Multifunctional luggage case

Abstract

The multifunctional luggage case comprises a primary case body and a secondary case body, two front universal wheels are installed on one side of the bottom of the primary case body in a bilateral symmetry mode, a supporting seat is installed on the other opposite side of the bottom of the primary case body, the supporting seat is connected with the primary case body in a horizontal moving mode, and two rear universal wheels are installed at the bottom of the supporting seat in a bilateral symmetry mode; the side, close to the rear universal wheels, of the child box body is hinged to the mother box body, the multifunctional luggage case has a riding state and a storage state, in the riding state, the child box body deflects downwards to be attached to the lower portion of the mother box body, the bottom of the child box body abuts against the top of the supporting seat, and the child box body is folded in the storage state. And the two rear universal wheels are limited through a limiting structure, so that the rear universal wheels are changed into directional wheels, and in the storage state, the child box body deflects upwards to be attached to the upper portion of the mother box body. The multifunctional luggage case provided by the utility model has a storage function and a riding function at the same time, and is convenient to use and safe to ride.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of luggage, especially to multi -functional luggage. BACKGROUND

[0002] The existing luggage structure often increases a "riding" position through the deformation of the box body, so that the luggage can have a storage function and also can be used for children to ride (sit), so as to rest and have better entertainment interest.

[0003] In the prior art, the utility model discloses a detachable riding type multifunctional luggage in the utility model discloses a detachable riding type multifunctional luggage, which comprises a mother box body, a roller, a pull rod, a handle, a child box body, a first zipper and a second zipper, wherein the mother box body is L-shaped and comprises an integrated pushing part and a riding part, wherein the first zipper is arranged on the middle part of the periphery of the mother box body, and the second zipper is arranged on the middle part of the periphery of the child box body, and the shapes of the mother box body and the child box body are matched and are connected by mutual buckling, so as to form an integrated luggage.

[0004] The riding type multifunctional luggage is not different from general luggage when used as luggage, but when it is changed into a riding state, the problem of rear gravity center deviation exists, and the child is prone to leaning backward when riding, which has a great safety problem. UTILITY MODEL CONTENTS

[0005] The embodiment of the application provides a multifunctional luggage which simultaneously has a storage function and a riding function, and since the supporting seat can move relative to the mother box body and two rear universal wheels are installed at the bottom of the supporting seat, when changed into a riding state, the two rear universal wheels are relatively far away from the two front universal wheels, so that the problem of rear gravity center deviation of the luggage in the riding state and easy leaning backward can be solved, and the use is safer.

[0006] The embodiment of the application provides a multifunctional luggage, which comprises a mother box body and a child box body, the child box body is hingedly arranged on the mother box body, two front universal wheels are arranged at the end of the bottom of the mother box body away from the child box body, the two front universal wheels are symmetrical about the horizontal middle axis of the bottom of the mother box body, a supporting seat is arranged at the end of the bottom of the mother box body close to the child box body, the supporting seat moves relative to the mother box body, and two rear universal wheels are arranged at the bottom of the supporting seat, and the two rear universal wheels are symmetrical about the horizontal middle axis of the bottom of the mother box body.

[0007] The multifunctional luggage has a riding state and a storage state, in the riding state, the child box body is turned down and abuts against the lower part of the mother box body, and the bottom of the child box body abuts against the supporting seat, and in the storage state, the child box body is turned up and abuts against the upper part of the mother box body.

[0008] In a possible implementation, the support base is provided with a control button, and the support base is provided with two guide rods at one end close to the female box body, the two guide rods are symmetric about the horizontal middle axis of the bottom of the female box body, and are respectively connected to two ends of the control button perpendicularly, the female box body is provided with a guide sleeve in sliding fit with the guide rods, and the guide rods are connected with a locking structure configured to unlock the guide rods and the guide sleeve when the control button is pressed, so that the support base can be moved directionally relative to the female box body, and lock the guide rods and the guide sleeve when the control button is released.

[0009] In a possible implementation, the locking structure comprises a reset spring, two locking rods, and a cavity for placing the control button and the reset spring, the control button is provided with a pressing protrusion at one end away from the female box body, the pressing protrusion penetrates the outer sidewall of the cavity, the reset spring is connected between the control button and the inner sidewall of the cavity, the two locking rods are coaxially embedded in the two guide rods respectively and are in clearance fit with the guide rods, the outer ends of the two locking rods are respectively connected to the two ends of the control button perpendicularly, and the inner ends of the locking rods are provided with two limiting grooves symmetrically in the radial direction, the limiting grooves are connected with locking blocks in hinged fit, and the guide rods are provided with avoidance holes matched with the locking blocks.

[0010] When the control button is pressed, the locking rods move inward, drive the locking blocks to rotate away from the guide sleeve through the limiting grooves, and unlock the guide rods and the guide sleeve; when the control button is released, the locking rods move outward, drive the locking blocks to rotate through the avoidance holes and abut against the inner sidewall of the guide sleeve, and lock the guide rods and the guide sleeve.

[0011] In a possible implementation, the locking block is a wedge-shaped block, comprising a rotating middle part, and a hinged part and a locking part extending out of the rotating middle part at a predetermined included angle, the rotating middle part is connected to the guide rod perpendicularly through a rotating shaft, the hinged part is hingedly arranged in the limiting groove, and the locking part is close to the sidewall of the guide rod and the guide sleeve, and the avoidance hole extends along the axial direction of the guide rod.

[0012] In a possible implementation, the upper part of the female box body is provided with a notch suitable for storing the sub-box body, and the outer contour of the sub-box body is matched with the contour of the notch.

[0013] In a possible implementation, the side wall of the support seat is symmetrically provided with a guide rod near one side of the mother box body, the surface of the guide rod is provided with a plurality of limiting protrusions arranged in an axial direction, the mother box body is provided with a guide hole in sliding fit with the guide rod, and the guide hole is provided with a limiting groove or a limiting hole in fit with the limiting protrusions.

[0014] In a possible implementation, the top of the support seat is vertically connected with a directional moving block through a first reset spring, the directional moving block faces the child box body when the child box body abuts against the support seat in a riding state, the directional moving block is isosceles trapezoidal, and the large end of the directional moving block is located at the top, and the two inclined sides of the directional moving block respectively face the two rear universal wheels.

[0015] The support seat is symmetrically connected with a limiting rod at the two sides of the directional moving block, one end of the limiting rod near the directional moving block is coaxially connected with an end head, a second reset spring is sleeved on the limiting rod, a guide channel in gap fit with the limiting rod is arranged in the support seat in a horizontal direction, and a limiting channel is coaxially arranged at the inner side end of the guide channel, the inner diameter of the limiting channel is greater than that of the guide channel, the limiting channel is in gap fit with the end head, and the second reset spring is located in the limiting channel and connected with the end head and the bottom wall of the limiting channel at two ends respectively.

[0016] The support seat is connected with the rear universal wheels through a wheel rod, and the inner side surface of the wheel rod is provided with a limiting space in fit with the limiting rod.

[0017] In a possible implementation, the directional moving block is provided with a guide groove in fit with the end head on the inclined side.

[0018] In a possible implementation, the top end of the end head is a spherical structure.

[0019] In a possible implementation, one end of the limiting rod near the rear universal wheel is connected with an arc-shaped limiting plate, and the limiting space is an arc-shaped groove in embracing fit with the arc-shaped limiting plate.

[0020] Beneficial effects: compared with the prior art, the multifunctional luggage case provided by the application can effectively solve the problem that the luggage case is prone to backward tilting in a riding state due to the rearward gravity center by arranging the rear universal wheels on the support seat, and the support seat can move relative to the mother box body, and the support seat drives the rear universal wheels away from the front universal wheels in a riding state.

[0021] The rear universal wheel can be changed into a directional wheel by fixing the wheel rod through cooperation of the directional moving block and the limiting rod in the riding state, the directivity is strong, the moving direction of the luggage case is convenient to control, the riding is safer, the use is more convenient, meanwhile, the additional riding sitting area is provided through the sub-case body, the riding is more comfortable.

[0022] These and other objects, features and advantages of the present application will become apparent with reference to the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structure schematic diagram of the multifunctional luggage case in the riding state is shown.

[0024] Figure 2 The process schematic diagram of the multifunctional luggage case changing from the storage state into the riding state is shown.

[0025] Figure 3 The local structure schematic diagram of the multifunctional luggage case in the riding state is shown.

[0026] Figure 4 The local sectional structure schematic diagram of the limiting rod in different states in the present application is shown, wherein figure a is the storage state, and figure b is the riding state.

[0027] Figure 5 The local structure schematic diagram of the limiting rod in the present application is shown.

[0028] Figure 6 The enlarged structure schematic diagram of part A in the present application is shown. Figure 1

[0029] Figure 7 The structure schematic diagram of the supporting seat in the present application is shown.

[0030] Figure 8 The exploded structure schematic diagram of the supporting seat in the present application is shown.

[0031] Figure 9 The structure schematic diagram of the locking rod in the storage state in the present application is shown.

[0032] Figure 10 The sectional structure schematic diagram of the locking rod cooperating with the guide rod and the guide sleeve in the riding state in the present application is shown.

[0033] ​10 - mother box body, 101 - avoidance gap, 11 - front universal wheel, 12 - rear universal wheel, 13 - first hinge piece, 14 - first connecting piece, 15 - second connecting piece, 16 - guide sleeve, 20 - sub-box body, 21 - second hinge piece, 22 - third connecting piece, 23 - fourth connecting piece, 30 - support seat, 301 - guide channel, 302 - limiting channel, 303 - limiting space, 304 - cavity, 305 - avoidance hole, 31 - guide rod, 32 - wheel rod, 311 - control button, 312 - guide rod, 313 - pressing protrusion, 41 - directional moving block, 411 - inclined side surface, 42 - limiting rod, 43 - first reset spring, 44 - end head, 45 - second reset spring, 46 - arc-shaped limiting plate, 401 - guide groove, 51 - reset spring, 52 - locking rod, 53 - locking block, 531 - hinged part, 532 - rotating middle part, 533 - locking part, 501 - limiting groove. DETAILED DESCRIPTION

[0034] The following description is provided to enable any person skilled in the art to practice the present application. The preferred embodiments described herein are only examples of the present application and alternative embodiments can be devised by those skilled in the art without departing from the spirit and scope of the present application. The present application is defined by the claims and their equivalents.

[0035] Those skilled in the art will understand that, in the disclosure of the specification, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the above terms cannot be understood as a limitation of the present application.

[0036] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0037] Reference Figures 1 to 6The multifunctional luggage case provided by the application has two states, namely a riding state and a storage state. In the riding state, the child can ride on the luggage case. Based on the hinged relationship, the sub-luggage case 20 is flipped to the obliquely downward direction and then is attached to the lower part of the mother-luggage case 10. Meanwhile, the support seat 30 is relatively far away from the mother-luggage case 10, and the sub-luggage case 20 is attached to the top of the support seat 30. This can provide a larger riding area and improve the riding comfort. Meanwhile, based on the support of the support seat 30, the riding is more stable. Since the support seat 30 drives the rear universal wheels 12 to be far away from the front universal wheels 11 in the riding state, the problem that the luggage case is prone to backward tilting due to the rear gravity center in the riding state can be solved or greatly alleviated. In the storage state, based on the hinged relationship, the sub-luggage case 20 is flipped to the obliquely upward direction and then is attached to the upper part of the mother-luggage case 10. Meanwhile, the support seat 30 is relatively close to the mother-luggage case 10, and the occupied space is reduced. This does not affect the normal storage function of the sub-luggage case and is very convenient to use.

[0038] The multifunctional luggage case has a riding state and a storage state. In the riding state, the sub-luggage case 20 is flipped downward and is attached to the lower part of the mother-luggage case 10. The bottom of the sub-luggage case 20 is attached to the top of the support seat 30, and the two rear universal wheels 12 are limited by the limiting structure and are changed to directional wheels. In the storage state, the sub-luggage case 20 is flipped upward and is attached to the upper part of the mother-luggage case 10.

[0039] The multifunctional luggage case provided by the application has two states, respectively a riding state and a storage state. In the riding state, the child can ride on the luggage case. Based on the hinged relationship, the sub-luggage case 20 is flipped to the obliquely downward direction and then is attached to the lower part of the mother-luggage case 10. Meanwhile, the support seat 30 is relatively far away from the mother-luggage case 10, and the sub-luggage case 20 is attached to the top of the support seat 30. This can provide a larger riding area and improve the riding comfort. Meanwhile, based on the support of the support seat 30, the riding is more stable. Since the support seat 30 drives the rear universal wheels 12 to be far away from the front universal wheels 11 in the riding state, the problem that the luggage case is prone to backward tilting due to the rear gravity center in the riding state can be solved or greatly alleviated. In the storage state, based on the hinged relationship, the sub-luggage case 20 is flipped to the obliquely upward direction and then is attached to the upper part of the mother-luggage case 10. Meanwhile, the support seat 30 is relatively close to the mother-luggage case 10, and the occupied space is reduced. This does not affect the normal storage function of the sub-luggage case and is very convenient to use. In one embodiment, in combination Figures 7 to 10The support base 30 is provided with a control button 311, and two guide rods 312 are provided on one end of the support base 30 close to the mother box body 10. The two guide rods 312 are symmetrical about the horizontal central axis of the bottom of the mother box body 10 and are respectively connected to the two ends of the control button 311 perpendicularly. Correspondingly, the mother box body 10 is provided with a guide sleeve 16 that is in sliding fit with the guide rods 312. The guide rods 312 are connected with a locking structure, which is configured to unlock the guide rods 312 and the guide sleeve 16 when the control button 311 is pressed, so that the support base 30 can move directionally relative to the mother box body 10; and the locking structure is configured to lock the guide rods 312 and the guide sleeve 16 when the control button 311 is released. In this way, the control button 311 can be used to control the support base 30 to move close to or away from the mother box body 10, which is simple in structure and convenient to operate.

[0040] Further preferably, the locking structure comprises a reset spring 51, two locking rods 52, and a cavity 304 for placing the control button 311 and the reset spring 51. The control button 311 is provided with a pressing protrusion 313 at the end away from the mother box body 10, and the pressing protrusion 313 penetrates the outer side wall of the cavity 304. The reset spring 51 is connected between the control button 311 and the inner side wall of the cavity 304. The two locking rods 52 are coaxially embedded in the two guide rods 312 and are in clearance fit with the guide rods 312. The outer ends of the two locking rods 52 are respectively connected to the two ends of the control button 311 perpendicularly. The inner ends of the locking rods 52 are provided with two limiting grooves 501 radially and symmetrically. The limiting grooves 501 are connected with locking blocks 53 in a hinged fit manner. The guide rods 312 are provided with avoidance holes 305 that are matched with the locking blocks 53.

[0041] When the control button 311 is pressed, the locking rods 52 move inwardly and drive the locking blocks 53 to rotate away from the guide sleeve 16 through the limiting grooves 501, thereby unlocking the guide rods 312 and the guide sleeve 16. When the control button 311 is released, the locking rods 52 move outwardly and drive the locking blocks 53 to rotate through the avoidance holes 305 and abut against the inner side wall of the guide sleeve 16, thereby locking the guide rods 312 and the guide sleeve 16 in a frictional resistance manner. In this way, the support base 30 can be fixed on the mother box body 10, and the locking stability is good. Meanwhile, the control button 311 can be used to switch between the unlocked and locked states flexibly.

[0042] Further preferably, the locking block 53 is a wedge-shaped block, comprising a rotating middle part 532 and a hinge part 531 and a locking part 533 extending from the rotating middle part 532 at a predetermined included angle, wherein the rotating middle part 532 is connected to the guide rod 312 perpendicularly through a rotating shaft, wherein the hinge part 531 is hingedly arranged in the limiting groove 501, and wherein the locking part 533 is close to the side wall of the guide rod 312 and the guide sleeve 16, while the avoiding hole 305 extends along the axial direction of the guide rod 312, so that the rotating middle part 532 can be taken as the rotating base point during the locking or unlocking of the locking block 53, and the hinge part 531 and the locking part 533 can be oriented and rotated around the rotating middle part 532.

[0043] In one embodiment, the upper part of the mother box body 10 is provided with a notch 101 suitable for storing the child box body 20, and the outer contour of the child box body 20 is matched with the contour of the notch, forming a complete luggage box. In this way, when the luggage box is changed to the riding state, a larger accommodation space can be formed through the notch, providing a larger riding seating range, and the riding is more convenient. At the same time, the larger riding seating space can also alleviate the problem of the luggage box's gravity center being offset.

[0044] When the luggage box is in the riding state, the child box body 20 and the notch 101 define a riding seat, wherein the seat depth of the riding seat is 240-280 mm, the seat width of the riding seat is 220-250 mm, and the height from the bottom wall of the riding seat to the bottom of the mother box body 10 is 270-350 mm. This size design can be more suitable for the riding of children aged 3-7 years old, and the riding is more comfortable.

[0045] In addition, two footrest positions are arranged on the lower part of the mother box body 10, and the two footrest positions are symmetrically arranged on the first side surface, so as to provide support for the soles of the child's feet when the child is riding, and the riding is more convenient.

[0046] The footrest position can be composed of a flat bottom wall of a groove structure, or can be composed of a folding footboard arranged on the lower part of the mother box body 10. The folding footboard has a folded state of being fitted to the mother box body 10 and an unfolded state of being horizontal and perpendicular to the mother box body 10. When the folding footboard is in the unfolded state, the folding footboard constitutes the footrest position. When the folding footboard is in the folded state, the outer surface of the folding footboard does not protrude from the mother box body 10. This design form can make the soles of the child's feet more conveniently placed on the folding footboard.

[0047] The width of the footrest position is 40-50 mm, so that the support of the soles is more comfortable and the supporting force is strong.

[0048] In one embodiment, the outer end of the bottom wall of the avoiding gap 101 is provided with a first hinge piece 13, while the sub-box 20 is provided with a second hinge piece 21 foldably connected with the first hinge piece 13. Such a hinge type connection structure not only has good connection strength, but also has good folding strength, and can ensure the stability of the luggage in both states.

[0049] In one embodiment, the inner wall of the avoiding gap 101 is provided with a first connecting piece 14, while the lower part of the female box body 10 is provided with a second connecting piece 15 directly below the avoiding gap 101, and the sub-box 20 is correspondingly provided with a third connecting piece 22 and a fourth connecting piece 23. In the riding state, the second connecting piece 15 and the fourth connecting piece 23 cooperate, so as to ensure the stability and safety of the luggage in the riding state. In the storage state, the first connecting piece 14 and the third connecting piece 22 cooperate, so as to ensure the stability of the luggage in the storage state, without affecting the flight, high-speed rail and train, etc.

[0050] The first connecting piece 14 and the third connecting piece 22 are both magnetic members, such as magnetically attracted male and female buckles, which have high connection strength and can ensure the stability of the luggage in the storage state.

[0051] The second connecting piece 15 and the fourth connecting piece 23 are both magnetic members, such as magnetically attracted male and female buckles, which have high connection strength and can ensure the stability of the luggage in the riding state.

[0052] In one embodiment, for the movement mode of the support seat 30 relative to the female box body 10, the application provides a more simple structure. The side wall of the support seat 30 is symmetrically provided with a guide rod 31 near one side of the female box body, and the surface of the guide rod 31 is provided with a plurality of limiting protrusions spaced apart in the axial direction. Correspondingly, the female box body 10 is provided with a guide hole slidingly matched with the guide rod 31, and the guide hole is provided with a limiting groove or a limiting hole matched with the limiting protrusion. Thus, the sliding cooperation of the guide rod 31 and the guide hole can ensure the stability of the horizontal movement of the support seat 30, and in addition, the cooperation of the limiting protrusion and the limiting groove or the limiting hole can stably keep the guide rod 31 at a specific extension length, such as the length of supporting the sub-box or the length of retracting to the female box body, which is more convenient to use.

[0053] In one embodiment, the top of the support base 30 is vertically connected with a directional moving block 41 by a first reset spring 43, and the directional moving block 41 is opposite to the sub-box 20 when the sub-box 20 abuts against the support base 30 in the riding state; the directional moving block 41 is isosceles trapezoidal, and the large end of the directional moving block 41 is located at the top, and two inclined sides 411 of the directional moving block 41 are opposite to two rear universal wheels 12 respectively;

[0054] The support base 30 is symmetrically connected with a limiting rod 42 at both sides of the directional moving block 41, and the end of the limiting rod 42 close to the directional moving block 41 is coaxially connected with an end head 44. The limiting rod 42 is sleeved with a second reset spring 45, and correspondingly, the support base 30 is provided with a guide channel 301 matched with the limiting rod 42 in the horizontal direction, and a limiting channel 302 is coaxially arranged at the inner side end of the guide channel 301, wherein the inner diameter of the limiting channel 302 is greater than the inner diameter of the guide channel 301, and the limiting channel 302 is matched with the end head 44 in the gap, and the second reset spring 45 is located in the limiting channel 302 and connected with the end head 44 and the bottom wall of the limiting channel 302 at both ends respectively;

[0055] The support base 30 is connected with the rear universal wheels 12 through a wheel rod 32, and the inner side surface of the wheel rod 32 is provided with a limiting space 303 matched with the limiting rod 42.

[0056] When the sub-box 20 is turned down to abut against the support base 30, the directional moving block 41 at the top is subjected to downward pressure, and the directional moving block 41 moves downward, and in the moving process, the two inclined sides 411 of the directional moving block 41 push the limiting rods 42 and the end heads 44 on both sides to move outward synchronously until the limiting rods 42 are inserted into the limiting space 303, which locks the wheel rods 32 on both sides in the axial direction of the limiting rod 42, so that the two rear universal wheels 12 can only rotate in the radial direction of the limiting rod 42, and the rear universal wheels 12 are converted into directional wheels. Therefore, when the luggage changes from the storage state to the riding state, the rear universal wheels 12 are automatically converted into directional wheels in the moving process of the sub-box 20 by the limiting structure, which can make the luggage have strong directionality, facilitate the control of the movement of the luggage, and further improve the safety of riding.

[0057] When the luggage case is converted from the riding state to the storage state, the force applied to the directional moving block 41 disappears, the directional moving block 41 is upwardly moved in the orientation under the rebounding action of the first reset spring 43, and the two side limiting rods 42 are moved away from the rear universal wheel 12 under the rebounding action of the second reset spring 45, thereby realizing the unlocking of the two directional wheels and making them become universal wheels, which are flexible in moving and convenient in use when the luggage case is stored.

[0058] In an embodiment, the directional moving block 41 is provided with a guide groove 401 cooperating with the end head 44 on the inclined side surface 411, wherein the guide groove 401 extends along the height direction of the inclined surface, and the top end of the end head 44 is in a spherical structure, so as to provide the limiting rod 42 with a guide action through the guide groove 401, to achieve the purpose of radial limiting, avoid the movement of the limiting rod 42 in the direction other than the axial direction, and also provide the directional moving block 41 with limiting action, to avoid the moving distance from being too large to be out of the supporting seat 30 when upwardly moving. In addition, the spherical structure of the top end of the end head 44 can effectively reduce the frictional resistance between the end head 44 and the directional moving block 41, so that the directional moving block 41 can be more quickly upwardly or downwardly moved, with high sensitivity.

[0059] In an embodiment, the limiting rod 42 is connected with an arc-shaped limiting plate 46 at one end close to the rear universal wheel 12, and the limiting space 303 is an arc-shaped groove in a clamping type cooperation with the arc-shaped limiting plate 46, so as to greatly improve the limiting action of the limiting rod 42 on the wheel rod 32 in the effective space range through the clamping type cooperation structure, thereby ensuring the stability of the directional moving of the directional wheel in the riding state.

[0060] It should be noted that the terms "first", "second", "third", and "fourth" are only used for descriptive purposes and do not indicate any order or relative importance, and can be interpreted as names.

[0061] Those skilled in the art should understand that the above description and the embodiments of the utility model shown in the drawings are only examples and do not limit the utility model. The advantages of the utility model have been fully and effectively realized. The functions and structural principles of the utility model have been shown and described in the embodiments, and the embodiments of the utility model can be any deformation or modification without departing from the principles.

Claims

1. A multi-functional luggage case characterized by, The multifunctional luggage case comprises a mother box body and a daughter box body, the daughter box body is hingedly arranged on the mother box body, two front universal wheels are arranged on the bottom of the mother box body away from the daughter box body, the two front universal wheels are symmetrically arranged with respect to the horizontal middle axis of the bottom of the mother box body, a support seat is arranged on the bottom of the mother box body and close to the daughter box body, the support seat is movable relative to the mother box body, two rear universal wheels are arranged on the bottom of the support seat, the two rear universal wheels are symmetrically arranged with respect to the horizontal middle axis of the bottom of the mother box body. The multifunctional luggage case has a riding state and a storage state, in the riding state, the daughter box body is turned down and abuts against the lower part of the mother box body, and the bottom of the daughter box body abuts against the support seat, in the storage state, the daughter box body is turned up and abuts against the upper part of the mother box body.

2. The multi-functional luggage case of claim 1, wherein, The support seat is provided with a control button, the support seat is provided with two guide rods at the end close to the mother box body, the two guide rods are symmetrically arranged with respect to the horizontal middle axis of the bottom of the mother box body, and are respectively perpendicularly connected to the two ends of the control button, the mother box body is provided with a guide sleeve in sliding fit with the guide rods, the guide rods are connected with a locking structure, the locking structure is configured to unlock the guide rods and the guide sleeve when the control button is pressed, so that the support seat can be directionally moved relative to the mother box body, and the locking structure is configured to lock the guide rods and the guide sleeve when the control button is released.

3. The multi-functional luggage case of claim 2, wherein, The locking structure comprises a reset spring, two locking rods and a cavity for accommodating the control button and the reset spring, the end of the control button away from the mother box body is provided with a pressing protrusion, the pressing protrusion penetrates the outer side wall of the cavity, the reset spring is connected between the control button and the inner side wall of the cavity, the two locking rods are coaxially embedded in the two guide rods respectively, and are in clearance fit with the guide rods, the outer ends of the two locking rods are respectively perpendicularly connected to the two ends of the control button, the inner ends of the locking rods are radially symmetrically provided with two limiting grooves, the limiting grooves are connected with locking blocks in hinged fit, and the guide rods are provided with avoidance holes matched with the locking blocks. When the control button is pressed, the locking rods move inward, and drive the locking blocks to rotate away from the guide sleeve through the limiting grooves, thereby unlocking the guide rods and the guide sleeve, when the control button is released, the locking rods move outward, and drive the locking blocks to rotate through the limiting grooves and abut against the inner side wall of the guide sleeve through the avoidance holes, thereby locking the guide rods and the guide sleeve.

4. The multi-functional luggage case of claim 3, wherein, The locking block is a wedge-shaped block, comprising a rotating middle part, a hinged part and a locking part extending from the rotating middle part at a predetermined included angle, the rotating middle part is perpendicularly connected to the guide rod through a rotating shaft, the hinged part is hingedly arranged in the limiting groove, and the locking part is close to the side wall of the guide rod and the guide sleeve, the avoidance hole extends along the axial direction of the guide rod.

5. The multi-functional luggage case of claim 1, wherein, The upper part of the mother box body is provided with a gap suitable for storing the daughter box body, and the outer contour of the daughter box body is matched with the contour of the gap.

6. The multi-functional luggage case of claim 1, wherein, The side wall of the support seat is symmetrically provided with a guide rod near one side of the female box body, the surface of the guide rod is provided with a plurality of limiting protrusions arranged at intervals along the axial direction, the female box body is provided with a guide hole in sliding fit with the guide rod, and the guide hole is provided with a limiting groove or a limiting hole in fit with the limiting protrusions.

7. The multi-functional luggage case of claim 1, wherein, The top of the support seat is vertically connected with a directional moving block through a first reset spring, the directional moving block faces the sub-box body when the sub-box body abuts against the support seat in the riding state, the directional moving block is isosceles trapezoidal, and the large end of the directional moving block is located at the top, and the two inclined side surfaces of the directional moving block respectively face two rear universal wheels. The support seat is symmetrically connected with a limiting rod at the two sides of the directional moving block, one end of the limiting rod near the directional moving block is coaxially connected with an end head, a second reset spring is sleeved on the limiting rod, the support seat is provided with a guide channel in gap fit with the limiting rod along the horizontal direction, and a limiting channel is coaxially arranged at the inner side end of the guide channel, the inner diameter of the limiting channel is greater than that of the guide channel, the limiting channel is in gap fit with the end head, the second reset spring is located in the limiting channel and is connected with the end head and the bottom wall of the limiting channel at two ends respectively, The support seat is connected with the rear universal wheels through a wheel rod, and the inner side surface of the wheel rod is provided with a limiting space in fit with the limiting rod.

8. The multi-functional luggage case of claim 7, wherein, The directional moving block is provided with a guide groove in fit with the end head on the inclined side surface, and the guide groove extends along the height direction.

9. The multi-functional luggage case of claim 8, wherein, The top end of the end head is a spherical structure.

10. The multi-functional luggage case of claim 7, wherein, One end of the limiting rod near the rear universal wheel is connected with an arc-shaped limiting plate, and the limiting space is an arc-shaped groove in embracing fit with the arc-shaped limiting plate.

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