CN104843045B - A kind of children trolley - Google Patents

Abstract

The invention relates to a stroller for children, comprising a foldable stroller frame, a front wheel assembly, a rear wheel assembly, and a locking mechanism. The stroller frame includes: a front lower bracket, the lower end of which is provided with a front wheel assembly The front upper bracket, the front end of the front upper bracket is rotatably connected with the upper end of the front lower bracket; the rear upper bracket, the front end of the rear upper bracket is rotatably connected with the front upper bracket; the rear lower bracket, the lower end of the rear lower bracket A rear wheel assembly is provided; a seat post, the front end of the seat post is rotatably connected with the front lower bracket, and the rear end is rotatably connected with the rear lower bracket; a strut, the front end of the strut is rotatably connected with the front lower bracket The rear end of the rod, the rear end of the upper rear bracket, and the upper end of the lower rear bracket are mutually rotatably connected. The invention has simple structure, convenient folding, small and flat volume after folding, is convenient to carry and can be put into a suitcase.

Description

a stroller for children

technical field

The invention relates to a stroller for children.

Background technique

The children's stroller in the prior art (for example, the authorized announcement number is CN203637899U, and the authorized announcement date is June 11, 2014), includes a stroller frame with an unfolded position and a folded position, a front wheel assembly, a rear wheel assembly, and a The locking mechanism for locking the cart frame in the unfolded position, the seat provided on the cart frame, the cart frame includes side brackets located on the left and right sides, and a connecting frame connected between the side brackets on both sides, The stroller frame on each side includes a slider frame whose length extends in the up-down direction, a front upper bracket located on the front side of the slider bracket, a rear upper bracket located on the rear side of the slider bracket, an upper part and a lower part of the front upper bracket The front lower bracket that is rotatably connected around the front two axes, the rear lower bracket that is rotatably connected with the lower part of the upper rear bracket around the rear two axes, the front seatpost frame that is rotatably connected with the front upper bracket around the front three axes, and the rear upper bracket that is rotated around the rear The rear seat rod frame connected by three-axis rotation, the slide bar that can slide down on the slide bar frame along the length direction of the slide bar frame, and the upper part of the slide bar can be rotated around the seventh axis and can be arranged along the slide bar frame. The push rod frame that is slidably arranged in the length direction of the rod, the front connecting rod that is connected with the front seat rod frame around the front four-axis rotation at the upper part, the rear link that is connected with the rear seat rod frame around the rear four-axis rotation at the upper part, and the upper part of the front upper bracket , the upper part of the slide bar frame and two parts in the upper part of the rear upper bracket are rotatably connected, the third part is rotatably connected with one of the first two parts, the rear part of the front seat post frame, the rear seat post The rear part of the frame is rotatably connected with two of the lower three parts of the slide rod, the third part is rotatably connected with one of the first two parts, and the lower part of the front link is connected with the upper part of the front lower bracket around the front five axes Rotationally connected, the bottom of the rear link is connected with the top of the rear lower support around the rear five-axis rotation.

Contents of the invention

The technical problem to be solved by the present invention is to provide a child stroller with different structures.

In order to solve the above technical problems, a kind of technical scheme that the present invention adopts is:

A stroller for children, comprising a foldable stroller frame, a front wheel assembly, a rear wheel assembly, and a locking mechanism capable of locking the stroller frame in an unfolded state, and the stroller frame includes:

The front lower bracket, the lower end of the front lower bracket is provided with the front wheel assembly;

The front upper bracket, the front end of the front upper bracket is rotatably connected to the upper end of the front lower bracket;

The rear upper bracket, the front end of the rear upper bracket is rotatably connected to the front upper bracket;

The rear lower bracket, the lower end of the rear lower bracket is provided with the rear wheel assembly;

Seat post, the front end of the seat post is rotatably connected to the front lower bracket, and the rear end is rotatably connected to the rear lower bracket;

A strut, the front end of the strut is rotatably connected to the front lower bracket, the rear end of the strut, the rear end of the rear upper bracket, the rear lower bracket The three upper ends are rotatably connected to each other.

Specifically, when the cart frame is in the unfolded state, the rotational connection point between the seat post and the front lower bracket is located at the center of the rotational connection point between the strut and the front lower bracket above.

The cart frame also includes a push handle bar whose lower end is rotatably connected to the rear end of the front upper bracket.

Specifically, the rear end of the rear upper bracket is rotatably connected to the rear end of the strut through a first rotating shaft, and the upper end of the rear lower bracket is connected to the rear end of the strut Rotationally connected through the second rotating shaft; or, the rear end of the strut, the rear end of the rear upper bracket, and the upper end of the rear lower bracket are rotationally connected through the ninth rotating shaft; The front upper bracket is rotatably connected with the push bar, the rear upper bracket, and the front lower bracket through the third rotating shaft, the fourth rotating shaft, and the fifth rotating shaft respectively, and the seat post is respectively The sixth rotating shaft and the seventh rotating shaft are rotatably connected with the front lower bracket and the rear lower bracket, and the strut is rotatably connected with the front lower bracket through the eighth rotating shaft.

More specifically, when the stroller frame is in the unfolded state, the fourth rotating shaft is located below the front of the third rotating shaft, above the rear of the fifth rotating shaft, and above the seventh rotating shaft. above the front, the sixth shaft is located below the fifth shaft, above the eighth shaft, above the seventh shaft, the first shaft, the The second rotating shaft or the ninth rotating shaft is located at the lower rear of the fourth rotating shaft, the upper front of the seventh rotating shaft, and the upper rear of the eighth rotating shaft.

More specifically, the first rotating shaft, the second rotating shaft, the third rotating shaft, the fourth rotating shaft, the fifth rotating shaft, the sixth rotating shaft, and the second rotating shaft The axis lines of the seven rotating shafts, the eighth rotating shaft and the ninth rotating shaft are parallel and extend along the left-right direction of the baby stroller.

Specifically, the strut includes a strut body whose front end is rotatably connected to the front lower bracket through the eighth rotating shaft, and a connecting portion arranged on the rear end of the strut body. The rear end of the upper rear bracket and the upper end of the lower rear bracket are rotatably connected to opposite sides of the connecting portion through a first rotating shaft and a second rotating shaft respectively.

Specifically, the locking mechanism includes a first locking device disposed between the front upper bracket and the front lower bracket for relatively locking the front upper bracket and the front lower bracket.

More specifically, the locking mechanism further includes a drag cable arranged on the front end of the seatpost and capable of driving the first locking device to be unlocked.

Specifically, the locking mechanism includes a second locking device arranged between the push lever and the front upper bracket for relatively locking the push lever and the front upper bracket.

The orientation words such as front, rear, left, right, up, and down mentioned above are defined in the orientation of the stroller when it is in normal use.

The scope of the present invention is not limited to technical solutions formed by a specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or equivalent features. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art: the present invention has a simple structure, is convenient to fold, and is small and flat after folding, and is easy to carry and can be put into a suitcase.

Description of drawings

Accompanying drawing 1 is the front view of the present invention in unfolded state;

Accompanying drawing 2 is the front view of the present invention when switching between unfolded state and folded state;

Accompanying drawing 3 is the front view of the present invention when in folded state;

Accompanying drawing 4 is the perspective view of the present invention in unfolded state;

Accompanying drawing 5 is the explosion diagram of the present invention;

Among them: 1. Front wheel assembly; 2. Rear wheel assembly; 3. Cross bar; 4. Front lower bracket; 5. Front upper bracket; 6. Push lever; 7. Rear upper bracket; 8. Rear lower bracket; 9 , strut bar; 10, seat post; 11, first shaft; 12, second shaft; 13, third shaft; 14, fourth shaft; 15, fifth shaft; 16, sixth shaft; 17, seventh shaft ; 18, the eighth rotating shaft; 19, the first locking device; 20, the traction cable; 21, the second locking device; 91, the strut body; 92, the connecting part.

detailed description

As shown in the accompanying drawings, a child stroller includes a foldable stroller frame, a front wheel assembly 1, a rear wheel assembly 2, and a locking mechanism capable of locking the stroller frame in an unfolded state. It includes two side supports arranged symmetrically on the left and right sides of the stroller, and a plurality of cross bars 3 arranged between the two side supports.

The side bracket on each side includes a front lower bracket 4, a front upper bracket 5, a push bar 6, a rear upper bracket 7, a rear lower bracket 8, a strut 9, and a seat post 10.

The lower end of the front lower frame 4 is provided with a front wheel assembly 1 , and the lower end of the rear lower frame 8 is provided with a rear wheel assembly 2 .

The front end of the front upper bracket 5 is rotatably connected with the upper end of the front lower bracket 4 through the fifth rotating shaft 15, and the lower end of the push bar 6 is rotatably connected with the rear end of the front upper bracket 5 through the third rotating shaft 13. The front end of the upper bracket 7 is rotatably connected to the front upper bracket 5 through the fourth rotating shaft 14, the rear end of the seatpost 10 is rotatably connected to the rear lower bracket 8 through the seventh rotating shaft 17, and the front end of the seatpost 10 is connected to the front lower The support 4 is rotationally connected by the sixth rotating shaft 16, the front end of the strut 9 is rotationally connected with the front lower support 4 by the eighth rotating shaft 18, the rear end of the strut 9, the rear end of the rear upper support 7, the rear lower The upper end of support 8 is mutually rotatably connected, and can be that the rear end of rear upper support 7 and the upper end of rear lower support 8 are rotatably connected, and the rear end of strut 9 is connected with rear upper support 7 or rear lower support 8. Phase rotation connection, also can be that the rear end portion of rear upper bracket 7 and the upper end portion of rear lower bracket 8 are respectively connected with the rear end portion of strut 9; The rear end of the rear end, the upper end of the rear lower bracket 8 are connected in rotation.

In a specific embodiment, the rear end of the strut 9 , the rear end of the rear upper bracket 7 , and the upper end of the rear lower bracket 8 are rotatably connected by a ninth rotating shaft (not shown).

In another specific embodiment, the strut 9 includes a strut body 91 whose front end is rotatably connected to the front lower bracket 4 through the eighth rotating shaft 18, and a connecting portion 92 arranged on the rear end of the strut body 91. The rear end of the upper bracket 7 and the upper end of the rear lower bracket 8 are rotatably connected to opposite sides of the connecting portion 92 through the first rotating shaft 11 and the second rotating shaft 12 respectively (as shown in FIGS. 1 to 5 ).

When the stroller frame is in the expanded state and the rear end of the strut 9, the rear end of the upper rear bracket 7, and the upper end of the rear lower bracket 8 are rotationally connected by the ninth rotating shaft, the fourth rotating shaft 14 is located at the third The front and bottom of the rotating shaft 13, the fifth rotating shaft 15, the ninth rotating shaft, the seventh rotating shaft 17, the sixth rotating shaft 16, the fifth rotating shaft 15, the eighth rotating shaft 18, Above the front of the seventh shaft 17 , the ninth shaft is located at the bottom of the fourth shaft 14 , above the front of the seventh shaft 17 , and above the rear of the eighth shaft 18 .

When the stroller frame is in the expanded state and the rear end of the rear upper bracket 7 and the upper end of the rear lower bracket 8 are rotationally connected to the opposite sides of the connecting portion 92 through the first rotating shaft 11 and the second rotating shaft 12 respectively, the second The four rotating shafts 14 are located at the front and bottom of the third rotating shaft 13, the rear and upper part of the fifth rotating shaft 15, the front and upper part of the first rotating shaft 11, and the front and upper part of the seventh rotating shaft 17. The sixth rotating shaft 16 is located at the front and lower of the fifth rotating shaft 15, The upper rear of the eighth rotating shaft 18 and the upper front of the seventh rotating shaft 17; above.

When the cart frame is in the unfolded state, the extension directions of the front lower bracket 4, the front upper bracket 5, and the push handle bar 6 are consistent, and they all extend backwards from bottom to top; the extension of the rear upper bracket 7 and the rear lower bracket 8 The direction is the same, and they all extend obliquely forward from bottom to top.

The axis lines of the first rotating shaft 11, the second rotating shaft 12, the third rotating shaft 13, the fourth rotating shaft 14, the fifth rotating shaft 15, the sixth rotating shaft 16, the seventh rotating shaft 17, the eighth rotating shaft 18, and the ninth rotating shaft are parallel and Extend along the left and right directions of the stroller.

The locking mechanism includes a first locking device 19 arranged between the front upper bracket 5 and the front lower bracket 4 for relatively locking the front upper bracket 5 and the front lower bracket 4, which is arranged on the front end of the seatpost 10 and can drive the first The pulling rope 20 unlocked by the locking device 19 and the second locking device 21 arranged between the push handle bar 6 and the front upper bracket 5 are used for relatively locking the push handle bar 6 and the front upper bracket 5 .

In order to unlock the first locking devices 19 on both sides simultaneously, the traction cables 20 are respectively arranged at the front ends of the two seatposts 10 and connected to the two first locking devices 19 .

The locking and unlocking of the first locking device 19 and the second locking device 21 are not the focus of the protection of the present invention, as long as the relative locking of the two components can be achieved, for example, the joint structure described in the publication number CN203332177U can be used.

Working principle: When it is necessary to switch from the unfolded state to the folded state, unlock the second locking device 21, turn the push lever 6 forward to be parallel to the front upper bracket 5, pull the traction cable 20 upwards, and drive the first locking device 19 to unlock , at this time, the front upper bracket 5, the front lower bracket 4, the struts 9, and the rear upper bracket 7 form a foldable four-link structure, and the front lower bracket 4 rotates backward around the fifth rotating shaft 15. Under the action of the rod 10, the rear upper bracket 7 rotates backward around the fourth rotating shaft 14, and the rear lower bracket 8 rotates forward around the second rotating shaft 12 to complete the transition from the unfolded state to the folded state. When the folding is completed, the front wheel assembly 1 Located at the rear of the stroller, the rear wheel assembly 2 is located at the front of the stroller, the front upper bracket 5, the front lower bracket 4, the push bar 6, the rear upper bracket 7, the rear lower bracket 8, the strut 9, the seat The rods 10 are all close to each other, the front upper bracket 5, the push handle bar 6, the rear upper bracket 7, the rear lower bracket 8, the strut 9, and the seat post 10 all extend roughly along the horizontal direction. Flat for easy portability.

When it is necessary to switch from the folded state to the unfolded state, pull the push handle bar 6 upwards, and under the action of its own gravity, the front upper bracket 5, the front lower bracket 4, the rear upper bracket 7, and the rear lower bracket 8 are far away from each other to the cart. The frame is unfolded, and the first locking device 19 and the second locking device 21 are locked. At this time, the front upper bracket 5, the front lower bracket 4, the strut 9, and the rear upper bracket 7 form a stable three-link structure, completing the transition from the folded state to the Expand state transitions.

As mentioned above, we have fully described according to the purpose of the present invention, but the present invention is not limited to the above-mentioned embodiments and implementation methods. Practitioners in the relevant technical fields may make various changes and implementations within the scope permitted by the technical ideas of the present invention.

Claims (9)

1. a kind of children trolley, including can fold stroller frame, front component（1）, wheel assembly（2）, can will be described Stroller frame be locked in the locking mechanism of deployed condition, it is characterised in that：Described stroller frame includes：

Preceding lower carriage（4）, described preceding lower carriage（4）Bottom be provided with described front component（1）；

Preceding upper bracket（5）, described preceding upper bracket（5）Leading section and described preceding lower carriage（4）Upper end rotate company Connect；

Upper rear support（7）, described upper rear support（7）Leading section and described preceding upper bracket（5）Rotate connection；

Rami posterior inferior frame（8）, described rami posterior inferior frame（8）Bottom be provided with described wheel assembly（2）；

Seat bar（10）, described seat bar（10）Leading section and described preceding lower carriage（4）Rotate connection, rearward end with it is described Rami posterior inferior frame（8）Rotate connection；

Strut（9）, described strut（9）Leading section and described preceding lower carriage（4）Rotate connection, described strut（9） Rearward end, described upper rear support（7）Rearward end, described rami posterior inferior frame（8）Upper end three mutually rotate connection；

Described stroller frame also includes bottom and described preceding upper bracket（5）Rearward end rotate the pulling handle rod of connection （6）；

When described stroller frame is changed from deployed condition to folded state, described preceding upper bracket（5）, described front lower branch Frame（4）, described strut（9）, described upper rear support（7）Form the four-bar linkage structure that can be folded.

2. children trolley according to claim 1, it is characterised in that：When described stroller frame is in deployed condition, Described seat bar（10）With described preceding lower carriage（4）Rotate tie point be located at described strut（9）With described front lower branch Frame（4）Rotation tie point top.

3. children trolley according to claim 1, it is characterised in that：Described upper rear support（7）Rearward end with it is described Strut（9）Rearward end pass through first rotating shaft（11）Rotate connection, described rami posterior inferior frame（8）Upper end with it is described Strut（9）Rearward end pass through the second rotating shaft（12）Rotate connection；Or, described strut（9）Rearward end, it is described after Upper bracket（7）Rearward end, described rami posterior inferior frame（8）Upper end three rotated connection by the 9th rotating shaft；Described Preceding upper bracket（5）Pass through the 3rd rotating shaft respectively（13）, the 4th rotating shaft（14）, the 5th rotating shaft（15）With described pulling handle rod（6）, institute The upper rear support stated（7）, described preceding lower carriage（4）Rotate connection, described seat bar（10）Pass through the 6th rotating shaft respectively （16）With the 7th rotating shaft（17）With described preceding lower carriage（4）With described rami posterior inferior frame（8）Rotate connection, described strut （9）With described preceding lower carriage（4）Pass through eighth-turn axle（18）Rotate connection.

4. children trolley according to claim 3, it is characterised in that：When described stroller frame is in deployed condition, The 4th described rotating shaft（14）Positioned at the 3rd described rotating shaft（13）Front lower place, the 5th described rotating shaft（15）Back upper place, The 7th described rotating shaft（17）Front upper place, the 6th described rotating shaft（16）Positioned at the 5th described rotating shaft（15）Front lower place, Described eighth-turn axle（18）Back upper place, the 7th described rotating shaft（17）Front upper place, described first rotating shaft（11）, it is described The second rotating shaft（12）Or the 9th described rotating shaft is located at the 4th described rotating shaft（14）The back lower place, the 7th described rotating shaft （17）Front upper place, described eighth-turn axle（18）Back upper place.

5. children trolley according to claim 3, it is characterised in that：Described first rotating shaft（11）, described second turn Axle（12）, described 3rd rotating shaft（13）, described 4th rotating shaft（14）, described 5th rotating shaft（15）, described 6th turn Axle（16）, described 7th rotating shaft（17）, described eighth-turn axle（18）, described 9th rotating shaft axial line is parallel and edge The left and right directions extension of described children trolley.

6. children trolley according to claim 1, it is characterised in that：Described strut（9）Including leading section with it is described Preceding lower carriage（4）Pass through eighth-turn axle（18）Rotate the strut body of connection（91）, be arranged on described strut body（91） Rearward end on connecting portion（92）, described upper rear support（7）Rearward end and described rami posterior inferior frame（8）Upper part First rotating shaft is not passed through（11）With the second rotating shaft（12）With described connecting portion（92）Opposite sides rotate connection.

7. children trolley according to claim 1, it is characterised in that：Described locking mechanism include being arranged on it is described before Upper bracket（5）With described preceding lower carriage（4）Between be used for described preceding upper bracket（5）With described preceding lower carriage（4）Phase To the first locking device of locking（19）.

8. children trolley according to claim 7, it is characterised in that：Described locking mechanism also includes being arranged on described Seat bar（10）Leading section on and can drive the first described locking device（19）The hauling rope of unblock（20）.

9. children trolley according to claim 1, it is characterised in that：Described locking mechanism includes being arranged on described push away Barre（6）With described preceding upper bracket（5）Between be used for described pulling handle rod（6）With described preceding upper bracket（5）Relative lock The second fixed locking device（21）.