Supporting leg assembly and photographing supporting frame

Abstract

The utility model discloses a supporting leg assembly, which is applied to a photography supporting frame and comprises a first supporting leg component, a second supporting leg component, a third supporting leg component, a first locking and releasing component, a second locking and releasing component, a driving component and a linkage component. The first locking and releasing assembly and the second locking and releasing assembly are connected with the driving mechanism through the linkage component, so that the driving mechanism can drive the first locking and releasing assembly to achieve position locking on the first supporting leg component and the second supporting leg component; and the second locking and releasing assembly is driven to lock the positions of the second supporting leg component and the third supporting leg component, so that a user can fix the supporting leg component more conveniently and quickly, and the mounting efficiency is improved. In addition, the utility model also discloses a photographing support frame.

Description

Technical Field

[0001] The utility model relates to the field of photographic equipment, in particular to a supporting foot assembly and a photographic supporting frame. Background Art

[0002] With the continuous development and popularization of photographic equipment, tripods are becoming more and more important as the main tool for stabilizing cameras, especially when certain photographic effects need to be achieved. For example, if users want to take night scenes or pictures with moving tracks, the exposure time needs to be increased. At this time, the digital camera cannot shake, so the help of a tripod is very much needed.

[0003] In order to adjust the length of the supporting leg assembly of a tripod in the field of photographic equipment, the supporting leg assembly is composed of multiple sets of inner tubes and outer tubes. In order to obtain a larger adjustment range, a single supporting leg assembly often includes more than three levels of inner tubes and outer tubes. If a commonly used locking structure is used, such as a spiral lock or a lever lock, the locking and unlocking operations between the inner and outer tubes will be very complicated, affecting the shooting efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide a support leg assembly, aiming to solve the problem that the locking structure of the existing multi-section support leg assembly is inconvenient to use.

[0005] To achieve the above-mentioned purpose, the utility model provides a support foot assembly, which is applied to a photographic support frame, comprising:

[0006] first leg member;

[0007] a second supporting foot member, wherein the second supporting foot member is movably connected to the first supporting foot member and can move relative to the first supporting foot member along the axial direction of the first supporting foot member;

[0008] A first locking and releasing assembly, the first locking and releasing assembly being connected between the first supporting leg member and the second supporting leg member, and being used for locking or releasing the first supporting leg member and the second supporting leg member;

[0009] a third supporting foot member, the third supporting foot member being movably connected to the second supporting foot member and being movable relative to the second supporting foot member along the axial direction of the second supporting foot member;

[0010] a second locking and releasing assembly, the second locking and releasing assembly being connected between the second supporting leg member and the third supporting leg member, and being used for locking or releasing the second supporting leg member and the third supporting leg member;

[0011] a driving assembly, the driving assembly being connected to the first locking and releasing assembly and being used for driving the first locking and releasing assembly to lock or release the first supporting leg member and the second supporting leg member;

[0012] A linkage component connects the driving component and the second locking and releasing component, so as to synchronously drive the second locking and releasing component to lock or release the second supporting leg component and the third supporting leg component when the driving component drives the first locking and releasing component.

[0013] In some embodiments, the third leg member includes at least one movable rod, the second locking assembly includes a second shell and a second connecting member, the second connecting member is configured with at least one second locking sleeve, and the at least one second locking sleeve is respectively sleeved on the at least one movable rod;

[0014] The second shell is fixedly connected to the second leg member, and the second shell is movably connected to the second connecting member, the second shell is configured with at least one second abutting groove, and the second locking sleeve is accommodated in the second abutting groove;

[0015] The linkage member comprises a third connecting member and at least one connecting rod, and the second connecting member is connected to the third connecting member through the connecting rod;

[0016] The driving assembly is connected to the third connecting member to drive the third connecting member to move axially along the movable rod, so that the second connecting member moves axially along the movable rod, thereby causing the first abutment groove to tighten or loosen the first locking sleeve to lock or release the second support leg component and the third support leg component.

[0017] In some embodiments, a clamping portion is configured at one end of the connecting rod connected to the second connecting member, and a notch is provided in the second connecting member corresponding to the position of the clamping portion. The clamping portion is clamped with the notch, so that the connecting rod can drive the second connecting member to move.

[0018] In some embodiments, the second supporting leg member includes at least one movable tube, and the at least one connecting rod is respectively disposed inside the at least one movable tube and is movably connected to the movable tube.

[0019] In some embodiments, a first stopper is provided at the end of the first support leg member, the first stopper is connected to the end of the first support leg member, the first stopper is configured with a through hole, and the movable tube is slidably connected to the through hole; and / or,

[0020] A second limiting member is disposed at the end of the third supporting leg component, the second limiting member is connected to the end of the movable rod, the second limiting member is configured with a fitting surface, and the movable tube is slidably connected to the fitting surface.

[0021] In some embodiments, the first leg member includes at least one fixing rod, the first locking assembly includes a first shell and a first connecting member, at least one first locking sleeve is configured on the first connecting member, and the at least one first locking sleeve is respectively sleeved on the at least one fixing rod;

[0022] The first shell is fixedly connected to the second leg member, and the first shell is movably connected to the first connecting member, the first shell is configured with at least one first abutting groove, and the first locking sleeve is accommodated in the first abutting groove;

[0023] The driving assembly is connected to the first connecting member, and can drive the first connecting member to move axially along the fixing rod, thereby causing the first abutting groove to press or loosen the first locking sleeve to lock or release the first supporting leg component and the second supporting leg component.

[0024] In some embodiments, the supporting leg assembly also includes a clutch, which is connected between the driving assembly and the first locking and releasing assembly and the connecting member, so as to engage the driving assembly and the first locking and releasing assembly and the connecting member, and separate the driving assembly and the first locking and releasing assembly and the connecting member.

[0025] In some embodiments, the driving assembly includes a driving member, a gear, a rack and a transmission rod, the driving member is connected to the rack, the rack is connected to the gear, the gear is connected to the transmission rod, the transmission rod is connected to the first locking and releasing assembly, and is connected to the second locking and releasing assembly through the linkage member, so as to make the first locking and releasing assembly and the second locking and releasing assembly move along the axial direction of the movable rod, thereby driving the first locking and releasing assembly to lock or release the first support leg member and the second support leg member, and driving the second locking and releasing assembly to lock or release the second support leg member and the third support leg member.

[0026] In some embodiments, the driving member is a hydraulic pump, which includes a sealing shell, a first piston, and a first piston rod, wherein the first piston rod is connected to the first piston, and the first piston is slidably disposed in the sealing shell and divides the interior of the sealing shell into a first cavity and a second cavity, wherein the first cavity and the second cavity are used to contain fluid;

[0027] The drive assembly further comprises a mounting shell, the mounting shell is configured with a sliding groove, the rack is connected to a second piston rod, the second piston rod is connected to a second piston, the second piston is slidably disposed in the sliding groove and divides the sliding groove into a third cavity and a fourth cavity;

[0028] The first cavity is connected to the third cavity so that the fluid can push the second piston to move in the direction of squeezing the fourth cavity; the second cavity is connected to the fourth cavity so that the fluid can push the second piston to move in the direction of squeezing the third cavity.

[0029] In some embodiments, the driving member is a motor, the output end of the motor is connected to a screw rod, the screw rod is threadedly connected to the rack, and the motor is used to control the rotation of the screw rod, thereby controlling the rack to slide in the horizontal direction.

[0030] The utility model further proposes a photographic support frame, comprising a support base and at least two support leg assemblies described in the accompanying embodiments, wherein the support base is connected to the at least two support leg assemblies for connecting a photographic device.

[0031] The utility model connects the first locking and releasing assembly and the second locking and releasing assembly with the driving mechanism through a linkage component, so that the driving mechanism can drive the first locking and releasing assembly to lock the first supporting leg assembly and the second supporting leg assembly in position while driving the second locking and releasing assembly to lock the second supporting leg assembly and the third supporting leg assembly in position, so that the user can complete the fixation of the supporting leg assembly more conveniently and quickly, thereby improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a structural schematic diagram of an embodiment of a support foot assembly of the utility model;

[0033] Figure 2 for Figure 1 a cross-sectional view of the middle support leg assembly;

[0034] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0035] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0036] Figure 5 This is a schematic diagram of the structure of the second shell in the support foot assembly of the utility model;

[0037] Figure 6 This is a schematic diagram of the structure of the second connecting member in the supporting foot assembly of the utility model;

[0038] Figure 7 This is a schematic diagram of the structure of the connecting member in the supporting foot assembly of the utility model;

[0039] Figure 8 This is a schematic diagram of the structure of the first position-limiting member in the support foot assembly of the utility model;

[0040] Fig. 9 This is a schematic diagram of the structure of the second position-limiting member in the support foot assembly of the utility model;

[0041] Fig.10 This is a schematic diagram of the structure of the first shell in the support foot assembly of the utility model;

[0042] Fig.11 This is a schematic diagram of the structure of the first connecting member in the supporting foot assembly of the utility model;

[0043] Fig.12 This is a schematic diagram of the connection structure of the clutch in the support foot assembly of the utility model;

[0044] Fig.13 This is an exploded view of the clutch in the support foot assembly of the utility model;

[0045] Fig.14 This is a schematic diagram of the structure of a driving assembly in an embodiment of a supporting foot assembly of the utility model;

[0046] Fig.15 for Fig.14 Schematic diagram of the structure of the hydraulic pump;

[0047] Fig.16 for Fig.14 A schematic diagram of the structure of the mounting shell;

[0048] Fig.17 This is a schematic structural diagram of a driving assembly in another embodiment of a supporting foot assembly of the utility model;

[0049] Fig.18 It is a structural schematic diagram of an embodiment of the photography support frame of the utility model.

[0050] Reference numerals:

[0051] 100, first leg member; 110, fixing rod; 120, first stopper; 121, through hole; 200, second leg member; 210, movable tube; 300, third leg member; 310, movable rod; 320, second stopper; 321, fitting surface; 400, first locking assembly; 410, first shell; 411, first abutting groove; 420, first connecting member; 421, first locking sleeve; 500, second locking assembly; 510, second shell; 511, second abutting groove; 520, second connecting member; 521, second locking sleeve; 522, notch; 600, driving assembly; 610, driving member; 620, gear; 6 30. Rack; 640. Transmission rod; 650. Hydraulic pump; 651. Sealing shell; 652. First piston; 653. First piston rod; 654. First cavity; 655. Second cavity; 660. Mounting shell; 661. Sliding groove; 662. Second piston; 663. Second piston rod; 664. Third cavity; 665. Fourth cavity; 670. Screw; 700. Linking member; 710. Third connecting member; 720. Connecting rod; 721. Clamping part; 800. Clutch; 810. Active member; 820. Driven member; 830. Clutch control member; 831. Clamping member; 832. Control component; 900. Support seat. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the scheme in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0053] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0054] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0055] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0056] The utility model provides a support foot assembly, which is applied to a photographic support frame. Figure 1-Figure 4 , the support foot assembly comprises:

[0057] A first foot member 100;

[0058] A second supporting leg member 200, the second supporting leg member 200 is movably connected to the first supporting leg member 100, and can move relative to the first supporting leg member 100 along the axial direction of the first supporting leg member 100;

[0059] A first locking and releasing assembly 400, which is connected between the first supporting leg member 100 and the second supporting leg member 200, and is used to lock or release the first supporting leg member 100 and the second supporting leg member 200;

[0060] A third supporting leg member 300, the third supporting leg member 300 is movably connected to the second supporting leg member 200, and can move relative to the second supporting leg member 200 along the axial direction of the second supporting leg member 200;

[0061] A second locking and releasing assembly 500, which is connected between the second supporting leg member 200 and the third supporting leg member 300, and is used to lock or release the second supporting leg member 200 and the third supporting leg member 300;

[0062] A driving assembly 600, the driving assembly 600 is connected to the first locking assembly 400, and is used to drive the first locking assembly 400 to lock or release the first supporting leg member 100 and the second supporting leg member 200;

[0063] The linkage component 700 is connected between the driving component 600 and the second locking component 500 to synchronously drive the second locking component 500 to lock or release the second leg component 200 and the third leg component 300 when the driving component 600 drives the first locking component 400.

[0064] The support foot assembly involved in this embodiment has a support height adjustment function. Specifically, the first support foot member 100 and the second support foot member 200 are locked or unlocked by the first locking assembly 400, and the second support foot member 200 and the third support foot member 300 are locked or unlocked by the second locking assembly 500. When unlocking, the user can operate the second locking assembly 500 to telescopically move relative to the first locking assembly 400, and operate the third locking assembly to telescopically move relative to the second locking assembly 500, and the support height of the support foot assembly can be adjusted by changing the telescopic length; when the support height adjustment is completed or no adjustment is required, the first locking assembly 400 and the second locking assembly 500 are driven to lock by the driving assembly 600 at the same time. In the locked state, the second locking assembly 500 and the third locking assembly can no longer telescopically move. The first support foot member 100, the second support foot member 200 and the third support foot member 300 can be movably connected by a sliding sleeve or a sliding bearing, so that the three can slide relative to each other within a certain range, and this embodiment does not limit this.

[0065] The utility model connects the first locking and releasing component 400 and the second locking and releasing component 500 with the driving mechanism through the linkage component 700, so that the driving mechanism can drive the first locking and releasing component 400 to lock the first supporting leg component 100 and the second supporting leg component 200, while driving the second locking and releasing component 500 to lock the second supporting leg component 200 and the third supporting leg component 300, so that the user can more conveniently and quickly complete the fixation of the supporting leg assembly, thereby improving the installation efficiency.

[0066] like Figure 1-Figure 6 As shown, in some embodiments, the third leg member 300 includes at least one movable rod 310, the second locking assembly 500 includes a second shell 510 and a second connecting member 520, the second connecting member 520 is configured with at least one second locking sleeve 521, and the at least one second locking sleeve 521 is respectively sleeved on the at least one movable rod 310;

[0067] The second housing 510 is fixedly connected to the second leg member 200, and the second housing 510 is movably connected to the second connecting member 520. The second housing 510 is configured with at least one second abutting groove 511, and the second locking sleeve 521 is accommodated in the second abutting groove 511.

[0068] The linkage member 700 includes a third connection member 710 and at least one connection rod 720, and the second connection member 520 is connected to the third connection member 710 via the connection rod 720;

[0069] The driving assembly 600 is connected to the third connecting member 710 to drive the third connecting member 710 to move axially along the movable rod 310, so that the second connecting member 520 moves axially along the movable rod 310, thereby causing the first abutment groove 411 to tighten or loosen the first locking sleeve 421 to lock or release the second support leg component 200 and the third support leg component 300.

[0070] Among them, the second locking sleeve 521 is usually a cone, a truncated cone, a prism or an irregular shape with a diameter gradually increasing or decreasing from bottom to top. By cooperating with the second abutment groove 511 of the same shape, when the second locking sleeve 521 moves, the second abutment groove 511 can squeeze or release the second locking sleeve 521, thereby realizing the locking or unlocking of the second locking and releasing assembly 500.

[0071] The driving assembly 600 can drive the third connecting member 710 to move along the axis of the movable rod 310. For example, the driving assembly 600 can be a common hydraulic, pneumatic or electric lifting device on the market, and the user can control the movement of the third connecting member 710 by operating a switch; it can also be a combination of a pulley and a chain, and one end of the chain that bypasses the fixed pulley is connected to the third connecting member 710, and then the other end of the chain is pulled to drive the third connecting member 710. The present invention is not limited to this.

[0072] The function of the driving assembly 600 is to operate the second locking assembly 500, specifically to drive the second locking sleeve 521 and the second abutting groove 511 of the second locking assembly 500 to move relative to each other, so as to lock or unlock the first leg member 100 and the second leg member 200. It can be understood that the driving assembly 600 can only drive the second locking sleeve 521 to move, and the second housing 510 is fixedly connected to the second leg member 200. Therefore, when the second locking sleeve 521 moves, the static second abutting groove 511 squeezes or releases the second locking sleeve 521, thereby achieving the effect of locking or unlocking the first leg member 100 and the second leg member 200.

[0073] When the supporting foot assembly is adjusted for supporting height, the driving assembly 600 can first be used to drive the second locking sleeve 521 of the second locking and releasing assembly 500 and the second abutting groove 511 to move relatively away from each other, so that the peripheral side portion of the second abutting groove 511 and the second locking sleeve 521 are loosened to allow the second locking sleeve 521 to release the first supporting foot component 100, that is, the unlocking between the second supporting foot component 200 and the third supporting foot component 300 is achieved, and the user can operate the third supporting foot component 300 to telescope and move for height adjustment, and the second locking assembly moves with the third supporting foot component 300 when it telescopes and moves; and after adjusting to a suitable supporting height, the driving assembly 600 is used to drive the second locking sleeve 521 and the second abutting groove 511 to move relatively close to each other, so that the peripheral side portion of the second abutting groove 511 and the second locking sleeve 521 are pressed tightly to allow the second locking sleeve 521 to lock the first supporting foot component 100, that is, the locking between the second supporting foot component 200 and the third supporting frame component is achieved, thereby completing the supporting height adjustment.

[0074] The second support leg member 200 and the third support frame member are locked by locking and unlocking the second locking sleeve 521 and the second abutment groove 511. The structural design is simple and the operation is convenient. The abutment between the second locking sleeve 521 and the second abutment groove 511 is relatively firm, which can improve the stability of the support.

[0075] like Figure 6 and Figure 7 As shown, in some embodiments, a connecting rod 720 is connected to one end of the second connecting member 520 with a clamping portion 721, and the second connecting member 520 is provided with a notch 522 at a position corresponding to the clamping portion 721. The clamping portion 721 is clamped with the notch 522, so that the connecting rod 720 can drive the second connecting member 520 to move.

[0076] Specifically, the clamping portion 721 can be an I-shaped, that is, an annular protrusion is configured at the end of the connecting rod 720, so that the main body of the connecting rod 720 is accommodated in the notch 522, and the annular protrusion is clamped on the two surfaces of the second connecting member 520. At this time, when the connecting rod 720 moves along the axial direction of the movable rod 310, it will also drive the second connecting member 520 to move synchronously, thereby realizing the locking or unlocking between the second support leg member 200 and the third support frame member. The transmission between the connecting rod 720 and the second connecting member 520 is realized by clamping the connecting portion and the notch 522. The structure is simple, and the detachable manner also makes it easy for users to clean, repair or replace it.

[0077] like Figure 2As shown, in some embodiments, the second leg member 200 includes at least one movable tube 210, and at least one connecting rod 720 is respectively disposed inside the at least one movable tube 210 and movably connected to the movable tube 210. The connecting rod 720 is disposed inside the movable tube 210 to reduce the probability of the connecting rod 720 being affected by the external environment and to increase the service life of the connecting rod 720.

[0078] like Figure 8 and Fig. 9 As shown, in some embodiments, a first stopper 120 is disposed at the end of the first leg member 100, the first stopper 120 is configured with a through hole 121, and the movable tube 210 is slidably connected to the through hole 121; and / or,

[0079] A second stopper 320 is disposed at the end of the third support leg member 300 . The second stopper 320 is configured with a fitting surface 321 . The movable tube 210 is slidably connected to the fitting surface 321 .

[0080] The first stopper 120 is used to limit the moving direction of the movable tube 210, so as to prevent the second support leg member 200 from deviating when sliding relative to the first support leg member 100, resulting in unstable support. The first stopper 120 and the first support leg member 100 can be fixed by bonding, welding or threaded connection, and then the movable tube 210 is allowed to pass through the through hole 121 on the first stopper 120, so as to limit the movable tube 210. It can be understood that the shape of the through hole 121 is usually set according to the shape of the movable tube 210, and the size is slightly larger than the movable tube 210, so that the movable tube 210 can slide in the through hole 121 while also having a good limiting effect on the movable tube 210.

[0081] The second stopper 320 is used to limit the moving direction of the movable rod 310. The second stopper 320 is provided with a fitting surface 321 at the end close to the movable tube 210. The shape of the fitting surface 321 is determined according to the surface shape of the movable rod 310. For example, when the movable rod 310 is cylindrical, the fitting surface 321 is also a curved surface, so that the movable rod 310 can slide more smoothly without displacement. It can be understood that the second stopper 320 can also be set to a shape similar to the first stopper 120, and the present invention does not limit this.

[0082] like Figure 1-Figure 4 , Fig.10 and Fig.11 As shown, in some embodiments, the first leg member 100 includes at least one fixing rod 110, the first locking assembly 400 includes a first shell 410 and a first connecting member 420, at least one first locking sleeve 421 is configured on the first connecting member 420, and at least one first locking sleeve 421 is respectively sleeved on at least one fixing rod 110;

[0083] The first housing 410 is fixedly connected to the second leg member 200, and the first housing 410 is movably connected to the first connecting member 420. The first housing 410 is configured with at least one first abutting groove 411, and the first locking sleeve 421 is accommodated in the first abutting groove 411.

[0084] The driving assembly 600 is connected to the first connecting member 420 and can drive the first connecting member 420 to move axially along the fixing rod 110 , thereby causing the first abutting groove 411 to compress or loosen the first locking sleeve 421 to lock or release the first supporting leg component 100 and the second supporting leg component 200 .

[0085] The locking and unlocking principles of the first locking and releasing assembly 400 and the second locking and releasing assembly 500 are similar and will not be described in detail here.

[0086] like Fig.12 and Fig.13 As shown, in some embodiments, the support leg assembly also includes a clutch 800, which is connected between the drive assembly 600 and the first lock and release assembly 400 and the connecting member, so as to engage the drive assembly and the first lock and release assembly 400 and the connecting member, and separate the drive assembly 600 and the first lock and release assembly 400 and the connecting member.

[0087] Exemplarily, the clutch 800 includes an active component 810, a driven component 820, and a clutch control component 830, wherein the driving component 600 is connected to the active component 810, the active component 810 is connected to the driven component 820, and the driven component 820 is connected to the first locking component 400 and the connecting component, so that under normal circumstances, the driving component 600 can drive the driven component 820 to move, and then drive the first locking component 400 and the second locking component 500 connected to the connecting component to achieve locking or unlocking. When the clutch control component 830 disconnects the connection between the active component 810 and the driven component 820, the driving component 600 can no longer affect the first locking component 400 and the second locking component 500 connected to the connecting component, and the user can manipulate the driven component 820 by himself to achieve locking or unlocking of the first locking component 400 and the second locking component 500 connected to the connecting component, thereby increasing the flexibility of manipulating the support foot assembly.

[0088] There are many ways to connect the active component 810 and the driven component 820, usually by snap-on connection, or other detachable connections, such as using magnetic materials to make the active component 810 or the driven component 820, so that the two are connected by magnetism. The way to separate the active component 810 and the driven component 820 can be set as needed, such as making the clutch control component 830 directly lift the active component 810 so that the active component 810 is suspended in the air; the clutch control component 830 applies a reverse magnetic field to temporarily eliminate the magnetism of the active component 810 and the driven component 820; or a strip groove and an annular groove are set on the driven component 820, and when the active component 810 cooperates with the strip groove, it can drive the driven component 820 to rotate, and the clutch control component adjusts the position of the active component 810 so that when it cooperates with the annular groove, the active component 810 and the driven component 820 are slidably connected, and at this time, the driven component 820 can be controlled by external force to rotate freely. Exemplarily, the clutch control member 830 includes a clamping member 831 and a control member 832, wherein the clamping member 831 is used to engage or separate the active member 810 and the driven member 820. The control member 832 may be disposed between the clamping member 831 and the active member 810, and is used to drive the clamping member 831 and the active member 810 to move relative to each other under the action of an external force, so that the clamping member 831 and the active member 810 are separated; or, the control member 832 is disposed between the clamping member 831 and the driven member 820, and is used to drive the clamping member 831 and the driven member 820 to move relative to each other under the action of an external force, so that the clamping member 831 and the driven member 820 are separated.

[0089] Furthermore, the driving assembly 600 can be configured to drive the active component 810 to rotate, and at the same time, two sections of threads with opposite rotation directions are set at the end of the driven component 820, and the first connecting member 420 and the second connecting member 520 are respectively connected to the two sections of threads, so that when the driven component 820 rotates driven by the active component 810, the first connecting member 420 and the second connecting member 520 move towards each other, thereby realizing the locking and unlocking between the first supporting leg component 100 and the second supporting leg component 200 and the second supporting leg component 200 and the third supporting leg component 300.

[0090] like Fig.14As shown, in some embodiments, the driving assembly 600 includes a driving member 610, a gear 620, a rack 630 and a transmission rod 640, the driving member 610 is connected to the rack 630, the rack 630 is connected to the gear 620, the gear 620 is connected to the transmission rod 640, the transmission rod 640 is connected to the first locking and releasing assembly 400, and is connected to the second locking and releasing assembly 500 through a linkage member 700, so as to make the first locking and releasing assembly 400 and the second locking and releasing assembly 500 move axially along the movable rod 310, thereby driving the first locking and releasing assembly 400 to lock or release the first support leg assembly 100 and the second support leg assembly 200, and driving the second locking and releasing assembly 500 to lock or release the second support leg assembly 200 and the third support leg assembly 300.

[0091] Exemplarily, the drive member 610 drives the rack 630 to move horizontally to the left, so that the gear 620 rotates counterclockwise, driving the transmission rod 640 to rotate counterclockwise, thereby causing the first locking assembly 400 to descend along the axial direction of the movable rod 310, and causing the second locking assembly 500 to rise along the axial direction of the movable rod 310, thereby achieving the locking of the support leg assembly. Among them, two sections of threads with opposite rotation directions can be set on the transmission rod 640, and the first locking assembly 400 and the second locking assembly 500 are respectively connected to the two sections of threads, thereby achieving the movement of the first locking assembly 400 and the second locking assembly 500; it is also possible to convert the rotational motion into a linear motion by setting a crank connecting rod mechanism or a chain gear 620 system, which is not limited by the present invention.

[0092] The movement of the driving member 610 can be transmitted to the first locking and releasing assembly 400 and the second locking and releasing assembly 500 through a simple gear 620, a rack 630 and a transmission rod 640. The user only needs to operate the driving member 610 to complete the locking and unlocking of the supporting leg assembly, which saves costs and improves the user experience.

[0093] like Fig.15 and Fig.16 As shown, in some embodiments, the driving member 610 is a hydraulic pump 650, which includes a sealing shell 651, a first piston 652, and a first piston rod 653. The first piston rod 653 is connected to the first piston 652. The first piston 652 is slidably disposed in the sealing shell 651 and divides the interior of the sealing shell 651 into a first cavity 654 and a second cavity 655. The first cavity 654 and the second cavity 655 are used to contain fluid;

[0094] The driving assembly 600 further includes a mounting shell 660, the mounting shell 660 is configured with a sliding groove 661, the rack 630 is connected to a second piston rod 663, the second piston rod 663 is connected to a second piston 662, the second piston 662 is slidably disposed in the sliding groove 661, and the sliding groove 661 is divided into a third cavity 664 and a fourth cavity 665;

[0095] The first cavity 654 is connected to the third cavity 664, so that the fluid pushes the second piston 662 to move in the direction of squeezing the fourth cavity 665; the second cavity 655 is connected to the fourth cavity 665, so that the fluid pushes the second piston 662 to move in the direction of squeezing the third cavity 664. It can be understood that at this time, the first cavity 654 and the third cavity 664 are combined into a closed space, and the second cavity 655 and the fourth cavity 665 are combined into another closed space, which is convenient for fluid to conduct pressure.

[0096] The principle is the same as that of a hydraulic press. In a closed fluid, the pressure applied to the fluid will be evenly transmitted to every part of the fluid and will be transmitted in all directions of the fluid. Therefore, when in use, the first piston 652 is pulled upward, and the fluid in the first cavity 654 flows to the third cavity 664 and exerts pressure on the second piston, so that the second piston moves along the sliding groove 661 in the direction of squeezing the fourth cavity 665, driving the second piston rod and the rack 630 connected to the second piston rod to move at the same time, thereby achieving the effect of driving the transmission rod 640 to rotate counterclockwise; if the first piston 652 is pushed downward, the fluid in the second cavity 655 flows to the fourth cavity 665 and exerts pressure on the second piston, so that the second piston moves along the sliding groove 661 in the direction of squeezing the third cavity 664, thereby achieving the effect of driving the transmission rod 640 to rotate clockwise.

[0097] like Fig.17 As shown, in some embodiments, the driving member 610 is a motor, the output end of the motor is connected to a screw rod 670, the screw rod 670 is threadedly connected to the rack 630, and the motor is used to control the rotation of the screw rod 670, thereby controlling the rack 630 to slide in the horizontal direction.

[0098] When in use, the motor drives the screw rod 670 to rotate, and then the spiral movement between the screw rod 670 and the rack 630 realizes the horizontal movement of the rack 630, thereby driving the gear 620 to rotate, and the gear 620 drives the transmission rod 640 connected thereto to rotate, finally completing the control of the first locking and releasing assembly 400 and the second locking and releasing assembly 500.

[0099] The present invention further proposes a photography support frame including a support base 900 and at least two support foot assemblies. Fig.18The specific structure of the support leg assembly refers to the above embodiment. Since the photography support frame adopts all the technical solutions of all the above embodiments, it at least has all the technical effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the support seat 900 is connected with at least two support leg assemblies for connecting the photography device.

[0100] The above description is only a partial or preferred embodiment of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A support foot assembly, applied to a photographic support frame, characterized in that: include: first leg member; a second supporting foot member, wherein the second supporting foot member is movably connected to the first supporting foot member and can move relative to the first supporting foot member along the axial direction of the first supporting foot member; A first locking and releasing assembly, the first locking and releasing assembly being connected between the first supporting leg member and the second supporting leg member, and being used for locking or releasing the first supporting leg member and the second supporting leg member; a third supporting foot member, the third supporting foot member being movably connected to the second supporting foot member and being movable relative to the second supporting foot member along the axial direction of the second supporting foot member; a second locking and releasing assembly, the second locking and releasing assembly being connected between the second supporting leg member and the third supporting leg member, and being used for locking or releasing the second supporting leg member and the third supporting leg member; a driving assembly, the driving assembly being connected to the first locking and releasing assembly and being used for driving the first locking and releasing assembly to lock or release the first supporting leg member and the second supporting leg member; A linkage component connects the driving component and the second locking and releasing component, so as to synchronously drive the second locking and releasing component to lock or release the second supporting leg component and the third supporting leg component when the driving component drives the first locking and releasing component.

2. The support leg assembly according to claim 1, characterized in that: The third support leg member includes at least one movable rod, the second locking and releasing assembly includes a second shell and a second connecting member, the second connecting member is configured with at least one second locking sleeve, and the at least one second locking sleeve is respectively sleeved on the at least one movable rod; The second shell is fixedly connected to the second leg member, and the second shell is movably connected to the second connecting member, the second shell is configured with at least one second abutting groove, and the second locking sleeve is accommodated in the second abutting groove; The linkage member comprises a third connecting member and at least one connecting rod, and the second connecting member is connected to the third connecting member through the connecting rod; The driving assembly is connected to the third connecting member to drive the third connecting member to move axially along the movable rod, so that the second connecting member moves axially along the movable rod, thereby causing the second abutment groove to tighten or loosen the second locking sleeve to lock or release the second support leg component and the third support leg component.

3. The support leg assembly according to claim 2, characterized in that: One end of the connecting rod connected to the second connecting member is configured with a clamping portion, and the second connecting member is provided with a notch at a position corresponding to the clamping portion, and the clamping portion is clamped with the notch, so that the connecting rod can drive the second connecting member to move.

4. The support leg assembly according to claim 3, characterized in that: The second supporting leg component includes at least one movable tube, and the at least one connecting rod is respectively arranged inside the at least one movable tube and is movably connected to the movable tube.

5. The support leg assembly according to claim 4, characterized in that: A first stopper is disposed at the end of the first support leg member, the first stopper is configured with a through hole, and the movable tube is slidably connected to the through hole; and / or, A second limiting member is disposed at the end of the third supporting leg component. The second limiting member is configured with a fitting surface, and the movable tube is slidably connected to the fitting surface.

6. The support leg assembly according to claim 5, characterized in that: The first support leg member includes at least one fixing rod, the first locking assembly includes a first shell and a first connecting member, at least one first locking sleeve is constructed on the first connecting member, and the at least one first locking sleeve is respectively sleeved on the at least one fixing rod; The first shell is fixedly connected to the second leg member, and the first shell is movably connected to the first connecting member, the first shell is configured with at least one first abutting groove, and the first locking sleeve is accommodated in the first abutting groove; The driving assembly is connected to the first connecting member, and can drive the first connecting member to move axially along the fixing rod, thereby causing the first abutting groove to press or loosen the first locking sleeve to lock or release the first supporting leg component and the second supporting leg component.

7. The support leg assembly according to claim 1, characterized in that: The supporting foot assembly also includes a clutch, which is connected between the driving assembly and the first locking and releasing assembly and the linkage member, so as to engage the driving assembly and the first locking and releasing assembly and the linkage member, and separate the driving assembly and the first locking and releasing assembly and the linkage member.

8. The support leg assembly according to claim 1, characterized in that: The driving assembly includes a driving member, a gear, a rack and a transmission rod, the driving member is connected to the rack, the rack is connected to the gear, the gear is connected to the transmission rod, the transmission rod is connected to the first locking and releasing assembly, and is connected to the second locking and releasing assembly through the linkage member, so as to make the first locking and releasing assembly and the second locking and releasing assembly move along the axial direction of the movable rod, thereby driving the first locking and releasing assembly to lock or release the first supporting leg member and the second supporting leg member, and driving the second locking and releasing assembly to lock or release the second supporting leg member and the third supporting leg member.

9. The support leg assembly according to claim 8, characterized in that: The driving member is a hydraulic pump, which includes a sealing shell, a first piston, and a first piston rod. The first piston rod is connected to the first piston. The first piston is slidably disposed in the sealing shell and divides the interior of the sealing shell into a first cavity and a second cavity. The first cavity and the second cavity are used to contain fluid. The drive assembly further comprises a mounting shell, the mounting shell is configured with a sliding groove, the rack is connected to a second piston rod, the second piston rod is connected to a second piston, the second piston is slidably disposed in the sliding groove and divides the sliding groove into a third cavity and a fourth cavity; The first cavity is connected to the third cavity so that the fluid can push the second piston to move in the direction of squeezing the fourth cavity; the second cavity is connected to the fourth cavity so that the fluid can push the second piston to move in the direction of squeezing the third cavity.

10. The support leg assembly according to claim 8, characterized in that: The driving member is a motor, the output end of the motor is connected to a screw rod, the screw rod is threadedly connected to the rack, and the motor is used to control the rotation of the screw rod, thereby controlling the rack to slide in the horizontal direction.

11. A photography support frame, characterized in that: It comprises a support base and at least two support leg assemblies according to any one of claims 1 to 10, wherein the support base is rotatably connected to the at least two support leg assemblies for connecting a photographic device.

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