A kind of frame for baby cart being easy to folding storage
Technical field
The present invention relates to a kind of perambulator, be specifically related to a kind of frame for baby cart.This frame for baby cart is easy to folding storage.
Background technology
Perambulator, also known as children trolley, have a lot of kinds according to the difference of function, but generally all include vehicle frame and seat two parts.Wherein, the bottom of vehicle frame is provided with wheel, it is simple to the moving and turning to of perambulator;The top of vehicle frame can need to make different structure designs according to the function of perambulator, such as pouch can be set in the vehicle frame base under seat, it is easy to storing, or adjusts on the interface of seat and vehicle frame, with the children's seat facilitating vehicle frame to be mounted directly in automobile ....
For the ease of carrying and storing, manufacturer devises a kind of folding perambulator, and the vehicle frame of this perambulator can fold, and after folding, its volume is substantially reduced, and efficiently solves the problem taken up room.But, existing folding stand finds in use, although vehicle frame can fold, facilitate storage, but the distance between its front and back wheel of the vehicle frame after Zhe Dieing is constant, therefore volume is the biggest, when putting into the less part in the spaces such as automobile trunk, the problem that can occur to put into, therefore can not meet the requirements at the higher level of user.
Therefore, how to solve the problem that above-mentioned prior art exists, become as present invention problem to be studied.
Summary of the invention
The present invention provides a kind of frame for baby cart being easy to folding storage, and after its object is to solve prior art storage, volume remains unchanged bigger, it is impossible to the problem meeting user's requirements at the higher level.
For reaching above-mentioned purpose, the technical solution used in the present invention is: a kind of frame for baby cart being easy to folding storage, including push rod, fore-stock, after-poppet, subbase, front wheel carrier and rear wheel frame;Wherein, described push rod has two and be arranged in parallel, and the upper end of two push rods is provided with leader;The upper end of described fore-stock is rotationally connected with the lower end of described push rod, forms the first pin joint;The upper end of described after-poppet is also rotationally connected with the lower end of described push rod, forms the second pin joint, and described second pin joint is positioned at the rear of the first pin joint;The front end of described subbase is connected with described front wheel carrier, and the bottom of this front wheel carrier is provided with a pair front-wheel;The lower end of described fore-stock is rotationally connected with the front portion of described subbase, forms the 3rd pin joint;The lower end of described after-poppet is rotationally connected with the rear portion of described subbase, forms the 4th pin joint;Described rear wheel frame is rotationally connected with at the 4th pin joint described in the rear portion of described subbase, and the bottom of this rear wheel frame is also provided with pair of rear wheels;
The bottom of described fore-stock is provided with one first connector at described 3rd pin joint, and one end of this first connector is fixedly arranged on described fore-stock, and to link with described fore-stock, the other end is then rotationally connected a connecting rod;Being provided with one second connector at described 4th pin joint on described rear wheel frame, one end of this second connector is fixedly arranged on described rear wheel frame, and to link with described rear wheel frame, the other end is rotationally connected described connecting rod;The setting of first, second connector whereby, when vehicle frame folding, described push rod rotates clockwise with the first pin joint for center of rotation, and described fore-stock rotates counterclockwise with the 3rd pin joint for center of rotation, and described after-poppet rotates counterclockwise with the 4th pin joint for center of rotation;Now, described first connector rotates counterclockwise with fore-stock linkage, and described second connector is rotated clockwise by described first connector driving via the traction of described connecting rod, and described in linkage, rear wheel frame rotates clockwise;
Among described first, second, third and fourth pin joint, any one is provided with locking device.
Relevant content in technique scheme is explained as follows:
1., in such scheme, described first, second, third and fourth pin joint constitutes a four-bar linkage structure, and therefore when either of which rotates, other threes will link, and when either of which is locked, other threes the most all can not rotate.
2. in such scheme, described rear wheel frame rotates clockwise, and to be drawn in forward by trailing wheel, thus shortens the distance between front and back wheel, significantly reduces the vehicle frame volume after folding.
3. in such scheme, the U-shaped seat pocket stay tube frame that described fore-stock is made up of the two seat pocket stay tubes be arrangeding in parallel or is formed in one;The U-shaped folding stay tube frame that described after-poppet is made up of the two folding stay tubes be arrangeding in parallel or is formed in one.
4., in such scheme, described push rod is scalable or folding.Designing whereby, described handle will be able to press close to main body of vehicle frame further, and then significantly reduce the longitudinal length of folding rear carriage, and then reduce the vehicle frame volume after folding.
5., in such scheme, described locking device is located at described first pin joint.
6., in such scheme, described locking device includes Drawing switch, stay cord, spring, lock gear, fore-stock top connection and push rod lower contact;Described Drawing switch is slideably positioned on described push rod;Described fore-stock top connection is fixedly arranged on the upper end of described fore-stock, and described push rod lower contact is fixedly arranged on the lower end of described push rod;Described stay cord is located at inside described push rod, and one end of stay cord is connected with described Drawing switch, and the other end of stay cord is connected with described lock gear;Described lock gear is located in the chamber formed after being spliced and combined by described fore-stock top connection and described push rod lower contact, and be equipped with and the locating slot of described lock gear form fit on the described fore-stock top connection face relative with described push rod lower contact, described chamber is formed by two locating slot relative combinations;Described spring is located between described push rod lower contact and described lock gear, with when described lock gear is drawn by stay cord, described lock gear can be completely in the locating slot of push rod lower contact and compress described spring, the most described lock gear is completely disengaged with described fore-stock top connection, and then unlock described push rod and fore-stock, i.e. unlock described first pin joint;And when pull strength disappears, described lock gear is then pushed out to the state simultaneously coordinated with locating slot in described fore-stock top connection and push rod lower contact by described spring, to reach the locking to both, and then lock described fore-stock and push rod, i.e. lock described first pin joint.
7. in such scheme, the body of rod of described connecting rod is the lower section that bending is set around described rear wheel frame, and when vehicle frame fully opens, described connecting rod is fitted with described rear wheel frame.Curved design whereby, described connecting rod will not hinder the rotation of rear wheel frame, and is aided with the design of laminating, then can improve the structural strength that vehicle frame is overall after vehicle frame is opened, and then improve the stability used.
Operation principle and the advantage of the present invention are as follows:
A kind of frame for baby cart being easy to folding storage of the present invention, including push rod, fore-stock, after-poppet, subbase, front wheel carrier and rear wheel frame.Wherein, upper end with fore-stock and after-poppet respectively, the lower end of push rod is rotationally connected formation first, second pin joint, and the second pin joint is positioned at the rear of the first pin joint;The lower end of fore-stock is rotationally connected with the front end of subbase and forms the 3rd pin joint, and the lower end of after-poppet is rotationally connected with the rear end of subbase and forms the 4th pin joint, and rear wheel frame is hinged with subbase at the 4th pin joint.By arranging the first connector in the lower end of fore-stock, rear wheel frame arranges the second connector, between two connectors, is connected with a connecting rod, so that during the folding forward of described fore-stock, rear wheel frame also synchronizes folding forward.Compared to existing technologies, the volume after the present invention folds is less, storage of being more convenient for, and has simple in construction, reliability and durability advantage.
Accompanying drawing explanation
Accompanying drawing 1 is axonometric chart during embodiment of the present invention open mode;
Accompanying drawing 2 is the side schematic view of Fig. 1;
Accompanying drawing 3 folds the axonometric chart during (opening) for the embodiment of the present invention;
Accompanying drawing 4 is the side schematic view of Fig. 3;
Accompanying drawing 5 is axonometric chart during embodiment of the present invention folded state;
Accompanying drawing 6 is the side schematic view of Fig. 5;
Accompanying drawing 7 is rear side visual angle axonometric chart during embodiment of the present invention open mode;
Accompanying drawing 8 is the decomposition explosion figure of embodiment of the present invention locking device;
Accompanying drawing 9 is in the generalized section of released state for embodiment of the present invention locking device;
The generalized section that accompanying drawing 10 is in the lock state for embodiment of the present invention locking device;
Accompanying drawing 11 is the schematic diagram after the further folding of embodiment of the present invention push rod.
In the figures above: 1. push rod;2. fore-stock;3. after-poppet;4. subbase;5. front wheel carrier;6. rear wheel frame;7. handle;8. the first pin joint;9. the second pin joint;10. front-wheel;11. the 3rd pin joints;12. the 4th pin joints;13. trailing wheels;14. first connectors;15. connecting rods;16. second connectors;17. Drawing switches;18. springs;19. lock gear;20. fore-stock top connections;21. push rod lower contacts;22. chambers;23. locating slots.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the invention will be further described:
Embodiment: see shown in accompanying drawing 1~10, a kind of frame for baby cart being easy to folding storage, including push rod 1, fore-stock 2, after-poppet 3, subbase 4, front wheel carrier 5 and rear wheel frame 6;Wherein, described push rod 1 has two and be arranged in parallel, and the upper end of two push rods 1 is provided with leader 7;The upper end of described fore-stock 2 is rotationally connected with the lower end of described push rod 1, forms the first pin joint 8;The upper end of described after-poppet 3 is also rotationally connected with the lower end of described push rod 1, forms the second pin joint 9, and described second pin joint 9 is positioned at the rear of the first pin joint 8;The front end of described subbase 4 is connected with described front wheel carrier 5, and the bottom of this front wheel carrier 5 is provided with a pair front-wheel 10;The lower end of described fore-stock 2 is rotationally connected with the front portion of described subbase 4, forms the 3rd pin joint 11;The lower end of described after-poppet 3 is rotationally connected with the rear portion of described subbase 4, forms the 4th pin joint 12;Described rear wheel frame 6 is rotationally connected with at the 4th pin joint 12 described in the rear portion of described subbase 4, and the bottom of this rear wheel frame 6 is also provided with pair of rear wheels 13;
The bottom of described fore-stock 2 is provided with one first connector 14 at described 3rd pin joint 11, and one end of this first connector 14 is fixedly arranged on described fore-stock 2, and to link with described fore-stock 2, the other end is then rotationally connected a connecting rod 15;Being provided with one second connector 16 at described 4th pin joint 12 on described rear wheel frame 6, one end of this second connector 16 is fixedly arranged on described rear wheel frame 6, and to link with described rear wheel frame 6, the other end is rotationally connected described connecting rod 15;The setting of first, second connector 14,16 whereby, when vehicle frame folding, described push rod 1 rotates clockwise with the first pin joint 8 for center of rotation, described fore-stock 2 rotates counterclockwise with the 3rd pin joint 11 for center of rotation, and described after-poppet 3 rotates counterclockwise with the 4th pin joint 12 for center of rotation;Now, described first connector 14 rotates counterclockwise with fore-stock 2 linkage, described second connector 16 is rotated clockwise by described first connector 14 driving via the traction of described connecting rod 15, described in linkage, rear wheel frame 6 rotates clockwise, so that trailing wheel 13 is drawn in forward, thus shorten the distance between front and back wheel 10,13, significantly reduce the vehicle frame volume after folding.
Wherein, described first, second, third and fourth pin joint 8,9,11,12 constitutes a four-bar linkage structure, and therefore when either of which rotates, other threes will link, and when either of which is locked, other threes the most all can not rotate.As shown in figs. 8-10, described locking device is located at described first pin joint 8.Described locking device includes Drawing switch 17, stay cord (not drawing in figure), spring 18, lock gear 19, fore-stock top connection 20 and push rod lower contact 21;Described Drawing switch 17 is slideably positioned on described push rod 1;Described fore-stock top connection 20 is fixedly arranged on the upper end of described fore-stock 2, and described push rod lower contact 21 is fixedly arranged on the lower end of described push rod 1;It is internal that described push rod 1 is located at by described stay cord, and one end of stay cord is connected with described Drawing switch 17, and the other end of stay cord is connected with described lock gear 19;Described lock gear 19 is located in the chamber 22 formed after being spliced and combined by described fore-stock top connection 20 and described push rod lower contact 21, and be equipped with and the locating slot 23 of described lock gear 19 form fit on described fore-stock top connection 20 face relative with described push rod lower contact 21, described chamber 22 is formed by two locating slot 23 relative combinations;Described spring 18 is located between described push rod lower contact 21 and described lock gear 19, with when described lock gear 19 is drawn by stay cord, lock gear 19 can be completely in the locating slot 23 of push rod lower contact 21 and compress described spring 18, the most described lock gear 19 is completely disengaged with described fore-stock top connection 20, and then unlock described push rod 1 and fore-stock 2, i.e. unlock described first pin joint 8;And when pull strength disappears, described lock gear 19 is then pushed out to the state simultaneously coordinated with locating slot 23 in described fore-stock top connection 20 and push rod lower contact 21 by described spring 18, to reach the locking to both, and then lock described fore-stock 2 and push rod 1, i.e. lock described first pin joint 8.
Wherein, the U-shaped seat pocket stay tube frame that described fore-stock 2 is formed in one;The U-shaped that described after-poppet 3 is formed in one folds stay tube frame.
Wherein, as shown in figure 11, described push rod 1 is scalable or folding.Designing whereby, described handle 7 will be able to press close to main body of vehicle frame further, and then significantly reduce the longitudinal length of folding rear carriage, and then reduce the vehicle frame volume after folding.
Wherein, the body of rod of described connecting rod 15 is the lower section that bending is set around described rear wheel frame 6, and when vehicle frame fully opens, described connecting rod 15 is fitted with described rear wheel frame 6.Curved design whereby, described connecting rod 15 will not hinder the rotation of rear wheel frame 6, and is aided with the design of laminating, then can improve the structural strength that vehicle frame is overall after vehicle frame is opened, and then improve the stability used.
A kind of frame for baby cart being easy to folding storage of the present invention, including push rod, fore-stock, after-poppet, subbase, front wheel carrier and rear wheel frame.Wherein, upper end with fore-stock and after-poppet respectively, the lower end of push rod is rotationally connected formation first, second pin joint, and the second pin joint is positioned at the rear of the first pin joint;The lower end of fore-stock is rotationally connected with the front end of subbase and forms the 3rd pin joint, and the lower end of after-poppet is rotationally connected with the rear end of subbase and forms the 4th pin joint, and rear wheel frame is hinged with subbase at the 4th pin joint.By arranging the first connector in the lower end of fore-stock, rear wheel frame arranges the second connector, between two connectors, is connected with a connecting rod, so that during the folding forward of described fore-stock, rear wheel frame also synchronizes folding forward.Compared to existing technologies, the volume after the present invention folds is less, storage of being more convenient for, and has simple in construction, reliability and durability advantage.
Above-described embodiment only for technology design and the feature of the present invention are described, its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this.All equivalence changes made according to spirit of the invention or modification, all should contain within protection scope of the present invention.