Please select the most similar patent number from A, B, C and D. Which number is?
Disclosed is a structure of a suitcase (10), comprising a first case body (100) and a second case body (200), wherein one side of the first case body (100) has a first binding piece (120), the second case body (200) has a covering member (210) and a foldable member (220), with the foldable member (220) connected to the peripheral edge of the covering member (210); the foldable member (220) has respectively a second binding piece (221) and a third binding piece (222), with the second binding piece (221) being close to the first case body (100) and the third binding piece (222) being close to the covering member (210); and the first binding piece (120) is selectively connectable to the second binding piece (221) or the third binding piece (222) respectively, so as to have a use position and a collapsed storage position, thereby allowing the thickness of the suitcase (10) to be reduced for collapsed storage thereof.
A: Disclosed is a suitcase capable of expanding a carrying space, comprising a case body (1) and a wheel seat (2). The case body (1) has a telescopic tension rod (10) on one side thereof. The wheel seat includes two tracks (20) disposed in parallel, two connecting rods (30) respectively bonded to two ends of the two tracks (20), a plurality of wheels (40) disposed in the two tracks (20), and a positioning device (50) disposed in one of the tracks (20). Each track (20) comprises a middle track (21) capable of being fixed on a bottom face of the case body (1), and an upper track (23) and a lower track (22) respectively slidably embedded into an upper side face and a lower side face of the middle track (21). The upper track (23) and the lower track (22) can be retracted or extended on the middle track (21) to enable the middle track (21) to be in a retracted state or an extended state. The two connecting rods (30) are respectively bonded to the outer ends of the upper tracks (23) of the two tracks (20) and the outer ends of the lower tracks (22) of the two tracks (20). The positioning device (50) can position the two tracks (20) in the retracted state or the extended state. By means of the above-mentioned structure, the suitcase can greatly enhance the carrying capacity and have a better carrying stability.
B: A pin inserter (100). The pin inserter (100) is used for mounting a first connection member (200) in a mounting hole (301) of a second connection member (300). The pin inserter (100) comprises a feeding mechanism (10), a bearing mechanism (20), a removal mechanism (30), and a pressing mechanism (40). A feeding port (1422) is formed in the feeding mechanism (10), and the feeding mechanism (10) is used for conveying the first connection member (200) to the feeding port (1422). The bearing mechanism (20) is used for bearing the second connection member (300). The removal mechanism (30) is used for moving the first connection member (200) located at the feeding port (1422) in a first direction, so as to align the first connection member (200) with the mounting hole (301). The pressing mechanism (40) is used for pressing the first connection member (200) into the mounting hole (301) in a second direction that is perpendicular to the first direction. The pin inserter (100) conveys the first connection member (200) by using the feeding mechanism (10), and bears the second connection member (300) by using the bearing mechanism (20), and presses the first connection member (200) into the second connection member (300) in aligned fashion by using the removal mechanism (30) and the pressing mechanism (40) without manually mounting the first connection member (200) in alignment with the mounting hole (301). Therefore, the difficulty of operation is relatively small, and the efficiency is high.
C: A power assembly (100) and an unmanned aerial vehicle (200). The power assembly (100) comprises a first connector (10) and a second connector (20) combined with the first connector (10), wherein the first connector (10) is provided with a first combining member (12), the second connector (20) is provided with a second combining member (22), at least one of the first combining member (12) and the second combining member (22) can be elastically deformed, and the second combining member (22) is combined with the first combining member (12).
D: Disclosed are a frame assembly (120) and a display device (100). The frame assembly (120) comprises a back plate (121), a first frame (123) and a fixed assembly (127), wherein the back plate (121) comprises at least one side edge (121a), the side edge (121a) having an extension direction (D1); the first frame (123) is combined with the back plate (121); and the fixed assembly (127) comprises at least one first combination structure (127a), at least one second combination structure (127b) and a connector (127c), the first combination structure (127a) being provided on the side edge (121a) of the back plate (121), the second combination structure (127b) being provided on the side edge (123a) of the first frame (123), and the connector (127d) penetrating in the extension direction (D1) and being combined with the first combination structure (127a) and the second combination structure (127b).
Answer: A