Abstract: A sliding-type locking buckle comprises a casing and a locking buckle body. The casing comprises an upper casing, a lower casing, and an inner cavity. The locking buckle body comprises an upper body, a lower body, and a compression spring. The upper casing is provided with an upper sliding slot. The inner wall of the upper casing is provided with a plurality of sawteeth along the length direction of the upper sliding slot. The lower body is located in the inner cavity. The top of the upper body protrudes out of the upper sliding slot. A lateral surface of the upper body is provided with a limiting protrusion. The limiting protrusion is provided with a sawtooth portion.

Abstract: Embodiments of the present invention provide a head-mounted equipment. The head-mounted equipment includes an equipment body, an accessory and a connecting assembly implementing detachable connection between the accessory and the equipment body, where the connecting assembly is arranged on the accessory; the connecting assembly includes a buckle structure and a spring pressing structure. A clamping groove structure adapted to the buckle structure is provided on the equipment body. When the buckle structure is clamped into the clamping groove structure, the spring pressing structure contacts with the equipment body and applies an elastic force in a first direction to the equipment body. Under the action of the elastic force in the first direction, the buckle structure applies pressure in a second direction to the clamping groove structure; and the first direction is opposite to the second direction.

Abstract: A sliding-type locking buckle comprises a casing and a locking buckle body. The casing comprises an upper casing, a lower casing, and an inner cavity. The locking buckle body comprises an upper body, a lower body, and a compression spring. The upper casing is provided with an upper sliding slot. The inner wall of the upper casing is provided with a plurality of sawteeth along the length direction of the upper sliding slot. The lower body is located in the inner cavity. The top of the upper body protrudes out of the upper sliding slot. A lateral surface of the upper body is provided with a limiting protrusion. The limiting protrusion is provided with a sawtooth portion.

Abstract: Embodiments of the present invention provide a head-mounted equipment. The head-mounted equipment includes an equipment body, an accessory and a connecting assembly implementing detachable connection between the accessory and the equipment body, where the connecting assembly is arranged on the accessory; the connecting assembly includes a buckle structure and a spring pressing structure. A clamping groove structure adapted to the buckle structure is provided on the equipment body. When the buckle structure is clamped into the clamping groove structure, the spring pressing structure contacts with the equipment body and applies an elastic force in a first direction to the equipment body. Under the action of the elastic force in the first direction, the buckle structure applies pressure in a second direction to the clamping groove structure; and the first direction is opposite to the second direction.

Abstract: Disclosed is an open headphone, comprising a front cover, a loudspeaker unit and a rear housing. A front headphone chamber is formed between the front cover and the loudspeaker unit. A rear headphone chamber is formed between the loudspeaker unit and the rear housing. The front cover is provided with several sound output holes. The loudspeaker unit has a middle loudspeaker hole which is through in a front-rear direction. The rear housing is also provided with a sound guide tube. The rear end of the sound guide tube is in communication with the external space of the headphone. The front end of the sound guide tube is inserted in the middle loudspeaker hole and at a distance from a vibrating diaphragm, and the distance is larger than a maximum vibration displacement of the vibrating diaphragm.

Abstract: Disclosed is an open headphone, comprising a front cover, a loudspeaker unit and a rear housing. A front headphone chamber is formed between the front cover and the loudspeaker unit. A rear headphone chamber is formed between the loudspeaker unit and the rear housing. The front cover is provided with several sound output holes. The loudspeaker unit has a middle loudspeaker hole which is through in a front-rear direction. The rear housing is also provided with a sound guide tube. The rear end of the sound guide tube is in communication with the external space of the headphone. The front end of the sound guide tube is inserted in the middle loudspeaker hole and at a distance from a vibrating diaphragm, and the distance is larger than a maximum vibration displacement of the vibrating diaphragm.