Baby stroller with a canopy and its collapsible frame

Abstract

The present invention discloses a baby stroller with a canopy and its collapsible frame. The collapsible frame includes a frame body and wheels. The frame body has a switchable deployed state and a folded standing state. The collapsible frame further includes a folding and standing mechanism connected to the frame body. The folding and standing mechanism includes a front vertical rod and a rear vertical rod. The first end of the front vertical rod is rotatably connected to the first end of the front footrest, the first end of the rear vertical rod is rotatably connected to the first end of the rear footrest, and the second end of the rear vertical rod is rotatably connected to the second end of the front vertical rod. In the folded standing state, the folding and standing mechanism cooperates with the rear wheels to stand and makes the armrest frame suspended. Such a collapsible frame stands firmly in the folded standing state, avoiding the armrest frame from touching the ground, which can reduce the dirt on the armrest frame and improve the cleanliness and convenience of use.

Description

Technical Field

[0001] The present invention relates to the field of baby strollers, and particularly to a collapsible frame and a children's stroller with such a collapsible frame and a canopy. Background Art

[0002] When a general children's stroller is folded in a short time, it is very difficult for the folded stroller to stand upright on the ground. Usually, people choose to lay it down or lean it against a corner. When the area for laying it down is insufficient or the space at the corner is limited, the stroller is rather in the way and is inevitably soiled.

[0003] In the prior art, there is a solution that enables the children's stroller to stand stably by using the armrest and wheels when the stroller is in the folded state. However, the armrest in this solution is inevitably soiled. In daily life, when using a children's stroller, it is necessary to frequently unfold and fold the stroller. If the armrest needs to be cleaned every time the stroller is unfolded, it is very inconvenient to use. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a collapsible frame that can stand when folded and can keep the armrest as clean as possible when folded.

[0005] The present invention also aims to provide a children's stroller with the above-mentioned collapsible frame.

[0006] According to an embodiment of the present invention, the collapsible frame includes a frame main body and wheels. The frame main body has a switchable unfolded state and a folded standing state. The frame main body includes an armrest frame, a front foot frame, a rear foot frame, and a linkage frame. In the unfolded state, the first end of the front foot frame is located below the front side of the second end of the front foot frame. The first end of the armrest frame is rotatably connected to the second end of the front foot frame. The first end of the rear foot frame is located below the rear side of the second end of the rear foot frame. The rear foot frame is located behind the front foot frame. The second end of the rear foot frame is rotatably connected to the armrest frame. The linkage frame is respectively rotatably connected to the front foot frame and the rear foot frame. In the folded standing state, the second end of the armrest frame, the first end of the front foot frame, and the first end of the rear foot frame are closed together. The wheels include a front wheel disposed at the first end of the front foot frame and a rear wheel disposed at the first end of the rear foot frame.

[0007] In the folded standing state, the distance from the second end of the armrest frame to the rotation axis of the connection between the armrest frame and the front foot frame is a first distance, and the distance from the rear wheel to the rotation axis of the connection between the armrest frame and the front foot frame is a second distance. The first distance is less than the second distance.

[0008] The collapsible frame further includes a folding and standing mechanism connected to the frame body. The folding and standing mechanism includes a front vertical rod and a rear vertical rod. The first end of the front vertical rod is rotatably connected to the first end of the front footrest, the first end of the rear vertical rod is rotatably connected to the first end of the rear footrest, and the second end of the rear vertical rod is rotatably connected to the second end of the front vertical rod.

[0009] When the collapsible frame is folded, the front vertical rod and the rear vertical rod rotate relative to each other and fold, and the connection ends of the two move away from the rotation axis of the connection between the armrest frame and the front footrest; when the collapsible frame is folded to the folded and standing state, the connection ends of the front vertical rod and the rear vertical rod and the second end of the armrest frame are respectively located on the front and rear sides of the rear footrest, and the distance from the connection ends of the front vertical rod and the rear vertical rod to the rotation axis of the connection between the armrest frame and the front footrest is greater than the first distance; the connection ends of the front vertical rod and the rear vertical rod and the two rear wheels form a triangular support to keep the collapsible frame in a standing state.

[0010] According to the collapsible frame of the embodiment of the present invention, by providing a collapsible and expandable frame body, the collapsible frame can be expanded when in use and can be turned into a folded and standing state when not in use. Such a collapsible frame can stand firmly in the folded and standing state by using the folding and standing mechanism in cooperation with the rear wheels. The collapsible frame does not need to lie down or lean against the corner, and the folding is very convenient. Moreover, by using the folding and standing mechanism, the collapsible frame can stand stably in the folded and standing state, and the armrest frame does not need to touch the ground, which can reduce the dirt on the armrest frame and improve the use cleanliness and convenience.

[0011] Among them, by using the front vertical rod and the rear vertical rod, in the folded and standing state, the first end of the front vertical rod is connected to the front footrest, the first end of the rear vertical rod is connected to the rear footrest, and the folded frame body, the front vertical rod and the rear vertical rod are generally in a triangular structure, so that the included angle between the front vertical rod and the rear vertical rod is kept stable. Thus, the connection ends of the front vertical rod and the rear vertical rod cooperate with the two rear wheels to stably support the ground and keep the collapsible frame standing steadily.

[0012] In some embodiments, at least one of the first end of the rear vertical rod and the first end of the front vertical rod is detachably connected to the frame body. The frame body has a storage state, and in the storage state, the first end of the detachable rear vertical rod or the first end of the front vertical rod is detached from the frame body. Thereby, it is beneficial to reduce the occupied volume of the collapsible frame in the storage state and reduce the space required for storage.

[0013] In some embodiments, the rear footrest includes: two rear footrest side rods and a rear footrest cross bar connected between the two rear footrest side rods. A sleeve is provided at the first end of the rear vertical rod, the sleeve has a notch, and the sleeve is detachably clamped on the rear footrest cross bar through the notch. This eliminates the need to drill holes in the rear footrest cross bar for connecting the rear vertical rod, ensuring the structural strength of the rear footrest. Moreover, the disassembly and assembly of the rear vertical rod and the rear footrest cross bar are very easy and efficient, without the need for additional parts to complete the clamping, and there is no need to worry about the loss of parts.

[0014] In some embodiments, the sleeve is a circular tube, a pressing block is provided on the inner wall of the sleeve, a thinning hole is provided on the outer wall of the sleeve, and the central angle of the notch is greater than 30 degrees and less than 120 degrees. By using the setting of the thinning hole and the constraint of the central angle of the notch, it is convenient for the sleeve to undergo plastic deformation, facilitating the insertion and withdrawal of the rear footrest cross bar. By using the setting of the pressing block, the probability of the rear footrest cross bar shaking relative to the sleeve is reduced, which is beneficial to further improving the reliability of the connection.

[0015] In some embodiments, two connecting split plates are formed at the second end of the rear vertical rod, the second end of the front vertical rod is connected between the two connecting split plates, and the second end of the rear vertical rod is used to support the ground in the folded standing state. Thereby, the ground contact support stability can be improved.

[0016] The baby stroller with a canopy according to an embodiment of the present invention includes the collapsible frame described in the above embodiment. The baby stroller with a canopy further includes: a fixed seat and a canopy support assembly. The fixed seat is connected to the frame body, and the canopy support assembly includes a canopy adjustment seat, and the canopy adjustment seat is rotatably connected to the fixed seat.

[0017] The baby stroller with a canopy according to an embodiment of the present invention, by providing the above collapsible frame, enables the collapsible frame to stand firmly in the folded standing state, and the armrest does not need to touch the ground, which can reduce the dirt on the armrest and improve the use cleanliness and convenience. The canopy can be retracted and extended by using the rotatability of the canopy adjustment seat.

[0018] In some embodiments, the baby stroller with a canopy further includes an angle limiting structure. The angle limiting structure includes at least two limiting grooves provided on one of the fixed seat and the canopy adjustment seat, the at least two limiting grooves are distributed around the rotation axis of the canopy adjustment seat, and the angle limiting structure further includes a limiting block provided on the other of the fixed seat and the canopy adjustment seat. The limiting block can be selectively engaged with any one of the at least two limiting grooves. Such a setting enables the canopy adjustment seat to be limited at at least two angular positions, and the canopy adjustment seat can be switched and adjusted between the at least two angular positions, improving the use convenience and preventing the canopy from changing randomly due to the free rotation of the canopy adjustment seat.

[0019] In some embodiments, there are a plurality of the limiting grooves uniformly spaced apart, and a plurality of the limiting blocks uniformly spaced apart. The central angle formed by two adjacent limiting grooves is equal to the central angle formed by two adjacent limiting blocks.

[0020] In some embodiments, the angle limiting structure further includes: a shaft column, with the limiting blocks located radially outside the shaft column; a circular ring tube sleeved radially outside the shaft column, and the limiting blocks are located inside the circular ring tube; a circular ring platform having a shaft hole, with the limiting grooves formed on the circular ring platform and distributed around the shaft hole. The circular ring platform is inserted into the circular ring tube, and the shaft column is inserted into the shaft hole. Thereby, the coaxiality of the relative rotation between the fixed seat and the canopy adjusting seat is ensured, and external impurities are not easily introduced, reducing the probability of wear and rotational blockage caused by the entry of impurities.

[0021] In some embodiments, the angle limiting structure further includes: a ring groove formed on the radial outside of the circular ring tube; a stop block located in the ring groove and fixed relative to the circular ring tube; a abutting block fixed relative to the circular ring platform, with the abutting block fitted in the ring groove, and when the canopy adjusting seat rotates relative to the fixed seat to the limit position, the abutting block abuts against the stop block. Thereby, the adjustment range of the canopy can be limited.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0024] Figure 1 is a perspective view of the collapsible frame according to an embodiment of the present invention in the deployed state;

[0025] Figure 2 is a front view of the collapsible frame according to an embodiment of the present invention in the folded and standing state;

[0026] Figure 3 is a rear view of the collapsible frame according to an embodiment of the present invention in the folded and standing state;

[0027] Figure 4 is a front view of the collapsible frame according to an embodiment of the present invention in the stored state (the cup holder and wheels are both removed);

[0028] Figure 5 is a rear view of the collapsible frame according to an embodiment of the present invention in the stored state (the cup holder and wheels are both removed);

[0029] Figure 6 It is a partial view of the folding and standing mechanism according to an embodiment of the present invention in the deployed state;

[0030] Figure 7 It is a partial exploded view of the fixed seat and the awning support assembly at the connection according to an embodiment of the present invention;

[0031] Figure 8 It is a structural diagram of the fixed seat according to an embodiment of the present invention;

[0032] Figure 9 It is a structural diagram of the awning adjustment seat according to an embodiment of the present invention.

[0033] Reference numerals:

[0034] Collapsible frame 100,

[0035] Frame body 10, armrest frame 1, armrest side rod 11, armrest cross rod 12, front foot frame 2, front foot side rod 21, front foot cross rod 22, rear foot frame 3, rear foot side rod 31, rear foot cross rod 32, linkage frame 4, linkage side rod 41, linkage cross rod 42,

[0036] Folding and standing mechanism 20, front vertical rod 5, rear vertical rod 6, sleeve 61, notch 611, pressing block 612, thinning hole 613, connecting sub-plate 62, rod end arc surface 63, lowest surface S,

[0037] Wheels 40, front wheel 401, rear wheel 402,

[0038] Locking assembly 60, connecting seat 61, cup plate 50,

[0039] Angle limiting structure 70, limiting groove 71, limiting block 72, shaft column 73, circular ring tube 74, circular ring platform 75, shaft hole 76, ring groove 77, stop block 78, abutting block 79,

[0040] Fixed seat 80,

[0041] Awning support assembly 90, awning adjustment seat 91, awning connecting rod 92, Detailed implementation manners

[0042] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where 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 are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0043] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The following refers to the Figures 1-6 description of the collapsible frame 100 according to an embodiment of the present invention.

[0046] The collapsible frame 100 according to an embodiment of the present invention includes a frame main body 10 and wheels 40. The wheels 40 are connected to the frame main body 10 for walking. As Figures 1-3 shown, the frame main body 10 has a switchable deployed state and a folded standing state. Figure 1 is a perspective view of the collapsible frame 100 in the deployed state. Figure 2 is a front view of the collapsible frame in the folded standing state. Figure 3 is a rear view of the collapsible frame in the folded standing state.

[0047] In some embodiments, the frame main body 10 may further have a storage state, and the frame main body 10 can be switched between the deployed state, the folded standing state, and the storage state. Figure 4 is a front view of the collapsible frame in the storage state. Figure 5 is a rear view of the collapsible frame in the storage state.

[0048] As Figures 1-5As shown, the frame body 10 includes: an armrest frame 1, a front footrest frame 2, a rear footrest frame 3, and a linkage frame 4. The frame body 10 constitutes a four-bar linkage mechanism. If the armrest frame 1, the front footrest frame 2, the rear footrest frame 3, and the linkage frame 4 are corresponding to the four links in the four-bar linkage mechanism, each link has two ends. For the convenience of description, the two ends of each link are respectively referred to as the first end and the second end. Corresponding to the frame body 10 of the present application, the armrest frame 1 has a first end 1a and a second end 1b of the armrest frame 1, the front footrest frame 2 has a first end 2a and a second end 2b of the front footrest frame 2, the rear footrest frame 3 has a first end 3a and a second end 3b of the rear footrest frame 3, and the linkage frame 4 has a first end 4a and a second end 4b of the linkage frame 4. It should be noted that although the armrest frame 1, the front footrest frame 2, the rear footrest frame 3, and the linkage frame 4 are corresponding to the four links in the four-bar linkage mechanism, the shapes of the armrest frame 1, the front footrest frame 2, the rear footrest frame 3, and the linkage frame 4 are not limited to rod shapes. The shape of each frame can be a rod shape, a frame shape, etc.

[0049] For example, in some specific embodiments, such as Figure 1 As shown, the armrest frame 1 includes two armrest side bars 11 and at least one armrest cross bar 12. The armrest cross bar 12 is connected between the two armrest side bars 11. In Figure 1 a specific example, the armrest frame 1 can be generally U-shaped. The armrest frame 1 includes an armrest cross bar 12 and two armrest side bars 11. The armrest cross bar 12 and the armrest side bars 11 are generally straight bars, and the two are connected by an arc transition. The second end 1b of the armrest frame 1 is located on the armrest cross bar 12, and the first end 1a of the armrest frame 1 is located at one end of the two armrest side bars 11 away from the armrest cross bar 12. Of course, the shape of the armrest frame 1 in the present application is not limited to Figure 1 the shape shown.

[0050] For example, in some specific embodiments, such as Figure 1 As shown, the front footrest frame 2 includes two front footrest side bars 21 and at least one front footrest cross bar 22. The front footrest cross bar 22 is connected between the two front footrest side bars 21. In Figure 1 a specific example, the front footrest frame 2 can be generally U-shaped. The front footrest frame 2 includes a front footrest cross bar 22 and two front footrest side bars 21. The front footrest cross bar 22 is an arc-shaped bar. The first end 2a of the front footrest frame 2 is located on the front footrest cross bar 22, and the second end 2b of the front footrest frame 2 is located at one end of the two front footrest side bars 21 away from the front footrest cross bar 22. Of course, the shape of the rear footrest frame 3 in the present application is not limited to Figure 1 the shape shown.

[0051] For example, in some specific embodiments, such as Figure 1 As shown, the rear footrest frame 3 includes two rear footrest side bars 31 and at least one rear footrest cross bar 32. The rear footrest cross bar 32 is connected between the two rear footrest side bars 31. In Figure 1In a specific example, the rear leg frame 3 can be generally U-shaped. The rear leg frame 3 includes a rear leg cross bar 32 and two rear leg side bars 31. The rear leg cross bar 32 and the rear leg side bars 31 are generally straight bars. The first end 3a of the rear leg frame 3 is located on the rear leg cross bar 32, and the second end 3b of the rear leg frame 3 is located at one end of the two rear leg side bars 31 that is far from the rear leg cross bar 32. Of course, in this application, the shape of the rear leg frame 3 is not limited to Figure 1 the shape shown.

[0052] For example, in some specific embodiments, as Figure 1 shown, the linkage frame 4 includes two linkage side bars 41 and at least one linkage cross bar 42. The linkage cross bar 42 is connected between the two linkage side bars 41. In Figure 1 a specific example, the linkage frame 4 can be generally U-shaped. The linkage frame 4 includes a linkage cross bar 42 and two linkage side bars 41. The linkage cross bar 42 and the linkage side bars 41 are generally straight bars and are connected by an arc transition. The second end 4b of the linkage frame 4 is located on the linkage cross bar 42, and the first end 4a of the linkage frame 4 is located at one end of the two linkage side bars 41 that is far from the linkage cross bar 42. Of course, in this application, the shape of the linkage frame 4 is not limited to Figure 1 the shape shown.

[0053] In the solution of this application, as Figure 1 shown, in the unfolded state, the first end 2a of the front leg frame 2 is located below and in front of the second end 2b of the front leg frame 2. The first end 1a of the armrest frame 1 is rotatably connected to the second end 2b of the front leg frame 2. The first end 3a of the rear leg frame 3 is located below and behind the second end 3b of the rear leg frame 3. The rear leg frame 3 is located behind the front leg frame 2. The second end 3b of the rear leg frame 3 is rotatably connected to the armrest frame 1. The linkage frame 4 is respectively rotatably connected to the front leg frame 2 and the rear leg frame 3. Describing the structure of the vehicle frame body 10 in the unfolded state, the lower end of the armrest frame 1 is rotatably connected to the upper end of the front leg frame 2. The rear leg frame 3 is located behind the front leg frame 2 and the upper end is rotatably connected to the armrest frame 1. The linkage frame 4 is respectively pivotally connected to the front leg frame 2 and the rear leg frame 3.

[0054] In this application, as Figure 2 and Figure 3 shown, in the folded standing state, the second end 1b of the armrest frame 1, the first end 2a of the front leg frame 2, and the first end 3a of the rear leg frame 3 are closed together. Figure 2 In the solution, in the folded standing state, the second end 4b of the linkage frame 4 also closes towards the first end 3a of the rear leg frame 3.

[0055] It can be understood that, as Figure 1As shown, the collapsible frame 100 further includes a locking assembly 60, which is connected between any two adjacent linkages of the above four-link mechanism. Optionally, the locking assembly 60 is connected at the connection between the armrest frame 1 and the front leg frame 2. The locking assembly 60 can adopt the structure of the locking assembly known in the prior art, which will not be elaborated here.

[0056] The locking assembly 60 is switchable between a locked state and an unlocked state. When the frame body 10 is in the unfolded state and the locking assembly 60 is in the locked state, the locking assembly 60 fixes the angles of the two adjacent linkages. At this time, the four-link mechanism is transformed into a triangular link mechanism, and the frame body 10 remains stable in the unfolded state. When the locking assembly 60 is switched from the locked state to the unlocked state, the locking assembly 60 releases the above two adjacent linkages. At this time, the angles of the four-link mechanism are not limited, the four-link mechanism can be deformed, and the vehicle body 10 can be folded and switched from the unfolded state to the folded standing state. In some solutions, the collapsible frame 100 further has a storage state. When the locking assembly 60 is switched to the unlocked state, the collapsible frame 100 can continue to be folded to reach the storage state.

[0057] Specifically, as Figure 1 shown, the wheels 40 include a front wheel 401 disposed at the first end 2a of the front leg frame 2 and a rear wheel 402 disposed at the first end 3a of the rear leg frame 3.

[0058] Specifically, as Figure 1 shown, the collapsible frame 100 further includes a folding and standing mechanism 20 connected to the frame body 10. The folding and standing mechanism 20 includes a front vertical rod 5 and a rear vertical rod 6. The first end 5a of the front vertical rod 5 is rotatably connected to the first end 2a of the front leg frame 2, the first end 6a of the rear vertical rod 6 is rotatably connected to the first end 3a of the rear leg frame 3, and the second end 6b of the rear vertical rod 6 is rotatably connected to the second end 5b of the front vertical rod 5.

[0059] As Figure 1 and Figure 6 shown, in the unfolded state, the front vertical rod 5 is connected to the front side of the rear vertical rod 6. Since the distance between the first end 2a of the front leg frame 2 and the first end 3a of the rear leg frame 3 is far in the unfolded state, the entire folding and standing mechanism 20 is opened. The folding and standing mechanism 20 is connected between the first end 2a of the front leg frame 2 and the first end 3a of the rear leg frame 3, which can improve the overall structural stiffness of the frame body 10. Moreover, when a structure such as a storage basket is connected to the frame body 10, the unfolded folding and standing mechanism 20 has a supporting and protecting effect on structures such as the storage basket.

[0060] As Figure 2 and Figure 3As shown, when in the folded standing state, the included angle between the front vertical rod 5 and the rear vertical rod 6 decreases. Here, it means that the included angle between the front vertical rod 5 and the rear vertical rod 6 in the folded standing state is smaller than that in the unfolded state. When in the folded standing state, the folding standing mechanism 20 is generally in a V shape.

[0061] In the solution of the present application, as Figure 3 shown, when in the folded standing state, the distance from the second end 1b of the armrest frame 1 to the rotation connection axis L1 between the armrest frame 1 and the front foot frame 2 is the first distance m1, and the distance from the rear wheel 402 to the rotation connection axis L1 between the armrest frame 1 and the front foot frame 2 is the second distance m2, and the first distance m1 is less than the second distance m2.

[0062] Moreover, from Figure 1 and Figure 2 comparison, it can be seen that when the collapsible vehicle frame 100 is folded, the front vertical rod 5 and the rear vertical rod 6 rotate and fold relative to each other, that is, the first end 5a of the front vertical rod 5 approaches the first end 6a of the rear vertical rod 6. The connection ends of the front vertical rod 5 and the rear vertical rod 6 move in a direction away from the rotation connection axis L1 between the armrest frame 1 and the front foot frame 2. Specifically, the distance from the connection ends of the front vertical rod 5 and the rear vertical rod 6 to the rotation connection axis L1 between the armrest frame 1 and the front foot frame 2 is the third distance m3. When the collapsible vehicle frame 100 is folded, the distance from this connection end to the rotation connection axis L1 between the armrest frame 1 and the front foot frame 2 increases, that is, the third distance m3 increases during folding.

[0063] When the collapsible vehicle frame 100 is folded to the folded standing state, the connection ends of the front vertical rod 5 and the rear vertical rod 6 and the second end 1b of the armrest frame 1 are respectively on the front and rear sides of the rear foot frame 3, and the distance from the connection ends of the front vertical rod 5 and the rear vertical rod 6 to the rotation connection axis L1 between the armrest frame 1 and the front foot frame 2 (that is, the third distance m3 in the folded standing state) is greater than the first distance m1.

[0064] And, the connection ends of the front vertical rod 5 and the rear vertical rod 6 and the two rear wheels 402 are distributed in a triangle, which can support the collapsible vehicle frame 100 to maintain the standing state.

[0065] That is to say, when the collapsible vehicle frame 100 is folded to the folded standing state, the connection ends of the front vertical rod 5 and the rear vertical rod 6 and the two rear wheels 402 touch the ground and stand, and the plane where the three are located is the lowest plane S of the collapsible vehicle frame 100.

[0066] When in the folded standing state, the first distance m1 from the second end 1b of the armrest frame 1 to the rotation connection axis L1 between the armrest frame 1 and the front foot frame 2 is less than the second distance m2 from the rear wheel 402 to the rotation connection axis L1 between the armrest frame 1 and the front foot frame 2, and is less than the third distance m3 from the connection ends of the front vertical rod 5 and the rear vertical rod 6 to the rotation connection axis L1 between the armrest frame 1 and the front foot frame 2. Therefore, the armrest frame 1 is higher than the lowest plane S when in the folded standing state. As Figure 2In [description], the second end 1b of the armrest frame 1 is higher than the lowest surface S, so that the entire armrest frame 1 will not touch the ground in the folded and standing state.

[0067] For the collapsible vehicle frame 100 according to an embodiment of the present invention, by providing a collapsible vehicle frame main body 10, the collapsible vehicle frame 100 can be unfolded during use and can be converted into a folded and standing state when not in use. Such a collapsible vehicle frame 100 can stand firmly in the folded and standing state by using the folding and standing mechanism 20 in cooperation with two rear wheels 402. The collapsible vehicle frame 100 does not need to lie down or lean against a corner, and the folding is very convenient. Moreover, by using the folding and standing mechanism 20, the collapsible vehicle frame 100 can stand stably in the folded and standing state, and the folding and standing mechanism 20 cooperates with two rear wheels 402 to support the armrest frame 1 off the ground, avoiding the armrest frame 1 from touching the ground, which can reduce the dirt on the armrest frame 1 and improve the use cleanliness and convenience.

[0068] Among them, by using the front vertical rod 5 and the rear vertical rod 6, the first end 5b of the front vertical rod 5 is connected to the front leg frame 2a, and the first end 6a of the rear vertical rod 6 is connected to the rear leg frame 3. In the folded and standing state, the folded vehicle frame main body 10 and the front vertical rod 5 and the rear vertical rod 6 are generally in a triangular structure, so that the included angle between the front vertical rod 5 and the rear vertical rod 6 is kept stable. Thus, the connecting ends of the front vertical rod 5 and the rear vertical rod 6 cooperate with two rear wheels 402 to stably support the ground and keep the collapsible vehicle frame 100 standing steadily.

[0069] In some embodiments, at least one of the first end 6a of the rear vertical rod 6 and the first end 5a of the front vertical rod 5 is detachably connected to the vehicle frame main body 10. The vehicle frame main body 10 has a storage state. In the storage state, the first end 6a of the detachable rear vertical rod 6 or the first end 5a of the front vertical rod 5 is detached from the vehicle frame main body 10, so as to further reduce the folded volume of the collapsible vehicle frame 100.

[0070] It can be understood that in the folded and standing state, the folded vehicle frame main body 10 and the front vertical rod 5 and the rear vertical rod 6 are generally in a triangular structure, so that the shapes of the vehicle frame main body 10 and the folding and standing mechanism 20 are both kept stable. By detaching one end of the folding and standing mechanism 20 from the vehicle frame main body 10, the vehicle frame main body 10 can be further folded, and the included angle between the front vertical rod 5 and the rear vertical rod 6 on the folding and standing mechanism 20 can be further reduced. Finally, at the limit, the vehicle frame main body 10 can be minimized, which is beneficial to reducing the occupied volume of the collapsible vehicle frame 100 in the storage state and reducing the storage space required.

[0071] In Figure 4 and Figure 5 example, the first end 6a of the rear vertical rod 6 can be detached from the first end 6a of the rear vertical rod 6, while the first end 5a of the front vertical rod 5 cannot be detached from the first end 2a of the front leg frame 2.

[0072] Of course, the solution of the present application is not limited to this. In some solutions, the first end 5a of the front vertical rod 5 can be detached from the first end 2a of the front footrest 2, and it is not necessary to detach the first end 6a of the rear vertical rod 6 from the first end 6a of the rear vertical rod 6. In still other embodiments, both the first end 6a of the rear vertical rod 6 and the first end 5a of the front vertical rod 5 can be detached from the vehicle frame main body 10. In some embodiments, the second end 5b of the front vertical rod 5 and the second end 6b of the rear vertical rod 6 can even be disassembled. All these solutions can prevent the folding and standing mechanism 20 from restricting the vehicle frame main body 10, enabling the vehicle frame main body 10 to be folded into the smallest size.

[0073] In some embodiments, as Figure 1 shown, the baby stroller further includes a cup holder 50 connected to the armrest 1, and the cup holder 50 is detachably connected to the armrest 1. When the collapsible vehicle frame 100 is in the folded and standing state, as Figure 3 shown, although the vehicle frame main body 10 is folded, it has not been folded to the smallest size yet, and the cup holder 50 is still connected to the armrest 1. In this way, it is not necessary to reinstall the cup holder 50 after the collapsible vehicle frame 100 is unfolded. As Figure 5 shown, when the collapsible vehicle frame 100 is in the storage state, the cup holder 50 is detached from the armrest 1, and the armrest 1 will not prevent the further folding of the vehicle frame main body 10 and the folding and standing mechanism 20.

[0074] In some embodiments, as Figure 1 shown, the wheels 40 are detachably connected to the vehicle frame main body 10. When the collapsible vehicle frame 100 is in the folded and standing state, as Figure 3 shown, although the vehicle frame main body 10 is folded, it has not been folded to the smallest size yet, and the wheels 40 are still connected to the vehicle frame main body 10. In this way, it is not necessary to reinstall the wheels 40 after the collapsible vehicle frame 100 is unfolded, and the wheels 40 can also be used to construct the lowest surface S. As Figure 5 shown, when the collapsible vehicle frame 100 is in the storage state, the wheels 40 are detached from the vehicle frame main body 10, and the wheels 40 will not prevent the further folding of the vehicle frame main body 10 and the folding and standing mechanism 20.

[0075] In some embodiments, as Figure 1 and Figure 6As shown in the figure, the rear tripod 3 includes: two rear side rods 31 and a rear cross bar 32 connected between the two rear side rods 31. A sleeve 61 is provided at the first end 6a of the rear vertical rod 6. The sleeve 61 has a notch 611. The sleeve 61 is detachably clamped on the rear cross bar 32 through the notch 611. In this way, by utilizing the plastic deformation ability of the sleeve 61, after the rear cross bar 32 is squeezed into the sleeve 61 from the notch 611, the sleeve 61 can return to its original shape and sleeve the rear cross bar 32. When disassembling, the rear cross bar 32 can be extruded out of the sleeve 61 from the notch 611. This enables the rear cross bar 32 not to need to be drilled for connecting the rear vertical rod 6, ensuring the structural strength of the rear tripod 3. Moreover, the disassembly and assembly of the rear vertical rod 6 and the rear cross bar 32 are very easy and efficient, without the need for additional parts to complete the clamping, and there is no need to worry about the problem of part loss.

[0076] Specifically, the sleeve 61 is a circular tube, and the width of the notch 611 is smaller than the diameter of the rear cross bar 32. In this way, the relatively narrow notch 611 of the sleeve 61 can limit the rear cross bar 32.

[0077] Optionally, the central angle of the notch 611 is greater than 30 degrees and less than 120 degrees. The notch 611 is not too wide to cause the rear cross bar 32 to easily slip out, and the notch 611 is not too narrow to cause the rear cross bar 32 to be too difficult to be clamped in.

[0078] Furthermore, as Figure 5 shown, a pressing block 612 is provided on the inner wall of the sleeve 61. The setting of the pressing block 612 on the inner wall of the sleeve 61 can squeeze the rear cross bar 32 inside the sleeve 61, reducing the probability of the rear cross bar 32 shaking relative to the sleeve 61, which is beneficial to further improving the connection reliability.

[0079] More specifically, as Figure 5 shown, a thinning hole 613 is provided on the outer wall of the sleeve 61, that is, the local outer wall of the sleeve 61 is thinned, facilitating the plastic deformation of the sleeve 61 and making it convenient for the rear cross bar 32 to be clamped in and retracted.

[0080] In some embodiments, as Figure 1 shown, the wheel 40 includes a front wheel 401 provided at the first end 2a of the front tripod 2 and a rear wheel 402 provided at the first end 3a of the rear tripod 3. In the folded standing state, the bottoms of the two rear wheels 402 and the second end 6b of the rear vertical rod 6 construct the lowest surface S, forming a three-legged state, further ensuring the stability of the collapsible frame 100 in the folded standing state.

[0081] Specifically, as Figure 6 shown, two connecting plates 62 are formed at the second end 6b of the rear vertical rod 6, and the second end 5b of the front vertical rod 5 is connected between the two connecting plates 62. In the folded standing state, the second end 6b of the rear vertical rod 6 is located on the lowest surface S.

[0082] The provision of the two connecting sub-boards 62 facilitates clamping and connecting the second end 5b of the front vertical rod 5, thus facilitating connection and fixation. Moreover, the rear vertical rod 6 includes two connecting sub-boards 62 at the second end 6b. In the folded standing state, the two connecting sub-boards 62 abut against the ground. In this way, the rear vertical rod 6 can contact the ground at at least two points. When the two rear wheels 402 and the second end 6b of the rear vertical rod 6 touch the ground to form a tripod, the supporting effect of the leg where the rear vertical rod 6 is located is enhanced by the two connecting sub-boards 62, making it more compatible with the supporting capabilities of the two rear wheels 402 and improving the ground contact support stability.

[0083] Specifically, the rear vertical rod 6 forms a rod end arc surface 63 at the second end 6b. In the folded standing state, the front vertical rod 5 touches the ground using the rod end arc surface 63. This can improve the buffering ability when the rear vertical rod 6 touches the ground and also reduce the wear of the ground on the rear vertical rod 6.

[0084] The following describes a baby stroller with a canopy according to an embodiment of the present invention with reference to the accompanying drawings.

[0085] As Figure 7 shown, the baby stroller with a canopy further includes: a fixed seat 80 and a canopy support assembly 90. The fixed seat 80 is connected to the frame main body 10, and the canopy support assembly 90 includes a canopy adjustment seat 91 which is rotatably connected to the fixed seat 80. Here, the canopy support assembly 90 is used to support the canopy (not shown in the figure), and the canopy can be retracted and deployed by the rotation of the canopy adjustment seat 91.

[0086] Here, the fixed seat 80 can be directly connected to the frame main body 10, or the fixed seat 80 can be indirectly connected to the frame main body 10. For example Figure 1 in, a connection seat 61 is connected to the locking assembly 60, and the fixed seat 80 can be detachably installed on the connection seat 61.

[0087] Specifically, the canopy support assembly 90 further includes a canopy connecting rod 92. The front side edge of the canopy can be fixed to the canopy connecting rod 92, and the rear side edge of the canopy can be fixed to the frame main body 10 or the seat (not shown in the figure). In this way, when the canopy connecting rod 92 rotates, it drives the front side edge of the canopy to unfold forward or fold backward.

[0088] Specifically, as Figures 7-9As shown in the figure, the baby stroller with a canopy further includes an angle limiting structure 70. The angle limiting structure 70 includes at least two limiting grooves 71 provided on one of the fixed seat 80 and the canopy adjusting seat 91. The at least two limiting grooves 71 are distributed around the rotation axis of the canopy adjusting seat 91. The angle limiting structure 70 further includes a limiting block 72 provided on the other of the fixed seat 80 and the canopy adjusting seat 91. The limiting block 72 can selectively engage with any one of the at least two limiting grooves 71. Such a setting enables the canopy adjusting seat 91 to be limited at at least two angular positions, and the canopy adjusting seat 91 can be switched and adjusted between the above at least two angular positions, improving the use convenience and preventing the canopy from changing randomly due to the free rotation of the canopy adjusting seat 91.

[0089] Specifically, the limiting grooves 71 are a plurality of evenly spaced ones, and the limiting blocks 72 are a plurality of evenly spaced ones. The central angle formed by two adjacent limiting grooves 71 is equal to the central angle formed by two adjacent limiting blocks 72. In this way, the angular change amplitude of the canopy adjusting seat 91 is the same when switching each gear.

[0090] In Figure 8 and Figure 9 the example of, there are seven limiting grooves 71 and also seven limiting blocks 72, and the canopy can have a maximum of seven adjustment levels.

[0091] In some embodiments, the angle limiting structure 70 further includes: a shaft column 73, a circular ring tube 74 and a circular ring platform 75. The limiting block 72 is located on the radial outer side of the shaft column 73. The circular ring tube 74 is sleeved on the radial outer side of the shaft column 73, and the limiting block 72 is located inside the circular ring tube 74. The circular ring platform 75 has a shaft hole 76. The limiting grooves 71 are formed on the circular ring platform 75 and are distributed around the shaft hole 76. The circular ring platform 75 is inserted into the circular ring tube 74, and the shaft column 73 is inserted into the shaft hole 76.

[0092] Here, the insertion and cooperation between the shaft column 73 and the shaft hole 76, and the insertion and cooperation between the circular ring tube 74 and the circular ring platform 75 ensure the coaxiality of the relative rotation of the fixed seat 80 and the canopy adjusting seat 91, and the rotation is smooth. Moreover, since the circular ring tube 74 sleeves the circular ring platform 75, the mating surface of the limiting grooves 71 and the limiting blocks 72 is sleeved by the circular ring tube 74, and external impurities are not easily introduced, reducing the probability of wear and rotation blockage caused by the entry of impurities.

[0093] Furthermore, the angle limiting structure 70 further includes: an annular groove 77, a stop block 78, and an abutting block 79. The annular groove 77 is formed on the radial outer side of the circular tube 74. The stop block 78 is located in the annular groove 77 and is fixed relative to the circular tube 74. The abutting block 79 is fixed relative to the circular truncated cone 75. The abutting block 79 is fitted in the annular groove 77, and when the top cover adjusting seat 91 rotates relative to the fixed seat 80 to the limit position, the abutting block 79 abuts against the stop block 78. With such a setting, the rotation range of the relative rotation between the fixed seat 80 and the top cover adjusting seat 91 is limited, so that the top cover can be adjusted to expand and contract within a limited range.

[0094] For example, in Figure 9 , there are two abutting blocks 79. The two abutting blocks 79 form an included angle of 160 degrees on the outer end surface in the rotation direction. Due to the setting of the stop block 78 in the annular groove 77, the rotation within a range of 45 degrees is restricted, so that the top cover can be adjusted within a range of 115 degrees.

[0095] In some specific embodiments, when the limiting block 72 is located on the fixed seat 80, one side of the fixed seat 80 is provided with an annular groove 77. The radial inner side of the annular groove 77 is the circular tube 74. The radial inner side of the circular tube 74 is a plurality of limiting blocks 72. The radial inner side of the plurality of limiting blocks 72 is the shaft column 73. Two stop blocks 78 are provided in the annular groove 77 on the fixed seat 80. The top cover adjusting seat 91 is provided with a shaft hole 76. The radial outer side of the shaft hole 76 is a plurality of limiting grooves 71. The limiting grooves 71 are formed on the circular truncated cone 75. The radial outer side of the circular truncated cone 75 is provided with an abutting block 79.

[0096] Of course, in the present application, the positions of the limiting block 72 and the limiting groove 71 can be interchanged. When the limiting groove 71 is located on the fixed seat 80, the limiting block 72 can be located on the top cover adjusting seat 91.

[0097] In the present application, the positions of the shaft column 73 and the shaft hole 76 can be interchanged. When the shaft hole 76 is located on the fixed seat 80, the shaft column 73 can be located on the top cover adjusting seat 91.

[0098] In the present application, the positions of the circular tube 74 and the circular truncated cone 75 can be interchanged. When the fixed seat 80 is provided with the circular truncated cone 75, the top cover adjusting seat 91 can be provided with the circular tube 74.

[0099] In the present application, the positions of the stop block 78 and the abutting block 79 can be interchanged. When the fixed seat 80 is provided with the abutting block 79, the top cover adjusting seat 91 can be provided with the annular groove 77 and the stop block 78.

[0100] It can be understood that various mating structures on the angle limiting structure 70 can be combined arbitrarily after being interchanged, and any combination method is within the scope of the present application.

[0101] In the description of this specification, the descriptions referring to terms such as "embodiment", "example", etc. mean that the specific features, structures, materials or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0102] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A collapsible frame, the collapsible frame comprising a frame body (10) and wheels (40), the frame body (10) having a switchable deployed state and a folded standing state, the frame body (10) including an armrest frame (1), a front leg frame (2), a rear leg frame (3) and a linkage frame (4); in the deployed state, a first end (2a) of the front leg frame (2) is located below and in front of a second end (2b) of the front leg frame (2), a first end (1a) of the armrest frame (1) is rotatably connected to the second end (2b) of the front leg frame (2), a first end (3a) of the rear leg frame (3) is located below and behind a second end (3b) of the rear leg frame (3), the rear leg frame (3) is located behind the front leg frame (2), a second end (3b) of the rear leg frame (3) is rotatably connected to the armrest frame (1), and the linkage frame (4) is respectively rotatably connected to the front leg frame (2) and the rear leg frame (3); in the folded standing state, a second end (1b) of the armrest frame (1), a first end (2a) of the front leg frame (2) and a first end (3a) of the rear leg frame (3) are brought together, and the wheels (40) include a front wheel (401) provided at the first end (2a) of the front leg frame (2) and a rear wheel (402) provided at the first end (3a) of the rear leg frame (3). Characterized in that, in the folded standing state, a distance from the second end (1b) of the armrest frame (1) to an axis of rotation (L1) between the armrest frame (1) and the front leg frame (2) is a first distance (m1), a distance from the rear wheel (402) to the axis of rotation (L1) between the armrest frame (1) and the front leg frame (2) is a second distance (m2), and the first distance (m1) is less than the second distance (m2); the collapsible frame further includes a folding standing mechanism (20) connected to the frame body (10), the folding standing mechanism (20) including a front vertical rod (5) and a rear vertical rod (6), a first end (5a) of the front vertical rod (5) is rotatably connected to the first end (2a) of the front leg frame (2), a first end (6a) of the rear vertical rod (6) is rotatably connected to the first end (3a) of the rear leg frame (3), and a second end (6b) of the rear vertical rod (6) is rotatably connected to a second end (5b) of the front vertical rod (5). When the collapsible frame is folded, the front vertical rod (5) and the rear vertical rod (6) rotate relative to each other and fold, and the connecting ends of the two move away from the rotation axis (L1) of the connection between the armrest frame (1) and the front foot frame (2); when the collapsible frame is folded to the folded standing state, the connecting ends of the front vertical rod (5) and the rear vertical rod (6) and the second end (1b) of the armrest frame (1) are respectively on the front and rear sides of the rear foot frame (3), and the distance from the connecting ends of the front vertical rod (5) and the rear vertical rod (6) to the rotation axis (L1) of the connection between the armrest frame (1) and the front foot frame (2) is greater than the first distance (m1); the connecting ends of the front vertical rod (5) and the rear vertical rod (6) and the two rear wheels (402) form a triangular support to keep the collapsible frame in a standing state.

2. The collapsible frame according to claim 1, characterized in that at least one of the first end (6a) of the rear vertical rod (6) and the first end (5a) of the front vertical rod (5) is detachably connected to the frame body (10); the frame body (10) has a storage state, and in the storage state, the first end (6a) of the detachably connected rear vertical rod (6) or the first end (5a) of the front vertical rod (5) is detached from the frame body (10).

3. The collapsible frame according to claim 2, characterized in that the rear foot frame (3) includes: two rear foot side rods and a rear foot cross bar connected between the two rear foot side rods, a sleeve (61) is provided at the first end (6a) of the rear vertical rod (6), the sleeve (61) has a notch (611), and the sleeve (61) is detachably clamped on the rear foot cross bar through the notch (611).

4. The collapsible frame according to claim 3, characterized in that the sleeve (61) is a circular tube, a pressing block (612) is provided on the inner wall of the sleeve (61), a thinning hole (613) is provided on the outer wall of the sleeve (61), and the central angle of the notch (611) is greater than 30 degrees and less than 120 degrees.

5. The collapsible frame according to claim 1, characterized in that two connecting split plates (62) are formed at the second end (6b) of the rear vertical rod (6), the second end (5b) of the front vertical rod (5) is connected between the two connecting split plates (62), and the second end (6b) of the rear vertical rod (6) is used to support the ground in the folded standing state.

6. A baby stroller with a canopy, comprising the collapsible frame according to any one of claims 1-5, characterized in that the baby stroller with a canopy further includes a fixed seat (80) and a canopy support assembly (90), the fixed seat (80) is connected to the frame body (10), and the canopy support assembly (90) includes a canopy adjustment seat (91), and the canopy adjustment seat (91) is rotatably connected to the fixed seat (80).

7. The baby stroller with a canopy according to claim 6, characterized in that The baby stroller with a canopy further includes an angle limiting structure (70). The angle limiting structure (70) includes at least two limiting grooves (71) provided on one of the fixed seat (80) and the canopy adjusting seat (91). The at least two limiting grooves (71) are distributed around the rotation axis of the canopy adjusting seat (91). The angle limiting structure (70) further includes a limiting block (72) provided on the other of the fixed seat (80) and the canopy adjusting seat (91). The limiting block (72) can selectively engage with any one of the at least two limiting grooves (71).

8. The baby stroller with a canopy according to claim 7, wherein, the limiting grooves (71) are a plurality of evenly spaced ones, the limiting blocks (72) are a plurality of evenly spaced ones, and the central angle formed by two adjacent limiting grooves (71) is equal to the central angle formed by two adjacent limiting blocks (72).

9. The baby stroller with a canopy according to claim 7, wherein, the angle limiting structure (70) further includes: a shaft column (73), the limiting block (72) is located on the radial outer side of the shaft column (73); a circular ring tube (74), the circular ring tube (74) is sleeved on the radial outer side of the shaft column (73), and the limiting block (72) is located inside the circular ring tube (74); a circular ring platform (75), the circular ring platform (75) has a shaft hole (73), the limiting grooves (71) are formed on the circular ring platform (75) and are distributed around the shaft hole (73), the circular ring platform (75) is inserted into the circular ring tube (74), and the shaft column (73) is inserted into the shaft hole (73).

10. The baby stroller with a canopy according to claim 9, wherein, the angle limiting structure (70) further includes: a ring groove (77), the ring groove (77) is formed on the radial outer side of the circular ring tube (74); a stop block (78), the stop block (78) is located in the ring groove (77) and is fixed relative to the circular ring tube (74); a resisting block (79), the resisting block (79) is fixed relative to the circular ring platform (75), the resisting block (79) is fitted in the ring groove (77), and when the canopy adjusting seat (91) rotates relative to the fixed seat (80) to the limit position, the resisting block (79) abuts against the stop block (78).

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