# US 12,004,617 B2 · Trolley case with a charging device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,617 B2 - Document ID: US12004617B2 - Status: Granted - Kind: B2 - Application number: 16/608,232 - Filed: 2018-04-13 - Published: 2021-04-01 - Granted: 2024-06-11 - Earliest claimed: 2017-04-27 - Applicants: Li Zhijian - Inventors: Li Zhijian - Web page: https://patentgrep.com/patent/US12004617B2 ## CPC - A45C 13/001: {Accessories} - A45C 15/00: Purses, bags, luggage or other receptacles covered by groups A45C1/00 - A45C11/00, combined with other {objects or} articles (A45C1/08, A45C3/14, {A45C11/321, A45C13/28} take precedence) - A45C 5/04: Trunks; Travelling baskets - A45C 5/14: with built-in rolling means - A45C 13/262: {for wheeled luggage} - G01G 19/021: {having electrical weight-sensitive devices (G01G19/04 - G01G19/07 take precedence)} - G01G 23/36: Indicating the weight by electrical means, e.g. using photoelectric cells - A45C 13/28: Combinations of handles with other devices - A45C 2013/267: {the handle being slidable, extractable and lockable in one or more positions} - G01G 19/58: combined with handles of suit-cases or trunks - A45C: PURSES; LUGGAGE; HAND CARRIED BAGS - G01G: WEIGHING (sorting by weighing B07C5/16) ## Abstract The present invention is directed to a trolley case with a charging device, which comprises a case body, a pull rod frame mounted on the case body and a traveling wheel mechanism installed at the bottom of the case body; the pull rod frame is provided with a telescopic pull rod used for dragging the case body, the pull rod frame is provided with a charger accommodating cavity positioned in the middle of the pull rod and used for placing a charging device, the upper part of the charger accommodating cavity is provided with an opening, sliding chutes are arranged on both sides of the opening, and a sliding cover used to cover or open the opening is slidably arranged in the sliding chutes. The independent storage position of the external charging device of the present invention is convenient for taking the charging device at any time, and the setting of the sliding cover prevents the charging device from falling out easily; the spring can eject the charging device and can make the charger accommodating cavity adapted to charging devices of various specifications, the specifications of the charging device are proportional to the compression deformation of the spring, the larger the charging device is, the more greatly the spring is compressed, and the smaller the charging device is, the more slightly the spring is compressed. ## Claims ### Claim 1 A trolley case with a charging device, comprising: a case body, a pull rod frame mounted on the case body and a traveling wheel mechanism installed at the bottom of the case body; the pull rod frame is provided with a telescopic pull rod used for dragging the case body, the pull rod frame is provided with a charger accommodating cavity positioned in the middle of the pull rod and used for placing a charging device, the upper part of the charger accommodating cavity is provided with an opening, chutes are arranged on both sides of the opening, and a cover used to cover or open the opening is arranged in the chutes. ### Claim 2 (depends on 1) The trolley case with a charging device according to claim 1, comprising: elastic lugs on both sides of the cover, protrusions matched with the elastic lugs for limiting and locking the cover arranged on an inner side of an inner wall of the chutes, a lug on an outer side of the inner wall of the chute that prevents the cover from completely out of the chute, and an arc-shaped protrusion on the cover. ### Claim 3 (depends on 1) The trolley case with a charging device according to claim 1, comprising an elastic piece accommodating cavity for installing an elastic piece is arranged at the bottom of the charger accommodating cavity, and a spring for ejecting the charging device is arranged in the elastic piece accommodating cavity. ### Claim 4 (depends on 1) The trolley case with a charging device according to claim 1, further comprising a buffer foam mounted on the inner wall of the charger accommodating cavity. ### Claim 5 (depends on 1) The trolley case with a charging device according to claim 1, wherein the case body is provided with an umbrella groove for placing umbrellas. ### Claim 6 (depends on 1) The trolley case with a charging device according to claim 1, wherein the cover is provided with a charging port for inserting a USB connector. ### Claim 7 (depends on 1) The trolley case with a charging device according to claim 1, wherein the traveling wheel mechanism comprises a front traveling wheel set arranged at both ends of the front side of the bottom of the case body and a rear traveling wheel set arranged at both ends of the rear side of the bottom of the case body, the rear traveling wheel set is provided with a driving mechanism for driving the rear traveling wheel set to roll, and the driving mechanism is connected with a button arranged on the case body for controlling a switch. ### Claim 8 (depends on 7) The trolley case with a charging device according to claim 7, wherein the front traveling wheel set is a universal wheel, the rear traveling wheel set is a directional wheel, the rear traveling wheel set comprises two rear traveling wheels respectively arranged at two ends of the rear side of the case body and a rotating shaft fixedly connected with the two rear traveling wheels, the rotating shaft is coaxially provided with a first sprocket, the driving mechanism comprises a driving motor arranged at the bottom of the case body and an output sprocket arranged on the driving motor, and the output sprocket is rotatably connected with the first sprocket to drive the first sprocket to rotate so as to drive the rear traveling wheel to roll. ### Claim 9 (depends on 8) The trolley case with a charging device according to claim 8, characterized in that comprising a micro generator arranged at the bottom of the case body, and the micro generator is electrically connected with the charging device so as to store electric energy in the charging device; the rotating shaft is also coaxially provided with a second sprocket, the micro generator is provided with an input sprocket, and the second sprocket is rotatably connected with the input sprocket to drive the input sprocket to rotate so as to drive the micro generator to generate electricity. ### Claim 10 (depends on 1) The trolley case with a charging device according to claim 1, wherein the trolley case further comprises a pressure sensor along a bottom portion of the case body for measuring the weight of the trolley case, a controller and a display along a top portion of the case body, wherein the pressure sensor is electrically connected with the controller for transmitting pressure signals to the controller, and the controller is electrically connected with the display for displaying the pressure signals received from the pressure sensor. ### Claim 11 (depends on 1) The trolley case with a charging device according to claim 1, wherein the middle of the bottom of the case body is rotatably provided with a measuring block, a pressure sensor is installed on the measuring block, the height of the measuring block is higher than the height of the traveling wheel mechanism and a display is arranged on the case body.