Please select the most similar patent number from A, B, C and D. Which number is?
A cushion compact core (100) and a cushion compact case having the cushion compact core (100). The cushion compact core (100) comprises a case body (1), a case cover (2), and a sealing ring (3); the sealing ring (3) comprises a ring base body (31), the ring base body (31) comprising a first part (311) located above an opening of the case body (1), and a second part (312) located around the periphery of the first part (311); the sealing ring (3) further comprises a ring part (32) covering the periphery of the second part (312); both the second part (312) and the ring part (32) are located in an accommodating groove (11); the ring base body (31) is made of a material on which volatiles are not easy to keep, and the ring part (32) is made of an elastic material being able to elastically deform. The sealing ring (3) can cooperate with the case cover (2), when the case cover (2) covers the case body (1), to achieve sealing, and the case cover (2) can be integrally formed using a conventional PP material, without the need of designing complex molds and molding processes for manufacturing same, greatly reducing costs, and improving the sealing performance of the cushion compact core (100).
A: A simple air cushion powder container, comprising an outer container assembly (1) and an inner plate assembly (2) constructed using a rigid plastic material. The inner plate assembly (2) comprises an insert (20) and an inner plate (21). The insert (20) can be sealingly connected to an opening side of the inner plate (21). The insert (20) and inner plate (21) can both be provided within the outer container assembly (1). The insert (20) is an assembly of a first insert (201) and a second insert (202). A first airtight edge ring (2013) and second airtight edge ring (2023) are opposingly provided on the first insert (201) and the second insert (202). At least one of a plurality of snap fit surfaces between upper sides of the first airtight edge ring (2013), the second airtight edge ring (2023), and a second body (2020) is tightly coated with a sealant layer (22) constructed using a soft plastic material, providing a good sealing and closing effect between the first insert (201) and the second insert (202). A plurality of airtight sealing strips (23) are provided on an inner side wall of the second body (2020) of the second insert (202), greatly improving a sealing and closing effect between the second body (2020) and the inner plate (21). The double airtight sealing design optimizes the airtight sealing effect of the inner plate assembly (2) and can ensure the quality of a cosmetic material in the inner plate (21) for an extended period of time.
B: Disclosed is a device for adding water into milk powder, comprising a milk bottle (1) and a milk powder box (2), wherein the milk powder box (2) comprises a box body component (20) and a box bottom (30), the box body component (20) comprises a box body (21) and a box body connection part (22), the box body (21) comprises a box body base (211) and a first sealing part (212) formed integrally with the box body base (211), an upper part of the box body base (211) is cooperatively connected to a nipple, a lower part of the box body base (211) is cooperatively connected to an upper part of the box body connection part (22), and a lower part of the box body connection part (22) is cooperatively connected to the milk bottle (1); the box bottom (30) is sheathed on a bottle mouth of the milk bottle (1), with an annular belt of an outer ring of the box bottom (30) being provided with a leak hole (327), and the box bottom (30) comprises a box bottom base (31) and a second sealing part (32) integrally formed with the box bottom base (31); and the box body (21) is movably connected to the box body connection part (22) and can move relatively longitudinally to form a first operation position which has a milk powder placing cavity isolated, in a sealed manner, from an inner cavity of the milk bottle (1), and a second operation position which has a milk powder channel isolated from the outside in a sealed manner for adding water into the milk powder. The device for adding water into milk powder has a simplified structure and improved reliability and the durability of the sealing members.
C: The present application relates to a case and a mobile terminal. The case comprises: a case cover (100), which comprises a covering part (111) and an extending part (112); a case body (200), a cavity (211) having an opening (210) being provided inside the case body (200), the case cover (100) being rotatably connected to the case body (200) so that the covering part (111) can open or close the opening (210), the extending part (112) extending from a rotary connection part (300) of the case cover (100) and the case body (200), and at least a part of the extending part (112) extending into the cavity body (211), and the extending part (112) and the covering part (111) move synchronously; a first magnetic member (11), at least a part of the first magnetic member (11) being provided on the extending part (112); and a second magnetic member (12), provided in the cavity (211) of the case body (200) and located outside a rotary track of the extending part (112). In a process that the case cover (100) and the case body (200) are switched from a closed state to an opening state, when the covering part (111) and the case body (200) are opened at a certain angle, the magnetic field force between the first magnetic member (11) and the second magnetic member (12) drives the case cover (100) and the case body (200) to open.
D: Provided is an environmentally friendly portable sharp instrument box, comprising a box body (1) and a box cover (2), wherein external threads (100) are provided at the outer edge of an opening end of the box body (1); the box cover (2) is provided with an annular portion (21) with an L-shaped section, and internal threads (210) matching the external threads (100) are arranged on the inner edge of a vertical section of the annular portion (21); the box body (1) is further provided with an annular groove (11), and the bottom end of the box cover (2) is in threaded connection with the annular groove (11); a feeding port (22) is provided on the box cover (2); and two semicircular pressing blocks (221) are arranged at the feeding port (22) of the box cover (2), and two first sliding grooves (2210) for allowing the semicircular pressing blocks (221) to slide are provided on the box cover (2). When sharp instruments are discarded into the sharp instrument box, one of the semicircular pressing blocks can be pulled, so that part of the feeding port on the box cover is opened, if the sharp instruments are thought to be too long, the semicircular pressing blocks can be loosened, and under the action of first springs, cutting blades at a semicircular notch on the semicircular pressing blocks are used for cutting the sharp instruments, so that the space utilization rate in the sharp instrument box can be improved in a covert manner.
Answer: A