Control device of photographic support device and photographic support device

Abstract

The invention discloses a control device of a photography supporting device and the photography supporting device applying the control device, the photography supporting device comprises supporting legs provided with hydraulic opening and closing mechanisms, the hydraulic opening and closing mechanisms control the supporting legs to move, and the control device is used for controlling the hydraulic opening and closing mechanisms. The control device comprises a driving cylinder body, a piston rod, an operating handle and a locking mechanism; the driving cylinder body is connected with the hydraulic opening and closing mechanism; the piston rod is movably arranged in the driving cylinder body, and one end of the piston rod is exposed out of the driving cylinder body; the operating handle is movably connected with the end, exposed out of the driving cylinder body, of the piston rod and used for driving the piston rod to move. The locking mechanism comprises a first locking part arranged on one of the driving cylinder body and the operating handle and a second locking part arranged on the other of the driving cylinder body and the operating handle, and when the first locking part is matched with the second locking part, the operating handle and the driving cylinder body are relatively fixed; and when the first locking part and the second locking part are unmatched, the operating handle can move relative to the driving cylinder body.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of general equipment for photographic equipment, in particular to a control device of a photographic support device and a photographic support device applying the control device. BACKGROUND

[0002] The photographic support device is an auxiliary equipment for stabilizing photographic equipment, which can be a tripod or a stabilizing gimbal. Its main function is to support cameras, video cameras or other photographic equipment through adjustable support legs to ensure the stability and anti-shake effect of the equipment during shooting. The photographic support device usually includes a main frame, support legs and a locking mechanism. Users can drive the hydraulic system to adjust the extension and locking state of the support legs by operating the control handle.

[0003] In the existing photographic support device, the support leg locking assembly is usually locked or unlocked by a hydraulic cylinder and a handle. The piston rod of the hydraulic cylinder is movably connected with the handle. The rotation or pulling of the handle drives the movement of the piston rod, thereby changing the oil path state of the hydraulic chamber to control the locking of the support leg. However, in the stable locking state of the oil path, the handle is easily affected by external collision or unintentional touch of the user, which causes the handle to move accidentally, thereby causing the oil path to change, resulting in the locking failure of the support leg, which causes the equipment to fall or the shooting to be interrupted.

[0004] Therefore, there is an urgent need for a control device of a photographic support device that can prevent the problem of locking failure of the support leg caused by accidental touch of the handle. SUMMARY

[0005] The main purpose of the present application is to provide a control device of a photographic support device, which can prevent the problem of locking failure of the support leg caused by accidental touch of the handle.

[0006] To achieve the above purpose, the present application provides a control device of a photographic support device, which includes support legs, the support legs are provided with a hydraulic opening and closing mechanism for controlling the movement of the support legs, and the control device is used to control the hydraulic opening and closing mechanism. The control device includes: a drive cylinder body connected with the hydraulic opening and closing mechanism; a piston rod movably arranged in the drive cylinder body, and one end of the piston rod is exposed outside the drive cylinder body; a handle movably connected with the exposed end of the piston rod outside the drive cylinder body, the handle is used to drive the movement of the piston rod; The handle locking mechanism includes a first locking part disposed on one of the drive cylinder and the handle, and a second locking part disposed on the other. When the first locking part and the second locking part are engaged, the handle is fixed relative to the drive cylinder; when the first locking part and the second locking part are disengaged, the handle can move relative to the drive cylinder.

[0007] In some embodiments, one of the first locking part and the second locking part is a plug-in, and the other is a socket into which the plug-in can extend; The connector is inserted into the socket to fix the handle relative to the drive cylinder, or the connector is disengaged from the socket to make the handle movable relative to the drive cylinder.

[0008] In some embodiments, the outer side of the drive cylinder is provided with a rotating connection portion spaced apart from the exposed end of the piston rod, one end of the handle is rotatably connected to the rotating connection portion, the middle part of the handle is movably connected to the exposed end of the piston rod, the other end of the handle is provided with one of the plug and the socket, and the other of the plug and the socket is provided on the side of the drive cylinder facing away from the rotating connection portion.

[0009] In some embodiments, the handle locking mechanism includes a first rotating block disposed on the side of the drive cylinder opposite to the rotating connection portion, the first rotating block being rotatably connected to the drive cylinder, and the free end of the first rotating block being recessed with the insertion port.

[0010] In some embodiments, the drive cylinder body has a first protrusion on the side opposite to the rotating connection portion. The first protrusion has an installation opening. The first rotating block can extend into the installation opening and is rotatably connected to the side wall of the installation opening via a damping shaft.

[0011] In some embodiments, the handle locking mechanism includes a second rotating block and a self-locking element, wherein: One end of the second rotating block is rotatably connected to the handle, and the free end of the second rotating block is provided with the socket; The self-weight locking member is slidably disposed on the side of the drive cylinder away from the exposed end of the piston rod. The self-weight locking member has a first receiving notch for the free end of the second rotating block to extend into. The inner wall of the first receiving notch is provided with the plug-in member. The self-weight locking member can be driven by external force to make the plug-in member extend into or away from the socket.

[0012] In some embodiments, the socket is provided on the handle, and a second protrusion is provided on the side of the drive cylinder facing away from the rotating connection portion. The second protrusion is provided with a mounting groove for installing the connector. The control device further includes a first elastic element, which is disposed between the plug and the bottom wall of the mounting groove, with one end of the plug facing away from the first elastic element exposed in the mounting groove.

[0013] In some embodiments, the exposed end of the connector is spherically shaped.

[0014] In some embodiments, the insertion port is located on the side of the drive cylinder facing away from the rotating connection portion; the handle includes a first connecting arm and a second connecting arm that are separately configured, one end of the first connecting arm is rotatably connected to the rotating connection portion, the middle part of the first connecting arm is movably connected to the exposed end of the piston rod, the second connecting arm is movably connected to the other end of the first connecting arm, and the insertion member is located on the second connecting arm.

[0015] In some embodiments, the second link arm is slidably connected and / or rotatably connected to the first link arm.

[0016] In some embodiments, the second link arm is rotatably connected to the first link arm; The first link arm has a rotation opening at one end away from the rotation connection part, and one end of the second link arm can extend into the rotation opening and be rotatably connected to the side wall of the rotation opening through a spring shaft.

[0017] In some embodiments, a third protrusion is provided on the side of the drive cylinder opposite to the rotating connection portion, and the peripheral wall of the third protrusion is provided with the insertion port; The end of the second connecting arm that extends into the rotating opening is partially thinned to form a second receiving notch, and the side wall of the second receiving notch is provided with the plug-in member.

[0018] In some embodiments, the second link arm is slidably connected to the first link arm; The drive cylinder body has a first tongue protruding on the side opposite to the rotating connection part, the insertion port is provided on the first tongue, and the first connecting rod arm has a first insertion interface for the first tongue to be inserted. The first connecting arm is hollow and has a sliding cavity, and the side wall of the first insertion interface has a first through hole for connecting the first insertion interface and the sliding cavity; The second link arm is provided with the plug-in member, which is slidably disposed in the sliding cavity, and the end of the plug-in member away from the second link arm can extend into the first plug-in interface through the first through hole.

[0019] In some embodiments, the handle locking mechanism further includes an auxiliary locking member disposed on one side of the connector. The auxiliary locking member is disposed inside the first linkage arm and connected to the first linkage arm through a second elastic member. The second elastic member is used to drive the auxiliary locking member to abut against the side of the first tongue where no insertion port is provided. A linkage structure is provided between the auxiliary locking member and the plug-in member. The linkage structure is used to ensure that when the plug-in member moves away from the socket, the auxiliary locking member moves away from the side of the first tongue where the socket is not provided.

[0020] In some embodiments, the control device further includes an unlocking mechanism, wherein the connector is disposed on the drive cylinder or the handle via a third elastic element, the unlocking mechanism is used to drive the connector to disengage from the socket, and the third elastic element is used to drive the connector to reset.

[0021] In some embodiments, the drive cylinder body has a second tongue protruding from the side opposite to the rotating connection portion, and the free end of the second tongue is provided with the insertion port; The connector is movably disposed inside the handle, and the handle has a second insertion interface for the second tongue to extend into the handle so that the connector can be inserted into the insertion interface.

[0022] In some embodiments, the connector includes a first crossbeam, second vertical arms disposed on both sides of the first crossbeam, and a pin disposed on the first crossbeam. The pin is located between the first crossbeam and the two second vertical arms, and the pin is engaged with the socket. The unlocking mechanism includes an unlocking button, one end of which extends into the handle to connect to the end of the second vertical arm away from the first crossbeam, and the other end of which protrudes from the handle. The unlocking button is used to drive the pin to disengage from the socket.

[0023] In some embodiments, one end of the unlock button that extends into the handle contacts the end of the second vertical arm away from the first crossbeam via an inclined surface.

[0024] Furthermore, this application proposes a photographic support device, comprising: The support leg is equipped with a hydraulic opening and closing mechanism, which is used to control the movement of the support leg. The control device described in the foregoing embodiments is used to control the hydraulic opening and closing mechanism.

[0025] This application provides a control device for a photographic support device. The control device includes a hydraulic cylinder, a piston rod, a handle, and a handle locking mechanism. By setting the handle locking mechanism, the handle can be locked or unlocked relative to the hydraulic cylinder. The handle locking mechanism includes a socket disposed in one of the hydraulic cylinder and the handle, and a connector disposed in the other. When the handle is in the locked position, the connector is inserted into the socket, and the handle and the hydraulic cylinder are fixed relative to each other, so that the handle cannot move to drive the piston rod to move. This prevents accidental contact of the handle from causing the piston rod to move erroneously, and avoids the hydraulic opening and closing mechanism from accidentally controlling the movement of the support foot, which would cause the support foot to fail to lock. When the connector is disengaged from the socket, the handle can move relative to the hydraulic cylinder, thereby allowing the operator to drive the handle to control the piston rod and realize the normal opening and closing drive of the support foot. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the control device of the photographic support apparatus of this application in one embodiment; Figure 2 for Figure 1 A schematic diagram of the control device for the photographic support apparatus in this application, viewed from one angle. Figure 3 for Figure 2 Cross-sectional view at point AA; Figure 4 for Figure 1 A partial structural schematic diagram of the control device for the photographic support apparatus in one embodiment of this application; Figure 5 for Figure 1 A schematic diagram of the operating handle and connector 402 of the control device for the photographic support apparatus in one embodiment of this application; Figure 6 This is a schematic diagram of the control device of the photographic support apparatus of this application in another embodiment; Figure 7 for Figure 6 A partial structural schematic diagram of the control device for the photographic support apparatus in one embodiment of this application; Figure 8 This is a schematic diagram of the control device of the photographic support apparatus of this application in yet another embodiment; Figure 9 for Figure 8 Cross-sectional view at point BB; Figure 10 for Figure 8 A partial structural schematic diagram of the control device for the photographic support apparatus in one embodiment of this application; Figure 11 for Figure 8 A schematic diagram of the operating handle and connector 402 of the control device for the photographic support apparatus in one embodiment of this application; Figure 12 This is a schematic diagram of the control device of the photographic support apparatus of this application in another embodiment; Figure 13 for Figure 12 A schematic diagram of the control device for the photographic support apparatus in this application, viewed from one angle. Figure 14 for Figure 13 Cross-sectional view at point CC; Figure 15 for Figure 14 A close-up view of a section at point D; Figure 16 for Figure 12 A schematic diagram of the operating handle and connector 402 of the control device for the photographic support apparatus in one embodiment of this application; Figure 17 This is a schematic diagram of the control device of the photographic support apparatus of this application in another embodiment; Figure 18 for Figure 17 A schematic diagram of the control device for the photographic support apparatus in this application, viewed from one angle. Figure 19 for Figure 18 Cross-sectional view at point DD; Figure 20 for Figure 17 A partial structural schematic diagram of the control device for the photographic support apparatus in one embodiment of this application; Figure 21 for Figure 17 A partial structural schematic diagram of the control device for the photographic support apparatus in one embodiment of this application; Figure 22 This is a schematic diagram of the control device of the photographic support apparatus of this application in another embodiment; Figure 23 for Figure 22 A partial structural schematic diagram of the control device for the photographic support apparatus in one embodiment of this application. Detailed Implementation

[0027] The solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0030] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on what is feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, such a combination should be considered nonexistent and not within the scope of protection claimed in this application.

[0031] This application discloses a control device for a photographic support device. The photographic support device includes a support leg, and the support leg is provided with a hydraulic opening and closing mechanism. The hydraulic opening and closing mechanism is used to control the movement of the support leg. The control device 100 is used to control the hydraulic opening and closing mechanism. In some embodiments, the control device 100 includes: Drive cylinder 1, which is connected to the hydraulic opening and closing mechanism; Piston rod 2 is movably disposed inside drive cylinder 1, and one end of piston rod 2 is exposed outside drive cylinder 1; The operating handle 3 is movably connected to one end of the piston rod 2 that is exposed outside the drive cylinder 1. The operating handle 3 is used to drive the piston rod 2 to move. The locking mechanism 4 includes a first locking part disposed on one of the drive cylinder 1 and the operating handle 3, and a second locking part disposed on the other. When the first locking part and the second locking part are engaged, the handle is fixed relative to the drive cylinder. When the first locking part and the second locking part are disengaged, the handle can move relative to the drive cylinder.

[0032] You can refer to this first Figures 1 to 5 This application proposes a control device 100 specifically for photographic support devices. The control device 100 mainly solves the safety hazard of existing hydraulic photographic support devices (such as photographic tripods, monopods or stabilizers) being easily unlocked due to accidental touch of the handle when the support legs are locked.

[0033] Photographic support devices typically include multiple extendable or retractable support legs. Each support leg has a hydraulic opening and closing mechanism inside or connected to it. This hydraulic opening and closing mechanism realizes the rapid extension, shortening, or angle opening and closing of the support leg by opening and closing the internal oil circuit or changing the pressure, thereby adjusting the height, span, or stability of the photographic support device and ensuring that photographic equipment such as cameras and camcorders remain stable and shake-free during shooting.

[0034] As the core operating component of the entire photographic support device, the control device 100 is directly connected to the aforementioned hydraulic opening and closing mechanism. Its main function is to control the switching state of the internal oil circuit of the hydraulic opening and closing mechanism through the user's operation of the control device 100, thereby realizing the locking, unlocking, and length / angle adjustment of the support feet. When the user needs to adjust the support feet, it can be done quickly through the control device 100; after the support feet are adjusted to the correct position and locked, the control device 100 ensures that the hydraulic opening and closing mechanism maintains a stable oil circuit state, making the support feet firmly locked and preventing accidental loosening due to external interference. This provides a reliable support platform for photographic equipment and avoids equipment damage or shooting failure due to support failure.

[0035] This application incorporates a locking mechanism 4, which allows the operating handle 3 to remain fixed in a fixed position relative to the drive cylinder 1 under normal locking conditions, and only allows the operating handle 3 to move relative to the drive cylinder 1 when active operation is required. The locking mechanism 4 consists of a first locking part and a second locking part. When the first locking part and the second locking part cooperate with each other, a mechanical positional constraint is formed between the operating handle 3 and the drive cylinder 1, preventing the operating handle 3 from rotating or swinging at will. When the first locking part and the second locking part are actively disengaged, the mechanical constraint is released, and the operating handle 3 can then move normally to drive the piston rod 2.

[0036] During the locking phase, after the operation is completed, the first locking part and the second locking part remain in a cooperating state, and the operating handle 3 is restricted to a predetermined position. Even if it is subjected to an external accidental collision or unintentional touch, the operating handle 3 will not be displaced, so the position of the piston rod 2 is stable, the oil circuit state of the hydraulic opening and closing mechanism does not change, and the support foot remains reliably locked.

[0037] During the unlocking operation, the user actively applies force to disengage the first locking part from the second locking part, and the operating handle 3 returns to its movable state. At this time, normal rotation or pulling of the operating handle 3 can drive the piston rod 2 to reciprocate, changing the oil circuit of the hydraulic opening and closing mechanism to realize the extension and retraction adjustment of the support foot. After the operation is completed, the first locking part is engaged with the second locking part again, that is, the locking stage is re-entered.

[0038] The control device of the photographic support device of this application, through the setting of the locking mechanism 4, effectively prevents the problem of the operating handle 3 accidentally being accidentally touched and causing the support foot to suddenly unlock, which is a problem in the prior art. This greatly improves the stability and safety of the photographic support device during use, avoids the risk of equipment tipping over or shooting interruption, and improves the stability of shooting operations.

[0039] In some embodiments, one of the first locking part and the second locking part is a plug 402, and the other is a socket 401 into which the plug 402 can extend; The connector 402 is inserted into the socket 401 so that the operating handle 3 is fixed relative to the drive cylinder 1, or the connector 402 is disengaged from the socket 401 so that the operating handle 3 is movable relative to the drive cylinder 1.

[0040] You can continue to refer to Figures 1 to 5 , Figures 1 to 5 In a preferred embodiment of the control device of this application, the locking mechanism 4 adopts a mechanical plug-in structure of connector 402 and socket 401 to achieve locking and unlocking: The first locking part is a socket 401 provided on the drive cylinder 1 (which can be directly formed on the outer wall of the drive cylinder 1, or provided on the outer wall of the drive cylinder 1 through other intermediate parts, and then the socket 401 is provided on the intermediate parts); the second locking part is a plug 402 provided on the operating handle 3 (which can be one or more pins, posts, tongues, etc. corresponding to the position of the socket 401); or the positions of the two can be interchanged.

[0041] In the locked state, the connector 402 extends into and remains inside the socket 401. At this time, the connector 402 and the side wall of the socket 401 form a reliable mechanical interference. The operating handle 3 is restricted in both the circumferential and axial directions relative to the drive cylinder 1 and cannot rotate or swing. Thus, the position of the operating handle 3 is fixed, the piston rod 2 will not move due to accidental operation of the handle, the hydraulic opening and closing mechanism oil circuit is stable, and the support foot remains reliably locked.

[0042] In the unlocked state, the user can actively pull the connector 402 out of the socket 401 (this can be done by pressing, flicking, or rotating). The mechanical interference is released, and the operating handle 3 regains its free movement. At this time, normal driving of the operating handle 3 can drive the piston rod 2 to reciprocate, completing the extension or opening and closing adjustment of the support foot. After the adjustment is completed, the connector 402 is reinserted into the socket 401 to quickly restore the lock.

[0043] Please continue to refer to Figures 1 to 5In the aforementioned preferred embodiment, a rotating connection portion 101 is provided on the outer side of the drive cylinder 1, spaced apart from the exposed end of the piston rod 2. One end of the operating handle 3 is rotatably connected to the rotating connection portion 101, and the middle part of the operating handle 3 is movably connected to the exposed end of the piston rod 2. The other end of the operating handle 3 is provided with one of a connector 402 and a socket 401. The other of the connector 402 and the socket 401 is provided on the side of the drive cylinder 1 facing away from the rotating connection portion 101.

[0044] In this embodiment, the operating handle 3 is designed as a lever structure with the rotating connection part 101 as the fulcrum. One end of the operating handle 3 (near the operating end) is provided with either a plug 402 or a socket 401, and the other is provided at the corresponding position of the drive cylinder 1, thereby realizing locking and unlocking.

[0045] The rotating connection part 101 is fixed on the outside of the drive cylinder body 1 and maintains an axial distance from the exposed end of the piston rod 2; one end (fulcrum end) of the operating handle 3 is hinged and rotatably connected to the rotating connection part 101; the middle part of the operating handle 3 is movably connected to the exposed end of the piston rod 2 through a universal joint, ball joint or pin; the other end (operating end) of the operating handle 3 is provided with a plug 402 (or socket 401), and the corresponding position of the drive cylinder body 1 is provided with a corresponding socket 401 (or plug 402).

[0046] When the support foot is adjusted and locked, the operating handle 3 is in a retracted position close to the drive cylinder 1. At this time, the connector 402 at the operating end of the operating handle 3 is inserted into the socket 401 on the drive cylinder 1 (or vice versa).

[0047] Because there is a fixed distance between the rotating connecting part 101 and the exposed end of the piston rod 2, the operating handle 3 forms a lever. The insertion and engagement of the connector 402 and the socket 401 creates a mechanical constraint at the operating end of the operating handle 3, preventing the operating handle 3 from rotating around the rotating connecting part 101 as an axis. Thus, the operating handle 3 is firmly locked as a whole. Even if there is an external collision or unintentional touch to the middle or operating end of the operating handle 3, this constraint force will prevent the operating handle 3 from swinging, the piston rod 2 will remain stationary, the hydraulic opening and closing mechanism will have stable oil circuit, and the support foot will be reliably locked.

[0048] Please continue to refer to Figures 1 to 5 In the aforementioned preferred embodiment, the locking mechanism 4 includes a first rotating block 41 disposed on the side of the drive cylinder 1 facing away from the rotating connection portion 101. The first rotating block 41 is rotatably connected to the drive cylinder 1, and the free end of the first rotating block 41 is recessed with an insertion port 401.

[0049] In this embodiment, the locking mechanism 4 adds a flip-up first rotating block 41 to the side of the drive cylinder 1 facing away from the rotating connection part 101, and designs the socket 401 as a movable structure, thereby further improving the locking reliability and operation convenience.

[0050] One end of the first rotating block 41 is rotatably connected to the drive cylinder 1 via a hinge or pin, and the other end is a free end; the free end of the first rotating block 41 is recessed with a socket 401; the operating end of the operating handle 3 is provided with a plug 402 (pin or post) corresponding to the socket 401.

[0051] After the support foot is adjusted, the user presses the operating handle 3 against the drive cylinder 1 to fit together. At this time, the connector 402 at the operating end of the operating handle 3 is aligned with the socket 401 of the first rotating block 41. Continuing to press down, the operating handle 3 pushes the first rotating block 41 to rotate slightly outward (or inward) around its hinge axis, flipping it at a small angle so that the connector 402 is smoothly aligned and inserted into the socket 401. After releasing the handle, the first rotating block 41 can quickly spring back to its original position under its own weight or the action of the built-in torsion spring / spring, generating positive pressure and mechanical interference between the socket 401 and the connector 402. At this time, the first rotating block 41 is in contact with the surface of the drive cylinder 1, and the operating handle 3 is fixed in the rigid triangular constraint formed by the connector 402, the socket 401, and the first rotating block 41. Even if the operating handle 3 is subjected to a large external force impact, it cannot be lifted or rotated, thus stabilizing the position of the piston rod 2 and reliably locking the support foot.

[0052] When the support foot needs to be adjusted, the user only needs to drive the operating handle 3 and apply a force to the operating handle 3 to make the free end of the first rotating block 41 flip outward: the first rotating block 41 rotates to make the socket 401 deviate from the original axis, and the plug 402 then automatically disengages from the socket 401; the constraint of the operating handle 3 is released, and the user can continue to pull the operating handle 3 to drive the piston rod 2 to adjust the extension and retraction of the support foot normally. After adjustment, simply press the operating handle 3 back onto the drive cylinder 1, and the first rotating block 41 will automatically return to its original position under the action of the spring or its own weight. The connector 402 will then be inserted back into the socket 401, and the locking will be completed.

[0053] With the first rotating block 41, the socket 401 has automatic alignment and assisted disengagement functions, making insertion smoother and disengagement less strenuous.

[0054] Please continue to refer to Figures 1 to 5 In the aforementioned preferred embodiment, a first protrusion 102 is provided on the side of the drive cylinder 1 facing away from the rotating connection portion 101. The first protrusion 102 is provided with an installation opening 1020. The first rotating block 41 can extend into the installation opening 1020 and is rotatably connected to the side wall of the installation opening 1020 through the damping rotating shaft 5.

[0055] In this embodiment, a first protrusion 102 is provided on the side of the drive cylinder 1 facing away from the rotating connection part 101, and a first rotating block 41 is rotatably connected to the mounting opening 1020 of the first protrusion 102 by a damping rotating shaft 5, so that the locking and unlocking process is smoother.

[0056] The first protrusion 102 is fixedly protruding from the outer wall of the drive cylinder 1, and has an upward-facing mounting opening 1020 inside; the lower part of the first rotating block 41 extends into the mounting opening 1020 and is rotatably connected to the two side walls of the mounting opening 1020 through the damping shaft 5; the damping shaft 5 provides a stable damping force, so that the first rotating block 41 can reliably stay at any rotation angle without the action of external force, and will not return to its original position or swing due to its own weight or slight vibration.

[0057] After the support foot is adjusted, the user presses the operating end of the operating handle 3 against the drive cylinder 1, and the connector 402 presses against the free end of the first rotating block 41, causing it to rotate outward at a small angle around the damping shaft 5; the connector 402 is smoothly inserted into the socket 401; after releasing, the first rotating block 41 slowly returns to its original position and fits against the surface of the drive cylinder 1 under the damping action of the damping shaft 5, while generating positive pressure on the connector 402, forming a firm mechanical lock; the operating handle 3 is constrained and cannot be lifted due to accidental contact, the piston rod 2 is in a stable position, and the support foot remains reliably locked.

[0058] When the support feet need adjustment, the user lightly flicks the free end of the first rotating block 41 with a single finger to rotate it outward. The connector 402 then disengages from the socket 401, the operating end of the operating handle 3 is lifted, and the lock is released. Due to the damping effect of the damping shaft 5, the first rotating block 41 will remain stably in the deflected position after being flicked and will not automatically return to the center, facilitating quick return when the operating handle 3 is locked. When the user finishes adjusting and presses the operating handle 3 back, the connector 402 can be smoothly inserted into the opened socket 401. After being inserted into place, the first rotating block 41 returns to the center and locks under the pressure of the connector 402.

[0059] Please refer to Figure 6 and Figure 7 , Figure 6 and Figure 7 In another preferred embodiment of this application, the locking mechanism 4 includes a second rotating block 42 and a self-weight locking member 43, wherein: One end of the second rotating block 42 is rotatably connected to the operating handle 3, and the free end of the second rotating block 42 is provided with a socket 401; The self-weight locking member 43 is slidably disposed on the side of the drive cylinder 1 away from the exposed end of the piston rod 2. The self-weight locking member 43 has a first receiving notch 431 for the free end of the second rotating block 42 to extend into. The inner wall of the first receiving notch 431 is provided with a plug 402. The self-weight locking member 43 can be driven by external force to make the plug 402 extend into or away from the socket 401.

[0060] In this embodiment, the socket 401 is set on the second rotating block 42 that rotates synchronously with the operating handle 3, and the plug 402 is set on the slidable self-weight locking member 43. Automatic locking and manual unlocking are achieved by using the gravity and external force of the self-weight locking member 43 to slide.

[0061] One end of the second rotating block 42 is hinged to the operating end of the operating handle 3, and the free end is recessed with an insertion port 401; the self-weight locking member 43 is block-shaped or strip-shaped and can be slidably disposed on the side away from the exposed end of the piston rod 2 along the vertical direction of the outer wall of the drive cylinder 1; the top of the self-weight locking member 43 has an upward-facing first receiving notch 431, and the inner wall of the notch is provided with a plug-in member 402; the self-weight locking member 43 automatically slides down to the lowest position under its own weight when there is no external force.

[0062] After the support foot is adjusted, the user presses the operating end of the operating handle 3 downwards to fit against the drive cylinder 1. The second rotating block 42 swings down synchronously with the operating handle 3, and its free end extends into the first receiving notch 431 of the self-weight locking member 43. At this time, the self-weight locking member 43 is at the lowest position of gravity sinking, and the plug 402 is aligned with and inserted into the socket 401 of the second rotating block 42. The plug 402 and the socket 401 form a firm mechanical interference, and the second rotating block 42 (i.e., the operating handle 3) is restricted from being lifted. Even if the operating handle 3 is subjected to external impact, the gravity of the self-weight locking member 43 will further press the mating surface, so that the locking force increases with the increase of the external force, achieving the self-locking effect of "the more it is hit, the tighter it becomes". The position of the piston rod 2 is stable, and the support foot remains reliably locked.

[0063] When the support feet need to be adjusted, the user only needs to gently push or lift the self-weight locking member 43 upward with one hand: the self-weight locking member 43 slides upward, and the plug 402 immediately disengages from the socket 401; the second rotating block 42 is unrestrained, and the operating end of the operating handle 3 can be lifted freely immediately, and the lock is released; continue to operate the operating handle 3 normally to drive the piston rod 2 to adjust the support feet; after the adjustment is completed, release the self-weight locking member 43, which slides down rapidly under its own weight, and the plug 402 automatically inserts into the waiting socket 401, completing the relocking in one go without any additional alignment action.

[0064] Please refer to Figures 8 to 11 , Figures 8 to 11 In another preferred embodiment of this application, in this preferred embodiment, the socket 401 is provided on the operating handle 3, and the side of the drive cylinder 1 facing away from the rotating connection part 101 is provided with a second protrusion 103, and the second protrusion 103 is provided with a mounting groove 1021 for installing the plug 402. The control device 100 also includes a first elastic element, which is disposed between the plug 402 and the bottom wall of the mounting groove 1021, with one end of the plug 402 facing away from the first elastic element exposed in the mounting groove 1021.

[0065] In this embodiment, the socket 401 is set at the operating end of the operating handle 3, and the connector 402 is designed as a retractable structure driven by the first elastic element, so as to achieve the effect of automatically locking when the handle is put down and automatically unlocking when the handle is lifted.

[0066] The operating end of the operating handle 3 (the end away from the rotating connection part 101) has a recessed insertion port 401; the drive cylinder 1 has a second protrusion 103 fixedly protruding on the side opposite to the rotating connection part 101, and the second protrusion 103 has an upwardly opening mounting groove 1021; the plug 402 (pin or post) is axially slidably placed in the mounting groove 1021; the first elastic element (usually a compression spring) is placed between the bottom of the plug 402 and the bottom wall of the mounting groove 1021, and normally pushes the plug 402 upward to protrude a certain height above the top of the mounting groove 1021.

[0067] After the support feet are adjusted, the user presses the operating end of the operating handle 3 downwards to fit against the drive cylinder 1. During the downward pressing of the operating handle 3, the lower edge of the socket 401 first contacts the top of the connector 402. As the user continues to press down, the connector 402 is pressed into the mounting groove 1021, and the first elastic element is compressed and stores energy. When the operating handle 3 fits against the drive cylinder 1, the socket 401 just covers the exposed connector 402. After it is in place, the first elastic element immediately releases its elastic force, pushing the connector 402 upwards into the socket 401. The connector 402 and the side wall of the socket 401 form mechanical interference, so the operating handle 3 cannot be lifted due to accidental contact, the piston rod 2 is in a stable position, and the support feet remain reliably locked.

[0068] When the support foot needs to be adjusted, the user only needs to pull the operating handle 3 upward normally: when the operating handle 3 is initially lifted, the socket 401 overcomes the pushing force of the first elastic element and disengages from the connector 402; the connector 402 immediately returns to its original position and extends under the action of the first elastic element, waiting for the next insertion; the whole unlocking process is the same as the normal adjustment of the support foot, without the need for additional buttons or toggles, and can be completed in one go with one hand.

[0069] In some embodiments, the exposed end of the connector 402 is spherically shaped.

[0070] By setting the exposed end of the connector 402 to a spherical shape, this embodiment enables the operating handle 3 to automatically align and smoothly insert during the return locking process. Even if there is a slight angular or positional deviation between the socket 401 and the connector 402 when the operating handle 3 is pressed down, the spherical end can slide and guide at the moment of contact, allowing the socket 401 to automatically align and smoothly fit into the connector 402 without the need for the user to deliberately align it; at the same time, the spherical contact greatly reduces insertion resistance and wear, making the locking action smoother and lighter with almost no jamming, further improving the operating feel and locking success rate.

[0071] Please refer to Figures 12 to 16 ,Figures 12 to 16 In another preferred embodiment of the present application, the insertion port 401 is disposed on the side of the drive cylinder 1 facing away from the rotating connection part 101; the operating handle 3 includes a first connecting arm 31 and a second connecting arm 32 that are separately disposed. One end of the first connecting arm 31 is rotatably connected to the rotating connection part 101, the middle part of the first connecting arm 31 is movably connected to the exposed end of the piston rod 2, the other end of the second connecting arm 32 is movably connected to the first connecting arm 31, and the insertion member 402 is disposed on the second connecting arm 32.

[0072] In this embodiment, the operating handle 3 is designed as a foldable double-link structure (first link arm 31 and second link arm 32). The insertion port 401 is fixedly set on the side of the drive cylinder 1 facing away from the rotating connection part 101, thereby achieving a more reliable locking and a more compact storage state while maintaining the traditional lever drive method.

[0073] In some embodiments, the second link arm 32 is movably connected to the other end of the first link arm 31. This movable connection can be a sliding connection or a rotating connection, that is, the second link arm 32 is slidably connected to the first link arm 31 and / or rotatedly connected.

[0074] Taking a rotating connection as an example, one end of the first connecting rod arm 31 is hinged to the rotating connection part 101 and rotatably connected to the exposed end of the piston rod 2 in the middle; one end of the second connecting rod arm 32 is movably connected to the free end of the first connecting rod arm 31 through a hinge or ball joint, and the other end is provided with a plug 402; the plug 401 is fixedly recessed or fixedly protruded at the corresponding position of the drive cylinder 1; the first connecting rod arm 31 and the second connecting rod arm 32 can be folded or unfolded relative to each other.

[0075] After the support foot is adjusted, the user presses the operating handle 3 downwards as a whole: the first connecting arm 31 rotates around the rotating connection part 101, and at the same time drives the second connecting arm 32 to swing down synchronously; the second connecting arm 32 unfolds at the end of the swing and is basically in a straight line with the first connecting arm 31; the plug 402 is precisely inserted into the socket 401 fixed in the drive cylinder 1; at this time, the double connecting rod extends to form a rigid rod, and the cooperation between the plug 402 and the socket 401 is mechanically constrained at the end of the second connecting arm 32, and the operating handle 3 is locked as a whole. Even if subjected to a large external force, the operating handle 3 cannot be lifted or folded, the piston rod 2 is in a stable position, and the support foot remains reliably locked.

[0076] When the support foot needs adjustment, the user holds the second linkage arm 32 and pulls it upwards: initially, the connector 402 is pulled directly out of the socket 401, and the lock is immediately released; continuing to pull upwards, the first linkage arm 31 rotates around the rotating connection part 101, driving the piston rod 2 to reciprocate through the middle connection; during the pulling process, the second linkage arm 32 can be slightly folded or rotated relative to the first linkage arm 31 to adapt to different operating angles, providing a more ergonomic grip posture and a larger operating lever arm; after adjustment, simply straighten the second linkage arm 32 and press it down, the connector 402 automatically inserts into the socket 401, the folding handle becomes a rigid whole again, and the lock is completed.

[0077] Taking a sliding connection as an example, in some embodiments, an elastic reset element (usually a built-in tension spring or compression spring) is added at the sliding connection between the second link arm 32 and the first link arm 31.

[0078] During the locking process, when the user presses the operating handle 3 down, the first linkage arm 31 rotates, and the second linkage arm 32 automatically slides outward and extends under the pulling (or pushing) force of the elastic reset member; after the operating handle 3 is in place, the plug 402 is inserted into the socket 401 on the drive cylinder 1 with the assistance of elastic force.

[0079] During the unlocking and operation process, the user holds the second linkage arm 32 and pulls it away from the first linkage arm 31. The connector 402 first pulls out the socket 401, releasing the lock between the operating handle 3 and the drive cylinder 1; then the user continues to move the operating handle 3 for adjustment.

[0080] Please refer to Figures 12 to 16 In another preferred embodiment described above, the second link arm 32 is rotatably connected to the first link arm 31; The first link arm 31 has a rotation opening 310 at one end away from the rotation connection part 101. One end of the second link arm 32 can extend into the rotation opening 310 and is rotatably connected to the side wall of the rotation opening 310 through the spring shaft 6.

[0081] When the user presses the operating handle 3 down or releases it, the spring force stored in the spring shaft 6 automatically drives the second linkage arm 32 to flip outward relative to the first linkage arm 31 until the two linkage arms are basically in a straight line of 180°, and the connector 402 is aligned and inserted into the fixed socket 401 on the drive cylinder 1.

[0082] After the connector 402 is inserted into the socket 401, the torque of the spring shaft 6 continues to maintain the tendency of the second link arm 32 to extend outward, so that the double link is always in a stretched state, further enhancing the bending rigidity and impact resistance of the entire handle. Even if subjected to a large external force collision, the double link will not fold or loosen, ensuring that the locking is absolutely reliable.

[0083] During operation, moderate damping and automatic return assist are provided. When the operating handle 3 is turned to adjust the support foot, the second linkage arm 32 can overcome the elasticity of the spring shaft 6 and fold moderately relative to the first linkage arm 31 to adapt to different grip angles. After releasing the hand, the spring shaft 6 immediately pulls the second linkage arm 32 back to the most comfortable grip position that is close to a straight line, improving the operating feel and consistency.

[0084] Please refer to Figures 12 to 16 In another preferred embodiment, a third protrusion 104 is provided on the side of the drive cylinder 1 facing away from the rotating connection part 101, and an insertion port 401 is provided on the peripheral wall of the third protrusion 104. The end of the second linkage arm 32 that extends into the rotation opening 310 is partially thinned to form a second receiving notch 320, and the side wall of the second receiving notch 320 is provided with a plug 402.

[0085] Please refer to Figures 17 to 21 , Figures 17 to 21 In another preferred embodiment proposed in this application, the second link arm 32 is slidably connected to the first link arm 31; The drive cylinder 1 has a first tongue 105 protruding on the side opposite to the rotating connection part 101, and a socket 401 is provided on the first tongue 105. The first connecting rod arm 31 has a first insertion interface 311 for the first tongue 105 to be inserted. The first connecting arm 31 is hollow and has a sliding cavity 312. The side wall of the first insertion interface 311 is provided with a first through hole 3110 for connecting the first insertion interface 311 and the sliding cavity 312. The second link arm 32 is provided with a connector 402, which is slidably disposed in the sliding cavity 312, and the end of the connector 402 away from the second link arm 32 can extend into the first insertion interface 311 through the first through hole 3110.

[0086] In this embodiment, the connector 402 is completely hidden inside the first connecting arm 31. The extension and retraction of the connector 402 is directly driven by the sliding of the second connecting arm 32, achieving a minimalist appearance and higher locking strength. Specifically, the drive cylinder 1 has a first tongue 105 protruding upward on the side opposite to the rotating connection part 101, and a fixing port 401 is opened on the top or side of the tongue; the first connecting arm 31 has a first insertion interface 311 (for the first tongue 105 to extend into), and a first through hole 3110 is opened on the inner side wall of the first insertion interface 311; a sliding cavity 312 is formed inside the first connecting arm 31; the second connecting arm 32 as a whole or its front end can slide into the sliding cavity 312; the connector 402 is fixed to the front end of the second connecting arm 32 and is normally hidden in the sliding cavity 312.

[0087] After the support feet are adjusted, the user presses the operating handle 3 down and pushes it towards the drive cylinder 1: the first connecting arm 31 swings down, and the first insertion interface 311 fits into the first insertion tongue 105; the user continues to push the second connecting arm 32 inward along the axial direction (or presses the entire handle inward); the second connecting arm 32 slides inward relative to the first connecting arm 31, driving the insertion piece 402 forward along the sliding cavity 312, and directly extending into the insertion port 401 on the first insertion tongue 105 through the first through hole 3110; after the insertion piece 402 is fully inserted, the first insertion tongue 105 is simultaneously locked in the first insertion interface 311. Through the double mechanical constraint of the first insertion tongue and the insertion piece 402, the operating handle 3 and the drive cylinder 1 form an integral rigid lock, and the handle cannot be lifted, pulled outward, or folded.

[0088] Please continue to refer to Figures 17 to 21 Furthermore, in this preferred embodiment, the locking mechanism 4 also includes an auxiliary locking member 7 disposed on one side of the plug 402. The auxiliary locking member 7 is disposed inside the first linkage arm 31 and is connected to the first linkage arm 31 through the second elastic member 8. The second elastic member 8 is used to drive the auxiliary locking member 7 to abut against the side of the first tongue 105 where the plug 401 is not provided. A linkage structure 9 is provided between the auxiliary locking member 7 and the plug member 402. The linkage structure 9 is used to ensure that when the plug member 402 is away from the socket 401, the auxiliary locking member 7 is away from the side of the first tongue 105 where the socket 401 is not provided.

[0089] This embodiment, based on the original concealed sliding connector 402, further adds an auxiliary locking component 7, a second elastic component 8, and a linkage structure 9, forming a double-safety locking mechanism of "main connector + side clamping," which significantly improves locking strength and vibration resistance. Specifically, the auxiliary locking component 7 is located inside the sliding cavity 312 of the first linkage arm 31, parallel to the connector 402; the second elastic component 8 (compression spring) constantly pushes the auxiliary locking component 7 to the side of the first tongue 105 where the insertion port 401 is not open (usually the opposite side); the linkage structure 9 (which can be a slanted cam, a slanted pin, or a linkage mechanism) connects the connector 402 and the auxiliary locking component 7.

[0090] The user presses down the operating handle 3 and pushes the second linkage arm 32 inward; the connector 402 first inserts into the socket 401 (main locking) through the first through hole 3110. When the connector 402 continues to go deeper, the linkage structure 9 releases the restriction on the auxiliary locking member 7. The second elastic member 8 immediately drives the auxiliary locking member 7 to extend forward and press against (or be slightly recessed) the opposite side of the first tongue 105. At this time, the first tongue 105 is clamped from both sides by the connector 402 (front insertion) and the auxiliary locking member 7 (side clamping), forming a two-way gapless constraint. The rigidity between the operating handle 3 and the drive cylinder 1 is extremely strong. Even if subjected to severe vibration or lateral impact, the first tongue 105 cannot shake or come out, and the locking is reliable.

[0091] When the user pulls the second linkage arm 32 outward, the connector 402 retracts, and the linkage structure 9 simultaneously forces the auxiliary locking component 7 back, overcoming the elastic force of the second elastic component 8 to move it away from the first tongue 105. The lateral clamping force disappears first, and the connector 402 then completely exits the socket 401, thus releasing the double lock in one go.

[0092] Please refer to Figure 22 and Figure 23 , Figure 22 and Figure 23 In another preferred embodiment of this application, the control device 100 further includes an unlocking mechanism. The connector 402 is disposed on the drive cylinder 1 or the operating handle 3 via a third elastic member. The unlocking mechanism is used to drive the connector 402 to disengage from the socket 401, and the third elastic member is used to drive the connector 402 to reset.

[0093] During normal use, the third elastic element automatically drives the connector 402 to insert into the socket 401 and maintain a locked state, achieving reliable locking without any additional action from the user; When the support feet need to be adjusted, the user only needs to operate the unlocking mechanism (such as pressing the button, turning the wrench or stepping on the pedal) to quickly force the connector 402 to overcome the elastic force of the third elastic element and disengage from the socket 401, thus completing the unlocking instantly; after releasing the hand, the third elastic element immediately drives the connector 402 to reset and extend, waiting for the handle to return to its position next time to automatically insert and lock.

[0094] Preferably, a second tongue 106 protrudes from the side of the drive cylinder 1 facing away from the rotating connection part 101, and the free end of the second tongue 106 is provided with a socket 401. The connector 402 is movably disposed inside the operating handle 3. The operating handle 3 has a second insertion interface, which allows the second tongue 106 to extend into the operating handle 3 so that the connector 402 can be inserted into the insertion port 401.

[0095] Preferably, the connector 402 includes a first crossbeam 4021, second vertical arms 4022 disposed on both sides of the first crossbeam 4021, and a pin 4023 disposed on the first crossbeam 4021. The pin 4023 is located between the first crossbeam 4021 and the two second vertical arms 4022, and the pin 4023 is engaged with the socket 401. The unlocking mechanism includes an unlocking button 11. One end of the unlocking button 11 extends into the operating handle 3 to connect to the end of the second vertical arm 4022 away from the first crossbeam 4021. The other end of the unlocking button 11 is exposed outside the operating handle 3. The unlocking button 11 is used to drive the pin 4023 to disengage from the socket 401.

[0096] Preferably, one end of the unlock button 11 that extends into the operating handle 3 contacts the end of the second vertical arm 4022 away from the first crossbeam 4021 via an inclined surface.

[0097] Furthermore, this application proposes a photographic support device, comprising: The support leg is equipped with a hydraulic opening and closing mechanism, which is used to control the movement of the support leg. As described in the foregoing embodiments, the control device 100 is used to control the hydraulic opening and closing mechanism.

[0098] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A control device for a photographic support device, the photographic support device comprising a support leg, the support leg being provided with a hydraulic opening and closing mechanism, the hydraulic opening and closing mechanism being used to control the movement of the support leg, and the control device being used to control the hydraulic opening and closing mechanism, characterized in that, The control device includes: A drive cylinder is connected to the hydraulic opening and closing mechanism; A piston rod, which is movably disposed within the drive cylinder, with one end of the piston rod exposed outside the drive cylinder; An operating handle is movably connected to one end of the piston rod exposed outside the drive cylinder, and the operating handle is used to drive the piston rod to move. The locking mechanism includes a first locking part disposed on one of the drive cylinder and the operating handle, and a second locking part disposed on the other. When the first locking part and the second locking part are engaged, the operating handle is fixed relative to the drive cylinder. When the first locking part and the second locking part are disengaged, the operating handle can move relative to the drive cylinder.

2. The control device for the photographic support device according to claim 1, characterized in that, One of the first locking part and the second locking part is a plug-in, and the other is a socket into which the plug-in can be inserted; The connector is inserted into the socket to fix the operating handle relative to the drive cylinder, or the connector is disengaged from the socket to make the operating handle movable relative to the drive cylinder.

3. The control device for the photographic support device according to claim 2, characterized in that, The outer side of the drive cylinder is provided with a rotating connection part spaced apart from the exposed end of the piston rod. One end of the operating handle is rotatably connected to the rotating connection part, and the middle part of the operating handle is movably connected to the exposed end of the piston rod. The other end of the operating handle is provided with one of the plug and the socket. The other of the plug and the socket is provided on the side of the drive cylinder facing away from the rotating connection part.

4. The control device for the photographic support device according to claim 3, characterized in that, The locking mechanism includes a first rotating block disposed on the side of the drive cylinder opposite to the rotating connection portion. The first rotating block is rotatably connected to the drive cylinder, and the free end of the first rotating block is recessed with the insertion port.

5. The control device for the photographic support device according to claim 4, characterized in that, The drive cylinder body has a first protrusion on the side opposite to the rotating connection part. The first protrusion has an installation opening. The first rotating block can extend into the installation opening and is rotatably connected to the side wall of the installation opening through a damping shaft.

6. The control device for the photographic support device according to claim 3, characterized in that, The locking mechanism includes a second rotating block and a self-locking element, wherein: One end of the second rotating block is rotatably connected to the operating handle, and the free end of the second rotating block is provided with the socket; The self-weight locking member is slidably disposed on the side of the drive cylinder away from the exposed end of the piston rod. The self-weight locking member has a first receiving notch for the free end of the second rotating block to extend into. The inner wall of the first receiving notch is provided with the plug-in member. The self-weight locking member can be driven by external force to make the plug-in member extend into or away from the socket.

7. The control device for the photographic support device according to claim 3, characterized in that, The socket is provided on the operating handle, and a second protrusion is provided on the side of the drive cylinder facing away from the rotating connection part. The second protrusion is provided with a mounting groove for installing the connector. The control device further includes a first elastic element, which is disposed between the plug and the bottom wall of the mounting groove, with one end of the plug facing away from the first elastic element exposed in the mounting groove.

8. The control device for the photographic support device according to claim 7, characterized in that, The exposed end of the connector is spherical.

9. The control device for the photographic support device according to claim 3, characterized in that, The insertion port is located on the side of the drive cylinder facing away from the rotating connection part; the operating handle includes a first connecting arm and a second connecting arm that are separately configured, one end of the first connecting arm is rotatably connected to the rotating connection part, the middle part of the first connecting arm is movably connected to the exposed end of the piston rod, the second connecting arm is movably connected to the other end of the first connecting arm, and the insertion member is located on the second connecting arm.

10. The control device for the photographic support device according to claim 9, characterized in that, The second link arm is slidably connected and / or rotatably connected to the first link arm.

11. The control device for the photographic support apparatus according to claim 10, characterized in that, The second link arm is rotatably connected to the first link arm; The first link arm has a rotation opening at one end away from the rotation connection part, and one end of the second link arm can extend into the rotation opening and be rotatably connected to the side wall of the rotation opening through a spring shaft.

12. The control device for the photographic support apparatus according to claim 11, characterized in that, The drive cylinder body has a third protrusion on the side opposite to the rotating connection part, and the peripheral wall of the third protrusion is provided with the insertion port; The end of the second connecting arm that extends into the rotating opening is partially thinned to form a second receiving notch, and the side wall of the second receiving notch is provided with the plug-in member.

13. The control device for the photographic support apparatus according to claim 10, characterized in that, The second link arm is slidably connected to the first link arm; The drive cylinder body has a first tongue protruding on the side opposite to the rotating connection part, the insertion port is provided on the first tongue, and the first connecting rod arm has a first insertion interface for the first tongue to be inserted. The first connecting arm is hollow and has a sliding cavity, and the side wall of the first insertion interface has a first through hole for connecting the first insertion interface and the sliding cavity; The second link arm is provided with the plug-in member, which is slidably disposed in the sliding cavity, and the end of the plug-in member away from the second link arm can extend into the first plug-in interface through the first through hole.

14. The control device for the photographic support device according to claim 13, characterized in that, The locking mechanism further includes an auxiliary locking member disposed on one side of the connector. The auxiliary locking member is disposed inside the first linkage arm and connected to the first linkage arm through a second elastic member. The second elastic member is used to drive the auxiliary locking member to abut against the side of the first tongue where no insertion port is provided. A linkage structure is provided between the auxiliary locking member and the plug-in member. The linkage structure is used to ensure that when the plug-in member moves away from the socket, the auxiliary locking member moves away from the side of the first tongue where the socket is not provided.

15. The control device for the photographic support device according to claim 3, characterized in that, The control device further includes an unlocking mechanism. The connector is disposed on the drive cylinder or the operating handle via a third elastic element. The unlocking mechanism is used to drive the connector to disengage from the socket, and the third elastic element is used to drive the connector to reset.

16. The control device for the photographic support apparatus according to claim 15, characterized in that, The drive cylinder body has a second tongue protruding on the side opposite to the rotating connection part, and the free end of the second tongue is provided with the insertion port; The connector is movably disposed inside the operating handle. The operating handle has a second connector for the second tongue to extend into the operating handle so that the connector can be inserted into the connector.

17. The control device for the photographic support device according to claim 16, characterized in that, The connector includes a first crossbeam, second vertical arms disposed on both sides of the first crossbeam, and a pin disposed on the first crossbeam. The pin is located between the first crossbeam and the two second vertical arms, and the pin is engaged with the socket. The unlocking mechanism includes an unlocking button, one end of which extends into the operating handle to connect to the end of the second vertical arm away from the first crossbeam, and the other end of which protrudes from the operating handle. The unlocking button is used to drive the pin to disengage from the socket.

18. The control device for the photographic support apparatus according to claim 17, characterized in that, One end of the unlock button, which extends into the operating handle, contacts the end of the second vertical arm away from the first crossbeam via an inclined surface.

19. A photographic support device, characterized in that, include: The support leg is equipped with a hydraulic opening and closing mechanism, which is used to control the movement of the support leg. The control device according to any one of claims 1-18, wherein the control device is used to control the hydraulic opening and closing mechanism.

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