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EP-4571169-B1 - ANGLE ADJUSTMENT DEVICE FOR LIGHTING SOFTBOX

EP4571169B1EP 4571169 B1EP4571169 B1EP 4571169B1EP-4571169-B1

Inventors

  • LIAO, TSUN-CHI

Dates

Publication Date
20260506
Application Date
20231212

Claims (10)

  1. An angle adjustment device for a lighting softbox, comprising: an operating device (10), comprising a rotary crank (11), an inclined crank (12), a rotary transmission assembly (13) and an inclined transmission assembly (14), wherein the rotary transmission assembly (13) and the inclined transmission assembly (14) being driven by the rotary crank (11) and the inclined crank (12) to be rotatable around an axial direction respectively; a first connecting rod (20), provided with a first outer tube (21), a first inner tube (22) positioned in the first outer tube (21), and a first inner rod (23) positioned in the first inner tube (22), one end of the first outer tube (21) being linked and fixed to the operating device (10), one end of the first inner tube (22) being provided with a first non-circular fixing base (24), the first non-circular fixing base (24) being provided with a first fixing portion (241) for fixing the first inner tube (22) and matching an inner diameter of the first outer tube (21) by an outer diameter thereof, and a first non-circular fixing tube (242) connected to the first fixing portion (241), an outer diameter of the first non-circular fixing tube (242) is smaller than the first fixing portion (241), the rotary transmission assembly (13) being in transmission connection to the first non-circular fixing tube (242), the inclined transmission assembly (14) being in transmission connection to the first inner rod (23), the other end of the first inner tube (22) being provided with a clamping fixing base (25), and the clamping fixing base (25) being provided with a clamping fixing portion (251) for fixing the first inner tube (22) and a clamping non-circular fixing tube (252) connected to the clamping fixing portion (251) and matched with the inner diameter of the first outer tube (21) by an outer diameter thereof.; a second connecting rod (30), provided with a second outer tube (31), a second inner tube (32) positioned in the second outer tube (31), and a second inner rod (33) positioned in the second inner tube (32), one end of the second inner tube (32) being provided with a second non-circular fixing base (34), the second non-circular fixing base (34) being provided with a second fixing portion (341) for fixing the second inner tube (32) and matching with an inner diameter of the second outer tube (31) by an outer diameter thereof, and a second non-circular fixing tube (342) connected to the second fixing portion (341) and an outer diameter of the second non-circular fixing tube (342) is smaller than the second fixing portion (341), the clamping non-circular fixing tube (252) being in transmission connection to the second non-circular fixing tube (342), the first inner rod (23) being transmission connection to the second inner rod (33), and the other end of the first outer tube (21) being linked and fixed to one end of the second outer tube (31); and a controlled device (40), provided with a rotary portion (41), an inclined portion (42) pivoted to the rotary portion (41), a mounting column (43) disposed on the inclined portion (42), an outer tube fixing base (44) and a plurality of screw positioning beads (45), the second inner tube (32) being fixed to the rotary portion (41), the second inner rod (33) being in transmission connection to the inclined portion (42) to drive the inclined portion (42) to rotate around a direction perpendicular to the axial direction of the rotary portion (41), and the plurality of screw positioning beads (45) surrounding the outer tube fixing base (44) and passing through the outer tube fixing base (44) and the second outer tube (31), and the plurality of screw positioning beads (45) abutting against the rotary portion (41).
  2. The angle adjustment device of claim 1, wherein the first fixing portion (241) is fixed to the first inner tube (22) by a plurality of bolts (70) passing through thereof, and the second fixing portion (341) is fixed to the second inner tube (32) by a plurality of bolts (73) passing through thereof.
  3. The angle adjustment device of claim 1 or 2, wherein the first outer tube (21) is erected on an angle adjustment base (50).
  4. The angle adjustment device of any of the claims 1 to 3, wherein the clamping fixing portion (251) is fixed to an extension tube (26), and then the extension tube (26) is fixed to the other end of the first inner tube (22).
  5. The angle adjustment device of claim 4, wherein the clamping fixing portion (251) is fixed to the extension tube (26) by a plurality of bolts (71) passing through thereof, and the extension tube (26) is fixed to the first inner tube (22) by a plurality of bolts (72) passing through thereof.
  6. The angle adjustment device of any of the claims 1 to 5, wherein a junction of the rotary transmission assembly (13) and the first non-circular fixing tube (242), and a junction of the clamping non-circular fixing tube (252) and the second non-circular fixing tube (342) are cross-shaped tubular side ends that matched with each other in size and contour.
  7. The angle adjustment device of any of the claims 1 to 6, wherein a junction of the inclined transmission assembly (14) and the first inner rod (23), and a junction of the first inner rod (23) and the second inner rod (33) are a square rod side end and a square sleeve side end that matched with each other.
  8. The angle adjustment device of any of the claims 1 to 7, wherein the first outer tube (21) and the second outer tube (22) penetrate into two sides of a tube sleeve (60) respectively, and are fixed to the tube sleeve (60) by a fixing screw (601) and a thumb screw (602) respectively.
  9. The angle adjustment device of claim 8, wherein the first outer tube (21) and the second outer tube (22) are sleeved and fixed with a limiting sleeve (61, 62) respectively, and the two limiting sleeves (61, 62) are adjacent to two sides of the tube sleeve (60).
  10. The angle adjustment device of any of the claims 1 to 9, wherein the plurality of screw positioning beads (45) comprise a screw (451) and a steel bead (452) positioned at a front end of the screw (451), the steel bead (452) has a universal rotational degree of freedom, and abuts against the rotary portion (41).

Description

FIELD OF THE INVENTION The present invention relates to an angle adjustment device, and more particularly relates to an angle adjustment device for a lighting softbox. BACKGROUND OF THE INVENTION A lighting softbox angle adjustment device, such as the commercially available product Superboom with Column Stand-025TM produced by Manfrotto, is provided with a long rod to be erected on a bipod, the long rod is respectively provided with an operating device and a controlled device at two ends of the bipod, the controlled device is used for erecting a lighting softbox, while the operating device is provided with two cranks, and the two cranks can be rotated to respectively change an axial inclination angle and an axial rotation angle in a transmission way. In order to increase an effective irradiation range of the lighting softbox, a design specification of the long rod is often greater than 3 meters, which causes trouble for a user due to the inability to transport the long rod by an ordinary sedan. SUMMARY OF THE INVENTION The main object of the present invention is to disclose an angle adjustment device for a lighting softbox that can be disassembled into a first connecting rod and a second connecting rod which are originally connected in series, so as to shorten a length thereof to be transported by an ordinary sedan. In order to achieve the above object, the present invention relates to an angle adjustment device for a lighting softbox, including an operating device, a first connecting rod, a second connecting rod, and a controlled device, wherein the operating device is provided with a rotary crank, an inclined crank, a rotary transmission assembly and an inclined transmission assembly, and the rotary transmission assembly and the inclined transmission assembly are driven by the rotary crank and the inclined crank to be rotatable around an axial direction respectively. The first connecting rod is provided with a first outer tube, a first inner tube and a first inner rod, wherein one end of the first outer tube is linked and fixed to the operating device, the first inner tube is positioned in the first outer tube, the first inner rod is positioned in the first inner tube, one end of the first inner tube is provided with a first non-circular fixing base, the first non-circular fixing base is provided with a first fixing portion for fixing the first inner tube and matching an inner diameter of the first outer tube by an outer diameter thereof, and a first non-circular fixing tube connected to the first fixing portion, and an outer diameter of the first non-circular fixing tube is smaller than the first fixing portion, the rotary transmission assembly is in transmission connection to the first non-circular fixing tube, the inclined transmission assembly is in transmission connection to the first inner rod, the other end of the first inner tube is provided with a clamping fixing base, and the clamping fixing base is provided with a clamping fixing portion for fixing the first inner tube and a clamping non-circular fixing tube connected to the clamping fixing portion and matched with the inner diameter of the first outer tube by an outer diameter thereof. The second connecting rod is provided with a second outer tube, a second inner tube and a second inner rod, wherein the second inner tube is positioned in the second outer tube, the second inner rod is positioned in the second inner tube, one end of the second inner tube is provided with a second non-circular fixing base, the second non-circular fixing base is provided with a second fixing portion for fixing the second inner tube and matching with an inner diameter of the second outer tube by an outer diameter thereof, and a second non-circular fixing tube connected to the second fixing portion and an outer diameter of the second non-circular fixing tube is smaller than the second fixing portion, the clamping non-circular fixing tube is in transmission connection to the second non-circular fixing tube, the first inner rod is in transmission connection to the second inner rod, and the other end of the first outer tube is linked and fixed to one end of the second outer tube. The controlled device is provided with a rotary portion, an inclined portion, a mounting column, an outer tube fixing base and a plurality of screw positioning beads, wherein the inclined portion is pivoted to the rotary portion, the mounting column is disposed on the inclined portion, the second inner tube is fixed to the rotary portion, so as to enable the second inner tube and the rotary portion to synchronously rotate in an axial direction, the second inner rod is in transmission connection to the inclined portion to drive the inclined portion to rotate around a direction perpendicular to the axial direction of the rotary portion, and the plurality of screw positioning beads surround the outer tube fixing base and pass through the outer tube fixing base and the second outer tube, and the p