Drawstring folding mechanism of stroller

Abstract

The utility model discloses a child stroller drawstring folding mechanism which comprises a first supporting frame and a second supporting frame, the second supporting frame is arranged at the rear end of the first supporting frame in a rotating mode, and the side view cross section of the first supporting frame and the side view cross section of the second supporting frame are designed to be in a V shape. By means of the mechanical simplified design, a user only needs to pull the connecting belt upwards, the connecting belt can drive the pull belt to control the limiting ring, the mounting belt, the second supporting frame and the first supporting frame to be in the opposite moving state, and then the unfolded first supporting frame and the unfolded second supporting frame are stored. By using the device provided by the invention, the first support frame and the second support frame can be stored only by single-hand operation of a user, the operation mode is time-saving and labor-saving, and meanwhile, the subsequent manufacturing difficulty and cost of the device are also reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of stroller folding mechanisms, specifically a stroller folding mechanism with a pull strap. Background Technology

[0002] To facilitate the transportation, storage, and carrying of strollers, most strollers are foldable. Currently, the folding structures of most folding strollers on the market are simple structures such as telescopic, sliding, and rotating, which have the following problems: Due to the limitations of the stroller's folding structure, folding often requires the use of both hands, but people may be holding a child or other items while folding the stroller, making it inconvenient to operate; due to unreasonable folding structures, high friction at the mating points, and fragile structures, folding is difficult, not easy to fold, and easily damaged.

[0003] A patent search revealed that the publication number "CN213735148U" is titled "A Folding Structure for a Child Stroller." While the device in this document solves the aforementioned problem through a mechanical linkage design, its overall mechanical structure is overly complex, reducing user convenience and increasing the difficulty and cost of subsequent manufacturing. Therefore, this invention designs a child stroller folding mechanism with a pull strap to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a stroller folding mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stroller pull strap folding mechanism, including a first support frame and a second support frame, the second support frame being rotatably disposed at the rear end of the first support frame, the side cross-section of the first support frame and the second support frame having a V-shaped design, pull straps being fixedly disposed on the left and right sides of the lower outer end of the first support frame, a limiting component being disposed on the outer wall of the second support frame, the limiting component including mounting straps fixedly disposed on the left and right sides of the lower outer end of the second support frame, a limiting ring being fixedly disposed at the front end of the mounting strap, the limiting rings corresponding one-to-one with the pull straps, the limiting rings being sleeved on the outside of the pull straps, the end of the pull strap away from the first support frame passing through the position between the first support frame and the second support frame, a connecting strap being sewn between the rear ends of the two pull straps, the connecting strap being disposed at the upper end of the transition area between the first support frame and the second support frame, the pull straps being designed to be in non-contact with the transition area between the first support frame and the second support frame.

[0006] Furthermore, rollers are fixed to the bottom left and right sides of the first and second support frames, and the rear rollers have a foot brake function.

[0007] Furthermore, the rotating areas of the first support frame and the second support frame are connected by two connecting rods, which are designed to be parallel to each other.

[0008] Furthermore, the upper end of the connecting rod is provided with a pull rod, and there are two pull rods, which are designed to be parallel to each other.

[0009] Furthermore, a locking mechanism is provided between the connecting rod and the pull rod, and the locking mechanism is rotatably connected to the connecting rod and the pull rod.

[0010] Furthermore, a push rod is fixed between each pair of the pull rods, and the push rod connects the two pull rods into one unit. The front cross-section of the push rod is designed with a U-shape.

[0011] Furthermore, the connecting rod is provided with a rotating component at the transition area between it and the first support frame and the second support frame.

[0012] Furthermore, the connecting strap connects two pull straps into one unit, and both the connecting strap and the pull strap are made of soft material.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through a simplified mechanical design, this utility model allows users to simply pull the connecting belt upwards, causing the connecting belt to move the pull belt control limit ring, along with the mounting belt and the second support frame, in a state of opposite movement to the first support frame. This allows the unfolded first and second support frames to be stored. Thus, by using the device in this application, users can store the first and second support frames with just one hand, saving time and effort. It also reduces the difficulty and cost of subsequent manufacturing of this device.

[0015] 2. This utility model, through the design of the rotation function, can fold and store the unfolded connecting rod, and through the secondary folding design, the pull rod can be folded and stored, thereby reducing the overall storage volume of the device and greatly improving the convenience for users to transport the stored device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front perspective view of the stroller pull strap folding mechanism of this utility model;

[0018] Figure 2 This is a side view of the stroller pull strap folding mechanism of this utility model;

[0019] Figure 3 This is a side view showing the connection rod and pull rod when they are in place.

[0020] Figure 4 This is a side view showing the first and second support frames when they are in use.

[0021] Figure 5 A partial 3D view of the mounting belt, limit ring, and pull belt.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1-First support frame, 2-Second support frame, 3-Pull strap, 4-Limiting component, 401-Mounting strap, 402-Limiting ring, 403-Connecting strap, 5-Roller, 6-Connecting rod, 7-Pull rod, 8-Locking mechanism, 9-Push rod, 10-Rotating component. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] like Figure 1 , Figure 2 , Figure 4 , Figure 5As shown, the stroller pull strap folding mechanism includes a first support frame 1 and a second support frame 2. The second support frame 2 is rotatably mounted at the rear end of the first support frame 1. The side cross-section of the first support frame 1 and the second support frame 2 is V-shaped. Pull straps 3 are fixed on the left and right sides of the lower outer end of the first support frame 1. The outer wall of the second support frame 2 is provided with a limiting component 4. The limiting component 4 includes a mounting strap 401 fixed on the left and right sides of the lower outer end of the second support frame 2. A limiting ring 402 is fixed at the front end of the mounting strap 401. The limiting ring 402 corresponds to the pull strap 3 one by one. The limiting ring 402 is sleeved on the outside of the pull strap 3. The end of the pull strap 3 away from the first support frame 1 passes through the position between the first support frame 1 and the second support frame 2. A connecting strap 403 is sewn between the rear ends of the two pull straps 3. The connecting strap 403 is located at the upper end of the transition area between the first support frame 1 and the second support frame 2. The pull strap 3 is designed to be non-contacting with the transition area between the first support frame 1 and the second support frame 2.

[0027] First, the front end of the pull strap 3 is fixedly connected to the first support frame 1, and the rear end of the pull strap 3 passes through the limiting ring 402. When it is necessary to store the unfolded first support frame 1 and second support frame 2, the user only needs to hold the connecting strap 403 with one hand and pull the connecting strap 403 upward, so that the connecting strap 403 drives the pull strap 3 to move in conjunction with the limiting ring 402 and the mounting strap 401, together with the second support frame 2, along the direction of the first support frame 1, thereby making the first support frame 1 and the second support frame 2 move in opposite directions. In this way, the first support frame 1 and the second support frame 2 can be stored. As can be seen from the above, this application can quickly store the first support frame 1 and the second support frame 2 through mechanical simplification design. The operation method is time-saving and labor-saving, which not only improves the convenience of operation and use for users, but also reduces the difficulty and cost of subsequent manufacturing of this device.

[0028] Example 2

[0029] like Figure 1 , Figure 2 , Figure 3As shown, rollers 5 are fixed on the left and right sides of the bottom of the first support frame 1 and the second support frame 2, and the rear rollers 5 have a foot brake function. The rotating areas of the first support frame 1 and the second support frame 2 are connected by connecting rods 6. There are two connecting rods 6, and the two connecting rods 6 are designed to be parallel to each other. The upper end of the connecting rod 6 is provided with a pull rod 7. There are two pull rods 7, and the two pull rods 7 are designed to be parallel to each other. A locking mechanism 8 is provided between the connecting rod 6 and the pull rod 7. The locking mechanism 8 is rotatably connected to the connecting rod 6 and the pull rod 7. A push rod 9 is fixed between each pair of pull rods 7. The push rod 9 connects the two pull rods 7 into one unit. The front cross-section of the push rod 9 is designed with a U-shaped direction. A rotating part 10 is provided in the transition area between the connecting rod 6 and the first support frame 1 and the second support frame 2. A connecting belt 403 connects the two pull belts 3 into one unit. The connecting belt 403 and the pull belt 3 are made of soft material.

[0030] According to the operation method in Embodiment 1, when the first support frame 1 and the second support frame 2 are in the unfolded state, the user can push the push rod 9, which in turn causes the push rod 9 to drive the roller 5 and the device to move. When storing, the user pushes the push rod 9, which causes the push rod 9 and the pull rod 7 to rotate around the locking mechanism 8, thereby realizing the rotation and folding of the pull rod 7. Then, by using the locking mechanism 8, the folded pull rod 7 is locked. Afterwards, the user pulls the connecting strap 403 upward to fold the first support frame 1 and the second support frame 2. The rotating component 10 ensures the smoothness of the rotation and folding of the connecting rod 6. Through the above method, the overall volume of the device after storage is reduced, improving the convenience of the user in transporting it. The locking mechanism 8 and the rotating component 10 are existing components that come with the stroller, so this application does not need to describe the working principle of the locking mechanism 8 and the rotating component 10 in detail.

Claims

1. A stroller pull handle retraction mechanism comprising a first support frame (1) and a second support frame (2), characterized in that: The second support frame (2) is rotatably arranged at the rear end of the first support frame (1), the side view cross section of the first support frame (1) and the second support frame (2) is designed as a V shape, the left and right sides of the lower end of the outer part of the first support frame (1) are fixedly provided with pull belts (3), the outer wall of the second support frame (2) is provided with a limiting assembly (4), the limiting assembly (4) comprises mounting belts (401) fixedly arranged at the left and right sides of the lower end of the outer part of the second support frame (2), limiting rings (402) are fixedly arranged at the front end of the outer part of the mounting belts (401), the limiting rings (402) and the pull belts (3) are one-to-one corresponding, the limiting rings (402) are sleeved on the outer part of the pull belts (3), one end of the pull belts (3) away from the first support frame (1) passes through the position between the first support frame (1) and the second support frame (2), the rear ends of the two pull belts (3) are sewn with connecting belts (403), the connecting belts (403) are arranged at the upper end position of the transition area of the first support frame (1) and the second support frame (2), and the pull belts (3) and the transition area of the first support frame (1) and the second support frame (2) are designed as non-contact.

2. The child stroller handle retraction mechanism of claim 1, wherein: The bottom left and right sides of the first support frame (1) and the second support frame (2) are fixedly provided with rollers (5), and the rear end of the roller (5) has a foot brake function.

3. The child stroller handle stowing mechanism of claim 1, wherein: The rotating area of the first support frame (1) and the second support frame (2) is connected with connecting rods (6), the number of the connecting rods (6) is two, and the two connecting rods (6) are designed in parallel.

4. The child stroller handle stowing mechanism of claim 3, wherein: The upper end of the connecting rod (6) is provided with a pull rod (7), the number of the pull rod (7) is two, and the two pull rods (7) are designed in parallel.

5. The child stroller handle stowing mechanism of claim 4, wherein: The locking mechanism (8) is rotatably connected with the connecting rod (6) and the pull rod (7).

6. The child stroller handle stowing mechanism of claim 4, wherein: The push rod (9) connects the two pull rods (7) into one, and the front view cross section of the push rod (9) is designed as a U shape.

7. The child stroller handle stowing mechanism of claim 4, wherein: The connecting area of the connecting rod (6) and the first support frame (1) and the second support frame (2) is provided with a rotating piece (10).

8. The child stroller handle stowing mechanism of claim 1, wherein: The connecting belt (403) connects the two pull belts (3) into one, and the connecting belt (403) and the pull belt (3) are soft materials.

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