Patent MX-2022003621-A (MX)
Title: Molded paper pulp cup cover and connecting structure for cup cover plate and flip cover.
Inventor: TONG JI
IPC: B65D47/08
Filed: 2020-09-25
Abstract: A connecting structure for a molded paper pulp cup cover plate and a lifting cover, comprising a cup cover plate (10). A tearable turnover flip cover (20) which is integrally formed with the cup cover plate is arranged on the cup cover plate (10), and a drinking hole (30) is formed in the cup cover plate (10) after the tearable turnover flip cover (20) is overturned relative to the cup cover plate (10); the rear side of the tearable turnover lifting cover (20) is connected to the hole wall of the drinking hole (30) by means of at least one turnover stress connection point (40); the circumferential side edge of the tearable turnover flip cover (20) is connected to the drinking hole (30) by means of a tearing line; the drinking hole (30) is a conical drinking hole of which the inner diameter gradually reduces from top to bottom; the tearing line comprises a U-shaped section (10a) away from the side of the turnover stress connecting point (40) and arc-shaped sections (10b) located at the two ends of the U-shaped section (10a); tearable connecting points (50) are formed between the U-shaped section (10a) and the arc-shaped sections (10b), and the two tearable connecting points are symmetrically distributed with respect to the axis line of the drinking hole; a vertical distance 1 (L1) from the tearable connecting points (50) to the bottom of the U-shaped section (10a) is greater than a vertical distance 2 (L2) from the tearable connecting points (50) to the turnover stress connecting points (40).A connecting structure for a molded paper pulp cup cover plate and a lifting cover, comprising a cup cover plate (10). A tearable turnover flip cover (20) which is integrally formed with the cup cover plate is arranged on the cup cover plate (10), and a drinking hole (30) is formed in the cup cover plate (10) after the tearable turnover flip cover (20) is overturned relative to the cup cover plate (10); the rear side of the tearable turnover lifting cover (20) is connected to the hole wall of the drinking hole (30) by means of at least one turnover stress connection point (40); the circumferential side edge of the tearable turnover flip cover (20) is connected to the drinking hole (30) by means of a tearing line; the drinking hole (30) is a conical drinking hole of which the inner diameter gradually reduces from top to bottom; the tearing line comprises a U-shaped section (10a) away from the side of the turnover stress connecting point (40) and arc-shaped sections (10b) located at the two ends of the U-shaped section (10a); tearable connecting points (50) are formed between the U-shaped section (10a) and the arc-shaped sections (10b), and the two tearable connecting points are symmetrically distributed with respect to the axis line of the drinking hole; a vertical distance 1 (L1) from the tearable connecting points (50) to the bottom of the U-shaped section (10a) is greater than a vertical distance 2 (L2) from the tearable connecting points (50) to the turnover stress connecting points (40). An inertial navigation error correction method based on vehicle zero speed detection. When a vehicle runs, wheel speed sensing data and INS data are acquired, and in the process of vehicle running, zero speed detection is performed with a zero speed detection algorithm by using wheel speed, an accelerometer, and a gyroscope. The principle of zero speed detection is that joint probability based on a Neyman-Pearson criterion is performed in respect of wheel speed, accelerometer, and gyroscope signals, and the principle of zero speed correction is: 1, when the vehicle detects zero speed, performing zero setting processing on speed and angular speed to prevent accumulation of speed errors and angular speed errors from causing position and attitude deviation; 2, after the zero speed is detected, respectively re-estimating attitude and gyroscope zero deviation by means of the outputs of the accelerometer and an angular speed meter; and 3, after the vehicle moves again and exits a zero speed state, correcting the INS by using the re-estimated attitude and gyroscope zero deviation. Compared with the prior art, the method has the advantages of suppressing navigation error drift, improving detection accuracy, and the like.