Abstract: A convenient self-locking blood pressure cuff facilitating one-handed use by a user taking his own blood pressure includes a cuff belt, a casing assembly, and a self-locking structure. The self-locking structure is received in the casing assembly. The self-locking structure includes a core shaft, a locking assembly, and a pressing assembly. The core shaft is slidably connected to the casing assembly. The locking assembly and the pressing assembly are wrapped around the core shaft. The locking assembly can rotate when a free end of the cuff belt moves with respect to the casing assembly. The locking assembly can further press against the cuff belt when the core shaft slides in the casing assembly. The pressing assembly presses against the locking assembly to prevent the locking assembly from rotating back.

Abstract: A convenient self-locking blood pressure cuff facilitating one-handed use by a user taking his own blood pressure includes a cuff belt, a casing assembly, and a self-locking structure. The self-locking structure is received in the casing assembly. The self-locking structure includes a core shaft, a locking assembly, and a pressing assembly. The core shaft is slidably connected to the casing assembly. The locking assembly and the pressing assembly are wrapped around the core shaft. The locking assembly can rotate when a free end of the cuff belt moves with respect to the casing assembly. The locking assembly can further press against the cuff belt when the core shaft slides in the casing assembly. The pressing assembly presses against the locking assembly to prevent the locking assembly from rotating back.

Abstract: A convenient self-locking blood pressure cuff facilitating one-handed use by a user taking his own blood pressure includes a cuff belt, a casing assembly, and a self-locking structure. The self-locking structure is received in the casing assembly. The self-locking structure includes a core shaft, a locking assembly, and a pressing assembly. The core shaft is slidably connected to the casing assembly. The locking assembly and the pressing assembly are wrapped around the core shaft. The locking assembly can rotate when a free end of the cuff belt moves with respect to the casing assembly. The locking assembly can further press against the cuff belt when the core shaft slides in the casing assembly. The pressing assembly presses against the locking assembly to prevent the locking assembly from rotating back.

Abstract: An icon display structure includes a display panel including a silkscreen interlayer, a diffusion sheet, and a light source. The diffusion sheet includes a light transmission zone. The silkscreen interlayer includes a silkscreen icon and defines a hollow icon. The silkscreen icon is aligned with the hollow icon and appears directly on the display panel. The light transmission zone of the diffusion sheet is aligned with the silkscreen icon and the hollow icon. The light source is positioned behind the diffusion sheet. The light source emits light and the light transmits through the light transmission zone and the hollow icon to light up the silkscreen icon on the display panel.

Abstract: An air purification device includes a housing, an air quality sensor, an LED light group, and a controller. The air quality sensor is mounted within the housing and detects air quality parameters in real time. The LED light group is mounted within the housing and includes at least one LED light. The controller is mounted within the housing and controls the at least one LED light of the LED light group to emit light of a corresponding color according to the air quality parameters. The emitted light corresponds in color to indicate an air quality.

Abstract: A noise reduction device for reducing noise in refrigeration equipment includes at least one transition tube having a diameter gradually increasing from a capillary of the refrigeration equipment to an evaporator of the refrigeration equipment. The refrigerant liquid is circulated through the noise reduction device.