CN204713163U - Children trolley - Google Patents

Abstract

The utility model discloses a kind of children trolley, wherein vehicle frame at least comprises after poppet assembly, this after poppet assembly comprises the back stay laying respectively at the left and right sides, be connected to the cross bar described in both sides between back stay, wheel assembly comprises trailing wheel joint, be located at the trailing wheel on trailing wheel joint, trailing wheel joint can be connected to the bottom of back stay in left and right turningly, the rear control assembly for controlling trailing wheel joint rollover states is also provided with between vehicle frame and trailing wheel joint, when vehicle frame is in deployed condition, trailing wheel joint relative after poppet assembly under the effect of rear control assembly is fixed, two trailing wheels rollably can be supported on the bottom of after poppet assembly along the longitudinal direction, when vehicle frame is in folded state, trailing wheel joint under the effect of rear control assembly in left-right direction relatively back stay overturn to the inner side of vehicle frame, the wheel assembly of both sides is overturn in opposite directions and draws at the rear of after poppet assembly.Compact conformation after folding is smooth, is easy to carry about with one and storage, convenient for users to use.

Description

stroller

technical field

The utility model relates to a stroller for children.

Background technique

The children's stroller in the prior art usually has a foldable vehicle frame, a wheel assembly located at the bottom of the vehicle frame, and a locking mechanism for locking the vehicle frame in an unfolded position. At present, on the children's strollers on the market, when the stroller is folded, it is often only the folding of the frame, and the wheel assembly does not participate in the folding, which often leads to a relatively large overall size of the folded stroller, which is inconvenient to carry and store. .

Contents of the invention

The purpose of the utility model is to overcome the disadvantages of the prior art, and to provide a baby stroller with a flat and compact structure after 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 unfolded state and a folded state, a front wheel assembly arranged at the bottom front of the vehicle frame, two sets of rear wheel assemblies arranged at both sides of the rear bottom of the vehicle frame, As a locking mechanism for locking the vehicle frame in the unfolded state, the vehicle frame at least includes a rear support assembly, the rear support assembly includes rear support rods located on the left and right sides respectively, and the rear support rods connected to the two sides The cross bar between them, the rear wheel assembly includes a rear wheel joint and a rear wheel arranged on the rear wheel joint, and the rear wheel joint is connected to the bottom of the rear strut in a turnable left and right way, and the vehicle A rear control assembly for controlling the overturning state of the rear wheel joint is also provided between the frame and the rear wheel joint. When the vehicle frame is in the unfolded state, the rear wheel joint is under the action of the rear control assembly Fixed relative to the rear bracket assembly, the two rear wheels are supported on the bottom of the rear bracket assembly in a rolling manner along the front-to-back direction; Under the action of the left and right direction relative to the rear support rod to the inner side of the frame, so that the rear wheel assemblies on both sides are turned towards each other and folded behind the rear bracket assembly.

Preferably, the rear control assembly includes an elastic member disposed between the frame and the rear wheel joint for driving the rear wheel assembly to turn inwardly of the frame, and the frame also includes a seat post assembly, the rear of the seatpost assembly on each side of the frame is connected to the rear strut on that side, and the rear control assembly also includes a limiter located at the rear of the seatpost assembly The terminal, the limiting part provided on the rear wheel joint and capable of cooperating with the limiting terminal to limit the turning of the rear wheel assembly to the inside of the vehicle frame, when the vehicle frame is in the unfolded state, The limiting end collides with the limiting part; when the frame is in the folded state, the limiting end breaks away from the limiting part, and the rear wheel assembly under the action of the elastic member Flip down towards the inside of the frame.

Further, the seatpost assembly includes seatposts located on the left and right sides and extending along the front and rear directions, a support rod fixed on the seatpost, and the rear part of the seatpost is pivotally connected to the rear support On the rod, the limit end is a limit rod part that extends gradually downward from the rear end of the support rod, and the limit part is a limit surface arranged on the inner side of the rear wheel joint. When the vehicle frame is in the unfolded state, the limiting rod part is in contact with the limiting surface; when the vehicle frame is in the folded state, the limiting rod part is turned downwards to break away from the limiting surface .

Further, the elastic member is a tension spring arranged between the cross bar and the rear wheel joint.

Preferably, the rear wheel is pivotally connected to the rear end of the rear wheel joint through a rear wheel shaft, and the front end of the rear wheel joint is rotatably sleeved on the bottom of the rear support rod.

Preferably, the vehicle frame further includes a front bracket assembly and a push rod assembly, the upper portion of the front bracket assembly is pivotally connected to the lower portion of the push rod assembly, and the front portion of the seat post assembly is pivotally connected to the On the front bracket assembly, the rear of the seatpost assembly is pivotally connected to the rear bracket assembly, the upper part of the rear bracket assembly is pivotally connected to the push rod assembly, the front bracket assembly, the rear A four-bar linkage mechanism is formed among the bracket assembly, the seat post assembly and the push rod assembly.

Further, the front wheel assembly includes a front fork assembly and a front wheel arranged at the bottom of the front fork assembly, the front fork assembly is reversibly arranged on the front bracket assembly, and the vehicle frame and the A front control assembly for controlling the overturning state of the front fork assembly is arranged between the front fork assemblies. When the vehicle frame is in the unfolded state, the front fork assembly is fixed relative to the front bracket assembly, and the front wheel can move along the The front fork assembly is rolled and supported under the front bracket assembly in the front and rear direction; when the vehicle frame is in a folded state, the front fork assembly turns over to one side relative to the front fork assembly under the action of the front control assembly.

Furthermore, the upper part of the front fork assembly has a rotating shaft, and the rotating shaft is provided on the front bracket assembly so as to be rotatable around its own axis.

Furthermore, the front control assembly includes a puller arranged between the seatpost assembly and the front fork assembly, and is arranged between the front fork assembly and the front bracket assembly for driving the The elastic tension spring that the front fork assembly turns to one side, the elastic tension spring and the pulling member are respectively located on different sides of the axis of the rotating shaft. When the vehicle frame is unfolded, the pulling When the vehicle frame is folded, the pulling member is released, and the front fork assembly turns to one side relative to the front fork assembly under the action of the elastic tension spring.

As a specific implementation, when the vehicle frame is in the folded state, the front wheel is close to the front of the seatpost assembly and the rear bracket assembly, and the axles of the front wheel and the two rear wheels The heart lines are parallel to each other.

Due to the application of the above-mentioned technical solution, the utility model has the following advantages compared with the prior art: In the folding of the frame of the children's stroller of the utility model, both the rear wheel assembly and the front wheel assembly participate in the folding, and the folded stroller On the frame, the front wheel assembly and the rear wheel assemblies on both sides are flipped along the left and right directions respectively and are closely connected with the rods on the frame. The folded frame has a simple and flat structure, a small volume, and is easy to store and carry. , providing users with great convenience.

Description of drawings

Accompanying drawing 1 is the side view of the children's stroller of the present utility model in the unfolded state;

Accompanying drawing 2 is the three-dimensional view that the children's stroller of the present invention is in the unfolded state;

Accompanying drawing 3 is the side view of the children's stroller of the present invention in a half-folded state;

Accompanying drawing 4 is the perspective view of the children's stroller of the present utility model in a half-folded state;

Accompanying drawing 5 is the side view of the children's stroller of the present utility model in a folded state;

Accompanying drawing 6 is the perspective view of the children's stroller of the present utility model in a folded state;

Among them: 1. Rear support assembly; 11. Rear support rod; 12. Cross bar; 2. Front support assembly; 3. Seat post assembly; 31. Seat post; 32. Support rod; 32a. rod); 4. Push rod assembly; 5. Rear wheel assembly; 51. Rear wheel joint; 51a. Limiting part (limiting surface); 52. Rear wheel; 53. Rear axle; 6. Front wheel assembly; 61 , front fork assembly; 62, front wheel; 63, rotating shaft; 7, rear control assembly; 71, elastic member (extension spring); 8, front control assembly; 81, pulling member; 82, elastic extension spring.

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 vehicle frame in an unfolded state and a folded state, a front wheel assembly 6 located at the front of the bottom of the frame, and two sets of rear wheels located at both sides of the rear of the bottom of the frame. Component 5, a locking mechanism for locking the vehicle frame in the unfolded state.

The vehicle frame at least includes a rear bracket assembly 1 , and the rear bracket assembly 1 includes rear struts 11 respectively located on left and right sides, and a cross bar 12 connected between the rear struts 11 on both sides. The rear wheel assembly 5 includes a rear wheel joint 51 for connecting with the rear strut 11 , and a rear wheel 52 mounted on the rear wheel joint 51 . The rear wheel joint 51 is reversibly connected to the bottom of the rear strut 11. Here, the front end of the rear wheel joint 51 is rotatably sleeved on the bottom of the rear strut 11, so that the rear wheel assembly 5 as a whole is opposite to the rear strut. 11 realizes turning left and right; the rear wheel 52 is then rotatably installed on the rear end of the rear wheel joint 51 through the rear wheel shaft 53 .

Referring to the accompanying drawings, a rear control assembly 7 for controlling the overturning state of the rear wheel assembly 5 is provided between the vehicle frame and the rear wheel joint 51, and the rear control assembly 7 includes a The elastic member 71 is used to drive the rear wheel assembly 5 to turn over to the inside of the vehicle frame. The vehicle frame also includes a seatpost assembly 3, the rear portion of the seatpost assembly 3 on each side of the vehicle frame is connected to the side rear strut 11, and the rear control assembly 7 also includes a limiting end located at the rear of the seatpost assembly 3 Head, be located on the rear wheel joint 51 and can cooperate with above-mentioned limit end head to limit the limit portion that rear wheel assembly 5 turns over to vehicle frame inboard. When the vehicle frame is unfolded, the limiting end of the seat post assembly 3 is against the limiting part of the rear wheel joint 51, thereby forming a balance with the elastic member 71, and then making the rear wheel joint 51 and the rear bracket assembly 1 relatively fixed At this time, the rear wheel 52 is supported on the bottom of the rear bracket assembly 1 in a rolling manner along the front-rear direction; and when the vehicle frame is folded, the limiting end of the seat post assembly 3 is separated from the limiting portion of the rear wheel joint 51, and the elastic Under the effect of part 71, rear wheel joint 51 drives rear wheel 52 to turn over to the inboard of vehicle frame relative to rear strut 11 along the left and right direction, so that the rear wheel assembly 5 on both sides turns over and gathers in the rear of rear support assembly 1.

In this embodiment, the seat post assembly 3 includes a seat post 31 extending in the front-rear direction, a support rod 32 fixed on the seat post 31, the rear end of the seat post 31 is pivotally connected to the rear support rod 11, and the support rod 32 is U-shaped with the opening facing backward, and the rear ends on both sides of the support rod 32 are respectively extended downward and downward gradually to form a limit rod portion 32a, which is the limit end of the seat post assembly 3 . The limiting portion on the rear wheel joint 51 is a limiting surface 51 a disposed inside the rear wheel joint 51 . When the vehicle frame is unfolded, the limiting rod portion 32a resists on the limiting surface 51a, thereby restricting the rear wheel joint 51 from flipping inwardly of the vehicle frame; 1 breaks away from the limiting surface 51a when rotating, so that the rear wheel joint 51 is flipped towards the inner side of the vehicle frame relative to the rear bracket assembly 1 under the action of the elastic member 71 . Here, what the elastic member 71 adopts is a tension spring, and the two ends of the tension spring are respectively fixed on the cross bar 12 and the rear wheel joint 51 .

Referring to the accompanying drawings, the vehicle frame of this embodiment also includes a front bracket assembly 2 and a push rod assembly 4, the upper part of the front bracket assembly 2 is pivotally connected to the lower part of the push rod assembly 4, and the upper part of the rear bracket assembly 1 is pivotally connected. The shaft is connected on the push rod assembly 4, the seat post assembly 3 is distributed along the front and rear directions, the front portion of the seat post assembly 3 is pivotally connected on the front bracket assembly 2 and its rear portion is pivotally connected on the rear bracket assembly 1, like this, A four-bar linkage mechanism is formed among the front bracket assembly 2 , the rear bracket assembly 1 , the seat post assembly 3 and the push rod assembly 4 . The locking mechanism on the vehicle frame is a locking piece (not shown in the figure) for locking the above-mentioned four-bar linkage mechanism.

The front wheel assembly 6 comprises a front fork assembly 61 and a front wheel 62 arranged at the bottom of the front fork assembly 61. The front fork assembly 61 can be turned left and right and is arranged on the front bracket assembly 2. Here, the upper part of the front fork assembly 6 has a rotating shaft 63 , the rotating shaft 63 is rotatably arranged on the front bracket assembly 2 around its own axis, so as to drive the front wheel assembly 6 to turn left and right relative to the front fork assembly 2 as a whole.

Between the vehicle frame and the front fork assembly 61 is provided a front control assembly 8 for controlling the overturning state of the front fork assembly 61. The front control assembly 8 includes a pulling member 81 arranged between the seatpost assembly 3 and the front fork assembly 61, The elastic tension spring 82 provided between the front fork assembly 61 and the front bracket assembly 2 is used to drive the front fork assembly 61 to turn over to one side. The pulling member 81 can be a flexible pulling cable, and the pulling member 81 is arranged along the front-rear direction , its front end is fixed on one side of the front fork assembly 61, and its rear end is fixedly connected to the support rod 32 of the seatpost assembly 3. The elastic tension spring 82 and the pulling member 81 are respectively located on different sides of the axis of the rotating shaft 63 . When the vehicle frame is in the unfolded state, the pulling member 81 is tensioned, and the front fork assembly 61 is pulled and tensioned to one side by the pulling member 81 and pulled by the elastic tension spring 82 to the other side. Keeping the balance, the front fork assembly 61 and the front bracket assembly 2 are fixed to each other, and the front wheel 62 is supported under the front bracket assembly 2 in a rolling manner along the front and rear directions. And when the vehicle frame is folded, since the front bracket assembly 2 and the seat post assembly 3 gradually move closer, the distance between the front fork assembly 61 and the seat post assembly 3 gradually becomes smaller, and the pulling member 81 is gradually released, so that the elastic Under the action of the tension spring 82, the front fork assembly 61 is turned over to one side relative to the front bracket assembly 2, so that the front wheel assembly 6 is moved closer to the folded vehicle frame.

In this way, referring to Fig. 1 and Fig. 2, when the vehicle frame is in the unfolded state, the front bracket assembly 2 and the push rod assembly 4 extend along the same length direction, and the front bracket assembly 2, the rear bracket assembly 1, the seat post assembly 3 and the push rod assembly A triangular structure is formed between the rod assemblies 4, and the locking mechanism is locked. At this time, the limiting ends 32a on both sides of the rear part of the seatpost assembly 3 are respectively against the limiting surfaces 51a on the rear wheel joints 51 on both sides, and the limiting ends 32a on both sides of the rear wheel joints 51 respectively. The rear wheel assembly is fixed relative to the rear bracket assembly 1 under the action of the limiting end 32a and the elastic member 71; the pulling member 81 is pulled and tensioned between the front fork assembly 61 and the seat post assembly 3, and the front fork assembly 61 It is fixed relative to the front bracket assembly 2 under the action of the pulling member 81 and the elastic tension spring 82 . The front wheel 62 and the rear wheels 52 on both sides are supported on the ground so as to roll in the front-rear direction.

When the vehicle frame needs to be folded up, the locking mechanism is first unlocked, and then the push rod assembly 4 is turned backwards, as shown in Fig. 3 and Fig. The seat post assembly 3 is flipped relative to the front bracket assembly 2 and the rear bracket assembly 1, and the rear end of the seat post assembly 3 is turned down so that the rear limiting end 32a is gradually detached from the limiting surface 51a on the rear wheel joint 51, Under the action of the elastic member 71, the rear wheel joints 51 on both sides gradually turn towards the inner side of the vehicle frame; meanwhile, the distance between the front fork assembly 61 and the seat post assembly 3 gradually decreases so that the pulling member 81 is gradually pulled Released, the front fork assembly 61 is gradually flipped towards one side of the vehicle frame under the action of the elastic tension spring 71 .

Finally, as shown in Fig. 5 and Fig. 6, the front frame assembly 2, the rear frame assembly 1, the seat post assembly 3 and the push rod assembly 4 move closer to each other, and the rear wheel assemblies 5 on both sides turn over and move closer to the rear frame assembly 1. At the rear, the push rod assembly 4 is located behind the rear wheel assembly 5, and the front wheel assembly 6 is turned over to the side of the vehicle frame and moved closer to the front of the seatpost assembly 3 and the rear bracket assembly 1. After the folding is completed, the front wheel 62 and the two rear wheels 52 The axis lines of the bicycles are parallel to each other, and the folded frame has a compact structure and takes up very little space.

When the vehicle frame needs to be unfolded, the push rod assembly 4 is lifted up, so that the four-bar linkage mechanism formed by the front bracket assembly 2, the rear bracket assembly 1, the seatpost assembly 3 and the push rod assembly 4 is gradually expanded, and the front fork assembly 61 Under the action of the pulling member 81, it is gradually turned outward, so that the front wheel assembly 5 is gradually expanded relative to the front bracket assembly 2; On the limiting surface 51a on the top, the rear wheel joint 51 is gradually turned outward, so that the rear wheel assemblies 5 on both sides are gradually expanded relative to the rear bracket assembly 1. Finally, the vehicle frame is fully expanded, and the front wheel 62 and the two rear wheels 52 are jointly supported on the ground.

To sum up, the children's stroller of the present utility model has a simple structure, both the front wheel assembly 6 and the rear wheel assembly 5 participate in the folding of the frame, and the folded structure is compact and flat, easy to carry and store, and convenient for users to use .

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, be located at the front component of front portion at the bottom of described vehicle frame, be located at two groups of wheel assemblies of both sides, rear portion at the bottom of described vehicle frame, for described vehicle frame being locked lockout mechanism in the deployed state, it is characterized in that: described vehicle frame at least comprises after poppet assembly, described after poppet assembly comprises the back stay laying respectively at the left and right sides, be connected to the cross bar described in both sides between back stay, described wheel assembly comprises trailing wheel joint, be located at the trailing wheel on described trailing wheel joint, described trailing wheel joint can be connected to the bottom of described back stay in left and right turningly, the rear control assembly for controlling described trailing wheel joint rollover states is also provided with between described vehicle frame and described trailing wheel joint, when described vehicle frame is in deployed condition, under the effect of described trailing wheel joint control assembly in the rear, relatively described after poppet assembly is fixed, trailing wheel described in two rollably can be supported on the bottom of described after poppet assembly along the longitudinal direction, when described vehicle frame is in folded state, under the effect of described trailing wheel joint control assembly in the rear, relatively described back stay overturns to the inner side of described vehicle frame in left-right direction, makes the described wheel assembly of both sides overturn in opposite directions and draw the rear of bracket component in the rear in.

2. children trolley according to claim 1, it is characterized in that: described rear control assembly comprises to be located between described vehicle frame and described trailing wheel joint for ordering about the elastic component that described wheel assembly overturns to described frame inside, described vehicle frame also comprises a bar assembly, on every side of described vehicle frame, the described rear portion of seat bar assembly is connected with the described back stay of this side, described rear control assembly also comprises the spacing termination being located at described seat bar module back, be located at the limiting section that described trailing wheel joint can match limit described wheel assembly with described spacing termination and overturn to described frame inside, when described vehicle frame is in deployed condition, conflict on described limiting section in described spacing termination, when described vehicle frame is in folded state, described spacing termination departs from described limiting section, and described wheel assembly overturns to the inner side of described vehicle frame under the effect of described elastic component.

3. children trolley according to claim 2, it is characterized in that: described seat bar assembly comprises and lays respectively at the left and right sides and the seat bar extended along the longitudinal direction, the cramp bar be fixedly arranged on described seat bar, the back pivot of described seat bar is connected on described back stay, described spacing termination is the position-limited lever portion tilting to extend gradually to the back lower place from the rear end of described cramp bar, described limiting section is be located at the confined planes inside described trailing wheel joint, when described vehicle frame is in deployed condition, conflict on described confined planes in described position-limited lever portion; When described vehicle frame is in folded state, described position-limited lever portion overturns downwards and departs from described confined planes.

4. children trolley according to claim 2, is characterized in that: described elastic component is be located at the extension spring between described cross bar and described trailing wheel joint.

5. children trolley according to claim 1, is characterized in that: described trailing wheel is connected to the rear end of described trailing wheel joint by hind axle pivotally, and the front end of described trailing wheel joint is set in the bottom of described back stay rotationally.

6. according to the arbitrary described children trolley of claim 2 to 5, it is characterized in that: described vehicle frame also comprises front frame assembly and push-rod assembly, the top of described front frame assembly is connected with the bottom phase pivot of described push-rod assembly, the front portion of described seat bar assembly is pivotally connected on described front frame assembly, the back pivot of described seat bar assembly is connected on described after poppet assembly, the upper pivot of described after poppet assembly is connected on described push-rod assembly, forms four-bar linkage between described front frame assembly, after poppet assembly, seat bar assembly and push-rod assembly.

7. children trolley according to claim 6, it is characterized in that: described front component comprises front fork assembly, be located at front-wheel bottom described front fork assembly, described front fork assembly can be located on described front frame assembly in left and right turningly, be provided with for controlling control assembly before described front fork assembly rollover states between described vehicle frame and described front fork assembly, when described vehicle frame is in deployed condition, the relatively described front frame assembly of described front fork assembly is fixed, and described front-wheel rollably can be supported in the below of described front frame assembly along the longitudinal direction; When described vehicle frame is in folded state, described front fork assembly relatively described front fork assembly under the effect of described front control assembly flips to one side.

8. children trolley according to claim 7, is characterized in that: the top of described front fork assembly has S. A., and described S. A. can be located on described front frame assembly rotatably around Pivot Point Center line.

9. children trolley according to claim 8, it is characterized in that: described front control assembly comprises to be located at drawing piece between described seat bar assembly and described front fork assembly, to be located between described front fork assembly and described front frame assembly for ordering about the elasticity extension spring that described front fork assembly flips to one side, described elasticity extension spring, described drawing piece lay respectively at the different both sides of described S. A. axial line, when described vehicle frame launches, described drawing piece is tensioned; When described vehicle frame folding, described drawing piece is released, and described front fork assembly relatively described front fork assembly under the effect of described elasticity extension spring flips to one side.

10. children trolley according to claim 7, is characterized in that: when described vehicle frame is in folded state, and described front-wheel draws close the front at described seat bar assembly and described after poppet assembly, and described in described front-wheel and two, the axial line of trailing wheel is parallel to each other.