This multi-couplings plate (P1) includes a locking device comprising a frame (14) fixed on the plate (P1), locking members and a drive mechanism, comprising a rotary element (18) rotatable in the frame (14), a sliding element translatable relative to the frame (14) and which cooperates with the locking members. The locking device also comprises several ratchet notches (301-309) secured to an element (18) of the drive mechanism (16) and juxtaposed in the movement direction relative to the frame (14) of the element (18) of the drive mechanism, the ratchet notches (301-309) comprising a final notch (309) and at least one intermediate notch (303-308), and a pawl movable in a housing (326) of the frame (14) and pushed back by a spring (28) toward one of the ratchet notches (301-309). When the pawl cooperates with the intermediate notch (303-308), the pawl limits the movement of the sliding element toward its forward position to a position midway between the forward position and the withdrawn position, and in the coupled configuration, the pawl cooperates with the final notch (309) and keeps the sliding element in the withdrawn position.

This multi-couplings plate (P1) includes a locking device comprising a frame (14) fixed on the plate (P1), locking members and a drive mechanism, comprising a rotary element (18) rotatable in the frame (14), a sliding element translatable relative to the frame (14) and which cooperates with the locking members. The locking device also comprises several ratchet notches (301-309) secured to an element (18) of the drive mechanism (16) and juxtaposed in the movement direction relative to the frame (14) of the element (18) of the drive mechanism, the ratchet notches (301-309) comprising a final notch (309) and at least one intermediate notch (303-308), and a pawl movable in a housing (326) of the frame (14) and pushed back by a spring (28) toward one of the ratchet notches (301-309). When the pawl cooperates with the intermediate notch (303-308), the pawl limits the movement of the sliding element toward its forward position to a position midway between the forward position and the withdrawn position, and in the coupled configuration, the pawl cooperates with the final notch (309) and keeps the sliding element in the withdrawn position.

An adapter for connecting a water pipe and a high-pressure spray gun includes a connection assembly, a clamping assembly, and a covering member. The connection assembly includes a connector body defined by a side wall and extending between a proximal end and a distal end, and a chute that extends along the connection body between the proximal and distal ends. The water pipe is coupled along the proximal end and the spray gun is coupled along the distal end. The chute includes grooves, and tapered regions seamlessly extending below from the grooves. The clamping assembly is operatively coupled to the connector body. The covering member sleeves over the connection assembly to movably engage with the clamping assembly, and is pressed and released to realise the buckle to move down from the grooves towards the tapered regions and back from grooves to the tapered regions, to clamp the water pipe.

Fluid couplings described herein are designed to prevent spillage of fluid when connecting and disconnecting the couplings. In some embodiments, the fluid couplings described herein include internal valve components. In some example embodiments, the internal valve components include two springs that are arranged to exert their spring forces in parallel with each other to bias a valve component to a normally closed position. Some embodiments include a single spring. In particular embodiments, components of the fluid couplings and fluid flow paths of the fluid couplings have oblong transverse cross-sectional shapes.

Fluid couplings described herein are designed to prevent spillage of fluid when connecting and disconnecting the couplings. In some embodiments, the fluid couplings described herein include internal valve components. In some example embodiments, the internal valve components include two springs that are arranged to exert their spring forces in parallel with each other to bias a valve component to a normally closed position. Some embodiments include a single spring. In particular embodiments, components of the fluid couplings and fluid flow paths of the fluid couplings have oblong transverse cross-sectional shapes.

A gardening fluid connection device contains a body including multiple retainers, a resilient element, and a fitting sleeve including multiple spaced engagement teeth. The resilient element abuts against the body and the fitting sleeve. The body includes a stop rib, and the multiple spaced engagement teeth are pushed by the resilient element to abut against the stop rib. The body includes at least one retaining element, each retaining element is located on a first side of each spaced engagement tooth, and a width of each spaced engagement tooth is equal to a rotation distance of the fitting sleeve, hence the fitting sleeve is rotated reciprocatingly to open or close of the gardening fluid coupling device by using the stop rib, each retaining element, each spaced engagement tooth and the resilient element, and each retaining element is stopped when moving to a second side of each spaced engagement tooth.

A retainer for a fluid connection assembly, including a first end, a second end, a first section, a second section displaceable with respect to the first section, a radially inward facing surface, a radially outward facing surface, and an indicator slidably connected to the first section.

A quick connector includes a socket having a socket opening and a plug inserted and coupled to the socket opening. The socket includes a socket body having a socket space into which the plug is inserted and a latch that hampers insertion of the plug into the socket space or stops the plug from escaping to the outside. The plug includes an insert body, an insert O-ring that surrounds the insert body, and an insert hook protruding outward from the insert body. The latch includes a latch frame, a latch opening formed in the latch frame, and a latch step that hides part of the latch opening, the latch step being disposed on the latch frame such that when the insert body is inserted into the socket space, the insert O-ring does not make contact with the latch step, but the insert hook makes contact with the latch step.

A connector for connection between two fluid-conveying elements, in particular for connection between two motor vehicle pipes, with a female plug-in part and a male plug-in part which is insertable into the female plug-in part. A retainer is connected to the female plug-in part, the retainer allowing the male plug-in part to be fixed, in the inserted state, to the female plug-in part. The retainer may be pivoted from an open position to a fixing position—and vice versa—about a pivot axis arranged in the region of the outer surface of the female plug-in part.

A quick connection device with a double-checked locking mechanism includes a connection housing and a locking mechanism, the locking mechanism including a first locking mechanism inserted into the connection housing and having a pedestal from which a pair of retaining arms extends, the pair of retaining arms being connected by a connection strip to form a retaining ring for fitting with an opposite plug-in tube, and having an elastic reset component; and a second locking mechanism inserted into the connection housing having a base from which locking arms and holding arms extend, the first locking mechanism being inserted between the locking arms and the holding arms, wherein the locking arms support a portion of the first locking mechanism and the second locking mechanism prevents movement of the first locking mechanism from the locked position to an unlocked position when the second locking mechanism is in a locked position.