CN103909959B - A kind of three-wheel children trolley - Google Patents

Abstract

The invention discloses a three-wheeled stroller for children, which comprises a vehicle frame with an unfolded position and a folded position, a front wheel assembly, and a rear wheel assembly, wherein the vehicle frame includes two side brackets respectively located on both sides, connected on the two sides The connection assembly between the brackets, the side brackets on each side include a front bracket, a push rod whose lower part is rotatably connected to the upper part of the front bracket, a rear bracket whose upper part is rotatably connected to the push rod, and a front bracket connected to the rear bracket The seatpost between them is rotatably connected to the lower parts of the front brackets on both sides, and the connecting assembly includes a rear brace assembly arranged at the rear of the vehicle frame and a bottom brace assembly arranged at the bottom of the vehicle frame. The cart has a simple structure and can be folded or unfolded conveniently. When the frame is folded, the front bracket, push rod, rear bracket, seat post and connecting components can all be closely connected together, so that the folded frame has a compact structure. , which occupies less space and is convenient for storage or transportation.

Description

A three-wheeled stroller for children

technical field

The invention relates to a three-wheel stroller for children.

Background technique

In the prior art, the frame of the three-wheeled stroller has an unfolded position and a folded position. When the frame is folded, it can only be folded along the left-right direction and the front-rear direction of the frame. The folded frame is relatively large. The structure is not compact enough, which affects the storage and transportation of the vehicle frame.

Contents of the invention

The object of the present invention is to provide a three-wheel stroller for children that can be folded conveniently and has a compact structure after being folded.

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

A three-wheeled children's stroller, comprising a vehicle frame with an unfolded position and a folded position, a front wheel assembly, and a rear wheel assembly, the vehicle frame includes two side brackets respectively located on both sides, connected to the two side brackets The connecting assembly between, the side brackets on each side include a front bracket, a push rod whose lower part is rotatably connected to the upper part of the front bracket, a rear bracket whose upper part is rotatably connected to the push rod, and a front part The seatpost is rotatably connected to the front bracket and the rear part is rotatably connected to the rear bracket. The lower parts of the front brackets on both sides are rotatably connected through the first rotating shaft. The rear strut assembly at the rear of the vehicle frame, the bottom strut assembly arranged at the bottom of the vehicle frame, the rear strut assembly can be unfolded or folded along the left and right directions of the vehicle frame and connected to the rear Between the brackets, the bottom strut assembly can be unfolded or folded along the front and rear directions of the vehicle frame and is connected between the lower part of the rear bracket on both sides and the lower part of the front bracket on at least one side.

Preferably, the bottom brace assembly includes a first bottom brace and a second bottom brace that intersect each other and are hinged at the intersection, a first connecting rod whose rear part is rotatably connected to the front part of the first bottom brace, a second link whose rear part is rotatably connected to the front part of the second bottom brace, and a front part of the first link which is rotatably connected to the front part of the second link and is rotatably connected to the On the front part of the vehicle frame, the rear part of the first bottom brace is rotatably connected to the rear bracket on one side, and the rear part of the second bottom brace is rotatably connected to the rear bracket on the other side. on the rear bracket.

Further preferably, the front part of the first connecting rod and the front part of the second connecting rod are rotatably connected through a second rotating shaft, and the second rotating shaft is rotatably connected to the front of the front bracket on one side. Partially or rotatably connected to the first rotating shaft.

Further preferably, the front wheel assembly is installed on the bottom front part of one side of the front bracket or on the first rotating shaft.

Further preferably, the front wheel assembly is mounted on one of the first connecting rod, the second connecting rod, and the second rotating shaft.

Preferably, the front brackets on both sides are arc-shaped rods whose front parts are bent toward the middle of the vehicle frame along the left-right direction of the vehicle frame.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: the three-wheeled children's stroller of the present invention has a simple structure and can be folded or unfolded conveniently. The rod, rear bracket, seat post and connection components can all be closely moved together, so that the folded frame has a compact structure, occupies less space, and is convenient for storage or transportation.

Description of drawings

Attached picture 1 It is a perspective view of the three-wheeled stroller of the present invention when it is in an unfolded position;

Attached picture 2 It is a side view of the three-wheel stroller of the present invention when it is in the unfolded position;

Attached picture 3 It is a side view of the three-wheel stroller of the present invention when it is in a folded position;

in: 1 , side bracket; 11 , front bracket; 12 , putter; 13 , rear support; 14 , seat post; 15 , the first rotating shaft; 2 , Rear strut assembly; 3 , Bottom brace assembly; 31 , the first strut; 32 , the second strut; 33 , the first connecting rod; 34 , the second connecting rod; 35 , the second shaft; 4 , front wheel; 5 ,rear wheel.

detailed description

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

The following definitions of directions are all defined according to the front-back, left-right, and up-down directions observed by the user when the three-wheeled stroller is in use. 1 The left-right direction in the figure, the front-back direction is the figure 2 The left and right directions in the middle, where the left is the front, the right is the back, and the up and down direction is the figure 1 ,picture 2 in the up and down direction.

see picture 1 ~ 3 The shown three-wheeled stroller includes a vehicle frame with an unfolded position and a folded position, and a front wheel assembly located at the bottom front of the vehicle frame 4 , the rear wheel assembly located at the rear of the bottom of the frame 5 . The frame includes two side brackets on the left and right 1 , connected to the two side brackets 1 connection between components.

see picture 1 ,picture 2 shown, side brackets on each side 1 Both include front bracket 11 , putter 12 , rear bracket 13 , seat post 14 , putter 12 lower part and front bracket 11 The upper phase of the swivel connection, the rear bracket 13 The upper part is pivotally connected to the push rod 12 the upper part. seat post 14 Attached to the front bracket 11 and rear bracket 13 Between, the front and rear ends are respectively connected to the front bracket 11 , rear bracket 13 superior. Side brackets on both sides 1 front bracket on 11 Both are arc-shaped rods whose front part bends toward the middle of the frame along the left and right directions of the frame, and the two front brackets 11 The front of the 15 Phase rotation connection, when the frame is folded, the front brackets on both sides 11 around the first axis 15 move closer.

The linkage assembly consists of a rear strut assembly located at the rear of the frame 2 , The bottom brace assembly located at the bottom of the frame 3 , rear strut assembly 2 Attached to both side brackets 1 rear bracket 13 Between them, it can be unfolded or folded along the left and right directions of the vehicle frame. bottom strut assembly 3 Includes first bottom stay 31 , second bottom strut 32 , the first connecting rod 33 , the second connecting rod 34 , the first bottom strut 31 with second bottom stay 32 They are arranged to cross each other and are rotatably connected by pin shafts at the intersections. The first bottom brace 31 The rear part is pivotally attached to the rear bracket on one side of the 13 lower part of the upper, second bottom strut 32 The rear part is pivotally connected to the other side of the rear bracket 13 On the lower part, the first link 33 The rear is hinged on the first bottom stay 31 front of the second link 34 The rear is hinged on the second bottom stay 32 front of the first link 33 front and second link 34 The front of the 35 are rotatably connected and rotatably connected to the front of the vehicle frame. When connected, the second shaft 35 pivotally attached to one of the side brackets 1 front bracket 11 on the lower part of the front end, or put the second shaft 35 with the first reel 15 Swivel connection. Of course, the first link can also be 33 with the second link 34 The front of the is connected to the front of the frame through an adapter.

front wheel assembly 4 Can be installed on either side of the front bracket 11 on the bottom front of the or mounted on the first shaft 15 on, can also be installed on the first link 33 , the second connecting rod 34 , the second shaft 35 On one of the components, the two rear wheel assemblies 5 installed on both sides of the rear bracket 13 bottom of.

see picture 1 to figure 3 , when the stroller needs to be folded, flip the push bar forward 12 , putter 12 around it with the front bracket 11 The transfer point rotates and makes the front bracket 11 flip back, rear bracket 13 with the putter 12 Flip forward, continue to flip putter forward 12 , on the seatpost 14 Under the action of the front bracket 11 The front portion of the bottom strut assembly is pushed forward and the 3 first bottom strut 31 , second bottom strut 32 Turn around the transition point between the two and gather in the middle so that the first link at the front 33 , the second connecting rod 34 stow and move forward, rear strut assembly 2 At the same time, fold along the left and right directions of the frame until the front bracket 11 , putter 12 , rear bracket 13 , seat post 14 close to each other, and finally form the 3 structure shown.

To unfold the stroller from the folded position, pull the push lever straight up 12 and flip back so that the front bracket 11 Lift up gradually, the rear bracket 13 also with the putter 12 Flip back while bottom strut assembly 3 first bottom strut 31 and second bottom stay 32 Spread out to the sides so that the bottom strut assembly 3 Folding in the fore-aft direction, the rear strut assembly 2 Then expand along the left and right directions of the vehicle frame at the same time until the vehicle frame is fully expanded. The cart is more convenient to fold and unfold, has a more compact structure after folding, occupies less space, and is convenient for storage and transportation.

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 (5)

1. a three-wheel children trolley, including the vehicle frame with expanded position and folding position, front component (4), wheel assembly (5), described vehicle frame includes two side stands (1) laying respectively at both sides, it is connected to the connection assembly between two described side stands (1), it is characterized in that: the described side stand (1) of every side all includes fore-stock (11), bottom rotates with the top of described fore-stock (11) push rod (12) being connected, top is rotatably connected to the after-poppet (13) on described push rod (12), front portion is connected to that described fore-stock (11) is upper and rear portion rotates with described after-poppet (13) the rotationally seat bar (14) being connected, the bottom of the described fore-stock (11) of both sides is rotated connection by the first rotating shaft (15),

nullDescribed connection assembly includes the rear pole assembly (2) being located at described vehicle frame rear portion、It is located at the bottom supporting rod assembly (3) of described bottom of frame，Described rear pole assembly (2) can be launched along the left and right directions of described vehicle frame or be connected to foldedly between the described after-poppet (13) of both sides，Described bottom supporting rod assembly (3) can launch or be connected to foldedly described after-poppet (13) bottom of both sides and at least between fore-stock (11) bottom described in side along direction before and after described vehicle frame，Described bottom supporting rod assembly (3) includes intersecting and at hinged the first bottom supporting rod (31) of infall and the second bottom supporting rod (32)、The first connecting rod (33) that rear portion is connected with the anterior phase pivot of the first bottom supporting rod (31)、The second connecting rod (34) that rear portion is connected with the anterior phase pivot of described second bottom supporting rod (32)，The anterior phase pivot of the anterior and described second connecting rod (34) of described first connecting rod (33) is connected and is rotatably connected on the front portion of described vehicle frame，It is connected on the described after-poppet (13) of side to the posterior rotation of described first bottom supporting rod (31)，It is connected on the described after-poppet (13) of opposite side to the posterior rotation of described second bottom supporting rod (32).

Three-wheel children trolley the most according to claim 1, it is characterized in that: the front portion of the second connecting rod (34) anterior, described of described first connecting rod (33) is rotated connection by the second rotating shaft (35), described second rotating shaft (35) is rotatably connected on the front portion of fore-stock (11) described in wherein side or is rotatably connected on described first rotating shaft (15).

Three-wheel children trolley the most according to claim 1 and 2, it is characterised in that: on the front portion, the end of fore-stock (11) described in described front component (4) side installed therein or in described first rotating shaft (15).

Three-wheel children trolley the most according to claim 2, it is characterised in that: described front component (4) is arranged on parts in described first connecting rod (33), described second connecting rod (34), described second rotating shaft (35).

Three-wheel children trolley the most according to claim 1, it is characterised in that: the described fore-stock (11) of both sides is the anterior bow bent along the left and right directions of described vehicle frame to described central frame beam.