CN201071091Y

CN201071091Y - Folding bicycle frame of tricycle for child

Info

Publication number: CN201071091Y
Application number: CNU2007200536014U
Authority: CN
Inventors: 王春杨
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-27
Filing date: 2007-06-27
Publication date: 2008-06-11
Anticipated expiration: 2017-06-27

Abstract

The utility model relates to a foldable frame for three-wheeled baby carriage, aiming to solve the problems of the existing three-wheeled baby carriage, including large occupied space, and inconvenience for movement, transport, storage and adjustment. The main technical proposal is that the three-wheeled baby carriage comprises a main cross rod, a front wheel carrier, a rear wheel carrier, a link rod and a locking plate, wherein the front wheel carrier and the rear wheel carrier are respectively hinged on the main cross rod, the two ends of the link rod are respectively hinged with the front wheel carrier and the rear wheel carrier, one end of the locking plate is hinged on the main cross rod, the other end of the locking plate is connected with the rear wheel carrier, the locking plate is provided with a clamping gap mating with a claming nail on the main cross rod, and a return spring is disposed between the locking plate and the main cross rod for mating with the clamping.

Description

A kind of Foldable frame of toy tricycle

Technical field

The utility model belongs to the working part of child's tricycle, specifically is a kind of Foldable frame of toy tricycle.

Background technology

Toy tricycle is one of children's movable apparatus commonly used, its structure generally comprises vehicle frame and is installed in a front vehicle wheel on the vehicle frame, two rear wheels, headstock, seat support, pedal, front vehicle wheel and rear wheel difference normal-running fit are at the downside of vehicle frame front and rear portions, headstock is fixed on the anterior upside of vehicle frame, seat support is fixed on the vehicle frame top, the pedal normal-running fit is on the cranking arm of front wheel spindle, and vehicle frame rear portion upside also can be provided with and push away frame or handle.The present toy tricycle that generally uses, its vehicle frame is fixing and can not change, so toy tricycle generally can not fold, its occupation space is bigger, this gives and moves, transports and collection has brought inconvenience.The folding device of No. 200510119149.2 disclosed a kind of toy tricycle of Chinese patent, it is by making Collapsible structure with the main cross bar of vehicle frame, when needs are moved, are transported and collect, thereby main cross bar can be shortened the wheelbase that has also shortened front and back wheel, reduce taking up room of toy tricycle.But this folding device is also little to the minimizing degree that toy tricycle takes up room, and it is flexible also inconvenient to adjust main cross bar.

Summary of the invention

Take up room greatly in order to overcome existing toy tricycle, make troubles, adjust also inconvenient defective to moving, transport and collecting, the purpose of this utility model provides a kind of Foldable frame of improved toy tricycle, can be used for overcoming the defective of prior art.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of Foldable frame of toy tricycle, it is characterized in that: constitute by main cross bar, front wheel carrier, rear wheel frame, connecting rod, stay, front wheel carrier and rear wheel frame are hinged on respectively on the main cross bar, two on connecting rod is hinged with front wheel carrier and rear wheel frame respectively, one of stay is hinged on the main cross bar, the other end is connected with rear wheel frame, have on the stay one with main cross bar on the bayonet socket that cooperates do fastening of bail, be provided with the pull back spring that fastening cooperates usefulness between stay and the main cross bar.

The vehicle frame of technique scheme, its headstock, front vehicle wheel and pedal are mounted on the front wheel carrier, and rear wheel is mounted on the rear wheel frame, seat support and push away frame, handle and so on and be mounted on the main cross bar.

The beneficial effects of the utility model: because front wheel carrier and rear wheel frame are hinged on respectively on the main cross bar, two on connecting rod is hinged with front wheel carrier and rear wheel frame respectively, front wheel carrier and rear wheel frame can be close together when vehicle frame folding, main cross bar can hold up and, so taking up room of toy tricycle can greatly reduce, moved, transported and collect and improved convenience; Owing to cooperate to come the use or the folded state of fastening vehicle frame by the stay and the fastening of main cross bar, and provide fastening elastic force to stay, so the conversion of the running condition of vehicle frame and folded state is very convenient by pull back spring.

The utility model is described in further detail below in conjunction with drawings and Examples.

Description of drawings

Fig. 1 is that embodiment of the utility model is in the scheme drawing on the toy tricycle.

Fig. 2 is the enlarged diagram of the embodiment of the utility model of Fig. 1.

Fig. 3 is the scheme drawing after cuing open the handgrip on the stay on Fig. 2 and removing pull back spring.

Fig. 4 is the scheme drawing that Fig. 3 is transformed to another state.

Fig. 5 is that Fig. 1 is in the scheme drawing of holding up the state that comes after folding.

Fig. 6 is the scheme drawing that Fig. 1 is in another folded state.

Among the figure: 1, main cross bar; 2, front wheel carrier; 3, rear wheel frame; 4, connecting rod; 5, stay; 6, front wheel carrier hinge-point; 7, rear wheel frame hinge-point; 8, stay is one; 9, stay other end; 10 and 11, bail; 12, bayonet socket; 13, pull back spring; 14, handgrip; 15, hinged spindle nose; 16, headstock; 17, front vehicle wheel; 18, pedal; 19 rear wheels; 20, seat support; 21, push away frame; 22, handle.

The specific embodiment

With reference to Fig. 1～Fig. 4, the Foldable frame of this toy tricycle, it is characterized in that: constitute by main cross bar 1, front wheel carrier 2, rear wheel frame 3, connecting rod 4, stay 5, front wheel carrier 2 and rear wheel frame 3 are hinged on the main cross bar 1 by hinge-

point

6 and 7 respectively, 4 two on connecting rod is hinged with front wheel carrier 2 and rear wheel frame 3 respectively, 5 one 8 of staies are hinged on the main cross bar 1, other end 9 is connected with rear wheel frame 3, have on the stay 5 one with main cross bar 1 on the bayonet socket 12 that cooperates do fastening of

bail

10,11, be provided with the pull back spring 13 that fastening cooperates usefulness between stay 5 and the main cross bar 1.In addition, stay 5 is provided with a handgrip 14, with the convenient manual manipulation stay 5 of using; Pull back spring 13 is an extension spring, the neck that the one pull end is located on the stay 5 hinged spindle noses 15 that are fixed in main cross bar 1, its another pull end is located at handgrip 14.

In the use, as shown in Figure 1, headstock 16, front vehicle wheel 17 and pedal 18 etc. are installed on the front wheel carrier 2, and rear wheel 19 grades are installed on the rear wheel frame 3, seat support 20, push away frame 21, handle 22 is installed on the main cross bar 1.When Foldable frame is in Fig. 2, Fig. 3 state, the bayonet socket 12 of stay 5 and bail 10 cooperate do fastening, the tension effect of pull back spring 13 has improved the strong degree that fastening cooperates, and main cross bar 1 at this moment concerns the running condition that has constituted toy tricycle shown in Figure 1 with the position of front wheel carrier 2, rear wheel frame 3; When Foldable frame is desired to be in folded state, pulling handgrip 14, stay 5 overcomes the pulling force of pull back spring 13 and floats, at this moment bayonet socket 12 breaks away from bail 10, front wheel carrier 2 and rear wheel frame 3 are rotated counterclockwise to state shown in Figure 4, decontrol handgrip 14, under the tension of pull back spring 13, the bayonet socket 12 of stay 5 and bail 11 cooperate do fastening, the tension effect of pull back spring 13 has improved the strong degree that fastening cooperates, and main cross bar 1 at this moment concerns the folded state that has constituted toy tricycle shown in Figure 5 with the position of front wheel carrier 2, rear wheel frame 3; As when pushing away frame 21 and handle 22 and fold up, just become folded state shown in Figure 6.

Claims

1. the Foldable frame of a toy tricycle, it is characterized in that: constitute by main cross bar, front wheel carrier, rear wheel frame, connecting rod, stay, front wheel carrier and rear wheel frame are hinged on respectively on the main cross bar, two on connecting rod is hinged with front wheel carrier and rear wheel frame respectively, one of stay is hinged on the main cross bar, the other end is connected with rear wheel frame, have on the stay one with main cross bar on the bayonet socket that cooperates do fastening of bail, be provided with the pull back spring that fastening cooperates usefulness between stay and the main cross bar.

2. by the Foldable frame of the described toy tricycle of claim 1, it is characterized in that described stay is provided with a handgrip.

3. by the Foldable frame of claim 1 or 2 described toy tricycles, it is characterized in that described pull back spring is an extension spring, the neck that the one pull end is located on the hinged spindle nose of the stay that is fixed in main cross bar, its another pull end is located at handgrip.