Small ultra-light electric multi-section synchronous telescopic photographing and video recording rocker arm

Abstract

The invention relates to the technical field of photography and video recording auxiliary supporting equipment, and discloses a small ultra-light electric multi-section synchronous telescopic photography and video recording rocker arm which comprises a telescopic arm main arm, a first section of telescopic arm, a second section of telescopic arm, a motor power rear box and a camera bearing head frame. Guide rails are integrally formed on the corresponding inner and outer walls of each telescopic arm in the length direction; a motor and a main synchronous belt wheel are installed in the motor power rear box, a driven wheel shaft is installed at the top end of the telescopic arm main arm, a linkage transmission synchronous belt is arranged on the main synchronous belt wheel and the driven wheel shaft in a sleeving mode and driven by the motor to rotate, and the linkage transmission synchronous belt drives the first telescopic arm to stretch out and draw back. And the lower side of the arm pipe is provided with a linkage rope for driving the first-section telescopic arm and the second-section telescopic arm to synchronously stretch out and draw back. The telescopic electric rocker arm can meet the requirements of light weight, small size, portability and low cost, and meets the requirements of vast small and medium-sized film and television manufacturers on the telescopic electric rocker arm.

Description

Technical Field

[0001] The invention relates to the technical field of auxiliary supporting equipment for photography and videography, and more particularly to a small, ultra-portable, electric, multi-section, synchronously retractable photography and videography rocker arm. Background Art

[0002] The camera jib is an irreplaceable auxiliary device for shooting motion shots in modern film, television, and short and long video productions. It has become an indispensable and common auxiliary equipment for modern film and television production. With the continuous development of science and technology and the ever-increasing requirements of film and television production, the original fixed-length camera jib can no longer meet the needs of film and television production, which requires more diversity and flexibility. Therefore, the electric telescopic camera jib with adjustable length has begun to be favored and adopted by more and more film and television creators.

[0003] However, most of the existing electric telescopic jibs for photography and videography are imported. Not only are they priced at hundreds of thousands or even millions of yuan, but they are also very large in size, weighing hundreds to thousands of kilograms. Not only do they require special trucks with special hydraulic tailgates for transportation, but their adjustment and use also require the collaboration of multiple people. They are heavy, large, and very expensive high-end photography auxiliary equipment. Only large film and television crews and high-budget production programs can afford them, and they are far from meeting the needs of the vast majority of small and medium-sized film and television producers for telescopic electric jibs.

[0004] Therefore, at this stage, it is necessary to invent a miniaturized, retractable, lightweight and portable professional photography and videography electric telescopic rocker arm with the characteristics of light weight, small size, portability and low cost to fill the gap of such products on the market. Summary of the Invention

[0005] In view of this, the present invention proposes a small, ultra-light electric multi-section synchronously retractable photography and video rocker arm, the specific technical solution of which is as follows:

[0006] A small, ultra-light, electric, multi-section synchronously retractable photographic and video rocker arm comprises a telescopic arm main arm, a first telescopic arm embedded in and slidably mounted in the telescopic arm main arm, a second telescopic arm embedded in and slidably mounted in the first telescopic arm, a motor-powered rear trunk connected to the tail end of the telescopic arm main arm, and an angle-adjustable camera support head frame connected to the head of the second telescopic arm; guide rails are integrally formed along the length direction on the upper and lower inner walls of the telescopic arm main arm, the upper and lower outer walls and upper and lower inner walls of the first telescopic arm, and the upper and lower outer walls of the second telescopic arm; pulley mechanisms matching the corresponding guide rails are installed on the telescopic arm main arm, the first telescopic arm, and the second telescopic arm; a motor is installed in the motor-powered rear trunk, and a rotary shaft driven by the motor is provided. The main synchronous pulley is driven by the main arm of the telescopic arm, and an installation opening for installing the driven wheel shaft is opened at the front side of the top end of the main arm of the telescopic arm. A linkage transmission synchronous belt is mounted on the main synchronous pulley and the driven wheel shaft, and is driven by the motor to rotate; the upper belt body in the linkage transmission synchronous belt is located outside the upper outer wall of the main arm of the telescopic arm, and the lower belt body in the linkage transmission synchronous belt is located between the upper inner wall of the main arm of the telescopic arm and the upper outer wall of the first section of the telescopic arm, and the lower belt body is fixedly connected to the tail end of the upper outer wall of the first section of the telescopic arm; linkage ropes that drive the first section of the telescopic arm and the second section of the telescopic arm to synchronously extend and retract are installed on the lower outer wall of the main arm of the telescopic arm, between the lower inner wall of the main arm of the telescopic arm and the lower outer wall of the first section of the telescopic arm, and between the lower inner wall of the first section of the telescopic arm and the lower outer wall of the second section of the telescopic arm.

[0007] Preferably, the front end of the telescopic arm main arm is respectively installed with the front upper supporting pulley group of the first section telescopic arm and the front lower supporting pulley group of the first section telescopic arm, and the front upper supporting pulley group of the first section telescopic arm and the front lower supporting pulley group of the first section telescopic arm are respectively adapted to be embedded on the upper and lower outer wall guide rails of the first section telescopic arm; the rear tail end of the first section telescopic arm is respectively installed with the rear upper pulley group of the first section telescopic arm and the rear lower pulley group of the first section telescopic arm, and the rear upper pulley group of the first section telescopic arm and the rear lower pulley group of the first section telescopic arm are respectively adapted to be embedded on the upper and lower inner wall guide rails of the telescopic arm main arm. ; The front end of the first telescopic arm is respectively installed with the front upper supporting pulley group of the second telescopic arm and the front lower supporting pulley group of the second telescopic arm, and the front upper supporting pulley group of the second telescopic arm and the front lower supporting pulley group of the second telescopic arm are respectively adapted to be embedded in the upper and lower outer wall guide rails of the second telescopic arm; the rear tail end of the second telescopic arm is respectively installed with the rear upper pulley group of the second telescopic arm and the rear lower pulley group of the second telescopic arm, and the rear upper pulley group of the second telescopic arm and the rear lower pulley group of the second telescopic arm are respectively adapted to be embedded in the upper and lower inner wall guide rails of the first telescopic arm.

[0008] Preferably, the rollers in the front lower supporting pulley group of the first telescopic arm and the front lower supporting pulley group of the second telescopic arm are fixed on the eccentric shaft seats on the corresponding telescopic arms through corresponding eccentric shaft assemblies, so that the gap between the rollers of the pulley group and the corresponding guide rails can be adjusted.

[0009] Preferably, a counterweight linear slide is installed at the top of the main arm of the telescopic arm along the length direction, and a counterweight pulley is slidably installed on the counterweight linear slide, and a dynamic balancing counterweight is detachably installed on the counterweight pulley; the counterweight pulley is fixedly connected to the upper belt body in the linkage transmission synchronous belt.

[0010] Preferably, the linkage transmission synchronous belt is an open synchronous belt, and both ends of the open synchronous belt are respectively connected to both sides of the counterweight pulley.

[0011] Preferably, an adjustable rope fixing seat is installed on the outer bottom surface of the telescopic arm main arm, and a mounting hole two for installing the telescopic arm main arm guide fixed pulley is opened at the lower end of the telescopic arm main arm located in front of the adjustable rope fixing seat, the first telescopic arm tail end guide fixed pulley is installed on the outer side of the tail end of the first telescopic arm, and a linkage fixing block is installed on the lower wall near the tail end of the second telescopic arm, the first telescopic arm front end guide fixed pulley is installed on the inner lower wall near the front side of the first telescopic arm, and the telescopic arm main arm tail end rope fixing seat is installed on the inner lower wall near the tail end; the linkage rope includes a first linkage rope and a second linkage rope, and one end of the first linkage rope is connected to the adjustable rope fixing seat The fixed seat is fixed, and the other end first passes through the guide fixed pulley of the telescopic arm main arm forward, and then passes through the guide fixed pulley at the tail end of the first telescopic arm backward, and is finally connected to the linkage fixed block; one end of the second linkage rope is connected to the linkage fixed block, and the other end passes through the guide fixed pulley at the front end of the first telescopic arm, and is finally connected to the rope fixing seat at the tail end of the telescopic arm main arm. The first linkage rope and the second linkage rope are directly connected as a whole at the linkage fixed block; while the linkage transmission synchronous belt drives the first telescopic arm to contract, the first linkage rope drives the second telescopic arm to contract synchronously; while the linkage transmission synchronous belt drives the first telescopic arm to extend, the second linkage rope drives the second telescopic arm to extend synchronously.

[0012] Preferably, long armrests with adjustable angles are installed on the left and right sides of the main arm of the telescopic arm along the length direction, and both the long armrests with adjustable angles and the adjustable angle camera supporting head frame adopt a built-in gear toothed disc structure to achieve angle adjustment.

[0013] Preferably, the output shaft end of the motor drives the main synchronous pulley to rotate through the driving synchronous belt, and a guide fixed pulley shaft for supporting and guiding the linkage transmission synchronous belt is also installed in the tail end of the main arm of the telescopic arm.

[0014] Preferably, a synchronous belt fixing block for fixing the lower belt body of the linkage transmission synchronous belt is installed on the upper outer wall of the first telescopic arm.

[0015] Preferably, a touch screen for human-computer interaction is also installed on the motor-powered tail box. The motor is controlled by a main control box installed at the bottom of the telescopic arm main arm. The main control box is equipped with a control handle for controlling the motor movement, and a V-mount battery is connected to the main control box.

[0016] Compared with the prior art, the small, ultra-light electric multi-section synchronously retractable photography and video rocker arm of the present invention has the following beneficial effects:

[0017] 1. The present invention adopts the method of integrating the guide rail and the arm tube into a mold, which avoids the post-assembly process, improves the precision and production efficiency, and greatly reduces the weight and cost of the arm assembly.

[0018] 2. The present invention places the linkage rope on the lower side of the arm tube, which greatly reduces the left and right arm body drop between the multi-section telescopic nested arm tubes, and better realizes the lightweight and miniaturization of the arm body.

[0019] 3. The present invention uses a unique single rope to complete the synchronous contraction and extension of the multi-section nested arm body, which not only reduces the use of synchronous ropes, but also allows for better contraction and extension synchronization of the single rope without leaving any gaps. The user only needs to adjust the length of one rope for self-maintenance adjustments in the later stage, making the operation simpler. The linkage design of the single rope in the present invention also facilitates the placement of the rope in the space below the multi-section nested arm tube, greatly reducing the left and right arm body drop between the multi-section telescopic nested arm tubes, that is, the left and right gap drop of the multi-section nested arm tube can be controlled to be smaller, so that the size of the arm tube is designed to be more compact on the basis of ensuring nested sliding, and the arm tube volume can also be designed to be smaller, which better realizes the lightweight and miniaturization of the arm body, and realizes a smaller and lighter multi-section synchronous telescopic nested structure.

[0020] 4. The present invention adds an eccentric shaft seat design to the corresponding front lower supporting pulley group at the front end of the telescopic arm, so that the front lower supporting wheel can not only automatically adjust the deflection and have better contact with the guide rail, but the eccentric design of the eccentric shaft seat also allows a certain range of adjustment over the entire height, so that the double supporting wheels fit better with the track, move more smoothly, have less friction loss, and are easier to maintain later.

[0021] 5. The present invention utilizes an adjustable armrest design, eliminating the need to remove the long armrests. The long armrests on either side can be adjusted and extended when needed, and instantly converted into carry handles when not needed, making it more convenient for users to use, transfer, and store. The present invention also utilizes a unique adjustable angle design for the camera head support, allowing for the attachment of various accessories to expand shooting options. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0023] Figure 1 The present invention is a schematic diagram of the external structure of a small, ultra-light electric multi-section synchronously retractable photographic and video camera rocker arm.

[0024] Figure 2 The present invention provides a schematic diagram of the connection of internal linkage ropes of a small, ultra-light electric multi-section synchronously retractable photographic and video rocker arm.

[0025] Figure 3 The present invention is a partial structural view of a small, ultra-light electric multi-section synchronously retractable photographic and video camera rocker arm.

[0026] Figure 4 for Figure 3 An enlarged schematic diagram of the cross-section of the front lower support pulley assembly of the first telescopic arm on the front side.

[0027] Figure 5 It is a structural schematic diagram of the first section of the telescopic arm in the present invention.

[0028] In the figure: 1- telescopic arm main arm, 2- first section telescopic arm, 3- second section telescopic arm, 4- motor powered rear trunk, 5- camera support head frame, 6- guide rail, 7- motor, 8- main synchronous pulley, 9- driven wheel shaft, 10- linkage transmission synchronous belt, 11- front upper support pulley group of the first section telescopic arm, 12- front lower support pulley group of the first section telescopic arm, 13- rear upper pulley group of the first section telescopic arm, 14- rear lower pulley group of the first section telescopic arm, 15- front upper support pulley group of the second section telescopic arm, 16- front lower support pulley group of the second section telescopic arm, 17- rear upper pulley group of the second section telescopic arm, 18- rear lower pulley group of the second section telescopic arm, 19- eccentric shaft assembly , 20-eccentric shaft seat, 21-counterweight linear slide, 22-counterweight pulley, 23-dynamic balancing counterweight, 24-adjustable rope fixing seat, 25-telescopic arm main arm guide fixed pulley, 26-first section telescopic arm tail end guide fixed pulley, 27-linkage fixing block, 28-first section telescopic arm front end guide fixed pulley, 29-telescopic arm main arm tail end rope fixing seat, 30-first linkage rope, 31-second linkage rope, 32-drive synchronous belt, 33-guide fixed pulley shaft, 34-synchronous belt fixing block, 35-adjustable angle long armrest, 36-touch screen, 37-main control box, 38-control handle, 39-V port battery, 40-linkage synchronous belt driven wheel box. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0032] Example:

[0033] This embodiment provides a small, ultra-light electric multi-section synchronous retractable photography and video rocker arm, which can meet the requirements of light weight, small size, portability and low cost, and meet the needs of a large number of small and medium-sized film and television producers for a retractable electric rocker arm.

[0034] Specifically, the small, ultra-light, electric, multi-section, synchronously retractable photographic and video rocker arm in this embodiment includes a telescopic arm main arm 1, a first-section telescopic arm 2 embedded in and slidably installed in the telescopic arm main arm 1, a second-section telescopic arm 3 embedded in and slidably installed in the first-section telescopic arm 2, a motor-powered rear trunk 4 connected to the tail end of the telescopic arm main arm 1, and a camera supporting head frame 5 connected to the head of the second-section telescopic arm 3, thereby forming a main structure for sliding and retracting three-section, two-section telescopic arm bodies.

[0035] The upper and lower inner walls of the telescopic arm main arm 1, the upper and lower outer walls and upper and lower inner walls of the first section telescopic arm 2, and the upper and lower outer walls of the second section telescopic arm 3 are all integrally formed with guide rails 6 along the length direction, and the telescopic arm main arm 1, the first section telescopic arm 2 and the second section telescopic arm 3 are installed with pulley mechanisms matching the corresponding guide rails 6.

[0036] The guide rail 6 in this embodiment is preferably a triangular guide rail, specifically, the inner and outer upper and lower triangular guide rails are integrally formed with the corresponding arm body.

[0037] Previously, all electric telescopic rocker arm designs, both domestically and internationally, employed guide rails embedded in the arm tube, both vertically and externally. This post-installation approach is not only costly and heavy, but also requires stringent assembly procedures, making it unsuitable for low-cost, high-efficiency mass production. This embodiment utilizes an integrated molded triangular guide rail integrated with the arm tube, eliminating the need for post-assembly, improving precision and production efficiency while significantly reducing the weight and cost of the arm assembly.

[0038] A motor 7 and a main synchronous pulley 8 driven by the motor 7 are installed in the motor-powered tail box 4. A mounting opening for installing a driven wheel shaft 9 is opened at the front side of the top of the telescopic arm main arm 1 (the outer cover of the driven wheel shaft 9 in this embodiment is provided with a linkage synchronous belt driven wheel box 40), and a linkage transmission synchronous belt 10 is mounted on the main synchronous pulley 8 and the driven wheel shaft 9, and is driven to rotate by the motor 7; the upper belt body in the linkage transmission synchronous belt 10 is located outside the upper outer wall of the telescopic arm main arm 1, and the lower belt body in the linkage transmission synchronous belt 10 is located between the upper inner wall of the telescopic arm main arm 1 and the upper outer wall of the first section telescopic arm 2, and the lower belt body is fixedly connected to the tail end of the upper outer wall of the first section telescopic arm 2.

[0039] Linkage ropes for driving the first telescopic arm 2 and the second telescopic arm 3 to extend and retract synchronously are installed on the lower outer wall of the telescopic arm main arm, between the lower inner wall of the telescopic arm main arm and the lower outer wall of the first telescopic arm, and between the lower inner wall of the first telescopic arm and the lower outer wall of the second telescopic arm.

[0040] In a further specific embodiment, the front end of the telescopic arm main arm 1 is respectively installed with the first section telescopic arm front upper supporting pulley group 11 and the first section telescopic arm front lower supporting pulley group 12, and the first section telescopic arm front upper supporting pulley group 11 and the first section telescopic arm front lower supporting pulley group 12 are respectively adapted to be embedded in the upper and lower outer wall guide rails of the first section telescopic arm; the rear tail end of the first section telescopic arm 2 is respectively installed with the first section telescopic arm rear tail upper pulley group 13 and the first section telescopic arm rear tail lower pulley group 14, and the first section telescopic arm rear tail upper pulley group 13 and the first section telescopic arm rear tail lower pulley group 14 are respectively adapted to be embedded in the upper and lower inner wall guide rails of the telescopic arm. On the wall guide rails; the front end of the first telescopic arm 2 is respectively installed with the second telescopic arm front upper supporting pulley group 15 and the second telescopic arm front lower supporting pulley group 16, and the second telescopic arm front upper supporting pulley group 15 and the second telescopic arm front lower supporting pulley group 16 are respectively adapted to be embedded in the upper and lower outer wall guide rails of the second telescopic arm; the rear tail end of the second telescopic arm 3 is respectively installed with the second telescopic arm rear tail upper pulley group 17 and the second telescopic arm rear tail lower pulley group 18, and the second telescopic arm rear tail upper pulley group 17 and the second telescopic arm rear tail lower pulley group 18 are respectively adapted to be embedded in the upper and lower inner wall guide rails of the first telescopic arm.

[0041] At the same time, the rollers in the front lower supporting pulley group 12 of the first telescopic arm and the front lower supporting pulley group 16 of the second telescopic arm are fixed to the eccentric shaft seat 20 on the corresponding telescopic arm through the corresponding eccentric shaft assembly 19, so that the gap between the rollers of the pulley group and the corresponding guide rail 6 can be adjusted.

[0042] Most common small-scale electric telescopic rocker arms adopt a single support wheel design, while dual support wheels are generally only used on large and heavy-duty telescopic rocker arms, and all of them are not height-adjustable. This embodiment adopts a dual-wheel deflectable design on a small telescopic arm for the first time, and adds a unique eccentric shaft seat design. This allows the front lower support wheel to not only automatically adjust the deflection, but also better fit and contact with the guide rail. The eccentric design of the eccentric shaft seat also allows a certain range of adjustment across the entire height (i.e., the distance between the roller and the guide rail can be well adjusted, solving the clearance fit problem between the roller and the guide rail). This makes the dual support wheels fit more closely to the track, moves more smoothly, has less friction loss, and is easier to maintain later.

[0043] In a further specific embodiment, a counterweight linear slide 21 is installed at the top of the telescopic arm main arm 1 along the length direction, and a counterweight pulley 22 is slidably installed on the counterweight linear slide 21, and a dynamic balancing counterweight 23 is detachably installed on the counterweight pulley 22; the counterweight pulley 22 is fixedly connected to the upper belt body in the linkage transmission synchronous belt 10; the linkage transmission synchronous belt 10 rotates, causing the counterweight pulley 22 and the first section of the telescopic arm 2 to perform synchronous reverse movement.

[0044] The linkage transmission synchronous belt 10 in this embodiment is an open synchronous belt, and both ends of the open synchronous belt are respectively connected to both sides of the counterweight pulley 22.

[0045] In a further specific embodiment, an adjustable rope fixing seat 24 is installed on the outer bottom surface of the telescopic arm main arm 1, and an installation opening 2 for installing the telescopic arm main arm guide fixed pulley 25 is opened at the lower end of the telescopic arm main arm located in front of the adjustable rope fixing seat 24. The first section telescopic arm tail end guide fixed pulley 26 is installed on the outer side of the tail end of the first section telescopic arm 2, and a linkage fixing block 27 is installed on the lower wall near the tail end of the second section telescopic arm 3. The first section telescopic arm front end guide fixed pulley 28 is installed on the inner lower wall near the front side of the first section telescopic arm 2, and the telescopic arm main arm tail end rope fixing seat 29 is installed on the inner lower wall near the tail end of the telescopic arm main arm 1.

[0046] The linkage rope includes a first linkage rope 30 and a second linkage rope 31. One end of the first linkage rope 30 is fixed to the adjustable rope fixing seat 24, and the other end first passes through the guide fixed pulley 25 of the telescopic arm main arm forward, and then passes through the guide fixed pulley 26 at the tail end of the first section telescopic arm backward, and is finally connected to the linkage fixing block 27 on the second section telescopic arm 3; one end of the second linkage rope 31 is connected to the linkage fixing block 27 on the second section telescopic arm 3, and the other end passes through the guide fixed pulley 28 at the front end of the first section telescopic arm, and is finally connected to the rope fixing seat 29 at the tail end of the telescopic arm main arm.

[0047] While the linkage transmission synchronous belt 10 drives the first telescopic arm 2 to retract, the first linkage rope 30 drives the second telescopic arm 3 to retract synchronously. Specifically, when the first telescopic arm 2 retracts, it will drive the first telescopic arm tail end guide fixed pulley 26 on it to move backward synchronously. At this time, the lower side section of the first linkage rope 30 needs to be lengthened, which causes the upper side section of the first linkage rope 30 to be shortened accordingly, that is, the length of the first linkage rope 30 between the first telescopic arm tail end guide fixed pulley 26 and the linkage fixed block 27 becomes shorter, thereby causing the second telescopic arm 3 to retract synchronously with the first linkage rope 30.

[0048] While the linkage transmission timing belt 10 drives the first telescopic boom 2 to extend, the second linkage rope 31 also drives the second telescopic boom 3 to extend synchronously. Specifically, as the first telescopic boom 2 extends, it also drives the fixed pulley 28 at the front end of the first telescopic boom on it to move forward synchronously. At this time, the lower section of the second linkage rope 31 needs to be extended, which in turn causes the upper section of the second linkage rope 31 to shorten accordingly. In other words, the length of the second linkage rope 31 between the fixed pulley 28 at the front end of the first telescopic boom and the linkage fixed block 27 is shortened, thereby causing the second telescopic boom 3 to extend synchronously with the first linkage rope 30.

[0049] In this embodiment, the first linkage rope 30 and the second linkage rope 31 are directly connected at the linkage fixing block 27, thereby realizing that a single rope can complete the connection, contraction and extension between the multiple nested arms.

[0050] Currently, all multi-section nested linkages for electric telescopic booms utilize a dual-side, multi-linked rope design, with one side retracting and the other extending. This embodiment, however, utilizes a unique single rope to achieve the synchronized retraction and extension of the multi-section nested boom. This not only reduces the number of synchronized ropes, but also allows for better synchronization of retraction and extension, eliminating gaps. Later maintenance adjustments by the user only require adjusting the length of a single rope, making operation much simpler.

[0051] The linkage design of the single rope in this embodiment also makes it convenient to place the rope in the space below the multi-section nested arm tube, greatly reducing the left and right arm body drop between the multi-section telescopic nested arm tube, that is, the left and right gap drop of the multi-section nested arm tube can be controlled to be smaller, so that the size of the arm tube is designed to be more compact on the basis of ensuring nested sliding, and the volume of the arm tube can also be designed to be smaller, which better realizes the lightweight and miniaturization of the arm body and realizes a smaller and lighter multi-section synchronous telescopic nested structure.

[0052] In a further specific embodiment, long armrests 35 with adjustable angles are installed on the left and right sides of the telescopic arm main arm 1 along the length direction. The long armrests 35 with adjustable angles and the camera supporting head frame 5 both adopt a built-in gear toothed disc structure to achieve angle adjustment.

[0053] The specific scheme of the built-in gear disc structure in this embodiment can refer to the corresponding angle adjustable structures disclosed in CN108897184A-An angle-adjustable fill light and angle adjustment method, and CN2703945Y-A parasol canopy angle adjustment device, and a detailed structural description will not be given here.

[0054] Generally, electric telescopic rocker arms require installation and removal of handles on both sides. They are installed when in use and removed again when transferred or stored. This embodiment adopts an angle-adjustable armrest design so that there is no need to remove the long armrests at any time. The long armrests on both sides can be adjusted to expand when needed, and can be turned into handles immediately after adjusting the angle when not needed, which makes it more convenient for users to use, transfer and store quickly.

[0055] At the same time, the camera support head frame 5 also adopts a unique design with adjustable angle, so that accessories with different functions can be installed on its front end to expand more shooting methods.

[0056] In a further specific embodiment, the output shaft end of the motor 7 drives the main synchronous pulley 8 to rotate by driving the synchronous belt 32, and a guide fixed pulley shaft 33 is also installed in the tail end of the telescopic arm main arm 1 to support and guide the linkage transmission synchronous belt 10.

[0057] A synchronous belt fixing block 34 for fixing the lower belt body of the linkage transmission synchronous belt 10 is installed on the upper outer wall of the first telescopic arm 2 .

[0058] At the same time, a touch screen 36 for human-computer interaction is installed on the motor-powered tail box 4. The motor 7 is controlled by a main control box 37 installed at the bottom of the telescopic arm main arm. The main control box 37 is equipped with a control handle 38 for controlling the movement of the motor 7. The main control box 37 is connected to a V-mount battery 39.

[0059] The control handle 38 mentioned above is a wired control handle, and the V-mount battery 39 is a V-mount universal power battery specially used for broadcasting and television.

[0060] The power supply of this invention utilizes a universal V-mount camera battery. Considering the specifics of the industry, portability, and ease of use, as well as reducing the need for expensive dedicated power supplies, this invention utilizes unique energy-efficient power management and DC-DC boost processing, enabling the entire electric telescopic arm to be powered directly by universal V-mount camera batteries, a technology widely used in the film and television industry. This eliminates the need for a separate external power supply or the purchase of a bulky, dedicated power supply system.

[0061] The overall working process of this embodiment is as follows:

[0062] The V-mount battery 39 is connected to the main control box 37, and the main control box 37 is controlled by the control handle 38 to drive the motor 7. The output shaft end of the motor 7 drives the main synchronous pulley 8 to rotate through the driving synchronous belt 32, and the main synchronous pulley 8 drives the linkage transmission synchronous belt 10 to rotate. The lower belt body in the linkage transmission synchronous belt 10 drives the first telescopic arm 2 to move, and a single linkage rope enables the first telescopic arm 2 and the second telescopic arm 3 to perform synchronous linkage and telescoping; at the same time, the upper belt body in the linkage transmission synchronous belt 10 drives the counterweight pulley 22 to perform synchronous reverse movement, realizing electric synchronous dynamic balance telescoping to ensure the smooth and safe use of the entire photographic and video rocker arm.

[0063] In this embodiment, a small, ultra-light electric multi-section synchronously retractable photographic and video rocker arm is placed as a whole on a supporting pan-tilt unit that can pitch and rotate horizontally. The lower end of the supporting pan-tilt unit has a clampable European head interface for installation on a tripod or other supporting equipment that can support the retractable arm.

[0064] Furthermore, the lower horizontal turntable interface of the pan / tilt head support can have many interfaces commonly used in the film and television industry, such as the existing European head interface, 100-150mm flat bowl tripod interface and Michel thread interface. As a replaceable design, it includes but is not limited to installation on common support brackets such as columns, tripods, wheeled carts, dolly carts, etc., and can also be installed on other application scenarios such as vehicles or ships, forming various forms such as vehicle-mounted telescopic jibs and ship-mounted telescopic jibs.

[0065] Moreover, the front camera supporting head frame part in this embodiment also has a variety of expandable implementation methods, including but not limited to adding a shock-absorbing plate, a rotary damper or a connecting rod damper, an electronic automatic level head, etc. These expanded applications are also based on the expanded implementation form of the photography and video rocker arm body of the present invention.

[0066] The present invention discloses a small, ultra-light electric multi-section synchronously retractable photographic camera jib, which, while maintaining all the usage characteristics of all professional electric retractable photographic camera jibs, greatly reduces the volume, weight and usage cost, and achieves miniaturization, ultra-lightness, ultra-portability, ultra-practicality and ultra-low cost, providing an excellent and unique solution for popularizing the use of electric retractable photographic camera jibs in the field of film and television creation.

[0067] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0068] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments described herein but is to be construed in the widest possible manner consistent with the principles and novel features disclosed herein.

Claims

1. A small, ultra-light, electric, multi-section, synchronous, retractable photographic and video rocker arm, characterized in that: The telescopic arm comprises a main telescopic arm, a first telescopic arm embedded and slidably installed in the main telescopic arm, a second telescopic arm embedded and slidably installed in the first telescopic arm, a motor-powered rear trunk connected to the tail end of the main telescopic arm, and a camera supporting head frame connected to the head of the second telescopic arm; the upper and lower inner walls of the main telescopic arm, the upper and lower outer walls and the upper and lower inner walls of the first telescopic arm, and the upper and lower outer walls of the second telescopic arm are all integrally formed with guide rails along the length direction, and the main telescopic arm, the first telescopic arm and the second telescopic arm are equipped with pulley mechanisms matching the corresponding guide rails; the motor-powered rear trunk is equipped with a motor and a main synchronous pulley driven by the motor, and the main telescopic arm A mounting opening for mounting a driven wheel shaft is opened at the front side of the top, and a linkage transmission synchronous belt is mounted on the main synchronous pulley and the driven wheel shaft, and is driven to rotate by a motor; the upper belt body in the linkage transmission synchronous belt is located outside the upper outer wall of the telescopic arm main arm, and the lower belt body in the linkage transmission synchronous belt is located between the upper inner wall of the telescopic arm main arm and the upper outer wall of the first section telescopic arm, and the lower belt body is fixedly connected to the tail end of the upper outer wall of the first section telescopic arm; linkage ropes that drive the first section telescopic arm and the second section telescopic arm to synchronously extend and retract are installed on the lower outer wall of the telescopic arm main arm, between the lower inner wall of the telescopic arm main arm and the lower outer wall of the first section telescopic arm, and between the lower inner wall of the first section telescopic arm and the lower outer wall of the second section telescopic arm.

2. The small, ultra-light electric multi-section synchronously retractable photography and video rocker arm according to claim 1, characterized in that: The front end of the telescopic arm main arm is respectively installed with the upper front supporting pulley group of the first section telescopic arm and the lower front supporting pulley group of the first section telescopic arm, and the upper front supporting pulley group of the first section telescopic arm and the lower front supporting pulley group of the first section telescopic arm are respectively adapted to be embedded on the upper and lower outer wall guide rails of the first section telescopic arm; the rear end of the first section telescopic arm is respectively installed with the upper rear pulley group of the first section telescopic arm and the lower rear pulley group of the first section telescopic arm, and the upper rear pulley group of the first section telescopic arm and the lower rear pulley group of the first section telescopic arm are respectively adapted to be embedded on the upper and lower inner wall guide rails of the telescopic arm main arm; The front end of one telescopic arm is respectively installed with the front upper supporting pulley group of the second telescopic arm and the front lower supporting pulley group of the second telescopic arm, and the front upper supporting pulley group of the second telescopic arm and the front lower supporting pulley group of the second telescopic arm are respectively adapted to be embedded in the upper and lower outer wall guide rails of the second telescopic arm; the rear tail end of the second telescopic arm is respectively installed with the rear upper pulley group of the second telescopic arm and the rear lower pulley group of the second telescopic arm, and the rear upper pulley group of the second telescopic arm and the rear lower pulley group of the second telescopic arm are respectively adapted to be embedded in the upper and lower inner wall guide rails of the first telescopic arm.

3. The small ultra-light electric multi-section synchronous retractable photography and video camera jib according to claim 2, characterized in that: The rollers in the front lower supporting pulley group of the first telescopic arm and the front lower supporting pulley group of the second telescopic arm are fixed on the eccentric shaft seat on the corresponding telescopic arm through the corresponding eccentric shaft assembly, so that the gap between the rollers of the pulley group and the corresponding guide rail can be adjusted.

4. The small, ultra-light electric multi-section synchronously retractable photography and video camera jib according to claim 1, characterized in that: A counterweight linear slide is installed at the top of the main arm of the telescopic arm along the length direction, and a counterweight pulley is slidably installed on the counterweight linear slide. A dynamic balancing counterweight is detachably installed on the counterweight pulley; the counterweight pulley is fixedly connected to the upper belt body in the linkage transmission synchronous belt.

5. The small ultra-light electric multi-section synchronous retractable photography and video camera jib according to claim 4, characterized in that: The linkage transmission synchronous belt is an open synchronous belt, and both ends of the open synchronous belt are respectively connected to both sides of the counterweight pulley.

6. The small, ultra-light electric multi-section synchronously retractable photography and video camera jib according to claim 1, characterized in that: An adjustable rope fixing seat is installed on the outer bottom surface of the telescopic arm main arm, and a mounting hole two for installing the telescopic arm main arm guide fixed pulley is opened at the lower end of the telescopic arm main arm located in front of the adjustable rope fixing seat. The first section telescopic arm tail end guide fixed pulley is installed on the outer side of the tail end of the first section telescopic arm, and a linkage fixing block is installed on the lower wall near the tail end of the second section telescopic arm. The first section telescopic arm front end guide fixed pulley is installed on the inner lower wall near the front side of the first section telescopic arm, and the telescopic arm main arm tail end rope fixing seat is installed on the inner lower wall near the tail end; the linkage rope includes a first linkage rope and a second linkage rope, and one end of the first linkage rope is connected to the adjustable rope fixing seat The first and second linkage ropes are directly connected at the linkage fixed block. When the linkage transmission synchronous belt drives the first section of the telescopic arm to retract, the first linkage rope drives the second section of the telescopic arm to retract synchronously. When the linkage transmission synchronous belt drives the first section of the telescopic arm to extend, the second linkage rope drives the second section of the telescopic arm to extend synchronously.

7. The small, ultra-light electric multi-section synchronously retractable photography and video camera jib according to claim 1, characterized in that: Adjustable angle long armrests are installed on the left and right sides of the telescopic arm along the length direction. The adjustable angle long armrests and the camera supporting head frame both adopt a built-in gear toothed disc structure to achieve angle adjustment.

8. The small, ultra-light electric multi-section synchronously retractable photography and video rocker arm according to claim 1, characterized in that: The output shaft end of the motor drives the main synchronous pulley to rotate through the driving synchronous belt. A guide fixed pulley shaft for supporting and guiding the linkage transmission synchronous belt is also installed in the tail end of the telescopic arm main arm.

9. The small, ultra-light electric multi-section synchronously retractable photography and video camera jib according to claim 1, characterized in that: A synchronous belt fixing block for fixing the middle and lower belt bodies of the linkage transmission synchronous belt is installed on the upper outer wall of the first telescopic arm.

10. The small, ultra-light electric multi-section synchronously retractable photography and video camera jib according to claim 1, characterized in that: A touch screen for human-computer interaction is also installed on the motor-powered tail box. The motor is controlled by a main control box installed at the bottom of the telescopic arm main arm. The main control box is equipped with a control handle for controlling the motor movement. A V-mount battery is connected to the main control box.

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