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JP-3255768-U - One-touch operation support stand

JP3255768UJP 3255768 UJP3255768 UJP 3255768UJP-3255768-U

Abstract

[Problem] To provide a one-touch operated support stand that is easy to use, has a fast extension/retraction speed, and can achieve instantaneous locking. [Solution] The system includes a mounting platform 100, a plurality of support legs 200, and an operating handle 300. Each support leg includes a support leg head base 210, a plurality of leg tubes that are axially extendable from the outside to the inside, a leg tube locking assembly for locking or unlocking the plurality of 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. A plurality of traction wires are connected to the operating handle, and each of the 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 the three traction wires simultaneously. The operating handle can apply traction force to the 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. [Selection Diagram] Figure 1

Inventors

  • リ，ジェ
  • ヘイ，チウ

Assignees

  • 広東思鋭光学股▲ふん▼有限公司

Dates

Publication Date
20260508
Application Date
20260306
Priority Date
20260209

Claims (20)

  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 transmitted 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) meshing with the first gear (263), and the second rack (2652) meshing with the second gear (264), characterized in that this is 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) 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 within the linear chute (212), and when the oscillating arm (262) is pulled and rotated by the traction wire (410), the return spring (266) is compressed by the lux slider (2653) to store 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 linear 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), with one end of the torsion spring (269) connected to the side mounting seat (211) and the other end 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) twists and stores elastic energy, characterized in that this is the one-touch operation support stand according to claim 8.
  10. The one-touch operated support stand according to claim 1, characterized in that the mounting platform (100) is provided with a centrally located connecting head (110) for attaching photographic equipment, an annular cavity (101) is provided inside the mounting platform (100) around the circumferential direction of the connecting head (110), a plurality of protective tubes (420) are routed within the annular cavity (101), one end of each of the protective tubes (420) is led out from the mounting platform (100) and connected to the operating handle (300), the other ends of the protective tubes (420) are led out from the mounting platform (100) and connected to each of the support leg head bases (210), and a plurality of traction wires (410) are routed through internal passages of each of the 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 portion 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-stage inclined tapered surface (231A) and a second-stage inclined tapered surface (231B) 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 inclined tapered surface (231A) and the second-stage inclined tapered surface (231B), respectively.
  15. The one-touch operated support stand according to claim 12, further comprising 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), wherein the first stopper sleeve (235) is 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).
  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 operation 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 towing wire (410), and the towing wire (410) is provided with a stopper tip of the towing wire (410) whose outer diameter is larger than that of the thread-threading holes and which abuts against the fixing pin (340).
  20. The one-touch operation support stand according to claim 19, characterized in that a stopper rib (313) is provided on the outer wall of the handle shaft (310) and 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).

Description

This invention relates to the technical field of photographic support equipment, and more specifically, to a one-touch operated support stand. The support stand for photography primarily consists of a mounting platform and a three-legged assembly with one end pivotally attached to the mounting platform. The mounting platform is used to mount photographic equipment such as cameras. Each support leg assembly includes multiple retractable support leg tubes, with a locking mechanism between two adjacent tubes. Each locking mechanism has an independent lock/unlock switch. To extend all the support leg tubes on the assembly, two sets of lock/unlock switches must be turned on. To extend the entire support stand, six lock/unlock switches must be turned on, resulting in extremely poor usability. To address the cumbersome locking/unlocking operation of conventional support stands, a control handle is positioned on the support stand's mounting platform. This allows the user to one-touch locking and unlocking of the three support leg assemblies. In the locked state, all three support leg assemblies are immobile; in the unlocked state, the user can adjust the support height by manipulating the leg assemblies. In some one-touch locking support stands, the control handle is a hydraulically driven handle, with a hydraulic cylinder housed within it. A piston cylinder and piston rod are located inside the support leg assembly. The locking mechanism between two adjacent support leg tubes is fixedly connected to the piston rod. 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, causing it to move and lock/unlock between two adjacent support leg tubes. However, in support stands locked by hydraulic drive, a certain amount of time is required for the hydraulic fluid to flow through the oil pipes. Therefore, instantaneous locking of two adjacent support leg tubes cannot be achieved, resulting in a locking delay phenomenon, and there is still room for improvement. 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. This is a schematic diagram of the three-dimensional structure of a one-touch operated support stand in an embodiment of the present invention. This is a schematic diagram of the three-dimensional structure of the support leg in an embodiment of the present invention. This is a cross-sectional view of the support leg in an embodiment of the present invention. This is an enlarged view of section A in Figure 3. This is a schematic diagram of the three-dimensional structure of a gear transmission assembly in an embodiment of the present invention. 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. This is an enlarged view of section B in Figure 3. This is an enlarged view of section C in Figure 3. 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. This is a schematic diagram of the three-dimensional structure of the operating handle in an embodiment of the present invention. This is a cross-sectional view of the operating handle in an embodiment of the present invention. This is a schematic diagram showing the connection relationship between the handle shaft and the fixing pin in an embodiment of the present invention. The following clearly and completely describes the technical solutions of this invention with reference to the drawings. Clearly, the described embodiments are only some, not all, embodiments of this invention. All other embodiments derived from the embodiments of this invention, without the creative work of those skilled in the art, are all within the scope of this invention. In this description of the present 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. These terms are used solely to facilitate and simplify the explanation of the present invention. They do not indicate or suggest that the device or element has a specific direction, or that it must be constructed and operated in a specific direction; therefore, they should not be understood as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used solely for ex