Foldable trolley

Abstract

The foldable trolley comprises a foldable trolley frame and a seat pocket assembly, the trolley frame comprises two front legs which are spaced from each other and two rear legs which are spaced from each other, the lower ends of the front legs are connected with front wheels, the lower ends of the rear legs are connected with rear wheels, and the front legs and the rear legs on the same side intersect with each other and are connected in a hinged mode. The upper ends of the front legs are rotatably connected with hand push rods, the seat pocket assembly comprises an upper frame, the front side of the upper frame is rotatably connected with the upper ends of the rear legs, the rear side of the upper frame is rotatably connected with the lower portions of the hand push rods, and the upper frame is connected with a flexible seat pocket. When the foldable trolley moves from the unfolding position to the folding position, the connecting position of the hand push rod and the front legs and the rear end of the upper frame are close to the lower ends of the rear legs, and the connecting position of the upper frame and the rear legs and the upper end of the hand push rod are close to the lower ends of the front legs. The folding chair is simple in structure, low in cost and convenient and fast to fold.

Description

[Technical field]

[0001] The utility model relates to a trolley. [Background technology]

[0002] Strollers are common products in daily life, including baby strollers, pet strollers, etc., and current strollers are generally foldable or unfoldable. In the unfolded state, they are used to push babies or pets, and in the folded state, they are easy to carry or store.

[0003] Chinese patent announcement number (CN220884429U) discloses a pet-carrying stroller, when the frame needs to be folded, the push rod is pushed, and the push rod rotates relative to the support rod around the third axis, and when the push rod moves, the connecting rod is pushed to move, and the connecting rod rotates relative to the push rod and the rear legs and moves closer to the rear legs, and the support rod rotates relative to the support rod around the second axis and moves closer to the rear legs, and when the support rod rotates and moves closer to the rear legs, it drives the support frame to move, and the front end of the support frame rotates relative to the support rod around the fourth axis, and the rear end of the support frame moves and drives the linkage assembly to move so that the front legs move closer to the rear legs, thereby realizing the folding of the frame. However, the frame structure is relatively complex, with many connecting rods and rods, and the cost is relatively high. In addition, when the pet stroller is folded, the pet basket needs to be removed from the frame first, and the folding operation of the pet stroller is not very convenient and quick.

[0004] Therefore, the present invention is just produced based on the above shortcomings. [Contents of the utility model]

[0005] The utility model aims to overcome the deficiencies of the prior art and to provide a foldable trolley which has a simple structure, low cost and convenient and quick folding operation.

[0006] The utility model is realized by the following technical solutions:

[0007] A foldable trolley can be moved from an unfolded position to a folded position after a locking device is unlocked. It includes a foldable frame and a seat bag assembly, the frame including two front legs and two rear legs spaced apart from each other, the lower ends of the front legs are connected to the front wheels, the lower ends of the rear legs are connected to the rear wheels, the front legs and the rear legs on the same side are crossed and hingedly connected to each other, the upper ends of the front legs are rotatably connected to a push rod, and the seat bag assembly includes an upper frame, the front side of the upper frame is rotatably connected to the upper ends of the rear legs, the rear side of the upper frame is rotatably connected to the lower part of the push rod, and a flexible seat bag is connected to the upper frame. When the foldable trolley moves from the unfolded position to the folded position, the connection position of the push rod with the front legs and the rear end of the upper frame approach the lower ends of the rear legs, and the connection position of the upper frame with the rear legs and the upper end of the push rod approach the lower ends of the front legs.

[0008] The locking device is arranged between the push rod and the front leg.

[0009] The upper frame is connected to a ceiling assembly that can rotate relative to the upper frame, and the ceiling assembly includes a first shelf rod and a second shelf rod rotatably connected to the upper frame. The upper frame is also rotatably connected to multiple ceiling support rods, and a shelf cloth is connected to the first shelf rod, the second shelf rod and the ceiling support rods. A locking mechanism is provided between the first shelf rod and the front end of the upper frame and between the second shelf rod and the rear end of the upper frame. When the first shelf rod rotates backward relative to the upper frame, a first opening for infants or pets to enter and exit is formed between the first shelf rod and the front end of the upper frame. When the second shelf rod rotates forward relative to the upper frame, a second opening for infants or pets to enter and exit is formed between the second shelf rod and the rear end of the upper frame.

[0010] The locking mechanism includes a connecting seat connected to the front and rear ends of the upper frame, the first and second shelf rods are connected with plug tongues that can be plugged into the corresponding connecting seats, the plug tongues are provided with locking positions, the connecting seat is connected with an operating member that can slide relative to it, the operating member is provided with a locking part that can follow its movement and be engaged or disengaged from the locking position, and an elastic member that can keep the locking part in a locked state is provided between the operating member and the connecting seat.

[0011] The locking position is a locking hole, and the locking portion is a locking block arranged on the operating member.

[0012] The lower end of the inserting tongue is provided with a first inclined sliding surface, and the locking portion is provided with a second inclined sliding surface. When the inserting tongue is inserted into the connecting seat, the first inclined sliding surface pushes the second inclined sliding surface so that the operating member slides relative to the connecting seat, and when the elastic member is reset, the locking portion on the operating member is inserted into the locking position on the inserting tongue so that the inserting tongue and the connecting seat are locked with each other.

[0013] The connecting seat is provided with a snap-in socket which can be snap-connected to the upper frame.

[0014] The inserting tongue is also provided with a connecting portion which can be connected with the first shelf pole and the second shelf pole.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. When the foldable stroller of the utility model needs to be folded, the locking device is first unlocked, and then the push rod is pushed forward and pressed down. During this process, the push rod and the upper ends of the front legs rotate relative to each other, the front legs and the rear legs rotate relative to each other at the crossed position, the upper frame and the rear legs rotate relative to each other, and the upper frame and the push rod rotate relative to each other, so that the connection position between the push rod and the front legs and the rear end of the upper frame are close to the lower end of the rear legs, and the connection position between the upper frame and the rear legs and the upper end of the push rod are close to the lower end of the front legs, thereby realizing the folding of the foldable stroller. During this process, the flexible seat pocket is also folded up. The entire foldable stroller has a simple structure, few connecting rods, and low cost. In addition, there is no need to disassemble the seat pocket assembly when folding. The folding operation is convenient and quick. It can be used as a baby stroller or a pet stroller with various functions.

[0017] 2. The upper frame of the utility model is also connected to a ceiling assembly, and a locking structure is provided between the first and second shed rods and the upper frame to lock the position of the ceiling, which can play a role in sunshade and windproof. The connecting seat is connected to the upper frame, and the plug tongue is connected to the first and second shed rods. When the seat pocket assembly needs to be opened, the operating member is pressed, and the operating member slides relative to the connecting seat after being pressed. When the operating member slides relative to the connecting seat, the locking part on it follows the action of the operating member and disengages from the locking position on the plug tongue. At this time, the locking mechanism is unlocked, and the ceiling assembly can be opened to put in or take out pets or babies. To unlock the locking mechanism, it only needs to press the operating member. When the locking mechanism is locked, the ceiling assembly is locked and cannot be opened, and children or pets are safer when riding in the seat pocket assembly.

Brief Description of the Drawings

[0018] Figure 1 It is a side view of the utility model;

[0019] Figure 2 It is a side view of the components of the utility model;

[0020] Figure 3 It is a three-dimensional diagram of the components of the utility model;

[0021] Figure 4 It is a side view of the components of the utility model during the folding process;

[0022] Figure 5 It is a side view of the folded state of the components of the utility model;

[0023] Figure 6 It is one of the three-dimensional diagrams of the seat pocket assembly of the utility model;

[0024] Figure 7 It is a side view of the seat pocket assembly of the utility model;

[0025] Figure 8 This is the second stereoscopic view of the seat pocket assembly of the utility model;

[0026] Fig. 9 This is the third stereogram of the seat bag assembly of the utility model

[0027] Fig.10 It is a three-dimensional diagram of the locking mechanism of the utility model;

[0028] Fig.11 It is one of the three-dimensional diagrams of the components of the locking mechanism of the utility model;

[0029] Fig.12 This is the second stereoscopic view of the components of the locking mechanism of the utility model;

[0030] Fig.13 is a cross-sectional view of the locking mechanism of the utility model;

[0031] Fig.14 This is a third stereogram of the components of the locking mechanism of the utility model;

[0032] Fig.15 This is the fourth stereoscopic view of the components of the locking mechanism of the present invention. [Specific implementation method]

[0033] The utility model is further described below in conjunction with the accompanying drawings:

[0034] like Figures 1 to 7As shown, a foldable trolley can be moved from an unfolded position to a folded position after a locking device is unlocked, comprising a foldable frame 1 and a seat assembly 2, wherein the frame 1 comprises two front legs 11 spaced apart from each other and two rear legs 12 spaced apart from each other, the lower ends of the front legs 11 are connected to front wheels 13, the lower ends of the rear legs 12 are connected to rear wheels 14, the front legs 11 and the rear legs 12 on the same side are crossed and hingedly connected to each other, the upper ends of the front legs 11 are rotatably connected to a push rod 15, and the seat assembly 2 comprises a plurality of foldable trolleys, wherein the foldable trolleys are provided with ... The upper frame 21 includes a front side rotatably connected to the upper end of the rear leg 12, a rear side rotatably connected to the lower part of the push rod 15, and a flexible seat pocket 22 is connected to the upper frame 21. When the foldable trolley moves from the unfolded position to the folded position, the connection position between the push rod 15 and the front leg 11 and the rear end of the upper frame 21 approach the lower end of the rear leg 12, and the connection position between the upper frame 21 and the rear leg 12 and the upper end of the push rod 15 approach the lower end of the front leg 11. When folding is required, the locking device is first unlocked, and then the push rod 15 is pushed forward and pressed down. During this process, the push rod 15 rotates relative to the upper end of the front leg 11, the front leg 11 and the rear leg 12 rotate relative to each other at the mutually crossed position, the upper frame 21 rotates relative to the rear leg 12, and the upper frame 21 rotates relative to the push rod 15, so that the position where the push rod 15 connects with the front leg 11 and the rear end of the upper frame 21 approach the lower end of the rear leg 12, and the position where the upper frame 21 connects with the rear leg 12 and the upper end of the push rod 15 approach the lower end of the front leg 12, thereby realizing the folding of the foldable stroller. During this process, the flexible seat pocket 22 is also folded up. The entire foldable stroller has a simple structure, few connecting rods, and low cost. Moreover, when folding, the seat pocket assembly 2 does not need to be disassembled. The folding operation is convenient and quick, and it can be used as a baby stroller or a pet stroller. The seat pocket 22 in this embodiment can be made of woven fabric, and a hard plate can be set at the bottom of the seat pocket 22 to provide support performance. Moreover, in the present embodiment, the locking device is arranged between the push rod 15 and the front leg 11. The locking device can adopt a conventional plug-in structure of a socket and a latch. For example, a socket is arranged at the upper end of the front leg 11, and a slidable latch that can engage with or disengage from the socket is arranged in the push rod 15. The specific structure thereof will not be described in detail here.

[0035] like Figure 1 , Figure 3 as well as Figures 6 to 9As shown, the upper frame 21 is connected to a ceiling assembly 23 that can rotate relative to the upper frame 21, and the ceiling assembly 23 includes a first shelf rod 231 and a second shelf rod 232 that are rotatably connected to the upper frame 21. The upper frame 21 is also rotatably connected to multiple ceiling support rods 233, and a shed cloth 234 is connected to the first shelf rod 231, the second shelf rod 232 and the ceiling support rods 233. A locking mechanism 24 is provided between the first shelf rod 231 and the front end of the upper frame 21 and between the second shelf rod 232 and the rear end of the upper frame 21, and when the first shelf rod 231 rotates backward relative to the upper frame 21, a first opening 200 for infants or pets to enter and exit is formed between the first shelf rod 231 and the front end of the upper frame 21, and when the second shelf rod 232 rotates forward relative to the upper frame 21, a second opening 201 for infants or pets to enter and exit is formed between the second shelf rod 232 and the rear end of the upper frame 21. Two front and rear openings can be formed between the upper frame 21 and the canopy assembly 23. When the locking mechanism 24 located at the front side of the upper frame 21 is unlocked, the first canopy assembly 231 can rotate backward relative to the upper frame 21 to open the first opening 200, and the adult can put the infant or pet into the seat pocket 22, or take the infant or pet out of the seat pocket 22. When the locking mechanism 24 located at the rear side of the upper frame 21 is unlocked, the second canopy assembly 232 can rotate forward relative to the upper frame 21 to open the second opening 201. The adult can observe the infant or pet in the seat pocket 21 during the pushing process, which is convenient for the adult to take care of it and more convenient to use. Moreover, when the first canopy assembly 231 and the second canopy assembly 232 are locked on the upper frame 21 at the same time, the canopy assembly 23 also plays the role of sunshade and windproof, and also makes the infant or pet safer.

[0036] The locking mechanism 24 includes a connecting seat 241 connected to the front and rear ends of the upper frame 21, and the first shelf rod 231 and the second shelf rod 232 are connected with a tongue 242 that can be plugged into the corresponding connecting seat 241. The tongue 242 is provided with a locking position 243, and the connecting seat 241 is connected with an operating member 244 that can slide relative to it. The operating member 244 is provided with a locking portion 245 that can follow its movement and be engaged or disengaged from the locking position 243. An elastic member 246 is provided between the operating member 244 and the connecting seat 241, which can keep the locking portion 245 in a locked state. When the seat pocket assembly 2 needs to be opened, the operating member 244 is pressed, and the operating member 244 slides relative to the connecting seat 241. When the operating member 244 slides relative to the connecting seat 241, the locking portion 245 on the operating member 244 follows the operation of the operating member 244 and disengages from the locking position 243 on the plug tongue 242. At this time, the locking mechanism 24 is unlocked, and the roof assembly 23 can be opened to put in or take out a pet or baby. To unlock the locking mechanism 24, only the operating member 244 needs to be pressed. When the locking mechanism 24 is locked, the roof assembly 23 is locked and cannot be opened, and it is safer for children or pets to ride in the seat pocket assembly.

[0037] like Figures 11 to 15 As shown, the locking position 243 is a locking hole, and the locking portion 245 is a locking block provided on the operating member 244 .

[0038] like Figures 11 to 15 As shown, the lower end of the inserting tongue 242 is provided with a first inclined sliding surface 2421, and the locking portion 245 is provided with a second inclined sliding surface 2451. When the inserting tongue 242 is inserted into the connecting seat 241, the first inclined sliding surface 2421 pushes the second inclined sliding surface 2451 to make the operating member 244 slide relative to the connecting seat 241, and when the elastic member 246 is reset, the locking portion 245 on the operating member 244 is inserted into the locking position 243 on the inserting tongue 242 to lock the inserting tongue 242 and the connecting seat 241 with each other. When the tongue 242 is pressed down and inserted into the connection seat 241, the first inclined sliding surface 2421 on the tongue 242 pushes the second inclined sliding surface 2451 on the locking portion 245, and the operating member 244 slides relative to the connection seat 241 under the pushing of the tongue 242, and the operating member 244 compresses the elastic member 246. When the locking portion 245 on the operating member 244 is aligned with the locking position 243 on the tongue 242, the elastic member 244 resets and pushes the operating member 244 to slide in the opposite direction relative to the connection seat 241, and the locking portion 245 is again inserted into the tongue 242, and the tongue 242 and the connection seat 241 are locked. Therefore, when the first opening 200 or the second opening 201 needs to be closed, the locking can be completed by pressing the first shelf rod 231 or the second shelf rod 232 downward, and the operation is convenient and quick.

[0039] like Fig.11 and Fig.12 As shown, the connecting seat 241 is provided with a bayonet 2411 that can be snapped onto the upper frame 21, so that the connecting seat 241 can be quickly installed on the upper frame 21 and then fixed by a screw assembly.

[0040] like Figures 13 to 15 As shown, the inserting tongue 242 is further provided with a connecting portion 2422 that can be connected to the first shelf rod 231 and the second shelf rod 232, so that the inserting tongue 242 can be installed on the first shelf rod 231 and the second shelf rod 232 by screws or the like.

[0041] The embodiment is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiment, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the present purpose.

Claims

1. A foldable trolley that can be moved from an unfolded position to a folded position after a locking device is unlocked, characterized in that: The invention comprises a foldable frame (1) and a seat assembly (2), wherein the frame (1) comprises two mutually spaced front legs (11) and two mutually spaced rear legs (12), the lower ends of the front legs (11) are connected to front wheels (13), the lower ends of the rear legs (12) are connected to rear wheels (14), the front legs (11) and rear legs (12) on the same side are mutually crossed and hingedly connected, the upper ends of the front legs (11) are rotatably connected to a push rod (15), and the seat assembly (2) comprises an upper frame (21), the upper frame (21 ) is rotatably connected to the upper end of the rear leg (12), the rear side of the upper frame (21) is rotatably connected to the lower part of the push rod (15), and a flexible seat pocket (22) is connected to the upper frame (21). When the foldable trolley moves from the unfolded position to the folded position, the connection position between the push rod (15) and the front leg (11) and the rear end of the upper frame (21) approach the lower end of the rear leg (12), and the connection position between the upper frame (21) and the rear leg (12) and the upper end of the push rod (15) approach the lower end of the front leg (11).

2. The foldable trolley according to claim 1, characterized in that: The locking device is arranged between the push rod (15) and the front leg (11).

3. The foldable trolley according to claim 1 or 2, characterized in that: The upper frame (21) is connected to a ceiling assembly (23) that can rotate relative to the upper frame (21), and the ceiling assembly (23) includes a first shelf rod (231) and a second shelf rod (232) that are rotatably connected to the upper frame (21). The upper frame (21) is also rotatably connected to a plurality of ceiling support rods (233), and the first shelf rod (231), the second shelf rod (232) and the ceiling support rods (233) are connected to a shed cloth (234). There is a gap between the first shelf rod (231) and the front end of the upper frame (21) and between the first shelf rod (231) and the front end of the upper frame (21). A locking mechanism (24) is provided between the second shelf rod (232) and the rear end of the upper frame (21), and when the first shelf rod (231) rotates backward relative to the upper frame (21), a first opening (200) is formed between the first shelf rod (231) and the front end of the upper frame (21) for infants or pets to enter and exit; and when the second shelf rod (232) rotates forward relative to the upper frame (21), a second opening (201) is formed between the second shelf rod (232) and the rear end of the upper frame (21) for infants or pets to enter and exit.

4. The foldable trolley according to claim 3, characterized in that: The locking mechanism (24) comprises a connecting seat (241) connected to the front and rear ends of the upper frame (21); the first shelf rod (231) and the second shelf rod (232) are connected with plug tongues (242) which can be plugged into the corresponding connecting seat (241); the plug tongues (242) are provided with a locking position (243); the connecting seat (241) is connected with an operating member (244) which can slide relative to it; the operating member (244) is provided with a locking portion (245) which can follow the movement of the operating member and be engaged in or disengaged from the locking position (243); an elastic member (246) is provided between the operating member (244) and the connecting seat (241) so as to keep the locking portion (245) in a locked state.

5. The foldable trolley according to claim 4, characterized in that: The locking position (243) is a locking hole, and the locking portion (245) is a locking block provided on the operating member (244).

6. The foldable trolley according to claim 4, characterized in that: The lower end of the inserting tongue (242) is provided with a first inclined sliding surface (2421), and the locking portion (245) is provided with a second inclined sliding surface (2451). When the inserting tongue (242) is inserted into the connecting seat (241), the first inclined sliding surface (2421) pushes the second inclined sliding surface (2451) so that the operating member (244) slides relative to the connecting seat (241), and when the elastic member (246) is reset, the locking portion (245) on the operating member (244) is inserted into the locking position (243) on the inserting tongue (242) so that the inserting tongue (242) and the connecting seat (241) are locked with each other.

7. The foldable trolley according to claim 4, characterized in that: The connecting seat (241) is provided with a snap-on socket (2411) that can be snap-connected to the upper frame (21).

8. The foldable trolley according to claim 4, characterized in that: The inserting tongue (242) is also provided with a connecting portion (2422) capable of connecting with the first shelf rod (231) and the second shelf rod (232).

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