CN209719797U - Bicycle - Google Patents

Abstract

The utility model discloses a kind of bicycles, the front frame of front-wheel is equipped with including bottom, front is connected to the main car frame in the front frame in relative rotation, seat on the main car frame is set, and the rear-wheel at the main car frame rear portion is rotatably set to around hind axle, the bicycle further includes the transmission device being removably mounted on the main car frame, the transmission device includes foot-operated, and pass through the foot-operated transmission component that can drive the rear wheel, the transmission device respectively with the main car frame, it is detachably connected between the hind axle, wherein, between the transmission device and the main car frame, in between the transmission device and the hind axle at least one at connection be to be detachably connected by what the locking device of the transmission device itself was realized.The integral demounting or installation process of transmission device all very it is simple and convenient, enable the bicycle easily bicycle state and help between car loading condition convert use.

Description

Bicycle

Technical field

The utility model relates to a kind of bicycle more particularly to a kind of dismountable bicycles of transmission device.

Background technique

In order to extend the use function of bicycle, also have in the prior art by the foot-operated dismounting of bicycle, thus will voluntarily Vehicle is as go-cart or is converted to the precedent that the juvenile product of other function uses.Such as Chinese patent CN201380041749.4 A kind of bicycle that can be converted into toy horse vehicle is disclosed, by removing the transmission system on bicycle, and then bicycle is converted For toy horse vehicle use.However, in the disassembled condition, chain wheel, connecting elements in transmission mechanism are removed, and the rear driving of chain wheel Wheel is still connect with vehicle frame, can not accomplish the complete dismounting of entire transmission system.And in the prior art there are also on some bicycles, Its transmission system needs to install by such as screw connection accessory of peripheral hardware to bicycle, is easily lost after dismounting, no What storage and next time after dismantling convenient for transmission system used installs again.

Summary of the invention

The purpose of the utility model is to provide a kind of bicycle, transmission device can easily be got off by integral demounting.

In order to achieve the above objectives, the technical solution adopted in the utility model is: a kind of bicycle, including bottom is equipped with front-wheel Front frame, the main car frame that front is connected in relative rotation in the front frame, the seat being arranged on the main car frame, with And the rear-wheel at the main car frame rear portion is rotatably set to around hind axle, the bicycle further includes being removably mounted on the master Transmission device on vehicle frame, the transmission device include foot-operated, and can drive the rear wheel by described ride Transmission component, the transmission device are detachably connected between the main car frame, the hind axle respectively, wherein the biography Between dynamic device and the main car frame, between the transmission device and the hind axle at least one at connection be by described What the locking device of transmission device itself was realized is detachably connected.

Preferably, the transmission device include the mounting base being removably mounted on the main car frame, can be around itself After axial line is rotatably set to the drive shaft of the mounting base front, can rotatably be set to the mounting base around self-axis line The driven shaft in portion, the transmission component are set between the drive shaft and the driven shaft for transmitting power.

Further, detachably connected between the driven shaft and the hind axle, the locking device is that setting exists For its relatively described hind axle being locked and being made the self-locking structure of itself and the hind axle synchronous rotary on the driven shaft.

Further, there is the mounting hole that can be axially inserted into for the driven shaft on the hind axle, it is described from Moving axis includes the shaft body that can be fittingly inserted into the mounting hole, and the self-locking structure includes being arranged in the shaft body Locking piece, the locking piece can adjustably be arranged along the radial direction position of the shaft body, and the locking piece has Lock state and unlocked state, when the locking piece is in the lock state, the locking piece protrudes from the outer of the shaft body Side peripheral wall；When the locking piece is in the unlocked state, the locking piece is retracted in the shaft body.

Further, the driven shaft includes shaft body, and the self-locking structure includes the lock being arranged in the shaft body Determine part, the locking piece can be adjustably arranged along the radial direction position of the shaft body, and the locking piece has locking State and unlocked state, when the locking piece is in the lock state, the locking piece protrudes from the outside week of the shaft body Wall；When the locking piece is in the unlocked state, the locking piece is retracted in the shaft body.

Further, it is additionally provided on the hind axle and the confined planes of the locking piece axial limiting is provided, when described When shaft body is plugged in the mounting hole and the locking piece is in the lock state, the locking piece is resisted against the confined planes On.

Further, offered in the shaft body axially through axis hole, the driven shaft further includes being capable of edge The axially opposing lock shaft being slidably threaded through in the axis hole, can drive the locking when lock shaft slides axially Part is converted between the lock state and the unlocked state.

Further, there is the sticking department being distributed along axial order and solution lock section, the sticking department in the lock shaft Outer diameter be greater than the outer diameter of the solution lock section, when the sticking department and the locking piece lean, the locking piece convert to The lock state；When the sticking department is detached from the locking piece, the locking piece can along the shaft body it is radial to It is inside retracted in the shaft body, is additionally provided on the driven shaft and is used to provide the described lock shaft and slides axially and make described Sticking department and the locking piece keep the elastic component of elastic force needed for cooperating.

As a kind of specific embodiment, the locking piece is the multiple bullet pins being arranged in the shaft body, described Multiple cotter ways for installing the bullet pin, spaced radial point of multiple cotter ways along the shaft body are provided in shaft body Cloth, and be interconnected between the cotter way and the axis hole.

Further, be provided with positioning seat on the hind axle relatively fixedly, the mounting base and the positioning seat it Between be provided with location structure, the location structure includes the mutually matched locating slot of multiple groups and positioning column, the positioning column and institute One of both locating slots are stated on the positioning seat, another one is set in the mounting base.

As a kind of specific embodiment, the locating slot is arranged on the positioning seat, and all positioning Slot is distributed on the positioning seat by the circumferentially spaced about of rotation center of the axial line of the hind axle.

Preferably, the front of the mounting base has the installation axle that can be worn with axially engaging for the drive shaft edge Set, the installation axle sleeve are detachably connected on the main car frame by connection component, and the locking device is the company Connected components.

Further, the connection component include it is multiple be slidably arranged in the installation axle and cover upper connector, it is described Connector includes connecting rod segment and the limit end on the connection rod segment end, and the diameter of the limit end is greater than institute The diameter of connection rod segment is stated, offers multiple connecting holes matched with the connector, the connecting hole on the main car frame Including the insertion hole being inserted into for the limit end, the lock hole that can be slidably matched with the connection rod segment, the insertion hole It is interconnected with the lock hole, the connection component further includes can be described for driving the connector to slide It is inserted between hole and the lock hole and converts the locking member of position.

Further, the main car frame at least has the crossbeam extended along the longitudinal direction, and the installation axle is put on energy Enough link blocks matched with the crossbeam, the connector have two groups and are arranged on the link block, the link block The bottom of the crossbeam is removably mounted on by the connector.

Further, described ride has two groups, rides described in two groups and is respectively fixedly connected to the two of the drive shaft On shaft end, and the foot-operated left and right sides for being divided into the crossbeam.

Preferably, the transmission component includes the drive sprocket being set in the drive shaft, on the driven shaft Driven sprocket, and the driving chain being stretched between the drive sprocket and the driven sprocket, the mounting base at least have There is outer cover, the drive sprocket, driven sprocket and the driving chain are housed in the outer cover.

Due to the application of the above technical scheme, the utility model has the advantage that this is practical new compared with prior art Transmission device can be integrally mounted to use on main car frame as bicycle by the bicycle of type, transmission can also be filled It sets and is integrally disassembled from main car frame and bicycle is converted to, carrier vehicle is helped to use, and between transmission device and main car frame At at least one in connection between connection, transmission device and hind axle connection be using the locking device of transmission device itself come That realizes is detachably connected, and without being in addition further added by installation fitting, integral demounting or installation process are all very simple and convenient.

Detailed description of the invention

Attached drawing 1 is the overall structure diagram of the bicycle (having transmission device) of the utility model；

Attached drawing 2 is the structural decomposition diagram of the bicycle of this attached drawing 1；

Attached drawing 3 is the overall structure diagram of the bicycle (after transmission device is removed) of the utility model；

Attached drawing 4 is the overall structure diagram (outer cover of removal transmission device) of the bicycle of this attached drawing 1；

Attached drawing 5 is the structural decomposition diagram of the bicycle of attached drawing 4；

Attached drawing 6 to attached drawing 8 is the overall structure diagram of transmission device；

Attached drawing 9 is the side view of the bicycle of attached drawing 1；

Attached drawing 10 be along attached drawing 9 A-A to schematic cross-sectional view；

Attached drawing 11 is the portion B enlarged diagram in attached drawing 10；

Attached drawing 12 is the schematic diagram of internal structure of driven shaft in transmission device；

Attached drawing 13 is the longitudinally cutting schematic diagram of the bicycle of attached drawing 1, and wherein connection component is connected on crossbeam and locks Part locking；

Attached drawing 14 is the schematic diagram in the bicycle of attached drawing 13 after locking member unlock；

Attached drawing 15 to attached drawing 17 is operating procedure schematic diagram when disassembling transmission device from bicycle；

Wherein: 100, front frame；101, front-wheel；

200, main car frame；201, rear-wheel；202, seat；203, crossbeam；204, hind axle；204a, mounting hole；204b, limit Plane；205, positioning seat；205a, locating slot；206, connecting hole；206a, insertion hole；206b, lock hole；

300, transmission device；1, mounting base；11, positioning column；12, axle sleeve is installed；13, link block；13a, sliding slot；14, outer Cover；2, drive shaft；3, driven shaft；31, shaft body；31a, axis hole；31b, cotter way；32, lock shaft；32a, sticking department；32b, solution Lock section；33, locking piece (bullet pin)；34, elastic component (spring)；4, drive sprocket；5, driven sprocket；6, driving chain；7, it connects Part；7a, connection rod segment；7b, limit end；8, locking member；9, it rides.

Specific embodiment

The technical solution of the utility model is further elaborated in the following with reference to the drawings and specific embodiments.

Referring to shown in Fig. 1 to Figure 17, it is opposite to be equipped with the front frame 100 of front-wheel 101, front including bottom for a kind of bicycle The main car frame 200 being rotationally connected in front frame 100, the seat 202 being arranged on main car frame 200, and around hind axle 204 Rotatably it is set to the rear-wheel 201 at 200 rear portion of main car frame.

The bicycle further includes the transmission device 300 being removably mounted on main car frame 200, the transmission device 300 packet Include foot-operated 9, and the transmission component that rear-wheel 201 can be driven to rotate by foot-operated 9.The transmission device 300 respectively with main car frame 200, detachably connected between hind axle 204.The bicycle can use after installing transmission device 300 as bicycle, such as It, can also be by 300 disassembling for entirety of transmission device and as helping carrier vehicle to use, as shown in Figure 3 shown in Fig. 1.Wherein, it is driven Between device 300 and main car frame 200, between transmission device 300 and hind axle 204 at least one at connection be by transmission fill Set 300 itself locking device realize be detachably connected, above-mentioned two in the present embodiment at be all by transmission device 300 itself Locking device realize be detachably connected.

The transmission device 300 include be removably mounted on main car frame 200 mounting base 1, can be around self-axis line The drive shaft 2 for being rotatably set to 1 front of mounting base, the driven shaft that 1 rear portion of mounting base can be rotatably set to around self-axis line 3, transmission component is set between drive shaft 2 and driven shaft 3 for transmitting power.Referring to fig. 4, it shown in Fig. 5, in the present embodiment, passes Transmission component in dynamic device 300 includes drive sprocket 4, the driven sprocket on driven shaft 3 that setting is set in drive shaft 2 5, and the driving chain 6 being stretched between drive sprocket 4 and driven sprocket 5, mounting base 1 is at least with outer cover 14, drive chain Wheel 4, driven sprocket 5 and driving chain 6 are housed in outer cover 14.

Referring to shown in each attached drawing, on the bicycle, the connection between transmission device 300 and hind axle 204 is to pass through transmission What the locking device of device 300 itself was realized is detachably connected.Specifically, removably connect between driven shaft 3 and hind axle 204 It connects, there is the self-locking structure for its opposing rear wheels axis 204 being locked and being made itself and 204 synchronous rotary of hind axle on driven shaft 3, it should be certainly Lock construction is the locking device constituted between transmission device 300 and hind axle 204.

Have referring to shown in each attached drawing, on hind axle 204 can for the mounting hole 204a that driven shaft 3 is axially inserted into, from Self-locking structure on moving axis 3 is for locking it in mounting hole 204a.Referring to fig. 4 to shown in Figure 12, driven shaft 3 includes axis sheet Body 31, self-locking structure include the locking piece 33 being arranged in shaft body 31, which can be along the radial direction side of shaft body 31 Adjustably it is arranged in shaft body 31 to position, which has lock state and unlocked state, at locking piece 33 When lock state, locking piece 33 protrudes from the outer perimeter wall of shaft body 31, when so that driven shaft 3 being plugged in mounting hole 204a And it cannot deviate from from mounting hole 204a；When locking piece 33 is in the unlocked state, locking piece 33 is retracted in shaft body 31, is made Obtaining 3 entirety of driven shaft can extract outward from mounting hole 204a.It is additionally provided on hind axle 204 and provides locking piece 33 axial limit The confined planes 204b of position, when shaft body 31 is plugged in mounting hole 204a and locking piece 33 is in the lock state, locking piece 33 It is resisted against on confined planes 204b, to cannot deviate from from mounting hole 204a.

Referring to shown in Figure 11, Figure 12, offered in shaft body 31 axially through axis hole 31a, driven shaft 3 further includes energy Enough axially opposed lock shafts 32 being slidably threaded through in axis hole 31a, the lock shaft 32 can drive lock when sliding axially Determine part 33 to convert between lock state and unlocked state.Specifically, there is the locking being distributed along axial order in lock shaft 32 The outer diameter of portion 32a and solution lock section 32b, sticking department 32a are greater than the outer diameter of solution lock section 32b, when sticking department 32a and locking piece 33 offset By when, locking piece 33 is radially pushed outwardly and converts to lock state；When sticking department 32a disengaged from locking member 33, unlock The position of portion 32b is corresponding with locking piece 33, and locking piece 33 being capable of being radially-inwardly retracted in shaft body 31 along shaft body 31. Elastic component 34 is additionally provided on driven shaft 3, which slides axially for providing lock shaft 32 and make sticking department 32a Elastic force needed for keeping cooperation with locking piece 33, it is spring that elastic component 34, which uses, herein.

Referring to shown in Figure 11, Figure 12, in the present embodiment, locking piece 33 is the multiple bullet pins 33 being arranged in shaft body 31, Multiple cotter way 32b for installing bullet pin 33, spaced radial point of multiple cotter way 32b along shaft body 31 are provided in shaft body 31 Cloth, and be interconnected between cotter way 32b and axis hole 32a.Bullet pin 33 is set as two herein, in the interval setting of the 180 ° of ground in interval.

Referring to shown in Fig. 5, Fig. 6 and Fig. 8, being fixedly disposed positioning seat 205, mounting base 1 and positioning seat on hind axle 204 Location structure is provided between 205, the location structure include the multiple groups locating slot 205a being arranged on positioning seat 205, setting exist Multiple positioning columns 11 in mounting base 1, all locating slot 205a are rotation with the axial line of hind axle 204 on positioning seat 205 Turn the circumferentially spaced about distribution of center line, correspondingly, the also circumferentially spaced distribution of positioning column 11.Certainly, it is other certain In a little modes, locating slot 205a can also be opened in mounting base 1 and positioning column 11 is set on positioning seat 205.

In this way, dismounting can be carried out as follows between driven shaft 3 and hind axle 204: when installation, first inwardly pushing lock Then 3 entirety of driven shaft is axially inserted into hind axle 204, and make by dead axle 32 so that sticking department 32a is detached from bullet pin 33 Positioning column 11 is aligned one by one with locating slot 205a, until bullet pin 33 reaches at confined planes 204b, lock shaft 32 is then unclamped, in bullet Under the active force of spring 34, lock shaft 32 is slided and sticking department 32a is offseted with bullet pin 33, so that bullet pin 33 is maintained at lock Determine under state, realize the installation of driven shaft 3 and hind axle 204, so that driven shaft 3 is able to drive the synchronous rotation of hind axle 204 Turn.When disassembly, operator only needs inwardly to push lock shaft 32, so that it is overcome the active force of spring 34 and make sticking department 32a with Bullet pin 33 is detached from, and then extracts driven shaft 3 outward, and bullet pin 33 will automatically contract under the squeezing action of mounting hole 204a inner wall It is back in shaft body 31 and realizes unlock, driven shaft 3 is integrally detached from mounting hole 204a.

Referring to shown in each attached drawing, on the bicycle, the connection between transmission device 300 and main car frame 200 is also to pass through biography What the locking device of dynamic device 300 itself was realized is detachably connected.Referring to shown in Fig. 6 to Fig. 8 and Figure 13 to Figure 17, install The front of seat 1 has and can pass through connection group for the installation axle sleeve 12 that drive shaft 2 along axially engaging is worn, the installation axle sleeve 12 Part is detachably connected on main car frame 200.The connection component is the locking constituted between transmission device 300 and main car frame 200 Device.

Specifically, there is crossbeam 203, installation axle sleeve 12 is removably connected by above-mentioned connection component on main car frame 200 It connects in the bottom of crossbeam 203, herein, installing also has the link block 13 that can be matched with crossbeam 203 on axle sleeve 12, connection Installation can be fitted closely between block 13 and crossbeam 203.It is respectively fixedly connected with foot-operated 9 in the two axial ends of drive shaft 2, rides 9 are divided into the left and right sides of crossbeam 203.

Referring to shown in Fig. 6, Fig. 8, Figure 13 to Figure 17, connection component includes multiple companies being slidably arranged on link block 13 Fitting 7, setting is provided with the sliding slot 13a of 7 slide-and-guide of connector on link block 13, the connector 7 include connection rod segment 7a and The diameter of limit end 7b on the connection end rod segment 7a, limit end 7b are greater than the diameter of connection rod segment 7a.Main car frame Multiple connecting holes 206 matched with connector 7 are offered on 200 crossbeam 203, which includes being interconnected It is inserted into hole 206a and lock hole 206b, wherein insertion hole 206a is inserted into for limit end 7b corresponding matching, lock hole 206b It can be slipped fit inserted into for connection rod segment 7a.In this way, in connection, by connector 7 first from insertion hole 206a insertion, then The sliding of connector 7 is driven, reaches it in lock hole 206b, limit end 7b can make to be limited, connector 7 is realized and connects Connect the connection between block 13.

Connection component further include for drive connector 7 slide and can insertion hole 206a and lock hole 206b it Between convert the locking member 8 of position, which is rotatably arranged on link block 13 and between connector 7 using cam surface It ordinatedly connects, so that can be realized fast with crossbeam 203 with the 13a sliding along the chute of follower link 7 when rotating locking piece 8 Tear connection open.In the present embodiment, connector 7 is provided with two groups, in connection or when disassembly, the direction phase of two groups of connectors 7 sliding Instead, being closely connected between crossbeam 203 is realized.

In this way, assembly and disassembly can be carried out as follows between 1 front of mounting base and main car frame 200: referring to Figure 13, Tu14Suo Show, when installation, link block 13 is placed in 203 lower section of crossbeam, and two connectors 7 are inserted correspondingly into two companies of crossbeam 203 It connects in hole 206, then rotates two locking members 8, so that connector 7 gradually slides into lock hole 206b from insertion hole 206a, it is real The axial limiting to limit end 7b is showed, in this way, just completing the installation between 1 front of mounting base and main car frame 200；Disassembly When, then inverse operation, i.e. rotary fastenings 8, after connector 7 slides in insertion hole 206a from lock hole 206b, by mounting base 2 The whole opposite crossbeam 203 in front be downwardly drawn out so that connector 7 is fully disengaged from connecting hole 206.

In this way, when need that transmission device 300 is installed on main car frame 200 and as bicycle in use, only need will be from Moving axis 3 is inserted into the mounting hole 204a of hind axle 204, then the link block 13 of 1 front of mounting base is placed in the lower section of crossbeam 203 And connector 7 is inserted correspondingly into connecting hole 206, then rotate two locking members 8, can be realized transmission device 300 with Main car frame 200 is fixedly connected, and driven shaft 3 can be driven to drive 204 synchronous rotary of hind axle when user tramples foot-operated 9.When Need to dismantle underdrive device 300 as help carrier vehicle in use, then first operation front locking member 8 and connection component is disengaged Then connection between crossbeam 203 and mounting base 1 inwardly pushes lock shaft 32 again and extracts 3 entirety of driven shaft outward Complete the integral demounting of transmission device 300.Above-mentioned installation process and disassembly process are all without the peace other than transmission device 300 Load relay part realizes that operation is very simple and convenient, has effectively expanded the use function of bicycle.

The above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with technique Personage can understand the content of the utility model and implement accordingly, do not limit the protection scope of the present invention. All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover the protection scope of the utility model it It is interior.

Claims (15)

1. a kind of bicycle is equipped with the front frame of front-wheel including bottom, front is connected in relative rotation in the front frame Main car frame, the seat being arranged on the main car frame, and it is rotatably set to around hind axle the rear-wheel at the main car frame rear portion, Be characterized in that: the bicycle further includes the transmission device being removably mounted on the main car frame, the transmission device packet Include it is foot-operated, and by the foot-operated transmission component that can drive the rear wheel, the transmission device respectively with it is described It is detachably connected between main car frame, the hind axle, wherein between the transmission device and the main car frame, the transmission In between device and the hind axle at least one at connection be realized by the locking device of the transmission device itself can Dismantling connection.

2. bicycle according to claim 1, it is characterised in that: the transmission device is described including being removably mounted on Mounting base on main car frame, the drive shaft that the mounting base front can be rotatably set to around self-axis line, can be around itself Axial line is rotatably set to the driven shaft at the mounting base rear portion, and the transmission component is set to the drive shaft and the driven shaft Between for transmitting power.

3. bicycle according to claim 2, it is characterised in that: between the driven shaft and the hind axle removably Connection, the locking device be arranged on the driven shaft for by its relatively described hind axle lock and make its with it is described after The self-locking structure of wheel shaft synchronous rotary.

4. bicycle according to claim 3, it is characterised in that: having on the hind axle can be for the driven shaft edge The mounting hole being axially inserted into, the driven shaft include the shaft body that can be fittingly inserted into the mounting hole, the self-locking knot Structure includes the locking piece being arranged in the shaft body, and the locking piece can be adjustable along the radial direction position of the shaft body Site preparation setting, the locking piece have lock state and unlocked state, when the locking piece is in the lock state, the locking Part protrudes from the outer perimeter wall of the shaft body；When the locking piece is in the unlocked state, the locking piece is retracted in described In shaft body.

5. bicycle according to claim 4, it is characterised in that: be additionally provided on the hind axle and provide the locking piece The confined planes of axial limiting, when the shaft body is plugged in the mounting hole and the locking piece is in the lock state, institute Locking piece is stated to be resisted against on the confined planes.

6. bicycle according to claim 4, it is characterised in that: offered in the shaft body axially through axis Hole, the driven shaft further include can the axially opposed lock shaft being slidably threaded through in the axis hole, the lock shaft edge The locking piece can be driven to convert when sliding axially between the lock state and the unlocked state.

7. bicycle according to claim 6, it is characterised in that: have the lock being distributed along axial order in the lock shaft Determine portion and solution lock section, the outer diameter of the sticking department is greater than the outer diameter of the solution lock section, when the sticking department and the locking piece phase Against when, the locking piece is converted to the lock state；When the sticking department is detached from the locking piece, the locking piece energy Enough being radially-inwardly retracted in the shaft body along the shaft body, are additionally provided on the driven shaft and are used to provide the described lock Dead axle slides axially and the sticking department and the locking piece is made to keep the elastic component for cooperating required elastic force.

8. bicycle according to claim 7, it is characterised in that: the locking piece be arranged in it is more in the shaft body A bullet pin is provided with multiple cotter ways for installing the bullet pin in the shaft body, and multiple cotter ways are along the shaft body Spaced radial distribution, and between the cotter way and the axis hole be interconnected.

9. according to the described in any item bicycles of claim 3 to 8 relatively fixedly, it is characterised in that: set on the hind axle It is equipped with positioning seat, location structure is provided between the mounting base and the positioning seat, the location structure includes that multiple groups are mutual The locating slot and positioning column of cooperation, one of both described positioning column and the locating slot are set on the positioning seat, separately One is set in the mounting base.

10. bicycle according to claim 9, it is characterised in that: the locating slot is arranged on the positioning seat, and institute The locating slot having is distributed on the positioning seat by the circumferentially spaced about of rotation center of the axial line of the hind axle.

11. bicycle according to claim 2, it is characterised in that: the front of the mounting base has can be for the drive Moving axis is detachably connected to the main vehicle by connection component along the installation axle sleeve worn with axially engaging, the installation axle sleeve On frame, the locking device is the connection component.

12. bicycle according to claim 11, it is characterised in that: the connection component includes multiple is slidably arranged in The installation axle covers upper connector, and the connector includes connecting rod segment and the positive stop end on the connection rod segment end Head, the diameter of the limit end are greater than the diameter of the connection rod segment, offer the multiple and connection on the main car frame The connecting hole that part matches, the connecting hole include for it is described limit end insertion insertion hole, can be with the connection rod segment The lock hole being slidably matched, the insertion hole and the lock hole are interconnected, and the connection component further includes for driving State the locking member that connector slides and can convert position between the insertion hole and the lock hole.

13. bicycle according to claim 12, it is characterised in that: the main car frame at least has to be extended along the longitudinal direction Crossbeam, the installation axle puts on the link block that can match with the crossbeam, and the connector has two groups and is all provided with It sets on the link block, the link block is removably mounted on the bottom of the crossbeam by the connector.

14. bicycle according to claim 13, it is characterised in that: described ride has two groups, and difference is ridden described in two groups It is fixedly attached in the two axial ends of the drive shaft, and the foot-operated left and right sides for being divided into the crossbeam.

15. bicycle according to claim 2, it is characterised in that: the transmission component includes being set in the drive shaft Drive sprocket, the driven sprocket on the driven shaft, and be stretched in the drive sprocket and the driven sprocket it Between driving chain, the mounting base at least has outer cover, and the drive sprocket, driven sprocket and the driving chain accommodate In the outer cover.