A folding stroller for infants and toddlers

Abstract

The application discloses a baby folding stroller and relates to the technical field of baby folding strollers. The baby folding stroller comprises an outer side frame, a handle is rotationally connected to the outer side frame, a rear wheel is arranged at one end of the bottom of the handle, a front wheel assembly is arranged at one end of the bottom of the outer side frame, a brake assembly is arranged at the bottom of the front wheel assembly, a time-delay reset assembly for adjusting the braking work of the brake assembly is arranged at the other end of the outer side frame, when a person leaves the rest handle, the vortex spring is used as a driving source through self-resetting, the meshing teeth are used for resetting the damper wheel and generating a damping effect, the reset time of the vortex spring is prolonged, the first screw rod is reset for a prolonged time, the braking is cancelled when the person holds the rest handle, the rest handle is reset for a time-delayed few seconds when the rest handle is sent, braking is generated, and danger is avoided.

Description

Technical Field

[0001] This invention relates to the field of folding stroller technology, specifically to a folding stroller for infants and children. Background Technology

[0002] A folding stroller is a stroller that can be folded to reduce its size. To make it easier to carry and store, lightweight strollers for various purposes are generally designed to be foldable.

[0003] While current strollers have braking systems to ensure baby safety, these passive brakes require manual activation. Most existing strollers use pedal-operated brakes, a design widely used. However, this design is prone to issues; people often forget to engage the brake. On gentle slopes, if a caregiver is in a hurry and forgets to press the brake, the stroller may become dangerously unstable, potentially moving and endangering the baby. Furthermore, this design is unstable when going uphill or downhill because the brake is applied with only one foot, making it difficult to lock the stroller securely. Therefore, we propose a folding baby stroller. Summary of the Invention

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

[0005] To achieve the above objectives, the present invention provides the following technical solution: a folding stroller for infants and toddlers, comprising an outer frame, a handle rotatably connected to the outer frame, a rear wheel at one bottom end of the handle, a front wheel assembly mounted at one bottom end of the outer frame, a brake assembly mounted at the bottom of the front wheel assembly, and a delayed reset assembly for adjusting the braking operation of the brake assembly mounted at the other end of the outer frame. A rest handle is mounted on the delayed reset assembly. The delayed reset assembly includes a connecting sheath at the end of the outer frame facing the rest handle, and first drive gears are fixedly mounted at both ends of the rest handle. The two connecting sheaths are opposite each other. Each of the connecting sheaths is equipped with a half-tooth meshing wheel, which is coaxial with the first drive gear. A spiral spring is installed on one side of the connecting sheath. A connecting plate is installed on the half-tooth meshing wheel, and a meshing tooth is installed at one end of the connecting plate. A retraction wheel is installed on the inner ring of the spiral spring, and the retraction wheel meshes with the meshing tooth. A cable assembly that meshes with the first drive gear is installed inside the connecting sheath. A limiting component for engaging the rest handle position is engaged on the outer ring of the retraction wheel. When the rest handle drives the first drive gear to rotate, the first drive gear drives the cable assembly to pull the front wheel assembly to release the brake, and at the same time, the limiting component engages the rest handle position.

[0006] Preferably, the limiting component includes a second drive gear mounted on the connecting sheath, a small ball mounted on the inner ring of the second drive gear, a first helical rod slidably mounted on the inner ring of the second drive gear, a first spring mounted on one end of the first helical rod, a cap mounted on one end of the first spring, the small ball and the first helical rod slidably connected, and a stop block mounted on the outer ring of one end of the first helical rod. Preferably, a first transition gear is mounted between the half-tooth meshing wheel and the second drive gear, a second transition gear meshes with the outer ring of the retraction wheel, a stabilizer is provided on the connecting sheath, a stop bar is slidably mounted on the stabilizer, and the stop bar meshes with the second transition gear.

[0007] Preferably, the pull cable assembly includes a connecting sheath with a transmission gear mounted near the lower part of the first drive gear, a sliding groove installed inside the connecting sheath next to the transmission gear, a pull bar slidably connected to the sliding groove, and the pull bar meshing with the transmission gear.

[0008] Preferably, the brake assembly includes a front wheel, on which a disc is mounted, a fixing groove is mounted on the inner side of the front wheel, a brake pad is slidably connected to the fixing groove, a stabilizing ring is mounted on one side of the fixing groove, a second helical rod is slidably mounted on the inner ring of the stabilizing ring, a stabilizing sheath is fixedly mounted on the stabilizing ring, a rotating sleeve is rotatably connected to the inner ring of the stabilizing sheath, a centering ball is mounted inside the rotating sleeve, and a pair of second springs are fixedly mounted on the side of the brake pad away from the stabilizing ring, the second springs being fixed to the fixing groove.

[0009] Preferably, each of the connecting sheaths is equipped with a stop bar.

[0010] Preferably, a hook is installed on the inside of each of the front wheel assemblies.

[0011] Preferably, the inner ring of the retraction wheel is made of soft rubber, and the meshing teeth and the retraction wheel are in rolling contact.

[0012] Preferably, the outer frame is hollow inside, one end of the pull bar is connected to a steel rope, and the rotating sleeve is connected to the steel rope.

[0013] Preferably, the outer frame consists of two rotatably connected sleeve rods.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This invention involves a person driving a rest handle to press down. During this pressing process, a first drive gear drives a transmission gear to rotate. When the transmission gear rotates, it engages a pull bar, which in turn moves a steel cable located inside the outer frame, causing the rotating sleeve to rotate. As the rotating sleeve is pulled and rotated by the steel cable, it drives a second helical rod to move linearly inside the rotating sleeve, thereby separating the brake pads and discs and canceling the braking effect. When the person leaves the rest handle, the self-reset of the spiral spring acts as the driving source, causing the meshing teeth to dampen the release wheel and prolong the reset time of the spiral spring. This, in turn, prolongs the reset time of the first helical rod, allowing the brake to be canceled when the person holds the rest handle. When the card is released from the rest handle, a few seconds of delay before the rest handle resets, generating braking and preventing danger.

[0016] This invention enables the first helical rod to block the rest handlebar during the downward pressing process driven by the user, making it easy for the user to push the entire frame without being disturbed by forces in any direction. Furthermore, the extended and reset function of the coil spring ensures that the user will not experience a strong reaction force in the opposite direction when holding the rest handlebar, thus achieving the purpose of saving effort.

[0017] This invention utilizes the interaction of multiple gears, resulting in strong continuity, high transmission efficiency, and excellent practical performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A;

[0020] Figure 3 This is a schematic diagram of the delayed reset component structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the limiting component structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the rope assembly structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0024] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point B;

[0025] Figure 8 This is a schematic diagram of the brake assembly structure of the present invention;

[0026] Figure 9 This is a top view of the overall structure of the present invention.

[0027] In the diagram: 1-Outer frame; 2-Rear wheel; 3-Front wheel assembly; 301-Hook; 4-Rest handle; 401-Stop lever; 5-Handle handle; 6-Delayed reset assembly; 7-Connecting sheath; 701-Half-tooth meshing wheel; 702-First transition gear; 8-First drive gear; 9-Transmission gear; 901-Slide groove; 902-Pulley; 10-Cap; 11-Second drive gear; 12-Whirlspring; 13-First spring; 1301-First helical rod; 14-Stop block; 15-Connecting plate; 16-Retraction wheel; 17-Meshing tooth; 178-Second transition gear; 18-Stop bar; 19-Stabilizer; 20-Disc; 21-Fixing groove; 22-Brake plate; 23-Stabilizing sheath; 24-Second helical rod; 25-Second spring; 26-Stabilizing ring; 27-Centering ball. Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0029] Please see Figure 1-9This invention provides a technical solution: a folding stroller for infants, comprising an outer frame 1, a handle 5 rotatably connected to the outer frame 1, a rear wheel 2 at one bottom end of the handle 5, a front wheel assembly 3 mounted at one bottom end of the outer frame 1, a brake assembly mounted at the bottom of the front wheel assembly 3, and a delayed reset assembly 6 for adjusting the braking operation of the brake assembly mounted at the other end of the outer frame 1. A rest handle 4 is mounted on the delayed reset assembly 6. The delayed reset assembly 6 includes a connecting sheath 7 at the end of the outer frame 1 facing the rest handle 4. First drive gears 8 are fixedly mounted at both ends of the rest handle 4. Half-tooth meshing wheels 701 are respectively mounted on opposite sides of the two connecting sheaths 7, and the half-tooth meshing wheels 701 and the first drive gears 8 are coaxial. A spiral spring 12 is mounted on one side of the connecting sheath 7. A connecting plate 15 is mounted on the half-tooth meshing wheel 701, and a meshing tooth 17 is mounted at one end of the connecting plate 15. A retraction wheel 16 is mounted on the inner ring of the spiral spring 12. Furthermore, the retraction wheel 16 and the meshing tooth 17 mesh, and a pull cable assembly that meshes with the first drive gear 8 is installed inside the connecting sheath 7. The outer ring of the retraction wheel 16 meshes with a limiting component for engaging the position of the rest handle 4. The inner ring of the retraction wheel 16 is made of soft rubber, and the meshing tooth 17 and the retraction wheel 16 are in rolling contact. When the rest handle 4 drives the first drive gear 8 to rotate, the first drive gear 8 pulls the front wheel assembly 3 to release the brake through rotation, and at the same time, the limiting component engages the position of the rest handle 4. First, when a person holds the rest handle 4, the rest handle 4 needs to be pressed down. When the rest handle 4 is pressed down, it can simultaneously drive the limiting component and the pull cable assembly to work. When the rest handle 4 drives the first drive gear 8 to rotate on the connecting sheath 7, it can pull the pull cable assembly to pull the rope inside the outer frame 1, and then cancel the braking effect of the brake assembly. At the same time as the first drive gear 8 rotates, it drives the half-tooth meshing wheel 701 and the connecting plate 15. When the connecting plate 15 rotates coaxially, it drives the meshing teeth 17 to rotate counterclockwise towards the personnel. The outer ring of the meshing teeth 17 abuts against the inner ring of the withdrawal wheel 16. When the withdrawal wheel 16 rotates, it can drive the meshing teeth 17 to rotate together. This allows the spiral spring 12 to rotate inward and tighten along with the withdrawal wheel 16. When the spiral spring 12 releases force, it expands outward, causing the inner ring of the withdrawal wheel 16 to engage with the teeth (see...). Figure 3 As the retractor wheel 16 gradually moves radially away from the outer ring of the meshing teeth 17, it rotates gradually on the outer ring of the meshing teeth 17. This reduces the contact area between the retractor wheel 16 and the meshing teeth 17, facilitating the reset of the spiral spring 12. After the spiral spring 12 resets, the soft material on the inner ring of the retractor wheel 16 resets itself. During this process, the limiting component first locks the rest handlebar 4, and then the spiral spring 12 locks the limiting component during the tightening process to prevent it from resetting. This allows the rest handlebar 4 to reset after a few seconds of delay when it is locked, making it easier for people to push the frame.

[0030] Specifically, the limiting assembly includes a second drive gear 11 mounted on the connecting sheath 7, a small ball mounted on the inner ring of the second drive gear 11, a first spiral rod 1301 slidably mounted on the inner ring of the second drive gear 11, a first spring 13 mounted on one end of the first spiral rod 1301, a cover 10 mounted on one end of the first spring 13, the small ball and the first spiral rod 1301 slidably connected, a stop block 14 mounted on the outer ring of one end of the first spiral rod 1301, a first transition gear 702 mounted between the half-tooth meshing wheel 701 and the second drive gear 11, a second transition gear 178 meshing on the outer ring of the retraction wheel 16, a stabilizer 19 provided on the connecting sheath 7, a stop bar 18 slidably mounted on the stabilizer 19, the stop bar 18 meshing with the second transition gear 178, when the rest handle 4 is pressed down, the half-tooth meshing wheel 701 rotates, and the half-tooth meshing wheel 701 rotates. After rotating a certain angle, the half-tooth meshing wheel 701 and the first transition gear 702 mesh. Then, until the rest handle 4 is pressed down to its limit, the first transition gear 702 drives the second drive gear 11 to rotate. When the second drive gear 11 rotates, it drives the first spiral rod 1301 to move linearly towards the connecting sheath 7 inside, finally locking the end of the rest handle 4. At the same time, the retraction wheel 16 rotates, driving the second transition gear 178 to rotate (the shaft of the second transition gear 178 is fixed on the connecting sheath 7). When the second transition gear 178 rotates, it drives the stop bar 18 to block the stop block 14 to prevent the first spiral rod 1301 from locking the rest handle 4 due to the action of the first spring 13. Then, when the rest handle 4 is released, it is reset by the delay of the spiral spring 12, so that the first spiral rod 1301 leaves the rest handle 4. The rest handle 4 is reset to the origin under the joint guidance of the rope and the spiral spring 12.

[0031] The cable assembly includes a connecting sheath 7 with a transmission gear 9 mounted near the first drive gear 8 below it. Inside the connecting sheath 7, next to the transmission gear 9, a sliding groove 901 is installed. A pull bar 902 is slidably connected to the sliding groove 901, and the pull bar 902 meshes with the transmission gear 9. When the first drive gear 8 rotates, it drives the transmission gear to rotate, so that the rotation direction of the transmission gear 9 and the rest handle are the same, allowing the pull bar 902 to pull the cable.

[0032] Furthermore, the brake assembly includes a front wheel with a disc 20 mounted on it. A fixing groove 21 is installed on the inner side of the front wheel, and a brake pad 22 (containing a friction block) is slidably connected to the fixing groove 21. A stabilizing ring 26 is installed on one side of the fixing groove 21, and a second helical rod 24 is slidably installed on the inner ring of the stabilizing ring 26. A stabilizing sheath 23 is fixedly installed on the stabilizing sheath 23, and a rotating sleeve is rotatably connected to the inner ring of the stabilizing sheath 23. A centering ball 27 is installed inside the rotating sleeve. A pair of second springs 25 are fixedly installed on the side of the brake pad 22 away from the stabilizing ring 26. The second springs 25 are fixed on the fixing groove 21. When the rope is pulled, the rotating sleeve rotates. When the rotating sleeve rotates, the centering ball 27 drives the second helical rod 24 to move linearly within the inner ring of the rotating sleeve, pulling the brake pad 22 away from the disc 20 and canceling the braking effect. When the brake lever 4 is reset, the brake pad 22 contacts the disc 20 to generate braking.

[0033] Each of the connecting sheaths 7 is equipped with a stop bar 401 to prevent the rest handle 4 from being over-reset.

[0034] Each of the aforementioned front wheel assemblies 3 has a hook 301 installed on its inner side to assist in the direction of the rope traction, which is conducive to the rope pulling the rotating sleeve.

[0035] The outer frame 1 is hollow inside. One end of the pull bar 902 is connected to a steel rope. The rotating sleeve and the steel rope are connected together. The design uses a rope to connect the rest handle 4 and the brake assembly. The outer frame 1 is hollow inside with internal wiring to prevent corrosion and rust, and to prevent external forces from pulling the rope and damaging the brake assembly or the rest handle 4.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A baby folding stroller, comprising an outer frame (1), a handle (5) is rotatably connected to the outer frame (1), a rear wheel (2) is arranged at the bottom end of the handle (5), a front wheel assembly (3) is mounted at the bottom end of the outer frame (1), characterized in that: The front wheel assembly (3) bottom is provided with a brake assembly, the other end of the outer frame (1) is provided with a delay reset assembly (6) for adjusting the brake assembly braking work, the delay reset assembly (6) is provided with a rest handle (4), the delay reset assembly (6) comprises a connecting sheath (7) provided on the outer frame (1) towards the rest handle (4) end, the rest handle (4) two ends are fixedly provided with a first drive gear (8), the opposite sides of the two connecting sheaths (7) are respectively provided with a half-tooth engaging wheel (701), the half-tooth engaging wheel (701) and the first drive gear (8) are coaxial, one side of the connecting sheath (7) is provided with a vortex spring (12), the half-tooth engaging wheel (701) is provided with a connecting plate (15), one end of the connecting plate (15) is provided with a meshing tooth (17), the vortex spring (12) inner ring is provided with a reset wheel (16), the reset wheel (16) and the meshing tooth (17) are engaged, the connecting sheath (7) is internally provided with a pull wire assembly engaged with the first drive gear (8), the reset wheel (16) outer ring is engaged with a limiting assembly for clamping the position of the rest handle (4). When the rest handle (4) drives the first drive gear (8) to rotate, the first drive gear (8) drives the pull wire assembly to pull the front wheel assembly (3) brake release through rotation, and the limiting assembly clamps the position of the rest handle (4).

2. The baby stroller as claimed in claim 1, wherein: The limiting assembly comprises a second drive gear (11) provided on the connecting sheath (7), a small ball provided in the second drive gear (11) inner ring, a first screw rod (1301) slidingly provided in the second drive gear (11) inner ring, a first spring (13) provided on one end of the first screw rod (1301), a cover (10) provided on one end of the first spring (13), the small ball and the first screw rod (1301) are slidingly connected, and a stop block (14) is provided on the first screw rod (1301) outer ring.

3. The baby stroller of claim 2, wherein: A first transition gear (702) is provided between the half-tooth engaging wheel (701) and the second drive gear (11), a second transition gear (178) is engaged with the reset wheel (16) outer ring, a stabilizer (19) is provided on the connecting sheath (7), a blocking strip (18) is slidingly provided on the stabilizer (19), and the blocking strip (18) and the second transition gear (178) are engaged.

4. The baby stroller of claim 1, wherein: The pull wire assembly comprises a transmission gear (9) provided on the connecting sheath (7) below the first drive gear (8), a sliding groove (901) provided in the connecting sheath (7) beside the transmission gear (9), and a pull strip (902) slidingly connected on the sliding groove (901), and the pull strip (902) and the transmission gear (9) are engaged together.

5. The baby stroller as claimed in claim 4, wherein: Said brake assembly includes front wheels, a disc (20) is installed on the front wheels, a fixed slot (21) is installed inside the front wheels, a leading sheet (22) is slidably connected on the fixed slot (21), a stabilizing ring (26) is installed on one side of the fixed slot (21), a second spiral rod (24) is slidably installed in the inner ring of the stabilizing ring (26), a stabilizing sheath (23) is fixedly installed on the stabilizing ring (26), a rotating sleeve is rotatably connected in the inner ring of the stabilizing sheath (23), a centering ball (27) is installed inside the rotating sleeve, a pair of second springs (25) are fixedly installed on one side of the leading sheet (22) away from the stabilizing ring (26), and the second springs (25) are fixed on the fixed slot (21).

6. The baby stroller of claim 1, wherein: A stop rod (401) is installed on each of the connecting sheaths (7).

7. The baby stroller of claim 1, wherein: A lifting hook (301) is installed inside each of the front wheel assemblies (3).

8. The baby stroller of claim 1, wherein: The inner ring of the withdrawal wheel (16) is made of soft rubber, and the meshing teeth (17) and the withdrawal wheel (16) are in rolling contact.

9. The baby stroller as claimed in claim 5, wherein: The inside of the outer frame (1) is hollow, one end of the stay (902) is connected with a steel rope, and the rotating sleeve and the steel rope are connected together.

10. The baby stroller of claim 1, wherein: The outer frame (1) is composed of two rotatingly connected sleeve rods.

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