CN204713164U - Children trolley - Google Patents

Abstract

The utility model discloses a kind of children trolley, wherein vehicle frame comprises the side stand laying respectively at the left and right sides, the side stand of every side includes front frame, push rod, after poppet, seat bar and pipe link, front component is located at the bottom of front frame, seat bar extends along the longitudinal direction, the front portion of seat bar is connected to its rear portion on push rod and is connected on after poppet, the top of after poppet is connected on push rod, and seat bar, be connected to each other between push rod and after poppet formation one slider-crank mechanism, the top of front frame is connected with the bottom phase pivot of push rod, the provided at one of pipe link is connected on front frame, the other end pivotal joint of pipe link is present on bar, when vehicle frame is in deployed condition, front frame, push rod, triangular structure is formed between seat bar and pipe link, seat bar, another triangular structure is formed between push rod and after poppet, when vehicle frame is in folded state, push rod, after poppet, seat bar and pipe link are drawn close mutually, and pipe link drives front frame and front component to turn over.

Description

stroller

technical field

The utility model relates to a stroller for children.

Background technique

At present, there are mainly two groups of children's strollers on the market, one is an ordinary stroller, and the other is a lightweight umbrella handle stroller. Compared with ordinary carts, the umbrella cart is very convenient, and it is very small after folding, which is suitable for going out, especially when taking other means of transportation.

In the prior art, the frame structure of the foldable umbrella handle car is various, and the connection relationship of each rod is also different, correspondingly the folding principle is also different, and the convenience of the folding operation is also different. The existing umbrella handle car needs multi-step operations when folding, and it cannot be folded by carrying it. The operation of closing the car is not convenient enough. The characteristics of the umbrella handle itself are prone to retraction after the frame is loaded, which affects the safety and comfort of use.

Contents of the invention

The purpose of the utility model is to overcome the disadvantages of the prior art and provide a child stroller with good rigidity and convenient folding.

For achieving the above object, the technical scheme that the utility model adopts is:

A stroller for children, comprising a vehicle frame in an expanded state and a folded state, a front wheel assembly and a rear wheel assembly arranged at the bottom of the vehicle frame, and a locking mechanism for locking the vehicle frame in the expanded state, the The vehicle frame includes side brackets respectively located on the left and right sides, and a strut assembly arranged between the side brackets on both sides, and the side brackets on each side include a front bracket, a push rod, a rear bracket, a seat post and connecting rod, the front wheel assembly is arranged at the lower part of the front bracket, the rear wheel assembly is arranged at the lower part of the rear bracket, the seat post extends along the front-rear direction, and the front part of the seat post is connected to the The rear part of the push rod is connected to the rear bracket, the upper part of the rear bracket is connected to the push rod, and the seat post, push rod and rear bracket are connected to each other to form a slider crank mechanism , the upper part of the front bracket is pivotally connected to the lower part of the push rod, one end of the connecting rod is pivotally connected to the front bracket, and the other end of the connecting rod is pivotally connected to the seat post Above, when the vehicle frame is in the unfolded state, a triangular structure is formed between the front bracket, push rod, seat post and connecting rod, and another triangular structure is formed between the seat post, push rod and rear bracket; when When the vehicle frame is in the folded state, the push rod, the rear bracket, the seat post and the connecting rod move closer to each other, and the connecting rod drives the front bracket and the front wheel assembly to turn backward.

Preferably, the upper pivot of the rear bracket is connected with a slider, and the slider is provided on the push rod to slide along the length extension direction of the push rod, and the front part of the seat post is pivotally connected to The rear of the seatpost is pivotally connected to the rear bracket on the pushrod.

Further, the strut assembly can be arranged between the side brackets on both sides so as to be expanded or folded in the transverse direction, and the strut assembly at least includes a bottom cross assembly, and the bottom cross assembly includes intersecting and Two bottom braces pivotally connected at the intersection, the front end of the bottom brace is rotatably connected to the push rod on one side, and the rear end of the bottom brace is rotatably connected to the push rod on the other side. on the rear bracket.

Furthermore, the front end of the seatpost is pivotally connected to the push rod through a rotating shaft, and the front end of the bottom brace is rotatably connected to the push rod through a first connecting piece, and the rotating shaft is pivotally connected to the push rod through a first connecting piece. The push rod is located above the first connecting piece, and the sliding piece is arranged above the rotating shaft.

Furthermore, the strut assembly also includes a rear strut assembly arranged between the rear brackets on both sides, which can be folded and unfolded laterally.

Further, when the vehicle frame is in the unfolded state, the connecting rod is located between the front bracket and the rear bracket along the front-rear direction.

Further, the locking mechanism includes a locking piece slidably provided on the slider, and a matching portion provided on the push rod for cooperating with the locking piece. When the locking mechanism is in the locked state , the locking part cooperates with the matching part so that the sliding part and the push rod are relatively locked; when the locking mechanism is in the unlocked state, the locking part is separated from the matching part, and the frame An unlocking part for driving the locking part to slide to disengage from the matching part is also provided on the top.

Furthermore, the unlocking part is a pulling cable arranged between the sliding parts on both sides, and the two ends of the pulling cable are respectively connected to the locking parts on both sides.

Further, the sliding member is a sliding sleeve slidably sleeved on the push rod.

Further, when the vehicle frame is in the folded state, the front wheel assemblies on both sides are folded back and close to the rear side of the connecting rod flush with the rear wheel assemblies on both sides.

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 and a simple structure, and the unfolded frame has good rigidity, and it is easy to use when carrying a load. There will be no shrinkage phenomenon; after the frame is folded, the front bracket drives the front wheel assembly to turn backwards and is closely connected with the rods on the frame, so that the overall volume of the folded frame is small and can stand on its own Ground, easy to store and carry, bringing convenience to users.

Description of drawings

Accompanying drawing 1 is the three-dimensional view that the children's stroller of the present invention is in the unfolded state;

Accompanying drawing 2 is the structure exploded schematic view of the children's stroller of the present utility model;

Accompanying drawing 3 is the schematic diagram of the folding principle of the children's stroller of the present utility model;

Accompanying drawing 4 is the three-dimensional schematic diagram of the children's stroller of the present invention in a folded state;

Among them: 100, side bracket; 1, front bracket; 2, push rod; 3, rear bracket; 4, seat post; 5, connecting rod; 6, sliding part (sliding sleeve); 7, unlocking part (traction cable); 8. Bottom cross brace assembly; 81. Bottom brace; 82. First connector; 83. Second connector; 9. Rear brace assembly; 10. Rotating shaft; 20. Front wheel assembly; 30. Rear wheel assembly.

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 4, it includes a vehicle frame with an unfolded state and a folded state, and a front wheel assembly 20 and a rear wheel assembly 30 arranged at the bottom of the frame for locking the vehicle frame in the unfolded state. the locking mechanism. The vehicle frame includes side brackets 100 respectively located on the left and right sides, and a strut assembly arranged between the side brackets 100 on both sides.

Referring to Fig. 1 and Fig. 2, the side brackets on each side include a front bracket 1, a push rod 2, a rear bracket 3, a seatpost 4 and a connecting rod 5, the front wheel assembly 20 is arranged at the lower part of the front bracket 1, and the rear wheel The assembly 30 is located at the lower part of the rear bracket 3 . The seat post 4 extends along the front-rear direction, the front part of the seat post 4 is connected to the push rod 2 and the rear part thereof is connected to the rear bracket 3, and the upper part of the rear support 3 is connected to the push rod 2, and the seat post 4, the push rod 2 and the rear bracket 3 are connected to each other to form a slider crank mechanism, that is, between the front part of the seat post 4 and the push rod 2, between the rear part of the seat post 4 and the rear bracket 3, and between the rear bracket 3 One of the three joints between the upper part and the push rod 2 is relatively slidable and rotatable, and the other two joints are rotationally connected, so that the seat post 4, the push rod 2 and the rear The bracket 3 constitutes a slider crank mechanism.

In this embodiment, the upper part of the rear support 3 is pivotally connected with a slider 6, which is slidably arranged on the push rod 2 along the length extension direction of the push rod 2, and the front part of the seat post 4 is pivotally connected to On the push rod 2, the rear portion of the seatpost 4 is pivotally connected to the rear bracket 3. Here, the sliding member 6 is a sliding sleeve 6 slidably sleeved on the push rod 2 .

Of course, in other embodiments, the slider can also be pivotally connected to the front part of the seatpost 4, and the slider can slide up and down along the push rod 2, and at the same time, the upper part of the rear bracket 3 and the push rod 2, the seat The rear part of the bar 4 is pivotally connected to the rear bracket 3; or the slider is pivotally connected to the rear part of the seat post 4, and the slider slides up and down along the rear bracket 3, and simultaneously the upper part of the rear bracket 3 is connected to the rear bracket 3. Between the push rods 2 and between the front part of the seat post 4 and the push rod 2, a pivot connection is adopted, so that the crank slider mechanism can be formed between the push rod 2, the rear bracket 3 and the seat post 4, thereby realizing the three Expand and collapse between bars.

Referring to the drawings, the upper part of the front bracket 1 is pivotally connected to the lower part of the push rod 2, one end of the connecting rod 5 is pivotally connected to the front bracket 1, and the other end of the connecting rod 5 is pivotally connected to the seat post 4 In this way, a four-bar linkage mechanism is formed between the front bracket 1, the push rod 2, the seat post 4 and the connecting rod 5. Here, the rear end of the connecting rod 5 is pivotally connected to the middle position of the seat post 4 , and when the vehicle frame is unfolded, the connecting rod 5 is located between the front bracket 1 and the rear bracket 3 along the front-rear direction.

Referring to the drawings, the strut assembly can be expanded or folded laterally and arranged between the side brackets 100 on both sides. The bottom brace 81 pivotally connected at the intersection, the front end of the bottom brace 81 is rotatably connected to the push rod 2 on one side through the first connecting piece 82, and the rear end of the bottom brace 81 is connected through the second connecting piece 83 is rotatably connected on the rear support 3 on the other side. Here, the front end of the seat post 4 is pivotally connected to the push rod 2 via a rotating shaft 10 , and the rotating shaft 10 is located above the first connecting member 82 on the push rod 2 . The slider 6 is located above the rotating shaft 10 on the push rod 2 . The strut assembly also includes a rear strut assembly 9 that is arranged between the rear supports 3 on both sides and can be folded and unfolded laterally. The rear strut assembly 9 can be the rear support assembly in this embodiment, or other possible The structure for realizing horizontally unfolded support and horizontally folded is not the focus of the invention of this utility model, and will not be repeated here.

The locking mechanism for locking the vehicle frame in the unfolded state includes a locking piece (not shown in the figure) slidably provided on the sliding piece 6, and a matching part provided on the push rod 2 for cooperating with the above-mentioned locking piece. (not shown in the figure), when the locking mechanism is locked, the locking part cooperates with the matching part so that the sliding part 6 and the push rod 2 are relatively locked; when the locking mechanism is unlocked, the locking part is separated from the above-mentioned matching part so that the sliding part 6 can Slide up and down relative to push rod 2. Specifically, the aforementioned locking member and matching portion may adopt a matching form such as a locking pin and a locking hole. The vehicle frame is also provided with an unlocking part 7 for driving the locking part to slide relative to the sliding part 6 to break away from the matching part. Here, the unlocking part 7 is a traction cable arranged between the sliding parts 6 on both sides. The two ends are respectively connected with the locking pieces on both sides, and when the traction rope is pulled, synchronous unlocking can be realized between the sliding piece 6 and the push rod 2 on both sides.

Referring to Figure 1, Figure 2, and Figure 3, when the frame is in the unfolded state and the locking mechanism is locked, the push rod 2 and the slider 6 are relatively locked, and a triangle is formed between the push rod 2, the seat post 4 and the rear bracket 3 Structure; the front bracket 1 and the push rod 2 extend along the same straight line, so that the front bracket 1, the push rod 2, the seat post 4 and the connecting rod 5 form another triangular structure, the bottom cross brace assembly 8 and the rear brace assembly 9 The front wheel assembly 20 and the rear wheel assembly 30 are jointly supported on the ground, and the vehicle frame is in a stable unfolded state. In this unfolded state, the vehicle frame has good rigidity, and the vehicle frame will not shrink inward after being loaded.

When the vehicle frame needs to be folded, as shown in Figure 3, first unlock the rear support assembly of the rear strut assembly 9 along the direction D, so that the side brackets 100 on both sides can be relatively close together in the lateral direction; then lift up and unlock Part 7 unlocks the locking mechanism, drives the sliding part 6 to slide up relative to the push rod 2, and the upper end of the rear bracket 3 then slides up relative to the push rod 2 and drives the rear end of the seat post 4 to move upward, so that the seat post 4 and the rear bracket 3 are opposite to each other. The push rod 2 rotates and gradually moves closer; the rear end of the connecting rod 5 moves up with the seat post 4 and drives the front bracket 1 and the front wheel assembly 20 to turn backward relative to the push rod 2, so that the front bracket 1, push rod 2, connecting rod 5 and The seatposts 4 gradually move closer together; at the same time, the rear end of the bottom brace 81 moves up following the bracket 3 so that the bottom braces 81 on both sides rotate with each other and gradually move closer in the left and right direction, and the rear support assembly 9 also Then it is folded in the transverse direction, which makes the side brackets 100 on both sides gradually folded in the transverse direction. The folded stroller is shown in FIG. 4 . At this time, the front wheel assemblies 20 on both sides and the rear wheel assemblies 30 on both sides are close together and are located flush on the rear side of the connecting rod 5 . The folded stroller has a small overall volume and is easy to store.

When the push cart needs to be deployed for use, the push rod 2 is pulled upward so that the slider 6 slides down along the push rod 2, so that the crank slide formed between the push rod 2, the seat post 4, the rear bracket 3 and the slider 6 The block mechanism works so that the push rod 2, the seat post 4 and the rear bracket 3 gradually unfold; The front wheel assembly 20 flips forward relative to the push rod 2; at the same time, the bottom strut assembly 8 and the rear strut assembly 9 are also gradually expanded laterally, and finally, when the vehicle frame is fully unfolded, the rear strut assembly 9 is locked and the slider 6 and the push rod 2 are mutually locked, and the cart frame returns to the unfolded state.

To sum up, the children's stroller of the present utility model has a small number of rods and a simple structure, and the unfolded frame has good rigidity, and does not shrink inward when loaded; only the rear strut assembly needs to be folded when folding. 9 After unlocking, lift up the unlocking part 7 to unlock the sliding part 6, so that the rods on the frame are relatively rotated and gradually gathered together. When the frame is folded, the front bracket 1 and the front wheel assembly 20 are facing backward. Flip over to be close to each rod of the vehicle frame, the overall volume of the folded vehicle frame is small, easy to store and carry, and brings convenience to users.

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 children trolley, comprise the vehicle frame with deployed condition and folded state, the front component being located at described bottom of frame and wheel assembly, for described vehicle frame being locked lockout mechanism in the deployed state, described vehicle frame comprise lay respectively at the left and right sides side stand, be located at strut assembly described in both sides between side stand, it is characterized in that:

The described side stand of every side includes front frame, push rod, after poppet, seat bar and pipe link, described front component is located at the bottom of described front frame, described wheel assembly is located at the bottom of described after poppet, described seat bar extends along the longitudinal direction, the front portion of described seat bar is connected on described push rod that its rear portion is connected on described after poppet, the top of described after poppet is connected on described push rod, and described seat bar, be connected to each other between push rod and after poppet formation one slider-crank mechanism, the top of described front frame is connected with the bottom phase pivot of described push rod, the provided at one of described pipe link is connected on described front frame, the other end of described pipe link is pivotally connected on described seat bar, when described vehicle frame is in deployed condition, described front frame, push rod, triangular structure is formed between seat bar and pipe link, described seat bar, another triangular structure is formed between push rod and after poppet, when described vehicle frame is in folded state, described push rod, after poppet, seat bar and pipe link are drawn close mutually, and described pipe link drives described front frame and described front component to turn over.

2. children trolley according to claim 1, it is characterized in that: the upper pivot of described after poppet is connected with a sliding part, described sliding part is located on described push rod along the length bearing of trend of described push rod slidably, the front portion of described seat bar is pivotally connected on described push rod, and the back pivot of described seat bar is connected on described after poppet.

3. children trolley according to claim 2, it is characterized in that: described strut assembly transversely can launch or be located at drawing between the described side stand of both sides, described strut assembly at least comprises end cross assembly, cross assembly of the described end comprise intersect and infall phase pivot connect two foundation struts, the front end of described bottom supporting rod is connected on the described push rod of side rotationally, is connected on the described after poppet of opposite side the rear end thereof of described bottom supporting rod.

4. children trolley according to claim 3, it is characterized in that: the front end of described seat bar is pivotally connected on described push rod by rotating shaft, the front end of described bottom supporting rod is connected on described push rod by the first attaching parts rotationally, described rotating shaft is positioned at above described first attaching parts on described push rod, and described sliding part is located at the top of described rotating shaft.

5. children trolley according to claim 3, is characterized in that: described strut assembly also comprises being located at described in both sides and can laterally draw between after poppet and the rear pole assembly launched.

6. children trolley according to claim 2, is characterized in that: when described vehicle frame is in deployed condition, and described pipe link is along the longitudinal direction between described front frame and described after poppet.

7. children trolley according to claim 2, it is characterized in that: described lockout mechanism comprising the locking piece be located at slidably on described sliding part, being located at the auxiliary section for matching with described locking piece on described push rod, when described lockout mechanism is in the lock state, described locking piece matches with described auxiliary section and makes that described sliding part is relative with described push rod to be locked; When described lockout mechanism is in released state, described locking piece departs from described auxiliary section, described vehicle frame is also provided with and slides with the unlock piece departing from described auxiliary section for ordering about described locking piece.

8. children trolley according to claim 7, is characterized in that: described unlock piece is for being located at the trailing cable described in both sides between sliding part, and the two ends of described trailing cable are connected with the described locking piece of both sides respectively.

9. the children trolley according to claim 2 or 7 or 8, is characterized in that: described sliding part is be sheathed on the sliding sleeve on described push rod slidably.

10. children trolley according to claim 1, is characterized in that: when described vehicle frame is in folded state, with the described wheel assembly of both sides mutually evenly draws close rear side at described pipe link after turning over after the described front component of both sides.