Folding frame and cart

Abstract

The utility model discloses a folding frame and cart, folding frame includes rear foot pipe subassembly, front foot pipe subassembly, handlebar subassembly, seat pole subassembly, first connecting rod and second connecting rod, first connecting rod rotatory connection front foot pipe subassembly, second connecting rod rotatory connection rear foot pipe subassembly, handlebar subassembly rotatory connection first connecting rod and second connecting rod, and the front foot pipe subassembly rotatory connection rear foot pipe subassembly, and seat pole subassembly rotatory connection second connecting rod and rear foot pipe subassembly, and first connecting rod, second connecting rod, rear foot pipe subassembly and handlebar subassembly construct first connecting rod mechanism, and seat pole subassembly, front foot pipe subassembly, rear foot pipe subassembly and second connecting rod construct second connecting rod mechanism, wherein, folding frame has folding state and unfolding state, and in unfolding state, the front foot pipe subassembly unfolds forward relative to rear foot pipe subassembly, and handlebar subassembly unfolds backward relative to rear foot pipe subassembly, in folding state, handlebar subassembly, rear foot pipe subassembly and front foot pipe subassembly fold, can simplify the structure of folding frame, and the linkage relation is simplified.

Description

Technical Field

[0001] This utility model relates to the field of trolley technology, and in particular to a folding frame and a trolley having the folding frame. Background Technology

[0002] Baby strollers are an important tool for assisting childcare in daily life, allowing babies to recline or sit upright, and facilitating outings with infants and toddlers. As people's demands for stroller functionality continue to increase, existing strollers with convenient feeding functions include a frame and tray assembly. Front and rear leg tube assemblies are installed on the front and rear bottom sides of the frame, respectively, and a handle assembly is located on the rear side of the frame. However, foldable baby strollers suffer from the problem of having many rods and complex linkages. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide a folding frame with a first linkage mechanism and a second linkage mechanism, whereby the two linkage mechanisms form a linkage mechanism, thereby enabling synchronous folding and retraction, simplifying the structure of the folding frame and the linkage relationships.

[0004] Another objective of this invention is to provide a trolley, including the aforementioned folding frame.

[0005] A folding frame according to an embodiment of the present invention includes a rear leg tube assembly, a front leg tube assembly, a handlebar assembly, a seat post assembly, a first link, and a second link. The first link is rotatably connected to the front leg tube assembly, the second link is rotatably connected to the rear leg tube assembly, the handlebar assembly is rotatably connected to the first link and the second link, the front leg tube assembly is rotatably connected to the rear leg tube assembly, and the seat post assembly is rotatably connected to the second link and the rear leg tube assembly. The first link, the second link, the rear leg tube assembly, and the handlebar assembly constitute a first linkage mechanism, and the seat post assembly, the front leg tube assembly, the rear leg tube assembly, and the second link constitute a second linkage mechanism. The folding frame has a folded state and an unfolded state. In the unfolded state, the front leg tube assembly unfolds forward relative to the rear leg tube assembly, and the handlebar assembly unfolds backward relative to the rear leg tube assembly. In the folded state, the handlebar assembly, the rear leg tube assembly, and the front leg tube assembly are folded.

[0006] According to the embodiment of this utility model, the folding frame is provided with a first linkage mechanism and a second linkage mechanism at the same time. The second link in the first linkage mechanism and the rear leg tube assembly are rotatably connected to the seat rod assembly in the second link mechanism. That is, the two linkage mechanisms form a linkage mechanism, which can realize synchronous folding, which helps to simplify the structure of the folding frame and simplify the linkage relationship.

[0007] In addition, the folding frame according to the above embodiments of this utility model may also have the following additional technical features:

[0008] In some examples of this utility model, the second connecting rod includes a rod body and a rod support. The first end of the rod body is rotatably connected to the rear leg tube assembly, and the second end of the rod body is rotatably connected to the handle assembly. The rod support is connected to the rod body and is relatively stationary with respect to the rod body. The seat rod assembly is rotatably connected to the rod support.

[0009] In some examples of this utility model, the rod support is connected between the first end and the second end of the rod body and is close to the first end.

[0010] In some examples of this utility model, the rod support is connected to the first end of the rod body and extends beyond the first end of the rod body.

[0011] In some examples of this utility model, the seat post assembly includes a first rod body and a connecting rod. A first end of the first rod body is rotatably connected to the front leg tube assembly, and a second end of the first rod body is connected to the connecting rod. The first rod body and the connecting rod are relatively stationary, and the connecting rod is rotatably connected to the rod support.

[0012] In some examples of this utility model, the folding frame further includes a first connector, which is connected between the connecting rod and the rod support and rotates relative to the connecting rod. The first connector includes a first connecting portion, a second connecting portion and an intermediate connecting portion, which is connected between the first connecting portion and the second connecting portion. The first connecting portion is sleeved on the outer periphery of the connecting rod, and the second connecting portion is sleeved on the outer periphery of the rod support and fixedly connected by fasteners. At least one of the first connecting portion and the second connecting portion has an opening.

[0013] In some examples of this utility model, the first connecting member is a flexible member.

[0014] In some examples of this utility model, the first connector is integrally formed.

[0015] In some examples of this utility model, the first link includes at least two links arranged at intervals in the left-right direction, and a cockpit is provided between adjacent first links.

[0016] In some examples of this utility model, the seat post assembly includes a first rod body, a first end of the first rod body is rotatably connected to the front leg tube assembly, a second end of the first rod body is rotatably connected to the rod support, and a second linkage mechanism is constructed between the first rod body, the front leg tube assembly, the rear leg tube assembly, and the rod support.

[0017] In some examples of this utility model, the handle assembly includes a connecting rod portion and a grip portion. Two connecting rod portions are arranged opposite each other in the left-right direction. The grip portion is connected to the first end of the two connecting rod portions. The first connecting rod is rotatably connected to the first end of the connecting rod portion, and the second connecting rod is rotatably connected to the second end of the connecting rod portion. The connecting rod portion, the first connecting rod, the second connecting rod, and the rear leg tube assembly form the first connecting rod mechanism.

[0018] The trolley according to an embodiment of the present invention includes the aforementioned folding frame. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the trolley structure in some embodiments of the present invention (showing the unfolded state of the folding frame);

[0020] Figure 2 This is a cross-sectional view of the trolley in some embodiments of the present invention (showing the first linkage mechanism and the second linkage mechanism);

[0021] Figure 3 This is a schematic diagram of the trolley structure in some embodiments of the present invention (showing the folding frame in a semi-open state);

[0022] Figure 4 This is a schematic diagram of the trolley structure in some embodiments of the present invention (showing the folded state of the folding frame);

[0023] Figure 5 This is a partial structural schematic diagram of the cart in some other embodiments of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the first connecting member in some embodiments of this utility model.

[0025] Figure label:

[0026] 1000, cart;

[0027] 100. Folding frame; 110. First linkage mechanism; 120. Second linkage mechanism; 101. Cockpit; 10. Rear leg tube assembly; 11. First support rod; 20. Front leg tube assembly; 21. Second support rod; 30. Handlebar assembly; 31. Linkage part; 32. Handlebar part; 40. Seatpost assembly; 41. First rod body; 411. Connecting rod; 42. Second rod body; 51. First link; 52. Second link; 521. Rod body; 522. Rod support; 61. First connector; 611. First connecting part; 612. Second connecting part; 613. Middle connecting part; 601. Opening; 62. Second connector; 71. Unlocking part;

[0028] 200. Dinner plate assembly; 300. Cup holder; 410. Front wheel; 420. Rear wheel. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] Combination Figures 1 to 6 According to an embodiment of the present invention, the folding frame 100 includes a rear leg tube assembly 10, a front leg tube assembly 20, a handlebar assembly 30, a seat post assembly 40, a first link 51, and a second link 52. The first link 51 is rotatably connected to the front leg tube assembly 20, the second link 52 is rotatably connected to the rear leg tube assembly 10, the handlebar assembly 30 is rotatably connected to the first link 51 and the second link 52, the front leg tube assembly 20 is rotatably connected to the rear leg tube assembly 10, and the seat post assembly 40 is rotatably connected to the second link 52 and the rear leg tube assembly 10.

[0031] Specifically, the folding frame 100 can be applied to the stroller 1000. The handlebar assembly 30 can be the handle portion of the folding frame 100, allowing the user to easily grip or directly contact it to push or pull the stroller 1000, thereby controlling the direction and speed of the stroller 1000's movement. The front leg tube assembly 20 can be the front support structure of the folding frame 100, supporting the front weight of the folding frame 100 and helping the front wheel 410 to turn on the ground. The rear leg tube assembly 10 can be the rear support structure of the folding frame 100, supporting the rear weight of the folding frame 100 and maintaining the stability of the folding frame 100. The cooperation of the front leg tube assembly 20 and the rear leg tube assembly 10 allows the folding frame 100 to maintain balance, preventing tipping or slipping when parked and maintaining stability during movement. When the folding frame 100 is applied to the stroller 1000, it enables the stroller 1000 to have folding and unfolding functions.

[0032] More specifically, combined Figure 2 The first link 51, the second link 52, the rear leg tube assembly 10, and the handlebar assembly 30 constitute the first linkage mechanism 110. That is, when the user changes one of the first link 51, the second link 52, or the handlebar assembly 30, such as by rotating one of the links or assemblies, the other links in the first linkage mechanism 110 can move in a predetermined direction, thereby changing the state of the folding frame 100.

[0033] The seat post assembly 40, the front leg tube assembly 20, the rear leg tube assembly 10, and the second link 52 constitute the second linkage mechanism 120. As mentioned above, since the seat post assembly 40 rotatably connects the second link 52 and the rear leg tube assembly 10, when the state of the first linkage mechanism 110 changes, the movement of the second link 52 will drive the seat post assembly 40 to change the state of the second linkage mechanism 120, so that the other links in the second linkage mechanism 120 can move in a predetermined direction, thereby changing the state of the folding frame 100.

[0034] Among them, combined Figure 1 and Figure 4 The folding frame 100 has a folded state and an unfolded state. In the unfolded state, the front leg tube assembly 20 unfolds forward relative to the rear leg tube assembly 10, and the handlebar assembly 30 unfolds backward relative to the rear leg tube assembly 10. Thus, the space constructed between the front leg tube assembly 20 and the rear leg tube assembly 10 can be used for riding or supporting objects, thereby making it convenient for the user to use the folding frame 100.

[0035] Generally, when the folding frame 100 is used with the trolley 1000, the trolley 1000 is often pushed forward. Therefore, the handle assembly 30 unfolds backward to make it easier for the user to hold and push the trolley 1000 forward.

[0036] In the folded state, the handlebar assembly 30, rear leg tube assembly 10, and front leg tube assembly 20 are folded. When not in use, the folding frame 100 can be folded up, with the front leg tube assembly 20 and rear leg tube assembly 10 close together, reducing the volume occupied by the folding frame 100, thus saving storage space or improving flexibility during transport, such as making it easier to carry when going out, thereby improving flexibility during use.

[0037] Combination Figure 2 and Figure 3In practical applications, when the frame 100 needs to be folded, the handlebar assembly 30 can be pressed towards the rear leg tube assembly 10. The handlebar assembly 30 can drive the first link 51 and the second link 52, which are rotatably connected to the handlebar assembly 30, to also move towards the rear leg tube. The rear leg tube assembly 10 is a fixed rod. The first link 51, the second link 52, and the handlebar assembly 30 are all folded towards the rear leg tube assembly 10, realizing the folding of the link and the handlebar assembly 30. At the same time, when the second link 52 moves towards the rear leg tube assembly 10, it can drive the seat post assembly 40 to rotate, thereby driving the front leg tube assembly 20, which is rotatably connected to the seat post assembly 40, to move towards the rear leg tube assembly 10. When the rear leg tube assembly 10 is stationary, the front leg tube assembly 20 can move towards the rear leg tube assembly 10.

[0038] Therefore, according to the folding frame 100 of this utility model embodiment, by simultaneously setting a first linkage mechanism 110 and a second linkage mechanism 120, and the second link 52 in the first linkage mechanism 110 and the rear leg tube assembly 10 and the seat post assembly 40 in the second link 52 are rotatably connected, that is, a linkage mechanism is formed by the two linkage mechanisms, thereby achieving synchronous folding, which is beneficial to simplifying the structure of the folding frame 100 and simplifying the linkage relationship.

[0039] Combination Figure 1 In some embodiments of this utility model, the second link 52 includes a link body 521. The first end of the link body 521 is rotatably connected to the rear leg tube assembly 10, and the second end of the link body 521 is rotatably connected to the handle assembly 30. Specifically, the link body 521 is rotatably connected between the rear leg tube assembly 10 and the handle assembly 30. Thus, when the user drives the handle assembly 30 to fold or unfold, the link body 521 can rotate relative to the rear leg tube assembly 10, unfolding when away from the rear leg tube assembly 10 and folding when close to the rear leg tube assembly 10.

[0040] The second link 52 also includes a link support 522, which is connected to the link body 521 and is relatively stationary. The seat rod assembly 40 rotatably connects to the link support 411. The relatively stationary position of the link support 522 and the link body 521 ensures that their directions of movement are the same. The link support 522 can easily connect to the seat rod assembly 40 to achieve linkage between the link body 521 and the seat rod assembly 40, thereby transmitting the movement of the first link mechanism 110 to the second link mechanism 120. More specifically, two link bodies 521 can be arranged opposite each other along the left-right direction of the folding frame 100. The link support 522 can connect between the two link bodies 521 and also provide support, which helps improve the structural stability of the second link 52 and the overall structural stability of the folding frame 100.

[0041] Furthermore, in some embodiments of this utility model, the rod support 522 connects the first end and the second end of the main body of the rod 411 and is close to the first end. This allows the rod support 522 to be closer to the seat rod assembly 40, thereby improving the transmission effect and structural compactness. Specifically, in conjunction with the foregoing, the rod support 522 is located between the two rod bodies 521, which can improve the structural stability of the second connecting rod 52. The rod support 522 is connected to the side of the two rod bodies 521 closest to the first end, so that the second connecting rod 52 forms a "U"-shaped structure. The closed end of the "U"-shaped structure is suitable for connection to the seat rod assembly 40. Since the rod support 522 extends in the left and right direction, the connection range with the seat rod assembly 40 can be expanded, increasing the fitting space between the rod support 522 and the seat rod assembly 40, which is beneficial to improving connection stability. The open end of the "U"-shaped structure can be connected to the opposite ends of the handle assembly 30, that is, the second ends of the two rod bodies 521 are respectively connected to the opposite ends of the handle assembly 30.

[0042] Combination Figure 1 In some embodiments of this utility model, the seat post assembly 40 includes a first rod body 41 and a connecting rod 411. The first end of the first rod body 41 is rotatably connected to the front leg tube assembly 20, and the second end of the first rod body 41 is connected to the connecting rod 411. The first rod body 41 and the connecting rod 411 are relatively stationary. The connecting rod 411 is rotatably connected to the rod support 522. In this way, the connecting rod 411 can be used to connect with the rod support 522. The power of the rod support 522 can be transmitted to the first rod body 41 through the connecting rod 411. The first rod body 41 is rotatably connected to the front leg tube assembly 20, thereby driving the front leg tube assembly 20 to unfold or fold.

[0043] Specifically, the rod support 522 extends in the left-right direction, and two rod bodies 521 located on the left and right sides are respectively connected to the left and right ends of the rod 411 support. The connecting rod 411 extends in the left-right direction, and two first rod bodies 41 located on the left and right sides are respectively connected to the left and right ends of the connecting rod 411. In this way, the distance between the connecting rod 411 and the rod support 522 is relatively short, and they extend in the same direction, which facilitates the connection between the two. This allows the power of the rod body 521 to be transmitted through the rod support 522 to the first rod body 41 connected to the connecting rod 411. The second end of the first rod body 41 can be opposite to the first end of the rod body 521 in the front-back direction, so that the connecting rod 411 can rotate the connecting rod support 522. The first rod body 41, the front leg tube assembly 20, the rear leg tube assembly 10, and the rod support 522 form a second linkage mechanism 120.

[0044] More specifically, in some embodiments of this utility model, the folding frame 100 further includes a first connector 61, which is connected between the connecting rod 411 and the rod support 522 and rotates relative to the connecting rod 411. Thus, the rotation of the rod support 522 can drive the connecting rod 411 to rotate, so that the rod support 522 can drive the connecting rod 411 to move, thereby driving the first rod body 41 to move.

[0045] Specifically, in combination Figure 6 The first connecting member 61 includes a first connecting portion 611, a second connecting portion 612, and an intermediate connecting portion 613. The intermediate connecting portion 613 is connected between the first connecting portion 611 and the second connecting portion 612. The first connecting portion 611 is sleeved on the outer periphery of the connecting rod 411, and the second connecting portion 612 is sleeved on the outer periphery of the rod support 522 and fixedly connected by fasteners. At least one of the first connecting portion 611 and the second connecting portion 612 has an opening 601. For example, the opening 601 is provided in the second connecting portion 612. During assembly, the connecting rod 411 can be inserted into the first connecting portion 611 through the first opening 601, and then the rod support 522 can be inserted into the second connecting portion 612 through the first opening 601. The second connecting portion 612 may have a positioning hole, and the fastener can be installed in the second connecting portion 612 through the positioning hole to achieve a fixed connection between the second connecting portion 612 and the rod support 522.

[0046] In some embodiments of this utility model, the first connecting member 61 is a flexible member, or at least a portion thereof is a flexible structure. This facilitates the first connecting portion 611 and the second connecting portion 612 being fitted onto the outside of the rod, i.e., deformation occurs during fitting, allowing the rod to enter the connecting portion. Alternatively, the interior of the first connecting member 61 may be a flexible structure, facilitating assembly, while the exterior is relatively rigid, thus improving the structural strength of the first connecting member 61.

[0047] In some embodiments of this utility model, the first connector 61 is integrally formed to facilitate manufacturing and assembly.

[0048] In some other embodiments of this utility model, the rod support 522 connects to the first end of the rod body 521 and extends beyond the first end of the rod body 521. Specifically, the rod support 522 connecting to the first end of the rod body 521 can be closer to the seat rod assembly 40, and the rod support 522 extending beyond the rod body 521 facilitates connection with the seat rod assembly 40, thereby improving the transmission effect and structural compactness. Specifically, in combination with Figure 5The box shows a rod body 521 and a rod support 522. There can be two rod bodies 521 arranged opposite each other in the left-right direction, and two rod supports 522 arranged opposite each other in the left-right direction. The two rod supports 522 are respectively connected to the first end of the rod body 521. The rod supports 522 extend forward to facilitate connection with the horizontally extending seat rod assembly 40. The two rod supports 522 can be connected to the left and right sides of the seat rod assembly 40 respectively, which improves connection stability and transmission stability. The second ends of the two rod bodies 521 are respectively connected to the opposite ends of the handle assembly 30. Furthermore, a crossbar for connection and support can be provided between the two rod bodies 521.

[0049] More specifically, in some other embodiments of this utility model, combined with Figure 5 The box shows the mating structure between the rod support 522 and the first rod 41. The seat rod assembly 40 includes the first rod 41, with its first end rotatably connected to the front leg tube assembly 20 and its second end rotatably connected to the main body of the rod 411. A second linkage mechanism 120 is constructed between the first rod 41, the front leg tube assembly 20, the rear leg tube assembly 10, and the rod support 522. Specifically, the seat rod assembly 40 includes two first rods 41 arranged in the left-right direction. The two first rods 41 are rotatably connected to the rod supports 522 connected to the two rod bodies 521, thus eliminating the need for the aforementioned connecting rod 411 structure.

[0050] Combination Figure 2 and Figure 3 In some embodiments of this utility model, the handle assembly 30 includes a connecting rod portion 31 and a gripping portion 32. Two connecting rod portions 31 are arranged opposite each other in the left-right direction. The gripping portion 32 is connected to the first end of the two connecting rod portions 31. A first connecting rod 51 is rotatably connected to the first end of the connecting rod portion 31, and a second connecting rod 52 is rotatably connected to the second end of the connecting rod portion 31. The connecting rod portion 31, the first connecting rod 51, the second connecting rod 52, and the rear leg tube assembly 10 form a first linkage mechanism 110. In the unfolded state, the second connecting rod 52 and the connecting rod portion 31 are approximately on the same straight line. The second connecting rod 52, the connecting rod portion 31, and the rear leg tube assembly 10 form an approximately triangular structure, which can improve the stability in the unfolded state. In the semi-expanded state, which changes from an unfolded state to a folded state, the user presses down on the handle 32, causing the first link 51 and the second link 52 to rotate at one end connected to the link part 31, and the second link 52 of the first link 51 to move downward, so that the link part 31, the first link 51, the second link 52 and the rear leg tube assembly 10 form a quadrilateral structure.

[0051] Combination Figure 1In some embodiments of this utility model, the first link 51 includes at least two arranged at intervals in the left-right direction, and a cabin 101 is provided between adjacent first links 51. That is, a space for setting up the cabin 101 is constructed between two first links 51. When the folding frame 100 is applied to a single stroller 1000, two first links 51 can be provided, and a cabin 101 space is formed between the two first links 51. When the folding frame 100 is applied to a double stroller, three first links 51 can be provided, and a cabin 101 space is formed between two adjacent first links 51. The three first links 51 arranged at intervals in the left-right direction can construct two cabin 101 spaces, thereby facilitating the simultaneous riding of two children and providing convenience for users.

[0052] Combination Figure 1 and Figure 2 In some embodiments of this utility model, the folding frame 100 further includes a second connector 62. The front leg tube assembly 20 is rotatably connected to the first end of the second connector 62, the first connecting rod 51 is rotatably connected to the second end of the second connector 62, and the rear leg tube assembly 10 is fixedly connected to the third end of the second connector 62, wherein the third end of the second connector 62 is located between the first and second ends. Thus, when folded, the front leg tube assembly 20 and the handlebar assembly 30 both move closer to the rear leg tube assembly 10, forming a three-fold folding structure.

[0053] Combination Figure 1 In some embodiments of this invention, the seat post assembly 40 further includes a second rod 42, which is connected to the front ends of the two first rods 41 and extends forward and / or downward. Thus, the first rods 41 can form a seating area, and the second rod 42 can form a leg support portion, improving seating comfort. The first rods 41 are rotatably connected to the second rod 42, allowing adjustment of the angle between the second rod 42 and the first rod 41. For example, when the second rod 42 rotates downward relative to the first rod, it can be used to support a child's legs, improving seating comfort. When the second rod 42 rotates to be horizontal or nearly horizontal with the first rod 41, the child's legs can be laid flat, allowing the child to recline while seated.

[0054] Combination Figure 1In some embodiments of this utility model, the folding frame 100 further includes a locking mechanism, which includes a locking part and an unlocking part 71. The unlocking part 71 is convexly connected to the locking part and is located on the handlebar assembly 30 or the grip part 32. The locking part is located between the first link 51 and the link part 31 and / or the second link 52 and the link part 31. Therefore, when a user needs to fold the frame 100, they can directly press the unlocking part 71 on the handlebar assembly 30 to unlock either the first link 51 or the second link 52, and then press down on the handlebar assembly 30 to perform the folding operation. In a specific embodiment of this application, the locking part is located between the link part 31 of the handlebar assembly 30 and the first link 51. In the unfolded state, the locking part locks the first link 51, preventing it from rotating. In the folded state, the locking part unlocks the first link 51, allowing it to rotate.

[0055] To improve the structural stability of the folding frame 100, combined with Figure 1 In some embodiments of the present invention, the rear leg tube assembly 10 further includes a first support rod 11 connected in the left-right direction within the rear leg tube assembly 10, and the front leg tube assembly 20 further includes a second support rod 21 connected in the left-right direction within the front leg tube assembly 20.

[0056] This utility model also proposes a trolley 1000, including the aforementioned folding frame 100. By applying the aforementioned folding frame 100 to the trolley 1000, the trolley 1000 can be folded, which is beneficial to simplifying the structure of the trolley 1000.

[0057] In some embodiments of this utility model, the trolley 1000 also includes a tray assembly 200 detachably mounted on the front side of the folding frame 100, which can be installed when needed and removed when the trolley 1000 needs to be folded, making it convenient for the rider to use.

[0058] In some embodiments of this utility model, the trolley 1000 also includes a cup holder 300, which is detachably mounted on the handle assembly 30 or the grip portion 32 of the folding frame 100, making it convenient for the user pushing the trolley 1000 to take out the cup.

[0059] More specifically, the front foot tube assembly 20 is connected to the front wheel 410, and the rear foot tube assembly 10 is connected to the rear wheel 420.

[0060] In the description of this utility model, it should be understood that the terms "horizontal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A folding bicycle frame (100), characterized in that, The assembly includes a rear leg tube assembly (10), a front leg tube assembly (20), a handlebar assembly (30), a seat post assembly (40), a first link (51), and a second link (52). The first link (51) is rotatably connected to the front leg tube assembly (20), and the second link (52) is rotatably connected to the rear leg tube assembly (10). The handlebar assembly (30) is rotatably connected to the first link (51) and the second link (52). The front leg tube assembly (20) is rotatably connected to the rear leg tube assembly (10). The leg tube assembly (10) is rotatably connected to the second link (52) and the rear leg tube assembly (10). The first link (51), the second link (52), the rear leg tube assembly (10), and the handle assembly (30) constitute a first linkage mechanism (110). The seat tube assembly (40), the front leg tube assembly (20), the rear leg tube assembly (10), and the second link (52) constitute a second linkage mechanism (120). The folding frame (100) has a folded state and an unfolded state. In the unfolded state, the front leg tube assembly (20) unfolds forward relative to the rear leg tube assembly (10), and the handlebar assembly (30) unfolds backward relative to the rear leg tube assembly (10). In the folded state, the handlebar assembly (30), the rear leg tube assembly (10), and the front leg tube assembly (20) are folded.

2. The folding frame (100) according to claim 1, characterized in that, The second connecting rod (52) includes a rod body (521) and a rod support (522). The first end of the rod body (521) is rotatably connected to the rear leg tube assembly (10), and the second end of the rod body (521) is rotatably connected to the handle assembly (30). The rod support (522) is connected to the rod body (521) and is relatively stationary with respect to the rod body (521). The seat rod assembly (40) is rotatably connected to the rod support (522).

3. The folding frame (100) according to claim 2, characterized in that, The rod branch (522) connects the first end and the second end of the rod body (521) and is close to the first end.

4. The folding frame (100) according to claim 2, characterized in that, The rod branch (522) is connected to the first end of the rod body (521) and extends beyond the first end of the rod body (521).

5. The folding frame (100) according to claim 3, characterized in that, The seat post assembly (40) includes a first rod body (41) and a connecting rod (411). The first end of the first rod body (41) is rotatably connected to the front leg tube assembly (20), and the second end of the first rod body (41) is connected to the connecting rod (411). The first rod body (41) and the connecting rod (411) are relatively stationary, and the connecting rod (411) is rotatably connected to the rod support (522).

6. The folding frame (100) according to claim 5, characterized in that, It also includes a first connector (61) connected between the connecting rod (411) and the rod support (522) and rotatable relative to the connecting rod (411). The first connector (61) includes a first connecting portion (611), a second connecting portion (612), and an intermediate connecting portion (613). The intermediate connecting portion (613) is connected between the first connecting portion (611) and the second connecting portion (612). The first connecting portion (611) is sleeved on the outer periphery of the connecting rod (411), and the second connecting portion (612) is sleeved on the outer periphery of the rod support (522) and fixedly connected by fasteners. At least one of the first connecting portion (611) and the second connecting portion (612) is provided with an opening (601); and / or The first connector (61) is a flexible component; and / or The first connector (61) is integrally formed.

7. The folding frame (100) according to claim 1, characterized in that, The first link (51) includes at least two arranged at intervals in the left-right direction, and a cabin (101) is provided between adjacent first links (51).

8. The folding frame (100) according to claim 2, characterized in that, The seat post assembly (40) includes a first rod (41), the first end of which is rotatably connected to the front leg tube assembly (20), and the second end of which is rotatably connected to the rod support (522). The first rod (41), the front leg tube assembly (20), the rear leg tube assembly (10), and the rod support (522) form a second linkage mechanism (120).

9. The folding frame (100) according to claim 1, characterized in that, The handle assembly (30) includes a connecting rod portion (31) and a grip portion (32). Two connecting rod portions (31) are arranged opposite each other in the left-right direction. The grip portion (32) is connected to the first end of the two connecting rod portions (31). The first connecting rod (51) is rotatably connected to the first end of the connecting rod portion (31), and the second connecting rod (52) is rotatably connected to the second end of the connecting rod portion (31). The first connecting rod mechanism (110) is constructed between the connecting rod portion (31), the first connecting rod (51), the second connecting rod (52), and the rear leg tube assembly (10).

10. A trolley (1000), characterized in that, Includes the folding frame (100) according to any one of claims 1-9.

Images