CN208198531U - Children trolley - Google Patents

Abstract

The utility model discloses a kind of children trolleys, each side side stand of its stroller frame includes the front support rod that updip extends from front to back, the back stay that updip extends from back to front, the bottom connecting rod extended along the longitudinal direction, and the side connecting rod respectively vertically extended, back stay and push rod, wherein, front component is set to the lower part of the front support rod, wheel assembly is set to the lower part of back stay, between the front component of two sides in left-right direction on spacing be greater than two sides wheel assembly between in left-right direction on spacing, when stroller frame is in folded state, the front support rod on side stand described in each side, back stay collapses along the longitudinal direction, wheel assembly described in two groups be located at two groups in left-right direction described between front component, front support rod in stroller frame is closely collapsed together with back stay, it is pushed away compared to traditional children For vehicle, folding volume has obtained further reduction, brings convenience for daily storage, the carrying use of user.

Description

stroller

technical field

The utility model relates to a stroller for children.

Background technique

In the prior art, there are various structures of children's strollers, which generally include a stroller frame with an unfolded state and a folded state, a wheel assembly located at the bottom of the stroller frame, and a wheel assembly for locking the stroller frame when it is unfolded. state of the locking mechanism. At present, there are many types of stroller frames for children's strollers, the number of rods of the stroller frames is different, and the connection relationship and connection position between the rods are different, so the folding principles and folding methods are also different. How to simplify the structure of the stroller frame and how to simplify the folding method of the stroller frame under the premise of ensuring the stable carrying of children is always 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 and small folding 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 stroller frame, and a locking mechanism for locking the stroller frame in an unfolded state, the stroller frame includes two side panels arranged on the left and right sides The side brackets on each side include: a front strut extending upwardly from front to rear, a rear strut extending upwardly from rear to front, a bottom link extending along the front-rear direction, and each extending along the up-down direction side links, rear pull rods and push rods, wherein the upper part of the front support rod is pivotally connected to the upper part of the rear support rod through a first shaft, and the lower part of the side link is connected to the rear support rod The upper part of the side link is pivotally connected by the second shaft, and the axis line of the first shaft and the axis line of the second shaft extend parallel or co-linearly with each other; the upper part of the side link is pivoted by the third shaft connected to the push rod, the rear pull rod is pivotally connected to the rear support rod through the fourth shaft, and the upper part of the rear pull rod is pivotally connected to the lower part of the push rod through the fifth shaft, so The front part of the bottom link is pivotally connected to the front strut by the sixth axis, the rear part of the bottom link is pivotally connected to the lower part of the rear tie rod by the seventh axis, and the first The axis lines of the three axes, the fourth axis, the fifth axis, the sixth axis, the seventh axis and the first axis are parallel to each other,

The front wheel assembly is arranged on the lower part of the front pole, the rear wheel assembly is arranged on the lower part of the rear pole, and the distance between the front wheel assemblies on both sides along the left and right direction is greater than that on both sides. The distance between the rear wheel assemblies along the left and right direction, when the cart frame is in the folded state, the front struts and rear struts on the side brackets on each side are folded in the front and rear direction, and the rear struts of the two groups are The wheel assembly is located between the two sets of front wheel assemblies in the left-right direction.

Preferably, a first four-bar linkage mechanism is formed between the front support rod, rear support rod, rear tie rod and bottom link, and a second four-bar linkage mechanism is formed between the side link, push rod, rear tie rod and rear support rod. In the link mechanism, when the stroller frame is folded, the rear tie rod turns backward around the fourth axis relative to the rear support rod and is folded on the rear side of the rear support rod.

Further, when the stroller frame is in the folded state, a support point is formed at the pivot connection between the lower part of the push rod and the upper part of the rear pull rod, and the support point is jointly supported by the rear wheel assembly on the ground so that the cart frame can stand on the ground.

Preferably, when the trolley frame is in the unfolded state, the third shaft is located above the fifth shaft on the push rod; the seventh shaft and the fifth shaft are separately arranged on the The front and rear sides of the rear strut.

Preferably, the axis of the first shaft and the axis of the second shaft are arranged parallel to each other.

Preferably, said side brackets on each side further comprise a seatpost assembly comprising a seatpost extending in a front-to-rear direction and a slider pivotally connected to said side link, the rear of said seatpost The seat post is pivotally connected to the rear tie rod through an eighth shaft, and the seat post is slidably connected to the slider along its own length.

Further, the sliding member is a sliding sleeve that is pivotally connected to the side connecting rod through a ninth shaft, and the ninth shaft is located between the second shaft and the second connecting rod along the vertical direction on the side connecting rod. Between the three shafts; the eighth shaft is located between the fourth shaft and the fifth shaft on the rear tie rod.

Further, the side brackets on each side also include an armrest assembly, the armrest assembly includes a front armrest bar and a rear armrest bar that are relatively sliding and telescopic along the length direction, and the front armrest bar is pivotally connected to the On the side link, the rear of the rear armrest bar is pivotally connected to the rear tie rod through the eleventh axis, wherein the tenth axis is located on the side link between the ninth axis and the Between the third shaft, the eleventh shaft is located between the fifth shaft and the eighth shaft on the rear pull rod.

Preferably, the stroller frame further includes a cross brace assembly arranged between the side supports on both sides, the cross brace assembly includes a rear cross bar connected between the lower parts of the rear support bars on both sides, and /or the front cross bar connected between the lower parts of the front struts on both sides, and/or the middle cross bar connected between the rear pull bars on both sides, and/or the upper part of the push rod connected on both sides between the upper rails.

Further, the rear cross bar is provided between the lower parts of the rear support rods on both sides, the brake lever assembly is also provided between the rear wheel assemblies on both sides, and the lower part of the front support rods on both sides The front cross bar is arranged between them, and when the cart frame is in a folded state, the front cross bar is located in front of the rear support bar.

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 has a small number of rods, a simple structure, and the folding operation is simple and convenient. The rear wheel assemblies on both sides can be folded between the front wheel assemblies on both sides along the left and right directions, so that the front struts and rear struts on the stroller frame can be tightly folded together, compared with traditional strollers , its folding volume has been further reduced, which brings convenience to users' daily storage and carrying.

Description of drawings

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

Accompanying drawing 2 is the side view one under the expanded state of the children's stroller of the present utility model;

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

Accompanying drawing 4 is the front view of the expanded state of the children's stroller of the present utility model;

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

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

Among them: 100, side bracket; 1, front support rod; 2, rear support rod; 3, bottom connecting rod; 4, side connecting rod; 5, rear tie rod; 6, push rod; 7, seat post assembly; 72, seat post; 8, armrest assembly; 81, front armrest bar; 82, rear armrest bar; 9, unlocking operation part; 10, front wheel assembly; 20, rear wheel assembly;

101, front cross bar; 201, rear cross bar; 202, brake lever assembly; 501, middle cross bar; 601, upper cross bar; 801, armrest cross bar; 11, first axis; 12, second axis; 13, The 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; 110, the tenth axis; 111, the tenth axis one 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.

Referring to the children's stroller shown in Figures 1 to 6, it includes a stroller frame with an expanded state and a folded state, a front wheel assembly 10 located at the bottom front of the stroller frame, and a front wheel assembly 10 located at the bottom rear of the stroller frame. The rear wheel assembly 20, and a locking mechanism for locking the stroller frame in an unfolded state.

Referring to Fig. 1 to Fig. 4, the stroller frame includes two side supports 100 respectively arranged on the left and right sides, and each side support 100 includes: a front strut 1 extending upwardly from front to back, The rear strut 2 extending upwardly, the bottom link 3 extending in the front-rear direction, the side link 4 extending in the up-down direction, the rear tie rod 5 and the push rod 6, wherein the upper part of the front strut 1 is connected to the rear The upper part of the strut 2 is pivotally connected by the first shaft 11, the lower part of the side link 4 is pivotally connected with the upper part of the rear strut 2 by the second shaft 12; the upper part of the side link 4 is pivotally connected by the third shaft 13 The shaft is connected on the push rod 6, the rear tie rod 5 is pivotally connected with the rear strut 2 through the fourth shaft 14, the upper part of the rear tie rod 5 is pivotally connected with the lower part of the push rod 6 through the fifth shaft 15, and the bottom link The front part of 3 is pivotally connected to the front strut 1 through the sixth shaft 16, and the rear part of the bottom link 3 is pivotally connected with the lower part of the rear tie rod 5 through the seventh shaft 17. The axes of the above-mentioned first shaft 11 , second shaft 12 , third shaft 13 , fourth shaft 14 , fifth shaft 15 , sixth shaft 16 and seventh shaft 17 are arranged parallel to each other. In some other embodiments, the axis line of the first shaft 11 and the axis line of the second shaft 12 may also be arranged to extend co-linearly, that is, the first axis 11 and the second shaft 12 are arranged coaxially.

According to the above, when the cart frame is in the unfolded state, the third shaft 13 is located above the fifth shaft 15 on the push rod 6; ; On the side bracket 100 of each side, the first four-bar linkage mechanism is formed between the front support rod 1, the rear support rod 2, the rear tie rod 5 and the bottom connecting rod 3; the side connecting rod 4, the push rod 6, the rear tie rod 5 and the rear A second four-bar linkage mechanism is formed between the struts 2 . When the cart frame is folded, the rods in the second four-bar linkage mechanism and the first four-bar linkage mechanism are relatively rotated and folded to realize the folding of each side bracket 100 .

Specifically, in this embodiment, the locking mechanism includes a locking member (not shown in the figure) arranged between the lower part of the push rod 6 and the upper part of the rear pull rod 5 for locking the two. When the locking member is locked, the first Both the first four-bar linkage mechanism and the second four-bar linkage mechanism are locked, so that the side bracket 100 is locked in the unfolded state. After each side bracket 100 is unlocked, when the push rod 6 is pressed, the side link 4 and the rear tie rod 5 can be turned backward relative to the rear support rod 2 and gradually folded to the rear side of the rear support rod 2. At the same time, The rotation of the rear tie rod 5 drives the bottom connecting rod 3 to rotate relative to the front support rod 1, thereby driving the front support rod 1 and the rear support rod 2 to gradually converge along the front and rear directions, as shown in FIG. 5 . Finally, the front strut 1 , the rear strut 2 , the side link 4 , the rear tie rod 5 and the push rod 6 are folded together along the front and rear directions to realize the folding of the side bracket 100 , as shown in FIG. 6 .

Referring to FIGS. 1 to 4 , the side bracket 100 on each side further includes a seat post assembly 7 and a handle bar assembly 8 . The seat post assembly 7 includes a seat post 71 extending in the front-rear direction and a slider 72 pivotally connected to the side link 4. The rear portion of the seat post 71 is pivotally connected to the rear tie rod 5 through the eighth shaft 18. The eight-axis 18 is located above the fourth axis 14 and below the fifth axis 15 on the rear pull rod 5, and the seat post 71 is slidably connected to the slider 72 along its own length. Here, the slider 72 adopts a The ninth shaft 19 is pivotally connected to the sliding sleeve on the side link 4, and the sliding sleeve is slidably sleeved on the seat post 71. The ninth shaft 19 is located above the second shaft 12 and on the third side of the side link 4. below the shaft 13.

The armrest rod assembly 8 is located above the seat post assembly 7, and the armrest rod assembly 8 includes a front armrest bar 81 and a rear armrest bar 82 that are relatively sliding and telescopic along the length direction. On the rod 4, the rear part of the rear armrest rod 82 is pivotally connected to the rear tie rod 5 by the eleventh shaft 111, wherein the tenth shaft 110 is located between the ninth shaft 19 and the third shaft 13 on the side link 4 , the eleventh shaft 111 is located between the fifth shaft 15 and the eighth shaft 18 on the rear tie rod 5 . An armrest bar 801 is also provided between the armrest bar assemblies 8 on both sides, and the rear ends of the armrest bar 801 on both sides are respectively detachably connected to the front ends of the front armrest bars 81 on both sides, so as to realize alignment with the seat post 71 Children's protection. During the folding process of the above-mentioned side bracket 100, the seat post 71 slides relative to the sliding sleeve 72 and gradually rotates and gathers with the rear tie rod 5 and the side link 4, and the front handle bar 81 and the rear handle bar 82 slide relatively and gradually move together Back tie rod 5 and side connecting rod 4 rotate and draw in.

Referring to Fig. 1 and Fig. 4, the cart frame also includes a cross brace assembly arranged between the side brackets 100 on both sides. In this embodiment, the cross brace assembly includes The rear cross bar 201, the front cross bar 101 connected between the lower parts of the front struts 1 on both sides, the middle cross bar 501 connected between the rear tie rods 5 on both sides, and the upper cross bar connected between the upper parts of the push rods 6 on both sides Crossbar 601 . Here, the front cross bar 101 is also used as a footboard, and the middle part of the upper cross bar 601 is also provided with an unlocking operation part 9 for unlocking the locking parts on both sides; a brake lever assembly is also provided between the rear wheel assemblies 20 on both sides 202, used for braking control of the rear wheel assemblies 20 on both sides.

Referring to the accompanying drawings, there are two groups of front wheel assemblies 10, and the two groups of front wheel assemblies 10 are arranged on the lower parts of the two front poles 1; the rear wheel assemblies 20 have two groups, and the two groups of rear wheel assemblies 20 are arranged on the two rear branches Lower part of rod 2. The distance between the front wheel assemblies 10 on both sides along the left-right direction is greater than the distance between the rear wheel assemblies 20 on both sides along the left-right direction.

When the stroller frame is folded, the front strut 1 and the rear strut 2 move closer together in the front-to-rear direction, the rear wheel assemblies 20 on both sides are gathered between the front wheel assemblies 10 in the left-right direction, and the front crossbar 101 is positioned at the rear crossbar. The front of the lever 201 and the brake lever assembly 202. This enables the front wheel assembly 10 and the rear wheel assembly 20 to be overlapped as much as possible, and the front strut 1 and the rear strut 2 to be as close as possible along the front-to-rear direction, thereby further reducing the folded size and size of the stroller frame. The volume avoids the failure of the front strut and the rear wheel assembly due to the interference of the brake lever assembly 202 and the rear cross bar 201 when the two front wheel assemblies are folded between the two rear wheel assemblies in the left and right directions when the traditional stroller is folded. The tight gathering of the struts.

In summary, the children’s stroller of the present invention has a small number of rods, and only needs to lock the push rods 6 and the rear pull rods 5 on both sides in the unfolded state, so that the first rods on each side bracket 100 The first four-bar linkage mechanism is locked with the second four-bar linkage mechanism, so that the cart frame is stably in the unfolded state, and the cart frame in the unfolded state has good stability, as shown in Figures 1 to 4 .

When it is necessary to fold the stroller, the operator only needs to operate the unlocking operation part 9 to unlock the locking parts on the side brackets 100 on both sides, and then press down the push rod 6 to make the rods on the stroller frame rotate relatively And gather together gradually, realize the folding of cart frame. The folded cart frame is shown in Figure 6, the rear wheel assemblies 20 on both sides are gathered between the front wheel assemblies 10 on both sides along the left and right directions, and the rods on the cart frame can be tightly closed together , so that the size of the folded stroller frame is very compact and flat. Simultaneously, on the folded stroller frame, the bottom of the push rod 6 and the upper portion of the rear pull rod 5 are pivotally connected to form a support point, and the support point and the rear wheel assembly 20 are jointly supported on the ground so that the push rod frame Standing on the ground, it provides convenience for users' daily storage and carrying.

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 A wheel assembly, and a locking mechanism for locking the cart frame in an unfolded state, the cart frame includes two side brackets respectively arranged on the left and right sides, and it is characterized in that the side brackets on each side The brackets all include: a front strut extending upwardly from front to rear, a rear strut extending upwardly from rear to forward, a bottom link extending along the front-rear direction, and respective side links, rear tie rods and a push rod, wherein the upper portion of the front strut is pivotally connected to the upper portion of the rear strut via a first shaft, and the lower portion of the side link is pivotally connected to the upper portion of the rear strut via a second shaft shaft connection, the axis line of the first shaft and the axis line of the second shaft extend parallel or collinear; the upper part of the side link is pivotally connected to the push rod through the third shaft, The rear tie rod is pivotally connected to the rear strut by a fourth axis, the upper portion of the rear tie rod is pivotally connected to the lower portion of the push rod by a fifth axis, and the front portion of the bottom link is connected by The sixth shaft is pivotally connected to the front support rod, the rear part of the bottom link is pivotally connected to the lower part of the rear tie rod through the seventh shaft, and the third shaft, the fourth shaft, the first The axis lines of the fifth axis, the sixth axis, the seventh axis and the first axis are parallel to each other, The front wheel assembly is arranged on the lower part of the front pole, the rear wheel assembly is arranged on the lower part of the rear pole, and the distance between the front wheel assemblies on both sides along the left and right direction is greater than that on both sides. The distance between the rear wheel assemblies along the left and right direction, when the cart frame is in the folded state, the front struts and rear struts on the side brackets on each side are folded in the front and rear direction, and the rear struts of the two groups are The wheel assembly is located between the two sets of front wheel assemblies in the left-right direction. 2. The children's stroller according to claim 1, characterized in that: the first four-bar linkage mechanism is formed between the front support rod, the rear support rod, the rear tie rod and the bottom connecting rod, and the side connecting rod, push rod The second four-bar linkage mechanism is formed between the rod, the rear pull rod and the rear support rod. When the cart frame is folded, the rear pull rod is turned backwards around the fourth axis relative to the rear support rod and folded in the Describe the rear side of the rear strut. 3. The children's stroller according to claim 2, wherein when the stroller frame is in the folded state, a support is formed at the pivot connection between the lower part of the push rod and the upper part of the rear pull rod point, the support point and the rear wheel assembly are jointly supported on the ground so that the stroller frame can stand on the ground. 4. The children's stroller according to claim 1, characterized in that: when the stroller frame is in an unfolded state, the third axis is located above the fifth axis on the push rod; The seventh axis and the fifth axis are respectively arranged on the front and rear sides of the rear support rod. 5. The stroller for children according to claim 1, characterized in that: the axis line of the first shaft and the axis line of the second shaft are arranged parallel to each other. 6. The children's stroller of claim 1, wherein said side brackets on each side further comprise a seat post assembly comprising a seat post extending in a fore-aft direction and pivotally connected to said seat post. The slider on the side link, the rear portion of the seat post is pivotally connected to the rear tie rod by the eighth axis, and the seat post is slidably connected to the slider along its own length. 7. The children's stroller according to claim 6, wherein the sliding member is a sliding sleeve pivotally connected to the side link through a ninth shaft, and the ninth shaft is on the side The connecting rod is located between the second shaft and the third shaft along the vertical direction; the eighth shaft is located between the fourth shaft and the fifth shaft on the rear pull rod. 8. The stroller according to claim 7, characterized in that: the side brackets on each side further include an armrest assembly, and the armrest assembly includes a front armrest bar and a rear armrest bar that slide and expand relative to each other along the length direction, so that The front armrest bar is pivotally connected to the side link by a tenth axis, and the rear portion of the rear armrest bar is pivotally connected to the rear tie rod by an eleventh axis, wherein the tenth axis is at The side link is located between the ninth shaft and the third shaft, and the eleventh shaft is located between the fifth shaft and the eighth shaft on the rear tie rod. 9. The children's stroller according to any one of claims 1 to 8, wherein the stroller frame further comprises a cross brace assembly arranged between the side supports on both sides, and the cross brace assembly It includes a rear cross bar connected between the lower parts of the rear struts on both sides, and/or a front cross bar connected between the lower parts of the front struts on both sides, and/or connected between the rear tie rods on both sides and/or the upper cross bar connected between the upper parts of the push rods on both sides. 10. The children's stroller according to claim 9, characterized in that: the rear cross bar is provided between the lower parts of the rear support rods on both sides, and the rear wheel assembly on both sides is also provided with In the brake lever assembly, the front cross bar is arranged between the lower parts of the front struts on both sides. When the cart frame is in a folded state, the front cross bar is located in front of the rear strut.