CN112009550A - a children's stroller - Google Patents

Abstract

The invention relates to a children's stroller, comprising a stroller frame, the stroller frame comprising a front bracket with a front wheel assembly at the lower end, a rear bracket with a rear wheel assembly at the lower end, a push rod assembly, and a rotatable connection with the push rod assembly The first rod, the second rod rotatably connected to the front bracket, the third rod and the fourth rod rotatably connected to the rear bracket, respectively, the third rod, the front bracket, and the first rod are rotatably connected, and The third party is rotatably connected to one of the two, or the three are rotatably connected through the same pivot, and the cart frame further includes a drive mechanism rotatably connected to the second rod, third rod, fourth rod, and push rod assembly, respectively . The third rod of the stroller of the present invention is rotatably connected between the rear bracket and the front bracket. When folded, the driving mechanism drives the fourth rod to drive the rear bracket to rotate closer to the third rod, and the second rod drives the front bracket to rotate relative to the third rod. Rotate closer and folded, the vehicle is small in size, takes up little space, and is easy to carry.

Description

a children's stroller

technical field

The invention relates to the field of children's products, in particular to a children's stroller.

Background technique

In the prior art, a stroller generally includes a stroller frame having an unfolded state and a folded state, a front wheel assembly and a rear wheel assembly, and the stroller frame is locked by a locking mechanism when in the unfolded state. At present, there are many structures that can make the cart frame foldable. The number of rods of the cart frame is different, and the connection positions between the rods are different, so the folding principle and folding method are different, and the effect after folding is also different. .

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an improved stroller for children.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A child stroller includes a stroller frame with a folded state and an expanded state, a front wheel assembly, a rear wheel assembly, and a locking mechanism for locking the stroller frame in the expanded state, the stroller frame comprising a lower end portion A front bracket with the front wheel assembly, a rear bracket with the rear wheel assembly at the lower end, a push rod assembly, a first rod rotatably connected to the push rod assembly, and a second rod rotatably connected to the front bracket. Two rods, the cart frame further includes a third rod and a fourth rod that are rotatably connected to the rear bracket respectively, and two of the third rod, the front bracket and the first rod are rotatably connected, and the third rod is rotatably connected to the front bracket and the first rod. The three are rotationally connected to one of the two, or the three are rotationally connected through the same pivot, and the cart frame further includes the second rod, the third rod, the fourth rod, the push The rod assembly is rotatably connected to a driving mechanism. When folded, the driving mechanism drives the fourth rod to drive the rear bracket to rotate and move closer to the third rod.

According to some implementation aspects of the present invention, when the stroller is in the unfolded state, the connection between the push rod assembly and the driving mechanism, the connection between the third rod and the driving mechanism, and the connection between the second rod and the driving mechanism The connection points or the connection points between the fourth rod and the driving mechanism are distributed in sequence along the up-down direction of the cart.

According to some embodiments of the present invention, the driving mechanism includes a fifth rod extending in the up-down direction of the cart, a sixth rod extending in the front-rear direction of the cart, and a sixth rod slidably disposed along the length direction of the sixth rod. The sliding piece on the sixth rod, the upper part of the fifth rod is rotatably connected with the push rod assembly, the lower part of the fifth rod is rotatably connected with the sliding piece and the fourth rod, and the fifth rod is rotatably connected with the fourth rod. The rod is also rotatably connected with the third rod, and the two ends of the sixth rod are respectively rotatably connected with the second rod and the third rod.

Further, the sliding member is slidably disposed between the connection point of the second rod and the sixth rod and the connection point of the third rod and the sixth rod.

Further, when the stroller is in the unfolded state, the connection between the push rod assembly and the fifth rod, the connection between the third rod and the fifth rod, the connection between the slider and the fifth rod, The connection points of the fourth rod and the fifth rod are sequentially distributed from top to bottom along the length direction of the fifth rod.

According to other embodiments of the present invention, the driving mechanism is a driving rod extending in the up-down direction of the cart and the upper part is rotatably connected with the push rod assembly, the lower part, the second rod and the fourth rod of the driving rod Two of the three are rotationally connected, and the third is rotationally connected to one of the two, or the three are rotationally connected through the same pivot, and the drive lever is also rotationally connected to the third lever .

According to some implementation aspects of the present invention, when the stroller is in a folded state, the front bracket, the third rod, the first rod, and the push rod assemblies are sequentially distributed along the front and rear directions of the stroller, and the driving mechanism, the second rod , The fourth rod is retracted between the front bracket and the push rod assembly, the rear bracket is located between the front bracket and the push rod assembly, and the end of the rear bracket provided with the rear wheel assembly is located with the rear wheel assembly. above the connection of the third rod.

According to some implementation aspects of the present invention, the cart frame further comprises a seventh rod extending in the front-rear direction of the cart and a connecting piece rotatably connected to the first rod and/or the third rod, the seventh rod The rear part of the rod is rotatably connected with the driving mechanism, and the connecting piece is also slidably connected with the seventh rod along the length direction of the seventh rod.

According to some implementation aspects of the present invention, the push rod assembly includes a lower push rod and an upper push rod whose lower part is rotatably connected to an upper portion of the lower push rod, and the driving mechanism and the first rod rotate with the lower push rod respectively connect.

According to some implementation aspects of the present invention, the rotational connection between the first rod and the push rod assembly is located above the rotational connection between the drive mechanism and the push rod assembly; the rotational connection between the first rod and the third rod is located above the rotational connection between the front bracket and the third rod; the rotational connection between the third rod and the front bracket is located above the rotational connection between the second rod and the front bracket; the third rod is connected to the The rotational connection of the rear bracket is located above the rotational connection of the fourth rod and the rear bracket.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art:

The third rod of the stroller of the present invention is rotatably connected between the rear bracket and the front bracket. When folded, the driving mechanism drives the fourth rod to drive the rear bracket to rotate closer to the third rod, and the second rod drives the front bracket to rotate relative to the third rod. Rotate closer and folded, the vehicle is small in size, takes up little space, and is easy to carry.

Description of drawings

1 is a schematic three-dimensional structure diagram of a stroller according to an embodiment of the present invention when it is in an unfolded state;

FIG. 2 is a schematic side view of a stroller according to an embodiment of the present invention when it is in an unfolded state;

3 is a schematic side view of a stroller according to an embodiment of the present invention when it is in a half-folded state;

4 is a schematic side view of a stroller according to an embodiment of the present invention when it is in a folded state;

5 is an exploded schematic diagram of a stroller according to an embodiment of the present invention;

In the figure: 1. Front wheel assembly; 2. Rear wheel assembly; 3. Front bracket; 4. Rear bracket; 5. Lower push rod; 6. Upper push rod; 7, First rod; 8, Second rod; 9 9, the third rod; 9a, the rod body; 9b, the connecting part; 10, the fourth rod; 11, the fifth rod; 12, the sixth rod; 13, the seventh rod; 14, the sliding piece; 15, the connecting piece;

a, the first axis; b, the second axis; c, the third axis; d, the fourth axis; e, the fifth axis; f, the sixth axis; g, the seventh axis; h, the eighth axis; i, ninth axis; j, tenth axis; k, eleventh axis; m, twelfth axis; n, thirteenth axis; o, fourteenth axis.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments of the description:

Referring to the child stroller shown in Figures 1 to 5, it includes a stroller frame with a folded state and an unfolded state, a front wheel assembly 1, a rear wheel assembly 2 and a locking mechanism for locking the stroller frame in the unfolded state, the stroller The frame includes a front support 3 with a front wheel assembly 1 at the lower end, a rear support 4 with a rear wheel assembly 2 at the lower end, and a push rod assembly.

In this example, the push rod assembly includes a lower push rod 5 and an upper push rod 6 , the lower portion of which is rotatably connected to the upper portion of the lower push rod 5 through a first shaft a.

The cart frame also includes a first rod 7 that is rotatably connected to the lower part of the lower push rod 5 through a second shaft b, a second rod 7 that extends in the front-rear direction of the cart and is rotatably connected to the front bracket 3 through a third shaft c. The rod 8 and the third rod 9 and the fourth rod 10 are rotatably connected to the rear bracket 4 through the fourth axis d and the fifth axis e respectively. The upper part of the bracket 3 and the lower part of the first rod 7 are rotatably connected.

The cart frame also includes a rotational connection with the second rod 8, the third rod 9, the fourth rod 10, and the lower push rod 5 through the eighth axis h, the ninth axis i, the tenth axis j, and the eleventh axis k, respectively. When folded, the driving mechanism drives the fourth rod 10 to drive the rear bracket 4 to rotate close to the third rod 9 , and the driving mechanism drives the second rod 8 to drive the front support 3 to rotate close to the third rod 9 .

In this example, the third rod 9 includes a rod body 9a extending in the front-rear direction of the cart and a connecting portion 9b fixed on the upper end of the rod body 9a. The upper portion of the front bracket 3 is connected to the connecting portion 9b through the sixth shaft f. The lower part is rotatably connected, and the lower part of the first rod 7 is rotatably connected with the upper part of the connecting part 9b through the seventh shaft g.

In this example, the driving mechanism includes a fifth rod 11 extending in the vertical direction of the cart, a sixth rod 12 extending in the front-rear direction of the cart, and a rod 12 slidably provided on the sixth rod 12 in the longitudinal direction of the sixth rod 12 Sliding member 14, the upper part of the fifth rod 11 is rotatably connected with the lower push rod 5 through the eleventh axis k, and the lower part of the fifth rod 11 is connected with the sliding member 14 and the fourth rod respectively through the twelfth axis m and the tenth axis j 10 is rotatably connected, the fifth rod 11 is also rotatably connected with the rod body 9a of the third rod 9 through the ninth axis i, and the front and rear ends of the sixth rod 12 are connected with the second rod through the eighth axis h and the thirteenth axis n respectively. The lever 8 and the lever body 9a of the third lever 9 are rotatably connected. In other embodiments, the driving mechanism may be a driving rod extending in the up-down direction of the cart and the upper part being rotatably connected with the lower push rod 5 , two of the lower part of the driving rod, the second rod 8 and the fourth rod 10 Rotationally connected, and the third is rotatably connected to one of the two, or the three are rotationally connected through the same pivot, and the drive rod is also rotatably connected to the third rod.

The sliding member 12 is slidably arranged between the connection of the second rod 8 and the sixth rod 12 and the connection of the third rod 9 and the sixth rod 12, that is, the sliding member 12 is slidably arranged on the eighth axis h and the thirteenth axis Between n; when the stroller is in the unfolded state, the connection between the lower push rod 5 and the fifth rod 11, the connection between the third rod 9 and the fifth rod 11, and the connection between the slider 14 and the fifth rod 11 , The connection points of the fourth rod 10 and the fifth rod 11 are distributed sequentially from top to bottom along the length direction of the fifth rod 11, that is, the eleventh axis k, the ninth axis i, the twelfth axis m, and the tenth axis j The extension directions of the fifth rods 11 are distributed sequentially from top to bottom.

The cart frame also includes a seventh rod 13 extending along the front-rear direction of the cart and a connecting piece 15 rotatably connected to the third rod 9 and the first rod 7 through the seventh shaft g. The rear of the seventh rod 13 is connected to the drive The fifth rod 11 of the mechanism is rotatably connected through the fourteenth axis o, and the connecting piece 15 is also slidably connected with the seventh rod 13 along the length direction of the seventh rod 13 . When the stroller of this example is used specifically, the seventh rod 13 can be used as a seat post, and the second rod 8 and the sixth rod 12 together form a basket rod for use. When the stroller is folded, the seventh rod 13 is folded between the front bracket 3 and the push rod assembly.

In this example, the first axis a, the second axis b, the third axis c, the fourth axis d, the fifth axis e, the sixth axis f, the seventh axis g, the eighth axis h, the ninth axis i, the The tenth axis j, the eleventh axis k, the twelfth axis m, the thirteenth axis n and the fourteenth axis o extend horizontally along the left and right directions of the stroller, and when the stroller is in the unfolded state, the front bracket 3, the sixth axis f is located on the third axis c; on the third rod 9, the seventh axis g is located above the sixth axis f, the seventh axis g, the ninth axis i, the thirteenth axis n and the fourth axis d is distributed in order from top to bottom; on the rear bracket 4, the fourth axis d is located above the fifth axis e; on the lower push rod 5, the first axis a, the second axis b and the eleventh axis k are in order from top to bottom Distribution; on the first rod 7, the second axis b is located above the seventh axis g; on the fifth rod 11, the eleventh axis k, the fourteenth axis o, the ninth axis i, the twelfth axis m, the tenth axis Axis j is distributed sequentially from top to bottom.

In other embodiments, the twelfth axis m and the tenth axis j may also be distributed along the front-rear direction of the cart.

In this example, the locking mechanism includes a first locking mechanism for relatively fixing the lower push rod 5 and the upper push rod 6 and a second locking mechanism for relatively fixing the lower push rod 5 and the fifth rod 11. The first locking mechanism The specific structures of the mechanism and the second locking mechanism are not limited, as long as the lower push rod 5 and the upper push rod 6 are relatively fixed, and the lower push rod 5 and the fifth rod 11 are relatively fixed. In other embodiments, the second locking mechanism may also be arranged between any other two mutually rotating rods.

The folding principle of the stroller in this example:

As shown in Figures 1 and 2, the locking mechanism locks the stroller in the unfolded state. When the stroller needs to be folded, the first locking mechanism and the second locking mechanism are unlocked. As shown in Figure 3, the upper push rod 5 is folded. and the lower push rod 6, and press down the push rod assembly, so that the first rod 7 rotates backward and downward and moves closer to the third rod 9, the upper part of the fifth rod 11 rotates backward and downward around the ninth axis i, and drives the sliding member 14 On the sixth rod 12, it slides in the direction close to the connection between the sixth rod 12 and the second rod 8 (ie, the eighth axis h), and at the same time, the sliding member 14 also moves upward under the rotation of the fifth rod 11 to drive the fourth rod 11. The rod 10 drives the rear support 4 to rotate and move closer to the third rod 9, and at the same time, drives the second rod 8 to drive the front support 4 to rotate and move closer to the third rod 9, and finally completes the folding of the whole vehicle. The folded cart is shown in Figure 4 , the front bracket 3 , the third rod 9 , the first rod 7 , and the push rod assemblies are distributed in sequence along the front and rear directions of the cart. , the fourth rod 10 and the seventh rod 13 are gathered between the front bracket 3 and the push rod assembly, the rear bracket 4 is located between the front bracket 3 and the push rod assembly, and the end of the rear bracket 4 with the rear wheel assembly 2 is located at Above the connection with the third rod 9 . After the whole vehicle is folded, the volume is small, the space is small, and it is easy to carry.

In other embodiments, the second locking mechanism can also be unlocked first, the push rod assembly can be pressed down, the other rods of the cart frame can be folded first, then the first locking mechanism can be unlocked, the upper push rod and the lower push rod can be folded, and the final result is completed. The vehicle is folded.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with the art to understand the content of the present invention and implement them accordingly, and cannot limit the scope of protection of the present invention with this. Equivalent changes or modifications made in the spirit and spirit should all be included within the protection scope of the present invention.

Claims (10)

1. A children's stroller, comprising a stroller frame having a folded state and an unfolded state, a front wheel assembly, a rear wheel assembly, and a locking mechanism for locking the stroller frame in the unfolded state, the stroller frame comprising The lower end is provided with a front bracket of the front wheel assembly, the lower end is provided with a rear bracket of the rear wheel assembly, a push rod assembly, a first rod rotatably connected to the push rod assembly and rotatably connected to the front bracket The second rod is characterized in that: the cart frame further comprises a third rod and a fourth rod respectively rotatably connected with the rear bracket, two of the third rod, the front bracket and the first rod The first is rotationally connected, and the third is rotationally connected to one of the two, or the three are rotationally connected through the same pivot. , a fourth rod, and a driving mechanism that is rotatably connected to the push rod assembly. When folded, the driving mechanism drives the fourth rod to drive the rear bracket to rotate and move closer to the third rod. 2 . The stroller according to claim 1 , wherein when the stroller is in the unfolded state, the connection between the push rod assembly and the driving mechanism, the connection between the third rod and the driving mechanism, The connection points between the second rod and the driving mechanism or the connection points between the fourth rod and the driving mechanism are sequentially distributed along the up-down direction of the cart. 3 . The stroller according to claim 1 , wherein the driving mechanism comprises a fifth rod extending in the up-down direction of the stroller, a sixth rod extending in the front-rear direction of the stroller, and a fifth rod extending along the The length direction of the six rods is slidably arranged on the sliding member on the sixth rod, the upper part of the fifth rod is rotatably connected with the push rod assembly, and the lower part of the fifth rod is respectively connected with the sliding member and the fourth rod. The rod is rotatably connected, the fifth rod is also rotatably connected with the third rod, and the two ends of the sixth rod are respectively rotatably connected with the second rod and the third rod. 4 . The stroller according to claim 3 , wherein the sliding member is slidably arranged at the connection between the second rod and the sixth rod, and the connection between the third rod and the sixth rod. 5 . between. 5 . The stroller according to claim 3 , wherein when the stroller is in the unfolded state, the connection between the push rod assembly and the fifth rod, and the connection between the third rod and the fifth rod. 6 . , the connection between the sliding member and the fifth rod, and the connection between the fourth rod and the fifth rod are sequentially distributed from top to bottom along the length direction of the fifth rod. 6 . The stroller according to claim 1 , wherein the driving mechanism is a driving rod extending in the up-down direction of the stroller and the upper part of which is rotatably connected with the push rod assembly, and the lower part of the driving rod, Two of the second lever and the fourth lever are rotationally connected, and the third is rotationally connected to one of the two, or the three are rotationally connected through the same pivot, and the drive lever is also connected to The third rod is rotatably connected. 7. The stroller according to any one of claims 1 to 6, wherein when the stroller is in a folded state, the front bracket, the third rod, the first rod, and the push rod assembly Distributed in sequence along the front and rear directions of the cart, the drive mechanism, the second rod and the fourth rod are gathered between the front bracket and the push rod assembly, and the rear bracket is located between the front bracket and the push rod assembly and The end of the rear bracket where the rear wheel assembly is provided is located above the connection with the third rod. 8. The stroller according to any one of claims 1 to 6, wherein the stroller frame further comprises a seventh rod extending along the front-rear direction of the stroller and a seventh rod rotatably connected to the first A connecting piece on a rod and/or a third rod, the rear part of the seventh rod is rotatably connected with the driving mechanism, and the connecting piece also slides with the seventh rod along the length direction of the seventh rod connect. 9 . The stroller according to claim 1 , wherein the push rod assembly comprises a lower push rod and an upper push rod whose lower part is rotatably connected to the upper part of the lower push rod. 10 . , the driving mechanism and the first rod are respectively rotatably connected with the lower push rod. 10 . The stroller according to claim 1 , wherein the rotational connection between the first rod and the push rod assembly is located at the rotational connection between the drive mechanism and the push rod assembly. 11 . The rotational connection between the first rod and the third rod is above the rotational connection between the front bracket and the third rod; the rotational connection between the third rod and the front bracket is located at the second above the rotational connection between the rod and the front bracket; the rotational connection between the third rod and the rear bracket is located above the rotational connection between the fourth rod and the rear bracket.

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