CN213292405U - Children's barrow - Google Patents

Abstract

The utility model discloses a children's cart, which comprises a cart frame, wherein the cart frame comprises a front support, a rear support, an upper push rod assembly, a lower push rod, a side connecting rod, a front connecting rod and a rear connecting rod, the rear support comprises a rear upper rod and a rear lower rod which are arranged in a relative sliding manner, the lower push rod is rotationally connected with the upper push rod assembly, and the lower push rod is rotationally connected with the rear upper rod; two parts of the front bracket, the rear bracket and the side connecting rod are rotationally connected, the third part is rotationally connected with any one part of the two parts, or the three parts are rotationally connected with the same shaft, and the side connecting rod is rotationally connected with the upper push rod assembly; one end part of the front connecting rod is rotatably connected with the front bracket, the other end part of the front connecting rod is rotatably connected with the lower push rod, the other end part of the front connecting rod and the lower push rod can also slide relatively, one end part of the rear connecting rod is rotatably connected with the lower push rod, and the other end part of the rear connecting rod is rotatably connected with the rear lower rod. This children's shallow folding convenient operation, folding back structure volume is less.

Description

Children's barrow

Technical Field

The utility model relates to a children's articles for use technical field, concretely relates to children's shallow.

Background

The child stroller provides great convenience for adults to carry small children for outdoor activities, so that the child stroller gradually becomes a necessity for adults to carry children for outdoor activities. In order to facilitate carrying and storage of the stroller, the stroller is generally foldable. The existing children stroller has various types, different numbers of rod pieces of a stroller frame and different connecting positions among the rod pieces, so that the folding principle, the folding mode and the folding effect are different.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a modified children's shallow to not enough among the prior art.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a stroller having unfolded and folded conditions, the stroller comprising a stroller frame, a front wheel assembly disposed at a bottom front portion of the stroller frame, and a rear wheel assembly disposed at a bottom rear portion of the stroller frame, the stroller frame comprising:

the front bracket is arranged below the front bracket;

the rear support comprises a rear upper rod and a rear lower rod which is arranged on the rear upper rod in a sliding manner along the length extension direction of the rear upper rod, and the rear wheel assembly is arranged below the rear lower rod;

an upper push rod assembly;

the upper part of the lower push rod is rotationally connected with the lower part of the upper push rod assembly, and the lower push rod is rotationally connected with the rear upper rod;

the upper part of the side connecting rod is rotatably connected with the lower part of the upper push rod assembly;

one end of the front connecting rod is rotatably connected with the front bracket, the other end of the front connecting rod is rotatably connected with the lower part of the lower push rod, and the other end of the front connecting rod and the lower part of the lower push rod can be arranged in a relatively sliding manner;

one end of the rear connecting rod is rotatably connected with the lower part of the lower push rod, and the other end of the rear connecting rod is rotatably connected with the rear lower rod.

Preferably, when the stroller is in the unfolded state, the lower rod is provided with a joint of the upper rod assembly, a joint of the lower rod and the rear upper rod, a joint of the lower rod and the front connecting rod, and a joint of the lower rod and the rear connecting rod from top to bottom.

Preferably, a sliding groove extending along the length extension direction of one of the two lower parts of the lower push rod and the other end of the front connecting rod is provided with a first shaft, the other end of the front connecting rod is rotatably connected with the lower part of the lower push rod through the first shaft, the first shaft is matched with the sliding groove, and the first shaft is located in the sliding groove and can be arranged in a sliding manner along the length extension direction of the sliding groove.

Further, the sliding groove is formed in the lower portion of the lower push rod, the first shaft is arranged on the front connecting rod, when the stroller is in the unfolded state, the lower push rod extends in the up-down direction, the first shaft is located at the lower end portion of the sliding groove, and when the stroller is folded, the first shaft slides upwards along the length extending direction of the sliding groove.

Further, the sliding groove is formed in the other end portion of the front connecting rod, the first shaft is arranged on the lower portion of the lower push rod, when the stroller is in the unfolded state, the front connecting rod extends in the front-back direction, the first shaft is located at the rear end portion of the sliding groove, and when the stroller is folded, the first shaft slides forwards in the length extending direction of the sliding groove.

Further, the stroller further comprises an elastic member for driving the first shaft to slide relative to the sliding groove when the stroller is unfolded from the folded state, and two end portions of the elastic member are respectively disposed on one of the other end portion of the front link and the lower two components of the lower push rod and the first shaft.

Further, the child stroller further comprises a limiting structure for stably keeping the front link in the unfolded state.

Still further, limit structure is including setting up at another tip of preceding connecting rod and the spacing groove on one of two parts in the lower part of push down rod, the spacing groove with the spout is linked together, the primary shaft can follow the spacing groove slides and gets into the spout or follow the spout slides and gets into in the spacing groove, when the children's shallow is in the state of expanding, the primary shaft is located in the spacing groove, when the children's shallow is folding, the primary shaft can follow the spacing groove slides and gets into the spout and follow the length extending direction of spout slides.

In a specific embodiment, the sliding groove has a front side wall and a rear side wall which are oppositely arranged, the limiting groove is a concave portion which is recessed from the rear side wall of the sliding groove to the outside of the sliding groove, and the concave portion is arc-shaped.

Preferably, the other end of the front link is rotatably connected with the lower part of the lower push rod through a first shaft, the one end of the rear link is rotatably connected with the lower part of the lower push rod through a second shaft, when the stroller is in the unfolded state, the first shaft and the second shaft extend along the same linear direction or are arranged in parallel, and when the stroller is in the folded state, the first shaft and the second shaft are arranged in parallel.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the utility model has simple structure and convenient folding operation, and all the rods can be closely drawn together after being folded, thereby leading the folding structure of the children's cart to have smaller volume and convenient carrying and storage; and the rear part of the front connecting rod, the lower part of the lower push rod and the front part of the rear connecting rod are in the same position in side view, so that the appearance is attractive and compact.

Drawings

Fig. 1 is a perspective view of the stroller of the present invention in an unfolded state;

fig. 2 is a side view of the stroller of the present invention in an unfolded state;

fig. 3 is a schematic structural view of a joint between the other end of the front link and the lower portion of the lower push link of the stroller of the present invention (in an expanded state, an enlarged view of the stroller);

fig. 4 is a schematic structural view of a joint between the other end of the front link and the lower portion of the lower push link of the stroller of the present invention (an enlarged view of the stroller during folding);

fig. 5 is a schematic structural view of a joint between the other end of the front link and the lower portion of the lower push link of the stroller of the present invention (the stroller is in a folded state, and has an enlarged view);

fig. 6 is one of the side views of the stroller of the present invention during the folding process;

fig. 7 is a second side view of the stroller of the present invention during the folding process;

fig. 8 is a perspective view of the stroller of the present invention in a folded state;

fig. 9 is a side view of the stroller of the present invention in a folded state.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 9, the stroller of the present invention includes a stroller frame 1, a front wheel assembly 50 disposed at the front portion of the bottom of the stroller frame 1, and a rear wheel assembly 60 disposed at the rear portion of the bottom of the stroller frame 1.

The stroller frame 1 includes a front bracket 11, a rear bracket, an upper push rod assembly 13, a lower push rod 14, a side link 15, a front link 16, and a rear link 17.

The front wheel assembly 50 is disposed at a lower portion of the front bracket 11. The rear bracket includes a rear upper bar 121 and a rear lower bar 122 slidably provided on the rear upper bar 121 in a length extending direction of the rear upper bar 121, and the rear wheel assembly 60 is provided at a lower portion of the rear lower bar 122. The upper portion of the side link 15 is rotatably connected to the lower portion of the upper push rod assembly 13 by a ninth shaft 29, two of the three components of the upper portion of the front bracket 11, the upper portion of the rear upper rod 121, and the lower portion of the side link 15 are rotatably connected, and the third component is rotatably connected to any one of the two components, or the three components are rotatably connected by the same shaft. The upper part of the lower push rod 14 is rotationally connected with the lower part of the upper push rod assembly 13 through a third shaft 23, and the lower push rod 14 is rotationally connected with the rear upper rod 121 through a fourth shaft 24; one end of the front link 16 is pivotally connected to the lower portion of the front bracket 11 via a fifth shaft 25, the other end of the front link 16 is pivotally connected to the lower portion of the lower push rod 14 via a first shaft 21, and the other end of the front link 16 and the lower portion of the lower push rod 14 are slidably disposed relative to each other. One end of the rear link 17 is rotatably connected to the lower portion of the rear lower lever 122 via the sixth shaft 26, and the other end of the rear link 17 is rotatably connected to the lower portion of the lower push lever 14 via the second shaft 22.

In this embodiment, the rear upper rod 121 includes a main rod and a connecting rod fixedly disposed at an upper end of the main rod, when the stroller is in the unfolded state, the main rod extends obliquely downward from front to back, the connecting rod extends obliquely upward from front to back, and the main rod and the connecting rod intersect to form a T-shaped structure. The main rod has a lumen extending in a length direction thereof, and the rear lower rod 122 is partially inserted in the lumen of the main rod and slidably disposed in the length extending direction of the lumen. The lower portions of the side links 15 are rotatably connected to the upper portions of the connecting rods by seventh shafts 27, and the upper portions of the front frames 11 are rotatably connected to the lower portions of the connecting rods by eighth shafts 28.

Thus, a four-bar linkage is formed between the upper push rod assembly 13, the lower push rod 14, the rear upper rod 121 and the side links 15, and a crank slider mechanism is formed between the lower push rod 14, the rear link 17, the rear lower rod 122 and the rear upper rod 121.

A slide groove 141 extending in the longitudinal extension direction of the other end portion of the front link 16 and one of the lower two members of the lower push rod 14 is provided on the other end portion of the front link 16 and the other of the lower two members of the lower push rod 14, a first shaft 21 is provided on the other of the other end portion of the front link 16 and the lower two members of the lower push rod 14, the first shaft 21 is fitted to the slide groove 141, and the first shaft 21 is located in the slide groove 141 and slidably provided in the longitudinal extension direction of the slide groove 141. When the stroller is folded from the unfolded state or unfolded from the folded state, the first shaft 21 slides in the direction in which the slide groove 141 extends along the length thereof while the front link 16 and the lower push lever 14 relatively rotate about the first shaft 21.

In one embodiment, the slide groove 141 is provided at a lower portion of the push-down lever 14, the slide groove 141 extends in a longitudinal direction of the push-down lever 14, and the first shaft 21 is provided at the other end portion of the front link 16. When the stroller is in the unfolded state, the lower push rod 14 extends in the up-down direction, the first shaft 21 is located at the lower end of the sliding groove 141, when the stroller is folded, the first shaft 21 slides in the length extending direction of the sliding groove 141, and when the stroller is in the folded state, the first shaft 21 is located at the upper end of the sliding groove 141, as shown in fig. 3 to 5.

In another embodiment, the slide groove is provided at the other end portion of the front link, the slide groove extends in the longitudinal direction of the front link, and the first shaft is provided at a lower portion of the lower push rod. When the stroller is in the unfolded state, the front connecting rod extends along the front-rear direction, the first shaft is positioned at the rear end part of the sliding groove, when the stroller is folded, the first shaft slides forwards along the length extending direction of the sliding groove, and when the stroller is in the folded state, the first shaft is positioned at the front end part of the sliding groove, and the first shaft is not shown in the drawing.

The stroller further includes an elastic member 3, and both end portions of the elastic member 3 are respectively provided on the first shaft 21 and one of the other end portion of the front link 16 and the lower two parts of the push-down lever 14. When the stroller is folded, the elastic member 3 is compressed when the first shaft 21 slides upward or forward relative to the sliding groove 141; when the stroller is unfolded from the folded state, the elastic force of the elastic member 3 drives the first shaft 21 to slide downward or backward relative to the sliding groove 141, so that the stroller can be unfolded more quickly and easily.

The stroller also includes a stop structure for stably maintaining the front link 16 in the deployed state. Specifically, the limiting structure includes a limiting groove 141 provided on one of the other end portion of the front link 16 and the lower portion of the push-down rod 14, the limiting groove 142 communicates with the slide groove 141, and the first shaft 21 can slide into the slide groove 141 from the limiting groove 142 or slide into the limiting groove 142 from the slide groove 141. When the stroller is in the unfolded state, the first shaft 21 is located in the limiting groove 142, when the stroller is folded, the first shaft 21 can slide into the sliding groove 141 from the limiting groove 142 and slide along the length extension direction of the sliding groove 141, and when the stroller is in the folded state, the first shaft 21 is located in the sliding groove 141. The first shaft 21 is limited by the limiting groove 142, so that when the front bracket 11 has a transient impact, the first shaft 21 is prevented from sliding along the sliding groove 141, the front connecting rod 16 is rotated, and the stability of the stroller in the unfolding state is affected.

In this embodiment, the sliding groove 141 has a front sidewall 141a and a rear sidewall 141b opposite to each other, the limiting groove 142 is a concave portion recessed from the rear sidewall 142b of the sliding groove 141 to the outside of the sliding groove 141, the concave portion is arc-shaped, and the concave portion and the sliding groove 141 are in smooth transition, so that the first shaft 21 can smoothly slide into the sliding groove 141 from the limiting groove 142 or slide into the limiting groove 142 from the sliding groove 141.

When the stroller is in the unfolded state, the first shaft 21 and the second shaft 22 may extend along the same straight direction, or may be arranged in parallel, preferably in parallel; the first and second shafts 21, 22 are disposed in parallel when the stroller is in the collapsed position.

The upper push rod assembly 13 includes a first upper push rod 131 and a second upper push rod 132 slidably disposed on the first upper push rod 131 in a length extending direction of the first upper push rod 131. In this embodiment, the first push-up rod 131 has a lumen extending along a length direction thereof, and the second push-up rod 132 can slide relative to the first push-up rod 131 in a direction of retracting the lumen of the first push-up rod 131 or extending out of the lumen of the first push-up rod 131. The lower portion of the first push-up rod 131 is rotatably connected to the upper portion of the push-down rod 14 and the upper portion of the side link 15, respectively.

The child stroller further comprises a seat plate 4 for allowing a child to sit, the rear portion of the seat plate 4 is rotatably connected with the lower push rod 14, and the seat plate 4 can be rotatably and slidably arranged on the side connecting rod 15.

The stroller also includes a locking mechanism for locking the stroller in the deployed condition. In this embodiment, the locking mechanism is disposed at the rotational joint of the upper push rod assembly 13 and the lower push rod 14, and the locking mechanism may be a structure in the prior art.

When the stroller is in the unfolded state, the locking mechanism is in the locked state, the front bracket 11, the side link 15, the upper push rod assembly 13, and the lower push rod 14 all extend obliquely upward from front to back, the upper push rod assembly 13 and the lower push rod 14 extend along the same linear direction, and the main rod of the rear upper rod 121 and the rear lower rod 122 all extend obliquely downward from front to back. The second push-up rod 132 protrudes mostly outside the lumen of the first push-up rod 131, and the rear lower rod 122 protrudes mostly outside the lumen of the main rod of the rear upper rod 121. On the side link 15, the ninth shaft 29 is located above the seventh shaft 27; on the front carriage 11, the eighth axis 28 is located above the fifth axis 25; on the lower push rod 14, a third shaft 23, a fourth shaft 24, a first shaft 21, and a second shaft 22 are sequentially arranged from top to bottom. The first shaft 21 is located at the lower part of the sliding groove 141 and located in the limiting groove 142, and the first shaft 21 and the second shaft 22 are close to each other. As shown in fig. 1, 2 and 3.

When the child stroller is folded, the locking mechanism is unlocked first. After the locking mechanism is unlocked, the second push-up rod 132 slides downwards and is mostly retracted into the tube cavity of the first push-up rod 131; the upper push rod assembly 13 is rotated forward and downward as a whole, so that the side link 15 is turned backward and downward around the seventh shaft 27 to be close to the rear bracket, the lower push rod 14 is turned backward and downward around the fourth shaft 24 to be close to the rear bracket, this causes the first shaft 21 and the second shaft 22 to move upward, the front link 16 and the rear link 17 to rotate relative to the push-down rod 14, and the first shaft 21 gradually comes out of the limit groove 142 into the slide groove 141, and slides upward along the length extension direction of the slide groove 141, so that the front bracket 11 is pulled by the front connecting rod 16 to rotate backwards to be close to the rear bracket, the rear lower rod 122 is pulled by the rear connecting rod 17 to slide relative to the rear upper rod 121 and gradually retract into the lumen of the main rod of the rear upper rod 121, in this process, the seat plate 4 rotates and closes the side link 15 and the lower push rod 14, as shown in fig. 4, 6 and 7, and the elastic member 3 is compressed during the folding process. Until the parts making up the stroller frame 1 are brought together closely and finally folded as shown in figures 5, 8 and 9. In the folded state, the first shaft 21 is located at the upper end of the sliding groove 141 in the sliding groove 141, the first shaft 21 is far away from the second shaft 22, the first shaft and the second shaft are parallel, and the whole stroller is flat, compact in structure, small in size, capable of standing on the ground, and convenient to carry and store.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides a children's shallow, has expansion and fold condition, children's shallow includes the shallow frame, sets up the anterior front wheel subassembly in the end of shallow frame is in with the setting the rear wheel subassembly at the end rear portion of shallow frame, its characterized in that: the cart frame includes:

the front bracket is arranged below the front bracket;

the rear support comprises a rear upper rod and a rear lower rod which is arranged on the rear upper rod in a sliding manner along the length extension direction of the rear upper rod, and the rear wheel assembly is arranged below the rear lower rod;

an upper push rod assembly;

the upper part of the lower push rod is rotationally connected with the lower part of the upper push rod assembly, and the lower push rod is rotationally connected with the rear upper rod;

the upper part of the side connecting rod is rotatably connected with the lower part of the upper push rod assembly;

one end of the front connecting rod is rotatably connected with the front bracket, the other end of the front connecting rod is rotatably connected with the lower part of the lower push rod, and the other end of the front connecting rod and the lower part of the lower push rod can be arranged in a relatively sliding manner;

one end of the rear connecting rod is rotatably connected with the lower part of the lower push rod, and the other end of the rear connecting rod is rotatably connected with the rear lower rod.

2. The stroller of claim 1, wherein: when the children's shallow is in the expansion state on the lower push rod, the lower push rod with the junction of last push rod subassembly, the lower push rod with the junction of back upper boom, the lower push rod with the junction of preceding connecting rod with the lower push rod with the junction of back connecting rod from the top down sets up in proper order.

3. The stroller of claim 1, wherein: the push rod mechanism comprises a front connecting rod, a push rod, a lower push rod and a lower connecting rod, wherein a sliding groove extending along the length extension direction of one part is formed in one of the other end part of the front connecting rod and the lower part of the push rod, a first shaft is arranged on the other end part of the front connecting rod and the other part of the lower part of the push rod, the other end part of the front connecting rod and the lower part of the push rod are rotatably connected through the first shaft, the first shaft is matched with the sliding groove, and the first shaft is located in the sliding groove and can be arranged in a sliding mode along the length extension direction of the sliding groove.

4. The stroller of claim 3, wherein: the sliding groove is formed in the lower portion of the lower push rod, the first shaft is arranged on the front connecting rod, when the stroller is in an unfolded state, the lower push rod extends in the up-down direction, the first shaft is located at the lower end portion of the sliding groove, and when the stroller is folded, the first shaft slides upwards along the length extending direction of the sliding groove.

5. The stroller of claim 3, wherein: the spout sets up another tip of preceding connecting rod, the primary shaft is located the lower part of push down rod, works as when the children's shallow is in the state of expanding, preceding connecting rod extends along the fore-and-aft direction, the primary shaft is located the rear end of spout, works as when the children's shallow is folded, the primary shaft is followed the length extending direction of spout slides forward.

6. The stroller of claim 3, wherein: the stroller further comprises an elastic member for driving the first shaft to slide relative to the sliding groove when the stroller is unfolded from the folded state, and two end portions of the elastic member are respectively arranged on one of the other end portion of the front connecting rod and the lower two parts of the lower push rod and the first shaft.

7. The stroller of claim 3, wherein: the stroller further comprises a limiting structure for stably maintaining the front link in the unfolded state.

8. The stroller of claim 7, wherein: the limiting structure comprises a limiting groove arranged on the other end of the front connecting rod and one of two lower parts of the lower push rod, the limiting groove is communicated with the sliding groove, the first shaft can slide into the sliding groove or slide into the limiting groove from the sliding groove, when the stroller is in an unfolded state, the first shaft is positioned in the limiting groove, and when the stroller is folded, the first shaft can slide into the sliding groove from the limiting groove and slide along the length extending direction of the sliding groove.

9. The stroller of claim 8, wherein: the sliding groove is provided with a front side wall and a rear side wall which are oppositely arranged, the limiting groove is a concave part which is sunken from the rear side wall of the sliding groove to the outside of the sliding groove, and the concave part is arc-shaped.

10. The stroller of claim 1, wherein: another tip of preceding connecting rod with the lower part of push down rod is passed through the first axle and is rotated the connection, a tip of back connecting rod with the lower part of push down rod is passed through the second axle and is rotated the connection mutually, works as when children's shallow is in the expansion state, the first axle with the second axle extends or parallel arrangement along same rectilinear direction, works as when children's shallow is in fold condition, the first axle with the second axle parallel arrangement.

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