CN106043402A - Child stroller - Google Patents

Abstract

The invention discloses a child stroller which comprises a stroller frame having an unfolded state and a folded state, wheel assemblies arranged at the bottom of the stroller frame and a locking mechanism used for locking the stroller frame in the unfolded state. The stroller frame only comprises a front support, a rear support, push rods, front pull rods, rear pull rods and connecting rods. The stroller frame is simple and elegant in the unfolded state. After the locking mechanism is unlocked, the push rods are turned backwards so that the front pull rods, the rear pull rods and the connecting rods can drive the front support and the rear support to be gradually folded in the front and back direction, and the stroller frame is then folded. Folding operation is quite simple and convenient, the folded structure is quite compact, and convenience is brought for daily use of a user.

Description

stroller

technical field

The invention relates to a stroller for children.

Background technique

In the prior art, there are various types of baby strollers, and the connections of the rods are also different. Correspondingly, the folding principles and folded structures of each baby stroller are also different. At present, most of the children's strollers on the market have disadvantages such as a large number of rods and a large structural size after folding. The production cost is relatively high, and daily storage and carrying are also very inconvenient.

Contents of the invention

The object of the present invention is to provide a children's stroller with a small number of rods, a simple structure, and simple and convenient folding operation.

In order to achieve the above object, the technical solution adopted by the present invention is: a children's stroller, comprising a vehicle frame in an unfolded state and a folded state, a wheel assembly arranged at the bottom of the vehicle frame, and used to lock the vehicle frame in The locking mechanism in the unfolded state, the vehicle frame includes a front bracket, a rear bracket, a push rod, a front pull rod, a rear pull rod and a connecting rod, wherein the upper part of the front bracket, the upper part of the rear bracket and the lower part of the push rod Two of the two parts are pivotally connected and a third part is pivotally connected to one of the two parts, or the three parts are pivotally connected to each other; Extending up and down, the upper end of the connecting rod is pivotally connected to the push rod, and two of the lower end of the connecting rod, the rear end of the front pull rod and the front end of the rear pull rod are pivoted. and the third party is pivotally connected to one of the aforementioned two or the three phases are pivotally connected together; the front end of the front pull rod is pivotally connected to the front bracket, and the rear The rear end of the pull rod is pivotally connected to the rear bracket.

Preferably, the front tie rod is located under the rear side of the front support, and the rear tie rod is located under the front side of the rear support. When the vehicle frame is folded, the push rod turns backward and the front support and The rear bracket is gradually folded along the front-to-back direction, and the front tie rod, the rear pull rod and the connecting rod are folded between the front bracket and the rear bracket.

Preferably, the upper part of the front bracket, the upper part of the rear bracket and the lower part of the push rod are pivotally connected together by a first shaft, and the upper end of the connecting rod is pivotally connected to the In the lower part of the push rod, the axis of the first axis and the axis of the second axis are arranged in parallel.

Preferably, the rear end of the front pull rod and the front end of the rear pull rod are respectively pivotally connected to the lower end of the connecting rod.

Preferably, the rear end of the front tie rod, the front end of the rear tie rod and the lower end of the connecting rod are pivotally connected together around the same rotating shaft.

Further, the connecting rod includes a cross bar extending in the left-right direction, and side bars respectively extending upward from both ends of the cross bar, and between the side bars on both sides and the cross bar A U-shape with an opening facing upward is formed, and the rear end of the front tie rod and the front end of the rear tie rod are respectively rotatably connected to the cross-bar part around the axis line of the cross-bar part.

Preferably, the upper part of the front bracket, the upper part of the rear bracket and the upper part of the push rod are rotatably connected together around the same axis, and the rear end of the front pull rod, the front end of the rear pull rod and the lower end of the connecting rod rotate around the same axis. The first four-bar linkage mechanism is formed between the front bracket, the front pull rod, the connecting rod and the push rod, and the second four-link mechanism is formed between the front bracket, the rear pull rod, the connecting rod and the push rod. rod mechanism.

Further, the locking mechanism includes a locking joint provided at the upper end of the front bracket, the upper end of the rear bracket and the upper end of the push rod for locking the three.

Preferably, a push handle is pivotally connected to the upper end of the push rod, and a push handle locking member for locking the two is provided between the lower end of the push handle and the upper end of the push rod.

Preferably, the wheel assembly includes a front wheel and a rear wheel, the front wheel at least includes a front wheel seat fixed at the lower end of the front bracket, and the front end of the front tie rod is pivotally connected to the front wheel seat; The rear wheel at least includes a rear wheel seat fixed at the lower end of the rear bracket, and the rear end of the rear pull rod is pivotally connected to the rear wheel seat.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: the frame of the children's stroller of the present invention only includes the front bracket, the rear bracket, the push rod, the front pull rod, the rear pull rod and the connecting rod. The frame is simple and elegant in the unfolded state. After the locking mechanism is unlocked, the push rod can be turned backwards to make the front tie rod, rear tie rod and connecting rod drive the front bracket and the rear bracket to gradually gather along the front and rear directions, thus realizing the car. The folding of the shelf is very simple and convenient, and the folded structure is also very compact, which brings convenience to the daily use of users.

Description of drawings

Accompanying drawing 1 is the perspective view of the children's stroller of the present invention in the unfolded state;

Accompanying drawing 2 is the side view of the children's stroller of the present invention in the unfolded state;

Accompanying drawing 3 is the perspective view of the children's stroller of the present invention in a half-folded state;

Accompanying drawing 4 is the side view of the children's stroller of the present invention in a half-folded state;

Accompanying drawing 5 is the perspective view of the children's stroller of the present invention in a folded state;

Accompanying drawing 6 is the side view of the stroller of the present invention in a folded state;

Among them: 1. Front support; 2. Rear support; 3. Push rod; 4. Front pull rod; 5. Rear pull rod; 6. Connecting rod; 61. Cross bar; 62. Side bar; 7. Push handle; , joint locking piece; 9, push handle locking piece; 20, front wheel; 20a, front wheel seat; 30, rear wheel; 30a, rear wheel seat.

detailed description

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

Referring to the children's stroller shown in Fig. 1 to Fig. 6, it includes a frame with unfolded state and folded state, a wheel assembly at the bottom of the frame, and a locking mechanism for locking the frame in the unfolded state.

The vehicle frame includes a front bracket 1, a rear bracket 2, a push rod 3, a front tie rod 4, a rear tie rod 5 and a connecting rod 6, the upper part of the front bracket 1, the upper part of the rear bracket 2 and the lower part of the push rod 3. Two of the parts are pivotally connected and the third part is pivotally connected to one of the aforementioned two parts, or the upper part of the front bracket 1, the upper part of the rear bracket 2 and the lower part of the push rod 3 are connected to each other. The pivots are connected together; the connecting rod 6 extends in the up and down direction, the upper part of the connecting rod 6 is pivotally connected to the push rod 3, the lower end of the connecting rod 6, the rear end of the front tie rod 4 and the front end of the rear tie rod 5 The two are pivotally connected and the third is pivotally connected to one of the aforementioned two, or the lower end of the connecting rod 6, the rear end of the front tie rod 4 and the front end of the rear tie rod 5 are pivotally connected to each other. Together, the front end of the front tie rod 4 is pivotally connected to the front bracket 1 , and the rear end of the rear tie rod 5 is pivotally connected to the rear bracket 2 .

Specifically, as shown in the accompanying drawings, the front tie rod 4 is gradually extended upwards from the front to the rear, and the front tie rod 4 is located under the rear side of the front bracket 1, and the front end of the front tie rod 4 is pivotally connected to the lower part of the front bracket 1. On; the rear tie rod 5 is gradually extended from the back to the front, the rear tie rod 5 is located at the front side of the rear bracket 2, and the rear end of the rear tie rod 5 is pivotally connected to the bottom of the rear bracket 2. In this embodiment, the wheel assembly includes a front wheel 20 and a rear wheel 30, the front wheel 20 at least includes a front wheel seat 20a fixed at the lower end of the front support 1, and the rear wheel 30 at least includes a rear wheel seat 30a fixed at the lower end of the rear support 2 , the front end of the front tie rod 4 is pivotally connected to the front wheel base 20a, and the rear end of the rear tie rod 5 is pivotally connected to the rear wheel base 30a.

In this embodiment, the upper part of the front bracket 1, the upper part of the rear bracket 2 and the lower part of the push rod 3 are pivotally connected together by a first shaft (not shown in the figure), and the upper end of the connecting rod 6 is connected by a second shaft. (not shown in the figure) The pivot is connected to the lower end of the push rod 3 , the axis lines of the first shaft and the second shaft are arranged parallel to each other, and the axis lines of the two extend non-collinearly.

The rear end of the front tie rod 4 and the front end of the rear tie rod 5 can be connected to the lower end of the connecting rod 6 respectively, or the rear end of the front tie rod 4, the front end of the rear tie rod 5 and the lower end of the connecting rod 6 can be used as in this embodiment. are pivotally connected together about the same axis of rotation. Specifically, in this embodiment, referring to FIG. 1 , the connecting rod 6 includes a cross bar portion 61 extending in the left-right direction, and side bar portions 62 extending upward from both ends of the cross bar portion 61 respectively. A U-shaped opening is formed between the rod portion 62 and the cross-bar portion 61, and the rear end of the front tie rod 4 and the front end of the rear tie rod 5 are rotatably connected to the cross-bar portion 61 around the axis line of the cross-bar portion 61 respectively. superior.

In this embodiment, the front bracket 1 includes at least the front struts located on the left and right sides, the rear bracket 2 includes at least the rear struts located on the left and right sides, and there are two front tie rods 4 and two rear tie rods 5 respectively located on the left and right sides. Side, push rod 3 also has two and is positioned at left and right sides respectively. On the same side of the vehicle frame, the upper end of the front strut, the upper end of the rear strut and the lower end of the push rod 3 are rotatably connected together around the same axis, and the upper end of the side bar portion 62 of the connecting rod 6 is wound around another axis. Rotatably connected to the side push rod 3 , the rear end of the front tie rod 4 and the front end of the rear tie rod 5 are respectively connected to the cross bar portion 61 around the axis line of the upper cross bar portion 61 of the connecting rod 6 . In this way, on the same side of the vehicle frame, the first four-bar linkage mechanism is formed between the front strut, the front pull rod 4, the connecting rod 6 and the push rod 3, and the connection between the rear strut, the rear pull rod 5, the connecting rod 6 and the push rod 3 Between constitute the second four-bar linkage.

The locking mechanism includes two groups of locking joints 8 respectively located on the left and right sides, the locking joints 8 are arranged between the upper end of the front strut, the upper end of the rear strut and the lower end of the push rod 3 for locking the three. When the locking joint 8 is locked, the first four-bar linkage mechanism and the second four-bar linkage mechanism can be locked simultaneously.

Referring to the accompanying drawings, the upper end of the push rod 3 is also pivotally connected with a push handle 6. The push handle 6 is U-shaped with the opening facing downwards. The lower end of the push handle 6 and the upper end of the push rod 3 are pivotally connected to each other, and a push handle locking member 9 for locking the two is also provided to lock the push handle 7 relative to the push rod 3 in multiple use states. . When setting, the push handle locking part 9 can be set to be unlocked in conjunction with the locking joint part 8. For example, in some embodiments, it can be set so that the push handle 7 can be turned forward when the push handle 7 is turned forward relative to the push rod 3. A structure in which the locking part 9 is unlocked synchronously with the locking joint part 8 .

Referring to Fig. 1 and Fig. 2, when the vehicle frame is locked in the unfolded state, the front bracket 1 and the push rod 3 extend upwards gradually along the same length direction from the front to the rear, and the front tie rod 4, the rear tie rod 5 and the connecting rod 6 are located at the front In the space below the bracket 1 and the rear bracket 2, a triangular structure is formed between the front bracket 1, the front tie rod 4 and the connecting rod 6, and a triangle structure is also formed between the rear bracket 2, the rear tie rod 5 and the connecting rod 6; 7 extends upward from the top of the push rod 3 and is locked by the push handle lock 9, and the relative position of the push handle 7 relative to the push rod 3 can be adjusted by operating the push handle lock 9 according to actual implementation needs. The vehicle frame has a very simple structure in the unfolded state.

When the vehicle frame needs to be folded up, as shown in Fig. 3 and Fig. 4, first turn the push handle 7 forward and move closer relative to the push rod 3, and then press down on the push rod 3 to make it reverse relative to the rear bracket 2, The lower end of the push rod 3 drives the upper end of the connecting rod 6 to move upward, so that the connecting rod 6 drives the front tie rod 4 and the rear tie rod 5 to turn over with respect to the front support 1 and the rear support 2 respectively, and drives the front support 1 and the rear support 2 to gradually move closer together along the front and rear directions. . Finally, as shown in Figure 5 and Figure 6, the front bracket 1 and the rear bracket 2 are folded together along the front and rear directions, the front tie rod 4, the rear pull rod 5 and the connecting rod 6 are folded between the front bracket 1 and the rear bracket 2, and the push rod 3 close to the rear side of the rear support 2. The folded frame structure is very compact and occupies less space.

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 children trolley, including have deployed condition and folded state vehicle frame, be located at described bottom of frame wheel assembly, For described vehicle frame is locked locking mechanism in the deployed state, it is characterised in that: described vehicle frame includes fore-stock, props up afterwards Frame, push rod, front tension bar, back stay and connecting rod, wherein, the bottom of the top of described fore-stock, the top of after-poppet and push rod this Two of which parts phase pivot in three parts connects and the 3rd parts are pivotally connected in both of the aforesaid parts one Three parts on parts or described mutually pivot together；Described connecting rod is vertically extending, described connecting rod Upper end is pivotally connected on described push rod, the front end of the lower end of described connecting rod, the rear end of described front tension bar and described back stay this Wherein both phase pivots of three connect and the third party is pivotally connected in aforementioned one in both or described three's phase Pivot together；The front end of described front tension bar is pivotally connected on described fore-stock, and the rear end pivoting of described back stay is even It is connected on described after-poppet.

Children trolley the most according to claim 1, it is characterised in that: described front tension bar is positioned under the rear side of described fore-stock Side, described back stay is positioned at below the front side of described after-poppet, during described vehicle frame folding, turns over and described fore-stock after described push rod The most gradually drawing in described after-poppet, described front tension bar, described back stay and described connecting rod draw in and prop up before described Between frame and described after-poppet.

Children trolley the most according to claim 1, it is characterised in that: the top of described fore-stock, described after-poppet upper The bottom of portion and described push rod is linked together by the first axle phase pivot, and the upper end of described connecting rod is pivotally connected by the second axle In the bottom of described push rod, described first axle is arranged with the axis parallel of described second axle.

Children trolley the most according to claim 1, it is characterised in that: before the rear end of described front tension bar, described back stay End is pivotally connected on the lower end of described connecting rod respectively.

Children trolley the most according to claim 1, it is characterised in that: before the rear end of described front tension bar, described back stay The lower end of end and described connecting rod links together around same rotating shaft phase pivot.

Children trolley the most according to claim 5, it is characterised in that: described connecting rod includes the cross bar extended in left-right direction Portion, from shape between the respective upwardly extending side lever portion, two ends in described cross bar portion, described side lever portion and the described cross bar portion of both sides Become opening up U-shaped, the rear end of described front tension bar, described back stay front end can rotating around the axial line in described cross bar portion It is connected to rotationally in described cross bar portion.

Children trolley the most according to claim 1, it is characterised in that: the top of described fore-stock, the top of after-poppet and The top of push rod connects rotatably around same axial line, under the rear end of described front tension bar, the front end of back stay and connecting rod End is pivotally connected to together around same axial line, constitutes the first double leval jib between described fore-stock, front tension bar, connecting rod and push rod Mechanism, constitutes the second quadric chain between described fore-stock, back stay, connecting rod and push rod.

Children trolley the most according to claim 7, it is characterised in that: described locking mechanism includes being located at described fore-stock The upper end of upper end, the upper end of after-poppet and push rod is for locking joint piece three locked.

Children trolley the most according to claim 1, it is characterised in that: the upper end of described push rod is the most pivotally connected handle, It is additionally provided with the handle locking piece for both being locked between lower end and the upper end of described push rod of described handle.

Children trolley the most according to claim 1, it is characterised in that: described wheel assembly includes front wheels and rear wheels, described before Wheel at least includes being fixed on the front-wheel seat of described fore-stock lower end, and the front end of described front tension bar is pivotally connected in described front-wheel seat On；Described trailing wheel at least includes the rear wheel seat being fixed on described after-poppet lower end, and the rear end of described back stay is pivotally connected in institute State on rear wheel seat.