Abstract: Provided is a method for synthesizing a chiral amine compound. A transaminase is used to transaminate a ketone substrate under the action of an amino donor, to obtain the chiral amine compound; and the conserved amino acid sequence region of the transaminase at least includes a region 1 (MAGLWCVN) and a region 2 (YNTFFKT). With the transaminase with the specific conserved amino acid sequence region to synthesize a large sterically hindered chiral amine, the enzyme catalytic reaction volume is small, the synthesizing route is short, the product yield is high, a high-cost noble metal is not required for catalysis under the synthesizing conditions, three wastes are reduced, and the production cost is saved.

Abstract: The present disclosure discloses a safety warning system for a child safety seat including a first detection device sending a first detection signal when detecting that the top tether is tensioned, a second detection device sending a second detection signal when detecting that the ISOFIX connector is installed in place, a third detection device sending a third detection signal when detecting that the buckle is buckled, and a transfer control device receiving first, second and third detection signals. When at least one of first, second and third detection signals is not received, the transfer control device sends an alarm signal to remind the user whether the top tether is installed or buckled, ISOFIX connector and buckle are correct, ensuring the safety and comfort of the child, and improving the installation efficiency of child safety seat. The present disclosure also provides a child safety seat.

Abstract: The present disclosure provides a retaining device for a carrier, which includes a base support assembly connected to and supporting a base of the carrier, a retaining assembly configured to secure the carrier to a vehicle seat, a fastening rod provided on and movable with the base support assembly, a slider provided within the retaining assembly and engaged with the fastening rod such that the fastening rod is able to move the slider, and a cushioning assembly engaged with the slider. The cushioning assembly provides cushioning to the slider when an impact force from the slider applied to the cushioning assembly reaches a predetermined value, allowing for a movement of the slider from a first position to a second position.

Abstract: The present disclosure discloses a child safety seat, which includes: a base, a rear portion of which is formed with a top rod protruding upwardly; a seat rotatably fixed on the base; and a tether telescopically connected to the base, wherein, the tether can be automatically retracted when it is extended relative to the base. The child safety seat of the present disclosure has an advantage of convenient connection and is not easy to misuse.

Abstract: A side wing adjustment mechanism and an adjustable sitting device, the side wing adjustment mechanism includes: a pin arranged on the headrest; and an inclined grooves arranged on the side wing, a distance between a portion of the inclined grooves and the longitudinal center axis gradually decreases in a direction extending from bottom to top toward the headrest along a longitudinal center axis of the backrest, and the pin is slidable along the inclined grooves. According to the application, the side wing can be folded and opened at will, and the structure of the application is more inclusive. During the opening and folding process, puling of the headrest or pushing of the side wing can be performed more smoothly and labor-savingly, and the phenomenon of deflection and jamming can be avoided, such that the opening and folding process of the side wings is smoother.

Abstract: A side wing adjustment mechanism and an adjustable sitting device, the side wing adjustment mechanism includes: a pin arranged on the headrest; and an inclined grooves arranged on the side wing, a distance between a portion of the inclined grooves and the longitudinal center axis gradually decreases in a direction extending from bottom to top toward the headrest along a longitudinal center axis of the backrest, and the pin is slidable along the inclined grooves. According to the application, the side wing can be folded and opened at will, and the structure of the application is more inclusive. During the opening and folding process, puling of the headrest or pushing of the side wing can be performed more smoothly and labor-savingly, and the phenomenon of deflection and jamming can be avoided, such that the opening and folding process of the side wings is smoother.

Abstract: A child safety seat comprising a base and a body rotatably connected to the base for providing a seating space. The base is rotatably connected to the body via a rotating shaft. The child safety seat further comprises an electrical pivoting structure including a base pivoting member for electrically connecting to a base electrical device in the base, and a body pivoting member for electrically connecting to a body electrical device in the body. The base pivoting member is coupled to the base and has a base conductive part. The body pivoting member is coupled to the body and has a body conductive part. The base conductive part and the body conductive part are rotatably and electrically connected in the rotating shaft. The base electrical device and the body electrical device are electrically connected to each other via electrical connection of the base conductive part and the body conductive part.

Abstract: A child safety seat comprising a base and a body rotatably connected to the base for providing a seating space. The base is rotatably connected to the body via a rotating shaft. The child safety seat further comprises an electrical pivoting structure including a base pivoting member for electrically connecting to a base electrical device in the base, and a body pivoting member for electrically connecting to a body electrical device in the body. The base pivoting member is coupled to the base and has a base conductive part. The body pivoting member is coupled to the body and has a body conductive part. The base conductive part and the body conductive part are rotatably and electrically connected in the rotating shaft. The base electrical device and the body electrical device are electrically connected to each other via electrical connection of the base conductive part and the body conductive part.

Abstract: The present disclosure discloses a child safety seat, which is for being installed on a vehicle seat. The child safety seat includes a base having an anchor part connected to the vehicle seat; a seat coupled to the base; a top rod fixed to the rear of the base; a tether assembly including a top tether and a tether fixing portion that are connected with each other, the top tether being connected with the top rod and the tether fixing portion being connected with the vehicle seat; and an alarm device including a switch which can be triggered when the top tether is tightened. The present disclosure also discloses a tether assembly and a support structure. The child safety seat can conveniently prompt that it is not correctly fixed, and can be conveniently fixed and adjusted, thereby improving the safety and riding comfort of the child safety seat.

Abstract: A side wing adjustment mechanism and an adjustable sitting device, the side wing adjustment mechanism includes: a pin arranged on the headrest; and an inclined grooves arranged on the side wing, a distance between a portion of the inclined grooves and the longitudinal center axis gradually decreases in a direction extending from bottom to top toward the headrest along a longitudinal center axis of the backrest, and the pin is slidable along the inclined grooves. According to the application, the side wing can be folded and opened at will, and the structure of the application is more inclusive. During the opening and folding process, puling of the headrest or pushing of the side wing can be performed more smoothly and labor-savingly, and the phenomenon of deflection and jamming can be avoided, such that the opening and folding process of the side wings is smoother.

Abstract: The present disclosure provides a retaining device for a carrier, which includes a base support assembly connected to and supporting a base of the carrier, a retaining assembly configured to secure the carrier to a vehicle seat, a fastening rod provided on and movable with the base support assembly, a slider provided within the retaining assembly and engaged with the fastening rod such that the fastening rod is able to move the slider, and a cushioning assembly engaged with the slider. The cushioning assembly provides cushioning to the slider when an impact force from the slider applied to the cushioning assembly reaches a predetermined value, allowing for a movement of the slider from a first position to a second position.

Abstract: A child safety seat comprising a base and a body rotatably connected to the base for providing a seating space. The base is rotatably connected to the body via a rotating shaft. The child safety seat further comprises an electrical pivoting structure including a base pivoting member for electrically connecting to a base electrical device in the base, and a body pivoting member for electrically connecting to a body electrical device in the body. The base pivoting member is coupled to the base and has a base conductive part. The body pivoting member is coupled to the body and has a body conductive part. The base conductive part and the body conductive part are rotatably and electrically connected in the rotating shaft. The base electrical device and the body electrical device are electrically connected to each other via electrical connection of the base conductive part and the body conductive part.

Abstract: A method for on-line diagnosing gradually-changing fault of electronic current transformers comprises the following steps collecting output signals of electronic transformers of a whole transformer substation, calculating theoretical instantaneous values of the current at the tail ends of power transmission lines and on secondary sides of transformers at every moment, comparing the theoretical instantaneous values with the corresponding collected values, calculating residual errors of the electronic current transformers at the head and tail ends of each power transmission line and the primary and the secondary sides of each transformer respectively, judging whether gradually-changing fault occurs with the electronic current transformers by comparing the residual errors with preset threshold values, and simultaneously performing Kirchhoff detection by injecting current into a busbar to position a fault transformer.