A foldable child-assisting vehicle

Abstract

The present invention discloses a foldable child-assisting vehicle, comprising a bottom frame, a front wheel assembly, a rear wheel assembly, a seat mechanism capable of moving up and down relative to the bottom frame, a first connecting rod, a push rod, and a second connecting rod; the seat mechanism comprises a seat body, the two ends of the first connecting rod are rotatably connected to the bottom frame and the seat body respectively, and the push rod is rotatably connected to the bottom frame and the seat body respectively; one end of the second connecting rod is rotatably connected to the first connecting rod or the push rod, and the other end is rotatably and slidably connected relative to the bottom frame, and the child-assisting vehicle also includes a locking mechanism for limiting the other end of the second connecting rod from sliding relative to the bottom frame; the child-assisting vehicle of the present invention realizes the function of providing child-assisting support in the unfolded state, and allows children to slide and ride independently in the folded state, which not only enriches the functional diversity of the child vehicle and can adapt to applications in different scenarios, but also has a simple folding method, fewer rods, quick and convenient conversion between the two states, and good safety and stability.

Description

Technical Field

[0001] The present invention belongs to the field of children's products, in particular to a multifunctional children's vehicle, and specifically to a foldable children's vehicle with auxiliary carrying capacity. Background Art

[0002] At present, children's strollers are used more and more frequently in life. Generally, children's strollers can be folded to reduce their size for easy storage. However, many existing models have single functions and cannot adapt well to applications in different scenarios. For example, in areas with poor road conditions, guardians need to lead children for walking. In this case, the children's stroller needs to have an assisted carrying and pushing function to facilitate the children to sit and the guardian to push the stroller. When the children reach a better playing area, they can play on their own. In this case, the children's stroller needs to have a sliding riding function, but many existing models cannot meet the above needs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an improved foldable child-assisted vehicle.

[0004] To solve the above technical problems, the present invention adopts a technical solution as follows: a foldable child-assisted vehicle, comprising a bottom frame, a front wheel assembly provided at the front of the bottom frame, a rear wheel assembly provided at the rear of the bottom frame, a seat mechanism capable of moving up and down relative to the bottom frame, a first connecting rod, a push rod, and a second connecting rod;

[0005] The seat mechanism includes a seat body, the two ends of the first connecting rod are rotatably connected to the bottom frame and the seat body respectively, and the push rod is rotatably connected to the bottom frame and the seat body respectively;

[0006] One end of the second connecting rod is rotatably connected to the first connecting rod or the push rod, and the other end is rotatably and slidably connected relative to the bottom frame. The auxiliary vehicle also includes a locking mechanism for limiting the other end of the second connecting rod from sliding relative to the bottom frame.

[0007] According to the present invention, the assisting vehicle comprises an unfolded state for assisting pushing and a folded state for riding.

[0008] According to some preferred and specific aspects of the present invention, when the assisted-carriage is in an unfolded state for assisted pushing, the second connecting rod extends from rear to front and upward and is used to support and restrict the first connecting rod or the push rod from rotating downward; when the assisted-carriage is in a folded state for riding, the first connecting rod, the push rod and the second connecting rod are close to each other.

[0009] According to some preferred and specific aspects of the present invention, the push rod, the second connecting rod and the bottom frame form a triangle, wherein the angle between the second connecting rod and the bottom frame is an acute angle.

[0010] According to some preferred and specific aspects of the present invention, the first connecting rod and the push rod are arranged parallel to each other, and the rotation connection between the push rod and the bottom frame is located between the rotation connection between the first connecting rod and the bottom frame and the rotation connection between the second connecting rod and the bottom frame.

[0011] According to some preferred and specific aspects of the present invention, the first connecting rod and the push rod extend from front to rear and upward respectively.

[0012] According to some preferred and specific aspects of the present invention, the two ends of the first connecting rod are respectively rotatably connected to the front part of the bottom frame, the front part or the middle part of the seat body, the lower end of the push rod is rotatably connected to the middle part of the bottom frame, the rear part of the seat body is rotatably connected to the push rod, one end of the second connecting rod is rotatably connected to the push rod, and the other end is rotatably and slidably connected relative to the rear part of the bottom frame.

[0013] According to some preferred aspects of the present invention, the auxiliary loading vehicle further includes a sliding sleeve slidably mounted on the bottom frame, the other end of the second connecting rod is rotatably connected to the sliding sleeve, and the locking mechanism is arranged between the sliding sleeve and the bottom frame and is used to limit the sliding of the sliding sleeve relative to the bottom frame.

[0014] According to some specific aspects of the present invention, the locking mechanism includes a card slot arranged on the bottom frame and a lock tongue slidably arranged in the sliding sleeve. The lock tongue and the card slot are detachably matched. When the locking mechanism is locked, the lock tongue is connected to the card slot; when the locking mechanism is unlocked, the lock tongue is disengaged from the card slot.

[0015] According to some specific and preferred aspects of the present invention, the locking mechanism further includes an elastic component that drives the lock tongue to move toward the slot and cooperates therewith, one end of the elastic component abuts against the sliding sleeve, and the other end abuts against the lock tongue.

[0016] According to some specific and preferred aspects of the present invention, the push rod includes a telescopic straight rod and a push rod cross rod connected to the upper end of the telescopic straight rod, the lower end of the telescopic straight rod is rotatably connected to the bottom frame, and the extension direction of the telescopic straight rod is the same as that of the first connecting rod.

[0017] According to some preferred aspects of the present invention, the retractable straight rod includes a first support rod whose lower end is rotatably connected to the bottom frame, a second support rod arranged to slide relative to the first support rod, and a third support rod arranged to slide relative to the second support rod, the upper end of the third support rod is connected to the push rod cross rod, wherein the first support rod, the second support rod and the third support rod have the same extension direction.

[0018] According to some specific and preferred aspects of the present invention, the first support rod and the second support rod respectively have a hollow slide hole, the lower end of the second support rod is inserted into the hollow slide hole of the first support rod and can be relatively slidably arranged, and the lower end of the third support rod is inserted into the hollow slide hole of the second support rod and can be relatively slidably arranged.

[0019] According to some preferred aspects of the present invention, the seat mechanism further includes a seat handle whose lower end is rotatably connected to the seat body, and the lower end of the seat handle is provided with a limiting protrusion for limiting the seat handle from rotating forward and downward from a set position relative to the seat body.

[0020] According to some specific and preferred aspects of the present invention, the angle formed between the seat handle and the seat body is an obtuse angle, which can be greater than 90° and less than 180°, greater than 90° and less than 170°, greater than 90° and less than 160°, greater than 95° and less than 150°, greater than 95° and less than 140°, etc.

[0021] The "set position" in the present invention refers to the fixed position of the seat handle when used by a child. The seat handle can only be rotated from the above-mentioned fixed position toward the direction close to the seat body, and cannot be rotated from the above-mentioned fixed position toward the direction away from the seat body (forward and downward).

[0022] Another technical solution provided by the present invention is a foldable child-assisting vehicle, comprising a bottom frame, a front wheel assembly disposed at the front of the bottom frame, a rear wheel assembly disposed at the rear of the bottom frame, a seat mechanism capable of moving up and down relative to the bottom frame, a first connecting rod, a push rod, and a second connecting rod; wherein the seat mechanism comprises a seat body, and both ends of the first connecting rod are rotatably connected to the bottom frame and the seat body, respectively;

[0023] The push rod is rotatably connected to the bottom frame and the seat body respectively;

[0024] One end of the second connecting rod is rotatably connected to one of the bottom frame and the push rod, and the other end is rotatably and slidably connected to the other. The auxiliary vehicle also includes a locking mechanism for limiting the other end of the second connecting rod from sliding relative to the bottom frame or the push rod.

[0025] Due to the adoption of the above technical solution, the present invention has the following advantages compared with the prior art:

[0026] The present invention uses several specific rods, which cooperate with the seat body and the bottom frame to achieve the function of providing children with auxiliary carrying in the unfolded state, and allowing children to slide and ride independently in the folded state. This not only enriches the functional diversity of the children's car and can adapt to applications in different scenarios, but also has a simple folding method, fewer rods, quick and convenient conversion between the two states, and good safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic diagram of the overall structure of the foldable child-assisted vehicle of the present invention (in the unfolded state for assisting in pushing);

[0029] Figure 2 for Figure 1 A top view of

[0030] Figure 3 for Figure 1 Bottom-up view;

[0031] Figure 4 for Figure 3 The enlarged schematic diagram of the M in the middle;

[0032] Figure 5 for Figure 1 Side view of;

[0033] Figure 6 for Figure 5 The view after retracting the push rod;

[0034] Figure 7 A schematic diagram of the foldable child-assist vehicle of the present invention in a folded state for riding;

[0035] Figure 8 for Figure 7 The schematic diagram of the push rod is further contracted;

[0036] Figure 9 This is a schematic diagram of the foldable child-assisting vehicle of the present invention being completely folded and stowed;

[0037] Figure 10This is a schematic diagram of the coordination relationship between the various components of the locking mechanism of the foldable child-assisted vehicle of the present invention;

[0038] Figure 11 for Figure 10 Enlarged schematic diagram of position N in the middle;

[0039] Figure 12 This is an exploded schematic diagram of some components of the foldable child-assist vehicle of the present invention;

[0040] Among them, 1. bottom frame; 11. support bracket; 12. cross brace; 13. connector; 14. support member; 2. front wheel assembly; 3. rear wheel assembly; 4. seat mechanism; 41. seat body; 42. seat handle; 421. limiting protrusion; 5. first connecting rod; 6. push rod; 61. first support rod; 62. second support rod; 63. third support rod; 64. push rod cross bar; 7. second connecting rod; 8. locking mechanism; 81. slot; 82. lock tongue; 83. elastic component; 9. sliding sleeve. DETAILED DESCRIPTION

[0041] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments of the present invention. In the following embodiments, for ease of description, the left, right, up, down, front, and back directions mentioned in the definitions are all defined with reference to the directions as viewed by a person sitting in the foldable child carrier.

[0042] like Figures 1 to 12 As shown, this embodiment provides a foldable child-assisted vehicle, which includes an unfolded state for assisting pushing and a folded state for riding. The accompanying drawings show a preferred and specific implementation of the present invention, but in actual application it is not limited to this specific structure.

[0043] The assisted-carrying vehicle includes a bottom frame 1, a front wheel assembly 2 arranged at the front of the bottom frame 1, a rear wheel assembly 3 arranged at the rear of the bottom frame 1, a seat mechanism 4 capable of moving up and down relative to the bottom frame 1, a first connecting rod 5, a push rod 6 and a second connecting rod 7; wherein, the seat mechanism 4 includes a seat body 41, the two ends of the first connecting rod 5 are rotatably connected to the bottom frame 1 and the seat body 41 respectively, the push rod 6 is rotatably connected to the bottom frame 1 and the seat body 41 respectively, one end of the second connecting rod 7 is rotatably connected to the first connecting rod 5 or the push rod 6, and the other end is connected to the bottom frame 1 in a rotatable and slidable manner. At the same time, the assisted-carrying vehicle also includes a locking mechanism 8 for limiting the other end of the second connecting rod 7 from sliding relative to the bottom frame 1.

[0044] Specifically, in this embodiment, a structure is employed in which one end of the second connecting rod 7 is rotatably connected to the push rod 6. When the vehicle is in the unfolded state for assisting pushing, the second connecting rod 7 extends upward from the rear to the front and supports the push rod 6, restricting its downward rotation. When the vehicle is in the folded state for riding, the first connecting rod 5, the push rod 6, and the second connecting rod 7 are mutually close and all move closer to the bottom frame 1.

[0045] See also Figure 1 、 Figure 5-Figure 6 As shown, the push rod 6, the second connecting rod 7 and the bottom frame 1 form a triangle, wherein the angle between the second connecting rod 7 and the bottom frame 1 is an acute angle; at the same time, the first connecting rod 5 and the push rod 6 are arranged parallel to each other, and the rotation connection between the push rod 6 and the bottom frame 1 is located between the rotation connection between the first connecting rod 5 and the bottom frame 1 and the rotation connection between the second connecting rod 7 and the bottom frame 1.

[0046] See also Figure 1 、 Figure 5-9 As shown, no matter the assisted-carrying vehicle is in the unfolded state for assisting pushing or in the folded state for riding, the first connecting rod 5 and the push rod 6 basically extend from front to back and upward; and the second connecting rod 7 extends from back to front and upward when the assisted-carrying vehicle is in the unfolded state for assisting pushing, and when the assisted-carrying vehicle is in the folded state for riding, the second connecting rod 7 basically approaches or extends from back to front and downward.

[0047] See also Figures 1 to 2 、 Figure 5-Figure 9 As shown, in this embodiment, no matter the vehicle is in the unfolded state for assisting in pushing or in the folded state for riding, the seat body 41 is always in a horizontal state or a nearly horizontal state that is convenient for children to sit on, and the bottom frame 1 remains unchanged; wherein when the vehicle is converted from the folded state for riding to the unfolded state for assisting in pushing, the seat body 41 moves upward and forward away from the bottom frame 1 until it is fully unfolded, and conversely, it moves backward and downward until it is folded.

[0048] Further, see again Figures 1 to 9 As shown in the accompanying drawings, in this example, the two ends of the first connecting rod 5 are respectively rotatably connected to the front portion of the bottom frame 1 and the front portion of the seat body 41, the lower end portion of the push rod 6 is rotatably connected to the middle portion of the bottom frame 1, the rear portion of the seat body 41 is rotatably connected to the middle portion of the push rod 6 or a portion near the middle portion, one end portion of the second connecting rod 7 is rotatably connected to the lower portion of the push rod 6 or a portion near the lower end portion, and the other end portion is rotatably and slidably connected relative to the rear portion of the bottom frame 1.

[0049] See also Figure 1 、 Figure 5As shown in the accompanying drawings, the push rod 6 includes a telescopic straight rod, a push rod cross bar 64 connected to the upper end of the telescopic straight rod, the lower end of the telescopic straight rod is rotatably connected to the bottom frame 1, and the extension direction of the telescopic straight rod is the same as that of the first connecting rod 5. In this example, the telescopic straight rod includes a first support rod 61 with a lower end rotatably connected to the bottom frame 1, a second support rod 62 arranged to slide relative to the first support rod 61, and a third support rod 63 arranged to slide relative to the second support rod 62. The upper end of the third support rod 63 is connected to the push rod cross bar 64, wherein the first support rod 61, the second support rod 62 and the third support rod 63 extend in the same direction. Such an arrangement realizes the extension and contraction of the overall length of the push rod 6, for example, from Figures 5 to 9 Shortening of the middle push rod 6.

[0050] In this embodiment, Figure 1 、 Figures 5 to 9 As shown, the seat mechanism 4 further includes a seat handle 42 whose lower end is rotatably connected to the seat body 41. The lower end of the seat handle 42 is provided with a limiting protrusion 421 for limiting the seat handle 42 from rotating forward and downward relative to the seat body 41 from a set position (the set position refers to the fixed position of the seat handle 42 when used by a child. The seat handle 42 can only rotate from the above-mentioned fixed position toward the direction close to the seat body 41, but cannot rotate from the above-mentioned fixed position toward the direction away from the seat body 41 (forward and downward)). The structure of the limiting protrusion 421 can be as shown Figure 9 or Figure 12 The structure shown in the figure realizes the function of limiting the further movement of the seat handle 42 when it conflicts with the seat body 41, thereby ensuring that the seat handle 42 remains in a stable state. When the seat handle 42 needs to be folded toward the seat body 41, the limiting protrusion 421 has no restrictive effect on it at all and can directly break away from the conflicting surface. The structure is simple and easy to operate.

[0051] See also Figure 1 、 Figures 5 and 6 As shown, in this example, the rotational connection between the seat body 41 and the first connecting rod 5 is located between the rotational connection between the seat handle 42 and the seat body 41 and the rotational connection between the seat body 41 and the push rod 6; and the angle formed between the seat handle 42 and the seat body 41 is an obtuse angle, which can be greater than 90° and less than 180°, greater than 90° and less than 170°, greater than 90° and less than 160°, greater than 95° and less than 150°, greater than 95° and less than 140°, etc.

[0052] In this embodiment, see Figure 1 、 Figure 3 、 Figure 4 and Figure 10As shown in the accompanying drawings, the assisted-carrying vehicle further includes a sleeve 9 slidably mounted on the bottom frame 1. The other end of the second connecting rod 7 is rotatably connected to the sleeve 9. A locking mechanism 8 is disposed between the sleeve 9 and the bottom frame 1 and is used to restrict the sleeve 9 from sliding relative to the bottom frame 1. Specifically, the locking mechanism 8 includes a slot 81 disposed on the bottom frame 1 and a locking tongue 82 slidably disposed within the sleeve 9. The locking tongue 82 is detachably engaged with the slot 81. When the locking mechanism 8 is locked, the locking tongue 82 is engaged with the slot 81, and the assisted-carrying vehicle is in an unfolded state for assisting in pushing the vehicle. When the locking mechanism 8 is unlocked, the locking tongue 82 is disengaged from the slot 81, and the assisted-carrying vehicle is in a folded state or has already been folded for riding. The locking mechanism 8 also includes an elastic component 83 that moves the locking tongue 82 toward the slot 81 and engages with it. One end of the elastic component 83 abuts against the sleeve 9, and the other end abuts against the locking tongue 82. The elastic component 83 may be a spring.

[0053] See also Figures 1 to 3 、 Figure 12 As shown, the bottom frame 1 includes a support bracket 11, a cross brace 12 detachably connected to the front of the support bracket 11 and extending in the left-right direction, a connecting member 13 arranged on the left and right sides of the rear of the support bracket 11 and detachably connected to the rear of the support bracket 11, and a support member 14 detachably connected to the middle of the support bracket 11 and extending in the left-right direction. The front wheel assembly 2 is arranged at the bottom of the cross brace 12, and the rear wheel assembly 3 is arranged on the connecting member 13. The lower end of the first connecting rod 5 is rotatably connected to the cross brace 12, the lower end of the push rod 6 (that is, the lower end of the first support rod 61) is rotatably connected to the support member 14, and the sliding sleeve 9 is sleeved on the support bracket 11 and slidably connected. Figure 3-4 and Figure 10-11 As shown, the card slot 81 is set on the support bracket 11, thereby forming a bottom structure as shown in the figure. The overall structure is simple, beautiful and generous. After the structure is folded, it is more conducive to children's sliding riding and is extremely comfortable.

[0054] Operation process: For example, when the vehicle is switched from the unfolded state for assisting pushing to the folded state for riding, the operator manually moves the locking tongue 82 to disengage the locking groove 81 (e.g. Figure 3-4 In the middle, it can slide in the direction of the compression spring), thereby unlocking the entire structure, and then the push rod 6 can be pressed backward and downward (such as Figure 5 , rotates around the turning point A, toward Figure 6 F direction as shown), thereby driving the second connecting rod 7 to drive the sliding sleeve 9 to slide toward the rear of the support bracket 11 (as shown in FIG. Figure 6 , slides in the direction of D, and vice versa, when unfolded, slides in the direction of C, and the push rod 6 rotates in the direction of E). During this process, the seat body 41 and the first connecting rod 5 are both moved closer to the bottom frame 1 (such as Figure 5, the first connecting rod 5 rotates around the turning point B), when it slides to Figures 7 and 8 When the vehicle is in the position shown, the vehicle is folded and can be ridden by children. Figure 9 The seat handle 42 is folded to the fully folded state, which can be stored; when the vehicle is switched from the folded state for riding to the unfolded state for assisting pushing, the push rod 6 is pulled upward, which drives the second connecting rod 7 to move and then drives the sliding sleeve 9 to slide (towards the Figure 6 C direction sliding), until the movement is expanded to Figure 5 or Figure 6 The position of the unfolded state is shown, at this time, the locking tongue 82 is inserted into the card slot 81 under the action of the elastic component 83, thereby locking the entire structure and allowing children to sit and be pushed.

[0055] In other embodiments, one end of the second connecting rod 7 can be rotatably connected to the support bracket 11, and the other end can be connected to the push rod 6 both rotatably and slidably. A limiting mechanism or a locking structure the same as the aforementioned embodiment can be provided to limit the sliding of the other end of the second connecting rod 7 relative to the push rod 6.

[0056] In summary, the foldable children's vehicle of the present invention can assist children in carrying when in the unfolded state, and can allow children to slide and ride independently when in the folded state. It not only enriches the functional diversity of children's vehicles and can adapt to applications in different scenarios, but also has a simple folding method, fewer rods, quick and convenient conversion between the two states, and good safety and stability.

[0057] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A foldable child-assisting vehicle, characterized in that: The auxiliary vehicle includes a bottom frame, a front wheel assembly arranged at the front of the bottom frame, a rear wheel assembly arranged at the rear of the bottom frame, a seat mechanism capable of moving up and down relative to the bottom frame, a first connecting rod, a push rod and a second connecting rod; The seat mechanism includes a seat body, a seat handle whose lower end is rotatably connected to the seat body, a limit protrusion being provided at the lower end of the seat handle for limiting the seat handle from rotating forward and downward relative to the seat body from a set position, both ends of the first connecting rod being rotatably connected to the bottom frame and the front portion of the seat body, the push rod being rotatably connected to the bottom frame and the rear portion of the seat body, and the first connecting rod and the push rod being arranged parallel to each other; One end of the second connecting rod is rotatably connected to the first connecting rod or the push rod, and the other end is rotatably and slidably connected relative to the bottom frame. The auxiliary vehicle further includes a locking mechanism for limiting the other end of the second connecting rod from sliding relative to the bottom frame. The assisted-carriage includes an unfolded state for assisting in pushing a load and a folded state for riding. When the assisted-carriage is in the unfolded state for assisting in pushing a load, the second connecting rod extends from rear to front and upward and is used to support and limit the first connecting rod or the push rod from rotating downward; when the assisted-carriage is in the folded state for riding, the first connecting rod, the push rod and the second connecting rod are close to each other, and the push rod extends from front to rear and upward.

2. The foldable child-assisting vehicle according to claim 1, characterized in that: The push rod, the second connecting rod and the bottom frame form a triangle, wherein the included angle between the second connecting rod and the bottom frame is an acute angle.

3. The foldable child-assisting vehicle according to claim 1, characterized in that: The rotation connection between the push rod and the bottom frame is located between the rotation connection between the first connecting rod and the bottom frame and the rotation connection between the second connecting rod and the bottom frame.

4. The foldable child-assisting vehicle according to claim 1, characterized in that: The auxiliary loading vehicle further includes a sliding sleeve slidably mounted on the bottom frame, the other end of the second connecting rod is rotatably connected to the sliding sleeve, and the locking mechanism is arranged between the sliding sleeve and the bottom frame and is used to limit the sliding of the sliding sleeve relative to the bottom frame.

5. The foldable child-assisting vehicle according to claim 4, characterized in that: The locking mechanism includes a card slot arranged on the bottom frame and a lock tongue slidably arranged in the sliding sleeve. The lock tongue is detachably matched with the card slot. When the locking mechanism is locked, the lock tongue is connected to the card slot; when the locking mechanism is unlocked, the lock tongue is disengaged from the card slot.

6. The foldable child-assisting vehicle according to claim 5, characterized in that: The locking mechanism further comprises an elastic component for driving the lock tongue to move toward the slot and cooperate with the slot. One end of the elastic component is abutted against the sliding sleeve, and the other end is abutted against the lock tongue.

7. The foldable child-assisting vehicle according to claim 1, characterized in that: The push rod includes a telescopic straight rod and a push rod cross bar connected to the upper end of the telescopic straight rod. The lower end of the telescopic straight rod is rotatably connected to the bottom frame. The extension direction of the telescopic straight rod is the same as that of the first connecting rod.

8. A foldable child-assisting vehicle, characterized in that: The assisted-carriage comprises a bottom frame, a front wheel assembly arranged at the front of the bottom frame, a rear wheel assembly arranged at the rear of the bottom frame, a seat mechanism capable of moving up and down relative to the bottom frame, a first connecting rod, a push rod, and a second connecting rod; wherein the seat mechanism comprises a seat body, a seat handle whose lower end is rotatably connected to the seat body, the lower end of the seat handle being provided with a limiting protrusion for limiting the seat handle from rotating forward and downward relative to the seat body from a set position, the two ends of the first connecting rod being rotatably connected to the bottom frame and the front of the seat body, respectively, and the first connecting rod and the push rod being arranged parallel to each other; The push rod is rotatably connected to the bottom frame and the rear portion of the seat body respectively; One end of the second connecting rod is rotatably connected to the bottom frame, and the other end is rotatably and slidably connected to the push rod, and the auxiliary vehicle further includes a locking mechanism for limiting the other end of the second connecting rod from sliding relative to the push rod; The assisted-carriage includes an unfolded state for assisting in pushing a load and a folded state for riding. When the assisted-carriage is in the unfolded state for assisting in pushing a load, the second connecting rod extends from rear to front and upward and is used to support and limit the first connecting rod or the push rod from rotating downward; when the assisted-carriage is in the folded state for riding, the first connecting rod, the push rod and the second connecting rod are close to each other, and the push rod extends from front to rear and upward.

Images