2023 recent patents in China bearing and related industries

1. Shandong Jindi Precision Machinery Technology Co., Ltd. has obtained a patent for injection molded self-aligning bearing cage, providing better support effect

On November 17, 2023, according to the announcement of the China National Intellectual Property Administration, Shandong Jindi Precision Machinery Technology Co., Ltd. obtained an item entitled "a kind of injection self-aligning bearing cage and self-aligning bearing", with the publication number of CN117072565A, and the patent application date of November 2023.

The patent abstract shows that the present invention discloses an injection molded self-aligning bearing cage, which includes a first end ring and a second end ring arranged in intervals and parallel. The central axes of the two are collinear, and the first end ring and the second end ring form a circular platform configuration. The thickness of the annular surface on the side of the second end ring facing the central axis is greater than that on the side away from the central axis; The support beam is fixedly connected to the ring surface opposite the first end ring and the second end ring at both ends. Multiple support beams are uniformly arranged along the circumference of the first end ring, and a pair of locking point units are symmetrically arranged on both sides of the support beam in its width direction. The locking point units are concave in the middle and convex at both ends in the length direction of the support beam. The rollers are locked against detachment between adjacent support beams through locking point units. This design not only enables the setting of locking point units on the support beam to prevent the roller from falling out and locking, but also increases the material thickness at the position where the cage bears stronger force through the differential thickness design of the second end ring, ensuring the support effect of the cage.

2. Zhuhai Gree Electric Appliances Co., Ltd. has obtained a patent for magnetic levitation bearings, which enables the magnetic levitation bearing system to continue to operate

According to the announcement of the China National Intellectual Property Administration, Zhuhai Gree Electric Appliance Co., Ltd. has obtained a patent named "Energy Feedback Device, Method and Magnetic Suspension System of Magnetic Suspension Bearing System", with the publication number of CN117072558A and the patent application date of November 2023.

The patent abstract shows that the present invention discloses an energy feedback device, method, and magnetic levitation system for a magnetic levitation bearing system. This patented technology includes two energy feedback paths. When the mains power is abnormally cut off, the electrical energy generated by the motor idling can be fed back to the magnetic levitation bearing system; At the same time, when the bearing voltage of the magnetic levitation bearing system is detected to be less than its stable working voltage, the energy feedback voltage is adjusted and supplied to keep the magnetic levitation bearing system in working condition, extend its working time, and ensure zero speed drop of the rotor.

3. Zhuhai Gree Electric Appliances Co., Ltd. has obtained a patent for gas dynamic bearings, increasing the support area for the shaft and improving bearing environmental compatibility

On November 17, 2023, it was reported that according to the announcement of the China National Intellectual Property Administration, Zhuhai Gree Electric Appliance Co., Ltd. obtained a project named "A Radial Foil Gas Hydrodynamic Bearing and Motor", with the publication number of CN117072568A and the patent application date of November 2023.

The patent abstract shows that the present invention provides a radial foil gas dynamic pressure bearing and motor, wherein the radial foil gas dynamic pressure bearing comprises a bearing seat, a corrugated foil, and a top foil. The inner circumferential wall of the bearing seat is provided with a first groove and a second groove, and the corrugated foil comprises a first fixed end located at one circumferential end and a first free end located at the other circumferential end, The top foil includes a second fixed end located at one end in the circumferential direction and a second free end located at the other end in the circumferential direction. The first fixed end of the wave foil and the second fixed end of the top foil can be inserted into the second slot and fixed, while the first free end of the wave foil and the second free end of the top foil can be inserted into the first slot and limited. According to the present invention, the contact area between the free ends of the wave foil and top foil and the bearing seat is effectively increased, the supporting area of the shaft is increased, the "dead zone" area is reduced, and the bearing obtains a larger load-bearing area, improving the environmental compatibility of the bearing.

4.Chongqing Chang'an Automobile Co., Ltd. has obtained a patent for lubricating oil guide structure to solve the problem of insufficient lubrication in key parts

On November 17, 2023, according to the announcement of the China National Intellectual Property Administration, Chongqing Chang'an Automobile Co., Ltd. has obtained a patent entitled "a motor bearing lubricating oil transmission structure", with the publication number of CN220038147U and the patent application date of November 2023.

The patent abstract shows that the utility model relates to a motor bearing lubricating oil guide structure, which includes a motor body, wherein a bearing installation hole is arranged on the motor body, and the bearing installation hole is used for installing the bearing; An oil guide groove is located on the lower side of the end of the bearing installation hole, and the oil guide groove is connected to the bearing installation hole; A spray pipe assembly and an oil injection pipe, wherein the spray pipe assembly is installed on the motor body; The spray pipe assembly is connected to the fuel injection pipe, which is used to spray lubricating oil into the oil guide groove, solving the problem of insufficient lubrication of key parts of the extended range electric drive due to splash lubrication in existing technology, resulting in reduced reliability of the extended range electric drive.

5. Bengang Steel Plate Co., Ltd. has obtained a patent for continuous casting bearing steel, which enables the bearing steel core to have no shrinkage cavities under acid immersion low magnification inspection

On November 17, 2023, it was reported that according to the announcement of the China National Intellectual Property Administration, Bengang Steel Plate Co., Ltd. obtained a project entitled "A Bearing Steel Smelted by Pellet Ore and Its Preparation Method", with the publication number of CN117070856A, and the patent application date of November 2023.

The patent abstract shows that this method uses "pellet+scrap" as raw materials, and uses "ECOARC ecological electric furnace smelting+LF furnace refining+RH vacuum treatment+continuous casting+continuous rolling unit" to produce bearing steel. It meets the requirements of high purity, high fatigue life, high wear resistance of bearing steel, and has the characteristics of low-carbon environmental protection and low cost.