A telescopic walking wheel device for a trolley suitcase

Abstract

A telescopic walking wheel device for a trolley suitcase comprises a chassis, a connecting shaft, a transmission rod, a motor, a battery and a walking wheel, wherein the connecting shaft is arranged parallel to each other on both sides of the lower part of the chassis, the walking wheels are arranged at the front and rear ends of the connecting shaft, the transmission rod is arranged horizontally on the upper inner side of the chassis, the motor is arranged vertically on the front lower side of the transmission rod in the chassis, and the battery is arranged on one side of the motor in the chassis; the chassis is a rectangular shell structure, and walking wheel grooves are evenly arranged at the four corners under the chassis; the present invention adopts the above technical scheme and has achieved good results: the telescopic walking wheel device for the trolley suitcase realizes the electric lifting of the walking wheel by arranging the walking wheel on a rotatable connecting shaft, which not only avoids the sliding of the suitcase when it is placed, but also reduces the scratch damage of the walking wheel during transportation, significantly improves the strength of the suitcase, and brings convenience to the user.

Description

Technical Field

[0001] The invention relates to the field of luggage manufacturing and discloses a telescopic walking wheel device for a trolley suitcase. Background Art

[0002] Trolley cases are a necessity for frequent business trips and are loved by everyone for their convenience and safety. In order to facilitate walking and dragging, existing trolley cases usually have two or four universal running wheels at the bottom of the case, which are very convenient to use. However, the use of universal running wheels has both advantages and disadvantages. People on business trips often take high-speed trains, airplanes and other means of transportation. During transportation, since the universal running wheels of the trolley cases are relatively prominent, they are very easy to be damaged during transportation. In mild cases, they are scratched or directly damaged and cannot be used, which brings great inconvenience to the use. At the same time, when the universal running wheels are stationary, they are prone to drift and slide, causing accidental damage to the case or bringing danger to the surroundings. Therefore, a device is needed to solve the problem that the universal running wheels of existing suitcases are easily scratched and damaged during transportation and the suitcases are easily damaged by sliding when stationary. Summary of the invention

[0003] The invention provides a telescopic running wheel device for a trolley suitcase, which is used to solve the problems that the universal running wheels of the existing suitcase are easily scratched and damaged during transportation and the suitcase is easily damaged by sliding when it is stationary.

[0004] The purpose of the present invention is achieved by adopting the following technical solutions:

[0005] A telescopic walking wheel device for a trolley suitcase comprises a chassis, a connecting shaft, a transmission rod, a motor, a battery and a walking wheel, wherein the connecting shaft is arranged in parallel on both sides of the lower part of the chassis, the walking wheels are arranged at the front and rear ends of the connecting shaft, the transmission rod is arranged horizontally on the upper inner side of the chassis, the motor is arranged vertically on the front lower side of the transmission rod in the chassis, and the battery is arranged on one side of the motor in the chassis; the chassis is a rectangular shell structure, and walking wheel grooves are evenly arranged at the four corners below the chassis, and bearing seats are correspondingly arranged on the front and rear sides of the inner shell of the walking wheel grooves, and bearings are arranged in the bearing seats. A USB interface is arranged on one side of the front of the shell, and the rear of the USB interface is connected to the battery through electric wires; the front and rear sides of the connecting shaft are arranged in the bearings at the lower part of the chassis, a fan-shaped worm gear is arranged in the middle of the connecting shaft, spline shafts are arranged on the outer circles at both ends of the connecting shaft, threaded holes are arranged on the two end surfaces of the connecting shaft, and fixing bolts are arranged in the threaded holes.

[0006] The walking wheel is composed of a universal wheel and a rotating seat, the universal wheel is arranged at the lower end of the rotating seat, and the rotating seat is arranged at both ends of the connecting shaft; the lower part of the rotating seat is a rotating disk connected to the universal wheel, and the upper part of the rotating disk is provided with a connecting handle, and a spline through hole is provided in front of the connecting handle, and the spline through hole is matched and connected with the spline shafts at both ends of the connecting shaft.

[0007] The transmission rod is a slender shaft structure, with travel wheel worms at both ends of the transmission rod, the travel wheel worms meshing with the fan-shaped worm wheels on the connecting shafts at both sides, and a transmission rod worm wheel is arranged in the middle of the transmission rod.

[0008] A motor worm is arranged at the upper end of the motor main shaft, the motor worm is meshed with a transmission rod worm wheel in the middle part of the transmission rod, and the motor is connected to the battery through electric wires.

[0009] The present invention adopts the above technical scheme and has achieved good results: the telescopic walking wheel device of the trolley suitcase sets the walking wheel on a rotatable connecting shaft, thereby realizing the electric lifting of the walking wheel, which not only avoids the sliding of the suitcase, but also reduces the scratch damage of the walking wheel during transportation, significantly improves the strength of the suitcase, and brings convenience to the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention.

[0011] Figure 2 for Figure 1 Bottom view of .

[0012] Figure 3 for Figure 1 Rear view of.

[0013] In the figure: 1. chassis, 2. traveling wheel worm, 3. universal wheel, 4. fan-shaped worm gear, 5. swivel seat, 6. transmission rod, 7. battery, 8. transmission rod worm gear, 9. motor worm, 10. motor, 11. traveling wheel groove, 12. spline shaft, 13. trolley suitcase, 14. connecting shaft, 15, USB interface. DETAILED DESCRIPTION

[0014] The present invention is described with reference to the accompanying drawings.

[0015] like Figure 1 , Figure 2 , Figure 3The telescopic walking wheel device of a trolley suitcase shown in the figure comprises a chassis 1, a connecting shaft 14, a transmission rod 6, a motor 10, a battery 7 and a walking wheel. The chassis 1 is a rectangular shell structure, and walking wheel grooves 11 are evenly arranged at the four corners below the chassis 1. Bearing seats are correspondingly arranged on the front and rear sides of the inner shell of the walking wheel groove 11, and a bearing is arranged in the bearing seat. A USB interface 15 is arranged on one side of the front of the shell, and the rear of the USB interface 15 is connected to the battery 7 through an electric wire; the connecting shaft 14 is arranged on both sides of the lower part of the chassis 1 in parallel on the left and right sides, and the front and rear sides of the connecting shaft 14 are arranged in the bearing of the lower part of the chassis 1. A fan-shaped worm gear 4 is arranged in the middle of the connecting shaft 14, and a spline shaft 12 is arranged on the outer circle of both ends of the connecting shaft 14. Threaded holes are arranged on the two end surfaces of the connecting shaft 14, and fixing bolts are arranged in the threaded holes; the walking wheel is arranged at the front and rear ends of the connecting shaft 14, and the walking wheel is composed of a universal wheel 3 and a rotating seat 5. The universal wheel 3 is arranged at the lower end of the rotating seat 5. The rotating seat 5 is arranged at both ends of the connecting shaft 14, and the lower part of the rotating seat 5 is a rotating disk connected to the universal wheel 3. The upper part of the rotating disk is provided with a connecting handle, and a spline through hole is provided in front of the connecting handle. The spline through hole is matched and connected with the spline shafts 12 at both ends of the connecting shaft 14; the transmission rod 6 is horizontally arranged on the upper inner side of the chassis 1, and the transmission rod 6 is a slender shaft structure. The two ends of the transmission rod 6 are provided with a walking wheel worm 2, and the walking wheel worm 2 is meshed with the fan-shaped worm gear 4 on the connecting shaft 14 on both sides, and a transmission rod worm gear 8 is arranged in the middle of the transmission rod 6; the motor 10 is vertically arranged on the lower front side of the transmission rod 6 in the chassis 1, and a motor worm 9 is provided on the upper end of the main shaft of the motor 10, and the motor worm 9 is meshed with the transmission rod worm gear 8 in the middle of the transmission rod 6, and the motor 10 is connected to the battery 7 through an electric wire; the battery 7 is arranged on one side of the motor 10 in the chassis 1, and while providing power to the motor 10, it can also power external electrical appliances through the USB interface 15 on the side of the chassis 1.

[0016] When the trolley case 13 needs to be used for walking, first, the switch on the trolley handle of the trolley case 13 is connected to the battery 7 through an electric wire, the switch controls the motor 10 to rotate, the motor 10 drives the motor worm 9, the motor worm 9 drives the transmission rod worm wheel 8 on the transmission rod 6 to rotate, the transmission rod worm wheel 8 drives the walking wheel worm 2 at both ends to rotate, the walking wheel worm 2 drives the fan-shaped worm wheel 4 on the connecting shaft 14 to rotate, the fan-shaped worm wheel 4 drives the connecting shaft 14 to rotate, the connecting shaft 14 drives the rotating seat 5 on the walking wheels at both ends to rotate, and finally the rotating seat 5 rotates the universal wheel 3 to the lower end to touch the ground, and then the trolley case 13 can be pulled to walk by the universal wheel 3; if it is necessary to stop placing the trolley case 13, the switch on the trolley handle is controlled, and the above steps are reversed to operate the above steps, so that the universal wheel 3 can be rotated and retracted into the walking wheel groove 11, so that the trolley case 13 can be firmly placed on the ground; thereby realizing the convenient contraction and raising of the walking wheel of the trolley case.

[0017] Parts of the present invention not described in detail are prior art.

Claims

1. A telescopic walking wheel device for a trolley suitcase, comprising a chassis, a connecting shaft, a transmission rod, a motor, a battery and a walking wheel, wherein: The connecting shaft is arranged parallel to each other on both sides of the lower part of the chassis, the running wheels are arranged at the front and rear ends of the connecting shaft, the transmission rod is arranged horizontally on the upper inner side of the chassis, the motor is arranged vertically on the front lower side of the transmission rod in the chassis, and the battery is arranged on one side of the motor in the chassis; the chassis is a rectangular shell structure, and the four corners below the chassis are evenly provided with running wheel grooves, and the inner shell of the running wheel groove is provided with bearing seats correspondingly arranged at the front and rear, and the bearings are arranged in the bearing seats, and a USB interface is arranged on one side of the front of the shell, and the rear of the USB interface is connected to the battery through wires; the front and rear sides of the connecting shaft are arranged in the bearings at the lower part of the chassis, a fan-shaped worm gear is arranged in the middle of the connecting shaft, and spline shafts are arranged on the outer circles of the two ends of the connecting shaft, and threaded holes are arranged on the two end surfaces of the connecting shaft, and fixing bolts are arranged in the threaded holes; The walking wheel is composed of a universal wheel and a rotating seat, the universal wheel is arranged at the lower end of the rotating seat, and the rotating seat is arranged at both ends of the connecting shaft; the lower part of the rotating seat is a rotating disk connected to the universal wheel, the upper part of the rotating disk is provided with a connecting handle, the front of the connecting handle is provided with a spline through hole, and the spline through hole is matched and connected with the spline shafts at both ends of the connecting shaft; The transmission rod is a slender shaft structure, with travel wheel worms at both ends of the transmission rod, the travel wheel worms meshing with the fan-shaped worm gears on the connecting shafts at both sides, and a transmission rod worm gear is arranged in the middle of the transmission rod; A motor worm is arranged at the upper end of the motor main shaft, the motor worm is meshed with a transmission rod worm wheel in the middle part of the transmission rod, and the motor is connected to the battery through electric wires.

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