Tilt-and-lift ride-on suitcase

Abstract

The present invention relates to the technical field of ride-on suitcases, and in particular to a tiltable, liftable ride-on suitcase. The suitcase comprises a suitcase body, rollers at the bottom of the suitcase body, a riding front fork, and a riding front wheel below the riding front fork. The riding front fork is retracted and extended relative to the suitcase body in the riding direction via a linear telescopic mechanism mounted on the suitcase body. The linear telescopic mechanism is tilted downward in the riding direction, so that the riding front fork lifts the riding front wheel off the ground while retracting backward. The beneficial effects of the present invention are as follows: the linear telescopic mechanism of the tilted riding front fork allows the riding front wheel to be raised and lowered while simultaneously retracting and extending. When the riding front wheel is retracted in a non-riding state, it does not interfere with hand-pushing the suitcase in that non-riding state. By providing a retractable and retractable device for the universal wheels, the flexibility, ease, convenience, and reliability of a traditional suitcase with universal wheels are retained when pushed by hand; when the universal wheels are retracted during riding, interference with the universal wheels is avoided, making riding safe, stable, and efficient.

Description

Technical Field

[0001] The invention relates to the technical field of ride-on suitcases, in particular to a ride-on suitcase capable of tilting and lifting. Background Art

[0002] Existing rideable suitcases generally include a suitcase body, a riding rear wheel at the bottom of the suitcase body, a riding front fork, and a riding front wheel below the riding front fork. The riding front fork is retracted and retracted horizontally back and forth relative to the suitcase body through a horizontally retractable telescopic sleeve and an electric push rod that drives the telescopic sleeve to retract, so that the suitcase is in a riding state or a non-riding state.

[0003] The user controls the electric push rod to extend the riding front fork to put the suitcase into a riding state. In the riding state, the user rides on the suitcase body to drive the suitcase and controls the riding direction through the handlebar on the riding front fork.

[0004] However, a problem with this suitcase structure is that when the user controls the electric push rod to retract the riding front fork and puts the suitcase in a non-riding state, the riding front wheel and the riding rear wheel on the suitcase body are fixed-direction wheels and cannot automatically turn in the direction of the user's dragging like the universal wheels at the bottom of an ordinary suitcase. This makes it difficult for the user to turn the suitcase while dragging it, which is not conducive to dragging the suitcase in a non-riding state. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a rideable suitcase that can be tilted and lifted, so as to prevent the riding front wheel from affecting the dragging of the suitcase when the suitcase is not in the riding state.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a tiltable and liftable rideable suitcase, including a suitcase body, rollers at the bottom of the suitcase body that support the rolling of the suitcase body, a riding front fork and a riding front wheel below the riding front fork. The riding front fork is extended and retracted back and forth relative to the suitcase body in the riding direction through a linear telescopic mechanism installed on the suitcase body. The linear telescopic mechanism is arranged to be tilted downward in the riding direction, so that the riding front fork can lift the riding front wheel off the ground while retracting backward.

[0007] In order to facilitate the user to push the box when not riding, and to avoid the universal wheels interfering with the riding of the box when riding, it is further defined that the rollers at the bottom of the box include more than one universal wheels, which are used to facilitate the box to turn in the direction of the user's pushing when the riding front fork is retracted, and the universal wheels are retracted and extended by a retracting device.

[0008] In order to simplify the operating steps of switching the suitcase between the riding state and the non-riding state, it is further specified that the retractable device of the universal wheel is linked with the riding front fork or the linear telescopic mechanism of the riding front fork, so that when the riding front fork is extended, the universal wheel is retracted through the retractable device in a linked manner, and when the riding front fork is retracted, the universal wheel is extended through the retractable device in a linked manner.

[0009] It is further defined that the rollers at the bottom of the box include two directional riding rear wheels and two universal wheels, the two riding rear wheels are arranged in the same row in the left and right directions, the two universal wheels are arranged in the same row in the left and right directions, and the universal wheels are located between the riding rear wheels and the riding front wheels in the riding direction.

[0010] In order to reduce the space occupied by the linear telescopic mechanism of the riding front fork in the box, it is further defined that the riding front fork has a wheel cover frame covering the rear side of the riding front wheel, and the telescopic end of the linear telescopic mechanism is connected to the bottom of the wheel cover frame, so as to lower the height of the connection point between the linear telescopic mechanism and the riding front fork.

[0011] It is further defined that the linear telescopic mechanism is an electric linear telescopic mechanism.

[0012] It is further defined that the electric linear telescopic mechanism includes a motor, a screw drive mechanism consisting of a screw rod and a nut, and a telescopic sleeve. The telescopic sleeve is installed on the box body. The motor drives the telescopic sleeve to extend and retract through the screw drive mechanism, and the extended end of the telescopic sleeve drives the front fork to extend and retract.

[0013] It is further defined that the telescopic sleeve is a two-section telescopic sleeve, including a stroke guide tube and a front fork telescopic tube. The front fork telescopic tube is inserted in the stroke guide tube for telescopic operation. The stroke guide tube is fixed obliquely in the box. The screw drive mechanism is located in the stroke guide tube and the front fork telescopic tube. The motor is arranged at the rear end of the stroke guide tube. The nut of the screw drive mechanism is located at the rear end of the front fork telescopic tube. One end of the screw in the stroke guide tube is connected to the motor drive, and the other end of the screw passes through the nut and enters the front fork telescopic tube. The front end of the front fork telescopic tube is connected to the riding front fork, and the motor drives the front fork telescopic tube to extend out of the box through the screw drive mechanism.

[0014] It is further defined that the linkage device is a pull wire, which penetrates from the front end of the travel guide tube into the gap between the travel guide tube and the front fork telescopic tube to drive and cooperate with the front fork telescopic tube.

[0015] It is further defined that the inner cavity of the stroke guide tube is divided into a middle guide cavity and wire pulling cavities on both sides. The front fork telescopic tube is inserted into the guide cavity. The wires of the retracting and extending devices of the universal wheels on the left and right sides enter the stroke guide tube through the wire pulling cavities on each side and cooperate with the front fork telescopic tube drive.

[0016] It is further defined that the telescopic stroke of the universal wheel is smaller than the telescopic stroke of the riding front fork, and the driving cooperation between the front fork telescopic tube and the pull cable reserves an empty stroke section, which is used to enable the front fork telescopic tube to tighten the pull cable only in the rear part of the stroke when it retracts backward, thereby linking the retraction and extension device of the universal wheel.

[0017] It is further defined that the retractable device of the universal wheel is a linear telescopic mechanism, the linkage device is a pull wire, the retractable device lowers the universal wheel under the action of the pull wire, and resets and retracts the universal wheel under the action of a reset spring.

[0018] It is further defined that the retractable and extending device of the universal wheel specifically includes a retractable and extending guide tube, a guide rod and a return spring. The guide rod is inserted into the retractable and extending guide tube for extension and retraction. The return spring drives the guide rod to reset and retract the universal wheel. The pull wire is connected to the guide rod, driving the guide rod to overcome the elastic force of the return spring to release the universal wheel.

[0019] It is further defined that the return spring and the guide rod are arranged side by side in the tube cavity of the retractable guide tube, and there is also a top plate in the tube cavity of the retractable guide tube. The top plate is located above the return spring and the guide rod, and the guide rod is fixed to the top plate. The two ends of the return spring act on the top plate and the bottom of the inner cavity of the retractable guide tube respectively, and the pull wire passes through the return spring from bottom to top and is connected to the top plate.

[0020] It is further defined that the bottom of the retractable guide tube has a universal wheel fixing seat, the retractable device is fixed to the bottom of the box body through the universal wheel fixing seat, and the top of the retractable guide tube is closed by an end cover.

[0021] It is further defined that the pull wire is guided by a pull wire sleeve sleeved on the outside thereof, and the motor drives the screw rod to rotate after the speed is changed by the gear box, or the motor is a motor with an integrated gear box.

[0022] The beneficial effect of the present invention is that, compared with a rideable suitcase in which the riding front fork is extended and retracted in parallel, the linear extension mechanism of the inclined riding front fork enables the riding front wheel to be raised and lowered while being extended and retracted, and the riding front wheel can be folded away in the non-riding state without affecting the hand-pushing of the suitcase in the non-riding state.

[0023] By setting up a retractable device for the universal wheels, the flexibility, ease, convenience and reliability of a traditional suitcase with universal wheels are retained when pushed by hand; the universal wheels are folded away when riding to avoid interference from the universal wheels, making riding safe, stable and efficient.

[0024] By arranging a linear telescopic mechanism of the electric riding front fork to link with the retracting and extending device of the universal wheel, the present invention can be conveniently and freely switched between the riding state and the hand-pushing state, which is convenient for users to travel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and examples;

[0026] Figure 1 is a front view of the rideable suitcase of the present invention in a non-riding state;

[0027] Figure 2 is a front view of the rideable suitcase of the present invention in a riding state;

[0028] Figure 3 is a perspective view of the rideable suitcase of the present invention in a non-riding state;

[0029] Figure 4 is a perspective view of the rideable suitcase of the present invention in a riding state;

[0030] Figure 5 is a cross-sectional view of the rideable suitcase of the present invention in a non-riding state;

[0031] Figure 6 yes Figure 3 A cross-sectional view of the linear telescopic mechanism of the riding front fork;

[0032] Figure 7 is a cross-sectional view of the ride-on suitcase of the present invention when it is in a non-riding state, viewed from above;

[0033] Figure 8 is a cross-sectional view of the main components of the ride-on suitcase when not in the riding state, viewed from above;

[0034] Figure 9 is a cross-sectional view of the main components of the ride-on suitcase when not in the riding state, viewed from above;

[0035] Figure 10 It is a perspective view of the main components of the rideable suitcase with the travel guide tube cut away;

[0036] Figure 11 It is an exploded view of the riding front fork and the linear telescopic mechanism thereof of the present invention;

[0037] Figure 12 is a cross-sectional view of the universal wheel and its retractable device in a non-riding state of the present invention;

[0038] Figure 13 It is a three-dimensional diagram of the universal wheel and its retractable device in the non-riding state of the present invention;

[0039] Figure 14 is a cross-sectional view of the universal wheel and its retractable device in the riding state of the present invention;

[0040] Figure 15 It is a three-dimensional diagram of the universal wheel and its retractable device in the riding state of the present invention;

[0041] Figure 16 is a partial cross-sectional view of a top view of the universal wheel and the retractable device thereof of the present invention;

[0042] Figure 17 is an exploded view of the foldable handlebar of the present invention;

[0043] Figure 18is a schematic diagram of the foldable handlebar of the present invention in a state to be folded;

[0044] Figure 19 is a schematic diagram of the foldable handlebar of the present invention in a folded state;

[0045] Figure 20 It is a schematic diagram of the foldable handlebar of the present invention in the open state.

[0046] In the figure, 1. Box, 2. Front fork, 3. Front wheel, 4. Rear wheel, 4-1. Rear wheel mounting bracket, 5. Universal wheel, 6. Wheel cover frame, 7. Motor, 7-2. Screw, 7-3. Nut, 7-4. Travel guide tube, 7-4-1. Guide cavity, 7-4-2. Cable cavity, 7-5. Front fork telescopic tube, 7-6. Gearbox, 8. Wheel cover frame clearance slot, 9. Cable, 9-1. Wire sleeve, 9-2. Drive block, 9-3. Shift block, 9-4. Wire sleeve fixing plate, 9-5. Wire sleeve fixing nut, 10-1. Retractable guide tube, 10-2. Guide rod, 10-3. Return spring, 10-4. Top plate, 10-5. Universal wheel fixing seat, 10-6. End cover, 11. Handlebar, 12. Handle pin, 13. Locking sleeve, 14. Wire outlet, 15. Magnet. DETAILED DESCRIPTION

[0047] Example 1: Figures 1 to 20 As shown, a tiltable and liftable rideable suitcase comprises a suitcase body 1, a roller at the bottom of the suitcase body 1 for supporting the suitcase body 1 to roll, a riding front fork 2, and a riding front wheel 3 below the riding front fork 2. The riding front fork 2 is extended and retracted relative to the suitcase body 1 in the riding direction by a linear telescopic mechanism installed on the suitcase body 1. The linear telescopic mechanism is arranged to be tilted downward in the riding direction, so that the riding front fork 2 lifts the riding front wheel 3 off the ground while retracting backward. Figure 1 、 2 , 3 and 4. The angle A between the linear telescopic mechanism and the horizontal plane can generally be set to 11 degrees to 21 degrees. Figure 6 The preferred angle A between the linear telescopic mechanism and the horizontal plane is 16 degrees.

[0048] The rollers at the bottom of the box 1 include one or more universal wheels 4, which facilitate steering of the box 1 in the direction of the user's push when the front fork 2 is retracted. The universal wheels 4 are retracted and extended by a retractable device. In this embodiment, the rollers at the bottom of the box 1 specifically include two directional rear riding wheels 4 and two universal wheels 5. The two rear riding wheels 4 are arranged in the same row in the left-right direction, and the two universal wheels 5 are arranged in the same row in the left-right direction. In the riding direction, the universal wheels 5 are located between the rear riding wheels 4 and the front riding wheel 3. Specifically, the rear riding wheels 4 are fixed to the box via rear riding wheel fixing bases 4-1.

[0049] The riding front fork 2 has a wheel cover frame 6 covering the rear side of the riding front wheel 3. The telescopic end of the linear telescopic mechanism is connected to the bottom of the wheel cover frame 6, which is used to lower the height of the connection point between the linear telescopic mechanism and the riding front fork 2, thereby reducing the space occupied by the internal space of the box 1.

[0050] The linear telescopic mechanism of the riding front fork 2 is an electric linear telescopic mechanism.

[0051] like Figure 10 and 11 As shown, the electric linear telescopic mechanism includes a screw drive mechanism and a telescopic sleeve composed of a motor 7-1, a screw rod 7-2 and a nut 7-3. The telescopic sleeve is installed on the box body 1. The motor 7-1 drives the telescopic sleeve to extend and retract through the screw drive mechanism, and the extended end of the telescopic sleeve drives the riding front fork 2 to extend and retract.

[0052] The telescopic sleeve is a two-section telescopic sleeve, including a stroke guide tube 7-4 and a front fork telescopic tube 7-5. The front fork telescopic tube 7-5 is inserted in the stroke guide tube 7-4 for telescopic operation. The stroke guide tube 7-4 is fixed obliquely in the box body 1. The screw drive mechanism is located in the stroke guide tube 7-4 and the front fork telescopic tube 7-5. The motor 7-1 is arranged at the rear end of the stroke guide tube 7-4. The nut 7-3 of the screw drive mechanism is located at the rear end of the front fork telescopic tube 7-5. One end of the screw rod 7-2 in the stroke guide tube 7-4 is connected to the motor 7-1 for driving, and the other end of the screw rod 7-2 passes through the nut 7-3 and enters the front fork telescopic tube 7-5. The front end of the front fork telescopic tube 7-5 is connected to the riding front fork 2. The motor 7-1 drives the front fork telescopic tube 7-5 to extend out of the box body 1 through the screw drive mechanism.

[0053] The motor 7-1 drives the screw rod 7-2 to rotate after the speed is changed by the gear box 7-6, or the motor 7-1 is a motor with an integrated gear box 7-6.

[0054] In order to allow the front fork 2 to be close to the box body 1 after being retracted backward, a wheel cover frame clearance notch 8 is provided at the front end of the upper plane of the travel guide tube 7-4. Figure 11 .

[0055] The retractable device of the universal wheel 5 is arranged in linkage with the riding front fork 2 or the linear telescopic mechanism of the riding front fork 2, and is used for retracting the universal wheel 5 through the retractable device when the riding front fork 2 is extended, so that the box body 1 is supported on the ground by the riding front wheel 3 and the riding rear wheel 4. In addition, when the riding front fork 2 is retracted, the universal wheel 5 is released through the retractable device, so that the box body 1 is supported on the ground by the riding rear wheel 4 and the universal wheel 5.

[0056] The retractable device of the universal wheel 5 is a linear telescopic mechanism, and the linkage device is a pull wire 9. The retractable device lowers the universal wheel 5 under the action of the pull wire 9, and resets and retracts the universal wheel 5 under the action of the reset spring 10-3.

[0057] like Figure 12 、 13 As shown in Figures 14, 15 and 16, the retracting and extending device of the universal wheel 5 specifically includes a retracting and extending guide tube 10-1, a guide rod 10-2 and a reset spring 10-3. The guide rod 10-2 is inserted into the retracting and extending guide tube 10-1 for extension and retraction. The reset spring 10-3 drives the guide rod 10-2 to reset and retract the universal wheel 5. The pull wire 9 is connected to the guide rod 10-2, driving the guide rod 10-2 to overcome the elastic force of the reset spring 10-3 to release the universal wheel 5.

[0058] More specifically, the return spring 10-3 and the guide rod 10-2 are arranged side by side in the tube cavity of the retractable guide tube 10-1. There is also a top plate 10-4 in the tube cavity of the retractable guide tube 10-1. The top plate 10-4 is located above the return spring 10-3 and the guide rod 10-2. The guide rod 10-2 is fixed to the top plate 10-4, specifically by welding. The two ends of the return spring 10-3 act on the top plate 10-4 and the bottom of the inner cavity of the retractable guide tube 10-1 respectively, and the pull wire 9 passes through the return spring 10-3 from bottom to top and is connected to the top plate 10-4.

[0059] The bottom of the retractable guide tube 10-1 is provided with a universal wheel fixing seat 10-5, and the universal wheel fixing seat 10-5 is provided with a wire lead-out port 14. The wire 9 passes through the wire lead-out port 14 into the bottom of the retractable guide tube 10-1. The retractable device is fixed to the bottom of the box body 1 through the universal wheel fixing seat 10-5, and is closed at the top of the retractable guide tube 10-1 by an end cover 10-6 to prevent lubricating oil from overflowing. Specifically, the end cover 10-6 is connected to the retractable guide tube 10-1 by screws.

[0060] like Figure 8 and 9 As shown, the pull wire 9 serving as a linkage device passes from the front end of the travel guide tube 7-4 into the gap between the travel guide tube 7-4 and the front fork telescopic tube 7-5 and drives and cooperates with the front fork telescopic tube 7-5.

[0061] The inner cavity of the travel guide tube 7-4 is divided into a middle guide cavity 7-4-1 and wire pulling cavities 7-4-2 on both sides. The front fork telescopic tube 7-5 is inserted in the guide cavity 7-4-1. The wire pulling wires 9 of the retracting and extending devices of the universal wheels 5 on the left and right sides enter the travel guide tube 7-4 through the wire pulling cavity 7-4-2 on each side and cooperate with the front fork telescopic tube 7-5 drive.

[0062] In this embodiment, the rising height of the universal wheel 5 and the riding front wheel 3 is the same, both set to 50 mm. The telescopic stroke required by the universal wheel 5 is smaller than the telescopic stroke of the riding front fork 2. The driving coordination between the front fork telescopic tube 7-5 and the cable 9 requires a reserved idle stroke section, which is used to enable the front fork telescopic tube 7-5 to tighten the cable 9 only in the rear part of the stroke when it retracts backward, thereby linking the retraction and extension device of the universal wheel 5.

[0063] The driving cooperation structure of the reserved empty travel section between the front fork telescopic tube 7-5 and the pull wire 9 is specifically as follows: the front fork telescopic tube 7-5 is provided with a driving block 9-2, and the driving block 9-2 is provided with a threading hole. The diameter of the threading hole is larger than the diameter of the pull wire 9. The pull wire 9 passes through the threading hole. The reserved empty travel section of the pull wire 9 is located in front of the driving block 9-2. The front end of the pull wire 9 passing through the threading hole is provided with a shift block 9-3. After the driving block 9-2 contacts the shift block 9-3, it drives the pull wire 9 by shifting the shift block 9-3.

[0064] The pull wire 9 is guided by a pull wire sleeve 9-1 sleeved on the outside thereof, wherein one end of the pull wire sleeve 9-1 is fixed to the pull wire outlet 14 of the universal wheel fixing seat 10-5, and the other end of the pull wire sleeve 9-1 is fixed to the travel guide tube 7-4 through the pull wire sleeve fixing plate 9-4 and the pull wire sleeve fixing nut 9-5.

[0065] The upper portion of the front fork 2 has two foldable handlebars 11. The left and right handlebars 11 are rotatably and foldably connected to the front fork 2 via a rotating joint. The rotating axis of the rotating joint is a handlebar pin 12. A locking sleeve 13 is mounted on the handlebar 11. The left and right locking sleeves 13 are movably mounted on the rotating joint of the handlebar 11, locking the handlebar 11 so that the left and right handlebars 11 cannot rotate around the rotating joint. The handlebar 11 can be unlocked by moving away from the rotating joint. The head of the locking sleeve 13 has a magnet 15, and the fixed side of the rotating joint also has a magnet 15 or ferromagnetic material. The locking sleeve 13 is positioned magnetically.

[0066] The functions of the various structural components in this embodiment are described as follows:

[0067] Rear wheel 4: It is the driven wheel, which plays a role in stabilizing the main body when riding or pushing;

[0068] Universal wheel 5: With the function of turning at will, the vehicle can be easily and conveniently moved as desired when pushed by hand;

[0069] Riding front wheel 3: It is the power source during riding and is driven by the hub motor inside the riding front wheel 3;

[0070] Box 1: It is the main body, the final support of all parts, and also the carrier for users to ride;

[0071] Motor 7-1: a driving body that converts electrical energy into mechanical energy;

[0072] Motor 7-1 drives gearbox 7-6: the main transmission mechanism for converting electrical energy into mechanical energy;

[0073] Cycling fork 2: Steering mechanism when riding;

[0074] Front fork telescopic tube 7-5: a flat square tube that can be used as a footrest for the rider to rest their feet while riding;

[0075] Travel guide tube 7-4: constrains and guides the telescopic movement of the front fork telescopic tube 7-5 during state change;

[0076] Pull wire 9: power source for the extension and retraction of the universal wheel 5;

[0077] Pull wire sleeve 9-1: the moving track of the guide wire 9;

[0078] Universal wheel fixing seat 10-5: supports the universal wheel 5 and the universal wheel retracting and extending device, and plays a load-bearing role;

[0079] Locking sleeve 13: locks the left and right handlebars 11;

[0080] The return spring 10-3 of the retracting and extending device is the power source for the universal wheel 5 to bounce back. When riding, the pull line 9 is relaxed, and the universal wheel 5 is reset upward under the action of the spring, so that riding is smooth and interference-free.

[0081] The working process and principle of this embodiment are as follows:

[0082] 1. Changing from riding state to non-riding state:

[0083] Folding handlebar 11, as shown below Figure 18 、 19 and 20:

[0084] By overcoming the magnetic positioning and pushing the locking sleeves 13 outward, the locking sleeves 13 are separated from the rotating joints of the handlebars 11, and the left and right handlebars 11 are unlocked. The left and right handlebars 11 are then rotated inward 90 degrees to complete the folding of the handlebars 11. Similarly, the reverse operation is the unfolding operation of the handlebars 11.

[0085] Start motor 7-1 to complete the transition to the non-riding state:

[0086] Motor 7-1 is started and rotates in the reverse direction. A gearbox 7-6 connected to motor 7-1 drives screw 7-2, which is fixed to gearbox 7-6, to rotate. Screw 7-2, via nut 7-3 at the rear end of the front fork expansion tube 7-5, drives the expansion tube 7-5 to retract. Because the front fork 2 and the front wheel 3 are connected, when the expansion tube 7-5 retracts, the front fork 2 and the front wheel 3 retract together.

[0087] The state of the front wheel 3 after retraction is as follows Figure 1 and 3As shown, because the travel guide tube 7-4 and the front fork telescopic tube 7-5 maintain an angle of about 16 degrees with the ground when installed, the front wheel 3 is lifted about 50 mm from the ground at this time.

[0088] In the front part of the stroke when the front fork telescopic tube 7-5 retracts backward to lift the riding front wheel 3 off the ground, the pull wire 9 is not under force until the front fork telescopic tube 7-5 retracts backward to lift the riding front wheel 3 off the ground in the rear part of the stroke when the pull wire 9 starts to tighten, transmitting power to the retracting and extending device of the universal wheel 5. When the tightened pull wire 9 is pulled down through the pull wire outlet 14, the return spring 10-3 is compressed, and at the same time drives the top plate 10-4, the guide rod 10-2 and the universal wheel 5 to descend together until the universal wheel 5 and the ground are kept on the same horizontal plane.

[0089] 2. Change from non-riding state to riding state:

[0090] Unfolding the handlebar 11:

[0091] The left and right handlebars 11 are rotated outwards 90 degrees to complete the unfolding of the handlebars 11. The left and right locking sleeves 13 are moved inwards. The locking sleeves 13 are positioned magnetically. At this time, the locking sleeves 13 are located at the rotation joints of the handlebars 11, locking the left and right handlebars 11.

[0092] Start the motor 7-1 to complete the change of riding state:

[0093] The motor 7-1 is started and rotated forward. The motor 7-1 drives the front fork telescopic tube 7-5 to extend through the screw drive mechanism, and the riding front fork 2 and the riding front wheel 3 are lowered to the ground while being extended.

[0094] In the front part of the stroke when the front fork telescopic tube 7-5 extends forward to lower the riding front wheel 3 to the ground, the front fork telescopic tube 7-5 gradually relaxes the cable 9, and the return spring 10-3 drives the universal wheel 5 to gradually descend until the universal wheel 5 descends to the ground and the cable 9 is completely relaxed.

[0095] After the front fork telescopic tube 7-5 is fully extended, the riding front wheel 3 contacts the ground, completing the transformation from the non-riding state to the riding state.

[0096] This embodiment 1 is a preferred embodiment of the present invention. Under the inventive concept of the present invention, there may be other feasible implementation schemes, which also fall within the protection scope of the present invention, such as the following embodiments.

[0097] Example 2 differs from Example 1 in that the drive coupling structure for the reserved idle travel section between the front fork telescopic tube 7-5 and the cable 9 is specifically configured such that the cable 9 and the front fork telescopic tube 7-5 are directly and fixedly coupled for drive. During the front portion of the rearward retraction of the front fork telescopic tube 7-5, the cable 9 is relaxed. The front fork telescopic tube 7-5 only tightens the cable 9 during the rearward retraction to activate the retraction and extension mechanism of the universal wheel 5. Compared to Example 1, this design presents the risk of slack cable 9 randomly gathering in the travel guide tube 7-4, posing a risk of cable entanglement.

[0098] Compared with Example 1, Example 3 is different in that the linear telescopic mechanism on the box body 1 includes a telescopic sleeve and an electric push rod, and the telescopic sleeve is telescoped under the drive of the electric push rod.

[0099] Example 4 is different from Example 1 in that the power of the retractable device of the universal wheel 5 is electricity, for example, the retractable device is an electric push rod, and the retractable device of the universal wheel 5 is linked with the linear telescopic mechanism of the riding front fork 2 through a circuit.

[0100] Compared with Example 1, Example 5 is different in that the reset spring 10-3 is sleeved on the guide rod 10-2 to drive the guide rod 10-2 to reset and retract the universal wheel 5.

[0101] Example 6, compared with Example 1, differs in that the drive coordination structure of the reserved empty travel section between the front fork telescopic tube 7-5 and the cable 9 is specifically as follows: the front fork telescopic tube 7-5 has only a drive block 9-2, and the cable 9 has a shift block 9-3. The shift block 9-3 is slidably mounted in the travel guide tube 7-4 via a guide rail structure. The front fork telescopic tube 7-5 has a drive block 9-2, and the drive block 9-2 drives the cable 9 by shifting the shift block 9-3. The preset slight friction between the shift block 9-3 and the guide rail structure in the travel guide tube 7-4 constrains the end of the cable 9 to prevent abnormal noise.

Claims

1. A tiltable and liftable rideable suitcase, comprising a suitcase body, rollers at the bottom of the suitcase body for supporting the case body, a riding front fork, and a riding front wheel below the riding front fork. The riding front fork is retractable relative to the suitcase body in the riding direction via a linear telescopic mechanism mounted on the suitcase body, and is characterized by: The linear telescopic mechanism is arranged obliquely downward in the riding direction, so that the front fork can be retracted backward while lifting the front wheel off the ground; The linear telescopic mechanism is an electric linear telescopic mechanism; The electric linear telescopic mechanism includes a motor, a screw drive mechanism composed of a screw rod and a nut, and a telescopic sleeve. The telescopic sleeve is installed on the box body. The motor drives the telescopic sleeve to extend and retract through the screw drive mechanism, and the extended end of the telescopic sleeve drives the front fork to extend and retract. The telescopic sleeve is a two-section telescopic sleeve, comprising a travel guide tube and a front fork telescopic tube. The front fork telescopic tube is inserted into the travel guide tube for telescoping, and the travel guide tube is fixed obliquely in the box body. The rollers at the bottom of the box include one or more universal wheels, which are used to facilitate the box to turn in the direction of the user's pushing when the front fork is retracted. The universal wheels are retracted and extended by a retracting device; The retractable device of the universal wheel is linked to the riding front fork or the linear telescopic mechanism of the riding front fork through a linkage device, and is used to retract the universal wheel through the retractable device when the riding front fork is extended, and to extend the universal wheel through the retractable device when the riding front fork is retracted.

2. The tiltable and rideable suitcase according to claim 1, characterized in that: The rollers at the bottom of the box include two directional riding rear wheels and two universal wheels. The two riding rear wheels are arranged in the same row in the left and right directions, and the two universal wheels are arranged in the same row in the left and right directions. In the riding direction, the universal wheels are located between the riding rear wheels and the riding front wheels.

3. The tiltable and rideable suitcase according to claim 1, characterized in that: The riding front fork is provided with a wheel cover frame covering the rear side of the riding front wheel, and the telescopic end of the linear telescopic mechanism is connected to the bottom of the wheel cover frame for lowering the height of the connection point between the linear telescopic mechanism and the riding front fork.

4. The tiltable and rideable suitcase according to claim 1, characterized in that: The screw drive mechanism is located in the stroke guide tube and the front fork telescopic tube, the motor is arranged at the rear end of the stroke guide tube, the nut of the screw drive mechanism is located at the rear end of the front fork telescopic tube, one end of the screw in the stroke guide tube is connected to the motor drive, and the other end of the screw passes through the nut and enters the front fork telescopic tube, the front end of the front fork telescopic tube is connected to the riding front fork, and the motor drives the front fork telescopic tube to extend out of the box through the screw drive mechanism.

5. The tiltable and rideable suitcase according to claim 1, characterized in that: The screw drive mechanism is located in the travel guide tube and the front fork telescopic tube, the motor is arranged at the rear end of the travel guide tube, the nut of the screw drive mechanism is located at the rear end of the front fork telescopic tube, one end of the screw in the travel guide tube is connected to the motor drive, the other end of the screw passes through the nut and enters the front fork telescopic tube, the front end of the front fork telescopic tube is connected to the riding front fork, and the motor drives the front fork telescopic tube to extend out of the box through the screw drive mechanism; The linkage device is a pull wire, which penetrates from the front end of the travel guide tube into the gap between the travel guide tube and the front fork telescopic tube to drive and cooperate with the front fork telescopic tube.

6. The tiltable and rideable suitcase according to claim 5, characterized in that: The rollers at the bottom of the box include two directional riding rear wheels and two universal wheels. The two riding rear wheels are arranged in the same row in the left and right directions, and the two universal wheels are arranged in the same row in the left and right directions. In the riding direction, the universal wheels are located between the riding rear wheels and the riding front wheels. The inner cavity of the travel guide tube is divided into a middle guide cavity and wire pulling cavities on both sides. The front fork telescopic tube is inserted into the guide cavity. The wires of the retracting and extending devices of the universal wheels on the left and right sides enter the travel guide tube through the wire pulling cavities on each side and cooperate with the front fork telescopic tube drive.

7. The tiltable and rideable suitcase according to claim 5, characterized in that: The telescopic stroke of the universal wheel is smaller than that of the riding front fork. The driving cooperation between the front fork telescopic tube and the cable reserves an empty stroke section, which is used to make the front fork telescopic tube tighten the cable only in the rear stroke of the backward retraction, thereby linking the retracting and extending device of the universal wheel.

8. The tiltable and rideable suitcase according to claim 1, characterized in that: The retractable device of the universal wheel is a linear telescopic mechanism, and the linkage device is a pull wire. The retractable device lowers the universal wheel under the action of the pull wire and retracts the universal wheel under the action of a reset spring.

9. The tiltable and rideable suitcase according to claim 8, characterized in that: The retractable and extending device of the universal wheel specifically includes a retractable and extending guide tube, a guide rod and a reset spring. The guide rod is inserted into the retractable and extending guide tube for extension and retraction. The reset spring drives the guide rod to reset and retract the universal wheel. The pull wire is connected to the guide rod, driving the guide rod to overcome the elastic force of the reset spring to release the universal wheel.

10. The tiltable and rideable suitcase according to claim 9, characterized in that: The reset spring and guide rod are arranged side by side in the tube cavity of the retractable guide tube. There is also a top plate in the tube cavity of the retractable guide tube. The top plate is located above the reset spring and the guide rod. The guide rod is fixed to the top plate. The two ends of the reset spring act on the top plate and the bottom of the inner cavity of the retractable guide tube respectively. The pull wire passes through the reset spring from bottom to top and is connected to the top plate.

11. The tiltable and rideable suitcase according to claim 9, characterized in that: The bottom of the retractable guide tube is provided with a universal wheel fixing seat, the retractable device is fixed to the bottom of the box body through the universal wheel fixing seat, and the top of the retractable guide tube is closed by an end cover.

12. The tiltable and rideable suitcase according to claim 5, characterized in that: The pull wire is guided by a pull wire sleeve sleeved on the outside thereof, and the motor drives the screw rod to rotate after the speed is changed by a gear box, or the motor is a motor with an integrated gear box.

13. The tiltable and rideable suitcase according to claim 1, characterized in that: The included angle A between the linear telescopic mechanism and the horizontal plane is 11 degrees to 21 degrees.

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