Linkage folding joint assembly of stroller

Abstract

The utility model relates to the field of baby strollers, in particular to a linkage folding joint assembly of a baby stroller, which comprises a front foot joint, a rear foot joint and a push handle joint which are positioned on the same plane, the push handle joint and the rear foot joint are laminated and stacked together and are placed in the front foot joint, and the push handle joint and the rear foot joint are both rotatably connected with the front foot joint. A locking groove and a locking groove are formed in the rear foot joint, a locking structure is arranged in the push handle joint and comprises a lock seat and a spring bolt, the lock seat and the spring bolt are both in sliding connection with the push handle joint, the spring bolt and the lock seat are matched with the locking groove and the locking groove respectively, and when the push handle joint slides to be separated from the locking groove, the lock seat drives the spring bolt to be separated from the locking groove. The push handle joint and the rear foot joint are unlocked, and the push handle joint and the rear foot joint are connected through a rear foot linkage piece; the whole structure integrates locking and linkage, the locking effect is good, joint shaking is small, and when the locking mechanism is applied to the stroller, folding is compact, the size is small, and storage is convenient.

Description

TECHNICAL FIELD

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

[0002] Children's pushchair is widely used as a baby's walking tool. It is easy to store and convenient to carry because of its small size after folding, which is the consumer's demand for folding children's pushchair. The folding joint is an important part in the folding children's pushchair. Patent application number CN201820113389.4 discloses a linkage folding joint for children's pushchair, which includes a base, a connecting piece one, a connecting piece two and a connecting piece three. The connecting piece one and the connecting piece two are rotatably arranged on the base, and the connecting piece one and the connecting piece two are linked through a gear assembly. The connecting piece three is fixedly connected with the base. Although the gear assembly is used to link the connecting piece one and the connecting piece two in this structure, this linkage structure does not have a locking function. Some existing similar joints are connected by a single point between the front leg joint and the rear leg joint, which has the disadvantage of causing the folded frame to be triangular and large in size. Therefore, the present application provides a linkage folding joint assembly of children's pushchair to solve the above problems. SUMMARY

[0003] In view of the existing problems, the utility model provides a linkage folding joint assembly of 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 linkage folding joint assembly of children's pushchair, which includes a front leg joint, a rear leg joint and a handle joint in the same plane. The handle joint and the rear leg joint are stacked together and placed in the front leg joint. The handle joint and the rear leg joint are both rotatably connected with the front leg joint. The rear leg joint is provided with a locking groove and a locking slot. The handle joint is provided with a locking structure, which includes a lock seat and a lock tongue. The lock seat and the lock tongue are both slidingly connected with the handle joint, and the lock tongue and the lock seat are matched with the locking groove and the locking slot respectively. When the lock seat slides out of the locking slot, the lock tongue is driven to separate from the locking groove, unlocking the handle joint and the rear leg joint. The handle joint and the rear leg joint are connected through a rear leg linkage piece.

[0006] As a further scheme of the utility model: the push handle joint is provided with intersecting vertical grooves and horizontal grooves, the lock seat is slidably arranged in the vertical groove, the lock tongue is slidably arranged in the horizontal groove and the lock tongue slides through the lock seat, the lock tongue is provided with an inclined groove, the lock seat is provided with a rivet passing through the inclined groove, when the lock seat slides towards the push handle joint, the rivet abuts against the inclined groove to make the lock tongue slide towards the push handle joint, so that the lock tongue is separated from the locking groove.

[0007] As a further scheme of the utility model: the push handle joint is provided with a limiting strip groove communicated with the vertical groove, the rivet slides along the limiting strip groove to limit the sliding of the lock seat.

[0008] As a further scheme of the utility model: one end of the lock tongue is fixedly connected with the push handle joint through a return spring, the upper end of the lock seat is provided with a threading hole, the threading hole is fixedly provided with a pull line, and the pull line passes out of the internal passage of the push handle joint.

[0009] As a further scheme of the utility model: the horizontal groove is consistent in size with the lock tongue and the middle part of the horizontal groove is provided with a spring groove, and the return spring is arranged in the spring groove.

[0010] As a further scheme of the utility model: the front joint, the rear joint and the push handle joint are all made of hard plastic material, and the push plate joint is embedded with a reinforcing sheet on the side of the locking groove and the locking groove subjected to force.

[0011] As a further scheme of the utility model: the rear joint is provided with a rear connecting pipe and a handrail connecting pipe, the handrail connecting pipe abuts against the front joint to limit the rotating direction of the rear joint.

[0012] As a further scheme of the utility model: the push handle joint is provided with a first pin hole, the rear connecting pipe is provided with a second pin hole, the rear linkage piece is L-shaped and the two ends thereof are movably connected with the first pin hole and the second pin hole through pin rods.

[0013] Compared with the prior art, the utility model has the beneficial effects that: the lock seat and the lock tongue are respectively inserted into the locking groove and the locking groove, so that double locking is achieved, after unlocking, the push handle joint is rotated through the rear linkage piece to drive the rear joint to rotate in linkage, until the front joint, the rear joint and the push handle joint are folded and attached together, the overall structure is integrated with locking and linkage, the locking effect is good, the joint shakes little, when applied to the child stroller, the folding is compact, the volume is small and the storage is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is an overall structure perspective view of a linkage folding joint assembly of a child stroller.

[0015] Figure 2 Fig. 1 is a schematic view of the overall structure of a linkage folding joint assembly of a child stroller;

[0016] Figure 3 Fig. 2 is a schematic view of the overall structure of a linkage folding joint assembly of a child stroller;

[0017] Figure 4 Fig. 3 is a schematic view of the connection structure between the locking structure and the handle joint in a linkage folding joint assembly of a child stroller;

[0018] Figure 5 Fig. 4 is a schematic view of the exploded structure of a linkage folding joint assembly of a child stroller; Figure 4

[0019] Figure 6 Fig. 5 is a schematic view of the handle joint structure in a linkage folding joint assembly of a child stroller;

[0020] Figure 7 Fig. 6 is a schematic view of the locking structure in a linkage folding joint assembly of a child stroller;

[0021] Figure 8 Fig. 7 is a schematic view of the folding process of a linkage folding joint assembly of a child stroller;

[0022] Figure 9 Fig. 8 is a schematic view of the folding completion of a linkage folding joint assembly of a child stroller;

[0023] Figure 10 Fig. 9 is a schematic view of another handle joint structure in a linkage folding joint assembly of a child stroller;

[0024] Figure 11 Fig. 10 is a schematic view of the exploded structure of a linkage folding joint assembly of a child stroller; Figure 10 Figure 1

[0025] Figure 12 Figure 10 Figure 2 .

[0026] Fig. 1 is a schematic view of the overall structure of a linkage folding joint assembly of a child stroller; DETAILED DESCRIPTION

[0027] ​​​​​​The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Combination Figures 1 to 9 This embodiment provides a linkage folding joint assembly for a child stroller, comprising a front leg joint 1, a rear leg joint 2, and a push handle joint 3 on the same plane. The push handle joint 3 is stacked together with the rear leg joint 2 and placed inside the front leg joint 1. Both the push handle joint 3 and the rear leg joint 2 are rotatably connected to the front leg joint 1. The rear leg joint 2 is provided with a locking groove 21 and a locking groove 22. The push handle joint 3 is provided with a locking structure 4, which includes a locking seat 41 and a locking tongue 42. Both the locking seat 41 and the locking tongue 42 are slidably connected to the push handle joint 3, and the locking tongue 42 and the locking seat 41 respectively cooperate with the locking groove 21 and the locking groove 22. When the push handle joint 3 slides out of the locking groove 22, the locking seat 41 drives the locking tongue 42 to disengage from the locking groove 21, unlocking the push handle joint 3 and the rear leg joint 2. The push handle joint 3 and the rear leg joint 2 are connected by a rear leg linkage piece 5.

[0029] like Figures 4-7 As shown, the push handle joint 3 is provided with overlapping vertical grooves 31 and horizontal grooves 32. The lock seat 41 is slidably disposed in the vertical groove 31, and the lock tongue 42 is slidably disposed in the horizontal groove 32 and slides through the lock seat 41. The lock tongue 42 is provided with an oblique groove 43, and the lock seat 41 is provided with a rivet 44 passing through the oblique groove 43. When the lock seat 41 slides toward the push handle joint 3, the rivet 44 abuts against the oblique groove 43 and causes the lock tongue 42 to slide toward the push handle joint 3, so that the lock tongue 42 disengages from the locking groove 21.

[0030] The push handle joint 3 is provided with a limiting strip slot 33 communicated with the vertical slot 31, the rivet 44 slides along the limiting strip slot 33 to slide and limit the lock seat 41, when the rivet 44 moves from the lower end to the upper end of the limiting strip slot 33, the rivet 44 moves from the right lower end to the left upper end of the inclined slot 43, so as to move the lock tongue 42 to the right to disengage the lock tongue 42 from the locking slot 21, at the same time, the lock seat 41 is disengaged from the locking slot 22, and the double unlocking is completed. One end of the lock tongue 42 is fixedly connected with the push handle joint 3 through the reset spring 45, and the upper end of the lock seat 41 is provided with a threading hole 46, the threading hole 46 is fixed with a pull wire, the pull wire passes through the internal passage of the push handle joint 3, the pull wire is connected with an unlocking button, the unlocking button is installed on the push handle group, so that the unlocking is convenient, at the same time, when unfolding, the lock tongue 42 is reset and inserted into the locking slot 21 through the action of the reset spring 45, at the same time, the lock seat 41 is lowered into the locking slot 22 to complete the double locking. The plane size of the horizontal slot 32 is consistent with the size of the lock tongue 42, and the middle part of the horizontal slot 32 is provided with a spring slot 34, and the reset spring 45 is arranged in the spring slot 34.

[0031] The front leg joint 1, the rear leg joint 2 and the push handle joint 3 are all made of hard plastic material, the push plate joint is embedded and installed with a reinforcing sheet 6 on the side of the locking slot 21 and the locking slot 22 subjected to force, the reinforcing sheet 6 is arranged to improve the locking strength, avoid damage to the push handle joint 3 in the long-term unlocking process of the lock seat 41 and the lock tongue 42, and improve the service life.

[0032] As shown in Figure 2 The rear leg joint 2 is provided with a rear leg connecting pipe 23 and a handrail connecting pipe 24, the handrail connecting pipe 24 abuts against the front leg joint 1, limits the rotating direction of the rear leg joint 2, and makes the rear leg joint 2 only rotate in one direction.

[0033] The push handle joint 3 is provided with a first pin hole 35, the rear leg connecting pipe 23 is provided with a second pin hole 25, the rear leg linkage piece 5 is L-shaped and the two ends are movably connected with the first pin hole 35 and the second pin hole 25 through a pin rod, for movably connecting the rear leg linkage piece 5, when the push handle joint 3 rotates, the rear leg joint 2 is driven to rotate through the rear leg linkage piece 5, and the one-key folding purpose is achieved.

[0034] In order to simplify the preparation mold of the handle joint, the push plate joint 3 is prepared into two parts, one part is the handle joint body 36, and the other part is the lock mounting seat 47 embedded and mounted into the handle joint body 36, the lock mounting seat 47 is provided with the vertical groove 31, the horizontal groove 32 and the limiting strip groove 33 consistent with the push plate joint 3, and the spring groove 34 is arranged at one end of the lock mounting seat 47 arranged inside the handle joint body 36, so that the lock mounting seat 47 and the handle joint body 36 can be used to extrude and fix the return spring 45. The difference is that the handle joint body 36 and the lock mounting seat 47 are provided with the limiting hole 48, the lock tongue 42 is provided with the limiting groove 49 along the sliding direction, the pin rod passes through the limiting hole 48 and the limiting groove 49, and further limiting the lock tongue 42 is provided, and when the handle joint body 36 rotates, the pin rod passing through the limiting hole 48 can provide support.

[0035] The working principle of the utility model is: through the lock seat 41 and the lock tongue 42 respectively extending into the locking groove 21 and the locking groove 22, double locking is achieved, after unlocking, the push handle joint 3 rotates through the rear foot linkage piece 5 to drive the rear foot joint 2 to rotate linkage, until the front foot joint 1, the rear foot joint 2 and the push handle joint 3 are folded and attached together, the overall structure is integrated with locking and linkage, the locking effect is good, the joint shakes little, when applied to the child stroller, the folding is compact, the volume is small, and the utility model is convenient to store.

[0036] It should be noted that in this text, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations, and the terms "include", "contain" or any other variants are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also other elements not explicitly listed or inherent to such process, method, article or equipment.

[0037] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A linked folding articulation assembly for a child's stroller, comprising: The application relates to a front joint, a rear joint and a push handle joint in the same plane, the push handle joint is attached to the rear joint and is placed into the front joint, the push handle joint and the rear joint are rotationally connected with the front joint, the rear joint is provided with a locking groove and a locking slot, the push handle joint is provided with a locking structure, the locking structure comprises a lock seat and a lock tongue, the lock seat and the lock tongue are slidingly connected with the push handle joint, the lock tongue and the lock seat are matched with the locking groove and the locking slot respectively, when the lock seat slides out of the locking slot, the lock tongue is separated from the locking groove, the push handle joint and the rear joint are unlocked, and the push handle joint and the rear joint are connected through a rear linkage piece.

2. A linked folding articulation assembly for a pushchair according to claim 1, wherein, The push handle joint is provided with a vertical groove and a horizontal groove which are cross and overlap, the lock seat is slidingly arranged in the vertical groove, the lock tongue is slidingly arranged in the horizontal groove and the lock tongue slides through the lock seat, the lock tongue is provided with an inclined groove, the lock seat is provided with a rivet which passes through the inclined groove, when the lock seat slides towards the push handle joint, the rivet abuts against the inclined groove and drives the lock tongue to slide towards the push handle joint, so that the lock tongue is separated from the locking groove.

3. A linked folding articulation assembly for a pushchair according to claim 2, wherein, The push handle joint is provided with a limiting strip groove which is communicated with the vertical groove, the rivet slides along the limiting strip groove and limits the sliding of the lock seat.

4. A linked folding articulation assembly for a pushchair according to claim 3, wherein, One end of the lock tongue is fixedly connected with the push handle joint through a return spring, the upper end of the lock seat is provided with a threading hole, the threading hole is fixed with a pull line, and the pull line passes through an internal passage of the push handle joint.

5. A linked folding articulation assembly for a pushchair according to claim 4, wherein, The horizontal groove has the same size as the lock tongue, and the horizontal groove is provided with a spring groove in the middle, and the return spring is arranged in the spring groove.

6. A linked folding articulation assembly for a stroller according to claim 1, wherein, The front joint, the rear joint and the push handle joint are made of hard plastic material, and reinforcing pieces are embedded and arranged on the side of the push handle joint which is subjected to force of the locking groove and the locking slot.

7. A linked folding articulation assembly for a stroller according to claim 1, wherein, The rear joint is provided with a rear joint connecting pipe and a handrail connecting pipe, the handrail connecting pipe abuts against the front joint and limits the rotating direction of the rear joint.

8. A linked folding articulation assembly for a pushchair according to claim 7, wherein, The push handle joint is provided with a first pin hole, the rear joint connecting pipe is provided with a second pin hole, the rear linkage piece is L-shaped and two ends of the rear linkage piece are movably connected with the first pin hole and the second pin hole through pin rods.

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