Expandable luggage trolley

Abstract

The utility model discloses an expandable luggage car, which comprises a box body, a lifting mechanism, a lifting mechanism, a lifting mechanism, a lifting mechanism, a lifting mechanism and a lifting mechanism, wherein the box body has a vertical state and an inclined state opposite to each other; the support is of a deformable structure and has an unfolded state and a folded state which are opposite to each other, the whole support is of a herringbone structure with the forked bottom in the unfolded state, and the forked bottom is folded in the folded state; at least two groups of rollers are arranged, the groups of rollers are located at different branches of the support when the support is in an unfolded state, and the box body can be kept in a vertical state through the roller of one branch and the roller of the other branch is suspended when the support is in a folded state; and the seat plate is arranged on the bracket and is used for sitting or placing articles. According to the luggage trolley, unnecessary logic constraints during state switching of the support and the luggage body are removed, and use is more convenient and flexible.

Description

Technical Field

[0001] The present application relates to the field of luggage carts, and in particular to an expandable luggage cart. Background Art

[0002] Luggage carts are common travel products that can carry items inside. Existing luggage carts generally include a box body, a bracket, rollers, and a seat. However, the bracket in the existing technology restricts the use of the luggage cart to a certain extent in different states and cannot meet the growing demand of consumers. Utility Model Content

[0003] The present application provides an expandable luggage cart, comprising:

[0004] The box body has a relatively upright state and an inclined state;

[0005] The bracket adopts a deformable structure and has relative expanded and folded states. In the expanded state, the bracket is in a herringbone shape with a forked bottom portion, and in the folded state, the forks are closed together.

[0006] The rollers include three groups, wherein the first and second groups are mounted on the bottom of the bracket and are located at different forks when the bracket is unfolded, and the third group is mounted on the bottom of the box;

[0007] A seat board, mounted on the bracket, for sitting or placing items;

[0008] The box body is supported only by the first group and the third group in an upright state, and the second group is suspended.

[0009] The present application provides an expandable luggage cart, comprising:

[0010] The box body has a relatively upright state and an inclined state;

[0011] The bracket adopts a deformable structure and has relative expanded and folded states. In the expanded state, the bracket is in a herringbone shape with a forked bottom portion, and in the folded state, the forks are closed together.

[0012] Rollers are mounted on the bottom of the bracket, and the rollers include at least two groups, wherein a first group is always located at the bottom of the box, and a second group is away from the box and located at a different fork from the box and the first group when the bracket is unfolded, and the second group is located outside the first group when the bracket is folded;

[0013] The seat is installed on the bracket and is used for sitting or placing things.

[0014] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution. They are merely further supplements or optimizations. Under the premise that there are no technical or logical contradictions, each optional method can be combined separately for the above-mentioned overall solution, or multiple optional methods can be combined.

[0015] Optionally, the bracket includes:

[0016] The main rod adopts a telescopic structure, the top of the main rod is provided with a first handrail, the bottom is provided with a first group of the rollers, and the box body is detachably installed against the main rod;

[0017] The diagonal support rod is rotatably matched with the main rod, and corresponds to the unfolded state and the folded state when rotated to different angles. The bottom of the diagonal support rod is installed with the second group of rollers.

[0018] Optionally, a bottom bracket is further provided at the bottom of the main rod, and the first group of rollers is installed at the bottom of the bottom bracket;

[0019] The box body has a back side that is in contact with the bracket, and the bottom of the back side is overlapped on the base.

[0020] Optionally, the bottom of the back side is partially recessed to accommodate the base.

[0021] Optionally, when the box body is in an upright state, the bottoms of the first group and the third group of rollers are coplanar and support the luggage cart.

[0022] Optionally, the rollers are grouped into two groups and are arranged on both sides of the bracket in the width direction.

[0023] Optionally, when the box is in an inclined state, the third group of rollers is suspended.

[0024] Optionally, when the box is in an inclined state and the bracket is in a folded state, only the first group of the rollers is supported on the ground;

[0025] When the box is in an inclined state and the bracket is in an unfolded state, the first group and the second group of rollers are supported on the ground.

[0026] The present application provides an expandable luggage cart, comprising:

[0027] The box body has a relatively upright state and an inclined state;

[0028] The bracket adopts a deformable structure and has relative expanded and folded states. In the expanded state, the bracket is in a herringbone shape with a forked bottom portion, and in the folded state, the forks are closed together.

[0029] Rollers, the rollers comprising at least two groups, each group being located at a different fork of the bracket when the bracket is in an unfolded state, and the box body being able to be maintained in an upright position by the rollers of one fork, while the rollers of the other fork are suspended when the bracket is in a folded state;

[0030] The seat is installed on the bracket and is used for sitting or placing things.

[0031] Optionally, the bracket includes:

[0032] The main rod adopts a telescopic structure, the top of the main rod is provided with a first handrail, the bottom is provided with a first group of the rollers, and the box body is detachably installed against the main rod;

[0033] The diagonal support rod is rotatably matched with the main rod, and corresponds to the unfolded state and the folded state when rotated to different angles, and the bottom of the diagonal support rod is installed with the second group of rollers;

[0034] The box body is maintained in an upright state by the first group.

[0035] Optionally, a bottom bracket is further provided at the bottom of the main rod, and the first group of rollers is installed at the bottom of the bottom bracket;

[0036] The bottom of the box body is stacked on the bottom support.

[0037] Optionally, there are 3 to 4 rollers in the first group.

[0038] Optionally, in the inclined state, some of the rollers in the first group are suspended.

[0039] Optionally, the base includes a bottom plate and a peripherally closed or semi-open enclosure at the edge, the bottom plate and the enclosure together form an installation area, and the bottom of the box is placed in the installation area.

[0040] Optionally, a second armrest located above the seat is also mounted on the main rod.

[0041] Optionally, the installation position of the seat plate is adjacent to the rotation axis of the diagonal support rod and the main rod.

[0042] Optionally, the seat rests against the top side of the box.

[0043] Optionally, the rotational cooperation portion between the diagonal support rod and the main rod is provided with a rotation locking structure for maintaining the rotation angle of the two.

[0044] Optionally, the main rod includes a multi-stage sliding nested rod body, and mutually cooperating telescopic locking structures are provided between each rod body. The first armrest is provided with an unlocking operating member linked to the telescopic locking structure.

[0045] Optionally, the unlocking operating member is further configured with a second lock.

[0046] Optionally, the diagonal support rod is in an inverted U shape as a whole, and the second group of rollers consists of two rollers, which are respectively installed at the two bottom ends of the inverted U shape.

[0047] Optionally, the inverted U-shape is provided with a reinforcing cross bar adjacent to the opening.

[0048] Optionally, the box body is detachably connected to the bracket, the box body has a back side that is in contact with the bracket, and a coupling groove is provided on the outer surface of the back side, and at least a portion of the bracket in the folded state is embedded in the coupling groove.

[0049] Optionally, a mutually cooperating anti-slip structure is provided between the box body and the bracket.

[0050] Optionally, the bracket does not protrude from the back side of the box in the folded state.

[0051] Optionally, the bracket includes a main rod and an oblique support rod that are rotatably matched, a first group of the rollers is installed at the bottom of the main rod, the box body is detachably installed against the main rod, and a second group of the rollers is installed at the bottom of the oblique support rod;

[0052] When the bracket is in the folded state, the second group of rollers is placed in the corresponding coupling grooves.

[0053] Optionally, a mutually cooperating positioning structure is provided between the bracket and the coupling groove for retaining the diagonal support rod in the coupling groove.

[0054] Optionally, the box body is a closed structure and includes a box bottom and a box cover that cooperate with each other, wherein the box bottom is detachably connected to the bracket, and the box cover is located on one side of the box bottom in the horizontal direction.

[0055] The luggage cart of the present application eliminates unnecessary logical constraints when switching between the states of the bracket and the box body, making it more convenient and flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figures 1 to 7 Three-dimensional images of different angles of an expandable luggage cart in an upright position according to an embodiment of the present application;

[0057] Figure 8 This is a structural diagram of an expandable luggage cart in an expanded state according to an embodiment of the present application;

[0058] Figures 9 to 15 Three-dimensional images of different angles of another embodiment of the expandable luggage cart provided by the present application in a standing state;

[0059] Figures 16 to 22Three-dimensional images of different angles of another embodiment of the expandable luggage cart provided by the present application;

[0060] Figure 23 Schematic diagram of the structure of the bracket.

[0061] The reference numerals in the figures are described as follows:

[0062] 10. Luggage cart;

[0063] 100, box body; 110, back side; 120, coupling groove; 130, box bottom; 140, box cover;

[0064] 200, bracket; 210, main pole; 211, first handrail; 212, bottom support; 213, enclosure; 214, installation area; 220, diagonal support; 221, reinforcing crossbar; 230, second handrail;

[0065] 300, roller; 310, first group; 320, second group; 330, third group;

[0066] 400. Sit on the board. DETAILED DESCRIPTION

[0067] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0068] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be an intermediate component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be an intermediate component.

[0069] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0070] refer to Figures 1 to 8 An embodiment of the present application provides an expandable luggage cart 10, comprising:

[0071] The box body 100 has a relatively upright state and an inclined state;

[0072] The bracket 200 has a deformable structure and has two relative states: an expanded state and a folded state. In the expanded state, the bracket 200 has a herringbone structure with a forked bottom portion, and in the folded state, the forked bottom portion is closed together.

[0073] The rollers 300 include three groups, wherein the first group 310 and the second group 320 are mounted on the bottom of the bracket 200 and are located at different forks when the bracket 200 is unfolded, and the third group 330 is mounted on the bottom of the box 100;

[0074] The seat 400 is mounted on the bracket 200 and is used for sitting or placing items;

[0075] In the upright state, the box body 100 is supported only by the first group 310 and the third group 330 , and the second group 320 is suspended.

[0076] When the box body 100 is in a standing position, it can generally stand stably on a horizontal surface (such as Figure 3 ), and the user generally needs to support and drag the tilted state. Of course, if the bracket 200 is in the unfolded state, it can also stably support the box 100 and maintain the tilted state (such as Figure 8 ).

[0077] When the bracket 200 is in the folded state, the bottom forks are close together and close to the box body 100, and the overall appearance of the box body 100 and the bracket 200 is similar to a suitcase (such as Figure 3 ); When a child is seated on the seat 400, the bracket 200 is generally switched to the unfolded state to maintain overall stability (such as Figure 8 ).

[0078] In this embodiment, three sets of rollers 300 are provided and installed at corresponding positions, so that the luggage cart 10 can be switched between states and used more flexibly and is suitable for different scenarios.

[0079] This application eliminates unnecessary logical constraints when switching between the states of the bracket 200 and the box 100, making it more convenient and flexible to use.

[0080] refer to Figures 1 to 8 Another embodiment of the present application provides an expandable luggage cart 10, comprising:

[0081] The box body 100 has a relatively upright state and an inclined state;

[0082] The bracket 200 has a deformable structure and has two relative states: an expanded state and a folded state. In the expanded state, the bracket 200 has a herringbone structure with a forked bottom portion, and in the folded state, the forked bottom portion is closed together.

[0083] The rollers 300 are mounted on the bottom of the bracket 200. The rollers 300 include at least two groups. A first group 310 is always located at the bottom of the box 100. A second group 320 is located away from the box 100 and at a different fork from the box 100 and the first group 310 when the bracket 200 is unfolded. When the bracket 200 is folded, the second group 320 is located outside the first group 310.

[0084] The seat 400 is mounted on the bracket 200 and is used for sitting or placing items.

[0085] The housing 100 and the bracket 200 are detachably connected. In this embodiment, the first group 310 is always located at the bottom of the housing 100, which is considered to be in an undetached state. The second group 320 is located outside the first group 310 to more easily resolve interference between the housing 100 and the second group 320, thereby minimizing the space occupied in the folded state while maintaining the housing volume.

[0086] For reference on the outside Figure 2 In the X direction, specifically in the outer side in the width direction, the second group 320 is suspended in the air and is located outside the first group 310 when the box body 100 is in the upright state, so as to avoid interference problems when the box body 100 is pushed in the upright state.

[0087] The luggage cart 10 of the present application adopts a bracket 200 so that the box body 100 can remain stable whether in an upright state or an inclined state, and an additional seat 400 is added to make it more convenient to use.

[0088] refer to Figures 1 to 8 , the bracket 200 includes:

[0089] The main rod 210 adopts a telescopic structure. The top of the main rod 210 is provided with a first handrail 211, and the bottom is provided with a first group 310 of rollers 300. The box body 100 is detachably installed against the main rod 210.

[0090] The diagonal support rod 220 is rotatably coupled to the main rod 210, and corresponds to the unfolded state and the folded state when rotated to different angles. The bottom of the diagonal support rod 220 is mounted with a second group 320 of rollers 300. Preferably, the rotating portion of the diagonal support rod 220 is arranged near the top side of the box body 100.

[0091] In order to facilitate installation with the box body 100, a base 212 is further provided at the bottom of the main rod 210. The first group 310 of the rollers 300 is installed at the bottom of the base 212. The box body 100 has a back side 110 that is in contact with the bracket 200, and the bottom of the back side 110 is superimposed on the base 212. Furthermore, the bottom of the back side 110 is partially recessed to accommodate the base 212. The outer surface of the base 212 is flush with the bottom of the box body 100, making the overall appearance more beautiful. When the box body 100 is in an upright state, the bottoms of the first group 310 and the third group 330 of the rollers 300 are coplanar and support the luggage cart 10. In one embodiment, the rollers 300 are arranged in two groups in each group and are arranged on both sides of the width direction of the bracket 200. The diameter of the second group 320 is larger than the diameter of the first group 310.

[0092] When the box body 100 is in the tilted state, the third group 330 of rollers 300 is suspended.

[0093] When the box 100 is in an inclined state and the bracket 200 is in a folded state, only the first group 310 of the rollers 300 is supported on the ground;

[0094] The box body 100 is in an inclined state, and the bracket 200 is in an unfolded state, and the first group 310 and the second group 320 of the rollers 300 are supported on the ground.

[0095] refer to Figures 9 to 23 Another embodiment of the present application provides an expandable luggage cart 10, comprising:

[0096] The box body 100 has a relatively upright state and an inclined state;

[0097] The bracket 200 has a deformable structure and has two relative states: an expanded state and a folded state. In the expanded state, the bracket 200 has a herringbone structure with a forked bottom portion, and in the folded state, the forked bottom portion is closed together.

[0098] The rollers 300 include at least two groups. When the bracket 200 is in the unfolded state, each group is located at a different fork of the bracket 200. When the bracket 200 is in the folded state, the box 100 can be maintained in an upright state by one of the forked rollers 300, while the other forked rollers 300 are suspended.

[0099] The seat 400 is mounted on the bracket 200 and is used for sitting or placing items.

[0100] In one embodiment, the bracket 200 includes:

[0101] The main rod 210 adopts a telescopic structure. The top of the main rod 210 is provided with a first handrail 211, and the bottom is provided with a first group 310 of rollers 300. The box body 100 is detachably installed against the main rod 210.

[0102] The diagonal support rod 220 is rotatably matched with the main rod 210, and corresponds to the unfolded state and the folded state when rotated to different angles. The bottom of the diagonal support rod 220 is installed with the second group 320 of rollers 300;

[0103] The housing 100 is held in an upright position by the first group 310 .

[0104] To facilitate installation of the box 100, a base 212 is provided at the bottom of the main rod 210. The first group 310 of rollers 300 is mounted on the bottom of the base 212 (the bottom is a plate-like structure), and the bottom of the box 100 is superimposed on the base 212. Furthermore, the base 212 includes a bottom plate and a peripherally closed or semi-open enclosure 213 at the edge. The bottom plate and enclosure 213 form an installation area 214, into which the bottom of the box 100 is placed.

[0105] There are many ways to connect the main rod 210 and the base 212. For example, an axially arranged positioning sleeve (upright on the bottom plate) is provided on the base 212, and the main rod 210 extends into the positioning sleeve and has an interference fit with it. Of course, other methods can also be adopted, and the specific selection can be made according to needs.

[0106] In order to realize the vertical placement of the box body 100, there are 3 to 4 rollers 300 in the first group 310, wherein all the rollers 300 are not collinear. In this embodiment, the number of the rollers 300 is preferably 4, and the line connecting the four rollers 300 is a rectangle.

[0107] In the inclined state, some of the rollers 300 in the first group 310 are suspended, and the remaining rollers 300 and the second group 320 work together to achieve the stability of the luggage cart 10. Figure 19 status.

[0108] When the box body 100 is placed upright, the forks of the second group 320 in the bracket 200 can be relatively swung to different angles, such as Figure 18 As shown, when a locking mechanism is configured, the fork can even be leveled to form a support platform with the seat 400 or the top surface of the box 100.

[0109] refer to Figures 1 to 23 A second armrest 230 is also installed on the main rod 210 above the seat 400. The second armrest 230 can be held by children sitting on the seat 400. When the box body 100 is in an inclined state and pulled forward, the child can hold the second armrest 230 to avoid falling from the seat 400, thereby increasing safety.

[0110] The installation position of the seat plate 400 is adjacent to the rotation axis of the diagonal support rod 220 and the main rod 210. The rotation axis can be referred to Figure 22The seat plate 400 can be suspended above the box body, or can be against the top side of the box body 100, that is, the box body 100 can provide auxiliary support, reducing the strength requirement between the seat plate 400 and the bracket 200.

[0111] Of course, the rotational cooperation portion between the diagonal support rod 220 and the main rod 210 is provided with a rotation locking structure for maintaining the rotation angle of the two, so as to keep the bracket 200 in the expanded state or other desired angle.

[0112] In one embodiment, the main rod 210 comprises a multi-stage sliding nested rod body, each of which is provided with a cooperating telescopic locking structure. The first armrest 211 is provided with an unlocking operating member that is linked to the telescopic locking structure. To prevent accidental operation, the unlocking operating member is also equipped with a second lock, requiring the second lock to be unlocked before the unlocking operating member can be actuated to shorten the main rod 210 to a predetermined length.

[0113] Furthermore, the diagonal support rod 220 is generally in an inverted U shape, and the second group 320 of rollers 300 is two rollers 300, which are respectively installed at the two bottom ends of the inverted U shape. In order to increase the structural strength, the inverted U shape is provided with a reinforcing cross bar 221 near the opening.

[0114] In this embodiment, the box 100 and the bracket 200 are detachably connected. The box 100 has a back side 110 that abuts against the bracket 200. A coupling groove 120 is provided on the outer surface of the back side 110. At least a portion of the bracket 200 is embedded in the coupling groove 120 when folded. Preferably, the bracket 200 does not protrude from the back side 110 of the box 100 when folded, making the overall shape more simple and beautiful. Furthermore, a mutually cooperating anti-detachment structure is provided between the box 100 and the bracket 200 to prevent the bracket 200 from detaching from the box 100.

[0115] The bracket 200 includes a main rod 210 and a diagonal support rod 220 that are rotatably matched. A first group 310 of rollers 300 is mounted on the bottom of the main rod 210. The box 100 is detachably mounted against the main rod 210. A second group 320 of rollers 300 is mounted on the bottom of the diagonal support rod 220.

[0116] When the bracket 200 is folded, the second group 320 of the rollers 300 is placed in the corresponding coupling grooves 120. When folded, the second group 320 does not protrude beyond the width of the box 100. Furthermore, a mutually cooperating positioning structure is provided between the bracket 200 and the coupling grooves 120 to retain the diagonal brace rods 220 in the coupling grooves 120.

[0117] The box body 100 can adopt an existing structure. For example, the box body 100 is a closed structure and includes a box bottom 130 and a box cover 140 that cooperate with each other, wherein the box bottom 130 is detachably connected to the bracket 200, and the box cover 140 is located on one side of the box bottom 130 in the horizontal direction.

[0118] The technical features of the above-described embodiments may be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as no contradiction exists between these combinations of technical features, they should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be deemed that the drawing also discloses examples of combinations of the various embodiments involved.

[0119] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present application, and such modifications and improvements are all within the scope of protection of the present application.

Claims

1. Expandable luggage cart, characterized by: include: The box body has a relatively upright state and an inclined state; The bracket adopts a deformable structure and has relative expanded and folded states. In the expanded state, the bracket is in a herringbone shape with a forked bottom portion, and in the folded state, the forks are closed together. Rollers, the rollers comprising at least two groups, each group being located at a different fork of the bracket when the bracket is in an unfolded state, and the box body being able to be maintained in an upright position by the rollers of one fork, while the rollers of the other fork are suspended when the bracket is in a folded state; The seat is installed on the bracket and is used for sitting or placing things.

2. The expandable luggage cart according to claim 1, characterized in that: The bracket comprises: The main rod adopts a telescopic structure, the top of the main rod is provided with a first handrail, the bottom is provided with a first group of the rollers, and the box body is detachably installed against the main rod; The diagonal support rod is rotatably matched with the main rod, and corresponds to the unfolded state and the folded state when rotated to different angles, and the bottom of the diagonal support rod is installed with the second group of rollers; The box body is maintained in an upright state by the first group.

3. The expandable luggage cart according to claim 2, characterized in that: A bottom bracket is further provided at the bottom of the main rod, and the first group of rollers is mounted on the bottom of the bottom bracket; The bottom of the box body is stacked on the bottom support.

4. The expandable luggage cart according to claim 3, characterized in that: The base includes a bottom plate and a peripherally closed or semi-open enclosure at the edge. The bottom plate and the enclosure form an installation area, and the bottom of the box body is placed in the installation area.

5. The expandable luggage cart according to claim 2, characterized in that: The installation position of the seat plate is adjacent to the rotation axis of the diagonal support rod and the main rod.

6. The expandable luggage cart according to claim 1, characterized in that: The box body is detachably connected to the bracket. The box body has a back side that is in contact with the bracket. A coupling groove is provided on the outer surface of the back side. At least a portion of the bracket is embedded in the coupling groove in the folded state.

7. The expandable luggage cart according to claim 6, characterized in that: The bracket does not protrude from the back side of the box body in the folded state.

8. The expandable luggage cart according to claim 6, characterized in that: The bracket includes a main rod and an oblique support rod that are rotatably matched, the bottom of the main rod is equipped with a first group of rollers, the box body is detachably mounted against the main rod, and the bottom of the oblique support rod is equipped with a second group of rollers; When the bracket is in the folded state, the second group of rollers is placed in the corresponding coupling grooves.

9. The expandable luggage cart according to claim 8, characterized in that: A mutually cooperating positioning structure is provided between the bracket and the coupling groove for retaining the diagonal support rod in the coupling groove.

10. The expandable luggage cart according to claim 6, characterized in that: The box body is a closed structure and includes a box bottom and a box cover that cooperate with each other, wherein the box bottom is detachably connected to the bracket, and the box cover is located on one side of the box bottom in the horizontal direction.

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