CN104290793A - Bidirectional folding stroller - Google Patents

Abstract

The invention relates to a two-way folding stroller for children, which includes side supports on both sides, a cross support and a locking piece for locking the stroller frame in an unfolded state. The side supports include a front wheel support, a rear wheel support, a push rod, The seat post extending in the front-rear direction, the cross brace is composed of the first connecting rod and the second connecting rod in the middle of the rotating connection, the upper end of the rear wheel bracket is rotating and connecting with the upper part of the push rod, and the lower part of the push rod can move along the front The length extension direction of the wheel bracket is slidably arranged on the front wheel bracket, the middle part of the seatpost is connected to the front wheel bracket in rotation, the rear end of the seatpost is connected to the rear wheel bracket in rotation, the upper ends of the first link and the second link The first connecting rod and the lower end of the second connecting rod are respectively connected in rotation with the lower parts of the front wheel brackets on both sides. The invention has simple, compact, stable and light structure, convenient folding, small folding volume and self-supporting after folding.

Description

A two-way folding stroller for children

technical field

The invention relates to a bidirectional folding stroller for children.

Background technique

The foldable children's/two-way folding children's stroller is mainly realized by setting a stroller frame with an open state and a folded state. In order to realize the function of folding, the main components that make up the stroller frame, such as the front wheel bracket, the rear wheel bracket, the cushion bar, the push handle bar, etc., are arranged to rotate and connect with each other, and the specific structural designs are varied. Designing a baby stroller that is easy to fold, small in size and low in cost is the goal pursued by the designers of the stroller, and it is also the key to making the stroller products competitive in the market.

Contents of the invention

The technical problem to be solved by the present invention is to provide a two-way folding children's stroller which is easy to fold, can stand on its own after folding, and has a small volume.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A two-way foldable children's stroller, comprising a stroller frame with an unfolded state and a folded state, a front wheel assembly and a rear wheel assembly, the stroller frame includes side brackets on both sides, and a cross brace arranged between the two side brackets And the locking piece that locks the stroller frame in the unfolded state, the side support includes a front wheel support with the front wheel assembly at the bottom, a rear wheel support with the rear wheel assembly at the bottom, a push rod, and a seat post extending in the front-rear direction , the cross support is composed of a first connecting rod and a second connecting rod in the middle of the rotation connection, and it is characterized in that: the upper end of the rear wheel bracket is connected with the upper part of the push rod, and the lower part of the push rod can move along the front wheel bracket. The length extension direction is slidably arranged on the front wheel bracket, the rear end of the seatpost is rotatably connected with the rear wheel bracket, the upper ends of the first link and the second link are respectively rotatably connected with the front ends of the seatpost on both sides, The lower ends of the first connecting rod and the second connecting rod are respectively rotatably connected to the lower parts of the front wheel brackets on both sides, and the seat post is also rotatably connected to the front wheel brackets.

Further, one of the two parts of the push rod and the front wheel bracket has a hollow lumen, and the other part is slidably inserted in the hollow lumen along its length direction. According to a specific and preferred aspect, the front wheel bracket has a hollow lumen, and the lower part of the push rod is slidably inserted in the hollow lumen of the front wheel bracket along its length direction.

Further, the trolley frame further includes a handrail, and the handrail is sleeved on the part provided with the hollow tube cavity in the two parts of the push rod and the front wheel bracket through the connecting sleeve.

Further, the stroller frame further includes backrest bars respectively located on both sides of the stroller, and the lower ends of the backrest bars are pivotally connected to the seat post.

Preferably, the locking piece is arranged between the push rod and the front wheel bracket for relatively locking the push rod and the front wheel bracket, and the cart further includes an unlocking piece for unlocking the locking piece. The locking part is usually specifically arranged on the front wheel bracket, and the unlocking part can be arranged on a component other than the front wheel bracket, and is set in linkage with the locking part through a traction cable. The unlocking piece can be, for example, an unlocking handle. In a specific embodiment, the unlocking member is arranged on the rear wheel bracket.

Further, the front wheel bracket includes a front wheel bracket body and a fixing member fixedly arranged on the front wheel bracket body and extending in the front-rear direction, the front wheel assembly is arranged at the bottom of the front wheel bracket body, and the lower part of the push rod is slidably arranged on the front On the main body of the wheel bracket; the rear part of the fixing part is connected with the seat post in rotation and the rotation connection is located at the rear of the main body of the front wheel bracket.

Further, the push rod and the rear wheel bracket are rotatably connected through a first pivot, the seatpost and the front wheel bracket are rotatably connected through a second pivot, the seatpost and the rear wheel bracket are rotatably connected through a third pivot, and the second The first connecting rod, the second connecting rod and the seatpost are respectively connected through the fourth pivot, the first connecting rod, the second connecting rod and the front wheel bracket are respectively connected through the fifth pivot, the first pivot, the second pivot The shaft and the third pivot are arranged in parallel, and both extend horizontally along the left and right directions of the cart, and the axis directions of the fourth pivot and the fifth pivot are perpendicular to the plane where the cross brace is located.

Preferably, the stroller frame further includes a rear brace assembly arranged between the rear wheel brackets on both sides. On the one hand, the setting of the rear strut assembly further enhances the stability of the vehicle frame; on the other hand, the rear strut assembly plays a role of locking the brackets on both sides to prevent the vehicle frame from being folded.

Specifically, the rear strut assembly includes a vertically extending longitudinal link located at the rear middle of the cart, an upper connection seat, a middle connection seat and a lower connection seat arranged on the longitudinal link from top to bottom in sequence, and the inner end The first cross bar and the second cross bar which are respectively connected to the opposite two sides of the upper connecting seat in rotation, the third cross bar and the fourth cross bar whose inner ends are respectively connected to the opposite two sides of the lower connecting seat in rotation, and the upper end The first slanting bar and the second slanting bar respectively connected to the opposite two sides of the middle connecting seat in rotation, the first horizontal bar, the second horizontal bar, the third horizontal bar and the fourth horizontal bar are all arranged horizontally, and their outer ends Both parts are rotatably connected with the said rear wheel bracket on the same side, and the lower ends of the first slant bar and the second slant bar are rotatably connected with the third cross bar and the fourth cross bar respectively. Preferably, an unlocking handle is connected to the lower connecting seat.

Preferably, when the stroller frame is in the unfolded state, the front wheel bracket and the push rod extend along the same length direction, and a triangular structure is formed between the front wheel bracket, the push rod, the rear wheel bracket and the seat post.

Preferably, the side supports on both sides are arranged symmetrically.

Due to the implementation of the above technical solutions, the present invention has the following advantages compared with the prior art:

The invention has simple, compact, stable and light structure, simple operation, convenient folding, small folding volume, self-standing after folding, and easy use, carrying and storage.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

Fig. 1 is a three-dimensional schematic view (expanded state) of a children's stroller according to the present invention;

Fig. 2 is a schematic front view (expanded state) of the children's stroller according to the present invention;

Fig. 3 is a schematic side view (expanded state) of the children's stroller according to the present invention;

Fig. 4 is a schematic side view (folded state) of the children's stroller according to the present invention;

Among them: 1. Front wheel assembly; 2. Rear wheel assembly; 3. Side support; 30. Main body of front wheel support; 31. Rear wheel support; 32. Push rod; 33. Seat post; 34. Back bar; 35. Fixed 4, cross brace; 40, first connecting rod; 42, second connecting rod; 5, rear strut assembly; 50, longitudinal connecting rod; 51, upper connecting seat; 52, middle connecting seat; 53, lower Connecting seat; 54, the first cross bar; 55, the second cross bar; 56, the third cross bar; 57, the fourth cross bar; 57, the first oblique bar; 58, the second oblique bar; 6, the handrail; 7 , tent frame; 8, locking piece; 9, unlocking handle; 10, pulling rope; 11, unlocking handle; A, first pivot; B, second pivot; C, third pivot; D, fifth pivot Axis; E, sixth pivot.

Detailed ways

As shown in FIGS. 1 to 4 , the two-way foldable stroller of this example includes a stroller frame with an unfolded state and a folded state, a front wheel assembly 1 and a rear wheel assembly 2 .

The stroller frame includes side brackets 3 arranged symmetrically on both sides, a cross bracket 4 arranged between the brackets 3 on both sides, a rear brace assembly 5 , armrests 6 and a tent frame 7 . The cross bracket 4 is composed of a first connecting rod 40 and a second connecting rod 41 which are rotatably connected in the middle.

The side bracket 3 includes a front wheel bracket, a rear wheel bracket 31 with a rear wheel assembly 2 at the bottom, a push rod 32 , a seat post 33 extending in the front-rear direction, and a back bar 34 . The front wheel bracket includes a front wheel bracket main body 30 with the front wheel assembly 1 on the bottom and a fixing piece 35 fixedly arranged on the front wheel bracket main body 30 and extending along the front-rear direction. The front wheel support main body 30 has a hollow lumen, and the lower part of the push rod 32 is slidably inserted in the hollow lumen of the front wheel support main body 30 along its length direction. The armrest 6 is fixedly sleeved on the front wheel bracket main body 30 through the connecting sleeve. The tent frame 7 is fixedly installed on the top of the push rod 32 by the tent seat. Between the main body 30 of the front wheel bracket and the push rod 32 is provided a locking piece 8 for locking the two relative to each other, and an unlocking handle 9 is provided on the rear wheel bracket 31, and the unlocking handle 9 and the locking piece 8 are linked through the traction cable 10 Setting, operating the unlocking handle 9 can unlock the locking member 8. The upper part of the push rod 32 is rotatably connected to the upper end of the rear wheel bracket 31 through the first pivot A, and the roughly middle part of the seat post 33 is rotatably connected to the rear end of the fixing member 35 through the second pivot B. Located at the rear of the front wheel bracket main body 30, the rear end of the seat post 33 is rotatably connected to the rear wheel support 31 through the third pivot C, and the front ends of the seat posts 33 on both sides are respectively connected to the first connection through the fourth pivot. The upper ends of the rod 40 and the second connecting rod 41 are rotatably connected, and the lower ends of the first connecting rod 40 and the second connecting rod 41 are respectively rotatably connected to the front wheel bracket main bodies 30 on both sides through the fifth pivot D. One end of the back bar 34 is rotatably connected to the rear of the seat post 33 through the sixth pivot E. The first pivot A, the second pivot B, the third pivot C, and the sixth pivot E are arranged in parallel, and all extend horizontally along the left and right directions of the trolley. The axis directions of the fourth pivot and the fifth pivot D perpendicular to the plane where the cross brace 4 is located. As shown in Figure 3, when the stroller frame is in the unfolded state, the front wheel bracket main body 30 and the push rod 32 extend along the same length direction, between the front wheel bracket main body 30 and the push rod 32, the rear wheel bracket 31, and the seat post 33 form a triangular structure.

The rear strut assembly 5 is a conventional structure, specifically comprising a longitudinal connecting rod 50 extending vertically at the rear middle of the cart, an upper connecting seat 51 and a middle connecting seat arranged successively on the longitudinal connecting rod 50 from top to bottom. 52 and the lower connecting seat 53, the first cross bar 54 and the second cross bar 55 that the inner ends are respectively connected with the opposite two sides of the upper connecting seat 51 and the second cross bar 55, and the inner ends are respectively connected with the opposite two sides of the lower connecting seat 53 for rotation The third cross bar 56 and the fourth cross bar 57, the first diagonal bar 58 and the second diagonal bar 59 that the upper end is connected with the opposite two sides of the connecting seat 52 in rotation respectively, the first cross bar 54, the second cross bar 55. The third crossbar 56 and the fourth crossbar 57 are all horizontally arranged, and their outer ends are all rotatably connected with the rear wheel bracket 31 on the same side, and the lower ends of the first oblique rod 58 and the second oblique rod 59 They are rotatably connected with the third crossbar 56 and the fourth crossbar 57 respectively. The unlocking handle 11 is connected to the lower connecting seat 53 .

In this example, the cart is folded through three turning points and a sliding rod, and the folding process is as follows: operate the unlocking handle 11 to unlock the rear strut assembly 5, operate the unlocking handle 9, and unlock the locking member 8 through the traction cable 10, at this time , lift the armrest 6 and pull it upwards, the bottom of the push rod 32 slides down in the front wheel bracket along the length direction of the front wheel bracket, driving the rear wheel bracket 31 to rotate relative to the push rod 32 and gradually move closer to the front wheel bracket, while driving the seat The rear part of the rod 33 rotates relative to the rear wheel bracket 31 and the middle part of the seat rod 33 rotates relative to the fixing part 35, so that the front part of the seat rod 33 is turned up and moves back toward the rear wheel bracket 31, and the upturn of the seat rod 33 drives the cross The support bracket 4 and the rear strut assembly 5 contract, so that the cart is laterally contracted, and the side supports 3 on both sides are moved closer. The folded stroller is shown in Figure 4, the front wheel bracket, the push rod 32, and the rear wheel bracket 31 are close to each other, and the seatpost 33 is folded between the front wheel bracket and the rear wheel bracket 31, so that the structure is compact and the volume is small .

In the trolley frame of the above-mentioned embodiment, it can also be set that the push rod 32 has a hollow lumen, and the upper part of the front wheel bracket main body 30 can be slidably inserted in the hollow lumen of the push rod 32 along its own length direction, and simultaneously The armrest 6 is arranged on the push rod 32, which can also realize the same folding and unfolding principle as the above-mentioned embodiment.

As mentioned above, the pushcart of the present invention has a simple, compact, stable and light structure, simple operation, convenient folding, small folding volume, self-standing after folding, and is easy to use, carry and store.

The present invention has been described in detail above, and its purpose is to allow those familiar with this field to understand the content of the present invention and implement it, and can not limit the scope of protection of the present invention. Effect changes or modifications should be covered within the protection scope of the present invention .

Claims (10)

1. A two-way foldable children's stroller, comprising a stroller frame with an unfolded state and a folded state, a front wheel assembly and a rear wheel assembly, the stroller frame includes side brackets positioned on both sides, and is located between the brackets on both sides The cross brace and the locking piece for locking the trolley frame in the unfolded state, the side support includes a front wheel support with the front wheel assembly at the bottom, a rear wheel support with the rear wheel assembly at the bottom, and a push rod . A seatpost extending in the front-rear direction, the cross brace is composed of a first connecting rod and a second connecting rod connected in rotation in the middle, and it is characterized in that: the upper end of the rear wheel support is connected to the push rod The upper part is rotatably connected, the lower part of the push rod can be slidably arranged on the front wheel support along the length extension direction of the front wheel support, and the rear end of the seat post rotates with the rear wheel support The upper ends of the first link and the second link are respectively connected to the front ends of the seatposts on both sides, and the lower ends of the first link and the second link are respectively connected to the front wheels on both sides. The lower part of the bracket is rotatably connected, and the seat post is also rotatably connected with the front wheel bracket. 2. The two-way folding stroller for children according to claim 1, characterized in that: one of the two parts of the push rod and the front wheel bracket has a hollow lumen, and the other part can slide along its own length inserted into the hollow lumen. 3. The two-way folding children's stroller according to claim 2, wherein the front wheel bracket has a hollow lumen, and the lower part of the push rod is inserted in the front wheel bracket in a sliding manner along its own length direction. in the hollow lumen. 4. The two-way foldable stroller for children according to claim 2, characterized in that: said stroller frame further comprises armrests and backrest bars respectively located on both sides of the stroller, said armrests are sheathed on said stroller through connecting sleeves. The push rod and the front wheel bracket are provided with a hollow tube cavity, and the lower end of the backrest rod is pivotally connected to the seat post. 5. The two-way folding stroller for children according to claim 1, wherein the locking member is arranged between the push rod and the front wheel bracket for relatively locking the push rod and the front wheel bracket , the cart further includes an unlocking piece for unlocking the locking piece, the unlocking piece is arranged on a component other than the front wheel bracket, and is set in linkage with the locking piece through a traction cable. 6. The two-way folding stroller for children according to claim 1, characterized in that: the front wheel bracket comprises a front wheel bracket body and a fixing member fixedly arranged on the front wheel bracket body and extending along the front-to-back direction, The front wheel assembly is arranged at the bottom of the main body of the front wheel bracket, the lower part of the push rod is slidably arranged on the main body of the front wheel bracket; the rear part of the fixing member is rotatably connected with the seat post And the rotating joint is located at the rear of the main body of the front wheel bracket. 7. The two-way folding stroller for children according to claim 1, characterized in that: the push rod and the rear wheel bracket are rotatably connected by a first pivot, and the seatpost and the front wheel bracket are connected by a second pivot. The two pivots are rotatably connected, the seat post and the rear wheel bracket are rotatably connected by a third pivot, the first link, the second link and the seat post are respectively rotatably connected by a fourth pivot, The first connecting rod, the second connecting rod and the front wheel bracket are respectively pivotally connected by the fifth pivot, and the first pivot, the second pivot, and the third pivot are arranged in parallel, and are all along the left and right sides of the cart. The direction extends horizontally, and the axis directions of the fourth pivot and the fifth pivot are perpendicular to the plane where the cross brace is located. 8. The two-way foldable stroller for children according to claim 1, wherein the stroller frame further comprises a rear strut assembly arranged between the rear wheel brackets on both sides. 9. The two-way foldable stroller for children according to claim 8, characterized in that: said rear strut assembly includes a longitudinal link located at the rear middle of the stroller and extending along the vertical direction. The inner ends of the upper connecting seat, the middle connecting seat and the lower connecting seat on the longitudinal connecting rod are respectively connected with the first crossbar and the second crossbar which are rotationally connected to the opposite sides of the upper connecting seat, and the inner ends are respectively The third cross bar and the fourth cross bar that are rotatably connected to the opposite two sides of the lower connecting seat, and the first oblique rod and the second oblique rod whose upper ends are respectively rotatably connected to the opposite two sides of the middle connecting seat, so The first cross bar, the second cross bar, the third cross bar and the fourth cross bar are all arranged horizontally, and their outer ends are all rotatably connected with the same side of the rear wheel bracket. The lower ends of a slanting bar and the second slanting bar are respectively rotatably connected with the third cross bar and the fourth cross bar. 10. The two-way foldable stroller for children according to claim 1, characterized in that: when the stroller frame is in the unfolded state, the front wheel bracket and the push rod extend along the same length direction, and the front wheel bracket and the push rod A triangular structure is formed among the push rod, the rear wheel bracket and the seat post.