4results about How to "Avoid knocking noise" patented technology

This utility model relates to the field of HVAC technology and discloses an HVAC filtration device that facilitates filter replacement. It includes an air inlet pipe with a quick-release mechanism for easy component maintenance. A fixing plate is symmetrically installed on the inner wall of the air inlet pipe, and a rubber pad is fixedly installed in the dovetail groove inside the fixing plate. This utility model employs an interlocking structure of the dovetail block and the dovetail groove of the fixing plate, along with a quick-locking mechanism using a baffle and a locking rod. Without the need for any tools, operators can easily disassemble and assemble the filter plate in a short time with simple push-pull and rotation actions. This simplifies the filter replacement process, improves replacement efficiency, and reduces maintenance costs. Simultaneously, the rubber pad deforms under pressure during filter plate installation, tightly filling the gap between the filter plate and the dovetail groove of the fixing plate, effectively preventing unfiltered air from leaking out, ensuring air filtration effect, and improving the operating quality of the HVAC system.

This utility model relates to the field of brake calipers, and discloses an electromechanical brake caliper assembly integrating a parking lock mechanism, including a brake caliper assembly and a brake motor assembly, which are fixedly connected. The brake caliper assembly includes a caliper body, a force sensor, a ball screw assembly, and a friction pad assembly. The brake motor assembly includes a PCBA, an ECU main housing, and a lower housing arranged from top to bottom. An actuator motor is installed at the bottom of the lower housing, and a gear transmission assembly and a parking lock device are installed inside the lower housing. The actuator motor and the gear transmission assembly are linked through the parking lock device. A clamping force transmission module is provided between the PCBA and the brake caliper assembly. The PCBA's elastic contact pin is connected to the upper pin, so that the force sensor sends a signal to the PCBA through the clamping force transmission module. Compared with using an external cable to connect the force sensor and the controller to transmit signals, this utility model is simpler to assemble and the signal transmission is safer and more reliable.

This utility model belongs to the field of switch technology, specifically a silent tactile switch, including a base and a top cover. The base is provided with a first contact and a second contact, both of which extend into the interior of the base. A dome switch is mounted on the base, including a connecting part and a contact part. The contact part is provided with a moving contact that mates with the second contact. The top cover is provided with a button that extends through the top. A silicone pad is provided between the button and the dome switch. The bottom end of the silicone pad has a protrusion that contacts the dome switch, and also has a vent hole and a positioning protrusion on the bottom circumference. The top of the base is provided with a positioning groove that mates with the positioning protrusion. The top cover and the base are riveted together. Through the above structural design, this utility model can effectively reduce pressing and rebound noise, improve the quietness of operation and response sensitivity, and extend the service life.

This utility model discloses a silent umbrella eyelet machine, including a frame, a riveting base on the frame, a lower mold at the bottom of the riveting base, a machine head above the lower mold, an upper mold punch adapted to the lower mold on the machine head, a riveting drive mechanism connected to the upper mold punch, a vibratory feeder connected to one side of the machine head, a feeding track at the output end of the vibratory feeder, a movable track at the end of the feeding track, a contact surface near the machine head, a pressure roller inside the contact surface on the machine head, the pressure roller pushing the movable track to move its output end outward after descending, a return spring between the output end of the movable track and the riveting base, the return spring controlling the inward return of the movable track's output end after outward movement. This utility model helps to solve the problem of excessive noise generated during operation due to structural collisions in the outward movement drive of the feeding track in some current eyelet machines.