Abstract: A cyclic switching electric suction cup is provided. The electric suction cup includes a suction member and an actuating member. The actuating member includes an air extraction motor, a power supply, a control panel and a locking sleeve. When an air chamber is in the non-vacuum mode, one end of the locking sleeve abuts against a first switch to activate the air extraction motor and perform air extraction. During the air extraction, the air in the locking sleeve is simultaneously extracted and the locking sleeve elastically shrinks and deforms. After the air extraction is completed and the air chamber is in the vacuum mode, the end of the locking sleeve abutting against the first switch is gradually distant from the first switch so that the air extraction motor stop extraction. The actuating member repeats this cycle when the air chamber is in the non-vacuum mode.

Abstract: An anti-theft suction cup structure includes a suction-cup body and a pressure ring. The suction-cup body has a suction end and a braking end. The suction end has a cup groove recessed on a side thereof toward the braking end, the braking end has an exhaust part formed thereon and is normally in a closed status. The pressure ring is mounted on an outer periphery of the suction-cup body. When the suction end is used for suction, air in the cup groove is extracted to form vacuum between the cup groove and the attached object, the sidewall of the cup groove is tightly attached with the attached object. When air is injected into between the cup groove and the attached object, non-vacuum is formed between the cup groove and the attached object. In vacuum, the pressure ring is configured to press hard on the suction-cup body.

Abstract: An anti-theft suction cup structure includes a suction-cup body and a pressure ring. The suction-cup body has a suction end and a braking end. The suction end has a cup groove recessed on a side thereof toward the braking end, the braking end has an exhaust part formed thereon and is normally in a closed status. The pressure ring is mounted on an outer periphery of the suction-cup body. When the suction end is used for suction, air in the cup groove is extracted to form vacuum between the cup groove and the attached object, the sidewall of the cup groove is tightly attached with the attached object. When air is injected into between the cup groove and the attached object, non-vacuum is formed between the cup groove and the attached object. In vacuum, the pressure ring is configured to press hard on the suction-cup body.

Abstract: A hydraulic pipe coupling structure includes a first connector and a second connector. The first connector is provided with a head portion, a first mounting portion, and a through hole. The second connector is provided with a connecting portion and a second mounting portion. A stepped face is formed between the connecting portion and the second mounting portion. The second mounting portion of the second connector extends through the through hole into the first mounting portion of the first connector. The second mounting portion and the stepped face of the second connector are integrally combined with the through hole of the first connector by friction welding, such that the second mounting portion and the stepped face of the second connector, and the through hole of the first connector are welded and integrated.

Abstract: A universal fastening apparatus of the present invention includes a primary clamping portion, a first ball unit, a secondary clamping portion, a second ball unit and a pressing means. The primary clamping portion has a pair of primary clamping units defining a first rotary space and a second rotary space therebetween. The second rotary space includes an annular slot. The first rotary space includes a first spherical slot for the first ball of the first ball unit to selectively-rotatably dispose therein. The secondary clamping portion has a received end and a clamping end, and includes a pair of secondary clamping units defining a third rotary space therebetween. The third rotary space includes a second spherical slot. The received end is selectively rotatably disposed in the annular slot. The second ball of the second ball unit is selectively-rotatably disposed in the second spherical slot.

Abstract: A universal support is provided in the present invention. The universal support includes a brace unit, a mounting unit and a connecting unit, in which the brace unit has several joint assemblies with stronger mechanical strength and several quick-release clamp unit to carry heavier load, while the connecting unit can be securely fastened to a stationary object and the mounting unit can perform universally rotation so as to perfectly satisfy every need of the users.

Abstract: A universal support is provided in the present invention. The universal support includes a brace unit, a mounting unit and a connecting unit, in which the brace unit has several joint assemblies with stronger mechanical strength and several quick-release clamp unit to carry heavier load, while the connecting unit can be securely fastened to a stationary object and the mounting unit can perform universally rotation so as to perfectly satisfy every need of the users.

Abstract: An onboard universal support for a vehicle includes a base adapted to be mounted inside the vehicle, a securing mount connected to the base via a connecting rod assembly which is composed of multiple rods interconnected to each other via joints. Each of the joints is composed of a first disk and having a first extension extendable into one of the rods and a second disk selectively rotatable relative to the first disk and has a second extension extendable into another one of the rods such that inclination of the rods is changeable relative to the joints to facilitate access to an object on top of the securing mount.