Frame structure and foldable carrier

Abstract

The utility model discloses a frame structure and a foldable carrier, the frame structure has a length direction and a width direction which are opposite, the frame structure comprises a plurality of structural units which are sequentially arranged in the length direction, and each structural unit independently has a folded state and an unfolded state which are opposite. Each structural unit comprises two groups of supporting columns, a bottom frame and a first side baffle, and each group of supporting columns is vertically arranged on the two sides of the corresponding structural unit in the length direction; the bottom frame is of a deformable structure so as to adapt to state switching of the structural unit where the bottom frame is located, and the bottom frame is connected between the two sets of supporting columns. The first side baffles are at least arranged on the two sides of the structural unit in the width direction. Each structural unit is independently folded or unfolded, so that the frame structure has a plurality of different sizes so as to adapt to different cargo loading and using environments.

Description

TECHNICAL FIELD

[0001] The utility model relates to a technical field of handcart, concretely is a frame structure and collapsible carrier. BACKGROUND

[0002] The handcart is a carrier for carrying children and moving, which includes a frame structure and wheels, handlebars and the like installed on the frame structure. For example, the publication number CN220076404U discloses a foldable handcart, which only has one folding state and the opposite unfolding state, and the size of the whole vehicle is only one in the unfolding state. With the increasing richness of modern life, only one size cannot fully meet the daily use environment. SUMMARY

[0003] The present application provides a frame structure with different sizes in different unfolding states to meet daily needs.

[0004] The frame structure of the collapsible carrier of the present application has opposite length and width directions, and the frame structure includes a plurality of structural units arranged in sequence along the length direction, each of the structural units independently has opposite folding and unfolding states, and each of the structural units includes:

[0005] The support column includes two groups, each group is vertically arranged on both sides of the length direction of the structural unit;

[0006] The bottom frame is a deformable structure to adapt to the state switching of the structural unit, and the bottom frame is connected between the two groups of support columns;

[0007] The first side stop is arranged on at least both sides of the width direction of the structural unit.

[0008] The following also provides several optional modes, but not as an additional limitation of the above overall scheme, just a further supplement or preferred, without technical or logical contradiction, each optional mode can be combined with the above overall scheme, and the combination of multiple optional modes can also be combined.

[0009] Optionally, the first side stop adopts a deformable structure to adapt to the state switching of the structural unit, in the unfolded state, the first side stop is distributed on the upper part of the structural unit, and in the folded state, the first side stop extends from the upper part to the lower part of the structural unit.

[0010] Optionally, the first side stop has opposite top and bottom parts, the top part is hinged to the corresponding side support column, and the bottom part is slidingly fitted along the corresponding side support column.

[0011] Optionally, the first side stop adopts a scissor structure, and the scissor structure includes one or a plurality of X-shaped units connected with each other.

[0012] Optionally, in the folded state, the two groups of support columns of the same structural unit are close to each other, the middle part of the bottom frame in the length direction is moved upward, and the length direction folding occurs.

[0013] Optionally, in the folded state, all the support columns of the same structural unit are close to each other, the central region of the bottom frame is moved upward, and the folding in both the length and width directions occurs.

[0014] Optionally, the same structural unit is configured with four support columns, in the folded state, all the support columns of the same structural unit are close to each other, the central region of the bottom frame is folded upward and surrounded by the four support columns.

[0015] Optionally, each group of support columns is two, which are arranged on both sides of the width direction of the structural unit.

[0016] Optionally, in the same structural unit, the first side stop is arranged around.

[0017] Optionally, a plurality of X-type units are arranged in an array.

[0018] Optionally, the plurality of X-type units are arranged in a single row structure, and the arrangement mode is:

[0019] from top to bottom, or

[0020] in the length direction.

[0021] Optionally, in the same structural unit, the support columns on the same side of the width direction of the structural unit are respectively a first support column and a second support column, and the first support column and the second support column are located on both sides of the length direction of the structural unit.

[0022] The scissor structure comprises:

[0023] a first connecting rod, one end of which is hingedly connected to the top of the first support column, and the other end of which is slidingly connected to the second support column;

[0024] a second connecting rod, one end of which is hingedly connected to the top of the second support column, and the other end of which is slidingly connected to the first support column;

[0025] The middle parts of the first support column and the second support column are hingedly connected to each other.

[0026] Optionally, in the adjacent two structural units, the first side stops on the same side of the width direction are independently arranged with support columns adjacent to each other, and the two adjacent support columns are fixed to each other by the connecting members at the top and the bottom.

[0027] Optionally, in the two adjacent structural units, the first side stops on the same side in the width direction share a same support column, and the support column is provided with two guide structures arranged side by side, and each first side stop is matched with a corresponding guide structure.

[0028] Optionally, at least one of the structural units is provided with a locking structure to maintain the unfolded state and / or the folded state.

[0029] Optionally, each of the structural units is provided with a locking structure to maintain the unfolded state and / or the folded state.

[0030] Optionally, the locking structure adopts at least one of the following manners:

[0031] acting on the first side stop itself and maintaining the shape of the first side stop;

[0032] acting between the first side stop and the support column and maintaining the relative position relationship between the first side stop and the support column;

[0033] acting on the bottom frame itself and maintaining the shape of the bottom frame;

[0034] acting between the bottom frame and the support column and maintaining the relative position relationship between the bottom frame and the support column;

[0035] acting between the two support columns and maintaining the distance between the two support columns;

[0036] acting between the two structural units.

[0037] Optionally, the frame structure is further provided with a push-pull rod, and the bottom of the push-pull rod is movably connected to the corresponding support column and / or the bottom frame.

[0038] Optionally, the push-pull rod is of a folding and / or telescopic structure.

[0039] The application further provides a foldable carrier, which comprises the frame structure described above and wheels mounted on the frame structure, and the wheels are arranged at least in the structural units at the two ends along the length direction of the frame structure.

[0040] The frame structure of the application can be folded or unfolded independently, so that the frame structure has multiple different sizes to adapt to different goods loading and use environments. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 a structural view of the frame structure of an embodiment of the application in the unfolded state;

[0042] Figure 2 a structural view of the frame structure of an embodiment of the application in the unfolded state;

[0043] Figure 3 a structural view of the frame structure of an embodiment of the application in the unfolded state;Figure 2 Structure view of one of the structural units of the middle frame structure when folded;

[0044] Figure 4 For Figure 2 Structure view of another structural unit of the middle frame structure when folded;

[0045] Figure 5 For Figure 2 Structure view of all structural units of the middle frame structure when folded along the length direction;

[0046] Figure 6 Structure view of the frame structure of another embodiment of the present application in the unfolded state;

[0047] Figure 7 For Figure 6 Structure view of one of the structural units of the middle frame structure when folded;

[0048] Figure 8 Structure view of the foldable carrier of an embodiment of the present application in the unfolded state;

[0049] Figure 9 For Figure 8 Structure view of all structural units of the foldable carrier when folded along the length direction.

[0050] The reference signs in the drawings are explained as follows:

[0051] 1000, frame structure; 100, structural unit; 110, support column; 111, first support column; 112, second support column;

[0052] 120, bottom frame; 130, first side stop; 131, first connecting rod; 132, second connecting rod; 140, second side stop; 150, connecting piece; 160, push-pull rod; 170, wheel. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0054] It should be noted that when an assembly is referred to as being “connected” with another assembly, it can be directly connected with the other assembly or there can be a middle assembly. When an assembly is referred to as being “disposed on” another assembly, it can be directly disposed on the other assembly or there can be a middle assembly.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0056] In this application, the terms "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number or order of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0057] Referring to Figures 1-5 The present application provides a framework structure 1000 with the length direction X and the width direction Y shown in the figure, the framework structure 1000 includes a plurality of structure units 100 arranged in sequence along the length direction, each structure unit 100 has a folding state and an unfolding state independently, and the folding and unfolding of the structure unit 100 mainly reflects the change in size in at least the length direction, for example, when folding, the size of the structure unit 100 in at least the length direction is reduced, and when unfolding, it is the opposite.

[0058] Among them, the structure unit 100 includes two groups of support columns 110, a bottom frame 120 and a first side stop, the two groups of support columns 110 are arranged along the width direction, each group includes at least two support columns 110, and two support columns 110 in a group are respectively erected on both sides of the structure unit in the length direction, and when the structure unit 100 is folded or unfolded, each support column 110 in a group moves towards or away from each other.

[0059] The bottom frame 120 is a deformable structure to adapt to the state switching of the structure unit 100, and the bottom frame 120 is connected between the two groups of support columns 110, specifically, the bottom frame 120 is folded or unfolded synchronously when the structure unit 100 is folded or unfolded. The first side stop 130 is arranged on at least both sides of the structure unit in the width direction to adapt to the movement between each support column 110. One of the structure units forms a containing space, or a plurality of structure units form a containing space, and one containing space loads one cloth cover.

[0060] The framework structure of the embodiment is configured with a plurality of structure units along the length direction, each structure unit can be independently folded and unfolded to change the length size of the framework structure, which can best adapt to the loading of corresponding articles in size, and reasonable size is also beneficial to storage and movement.

[0061] Referring to Figure 2In an embodiment, a second side stop 140, such as an X-shaped scissor lever, is arranged between the two groups of support columns at least at both ends of the frame structure 1000 in the length direction, so that the frame structure can be folded in the width direction again after all the structural units are folded, which is defined as the storage state of the frame structure. The figure only shows one embodiment of the second side stop 140, which does not limit the structure of the second side stop 140.

[0062] In another embodiment, at least one structural unit can be independently folded in the length and width directions.

[0063] In an embodiment, the first side stop 130 adopts a deformable structure to adapt to the state switching of the structural unit 100. In the unfolded state, the first side stop 130 is distributed on the upper part of the structural unit 100, and in the folded state, the first side stop 130 is partially extended from the upper part to the lower part of the structural unit 100. The first side stop 130 adopts a scissor structure, which includes one or a plurality of X-shaped units that are connected to each other. The figure shows one X-shaped unit, which includes a first connecting rod 131 and a second connecting rod 132. The number of support columns in the same group is two, and the two support columns are respectively a first support column 111 and a second support column 112 in the length direction. One end of the first connecting rod 131 is hingedly connected to the top of the first support column 111, and the other end is slidingly connected to the second support column 112. One end of the second connecting rod 132 is hingedly connected to the top of the second support column 112, and the other end is slidingly connected to the first support column 111. The middle parts of the first support column 111 and the second support column 112 are hingedly connected to each other. When folded, the lower ends of the first connecting rod 131 and the second connecting rod 132 slide downward.

[0064] In other embodiments, a plurality of X-shaped units are arranged in an array, such as arranged in sequence from top to bottom or in sequence along the length direction.

[0065] In an embodiment, when the structural unit 100 is folded, the corresponding bottom frame 120 moves upward in the middle part in the length direction and the bottom frame 120 is folded in the length direction. In another embodiment, the central area of the bottom frame 120 moves upward and is folded in both the length and width directions and is surrounded by the four support columns.

[0066] In an embodiment, the first side stop 130 between adjacent structural units 100 is omitted, for example Figures 2-5 The first side stops 130 on the same side in the width direction are independently arranged with support columns 110 at the top and the bottom, respectively, and are fixed to each other by the connecting pieces 150 at the top and the bottom. Or as Figure 6 and Figure 7As shown, the first side stops 130 on the same side of the width direction share the same support column 110 at the positions adjacent to each other, and the support column is provided with two guide structures arranged side by side, and each first side stop 130 is matched with the corresponding guide structure.

[0067] In order to keep the frame structure in different folding states, i.e. to stably maintain a size, at least one structural unit 100 is configured with a locking structure to keep the structural unit itself in a folding state or an unfolded state. Preferably, each structural unit is independently configured with a locking structure.

[0068] The locking structure adopts at least one of the following manners:

[0069] acting on the first side stop 130 itself and keeping the shape of the first side stop 130;

[0070] acting between the first side stop 130 and the support column 110 and keeping the relative position relationship therebetween;

[0071] acting on the bottom frame 120 itself and keeping the shape of the bottom frame 120;

[0072] acting between the bottom frame 120 and the support column 110 and keeping the relative position relationship therebetween;

[0073] acting between the two support columns 110 and keeping the distance therebetween;

[0074] acting between the two structural units 100.

[0075] In an embodiment, the frame structure 1000 is further provided with a push-pull rod 160, and the bottom of the push-pull rod 160 is movably connected to the corresponding support column 110 and / or the bottom frame 120. Wherein, wheels 170 are installed at the bottom of the frame structure 1000, forming a foldable carrier, i.e. a foldable trolley.

[0076] The frame structure of the present application is configured with a plurality of structural units in the length direction, each of which can be independently folded and unfolded to change the length size of the frame structure, so as to optimally adapt to the loading of corresponding articles in the size, and the reasonable size is also beneficial to storage and movement.

[0077] The technical features of the above embodiments can be combined in any manner. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope disclosed in the present specification. When the technical features in different embodiments are embodied in the same figure, it can be considered that the figure also discloses the combination of each embodiment involved.

[0078] The above embodiments only express several implementation ways of the present application, and the description is specific and detailed, but it should not be understood as a limitation to the patent scope. It should be pointed out that, for ordinary skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A frame structure of a foldable carrier having opposite length and width directions, characterized by, The frame structure comprises a plurality of structural units arranged in sequence along a length direction, each of the structural units independently having opposite folded and unfolded states, and each of the structural units comprises: a plurality of support columns, each of the support columns being arranged on a corresponding side of a corresponding structural unit along a length direction of the corresponding structural unit; a bottom frame, which is a deformable structure to adapt to a state switching of the corresponding structural unit, and is connected between the support columns; a first side stop arranged on at least two sides of the corresponding structural unit along a width direction of the corresponding structural unit.

2. The frame structure of claim 1, wherein, The first side stop is a deformable structure to adapt to the state switching of the corresponding structural unit, and in the unfolded state, the first side stop is distributed on an upper portion of the corresponding structural unit, and in the folded state, the first side stop extends from the upper portion to a lower portion of the corresponding structural unit.

3. The frame structure of claim 2, wherein, The first side stop has opposite top and bottom portions, the top portion is hinged to the support column on the corresponding side, and the bottom portion is slidingly fitted along the support column on the corresponding side.

4. The frame structure of claim 3, wherein, The first side stop adopts a scissor structure, and the scissor structure comprises one or a plurality of X-shaped units connected with each other.

5. The frame structure of claim 4, wherein, In the same structural unit, the support columns on the same side along the width direction of the structural unit are a first support column and a second support column, and the first support column and the second support column are located on two sides of the structural unit along the length direction. The scissor structure comprises: a first connecting rod, one end of which is hinged to the top portion of the first support column, and the other end of which is slidingly connected to the second support column; a second connecting rod, one end of which is hinged to the top portion of the second support column, and the other end of which is slidingly connected to the first support column; the middle portions of the first support column and the second support column are hinged to each other.

6. The frame structure of claim 1, wherein In the adjacent two structural units, the first side stops on the same side along the width direction are independently arranged at positions adjacent to each other with respect to the support columns, and the two adjacent support columns are fixed to each other by the connecting members at the top portions and the bottom portions.

7. The frame structure of claim 1, wherein In the adjacent two structural units, the first side stops on the same side along the width direction share the same support column at positions adjacent to each other, and the support column is provided with two guide structures arranged side by side, and each of the first side stops is matched with a corresponding guide structure.

8. The frame structure of claim 1, wherein, At least one structural unit is provided with a locking structure to maintain the unfolded state and / or the folded state.

9. The frame structure of claim 1, wherein, Each structural unit is independently provided with a locking structure to maintain the unfolded state and / or the folded state.

10. Foldable carrier, characterized in that The frame structure comprises a plurality of structural units arranged in sequence along a length direction, each of the structural units independently having opposite folded and unfolded states, and each of the structural units comprises: a plurality of support columns, each of the support columns being arranged on a corresponding side of a corresponding structural unit along a length direction of the corresponding structural unit; a bottom frame, which is a deformable structure to adapt to a state switching of the corresponding structural unit, and is connected between the support columns; a first side stop arranged on at least two sides of the corresponding structural unit along a width direction of the corresponding structural unit. The first side stop is a deformable structure to adapt to the state switching of the corresponding structural unit, and in the unfolded state, the first side stop is distributed on an upper portion of the corresponding structural unit, and in the folded state, the first side stop extends from the upper portion to a lower portion of the corresponding structural unit. The first side stop has opposite top and bottom portions, the top portion is hinged to the support column on the corresponding side, and the bottom portion is slidingly fitted along the support column on the corresponding side. The first side stop adopts a scissor structure, and the scissor structure comprises one or a plurality of X-shaped units connected with each other. In the same structural unit, the support columns on the same side along the width direction of the structural unit are a first support column and a second support column, and the first support column and the second support column are located on two sides of the structural unit along the length direction. The scissor structure comprises: a first connecting rod, one end of which is hinged to the top portion of the first support column, and the other end of which is slidingly connected to the second support column; a second connecting rod, one end of which is hinged to the top portion of the second support column, and the other end of which is slidingly connected to the first support column; the middle portions of the first support column and the second support column are hinged to each other. In the adjacent two structural units, the first side stops on the same side along the width direction are independently arranged at positions adjacent to each other with respect to the support columns, and the two adjacent support columns are fixed to each other by the connecting members at the top portions and the bottom portions. In the adjacent two structural units, the first side stops on the same side along the width direction share the same support column at positions adjacent to each other, and the support column is provided with two guide structures arranged side by side, and each of the first side stops is matched with a corresponding guide structure. At least one structural unit is provided with a locking structure to maintain the unfolded state and / or the folded state. Each structural unit is independently provided with a locking structure to maintain the unfolded state and / or the folded state. The frame structure comprises a plurality of structural units arranged in sequence along a length direction, each of the structural units independently having opposite folded and unfolded states, and each of the structural units comprises: a plurality of support columns, each of the support columns being arranged on a corresponding side of a corresponding structural unit along a length direction of the corresponding structural unit; a bottom frame, which is a deformable structure to adapt to a state switching of the corresponding structural unit, and is connected between the support columns; a first side stop arranged on at least two sides of the corresponding structural unit along a width direction of the corresponding structural unit. The first side stop is a deformable structure to adapt to the state switching of the corresponding structural unit, and in the unfolded state, the first side stop is distributed on an upper portion of the corresponding structural unit, and in the folded state, the first side stop extends from the upper portion to a lower portion of the corresponding structural unit. The first side stop has opposite top and bottom portions, the top portion is hinged to the support column on the corresponding side, and the bottom portion is slidingly fitted along the support column on the corresponding side. The first side stop adopts a scissor structure, and the scissor structure comprises one or a plurality of X-shaped units connected with each other. In the same structural unit, the support columns on the same side along the width direction of the structural unit are a first support column and a second support column, and the first support column and the second support column are located on two sides of the structural unit along the length direction. The scissor structure comprises: a first connecting rod, one end of which is hinged to the top portion of the first support column, and the other end of which is slidingly connected to the second support column; a second connecting rod, one end of which is hinged to the top portion of the second support column, and the other end of which is slidingly connected to the first support column; the middle portions of the first support column and the second support column are hinged to each other. In the adjacent two structural units, the first side stops on the same side along the width direction are independently arranged at positions adjacent to each other with respect to the support columns, and the two adjacent support columns are fixed to each other by the connecting members at the top portions and the bottom portions. In the adjacent two structural units, the first side stops on the same side along the width direction share the same support column at positions adjacent to each other, and the support column is provided with two guide structures arranged side by side, and each of the first side stops is matched with a corresponding guide structure. At least one structural unit is provided with a locking structure to maintain the unfolded state and / or the folded state. Each structural unit is independently provided with a locking structure to maintain the unfolded state and / or the folded state. The frame structure comprises a plurality of structural units arranged in sequence along a length direction, each of the structural units independently having opposite folded and unfolded states, and each of the structural units comprises: a plurality of support columns, each of the support columns being arranged on a corresponding side of a corresponding structural unit along a length direction of the corresponding structural unit; a bottom frame, which is a deformable structure to adapt to a state switching of the corresponding structural unit, and is connected between the support columns; a first side stop arranged on at least two sides of the corresponding structural unit along a width direction of the corresponding structural unit. The first side stop is a deformable structure to adapt to the state switching of the corresponding structural unit, and in the unfolded state, the first side stop is distributed on an upper portion of the corresponding structural unit, and in the folded state, the first side stop extends from the upper portion to a lower portion of the corresponding structural unit. The first side stop has opposite top and bottom portions, the top portion is hinged to the support column on the corresponding side, and the bottom portion is slidingly fitted along the support column on the corresponding side. The first side stop adopts a scissor structure, and the scissor structure comprises one or a plurality of X-shaped units connected with each other. In the same structural unit, the support columns on the same side along the width direction of the structural unit are a first support

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