A clamping seat of the telescopic rod comprises a pipe seat, a movable clamp and a fixed clamp. The pipe seat comprises an inner pipe space and an outer pipe space to insert the inner pipe and the outer pipe. The pipe seat comprises a side opening beside the inner pipe space and a side space beside the outer pipe space. The movable clamp comprises an arc block beside the side opening, and a screwing member pressing the arc block into the inner pipe space then to press and fix the inner pipe. The fixed clamp comprises a clamping plate in the side space, and a tightening bolt pressing the pipe seat against the clamping plate, allowing the clamping plate to press the outer pipe. Accordingly, the arc block and the clamping plate contact the pipes in a large area to avoid local deformation and prevent damaged together.

A foldable display stand includes a leg unit and two support arm assemblies. The leg unit includes two leg tubes. Each of the support arm assemblies includes a support arm, and is convertible among a storage state where the support arm is substantially retracted into a respective one of the leg tubes, a projecting state where the support arm substantially projects out of the respective leg tube and where the support arm extends along an extending axis of the respective leg tube, and a display state where the support arm extends in a direction transverse to the direction of the extending axis of the respective leg tube.

A supporting device includes a bottom seat with a first positioning member, a first supporting frame pivotally connected with the bottom seat, a second supporting frame, a third supporting frame pivotally connected with the first supporting frame and a fourth supporting frame to be coupled with a supported object. The second supporting frame is pivotally connected with the first supporting frame so as to change a height as a result of an angle of the first supporting frame relative to the bottom seat. The second supporting frame has a second positioning member to be coupled with the first positioning member in order to fix the first and second supporting frames. The fourth supporting frame is pivotally connected with the second and third supporting frame so that an angle and a height of the supported object are simultaneously changed with a pivoting motion of the first, second, third and fourth supporting frames.

A fixing bracket for a photographing device includes a rod member, a sliding member, and a plurality of supporting feet. The sliding member is slidably sleeved on an outer surface of the rod member, top ends of the plurality of supporting feet are hinged to the sliding member, and the supporting feet are swingable with respect to the sliding member, at least one limiting protrusion is disposed on the outer surface of the rod member close to a bottom end of the rod member, the at least one limiting protrusion is configured to block the sliding member or the supporting feet from sliding towards the bottom end of the rod member, the at least one limiting protrusion is disposed between the sliding member and the bottom end of the rod member. When the sliding member slides towards the bottom end of the rod member, the supporting feet are gradually unfolded.

A tripod stabilizing base consists of a containing envelope incorporating stabilizing mass elements and tripod foot attachment components. The tripod stabilizing base also includes a force transmitting member arranged such that the force transmitting member transmits forces from the tripod foot attachment components to the stabilizing mass elements, thus allowing the stabilizing mass elements to compensate for imbalance regarding the forces acting on the individual tripod foot attachment components, keeping the mounted tripod from tipping over due to an imbalanced payload.

A holder includes a body defining two prongs joined with each other at proximal ends thereof, each prong from two prongs has a distal end. The holder defines a hollow interior defined by the two prongs and an opening between distal ends, the opening being in an open communication with the hollow interior. A pivot is provided on a distal end of one prong from the two prongs. A protrusion is provided on a distal end of another prong from the two prongs. A rigid retainer may be provided in a pivot connection at the pivot and in a detachable connection at the protrusion. The holder may be designed with a pivot to independently pivot about a mounting member in each of a vertical and a horizontal plane.

A bracket that includes a fixing seat and three supporting assemblies is provided. The fixing seat includes three engaging portions, each of which includes multiple first engaging structures. Each supporting assembly includes a fixing assembly, a sliding member, and an engaging member. One end of the fixing assembly is pivotally connected to the engaging portion. The sliding member is sleeved around an outer periphery of the fixing assembly. The engaging member is connected to the fixing assembly. When the sliding member slides relative to the fixing assembly, the sliding member can push against the engaging member, such that a second engaging structure of the engaging member is engaged with the first engaging structure. Further, a second retaining structure of the sliding member can be engaged with a first retaining structure of the fixing assembly for limiting a movement range of the engaging member and the fixing assembly.

The present invention provides a hexagonal frustum deployable unit and the deployable mechanism formed by the same, which includes hexagonal frustum deployable units, unit connecting rods and support frames, 3N.sup.2+3N+1 hexagonal frustum deployable units are combined into a closely connected deployable mechanism through unit connecting rods and support frames; the present invention combines hexagonal frustum deployable units array into deployable mechanisms of any aperture size, which has advantages such as high rigidity, high retraction rate, high support performance and adjustable aperture size, which makes space deployable antenna mechanism safer, more efficient and convenient during operation process and solves problems of weak signal transmission or reception, small data capacity and low communication rate of traditional antennas.

An assembling structure for a rod to be fixed or detached with a stand is provided, which includes an upper clamp element, a lower clamp element, and a bushing. The upper clamp element and the lower clamp element include an upper clamping space and a lower clamping space respectively. The shapes thereof correspond to the rod to tightly clamp the rod onto the stand. The lower clamp element includes a positioning structure that holds up the stand. The bushing is located between the upper clamp element and the stand body, so that the rod can be quickly pulled out from the upper and lower clamping space with less friction after the upper clamp element and the lower clamp element are loosened. When re-inserted, the rod is positioned through being held up by the positioning structure to meet the usage needs of fast withdrawal or positioning the rod.

A clamping seat includes a pipe seat, a movable clamp and a fixed clamp. The pipe seat includes an inner pipe space and an outer pipe space to insert the inner pipe and the outer pipe. The pipe seat includes a side opening beside the inner pipe space and a side space beside the outer pipe space. The movable clamp includes an arc block beside the side opening, and a screwing member pressing the arc block into the inner pipe space then to press and fix the inner pipe. The fixed clamp includes a clamping plate in the side space, and a tightening bolt pressing the pipe seat against the clamping plate, allowing the clamping plate to press the outer pipe.