Folding baby stroller

Abstract

The utility model relates to the field of baby strollers, in particular to a folding baby stroller, which has an unfolding state and a folding state and comprises a front foot group, a rear foot group, a cushion group and a push handle group, joints of the push handle group, the rear foot group and the front foot group are connected through a large joint group, the push handle group is linked with the front foot group through the large joint group, and the cushion group is connected with the cushion group through the large joint group. During folding, the push handle set and the front foot set synchronously rotate towards the rear foot set, the two sides of one end of the cushion set are movably connected with the front foot set, the two sides of the other end of the cushion set are movably connected with backrest bases, the backrest bases are movably connected with the rear foot set, a backrest pipe is movably connected between the two backrest bases, and the backrest pipe and the backrest bases are adjustably locked. The whole structure integrates locking and linkage, and is simple and attractive in appearance, firm in locking effect, not prone to shaking, capable of being folded through one-hand operation, compact in structure, small in size and convenient to store.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of children's pushchair, specifically a folding children's pushchair. BACKGROUND

[0002] Children's pushchair is widely used as baby's walking tool. It is easy to store and convenient to carry because of convenient folding and small volume after folding, which is the consumer's use demand for folding children's pushchair. The existing similar folding pushchair includes a frame with folding and unfolding forms, respectively by front leg group, rear leg group, push handle group and locking mechanism, the push handle group and the front leg group lack linkage, or the front leg group is linked by external connecting rod, which results in insufficient rigidity of the frame and easy shaking, and the structure is complex, the appearance is complicated and the aesthetic property is poor. SUMMARY

[0003] In view of the existing problems, the utility model provides a folding children's pushchair, which can effectively solve the problems in the background art.

[0004] To solve the above problems, the utility model adopts the following technical scheme:

[0005] A folding children's pushchair, the children's pushchair has two states of unfolding and folding, the children's pushchair includes a front leg group, a rear leg group, a seat cushion group and a push handle group, the intersection of the push handle group, the rear leg group and the front leg group is connected through a large joint group, the push handle group is linked with the front leg group through the large joint group, in folding, the push handle group and the front leg group rotate towards the rear leg group synchronously, one end of the seat cushion group is movably connected with the front leg group on both sides, the other end of the seat cushion group is movably connected with a backrest on both sides, the backrest is movably connected with the rear leg group, a backrest pipe is movably connected between the two backrests, and the backrest pipe and the backrest are adjustably locked.

[0006] As a further scheme of the utility model: the large joint group includes a middle shaft rod and a push handle joint, a front leg joint and a rear leg joint which are sequentially stacked and coaxially arranged, the push handle joint is connected with the push handle group, the front leg joint is connected with the front leg group, the rear leg joint is connected with the rear leg group, the middle shaft rod sequentially penetrates the center holes of the push handle joint, the front leg joint and the rear leg joint, a linkage piece is arranged between the push handle joint and the front leg joint, the push handle joint and the front leg joint rotate synchronously and reversely through the linkage piece, and the push handle joint and the front leg joint both rotate relative to the rear leg joint, a locking structure is arranged on the side of the push handle joint away from the front leg joint, and the push handle joint and the front leg joint are provided with locking grooves matched with the locking structure, and the locking structure slides away from the locking grooves to unlock the push handle joint.

[0007] As a further scheme of the utility model: the seventh arc-shaped groove is communicated with the locking groove, and the length of the locking groove is greater than the width of the seventh arc-shaped groove, the seventh arc-shaped groove on the push handle joint and the seventh arc-shaped groove on the front leg joint are located on the two sides of the locking groove respectively, a fixing groove matched with the locking groove is arranged in the rear leg joint, the locking structure comprises a sliding structure and a locking rod, the locking rod passes through the locking grooves on the push handle joint and the front leg joint in sequence and then extends into the fixing groove in the rear leg joint, the push handle joint is locked, the sliding structure drives the locking rod to slide from the locking groove to the seventh arc-shaped groove, and the push handle joint is unlocked.

[0008] As a further scheme of the utility model: the sliding structure comprises a pull line ring and a locking base, the pull line ring is arranged between the locking base and the push handle joint and slides along the push handle joint, the locking rod is fixed on the locking base, a sliding groove is arranged on the locking base, a spring base is arranged in the sliding groove, the spring base and the locking base are connected through a reset spring, the middle shaft rod passes through the spring base, a limiting protrusion is arranged on one side of the locking base, the limiting protrusion extends into the pull line ring, and when the pull line ring slides, the limiting protrusion drives the locking base to slide, so that the locking rod slides from the locking groove to the seventh arc-shaped groove; after the pull line ring is loosened, the reset spring resets the locking base.

[0009] As a further scheme of the utility model: the push handle group comprises a lower push handle and an upper push handle, a lower push handle joint is fixed on the lower push handle, an upper push handle joint is fixed on the upper push handle, the lower push handle is connected with the push handle joint, and the lower push handle joint and the upper push handle joint are connected through a pin shaft.

[0010] As a further scheme of the utility model: the upper push handle joint movably connects a push handle rotor and a push handle gear, a tooth groove matched with the push handle gear is arranged in the lower push handle joint and the upper push handle joint, an elastic sliding structure in the lower push handle joint is arranged on the lower end of the lower push handle joint, the elastic sliding structure is connected with the pull line ring through a traction cable I, the push handle rotor is connected with the elastic sliding structure through a traction cable II, a folding button is arranged on the upper push handle joint, the folding button is connected with the traction cable II, after the folding button is pressed, the traction cable II is pulled, the traction cable II drives the push handle rotor to rotate, the push handle rotor drives the push handle gear to enter the tooth groove in the upper push handle joint, the upper push handle joint and the lower push handle joint are unlocked, the traction cable II pulls the traction cable I through the elastic sliding structure, the traction cable I pulls the pull line ring, the large joint group is unlocked, and folding is carried out.

[0011] As a further scheme of the utility model: the elastic sliding structure includes the sliding frame fixed at the lower end of the push handle joint, the sliding frame is slidably connected with the sliding piece, one end of the sliding piece is fixedly connected with the sliding frame through spring two, traction cable two and traction cable one are fixedly connected with two ends of the sliding direction of the sliding piece respectively.

[0012] As a further scheme of the utility model: the inner side of the push handle joint is rotatably connected with the awning joint, the awning joint is fixedly connected with the awning frame.

[0013] As a further scheme of the utility model: a plurality of lock tooth grooves are arranged on the backrest seat, the lock tongue matched with the lock tooth groove is elastically connected on the backrest tube, the backrest button is arranged on the backrest tube, the backrest button is used for unlocking the lock tongue, and the inclination angle of the backrest tube is adjusted.

[0014] As a further scheme of the utility model: the front end of the cushion group is connected with the inner side shaft of the large joint group through the limiting flat iron.

[0015] Compared with the prior art, the utility model has the advantages that: the utility model discloses a whole structure of a folding child stroller, which comprises a front foot group, a push handle group, a rear push handle group, a cushion group, a large joint group and a backrest tube. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure perspective schematic view of a folding child stroller;

[0017] Figure 2 It is a whole structure split schematic view of a folding child stroller;

[0018] Figure 3 It is a push handle group structure split schematic view of a folding child stroller;

[0019] Figure 4 It is an elastic sliding structure schematic view of a folding child stroller;

[0020] Figure 5 It is a large joint group structure perspective schematic view of a folding child stroller;

[0021] Figure 6 It is a large joint group structure perspective split schematic view of a folding child stroller;

[0022] Figure 7 It is a locking structure one perspective schematic view of a large joint group of a folding child stroller;

[0023] Figure 8It is another perspective view of the locking structure in the large joint group of the folding child stroller;

[0024] Figure 9 It is a split diagram of the connection between the backrest seat and the backrest tube in the folding child stroller;

[0025] Figure 10 It is a folding process diagram of the folding child stroller;

[0026] Figure 11 It is a diagram after the folding child stroller is folded.

[0027] In the figure: 1, front leg group; 2, rear leg group; 3, seat cushion group; 4, handle group; 41, lower handle; 42, upper handle; 43, lower handle joint; 44, upper handle joint; 45, handle rotor; 46, handle gear; 5, large joint group; 51, handle joint; 52, front leg joint; 53, rear leg joint; 531, fixed groove; 54, linkage piece; 55, middle shaft; 56, locking structure; 561, locking rod; 562, pull ring; 563, locking seat; 564, sliding groove; 565, spring seat; 566, return spring; 567, limiting protrusion; 57, locking groove; 58, seventh arc-shaped groove; 6, backrest seat; 61, locking tooth groove; 7, backrest tube; 71, locking tongue; 72, backrest button; 8, elastic sliding structure; 81, sliding carriage; 82, sliding piece; 83, spring two; 9, folding button; 10, canopy joint; 11, canopy frame; 12, limiting flat iron. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] In combination with Figures 1 to 11 In the embodiment, the folding child stroller has two states of unfolding and folding, and comprises a front leg group 1, a rear leg group 2, a seat cushion group 3 and a handle group 4. The handle group 4, the rear leg group 2 and the front leg group 1 are connected through a large joint group 5. The handle group 4 is linked with the front leg group 1 through the large joint group 5. When folding, the handle group 4 and the front leg group 1 are synchronously rotated towards the rear leg group 2. One end of the seat cushion group 3 is movably connected with the front leg group 1. The other end of the seat cushion group 3 is movably connected with a backrest seat 6 on both sides. The backrest seat 6 is movably connected with the rear leg group 2. A backrest tube 7 is movably connected between the two backrest seats 6. The backrest tube 7 is adjustably locked with the backrest seat 6.

[0030] Further, as shown in Figures 5-8 The large joint group 5 includes a middle shaft 55, a push handle joint 51, a front foot joint 52 and a rear foot joint 53 which are stacked and coaxially arranged in sequence, the middle shaft 55 passes through the center holes of the push handle joint 51, the front foot joint 52 and the rear foot joint 53 in sequence, a linkage sheet 54 is arranged between the push handle joint 51 and the front foot joint 52, the push handle joint 51 rotates synchronously and reversely with the front foot joint 52 through the linkage sheet 54, and the push handle joint 51 and the front foot joint 52 both rotate relative to the rear foot joint 53, the side of the push handle joint 51 away from the front foot joint 52 is provided with a locking structure 56, and the push handle joint 51 and the front foot joint 52 are provided with a locking groove 57 matched with the locking structure 56, the locking structure 56 slides out of the locking groove 57 to unlock the push handle joint 51.

[0031] The push handle joint 51 and the front foot joint 52 are both provided with a seventh arc-shaped groove 58 which is communicated with the locking groove 57, and the length of the locking groove 57 is greater than the width of the seventh arc-shaped groove 58, the seventh arc-shaped groove 58 on the push handle joint 51 and the seventh arc-shaped groove 58 on the front foot joint 52 are respectively located on the two sides of the locking groove 57, and the rear foot joint 53 is provided with a fixing groove 531 matched with the locking groove 57, the locking structure 56 includes a sliding structure and a locking rod 561, the locking rod 561 passes through the locking groove 57 on the push handle joint 51 and the front foot joint 52 in sequence and then extends into the fixing groove 531 of the rear foot joint 53 to lock the push handle joint 51, and the sliding structure drives the locking rod 561 to slide from the locking groove 57 to the seventh arc-shaped groove 58 to unlock the push handle joint 51.

[0032] As shown in Figures 7-8 The sliding structure includes a pull line ring 562 and a locking seat 563, the pull line ring 562 is arranged between the locking seat 563 and the push handle joint 51 and slides along the push handle joint 51, the upper end of the pull line ring 562 is fixedly connected with a rope which is fixedly connected with a folding button 9 on the push handle group 4, the pull line ring 562 is pulled upward to slide by pressing the folding button 9, the locking rod 561 is fixed on the locking seat 563, the locking seat 563 is provided with a sliding groove 564, the sliding groove 564 is provided with a spring seat 565, the spring seat 565 and the locking seat 563 are connected through a reset spring 566, the middle shaft 55 passes through the spring seat 565, one side of the locking seat 563 is provided with a limiting protrusion 567 which extends into the pull line ring 562, the locking seat 563 is driven to slide by the limiting protrusion 567 when the pull line ring 562 slides, so that the locking rod 561 slides from the locking groove 57 to the seventh arc-shaped groove 58, and the locking seat 563 is reset by the reset spring 566 after the pull line ring 562 is released.

[0033] As shown in Figure 3As shown, the push handle assembly 4 includes a lower push handle 41 and an upper push handle 42. A lower push handle joint 43 is fixed on the lower push handle 41, and an upper push handle joint 44 is fixed on the upper push handle 42. The lower push handle 41 is connected to the push handle joint 51, and the lower push handle joint 43 and the upper push handle joint 44 are movably connected by a pin, so that the upper push handle 42 can rotate and fold relative to the lower push handle 41.

[0034] like Figures 3-4 As shown, a push handle rotor 45 and a push handle gear 46 are movably connected within the upper push handle joint 44. Both the lower push handle joint 43 and the upper push handle joint 44 have toothed grooves that match the push handle gear 46. The lower end of the lower push handle joint 43 has an elastic sliding structure 8 located within the lower push handle 41. The elastic sliding structure 8 is connected to a pull cable ring 562 via a first traction cable. The push handle rotor 45 is connected to the elastic sliding structure 8 via a second traction cable. The upper push handle joint 44 has a retraction button 9 connected to the second traction cable. When the retraction button 9 is pressed, the second traction cable is pulled, causing the push handle rotor 45 to rotate. The push handle rotor 45 pushes the push handle gear 46 into the toothed groove of the upper push handle joint 44, unlocking the upper push handle joint 44 and the lower push handle joint 43, folding the joint assembly. The second traction cable pulls the first traction cable via the elastic sliding structure 8, and the first traction cable pulls the pull cable ring 562, unlocking the large joint assembly 5 and folding the vehicle.

[0035] like Figure 4 As shown, the elastic sliding structure 8 includes a slide 81 fixed to the lower end of the push handle joint 43. The sleeve of the push handle 41 is sleeved on the outside of the slide 81. A sliding member 82 is slidably connected inside the slide 81. One end of the sliding member 82 is fixedly connected to the slide 81 by a second spring 83. The second traction cable and the first traction cable are respectively fixedly connected to the two ends of the sliding member 82 in the sliding direction.

[0036] The inner side of the push handle joint 44 is rotatably connected to the canopy seat joint 10, and the canopy seat frame 11 is fixedly connected to the canopy seat joint 10.

[0037] like Figure 9 As shown, the backrest seat 6 is provided with multiple locking grooves 61, and the backrest tube 7 is elastically connected with a locking tongue 71 that matches the locking grooves 61. The backrest tube 7 is provided with a backrest button 72, which is used to unlock the locking tongue 71 and facilitates adjustment of the tilt angle of the backrest tube 7.

[0038] The front sides of the seat cushion assembly 3 are connected to the inner shaft of the large joint assembly 5 via limiting flat irons 12. There are two limiting flat irons 12. One end of the limiting flat iron 12 is provided with a limiting groove. The shaft passes through the limiting groove and is connected to the side of the tube on the seat cushion assembly 3. The other end of the limiting flat iron 12 is connected to the shaft of the large joint assembly 5. The limiting flat iron 12 is used to rotate and position the seat cushion 3, and at the same time provide traction to improve the strength of the seat cushion 3.

[0039] The working principle of the utility model is: pressing the folding button 9, unlocking the push handle joint 51 in the big joint group 5 and the upper push handle joint 44 and the lower push handle joint 43, folding the push handle group 4, and folding the front foot group 1 and the push handle group 4 through the big joint group 5, and driving the cushion group 3 to rotate and fold, the whole structure is integrated with locking and linkage, the appearance is simple and beautiful, the locking effect is firm, it is not easy to shake, it can be folded by single hand, the structure is compact, the volume is small, and it is convenient to store.

[0040] It should be noted that in this document, relationship terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying that these entities or actions are in any way actually related or ordered in time. Also, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0041] Although the embodiments of the utility model have been shown and described, it should be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A folding stroller, characterized in that, The stroller has two states: unfolded and folded. The stroller includes a front leg assembly, a rear leg assembly, a seat assembly, and a push handle assembly. The push handle assembly, the rear leg assembly, and the front leg assembly are connected by a large joint assembly. The push handle assembly is linked to the front leg assembly through the large joint assembly. When folded, the push handle assembly and the front leg assembly rotate synchronously toward the rear leg assembly. One end of the seat assembly is movably connected to both sides of the front leg assembly. The other end of the seat assembly is movably connected to both sides of the backrest seat. The backrest seat is movably connected to the rear leg assembly. A backrest tube is movably connected between the two backrest seats. The backrest tube and the backrest seat are adjustable and lockable.

2. A folding stroller according to claim 1, characterized in that, The large joint assembly includes a central shaft and a push handle joint, a front foot joint, and a rear foot joint arranged coaxially and stacked in sequence. The push handle joint is connected to the push handle assembly, the front foot joint is connected to the front foot assembly, and the rear foot joint is connected to the rear foot assembly. The central shaft passes through the central holes of the push handle joint, the front foot joint, and the rear foot joint in sequence. A linkage plate is provided between the push handle joint and the front foot joint. The push handle joint rotates synchronously with the front foot joint through the linkage plate, but in opposite directions. Both the push handle joint and the front foot joint rotate relative to the rear foot joint. A locking structure is provided on the side of the push handle joint away from the front foot joint, and locking grooves matching the locking structure are provided on the push handle joint and the front foot joint. The locking structure slides out of the locking groove, unlocking the push handle joint.

3. A folding stroller according to claim 2, characterized in that, Both the push handle joint and the front foot joint are provided with a seventh arc-shaped groove, which is connected to the locking groove. The length of the locking groove is greater than the width of the seventh arc-shaped groove. The seventh arc-shaped groove on the push handle joint and the seventh arc-shaped groove on the front foot joint are located on both sides of the locking groove. The rear foot joint is provided with a fixing groove that matches the locking groove. The locking structure includes a sliding structure and a locking rod. The locking rod passes through the locking grooves on the push handle joint and the front foot joint in sequence and then extends into the fixing groove of the rear foot joint to lock the push handle joint. The sliding structure drives the locking rod to slide from the locking groove to the seventh arc-shaped groove to unlock the push handle joint.

4. A folding stroller according to claim 3, characterized in that, The sliding structure includes a pull cord ring and a locking seat. The pull cord ring is located between the locking seat and the push handle joint and slides along the push handle joint. The locking rod is fixed on the locking seat. The locking seat has a sliding groove, and a spring seat is located in the sliding groove. The spring seat and the locking seat are connected by a return spring. The central shaft passes through the spring seat. A limit protrusion is provided on one side of the locking seat. The limit protrusion extends into the pull cord ring. When the pull cord ring slides, the limit protrusion drives the locking seat to slide, causing the locking rod to slide from the locking groove into the seventh arc-shaped groove. After the pull cord ring is released, the return spring acts to reset the locking seat.

5. A folding stroller according to claim 1, characterized in that, The push handle assembly includes a lower push handle and an upper push handle. A lower push handle joint is fixed on the lower push handle, and an upper push handle joint is fixed on the upper push handle. The lower push handle is connected to the push handle joint, and the lower push handle joint and the upper push handle joint are connected by a pin.

6. A folding stroller according to claim 5, characterized in that, The upper push handle joint is movably connected to a push handle rotor and a push handle gear. Both the lower push handle joint and the upper push handle joint are provided with tooth grooves that match the push handle gear. The lower end of the lower push handle joint is provided with an elastic sliding structure located inside the lower push handle. The elastic sliding structure is connected to the pull cable ring through a first traction cable. The push handle rotor is connected to the elastic sliding structure through a second traction cable. The upper push handle joint is provided with a folding button. The folding button is connected to the second traction cable. When the folding button is pressed, the second traction cable is pulled. The second traction cable drives the push handle rotor to rotate. The push handle rotor pushes the push handle gear into the tooth groove of the upper push handle joint, unlocking the upper push handle joint and the lower push handle joint. The second traction cable pulls the first traction cable through the elastic sliding structure. The first traction cable pulls the pull cable ring, unlocking the large joint assembly and folding the vehicle.

7. A folding stroller according to claim 6, characterized in that, The elastic sliding structure includes a slide frame fixed to the lower end of the push handle joint, a sliding member slidably connected inside the slide frame, one end of the sliding member being fixedly connected to the slide frame by a second spring, and the second traction cable and the first traction cable being fixedly connected to the two ends of the sliding member in the sliding direction, respectively.

8. A folding stroller according to claim 5, characterized in that, The inner side of the push handle joint is rotatably connected to the canopy seat joint, and a canopy seat frame is fixedly connected to the canopy seat joint.

9. A folding stroller according to claim 1, characterized in that, The backrest seat is provided with multiple locking tooth grooves, and the backrest tube is elastically connected with a locking tongue that matches the locking tooth grooves. The backrest tube is provided with a backrest button, which is used to unlock the locking tongue.

10. A folding stroller according to claim 1, characterized in that, The front sides of the seat cushion assembly are connected to the inner shaft of the large joint assembly via limiting flat iron.

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