Pneumatic lifting support rod of camera tripod

Abstract

The pneumatic lifting supporting rod comprises an outer rod barrel and an inner rod barrel, the inner rod barrel is arranged in the outer rod barrel and can slidably ascend and descend, a plurality of pneumatic telescopic rods and an adjusting locking mechanism on the top of the pneumatic telescopic rods are arranged in the inner rod barrel, the pneumatic telescopic rods are circumferentially distributed, and the bottom end of the inner rod barrel is open. The pneumatic telescopic rod comprises an outer air cylinder and an inner movable rod which are slidably connected. The bottom end of the outer air cylinder is fixedly connected with the bottom of the outer rod cylinder. The adjusting and locking mechanism is fixed to the top of the inner movable rod and slidably connected with the inner rod barrel, the adjusting and locking mechanism can adjust pneumatic supports of different pneumatic telescopic rods and lock the pneumatic balance height, the outer rod barrel can be installed in the center of a camera tripod, and a camera holder can be installed on the top of the inner rod barrel. The device has the advantages that according to the weight of the camera, the rotary knob is rotated to the corresponding gear, the camera is lifted to the pneumatic balance height of the pneumatic telescopic rod, and then the rotary plate is rotated to enable the camera to be stabilized at the height. Adjustment is convenient, accurate and fast, and an inflator is not needed.

Description

Technical Field

[0001] This invention relates to the field of pneumatic lifting support rods for camera tripods, specifically to a pneumatic lifting support rod for a camera tripod. Background Technology

[0002] A camera tripod typically consists of three supports and is widely used in the field of videography. During filming, the camera tripod greatly reduces the workload of cameramen. At the same time, it can also store the camera during filming, giving cameramen some free time.

[0003] Traditional camera tripods typically have a fixed pole at the top, with the camera head mounted on top. The camera is simply mounted on the pole. However, these fixed-pole tripods lack height adjustment, severely limiting their practical use. Currently, there are tripods on the market with integrated air pumps. These air pumps consist of an air cylinder, on which the camera and pan / tilt head are mounted for adjustable height. However, when the camera's weight increases, the air pump needs to be inflated to maintain a constant height and balance the weight. Therefore, these tripods with air pumps are inconvenient and time-consuming to adjust. When the camera's weight decreases, manual deflating is required, leading to inaccurate adjustments and difficulty in achieving a new dynamic balance. Summary of the Invention

[0004] The purpose of this invention is to provide a pneumatic lifting support rod for a camera tripod to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solutions: This invention discloses a pneumatic lifting support rod for a camera tripod, comprising an outer rod tube and an inner rod tube. The inner rod tube is located inside the outer rod tube and can slide and lift. The inner rod tube is provided with a pneumatic telescopic rod and an adjustment and locking mechanism at its top. The pneumatic telescopic rod comprises several circumferentially distributed components. The bottom end of the inner rod tube is open. The pneumatic telescopic rod includes an outer air cylinder and an inner moving rod that are slidably connected. The bottom end of the outer air cylinder is fixedly connected to the bottom of the outer rod tube. The adjustment and locking mechanism is fixed to the top of the inner moving rod and slidably connected to the inner rod cylinder. The adjustment and locking mechanism can adjust the pneumatic support of different pneumatic telescopic rods and lock the pneumatic balance height. The outer rod cylinder can be installed at the center of the camera tripod, and the camera pan-tilt head can be installed on the top of the inner rod cylinder.

[0006] As an improvement, the inner moving rod is provided with an annular notch near the top; the adjustment and locking mechanism includes a knob, a shift shaft, several fixedly overlapping shift plates, several fixedly overlapping ring plates, an upper pressure plate and a base plate; The knob is located at the top of the inner cylinder and can be raised and lowered synchronously. The knob can be lowered to engage the shift shaft and rotate synchronously. The shift shaft is fixed at the center of several overlapping shift plates and presses them down. Several bead grooves are provided around the shift shaft. A fixed protrusion is provided around the shift plates. The shift plates are located in the ring plates and can rotate. The ring plates are fitted on the top of the inner moving rod. The number and thickness of the shift plates and the ring plates are the same. An elastic retaining plate is provided in the ring plates. The elastic retaining plate pushes and engages with the protrusion and can lock the annular notch. The upper pressure plate is fixed on the top of several ring plates and can press down the shift shaft. A ball is provided in the upper pressure plate. The ball can be inserted into the bead groove. The base plate is fixed on the top of the outer cylinder. The inner moving rod passes through the base plate, the ring plates, and the upper pressure plate, and its top end is flush with the top surface of the upper pressure plate. The inner moving rod can extend out of the upper pressure plate synchronously as the inner cylinder rises. The upper pressure plate, ring plate and base plate are fixedly connected by bolts, and the shift shaft and shift plate are fixedly connected by bolts.

[0007] As an improvement, the top of the inner rod cylinder is provided with a bolt-connected fixing platform, which can press down the upper pressure plate. The knob is located at the center of the fixing platform. The top of the fixing platform is provided with a fixed support bowl, which is spaced from the fixing platform. The support bowl is used to install the camera pan-tilt head.

[0008] As an improvement, the top of the outer rod cylinder is provided with a fixed seat, the fixed seat is provided with an elastic fastening block and several fixed sliders, the outside of the fixed seat is provided with a rotatable rotating plate, the fixed shaft of the rotating plate can push the elastic fastening block to press it against the inner rod cylinder, several fixed guide rails are provided around the inner rod cylinder, the sliders are stuck on the guide rails and can slide, and the bottom of the inner rod cylinder is provided with a fixed convex ring plate, the convex ring plate can slide along the inner wall of the outer rod cylinder.

[0009] As an improvement, the mounting base is provided with three fixed bracket connectors around it, which are used to install and connect the camera tripod.

[0010] As an improvement, the top of the upper pressure plate is provided with a fixed unlocking block, the bottom of the fixed platform is provided with an elastic locking rod, and several locking holes are provided around the bottom of the knob. The elastic locking rod is inserted into the locking hole, and the unlocking block can push the elastic locking rod out of the locking hole. The number of locking holes is the same as the number of bead grooves.

[0011] As an improvement, a central rod is provided inside the inner rod cylinder, the bottom end of which is fixedly connected to the bottom of the outer rod cylinder, and the top end of which is fixedly connected to the base plate by bolts.

[0012] The advantages of this invention compared to existing technologies are as follows: Based on the camera's weight, turning the knob to the corresponding position causes the corresponding elastic retaining plate to disengage from the annular notch, releasing the corresponding inner moving rod. Immediately afterward, the inner moving rod rises while the elastic locking rod quickly disengages from the unlocking block. The fixing platform is then lifted, raising the camera to the pneumatic balance height of the pneumatic telescopic rod. Then, rotating the rotary plate causes the elastic fastening block to press against the inner rod cylinder, fixing the height of the inner rod cylinder and stabilizing the camera at this height. At this point, the elastic locking rod is inserted into the locking hole under spring action, and the locking knob cannot be rotated. This operation can be used to achieve a new balance height each time a different camera is replaced or when adding or removing auxiliary equipment from the current camera. Adjustment is convenient, accurate, and quick, requiring no air pump. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings listed below are only some structural schematic diagrams of the present invention, and not all of them.

[0014] Figure 1 This is a schematic diagram of the structure of a pneumatic lifting support rod for a camera tripod according to the present invention. Figure 1 .

[0015] Figure 2 This is a schematic diagram of the structure of a pneumatic lifting support rod for a camera tripod according to the present invention. Figure 2 .

[0016] Figure 3 This is a cross-sectional view of a pneumatic lifting support rod for a camera tripod according to the present invention. Figure 1 .

[0017] Figure 4 This is a cross-sectional view of a pneumatic lifting support rod for a camera tripod according to the present invention. Figure 2 .

[0018] Figure 5 This is a schematic diagram of the structure of the adjustment and locking mechanism of the pneumatic lifting support rod of a camera tripod according to the present invention. Figure 1 .

[0019] Figure 6 This is a cross-sectional view of the adjustment and locking mechanism of the pneumatic lifting support rod of a camera tripod according to the present invention. Figure 1 .

[0020] Figure 7 This is a cross-sectional view of a pneumatic lifting support rod for a camera tripod according to the present invention. Figure 3 .

[0021] Figure 8 This is a schematic diagram of the structure of the adjustment and locking mechanism of the pneumatic lifting support rod of a camera tripod according to the present invention. Figure 2 .

[0022] Figure 9 This is a bottom view of the adjustment and locking mechanism of the pneumatic lifting support rod of a camera tripod according to the present invention.

[0023] Figure 10 This is a schematic diagram of the structure of the fixing platform of the pneumatic lifting support rod of a camera tripod according to the present invention.

[0024] Figure 11 This is a schematic diagram of the shift shaft of the pneumatic lifting support rod of a camera tripod according to the present invention.

[0025] Figure 12 This is a schematic diagram of the structure of the knob of the pneumatic lifting support rod of a camera tripod according to the present invention.

[0026] Figure 13 yes Figure 3 Enlarged view of point A in the middle.

[0027] Figure 14 This is a schematic diagram of the shift plate structure of the pneumatic lifting support rod of a camera tripod according to the present invention. Figure 1 .

[0028] Figure 15 This is a schematic diagram of the shift plate structure of the pneumatic lifting support rod of a camera tripod according to the present invention. Figure 2 .

[0029] Figure 16 This is a schematic diagram of the shift plate structure of the pneumatic lifting support rod of a camera tripod according to the present invention. Figure 3 .

[0030] Figure 17 This is a schematic diagram of the shift plate structure of the pneumatic lifting support rod of a camera tripod according to the present invention. Figure 4 .

[0031] Figure label: Outer rod cylinder 1; fixed base 11; elastic fastening block 111; slider 112; rotating plate 113; bracket connector 114; center rod 12; inner rod cylinder 2; fixed platform 21; elastic locking rod 211; support bowl 22; guide rail 23; convex ring plate 24; pneumatic telescopic rod 3; outer air cylinder 31; inner moving rod 32; annular notch 321; adjusting and locking mechanism 4; knob 41; lock hole 411; shift shaft 42; ball groove 421; shift plate 43; protrusion 431; ring plate 44; elastic retaining plate 441; upper pressure plate 45; ball 451; unlocking block 452; base plate 46. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of the embodiments of the present invention, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0034] Furthermore, the terms "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance. The use of terms such as "horizontal," "vertical," and "suspended" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be perfectly horizontal, but can be slightly tilted.

[0035] In the description of the embodiments of the present invention, the terms "multiple" or "several" refer to at least two.

[0036] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0037] This embodiment, in conjunction with the accompanying drawings, provides a detailed description of a pneumatic lifting support rod for a camera tripod.

[0038] This embodiment describes a pneumatic lifting support rod for a camera tripod, such as... Figures 1 to 4As shown, it includes an outer rod cylinder 1 and an inner rod cylinder 2, both made of carbon fiber. The inner rod cylinder 2 is inside the outer rod cylinder 1 and can slide and rise. The inner rod cylinder 2 is equipped with a pneumatic telescopic rod 3 and an adjustment and locking mechanism 4 at its top. The pneumatic telescopic rod 3 includes several circumferentially distributed components. The bottom end of the inner rod cylinder 2 is open. The pneumatic telescopic rod 3 includes an outer air cylinder 31 and an inner moving rod 32 that are slidably connected. The bottom end of the outer air cylinder 31 is fixedly connected to the bottom of the outer rod cylinder 1. The pneumatic telescopic rod 3 is an existing product and contains compressed air. The adjustment and locking mechanism 4 is fixed to the top of the inner moving rod 32 and slidably connected to the inner rod cylinder 2. The adjustment and locking mechanism 4 can adjust the pneumatic support of different pneumatic telescopic rods 3 and lock the pneumatic balance height. The outer rod cylinder 1 can be installed at the center of the camera tripod, and the camera pan-tilt head can be installed on the top of the inner rod cylinder 2.

[0039] like Figures 4 to 13 As shown, the inner moving rod 32 has an annular notch 321 near the top; the adjustment and locking mechanism 4 includes a knob 41, a shift shaft 42, several fixedly overlapping shift plates 43, several fixedly overlapping ring plates 44, an upper pressure plate 45, and a base plate 46; all are made of aluminum alloy. The knob 41 is rotatably mounted at the top of the inner rod cylinder 2 and can be raised and lowered synchronously. The knob 41 can be downwardly engaged with the shift shaft 42 and rotate synchronously (the bottom of the knob 41 has a hexagonal hole, and the top of the shift shaft 42 has a hexagonal head). The shift shaft 42 is fixedly mounted at the center of several overlapping shift plates 43 and presses them down. Several bead grooves 421 are provided around the shift shaft 42. The shift plates 43 are surrounded by integrally fixed protrusions 431. The shift plates 43 are located in the ring plate 44 and can rotate. The ring plate 44 is fitted on the top of the inner moving rod 32. The number and thickness of the shift plates 43 and the ring plate 44 are the same. The ring plate 44 is provided with an elastic retaining piece 441. The spring moves, the elastic retaining plate 441 and the protrusion 431 push and cooperate and can lock the annular notch 321, the upper pressure plate 45 is fixed to the top of several ring plates 44 and can press the shift shaft 42, the upper pressure plate 45 is provided with a ball 451, the ball 451 is pushed by the spring behind it, the ball 451 can be locked into the ball groove 421, limiting the gear position and making the rotating knob 41 shift gears with a jerky feeling, the base plate 46 is fixed to the top of the outer air cylinder 31, the inner moving rod 32 passes through the base plate 46, the ring plate 44, and the upper pressure plate 45 and the top end is flush with the top surface of the upper pressure plate 45, the inner moving rod 32 can rise synchronously with the inner rod cylinder 2 and extend out of the upper pressure plate 45; The upper pressure plate 45, the ring plate 44 and the base plate 46 are fixedly connected by bolts, and the shift shaft 42 and the shift plate 43 are fixedly connected by bolts.

[0040] like Figures 1 to 4As shown, the inner rod cylinder 2 has a bolted fixed platform 21 at its top end. The fixed platform 21 can press down the upper pressure plate 45. The knob 41 is rotatably located at the center of the fixed platform 21. The knob 41 on the top surface of the fixed platform 21 has a number of positions (0-16) around it. The top of the fixed platform 21 has a fixed support bowl 22. The support bowl 22 is spaced from the fixed platform 21 to facilitate reaching out and rotating the knob 41. The support bowl 22 is used to install the camera pan-tilt head.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 As shown, the top of the outer rod cylinder 1 is provided with a fixed seat 11, and the fixed seat 11 is provided with an elastic fastening block 111 and a number of fixed sliders 112. Figure 7 An elastic fastening block 111 is fitted onto a movable rod, which is fixedly connected to a spring and slidably connected to a fixed seat 11, thereby controlling the movement of the elastic fastening block 111. The elastic fastening block 111 is made of plastic. A rotatable rotating plate 113 is provided on the outside of the fixed seat 11. The fixed shaft of the rotating plate 113 is threadedly connected to the fixed seat 11, which can push the elastic fastening block 111 to press it against the inner rod cylinder 2. Several fixed guide rails 23 are provided around the inner rod cylinder 2. The slider 112 is stuck on the guide rail 23 and can slide. A fixed convex ring plate 24 is provided at the bottom of the inner rod cylinder 2. The convex ring plate 24 can slide along the inner wall of the outer rod cylinder 1.

[0042] like Figure 1 , Figure 2 As shown, the fixed base 11 is surrounded by three fixed bracket connectors 114, which adopts the existing design. The bracket connectors 114 are used to install and connect the camera tripod.

[0043] like Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 10 As shown, the upper pressure plate 45 is provided with a fixed unlocking block 452 at the top, with an acute-angled bevel at the top. The fixed platform 21 is provided with an elastic locking rod 211 at the bottom, with a fixed frame in the middle of the elastic locking rod 211. The knob 41 is provided with several locking holes 411 around its bottom. The elastic locking rod 211 is inserted into the locking hole 411. The unlocking block 452 can push the elastic locking rod 211 (the bevel pushes the fixed frame) to make it exit the locking hole 411. The number of locking holes 411 is the same as the number of bead grooves 421.

[0044] like Figure 3 , Figure 4As shown, the inner rod cylinder 2 is provided with a central rod 12. The bottom end of the central rod 12 is fixedly connected to the bottom of the outer rod cylinder 1, and the top end of the central rod 12 is fixedly connected to the base plate 46 by bolts. The central rod 1 is fixed with the adjustment and locking mechanism 4.

[0045] In practical implementation, the pneumatic telescopic rod 3 is equipped with four pneumatic support forces with load capacities of 1kg, 2kg, 4kg, and 8kg, respectively, for a total load capacity of 15kg. The shift plates 43 and the ring plates 44 each have four overlapping pieces. The four shift plates 43 have different shapes, and from top to bottom, the shift plates 43 include 8, 4, 2, and 1 protrusions 431, respectively. They have sixteen pushing states and one fully locked state with the four elastic locking plates 441 (all four elastic locking plates 441 are locked in the annular notch 321). According to the arrangement and combination rules, the four pneumatic telescopic rods 3 are arranged into 16 positions (16 load capacity combinations). Correspondingly, there are sixteen bead grooves 421 and sixteen locking holes 411. The knob 41 has sixteen positions. The position dial of the fixed platform 21 has position numbers from 0 to 16 (a total of 17). The larger the position number, the greater the load capacity of the pneumatic telescopic rod 3 combination. Position 0 is the fully locked state.

[0046] In use, the pneumatic lifting support rod is installed in the center of the tripod, the outer rod cylinder 1 is fixed, the pan-tilt head is installed on the support bowl 22, the camera is installed on the pan-tilt head, and the inner rod cylinder 2 can be raised and lowered freely. When the knob 41 is pointed to the 0 position, the fixed platform 21 presses on the upper pressure plate 45. At this time, each elastic locking piece 441 locks the corresponding annular notch 321, and each inner moving rod 32 is fixed and cannot be raised. At this time, the unlocking block 452 pushes the elastic locking rod 211 to keep it in the state of not being inserted into the locking hole 411, and the knob 41 can rotate freely. According to the weight of the camera, turn the knob 41 to the corresponding position. The corresponding elastic locking piece 441 disengages from the annular notch 321, releasing the corresponding inner moving rod 32. Immediately afterwards, the inner moving rod 32 rises while the elastic locking rod 211 quickly disengages from the unlocking block 452. The fixed platform 21 is lifted, raising the camera to the pneumatic balance height of the pneumatic telescopic rod 3. Then, rotate the rotary plate 113 to press the elastic fastening block 111 against the inner rod cylinder 2, fixing the height of the inner rod cylinder 2 and stabilizing the camera at this height. At this time, the elastic locking rod 211 is inserted into the lock hole 411 under the action of the spring, and the locking knob 41 cannot be rotated.

[0047] Each time you change to a different camera or add or remove auxiliary equipment on the current camera, first unlock and then press to lower the fixed platform 21 onto the upper pressure plate 45. After the knob 41 is reset to the 0 position, use the above operation to achieve a new balance height.

[0048] The present invention and its embodiments have been described above. This description is not restrictive, and the actual scope of protection is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this invention should be included within the scope of protection of this invention. Therefore, the scope of protection of this invention should be determined by the scope of the claims.

Claims

1. A pneumatic lifting support rod for a camera tripod, characterized in that, It includes an outer rod cylinder (1) and an inner rod cylinder (2). The inner rod cylinder (2) is inside the outer rod cylinder (1) and can slide and rise. The inner rod cylinder (2) is provided with a pneumatic telescopic rod (3) and an adjustment and locking mechanism (4) at its top. The pneumatic telescopic rod (3) includes several circumferentially distributed ones. The bottom end of the inner rod cylinder (2) is open. The pneumatic telescopic rod (3) includes an outer air cylinder (31) and an inner moving rod (32) that are slidably connected. The bottom end of the outer air cylinder (31) is fixedly connected to the bottom of the outer rod cylinder (1). The adjustment and locking mechanism (4) is fixed to the top of the inner moving rod (32) and slidably connected to the inner rod cylinder (2). The adjustment and locking mechanism (4) can adjust the pneumatic support of different pneumatic telescopic rods (3) and lock the pneumatic balance height. The outer rod cylinder (1) can be installed at the center of the camera tripod. The camera pan-tilt head can be installed on the top of the inner rod cylinder (2).

2. The pneumatic lifting support rod for a camera tripod according to claim 1, characterized in that, The inner moving rod (32) has an annular notch (321) near the top; the adjustment and locking mechanism (4) includes a knob (41), a shift shaft (42), several fixed overlapping shift plates (43), several fixed overlapping ring plates (44), an upper pressure plate (45), and a base plate (46). The knob (41) is rotatably located at the top of the inner rod cylinder (2) and can be raised and lowered synchronously. The knob (41) can be downwardly engaged with the shift shaft (42) and rotate synchronously. The shift shaft (42) is fixedly located at the center of several overlapping shift plates (43) and presses them down. Several bead grooves (421) are provided around the shift shaft (42). A fixed protrusion (431) is provided around the shift plate (43). The shift plate (43) is located in the ring plate (44) and can rotate. The ring plate (44) is fitted on the top of the inner moving rod (32). The number and thickness of the shift plates (43) and the ring plate (44) are the same. An elastic retaining plate is provided in the ring plate (44). 441), the elastic retaining plate (441) and the protrusion (431) push and cooperate and can lock the annular notch (321), the upper pressure plate (45) is fixed on the top of several ring pieces (44) and can press the shift shaft (42), the upper pressure plate (45) is provided with a ball (451), the ball (451) can be locked in the ball groove (421), the base plate (46) is fixed on the top of the outer air cylinder (31), the inner moving rod (32) passes through the base plate (46), the ring piece (44) and the upper pressure plate (45) and the top end is flush with the top surface of the upper pressure plate (45), the inner moving rod (32) can rise synchronously with the inner rod cylinder (2) and extend out of the upper pressure plate (45); The upper pressure plate (45), the ring plate (44) and the base plate (46) are fixedly connected by bolts, and the shift shaft (42) and the shift plate (43) are fixedly connected by bolts.

3. The pneumatic lifting support rod for a camera tripod according to claim 2, characterized in that, The inner rod tube (2) has a bolt-connected fixed platform (21) at the top. The fixed platform (21) can press down the upper pressure plate (45). The knob (41) is located at the center of the fixed platform (21). The fixed platform (21) has a fixed support bowl (22) at the top. The support bowl (22) is spaced from the fixed platform (21). The support bowl (22) is used to install the camera pan-tilt unit.

4. The pneumatic lifting support rod for a camera tripod according to claim 1, characterized in that, The top of the outer rod cylinder (1) is provided with a fixed seat (11), the fixed seat (11) is provided with an elastic fastening block (111) and several fixed sliders (112), the outside of the fixed seat (11) is provided with a rotatable rotating plate (113), the fixed shaft of the rotating plate (113) can push the elastic fastening block (111) to press it against the inner rod cylinder (2), the inner rod cylinder (2) is provided with several fixed guide rails (23), the sliders (112) are stuck on the guide rails (23) and can slide, the bottom of the inner rod cylinder (2) is provided with a fixed convex ring plate (24), the convex ring plate (24) can slide along the inner wall of the outer rod cylinder (1).

5. The pneumatic lifting support rod for a camera tripod according to claim 4, characterized in that, The fixed base (11) is surrounded by three fixed bracket connectors (114), which are used to install and connect the camera tripod.

6. The pneumatic lifting support rod for a camera tripod according to claim 3, characterized in that, The upper pressure plate (45) is provided with a fixed unlocking block (452) at the top, and the fixed platform (21) is provided with an elastic locking rod (211) at the bottom. The knob (41) is provided with several locking holes (411) around its bottom. The elastic locking rod (211) is inserted into the locking hole (411), and the unlocking block (452) can push the elastic locking rod (211) to make it exit the locking hole (411). The number of locking holes (411) is the same as the number of bead grooves (421).

7. The pneumatic lifting support rod for a camera tripod according to claim 2, characterized in that, The inner rod tube (2) is provided with a central rod (12), the bottom end of the central rod (12) is fixedly connected to the bottom of the outer rod tube (1), and the top end of the central rod (12) is fixedly connected to the base plate (46) by bolts.

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