A push-pull dual folding frame

Abstract

The present application relates to the technology of folding frame, used to solve the problem that the child stroller can only carry a single child and is difficult to drag, in particular to a double folding frame for pushing and dragging, comprising a bottom support frame, a connecting rod is rotatably connected to one side of the upper surface of the bottom support frame through a rotating joint, and a pedal is connected to the outer wall of the bottom support frame near the middle position of the two rotating joints; the present application can place one child inside the stroller and place another child at the pedal position, so that the stroller does not occupy a large space and is not inconvenient to move when in use, and saves the user's economic expenditure; the user can connect the clasp between the telescopic sleeve and the supporting rod, so that the overall telescopic rod and telescopic sleeve can be adjusted in inclination angle through the rotation of the rotating connecting piece, so that the inclination angle can be adjusted at will when the user drags the child stroller by pulling the overall telescopic rod and telescopic sleeve, which is more labor-saving.

Description

Technical Field

[0001] This invention relates to folding frame technology, specifically a twin folding frame that can be used for both pushing and pulling. Background Technology

[0002] Strollers are toys used by children before they learn to walk. They are intended for toddlers who lack independent walking ability. Therefore, the first thing to pay attention to when purchasing one is safety. In addition to the sturdy structure of the stroller, the first thing to check is whether the stroller has a locking mechanism and a locking safety device.

[0003] In existing technology, strollers can only carry one child at a time, which is not very suitable for families with twins. Parents need to buy two strollers, which increases their financial expenses. Moreover, when going out for a trip, two strollers side by side take up a lot of space and are inconvenient to move. Strollers are mostly moved by pushing, which requires a lot of effort in rough terrain and can easily cause user fatigue. Furthermore, when dragging in reverse, the limited tilt angle of the stroller frame makes it difficult to move.

[0004] To address the aforementioned technical problems, this application proposes a solution. Summary of the Invention

[0005] The purpose of this invention is to provide a stroller frame that allows for the placement of one child inside and another child at the footrest, thus avoiding the space-consuming and inconvenient movement of the stroller and saving users money. The user can access the snap ring connection between the telescopic sleeve and the support rod, allowing the tilt angle of the entire structure to be adjusted by rotating the connecting piece. This enables the user to drag the stroller by pulling the entire structure, with the tilt angle adjustable at will. This solves the problem that strollers can only be carried by a single child and are difficult to drag, thus providing a dual-purpose push-and-pull twin folding stroller frame.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A folding twin bicycle frame for both push and pull uses includes a bottom support frame. A connecting rod is rotatably connected to one side of the upper surface of the bottom support frame via a rotating joint. A footboard is connected to the outer side wall of the bottom support frame near the middle position of the two rotating joints. An upper support frame is rotatably connected to the end of the bottom support frame away from the connecting rod via a rotating joint. A rotation limiting joint is rotatably connected to the middle position of the outer side wall of the upper support frame. A rotating sleeve is connected to the outer side wall of the upper support frame at the position corresponding to the upper end of the connecting rod. An upper frame is rotatably connected to the outer side wall of the upper support frame near the rotating sleeve. A connecting iron is rotatably connected to the outer side wall of the upper frame at the position corresponding to the rotation limiting joint.

[0008] In a preferred embodiment of the present invention, a support rod is connected at the middle position of the outer side wall of the upper frame corresponding to the position of the upper support frame. A limit clip is connected at the lower part of the outer side wall of the support rod near the position of the upper support frame. A rotating connector is rotatably connected to the lower end of the support rod via a rotating shaft. Telescopic sleeves are connected to both sides of the upper surface of the rotating connector near the support rod. A telescopic rod is slidably connected inside the telescopic sleeve.

[0009] In a preferred embodiment of the present invention, a retaining ring is connected above the outer wall of the telescopic sleeve at the position corresponding to the support rod, and a limiting sleeve is connected at the middle position of the outer wall of the upper support frame at the position corresponding to the support rod.

[0010] In a preferred embodiment of the present invention, the rotation limiting joint consists of two parts, left and right, which are rotatably connected to each other. Both parts have circular toothed grooves of the same shape and size in the middle. A circular toothed disc is slidably connected in the middle of the circular toothed grooves, and a telescopic spring is connected in the middle of the toothed disc.

[0011] In a preferred embodiment of the present invention, a cross-shaped hole is provided at the middle position of one side of the outer wall of the rotation restriction joint. The center of the cross-shaped hole is a circular hole. A compression button is slidably connected inside the cross-shaped hole. One end of the compression button located inside the cavity is rotatably connected to the circular toothed disc. A cross baffle is connected to one side of the outer wall of the compression button. The width of the cross baffle is the same as the width of the cross-shaped hole.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] When in use, the stroller allows for the placement of one child inside and another child at the footrest, preventing it from taking up too much space and making it inconvenient to move, while also saving the user money. The user can access the retaining ring connecting the telescopic sleeve and the support rod, allowing the tilt angle of the entire stroller to be adjusted by rotating the connecting piece. This makes it easier and less strenuous for the user to drag the stroller by pulling on both the telescopic sleeve and the support rod. Attached Figure Description

[0014] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a structural diagram of the main body of the present invention;

[0016] Figure 2 This is a diagram of the frame drive structure of the present invention;

[0017] Figure 3 This is a diagram of the vehicle frame towing structure of the present invention;

[0018] Figure 4 For the present invention Figure 3 Enlarged structural diagram of part A;

[0019] Figure 5 This is a folding structure diagram of the present invention;

[0020] In the diagram: 1. Bottom support frame; 2. Rotation limiting joint; 3. Telescopic sleeve; 4. Telescopic rod; 5. Upper support frame; 6. Upper frame; 7. Rotating sleeve; 8. Pedal; 9. Rotating joint; 10. Connecting rod; 11. Connecting iron; 12. Limiting sleeve; 13. Snap ring; 14. Rotating connector; 15. Support rod. Detailed Implementation

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example:

[0023] Please see Figure 1-5As shown, a folding twin bicycle frame that can be used for both pushing and pulling includes a bottom support frame 1. A connecting rod 10 is rotatably connected to one side of the upper surface of the bottom support frame 1 via a rotating joint 9. One end of the connecting rod 10 is rotatably connected to an upper support frame 5 via a rotating sleeve 7, and the other end is rotatably connected to the support frame 1 via a rotating joint 9. A footboard 8 is connected to the outer wall of the bottom support frame 1 near the middle of the two rotating joints 9. The end of the bottom support frame 1 away from the connecting rod 10 is rotatably connected to the upper support frame 5 via a rotating joint 9. A rotation limiting joint 2 is rotatably connected to the middle of the outer wall of the upper support frame 5, dividing the upper support frame 5 into upper and lower sections by the rotation limiting joint 2. A rotating sleeve 7 is connected to the outer wall of the upper section of the upper support frame 5 at the position corresponding to the upper end of the connecting rod 10. An upper frame 6 is rotatably connected to the outer wall of the upper section of the upper support frame 5 near the rotating sleeve 7. The upper frame 6 is a rectangular frame structure. A connecting iron 11 is rotatably connected to the outer wall of the upper frame 6 at the position corresponding to the rotation limiting joint 2. One end of the connecting iron 11 is rotatably connected to the upper frame 6, and the other end is rotatably connected to the rotation limiting joint 2. A support rod 15 is connected to the middle position of the outer wall of the upper frame 6 at the position corresponding to the upper support frame 5. The upper end of the support rod 15 is connected to the upper frame 6, and the lower end is fitted inside the limiting sleeve 12. A limiting clip is connected to the lower part of the outer wall of the support rod 15 near the position of the upper support frame 5. A rotating connector 14 is rotatably connected to the lower end of the support rod 15 through a rotating shaft. Telescopic sleeves 3 are connected to both sides of the upper surface of the rotating connector 14 near the support rod 15. A telescopic rod 4 is slidably connected inside the telescopic sleeve 3. A retaining ring 13 is connected to the upper part of the outer wall of the telescopic sleeve 3 at the position corresponding to the position of the support rod 15. A limiting sleeve 12 is connected to the middle position of the outer wall of the upper support frame 5 at the position corresponding to the position of the support rod 15.

[0024] The rotation limiting section 2 consists of two parts, left and right, which are rotatably connected to each other. Both parts have circular toothed grooves of the same shape and size in the middle. A circular toothed disc is slidably connected to the middle of the circular toothed groove. A telescopic spring is connected to the middle of the toothed disc. A cross hole is opened in the middle of one side of the outer wall of the rotation limiting section 2. The center of the cross hole is a circular hole. A squeeze button is slidably connected inside the cross hole. One end of the squeeze button is rotatably connected to the circular toothed disc inside the cavity. A cross baffle is connected to one side of the outer wall of the squeeze button. The width of the cross baffle is the same as the width of the cross hole.

[0025] When not folded, the twin folding stroller frame can accommodate a toddler by connecting the crib sling cloth inside the frame formed by the upper frame 6, bottom support frame 1 and upper support frame 5. Another toddler can stand at the footboard 8 position, and the toddler can hold onto the upper frame 6 for support, making it convenient for users to take twins out for play.

[0026] When the twin folding frame is folded, the telescopic springs are compressed and deformed by pressing the squeeze buttons at both ends. After the cross baffle connected to the outside of the squeeze button is inserted into the rotation restriction section 2 through the cross hole at the position of the rotation restriction section 2, the squeeze button is rotated so that the cross baffle is blocked by the inner wall of the cavity of the rotation restriction section 2 and cannot move outward. When the squeeze button is pressed inward, it pushes the circular toothed disc to move inward from the middle position of the rotation restriction section 2, and the rotation restriction on the outer part of the rotation restriction section 2 is released. The upper and lower sections of the upper support frame 5 can be folded. During the folding process of the upper section of the upper support frame 5, the traction connecting rod 10 moves and drives the upper frame 6 to move closer to the bottom support frame 1. The lower section of the upper support frame 5 is kept horizontal with the bottom support frame 1 by the rotation of the rotation joint 9. After the telescopic rod 4 is retracted into the telescopic sleeve 3, the support rod 15 slides inside the limit sleeve 12 and moves closer to the middle position of the bottom support frame 1 after the user squeezes the telescopic rod 4.

[0027] The push-pull structure of the twin folding frame is switched. The telescopic sleeve 3 is sleeved on the outside of the support rod 15 through the upper retaining ring 13. After the telescopic rod 4 slides out from the inside of the telescopic sleeve 3, the user can push the entire twin folding frame by pushing the telescopic sleeve 3 and the telescopic rod 4 as a whole. After the retaining ring 13 on the telescopic sleeve 3 separates from the support rod 15, the telescopic sleeve 3 and the telescopic rod 4 can rotate under the action of the rotating connector 14, which makes it easy to adjust the tilt angle of the telescopic sleeve 3 and the telescopic rod 4. The lower end of the support rod 15 is locked on the outside of the limiting sleeve 12 by the limiting card, so that the support rod 15 will not separate from the lower section of the upper support frame 5 when the telescopic sleeve 3 and the telescopic rod 4 are dragged.

[0028] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A twin folding bicycle frame that can be used for both pushing and pulling, characterized in that, The system includes a bottom support frame (1), on one side of the upper surface of the bottom support frame (1) being rotatably connected to a connecting rod (10) via a rotating joint (9). A foot pedal (8) is connected to the outer side wall of the bottom support frame (1) near the middle position of the two rotating joints (9). An upper support frame (5) is rotatably connected to the end of the bottom support frame (1) away from the connecting rod (10) via a rotating joint (9). A rotation limiting joint (2) is rotatably connected to the middle position of the outer side wall of the upper support frame (5). A rotating sleeve (7) is connected to the outer side wall of the upper support frame (5) at the position corresponding to the upper end of the connecting rod (10). An upper frame (6) is rotatably connected to the outer side wall of the upper support frame (5) near the position of the rotating sleeve (7). A connecting iron (11) is rotatably connected to the outer side wall of the upper frame (6) at the position corresponding to the position of the rotation limiting joint (2). A support rod (15) is connected at the middle position of the outer side wall of the upper frame (6) corresponding to the position of the upper support frame (5). A limit clip is connected at the lower part of the outer side wall of the support rod (15) near the position of the upper support frame (5). A rotating connector (14) is rotatably connected to the lower end of the support rod (15) through a rotating shaft. Telescopic sleeves (3) are connected to both sides of the upper surface of the rotating connector (14) near the support rod (15). A telescopic rod (4) is slidably connected inside the telescopic sleeve (3). A retaining ring (13) is connected above the outer wall of the telescopic sleeve (3) at the position corresponding to the support rod (15), and a limiting sleeve (12) is connected at the middle position of the outer wall of the upper support frame (5) at the position corresponding to the support rod (15).

2. The push-and-pull dual-use twin folding bicycle frame according to claim 1, characterized in that, The rotation limiting section (2) consists of two parts, left and right, which are rotatably connected to each other. The left and right parts are provided with circular toothed grooves of the same shape and size in the middle position. A circular toothed disc is slidably connected in the middle position of the circular toothed groove, and a telescopic spring is connected in the middle position of the toothed disc.

3. A push-and-pull dual-use twin folding bicycle frame according to claim 2, characterized in that, A cross-shaped hole is provided at the middle position of one side of the outer wall of the rotation restriction section (2). The center of the cross-shaped hole is a circular hole. A squeeze button is slidably connected inside the cross-shaped hole. One end of the squeeze button is rotatably connected to the circular toothed disc inside the cavity. A cross baffle is connected to one side of the outer wall of the squeeze button. The width of the cross baffle is the same as the width of the cross-shaped hole.

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