One-touch operation support stand

Abstract

We offer a one-touch operation support stand that is easy to use, has a fast extension and retraction speed, and can lock instantly. [Solution] The system includes a mounting platform 100, multiple support legs 200, and an operating handle 300. Each support leg includes a support leg head base 210, multiple leg tubes that extend axially from the outside to the inside, a leg tube locking assembly for locking or unlocking the multiple leg tubes, a transmission shaft assembly rotatably mounted around its own axial direction, and a gear transmission assembly mounted on the support leg head base. The transmission shaft assembly is transmitted between the power output end of the gear transmission assembly and the leg tube locking assembly. Multiple traction wires are connected to the operating handle, and each of the multiple traction wires is connected to the power input end of the gear transmission assembly of a different support leg. The operating handle is used to apply traction force to three traction wires simultaneously. The operating handle can apply traction force to three traction wires simultaneously, enabling simultaneous locking or unlocking of the three support legs, and enabling one-touch release and one-touch locking of the three support legs.

Description

Technical Field

[0001] The present invention relates to the technical field of photographing auxiliary devices, and specifically to a one-touch operation type support stand.

Background Art

[0002] A support stand for photographing mainly includes a mounting platform and three support leg assemblies with one end pivotally attached to the mounting platform. The mounting platform is used to attach photographing devices such as cameras. Each support leg assembly includes a plurality of telescopic support leg tubes, and a locking mechanism is provided between two adjacent support leg tubes. Each set of locking mechanisms has an independent lock / unlock switch. To deploy all the support leg tubes on the support leg assembly, it is necessary to turn on two sets of lock / unlock switches. To deploy the entire support stand, it is necessary to turn on six lock / unlock switches, and the convenience in use is extremely poor.

[0003] In order to solve the problem that the lock / unlock operation of the conventional support stand is complicated, a control handle is arranged on the mounting platform of the support stand, and the user can control the locking and unlocking of the telescopic adjustment function of the three support leg assemblies by operating the control handle with one touch. In the locked state, all three support leg assemblies cannot be telescoped. In the unlocked state, the user can operate the support leg assembly to expand and contract to adjust its support height.

[0004] In some one-touch locking support stands, the control handle is a hydraulically driven handle, with a hydraulic cylinder housed within the hydraulic drive handle, and a piston cylinder and piston rod housed inside the support leg assembly. The locking mechanism between two adjacent support leg tubes is fixedly connected to the piston rod, and the hydraulic cylinder supplies hydraulic fluid to the piston cylinders inside each of the three support leg assemblies via multiple oil pipes. The piston rod drives the locking mechanism to move and achieve locking / unlocking between two adjacent support leg tubes.

[0005] However, in support stands that are locked by hydraulic drive in this way, it takes a certain amount of time for the hydraulic fluid to flow through the oil pipes, so the two adjacent support leg tubes cannot lock instantaneously, resulting in a lock delay phenomenon, and there is still room for improvement. [Overview of the project] [Problems that the invention aims to solve]

[0006] Therefore, the technical problem that this invention aims to solve is to overcome the defect in the system where the drive handle of the support stand uses hydraulic drive to lock the support legs, which does not lock instantly and affects the user experience, thereby providing a support stand that can be operated with a single touch. [Means for solving the problem]

[0007] To solve the above technical problems, the technical solutions of this invention are as follows. A one-touch operated support stand comprising a mounting platform, at least three support legs with one end connected to the mounting platform, and an operating handle connected to the mounting platform, each of the support legs being, A support leg head base, one end of which is connected to the mounting platform, A leg tube assembly comprising multiple stages of leg tubes, which are sequentially arranged from the outside to the inside and are extendable in the axial direction, wherein one end of the outermost leg tube is fixedly connected to the support leg head base, A leg tube locking assembly located within the support leg and used to lock or unlock multiple stages of the leg tubes, A transmission shaft assembly located on the support leg and rotatable around its own axial direction, wherein the transmission shaft assembly is transmitted to the leg tube lock assembly, A gear transmission assembly, which is attached to the support leg head base and whose power output end is transmitted to the transmission shaft assembly, A towing wire, connected to the power input end of the gear transmission assembly, the towing wire drives the leg tube lock assembly via the gear transmission assembly and the transmission shaft assembly to lock or unlock it. The system includes a configuration in which at least three of the traction wires extend from the support leg head base and are each connected to the operating handle, the operating handle being used to apply traction force to at least three of the traction wires simultaneously.

[0008] Furthermore, the gear transmission assembly is mounted inside the support leg head base, and the gear transmission assembly is, A rotating shaft connected to the aforementioned support leg head base and rotatable around its own axial direction, A swinging arm, with one end fixedly connected to the rotating shaft and the other end fixedly connected to the traction wire, A first gear is fixedly fitted to the aforementioned rotating shaft and rotates in sync with the rotation of the swinging arm, A second gear, which is connected to the support leg head base and fixedly connected coaxially with the transmission shaft assembly, and the second gear is transmitted to the first gear, When the towing wire is pulled, it moves the oscillating arm, the rotating shaft, and the first gear, causing the rotating shaft to rotate around its axial direction, and the first gear moves the second gear and the transmission shaft assembly, causing it to rotate around its own axial direction.

[0009] Furthermore, the gear transmission assembly further includes a right-angle double-sided rack transmitted between the first gear and the second gear, the right-angle double-sided rack comprising a first rack and a second rack whose tooth surfaces are perpendicular to each other, the first rack meshing with the first gear and the second rack meshing with the second gear.

[0010] Furthermore, the pitch of the first rack is greater than the pitch of the second rack.

[0011] Furthermore, a straight chute is provided at the bottom of the support leg head base, the guiding direction of the straight chute is parallel to the longitudinal direction of the first rack, and the right-angle double-sided rack includes a rack slider slidably connected to the straight chute along the guiding direction of the straight chute.

[0012] Furthermore, a return spring is provided within the linear chute, and when the oscillating arm is pulled and rotated by the traction wire, the return spring is compressed by the lux slider and stores elastic energy.

[0013] Furthermore, a guide rod is provided within the linear chute and is fixedly connected to the support leg head base. The axial direction of the guide rod is parallel to the longitudinal direction of the first rack, and the rack slider is fitted onto the outer circumference of the guide rod and slidably connected to the guide rod.

[0014] Furthermore, a side mounting seat is fixedly connected to the inner wall of the support leg head base, one end of the rotating shaft is connected to the side mounting seat, an arc-shaped stopper groove is provided in the side mounting seat, the center of the arc-shaped stopper groove is located on the axis of the rotating shaft, a guide shaft is fixed to one end of the swing arm connected to the traction wire, the axial direction of the guide shaft is parallel to the axial direction of the rotating shaft, and one end of the guide shaft is inserted into the arc-shaped stopper groove.

[0015] Furthermore, the gear transmission assembly further includes a torsion spring fitted around the outer circumference of the rotating shaft, the torsion spring being located between the oscillating arm and the side mounting seat, one end of which is connected to the side mounting seat and the other end to the oscillating arm, and when the oscillating arm is pulled and rotated by the traction wire, the torsion spring is twisted and stores elastic energy.

[0016] Furthermore, the mounting platform is provided with a centrally located connecting head for attaching a photographic device, an annular cavity is provided inside the mounting platform around the circumferential direction of the connecting head, a plurality of protective tubes are routed around the annular cavity, one end of each protective tube is routed out from the mounting platform and connected to the operating handle, the other ends of each protective tube are routed out from the mounting platform and connected to each of the support leg head bases, and a plurality of traction wires are routed through internal passages of each of the protective tubes.

[0017] Furthermore, the leg tube assembly includes a front leg tube, a middle leg tube, and a rear leg tube that are sequentially provided from the outside to the inside and are axially expandable and contractible, and the front leg tube, middle leg tube, and rear leg tube are held in a relative circumferential fixed position. The leg tube lock assembly includes a first lock assembly mounted between the front leg tube and the middle leg tube, and a second lock assembly mounted between the middle leg tube and the rear leg tube. The transmission shaft assembly includes an internal transmission shaft, one end of which is fixedly connected to the power output end of the gear transmission assembly, and an external transmission shaft fitted around the outer circumference of the internal transmission shaft and held relative to the internal transmission shaft in a circumferentially fixed and relative to axially sliding manner, wherein the external transmission shaft is operably connected to a first locking assembly to releasely prevent the movement of the middle leg tube relative to the front leg tube, and the external transmission shaft is operably connected to a second locking assembly to releasely prevent the movement of the rear leg tube relative to the middle leg tube.

[0018] Furthermore, the first lock assembly is A first fixing sleeve, which is fixedly connected to the middle leg tube and has one end inserted into the front leg tube, and has a first inclined tapered surface on the outer wall of the first fixing sleeve, A first rotating sleeve, provided coaxially with the first fixed sleeve and held in a relative axial fixed and relative circumferential rotational position with respect to the first fixed sleeve, wherein the first rotating sleeve is fitted onto the outer circumference of the external transmission shaft and held in a relative circumferential fixed position with respect to the external transmission shaft, A first sliding sleeve, which is located inside the front leg tube and at least a portion of which is fitted onto the outer circumference of the first fixed sleeve, and the first sliding sleeve is screwed onto the outer circumference of the first rotating sleeve, When the external drive shaft moves the first rotating sleeve and rotates it in the circumferential direction, one end of the first sliding sleeve slides into the gap between the first fixed sleeve and the front leg tube and presses against the first inclined tapered surface of the first fixed sleeve to lock the front leg tube and the middle leg tube, or one end of the first sliding sleeve slides out from the gap between the first fixed sleeve and the front leg tube and loosens the first inclined tapered surface of the first fixed sleeve to unlock the front leg tube and the middle leg tube.

[0019] Furthermore, a first ball is fitted inside the first sliding sleeve, and a portion of the first ball protrudes from the inner wall surface of the first sliding sleeve and contacts the first inclined tapered surface.

[0020] Further, the first inclined tapered surface includes a first-stage first inclined tapered surface and a second-stage first inclined tapered surface sequentially provided along the axial direction of the first fixed sleeve. There are two first balls, and the two first balls are respectively in contact with the first-stage first inclined tapered surface and the second-stage first inclined tapered surface.

[0021] Further, the first locking assembly further includes a first stopper sleeve located inside the front leg tube and fixedly fitted on the outer periphery of the first rotating sleeve. The first stopper sleeve is located at one end close to the leg head base of the first sliding sleeve, and a first elastic member is provided between the first stopper sleeve and the first sliding sleeve.

[0022] Further, the structure of the second locking assembly is the same as that of the first locking assembly.

[0023] Further, the operation handle includes an operation part connected to the mounting platform and a moving part driven by the operation part to move. At least three traction wires are all connected to the moving part after extending from the leg head base.

[0024] Further, the operation part is a handle shaft, one end of which is connected to the mounting platform, a movable chamber is provided inside the handle shaft, and a through chute is provided penetrating the handle shaft in the radial direction and extending along its axial direction; a handle rotating sleeve, which is fitted on the outer periphery of the handle shaft and is held in relative axial fixation and relative circumferential rotation installation with the handle shaft; The moving part is a handle sliding sleeve, which is slidably fitted on the outer periphery of the handle shaft along the axial direction of the handle shaft and is screwed to the inner wall of the handle rotating sleeve; The fixing pin includes a fixing pin which is fixedly connected to the handle sliding sleeve and slidably connected to the through chute along the axial direction of the handle shaft, and a plurality of the towing wires which are fixedly connected to the fixing pin through the internal cavity of the handle shaft.

[0025] Furthermore, the fixing pin is provided with multiple thread-threading holes for passing the towing wire through, and the towing wire is connected to a stopper tip of the towing wire, the stopper tip of which has an outer diameter larger than the thread-threading holes and contacts the fixing pin.

[0026] Furthermore, a stopper rib is provided on the outer wall of the handle shaft, the longitudinal direction of the stopper rib extends along the axial direction of the handle shaft, and a stopper groove is provided on the inner wall of the handle sliding sleeve that slides and engages with the stopper rib.

[0027] Furthermore, a handle hinge is fixedly connected to the outer circumference of the mounting platform, and the operating handle includes a handle connection seat fixedly connected to one end of the handle shaft adjacent to the handle hinge, the handle connection seat is rotatably connected to the handle hinge around the hinge shaft, and a handle lock knob for locking the handle connection seat and the handle hinge is connected to the hinge shaft. [Effects of the Invention]

[0028] This invention provides a one-touch operated support stand, and its beneficial effects are as follows: One end of the traction wire is connected to the gear transmission assembly of the support leg, and when the traction wire is pulled, it moves the leg tube lock assembly via the gear transmission assembly and the transmission shaft assembly to lock or loosen multiple stages of the leg tube assembly. At the same time, the other end of the traction wire, which is connected to at least three support legs, is connected to an operating handle. When the operating handle is operated, the operating handle can simultaneously apply traction force to at least three traction wires, and furthermore, it can achieve simultaneous locking or unlocking of at least three support legs, enabling one-touch release and one-touch fixing of multiple support legs, making operation easier and effectively improving the speed of extension and retraction adjustment of the support legs. Compared to conventional one-touch operated support stands that employ an electrically controlled operating handle, there is no need to charge, and there is no need to carry extra devices such as chargers and portable power supplies, making it more portable and easier to use. Compared to conventional one-touch operated support stands that employ a hydraulically driven handle, it can achieve instantaneous locking and there is no locking delay phenomenon. In the gear transmission assembly, the pitch of the first rack is greater than the pitch of the second rack, allowing for a larger transmission ratio. If the locking force of the locking assembly is constant, unlocking can be achieved by applying a relatively smaller force to the operating handle, resulting in labor savings. When the operating handle is rotated to the unlocked state, the torsion spring and return spring are released, instantly driving and rotating the transmission shaft assembly. Furthermore, the leg tube locking assembly is instantly driven to lock multiple leg tubes, and there is no apparent locking delay. [Brief explanation of the drawing]

[0029] To more clearly describe specific embodiments of the present invention or technical solutions in the prior art, the following briefly introduces the drawings that may be used to describe specific embodiments or the prior art. As will be clear, the drawings in the following description are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these without any creative work. [Figure 1] This is a schematic diagram of the three-dimensional structure of a one-touch operated support stand in an embodiment of the present invention. [Figure 2] This is a schematic diagram of the three-dimensional structure of the support leg in an embodiment of the present invention. [Figure 3] This is a cross-sectional view of the support leg in an embodiment of the present invention. [Figure 4] This is an enlarged view of section A in Figure 3. [Figure 5] This is a schematic diagram of the three-dimensional structure of a gear transmission assembly in an embodiment of the present invention. [Figure 6] This is a schematic diagram of the internal structure of the support leg head base of the gear transmission assembly in an embodiment of the present invention. [Figure 7] This is an enlarged view of section B in Figure 3. [Figure 8] This is an enlarged view of section C in Figure 3. [Figure 9] This is a schematic diagram illustrating the connection relationships between the mounting platform, support legs, operating handle, and protective tube in an embodiment of the present invention. [Figure 10] This is a schematic diagram of the three-dimensional structure of the operating handle in an embodiment of the present invention. [Figure 11] This is a cross-sectional view of the operating handle in an embodiment of the present invention. [Figure 12] This is a schematic diagram showing the connection relationship between the handle shaft and the fixing pin in an embodiment of the present invention. [Modes for carrying out the invention]

[0030] The following clearly and completely describes the technical solutions of the present invention with reference to the drawings, and it is clear that the embodiments described are only some, not all, embodiments of the present invention. All other embodiments obtained by a person skilled in the art without any creative work based on the embodiments of the present invention are all within the scope of protection of the present invention.

[0031] In describing this invention, the directions or positional relationships indicated by terms such as "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" are based on the directions or positional relationships shown in the drawings and are used solely to facilitate and simplify the explanation of this invention. They do not indicate or suggest that the device or element has a specific direction or must be constructed and operated in a specific direction, and therefore should not be understood as limiting this invention. Furthermore, the terms "first," "second," and "third" are used solely for explanatory purposes and should not be understood as indicating or suggesting relative importance.

[0032] In describing this invention, unless otherwise specifically defined and limited, the terms "attachment," "connection," and "connection" should be understood in a broad sense. For example, they may be fixed connections, removable connections, integral connections, mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, or internal communication between two elements. Those skilled in the art will be able to understand the specific meaning of these terms in this invention depending on the specific situation.

[0033] A one-touch operated support stand, as shown in Figure 1, includes a mounting platform, three support legs with one end hinged to the mounting platform, and an operating handle connected to the mounting platform. Here, a connecting head for mounting the photographic equipment is provided at the center of the mounting platform, the three support legs are connected to the outer circumference of the mounting platform and are evenly spaced along the circumferential direction of the mounting platform, and the operating handle is also connected to the outer circumference of the mounting platform and can be grasped and operated by hand. As can be understood here, the number of support legs is not limited to three, but may be more than three.

[0034] As shown in Figures 1 and 2, the support leg 200 includes a support leg head base 210 and a leg tube assembly 220. Here, one end of the support leg head base 210 is hinged to the mounting platform 100, and the leg tube assembly 220 includes a front leg tube 221, a middle leg tube 222, and a rear leg tube 223 that are sequentially arranged from the outside to the inside and are axially extendable. The front leg tube 221 and the middle leg tube 222 are held in a relative circumferentially fixed and relative axially sliding position, and the middle leg tube 222 and the rear leg tube 223 are also held in a relative circumferentially fixed and relative axially sliding position. One end of the front leg tube 221 is fixedly connected to the support leg head base 210. The specific structure in which the front leg tube 221, the middle leg tube 222, and the rear leg tube 223 are held in a relative circumferentially fixed and relative axially sliding position is prior art and is not a core invention of this application, so its explanation is omitted here. It should also be understood that the number of leg tubes included in the leg tube assembly 220 is not limited to three, but may be two, four, or more.

[0035] As shown in Figures 2, 3, and 4, the support leg 200 further includes a leg tube lock assembly and a transmission shaft assembly located within the support leg 200. Here, the leg tube lock assembly is used to lock or unlock the front leg tube 221, the middle leg tube 222, and the rear leg tube 223. The transmission shaft assembly is located in the support leg 200 and is rotatable around its axial direction, and the transmission shaft assembly is transmitted to the leg tube lock assembly. Specifically, the leg tube lock assembly includes a first lock assembly for locking or unlocking the front leg tube 221 and the middle leg tube 222, and a second lock assembly for locking or unlocking the middle leg tube 222 and the rear leg tube 223. The transmission shaft assembly includes a coaxially mounted and axially extendable internal transmission shaft 251 and an external transmission shaft 252. One end of the internal transmission shaft 251 is fixedly connected inside the support leg head base 210 and is rotatable around its axial direction. The other end of the internal transmission shaft 251 is inserted inside the front leg tube 221. The external transmission shaft 252 is fitted around the outer circumference of the internal transmission shaft 251 and is held circumferentially fixed relative to the internal transmission shaft 251. When the internal transmission shaft 251 rotates, the external transmission shaft 252 rotates in sync with the internal transmission shaft 251. The external transmission shaft 252 is operably connected to a first lock assembly to releasely prevent the movement of the middle leg tube 222 relative to the front leg tube 221, and the external transmission shaft 252 is operably connected to a second lock assembly to releasely prevent the movement of the rear leg tube 223 relative to the middle leg tube 222.

[0036] As shown in Figures 3, 4, and 5, the support legs 200 further include a gear drive assembly located within the support leg head base 210. The gear drive assembly includes a power input end and a power output end, the power output end of the gear drive assembly being fixedly connected to one end of the internal transmission shaft 251. A traction wire 410 is connected to the power input end of the gear drive assembly, and the other end of the traction wire 410 is connected to an operating handle 300. The three traction wires 410 connected to the three support legs 200 extend from the support leg head base 210 and are all connected to the operating handle 300, allowing the operating handle 300 to simultaneously apply traction force to the three traction wires 410. When the operating handle 300 is operated and traction force is applied to the traction wires 410, the traction wires 410 can pull and move the power input end of the gear drive assembly, and further move the internal transmission shaft 251 and the external transmission shaft 252, causing them to rotate around their own axial directions. When both the first and second lock assemblies are locked, the traction wire 410 moves the external drive shaft 252, causing it to rotate around its own axis. As the external drive shaft 252 rotates, it moves the first and second lock assemblies, simultaneously switching them to the unlocked state. At this time, the front leg tube 221, the middle leg tube 222, and the rear leg tube 223 are unlocked, allowing the multiple leg tubes to slide and adjust the extension and retraction length of the support leg 200. After the length of the support leg 200 is adjusted to a predetermined position, the operating handle 300 is operated to move it in the opposite direction, returning the traction wire 410 to its original position. The external drive shaft 252 rotates in the locking direction, and as the external drive shaft 252 rotates, it moves the first and second lock assemblies, simultaneously restoring them to the locked state. In this way, a one-time, high-speed locking or unlocking of multiple sets of lock assemblies between multiple leg tubes of the support leg 200 can be achieved, and the operation is relatively simple.

[0037] As shown in Figures 3, 4, and 5, the entire gear drive assembly is located inside the support head base 210 and includes a rotating shaft 261, a swing arm 262, a first gear 263, a second gear 264, a return spring 266, a guide rod 267, a guide shaft 268, and a torsion spring 269. Here, a side mounting seat 211 is fixedly connected to the inner wall of the support head base 210, the rotating shaft 261 is connected between one inner wall of the support head base 210 and the side mounting seat 211, and the rotating shaft 261 is rotatable around its own axial direction. One end of the swing arm 262 is fixedly connected to the rotating shaft 261, and a fixed wire hole for securing a traction wire 410 is provided at the other end of the swing arm 262. The first gear 263 is fixedly fitted to the rotating shaft 261 and rotates synchronously with the rotation of the swing arm 262. The second gear 264 is connected to the support leg head base 210 and is fixedly connected coaxially with the transmission shaft assembly, and the second gear 264 and the first gear 263 are connected in a meshing transmission manner. The internal transmission shaft 251 is rotatably connected to the bottom of the support leg head base 210 around its own axial direction via a bearing 213, and the second gear 264 is fixedly connected to the internal transmission shaft 251. As can be understood here, the first gear 263 and the second gear 264 can be directly meshed and transmitted, or an indirect meshing transmission structure can be realized via an intermediate gear member. When the traction wire 410 is pulled, the oscillating arm 262, the rotating shaft 261 and the first gear 263 move to rotate around the axial direction of the rotating shaft 261, and the first gear 263 moves the second gear 264 and the internal transmission shaft 251 to rotate around its own axial direction.

[0038] As shown in Figures 4, 5, and 6, the gear transmission assembly further includes a right-angle double-sided rack 265 transmitted between the first gear 263 and the second gear 264. The right-angle double-sided rack 265 includes a first rack 2651 and a second rack 2652 whose tooth surfaces are perpendicular to each other. The first rack 2651 meshes with the first gear 263, and the second rack 2652 meshes with the second gear 264. The pitch of the first rack 2651 is greater than the pitch of the second rack 2652. Because the pitch of the first rack 2651 is greater than the pitch of the second rack 2652 in the right-angle double-sided rack 265, the transmission ratio can be increased. If the magnitude of the locking force of the lock assembly is constant, the lock can be released by applying a relatively smaller force to the operating handle 300, thereby achieving a labor-saving effect.

[0039] As shown in Figures 4, 5, and 6, a straight chute 212 is provided at the bottom of the support leg head base 210, and the guiding direction of the straight chute 212 is parallel to the longitudinal direction of the first rack 2651. The right-angle double-sided rack 265 includes a rack slider 2653 that is slidably connected to the straight chute 212 along the guiding direction of the straight chute 212. A guide rod 267 is provided within the straight chute 212 and is fixedly connected to the support leg head base 210, with the axial direction of the guide rod 267 parallel to the longitudinal direction of the first rack 2651, and the rack slider 2653 is fitted around the outer circumference of the guide rod 267 and slidably connected to the guide rod 267.

[0040] As shown in Figures 4, 5, and 6, a return spring 266 is provided in the straight chute 212, and when the oscillating arm 262 is pulled by the traction wire 410 and rotates, the return spring 266 is compressed by the lux slider 2653 and stores elastic energy. A torsion spring 269 is fitted around the outer circumference of the rotating shaft 261, and the torsion spring 269 is located between the oscillating arm 262 and the side mounting seat 211. One end of the torsion spring 269 is connected to the side mounting seat 211 and the other end is connected to the oscillating arm 262, and when the oscillating arm 262 is pulled by the traction wire 410 and rotates, the torsion spring 269 is twisted and stores elastic energy. When the operating handle 300 is rotated to the unlocked state, the traction force applied to the traction wire 410 is released, the torsion spring 269 and the return spring 266 are released, and the internal drive shaft 251 and the external drive shaft 252 can be instantaneously driven to rotate, and the first lock assembly is instantaneously driven to lock the middle leg tube 222 and the front leg tube 221, and at the same time the first lock assembly is driven to lock the rear leg tube 223 and the middle leg tube 222, so that there is no obvious lock delay phenomenon in the locking process of the support leg 200.

[0041] As shown in Figures 4, 5, and 6, an arc-shaped stopper groove 211A is provided on one side of the side mounting seat 211, and the center of the arc-shaped stopper groove 211A is located on the axis of the rotation axis 261. A guide shaft 268 is fixed to one end of the swing arm 262, which is connected to the traction wire 410, and the axial direction of the guide shaft 268 is parallel to the axial direction of the rotation axis 261, with one end of the guide shaft 268 inserted into the arc-shaped stopper groove 211A. The engagement of the guide shaft 268 with the arc-shaped stopper groove 211A allows the swing arm 262 to swing in a predetermined direction and within a predetermined angular range.

[0042] As shown in Figure 7, the first lock assembly includes a first fixed sleeve 231, a first rotating sleeve 232, and a first sliding sleeve 233. Here, the first fixed sleeve 231 is fixedly connected inside the middle leg tube 222, with one end inserted into the front leg tube 221, and the outer wall of the first fixed sleeve 231 is provided with a first inclined tapered surface. The first rotating sleeve 232 is provided coaxially with the first fixed sleeve 231, and the first rotating sleeve 232 is held in a relative axial fixed position and relative circumferential rotation position with respect to the first fixed sleeve 231, and the first rotating sleeve 232 is fitted onto the outer circumference of the outer drive shaft 252 and held in a relative circumferential fixed position with respect to the outer drive shaft 252. The first sliding sleeve 233 is located inside the front leg tube 221, with a portion fitted onto the outer circumference of the first fixed sleeve 231, and the first sliding sleeve 233 is screwed onto the outer circumference of the first rotating sleeve 232. When the external drive shaft 252 moves the first rotating sleeve 232 and rotates it in the circumferential direction, one end of the first sliding sleeve 233 slides into the gap between the first fixed sleeve 231 and the front leg tube 221 and presses against the first inclined tapered surface of the first fixed sleeve 231 to lock the front leg tube 221 and the middle leg tube 222, or one end of the first sliding sleeve 233 slides out from the gap between the first fixed sleeve 231 and the front leg tube 221 and loosens the first inclined tapered surface of the first fixed sleeve 231 to unlock the front leg tube 221 and the middle leg tube 222.

[0043] As shown in Figure 7, a first ball 234 is fitted inside the first sliding sleeve 233, with a portion of the first ball 234 protruding from the inner wall surface of the first sliding sleeve 233 and contacting the first inclined tapered surface. Specifically, the first inclined tapered surface includes a first stage first inclined tapered surface 231A and a second stage first inclined tapered surface 231B, which are sequentially provided along the axial direction of the first fixed sleeve 231, and there are two first balls 234, the two first balls 234 contacting the first stage first inclined tapered surface 231A and the second stage first inclined tapered surface 231B, respectively. This structural configuration, in which the two stages of inclined tapered surfaces and the two balls engage, can improve the reliability of the lock.

[0044] As shown in Figure 7, the first lock assembly further includes a first stopper sleeve 235 located inside the front leg tube 221 and fitted and fixed to the outer circumference of the first rotating sleeve 232, the first stopper sleeve 235 located at one end of the first sliding sleeve 233 adjacent to the support leg head base 210, and a first elastic member 236 is provided between the first stopper sleeve 235 and the first sliding sleeve 233, the first elastic member 236 is used to provide a first eccentric load to the first sliding sleeve 233, and to better return the first sliding sleeve 233.

[0045] As shown in Figure 7, the first lock assembly includes a first fixed sleeve 231, a first rotating sleeve 232, and a first sliding sleeve 233. Here, the first fixed sleeve 231 is fixedly connected inside the middle leg tube 222, with one end inserted into the front leg tube 221, and the outer wall of the first fixed sleeve 231 is provided with a first inclined tapered surface. The first rotating sleeve 232 is provided coaxially with the first fixed sleeve 231, and the first rotating sleeve 232 is held in a relative axial fixed position and relative circumferential rotation position with respect to the first fixed sleeve 231, and the first rotating sleeve 232 is fitted onto the outer circumference of the outer drive shaft 252 and held in a relative circumferential fixed position with respect to the outer drive shaft 252. The first sliding sleeve 233 is located inside the front leg tube 221, with a portion fitted onto the outer circumference of the first fixed sleeve 231, and the first sliding sleeve 233 is screwed onto the outer circumference of the first rotating sleeve 232. When the external drive shaft 252 moves the first rotating sleeve 232 and rotates it in the circumferential direction, one end of the first sliding sleeve 233 slides into the gap between the first fixed sleeve 231 and the front leg tube 221 and presses against the first inclined tapered surface of the first fixed sleeve 231 to lock the front leg tube 221 and the middle leg tube 222, or one end of the first sliding sleeve 233 slides out from the gap between the first fixed sleeve 231 and the front leg tube 221 and loosens the first inclined tapered surface of the first fixed sleeve 231 to unlock the front leg tube 221 and the middle leg tube 222.

[0046] As shown in Figure 8, the second lock assembly includes a second fixed sleeve 241, a second rotating sleeve 242, and a second sliding sleeve 243. Here, the second fixed sleeve 241 is fixedly connected inside the rear leg tube 223 and one end is inserted into the middle leg tube 222, and the outer wall of the second fixed sleeve 241 is provided with a second inclined tapered surface. The second rotating sleeve 242 is provided coaxially with the second fixed sleeve 241 and is held in a relative axial fixed and relative circumferential rotation position with respect to the second fixed sleeve 241, and the second rotating sleeve 242 is fitted onto the outer circumference of the outer drive shaft 252 and is held in a relative circumferential fixed position with respect to the outer drive shaft 252. The second sliding sleeve 243 is located inside the middle leg tube 222 and a portion is fitted onto the outer circumference of the second fixed sleeve 241, and the second sliding sleeve 243 is screwed onto the outer circumference of the second rotating sleeve 242. When the external drive shaft 252 moves the second rotating sleeve 242 and rotates it in the circumferential direction, one end of the second sliding sleeve 243 slides into the gap between the second fixed sleeve 241 and the middle leg tube 222 and presses against the second inclined tapered surface of the second fixed sleeve 241, thereby locking the middle leg tube 222 and the rear leg tube 223, or one end of the second sliding sleeve 243 slides out from the gap between the second fixed sleeve 241 and the front leg tube 221 and loosens the second inclined tapered surface of the second fixed sleeve 241, thereby unlocking the middle leg tube 222 and the rear leg tube 223.

[0047] As shown in Figure 8, a second ball 244 is fitted inside the second sliding sleeve 243, with a portion of the second ball 244 protruding from the inner wall surface of the second sliding sleeve 243 and contacting the second inclined tapered surface. Specifically, the second inclined tapered surface includes a first stage second inclined tapered surface 241A and a second stage second inclined tapered surface 241B, which are sequentially provided along the axial direction of the second fixed sleeve 241, and there are two second balls 244, the two second balls 244 contacting the first stage second inclined tapered surface 241A and the second stage second inclined tapered surface 241B, respectively. This structural configuration, in which the two stages of inclined tapered surfaces and the two balls engage, can improve the reliability of the lock.

[0048] As shown in Figure 8, the second lock assembly further includes a second stopper sleeve 245 located inside the front leg tube 221 and fitted and fixed to the outer circumference of the second rotating sleeve 242, the second stopper sleeve 245 located at one end of the second sliding sleeve 243 adjacent to the support leg head base 210, and a second elastic member 246 is provided between the second stopper sleeve 245 and the second sliding sleeve 243, the second elastic member 246 is used to provide a second eccentric load to the second sliding sleeve 243, thereby better returning the second sliding sleeve 243.

[0049] As shown in Figures 4, 5, and 9, protective tubes 420 are fitted to the portions of the three tow wires 410 that extend from the support leg head base 210, and the three tow wires 410 are routed through the internal passages of the corresponding protective tubes 420. Specifically, the tow wires 410 can be made of steel wire similar to brake wire material, and the protective tubes 420 can reduce the frictional force when the tow wires 410 move through their internal passages, thereby improving the response speed after the tow wires 410 are pulled. A tube connection port is provided at one end of the protective tube 420 that is connected to the connection seat of the support leg head base 210. An annular cavity 101 is provided inside the mounting platform 100, positioned around the circumferential direction of the connecting head 110. Three protective tubes 420 are inserted into the annular cavity 101 from a bottom opening in the mounting platform 100, and after being routed around the annular cavity 101, they extend to the operating handle. The ends of the three protective tubes 420 that are separated from the support leg head base 210 are inserted into the interior of the operating handle 300 by passing through openings in the side wall of the mounting platform 100.

[0050] As shown in Figures 1 and 9, three support leg connection seats 120 are fixedly connected to the outer circumference of the mounting platform 100, and the three support legs 200 are each pivotally attached to the three support leg connection seats 120 on the outer circumference of the mounting platform 100.

[0051] As shown in Figures 1, 9 to 12, the operating handle 300 includes a handle shaft 310, a handle rotation sleeve 320, a handle sliding sleeve 330, a fixing pin 340, a handle hinge 350, a handle connection seat 360, and a handle lock knob 370. Here, the handle hinge 350 is fixedly connected to the outer circumference of the mounting platform 100, the inside of the handle hinge 350 is hollow, and three pull wires 410 extending from within three protective tubes 420 pass through the internal cavity of the handle hinge 350 and then extend to the movable chamber 311 of the handle shaft 310. The handle connection seat 360 is fixedly connected to one end of the handle shaft 310 adjacent to the handle hinge 350, the handle connection seat 360 is rotatably connected to the handle hinge 350 around the hinge axis, and a handle lock knob 370 for locking the handle connection seat 360 and the handle hinge 350 is connected to the hinge axis. The handle lock knob 370 is used to adjust the angle of the operating handle 300.

[0052] As shown in Figures 1, 9 to 12, one end of the handle shaft 310 is fixedly connected to the handle connection seat 360, and a movable chamber 311 is provided inside the handle shaft 310. A through chute 312 is provided on the handle shaft 310, passing through the handle shaft 310 radially and extending along its own axial direction. The handle rotation sleeve 320 is fitted onto the outer circumference of the handle shaft 310, and the handle rotation sleeve 320 is held in a position that is fixed in the axial direction relative to the handle shaft 310 and rotatable in the circumferential direction relative to the handle shaft 310. The handle sliding sleeve 330 is slidably fitted onto the outer circumference of the handle shaft 310 along its axial direction, and the handle sliding sleeve 330 is screwed onto the inner wall of the handle rotation sleeve 320. The fixing pin 340 is fixedly connected to the handle sliding sleeve 330 and slidably connected to the through chute 312 along the axial direction of the handle shaft 310, and the three tow wires 410 are fixedly connected to the fixing pin 340 via the movable chamber 311 of the handle shaft 310. The fixing pin 340 is provided with three threading holes for passing the tow wires 410 through, and the stopper ends of the tow wires 410, which have an outer diameter larger than the threading holes and abut against the fixing pin 340, are connected to the tow wires 410. The handle shaft 310 and the handle rotation sleeve 320 constitute the fixed part of the operating handle 300, and the handle sliding sleeve 330 and the fixing pin 340 constitute the moving part of the operating handle 300.

[0053] As shown in Figures 9 to 12, a pair of stopper ribs 313 are provided on the outer wall of the handle shaft 310, with the longitudinal direction of the pair of stopper ribs 313 extending along the axial direction of the handle shaft 310, and a stopper groove is provided on the inner wall of the handle sliding sleeve 330 that slides and engages with the stopper ribs 313.

[0054] As described above, the one-touch operated support stand provided in this invention has one end of the traction wire 410 connected to the gear transmission assembly of the support leg 200, and when the traction wire 410 is pulled, it moves the leg tube lock assembly via the gear transmission assembly and the transmission shaft assembly to lock or loosen the multiple leg tubes of the leg tube assembly 220, and at the same time the other ends of the traction wires 410 connected to each of the three support legs 200 are all connected to the operating handle 300, and when the operating handle 300 is operated, the operating handle 300 can apply traction force to at least three traction wires 410 at the same time, and can also achieve simultaneous locking or unlocking of the three support legs 200, and can achieve one-touch release and one-touch fixing of the three support legs 200, making operation easier and effectively improving the extension and retraction speed of the support legs 200. Compared to conventional one-touch operation support stands employing an electrically controlled operating handle, this product does not require charging, eliminating the need to carry extra equipment such as chargers and portable power supplies, resulting in superior portability. Compared to conventional one-touch operation support stands employing a hydraulically driven handle, it achieves instantaneous locking without any lock delay phenomenon. In the gear transmission assembly, the pitch of the first rack 2651 is larger than the pitch of the second rack 2652, allowing for a larger transmission ratio. When the magnitude of the locking force of the lock assembly is constant, unlocking can be achieved by applying a relatively smaller force to the operating handle 300, resulting in labor savings. When the operating handle 300 is rotated to the unlocked state, the torsion spring 269 and return spring 266 are released, instantly driving and rotating the transmission shaft assembly. Furthermore, the leg tube lock assembly is instantly driven to lock multiple leg tubes, and there is no noticeable lock delay phenomenon.

[0055] Naturally, the above embodiments are illustrative for illustrative purposes only and do not limit the embodiments. Those skilled in the art can make other different forms of modifications or variations based on the above description. It is impossible and unnecessary to comprehensively list all embodiments here. Any obvious modifications or variations derived therefrom still fall within the scope of the present invention. [Explanation of Symbols]

[0056] 100, mounting platform, 101, annular cavity, 110, connecting head, 120, support leg connection seat, 200, supporting leg; 210, support leg head base, 211, side mounting seat, 211A, arc-shaped stopper groove, 212, straight chute, 213, bearing, 220, leg tube assembly, 221, front leg tube, 222, middle leg tube, 223, rear leg tube, 231, First fixed sleeve, 231A, First inclined tapered surface of the first stage, 231B, First inclined tapered surface of the second stage, 232, First rotating sleeve, 233, First sliding sleeve, 234, First ball, 235, First stopper sleeve, 236, First elastic member, 241, second fixed sleeve, 241A, first stage second inclined tapered surface, 241B, second stage second inclined tapered surface, 242, second rotating sleeve, 243, second sliding sleeve, 244, second ball, 245, second stopper sleeve, 246, second elastic member, 251, internal transmission shaft, 252, external transmission shaft, 261, Rotating shaft, 262, Swiveling arm, 263, First gear, 264, Second gear, 265, Right-angle double-sided rack, 2651, First rack, 2652, Second rack, 2653, Lux slider, 266, Return spring, 267, Guide rod, 268, Guide shaft, 269, Torsion spring, 300, operating handle, 310, handle shaft, 311, movable chamber, 312, through chute, 313, stopper rib, 320, handle rotation sleeve, 330, handle sliding sleeve, 340, fixing pin, 350, handle hinge, 360, handle connection seat, 370, handle lock knob, 410, towing wire, 420, protective tube.

Claims

1. A one-touch operated support stand comprising a mounting platform (100), at least three support legs (200) with one end connected to the mounting platform (100), and an operating handle (300) connected to the mounting platform (100), wherein each of the support legs (200) is A support leg head base (210) is connected at one end to the mounting platform (100), A leg tube assembly (220) comprising multiple stages of leg tubes that are sequentially arranged from the outside to the inside and are extendable in the axial direction, wherein one end of the leg tube located in the outermost layer is fixedly connected to the support leg head base (210), A leg tube locking assembly located within the support leg (200) and used to lock or unlock multiple stages of the leg tubes, A transmission shaft assembly located on the support leg (200) and rotatable around its own axial direction, wherein the transmission shaft assembly is transmitted to the leg tube lock assembly, A gear transmission assembly, which is attached to the support leg head base (210) and whose power output end is connected to the transmission shaft assembly, A towing wire (410) is connected to the power input end of the gear transmission assembly, and the towing wire (410) drives the leg tube lock assembly via the gear transmission assembly and the transmission shaft assembly to lock or unlock it. A one-touch operated support stand, characterized in that at least three of the towing wires (410) extend from the support leg head base (210) and are each connected to the operating handle (300), the operating handle (300) is used to apply a traction force to at least three of the towing wires (410) simultaneously.

2. The gear transmission assembly is mounted inside the support leg head base (210), and the gear transmission assembly is, A rotating shaft (261) is connected to the aforementioned support leg head base (210) and is provided to be rotatable around its own axial direction, A swing arm (262) is fixedly connected at one end to the rotating shaft (261) and at the other end to the traction wire (410), A first gear (263) is fixedly fitted to the rotating shaft (261) and rotates in sync with the rotation of the oscillating arm (262), A second gear (264) is connected to the support leg head base (210) and fixedly connected coaxially with the transmission shaft assembly, and the second gear (264) is transmitted to the first gear (263), The one-touch operated support stand according to claim 1, characterized in that when the towing wire (410) is pulled, the swing arm (262), the rotating shaft (261), and the first gear (263) move to rotate the rotating shaft (261) around its axial direction, and the first gear (263) moves the second gear (264) and the transmission shaft assembly to rotate around its own axial direction.

3. The gear transmission assembly further includes a right-angle double-sided rack (265) transmitted between the first gear (263) and the second gear (264), wherein the right-angle double-sided rack (265) includes a first rack (2651) and a second rack (2652) whose tooth surfaces are perpendicular to each other, the first rack (2651) meshes with the first gear (263), and the second rack (2652) meshes with the second gear (264), characterized in that the one-touch operated support stand according to claim 2.

4. The one-touch operated support stand according to claim 3, characterized in that the pitch of the first rack (2651) is greater than the pitch of the second rack (2652).

5. A one-touch operated support stand according to claim 3, characterized in that a straight chute (212) is provided at the bottom of the support leg head base (210), the guiding direction of the straight chute (212) is parallel to the longitudinal direction of the first rack (2651), and the right-angle double-sided rack (265) includes a rack slider (2653) that is slidably connected to the straight chute (212) along the guiding direction of the straight chute (212).

6. A one-touch operated support stand according to claim 5, characterized in that a return spring (266) is provided in the linear chute (212), and when the oscillating arm (262) is pulled by the traction wire (410) and rotates, the return spring (266) is compressed by the lux slider (2653) and stores elastic energy.

7. A one-touch operated support stand according to claim 5, characterized in that a guide rod (267) fixedly connected to the support leg head base (210) is provided within the straight chute (212), the axial direction of the guide rod (267) is parallel to the longitudinal direction of the first rack (2651), and the rack slider (2653) is fitted onto the outer circumference of the guide rod (267) and slidably connected to the guide rod (267).

8. A one-touch operated support stand according to claim 2, characterized in that a side mounting seat (211) is fixedly connected to the inner wall of the support leg head base (210), one end of the rotating shaft (261) is connected to the side mounting seat (211), an arc-shaped stopper groove (211A) is provided in the side mounting seat (211), the center of the arc-shaped stopper groove (211A) is located on the axis of the rotating shaft (261), a guide shaft (268) is fixed to one end of the swing arm (262) connected to the traction wire (410), the axial direction of the guide shaft (268) is parallel to the axial direction of the rotating shaft (261), and one end of the guide shaft (268) is inserted into the arc-shaped stopper groove (211A).

9. The gear transmission assembly further includes a torsion spring (269) fitted around the outer circumference of the rotating shaft (261), the torsion spring (269) being positioned between the oscillating arm (262) and the side mounting seat (211), one end of the torsion spring (269) being connected to the side mounting seat (211) and the other end being connected to the oscillating arm (262), and when the oscillating arm (262) is pulled and rotated by the traction wire (410), the torsion spring (269) is twisted and stores elastic energy, characterized in that the one-touch operated support stand according to claim 8.

10. A one-touch operated support stand according to claim 1, characterized in that a connection head (110) for attaching a photographic device is provided in the center of the mounting platform (100), an annular cavity (101) is provided inside the mounting platform (100) around the connection head (110) in the circumferential direction, a plurality of protective tubes (420) are routed inside the annular cavity (101), one end of the plurality of protective tubes (420) is led out from the mounting platform (100) and connected to the operating handle (300), the other ends of the plurality of protective tubes (420) are led out from the mounting platform (100) and connected to a plurality of support leg head bases (210), and a plurality of traction wires (410) are routed through internal passages of the plurality of protective tubes (420).

11. The leg tube assembly (220) includes a front leg tube (221), a middle leg tube (222), and a rear leg tube (223) that are sequentially provided from the outside to the inside and are extendable in the axial direction, and the front leg tube (221), middle leg tube (222), and rear leg tube (223) are held in a relative circumferential position. The leg tube lock assembly includes a first lock assembly installed between the front leg tube (221) and the middle leg tube (222), and a second lock assembly installed between the middle leg tube (222) and the rear leg tube (223). The one-touch operated support stand according to claim 1, wherein the transmission shaft assembly includes an internal transmission shaft (251) with one end fixedly connected to the power output end of the gear transmission assembly, and an external transmission shaft (252) fitted around the outer circumference of the internal transmission shaft (251) and held relative to the internal transmission shaft (251) in a circumferentially fixed and relative to axially sliding manner, wherein the external transmission shaft (252) is operably connected to a first lock assembly to releasely prevent the movement of the middle leg tube (222) relative to the front leg tube (221), and the external transmission shaft (252) is operably connected to a second lock assembly to releasely prevent the movement of the rear leg tube (223) relative to the middle leg tube (222).

12. The first lock assembly is A first fixing sleeve (231) is fixedly connected to the middle leg tube (222), with one end inserted into the front leg tube (221), and a first inclined tapered surface is provided on the outer wall of the first fixing sleeve (231), A first rotating sleeve (232) is provided coaxially with the first fixed sleeve (231) and is held in a relative axial fixed position and relative circumferential rotation position with respect to the first fixed sleeve (231), and the first rotating sleeve (232) is fitted onto the outer circumference of the external transmission shaft (252) and is held in a relative circumferential fixed position with respect to the external transmission shaft (252), The first sliding sleeve (233) is located inside the front leg tube (221) and at least a portion of it is fitted onto the outer circumference of the first fixed sleeve (231), and the first sliding sleeve (233) is screwed onto the outer circumference of the first rotating sleeve (232), The one-touch operated support stand according to claim 11, characterized in that when the external drive shaft (252) moves the first rotating sleeve (232) to rotate it in the circumferential direction, one end of the first sliding sleeve (233) slides into the gap between the first fixed sleeve (231) and the front leg tube (221) and presses against the first inclined tapered surface of the first fixed sleeve (231) to lock the front leg tube (221) and the middle leg tube (222), or one end of the first sliding sleeve (233) slides out from the gap between the first fixed sleeve (231) and the front leg tube (221) and loosens the first inclined tapered surface of the first fixed sleeve (231) to unlock the front leg tube (221) and the middle leg tube (222).

13. A one-touch operated support stand according to claim 12, characterized in that a first ball (234) is fitted inside the first sliding sleeve (233), and a part of the first ball (234) protrudes from the inner wall surface of the first sliding sleeve (233) and contacts the first inclined tapered surface.

14. The one-touch operated support stand according to claim 13, characterized in that the first inclined tapered surface includes a first inclined tapered surface (231A) and a second inclined tapered surface (231B) which are sequentially provided along the axial direction of the first fixed sleeve (231), and there are two first balls (234), the two first balls (234) contact the first inclined tapered surface (231A) and the second inclined tapered surface (231B), respectively.

15. The one-touch operated support stand according to claim 12, characterized in that the first lock assembly further includes a first stopper sleeve (235) located inside the front leg tube (221) and fitted and fixed to the outer circumference of the first rotating sleeve (232), the first stopper sleeve (235) being located at one end of the first sliding sleeve (233) adjacent to the support leg head base (210), and a first elastic member (236) being provided between the first stopper sleeve (235) and the first sliding sleeve (233).

16. The one-touch operated support stand according to claim 12, characterized in that the structure of the second lock assembly is the same as the structure of the first lock assembly.

17. The one-touch operated support stand according to any one of claims 1 to 16, characterized in that the operating handle (300) includes an operating unit connected to the mounting platform (100) and a moving unit driven by the operating unit, and at least three of the traction wires (410) extend from the support leg head base (210) and are all connected to the moving unit.

18. The aforementioned operating unit is A handle shaft (310) having one end connected to the mounting platform (100), a movable chamber (311) provided inside the handle shaft (310), and a through chute (312) provided that passes through the handle shaft (310) radially and extends along its own axial direction, A handle rotation sleeve (320) is fitted onto the outer circumference of the handle shaft (310) and is held in a position to be fixed in the axial direction relative to the handle shaft (310) and to be rotated in the circumferential direction relative to the handle shaft (310), The aforementioned sports club, A handle sliding sleeve (330) is slidably fitted onto the outer circumference of the handle shaft (310) along the axial direction of the handle shaft (310), and is screwed to the inner wall of the handle rotating sleeve (320), A one-touch operated support stand according to claim 17, further comprising a fixing pin (340) which is fixedly connected to the handle sliding sleeve (330) and slidably connected to the through chute (312) along the axial direction of the handle shaft (310), and a plurality of the towing wires (410) are fixedly connected to the fixing pin (340) through the internal cavity of the handle shaft (310).

19. The one-touch operated support stand according to claim 18, characterized in that the fixing pin (340) is provided with a plurality of thread-threading holes for passing the traction wire (410), and the traction wire (410) is provided with a stopper tip of the traction wire (410) whose outer diameter is larger than that of the thread-threading holes and which abuts against the fixing pin (340).

20. A one-touch operated support stand according to claim 19, characterized in that a stopper rib (313) is provided on the outer wall of the handle shaft (310) that protrudes outward, the longitudinal direction of the stopper rib (313) extends along the axial direction of the handle shaft (310), and a stopper groove is provided on the inner wall of the handle sliding sleeve (330) that slidably engages with the stopper rib (313).

21. A one-touch operated support stand according to 19, characterized in that a handle hinge (350) is fixedly connected to the outer circumference of the mounting platform (100), the operating handle (300) includes a handle connection seat (360) fixedly connected to one end of the handle shaft (310) adjacent to the handle hinge (350), the handle connection seat (360) is rotatably connected to the handle hinge (350) around the hinge shaft, and a handle lock knob (370) for locking the handle connection seat (360) and the handle hinge (350) is connected to the hinge shaft.

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