Folding pedal trolley case

Abstract

The present invention relates to a trolley case, and in particular to a foldable pedal-driven trolley case. The trolley case comprises a handlebar assembly, a steering wheel, a folding joint, a riding pedal, a gear transmission gearbox, a spline-type sliding clutch, a main frame, a sub-frame, a transmission shaft, a support tank body, a rear wheel and a rear gear transmission system; the steering wheel is installed at the bottom of the handlebar, the handlebar is hinged to one end of the sub-frame through a folding joint, and the other end of the sub-frame is hinged to the main frame; the riding pedal is connected to the gear transmission gearbox, the gear transmission gearbox is connected or disconnected to the transmission shaft through a spline-type sliding clutch, the transmission shaft is connected to the rear gear transmission system, and the rear wheel is connected to the rear gear transmission system; the support tank body is installed on the main frame, and the handlebar assembly, the sub-frame and the main frame are placed in the support tank body after three-stage folding. The trolley case is compact and small after folding, and can realize a complete switch between pedal driving and hand-pulling and dragging, and the steering is convenient and flexible.

Description

Technical Field

[0001] The invention relates to a trolley case, in particular to a foldable pedal-driven trolley case. Background Art

[0002] As the pace of life accelerates, people are increasingly pursuing convenient and fast travel methods. However, it is inconvenient to carry heavy objects when traveling. When traveling, passengers have to drag their suitcases on foot. When carrying a large number of items, it is a great burden for passengers and makes it inconvenient for passengers to move. Traditional suitcases rely on walking to drag, which is slow and will take a certain amount of time, making it impossible for people to reach the destination in time. Although bicycles have the function of carrying objects, they are too large to be taken on trains, airplanes and other means of transportation. Moreover, because they have a small carrying capacity, they are difficult to use in long-distance or mid-distance travel.

[0003] 201710446337.9 discloses "a riding luggage box device", which makes the luggage box rideable, so that the riding structure is attached to the luggage box, and it also has the function of a hand-held pull rod of a driving trolley case, so it can be used as an ordinary box. However, there are the following shortcomings: 1. It does not have a folding function, is large in size, and is inconvenient to use. 2. It is impossible to achieve the clutch between the pedal transmission shaft and the rear wheel drive shaft, and the pedal driving and hand-pulling and towing cannot be completely separated, and it is impossible to achieve a complete switch between pedal driving and hand-pulling and towing. 3. The rear wheel steering is inconvenient. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a foldable pedal-driven trolley case. The case can be folded in three sections, is compact and small after being folded, can completely switch between pedal-driven and hand-pulled driving, and is convenient and flexible to turn.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A foldable pedal-driven trolley case comprises a handlebar assembly, a steering wheel, a folding joint, a riding pedal, a gear transmission gearbox, a spline type sliding clutch, a main frame, a sub-frame, a transmission shaft, a support tank body, a rear wheel and a rear gear transmission system; the steering wheel is mounted at the bottom of the handlebar, the handlebar is hinged to one end of the sub-frame through a folding joint, and the other end of the sub-frame is hinged to the main frame; the riding pedal is connected to the gear transmission gearbox, the gear transmission gearbox is connected or disconnected to the transmission shaft through a spline type sliding clutch, the transmission shaft is connected to the rear gear transmission system, and the rear wheel is connected to the rear gear transmission system; the support tank body is mounted on the main frame, and the handlebar assembly, the sub-frame and the main frame are placed in the support tank body after being folded in three stages.

[0007] The handlebar assembly is a telescopic structure, including a T-shaped handlebar and a sleeve. The T-shaped handlebar is installed in the sleeve. The T-shaped handlebar moves along the sleeve to achieve the extension or shortening of the handlebar. After the handlebar is shortened, it can be completely placed in the supporting groove body.

[0008] The folding joint is provided with a fixing lock.

[0009] The transmission shaft is a universal joint transmission shaft.

[0010] The rear gear transmission system includes a large bevel gear shaft, a small bevel gear and a rear wheel shaft; the large bevel gear shaft is connected to the transmission shaft, and the small bevel gear is installed on the rear wheel shaft. The large bevel gear and the small bevel gear of the large bevel gear shaft are meshed at 45 degrees to achieve a 90-degree change in torque for transmission, and the two rear wheels are installed at both ends of the rear wheel shaft.

[0011] It also includes a one-way clutch bearing, the rear wheel is mounted on the one-way clutch bearing, and the one-way clutch bearing is mounted on the rear wheel shaft.

[0012] The supporting tank body is provided with a tank body adapted to the folded main frame, the auxiliary frame and the handlebar assembly, and the folded main frame, the auxiliary frame and the handlebar assembly are placed in the tank body.

[0013] The utility model also comprises a luggage box, and the luggage box is fixed on the supporting slot body.

[0014] The spline sliding clutch comprises a sleeve, a main transmission shaft, a spring, a secondary shaft and a clutch switch; the main transmission shaft is connected to the gear transmission gearbox, the spring is installed on the main transmission shaft, and the secondary shaft is connected to the transmission shaft; when the main frame is folded, the main frame toggles the clutch switch to drive the main transmission shaft to slide, and the transmission of the gear transmission gearbox and the transmission shaft is disconnected; when the main frame is laid flat, the main transmission shaft is reset under the elastic force of the spring, and the transmission of the gear transmission gearbox and the transmission shaft is connected.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The handlebar is hinged to one end of the sub-frame through a folding joint, and the other end of the sub-frame is hinged to the main frame. The support tank is installed on the main frame. The handlebar assembly, sub-frame and main frame are placed in the support tank after three-stage folding; the three-stage folding makes it compact and small after folding, which is easy to carry on trains, airplanes and other means of transportation.

[0017] 2. The gear transmission gearbox is connected or disconnected with the transmission shaft through a spline sliding clutch, realizing the clutch of the pedal transmission shaft and the rear wheel drive shaft, and the pedal driving and hand pulling and towing can be completely separated, which can realize the complete switch between pedal driving and hand pulling and towing.

[0018] 3. The rear wheel is installed on the one-way clutch bearing, and the one-way clutch bearing is installed on the rear wheel axle; the rear wheel steering is convenient and flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention (excluding the suitcase);

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from another angle (excluding the suitcase and the supporting trough);

[0021] Figure 3 is a side view of the present invention;

[0022] Figure 4 It is a schematic diagram of the folded state of the present invention (excluding the luggage case and the supporting trough);

[0023] Figure 5 is another schematic diagram of the present invention in a folded state (excluding the luggage case and the supporting trough);

[0024] Figure 6 This is a schematic diagram of the towing state of the present invention;

[0025] Figure 7 It is a schematic diagram of the present invention in a storage state in which the handlebars are completely folded and retracted into the support groove;

[0026] Figure 8 It is a schematic diagram of the structure of the spline type sliding clutch of the present invention;

[0027] Fig. 9 It is a schematic diagram of the structure of the rear gear transmission system of the present invention;

[0028] Fig.10 It is a schematic diagram of the structure of the gear transmission gearbox of the present invention.

[0029] In the figure: 1-handlebar assembly 2-steering wheel 3-folding joint 4-riding pedal 5-gear transmission gearbox 6-spline type folding automatic clutch 7-main frame 8-sub-frame 9-drive shaft 10-support trough 11-rear wheel 12-rear gear transmission system 13-luggage box 14-one-way clutch bearing 101-T-type handlebar 102-sleeve 103-fixing mechanism 301-fixing lock 401-pedal shaft 501-pedal bevel gear 502-bevel gear shaft 601-sleeve 602-main transmission shaft 603-spring 604-sub-shaft 605 clutch switch 1001-trough 1002-seat plate 1003-notch 1201-large bevel gear shaft 1202-small bevel gear 1203-rear wheel shaft DETAILED DESCRIPTION

[0030] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0031] Example:

[0032] like Figure 1-7 As shown, a foldable pedal-driven trolley case includes a handlebar assembly 1, a steering wheel 2, a folding joint 3, a riding pedal 4, a gear transmission gearbox 5, a spline sliding clutch 6, a main frame 7, a subframe 8, a transmission shaft 9, a support tank body 10, a rear wheel 11 and a rear gear transmission system 12. It also includes a luggage box 13, which is fixed on the support tank body 10.

[0033] The handlebar assembly 1 is a telescopic structure, including a T-shaped handlebar 101 and a sleeve 102. The vertical rod part of the T-shaped handlebar 101 is installed in the sleeve 102. The T-shaped handlebar 101 moves along the sleeve 102 to achieve the extension or shortening of the handlebar. After the handlebar is shortened, it can be completely placed in the support groove 10. A fixing mechanism 103 is also provided, and the handlebar is fixed by the fixing mechanism 103 after extension or shortening. The steering wheel 2 is installed at the bottom of the sleeve 102.

[0034] The handlebar assembly 1 is hinged to one end of the auxiliary frame 8 via a folding joint 3, and the folding joint 3 is provided with a fixing lock 301. The other end of the auxiliary frame 8 is hinged to the main frame 7.

[0035] like Fig.10 As shown, the gear transmission gearbox 5 includes a pedal bevel gear 501 and a bevel gear shaft 502. The pedal bevel gear 501 is installed on the pedal shaft 401 of the riding pedal 4. The bevel gears of the pedal bevel gear 501 and the bevel gear shaft 502 are meshed at 45 degrees to achieve a 90-degree change in torque for transmission. The bevel gear shaft 502 is connected to the spline sliding clutch 6.

[0036] like Figure 8 As shown, the spline sliding clutch 6 includes a sleeve 601, a main transmission shaft 602, a spring 603, a secondary shaft 604 and a clutch switch 605. The main transmission shaft 602 is connected to the bevel gear shaft 502 of the gear transmission gearbox 5, the spring 603 is installed on the main transmission shaft 602, and the secondary shaft 604 is connected to the transmission shaft 19; when the main frame 7 is folded, the main frame 7 toggles the clutch switch 605, drives the main transmission shaft 602 to slide, and the transmission between the gear transmission gearbox 5 and the transmission shaft 9 is disconnected; when the main frame 7 is laid flat, the main transmission shaft 602 is reset under the elastic force of the spring 603, and the transmission between the gear transmission gearbox 5 and the transmission shaft 9 is connected.

[0037] like Fig. 9As shown, the rear gear transmission system 12 includes a large bevel gear shaft 1201, a small bevel gear 1202 and a rear wheel shaft 1203. The large bevel gear shaft 1201 is connected to the transmission shaft 9, and the small bevel gear 1202 is installed on the rear wheel shaft 1203. The large bevel gear of the large bevel gear shaft 1201 and the small bevel gear 1202 are meshed at 45 degrees, so that the torque is changed by 90 degrees for transmission. It also includes a one-way clutch bearing 15, and the rear wheel 11 is installed on the one-way clutch bearing 14, and the one-way clutch bearing 14 is installed on the rear wheel shaft 1203, so that the rear wheel 11 is convenient and flexible to turn.

[0038] like Figure 1-7 As shown, the support tank body 10 is installed on the main frame 7, and the support tank body 10 is provided with a tank body 1001 adapted to the folded main frame 7, the sub-frame 8 and the handlebar assembly 1. The handlebar assembly 1, the sub-frame 8 and the main frame 7 are placed in the tank body 1001 after three-stage folding. A seat plate 1002 is provided on the top of the support tank body 10, and a notch 1003 adapted to the T-shaped handlebar 101 is provided on the seat plate 1002, and the stem of the T-shaped handlebar 101 can be completely placed in the tank body 1001.

[0039] The invention has a three-stage folding method, which is compact and small after folding, and is easy to carry on transportation tools such as trains and airplanes. It can realize a complete switch between pedaling and hand-pulling, which is convenient for riding or towing. The rear wheel steering is convenient and flexible.

[0040] The above embodiments are implemented based on the technical solution of the present invention, and detailed implementation methods and specific operation processes are given, but the protection scope of the present invention is not limited to the above embodiments. The methods used in the above embodiments are conventional methods unless otherwise specified.

Claims

1. A foldable pedal-driven suitcase, characterized in that: It includes a handlebar assembly, a steering wheel, a folding joint, a riding pedal, a gear transmission gearbox, a spline sliding clutch, a main frame, a sub-frame, a transmission shaft, a support tank body, a rear wheel and a rear gear transmission system; the steering wheel is installed at the bottom of the handlebar, the handlebar is hinged to one end of the sub-frame through a folding joint, and the other end of the sub-frame is hinged to the main frame; the riding pedal is connected to the gear transmission gearbox, the gear transmission gearbox is connected or disconnected to the transmission shaft through a spline sliding clutch, the transmission shaft is connected to the rear gear transmission system, and the rear wheel is connected to the rear gear transmission system; the support tank body is installed on the main frame, and the handlebar assembly, the sub-frame and the main frame are placed in the support tank body after being folded in three stages; The rear gear transmission system includes a large bevel gear shaft, a small bevel gear and a rear wheel shaft; The large bevel gear shaft is connected to the transmission shaft, and the small bevel gear is installed on the rear wheel shaft. The large bevel gear of the large bevel gear shaft meshes with the small bevel gear at 45 degrees to achieve a 90-degree change in torque for transmission. The two rear wheels are installed at both ends of the rear wheel shaft. Also included is a one-way clutch bearing, the rear wheel is mounted on the one-way clutch bearing, and the one-way clutch bearing is mounted on the rear wheel shaft; The spline sliding clutch comprises a sleeve, a main transmission shaft, a spring, a secondary shaft and a clutch switch; the main transmission shaft is connected to the gear transmission gearbox, the spring is installed on the main transmission shaft, and the secondary shaft is connected to the transmission shaft; when the main frame is folded, the main frame toggles the clutch switch to drive the main transmission shaft to slide, and the transmission of the gear transmission gearbox and the transmission shaft is disconnected; when the main frame is laid flat, the main transmission shaft is reset under the elastic force of the spring, and the transmission of the gear transmission gearbox and the transmission shaft is connected.

2. The foldable pedal-operated trolley case according to claim 1, characterized in that: The handlebar assembly is a telescopic structure, including a T-shaped handlebar and a sleeve. The T-shaped handlebar is installed in the sleeve. The T-shaped handlebar moves along the sleeve to achieve the extension or shortening of the handlebar. After the handlebar is shortened, it can be completely placed in the supporting groove body.

3. The foldable pedal-operated suitcase according to claim 1, characterized in that: The folding joint is provided with a fixing lock.

4. The foldable pedal-operated suitcase according to claim 1, characterized in that: The transmission shaft is a universal joint transmission shaft.

5. The foldable pedal-operated suitcase according to claim 1, characterized in that: The supporting tank body is provided with a tank body adapted to the folded main frame, the auxiliary frame and the handlebar assembly, and the folded main frame, the auxiliary frame and the handlebar assembly are placed in the tank body.

6. The foldable pedal-operated suitcase according to claim 1, characterized in that: The utility model also comprises a luggage box, and the luggage box is fixed on the supporting slot body.

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