CN206734372U - Children trolley - Google Patents

Abstract

The utility model discloses a stroller for children, the vehicle frame of which comprises side brackets respectively arranged on both sides and a cross brace assembly connected between the side brackets on both sides, the cross brace assembly comprises a plurality of cross brace rods extending along the left and right directions , one end of the cross brace is pivotally connected to the left side bracket through the first shaft, the other end of the cross brace is pivotally connected to the right side bracket through the second shaft, and the cross brace is connected to the left side There are a plurality of first elastic parts between the side brackets of the vehicle, and a plurality of second elastic parts between the cross brace and the right side bracket. When the frame is folded, each side bracket is folded separately to realize the vehicle After the primary folding of the frame, the vehicle frame can be turned and folded towards the cross brace assembly automatically under the action of the first elastic member and the second elastic member to complete the secondary folding. This not only makes the structure of the folded vehicle frame more compact, but also greatly simplifies the operation steps when the vehicle frame is folded, bringing great convenience to the daily use of the user.

Description

stroller

technical field

The utility model relates to a stroller for children, in particular to a stroller for children which can be folded twice and is very convenient for folding operation.

Background technique

Children's strollers have been widely used because of their convenience and practicability. In the prior art, children's strollers have a variety of structures, but most of them still have the problem of being too large after being folded and not easy to carry and store.

In order to further reduce the volume of children's strollers, the applicant has developed a variety of children's strollers at present, all of which have a secondary folding function, that is, after the bars of the stroller frame are folded in the front and rear directions, and then folded along the Horizontal folding is carried out in the left and right directions, such as patents CN103507846 and CN104554410, so that the volume of the vehicle frame is further reduced. However, the current vehicle frame needs to go through multi-step operations when folding, which is relatively inconvenient to use.

Contents of the invention

The purpose of this utility model is to provide a child's stroller that can be folded twice and is very convenient for folding operation

In order to achieve the above purpose, the technical solution adopted by the utility model is: a children's stroller, including a frame with an unfolded state and a folded state, a wheel assembly arranged at the bottom of the frame, and used to lock the frame In the locking mechanism in the unfolded state, the vehicle frame includes two side brackets arranged on the left and right sides, and a cross brace assembly connected between the side brackets on both sides, and the side brackets on each side include opposite side brackets. A plurality of support rods connected by rotation, the cross brace assembly includes a plurality of cross brace rods extending in the left and right directions, one end of the cross brace rod is pivotally connected to the left side bracket through a first shaft, The other end of the cross brace is pivotally connected to the side bracket on the right side through a second shaft, and a plurality of devices for driving the left side are arranged between the cross brace and the side bracket on the left side. The side bracket of the side bracket is turned around the first axis toward the first elastic member that is folded laterally toward the cross brace, and a plurality of pieces for driving the right side are arranged between the cross brace and the side bracket on the right side. The side bracket is turned around the second axis toward the second elastic member that is folded laterally toward the cross brace. When the frame is folded, the plurality of bracket bars on the same side are relatively rotated and close together so that the side bracket After the brackets are folded so as to realize one fold of the vehicle frame, the axis lines of all the first shafts extend co-linearly or parallel and the axis lines of all the second shafts extend co-linearly or parallelly. Under the action of the first elastic member and the second elastic member, the side brackets are automatically flipped and folded towards the cross strut so as to realize the secondary folding of the vehicle frame.

Preferably, the first elastic member is a first torsion spring sleeved on the first shaft, and the second elastic member is a second torsion spring sleeved on the second shaft.

Preferably, after the vehicle frame is folded once, the side brackets on both sides are turned over and automatically folded to the same side of all the cross braces.

Further, when the vehicle frame is folded once, the axis lines of all the first shafts extend collinearly, the axis lines of all the second shafts extend collinearly, and the axis lines of all the second shafts extend collinearly, and the first axis The axis line of the first axis and the axis line of the second axis are parallel to each other.

Preferably, the plurality of support rods of the side brackets on each side at least include a front support rod, a rear support rod and a push rod that are relatively rotatably connected, and the plurality of cross support rods include the front support rods arranged on both sides. The first cross strut between the struts, and/or the second cross strut between the rear struts on both sides, and/or the third cross strut between the push rods on both sides cross strut.

Further, the side brackets on each side further include a tent rod extending upwards gradually from front to rear, a seat post extending in the front-rear direction, and a tie rod, the lower part of the tent rod is pivoted to the upper part of the front support rod shaft connection, the upper portion of the rear strut is pivotally connected to the canopy rod, the front portion of the seatpost is pivotally connected to the front strut and the rear portion thereof is pivotally connected to the rear strut Above, one end of the pull rod is pivotally connected to the upper part of the front support rod or the lower part of the tent rod, and the other end of the pull rod is pivotally connected to a slider, and the slider slides back and forth ground on the seat post; the lower part of the push rod is pivotally connected to the front strut or the canopy rod, and when the vehicle frame is in the unfolded state, the push rod has a The forward working position with gradual upward inclination and the reverse working position with gradual upward inclination from back to front.

Further, the side brackets on each side further include a handrail rod extending in the front-rear direction and the rear part is pivotally connected to the front support rod or the tent rod, and the front ends of the handrail rods on both sides are There is a fourth cross strut between them. When the push rod is in the forward working position, the push rod and the awning rod are close to each other and locked; when the push rod is in the reverse working position, the push rod Close to and lock with the handrail bar.

Furthermore, the upper part of the front support rod, the lower part of the awning rod, the rear part of the handle rod and one end of the pull rod are rotatably connected to each other through the same rotating joint.

As a specific setting method, the first cross brace is provided between the lower parts of the front struts on both sides, and the second cross brace is disposed between the rear struts on both sides. Rod, the third cross brace is arranged between the upper parts of the push rods on both sides; the fifth cross brace is also arranged between the rear parts of the seat posts on both sides, and the canopy on both sides A sixth cross brace is also provided between the upper parts of the bars.

Further, the wheel assembly includes two sets of front wheels separately arranged at the lower parts of the front struts on both sides, and two sets of rear wheels respectively set at the lower parts of the rear struts on both sides. When the vehicle frame completes the two sets of After the first folding, the front wheels on both sides move closer together along the left and right directions, and the rear wheels on both sides move closer along the left and right directions, and the front wheels are located above the rear wheels.

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 is provided with a cross brace assembly between the side brackets on both sides, and the first elastic member and the second elastic member, so that the bracket rods of the side brackets on each side of the frame are relatively rotated and folded to realize a fold of the vehicle frame, and the vehicle frame can automatically move toward The cross brace assembly is turned over and folded to automatically realize the secondary folding. This not only makes the structure of the folded vehicle frame more compact, but also greatly simplifies the operation steps when the vehicle frame is folded, bringing great convenience to the daily use of the user.

Description of drawings

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

Accompanying drawing 2 is the side view of the expanded state of the children's stroller of this embodiment, wherein the push rod is in the forward working position;

Accompanying drawing 3 is the side view of the expanded state of the children's stroller of this embodiment, wherein the push rod is in the reverse working position;

Accompanying drawing 4 is the side view of the children's stroller of this embodiment after being folded once;

Accompanying drawing 5 is the front view of the children's stroller of this embodiment after being folded once;

Accompanying drawing 6 is the enlarged schematic diagram of part A in accompanying drawing 5;

Accompanying drawing 7 is the enlarged schematic diagram of part B in accompanying drawing 5;

Accompanying drawing 8 is the three-dimensional view of the children's stroller of this embodiment after being folded twice;

Among them: 100, side bracket;

1. Front support rod; 2. Rear support rod; 3. Push rod; 4. Canopy rod; 5. Seat post; 6. Pull rod; 7. Sliding part (sliding sleeve); 10. Unlock the strap; 20. Front wheel; 30. Rear wheel;

11. The first cross brace; 12. The second cross brace; 13. The third cross brace; 14. The fourth cross brace; 15. The fifth cross brace; 16. The sixth cross brace;

a, b, c, d, e, f, first axis; a', b', c', d', e', f', second axis;

21. The first elastic member (first torsion spring); 22. The second elastic member (second torsion spring).

detailed description

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 4, it includes a vehicle frame with an unfolded state and a folded state, a wheel assembly located at the bottom of the vehicle frame, and a locking mechanism for locking the vehicle frame in the expanded state. The vehicle frame includes two side brackets 100 respectively arranged on the left and right sides, and a cross brace assembly connected between the side brackets 100 on both sides.

The side bracket 100 on each side includes a plurality of bracket rods connected in relative rotation. When the vehicle frame is folded, the plurality of bracket rods are relatively rotated and folded together so that the side bracket can be folded. 1 to 3, specifically, the side brackets 100 on each side include a front strut 1, a rear strut 2, a push rod 3, a canopy rod 4, a seat post 5 and a tie rod 6, wherein the front strut 1. The canopy rods 4 are gradually tilted up from front to rear, and the upper part of the front support rod 1 is pivotally connected to the lower part of the tent rod 4; the rear support rod 2 extends in the up and down direction, and the upper part of the rear support rod 2 is pivotally connected On the canopy rod 4; the seat post 5 extends in the front and rear directions, the front part of the seat post 5 is pivotally connected to the front support rod 1 and the rear part is pivotally connected to the rear support rod 2; the tie rod 6 extends obliquely in the up and down direction , the upper end of the pull rod 6 is pivotally connected to the upper part of the front strut 1 or the lower part of the canopy rod 4, and the lower part of the pull rod 6 is pivotally connected to a sliding piece 7, and the sliding piece 7 is arranged on the seatpost 5 in a forward and backward sliding manner. What the sliding member 7 adopts is a sliding sleeve 7 slidably sleeved on the seat post 5 . The side bracket 100 on each side also includes an armrest bar 8 extending in the front-rear direction, the rear portion of the armrest bar 8 is pivotally connected to the upper part of the front support bar 1 or the lower part of the awning bar 4

Referring to Figures 1 to 3, the lower part of the push rod 3 is pivotally connected to the upper part of the front strut 1 or the lower part of the tent rod 4, and when the vehicle frame is in the unfolded state, the push rod 3 has a tendency to gradually incline from front to rear. Extended forward working state, and reverse working state gradually extending from back to front. Locking parts are respectively arranged between the tent rod 4 and the push rod 3, and between the armrest rod 8 and the push rod 3. When the push rod 3 is in the forward working position, as shown in Fig. 2, the push rod 3 and the tent rod 4 are aligned. Close together and lock each other, so that the user can push the cart from the rear of the cart; when the push rod 3 is in the reverse working position, see Figure 3, the push rod 3 and the handle bar 8 are close together and locked with each other, so that the user The stroller can be pushed in reverse from the front of the stroller towards the child in the stroller.

Referring to Fig. 1 to Fig. 3, in this embodiment, the upper part of the front strut 1, the lower part of the canopy rod 4, the lower part of the push rod 3, the upper end of the pull rod 6 and the rear end of the armrest rod 8 pass through the rotating joint 9 are connected together rotationally. When the vehicle frame is in the unfolded state, on the side brackets 100 on each side, the front strut 1 and the canopy pole 4 extend along the same length direction, and a stable The triangular structure of the front strut 1, the seat post 5 and the tie rod 6 also forms a stable triangular structure, so that the side bracket 100 on each side is in a stable unfolded state. Depending on the pushing needs, the user can close and lock the push rod 3 on the tent rod 4 to realize forward pushing or draw close to and lock on the handrail rod 8 to realize reverse pushing.

Referring to Fig. 1 and Fig. 5, the cross brace assembly connected between the side brackets 100 on both sides includes a plurality of cross braces extending in the left and right directions. There are at least two cross braces, and the left end of each cross brace The part is pivotally connected to the bracket bar of the left side bracket 100 through the first shaft, and its right end is pivotally connected to the bracket bar of the right side bracket 100 through the second shaft; Between 100, there is a first elastic member 21 for driving the left side bracket 100 to turn and fold toward the cross brace around the first axis, and between the cross brace and the right side bracket, there is a first elastic member 21 for driving the right side bracket 100 turns the folded second elastic member 22 around the second axis toward the cross brace.

In this embodiment, there are six cross braces, which are respectively the first cross brace 11 arranged between the front braces 1 on both sides, and the second cross brace arranged between the rear braces 2 on both sides. 12. The third cross strut 13 between the push rods 3 on both sides, the fourth cross strut 14 between the handrail rods 8 on both sides, the fifth cross strut 14 between the tent rods 4 on both sides A cross brace 15, and a sixth cross brace 16 arranged between the seat posts 5 on both sides. Wherein, referring to Fig. 1 and Fig. 5, the two ends of the first cross brace 11 are pivotally connected between the lower parts of the front struts 1 on both sides through the first shaft a and the second shaft a' respectively; The two ends of the strut 12 are pivotally connected to the rear struts 2 on both sides through the first axis b and the second axis b' respectively; the two ends of the third cross strut 13 are respectively passed through the first axis c and the second axis c 'The pivot is connected between the tops of the push rods 3 on both sides; the two ends of the fourth cross brace 14 are pivotally connected between the front ends of the handrail rods 8 on both sides through the first axis d and the second axis d' respectively ; Both ends of the fifth cross brace 15 are pivotally connected between the tops of the tent rods 4 on both sides through the first axis e and the second axis e' respectively; the two ends of the sixth cross brace 16 are respectively passed through the first axis f. The second shaft f' is pivotally connected between the rear parts of the seat posts 5 on both sides.

Referring to Figure 6 and Figure 7, the first elastic member 21 is a first torsion spring sleeved on the first axis a/b/c/d/e/f, and the second elastic member 22 is sleeved on the second Second torsion spring on axis a'/b'/c'/d'/e'/f'. When setting specifically, the first torsion spring 21 can be set on all the first shafts, and the first torsion spring 21 can also be set on one or more of the first shafts; similarly, it can be used for all the second shafts Second torsion springs 22 are arranged on each of them, and second torsion springs 22 can also be arranged on one or several second shafts.

When the stroller is unfolded and used, as shown in Figures 1 to 3, the side brackets 100 on both sides are deployed respectively, and all the cross braces of the cross brace assembly are supported between the side brackets 100 on both sides. , the axis lines of multiple first axes a/b/c/d/e/f, and the axis lines of multiple second axes a'/b'/c'/d'/e'/f' are different , respectively lock the plurality of bracket rods of the side brackets 100 on both sides, so that the vehicle frame can be stably in the unfolded state. In this embodiment, the locking mechanism on the frame adopts a locking piece (not shown in the figure) arranged between the sliding sleeve 7 and the seat post 5 for locking the two. An unlocking strap 10 for unlocking both is provided, and the locking parts on both sides can be unlocked synchronously by lifting the unlocking strap 10 .

When the frame needs to be folded up, the operator lifts the unlocking strap 10 to simultaneously unlock the locking parts on both sides. On the side brackets 100 on each side, the sliding sleeve 7 slides along the seat post under the pulling action of the unlocking strap 10 . 5 slide forward, and at the same time, the push rod 3 and the canopy rod 4 are turned backward due to their own gravity and gradually turn towards the rear side of the rear support rod 2, so that the front support rod 1, rear support rod 2, push rod 3, tent rod 4, The seat post 5 , the tie rod 6 and the armrest bar 8 are gradually folded together along the front and rear directions, so that the side brackets 100 on both sides are folded respectively to realize one-time folding of the vehicle frame. In this state, the axis lines of all the first axes a, b, c, d, e, f are colinear or parallel, and at the same time, multiple second axes a', b', c', d', e ', f' axis lines extend collinearly or parallel. As shown in Figure 5, in this embodiment, after the frame is folded once above, the axis lines of the first axes a, b, c, d, e, f basically extend collinearly, a, b, c, The straight line where the axis lines of d, e, and f form the center line M-M' of rotation of the left side support 100; the axes of the second axes a', b', c', d', e', f' The lines extend substantially collinearly, and the straight line where the axes of a', b', c', d', e', f' is located forms the rotation centerline NN' of the left side bracket 100, and M-M' Parallel to NN'.

At this time, under the elastic force of all the first torsion springs 21, the left side bracket 100 automatically rotates and gathers around M-M' towards all the cross struts; under the elastic force of all the second torsion springs 22 Next, the right side bracket 100 automatically rotates and gathers around N-N' towards all the cross braces. Specifically, here, the side brackets 100 on both sides are reversed towards each other and gathered to the same side of all the cross braces, as shown in FIG. 8 .

Referring to the accompanying drawings, on the stroller, the wheel assembly includes two sets of front wheels 20 located at the bottom of the front struts 1 on both sides, and two sets of rear wheels 30 located at the bottom of the rear struts 2 on both sides. After the vehicle frame is folded once, as shown in Figure 4, the front wheels 20 are located above the rear wheels 30, and after the vehicle frame is folded twice, as shown in Figure 8, the front wheels 20 on both sides move closer along the left and right directions, The rear wheels 30 on both sides approach along the left and right directions, and the two front wheels 20 are located above the two rear wheels 30 .

In this embodiment, the front wheel 20 is set as two rear wheel bodies connected by the front wheel frame, and the front strut 1 is connected with the middle part of the front wheel frame; the rear wheel 30 is set as two rear wheel bodies connected by the rear wheel frame. Wheel body, rear strut 2 is connected with the middle part of rear wheel frame. In this way, after the vehicle frame is folded once, the support rods of the side brackets 100 on the same side can be partially accommodated between the two front wheel bodies and the two rear wheel bodies after being folded together. After being turned over and folded, the wheel assembly can be tightly folded between the rods of the vehicle frame, thereby presenting a very flat and compact state, as shown in FIG. 8 .

To sum up, the frame of the children's stroller in this embodiment has good stability in the unfolded state, and the push rod 3 can work forward and reverse. When the vehicle frame is folded, the automatic unlocking of the locking mechanism on the vehicle frame can be realized only by pulling the unlocking handle 10, so that the vehicle frame can automatically realize primary folding and secondary folding in sequence, and the folding operation is very convenient. It brings great convenience to users' daily use.

Of course, when the child stroller adopts other frame structures, by setting the cross brace assembly between the side brackets on both sides, and by arranging the first elastic member and the second elastic member, the side brackets on each side of the vehicle frame After finishing the first folding of the vehicle frame, the vehicle frame can be turned and folded towards the cross brace assembly automatically under the action of the first elastic member and the second elastic member to complete the second folding.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present utility model, and its purpose is to enable those familiar with this technology to understand the content of the present utility model and implement it accordingly, and not to limit the protection scope of the present 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 vehicle frame with an unfolded state and a folded state, a wheel assembly arranged at the bottom of the vehicle frame, a locking mechanism for locking the vehicle frame in the expanded state, the vehicle frame It includes two side brackets arranged on the left and right sides, and a cross brace assembly connected between the side brackets on both sides. The cross brace assembly includes a plurality of cross braces extending in the left and right directions, one end of the cross brace is pivotally connected to the left side bracket through a first shaft, and the other end of the cross brace is part is pivotally connected to the side bracket on the right side through a second shaft, and there are multiple sets between the cross brace and the side bracket on the left side for driving the side bracket on the left side to rotate around the side bracket The first shaft is turned toward the first elastic member that is folded laterally toward the cross brace, and a plurality of pieces are arranged between the cross brace and the right side bracket for driving the right side side bracket to rotate around the the second elastic member that is folded and folded laterally toward the cross brace by the second axis, When the vehicle frame is folded, the plurality of support rods on the same side are relatively rotated and close together so that the side supports are folded so that after the vehicle frame is folded once, the axis lines of all the first shafts are collinear extend or be parallel and all the axis lines of the second shafts are colinearly extended or parallel, and the side brackets on both sides are automatically moved toward the transverse direction under the action of the first and second elastic members respectively. The struts are flipped and folded so as to realize the secondary folding of the vehicle frame. 2. The stroller according to claim 1, wherein the first elastic member is a first torsion spring sleeved on the first shaft, and the second elastic member is sleeved on the first shaft. Describe the second torsion spring on the second shaft. 3. The children's stroller according to claim 1, characterized in that: when the frame is folded once, the side brackets on both sides are turned over and automatically folded to all the cross struts on the same side. 4. The children's stroller according to claim 3, characterized in that: after the said vehicle frame is folded once, the axis lines of all the first shafts extend collinearly, and all the axis lines of the first shafts The axis lines of the two shafts extend co-linearly, and the axis lines of the first axis and the second axis are parallel to each other. 5. The stroller according to any one of claims 1 to 4, characterized in that: the plurality of support rods of the side brackets on each side at least include a front support rod, a rear support rod and a push rod connected in relative rotation , a plurality of said cross struts include a first cross strut arranged between said front struts on both sides, and/or a second cross strut disposed between said rear struts on both sides , and/or a third cross brace arranged between the push rods on both sides. 6. The stroller according to claim 5, wherein the side brackets on each side further include a canopy rod extending upwardly from front to rear, a seat post extending in the front-rear direction, and a pull rod, the The lower portion of the canopy rod is pivotally connected to the upper portion of the front strut, the upper portion of the rear strut is pivotally connected to the canopy rod, and the front portion of the seat post is pivotally connected to the front strut and its rear part is pivotally connected to the rear support rod, one end of the pull rod is pivotally connected to the upper part of the front support rod or the lower part of the tent rod, and the other end of the pull rod is The pivot is connected with a slider, and the slider is arranged on the seat post in a forward and backward sliding manner; the lower part of the push rod is pivotally connected to the front support rod or the tent rod, when the When the rack is in the unfolded state, the push rod has a forward working position gradually extending upward from front to rear and a reverse working position gradually upward extending from rear to front. 7. The stroller according to claim 6, wherein the side brackets on each side further comprise armrests extending in the front-rear direction and pivotally connected to the front pole or the tent pole at the rear Rod, a fourth cross brace is provided between the front ends of the handrail rods on both sides. When the push rod is in the forward working position, the push rod and the tent rod are locked together; when the When the push rod is in the reverse working position, the push rod and the handrail rod are moved closer to each other and locked. 8. The stroller according to claim 7, characterized in that: the upper part of the front support rod, the lower part of the tent rod, the rear part of the armrest rod and one end of the pull rod pass through the same rotating joint Rotate and connect with each other. 9. The children's stroller according to claim 6, characterized in that: the first transverse strut is arranged between the lower parts of the front struts on both sides, and the rear struts on both sides The second cross brace is provided, the third cross brace is arranged between the upper parts of the push rods on both sides; the fifth cross brace is also arranged between the rear parts of the seat posts on both sides. As for the cross struts, a sixth cross strut is also arranged between the upper parts of the cantilever rods on both sides. 10. The children's stroller according to claim 5, wherein the wheel assembly comprises two sets of front wheels separately arranged at the lower parts of the front struts on both sides, and two sets of front wheels respectively arranged at the lower parts of the rear struts on both sides. group of rear wheels, when the vehicle frame completes the secondary folding, the front wheels on both sides approach each other along the left and right directions, and the rear wheels on both sides move closer along the left and right directions, and the front wheels are located at the above the rear wheels.