Folding mechanism and buggy

Abstract

The utility model relates to the technical field of baby carriages, in particular to a baby carriage which comprises a folding mechanism, the folding mechanism comprises a carriage frame body, front legs, rear legs and a carriage pushing rod, the front legs are located at the front end of the carriage frame body, and the rear legs and the carriage pushing rod are both located at the rear end of the carriage frame body; a rear side connecting piece is arranged between the frame body and the rear leg, and a second connecting assembly is arranged between the front leg and the cart pushing rod. When the stroller needs to be folded, the stroller rod is poked, the stroller rod swings around the stroller frame body, the included angle between the stroller rod and the stroller frame body is gradually decreased, and folding of the stroller rod is achieved. Meanwhile, the rear leg swings towards the front leg around the frame main body under the driving of the rear side connecting piece, and the included angle between the rear leg and the frame main body is gradually reduced, so that the rear leg is folded; meanwhile, the front legs are driven by the second connecting assemblies to swing towards the rear legs around the frame main body, and folding of the front legs is achieved; the folding of the whole structure can be completed only by shifting the cart rod without operating the front legs and the rear legs by multiple persons, so that the efficiency is high, and the operation is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of child strollers, in particular to a folding mechanism and a child stroller. Background Art

[0002] Strollers are auxiliary tools for infants and young children to travel. Adults push the stroller while children sit in it, which can reduce the travel burden of parents. The emergence of foldable strollers has further reduced the burden on parents. When not in use (for example, when riding in public transportation), the stroller can be folded up and carried, and then opened when in use. However, foldable strollers are not as safe as traditional strollers, mainly because the folding of foldable strollers is achieved through an articulated structure with only one hinge point. The entire structure is designed for easy folding, and the landing stability is poor after opening, which poses a safety hazard and fails to combine safety and portability well.

[0003] The utility model with application number CN202322530399.1 discloses a foldable baby stroller, comprising a central articulated seat and a telescopic frame, the top of the central articulated seat is fixedly connected to the telescopic frame, the top of the telescopic frame is fixedly connected to a push handle, a locking bolt is fixedly connected between the bottom end of the push handle and the top of the telescopic frame, the locking bolt is located on one side of the top of the telescopic frame, the push handle is inserted into the top of the telescopic frame, the bottom of the central articulated seat is hinged with a sleeve rod, the front end of the sleeve rod is sleeved with a seat plate, front legs are movably hinged on both sides of the telescopic frame, the middle section of the front legs is fixedly connected to a hinge block, and the outside of the hinge block is hinged with a guardrail.

[0004] When folding an existing stroller, the front wheel assembly and the rear wheel assembly need to be folded separately. When folding, the stroller is prone to tilting and falling. It requires multiple people to fold the front wheel assembly and the rear wheel assembly separately at the same time to ensure the normal folding of the stroller, which is time-consuming and labor-intensive. Utility Model Content

[0005] The utility model aims to provide a folding mechanism and a baby stroller to address the deficiencies of the prior art.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A folding mechanism comprises a frame body, and front legs, rear legs and a push rod rotatably connected to the frame body, wherein the front legs are located at the front end of the frame body, and the rear legs and the push rod are both located at the rear end of the frame body; a rear side connecting piece is provided between the frame body and the rear legs, and a second connecting assembly is provided between the front legs and the push rod; when the push rod swings around the frame body, the rear legs are driven to swing around the frame body through the rear side connecting piece, and at the same time, the front legs are driven to swing around the frame body through the second connecting assembly.

[0008] Furthermore: a first guide seat is provided at one end of the frame body, the bottom end of the push rod swings around the first guide seat, one end of the second connecting assembly is rotatably connected to the bottom end of the push rod, and when the push rod swings around the first guide seat, the rear legs and the front legs simultaneously swing around the frame body to achieve folding or unfolding.

[0009] Further: the cart rod is provided with a first rotating seat rotatably matched with the first guide seat, a second guide seat is formed at the bottom of the second guide seat, the second guide seat is provided with a rotating fulcrum, one end of the rear connecting piece is rotatably connected to the rear leg, and the rear leg swings around the rotating fulcrum of the second guide seat.

[0010] Furthermore: the rear connecting piece includes an arc-shaped strip with an arc-shaped structure, and connecting structures are formed at both ends of the arc-shaped strip.

[0011] Further: the second connecting component includes a front connecting member connected to the front legs and a rear connecting member connected to the cart rod, and an intermediate connecting member is connected between the front connecting member and the rear connecting member.

[0012] Furthermore: a second rotating seat is formed at the bottom end of the cart rod, and the rear rotating member includes a rear connecting rod rotatably connected to the second rotating seat. When the cart rod is moved, the second rotating seat performs an arc-shaped swinging motion, and the rear connecting rod drives the intermediate connecting member to move between the front legs and the rear legs.

[0013] Further: the front connecting member includes a front connecting rod, one end of the front connecting rod is movably connected to the middle connecting member, and the other end is rotationally connected to the front leg, and the middle connecting member moves between the front leg and the rear leg to drive the front leg and the rear leg to unfold or fold at the same time.

[0014] Furthermore: the intermediate connecting member includes an intermediate connecting rod and an intermediate connecting block, the intermediate connecting block and the intermediate connecting rod move simultaneously, and one end of the front connecting rod is rotatably connected to the intermediate connecting block.

[0015] Furthermore: the middle connecting block is formed with a through hole for the middle connecting rod to slide through, the middle connecting rod is formed with a long sliding groove along the axial direction, and the middle connecting block is formed with a sliding rod that slides with the long sliding groove.

[0016] A baby stroller comprises a folding mechanism, a front wheel assembly is installed on the front legs, a rear wheel structure is installed on the rear legs, and a stroller structure is installed on the stroller rod.

[0017] The beneficial effects of the utility model are as follows: when folding is required, the push rod is toggled, and the push rod swings around the frame body, and the angle between the push rod and the frame body gradually becomes smaller, so that the folding of the push rod is realized; at the same time, the rear legs are driven by the rear connecting member to swing around the frame body toward the front legs, and the angle between the rear legs and the frame body gradually becomes smaller, so that the folding of the rear legs is realized; at the same time, the front legs are driven by the second connecting component to swing around the frame body toward the rear legs, so that the folding of the front legs is realized; there is no need for multiple people to operate the front legs and the back, and the folding of the overall structure can be completed by toggling the push rod, which is not only efficient but also simple and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the state diagram of the folding mechanism when it is unfolded.

[0019] Figure 2 This is a diagram of the folding mechanism when it is unfolded, hiding a portion of the front legs and the first guide seat.

[0020] Figure 3 This is a diagram of the folding mechanism in the folding state, with the front legs and a portion of the first guide seat hidden.

[0021] Figure 4 This is the state diagram of the folding mechanism during folding.

[0022] Figure 5 This is a diagram of the state after the folding mechanism is fully folded.

[0023] Figure 6 The figure is a schematic diagram of the structure of a children's car.

[0024] Reference numerals include:

[0025] 1-Frame body,

[0026] 10-arc bar, 11-first guide seat, 12-second guide seat, 13-first rotating groove,

[0027] 14-trolley rod, 15-first rotating seat, 16-eccentric connecting part, 17-arc groove, 18-rear leg,

[0028] 19-Connection structure,

[0029] 2- Second connection component,

[0030] 20-rotation fulcrum, 21-intermediate connecting rod, 22-rear connecting rod, 23-second rotating seat,

[0031] 24-second guide groove, 25-front connecting rod, 26-middle connecting block, 27-through hole, 28-sliding long groove, 3-front leg,

[0032] 31 - sliding rod, 32 - sliding sleeve, 33 - guide sleeve, 34 - third guide seat, 35 - second rotating groove, 36 - third rotating seat, 37 - front wheel assembly 38 - rear wheel assembly 39 - cart structure. DETAILED DESCRIPTION

[0033] The utility model is described in detail below with reference to the accompanying drawings.

[0034] like Figure 1-6 As shown, a folding mechanism comprises a frame body 1 and a front leg 3, a rear leg 18 and a push rod 14 rotatably connected to the frame body 1, the front leg 3 is located at the front end of the frame body 1, and the rear leg 18 and the push rod 14 are both located at the rear end of the frame body 1; a rear side connecting piece is arranged between the frame body 1 and the rear leg 18, and a second connecting component 2 is arranged between the front leg 3 and the push rod 14; when the push rod 14 swings around the frame body 1, the rear leg 18 is driven to swing around the frame body 1 through the rear side connecting piece; when the rear leg 18 swings around the frame body 1 toward the front leg 3, the front leg 3 is driven to swing around the frame body 1 toward the rear leg 18 through the second connecting component 2.

[0035] When folding is required, the push rod 14 is moved, and the push rod 14 swings around the frame body 1, and the angle between the push rod 14 and the frame body 1 gradually becomes smaller, so that the push rod 14 is folded; at the same time, the rear legs 18 swing around the frame body 1 toward the front legs 3 under the drive of the rear connecting member, and the angle between the rear legs 18 and the frame body 1 gradually becomes smaller, so that the rear legs 18 are folded; at the same time, the front legs 3 swing around the frame body 1 toward the rear legs 18 under the drive of the second connecting component 2, so that the front legs 3 are folded; there is no need for multiple people to operate the front legs 3 and retreat, and the folding of the overall structure can be completed by moving the push rod 14, which is not only efficient, but also simple and convenient to operate; and it is flatter after folding, the space occupied is further reduced, and the portability is further improved.

[0036] Preferably, a first supporting portion is provided at one end of the frame body 1, the bottom end of the push rod 14 swings around the first supporting portion, the first supporting portion is formed with a second supporting portion, and the rear legs 18 swing around the second supporting portion. When the bottom end of the push rod 14 swings around the first supporting portion, the rear legs 18 swing around the second supporting portion of the frame body 1 under the drive of the rear side connecting member.

[0037] Furthermore, the first supporting portion includes a first guide seat 11 formed at one end of the frame body 1, the pushing rod 14 is provided with a first rotating seat 15 rotatably matched with the first guide seat 11, and the second supporting portion includes a second guide seat 12 formed at the bottom of the first guide seat 11, the second guide seat 12 is provided with a rotating fulcrum 20 for the rear leg 18 to be rotatably connected to realize swinging around the rotating fulcrum 20, and the other end of the rear connecting piece is rotatably connected to the top end of the rear leg 18.

[0038] Preferably, the first guide seat 11 is formed with a first rotating groove 13 for movably mounting the first rotating seat 15. The first rotating seat 15 and the first rotating groove 13 are rotatably connected via an axial hole. The first rotating seat 15 can be protected by the first guide seat 11 and the first rotating groove 13, and the stability during rotation is further improved.

[0039] Preferably, the second guide seat 12 is longitudinally formed at the bottom of the first guide seat 11, and one end of the rear connecting member is installed on the second guide seat 12. The rear connecting member can swing around the axial hole connection between the first rotating seat 15 and the first rotating groove 13, and the bottom end of the rear connecting member can drive the rear leg 18 to swing around the rotating fulcrum 20 of the second guide seat 12.

[0040] Preferably, the rear connecting member includes an arc-shaped bar 10, at both ends of which are respectively formed with connecting structures 19; the first rotating seat 15 is a cylindrical structure, and the first rotating seat 15 is provided with an eccentric connecting portion 16, and one end of the arc-shaped bar 10 is connected to the eccentric connecting portion 16 of the first rotating seat 15 through the connecting structure 19. Since the eccentric connecting portion 16 is formed at an eccentric position on the end face of the first rotating seat 15, when the cart rod 14 is moved, the first rotating seat 15 rotates with the first guide seat 11, and the eccentric connecting portion 16 formed on the first rotating seat 15 will rotate around the axis of the first rotating seat 15, and the eccentric connecting portion 16 moves in a circular trajectory. The other end of the arc-shaped bar 10 is rotatably connected to the rear leg 18 through the connecting structure 19, so that the bottom of the arc-shaped bar 10 can push the rear leg 18 to swing around the rotating fulcrum 20 of the second guide seat 12 through the connecting structure 19.

[0041] Preferably, the rear connecting member includes a bending strip of a bending structure, which has the same effect and function as the arc strip 10. When the first rotating seat 15 rotates and cooperates with the first guide seat 12, it can push the top of the rear leg 18 to move away from the frame body 1, and most of the rear leg 18 swings around the swing fulcrum 20 of the second guide seat 12 toward the frame body 1 to achieve folding.

[0042] It should be noted that the connection between the arc strip 10 and the rear leg 18 is located above the rotation fulcrum 20, that is, the arc-shaped trajectory movement at the bottom of the arc strip 10 drives the rear leg 18 to swing around the rotation fulcrum 20 of the second guide seat 11, thereby realizing the unfolding or folding of the rear leg 18.

[0043] Preferably, the first rotating seat 15 is also formed with an arc groove 17 for installing the arc bar 10, and the shape of the arc groove 17 is adapted to the shape of the arc bar 10. When the cart rod 14 and the rear legs 18 are both unfolded, most areas of the arc bar 10 fit into the arc groove 17, which can shield the arc bar 10.

[0044] The second connecting component 2 includes a front connecting piece connected to the front leg 3 and a rear connecting piece connected to the trolley rod 14, and an intermediate connecting piece is connected between the front connecting piece and the rear connecting piece. Therefore, when the trolley rod 14 is moved, the trolley rod 14 will rotate and cooperate with the first guide seat 11 through the first rotating seat 15, and the trolley rod 14 will swing around the first guide seat 11. The bottom of the trolley rod 14 will move in an arc trajectory, and the rear connecting piece will move accordingly, thereby driving the intermediate connecting piece to move accordingly between the front leg 3 and the rear leg 18, and the front leg 3 connected to the front connecting piece will swing accordingly around the front end of the frame body 1 to achieve unfolding or folding.

[0045] Specifically, a second rotating seat 23 is formed at the bottom end of the push rod 14, and the rear rotating member includes a rear connecting rod 22 that is rotatably connected to the second rotating seat 23. When the push rod 14 is moved, the second rotating seat 23 swings around the axis of the first rotating seat 15, and the middle connecting member is driven to move between the front leg 3 and the rear leg 18 through the rear connecting rod 22. When folding, the angle between the upper part of the push rod 14 and the frame body 1 is continuously reduced, and the second rotating seat 23 at the bottom of the push rod 14 swings counterclockwise around the first rotating seat 15, and the middle connecting member is driven to move toward the rear leg 18 through the rear connecting rod 22, and at the same time, the front connecting member drives the front leg 3 to swing around the front end of the frame body 1 toward the rear leg 18, so as to achieve folding.

[0046] Preferably, the second rotating seat 23 is formed with a second guide groove 24, and the second guide groove 24 can be used to accommodate the rear connecting rod 22. The second guide groove 24 is rotatably connected to the rear connecting rod 22 through an axial hole. When the second rotating seat 23 at the bottom of the cart rod 14 swings outward, the angle between the rear connecting rod 22 and the second rotating seat 23 is continuously reduced, so that a part of the rear connecting rod 22 is embedded in the second guide groove 24, thereby preventing the rear connecting rod 22 from colliding with the second rotating seat 23 and ensuring the stability of the rotating connection.

[0047] Furthermore, a third guide seat 34 is formed at the front end of the frame body 1 , a second rotation groove 35 is formed on the third guide seat 34 , and a third rotation seat 36 rotatably connected to the second rotation groove 35 of the third guide seat 34 is formed on the top of the front leg 3 .

[0048] Specifically, the front connecting member includes a front connecting rod 25, one end of the front connecting rod 25 is movably connected to the middle connecting member, and the other end of the front connecting rod 25 is rotatably connected to the upper part of the front leg 3. When the front connecting rod 25 moves toward the rear leg 18 along with the middle connecting member, the front leg 3 will swing around the second rotating groove 35 of the third guide seat 34 through the third rotating seat 36, and the front leg 3 swings toward the rear leg 18 to achieve folding; conversely, when the front connecting rod 25 moves toward the front leg 3 along with the middle connecting member, the front leg 3 swings outward to achieve unfolding.

[0049] Preferably, the intermediate connecting member includes an intermediate connecting rod 21 and an intermediate connecting block 26, the intermediate connecting block 26 moves simultaneously with the intermediate connecting rod 21, and one end of the front connecting rod 25 is rotatably connected to the intermediate connecting block 26; under the swing drive of the cart rod 14, the intermediate connecting rod 21 will move accordingly between the front leg 3 and the rear leg 18, and the intermediate connecting block 26 will move accordingly at the same time, thereby driving the front leg 3 to swing through the front connecting rod 25.

[0050] The middle connecting block 26 is formed with a through hole 27 for the middle connecting rod 21 to slide through, the middle connecting rod 21 is formed with a long sliding groove 28 along the axial direction, and the middle connecting block 26 is formed with a sliding rod 31 that slides with the long sliding groove 28. The middle connecting block 26 can slide with the long sliding groove 28 of the middle connecting rod 21 through the sliding rod 31. Since one end of the front connecting rod 25 swings around the front leg 3, and the other end of the front connecting rod 25 is connected to the middle connecting block 26, when the front connecting rod 25 swings around the front leg 3, the middle connecting block 26 can slide with the long sliding groove 28 of the middle connecting rod 21 through the sliding rod 31, so as to realize adaptive position adjustment and prevent the front connecting rod 25 from breaking.

[0051] Preferably, a sliding sleeve 32 is formed on the top of the middle connecting block 26, and the sliding sleeve 32 slides with the frame body 1 and moves along the length direction of the frame body 1. The frame body 1 is also formed with a guide sleeve 33 for guiding the sliding of the middle connecting rod 21. When the middle connecting rod 21 moves between the front leg 3 and the rear leg 18, the movement stability of the middle connecting rod 21 can be ensured by the guide sleeve 33. At the same time, the middle connecting block 26 can move in a straight line along the length direction of the frame body 1 through the sliding sleeve 32, thereby ensuring the stability of the movement. The overall structure is flatter after folding.

[0052] Folding process: When folding is required, the push rod 14 is moved, and the push rod swings around the first guide seat 11 of the frame body 1 through the first rotating seat 15, and the connecting structure 19 at one end of the arc bar 10 swings counterclockwise around the axis of the first rotating seat 26 at the same time. At this time, the other end of the arc bar 10 moves toward the rear leg 18, and the other end of the arc bar 10 is rotatably connected to the top of the rear leg 18 through the connecting structure 19, thereby driving the rear leg 18 to swing clockwise around the rotating fulcrum 20 of the second guide seat 12, so that the rear leg 18 swings toward the front leg 3, and the folding of the push rod 14 and the rear leg 18 is achieved at the same time. When the eccentric connecting part 16 rotates counterclockwise around the axis of the first rotating seat 15, the second rotating seat 23 rotates counterclockwise around the axis of the first rotating seat 15 at the same time, and the rear connecting rod 22 moves away from the front leg 3, thereby driving the middle connecting rod 21 to move away from the front leg 3 at the same time. The front end of the middle connecting rod 21 pulls the front leg 3 to swing around the front end of the frame body 1 through the front connecting rod 25, and the front leg 3 is folded at the same time.

[0053] A baby stroller comprises a folding mechanism, a front leg 3 is provided with a front wheel assembly 37, a rear leg 18 is provided with a rear wheel assembly 38, and a stroller rod 14 is provided with a stroller structure 39. When used outdoors, the stroller can be unfolded through the folding structure, and the stroller can be rolled by pushing the stroller structure 39 in conjunction with the front wheel assembly 37 and the rear wheel assembly 38; when it needs to be folded, the stroller rod 14 is toggled, and the stroller rod 14 swings around the frame body 1, and the angle between the stroller rod 14 and the frame body 1 gradually becomes smaller, so that the stroller rod 14 is folded; at the same time, the rear legs 18 swing around one end of the frame body 1 toward the front legs 3 under the drive of the rear connecting member, and the angle between the rear legs 18 and the frame body 1 gradually becomes smaller, so that the rear legs 18 are folded; at the same time, the front legs 3 swing around the frame body 1 toward the rear legs 18 under the drive of the second connecting assembly 2, so that the front legs 3 are folded; there is no need for multiple people to operate the front legs 3 and the back of the stroller, and the folding of the overall structure can be completed by toggling the stroller rod 14, which is not only efficient, but also simple and convenient to operate; and after folding, it is flatter, the space occupied is further reduced, and the portability of the stroller is further improved.

[0054] In summary, it can be seen that the utility model has the above-mentioned excellent characteristics, which can enhance the performance unprecedented in the prior art and become a product with great practical value.

[0055] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A folding mechanism, comprising a frame body and front legs, rear legs and a push rod rotatably connected to the frame body, characterized in that: The front legs are located at the front end of the frame body, and the rear legs and the push rod are both located at the rear end of the frame body; a rear connecting piece is provided between the frame body and the rear legs, and a second connecting assembly is provided between the front legs and the push rod; when the push rod swings around the frame body, the rear legs are driven to swing around the frame body through the rear connecting piece, and at the same time, the front legs are driven to swing around the frame body through the second connecting assembly.

2. A folding mechanism according to claim 1, characterized in that: A first guide seat is provided at one end of the frame body, the bottom end of the push rod swings around the first guide seat, one end of the second connecting assembly is rotatably connected to the bottom end of the push rod, and when the push rod swings around the first guide seat, the rear legs and the front legs simultaneously swing around the frame body to achieve folding or unfolding.

3. A folding mechanism according to claim 2, characterized in that: The cart rod is provided with a first rotating seat that rotates with the first guide seat, a second guide seat is formed at the bottom of the second guide seat, the second guide seat is provided with a rotating fulcrum, one end of the rear connecting piece is rotatably connected to the rear leg, and the rear leg swings around the rotating fulcrum of the second guide seat.

4. A folding mechanism according to claim 1, characterized in that: The rear connecting member comprises an arc-shaped bar with an arc-shaped structure, and connecting structures are respectively formed at both ends of the arc-shaped bar.

5. A folding mechanism according to claim 1, characterized in that: The second connecting assembly includes a front connecting piece connected to the front legs and a rear connecting piece connected to the cart rod, and an intermediate connecting piece is connected between the front connecting piece and the rear connecting piece.

6. A folding mechanism according to claim 5, characterized in that: A second rotating seat is formed at the bottom end of the push rod, and the rear rotating member includes a rear connecting rod rotatably connected to the second rotating seat. When the push rod is moved, the second rotating seat performs an arc-shaped swinging motion, and the rear connecting rod drives the intermediate connecting member to move between the front leg and the rear leg.

7. A folding mechanism according to claim 5, characterized in that: The front connecting member includes a front connecting rod, one end of which is movably connected to the middle connecting member, and the other end is rotationally connected to the front leg. The middle connecting member moves between the front leg and the rear leg to drive the front leg and the rear leg to unfold or fold at the same time.

8. A folding mechanism according to claim 7, characterized in that: The intermediate connecting member comprises an intermediate connecting rod and an intermediate connecting block. The intermediate connecting block moves simultaneously with the intermediate connecting rod, and one end of the front connecting rod is rotatably connected to the intermediate connecting block.

9. A folding mechanism according to claim 8, characterized in that: The middle connecting block is formed with a through hole for the middle connecting rod to slide through, the middle connecting rod is formed with a long sliding groove along the axial direction, and the middle connecting block is formed with a sliding rod that slides with the long sliding groove.

10. A baby stroller, comprising the folding mechanism according to any one of claims 1 to 9, characterized in that: The front legs are equipped with front wheel assemblies, the rear legs are equipped with rear wheel structures, and the cart rods are equipped with cart structures.

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