CN207955754U - Children trolley - Google Patents

Abstract

The utility model discloses a stroller for children. The side brackets on each side of the stroller frame all include a front bracket, a rear bracket and a push rod whose ends are mutually rotatable and connected. The side brackets on each side also include a The front link is pivotally connected to the front bracket, the upper link is extended in the vertical direction and the upper part is pivotally connected to the push rod, the pivot is connected to the rear bracket and the front part is connected to the rear part of the front link. A pivotally connected rear link, and a seat post assembly, wherein the seat post assembly includes a front seat post pivotally connected to the upper part of the rear bracket and a rear seat post slidably arranged relative to the front seat post, the rear part of the rear link, the rear seat post Two of these three are pivotally connected to the rear portion of the upper link and the lower end of the upper link, and the third is pivotally connected to one of the aforementioned two or the three are connected to rotate around the same rotation center line. The cart frame has a simple structure, and the folding operation is also very simple and convenient. The folded cart frame is overall flat and neat, and the volume is small enough to be convenient for transportation and carrying.

Description

stroller

technical field

The utility model relates to a stroller for children.

Background technique

Strollers play an important role for users to travel with infants and young children in daily life, and have become one of the indispensable children's products in the process of children's growth. In the prior art, the structures of children's strollers are various, and the connection relationship of each rod is also different. The load-bearing stability of the stroller, the way of installing the seat, the folding method and folding principle of the frame are also different. The shape and volume after folding are also different. How to make the children's stroller have a good bearing capacity, the structure of the bar is simpler, the folding operation is more convenient, and the folded volume is smaller, which has always been the goal pursued by those skilled in the art.

Contents of the invention

The purpose of the utility model is to provide a children's stroller with simple structure, convenient folding operation, flat folding and small volume.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a children's stroller, including a stroller frame in an unfolded state and a folded state, a front wheel assembly arranged at the bottom front of the stroller frame, and a a rear wheel assembly at the bottom rear of the cart frame, and a locking mechanism for locking the cart frame in the unfolded state, the cart frame includes two Side brackets and cross brace assemblies connected between the side brackets on both sides, the side brackets on each side include front brackets, rear brackets and push rods extending in the up and down direction respectively, the upper part of the front bracket, the rear bracket Two of the three parts, the upper part of the bracket and the lower part of the push rod, are pivotally connected and the third part is pivotally connected to one of the aforementioned two parts, or the three parts revolve around the same center of rotation The lines are rotationally connected together,

The side brackets on each side further include a front link extending in a front-rear direction and having a front portion pivotally connected to the front bracket, an upper link extending in a vertical direction and having an upper portion pivotally connected to the push rod, a rear link pivotally connected to the rear bracket and having a front portion pivotally connected to a rear portion of the front link, and a seat post assembly, wherein the seat post assembly includes a seat post assembly pivotally connected to the The front seat post on the upper part of the rear bracket and the rear seat post which is slidably arranged relative to the front seat post, the rear part of the rear link, the rear part of the rear seat post and the lower end of the upper link The two are pivotally connected and the third is pivotally connected to one of the aforementioned two, or the rear of the rear link, the rear of the rear seat post and the lower end of the upper link These three are rotationally connected about the same rotational center line.

Preferably, on the side brackets on each side, a four-bar linkage mechanism is formed between the front bracket, rear bracket, front connecting rod and rear connecting rod, and a four-bar linkage mechanism is formed between the seatpost assembly, rear connecting rod and rear bracket. The slider crank mechanism, when the stroller frame is folded, the rear seat post slides backward relative to the front seat post, and the push rod turns backward and is folded on the rear side of the rear bracket.

Preferably, the front seat post on the seat post assembly is a sliding sleeve rod, and the front part of the rear seat post is slidably inserted in the sliding sleeve rod along the length extension direction of the sliding sleeve rod.

Preferably, the upper part of the front bracket is pivotally connected with the upper part of the rear bracket through a first shaft, the lower part of the push rod is pivotally connected with the upper part of the rear bracket through a second shaft, and the first The axis line of the first axis and the axis line of the second axis extend parallel to or collinear; the lower part of the upper link is pivotally connected to the rear seatpost through the third axis, and the rear of the rear link The part and the rear seat post are pivotally connected by a fourth shaft, and the axis line of the third shaft and the axis line of the fourth shaft extend parallel to each other or co-linearly.

Further, the rear support includes a rear support rod extending upward from the rear and a connecting rod fixed on the upper part of the rear support and extending upward from the front to the rear, the upper part of the front support passes through the first A shaft is pivotally connected to the lower part of the connecting rod, and the lower part of the push rod is pivotally connected to the upper part of the connecting rod through the second shaft.

Furthermore, the front seat post in the seat post assembly is pivotally connected to the connecting rod through a fifth shaft, and the fifth shaft is located between the first shaft and the second shaft on the connecting rod. between the two shafts, and the fifth shaft is located at the position where the connecting rod connects with the rear support rod.

Further, the rear link is pivotally connected to the rear bracket through a sixth axis, and the front part of the rear link is pivotally connected to the rear part of the front link through a seventh axis; The front part of the front link is pivotally connected to the front bracket through the eighth shaft, and the eighth shaft is located below the first shaft on the front bracket; the upper part of the upper link is connected through the ninth shaft. A shaft is pivotally connected to the push rod, and the ninth shaft is positioned above the second shaft on the push rod.

Preferably, a set of said front wheel assemblies is provided on the lower part of said front bracket on each side, and a set of said rear wheel assemblies are provided on the lower part of said rear bracket on each side, said front wheel assemblies on both sides The left-to-right spacing between them is greater than the left-to-right spacing between the rear wheel assemblies on both sides. When the front bracket and the rear bracket are folded in the front-to-back direction, the two groups of rear wheel assemblies are folded in the left-right direction. between the aforementioned front wheel assemblies.

Preferably, the cross brace assembly can be folded along the left and right directions and arranged between the side brackets on both sides, and the cross brace assembly includes front brace assemblies and/or A rear strut assembly, wherein the front strut assembly is arranged between the front brackets on both sides and the front parts of the front seatposts on both sides, and the rear strut assembly is arranged on the rear Between the bracket and the front part of the rear link on both sides.

Further, the rear brace assembly is a rear cross brace assembly, and the rear cross brace assembly includes two rear braces pivotally connected in the middle, and one end of each rear brace is rotatably connected to a The lower part of the rear bracket on one side and its other end are rotatably connected to the front part of the rear link on the other side, and the position where the rear brace is rotatably connected to the rear link is at the rear link The rod is located in front of the pivotal connection position between the front link and the rear link; the front strut assembly is a front cross brace assembly, and the front cross brace assembly includes two pivotally connected Front struts, one end of each front strut is rotatably connected to the lower part of the front bracket on one side and the other end is rotatably connected to the front of the other front seatpost, and the The pivotal connection of the front strut to the front seatpost is forward on the front seatpost of the pivotal connection of the front seatpost to the rear bracket.

Due to the application of the above-mentioned technical solution, the utility model has the following advantages compared with the prior art: the children's stroller of the utility model adopts a new structure and a folding principle of the stroller frame structure, so that the stroller frame is unfolded In the state, it presents a very simple structure, and at the same time has good stability. The folding operation of the cart frame is also very simple and convenient.

Description of drawings

Accompanying drawing 1 is the three-dimensional view one under the expanded state of the children's stroller of the present utility model;

Accompanying drawing 2 is the three-dimensional view two under the expanded state of the children's stroller of the present utility model;

Accompanying drawing 3 is the side view of the expanded state of the children's stroller of the present invention;

Accompanying drawing 4 is the three-dimensional view one under half-folded state of children's stroller of the present utility model;

Accompanying drawing 5 is the three-dimensional view II of the half-folded state of the children's stroller of the present invention;

Accompanying drawing 6 is the side view of the half-folded state of the children's stroller of the present invention;

Accompanying drawing 7 is the three-dimensional view one under the folded state of the children's stroller of the present utility model;

Accompanying drawing 8 is the three-dimensional view II of the folded state of the children's stroller of the present invention;

Accompanying drawing 9 is the side view of the folded state of the children's stroller of the present invention;

Among them: 100, side bracket; 20, front wheel assembly; 30, rear wheel assembly; 1, front bracket; 2, rear bracket; 21, rear support rod; 22, connecting rod; 3, push rod; 4, front connecting rod ; 83. Second connector; 9. Rear strut assembly; 91. Rear strut; 92. Third connector; 93. Fourth connector; 11. First shaft; 12. Second shaft; 13. Third axis; 14, the fourth axis; 15, the fifth axis; 16, the sixth axis; 17, the seventh axis; 18, the eighth axis; 19, the ninth axis.

Detailed ways

The technical solution of the present utility model will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

In the following descriptions about directions, the front, back, left, and right directions observed by the operator when the stroller is pushed and used are all defined as reference.

Referring to the children's stroller shown in Fig. 1 to Fig. 9, it includes a stroller frame with an unfolded state and a folded state, a front wheel assembly 20 located at the bottom front of the stroller frame, and a front wheel assembly 20 located at the bottom of the stroller frame. The rear wheel assembly 30 of the part, and the locking mechanism for locking the cart frame in the unfolded state, the cart frame includes two side brackets 100 respectively arranged on the left and right sides and connected between the side brackets 100 on both sides Between the cross brace components.

Referring to Fig. 1 to Fig. 3, the side bracket 100 on each side includes a front bracket 1, a rear bracket 2 and a push rod 3 respectively extending in the up and down direction, the upper part of the front bracket 1, the upper part of the rear bracket 2 and the push rod 3 Two of the three lower parts are pivotally connected and the third part is pivotally connected to one of the aforementioned two parts, or the above three parts are pivotally connected about the same rotational center line.

The side bracket 100 on each side also includes a front link 4, a rear link 5, an upper link 6 and a seatpost assembly 7, wherein the front link 4 extends along the front-to-back direction, and its front part is pivotally connected to the front bracket 1 The upper link 6 extends in the up-down direction and its upper pivot is connected to the push rod 3; the rear link 5 is pivotally connected to the rear bracket 2, and the rear link 5 has a front portion and Located at the rear portion of the rear side of the rear bracket 2, the front portion of the rear link 5 is pivotally connected to the rear portion of the front link 4; the seat post assembly 7 includes a front seat post 71 pivotally connected to the top of the rear bracket 2 and an opposite front seat The rod 71 is slidably disposed on the rear seat post 72, and two of the lower portion of the upper link 6, the rear portion of the rear link 5, and the rear portion of the rear seat post 72 are pivotally connected and the third is pivotally connected. On one of the aforementioned two, or the lower part of the upper link 6, the rear part of the rear link 5, and the rear part of the rear seatpost 72 are rotationally connected around the same rotational center line.

As shown in Figures 1 to 3, in this embodiment, the upper part of the front bracket 1 is pivotally connected to the upper part of the rear bracket 2 through the first shaft 11, and the lower part of the push rod 3 is connected to the rear bracket 2 through the second shaft 12. The upper part is pivotally connected, and the axis lines of the first axis 11 and the second axis 12 are parallel to each other and are respectively arranged on the front and rear sides of the rear bracket 2 . Here, specifically, the rear bracket 2 is T-shaped, which includes a rear support rod 21 extending upward from the rear and a connecting rod 22 fixed on the upper part of the rear support rod 21 and extending upward from the front to the rear. The upper part of the bracket 1 is pivotally connected to the lower end of the connecting rod 22 through the first shaft 11 , and the lower end of the push rod 3 is pivotally connected to the upper end of the connecting rod 22 through the second shaft 12 . Of course, in some embodiments, the axis lines of the first shaft 11 and the second shaft 12 can also be set to extend co-linearly.

As shown in Figures 1 to 3, in this embodiment, the lower part of the upper link 6 is pivotally connected to the rear of the rear seat post 72 through the third shaft 13, and the rear part of the rear link 5 is connected to the rear seat post 72. The rear parts are pivotally connected by a fourth shaft 14 , and the axis line of the third shaft 13 and the axis line of the fourth shaft 14 are co-linearly arranged. Of course, in some embodiments, the axes of the third axis 13 and the fourth axis 14 can also be set to be parallel to each other.

1 to 3, in this embodiment, on the side bracket 100 on each side, on the seatpost assembly 7, the front seatpost 71 adopts a sliding sleeve rod, and the front part of the rear seatpost 72 is along the front of the front seatpost 71. The length extension direction is slidably inserted in the front seat post 71, so that the rear seat post 72 can be stretched in the front and rear direction relative to the front seat post 71; the front seat post 71 is pivotally connected to the connecting rod 22 of the rear bracket 2 through the fifth shaft 15, The fifth shaft 15 is located between the first shaft 11 and the second shaft 12 on the connecting rod 22 . Here, the fifth shaft 15 is located at the position where the connecting rod 22 meets the rear strut 21 .

In this embodiment, on each side bracket 100, the rear link 5 is pivotally connected to the rear bracket 2 through the sixth shaft 16, and the front part of the rear link 5 and the rear part of the front link 4 are connected through the seventh shaft. The shaft 17 is pivotally connected; the front part of the front link 4 is pivotally connected to the front bracket 1 through the eighth shaft 18, and the eighth shaft 18 is located below the first shaft 11 on the front bracket 1; the upper link 6 The upper part of the upper part is pivotally connected to the push rod 3 by a ninth shaft 19 which is located above the second shaft 12 on the push rod 3 .

Like this, referring to shown in accompanying drawing 3, on the side support 100 of each side, form four-bar linkage mechanism between front support 1, rear support 2, front link 4 and rear link 5, seat post assembly 7, rear link A slider crank mechanism is formed between 5 and the rear support 2. When the cart frame is locked in the unfolded state, the front bracket 1, the connecting rod 22, and the push rod 3 extend roughly along the same length direction, and the front connecting rod 4, the rear connecting rod 5, and the upper connecting rod 6 are connected with the front bracket 1, the connecting rod. 22 and the push rod 3 form a large stable triangular structure; between the seat post assembly 7 and the push rod 3 and the upper link 6, and between the seat post assembly 7 and the rear link 5 and the rear bracket 2 respectively form a With a small triangular structure, the deployed side bracket 100 presents a very stable structure with good bearing stability. When the stroller frame is folded, when the push rod 3 turns backwards, the lower part of the upper link 6 goes down to drive the rear seat post 72 to slide backward relative to the front seat post 71, and at the same time, the seat post assembly 7 rotates relative to the rear support 2, thereby The rods in the slider crank mechanism and the four-bar linkage mentioned above are driven to move relative to each other so that the rods in the side bracket 100 are gradually gathered together to realize the folding of the side bracket 100 .

Referring to the drawings, the cross-bracing assembly connected between the side brackets 100 on both sides can be folded and arranged between the side brackets 100 on both sides along the left and right directions. The cross brace assembly includes a front strut assembly 8 and/or a rear strut assembly 9 that can be expanded and folded in the left and right directions, wherein the front strut assembly 8 is arranged on the front brackets 1 on both sides and the front seat post on both sides. 71, the rear strut assembly 9 is arranged between the rear brackets 2 on both sides and the front parts of the rear connecting rods 5 on both sides.

Specifically, as shown in Fig. 1 and Fig. 2, the front brace assembly 8 is a front cross brace assembly, and the front cross brace assembly includes two front braces 81 pivotally connected in the middle, and one end of the front brace 81 The first connecting piece 82 is rotatably connected to the lower part of one side of the front bracket 1, and its other end is rotatably connected to the front portion of the other side of the front seatpost 71 through the second connecting piece 83. Here, the first connecting piece 82 Arranged at the eighth shaft 18 , the second connecting member 83 is located in front of the fifth shaft 15 in the lengthwise extension direction of the front seatpost 71 .

The rear brace assembly 9 here is a rear cross brace assembly, which includes two rear braces 91 pivotally connected in the middle, and one end of each rear brace 91 rotates through a third connecting piece 92 It is connected to the front part of the rear link 5 on one side, and its other end is connected to the bottom of the rear bracket 2 on the other side through the fourth connecting piece 93. Here, the third connecting piece 92 is connected to the rear link 5. The length extension direction is located in front of the seventh axis 17 , and the fourth connecting member 93 is located below the sixth axis 16 on the rear bracket 2 .

Referring to the accompanying drawings, on the side brackets 100 on each side, a group of front wheel assemblies 20 are provided at the bottom of the front bracket 1, and a group of rear wheel assemblies 30 are provided at the bottom of the rear bracket 2. state, the left-right spacing between the two groups of front wheel assemblies 20 is greater than the left-right spacing between the rear wheel assemblies 30 on both sides. Such setting can make the steering of the front wheel assembly 20 more flexible in the process of pushing the cart frame, and the pushing operation is more convenient and labor-saving. When the stroller frame is folded, the front support 1 and the rear support 2 move closer together along the front-to-back direction, and the two groups of rear wheel assemblies 30 are folded between the two groups of front wheel assemblies 20 along the left-right direction.

In this way, when the stroller frame is unfolded, as shown in FIGS. Between the side brackets 100 on the side to provide the support of the stroller frame in the left and right direction.

When the cart frame needs to be folded, as shown in Figure 4 to Figure 6, when the push rod 3 is pressed down, it is turned backward relative to the rear bracket 2, so that the upper link 6 goes down and drives the rear seat post 72 relative to the front seat post 71 slides out backward, and the front seatpost 71 turns backward around the fifth axis 15, so that the rear connecting rod 5 turns backward relative to the rear bracket 2 around the sixth axis 16, and the rear part of the front connecting rod 4 moves upward accordingly and drives the front The bracket 1 and the rear bracket 2 are gradually gathered along the front and rear directions, so that the front bracket 1 and the push rod 3 are respectively gathered on the front and rear sides of the rear bracket 2 . In the process of relative rotation and folding of the rods on the side brackets 100 on both sides, the two front struts 81 of the front strut assembly 8 are relatively rotated and folded, and the two rear struts 91 of the rear strut assembly 9 are relatively rotated. Folding, so that the side supports 100 on both sides are gradually gathered in the left and right directions.

Finally, the rods of each side bracket 100 are rotated and folded respectively, and the side brackets 100 on both sides are folded in the left and right directions, and the two rear wheel assemblies 30 are folded between the two front wheel assemblies 20, forming the shape shown in Figures 7 to 9. As shown in the structure, the folded cart frame structure is very flat and compact, and can also stand on the ground to reduce the occupied space and facilitate transportation and portability.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present utility model, and its purpose is to allow those familiar with this technology to understand the content of the utility model and implement it accordingly, and not to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (10)

1. A stroller for children, comprising a stroller frame with an unfolded state and a folded state, a front wheel assembly disposed at the bottom front of the stroller frame, a rear wheel assembly disposed at the bottom rear of the stroller frame wheel assembly, and a locking mechanism for locking the cart frame in the unfolded state, the cart frame includes two side brackets arranged on the left and right sides and connected between the side brackets on both sides The cross-bracing assembly between each side, the side brackets on each side include front brackets, rear brackets and push rods extending in the up and down direction, the upper part of the front bracket, the upper part of the rear bracket and the lower part of the push rod. Two of the parts are pivotally connected and the third part is pivotally connected to one of the aforementioned two parts, or the three parts are connected together in rotation around the same rotation center line, characterized in that: The side brackets on each side further include a front link extending in a front-rear direction and having a front portion pivotally connected to the front bracket, an upper link extending in a vertical direction and having an upper portion pivotally connected to the push rod, a rear link pivotally connected to the rear bracket and having a front portion pivotally connected to a rear portion of the front link, and a seat post assembly, wherein the seat post assembly includes a seat post assembly pivotally connected to the The front seat post on the upper part of the rear bracket and the rear seat post which is slidably arranged relative to the front seat post, the rear part of the rear link, the rear part of the rear seat post and the lower end of the upper link The two are pivotally connected and the third is pivotally connected to one of the aforementioned two, or the rear of the rear link, the rear of the rear seat post and the lower end of the upper link These three are rotationally connected about the same rotational center line. 2. The stroller according to claim 1, characterized in that: on the side brackets on each side, a four-bar linkage mechanism is formed between the front bracket, the rear bracket, the front connecting rod and the rear connecting rod, so that A slider crank mechanism is formed between the seat post assembly, the rear connecting rod and the rear bracket. When the cart frame is folded, the rear seat post slides backward relative to the front seat post, and the push rod moves backward Flip and tuck over the back side of the rear stand. 3. The stroller according to claim 1, wherein the front seat post on the seat post assembly is a sliding sleeve rod, and the front portion of the rear seat post extends along the length of the sliding sleeve rod Slidingly inserted in the sliding sleeve rod in one direction. 4. The stroller according to claim 1, wherein the upper part of the front bracket is pivotally connected to the upper part of the rear bracket through a first shaft, and the lower part of the push rod is connected to the upper part of the rear bracket through a second shaft. The upper part of the rear bracket is pivotally connected, and the axis line of the first shaft and the axis line of the second shaft extend parallel to or co-linearly with each other; the lower part of the upper link is pivotally connected to the On the rear seat post, the rear part of the rear connecting rod is pivotally connected to the rear seat post through a fourth shaft, and the axis line of the third shaft and the axis center of the fourth shaft The lines run parallel or co-linearly with each other. 5. The children's stroller according to claim 4, characterized in that: the rear support includes a rear support rod extending upwardly from the rear to the front, and a rear support rod fixed on the upper part of the rear support rod and extending upwardly from the front to the rear The upper part of the front bracket is pivotally connected to the lower part of the connecting rod through the first shaft, and the lower part of the push rod is pivotally connected to the upper part of the connecting rod through the second shaft. 6. The children's stroller according to claim 5, wherein the front seatpost of the seatpost assembly is pivotally connected to the connecting rod by a fifth axis, the fifth axis being in the The connecting rod is located between the first shaft and the second shaft, and the fifth shaft is located at a position where the connecting rod connects with the rear support rod. 7. The children's stroller according to claim 4, wherein the rear link is pivotally connected to the rear bracket through a sixth axis, and the front part of the rear link is connected to the front link The rear part of the connecting rod is pivotally connected by the seventh shaft; the front part of the front link is pivotally connected to the front bracket by the eighth shaft, and the eighth shaft is located on the first below the shaft; the upper part of the upper link is pivotally connected to the push rod through a ninth shaft, and the ninth shaft is located above the second shaft on the push rod. 8. The stroller according to claim 1, characterized in that: the lower part of the front bracket on each side is provided with a set of front wheel assemblies, and the lower part of the rear bracket on each side is provided with a set of For the rear wheel assembly, the left-right distance between the front wheel assemblies on both sides is greater than the left-right distance between the rear wheel assemblies on both sides. When the front bracket and the rear bracket are folded in the front-to-back direction, the two The set of rear wheel assemblies is folded between the two sets of front wheel assemblies along the left and right direction. 9. The children's stroller according to any one of claims 1 to 8, wherein the cross brace assembly is arranged between the side brackets on both sides so as to be foldable along the left and right directions, and the cross brace assembly The strut assembly includes a front strut assembly and/or a rear strut assembly which can be expanded and folded in the left and right directions, wherein the front strut assembly is arranged in front of the front brackets on both sides and the front seat post on both sides. Between the parts, the rear strut assembly is arranged between the rear brackets on both sides and the front parts of the rear connecting rods on both sides. 10. The children's stroller according to claim 9, wherein the rear brace assembly is a rear cross brace assembly, and the rear cross brace assembly includes two rear braces pivotally connected in the middle, each One end of the rear strut is rotatably connected to the lower part of the rear bracket on one side and the other end is rotatably connected to the front of the rear link on the other side, and the rear strut and the The position where the rear link is rotatably connected is located on the rear link in front of the pivotal connection position between the front link and the rear link; the front strut assembly is a front cross support assembly, and the The front cross support assembly includes two front struts pivotally connected in the middle, one end of each front strut is rotatably connected to the lower part of the front bracket on one side and the other end is rotatably connected to The front part of the front seat post on the other side, and the position where the front strut is rotatably connected to the front seat post is located on the front seat post at the position where the front seat post is pivotally connected to the rear bracket ahead.