Supporting leg assembly capable of adjusting locking degree and photographing supporting frame

Abstract

The utility model discloses a supporting leg assembly with adjustable locking degree and a photography support frame, the supporting leg assembly with adjustable locking degree is used for supporting equipment, the supporting leg assembly with adjustable locking degree comprises a telescopic pipe assembly, the telescopic pipe assembly comprises an outer pipe and a first inner pipe arranged in the outer pipe in a penetrating manner, and the first inner pipe can slide relative to the outer pipe along the axial direction; the second inner pipe is arranged in the first inner pipe in a penetrating mode and can slide relative to the first inner pipe in the axial direction, the first locking assembly comprises a first lining, the first lining is connected with one end of the outer pipe, a receding space is constructed on the peripheral wall of the first lining, the second lining is connected with one end of the first inner pipe, and external threads capable of penetrating through the receding space are constructed on the second lining; the inner wall of the locking sleeve is provided with internal threads matched with the external threads, one end of the locking sleeve is provided with a first abutting part, the first abutting part is in linkage with the locking sleeve, the inner wall of the first abutting part is tightly attached to the second inner pipe, and the outer wall of the first abutting part is embedded into a gap between the first lining and the second inner pipe and has taper.

Description

TECHNICAL FIELD

[0001] The utility model relates to photography and video equipment technical field, especially in a kind of adjustable locking degree's support leg subassembly and photography support frame. BACKGROUND

[0002] With the increasing demand of photography and video creation, various kinds of photography auxiliary equipment are emerging. As one of the common photography auxiliary equipment, photography support frame can provide stable support for camera or other shooting devices to reduce picture shaking caused by handheld or unstable platform, thereby improving the shooting quality.

[0003] The common photography support frame on the market includes monopod, tripod and part of special support structure. These support leg subassemblies are generally composed of multiple sections of pipe body, and the height or angle is adjusted by the extension between them. The locking member between multiple sections of pipe body usually adopts manual screwing or clamping structure locking mode, for example, the locking sleeve with first connecting part cooperates with the abutting ring with second connecting part to realize locking, or adopts cam structure to push locking block to realize locking.

[0004] However, the locking mode in the related art has the following disadvantages: since the locking mechanism of locking member is relatively simple, it can only realize the locking between pipe bodies, and cannot adjust the locking tightness, which is prone to problems such as pipe body sliding due to locking too loose or pipe body jamming due to locking too tight. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a support leg subassembly with adjustable locking degree, which aims to solve the problem that the locking degree between pipe bodies cannot be adjusted.

[0006] To achieve the above purpose, the utility model provides a support leg subassembly with adjustable locking degree for supporting equipment, which comprises:

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

[0008] The second inner pipe is arranged in the first inner pipe and can slide relative to the first inner pipe in axial direction;

[0009] The first locking assembly comprises:

[0010] The first bushing is connected with one end of the outer pipe, and the peripheral wall of the first bushing is configured with a position avoiding space;

[0011] a second bushing connected with one end of the first inner tube, and the second bushing is configured with a first connecting part which can pass through the avoiding space;

[0012] a locking sleeve, an inner wall of the locking sleeve is configured with a second connecting part matched with the first connecting part, one end of the locking sleeve is provided with a first abutting part, the first abutting part is linked with the locking sleeve and the inner wall of the first abutting part is close to the second inner tube, the outer wall of the first abutting part is embedded in the gap between the first bushing and the second inner tube, and the first abutting part has a taper.

[0013] In some embodiments, one end of the first bushing close to the first abutting part is provided with a second abutting ring, and the inner wall of the second abutting ring is close to the outer wall of the first abutting part.

[0014] In some embodiments, the first connecting part is an external thread, the second connecting part is an internal thread, and the first bushing and the second abutting ring are connected through a threaded connection structure.

[0015] In some embodiments, the inner wall of the second abutting ring and the outer wall of the first abutting part are in contact, and both the inner wall of the second abutting ring and the outer wall of the first abutting part have a taper.

[0016] In some embodiments, one end of the second abutting ring close to the first abutting part is configured with a first protrusion.

[0017] In some embodiments, one end of the locking sleeve is configured with an annular groove arranged along the inner wall of the locking sleeve, one end of the first abutting part away from the second abutting ring is configured with a second protrusion, the second protrusion is clamped with the annular groove, and the locking sleeve can rotate relative to the second abutting ring under the action of external rotation force.

[0018] In some embodiments, the telescopic tube assembly further comprises a third inner tube and a fourth inner tube which are sequentially sleeved, the third inner tube is arranged in the second inner tube;

[0019] The supporting leg assembly further comprises a second locking assembly, the second locking assembly is arranged at one end of the second inner tube and the third inner tube, and the structure of the second locking assembly is consistent with that of the first locking assembly.

[0020] In some embodiments, a first driving member is further included, the first driving member is arranged at the other end of the outer tube, an execution end of the first driving member extends into the outer tube and is connected with the other end of the first inner tube, and the first driving member is used to drive the first inner tube to move along the axial direction relative to the outer tube.

[0021] In some embodiments, a second driving member is further included. The second driving member is disposed at the other end of the second inner tube. The actuating end of the second driving member extends into the second inner tube and is connected to 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.

[0022] The first driving component and the second driving component are connected by a fluid delivery pipe, and the first driving component and the second driving component are hydraulic cylinders.

[0023] The present invention further proposes a photography support frame, including a support base, an operating component, and a plurality of adjustable locking support leg assemblies as described in the foregoing embodiments. The plurality of adjustable locking support leg assemblies are connected to the support base, and the support base is used to mount camera equipment.

[0024] The operating component is disposed on the receiving seat, and the operating component is used to connect with the first driving member and the second driving member of each of the support foot assemblies, and the operating component is used to output driving force to the first driving member and the second driving member of each of the support foot assemblies.

[0025] The beneficial effects of this utility model are as follows: by setting a first abutment with its inner wall tightly attached to the second inner tube and its outer wall tapered, and linking it with a locking sleeve having an inner first connecting part, when the locking sleeve is rotated, the axial movement can be converted into radial pressure. By embedding the first abutment into the gap between the first bushing and the second inner tube, the locking force can be adjusted and evenly distributed, thereby effectively avoiding the problem of the rod slipping due to excessively loose locking or the rod getting stuck due to excessively tight locking, ensuring the stability and reliability of the support foot assembly during use. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the support foot assembly of this utility model;

[0027] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the support foot assembly of this utility model;

[0028] Figure 3 This is a schematic diagram of the cross-sectional structure at point AA;

[0029] Figure 4 This is a structural diagram from another perspective in section 3;

[0030] Figure 5 for Figure 4 Enlarged diagram of point B in the diagram;

[0031] Figure 6 for Figure 4 Enlarged view of point C in the diagram;

[0032] Figure 7 is an enlarged view of D in Figure 4 ;

[0033] Figure 8 is an exploded view of the first locking assembly;

[0034] Figure 9 is an exploded view of the first locking assembly;

[0035] Figure 10 is an enlarged view of E in Figure 4 .

[0036] BRIEF DESCRIPTION OF DRAWINGS

[0037] 100, telescopic tube assembly;

[0038] 110, outer tube; 111, first inner tube; 112, second inner tube;

[0039] 200, first locking assembly;

[0040] 210, first bushing; 210a, clearance space; 212, second abutting ring; 212a, first protrusion;

[0041] 220, second bushing; 220a, first connecting portion;

[0042] 230, locking sleeve; 230a, second connecting portion; 232, first abutting portion; 230b, annular groove; 232a, second protrusion;

[0043] 300, second locking assembly;

[0044] 113, third inner tube;

[0045] 114, fourth inner tube;

[0046] 400, first driving member;

[0047] 500, second driving member;

[0048] 600, fluid delivery tube;

[0049] 700, photographic support frame; 710, receiving seat; 712, operating member.

[0050] 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

[0051] The scheme in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than 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.

[0052] 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.

[0053] It should also be noted that when an element is referred to as being "external" or "disposed on" another element, it can be directly on the other element or can have a centering element present at the same time. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or can have a centering element present at the same time.

[0054] 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 fact that a person skilled in the art can realize it, and 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.

[0055] The existing common photography support frame on the market includes single leg, tripod and part of special support structure. These support leg assemblies are generally composed of multiple sections of pipe bodies, and the height or angle is adjusted by the extension between each other. However, in the conventional design, the multiple sections of pipe bodies are generally locked in a fixed way, and the tightness of the locking cannot be accurately adjusted, which leads to two problems in actual use: one is that the pipe body accidentally slips under the weight of the state, causing the risk of equipment damage; the other is that the pipe body is stuck due to too tight locking, which not only affects the operation experience, but also may cause the assembly to wear out. In view of this technical defect, the present application provides a support leg assembly with adjustable locking degree, which aims to solve the problem of insufficient adjustment accuracy of the conventional locking mechanism, and improve the support stability and service life.

[0056] The adjustable locking degree supporting foot assembly of the utility model is not only suitable for the field of photographic equipment, such as the tripod, monopod of single-lens reflex camera, mirrorless camera and video camera, but also can be widely applied to the easel support in the field of fine arts drawing, the level support of measuring instrument, the observation support of outdoor telescope, the infusion support of medical equipment, the adjusting support of stage lighting, the equipment support of outdoor live broadcast and other fields, and has the advantages of high adjusting precision, reliable locking and convenient operation. Figures 1 to 9 The utility model discloses an adjustable locking degree supporting foot assembly for supporting equipment, which comprises:

[0057] A telescopic pipe assembly 100 comprises an outer pipe 110 and a first inner pipe 111 arranged in the outer pipe 110, and the first inner pipe 111 can slide axially relative to the outer pipe 110.

[0058] A second inner pipe 112 is arranged in the first inner pipe 111 and can slide axially relative to the first inner pipe 111.

[0059] A first locking assembly 200 comprises:

[0060] A first bushing 210 is connected to one end of the outer pipe 110, and the peripheral wall of the first bushing 210 is configured with a clearance space 210a gap.

[0061] A second bushing 220 is connected to one end of the first inner pipe 111, and the second bushing 220 is configured with a first connecting part 220a that can pass through the clearance space 210a.

[0062] A locking sleeve 230 is configured with a second connecting part 230a matched with the first connecting part 220a, one end of the locking sleeve 230 is provided with a first abutting ring part, the first abutting part 232 is linked with the locking sleeve 230 and the inner wall is tightly attached to the second inner pipe 112, the outer wall is embedded in the gap between the first bushing 210 and the second inner pipe 112, and has a taper.

[0063] In the embodiment, the telescopic tube assembly 100 serves as the core structure of the support leg assembly and is mainly used to provide height adjustment function and load bearing capacity. The telescopic tube assembly 100 comprises an outer tube 110 and a first inner tube 111 arranged in the outer tube 110, the first inner tube 111 being axially slidable relative to the outer tube 110 to achieve first-stage telescopic adjustment. The outer tube 110 can be made of aluminum alloy material, which has a balance between light weight and sufficient strength, and the outer surface can be designed with anti-slip texture to enhance the gripping stability; the first inner tube 111 can also be made of aluminum alloy or carbon fiber material to reduce the weight while maintaining sufficient rigidity. An appropriate gap is designed between the outer tube 110 and the first inner tube 111 to ensure smooth sliding, and precise machining is performed to ensure that there is no significant shaking during telescoping.

[0064] The first locking assembly 200 not only plays a locking role in the embodiment, but more importantly, it realizes accurate adjustment of the locking degree. By setting the first abutting ring part with an inner wall closely attached to the second inner tube 112 and an outer wall with a taper, and making it cooperate with the locking sleeve 230 with the first connecting part 220a, a mechanical conversion system is formed. When the operator rotates the locking sleeve 230, the second connecting part 230a on the locking sleeve 230 interacts with the first connecting part 220a on the second bushing 220 to convert the rotary motion into axial motion, and then convert the axial force into radial pressure through the taper design. Due to the special tapered outer wall design of the first abutting ring part, different sizes of radial extrusion force can be generated according to different degrees of axial displacement, accurately embedding the gap between the first bushing 210 and the second inner tube 112, realizing continuous adjustable and uniform distribution of the locking force. This design ingeniously solves the technical problem of fine adjustment that traditional locking devices cannot achieve, effectively avoiding the problems of pipe body sliding caused by loose locking or pipe body jamming caused by tight locking.

[0065] In actual application scenarios, taking a photography tripod as an example, when the support height needs to be adjusted, first, the first driving part 400 is operated to make the first inner tube 111 drive the first locking assembly 200 to unlock, at this time, the radial pressure of the first abutting ring part on the second inner tube 112 is reduced, and the first locking assembly 200 is in an unlocked state. Under the action of gravity, the second inner tube 112 can freely slide out of the first inner tube 111 and be in an extended state. The user can operate the outer tube 110 and the first inner tube 111 to slide relative to the second inner tube 112 to find a suitable height position according to the shooting requirements.

[0066] When the ideal height is found, the user operates the first drive 400 to lock the first inner tube 111 with the first locking assembly 200. At this time, if the user feels that the locking degree is not enough, and is worried that it may slide down when loading a heavy camera or a long-focus lens, the first locking sleeve 230 can be rotated or axially moved for adjustment to increase the locking degree. The adjustment of the locking sleeve 230 is through the cooperation of the first connecting part 220a and the second connecting part 230a, which drives the first abutting ring part to further embed into the gap, increases the radial pressure, and thus enhances the locking strength. This continuously adjustable locking mechanism enables the user to accurately adjust the locking strength according to different loads, and ensures the safety and stability of the equipment.

[0067] When the shooting work is completed and needs to be stored, the user operates the first drive 400 again, and the first inner tube 111 drives the first locking assembly 200 to be unlocked, and the second inner tube 112 can be easily retracted into the first inner tube 111, realizing compact storage. If it is found that the locking is too tight during use, causing inconvenience to adjustment, the first locking sleeve 230 can also be adjusted to reduce the locking strength to an appropriate level, which ensures the locking effect and does not affect the operation experience. This adjustable design is particularly suitable for outdoor shooting environment, and the user can flexibly adjust the locking degree according to temperature changes (which affect the expansion and contraction of metal) or special road conditions (such as bumpy terrain requiring tighter locking), thereby improving the adaptability and safety of the equipment.

[0068] The beneficial effects of the technical scheme of the utility model lie in: the first abutting ring part with the inner wall closely attached to the second inner tube 112 and the outer wall having a taper is set, and is linked with the locking sleeve 230 having the first connecting part 220a, when the locking sleeve 230 is rotated, the axial movement can be converted into radial pressure, and the first abutting ring part is embedded into the gap between the first bushing 210 and the second inner tube 112, realizing the adjustment and uniform distribution of the locking force, thereby effectively avoiding the problems of pipe body sliding or pipe body jamming caused by locking that is too loose or too tight, and ensuring the stability and reliability of the supporting foot assembly during use.

[0069] Referring to Figure 7 and Figure 8 In the embodiment, the first bushing 210 is provided with a second abutting ring 212 at one end close to the first abutting part 232, and the inner wall of the second abutting ring 212 closely abuts the outer wall of the first abutting part 232. An accurate matching contact surface is formed, which can provide more uniform force transmission during locking operation.

[0070] In a further improved embodiment of the present application, the connection between the second abutting ring 212 and the first bushing 210 is designed as an adjustable structure. Specifically, the second abutting ring 212 and the first bushing 210 can be connected through a threaded connection to fine-tune the relative position, and the user can change the relative position between the second abutting ring 212 and the first bushing 210 by rotating the second abutting ring 212. This design ingeniously provides a second-stage adjustment mechanism for the locking system, making the control of the locking degree more accurate.

[0071] When the user needs to adjust the locking force more finely, the position of the second abutting ring 212 can be fine-tuned while keeping the first locking assembly 200 in a substantially locked state. By rotating the second abutting ring 212 clockwise, it can be moved towards the first abutting portion 232, increasing the extrusion force on the outer wall of the first abutting portion 232, thereby indirectly increasing the locking force of the first abutting portion 232 on the second inner tube 112. Conversely, counterclockwise rotation will reduce the pressure, achieving a softer locking effect.

[0072] It provides a wider range of locking force adjustment to adapt to various load requirements from light equipment to heavy professional equipment; secondly, it allows the user to fine-tune the locking force without completely unlocking, improving the safety of operation; thirdly, this design enhances the reliability of the locking system, even if one of the adjustment mechanisms is slightly worn after long-term use, the other mechanism can still ensure sufficient locking effect, prolonging the service life of the product.

[0073] Continuing to refer to Figure 8 and Figure 9 , further, the first connecting portion 220a is externally threaded, the second connecting portion 230a is internally threaded, and the first bushing 210 and the second abutting ring 212 are connected through a threaded connection structure, thus ensuring reliable connection and accurate adjustment capability between the components of the locking assembly.

[0074] In the present embodiment, the threaded connection structure can adopt a precision trapezoidal thread. Compared with ordinary triangular threads, trapezoidal threads have a larger contact area and better force characteristics, which can provide more stable force transmission during locking, reduce wear, and prolong service life. The pitch of the thread is designed as a fine pitch, so that the axial displacement generated by one rotation is small, which is beneficial for the user to finely adjust the locking degree.

[0075] In addition to the threaded connection, the present application can also achieve an adjustable connection between the first bushing 210 and the second abutting ring 212 through other technical solutions;

[0076] For example, a clamping groove type adjustment structure, the outer wall of the first bushing 210 is provided with multiple annular clamping grooves, and the inner wall of the second abutting ring 212 is provided with corresponding clamping claws. The user can press the release mechanism to make the clamping claws jump from one clamping groove to another, achieving stepwise adjustment.

[0077] For example, a special elastic material layer is arranged between the first bushing 210 and the second abutting ring 212, and the elastic modulus of the material layer can change with temperature or an applied electric field. By controlling the state of the elastic material through a heating element or a micro-current, stepless adjustment of the contact pressure is achieved, with the advantages of no noise and no mechanical wear.

[0078] Continuing to refer to Figure 7 In this embodiment, the inner wall of the second abutting ring 212 is in contact with the outer wall of the first abutting portion 232, and both the inner wall of the second abutting ring 212 and the outer wall of the first abutting portion 232 have a taper. Specifically, the taper of the inner wall of the second abutting ring 212 matches the taper of the outer wall of the first abutting portion 232, forming a large-area conformal contact and ensuring that the force transmission is more uniform and effective. When the two tapered surfaces are in contact, even with a slight axial movement, a significant change in radial pressure can be generated, achieving control of the locking force.

[0079] Firstly, the tapered surface contact provides self-centering function, ensuring that the two components remain coaxial in any adjustment state, avoiding uneven locking or local wear caused by eccentricity; secondly, the double-taper design allows smaller operating force to be converted into larger locking pressure; thirdly, the friction distribution of the tapered surface contact is more uniform, avoiding the stress concentration problem that may be caused by point or line contact. When the support foot assembly is subjected to torsional or lateral forces, this uniform contact can provide better resistance and enhance the overall structural stability.

[0080] In addition, the double-taper structure can also maintain good functionality under different environmental temperatures. For example, when the metal material expands or shrinks due to temperature changes, the tapered surface contact can still adaptively adjust and maintain effective locking effect, which is particularly important for professional photography equipment used outdoors.

[0081] In summary, the double-taper design of the inner wall of the second abutting ring 212 and the outer wall of the first abutting portion 232 not only improves the adjustment accuracy and operation convenience of the locking mechanism, but also enhances the reliability and durability of the product under various use conditions.

[0082] Continuing to refer to Figure 7 In this embodiment, the first protrusion 212a is arranged at one end of the second abutting ring 212 close to the first abutting portion 232.

[0083] In the present embodiment, the first protrusion 212a extends around the periphery of the second abutting ring 212 near one end of the first abutting portion 232, forming an outward limiting structure. When the support leg assembly is in the locked state or is being adjusted, the first protrusion 212a can effectively mechanically limit the edge or internal step surface of the first bushing 210, so that the second abutting ring 212 can be effectively prevented from being accidentally pushed into the first bushing 210 under the working pressure of the first abutting ring. Without this protrusion limiting, under extreme use conditions (such as heavy equipment load or external force impact), the second abutting ring 212 may slip into the first bushing 210, causing the locking function to fail, and even causing structural damage to the entire support leg assembly.

[0084] Secondly, during user adjustment of the locking degree, the first protrusion 212a can limit the movement range of the second abutting ring 212, preventing excessive adjustment of the second abutting ring 212 into the first bushing 210. This limiting function not only protects the normal operation of the locking mechanism, but also avoids the situation that the user cannot return to the original position due to excessive structural displacement during adjustment, ensuring the controllability and reversibility of the adjustment process.

[0085] Continuing to refer to Figure 7 In the present embodiment, one end of the locking sleeve 230 is configured with an annular groove 230b along the inner wall of the locking sleeve 230, and the end of the first abutting portion 232 facing away from the second abutting ring 212 is configured with a second protrusion 232a, which is engaged with the annular groove 230b. The locking sleeve 230 can rotate relative to the second abutting ring 212 under the action of external rotational force.

[0086] In the present embodiment, when the user applies a rotational force to the locking sleeve 230 to adjust the locking degree, the locking sleeve 230 can freely rotate about its axis relative to the second abutting ring 212, but the first abutting portion 232, due to the engagement of the second protrusion 232a with the annular groove 230b on the inner wall of the locking sleeve 230, can only move axially with the locking sleeve 230 without relative rotation.

[0087] In this way, it is ensured that the first abutting portion 232 will not rotate relative to the second inner tube 112 during adjustment, thereby avoiding unnecessary friction loss. Without this engagement limiting, when the locking sleeve 230 rotates, the first abutting portion 232 may follow the rotation and produce rotational friction with the surface of the second inner tube 112, not only increasing the operation resistance, but also accelerating the wear of the two contact surfaces, shortening the service life of the components.

[0088] Secondly, since the first abutting portion 232 does not rotate relative to the second abutting ring 212 but only moves in a pure axial direction, this movement mode keeps the relative position between the two tapered contact surfaces stable, ensuring that the force transmission is more uniform and controllable, and avoiding the problem of unstable locking caused by poor local contact.

[0089] Referring to Figure 5 , Figure 6 , Figure 7 and Figure 10 In this embodiment, the telescopic tube assembly 100 further includes a third inner tube 113 and a fourth inner tube 114 which are sequentially sleeved, and the third inner tube 113 is arranged in the second inner tube 112;

[0090] The support leg assembly further includes a second locking assembly 300 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 300 is consistent with that of the first locking assembly 200.

[0091] In this embodiment, by adding the third inner tube 113 and the fourth inner tube 114, the support leg assembly with adjustable locking degree of the present embodiment realizes a greater range of height adjustment capability, and expands the use scenarios and applications.

[0092] Specifically, the multi-section telescopic design makes the support leg assembly maintain a compact volume in a fully retracted state, facilitating carrying and storage, and provides sufficient working height in a fully extended state, meeting the needs of various professional photography or other application scenarios.

[0093] The second locking assembly 300 adopts the same structural design as the first locking assembly 200, including corresponding bushings, abutting ring portions, and locking sleeves 230 and other core components, ensuring the consistency of the product structure and the universality of the parts. In this way, not only is the production process simplified and the manufacturing cost reduced, but also a consistent operation experience is provided for users, reducing the learning cost of use. Specifically, the second locking assembly 300 also has the function of adjustable locking degree, and the user can accurately adjust the locking force according to the load between the third inner tube 113 and the fourth inner tube 114.

[0094] It is worth noting that in the multi-section tube design, the diameters and wall thicknesses of the section tubes are designed according to a reasonable decreasing ratio, which not only ensures sufficient strength but also optimizes the weight and space utilization. The third inner tube 113 and the fourth inner tube 114 can be made of high-strength lightweight materials such as aviation-grade aluminum alloy or carbon fiber composite materials, which can reduce the overall weight as much as possible while ensuring strength. In addition, the multi-section telescopic design can reserve appropriate internal space for cable or hydraulic pipe laying in special application scenarios, such as the integration of electric control systems or hydraulic auxiliary locking systems.

[0095] Continuing to refer toFigure 5 In the embodiment, the support foot assembly with adjustable locking degree further comprises a first driving member 400 arranged at the other end of the outer tube 110, and an execution end of the first driving member 400 extends into the outer tube 110 and is connected with the other end of the first inner tube 111, and the first driving member 400 is used to drive the first inner tube 111 to move along the axial direction relative to the outer tube 110.

[0096] The embodiment realizes the automatic control of the first locking assembly 200 by introducing the first driving member 400, and improves the operation convenience and accuracy of the support foot assembly. Specifically, the first driving member 400 is installed at the end of the outer tube 110, and an execution part of the first driving member 400 extends into the outer tube 110 and forms a reliable connection with the distal end of the first inner tube 111, thereby constituting a complete power transmission system.

[0097] When it is necessary to adjust the support height or the locking state, the user only needs to control the first driving member 400, so as to drive the first inner tube 111 to move along the axial direction relative to the outer tube 110. The movement is directly transmitted to the first locking assembly 200, so as to realize the locking or unlocking operation, without the need for the user to directly operate the locking sleeve 230 or other mechanical parts, thereby greatly reducing the complexity and physical requirements of manual operation.

[0098] The first driving member 400 can be implemented in various technical solutions, such as electric motor driving, hydraulic system, pneumatic device or mechanical lever system, etc. Taking electric driving as an example, a micro servo motor can be used in cooperation with a precision lead screw or a gear and rack mechanism, and the accurate control of the position of the first inner tube 111 can be realized through an electronic control system. Even multiple commonly used positions can be preset, so as to realize a one-key positioning function.

[0099] Such a driving design is particularly suitable for professional photography work, especially in scenes where the equipment height needs to be frequently adjusted or accurately fine-tuned, so as to significantly improve the work efficiency and reduce the operation errors. At the same time, for equipment with heavy weight, the mechanical advantage provided by the driving member can easily complete the locking and unlocking operations even in a high load state, thereby avoiding the operation difficulties that may be faced by a traditional manual system.

[0100] Continuing to refer to Figure 6 Further, the support foot assembly with adjustable locking degree further comprises a second driving member 500 arranged at the other end of the second inner tube 112, and an execution end of the second driving member 500 extends into the second inner tube 112 and is connected with the third inner tube 113, and the second driving member 500 is used to drive the third inner tube 113 to move along the axial direction relative to the second inner tube 112.

[0101] The first driving member 400 and the second driving member 500 are connected through a fluid conveying pipe 600, and the first driving member 400 and the second driving member 500 are oil cylinders.

[0102] In the embodiment, the hydraulic drive system is introduced to realize the cooperative control of the multiple telescopic pipes, which represents a major technical breakthrough in the automation degree and operation precision of the support leg assembly. The first driving member 400 and the second driving member 500 are both designed as oil cylinders, which are respectively installed at the ends of the outer pipe 110 and the second inner pipe 112 and form a closed-loop hydraulic system through the fluid conveying pipe 600.

[0103] Firstly, the hydraulic system can provide great driving force, which can easily realize the unlocking control even in the case of carrying heavy equipment. Compared with mechanical transmission or electric drive, the hydraulic system has greater output force and more stable response, which is suitable for professional photography or industrial measurement and other application scenarios with extremely high stability requirements.

[0104] Secondly, the two oil cylinders connected through the fluid conveying pipe 600 can realize synchronous or differential working modes. In the synchronous mode, the two oil cylinders can move coordinately to make the outer pipe 110, the first inner pipe 111, the second inner pipe 112 and the third inner pipe 113 simultaneously expand or contract at a preset ratio to realize the one-key unlocking or one-key locking function; in the differential mode, the position of a certain pipe body can be controlled individually to realize more flexible height and angle adjustment.

[0105] Further, the fluid conveying pipe 600 can be made of high-pressure wear-resistant material and can be provided with a precise hydraulic control valve group inside, which can accurately adjust the oil flow and pressure to realize accurate control of the telescopic speed and locking force. In some embodiments, the system can also integrate a pressure sensor and a position feedback device to provide real-time working state monitoring and provide data support for automatic control and safety protection.

[0106] The design of the double-oil-cylinder hydraulic drive is suitable for professional scenarios that require accurate positioning and frequent adjustment, such as film photography, large-scale event live broadcast, precise industrial measurement, etc. Through simple control operation, complex position adjustment can be realized, which greatly improves the work efficiency and operation convenience.

[0107] The utility model further provides a photography support frame 700, including receiving seat 710, operating part 712 and a plurality of adjustable locking degree support leg assemblies of the preceding embodiment, the specific structure of the adjustable locking degree support leg assembly is referred to the preceding embodiment, because the photography support frame 700 adopts all the technical schemes of all the preceding embodiments, therefore at least has all the technical effects brought by the technical schemes of the preceding embodiments, which will not be repeated here. Among them, a plurality of adjustable locking degree support leg assemblies are connected with the receiving seat 710, and the receiving seat 710 is used for installing a camera equipment;

[0108] The operation component 712 is arranged on the receiving seat 710, and is used for being connected with the first driving member 400 and the second driving member 500 of each support leg assembly and outputting driving force to the first driving member 400 and the second driving member 500 of each support leg assembly.

[0109] In the embodiment, the receiving seat 710 is located at the top of the entire support frame, is made of high-strength aluminum-magnesium alloy precise casting, guarantees sufficient strength and rigidity, and realizes lightweight design. A standard quick mounting plate interface can be arranged on the receiving seat 710, is compatible with mainstream photographic equipment on the market, and is also equipped with a level and an angle scale, so that a photographer can accurately position equipment. In the embodiment, the bottom of the receiving seat 710 is connected with the plurality of support leg assemblies through a precise spherical joint, the connection mode guarantees structural stability, provides a certain range of angle adjustment freedom, and meets the needs of different shooting scenes.

[0110] The operation component 712 is arranged on the side surface of the receiving seat 710, forms a centralized control center, and enables a photographer to complete operation control of the entire support frame without bending over. The operation component 712 can be a control valve group, a hydraulic pressure gauge and a multifunctional control handle, and forms a complete hydraulic control network with the first driving member 400 and the second driving member 500 of each support leg assembly through a fluid pipeline. Specifically, the operation component 712 can be internally provided with a high-efficiency micro hydraulic pump, generates driving force in a mechanical manual or electric manner, and uniformly transmits power to each support leg assembly through a distribution system.

[0111] The design of the hydraulic control system allows a photographer to simultaneously or independently control the telescopic state of each support leg assembly, and realizes various complex support configurations. For example, when shooting on an inclined ground, the length of each support leg can be adjusted to ensure that the receiving seat 710 is kept horizontal; when shooting at a special angle, a certain support leg can be lengthened to form an inclined support configuration, which provides the possibility for creative shooting.

[0112] Meanwhile, the photographic support frame 700 can also integrate a plurality of humanized designs. For example, the operation handle is designed according to human engineering, and can be easily operated even when wearing gloves; for another example, the control valve group is designed according to color coding and tactile feedback, and can be accurately recognized in a low-light environment; for another example, the fluid pipeline is made of low-temperature resistant material and is designed to be explosion-proof, to ensure reliability in extreme environments; in addition, the system can be provided with an emergency locking function, which can quickly lock all support legs in an emergency to protect expensive photographic equipment.

[0113] Thanks to the adjustable locking degree technology described in all the foregoing embodiments, the photographic support frame 700 overcomes the shortcomings of traditional products in locking adjustment.

[0114] No matter whether tracking shooting is carried out on a slightly vibrating vehicle or long-time exposure is carried out in a strong wind environment, the support frame can provide stable and reliable support effect. The innovative hydraulic drive and centralized control design greatly improve the efficiency and convenience of professional photography work, and represent the technical development direction of photography auxiliary equipment.

[0115] In summary, the photography support frame 700 integrates all the technical advantages of the adjustable locking degree support foot assembly and adds a centralized control function.

[0116] The above is only part or preferred embodiment of the utility model, neither the text nor the drawings can limit the scope of protection of the utility model, any equivalent structural transformation made by using the utility model specification and drawings contents, or direct / indirect application in other related technical fields is included in the scope of protection of the utility model.

Claims

1. A support leg assembly with adjustable locking degree for supporting equipment, characterized in that, The adjustable locking degree support foot assembly comprises: a telescopic pipe assembly comprising an outer pipe and a first inner pipe arranged in the outer pipe and capable of sliding axially relative to the outer pipe; a second inner pipe arranged in the first inner pipe and capable of sliding axially relative to the first inner pipe; a first locking assembly comprising: a first bushing connected to one end of the outer pipe, the peripheral wall of the first bushing being configured with a relief space; a second bushing connected to one end of the first inner pipe, the second bushing being configured with a first connecting part capable of passing through the relief space; a locking sleeve, the inner wall of the locking sleeve being configured with a second connecting part matched with the first connecting part, one end of the locking sleeve being provided with a first abutting part, the first abutting part being linked with the locking sleeve and having its inner wall closely attached to the second inner pipe and its outer wall embedded in the gap between the first bushing and the second inner pipe, and the first abutting part and the second abutting part both having a taper.

2. The adjustable lock-down support foot assembly of claim 1, wherein, The first bushing is provided with a second abutting ring at one end close to the first abutting part, the inner wall of the second abutting ring being closely attached to the outer wall of the first abutting part.

3. The adjustable lock-down support foot assembly of claim 2, wherein, The first connecting part is an external thread, the second connecting part is an internal thread, and the first bushing and the second abutting ring are connected through a threaded connection structure.

4. The adjustable lockdown support foot assembly of claim 2, wherein, The inner wall of the second abutting ring and the outer wall of the first abutting part are in contact, and both the inner wall of the second abutting ring and the outer wall of the first abutting part have a taper.

5. The adjustable lock-down support foot assembly of claim 3, wherein, One end of the second abutting ring close to the first abutting part is configured with a first protrusion.

6. The adjustable lockdown support foot assembly of claim 2, wherein, One end of the locking sleeve is configured with an annular groove arranged along the inner wall of the locking sleeve, one end of the first abutting part away from the second abutting ring is configured with a second protrusion, the second protrusion is engaged with the annular groove, and the locking sleeve can rotate relative to the second abutting ring under the action of external rotation force.

7. The adjustable lockdown support foot assembly of claim 1, wherein, The telescopic pipe assembly further comprises a third inner pipe and a fourth inner pipe arranged in sequence, the third inner pipe being arranged in the second inner pipe; The support foot assembly further comprises a second locking assembly arranged at one end of the second inner pipe and the third inner pipe, the structure of the second locking assembly being consistent with that of the first locking assembly.

8. The adjustable lockdown support foot assembly of claim 7, wherein, Further comprising a first driving member arranged at the other end of the outer pipe, the execution end of the first driving member extending into the outer pipe and being connected to the other end of the first inner pipe, the first driving member being used to drive the first inner pipe to move axially relative to the outer pipe.

9. The adjustable lock-down support foot assembly of claim 8, wherein, Further comprising a second driving member arranged at the other end of the second inner pipe, the execution end of the second driving member extending into the second inner pipe and being connected to the third inner pipe, the second driving member being used to drive the third inner pipe to move axially relative to the second inner pipe; The first driving member and the second driving member are connected through a fluid conveying pipe, and the first driving member and the second driving member are oil cylinders.

10. A photographic support stand, characterized by, The adjustable locking degree support foot assembly comprises a first driving member and a second driving member, the first driving member is arranged at the other end of the outer tube, and the second driving member is arranged at the other end of the second inner tube. The operation member is arranged on the receiving seat and is used for being connected with the first driving member and the second driving member of each support foot assembly and outputting driving force to the first driving member and the second driving member of each support foot assembly.

Images