CN108297925A - A kind of children trolley - Google Patents

Abstract

The invention discloses a kind of children trolleys, it include the stroller frame with expansion and folded state, wheel assembly, locking mechanism, side stand positioned at the left and right sides, be set between side stand can horizontal spreading and folding strut component, side stand per side includes fore-stock, rotate the seat bar connecting with fore-stock, lower end and the upper end of fore-stock rotate the pulling handle rod of connection, both ends rotate with pulling handle rod and seat bar the rear pole connecting respectively, the sliding part being slidably arranged on rear pole, lower end rotates the connecting rod connecting with sliding part, the upper end of connecting rod and the upper end of fore-stock and/or the lower end of pulling handle rod rotate connection, the lower end of strut component rotates with seat bar and connect, the upper end of strut component rotates with sliding part to be connect.This children trolley, simple in structure, rod piece quantity is few, good appearance is easy to install, folds and is unfolded easy to operate, folded configuration is compact, small, facilitates storage and carrying.

Description

a stroller for children

technical field

The invention relates to the technical field of children's articles, in particular to a children's stroller.

Background technique

The children's stroller in the prior art (for example, the announcement number is CN104670291, and the publication date is 2015-6-3), includes side brackets located on the left and right sides, and a support that can be folded and unfolded horizontally between the side brackets on both sides. bar assembly, side brackets on each side consisting of a front bracket, a lower pushrod pivotally connected to the front bracket, a rear bracket with an upper pivotal connection to the pushrod, a seatpost extending in a fore-aft direction, the front end of the seatpost pivoting The rear end of the seat post is rotatably connected to the rear bracket through the connecting piece, and the side bracket also includes a support rod, and the front end of the support rod is pivoted with the upper part of the front bracket or the lower part of the push rod To connect, the rear end of the support rod is pivotally connected to the sliding part, and the sliding part is arranged on the rear support so as to slide along the length extension direction of the rear support. In this patent, the rear end of the seat post is connected to the connecting member through a first pivot, and the connecting member is connected to the rear bracket through a second pivot, and the axes of the first pivot and the second pivot are perpendicular to each other. The rear cross support assembly includes two rear struts that intersect each other and are pivotally connected at the intersection, one end of each rear strut is pivotally connected to the rear bracket on one side, and the other end is pivotally connected to the slider . Moreover, the push rods on both sides of the patent are L-shaped rods, including the push rod body extending in the front and rear directions and the cross bars extending in the left and right directions. The cross bars on both sides are pivotally connected, so that when folded, the two sides The crossbars are close together and protrude forward, which may interfere with the front wheel and affect the folding.

Contents of the invention

The object of the present invention is to provide a children's stroller with different structures, which is flexible in folding, small in size and light in weight.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A stroller for children, comprising a stroller frame with an unfolded state and a folded state, a wheel assembly arranged at the bottom of the stroller frame, and a locking mechanism for locking the stroller frame in the unfolded state , the stroller frame includes side brackets respectively located on the left and right sides of the children's stroller, a strut assembly arranged between the side brackets on both sides and capable of being expanded and folded laterally, and all the side brackets on each side The side brackets include a front bracket, a seat post that is rotatably connected to the front bracket, a push handle rod whose lower end is rotatably connected to the upper end of the front bracket, and two ends that are respectively connected to the push handle rod. A rear stay rotatably connected to the seat post, a slider slidably arranged on the rear stay, a connecting rod whose lower end is rotatably connected to the slider, and the upper end of the connecting rod part is rotatably connected with the upper end of the front bracket and/or the lower end of the push handle rod, the lower end of the strut assembly is rotatably connected with the seat post, and the strut The upper end of the component is rotatably connected with the sliding piece.

Specifically, the strut assembly includes a first cross strut and a second cross strut that cross each other and are rotatably connected at the intersection, the lower end of the first cross strut is connected to the left cross strut The seat post is rotatably connected, and the upper end is rotatably connected to the sliding member located on the right side, the lower end of the second cross brace is rotatably connected to the seat post located on the right side, and the upper end is rotatably connected to the seat post located on the right side. The sliding part located on the left is rotatably connected.

Preferably, the strut assembly is rotatably connected to the slider through a first universal shaft, and the strut assembly is rotatably connected to the seatpost through a second universal shaft.

Further preferably, the first cardan shaft and the second cardan shaft are spherical shafts.

Specifically, the cart frame further includes a first cross bar whose left end is rotatably connected to the push handle rod on the left side, and a first cross bar whose left end is rotatably connected to the right end of the first cross bar. Two crossbars, a third crossbar whose left end is rotatably connected to the right end of the second crossbar, and the right end of the third crossbar is rotatably connected to the push handle bar on the right side.

Specifically, the cart frame further includes a connecting piece, the lower ends of the front brackets on both sides are fixedly connected to the connecting piece, and the connecting piece includes a first connecting piece and a second connecting piece that are rotatably connected. Two connectors.

Preferably, the wheel assembly includes a front wheel disposed at the bottom of the connecting piece, and two rear wheels disposed at the bottom of the seat post on both sides.

Specifically, the sliding member is a sliding sleeve that is slidably sleeved on the rear strut, and the rotational connection point between the connecting rod and the sliding member is located between the strut assembly and the above the swivel connection point of the slider.

Specifically, the seat post is in a curved shape protruding from front to back.

Specifically, the locking mechanism is arranged between the sliding member and the rear brace.

The orientation words such as left, right, up, down, front, back, etc. mentioned above are defined when the stroller is in the unfolded state and the orientation of the child rides on it.

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-mentioned technical solution, the present invention has the following advantages compared with the prior art: the children's stroller of the present invention has simple structure, unique shape, beautiful appearance, easy installation, convenient folding and unfolding operation, compact structure after folding, Small size, easy to store and carry.

Description of drawings

Accompanying drawing 1 is the structure schematic diagram of the expanded state of the children's stroller of the specific embodiment of the present invention;

Accompanying drawing 2-3 is the structure schematic diagram of the middle folding state of the children's stroller of the specific embodiment of the present invention;

Accompanying drawing 4 is the side view of the folded state of the children's stroller of the specific embodiment of the present invention;

Among them: 1. Push bar; 11. First crossbar; 12. Second crossbar; 13. Third crossbar; 2. Front bracket; 3. Rear strut; 4. Seatpost; 51. Ten thousand Axis; 52, the second cardan shaft; 6, sliding member; 71, the first cross strut; 72, the second cross strut; 8, connector; 81, front wheel; 82, rear wheel; 83, the first cross strut A connecting piece; 84, the second connecting piece; 85, the third connecting piece; 9, the connecting rod; 91, the first rotating shaft; 92, the second rotating shaft; 93, the third rotating shaft; 94, the fourth rotating shaft; 95, the first rotating shaft 96, the sixth rotating shaft; 99, the ninth rotating shaft; 910, the tenth rotating shaft; 911, the eleventh rotating shaft; 912, the twelfth rotating shaft.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in the accompanying drawings, the present invention relates to a stroller for children, comprising a stroller frame having an unfolded state and a folded state, a wheel assembly arranged at the bottom of the stroller frame, and a wheel assembly for locking the stroller frame in an unfolded state. state of the locking mechanism.

The stroller frame includes side brackets located on the left and right sides of the children's stroller, a strut assembly arranged between the side brackets on both sides and capable of being expanded and folded laterally, a connecting piece 8, a first cross bar 11, and a second cross bar 12. The third crossbar 13.

The setting method of the side brackets on both sides is the same, and the following uses the side bracket on one side as an example to illustrate. The side brackets on each side include a push bar 1, a front bracket 2, a rear strut 3, a seat post 4, a slider 6 and a connecting rod 9. The lower end of the push handle bar 1 is rotationally connected to the upper end of the front bracket 2 through the first rotating shaft 91; in order to make the cart look unique and beautiful, the seat post 4 is set in a curved shape protruding from front to back, and the seat post 4 It is rotatably connected with the front bracket 2 through the second rotating shaft 92; the upper end of the rear strut 3 is rotatably connected with the push bar 1 through the third rotating shaft 93, and the lower end of the rear strut 3 is connected with the seatpost 4 through the fourth rotating shaft 94 Rotational connection; the sliding part 6 is slidably arranged on the rear strut 3, the sliding part 6 can be a slider, or the sliding sleeve in this embodiment, and the sliding part 6 is slidably set in the extension direction of the rear strut 3 On the rear strut 3; the upper end of the connecting rod 9 can be rotatably connected to the upper end of the front bracket 2, and can also be rotatably connected to the lower end of the push bar 1, and the connecting rod 9 and the front bracket 2 or the push bar 1 pass through the first The five rotating shafts 95 are rotationally connected, and the connecting rod 9, the front bracket 2, and the push handle bar 1 can also be connected coaxially, and the lower end of the connecting rod 9 and the slider 6 are rotationally connected through the sixth rotating shaft 96.

The lower ends of the front brackets 2 on both sides are fixedly connected with the connecting piece 8, so that the rigidity of the folded vehicle frame is improved. The connecting piece 8 includes a first connecting piece 83 and a second connecting piece 84 that are rotatably connected. More preferably, the connecting piece 8 further includes a third connecting piece 85, and the first connecting piece 83 and the second connecting piece 84 are connected through the third Part 85 is rotatably connected.

The upper end of the push handle bar 1 on the left side is rotatably connected with the left end of the first cross bar 11 through the eighth rotating shaft (no mark in the figure), and the right end of the first cross bar 11 is connected with the left end of the second cross bar 12 Rotately connected by the ninth rotating shaft 99, the right end of the second cross bar 12 and the left end of the third cross bar 13 are rotationally connected by the tenth rotating shaft 910, the right end of the third cross bar 13 and the push handle bar on the right side The upper end of 1 is rotatably connected by an eleventh rotating shaft 911 . The setting of the first cross bar 11, the second cross bar 12, and the third cross bar 13 makes the vehicle frame open and lock and stretch the push handle bars 1 on the left and right sides, so that the vehicle frame has better rigidity.

The strut assembly includes a first cross strut 71 and a second cross strut 72 that cross each other and are rotatably connected by a twelfth rotating shaft 912 at the intersection. For flexible rotation, convenient folding and simple structure, the lower end of the first cross brace 71 is rotationally connected with the seat post 4 on the left side through the second cardan shaft 52, and the upper end is connected with the slider 6 on the right side through the second cardan shaft 52. A cardan shaft 51 is rotatably connected, the lower end of the second cross brace 72 is rotatably connected to the seat post 4 on the right side through the second cardan shaft 52, and the upper end is connected to the slider 6 on the left side through the first The cardan shaft 51 is rotatably connected. The first cardan shaft 51 and the second cardan shaft 52 in this embodiment are spherical shafts. Of course, the strut assembly can also adopt other structural forms, as long as it can realize the lateral expansion and folding between the side brackets on both sides.

On the side bracket on the same side, in order to prevent the bar from blocking the sliding of the slider, the rotational connection point (sixth rotating shaft 96) of the connecting rod 9 and the slider 6 is set at the connection point between the strut assembly and the slider 6 (the first a cardan shaft 51) above.

The wheel assembly includes front wheels 81 and rear wheels 82 . The front wheel 81 is arranged at the bottom of the connector 8. In this embodiment, the front wheel 81 is arranged at the bottom of the third connector 85. One wheel of the front wheel 81 can be provided. In order to make the stability better, this embodiment Among them, two front wheels 81 are provided; two rear wheels 82 are respectively arranged at the bottom of the seat post 4 on both sides.

In this embodiment, the locking mechanism is a locking piece (not marked in the figure) arranged between the sliding piece 6 and the rear stay 3 for locking the two. Compatible structure. The structure of the locking piece is not the key point of the present invention, as long as the locking piece can lock both of them.

When the cart frame needs to be folded up, first unlock the locking mechanism, turn the push lever 1 downward, the push lever 1 drives the connecting rod 9 to move upward, and the push lever 1 is pressed down to make the rear strut 3 downward movement, the slider 6 moves upward relative to the rear strut 3, the slider 6 drives the first cardan shaft 51 to slide upward, so that the first cross strut 71 and the second cross strut 72 slide upward and rotate relative to the sliding sleeve, the second cross strut 71 and the second cross strut 72 slide upward A cross strut 71 and a second cross strut 72 rotate toward each other, and then drive the side brackets on both sides and the first cross bar 11 and the third cross bar 13 to draw relatively close to each other. 1. Under the action of the four-bar linkage mechanism composed of the rear strut 3 and the seat post 4, the front brackets 2 on both sides rotate in the direction of the seat post 4. Finally, as shown in Figure 4, the front brackets 2 on both sides and the push handle bar 1. The seat post 4, the rear strut 3, and the connecting rod 9 are all close together, and the first cross strut 71 and the second cross strut 72 are folded between the side brackets on both sides. At this time, the second crossbar 12, the first crossbar 11 and the second crossbar 13 are arranged in a U shape, so that the bars of the folded cart are all stored in the middle of the vehicle frames on both sides, and each bar is more stable. Compact structure, small footprint.

When the cart frame needs to be unfolded, the push handle bar 1 is lifted up, and the push handle bar 1 drives the connecting rod 9 to move downward, and the push handle bar 1 is lifted to make the rear strut 3 move upward, and the sliding member 6 is relatively backward. The strut 3 moves downward, and the slider 6 drives the first cardan shaft 51 to slide downward, so that the first cross strut 71 and the second cross strut 72 slide downward and rotate relative to the sliding sleeve, and the first cross strut 71 and the second cross brace 72 unfold, and then drive the side brackets on both sides, the first crossbar 11 and the third crossbar 13 to unfold, and at the same time, the 4 Under the action of the four-bar linkage mechanism, the front brackets 2 on both sides move away from the seatpost 4 until the cart frame is fully unfolded, the locking mechanism is locked, and the unfolding operation of the cart is completed.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. a kind of children trolley, includes stroller frame with unfolded state and folded state, is set to the stroller frame The wheel assembly of bottom, the locking mechanism for the stroller frame to be locked in unfolded state, the stroller frame include Be located at the side stand of the left and right sides of the children trolley, be set to side stand described in both sides between being capable of horizontal spreading With the strut component of folding, it is characterised in that：The side stand per side includes fore-stock（2）And the fore-stock（2）Phase The seat bar of rotation connection（4）, lower end and the fore-stock（2）Upper end rotate the pulling handle rod of connection（1）, both ends Respectively with the pulling handle rod（1）With the seat bar（4）Rotate the rear pole of connection（3）, be slidably arranged in it is described after Strut（3）On sliding part（6）, lower end and the sliding part（6）Rotate the connecting rod of connection（9）, the connecting rod（9） Upper end and the fore-stock（2）Upper end and/or the pulling handle rod（1）Lower end rotate connection, it is described Strut component lower end and the seat bar（4）Rotate connection, the upper end of the strut component and the cunning Moving part（6）Rotate connection.

2. children trolley according to claim 1, it is characterised in that：The strut component includes intersecting and handing over Rotate the first cross strut of connection at fork（71）With the second cross strut（72）, the first cross strut（71）Under End and the seat bar described in the left side（4）Rotate connection, upper end and the sliding part for being located at right side（6）It rotates Connection, the second cross strut（72）Lower end with positioned at right side the seat bar（4）Rotate connection, upper end With the sliding part positioned at left side（6）Rotate connection.

3. children trolley according to claim 1 or 2, it is characterised in that：The strut component and the sliding part （6）Pass through the first universal shaft（51）Rotate connection, the strut component and the seat bar（4）Pass through the second universal shaft （52）Rotate connection.

4. children trolley according to claim 3, it is characterised in that：First universal shaft（51）With described second Universal shaft（52）For spherical axis.

5. children trolley according to claim 1, it is characterised in that：The stroller frame further includes left part and left side The pulling handle rod（1）Rotate the first crossbar of connection（11）, left part and the first crossbar（11）Right part phase The second crossbar of rotation connection（12）, left part and the second crossbar（12）Right part rotate the third cross bar of connection （13）, the third cross bar（13）Right part and right side the pulling handle rod（1）Rotate connection.

6. children trolley according to claim 1, it is characterised in that：The stroller frame further includes connector（8）, two The fore-stock of side（2）Lower end and the connector（8）It is fixedly connected, the connector（8）Including rotating First connector of connection（83）With the second connector（84）.

7. children trolley according to claim 6, it is characterised in that：The wheel assembly includes being set to the connection Part（8）The front-wheel of bottom（81）, be set to the seat bars of both sides（4）Two trailing wheels of bottom（82）.

8. children trolley according to claim 1, it is characterised in that：The sliding part（6）It is described to be slidably located in Rear pole（3）On sliding sleeve, the connecting rod（9）With the sliding part（6）Rotating joint be located at the strut Component and the sliding part（6）Rotating joint top.

9. children trolley according to claim 1, it is characterised in that：The seat bar（4）In raising up from front to back Curved shape.

10. children trolley according to claim 1, it is characterised in that：The locking mechanism is arranged in the sliding Part（6）With the rear pole（3）Between.