CN101804839A

CN101804839A - Semi-automatic folding moped

Info

Publication number: CN101804839A
Application number: CN 201010146235
Authority: CN
Inventors: 钱东高
Original assignee: WUXI SOUTHEAST VEHICLE TECHNOLOGY Co Ltd
Current assignee: WUXI SOUTHEAST VEHICLE TECHNOLOGY Co Ltd
Priority date: 2010-04-14
Filing date: 2010-04-14
Publication date: 2010-08-18
Anticipated expiration: 2030-04-14
Also published as: CN101804839B

Abstract

The invention provides a semi-automatic folding moped, which can be automatically folded and spread, and is labor-saving, fast, convenient and safe in use. The semi-automatic folding moped comprises a frame, a front wheel, a back wheel, a saddle and an electric control system, wherein the frame comprises a front fork, a front vertical pipe, a handle, a back flat fork, a front connecting seat and a main bearing seat; the two ends of an upper connecting rod and the two ends of a lower connecting rod are rotatablely connected between the front connecting seat and the main bearing seat to form into a four-connecting rod structure; and the lower connecting rod is connected with the back flat fork though a pull rod. The semi-automatic folding moped is characterized in that an extension pipe structure supports a supporting pipe; the semi-automatic folding moped is further provided with a thrust mechanism of the supporting pipe; the electric control system comprises a three-phase DC brushless motor, a microcontroller and a first switch; when the frame is positioned in a folding status and needs to be opened, the first switch transmits a signal to the microcontroller to control the three-phase DC brushless motor to drive the back wheel to be backward turned till that the frame is spread; and when the frame is positioned in a spreading status and needs to be driven, a speed-adjusting handle controls the back wheel to be turned through the microcontroller to drive the moped to run.

Description

A kind of semi-automatic folding moped

(1) technical field

The present invention relates to the morpet technical field, be specially a kind of semi-automatic folding moped.

(2) background technology

Existing folding bicycle, it comprises vehicle frame, assembly, front-wheel, the trailing wheel with expansion and folder function, the electric-control system that is arranged on the saddle on the vehicle frame and drives front-wheel or trailing wheel.For the ease of carrying, reduce storage space, existing folding bicycle, its vehicle frame adopts one or more foldable structure, realizes folder function, but folding or to launch be to pull pine or fastening by manual operation, relatively require great effort, especially in summer, the user generally wears the footwear that reveal toe, folding car is opened and need be cooperated with pin, and just very inconvenience overexerts and can hinder utmost point toe, safety is bad, firmly kick the beam, be difficult for again opening, use effort, also inconvenience.

(3) summary of the invention

At above-mentioned technological deficiency, the invention provides a kind of semi-automatic folding electric morpet, it can realize auto-folder and expansion, uses laborsaving, fast, convenient and safe.

Its technical scheme is such:

The electric-control system that it comprises vehicle frame, front-wheel, trailing wheel with expanded position and folding position, is arranged on the saddle of described vehicle frame and is used to drive described front-wheel or trailing wheel rotates; Described vehicle frame comprises front fork, preceding standpipe, handlebar, back chain stay, described front fork be rotatably connected preceding Connection Block, the back chain stay primary load bearing seat that has been rotatably connected, be rotationally connected between the equal and described preceding Connection Block in the two ends of boxed rod and lower link two ends, the primary load bearing seat, constitute four-bar linkage structure; Described saddle is installed on described primary load bearing seat by flexible pipe structure, described lower link afterwards is connected with pull bar between the chain stay with described, between described lower link and the described pull bar for being rotatably connected, between described pull bar and the described back chain stay for being rotatably connected, it is characterized in that: described flexible pipe structure is supported in support tube, between be rotatably connected; It also is provided with the thrust mechanism of support tube; The bonded assembly pull bar is scalable power-assisted pull bar between described lower link and the described back chain stay; Described electric-control system comprises three-phase direct-current brushless motor, microcontroller, first switch, described three-phase direct-current brushless motor is installed on trailing wheel, described first switch is installed on vehicle frame, when vehicle frame was in folded state and need opens, first switch passed to the reversing of microprocessor control three-phase direct-current brushless motor-driven trailing wheel spacing with signal; When vehicle frame is in deployed condition and need travels, speed-regulating handle bar by the microprocessor control trailing wheel forward the rotating drive car travel.

It is further characterized in that:

Described electric-control system also comprises power driving circuit, current sampling circuit, and speed-regulating handle bar speed-regulating signal circuit is connected with the input I/O mouth of microcontroller with counter-rotating energizing signal circuit; Three road PWM output of microcontroller is through power driving circuit rear drive machine operation; The working current of current sampling circuit sampling motor also inputs to the analogue to digital conversion interface ADC of microcontroller; Motor rotor position detection signal (A phase, B phase and C are mutually) inputs to the input I/O mouth of microcontroller respectively;

The thrust mechanism of described support tube comprises handle, described handle is installed on described primary load bearing seat, the side-lower of described handle is provided with second switch, the bottom of described handle contacts with second switch in rotation, described second switch and thruster electricly connect, support tube is positioned at the maximum stroke that promotes of push rod of thruster, and the lower end of support tube is supported in the back chain stay, and the maximum position that promotes in the stroke of the push rod that is in thruster in the back chain stay is provided with and can holds the through hole that support tube slides up and down;

The thrust mechanism of described support tube comprises handle, described handle is installed on described primary load bearing seat, the position of controlling of described handle is provided with second switch, described second switch and thruster electricly connect, support tube is positioned at the maximum stroke that promotes of push rod of thruster, the lower end of support tube is supported in the back chain stay, and the maximum position that promotes in the stroke of the push rod that is in thruster in the back chain stay is provided with and can holds the through hole that support tube slides up and down;

Described flexible pipe structure comprises middle stay tube, and described middle stay tube is through sleeve pipe, and described sleeve pipe is fixedly installed in described primary load bearing seat, can locate coaxial slip between described middle stay tube and the described sleeve pipe;

In the described four-bar linkage structure, the leading section of described boxed rod rearward end and described lower link is connected with the damping push rod structure, described damping push rod structure comprises pipe box, bar, parts in described pipe box, the bar are connected with the rear end of upper connecting rod, another parts in described pipe box, the bar are connected with the front end of lower connecting rod, and the free end of described bar stretches into pipe box and overlaps its outer cover of back that is connected as a single entity with described pipe box spring is housed;

Described scalable power-assisted pull bar comprises two profiled members, wherein profiled member one an end end and described back chain stay are rotationally connected, the one end end of another root profiled member and the rear end of lower connecting rod are rotationally connected, the other end of described two profiled members be respectively arranged with strip hole, between be connected as a single entity by bearing pin;

The outer cover of described saddle pipe is equipped with first lining, be provided with aluminum pipe in the stay tube in described, saddle pipe and exterior first lining thereof, an end stretch into the interior aluminum pipe of described middle stay tube and locate coaxial slip between the described saddle pipe and first lining and the described aluminum pipe by first shackle member;

Below described first shackle member, described middle stay tube is provided with second shackle member, and the outer end of described second shackle member is rotatably connected to strut member and amounts to the locking locating part, and described strut member and described support tube are rotatably connected;

Described first switch is a travel switch, and described first switch is installed on the upper end of described sleeve pipe, and with described second shackle member repressive contact when car is folding;

The inwall of described sleeve pipe is provided with lining, and the jacket wall of described lining is set in steel wire, and in the outside of described steel wire, the jacket wall of described lining is provided with the slip raised line vertically, and this slip raised line cooperates with the chute that the outer wall of middle stay tube is provided with.

After the present invention adopted said structure, the power-assist that can realize battery-driven car that is provided with of thrust mechanism of supporting tube folded, fast, conveniently; And the setting of described electric-control system, when launching transition, reverse by controller controlling and driving motor spacing from folding for vehicle frame, thereby realize car from folding to launching quick transition, laborsaving, quick and easy, so just need not launch by foot's strength, safe and reliable, quick and easy; And lining and steel wire that the inwall of sleeve pipe is provided with have guaranteed the straightness accuracy between middle stay tube and the sleeve pipe, and be wear-resisting, also prevented the rotation of middle stay tube simultaneously, further guaranteed the safety of car; And the damping push rod structure that is provided with in the scalable power-assisted pull bar, four connecting leg structures can play the effect of major-minor damping on the one hand, on the other hand, can play the effect of fastening vehicle frame at motoring condition, prevent from enforcement further to have guaranteed the safety of car because of accident causes the folding naturally of car.

(4) description of drawings

Fig. 1 is in the structural representation of deployed condition for the present invention;

Fig. 2 is in the structural representation of folded state for the present invention;

Fig. 3 is the structural relation figure of Fig. 1 middle sleeve and middle stay tube;

Fig. 4 is saddle pipe and support tubular construction graph of a relation;

Fig. 5 is the structural relation figure that the part-structure of four-bar linkage structure among Fig. 1 amplifies;

Fig. 6 is the block diagram of electric-control system;

The structural representation that Fig. 7 overlooks for flexible power-assisted pull bar among Fig. 1.

(5) specific embodiment

See Fig. 1, the present invention includes vehicle frame, front-wheel 1, trailing wheel 18, be arranged on the saddle 25 of vehicle frame and be used to drive front-wheel 1 or electric-control system that trailing wheel 18 rotates with expanded position and folding position; Vehicle frame comprises front fork 2, preceding standpipe 4, handlebar 5, back chain stay 17, front fork 2 be rotatably connected preceding Connection Block 3, the back chain stay 17 primary load bearing seat 20 that has been rotatably connected, be rotationally connected between the equal and preceding Connection Block 3 in the two ends of boxed rod 6 and lower link 7 two ends, the primary load bearing seat 20, constitute four-bar linkage structure; The leading section of boxed rod 6 rearward end and lower link 7 is connected with the damping push rod structure, see Fig. 5, the damping push rod structure comprises pipe box 24, bar 23, parts in pipe box 24, the bar 23 are connected with the rear end of upper connecting rod 6, another parts in pipe box 24, the bar 23 are connected with the front end of lower connecting rod 7, among Fig. 1, Fig. 5, pipe box 24 is connected with the rear end of upper connecting rod 6, bar 23 is connected with the front end of lower connecting rod 7, the free end fit overlap joint of pipe box 24, bar 23 is connected as a single entity, pipe box 24 is in the outside of bar 23 among the figure, and the outer cover of pipe box 24, bar 23 is equipped with spring 30.

See that Fig. 1, Fig. 3 saddle 25 are installed on primary load bearing seat 20 by flexible pipe structure, flexible pipe structure is supported in support tube 14, between be rotatably connected; Flexible pipe structure comprises middle stay tube 12, and middle stay tube 12 is through sleeve pipe 26, and sleeve pipe 26 is fixedly installed in primary load bearing seat 20, can coaxially slide between middle stay tube 12 and the sleeve pipe 26.Improvements of the present invention are: the inwall of sleeve pipe 26 is provided with lining 27, the jacket wall of lining 27 is set in steel wire 28, in the outside of steel wire 28, the jacket wall of lining 27 is provided with the slip raised line vertically, and this slip raised line cooperates with the chute that the outer wall of middle stay tube 12 is provided with.Like this, coaxial slip between stay tube 12 and the lining 27 in guaranteeing on the one hand, guaranteed can not rotate between middle stay tube 12 and the sleeve pipe 26, lining 27 is wear-resisting, but lacks hardness, use steel wire 28, can play a supporting role on the one hand, its straightness accuracy is good on the other hand, and is wear-resisting, the bottom of support tube 14 can enter the 12b of spacing hole (see figure 2) smoothly when the while had also made things convenient for the through hole of back, support tube 14 edge chain stay 17 to slide, and the 12b of spacing hole is arranged on the locating part 12a.

See Fig. 1, Fig. 4, the outer cover of saddle pipe 10 is equipped with first lining 34, be provided with aluminum pipe 29 in the middle stay tube 12, saddle pipe 10 and exterior first lining 34 thereof, aluminum pipe 29 during one end stretches in the stay tube 12 also passes through first shackle member, 11 location, and coaxial slip between saddle pipe 10 and first lining 34 and the aluminum pipe 29 is in the said structure, the rigidity and the support strength of vehicle frame have been strengthened in the setting of the aluminum pipe 29 and first lining 34 greatly.

See Fig. 1, below first shackle member 11, middle stay tube 12 is provided with second shackle member 13, the outer end of second shackle member 13 is rotatably connected to strut member 13-1 and locating part 13-2, strut member 13-1 and support tube 14 are rotatably connected, when this sample car folded, support tube 14 can be done the rotation of appropriateness along strut member 13-1.

See Fig. 7, lower link 7 is connected with flexible power-assisted pull bar 22 between the chain stay 17 with the back, flexible power-assisted pull bar 22 comprises profiled

member

31,32, profiled member 32 1 end ends are rotationally connected with back chain stay 17, the rear end of profiled member 31 1 end ends and lower connecting rod 7 is rotationally connected, the other end of profiled

member

31,32 is respectively arranged with strip hole, and its free end is superimposed with each other and is connected as a single entity by bearing pin 33.The improvements at this place are that flexible power-assisted pull bar 22 total lengths can be with car motion adjusting, this sample car is expert at and is made under the state, because what the injustice of road caused jolts, vehicle frame has some trace and receives or put, vehicle frame in changing like this can absorb some energy, thereby can alleviate the vibration amplitude of car, thereby give by bike personnel with buffer action.When vehicle frame was in deployed condition, the bumper and absorbing shock bar in flexible power-assisted pull bar 22 and the four-bar linkage structure was in the pretension state, has the function of self-locking simultaneously, prevented that unexpected factor from causing the car under the enforcement state folding suddenly, strengthened the safety of car.Folding and spread apart for the ease of vehicle frame, in the four-bar linkage structure, the place of being rotationally connected of boxed rod 6 and preceding Connection Block 3 is positioned at the be rotationally connected top at place of lower link 7 and preceding Connection Block 3, and the place of being rotationally connected of boxed rod 6 and primary load bearing seat 20 is positioned at the top that lower link 7 and primary load bearing seat 20 are rotationally connected and locate; The place ahead that chain stay 17 and primary load bearing seat 20 were rotationally connected and locate after the place of being rotationally connected of lower link 7 and primary load bearing seat 20 was positioned at, the place of being rotationally connected of primary load bearing seat 20 and lower link 7 is positioned at the be rotationally connected top at place of lower link 7 and flexible power-assisted pull bar 22, the place of being rotationally connected of flexible power-assisted pull bar 22 and back chain stay 17 be positioned at primary load bearing seat 20 with after the chain stay top that is rotationally connected and locates.

The present invention also is provided with the thrust mechanism of support tube 14; The thrust mechanism of support tube 14 comprises handle 8, handle 8 is installed on primary load bearing seat 20, the side-lower of handle 8 is provided with second switch 9, the bottom of handle 8 contacts with second switch 9 in rotation, second switch 9 and thruster 15 electricly connect, support tube 14 is positioned at the maximum stroke that promotes of push rod of thruster 15, and the lower end of support tube 14 is supported in back chain stay 17, and the maximum position that promotes in the stroke of the push rod that is in thruster 15 of back chain stay 17 is provided with and can holds the through hole that support tube 14 slides up and down; This is the embodiment 1 of thrust mechanism (among Fig. 1, Fig. 2, through hole is covered by primary load bearing seat 20).

The another kind of structure of the thrust mechanism of support tube 14 is exactly that the position of controlling of handle 8 is provided with second switch 9 and (does not express among Fig. 1, mention handle 8 like this, can realize action to second switch 9), second switch 9 and thruster 15 electricly connect, and be identical among other structures and the embodiment 1.

Among the present invention, electric-control system comprises three-phase direct-current brushless motor 35, microcontroller 19, first switch 21, power driving circuit 36, current sampling circuit 37, three-phase direct-current brushless motor 35 is installed on trailing wheel 18, first switch 21 is a travel switch, first switch 21 is installed on the upper end of sleeve pipe 26, and with second shackle member 13 repressive contact when car is folding, the speed governing hall signal circuit and the energizing signal circuit that reverses are connected with the input I/O mouth of microcontroller 19; Three road PWM output of microcontroller is through power driving circuit rear drive machine operation; The working current of current sampling circuit sampling motor also inputs to the analogue to digital conversion interface ADC of microcontroller; Motor rotor position detection signal (A phase, B phase and C are mutually) inputs to the input I/O mouth of microcontroller respectively.After vehicle frame is in deployed condition, speed-regulating handle bar by microcontroller 19 control trailing wheels 18 rotating drive cars travel speed-regulating handle bar and microcontroller 19 between annexation, the genus prior art.

Below in conjunction with accompanying drawing folding and expansion process of the present invention is described: when vehicle frame by deployed condition when rugosity is changed, angle of inclination handle 8 power that are subjected to carrying, (handle 8 is installed on primary load bearing seat 20 by the return torsion spring to overcome the application force of return torsion spring, inclination certain angle during installation, in order that the second switch 9 of control sidepiece, if second switch 9 is installed on the position of controlling of handle 8, then normal mounting just can), utilize the stressed principle of single-point fixed vertical, handle 8 is whole around the attachment point rotation, the punching press shape face of 8 lower end side of shaking hands can be oppressed the second switch 9 that is fitted on the primary load bearing seat 20 and be touched slide bar, make its conducting, give thruster 15 working signals that are arranged on the chain stay 17 of back, the parallel release of thruster 15 inner core push rod fast speedes, withstand strut bar 14, force strut bar 14 and back chain stay 17 acting point to break away from, when handle 8 stressed transmissions are perpendicular to the ground, strut bar 14 has broken away from back chain stay 17, stay tube 12 is along the parallel obliquely downslide of the sleeve pipe 26 of primary load bearing seat 20 in the companion, last strut bar 14 stretches into the 12b of spacing hole and realizes folding vehicle frame, meanwhile, whole vehicle frame, with shake hands 8 with primary load bearing seat 20 places of being rotationally connected be fulcrum, boxed rod in the four-bar linkage structure, lower link respectively with preceding Connection Block 3, rotate between the primary load bearing seat 20, pipe box 24 in the decoupling rod, the free end of bar 23 progressively separates, decoupling rod length overall lengthening, boxed rod, vertical distance dwindles until two bars almost to press close between the lower link, front fork 2, preceding standpipe 4, handlebar 5 and front-wheel 1 lean on to trailing wheel; And flexible power-assisted pull bar 22 is under the lower link 7 that rotates promotes, profiled

member

31,32 further superimposed until bearing pin 33 block can not move till, like this, under the continuation of lower link 7 promotes, chain stay 17 after profiled member 32 jack-up of flexible power-assisted pull bar 22, back chain stay 17 is rotated along clockwise direction along the place of being rotationally connected of back chain stay 17 with primary load bearing seat 20, trailing wheel 18 is close to front-wheel, withstand the lower surface (see figure 2) of the leading section of back chain stay 17 until locating part 13-2, thereby realized the folding and locking of vehicle frame; When needs launch, carried saddle 25, saddle pipe is up together with second shackle member 13, locating part 13-2 throws off with the lower surface of the leading section of back chain stay 17, second shackle member 13 and first switch 21 are also thrown off, first switch 21 passes to microcontroller 19 control three-phase direct-current brushless motors 35 with signal and drives the reversing of trailing wheels 18 spacings, external force a little, and vehicle frame launches; The counter-rotating energizing signal that first switch provides, order about microcontroller and drive the counter-rotating of three-phase direct-current brushless motor, stop action after reaching fixed range, the realization S. A. launches, when the vehicle frame position is in deployed condition, the push rod of thruster 15 is in the contracted rest state, and the lower end of strut bar 14 is against on the chain stay 17 of back, and bumper and absorbing shock push rod 10 and flexible power-assisted pull bar 22 are under the pretension state.Among the present invention, thruster belongs to the market existing procucts.Front end described in the present invention, rear end be exactly with headstock as object of reference, headstock one side is that front end, the tailstock are the rear end.

In whole folding and expansion process, the work of whole electric-control system is as follows:

Step 1: when electric motor bicycle with folding launched, conducting first switch 21 (accompanying drawing) provided the counter-rotating energizing signal.

Step 2: microcontroller determines the counter-rotating energizing signal when effective, changes the phase sequence of output PWM, makes motor backward rotation (cw), stops after rotating a circle; At this moment, car is by folding to the deployed condition transition;

Step 3: controller returns to the positive revolving die formula (conter clockwise) of acquiescence.

Step 4: in the motor Umklapp process, judge the motor working current that sampling comes, carry out motor rotation blockage judgement and over current of motor and judge, microcontroller is carried out real-time rotation-clogging protection and overcurrent protection.

Claims

1. electric-control system semi-automatic folding moped, that it comprises vehicle frame, front-wheel, trailing wheel with expanded position and folding position, is arranged on the saddle of described vehicle frame and is used to drive described front-wheel or trailing wheel rotates; Described vehicle frame comprises front fork, preceding standpipe, handlebar, back chain stay, described front fork be rotatably connected preceding Connection Block, the back chain stay primary load bearing seat that has been rotatably connected, be rotationally connected between the equal and described preceding Connection Block in the two ends of boxed rod and lower link two ends, the primary load bearing seat, constitute four-bar linkage structure; Described saddle is installed on described primary load bearing seat by flexible pipe structure, described lower link afterwards is connected with pull bar between the chain stay with described, between described lower link and the described pull bar for being rotatably connected, between described pull bar and the described back chain stay for being rotatably connected, it is characterized in that: described flexible pipe structure is supported in support tube, between be rotatably connected; It also is provided with the thrust mechanism of support tube; The bonded assembly pull bar is scalable power-assisted pull bar between described lower link and the described back chain stay; Described electric-control system comprises three-phase direct-current brushless motor, microcontroller, first switch, described three-phase direct-current brushless motor is installed on trailing wheel, described first switch is installed on vehicle frame, when vehicle frame was in folded state and need opens, first switch passed to the reversing of microprocessor control three-phase direct-current brushless motor-driven trailing wheel spacing with signal; When vehicle frame is in deployed condition and need travels, speed-regulating handle bar by the microprocessor control trailing wheel forward rotating drive garage make.

2. according to claim 1 a kind of semi-automatic folding moped, it is characterized in that: described electric-control system also comprises power driving circuit, current sampling circuit, and speed-regulating handle bar hall signal circuit is connected with the input I/O mouth of microcontroller with counter-rotating energizing signal circuit; Three road PWM output of microcontroller is through power driving circuit rear drive machine operation; The working current of current sampling circuit sampling motor also inputs to the analogue to digital conversion interface ADC of microcontroller; The motor rotor position detection signal inputs to the input I/O mouth of microcontroller respectively.

3. according to claim 2 a kind of semi-automatic folding moped, it is characterized in that: the thrust mechanism of described support tube comprises handle, described handle is installed on described primary load bearing seat, the side-lower of described handle is provided with second switch, the bottom of described handle contacts with second switch in rotation, described second switch and thruster electricly connect, support tube is positioned at the maximum stroke that promotes of push rod of thruster, the lower end of support tube is supported in the back chain stay, and the maximum position that promotes in the stroke of push rod that is in thruster in the back chain stay is provided with and can holds the through hole that support tube slides up and down.

4. according to claim 2 a kind of semi-automatic folding moped, it is characterized in that: the thrust mechanism of described support tube comprises handle, described handle is installed on described primary load bearing seat, the position of controlling of described handle is provided with second switch, described second switch and thruster electricly connect, support tube is positioned at the maximum stroke that promotes of push rod of thruster, the lower end of support tube is supported in the back chain stay, and the maximum position that promotes in the stroke of push rod that is in thruster in the back chain stay is provided with and can holds the through hole that support tube slides up and down.

5. according to claim 3 or 4 described a kind of semi-automatic folding moped, it is characterized in that: described flexible pipe structure comprises middle stay tube, stay tube is through sleeve pipe in described, and described sleeve pipe is fixedly installed in described primary load bearing seat, can coaxially slide between described middle stay tube and the described sleeve pipe.

6. according to claim 5 a kind of semi-automatic folding moped, it is characterized in that: in the described four-bar linkage structure, the leading section of described boxed rod rearward end and described lower link is connected with the damping push rod structure, described damping push rod structure comprises pipe box, bar, parts in described pipe box, the bar are connected with the rear end of upper connecting rod, another parts in described pipe box, the bar are connected with the front end of lower connecting rod, and the free end of described bar stretches into pipe box and overlaps its outer cover of back that is connected as a single entity with described pipe box spring is housed.

7. according to claim 6 a kind of semi-automatic folding moped, it is characterized in that: described scalable power-assisted pull bar comprises two profiled members, wherein profiled member one an end end and described back chain stay are rotationally connected, the one end end of another root profiled member and the rear end of lower connecting rod are rotationally connected, and the other end of described two profiled members is respectively arranged with strip hole and is connected as a single entity by bearing pin.

8. according to claim 1 a kind of semi-automatic folding moped, it is characterized in that: the outer cover of described saddle pipe is equipped with first lining, be provided with aluminum pipe in the stay tube in described, saddle pipe and exterior first lining thereof, one end stretches into the interior aluminum pipe of described middle stay tube and locatees coaxial slip between the described saddle pipe and first lining and the described aluminum pipe by first shackle member.

9. according to claim 2 a kind of semi-automatic folding moped, it is characterized in that: below described first shackle member, stay tube is provided with second shackle member in described, the outer end of described second shackle member is rotatably connected to strut member and locating part, and described strut member and described support tube are rotatably connected.

10. according to claim 2 a kind of semi-automatic folding moped, it is characterized in that: described first switch is a travel switch, and described stroke first switch is installed on the upper end of described sleeve pipe, and with described second shackle member repressive contact when car is folding.

11. it is according to claim 2 a kind of semi-automatic folding moped, it is characterized in that: the inwall of described sleeve pipe is provided with lining, the jacket wall of described lining is set in steel wire, in the described steel wire outside, the jacket wall of described lining is provided with the slip raised line vertically, and this slip raised line cooperates with the chute that the outer wall of middle stay tube is provided with.