CN201424047Y

CN201424047Y - Retracting device for children handcart

Info

Publication number: CN201424047Y
Application number: CN2009201210213U
Authority: CN
Inventors: 徐银昌
Original assignee: GROUP OF NINGBO SHENGMA CO Ltd
Current assignee: GROUP OF NINGBO SHENGMA CO Ltd
Priority date: 2009-05-27
Filing date: 2009-05-27
Publication date: 2010-03-17
Anticipated expiration: 2019-05-27

Abstract

The utility model relates to a retracting device for children handcarts. The utility model adopts the scheme that a handhold pipe are pivotally connected with a push handle pipe through a joint, the joint comprises an upper joint seat and a lower joint seat; the lower joint seat forms a guide surface, and a buckling groove is formed on the guide surface; a lock pin is glidingly matched on the guide surface, and can slide along the guide surface and is buckled in the buckling groove; a pair of elongated chutes are formed on the pipe wall at the lower end of the handhold pipe, a driving seat isfixedly arranged inside the lower end of the handhold pipe, and forms a through hole for the movement of the lock pin; a rotary L-shaped drive block is built in the driving seat, the end part on one side of the L-shaped drive block is fixedly connected with the lower end of a pulling cable, an elongated slot is formed on the other side of the L-shaped drive block, and one end of the L-shaped driveblock is connected with an elastic element; the lock pin is glidingly arranged in the L-shaped drive block elongated slot, two end parts of the lock pin are arranged in the elongated chutes of the handhold pipe after penetrating through the driving seat, and the lock pin can slide along the elongated slot and the elongated chutes. The retracting device for children handcarts provided by the utility model has the advantages of simple structure, high firmness, simple and convenient operation, etc.

Description

The folding mechanism of children trolley

Technical field

The utility model belongs to children trolley manufacturing technology field, particularly a kind of folding mechanism of children trolley.

Background technology

The folding mechanism structure of traditional children go-cart is as follows: handle pipe is connected and fixed on the joint of handle pipe upper end by rivet.Push the control setup that returns the vehicle to the garage and knock off, by trailing cable pulling locking bolt, itself and joint are thrown off, the upset handle pipe can be finished the folding of children trolley; Unclamp the button that returns the vehicle to the garage and knock off, under the effect of retracing spring, locking bolt resets.Traditional folding mechanism since handle pipe and handle pipe be not on the same axis, thereby influenced the firmness of burst.

Summary of the invention

The utility model discloses a kind of folding mechanism of children trolley, its have simple for structure, firmness is high, advantage such as easy and simple to handle.

The technical solution of the utility model is as follows: the folding mechanism of children trolley, comprise handle pipe, handle pipe and place the interior trailing cable of handle pipe, articulate by a joint between handle pipe and handle pipe, the joint comprises the seat of honour, joint of being fixed in the handle pipe lower end, be fixed in following of the joint of handle pipe upper end, following the pivot joint in the seat of honour, joint and joint; Following of joint forms spigot surface, has engagement groove on the spigot surface; The sliding lock pin of joining on the spigot surface, lock pin can and snap in the engagement groove along the spigot surface slip; The lower end tube wall of handle pipe is offered a pair of oblique elongated slot, the inside, lower end of handle pipe sets firmly a drive seat, drive seat forms can be for the through hole of lock pin movement, insert rotary type L type drive block in the drive seat, the end, one side of L type drive block and the lower end of trailing cable are affixed, the another side of L type drive block is offered an elongated slot, and an end of L type drive block links to each other with elastic component; Place the elongated slot of L type drive block, the both ends of lock pin are passed in the oblique elongated slot that drive seat is placed on handle pipe the lock pin sliding type, and lock pin can slide along elongated slot and oblique elongated slot.

The folding mechanism of described children trolley, elastic component are extension springs, and the two ends of extension spring are connected to an end and the drive seat of L type drive block.

The folding mechanism of described children trolley, the turning point of L type drive block is rotationally connected with drive seat by rotating shaft.

The folding mechanism of described children trolley, the lock pin middle part forms an annular groove, and annular groove is sticked in the elongated slot of L type drive block; A hole, this hole and lock pin free-running fit that elongated slot one end of L type drive block is communicated with.

That the folding mechanism of children trolley of the present utility model has is simple for structure, firmness is high, advantage such as easy and simple to handle.

Description of drawings

Fig. 1 is the STRUCTURE DECOMPOSITION figure of the utility model folding mechanism.

Fig. 2 is the sectional structure chart that the utility model folding mechanism is untied state.

Fig. 3 is the A portion enlarged drawing of Fig. 2.

Fig. 4 is the sectional structure chart of the utility model folding mechanism lock-out state.

Fig. 5 is the B portion enlarged drawing of Fig. 4.

Fig. 6 is the sectional structure chart of a certain state of the utility model folding mechanism folding process.

Fig. 7 is the C portion enlarged drawing of Fig. 6.

In the diagram, 1-handle pipe, the oblique elongated slot of 101-, the seat of honour, 2-joint, following of 3-joint, 301-engagement groove, 302-spigot surface, 4-handle pipe, 5-drive seat, 6-L type drive block, 601-elongated slot, 602-hole, 7-lock pin, 701-annular groove, 8-extension spring, 9-trailing cable.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is elaborated.

Shown in Fig. 1-7, the top of handle pipe 1 is provided with the control setup that returns the vehicle to the garage and knock off, handle pipe 1 built-in trailing cable 9, and the upper end of trailing cable 9 links to each other with the control setup that returns the vehicle to the garage and knock off, and upwards spurs trailing cable 9 and the locking of releasing folding mechanism by the control setup that returns the vehicle to the garage and knock off.

The lower end tube wall of handle pipe 1 is offered corresponding a pair of oblique elongated slot 101, and the seat of honour, joint 2 is installed in the lower end external stability of handle pipe 1.

The upper end external stability of handle pipe 4 is installed the joint following 3, and the top that the joint is following 3 and the bottom at the seat of honour, joint 2 articulate.Following 3 in joint forms spigot surface 302, has engagement groove 301 on the spigot surface 302; The sliding lock pin 7 of joining on the spigot surface 302, lock pin 7 can along spigot surface 302 slide and stopper in engagement groove 301.

The inside, lower end of handle pipe 1 sets firmly a drive seat 5, and drive seat 5 forms the oblique elongated slot 101 corresponding through holes with handle pipe 1, and this through hole can be for lock pin movement.Form a spatial accommodation in the drive seat 5, insert L type drive block 6 in the spatial accommodation, the turning point of L type drive block 6 is rotatedly connected by rotating shaft and drive seat 5.The end, one side of L type drive block 6 and the lower end of trailing cable 9 are affixed, offer the hole 602 that an elongated slot 601 reaches on the another side of L type drive block 6, and hole 602 is communicated with an end of elongated slot 601.L type drive block 6 one ends connect an end of extension spring 8, and the other end of extension spring 8 is hung on the drive seat 5.

The middle part of lock pin 7 forms an annular groove 701, and lock pin 7 can pass hole 602, is convenient to assembling.After lock pin 7 passes hole 602, annular groove 701 is fastened in the elongated slot 601 of L type drive block 6, the both ends of lock pin 7 place the oblique elongated slot 101 of handle pipe 1 bottom, and lock pin 7 can slide along elongated slot 601 and oblique elongated slot 101.

Shown in Fig. 4,5, folding mechanism is in the lock state, and at this moment, under the effect of extension spring 7, lock pin 7 is inserted in the

engagement groove

301, and 3 at the seat of honour, joint 2 and the seat of honour, joint can't be rotated.

When unlocking, operate the control setup that returns the vehicle to the garage and knock off, upwards spur trailing cable 9, drive seat 5 is rotated along axle, the rotation of drive seat 5 makes the lock pin 7 of clamping in the elongated slot 601 shift out engagement groove 301, referring to Fig. 2,3, at this moment, following 3 in the seat of honour, joint 2 and joint can be rotated, referring to Fig. 6,7, fold in the folding process, the spigot surface 302 that lock pin 7 is following 3 along the joint slides until disengaging.Then, lock pin 7 returns back to elongated slot 601 bottom under the effect of extension spring 8.

During the folding mechanism lock operation, backward rotation handle pipe 1 and handle pipe 4 are when going to certain, the spigot surface 302 that lock pin 7 sliding upper joints are following 3, and be rotated further, insert in the engagement groove 301 until lock pin 7, the seat of honour, joint 2 and following 3 in joint can not be rotated, thereby locked folding mechanism.

Claims

1, the folding mechanism of children trolley, comprise handle pipe, handle pipe and place the interior trailing cable of handle pipe, articulate by a joint between handle pipe and handle pipe, it is characterized in that: described joint comprises the seat of honour, joint of being fixed in the handle pipe lower end, be fixed in following of the joint of handle pipe upper end, following the pivot joint in the seat of honour, joint and joint;

Following of joint forms spigot surface, has engagement groove on the spigot surface; The sliding lock pin of joining on the spigot surface, lock pin can and snap in the engagement groove along the spigot surface slip;

The lower end tube wall of handle pipe is offered a pair of oblique elongated slot, the inside, lower end of handle pipe sets firmly a drive seat, drive seat forms can be for the through hole of lock pin movement, insert rotary type L type drive block in the drive seat, the end, one side of L type drive block and the lower end of trailing cable are affixed, the another side of L type drive block is offered an elongated slot, and an end of L type drive block links to each other with elastic component;

Place the elongated slot of L type drive block, the both ends of lock pin are passed in the oblique elongated slot that drive seat is placed on handle pipe the lock pin sliding type, and lock pin can slide along elongated slot and oblique elongated slot.

2, the folding mechanism of children trolley according to claim 1 is characterized in that: described elastic component is extension spring, and the two ends of extension spring are connected to an end and the drive seat of L type drive block.

3, the folding mechanism of children trolley according to claim 1 and 2 is characterized in that: the turning point of described L type drive block is rotationally connected with drive seat by rotating shaft.

4, the folding mechanism of children trolley according to claim 1 is characterized in that: described lock pin middle part forms an annular groove, and annular groove is sticked in the elongated slot of L type drive block; A hole, this hole and lock pin free-running fit that elongated slot one end of L type drive block is communicated with.