CN107914753A - A kind of children trolley - Google Patents

Abstract

The invention discloses a kind of children trolley, it includes vehicle frame, front component, wheel assembly and locking mechanism, vehicle frame includes side stand and supporting rack, side stand includes fore-stock, after-poppet and seat bar assembly, the upper end of fore-stock and after-poppet is rotatablely connected, the front end of seat bar assembly is rotatablely connected with fore-stock, the rearward end of seat bar assembly can either be rotated with after-poppet by slide assemblies and can be slidably connected, slide assemblies can be slidably arranged on after-poppet along the length extending direction of after-poppet, the rearward end of seat bar assembly is rotatablely connected with slide assemblies, supporting rack is arranged between the after-poppet of the left and right sides, the top of the left and right sides of supporting rack is rotatablely connected with the slide assemblies of the left and right sides respectively, lower part is rotatablely connected with the after-poppet of the left and right sides respectively；The present invention is easy to operate, and rod piece quantity is few, light weight, is especially suitable for disadvantaged group's operation.

Description

a stroller for children

technical field

The invention belongs to the field of children's products, and in particular relates to a baby stroller.

Background technique

At present, the children's strollers on the market are mainly foldable strollers, which are small in size after folding, easy to carry and store, and provide a basis for their use in real life, such as public transportation, private cars, Or at home, where foldable strollers are gradually replacing or even completely replacing ordinary bulky strollers.

In the prior art, there are many structures of foldable carts. The number of rods of each cart frame is different, and the connection positions between the rods are different, so the folding principle and folding method are different, and the folding effect is also different. For example, Chinese patent CN204309869 discloses a foldable children's umbrella handle car, which includes a frame with an unfolded state and a folded state, a front wheel assembly, and a rear wheel assembly. A support frame that can be folded laterally between the side brackets on both sides, the side brackets include a front bracket with the front wheel assembly at the bottom, a rear bracket with the rear wheel assembly at the bottom, and a rear bracket extending along the front-to-back direction seat post, the front bracket, the rear bracket, and the seat post are connected to each other to form a triangular three-bar linkage mechanism, two of the three connections of the three parts are connected by rotation, and the other is connected by sliding The sliding member is slidably arranged along the length direction of one of the two connected parts, and is rotatably connected with the other of the two connected parts, and the umbrella handle cart also includes a locking mechanism for relatively locking the slider and a rod member slidably provided with the slider, an unlocking member provided on the slider for unlocking the locking mechanism, and two ends respectively connected to The folding operating part connected to the unlocking part on both sides, by operating the folding operating part, the unlocking part can be driven to unlock the locking mechanism and slide the sliding part so that the front bracket, rear bracket and seat post can be folded move closer. Embodiment 3 also discloses a foldable children's umbrella handle car, which is basically the same as Embodiment 1, the difference is that the rear end of the seat post is connected to the rear bracket through a sliding piece, and the connection between the seat post and the front bracket is The spacer, the front bracket and the rear bracket are respectively rotatably connected by pivots, and the slider can slide along the extension direction of the rear bracket, and is rotatably connected with the seat post by pivots. In this patent, although the horizontal and vertical folding of the stroller can be realized, the folding process is relatively cumbersome, and at least two parts need to be unlocked, and the horizontal and vertical folding can only be carried out separately. For disadvantaged groups, it is difficult to achieve better horizontal and vertical folding. Synchronous folding operation in longitudinal direction.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an improved stroller for children, which has a simple structure, convenient folding operation, and can simultaneously realize horizontal and vertical folding.

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

A stroller for children, comprising a vehicle frame with an expanded state and a folded state, a front wheel assembly, a rear wheel assembly and a locking mechanism for locking the vehicle frame in the expanded state, the vehicle frame includes The side bracket on the side, the support frame that is arranged between the side brackets on the left and right sides and can be folded laterally, the side bracket includes a front bracket with the front wheel assembly on the bottom, and a rear wheel assembly on the bottom The rear bracket of the assembly and the seatpost assembly extending in the front-rear direction, the front bracket is rotatably connected to the upper end of the rear bracket, and the front end of the seatpost assembly is rotatably connected to the front bracket;

Wherein, the rear end of the seatpost assembly is connected to the rear bracket through a sliding assembly that can rotate and slide, and the sliding assembly is slidably arranged on the rear bracket along the length extension direction of the rear bracket. On the bracket, the rear end of the seat post assembly is rotatably connected to the sliding assembly, the support frame is arranged between the rear brackets on the left and right sides, and the upper parts of the left and right sides of the support frame are respectively connected to the left and right sides. The sliding assemblies on both sides are rotatably connected, and the lower part is rotatably connected to the rear brackets on the left and right sides respectively.

According to some preferred aspects of the present invention, the lower parts of the front brackets on the left and right sides are rotatably connected.

According to some preferred aspects of the above solutions, the front brackets on each side include a longitudinal support section extending in the up-down direction and a transverse support section extending in the left-right direction of the trolley, one end of the transverse support section is connected to the same side The lower end of the longitudinal support section is connected, and the other end is rotationally connected with the other end of the transverse support section on the opposite side.

According to some preferred aspects of the above solution, the longitudinal support section is integrally arranged or fixedly connected with the transverse support section.

According to some preferred aspects of the above solutions, the lower ends of the front brackets on the left and right sides are rotatably connected by connecting pieces extending along the left and right directions of the stroller.

Further, the lower ends of the front brackets on the left and right sides are respectively rotatably connected to the two ends of the connecting piece.

In some specific implementations of the present invention, when the stroller is folded, the sliding assembly slides along the rear frame in a direction close to the joint between the front frame and the rear frame.

In some specific embodiments of the present invention, the support frame includes a cross brace, and the cross brace includes a first brace and a second brace, and the first brace and the second brace are in the middle The upper ends of the first strut and the second strut are respectively rotatably connected to the sliding assemblies on the left and right sides, and the lower ends are respectively rotatably connected to the rear brackets on the left and right sides.

In some specific implementations of the present invention, the upper end of the front bracket is formed with an umbrella handle-type push rod, and when the stroller is in a folded state, the push rods on the left and right sides are close together. "Close close" means that the two are close to each other in the conventional sense.

In some specific implementations of the present invention, on each side, the upper end of the front bracket and the rear bracket are rotatably connected through a first rotating shaft, and the front end of the seat post assembly is connected to the front bracket through a first rotation shaft. The two rotating shafts are rotatably connected, the rear end of the seat post assembly is rotatably connected to the sliding assembly through a third rotating shaft, the first rotating shaft, the second rotating shaft and the third rotating shaft are all parallel, and Extending along the left-right direction of the stroller, when the stroller is in an unfolded state, the first rotation axis is located above the second rotation axis and the third rotation axis.

In some specific embodiments of the present invention, the upper parts on the left and right sides of the support frame are respectively connected to the sliding assemblies on the left and right sides through the fourth rotation shaft and the fifth rotation shaft, and the lower parts are respectively connected through the sixth rotation shaft. axis, the seventh axis of rotation are rotatably connected to the rear brackets on the left and right sides, the fourth axis of rotation, the fifth axis of rotation, the sixth axis of rotation and the seventh axis of rotation are all parallel, and along the extending in the forward and backward direction.

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

The folding of the children's stroller of the present invention is very simple, and can realize the synchronous folding of the whole vehicle in the horizontal and vertical directions, and the number of structural members of the whole vehicle is very small, which greatly reduces the weight of the whole vehicle, and at the same time, the whole vehicle after folding The frame not only takes up very little space, but also the push rods are close together, which is convenient for hanging or squeezing in a small space; in addition, there is no need to set up a strut assembly between the front and rear brackets of the cart structure of the present invention. To achieve better stability, there will be no automatic folding in the unfolded state.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative efforts.

Fig. 1 is the overall structure schematic diagram of children's stroller of the present invention;

Fig. 2 is a schematic side view of the children's stroller of the present invention;

Fig. 3 is an embodiment of the lower connection of the front brackets on the left and right sides of the children's stroller of the present invention;

Fig. 4 is a schematic side view of the half-folded state of the children's stroller of the present invention;

5 is a schematic diagram of the overall structure of the half-folded state of the children's stroller of the present invention;

Fig. 6 is a schematic side view of the folded state of the children's stroller of the present invention;

7 is a schematic diagram of the overall structure of the folded state of the children's stroller of the present invention;

Among them, 10, vehicle frame; 11, side bracket; 111, front bracket; 1111, push rod; 112, rear bracket; 113, seatpost assembly; Strut; 20, front wheel assembly; 30, rear wheel assembly; 40, sliding assembly; 50, connector; a, first rotating shaft; b, second rotating shaft; c, third rotating shaft; d, fourth Rotation axis; e, fifth rotation axis; f, sixth rotation axis; g, seventh rotation axis; h, eighth rotation axis; i, ninth rotation axis.

Detailed ways

The above solutions will be further described below in conjunction with specific embodiments and accompanying drawings; it should be understood that these embodiments are used to illustrate the basic principles, main features and advantages of the present invention, and the present invention is not limited by the scope of the following embodiments. The front, back, left, right, up and down mentioned in the present invention are all with reference to the stroller.

As shown in Figures 1-7, the present embodiment provides a stroller for children, including a vehicle frame 10 in an unfolded state and a folded state, a front wheel assembly 20, a rear wheel assembly 30, and a mechanism for locking the vehicle frame 10 in the unfolded state. the locking mechanism.

The vehicle frame 10 includes side brackets 11 located on the left and right sides of the stroller, and a support frame arranged between the side brackets 11 on the left and right sides and which can be folded laterally.

The side bracket 11 includes a front bracket 111 with a front wheel assembly 20 at the bottom, a rear bracket 112 with a rear wheel assembly 30 at the bottom, and a seatpost assembly 113 extending in the front-to-back direction. The front bracket 111 is rotatably connected to the upper end of the rear bracket 112 , the front end of the seatpost assembly 113 is rotatably connected to the front bracket 111, and the rear end of the seatpost assembly 113 is connected to the rear bracket 112 through the sliding assembly 40 so as to be able to rotate and slide; The length extension direction of the seat post assembly 113 can be slidably arranged on the rear bracket 112, the rear end of the seat post assembly 113 is connected to the sliding assembly 40 in rotation, the support frame is arranged between the rear bracket 112 on the left and right sides, and the left and right sides of the support frame The upper part is rotatably connected with the sliding assembly 40 on the left and right sides, the lower part is rotatably connected with the rear brackets 112 on the left and right sides, and the lower part of the front bracket 111 on the left and right sides is rotatably connected. When the stroller is folded, the sliding assembly 40 slides along the rear frame 112 in a direction close to the joint between the front frame 111 and the rear frame 112 .

Specifically, in each test, the upper end of the front bracket 111 and the rear bracket 112 are rotatably connected through the first rotation axis a, the front end of the seatpost assembly 113 is rotatably connected with the front bracket 111 through the second rotation axis b, and the seatpost The rear end of the assembly 113 is rotatably connected to the sliding assembly 40 through the third rotation axis c, the first rotation axis a, the second rotation axis b and the third rotation axis c are all parallel and extend along the left and right directions of the stroller. When the stroller is in the unfolded state, the first rotation axis a is located above the second rotation axis b and the third rotation axis c; when the stroller is in the folded state, the The third rotation axis c is located between the first rotation axis a and the second rotation axis b.

Specifically, the front bracket 111 on each side includes a longitudinal support section (not shown) extending along the up-down direction and a transverse support section (not shown) extending along the left-right direction of the trolley, one end of the transverse support section is the same as The lower end of the longitudinal support section on one side is connected, and the other end is rotatably connected to the other end of the transverse support section on the opposite side. In this example, the longitudinal support section and the transverse support section are integrally arranged or fixedly connected, both are acceptable.

Specifically, the support frame includes a cross brace 12, and the cross brace 12 includes a first brace 121 and a second brace 122, and the first brace 121 and the second brace 122 are rotatably connected in the middle, and the first brace 121 The upper end of the second strut 122 is rotatably connected to the sliding assemblies 40 on the left and right sides through the fourth rotation axis d and the fifth rotation axis e respectively, and the lower end is connected to the sliding assembly 40 on the left and right sides through the sixth rotation axis f and the seventh rotation axis g respectively. The rear brackets 112 on the left and right sides are rotatably connected. The fourth rotation axis d, the fifth rotation axis e, the sixth rotation axis f and the seventh rotation axis g are all parallel and extend along the front-rear direction of the stroller.

In this example, an umbrella-shaped push rod 1111 is formed on the upper end of the front bracket 111 , and when the stroller is in a folded state, the push rods 1111 on the left and right sides are close together.

The locking mechanism is a commonly used locking structure and setting method in the prior art. For example, it can be set on the rear bracket 112 for locking the sliding assembly 40, so as to achieve the purpose of fixing the vehicle frame, or it can be set on the front bracket 111 for fixing. The front bracket 111 and the seat post assembly 113, etc., will not be described in detail here.

When it is necessary to fold the stroller, unlock the entire vehicle frame 10 by unlocking the locking mechanism, and then drive the sliding assembly 40 to slide toward the junction of the front bracket 111 and the rear bracket 112 along the length extension direction of the rear bracket 112. At this time, the seatpost The component 113 can drive the front bracket 111 and the rear bracket 112 to move closer to each other, and at the same time, because the upper ends of the first strut 121 and the second strut 122 of the cross brace 12 are rotatably connected with the sliding components 40 on the left and right sides, The lower ends are all rotatably connected to the rear bracket 112, and then when the sliding assembly 40 slides toward the joint between the front bracket 111 and the rear bracket 112 along the length extension direction of the rear bracket 112, the rear brackets 112 on both sides are driven close to each other, so , when the entire baby stroller is folded, it realizes horizontal and vertical simultaneous folding, and it is easy and convenient to fold, which is extremely suitable for the operation of vulnerable groups.

In other embodiments, the lower ends of the left and right front brackets 111 are rotatably connected by connecting pieces 50 extending along the left and right directions of the stroller.

As shown in FIG. 3 , in other embodiments, the lower ends of the left and right front brackets 111 are respectively rotatably connected to the two ends of the connecting piece 50 extending along the left and right directions of the stroller. As shown in the figure, the left and right front brackets 111 are rotatably connected to the two ends of the connecting member 50 through the eighth rotation axis h and the ninth rotation axis i respectively.

In some other embodiments, the connection between the front bracket 111 and the rear bracket 112, and the connection between the front bracket 111 and the seat post assembly 113 can be specifically set as a universal joint connection, so that the front bracket 111 can be realized 1. The relative rotation of the rear bracket 112 in different planes when it is folded.

To sum up, the folding of the children's stroller of the present invention is very simple, and the simultaneous folding of the entire vehicle in the horizontal and vertical directions can be realized, and the number of structural rods of the entire vehicle is extremely small, which greatly reduces the weight of the entire vehicle, and at the same time The entire vehicle frame not only occupies very little space, but also the push rods 1111 are tightly closed together, which is convenient for hanging or squeezing in a small space; in addition, there is no need to set up additional supports between the front and rear brackets of the cart structure of the present invention. The rod assembly can also achieve better stability, and there will be no automatic folding in the unfolded state.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention. Equivalent changes or modifications made in the spirit shall fall within the protection scope of the present invention.

Claims (10)

1. a kind of children trolley, including the vehicle frame with unfolded state and folded state, front component, wheel assembly and it is used for The vehicle frame is locked in the locking mechanism of unfolded state, the vehicle frame includes the side stand at left and right sides of cart, setting Between the side stand of the left and right sides and can horizontal folding supporting rack, the side stand is equipped with the front-wheel including bottom The seat bar assembly that the fore-stock of component, bottom are equipped with the after-poppet of the wheel assembly and extend along the longitudinal direction, before described The upper end of stent and the after-poppet is rotatablely connected, and front end and the fore-stock of the seat bar assembly are rotatablely connected, its It is characterized in that：The rearward end of the seat bar assembly can either be rotated with the after-poppet by slide assemblies and can slidably connected Connect, the slide assemblies can be slidably arranged on the after-poppet along the length extending direction of the after-poppet, described Rearward end and the slide assemblies of seat bar assembly are rotatablely connected, support frame as described above be arranged on the left and right sides the after-poppet it Between, the top of the left and right sides of support frame as described above is rotatablely connected with the slide assemblies of the left and right sides respectively, lower part respectively with The after-poppet rotation connection of the left and right sides.

2. children trolley according to claim 1, it is characterised in that：The lower part of the fore-stock of the left and right sides rotates Connection.

3. children trolley according to claim 2, it is characterised in that：The fore-stock of each side is included along the vertical direction The longitudinal bracing section of extension and along cart left and right directions extend cross-brace section, the one end of the cross-brace section with The lower end connection of the longitudinal bracing section of homonymy, the other end of the cross-brace section of the other end and opposite side rotate Connection, the longitudinal bracing section are wholely set or are fixedly connected with cross-brace section.

4. children trolley according to claim 2, it is characterised in that：The bottom of the fore-stock of the left and right sides passes through The connector extended along the left and right directions of cart rotates connection.

5. children trolley according to claim 4, it is characterised in that：The bottom difference of the fore-stock of the left and right sides Rotate and be connected with the both ends of the connector.

6. children trolley according to claim 1, it is characterised in that：When the children trolley folds, the slide assemblies Slided along the after-poppet towards close to the direction of the fore-stock with the after-poppet junction.

7. children trolley according to claim 1, it is characterised in that：Support frame as described above includes cross support, the cross Support includes the first strut and the second strut, and first strut and second strut rotate connection at middle part, and described The upper end of one strut and second strut rotates with the slide assemblies of the left and right sides be connected respectively, bottom difference Rotate and be connected with the after-poppet of the left and right sides.

8. children trolley according to claim 1, it is characterised in that：The upper end of the fore-stock is pushed away formed with handle of umbrella type Bar, when the children trolley is in folded state, the push rod close proximity of the left and right sides.

9. children trolley according to claim 1, it is characterised in that：In each survey, the fore-stock and the after-poppet Upper end is rotated connection by the first rotation axis, and front end and the fore-stock of the seat bar assembly pass through the second rotation axis Rotate connection, and the rearward end of the seat bar assembly is rotated with the slide assemblies by the 3rd rotation axis to be connected, and described One rotation axis, the second rotation axis and the 3rd rotation axis are parallel, and extend along the left and right directions of the children trolley, when described When children trolley is in unfolded state, first rotation axis is located at the upper of second rotation axis and the 3rd rotation axis Side.

10. children trolley according to claim 1, it is characterised in that：The top difference of the left and right sides of support frame as described above Rotated connection by the 4th rotation axis, the 5th rotation axis and the slide assemblies of the left and right sides, lower part passes through the 6th respectively The after-poppet of rotation axis, the 7th rotation axis and the left and right sides rotates connection, the 4th rotation axis, the 5th rotation axis, 6th rotation axis and the 7th rotation axis are parallel, and extend along the anteroposterior direction of the children trolley.