Novel baby stroller

Abstract

The utility model discloses a novel baby stroller which comprises a front stroller set, a rear stroller set and a stroller rod, a T-shaped frame is fixed to the top of the rear stroller set, the two ends of the T-shaped frame are hinged to the front stroller set and a stroller rod set respectively, a U-shaped rod is hinged to the top of the stroller rod, and the two ends of the U-shaped rod are connected with folding mechanisms through joints. The folding mechanism is rotationally connected with the front trolley set and the rear trolley set, a locking assembly is arranged in the joint, an unlocking mechanism is arranged at the top of the U-shaped rod, a traction assembly is arranged in the U-shaped rod and comprises an inhaul cable, a protective sleeve and a fixing block, the inhaul cable is sleeved with the protective sleeve, and the inhaul cable slides along the protective sleeve; the length of the protective sleeve is larger than the length from the unlocking mechanism to the locking assembly. The situation that the unlocking sensitivity is reduced due to tensioning and extending of the inhaul cable is avoided, the traction assembly can be suitable for pipe fittings of different lengths, and therefore the problem of adaptability is solved.

Description

Technical Field

[0001] This utility model relates to the field of baby strollers, specifically to a new type of baby stroller. Background Technology

[0002] Currently, stroller unlocking mechanisms use a pull cord to unlock the joint. The length of the tube from the unlocking mechanism to the joint is the same as the length of the pull cord. Since there are multiple models of the same stroller type, the tube length varies. Previously, a traction pull cord was used, which was tensioned inside the tube. Different tube lengths required different length pull cords, making manufacturing cumbersome. Furthermore, over time, the pull cord would stretch due to tension, reducing the sensitivity of the unlocking mechanism to the joint. Additionally, modern stroller handles generally need to be telescopic, and since the pull cord needs to be tensioned, the aforementioned pull cord is unsuitable for use with telescopic handles. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this utility model proposes a novel baby stroller with a pull cord that is adaptable to changes in the length of the tube and does not affect the unlocking sensitivity during long-term use.

[0004] To achieve the above objectives, the present invention provides the following solution: a novel baby stroller, comprising a front stroller assembly, a rear stroller assembly, and a stroller handle. A T-shaped frame is fixed to the top of the rear stroller assembly, and the two ends of the T-shaped frame are respectively hinged to the front stroller assembly and the stroller handle assembly. A U-shaped rod is hinged to the top of the stroller handle, and a folding mechanism is connected to both ends of the U-shaped rod via joints. The folding mechanism is rotatably connected to the front stroller assembly and the rear stroller assembly, and a locking component is provided within the joint.

[0005] An unlocking mechanism is provided at the top of the U-shaped rod, and a traction component is installed inside the U-shaped rod. One end of the traction component is connected to the unlocking mechanism, and the other end of the traction component extends into the joint to unlock. The traction component includes a cable, a protective sleeve, and a fixing block. The protective sleeve is fitted on the cable and the cable slides along the protective sleeve. The length of the protective sleeve is longer than the length from the unlocking mechanism to the locking component. Both ends of the protective sleeve are fixed with retaining rings, and each retaining ring is locked onto a corresponding fixing block. The fixing block is installed inside the U-shaped rod. The two ends of the cable extending out of the protective sleeve are respectively fixed to the unlocking mechanism and the locking component.

[0006] Preferably, the fixing block has a slot for locking the locking ring, and the fixing blocks on both sides of the slot have grooves for the protective sleeve and the cable to pass through.

[0007] Preferably, fixing blocks are inserted into both ends of the U-shaped rod, the outer wall of the fixing blocks is in contact with the inner wall of the U-shaped rod, and outwardly extending abutments are fixed on the fixing blocks; a notch is opened in the middle section of the U-shaped rod for the fixing blocks to be inserted into the U-shaped rod, and the fixing blocks are locked in the notch.

[0008] Preferably, a seat is installed on the folding mechanism and the trolley frame by rotational connection, a telescopic component is provided at the bottom of the seat, and a handle is installed on the telescopic component. When the seat is folded, the handle of the telescopic component faces upward.

[0009] Preferably, the joint includes two rotating seats and two rotating shafts that fit together. A through hole is opened at the center of the rotating seat, and a rotating shaft extends into the through hole. A cavity is opened on the splicing surface of the two rotating seats. The locking component includes a toothed groove and a gear. A toothed groove distributed in a ring array is opened on the inner circumference of the cavity. A gear that moves on the rotating shaft is sleeved on the rotating shaft in the cavity, and the gear meshes with the toothed groove. A movable collar is also sleeved on the rotating shaft. A movable sleeve is sleeved on the rotating shaft. A helical inclined surface is provided on the inner wall of the cavity of one of the rotating seats. A groove is opened on the end face of the movable sleeve facing the helical inclined surface. A spring is provided between the inner wall of the other rotating seat and the gear. A cable is connected to the movable sleeve.

[0010] Preferably, the unlocking mechanism includes an unlocking block, a mounting block, and a slider. A notch is provided on the outer wall of the top of the U-shaped rod for the unlocking block to extend into. The mounting block is installed inside the U-shaped rod, and two symmetrical elongated holes are provided on the mounting block. A slider is embedded in each elongated hole and is connected to a cable. The unlocking block extends into the U-shaped rod with a V-shaped surface, which presses against the slider. A spring-loaded component is provided between the unlocking block and the U-shaped rod, which pushes the unlocking block outward from the U-shaped rod.

[0011] Preferably, the rebound assembly includes a lifting rod and an inclined block, wherein a through hole is opened on the mounting block, a lifting rod is inserted into the through hole, a spring is provided between the lifting rod and the U-shaped rod, a limit groove is opened in the middle section of the lifting rod, and an inclined block extending into the limit groove is fixed on the unlocking block, and the inclined surface of the inclined block presses against the limit groove.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] To avoid reduced unlocking sensitivity due to cable tension and extension, the traction component can be adapted to pipes of different lengths, thus avoiding compatibility issues.

[0014] The telescopic components and handles allow the stroller to be moved while folded. Attached Figure Description

[0015] Figure 1 This is the right view of the present invention.

[0016] Figure 2 This is a top view of the present invention.

[0017] Figure 3 This is a three-dimensional view of the present invention after it has been cut in half.

[0018] Figure 4 This is a schematic diagram of the U-shaped rod of this utility model.

[0019] Figure 5 This is a schematic diagram of the cable and protective sleeve of this utility model.

[0020] Figure 6 This is a schematic diagram of the unlocking mechanism of this utility model.

[0021] Figure 7 This is a schematic diagram of the fixing block and the end of the U-shaped rod of this utility model.

[0022] Figure 8 This is a schematic diagram of the unlocking block and the mounting block of this utility model.

[0023] Figure 9 This is a schematic diagram of the slider of this utility model.

[0024] Figure 10 This is a schematic diagram of the movable collar of this utility model.

[0025] Figure 11 This is a schematic diagram of the joint of this utility model.

[0026] Among them, 1. Front vehicle assembly, 2. Rear vehicle assembly, 3. Push rod, 4. T-shaped frame, 5. U-shaped rod, 6. Folding mechanism, 7. Joint, 8. Locking assembly, 9. Unlocking mechanism, 10. Traction assembly, 11. Cable, 12. Protective sleeve, 13. Fixing block, 14. Snap ring, 15. Snap groove, 16. Wire groove, 17. Abutment block, 18. Seat, 19. Telescopic assembly, 20. Handle, 21. Rotating seat, 22. Gear groove, 23. Gear, 24. Moving collar, 25. Spiral inclined surface, 26. Unlocking block, 27. Mounting block, 28. Slider, 29. Long strip hole, 30. Springback assembly, 31. Lifting rod, 32. Inclined block, 33. Limiting groove, 34. Snap block. Detailed Implementation

[0027] The present invention will now be further described with reference to the accompanying drawings.

[0028] like Figure 1-11As shown, a novel baby stroller includes a front frame assembly 1 (the front frame assembly 1 consists of front wheels mounted on the front frame), a rear frame assembly 2 (the rear frame assembly 2 consists of rear wheels mounted on the rear frame), and a push rod 3. A T-shaped frame 4 is fixed to the top of the rear frame assembly 2, and the two ends of the T-shaped frame 4 are hinged to the front frame assembly 1 and the push rod 3, respectively, thus achieving folding. A U-shaped rod 5 is hinged to the top of the push rod 3, and a folding mechanism 6 (including a double-link assembly, a folding rod, and a pull tab) is connected to both ends of the U-shaped rod 5 via joints 7. The folding mechanism 6 is rotatably connected to the front vehicle group 1 and the rear vehicle group 2 respectively. A locking component 8 is provided in the joint 7. When the U-shaped rod 5 is unlocked from the joint 7 of the folding mechanism 6, the double linkage assembly consists of two connecting rods that are hinged to each other. The two ends of the double linkage assembly are respectively hinged to the front vehicle group and the rear vehicle group 2. Folding rods are connected to both ends of the U-shaped rod 5 through the joint 7. The bottom of the folding rod is hinged to the rear vehicle group 2. The upper end of the folding rod and the rear vehicle group 2 are hinged to the double linkage assembly and the same pull piece, thus achieving folding.

[0029] An unlocking mechanism 9 is provided at the top of the U-shaped rod 5. A traction component 10 is installed inside the U-shaped rod 5. One end of the traction component 10 is connected to the unlocking mechanism 9, and the other end of the traction component 10 extends into the joint 7 for unlocking. The traction component 10 includes a cable 11, a protective sleeve 12, and a fixing block 13. The protective sleeve 12 is fitted onto the cable 11, and the cable 11 slides along the protective sleeve 12. The length of the protective sleeve 12 is longer than the length from the unlocking mechanism 9 to the locking component 8, meaning that the protective sleeve 12 is coiled inside the U-shaped rod 5. Circular retaining rings 14 are fixed to both ends of the protective sleeve 12 by bolts. Each retaining ring 14 is engaged with a corresponding fixing block 13. The fixing block 13 is installed inside the U-shaped rod 5. The two ends of the cable extending out of the protective sleeve 12 are respectively fixed to the unlocking mechanism 9 and the locking component 8. Each traction component 10 is provided with two fixing blocks 13, which are fixed to the U-shaped rod 5. 3. Near joint 7, another fixing block 13 is near unlocking mechanism 9. The retaining rings 14 at both ends of protective sleeve 12 are respectively locked onto the corresponding fixing blocks 13. In this way, when pulling cable 11, due to the action of fixing blocks 13, the two ends of protective sleeve 12 do not move. When unlocking, press unlocking mechanism 9, unlocking mechanism pulls cable 11, cable 11 moves inside protective sleeve 12, and the other end of cable 11 unlocks joint 7. Since protective sleeve 12 is longer than the tube of U-shaped rod 5, cable 11 is in a slack state. This will not produce a large length extension during long-term use, so it will not affect the sensitivity of cable 11 to unlock joint 7. At the same time, since the traction component 10 is relatively long, it does not need to be tensioned inside the tube. In this way, the tube can be stretched and contracted without affecting unlocking. It can also be used for multiple tube types shorter than protective sleeve 12, so there is no need to customize the length of cable 11 according to the tube type.

[0030] The fixing block 13 has a slot 15 for locking the locking ring 14. On both sides of the slot 15, the fixing block 13 has grooves 16 for the protective sleeve 12 and the pull cable 11 to pass through. That is, there is a downward recessed slot 15 on the front of the fixing block 13, and grooves 16 on the front of the left and right sides of the slot 15. The locking ring 14 of the protective sleeve 12 is locked in the slot 15, so the protective sleeve 12 cannot move back and forth. The protective sleeve 12 is locked in the groove 16. The two ends of the pull cable 11 pass through the groove 16 and are connected to the unlocking mechanism 9 and the locking component 8. When unlocking is required, when the unlocking mechanism 9 pulls the pull cable 11, the left end of the pull cable 11 extends out of the protective sleeve 12 by the same length as the right end of the pull cable 11 retracts into the protective sleeve 12. This realizes that the pull cable 11 pulls the locking component 8 to unlock.

[0031] Since there are two sets of joints 7, two sets of traction components 10 are also required, i.e., there are two cables 11. Fixing blocks 13 are inserted into both ends of the U-shaped rod 5. The outer wall of the fixing block 13 fits against the inner wall of the U-shaped rod 5. An outwardly extending abutment block 17 is fixed on the fixing block 13 by integral injection molding. The abutment block 17 limits the position of the fixing block 13 and prevents the fixing blocks 13 at both ends of the U-shaped rod 5 from retracting into the U-shaped rod 5. A bolt passes through the end of the U-shaped rod 5 and locks it through the fixing block 13. A notch is opened in the middle section of the U-shaped rod 5 for the fixing blocks 13 to be inserted into the U-shaped rod 5. Two fixing blocks 13 are inserted into the notch of the U-shaped rod 5. The fixing blocks 13 are located at both ends of the unlocking mechanism 9. A bolt is inserted into the middle section of the U-shaped rod 5 and passes through the fixing block 13 located in the middle section of the U-shaped rod 5. This completes the fixing of the fixing block 13 and prevents the fixing block 13 from moving during use.

[0032] A seat 18 is mounted on the folding mechanism 6 and the trolley frame via a rotatable connection. The rear end of the seat 18 is riveted to the folding linkage via a movable riveting connection. A connecting piece is mounted on the front end of the seat 18 via a movable riveting connection. An armrest is mounted on the inner wall of the trolley frame via a rotatable connection. A rotating block (a disc) is fixed to the inner wall of the armrest frame via bolts. Rotating blocks are also mounted on both ends of the armrest via bolts. A pin is fixed at the center of the rotating block of the armrest. A pin hole is opened at the center of the rotating block of the armrest frame for the pin to insert, thus enabling the rotation of the armrest. The other end of the connecting piece is mounted on the rotating armrest via bolts. On seat 21, the connecting piece is eccentrically connected to the rotating seat 21. When the folding linkage is folded, the front end of seat 18 swings upward, and the armrest swings and moves closer to the push arm frame. A telescopic component 19 is fixed at the bottom of seat 18 by bolts. The telescopic component 19 is a telescopic rod with multiple inner and outer rods nested together, which realizes the telescopic extension and retraction of the telescopic component 19. A handle 20 is installed on the inner rod of the telescopic component 19 by bolts. When seat 18 is folded, the handle 20 of the telescopic component 19 faces upward. When it is necessary to push the folded frame to move, pull the handle 20 upward, which pushes the folded frame to move. This can realize the movement of the folded frame.

[0033] Joint 7 includes two rotating seats 21, with two rotating shafts fitting together. A through hole is formed at the center of each rotating seat 21, and a rotating shaft extends into the through hole, thus enabling the rotation of the two rotating seats 21. Cavities are formed on the splicing surfaces of the two rotating seats 21. The locking assembly 8 includes toothed grooves 22 and gears 23. Toothed grooves 22 are arranged in a ring array on the inner circumferential wall of the cavity of each rotating seat 21. A gear 23 is fitted on the rotating shaft inside the cavity, and the gear 23 meshes with the toothed grooves 22. A movable collar 24 is also fitted on the rotating shaft, and a movable sleeve is fitted on the rotating shaft, which moves on the rotating seat 21. A helical inclined surface 25 is fixed on the inner wall of the cavity of the outer rotating seat 21 by integral injection molding. An inclined groove is formed on the end face of the movable sleeve facing the helical inclined surface 25. A spring is fitted on the rotating shaft between the inner wall of the inner rotating seat 21 and the gear 23, which is in contact with the spiral inclined surface 25. The cable 11 is connected to the movable sleeve. An L-shaped groove is opened on the outer circumference of the movable sleeve. A locking block 34 is fixed to one end of the cable 11 by welding. The locking block 34 and the cable 11 are inserted into the L-shaped groove of the movable sleeve. The cable 11 is used to pull the movable sleeve to rotate. When the movable sleeve rotates, the spiral inclined surface 25 pushes the movable sleeve inward, which pushes the gear 23 inward. This separates the gear 23 from the outer rotating seat 21, allowing the rotating seats 21 to rotate relative to each other. When the cable 11 loses tension, the spring pushes the gear 23 outward and locks it into the outer rotating seat 21, thus locking the joint 7 by the locking assembly 8.

[0034] The unlocking mechanism 9 includes an unlocking block 26, a mounting block 27, and a slider 28. A notch is provided on the top outer wall of the U-shaped rod 5 for the unlocking block 26 to extend into. The unlocking block 26 slides inside the U-shaped rod 5. The mounting block 27 is installed inside the U-shaped rod 5 by bolts. Two symmetrical elongated holes 29 are provided on the mounting block 27, arranged symmetrically on both sides. A slider 28 is embedded in each elongated hole 29 and slides within it. The slider 28 is connected to the pull cable 11 (pull cable and slider 28). One end of the connection is also fixed with a locking block 34, and the side wall of the slider 28 is also provided with a groove for the locking block 34 to be inserted. When the unlocking block 26 extends into the U-shaped rod 5, it forms a V-shaped surface. The V-shaped surface presses on the slider 28. When the unlocking block 26 is pressed into the U-shaped rod 5, the sliders 28 move closer to each other along the V-shaped surface. In this way, the slider 28 pulls the cable 11, and the cable 11 pulls the locking component 8 to unlock. A spring-loaded component 30 is provided between the unlocking block 26 and the U-shaped rod 5. The spring-loaded component 30 pushes the unlocking block 26 outward from the U-shaped rod 5.

[0035] The rebound assembly 30 includes a lifting rod 31 and a wedge block 32. A through hole is formed in the mounting block 27, and the lifting rod 31 is inserted into the through hole, allowing it to rise and fall within the hole. The lifting rod 31 is located inside the U-shaped rod 5. A hole is formed at the bottom of the lifting rod 31, and a spring is inserted into the hole. The spring abuts against the inner wall of the U-shaped rod 5, pushing the lifting rod 31 upwards. A limit groove 33 is formed in the middle section of the lifting rod 31. A wedge block 32, extending into the limit groove 33, is integrally formed (injection molded) on the unlocking block 26. The bottom of the wedge block 32 is inclined. The inclined surface of 32 presses against the bottom of the limiting groove 33. When the unlocking block 26 is pressed, the unlocking block 26 moves inward toward the U-shaped rod 5. This causes the inclined surface to press the lifting rod 31 downward, while the V-shaped surface presses the slider 28 toward the center. This causes the slider 28 to pull the cable 11 to unlock the locking assembly 8 and the joint 7. When the pressing of the unlocking block 26 stops, the lifting rod 31 moves upward, and the limiting groove 33 also rises accordingly. The limiting pressure squeezes the inclined surface of the inclined block 32, and also presses the inclined block 32 and the unlocking block 26 outward, thus realizing the return of the unlocking block 26 from the U-shaped rod 5.

Claims

1. A novel baby stroller, comprising a front stroller assembly, a rear stroller assembly, and a stroller handle, wherein a T-shaped frame is fixed to the top of the rear stroller assembly, the two ends of the T-shaped frame are respectively hinged to the front stroller assembly and the stroller handle assembly, a U-shaped rod is hinged to the top of the stroller handle, and a folding mechanism is connected to both ends of the U-shaped rod via joints, the folding mechanism being rotatably connected to the front stroller assembly and the rear stroller assembly respectively, and a locking component is provided in the joint; Its features are, An unlocking mechanism is provided at the top of the U-shaped rod, and a traction component is installed inside the U-shaped rod. One end of the traction component is connected to the unlocking mechanism, and the other end of the traction component extends into the joint to unlock. The traction component includes a cable, a protective sleeve, and a fixing block. The protective sleeve is fitted on the cable and the cable slides along the protective sleeve. The length of the protective sleeve is longer than the length from the unlocking mechanism to the locking component. Both ends of the protective sleeve are fixed with retaining rings, and each retaining ring is locked onto a corresponding fixing block. The fixing block is installed inside the U-shaped rod. The two ends of the cable extending out of the protective sleeve are respectively fixed to the unlocking mechanism and the locking component.

2. The novel baby stroller according to claim 1, characterized in that, The fixing block has a slot for locking the locking ring, and on both sides of the slot, there are grooves for the protective sleeve and the cable to pass through.

3. A novel baby stroller according to claim 2, characterized in that, The two ends of the U-shaped rod are fitted with fixing blocks, the outer wall of the fixing blocks is fitted with the inner wall of the U-shaped rod, and outwardly extending abutments are fixed on the fixing blocks; a notch is opened in the middle section of the U-shaped rod for the fixing blocks to be fitted into the U-shaped rod, and the fixing blocks are fitted into the notch.

4. A novel baby stroller according to claim 3, characterized in that, A seat is mounted on the folding mechanism and the trolley frame by rotation. A telescopic component is located at the bottom of the seat, and a handle is mounted on the telescopic component. When the seat is folded, the handle of the telescopic component faces upward.

5. A novel baby stroller according to claim 4, characterized in that, The joint includes two rotating seats and two rotating shafts that fit together. A through hole is opened at the center of the rotating seat, and a rotating shaft extends into the through hole. Cavities are opened on the splicing surfaces of the two rotating seats. The locking assembly includes tooth grooves and gears. Tooth grooves are arranged in a ring array on the inner circumference of the cavity. A gear that moves on the rotating shaft is sleeved on the rotating shaft in the cavity, and the gear meshes with the tooth grooves. A movable collar is also sleeved on the rotating shaft. A movable sleeve is sleeved on the rotating shaft. A helical inclined surface is provided on the inner wall of the cavity of one of the rotating seats. A groove is opened on the end face of the movable sleeve facing the helical inclined surface. A spring is provided between the inner wall of the other rotating seat and the gear. A cable is connected to the movable sleeve.

6. A novel baby stroller according to claim 5, characterized in that, The unlocking mechanism includes an unlocking block, a mounting block, and a slider. A notch is provided on the outer wall of the top of the U-shaped rod for the unlocking block to extend into. The mounting block is installed inside the U-shaped rod, and two symmetrical elongated holes are provided on the mounting block. A slider is embedded in each elongated hole and is connected to a cable. The unlocking block extends into the U-shaped rod with a V-shaped surface, which presses against the slider. A spring-loaded component is provided between the unlocking block and the U-shaped rod, which pushes the unlocking block outward from the U-shaped rod.

7. A novel baby stroller according to claim 6, characterized in that, The rebound assembly includes a lifting rod and a wedge block. A through hole is opened on the mounting block, and the lifting rod is inserted into the through hole. A spring is set between the lifting rod and the U-shaped rod. A limit groove is opened in the middle section of the lifting rod. A wedge block extending into the limit groove is fixed on the unlocking block, and the inclined surface of the wedge block presses against the limit groove.

Images