Carrier

Abstract

The utility model belongs to the technical field of carrying devices, and discloses a carrier which comprises a first frame body, a second frame body, a folding support and a limiting structure, and the second frame body and the first frame body are arranged in a spaced mode. The folding support is connected with the first frame body and the second frame body, the folding support can drive the second frame body to be close to the first frame body when being switched from the unfolded state to the folded state, and when the carrier is used, the folding support is switched from the folded state to the unfolded state, and the folding support drives the second frame body to be away from the first frame body, so that unfolding of the whole carrier is achieved. The limiting structure is arranged on at least one of the second frame body and the folding support and used for limiting the rotation angle of the second frame body relative to the first frame body to be smaller than or equal to an angle threshold value. Through the limiting structure, the second frame body can be limited to only rotate within the preset angle range, large-angle deflection of the second frame body in the unfolding state and in the folding process is prevented, the second frame body is prevented from turning over and overturning accidents, and the stability and use safety of the carrier are improved.

Description

Technical Field

[0001] This utility model relates to the field of transportation device technology, and in particular to a vehicle. Background Technology

[0002] Vehicles such as strollers or trailers used to transport children are typically designed to be foldable for easy storage when not in use. Foldable vehicles specifically include an upper frame, a lower frame, and a folding bracket connecting the upper and lower frames. The folding bracket can be folded up or unfolded to allow the upper frame to move closer to the lower frame or upward away from the lower frame.

[0003] In the prior art, in the unfolded state of the vehicle, the upper frame is prone to large-angle deflection. The upper frame may be connected to components such as plates and cloaks, which makes the vehicle unstable and prone to overturning. Moreover, when the folding bracket is driven to fold so that the upper frame moves closer to the lower frame, the upper frame is also prone to large-angle deflection, resulting in poor stability of the upper frame during the folding process, easy to overturn and overturn, and inconvenient to use.

[0004] Therefore, there is an urgent need for a vehicle to solve the aforementioned problems in the existing technology. Utility Model Content

[0005] The purpose of this invention is to provide a vehicle that can prevent the upper frame from deflecting at a large angle when it is in the unfolded state and during the folding process, thereby preventing the upper frame from overturning and tipping over, and improving the stability and safety of the vehicle.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A vehicle is provided, comprising:

[0008] First frame;

[0009] The second frame is spaced apart from the first frame;

[0010] A folding bracket is connected to the first frame and the second frame. The folding bracket has a folded state and an unfolded state. When the folding bracket switches from the unfolded state to the folded state, it can drive the second frame to move closer to the first frame.

[0011] A limiting structure is provided on at least one of the second frame and the folding bracket, the limiting structure being used to limit the rotation angle of the second frame relative to the first frame to be less than or equal to an angle threshold.

[0012] As a preferred embodiment of the carrier provided by this utility model, the folding bracket is rotatably connected to the second frame;

[0013] The limiting structure includes a guide part and a sliding part. One of the guide part and the sliding part is disposed on the second frame, and the other is disposed on the folding bracket. The sliding part can slide with the guide part within a preset angle range.

[0014] As a preferred embodiment of the carrier provided by this utility model, the guide part includes a limiting groove, the sliding part includes a limiting protrusion, the limiting protrusion is engaged in the limiting groove and slidably cooperates with the limiting groove;

[0015] The limiting groove extends in an arc shape.

[0016] As a preferred embodiment of the carrier provided by this utility model, when the folding bracket is in the unfolded state, the limiting protrusion abuts against the inner wall of one end of the limiting groove.

[0017] As a preferred embodiment of the carrier provided by this utility model, the second frame includes a frame body and a rotating connection part disposed on the frame body. The rotating connection part is rotatably connected to the folding bracket. The limiting structure includes a damping element. The damping element is located between the frame body and the folding bracket.

[0018] As a preferred embodiment of the vehicle provided by this utility model, one damping element is provided; or, at least two damping elements are provided, with at least two damping elements respectively disposed on both sides of the rotating connection portion.

[0019] As a preferred embodiment of the carrier provided by this utility model, the carrier further includes a connector, which is connected between the first frame and the second frame. When the folding bracket is in the unfolded state, the connector is in a tensioned state and is tensioned between the first frame and the second frame. When the folding bracket is in the folded state, the connector is in a relaxed state.

[0020] As a preferred embodiment of the carrier provided by this utility model, the connecting member includes a sleeve that surrounds the first frame and the second frame circumferentially;

[0021] Alternatively, the connector may include a plurality of traction parts, each of which is connected between the first frame and the second frame, and the plurality of traction parts are spaced apart along the circumference of the first frame;

[0022] Alternatively, the connector may include multiple traction parts, with at least one traction part on each side of the folding bracket, connecting between the first frame and the second frame.

[0023] As a preferred embodiment of the carrier provided by this utility model, the folding bracket includes a first connecting rod, a second connecting rod, and a push rod;

[0024] The push rod is connected to the first frame via the first connecting rod, and the second connecting rod is connected to both the push rod and the first frame. The first frame, the first connecting rod, the second connecting rod, and the push rod constitute a four-bar linkage mechanism. The second frame is connected to either the push rod or the second connecting rod.

[0025] The first connecting rod, the second connecting rod, and the push rod can move towards the first frame and drive the second frame towards the first frame, so that the folding bracket switches from the unfolded state to the folded state;

[0026] The limiting structure is provided between the second frame and the push rod; and / or, the limiting structure is provided between the second frame and the second connecting rod;

[0027] When the folding bracket is in the unfolded state, the second frame is parallel to the first frame;

[0028] And / or, the vehicle further includes a tray and / or a canopy assembly, the tray and / or the canopy assembly being connected to the second frame.

[0029] As a preferred embodiment of the carrier provided by this utility model, when the folding bracket is in the unfolded state, the first connecting rod and the push rod are collinear, and the first frame, the first connecting rod, the push rod and the second connecting rod form a triangular structure;

[0030] And / or, when the folding bracket is in the unfolded state, the angle between the push rod and the first frame, and the angle between the second connecting rod and the first frame are both acute angles;

[0031] And / or, when the folding bracket is in the folded state, the push rod, the second connecting rod, and the first frame are parallel to each other;

[0032] And / or, when the folding bracket is in the folded state, the push rod, the first connecting rod, and the first frame are parallel to each other.

[0033] The beneficial effects of this utility model are:

[0034] This utility model provides a carrier. When the folding bracket switches from an unfolded state to a folded state, the folding bracket moves the second frame closer to the first frame to achieve folding and storage of the entire carrier. When the carrier is in use, the folding bracket switches from a folded state to an unfolded state, and the folding bracket moves the second frame away from the first frame to achieve unfolding of the entire carrier. The limiting structure can limit the rotation of the second frame, restricting it to a preset angle range. This prevents the second frame from deflecting at large angles in the unfolded state and during folding, avoiding overturning accidents and improving the stability and safety of the carrier. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0036] Figure 1 This is an isometric view of the vehicle in the deployed state according to a specific embodiment of this utility model;

[0037] Figure 2 This is a side view of the vehicle in the deployed state according to a specific embodiment of the present invention;

[0038] Figure 3 This is a side view of the vehicle provided in the specific embodiment of the present invention when it is in the first half-folded state;

[0039] Figure 4 This is a side view of the vehicle in the second half-folded state according to a specific embodiment of the present utility model;

[0040] Figure 5 This is a first side view of the vehicle in a folded state according to a specific embodiment of the present invention;

[0041] Figure 6 This is a second side view of the vehicle provided in the specific embodiment of this utility model when it is in a folded state;

[0042] Figure 7 This is an isometric view of the vehicle in a folded state according to a specific embodiment of this utility model;

[0043] Figure 8 This is a schematic diagram of the structure of the second frame of the carrier provided in a specific embodiment of the present utility model;

[0044] Figure 9This is an exploded view of the second frame and the plate of the carrier provided in a specific embodiment of this utility model;

[0045] Figure 10 This is a schematic diagram of the vehicle after the second frame and the plate are hidden, according to a specific embodiment of the present invention;

[0046] Figure 11 yes Figure 10 A magnified view of a section at point A in the middle;

[0047] Figure 12 This is a cross-sectional view of the vehicle provided in a specific embodiment of this utility model;

[0048] Figure 13 yes Figure 12 A magnified view of a section at point B in the middle;

[0049] Figure 14 This is a schematic diagram showing the connection between the first connecting rod, the first support rod, and the push rod according to a specific embodiment of this utility model.

[0050] In the picture:

[0051] 1. First frame; 2. Second frame; 3. First connecting rod; 4. Second connecting rod; 5. Push rod; 7. First support rod; 8. Second support rod; 9. Connector; 10. Dinner tray; 20. Traction component; 30. Wheel; 40. Support beam; 50. Frame unlocking component;

[0052] 21. Frame body; 22. Rotating connection part;

[0053] 211. Half-frame; 221. Limiting groove; 222. Plate mounting part; 223. Canopy mounting part;

[0054] 31. Second groove; 32. First pivot connection part;

[0055] 51. Push rod body; 52. Mounting components;

[0056] 511. Fixed rod; 512. Adjusting rod; 513. Second pivot connection; 514. Push rod unlocking component;

[0057] 521. Sleeve part; 522. Rod body part; 5211. Limiting protrusion;

[0058] 71. First groove;

[0059] 110. Plate hanging part; 120. Hook and slot;

[0060] 210. Installation frame; 220. Telescopic pole. Detailed Implementation

[0061] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0062] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0063] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0065] Example 1

[0066] like Figure 1 and Figure 2 As shown, this embodiment provides a carrier that has a folded state and an unfolded state. The carrier includes a first frame 1, a second frame 2, a folding bracket, and a limiting structure.

[0067] The second frame 2 is spaced apart from the first frame 1. (See reference...) Figure 1 and Figure 2The second frame 2 is exemplarily positioned above the first frame 1. A folding bracket is connected to the first frame 1 and the second frame 2, and has a folded state and an unfolded state. When the folding bracket switches from the unfolded state to the folded state, it pulls the second frame 2 closer to the first frame 1 to achieve folding and storage of the entire vehicle. When the vehicle is in use, the folding bracket switches from the folded state to the unfolded state, pulling the second frame 2 away from the first frame 1 to achieve unfolding of the entire vehicle. A limiting structure is provided on at least one of the second frame 2 and the folding bracket. The limiting structure is used to limit the rotation angle of the second frame 2 relative to the first frame 1 to be less than or equal to an angle threshold. By setting the limiting structure, the second frame 2 can be restricted to rotating only within a preset angle range (i.e., less than or equal to the angle threshold), preventing the second frame 2 from deflecting at a large angle in the unfolded state and during the folding process, avoiding the second frame 2 from overturning or tipping over, and improving the stability and safety of the vehicle.

[0068] The aforementioned angle threshold values ​​are, for example, less than or equal to 30°. That is, the maximum deflection angle of the second frame 2 is less than or equal to 30°. Further, the aforementioned angle threshold values ​​are, for example, 25°, 20°, 15°, 10°, 5°, 0°, etc. That is, the maximum deflection angle corresponding to the second frame 2 is less than or equal to 25°, 20°, 15°, 10°, 5°, 0° (which restricts the second frame 2 from rotating relative to the first frame 1). These values ​​can be set according to the specific design requirements of the vehicle product and are not limited to the angle ranges listed above.

[0069] like Figure 1 , Figure 2 and Figure 3 As shown, the folding bracket includes a first link 3, a second link 4, and a push rod 5. Push rod 5 is connected to the first frame 1 via the first link 3, and the second link 4 is connected to both the push rod 5 and the first frame 1. The first frame 1, first link 3, second link 4, and push rod 5 form a four-bar linkage. The second frame 2 is connected to either push rod 5 or second link 4. The first link 3, second link 4, and push rod 5 can move towards the first frame 1 and drive the second frame 2 towards the first frame 1, thus switching the folding bracket of the vehicle from an unfolded state to a folded state. See also... Figure 2 The vehicle also includes a connector 9, which is connected to both the first frame 1 and the second frame 2. When the second frame 2 moves relative to the first frame 1, it can drive the connector 9 to switch between a tensioned state and a relaxed state.

[0070] Specifically, during the transition from the folded state to the unfolded state of the folding bracket, the connector 9 extends under the influence of the second frame 2, changing from a relaxed state to a tensioned state. That is, when the folding bracket is in the unfolded state, the connector 9 is in a tensioned state. At this time, the tensioned connector 9 and the limiting structure work together to prevent the second frame 2 from overturning or tipping over, thus maintaining the stability of the second frame 2. In other words, the connector 9 also serves to limit the movement of the second frame 2, further increasing its stability and improving safety during use.

[0071] When the folding bracket switches from the unfolded state to the folded state, the connector 9 changes from a tensioned state to a relaxed state under the action of the second frame 2. That is, when the folding bracket is in the folded state, the connector 9 is in a relaxed state, which facilitates the folding and storage of the entire vehicle.

[0072] Optionally, push rod 5 is a telescopic rod, capable of extending or retracting to change its length. For example... Figure 6 and Figure 7 As shown, push rod 5 is switched to the shortened state, further reducing the space occupied by the vehicle after folding.

[0073] In this embodiment, when the four-bar linkage consisting of the first frame 1, the first connecting rod 3, the second connecting rod 4, and the push rod 5 is retracted, it drives the second frame 2 to move closer to the first frame 1, so that the vehicle switches from the unfolded state to the folded state.

[0074] In this four-bar linkage, only a first link 3 and a second link 4 need to be set between the first frame 1 and the second frame 2. Therefore, the number of links on the vehicle can be greatly reduced, the difficulty of assembling and connecting the links can be reduced, the folding operation can be simplified, the volume of the folded vehicle can be reduced, and it is easier to store and carry, making it more practical.

[0075] Furthermore, when the second frame 2 moves closer to and retracts towards the first frame 1 under the action of the four-bar linkage, the connecting piece 9 is folded by the second frame 2. At this time, the connecting piece 9 changes from a tensioned state to a relaxed state as the second frame 2 moves. When the second frame 2 unfolds relatively away from the first frame 1 under the action of the four-bar linkage, the connecting piece 9 unfolds automatically under the pulling action of the second frame 2 and is tensioned between the first frame 1 and the second frame 2, eliminating the need for manual unfolding and smoothing, making it more convenient to use.

[0076] In this embodiment, the connector 9 is a sleeve surrounding the first frame 1 and the second frame 2, that is, the connector 9 is an integral structure that stops around the first frame 1 and the second frame 2. In other words, when the connector 9 is unfolded, it forms an accommodating space with the first frame 1 and the second frame 2, which can be used to accommodate items or people (such as children).

[0077] For example, the material of the glove can be fabric, plastic film, or a combination of fabric and plastic film; the glove can also be a woven mesh structure, etc.

[0078] In some embodiments, the connector 9 may include a plurality of traction parts, each of which is connected between the first frame 1 and the second frame 2. The plurality of traction parts are arranged at circumferential intervals along the first frame 1. When the vehicle is deployed, the second frame 2 pulls the plurality of traction parts to deploy and tension, resulting in lower cost.

[0079] For example, the traction part can be a traction rope or traction belt, such as a braided rope or a woven belt.

[0080] Furthermore, at least one traction part is provided on each side of the folding bracket, connecting the first frame 1 and the second frame 2. The traction parts on both sides of the folding bracket can effectively prevent the second frame 2 from swaying to both sides, giving the second frame 2 sufficient stability.

[0081] Specifically, see Figure 1 The folding brackets are connected to the left and right sides of the second frame 2 respectively. At least one traction part can be provided on both the front and rear sides of the vehicle. The front traction part connects between the front side of the first frame 1 and the front side of the second frame 2, and the rear traction part connects between the rear side of the first frame 1 and the rear side of the second frame 2. The traction parts on both sides effectively prevent the second frame 2 from swaying back and forth. For example, the two rotational connection points between the second frame 2 and the folding brackets are located in the middle of the second frame 2, and the traction parts on both sides can be symmetrically arranged relative to the middle of the second frame 2. Alternatively, the traction parts on both sides can be diagonally arranged relative to the second frame 2; for example, the front traction part is located in front of one of the rotational connection points, and the rear traction part is located behind the other rotational connection point.

[0082] In other embodiments, if the folding bracket is connected to the front and rear sides of the second frame 2 respectively, then at least one traction part can be provided on both the left and right sides of the carrier. The left traction part is connected between the left side of the first frame 1 and the left side of the second frame 2, and the right traction part is connected between the right side of the first frame 1 and the right side of the second frame 2. The traction parts on both sides can effectively prevent the second frame 2 from swaying left and right. For example, the two rotational connection points between the second frame 2 and the folding bracket are located in the middle of the second frame 2, and the traction parts on both sides can be symmetrically arranged relative to the middle of the second frame 2. Alternatively, the traction parts on both sides can also be arranged diagonally relative to the second frame 2. For example, the left traction part is located to the left of one of the rotational connection points, and the right traction part is located to the right of the other rotational connection point.

[0083] The aforementioned front, rear, left, and right sides refer to the positions of the person pushing the cart using push rod 5 as a reference. At this time, the person pushing the cart is located behind push rod 5.

[0084] Specifically, see Figure 2 and Figure 3 In the deployed state of the vehicle, push rod 5 extends upwards at an angle, reaching the side of the second frame 2 facing away from the first frame 1, facilitating user push. One end of the first connecting rod 3 is rotatably connected to the first frame 1, and the other end is rotatably connected to push rod 5. One end of the second connecting rod 4 is rotatably connected to the first frame 1, and the other end is rotatably connected to push rod 5. The rotatable connections between the first connecting rod 3 and push rod 5 are spaced apart from those between the second connecting rod 4 and push rod 5. When push rod 5 is pressed down, push rod 5, first connecting rod 3, and second connecting rod 4 all rotate to move closer to the first frame 1.

[0085] The second frame 2 is rotatably engaged with the push rod 5 or the second connecting rod 4. With this configuration, during the rotation of the push rod 5 and the second connecting rod 4, the second frame 2 will not be significantly swayed or even swayed at all. During the folding process, the second frame 2 can stably descend to approach the first frame 1.

[0086] Optionally, see Figure 2 When the vehicle is in the deployed state, the second frame 2 is parallel to the first frame 1. After the second frame 2 pulls the connecting piece 9 to unfold, a regular square space is formed inside the connecting piece 9. The space is relatively large and can accommodate two children. See also Figure 1 The second frame 2 has a plate 10 installed in the middle, and the two sides of the plate 10 are seating spaces, which can accommodate two children sitting opposite each other.

[0087] In some embodiments, see Figure 1 The push rod 5 includes a push rod body 51 and a mounting member 52. The mounting member 52 is connected to the push rod body 51 and is used to connect with the second connecting rod 4 and the second frame 2. Specifically, the end of the second connecting rod 4 away from the first frame 1 is rotatably connected to the mounting member 52, and the second frame 2 is rotatably engaged with the mounting member 52. The mounting member 52 is used for rotatable connection with both the second connecting rod 4 and the second frame 2. During the process of switching the vehicle to the folding state, the mounting member 52 rotates relative to the second frame 2 under the drive of the push rod body 51. The push rod body 51 swings around the rotation center of the mounting member 52 relative to the second frame 2, thereby driving the first connecting rod 3 and the second connecting rod 4 to rotate closer to the first frame 1.

[0088] In some other embodiments, the push rod 5 may only include the push rod body 51, without the mounting part 52. In this case, the second frame 2 and the second connecting rod 4 can be directly and movably connected to the push rod body 51.

[0089] See Figure 2 The mounting component 52 includes a sleeve portion 521 and a rod portion 522 connected together. The rod portion 522 is rotatably connected to the second connecting rod 4, and the sleeve portion 521 is fixedly sleeved on the push rod body 51 to ensure a stable connection with the push rod body 51. The sleeve portion 521 is also rotatably connected to the second frame 2.

[0090] See Figure 1 The push rod 51 is a telescopic rod, comprising a fixed rod 511 and an adjusting rod 512. The fixed rod 511 is connected to the first frame 1 via a first connecting rod 3. The sleeve portion 521 of the mounting member 52 is fixedly sleeved on the fixed rod 511. The rod body portion 522 of the mounting member 52 is angled with the fixed rod 511 to allow for rotatable connection with the second connecting rod 4. The fixed rod 511 is exemplarily a hollow rod, and the adjusting rod 512 is adjustablely inserted into the inner cavity of the fixed rod 511. The adjusting rod 512 has an extended state extending from the fixed rod 511 and a retracted state retracted to the fixed rod 511. In the unfolded state of the vehicle, the adjusting rod 512 is pulled out to the extended state for easy pushing by the vehicle personnel. In the folded state of the vehicle, the adjusting rod 512 is retracted to the retracted state.

[0091] In other embodiments, the fixed rod 511 and the adjusting rod 512 can also be rotatably connected. When the folding bracket is switched to the folded state, the adjusting rod 512 and the fixed rod 511 rotate relative to each other to bring them closer together, thereby folding the adjusting rod 512 and the fixed rod 511. Optionally, the fixed rod 511 and the adjusting rod 512 can be folded into a parallel state. When the folding bracket is unfolded, the adjusting rod 512 and the fixed rod 511 rotate relative to each other and move away from each other until the adjusting rod 512 and the fixed rod 511 are collinear, thereby unfolding the push rod 5. Furthermore, a locking structure is provided between the fixed rod 511 and the adjusting rod 512. When the two are folded into a parallel state and unfolded into a collinear state, the locking structure locks the adjusting rod 512 and the fixed rod 511 to prevent relative movement between them. The locking structure includes a locking protrusion and a locking groove. One of the adjusting rod 512 and the fixing rod 511 is provided with a locking protrusion, and the other is provided with a locking groove. When the adjusting rod 512 and the fixing rod 511 are folded to a parallel state and unfolded to a collinear state, they are engaged by the locking protrusion and the locking groove.

[0092] like Figure 5 The diagram shown is a schematic of the vehicle in a folded state, but at this time the adjusting rod 512 of the push rod 51 is in an extended state; Figure 6 and Figure 7 The diagram shows the vehicle in a folded state, where the adjusting rod 512 of the push rod 51 is housed within the fixing rod 511.

[0093] After the adjusting rod 512 is pulled out to its extended position, it can lock with the fixed rod 511, thus fixing the positions of both the fixed rod 511 and the adjusting rod 512. (See also...) Figure 1 A push-rod unlocking component 514 is provided on the adjusting rod 512. By operating the push-rod unlocking component 514, the lock between the fixing rod 511 and the adjusting rod 512 can be released, allowing the adjusting rod 512 to be smoothly stored inside the fixing rod 511. For example, the push-rod unlocking component 514 is in the form of a button.

[0094] For example, the adjusting rod 512 is a U-shaped rod, with a fixed rod 511 at each end. The two ends of the U-shaped rod can extend and retract within the corresponding fixed rod 511. The middle part of the U-shaped rod is the gripping part when the user pushes the vehicle. Optionally, the aforementioned push rod unlocking member 514 is provided in the middle part of the U-shaped rod. In other embodiments, the push rod unlocking member 514 may also be provided in other locations.

[0095] See Figure 1 and Figure 7 In some embodiments, the second frame 2 includes a frame body 21 and a rotating connecting part 22 disposed on the frame body 21. The rotating connecting part 22 is rotatably connected to the folding bracket. Specifically, the rotating connecting part 22 is rotatably connected to the mounting part 52 of the push rod 5 of the folding bracket. The frame body 21 includes two opposing half-frames 211, both of which are U-shaped with their openings facing each other. The two ends of the two half-frames 211 are connected by a rotating connecting part 22 to form the second frame 2. The two sides of the plate 10 are hung on the two rotating connecting parts 22, and the side of the rotating connecting part 22 facing away from the plate 10 is rotatably connected to the aforementioned sleeve part 521.

[0096] In other embodiments, the frame body 21 may also be an integral frame, with the rotating connection 22 disposed on the integral frame body 21. Alternatively, the second frame 2 may consist of only an integral frame without the rotating connection 22, and this integral frame may be rotatably connected to the mounting member 52 or to the push rod 51. For example, the middle part of the integral second frame 2 may be rotatably connected to the mounting member 52 or to the push rod 51; of course, other parts of the second frame 2 may also be rotatably connected to the mounting member 52 or to the push rod 51.

[0097] In some embodiments, the aforementioned limiting structure is provided between the second frame 2 and the push rod 51; and / or the aforementioned limiting structure is provided between the second frame 2 and the mounting member 52; and / or the aforementioned limiting structure is provided between the second frame 2 and the second connecting rod 4. When the carrier switches from the unfolded state to the folded state, the limiting structure can restrict the second frame 2 from rotating at a large angle or prevent the second frame 2 from rotating, thus preventing the second frame 2 from tipping over during folding and increasing the stability of the second frame 2 during folding.

[0098] It is understood that the aforementioned limiting structure can be set at any one or any two of the three positions: between the second frame 2 and the push rod 51, between the second frame 2 and the mounting part 52, and between the second frame 2 and the second connecting rod 4; or, the limiting structure can be set at all three positions.

[0099] For example, the limiting structure includes a guide portion and a sliding portion. In one feasible solution, the rotating connection portion 22 of the second frame 2 is provided with the aforementioned guide portion, and the sleeve portion 521 of the mounting member 52 is provided with the aforementioned sliding portion. The sliding portion slidably engages with the guide portion within a preset angle range, thereby limiting the rotation angle of the second frame 2 relative to the first frame 1 to below an angle threshold. The sliding engagement of the guide portion and the sliding portion can play a guiding and limiting role during the rotation of the mounting member 52 relative to the second frame 2, restricting the second frame 2 from deflecting at a large angle, thereby improving the stability of the second frame 2 in the unfolded state and when the carrier is folded.

[0100] In another possible solution, the guide portion can be provided on the sleeve portion 521 of the mounting member 52, and the sliding portion can be provided on the rotating connection portion 22 of the second frame 2.

[0101] In some embodiments, the guide portion includes a limiting groove 221, and the sliding portion includes a limiting protrusion 5211. Specifically, see Figure 8 The rotating connection portion 22 of the second frame 2 is provided with the aforementioned limiting groove 221, which extends in an arc shape; see also Figure 10 , Figure 11 , Figure 12 as well as Figure 13 The mounting part 521 of the mounting part 52 is provided with the aforementioned limiting protrusion 5211. The limiting protrusion 5211 is engaged in the limiting groove 221 and can slide with the limiting groove 221. During the rotation of the mounting part 52 relative to the second frame 2, it can play a guiding and limiting role, restricting the second frame 2 from deflecting at a large angle, thereby improving the stability of the second frame 2 when the vehicle is folded.

[0102] The aforementioned limiting protrusion 5211 can extend along an arc and be adapted to the shape and size of the limiting groove 221 to improve guiding stability. Alternatively, the limiting protrusion 5211 can also be cylindrical.

[0103] In other embodiments, the aforementioned limiting groove 221 may be provided on the sleeve portion 521, and the aforementioned limiting protrusion 5211 may be provided on the rotating connection portion 22 of the second frame 2.

[0104] Alternatively, the aforementioned limiting protrusion 5211 can be provided on one of the second frame 2 and the push rod 51, and the aforementioned limiting groove 221 can be provided on the other, as long as the second frame 2 can be limited.

[0105] In some embodiments, when the folding bracket is in the unfolded state, the limiting protrusion 5211 abuts against the inner wall of one end of the limiting groove 221, thereby preventing the second frame 2 from tipping over to one side in this state. See also Figure 12 and Figure 13 At this time, the folding bracket is in the unfolded state, and the limiting protrusion 5211 on the mounting part 52 abuts against the inner wall of the right end of the limiting groove 221, thereby restricting the second frame 2 from rotating clockwise. That is, the right end of the second frame 2 cannot rotate downward in this state.

[0106] Figure 9 The diagram shows an exploded view of the second frame 2 and the plate 10. Each of the two rotating connecting parts 22 is provided with a plate mounting part 222. The two sides of the plate 10 are detachably connected to the two plate mounting parts 222 respectively, facilitating cleaning of the plate 10. For example, each end of the plate 10 is provided with a plate hanging part 110, and the plate hanging part 110 is provided with a hook groove 120. The plate mounting part 222 protrudes from the rotating connecting part 22. The plate 10 is installed from top to bottom, so that the hook groove 120 hooks and connects with the corresponding plate mounting part 222, making installation convenient and quick.

[0107] In some embodiments, the vehicle also includes a canopy assembly that can be mounted over the second frame 2 to provide sunshade and protection. The canopy assembly is detachably attached to the second frame 2 for easier use.

[0108] For example, the canopy assembly includes a canopy rod that is detachably connected to the second frame 2. For instance, the canopy rod is detachably connected to the swivel connection 22 or to the half-frame 211.

[0109] Taking the detachable connection between the canopy rod and the rotating connecting part 22 as an example, the rotating connecting part 22 is provided with a canopy mounting part 223, and the canopy rod is detachably connected to the canopy mounting part 223. Exemplarily, the canopy mounting part 223 is a groove provided on the rotating connecting part 22, and the canopy rod is inserted into the groove. Furthermore, the canopy rod and the groove wall are engaged by a snap-fit ​​structure, ensuring a stable connection while also making disassembly and assembly more convenient.

[0110] See Figure 2 When the vehicle is in the deployed state, the first link 3 and the push rod body 51 are collinear, and the mounting part 52 and the second link 4 are collinear. The first frame 1, the first link 3, the push rod body 51, the mounting part 52 and the second link 4 form a triangular structure, which improves the stability of the four-bar linkage during the movement of the vehicle and keeps the vehicle stably in the deployed state.

[0111] In some embodiments, if the mounting component 52 is not provided, the second frame 2 is directly rotatably connected to the push rod body 51, and the second connecting rod 4 is also directly rotatably connected to the push rod body 51. In this case, the first frame 1, the first connecting rod 3, the push rod body 51, and the second connecting rod 4 form a triangular structure.

[0112] Furthermore, the vehicle also includes a locking mechanism, which locks the vehicle in the deployed state to prevent accidental folding. The locking mechanism can lock the first link 3 and the push rod 5, or lock the second link 4 and the push rod 5, to stabilize the vehicle in the deployed state. Exemplarily, the locking mechanism can be located at the pivot connection between the first link 3 and the fixing rod 511.

[0113] See Figure 1 The vehicle also includes a frame unlocking component 50, which is linked to the aforementioned locking mechanism. The vehicle can be unlocked by the frame unlocking component 50, allowing it to smoothly switch from an unfolded state to a folded state.

[0114] In some embodiments, the frame unlocking member 50 is slidably mounted on the push rod 5. Sliding the frame unlocking member 50 unlocks the locking mechanism, allowing the vehicle to fold and facilitating operation. For example, Figure 1 Unlocking can be achieved by sliding the frame unlocking component 50 upwards. In other embodiments, the frame unlocking component 50 may also be located in other parts, such as on the first link 3 or the second link 4.

[0115] Continue reading Figure 2 When the vehicle is in the deployed state, the angles between the push rod 51 and the first frame 1, as well as the angle between the second link 4 and the first frame 1, are all acute angles. The angle between the first link 3 and the first frame 1 is also acute. This arrangement ensures a certain distance between the bottom ends of the first link 3 and the second link 4, dispersing the stress points on the first frame 1 and improving the stress performance of the four-bar linkage. Furthermore, the second link 4 provides a certain supporting force to the push rod 5 to resist vertical loads.

[0116] Optionally, when the vehicle is in the unfolded state, the mounting member 52 and the push rod 51 are approximately perpendicular to each other, making it easier to fold and retract the four-bar linkage when the push rod 51 is pressed down.

[0117] For example, when the vehicle is in the deployed state, the angle between the push rod 51 (or the first connecting rod 3) and the first frame 1 is 30° to 45°, for example 38°; the angle between the second connecting rod 4 and the first frame 1 is 45° to 60°, for example 54°; and the angle between the mounting member 52 and the push rod 51 is 85° to 95°, for example 88°.

[0118] Optionally, see Figure 2 and Figure 3 A first support rod 7 and a second support rod 8 are spaced apart on the side of the first frame 1 facing the second frame 2. Both the first support rod 7 and the second support rod 8 are inclined relative to the first frame 1, and they are inclined towards each other. The end of the first connecting rod 3 furthest from the push rod 5 is rotatably connected to the first support rod 7, and the end of the second connecting rod 4 furthest from the mounting component 52 is rotatably connected to the second support rod 8. The arrangement of the first support rod 7 and the second support rod 8 provides a mounting base for the first connecting rod 3 and the second connecting rod 4, making installation easier and ensuring flatness after the connection between the rods. See also Figure 1 and Figure 2 When the vehicle is in the deployed state, the first support rod 7 and the first connecting rod 3 are collinear, and the second support rod 8 and the second connecting rod 4 are collinear. The first frame 1, the first support rod 7, the first connecting rod 3, the push rod 5, the second connecting rod 4, and the second support rod 8 are connected together to form a triangular structure.

[0119] See Figure 2 , Figure 3 , Figure 4 as well as Figure 5 When the vehicle switches from the unfolded state to the folded state, the push rod 51 is pressed down, causing it to swing around the rotation center of the mounting member 52 relative to the second frame 2. Specifically, the front end of the push rod 51 swings upwards, and the rear end swings downwards. During this swing, the push rod 51 drives the mounting member 52 to move synchronously. The mounting member 52 and the second connecting rod 4 move from a collinear state to an angled state, and the mounting member 52 rotates and moves closer to the second connecting rod 4, applying downward pressure to the second connecting rod 4, causing it to rotate downwards. Driven by the mounting member 52, the second connecting rod 4 rotates towards the first connecting rod 3 and gradually approaches the first frame 1. Driven by the front end of the push rod 51, the first connecting rod 3 is no longer collinear with the push rod 51, but rotates away from the second connecting rod 4 and gradually approaches the first frame 1. Under the traction of the first link 3 and the second link 4, the push rod 51 moves closer to the first link 3 and the push rod 51 moves closer to the second link 4, eventually moving closer to the first frame 1, thus completing the folding of the vehicle.

[0120] See Figure 5 and Figure 6 When the vehicle is in the folded state, the push rod 51, the second connecting rod 4, and the first frame 1 are parallel to each other. The second connecting rod 4 is parallel to the push rod 51 and the first frame 1. Since the push rod 51 and the second connecting rod 4 are both parallel to the first frame 1, they occupy less space in the vertical direction, which can reduce the thickness of the entire vehicle after folding. The vehicle is flat after folding, which is convenient for storage and placement.

[0121] Meanwhile, in the folded state of the vehicle, preferably, the first connecting rod 3, the push rod body 51 and the first frame 1 are parallel to each other, and the first connecting rod 3 is parallelly sandwiched between the push rod body 51 and the first frame 1, so that the space occupied by the first connecting rod 3 after folding is minimized, and the thickness of the entire vehicle after folding is reduced to the greatest extent.

[0122] In some other embodiments, since the specific structures of the first frame 1 and the four-bar linkage are different, the first link 3 and / or the second link 4 and the push rod 51, and the first link 3 and / or the second link 4 and the first frame 1 can also form a small acute angle, such as less than 10°. After folding, the vertical space occupied is also smaller, which can reduce the overall thickness of the vehicle after folding.

[0123] To ensure a smooth and aesthetically pleasing connection between the members, see, for example, [example not provided]. Figure 14 The first support rod 7 has a first groove 71 recessed on its upper surface, and the first connecting rod 3 has a second groove 31 recessed at one end. The first support rod 7 and the first connecting rod 3 are fitted together through the first groove 71 and the second groove 31, and are rotatably connected by a pivot, so that the thickness of the connection between the first support rod 7 and the first connecting rod 3 is consistent with the thickness of the two rods themselves. The other end of the first connecting rod 3 is provided with a first pivot connection part 32, and the push rod body 51 is provided with a second pivot connection part 513. The first pivot connection part 32 and the second pivot connection part 513 are rotatably connected. The rotatable connection between the second connecting rod 4 and the second support rod 8, the rotatable connection between the second connecting rod 4 and the mounting part 52, and the connection between the mounting part 52 and the second frame 2 can refer to the above connection method, and will not be repeated here.

[0124] See Figure 1 Two wheels 30 are installed at each end of the vehicle to ensure the stability of the vehicle when it moves.

[0125] The front end of the first frame 1 is equipped with a towing component 20. The towing component 20 can be used to tow the vehicle from the front end, so that the vehicle can be pushed as a trolley or towed as a trailer, making it highly versatile.

[0126] In some embodiments, the towing component 20 includes a mounting frame 210 and a telescopic rod 220 retractably disposed within the mounting frame 210. The mounting frame 210 is connected to the front end of the first frame 1. The telescopic rod 220 is provided with one or more telescopic joints, and can be pulled out from the mounting frame 210 to form a pull rod, enabling towing at the front end of the vehicle. Furthermore, the end of the telescopic rod 220 is rotatably engaged with the mounting frame 210 for easy traction.

[0127] In some embodiments, the towing component 20 is fixedly disposed at the front end of the first frame 1, exemplarily a T-shaped rod structure, which can be used to fix the traction rope, and the vehicle can be towed at the front end by means of the traction rope.

[0128] In some embodiments, the towing component 20 is a connecting rod disposed at the front end of the first frame 1. This connecting rod can be used to tow a vehicle or connected to a tool such as a bicycle for towing. Exemplarily, multiple connecting rods are provided, rotatably connected sequentially to each other and rotatably connected to the front end of the first frame 1. These multiple connecting rods can be folded and stored at the front end of the first frame 1. When towing is required, the connecting rods are unfolded to achieve towing.

[0129] Optionally, one or more support beams 40 are connected inside the first frame 1 to improve the support strength of the first frame 1 and prevent it from being overloaded and deformed.

[0130] Example 2

[0131] Based on the same inventive concept as Embodiment 1, this embodiment provides a vehicle, which differs from Embodiment 1 in that:

[0132] The limiting structure includes a damping element located between the frame body 21 and the folding bracket. The damping element can be a spring, sheet metal, elastic column, buffer, damper, etc., but is not limited to the listed structures, as long as it can be adaptively compressed under pressure.

[0133] The damping component can be set between the second frame 2 and the push rod 51, between the second frame 2 and the mounting component 52, or between the second frame 2 and the second connecting rod 4. It can be set according to the specific design requirements, and there is no limitation here.

[0134] In some implementations, the damping element between the two can be compressed and deformed, so as not to interfere with the mutual approach and folding of the second frame 2 and the folding bracket, while providing a certain degree of support for the second frame 2. For example, damping elements are provided between the first link 3 and the second frame 2, and / or between the second link 4 and the second frame 2. When the vehicle is folded, the second frame 2 approaches and folds closer to the first link 3 and the second link 4, thereby compressing the damping element between the first link 3 and the second frame 2 and / or the damping element between the second link 4 and the second frame 2. The damping element neither interferes with the mutual approach and folding of the second frame 2 and the folding bracket, but also provides a certain degree of support for the second frame 2, preventing the second frame 2 from overturning at a large angle, avoiding the tipping of the second frame 2 and components such as the tray 10 and the canopy assembly connected to the second frame 2, and improving the stability and safety of the vehicle in the unfolded state and during the folding process.

[0135] In other embodiments, the damping element is not compressed or deformed when the folding bracket is folded. Exemplarily, a damping element is provided on the mounting member 52, which is, for example, an arched, upwardly extending spring, i.e., the end of the spring away from the mounting member 52 gradually approaches the second frame 2. See also Figure 2 , Figure 3 as well as Figure 4 In the orientation of the bracket, when the folding bracket is in the unfolded state, the upward-extending spring can prevent the right end of the second frame 2 from flipping downward. When the folding bracket changes from the unfolded state to the folded state, the mounting part 52 moves the spring away from the second frame 2, but the spring can still limit the right end of the second frame 2 from flipping downward at a large angle.

[0136] Taking a spring as an example with damping components, see Figure 2 A spring guide cylinder can be fixedly connected to the fixed rod 511 of the push rod body 51. One end of the spring is fixed inside the spring guide cylinder and can extend and retract along the spring guide cylinder. When the vehicle is folded, the lower end of the second frame 2 can press down on the spring, so that the spring is gradually compressed into the spring guide cylinder until the folding is completed. The spring can be compressed by the second frame 2 during the folding process of the vehicle, without interfering with the second frame 2 moving closer to the folding bracket and closing. At the same time, the spring can also support the second frame 2 and prevent the second frame 2 from deflecting at a large angle.

[0137] The number of damping components can be set to one or more, with "multiple" meaning two or more.

[0138] For example, at least two damping elements are respectively disposed on both sides of the rotating connection 22, so as to limit the second frame 2 from deflecting a large angle clockwise relative to the first frame 1, and also to limit the second frame 2 from deflecting a large angle counterclockwise relative to the first frame 1.

[0139] In some embodiments, damping elements are provided between the second frame 2 and the push rod 51, and between the second frame 2 and the mounting member 52. Alternatively, damping elements are provided between the second frame 2 and the push rod 51, and between the second frame 2 and the second connecting rod 4. This arrangement prevents the second frame 2 from deflecting to both sides at large angles, which helps to further improve the stability of the vehicle in the unfolded state and during the folding process.

[0140] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A vehicle, characterized in that, include: First frame; The second frame is spaced apart from the first frame; A folding bracket is connected to the first frame and the second frame. The folding bracket has a folded state and an unfolded state. When the folding bracket switches from the unfolded state to the folded state, it can drive the second frame to move closer to the first frame. A limiting structure is provided on at least one of the second frame and the folding bracket, the limiting structure being used to limit the rotation angle of the second frame relative to the first frame to be less than or equal to an angle threshold.

2. The vehicle according to claim 1, characterized in that, The folding bracket is rotatably connected to the second frame; The limiting structure includes a guide part and a sliding part. One of the guide part and the sliding part is disposed on the second frame, and the other is disposed on the folding bracket. The sliding part can slide with the guide part within a preset angle range.

3. The vehicle according to claim 2, characterized in that, The guide portion includes a limiting groove, and the sliding portion includes a limiting protrusion. The limiting protrusion is engaged in the limiting groove and slidably cooperates with the limiting groove. The limiting groove extends in an arc shape.

4. The vehicle according to claim 3, characterized in that, When the folding bracket is in the unfolded state, the limiting protrusion abuts against the inner wall of one end of the limiting groove.

5. The vehicle according to claim 1, characterized in that, The second frame includes a frame body and a rotating connection portion disposed on the frame body. The rotating connection portion is rotatably connected to the folding bracket. The limiting structure includes a damping element. The damping element is located between the frame body and the folding bracket.

6. The vehicle according to claim 5, characterized in that, The damping element is provided in one form; or, the damping element is provided in at least two forms, with the at least two damping elements respectively disposed on both sides of the rotating connection.

7. The vehicle according to claim 1, characterized in that, The carrier also includes a connector that connects the first frame and the second frame. When the folding bracket is in the unfolded state, the connector is tensioned between the first frame and the second frame. When the folding bracket is in the folded state, the connector is relaxed.

8. The vehicle according to claim 7, characterized in that, The connector includes a sleeve that surrounds the first frame and the second frame circumferentially; Alternatively, the connector may include a plurality of traction parts, each of which is connected between the first frame and the second frame, and the plurality of traction parts are spaced apart along the circumference of the first frame; Alternatively, the connector may include multiple traction parts, with at least one traction part on each side of the folding bracket, connecting between the first frame and the second frame.

9. The vehicle according to any one of claims 1-8, characterized in that, The folding bracket includes a first link, a second link, and a push rod; The push rod is connected to the first frame via the first connecting rod, and the second connecting rod is connected to both the push rod and the first frame. The first frame, the first connecting rod, the second connecting rod, and the push rod constitute a four-bar linkage mechanism. The second frame is connected to either the push rod or the second connecting rod. The first connecting rod, the second connecting rod, and the push rod can move towards the first frame and drive the second frame towards the first frame, so that the folding bracket switches from the unfolded state to the folded state; The limiting structure is provided between the second frame and the push rod; and / or, the limiting structure is provided between the second frame and the second connecting rod; When the folding bracket is in the unfolded state, the second frame is parallel to the first frame; And / or, the vehicle further includes a tray and / or a canopy assembly, the tray and / or the canopy assembly being connected to the second frame.

10. The vehicle according to claim 9, characterized in that, When the folding bracket is in the unfolded state, the first connecting rod and the push rod are collinear, and the first frame, the first connecting rod, the push rod and the second connecting rod form a triangular structure; And / or, when the folding bracket is in the unfolded state, the angle between the push rod and the first frame, and the angle between the second connecting rod and the first frame are both acute angles; And / or, when the folding bracket is in the folded state, the push rod, the second connecting rod, and the first frame are parallel to each other; And / or, when the folding bracket is in the folded state, the push rod, the first connecting rod, and the first frame are parallel to each other.

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