CN103963818B - Stroller - Google Patents

Abstract

The invention discloses a stroller for children, wherein the stroller frame includes a push rod, a front support with a front wheel assembly at the bottom, a rear support with a rear wheel assembly at the bottom, a seat post, and a first connecting rod and a second connecting rod. The connecting rod, the front part of the seat post is rotatably connected to the lower part of the push rod, the rear part of the seat post is rotatably connected to the rear bracket, the upper part of the front bracket, the upper part of the rear bracket and one end of the first connecting rod are mutually rotatable Connection, the other end of the first link is rotatably connected to the push rod, a four-bar linkage mechanism is formed between the push rod, seat post, rear bracket and the first link, and one end of the second link is rotatably connected to the front bracket , the other end of the second link is rotatably connected to the front portion of the seat post or the lower portion of the push rod. When folding the stroller, it only needs to be unlocked and then push and pull the push rod forward to make the rods close to each other to complete the folding.

Description

stroller

technical field

The invention relates to a stroller for children.

Background technique

The children's stroller in the prior art usually includes a stroller frame with an unfolded position and a folded position, a front wheel assembly and a rear wheel assembly arranged at the lower part of the stroller frame, and a body that can support the human body on the stroller frame. Body support, locking mechanism for locking the stroller frame in the deployed position. There are many types of existing cart frames, the number of rods of the cart frame is different, and the connection relationship and connection position between the rods are all different, so the folding principles and folding methods are also different.

Contents of the invention

The object of the present invention is to provide a baby stroller with simple structure, which is convenient to unfold and fold.

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

A children's stroller comprising a stroller frame having an unfolded position and a folded position, a front wheel assembly, a rear wheel assembly, a locking mechanism for locking the stroller frame in the booth position, the stroller The vehicle frame includes a push rod, a front bracket with the front wheel assembly at the bottom, a rear bracket with the rear wheel assembly at the bottom, a seatpost, and a first link and a second link. The part is rotatably connected with the lower part of the push rod, the rear part of the seat post is rotatably connected to the rear bracket, the upper part of the front bracket, the upper part of the rear bracket and the first link One ends are rotatably connected to each other, the other end of the first connecting rod is rotatably connected to the push rod, and the push rod, the seat post, the rear bracket and the first connecting rod form a second A four-bar linkage mechanism, one end of the second link is rotatably connected to the front bracket, the other end of the second link is rotatably connected to the front of the seat post, and the seat post , the second four-bar linkage mechanism is formed between the rear bracket, the front bracket and the second connecting rod. When the cart frame is folded, the push rod tilts forward to drive the first connecting rod 1. The seat post and the second connecting rod rotate to gradually move closer to the front support, and the said rear support gradually moves closer to the front support under the drive of the seat post.

Preferably, the other end of the second link, the lower portion of the push rod, and the front portion of the seatpost are rotationally connected together.

Further preferably, the locking mechanism is arranged at any transition of the four-bar linkage mechanism or at any transition of the second link.

Preferably, an electric bell is provided at the rotational connection between the front support, the rear support and the first connecting rod, and the electric bell is used to lock the rear support and the first connecting rod.

Further preferably, the cart frame includes side brackets on both sides, and a cross bar connected between the side brackets on both sides, and an unlocking knob for unlocking the electric bell is provided on the cross bar.

Still further preferably, the side brackets on each side include the rear bracket, the first connecting rod, and the electric bell, and the cross bar is fixedly connected between the electric bells on both sides.

Preferably, the stroller frame further includes a handrail, and the two ends of the handrail are respectively fixedly connected to the first connecting rods on both sides.

Preferably, the push rod can be folded along its own length.

Preferably, the other end of the second link is rotatably connected to the lower part of the push rod, and the push rod, the first link, the front bracket and the second link form a Four-bar linkage.

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, when folding, the locking mechanism is unlocked first, so that the rotating joints between the rods are in an active state, and the forward Pushing and pulling the push rod can make the first connecting rod, seatpost and second connecting rod rotate relative to the front bracket and gradually move closer to the front bracket. Folding of the frame, the folded stroller frame can be in a self-supporting state. The baby stroller has a simple structure and is convenient to fold and open. The folded stroller frame occupies little space and is easy to carry and store.

Description of drawings

Accompanying drawing 1 is the side view when the stroller of the present invention is in the deployed position;

Accompanying drawing 2 is the three-dimensional view when the stroller of the present invention is in the deployed position;

Accompanying drawing 3 is the side view when the push rod on the children's stroller of the present invention is folded;

Accompanying drawing 4 is the three-dimensional view when push rod is folded on the children's stroller of the present invention;

Accompanying drawing 5 is the side view when the stroller of the present invention is in a half-folded state;

Accompanying drawing 6 is the perspective view when the children's pushchair of the present invention is in a half-folded state;

Accompanying drawing 7 is the side view when the stroller of the present invention is in the folded position;

Accompanying drawing 8 is the three-dimensional view when the stroller of the present invention is in the folded position;

Among them: 1, push rod; 101, lower push rod; 102, upper push rod; 103, push rod locking piece;

2. Front bracket; 3. Rear bracket; 4. Seat post; 5. First connecting rod; 6. Second connecting rod; 7. Handrail rod; 8. First shaft; 9. Second shaft; 10. Electric bell; 11. Cross bar; 12. Unlock knob; 13. Front wheel assembly; 14. Rear wheel assembly.

detailed description

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

The following definitions of direction are all defined according to the direction observed by the child sitting and standing on the stroller when the stroller is in the unfolded state.

Referring to the children's stroller shown in Figures 1 to 8, it has a stroller frame in an unfolded position and a folded position, and a front wheel assembly 13 and a rear wheel assembly 14 located at the bottom of the stroller frame for locking the stroller frame. Locking mechanism in unfolded position.

The stroller frame includes side supports on both sides, and the side supports on each side include a push rod 1, a front support 2 with a front wheel assembly 13 installed on the bottom, a rear support 3 with a rear wheel assembly 14 installed at the bottom, and The seatpost 4 between the push rod 1 and the rear bracket 3 , the side bracket also includes a first link 5 and a second link 6 .

The push rod 1 can be folded along its own length, and it can be a telescopic rod, or it can be set as the upper push rod 102 and the lower push rod 101 which are mutually rotatably connected in this embodiment, and the upper push rod 102 and the lower push rod 101 A push rod lock 103 is provided at the transition between them, and the push rod lock 103 can be an electric bell. When it is unlocked, the upper push rod 102 can be turned over relative to the lower push rod 101 to fold the push rod 1 .

The front portion of the seat post 4 is rotatably connected to the bottom of the lower push rod 101, the rear portion of the seat post 4 is rotatably connected to the rear support 3, the top of the rear support 3, the top of the front support 2 and the first connecting rod 5 One end is rotatably connected to each other through the first shaft 8, and the other end of the first link 5 is rotatably connected to the lower push rod 101. The first link 5, the lower push rod 101, the seat post 4 and the rear bracket 3 form a The first four-bar linkage mechanism.

One end of the second link 6 is rotatably connected to the front bracket 2, and its other end is rotatably connected to the bottom of the lower push rod 101 or rotatably connected to the front of the seatpost 4. In this embodiment, the second link The above-mentioned other end of 6, the lower part of the lower push rod 101, and the front part of the seat post 4 are connected to each other through the second shaft 9 so as to rotate, and the axis line of the second shaft 9 is parallel to the axis line of the first shaft 8. ground setting. In this way, a four-bar linkage mechanism is formed between the lower push rod 101, the first connecting rod 5, the front bracket 2 and the second connecting rod 6, and also between the seat post 4, the rear bracket 3, the front bracket 2 and the second connecting rod 6. A four-bar linkage (second four-bar linkage) is formed.

The locking mechanism can be arranged at any junction of the first four-bar linkage formed between the first connecting rod 5, the lower push rod 101, the seat post 4 and the rear bracket 3, or it can be arranged at the second connecting rod 6 The transition between the front bracket 2 or the transition between the second connecting rod 6 and the lower push rod 101 and the front of the seat post 4 . When the locking mechanism is locked, the above-mentioned four-bar linkage mechanism is in a stable state, so that the cart frame is in a stable unfolded state. When the locking mechanism is unlocked, the state of the above-mentioned four-bar linkage mechanism can be adjusted, so that the stroller frame can be unfolded in various states.

In this embodiment, the locking mechanism is an electric bell 10 located at the rotational connection between the front bracket 2, the rear bracket 3 and the first connecting rod 5, and the electric bell 10 is used to lock the rear bracket 3 and the first connecting rod 5 of the lock. Also be provided with crossbar 11 between the side brackets on both sides, this crossbar 11 is fixedly connected between the electric bell 10 on both sides, is provided with on the crossbar 11 and is used for unlocking knob 12 to electric bell 10 unlocking, only needs a single Rotating the unlocking knob 12 by hand can only unlock the electric bell 10, and the operation is convenient. Of course, the crossbar 11 may not be provided, but the electric bell 10 is unlocked by setting an unlock button on the electric bell 10, but such setting requires two-handed operation or single-handed unlocking one by one, and the operation is relatively cumbersome.

Referring to the accompanying drawings, the cart frame also includes a handrail 7, the handrail 7 is U-shaped with the opening facing backward, and the two ends of the handrail 7 are detachably connected to the first connecting rods 5 on both sides. . During the folding process of the stroller, the armrest bar 7 can rotate synchronously with the first connecting rod 5 without taking it down.

The unfolded state of the stroller is shown in Figures 1 and 2. When the stroller needs to be folded, the push rod lock 103 is first unlocked, and the upper push rod 102 is turned forward relative to the lower push rod 101, so that the push rod 1 Fold, as shown in Figure 3 and Figure 4. Then the user lifts the crossbar 11 and rotates the unlock knob 12 to unlock the electric bell 10. At this time, the first four-bar linkage mechanism formed between the first connecting rod 5, the lower push rod 101, the seat post 4 and the rear bracket 3, the lower The four-bar linkage formed between the push rod 101, the first connecting rod 5, the front bracket 2 and the second connecting rod 6, the first connecting rod formed between the seat post 4, the rear bracket 3, the front bracket 2 and the second connecting rod 6 The two and four link mechanisms are all in a movable state. Under the action of gravity or the force of pushing and pulling the push rod 1 forward, the push rod 1 tilts forward to drive the first connecting rod 5, the seat post 4 and the second connecting rod 6 Rotate to move closer to the front bracket 2, and at the same time, driven by the seat post 4, the rear bracket 3 gradually moves closer to the front bracket 2, as shown in Figures 5 and 6. Finally, the push rod 1, the front bracket 2, the rear bracket 3, the seat post 4, the first link 5 and the second link 6 are all close to each other, and can be placed in a self-supporting state as shown in Figure 7 after folding, or as shown in Figure 8 The state in which the center cross is placed on the ground. In the above folding process, it can basically be folded in one hand, and the folding operation is very convenient. The folded cart frame has a compact structure and takes up little space.

When the stroller needs to be unfolded for use, in the state shown in Fig. 7 and Fig. 8, first, the upper push rod 102 is turned backward relative to the lower push rod 101, so that the push rod 1 is unfolded, and then the push rod 1 is pulled backward , the lower push rod 101 drives the first link 5, the seat post 4 and the second link 6 to turn backwards and gradually move away from the front bracket 2. Driven by the seat post 4, the rear bracket 3 is gradually turned backwards relative to the front bracket 2 And relative front support 2 is launched, and when being deployed to proper unfolding state, electric bell 10 is locked, and this stroller vehicle frame promptly is locked under this unfolding position, as shown in Figure 1, Figure 2.

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 (9)

1. a kind of children trolley, including having the stroller frame of expanded position and folding position, front component, wheel assembly, use In the locking mechanism that described stroller frame is locked in described expanded position it is characterised in that: described stroller frame include push rod, Bottom is provided with the fore-stock of described front component, bottom is provided with the after-poppet of described wheel assembly, seat bar and first connecting rod and Second connecting rod, the bottom of the anterior and described push rod of described seat bar rotates and is connected, and is connected to the posterior rotation of described seat bar On described after-poppet, the one end on the top of described fore-stock, the top of described after-poppet and described first connecting rod mutually rotates Ground connects, and the other end of described first connecting rod is rotationally connected on described push rod, described push rod, described seat bar, described after Constitute the first quadric chain between frame and described first connecting rod, one end of described second connecting rod be rotationally connected to described before On support, the other end of described second connecting rod is rotationally connected on the front portion of described seat bar, described seat bar, described after-poppet, Constitute the second quadric chain between described fore-stock and described second connecting rod, when described stroller frame folds, described push away The lean forward described first connecting rod of drive, seat bar and second connecting rod of bar rotates and gradually draws close to fore-stock, and described after-poppet is present bar Drive under relatively fore-stock gradually draw close.

2. children trolley according to claim 1 it is characterised in that: the described other end of described second connecting rod, described push away The bottom of bar, the front portion of described seat bar are pivotally connected together.

3. children trolley according to claim 2 it is characterised in that: described locking mechanism is arranged at described first double leval jib At arbitrary switching in mechanism or at the either end switching of described second connecting rod.

4. children trolley according to claim 1 it is characterised in that: described fore-stock, described after-poppet and described Rotation junction between one connecting rod is provided with electric bell, and described electric bell is used for locking described after-poppet and described first connecting rod.

5. children trolley according to claim 4 it is characterised in that: described stroller frame includes collateral positioned at both sides Frame, it is connected to the cross bar between side stand described in both sides, described cross bar is provided with the unlocking knob for unlocking to described electric bell.

6. children trolley according to claim 5 it is characterised in that: the described side stand of every side all include described after Frame, described first connecting rod, described electric bell, described cross bar is fixedly attached between the described electric bell of both sides.

7. children trolley according to claim 1 it is characterised in that: described stroller frame also includes bar, described helps The two ends of hand lever are respectively fixedly connected on the described first connecting rod of both sides.

8. children trolley according to claim 1 it is characterised in that: described push rod can set along the folding of its length direction Put.

9. children trolley according to claim 1 it is characterised in that: the other end of described second connecting rod is rotationally connected to On the bottom of described push rod, constitute four between described push rod, described first connecting rod, described fore-stock and described second connecting rod even Linkage.