4results about How to "Save volume and space" patented technology

This utility model relates to the field of office supplies, and particularly to a foldable flat file box. It includes a base plate, a first horizontal plate, a second horizontal plate, a first vertical plate, a second vertical plate, and a third vertical plate, with a certain gap between the second and third vertical plates. The first horizontal plate is connected to the first vertical plate via a first adhesive plate, the first horizontal plate is connected to the second vertical plate via a second adhesive plate, the second horizontal plate is connected to the first vertical plate via a third adhesive plate, and the second horizontal plate is connected to the third vertical plate via a fourth adhesive plate. The first, second, third, and fourth adhesive plates have adhesive surfaces. The base plate is connected to a cover plate via a connecting plate. The file box also includes a paper presser, which includes a fixing part, a swing arm, and a torsion spring. This utility model file box can be completely flattened, facilitating transportation and saving space. The fixing part of the paper presser can be fixed to any of the following plates: the first horizontal plate, the second horizontal plate, or the first vertical plate, as needed.

The utility model relates to a kind of for ultrasonic ceramic impedance matching multi-channel integrated device, including integrated bottom plate, wherein, integrated bottom plate is provided with impedance matching input end and impedance matching output end, multiple parallel impedance parameter matching plates are connected between impedance matching input end and impedance matching output end, impedance matching input end is connected with drive circuit, impedance matching output end is connected with piezoelectric ceramic sheet.Compared with prior art, the utility model uses the design of integrated impedance parameter matching plate, by setting impedance matching input end and impedance matching output end on integrated bottom plate, connecting multiple parallel impedance parameter matching plates between impedance matching input end and impedance matching output end, to realize the purpose of multi-channel impedance matching, in the case where load impedance changes, it can be dynamically adapted to different impedance matching, and greatly reduce the volume space of entire device, it is beneficial to actual production and application.

The application discloses a frequency-adjustable multifunctional pipeline acoustic end load, an implementation method and an application device, relates to the field of experimental measurement of acoustic performance of a muffler, and the air pipeline acoustic end load comprises an array of electroacoustic coupling structures and at least one shunt circuit module; the array of electroacoustic coupling structures comprises at least one electroacoustic coupling structure; a shunt circuit module is connected between the positive electrode and the negative electrode of the coil of each electroacoustic coupling structure; the shunt circuit module comprises an operational amplifier, a positive electrode unit, a negative electrode unit, a first resistor and a second resistor; the negative electrode unit comprises an adjustable impedance component. The application can effectively change low-frequency impedance, further accurately measure the low-frequency performance of the muffler, control noise at low frequencies, and adjust circuit elements to absorb noise of different frequencies without changing the mechanical structure. In addition, the acoustic experimental measurement of the muffler can also be realized by using a double sound source method.

This invention aims to overcome the shortcomings of existing foam pumps used in smart toilets and provide a foam pump for smart toilets with a simple structure and high foam generation and delivery efficiency. The foam pump includes a foam-generating component, a diaphragm pump component, a drive component, and a peristaltic pump component connected in sequence. The foam-generating component includes a flow divider, a bubble mesh structure, and a flow divider cover. The flow divider and the flow divider cover are connected to form a liquid inlet chamber, an air inlet chamber, and a mixing foam-generating chamber. The bubble mesh structure is disposed in the mixing foam-generating chamber. The liquid inlet chamber, the air inlet chamber, and the mixing foam-generating chamber are respectively connected to the diaphragm pump component. The peristaltic pump component includes a flexible tube with a foaming liquid inlet at one end and a liquid inlet at the other end. The drive component includes a motor, which is connected to the diaphragm pump component and the peristaltic pump component through a first output shaft and a second output shaft, respectively. The motor drives the diaphragm pump component and the peristaltic pump component simultaneously through the two output shafts.