Abstract: An adjustable stand for mobile devices includes a board-like body, and a first holding unit and a second holding unit. The first holding unit is movable between the upper end and the bottom end of the body. The second holding unit is movable between the left side and the right side of the body. Two lateral members are respectively connected to the left side and the right side of the body. A support includes a bar with two arms extending from two ends of the bar. Each arm has a connector and two connectors are pivotably connected to the left and right sides of the body. The bar can be put on a desk top. The mobile device is positioned by the first and second holding units.

Abstract: A wireless earphone includes an earphone body with a concha contact surface. A sound outlet tube protrudes out from the concha contact surface. A convex positioning portion protrudes out from the concha contact surface. A laid slot is located on the concha contact surface and adjacent to the convex positioning portion. When the earphone body is mounted on a human ear, the concha contact surface is configured to face a concha of the human ear, the sound outlet tube is configured to insert into an auditory canal of the human ear, the convex positioning portion is configured to fit within a cavum of the human ear, and the laid slot is configured to fit within a crux helix of the human ear.

Abstract: An in-ear headphone includes a shell, a speaker, a circuit board, and a sensing structure. The shell has an accommodating space. The speaker is disposed in the accommodating space. The circuit board is disposed in the accommodating space, and the circuit board is electrically connected to the speaker. A sensing chip is disposed on the circuit board. The sensing structure includes a sensing member and a transmission member. The sensing member protrudes from a front end of the shell and has a conductor. The sensing member is electrically connected to the sensing chip by the transmission member. A material of the sensing member is different from a material of the shell.

Abstract: An in-ear headphone includes a shell, a speaker, a circuit board, and a sensing structure. The shell has an accommodating space. The speaker is disposed in the accommodating space. The circuit board is disposed in the accommodating space, and the circuit board is electrically connected to the speaker. A sensing chip is disposed on the circuit board. The sensing structure includes a sensing sound tube and a transmission member. The sensing sound tube protrudes from a front end of the shell and has a conductor. The sensing sound tube is electrically connected to the sensing chip by the transmission member. A material of the sensing sound tube is different from a material of the shell.

Abstract: An in-ear headphone includes a shell, a speaker, a circuit board, and a sensing structure. The shell has an accommodating space. The speaker is disposed in the accommodating space. The circuit board is disposed in the accommodating space, and the circuit board is electrically connected to the speaker. A sensing chip is disposed on the circuit board. The sensing structure includes a sensing sound tube and a transmission member. The sensing sound tube protrudes from a front end of the shell and has a conductor. The sensing sound tube is electrically connected to the sensing chip by the transmission member. A material of the sensing sound tube is different from a material of the shell.

Abstract: A wireless earphone includes an earphone body with a concha contact surface. A sound outlet tube protrudes out from the concha contact surface. A convex positioning portion protrudes out from the concha contact surface. A laid slot is located on the concha contact surface and adjacent to the convex positioning portion. When the earphone body is mounted on a human ear, the concha contact surface is configured to face a concha of the human ear, the sound outlet tube is configured to insert into an auditory canal of the human ear, the convex positioning portion is configured to fit within a cavum of the human ear, and the laid slot is configured to fit within a crux helix of the human ear.

Abstract: An adjustable stand for mobile devices includes a board-like body, and a first holding unit and a second holding unit. The first holding unit is movable between the upper end and the bottom end of the body. The second holding unit is movable between the left side and the right side of the body. Two lateral members are respectively connected to the left side and the right side of the body. A support includes a bar with two arms extending from two ends of the bar. Each arm has a connector and two connectors are pivotably connected to the left and right sides of the body. The bar can be put on a desk top. The mobile device is positioned by the first and second holding units.

Abstract: A vacuum breaker includes a main body, a bushing mounted in the main body, a braking member mounted in the main body and located above the bushing, a water stop gasket mounted in the main body and located above the braking member, an elastic member mounted in the main body and biased between the bushing and the braking member, a water inlet disk mounted in the main body and located above the water stop gasket, and a washer mounted in the main body and located above the water inlet disk. The vacuum breaker further includes a connection structure mounted between an inner circumference of the main body and an outer circumference of the bushing. The bushing is combined integrally with the main body by the connection structure under an external force and will not be detached from the main body.

Abstract: A vacuum breaker includes a main body, a bushing mounted in the main body, a braking member mounted in the main body and located above the bushing, a water stop gasket mounted in the main body and located above the braking member, an elastic member mounted in the main body and biased between the bushing and the braking member, a water inlet disk mounted in the main body and located above the water stop gasket, and a washer mounted in the main body and located above the water inlet disk. The vacuum breaker further includes a connection structure mounted between an inner circumference of the main body and an outer circumference of the bushing. The bushing is combined integrally with the main body by the connection structure under an external force and will not be detached from the main body.

Abstract: A diagnostic device includes a body with a circuit board located therein. The body includes a display screen and a function button unit located on the outside thereof. A connection port and an insertion hole are respectively located to the body. An information cassette is inserted in the insertion hole and electrically connected to the circuit board. A cable unit has a first end and a second end, wherein the first end of the cable unit is connected to the connection port, and the second end of the cable unit is connected to a power source and an output port of a cleaning device which is connected to the throttle valve. When the diagnostic device detects abnormal information of the throttle valve via the cable unit, the display screen displays the abnormal information, the cleaning device cleans the throttle valve. The diagnostic device diagnoses the throttle valve afterward.

Abstract: An earphone including a housing, a speaker and an eartip is provided. The housing has an accommodating space and a first sound outlet communicated with each other. The speaker is disposed in the accommodating space. The eartip is assembled to the housing. The eartip has a second sound outlet and an incline extension surface. The incline extension surface is configured to fit into a cavum of a user's auricle and withstand an antihelix of the user's auricle.

Abstract: A vacuum breaker includes a main body, a bushing, an elastic member, a braking member, a water stop gasket, a water inlet disk and a washer. The interior of the main body is provided with a positioning groove. The bushing is made of metallic material and has an exterior provided with a positioning protrusion secured in and combined integrally with the positioning groove of the main body. The bushing is extruded outward by an oil pressure to form the positioning protrusion. Thus, the bushing is combined with the main body integrally and will not be detached from the main body.

Abstract: A hydrant device includes a faucet body, a rotation shaft, an upper rotation cap, a check valve, a switch valve, a lower fixed cap, and a water intake seat. The faucet body is provided with a rotary knob connected with the rotation shaft which is connected with the upper rotation cap. A first elastic member is biased between the rotation shaft and the upper rotation cap. A second elastic member is biased between the upper rotation cap and the check valve. The check valve is provided with a stop face. The switch valve is combined with the upper rotation cap. The water intake seat is mounted on the faucet body. Thus, the stop face forms an anti-reverse state to seal the switch valve, thereby preventing water from being gathered in the switch valve.

Abstract: A hydrant device includes a faucet body, a rotation shaft, an upper rotation cap, a check valve, a switch valve, a lower fixed cap, and a water intake seat. The faucet body is provided with a rotary knob connected with the rotation shaft which is connected with the upper rotation cap. A first elastic member is biased between the rotation shaft and the upper rotation cap. A second elastic member is biased between the upper rotation cap and the check valve. The check valve is provided with a stop face. The switch valve is combined with the upper rotation cap. The water intake seat is mounted on the faucet body. Thus, the stop face forms an anti-reverse state to seal the switch valve, thereby preventing water from being gathered in the switch valve.

Abstract: An earphone including a housing, a speaker and an eartip is provided. The housing has an accommodating space and a first sound outlet communicated with each other. The speaker is disposed in the accommodating space. The eartip is assembled to the housing. The eartip has a second sound outlet and an incline extension surface. The incline extension surface is configured to fit into a cavum of a user's auricle and withstand an antihelix of the user's auricle.