Photographic support capable of being unlocked and locked through electric control

Abstract

The utility model discloses an electric control unlocking and locking camera support which comprises a three-cutting seat, a first telescopic foot tube, a second telescopic foot tube, a third telescopic foot tube, a first electric drive unlocking and locking mechanism, a second electric drive unlocking and locking mechanism, a third electric drive unlocking and locking mechanism and an unlocking and locking switch, wherein the first telescopic foot tube, the second telescopic foot tube and the third telescopic foot tube are operably connected to the three-cutting seat; the first electric drive unlocking and locking mechanism is arranged on the first telescopic foot tube, the second electric drive unlocking and locking mechanism is arranged on the second telescopic foot tube, and the third electric drive unlocking and locking mechanism is arranged on the third telescopic foot tube. The unlocking and locking switch is arranged on the three-cutting seat and electrically connected with the first electric-drive unlocking and locking mechanism, the second electric-drive unlocking and locking mechanism and the third electric-drive unlocking and locking mechanism. By means of the structure, one-button type electric control unlocking and locking of the three telescopic foot pipes can be achieved, the operation convenience when the camera support is unfolded and folded is greatly improved, and the use requirement is met.

Description

Technical Field

[0001] The utility model relates to the field of photographic equipment, in particular to an electrically controlled unlocking photographic bracket. Background Art

[0002] With the improvement of living standards, more and more people love photography. In order to pursue higher and more sophisticated still or motion photography and videography, they usually use brackets to support the shooting equipment. Existing photography brackets are generally divided into manual release, hydraulic automatic release and electronic automatic release. Among them:

[0003] 1. The manual unlocking is manually operated, but each telescopic leg needs to be manually unlocked once, which is inconvenient to operate;

[0004] 2. The hydraulic automatic unlocking method uses hydraulic drive to unlock each telescopic leg tube with one button. The hydraulic oil in the oil circuit is controlled by operating the button to generate the driving force for unlocking. However, its oil circuit structure is relatively complex and involves problems such as oil circuit sealing, which brings the disadvantages of high cost and poor product stability.

[0005] 3. The electronically controlled automatic unlocking uses a motor as a power source. For example, Chinese patent CN2022231247392 discloses a bracket with a three-button structure, that is, one button controls the unlocking of one leg. When fully unfolded, three buttons need to be pressed, which also causes certain inconveniences.

[0006] Therefore, there is an urgent need for a photographic support with an electronically controlled unlocking mechanism to solve the above problems. Utility Model Content

[0007] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a photographic stand with an electrically controlled unlocking function.

[0008] An embodiment of the present invention solves the technical problem by adopting a technical solution: an electrically controlled unlocking photographic stand, comprising a three-cutting base and a first telescopic leg, a second telescopic leg, and a third telescopic leg operably connected to the three-cutting base, and further comprising a first electrically driven unlocking mechanism, a second electrically driven unlocking mechanism, a third electrically driven unlocking mechanism, and an unlocking switch;

[0009] A first electrically driven unlocking mechanism is installed on the first telescopic leg, a second electrically driven unlocking mechanism is installed on the second telescopic leg, and a third electrically driven unlocking mechanism is installed on the third telescopic leg, respectively used to control the first telescopic leg, the second telescopic leg, and the third telescopic leg to enter an unlocked state and deploy, or to control the first telescopic leg, the second telescopic leg, and the third telescopic leg to enter a locked state to maintain the deployed or retracted state;

[0010] The unlocking switch is arranged on the three-cut seat and is electrically connected to the first electric drive unlocking mechanism, the second electric drive unlocking mechanism and the third electric drive unlocking mechanism.

[0011] As one of the preferred embodiments of the present invention, the first electric drive unlocking mechanism includes a first motor, a first transmission assembly, a first linkage rod and a plurality of unlocking assemblies;

[0012] The first motor is mounted on the first telescopic leg;

[0013] The first transmission assembly is connected to the output shaft of the first motor;

[0014] The first linkage rod is connected to the first transmission assembly;

[0015] The unlocking assembly is connected between two adjacent tubes of the first telescopic leg and is connected to the first linkage rod;

[0016] The first motor can drive the unlocking assembly to release the restriction between the two adjacent tubes of the first telescopic leg when rotating forward, or drive the unlocking assembly to restrict the movement between the two adjacent tubes of the first telescopic leg when rotating reverse.

[0017] As one of the preferred embodiments of the present invention, the first transmission assembly includes a worm and a worm wheel, one end of the worm is connected to the output shaft of the first motor, and the worm wheel is connected to the first linkage rod and meshes with the other end of the worm.

[0018] As one of the preferred embodiments of the present invention, a through slot is provided on the first telescopic leg, one end of the through slot is communicated with the outside, and the first transmission assembly is arranged opposite to the other end of the through slot or at least partially extends into the through slot.

[0019] As one of the preferred embodiments of the present invention, the unlocking and locking assembly includes a driving ring, a movable seat, a limit seat, a reset member and a plurality of pressing balls;

[0020] The drive ring is mounted on the first linkage rod and is configured to move axially relative to the first linkage rod when the first linkage rod rotates;

[0021] The movable seat is mounted on the first linkage rod and has a distance between it and the driving ring;

[0022] The limiting seat is connected to the inner tube between two adjacent tube bodies and has a pressing inclined surface on its outer wall;

[0023] The reset member abuts between the movable seat and the limit seat;

[0024] The pressing ball is mounted on the movable seat and contacts the pressing inclined surface and the outer tube between two adjacent tube bodies;

[0025] The driving ring can push the movable seat away from the limit seat when the first linkage rod rotates forward, so that the pressing ball releases the contact with the pressing inclined surface and the outer tube between the two adjacent tube bodies, thereby releasing the restriction between the two adjacent tube bodies of the first telescopic leg; or, the driving ring can move away from the limit seat when the first linkage rod rotates reversely, so that the pressing ball contacts the pressing inclined surface and the outer tube between the two adjacent tube bodies when the reset member pushes the movable seat close to the limit seat, thereby restricting the movement between the two adjacent tube bodies of the first telescopic leg.

[0026] As one of the preferred embodiments of the present invention, the movable seat includes an inner ring and an outer ring, the limit seat is inserted between the inner ring and the outer ring, the pressure ball is installed on the outer ring, and the reset member is arranged between the inner wall of the limit seat and the outer wall of the inner ring.

[0027] As one of the preferred embodiments of the present invention, a first limiting ring is provided at the lower end of the inner ring, a second limiting ring is provided at the upper end of the limiting seat, and the reset member abuts between the first limiting ring and the second limiting ring.

[0028] As one of the preferred embodiments of the present invention, the reset member is configured as a spring.

[0029] As one of the preferred embodiments of the present invention, an electrically controlled unlocking photographic bracket also includes a side handle mounted on a three-cutting seat and a battery mounted on the side handle. The unlocking switch is arranged on the side handle, and the battery is electrically connected to the first electrically driven unlocking mechanism, the second electrically driven unlocking mechanism, the third electrically driven unlocking mechanism and the unlocking switch.

[0030] As one of the preferred embodiments of the present invention, a first conductive part electrically connected to the first electric drive unlocking mechanism, the second electric drive unlocking mechanism and the third electric drive unlocking mechanism is provided on the three-cut seat, and a second conductive part electrically connected to the battery and the unlocking switch is provided on the side handle. The first conductive part can be electrically contacted with the second conductive part when the side handle is installed on the three-cut seat.

[0031] The beneficial effects of the present invention are as follows: an electrically controlled unlocking photographic stand comprises a three-cutting base and a first telescopic leg, a second telescopic leg and a third telescopic leg operably connected to the three-cutting base, and further comprises a first electrically driven unlocking mechanism, a second electrically driven unlocking mechanism, a third electrically driven unlocking mechanism and an unlocking switch; the first electrically driven unlocking mechanism is mounted on the first telescopic leg, the second electrically driven unlocking mechanism is mounted on the second telescopic leg, and the third electrically driven unlocking mechanism is mounted on the third telescopic leg, respectively for controlling the first The telescopic leg, the second telescopic leg and the third telescopic leg enter the unlocked state and unfold, or the first telescopic leg, the second telescopic leg and the third telescopic leg are controlled to enter the locked state to maintain the unfolded or folded state; the unlocking switch is arranged on the three-cut seat and is electrically connected to the first electric drive unlocking mechanism, the second electric drive unlocking mechanism and the third electric drive unlocking mechanism; through the above structure, the one-button electric control unlocking of the three telescopic legs can be realized, which greatly improves the convenience of operation when unfolding and folding the photographic bracket and meets the usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0033] Figure 1 It is a structural diagram of a photographic stand with electronically controlled unlocking;

[0034] Figure 2 An exploded view of an electronically unlocked photographic stand;

[0035] Figure 3 A cross-sectional view of a photographic stand with electronically controlled unlocking;

[0036] Figure 4 for Figure 2 A partial enlarged view of area A in the middle;

[0037] Figure 5 for Figure 3 A partial enlarged view of the middle B area;

[0038] Figure 6 The following is a schematic diagram of the control circuit of a photographic stand with electronically controlled unlocking. DETAILED DESCRIPTION

[0039] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0040] In the description of this utility model, "above," "below," and "within" are understood to be exclusive of the number indicated, while "above," "below," and "within" are understood to be inclusive of the number indicated. The use of "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, or implicitly specifying the number or order of the technical features indicated.

[0041] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0042] In this utility model, unless otherwise expressly defined, terms such as "disposed," "installed," and "connected" should be interpreted broadly. For example, they may refer to direct connection or indirect connection through an intermediate medium; fixed connection or detachable connection or integral molding; mechanical connection; internal communication between two components or interaction between two components. Those skilled in the art can reasonably determine the specific meanings of these terms in this utility model based on the specific content of the technical solution.

[0043] Reference Figures 1 to 6 A photographic stand with electrically controlled unlocking includes a three-cutting base 100 and a first telescopic leg 200, a second telescopic leg 300, and a third telescopic leg 400 operably connected to the three-cutting base 100, and further includes a first electrically driven unlocking mechanism 500, a second electrically driven unlocking mechanism 600, a third electrically driven unlocking mechanism 700, and an unlocking switch 110.

[0044] The first electrically driven unlocking mechanism 500 is mounted on the first telescopic leg 200, the second electrically driven unlocking mechanism 600 is mounted on the second telescopic leg 300, and the third electrically driven unlocking mechanism 700 is mounted on the third telescopic leg 400. These mechanisms are respectively used to control the first telescopic leg 200, the second telescopic leg 300, and the third telescopic leg 400 to enter an unlocked state and deploy, or to control the first telescopic leg 200, the second telescopic leg 300, and the third telescopic leg 400 to enter a locked state to maintain the deployed or retracted state.

[0045] The unlocking switch 110 is provided on the three-way cutter base 100 and is electrically connected to the first electric unlocking mechanism 500 , the second electric unlocking mechanism 600 and the third electric unlocking mechanism 700 .

[0046] 1) In the present invention, the switching of a photographic stand from a folded state to an unfolded state is used as an example for explanation. During use, an unlocking instruction and a locking instruction are sent by operating the unlocking switch 110. When the unlocking switch 110 is pressed, an unlocking instruction is simultaneously sent to the first electric drive unlocking mechanism 500, the second electric drive unlocking mechanism 600, and the third electric drive unlocking mechanism 700, thereby simultaneously unlocking the telescopic joints of the first telescopic leg 200, the second telescopic leg 300, and the third telescopic leg 400, thereby causing the telescopic legs to automatically unfold under the action of gravity. When the photographic stand is unfolded, pressing the unlocking switch 110 again will simultaneously send a locking instruction to the first electric drive unlocking mechanism 500, the second electric drive unlocking mechanism 600, and the third electric drive unlocking mechanism 700, thereby simultaneously locking the telescopic joints of the first telescopic leg 200, the second telescopic leg 300, and the third telescopic leg 400, thereby maintaining the unfolded state.

[0047] 2) Reference Figure 3 and Figure 5 In some embodiments, the first electric-driven unlocking mechanism 500 includes a first motor 510, a first transmission assembly 520, a first linkage rod 530, and a plurality of unlocking assemblies 540; the first motor 510 is mounted on the first telescopic leg 200; the first transmission assembly 520 is connected to the output shaft of the first motor 510; the first linkage rod 530 is connected to the first transmission assembly 520; the unlocking assembly 540 is connected between two adjacent tubes of the first telescopic leg 200 and is connected to the first linkage rod 530; the first motor 510 can drive the unlocking assembly 540 to release the restriction between the two adjacent tubes of the first telescopic leg 200 when rotating in the forward direction, or drive the unlocking assembly 540 to restrict the movement between the two adjacent tubes of the first telescopic leg 200 when rotating in the reverse direction.

[0048] In a further embodiment, the unlocking assembly 540 includes a drive ring 541, a movable seat 542, a limit seat 543, a reset member 544 and a plurality of pressure balls 545; the drive ring 541 is mounted on the first linkage rod 530, and is used for axial movement relative to the first linkage rod 530 when the first linkage rod 530 rotates; the movable seat 542 is mounted on the first linkage rod 530 and is spaced apart from the drive ring 541; the limit seat 543 is connected to the inner tube 200a between the two adjacent tube bodies and is provided with a pressure inclined surface 546 on the outer wall; the reset member 544 is in contact between the movable seat 542 and the limit seat 543; the pressure ball 545 is mounted on the movable seat 542 and is spaced apart from the pressure inclined surface 546 and the adjacent The outer tube 200b between the two tube bodies abuts; the driving ring 541 can push the movable seat 542 away from the limiting seat 543 when the first linkage rod 530 rotates forward, so that the pressing ball 545 releases the abutment against the pressing inclined surface 546 and the outer tube 200b between the two adjacent tube bodies, thereby releasing the restriction between the two adjacent tube bodies of the first telescopic leg 200; or, the driving ring 541 can move away from the limiting seat 543 when the first linkage rod 530 rotates reversely, so that the pressing ball 545 abuts against the pressing inclined surface 546 and the outer tube 200b between the two adjacent tube bodies when the reset member 544 pushes the movable seat 542 close to the limiting seat 543, thereby restricting the movement between the two adjacent tube bodies of the first telescopic leg 200.

[0049] The working principle of expansion and contraction is explained using the first telescopic leg 200 as an example. The first telescopic leg 200 includes a first tube body, a second tube body, a third tube body, and a fourth tube body, which are sequentially arranged from the outside to the inside. The first tube body serves as a fixed tube, and the second, third, and fourth tube bodies serve as telescopic tubes. The first and second tube bodies constitute a first-level telescopic joint, the second and third tube bodies constitute a second-level telescopic joint, and the third and fourth tube bodies constitute a third-level telescopic joint. The following explanation takes the first-level telescopic joint as an example, with the first tube body serving as the outer tube 200b and the second tube body serving as the inner tube 200a.

[0050] Specifically, when the first motor 510 receives the unlocking instruction from the unlocking switch 110, it will rotate forward, and drive the first linkage rod 530 to rotate after being transmitted by the first transmission assembly 520, and the driving ring 541 and the first linkage rod 630 realize the conversion between rotational motion and linear motion through the cooperation between the axially arranged ribs and rib grooves, that is, the rotational motion of the first linkage rod 530 is converted into the linear motion of the driving ring 541, thereby causing the driving ring 541 to move toward the movable seat 542 and push the movable seat 542 to move upward (away from the limit seat 543), so that the movable seat 542 drives the pressing ball 545 thereon to move to the lower position of the pressing inclined surface 546 (close to the limit seat 543), thereby releasing the contact between the pressing inclined surface 546 and the outer tube 200b between the two adjacent tube bodies. At this time, the inner tube 200a (the second tube body) can When the first telescopic leg 200 is in the closed position, the inner tube 200a (second tube body) is unable to move axially relative to the outer tube 200b (first tube body), thereby maintaining the extended or retracted state of the first telescopic leg 200.

[0051] 3) Reference Figure 2-Figure 5 In some embodiments, the first transmission assembly 520 includes a worm 521 and a worm wheel 522 , wherein one end of the worm 521 is connected to the output shaft of the first motor 510 , and the worm wheel 522 is connected to the first linkage rod 530 and meshes with the other end of the worm 521 .

[0052] 4) Reference Figure 3 and Figure 5In some embodiments, a through slot 310 is provided on the first telescopic leg 200, one end of the through slot 310 is communicated with the outside, and the first transmission assembly 520 is arranged opposite to the other end of the through slot 310 or at least partially extends into the through slot 310; specifically, the other end of the through slot 310 is arranged opposite to the worm 521, or at least a portion of the worm 521 extends into the through slot 310, and an adjustment slot 320 is provided on the end of the worm 521 close to the through slot 310. The adjustment slot 320 can be a straight adjustment slot, a cross adjustment slot, or a hexagonal adjustment slot, etc. This arrangement can ensure that when the motor fails, the worm 521 can be manually operated with the help of a tool to achieve emergency unlocking; of course, in other embodiments, the worm 521 can also be extended to the outside through the through slot 310, and a knob can be provided on the worm 521, so that emergency unlocking can be achieved without the help of a tool.

[0053] 5) Reference Figure 3 and Figure 5 In some embodiments, the movable seat 542 includes an inner ring 542a and an outer ring 542b, the limiting seat 543 is inserted between the inner ring 542a and the outer ring 542b, the pressing ball 545 is installed on the outer ring 542b, and the reset member 544 is arranged between the inner wall of the limiting seat 543 and the outer wall of the inner ring 542a.

[0054] 6) Reference Figure 3 and Figure 5 In some embodiments, a first limiting ring 810 is provided at the lower end of the inner ring 542a, a second limiting ring 820 is provided at the upper end of the limiting seat 543, and the reset member 544 is abutted between the first limiting ring 810 and the second limiting ring 820; the reset member 544 can be limited without affecting the movement of the movable seat 542. Of course, the inner ring 542a and the outer ring 542b are split structures. During assembly, after assembling the inner ring 542a, the reset member 544 and the limiting seat 543, the outer ring 542b is abutted against the outer side of the limiting seat 543 and assembled with the inner ring 542a as a whole. The assembly method can be bolt connection, gluing, etc.

[0055] 7) Reference Figure 3 and Figure 5 In some embodiments, as a preferred embodiment of the reset member 544, the reset member 544 is configured as a spring.

[0056] 8) Reference Figure 1 、 Figure 2 and Figure 4In some embodiments, an electrically controlled unlocking photography stand further includes a side handle 900 mounted on the three-cutting base 100 and a battery 910 mounted on the side handle 900. The unlocking switch 110 is provided on the side handle 900. The battery 910 is electrically connected to the first electric drive unlocking mechanism 500, the second electric drive unlocking mechanism 600, the third electric drive unlocking mechanism 700, and the unlocking switch 110. The battery 910 is used to power the first electric drive unlocking mechanism 500, the second electric drive unlocking mechanism 600, and the third electric drive unlocking mechanism 700. Of course, power can also be supplied by an external power supply, such as connecting a power bank.

[0057] 9) In some embodiments, the battery 910 is connected to the first electric drive unlocking mechanism 500, the second electric drive unlocking mechanism 600, and the third electric drive unlocking mechanism 700 via a wired connection; in other embodiments, the three-way cutter base 100 is provided with a first conductive portion electrically connected to the first electric drive unlocking mechanism 500, the second electric drive unlocking mechanism 600, and the third electric drive unlocking mechanism 700, and the side handle 900 is provided with a second conductive portion electrically connected to the battery 910 and the unlocking switch 110. The first conductive portion can be electrically contacted with the second conductive portion when the side handle 900 is installed on the three-way cutter base 100.

[0058] 10) Reference Figures 1-6 The present invention further provides an electrically controlled unlocking control circuit for a photographic stand, comprising an unlocking switch 110, a first time relay 930, a second time relay 940, a first motor 510, a second motor 610, and a third motor 710. It should be noted that the structures of the second electrically driven unlocking mechanism 600 and the third electrically driven unlocking mechanism 700 are consistent with those of the first electrically driven unlocking mechanism 500, i.e., the second electrically driven unlocking mechanism 600 includes a second motor 610, and the third electrically driven unlocking mechanism 700 includes a third motor 710.

[0059] The unlocking switch 110 has a first connection terminal to an eighth connection terminal, the first connection terminal is connected to the positive electrode of the power supply and the sixth connection terminal, and the second connection terminal is connected to the negative electrode of the power supply and the fifth connection terminal;

[0060] One end of the coil of the first time relay 930 is connected to the third connection end, the other end of the coil of the first time relay 930 is connected to one end of the first motor 510, one end of the second motor 610, one end of the third motor 710, and one end of the normally closed contact of the second time relay 940, one end of the normally closed contact of the first time relay 930 is respectively connected to the other end of the first motor 510, the other end of the second motor 610, the other end of the third motor 710, and one end of the coil of the second time relay 940, and the other end of the normally closed contact of the first time relay 930 is connected to the seventh connection end;

[0061] The other end of the coil of the second time relay 940 is connected to the fourth connection end, and the other end of the normally closed contact of the second time relay 940 is connected to the eighth connection end.

[0062] Specifically, when the unlocking switch 110 sends an unlocking instruction (i.e., it is in the first state), the first connection terminal and the fourth connection terminal will be connected, as well as the fifth connection terminal and the eighth connection terminal will be connected, and the direction of the circuit is: the positive pole of the power supply--the first connection terminal--the fourth connection terminal--the coil of the second time relay 940--the other end of the first motor 510, the other end of the second motor 610, the other end of the third motor 710--one end of the first motor 510, one end of the second motor 610, one end of the third motor 710--the normally closed contact of the second time relay 940--the eighth connection terminal--the fifth connection terminal--the negative pole of the power supply, thereby forming a cycle to drive the first motor 510, the second motor 610 and the third motor 710 to rotate forward. When the unlocking switch 110 sends a locking command (i.e., it is in the second state), the second connection terminal and the third connection terminal are connected, as well as the sixth connection terminal and the seventh connection terminal are connected. The circuit direction is: the positive pole of the power supply - the sixth connection terminal - the seventh connection terminal - the normally closed contact of the first time relay 930 - the other end of the first motor 510, the other end of the second motor 610, the other end of the third motor 710 - one end of the first motor 510, one end of the second motor 610, one end of the third motor 710 - the coil of the first time relay 930 - the third connection terminal - the second connection terminal - the negative pole of the power supply, thereby forming a cycle to drive the first motor 510, the second motor 610, and the third motor 710 to rotate in the opposite direction.

[0063] 11) In some embodiments, a battery 910 is further included to constitute a power source. As a first embodiment of the battery 910, the battery 910 is configured as a dry cell battery. As a second embodiment of the battery 910, the battery 910 is configured as a rechargeable battery.

[0064] 12) The advantage of the present invention is that the above structure can realize one-touch electric unlocking of the three telescopic legs, which greatly improves the convenience of operation when unfolding and folding the photographic stand and meets the use requirements.

[0065] Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. An electrically unlockable photographic stand comprising a three-way cutter base (100) and a first telescopic leg (200), a second telescopic leg (300) and a third telescopic leg (400) operably connected to the three-way cutter base (100), characterized in that: It also includes a first electrically driven unlocking mechanism (500), a second electrically driven unlocking mechanism (600), a third electrically driven unlocking mechanism (700), and an unlocking switch (110); The first electric drive unlocking mechanism (500) is installed on the first telescopic leg (200), the second electric drive unlocking mechanism (600) is installed on the second telescopic leg (300), and the third electric drive unlocking mechanism (700) is installed on the third telescopic leg (400), and is used to control the first telescopic leg (200), the second telescopic leg (300), and the third telescopic leg (400) to enter an unlocked state and unfold, or to control the first telescopic leg (200), the second telescopic leg (300), and the third telescopic leg (400) to enter a locked state to maintain an unfolded or folded state; The unlocking switch (110) is arranged on the three-cut seat (100) and is electrically connected to the first electric drive unlocking mechanism (500), the second electric drive unlocking mechanism (600) and the third electric drive unlocking mechanism (700).

2. The electronically unlocked photographic stand according to claim 1, characterized in that: The first electrically driven unlocking mechanism (500) comprises a first motor (510), a first transmission assembly (520), a first linkage rod (530), and a plurality of unlocking assemblies (540); The first motor (510) is mounted on the first telescopic leg (200); The first transmission assembly (520) is connected to the output shaft of the first motor (510); The first linkage rod (530) is connected to the first transmission assembly (520); The unlocking and locking assembly (540) is connected between two adjacent tube bodies of the first telescopic leg (200) and is connected to the first linkage rod (530); The first motor (510) can drive the unlocking assembly (540) to release the restriction between two adjacent tubes of the first telescopic leg (200) when rotating in the forward direction, or drive the unlocking assembly (540) to restrict the movement between two adjacent tubes of the first telescopic leg (200) when rotating in the reverse direction.

3. The electronically unlocked photographic stand according to claim 2, characterized in that: The first transmission assembly (520) comprises a worm (521) and a worm wheel (522), one end of the worm (521) is connected to the output shaft of the first motor (510), and the worm wheel (522) is connected to the first linkage rod (530) and meshes with the other end of the worm (521).

4. The electronically unlocked photographic stand according to claim 2, characterized in that: A through slot (310) is provided on the first telescopic leg (200), one end of the through slot (310) is in communication with the outside, and the first transmission assembly (520) is arranged opposite to the other end of the through slot (310) or at least partially extends into the through slot (310).

5. The electronically unlocked photographic stand according to claim 2, characterized in that: The unlocking lock assembly (540) includes a driving ring (541), a movable seat (542), a limiting seat (543), a reset member (544), and a plurality of pressing balls (545); The drive ring (541) is mounted on the first linkage rod (530) and is used for axial movement relative to the first linkage rod (530) when the first linkage rod (530) rotates; The movable seat (542) is mounted on the first linkage rod (530) and has a distance between it and the driving ring (541); The limiting seat (543) is connected to the inner tube (200a) between two adjacent tube bodies and has a pressing inclined surface (546) provided on its outer wall; The reset member (544) abuts between the movable seat (542) and the limiting seat (543); The pressing ball (545) is mounted on the movable seat (542) and contacts the pressing inclined surface (546) and the outer tube (200b) between two adjacent tube bodies; The driving ring (541) can push the movable seat (542) away from the limiting seat (543) when the first linkage rod (530) rotates in the forward direction, so that the pressing ball (545) releases the contact with the pressing inclined surface (546) and the outer tube (200b) between the two adjacent tube bodies, thereby releasing the restriction between the two adjacent tube bodies of the first telescopic leg (200); or, the driving ring (541) can move away from the limiting seat (543) when the first linkage rod (530) rotates in the reverse direction, so that the pressing ball (545) contacts the pressing inclined surface (546) and the outer tube (200b) between the two adjacent tube bodies when the reset member (544) pushes the movable seat (542) close to the limiting seat (543), thereby limiting the movement between the two adjacent tube bodies of the first telescopic leg (200).

6. The electronically unlocked photographic stand according to claim 5, characterized in that: The movable seat (542) includes an inner ring (542a) and an outer ring (542b), the limiting seat (543) is inserted between the inner ring (542a) and the outer ring (542b), the pressing ball (545) is installed on the outer ring (542b), and the reset member (544) is arranged between the inner wall of the limiting seat (543) and the outer wall of the inner ring (542a).

7. The electronically unlockable photographic stand according to claim 6, characterized in that: A first limiting ring (810) is provided at the lower end of the inner ring (542a), a second limiting ring (820) is provided at the upper end of the limiting seat (543), and the reset member (544) abuts between the first limiting ring (810) and the second limiting ring (820).

8. The electronically unlocked photographic stand according to claim 5, characterized in that: The reset member (544) is configured as a spring.

9. The electronically unlockable photographic stand according to claim 1, characterized in that: The invention also includes a side handle (900) mounted on the three-cutting seat (100) and a battery (910) mounted on the side handle (900), the unlocking switch (110) is arranged on the side handle (900), and the battery (910) is electrically connected to the first electric drive unlocking mechanism (500), the second electric drive unlocking mechanism (600), the third electric drive unlocking mechanism (700) and the unlocking switch (110).

10. The electronically unlocked photographic stand according to claim 9, characterized in that: The three-cut seat (100) is provided with a first conductive portion electrically connected to the first electric drive unlocking mechanism (500), the second electric drive unlocking mechanism (600) and the third electric drive unlocking mechanism (700), and the side handle (900) is provided with a second conductive portion electrically connected to the battery (910) and the unlocking switch (110), and the first conductive portion can be electrically contacted with the second conductive portion when the side handle (900) is installed on the three-cut seat (100).

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