts threaded connection or welding fixation.

[0126] Furthermore, the drive mechanism also includes a second drive member 320 that can be linked with the first drive member 301. The second drive member 320 is located at one end of the second inner tube 112. The actuating end of the second drive member 320 extends into the second inner tube 112 and is connected to one end of the third inner tube 113. The second drive member 320 is used to drive the third inner tube 113 to move axially relative to the second inner tube 112. The structure of the second drive member 320 is the same as that of the first drive member 301.

[0127] In this embodiment, the driving mechanism includes not only the aforementioned first driving member 301, but also a second driving member 320 that can be linked with the first driving member 301. Specifically, the second driving member 320 is disposed at one end of the second inner tube 112, and its actuating end extends into the interior of the second inner tube 112 and is directly connected to the end of the third inner tube 113. Thus, the second driving member 320 can drive the third inner tube 113 to move axially relative to the second inner tube 112, thereby achieving locking control of the third inner tube 113 and the possibly connected fourth inner tube 114.

[0128] It is worth noting that the structure of the second drive component 320 is completely identical to that of the first drive component 301, and it also adopts the core components such as the mounting shell 302 and piston assembly 310 described in the previous embodiments, forming a unified and modular structure. This design not only simplifies the design and manufacturing process, but also improves the versatility and maintainability of the components.

[0129] When the user operates the hydraulic control system, high-pressure hydraulic fluid is not only delivered to the second cavity 322 of the first drive member 301, but also transmitted through hydraulic lines to the corresponding cavity of the second drive member 320. In this way, the two drive members can receive the same hydraulic signal simultaneously and produce synchronized actions.

[0130] During the unlocking operation, as the hydraulic pressure increases, the piston sleeve 312 of the first drive component 301 pushes the first inner tube 111 downward, while the piston sleeve 312 of the second drive component 320 also pushes the third inner tube 113 downward. This synchronized movement causes the first locking assembly 201 and the second locking assembly 202 to release their locking states almost simultaneously, achieving one-button unlocking of all inner tubes. Users can smoothly adjust the extension length of each level of inner tube, completing the height adjustment of the support foot in one go.

[0131] Similarly, after the height adjustment is completed, the hydraulic system pressure is released, and the elastic elements 313 in the two drive components will simultaneously push their respective piston sleeves 312 to reset, driving the first inner tube 111 and the third inner tube 113 back to the locking position, while locking each level of the inner tube, thus achieving one-button locking.

[0132] In some embodiments, to achieve linkage between the driving members, a dedicated hydraulic linkage control system can also be equipped. For example, the system mainly consists of a hydraulic source (such as a manual pump or a miniature electric pump), a distribution valve, a pressure balance valve and a connecting pipeline. The pressure generated by the hydraulic source is evenly distributed to each driving member through the distribution valve, ensuring that they are subjected to the same driving force. The pressure balance valve ensures that even if each driving member has different loads, the action can be kept in harmony.

[0133] Further, the control system can also integrate electronic control elements such as solenoid valves and pressure sensors to achieve more precise pressure control and action synchronization. Users can easily achieve precise multi-stage telescopic control through a simple button or touch control interface.

[0134] The embodiment realizes the synchronous control of the multi-stage telescopic tube of the support leg assembly through the linkage multi-stage drive, and improves the operation convenience and practicality of the product.

[0135] Further, the fixed seat 311 is configured with a third opening 311c communicating with the second cavity 322, and a side wall of the piston sleeve 312 is configured with a fourth opening 311d communicating with the second cavity 322;

[0136] The third opening 311c is used to be connected with the operating component, and the fourth opening 311d is connected with the second driving member 320 through the fluid pipeline 400.

[0137] In the embodiment, the linkage mechanism of multi-stage drive is further provided, and the hydraulic linkage between the driving members is realized through the fluid passage design and the elastic fluid pipeline 400 connection, so that the operation of the multi-stage telescopic support leg is more convenient and reliable.

[0138] Specifically, the fixed seat 311 of the first driving member 301 is configured with a third opening 311c communicating with the second cavity 322, which can be designed in the form of a standard hydraulic interface and used to be connected with an external operating component (such as a manual pump, an electric pump or a gas pressure conversion device) as an input port of the entire hydraulic system. Through this interface, the working medium can be directly injected into the second cavity 322 to provide driving force for the piston assembly 310.

[0139] At the same time, a fourth opening 311d communicating with the second cavity 322 is configured on a side wall of the piston sleeve 312, which is used as an output port of the hydraulic system and connected with the second driving member 320 through the fluid pipeline 400. The first driving member 301 becomes the master control unit of the system, not only receiving control signals itself, but also transmitting signals to the second driving member 320 to form a linkage effect.

[0140] In addition, a special elastic fluid conduit 400 can be used to connect the two driving members. For example, this conduit can be designed as a spring structure, which looks like a spiral spring made of metal or composite material, but has a sealed hydraulic channel inside. In this way, the conduit has excellent elastic expansion performance, which can be elongated when the supporting foot is stretched, and can automatically retract when it is retracted, maintaining a neat appearance and good functionality.

[0141] The material of the elastic fluid conduit 400 can be a pressure-resistant rubber inner tube combined with a stainless steel or high-strength synthetic fiber braid layer to ensure good sealing and pressure resistance in bending and stretching states. Based on the hydraulic linkage design, when the user inputs high-pressure liquid into the third opening 311c through the operating component (such as a hand pump, an electric pump, or a button-controlled electromagnetic valve), the pressure is first transmitted to the second cavity 322 of the first driving member 301, pushing the piston sleeve 312 to move downward, driving the first inner tube 111 and the abutting assembly 211 to move, and releasing the first-stage locking.

[0142] At the same time, this pressure is transmitted to the corresponding chamber of the second driving member 320 through the fourth opening 311d and the elastic fluid conduit 400, driving the piston sleeve 312 of the second driving member 320 to move synchronously, and driving the third inner tube 113 to release the locking. This linkage based on hydraulic transmission ensures the high synchronization of the action of each driving member, and maintains consistent response characteristics even under different load conditions.

[0143] When the user adjusts the height of the supporting foot, the pressure control on the operating component is released, the hydraulic system pressure is reduced, and the elastic member 313 in each driving member simultaneously pushes the piston sleeve 312 to reset, achieving synchronous locking of all levels. The whole process is simple and intuitive, and can be completed with one operation.

[0144] In specific implementation, the third opening 311c and the fourth opening 311d can be designed with standardized hydraulic quick couplings to ensure firm connection and facilitate disassembly and maintenance when needed. The outer diameter of the elastic fluid conduit 400 can be reasonably designed according to the overall size of the supporting foot, for example, controlled within the range of 8-12 mm, which ensures sufficient flow and does not affect the overall appearance.

[0145] To prevent the elastic conduit from winding or interfering during stretching and contraction, a special guide groove or fixing buckle can be designed on the supporting foot to ensure that the conduit moves along the predetermined path. At the same time, a protective sleeve can be added to the outer layer of the conduit to prevent accidental wear or scratches.

[0146] The hydraulic fluid in the system can use special hydraulic oil with low viscosity and high stability to ensure good fluidity and transmission efficiency under different temperature conditions. For products used in low-temperature environments, special low-temperature hydraulic oil can be selected to maintain system performance.

[0147] The embodiment solves the synchronous control problem of the multi-stage telescopic supporting feet by the innovative fluid linkage control design combined with the application of the elastic fluid pipeline 400, and realizes excellent performance of simple operation, rapid response and accurate adjustment. Not only the technical content and use experience of the product are improved, but also the universality of the application scene is expanded, such as professional film shooting, stage lighting support and other fields with high requirements for equipment adjustment speed and accuracy.

[0148] The utility model further provides a kind of photographic support frame, including operating component, receiving seat and multiple aforementioned embodiment's supporting foot assembly, since the photographic support frame of the utility model uses all technical solutions of above-mentioned all embodiments, at least have all the technical effects brought by the technical solutions of above-mentioned embodiments, here will not be described one by one again. Among them, receiving seat is connected with the telescopic rod assembly of multiple supporting foot assemblies, and receiving seat is used to install photographic equipment;

[0149] Operating component is connected with the drive mechanism of each supporting foot assembly, and operating component is used to output driving force to the drive mechanism of each supporting foot assembly.

[0150] The photographic support frame is mainly composed of three core parts: operating component, receiving seat and multiple supporting foot assemblies. Among them, the supporting foot assembly adopts the technical solution in the foregoing embodiment, including multi-stage telescopic pipe assembly 100, locking assembly, drive mechanism and the like.

[0151] Receiving seat is located at the top of support frame, and is firmly connected with the telescopic pipe assembly 100 of multiple supporting foot assemblies, to form a stable support structure. Receiving seat is provided with a standardized mounting interface for mounting various photographic equipment, such as cameras, video cameras, gimbals and the like. The design of receiving seat focuses on the balance between light weight and strength, and can be made of high-strength aluminum alloy or carbon fiber composite material, to ensure that the overall weight is as light as possible while providing sufficient support strength.

[0152] Operating component is connected with the drive mechanism of each supporting foot assembly, and is used to output control signal and driving force to the drive mechanism. According to the hydraulic drive scheme adopted in the foregoing embodiment, operating component can be an integrated hydraulic control system, including manual pump or electric pump, pressure control valve and distribution pipeline, etc., which can provide hydraulic driving force to multiple supporting foot assemblies simultaneously to realize unified control.

[0153] In actual use, the user first installs the photographic equipment on the receiving seat, and then controls the extension and locking of the supporting foot assembly through the operating component. When the supporting height needs to be adjusted, the user operates the control system (such as pumping hydraulic oil or pressing the electric control button), and the driving force is transmitted to the drive mechanism of each supporting foot assembly through the connecting pipeline, to synchronously release the locking state of each supporting foot.

[0154] The user can adjust the extension length of each supporting leg according to the shooting requirement, after the adjustment is completed, the control device on the operation part is released, the driving force disappears, the supporting leg assembly automatically restores the locking state under the action of the elastic member 313, and the position and height of the entire supporting frame are fixed.

[0155] The above only describes some or preferred embodiments of the present application, neither the text nor the drawings can limit the scope of protection of the present application, any equivalent structural transformation or direct / indirect application in other related technical fields made by using the content of the present application specification and drawings under the concept of the whole present application shall be included in the scope of protection of the present application.

Claims

1. A support foot assembly for supporting an apparatus, characterized by The support leg assembly comprises: a telescopic tube assembly, which comprises an outer tube, a first inner tube arranged in the outer tube and a second inner tube arranged in the first inner tube, the first inner tube being axially slidable relative to the outer tube, and the second inner tube being axially slidable relative to the first inner tube; the support leg assembly further comprises a first locking assembly, which comprises: a locking sleeve connected to one end of the outer tube, the locking sleeve having a gap with the second inner tube; a stopper assembly connected to one end of the first inner tube, the stopper assembly being linked with the first inner tube and having an inner wall abutting the second inner tube, and a side wall of the stopper assembly being embedded in the gap between the locking sleeve and the second inner tube.

2. The support foot assembly of claim 1, wherein, The inner wall of the locking sleeve and the outer wall of the stopper assembly are both tapered.

3. The support foot assembly of claim 2, wherein, The stopper assembly comprises: a first bushing connected to one end of the first inner tube, the first bushing having a plurality of mounting notches formed on a peripheral wall thereof, the mounting notches being spaced apart along the circumference of the first bushing; at least one stopper block arranged in each mounting notch; wherein the stopper blocks are configured to abut the second inner tube under the abutting action of the locking sleeve.

4. The support foot assembly according to any one of claims 1 to 3, characterized in that The telescopic tube assembly further comprises a third inner tube and a fourth inner tube arranged in sequence, the third inner tube being arranged in the second inner tube; The support leg assembly further comprises a second locking assembly arranged at one end of the second inner tube and the third inner tube, the structure of the second locking assembly being identical to that of the first locking assembly.

5. The support foot assembly of claim 4, wherein, The drive mechanism comprises a first driving member arranged at the other end of the outer tube, an execution end of the first driving member being connected to the other end of the first inner tube, and the first driving member being configured to move the first inner tube.

6. The support foot assembly of claim 5, wherein, The first driving member comprises: a mounting shell having a first cavity inside, a first opening formed on a top wall of the mounting shell, and a second opening formed on a bottom wall of the mounting shell; a piston assembly, which comprises: a fixed seat arranged in the first opening and extending at least partially into the first cavity; a piston sleeve arranged in the first cavity and sleeved on the portion of the fixed seat extending into the first cavity, a second cavity for containing fluid being formed between the fixed seat and the piston sleeve; wherein one end of the piston sleeve opposite to the fixed seat is connected to one end of the first inner tube through the second opening.

7. The support foot assembly of claim 6, wherein, The piston assembly further comprises an elastic member arranged in the first cavity, the elastic member being configured to elastically support the piston sleeve.

8. The support foot assembly of claim 5, wherein, The drive mechanism further comprises a second driving member linkable with the first driving member, the second driving member being arranged at one end of the second inner tube, an execution end of the second driving member being connected to one end of the third inner tube, and the second driving member being configured to move the third inner tube axially relative to the second inner tube, wherein the structure of the second driving member is identical to that of the first driving member.

9. The support foot assembly of claim 7, wherein, A third opening is formed on the fixing base and communicates with the second cavity, and a fourth opening is formed on a side wall of the piston sleeve and communicates with the second cavity; The third opening is used for connecting with an operating component, and the fourth opening is connected with the second driving member through a fluid pipeline.

10. A photographic support stand, characterized by, The support foot assembly comprises an operating component, a receiving base and a plurality of support foot assemblies as claimed in any one of claims 1 to 9, the receiving base is connected with the telescopic rod assemblies of the plurality of support foot assemblies, and the receiving base is used for mounting a photographic equipment. The operating component is connected with the driving mechanism of each support foot assembly, and the operating component is used for outputting a driving force to the driving mechanism of each support foot assembly.

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