CN112498552B

CN112498552B - Bicycle capable of being linked and stretched

Info

Publication number: CN112498552B
Application number: CN202011205973.0A
Authority: CN
Inventors: 陈伦; 程健宏
Original assignee: TANGSHAN JINHENGTONG BICYCLE PARTS CO Ltd
Current assignee: TANGSHAN JINHENGTONG BICYCLE PARTS Co.,Ltd.
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2022-01-25
Anticipated expiration: 2040-11-02
Also published as: CN112498552A

Abstract

The invention discloses a bicycle capable of extending and retracting in a linkage manner, which structurally comprises a handlebar, wherein a front axle is fixedly connected to the center of the handlebar, an axle frame is connected to the outer side of the front axle in a rotating fit manner, one end of the axle frame is connected with a pedal frame in a sliding fit manner, a front extending and retracting device is arranged in the axle frame, pedals are arranged on two sides of the pedal frame, an extending and retracting frame is connected to the inside of the pedal frame in a sliding fit manner, a pedal locking device is arranged in the extending and retracting frame, a pedal is arranged on one side of the pedal locking device, a cushion frame is fixedly arranged on one side of the extending and retracting frame, a cushion is arranged at the upper end of the cushion frame, the extending and retracting frame is communicated with the inner space of the cushion frame, an extending and retracting linkage device is arranged inside the extending and retracting frame, the design of the front extending and retracting device is adopted, the pedal frame is pushed to move away by rotating the handlebar, the gravity center of the vehicle body is reduced, the turning radius is increased, the safety of the equipment is improved, the design of a telescopic linkage device is adopted, the extension of the vehicle body and the rising of a cushion are driven by a motor, and the comfort of the equipment is improved.

Description

Bicycle capable of being linked and stretched

Technical Field

The invention belongs to the technical field of bicycles, and particularly relates to a bicycle capable of being extended and retracted in a linkage mode.

Background

The shortcoming of prior art is that the vehicle distance of current bicycle is fixed mostly, can't adjust, can't compromise security and flexibility, and the cushion of current bicycle goes up and down to adopt modes such as screw often, and the regulation is wasted time and energy, and the operation is difficult.

For this reason, long-term research has been conducted and various solutions have been proposed.

For example, a new retractable bicycle frame disclosed in chinese patent literature [ application No.: CN201620947665.8], including a front fork tube, a crossbeam, a seat tube, an oblique beam, a bottom fork, a middle shaft sleeve and a bottom fork, wherein the crossbeam is arranged to be composed of a front pillar, a rear sleeve and a length adjusting mechanism, the end of the front pillar is arranged on the front fork tube, the end of the rear sleeve is arranged on the seat tube, the length adjusting mechanism is arranged between the front end of the front pillar and the rear sleeve, a groove is arranged at the upper end of the seat tube, a rain-proof and sun-proof mechanism is arranged in the groove, and the seat tube is further provided with a height adjusting structure along the central axis direction, the upper end of the oblique beam is arranged on the outer surface of the rear sleeve, the lower end of the oblique beam, the lower end of the seat tube and the front end of the bottom fork are both arranged on the middle shaft sleeve, the upper end of the bottom fork is arranged on the seat tube, and the lower end of the bottom fork and the rear end of the bottom fork are both arranged on the rear fork piece. By adopting the bicycle frame, the length and the height of the bicycle frame can be adjusted according to the actual requirements of riders, the overall size of the bicycle is reduced, and the riding comfort is ensured.

Above-mentioned scheme, length and height all need manual regulation, and can't change the wheel base according to the state of riding at the in-process of riding, have reduced work efficiency.

Disclosure of Invention

The invention aims to solve the problems and provide equipment which can automatically adjust the wheel track and the height of a cushion, can reduce the center of gravity when turning, can improve the wheel track, has the advantages of practicability and the like.

The invention is realized by the following technical scheme: the invention discloses a bicycle capable of being linked and stretched, which comprises a handlebar, wherein a front axle is fixedly connected to the center of the handlebar, an axle frame is connected to the outer side of the front axle in a rotating fit manner, a pedal frame is connected to one end of the axle frame in a sliding fit manner, a front stretching device which enables the pedal frame to be close to or far away from the front axle through the rotation of the front axle is arranged in the axle frame, pedals are arranged on two sides of the pedal frame in a rotating manner, a stretching frame is connected to the inside of the pedal frame in a sliding fit manner, a pedal locking device which enables the pedal frame and the stretching frame to be locked and separated is arranged in the stretching frame, a pedal is arranged on one side of the pedal locking device, a cushion frame is fixedly arranged on one side of the stretching frame, a cushion is arranged at the upper end of the cushion frame, the stretching frame is communicated with the inner space of the cushion frame, and the stretching frame are internally provided with a cushion frame which enables the cushion to be lifted and the stretching frame to be stretched in the stepping frame to be stretched simultaneously The telescopic linkage device is contracted, so that the equipment can automatically adjust the wheel track and the height of the cushion.

A further technical scheme, preceding telescoping device including the symmetry set firmly in the axletree extension post of front axle both sides, axletree extension post outside is provided with rotates the connecting seat, it has the rotation spliced pole to rotate to set firmly in the connecting seat, rotate the spliced pole with axletree extension post passes through normal running fit and connects, it has the axletree push rod to rotate connecting seat one side, both sides the axletree push rod with the pedal frame offsets simultaneously, the axletree push rod outside is provided with the spacing spring assembly that the pedal frame pulled back the playback to make equipment can be according to the expansion wheel base and the reduction focus of the state linkage of the turn of vehicle.

A further technical scheme, spacing spring unit including the symmetry set firmly in spring connector block in the axletree frame, be provided with the spacing groove in the spring connector block, the spacing groove with axletree push rod sliding fit connects, spring connector block with through playback spring elastic connection between the pedal frame, pedal frame one end has set firmly first stopper, first stopper with the axletree frame is connected through sliding fit, axletree frame one end has set firmly the second stopper, the second stopper with the pedal frame is connected through sliding fit, first stopper with the second stopper restricts jointly the removal of pedal frame to make personnel when need not to turn, with the front wheel just, improve equipment ease for use.

In a further technical scheme, the foot support locking device comprises a foot support column fixedly arranged at one end of the foot support, the foot brace column is connected with the telescopic frame in a rotating fit manner, one end of the foot brace column is fixedly provided with an unlocking cam, a transmission strip is arranged on one side of the unlocking cam, a lock limiting block is fixedly arranged in the telescopic frame, the transmission strip is connected with the lock limiting block in a sliding fit manner, one end of the transmission bar is fixedly provided with an unlocking inclined block, the telescopic frame is internally and symmetrically provided with lock tongues, the lock tongues are connected with the telescopic frame in a sliding fit way, the lock tongues are elastically connected through a lock spring, an inclined plane groove is arranged in each lock tongue, the inclined plane groove is connected with the unlocking inclined block in a sliding mode through an inclined plane, the pedal frame is symmetrically provided with lock slots, and the lock slots and the lock tongues are correspondingly arranged in a clamping manner, so that the telescopic frame and the pedal frame can be locked with each other.

A further technical scheme, flexible aggregate unit including set firmly in linkage motor in the expansion bracket, linkage motor one side power is connected with the action wheel, expansion bracket one end is provided with flexible rotation post, flexible rotation post with the expansion bracket is connected through normal running fit, flexible rotation post is last to have set firmly from the driving wheel, from the driving wheel with the winding has the drive belt between the action wheel, the drive belt with action wheel power is connected, be provided with the gear from driving wheel one side, the gear with flexible rotation post fixed connection, pedal frame one side has set firmly the rack, the gear with rack toothing sets up, action wheel one end is provided with the control the cushion lifting unit that the cushion linkage goes up and down to make linkage motor can control the flexible of expansion bracket in the pedal frame.

The technical proposal is that the cushion lifting component comprises a clutch groove at one end of the driving wheel, one side of the clutch groove is provided with a clutch lug, the clutch lug is correspondingly engaged with the clutch groove, one end of the clutch lug is provided with a clutch push rod, the clutch lug is arranged at one end of a telescopic rod of the clutch push rod, one side of the clutch push rod is fixedly provided with a threaded rod, the outer side of the threaded rod is connected with a fixed ring through rotating fit, the fixed ring is fixedly connected with the cushion frame through a fixed column, the outer side of the threaded rod is provided with an external thread, one end of the threaded rod is provided with a cushion column, the inner part of the cushion column is provided with an internal thread, the external thread is matched and connected with the internal thread, one side of the cushion column is fixedly provided with a sliding block, the cushion frame is internally provided with a sliding groove, the sliding block is connected with the sliding groove through sliding fit, the cushion is fixedly arranged at the upper end of the cushion column, and a transmission component adaptive to vehicle distance expansion is arranged on one side of the cushion frame (102), so that the cushion can be lifted while the expansion frame expands and contracts.

Further technical scheme, drive disk assembly including set up in the regulating block of cushion frame one side, the regulating block with the cushion frame is connected through sliding fit, the cushion frame with connect through adjusting spring between the regulating block, regulating block one side pivoted is provided with adjusting sprocket, the last power connection of adjusting sprocket has the chain, the chain is with adjusting sprocket, transmission main sprocket, transmission from sprocket power connection, transmission main sprocket set firmly in running-board one side, transmission is from sprocket and bicycle rear wheel fixed connection to make the vehicle distance transform the back, chain drive can normal use.

The invention has the beneficial effects that: the design of the front telescopic device is adopted, the pedal frame is pushed to be far away by rotating the handlebar, the gravity center of the automobile body is reduced, the turning radius is increased, the safety of the equipment is improved, the design of the telescopic linkage device is adopted, the extension of the automobile body and the rising of the cushion are driven by a motor, and the comfort of the equipment is improved.

The advantages are as follows:

1. the design of the front telescopic device is adopted, the design of a front axle, axle push rods and a pedal frame is utilized, the front axle is driven to rotate by rotating a handlebar, the axle push rods positioned on two sides of the front axle stretch and contract, and the extended axle push rods push the pedal frame to be far away from the front axle, so that the center of gravity of a vehicle body is reduced, the wheel span is increased and the stability of equipment is improved during turning; the design of playback spring, first stopper, second stopper has been utilized, and elasticity through the playback spring pulls back the normal position with pedal frame, improve equipment's operability, through the restriction of first limit slider and second limit slider, makes pedal frame can not thoroughly slide out the pedestal, guarantees the security that personnel ridden.

2. The design of the foot support locking device is adopted, the design of the foot support, the unlocking cam and the transmission bar is utilized, and the connection design of the foot support and the unlocking cam ensures that the unlocking cam pushes out the transmission bar when the foot support is supported on the ground, and the unlocking cam rotates out when the foot support is lifted off the ground without limiting the transmission bar, so that the control of the foot support locking device is centralized on the foot support, the additional unlocking operation of personnel is not needed, and the equipment usability is improved; the design of transmission strip, spring bolt, locked groove has been utilized, will unblock sloping block push the inclined plane inslot through the transmission strip, realize the withdrawal of spring bolt, release spring bolt and unblock sloping block through the lock spring between the spring bolt to make the spring bolt stretch out the withdrawal, be connected through the cooperation of spring bolt and locked groove, make pedal frame and expansion bracket fixed and separate, it is equipment stability when making personnel ride, improve equipment security.

3. The design of a telescopic linkage device is adopted, the design of a linkage motor, a driving wheel, a driven wheel, a gear and a rack is utilized, the gear is finally rotated through the rotation of the linkage motor and the transmission of the driving wheel, a transmission belt, the driven wheel and a telescopic rotating column, the gear is meshed with and rotates on the rack, and the telescopic frame can be stretched in the pedal frame, so that a bicycle body can be stretched when riding and can be contracted when being parked, and the practicability of the device is improved; the cell-phone of separation and reunion recess, separation and reunion lug, separation and reunion push rod has been utilized, promotes the separation and reunion lug through separation and reunion push rod and gets into and break away from the separation and reunion recess, makes action wheel and threaded rod be connected and the separation to make the personnel can control the lift degree of cushion, improve equipment travelling comfort.

Drawings

FIG. 1 is a schematic diagram of the apparatus of the present invention;

FIG. 2 is a schematic cut-away view of the apparatus of FIG. 1 of the present invention;

FIG. 3 is a cut-away schematic view of the apparatus of the present invention in a turning position;

FIG. 4 is an enlarged schematic view of the axle bracket of FIG. 3 of the present invention at location A;

FIG. 5 is a schematic sectional top view of the apparatus of FIG. 3 of the present invention;

FIG. 6 is an enlarged view of the foot rest of FIG. 5 of the present invention at position B;

FIG. 7 is a side cutaway schematic view of the apparatus of FIG. 3 of the present invention;

FIG. 8 is an enlarged schematic view of the invention at position C of the cushion frame of FIG. 7;

FIG. 9 is a schematic side cross-sectional view of the apparatus of FIG. 3 of the present invention;

FIG. 10 is an enlarged schematic view of the invention at D of the seat cushion frame of FIG. 9;

FIG. 11 is a schematic structural view of the transmission member of the present invention;

in the figure, a cushion 101, a cushion frame 102, a pedal frame 103, a handlebar 104, a front axle 105, an axle frame 106, a foot support 107, a foot pedal 108, a homing spring 109, a limiting groove 110, a spring connecting block 111, an axle push rod 112, an axle extending column 113, a rotary connecting column 114, a rotary connecting seat 115, a first limiting block 116, a second limiting block 117, an expansion frame 118, a rack 119, a bolt 120, a lock spring 121, a driving strip 122, a lock limiting block 123, a foot support column 124, an unlock cam 125, a gear 126, a telescopic rotary column 127, a driven wheel 128, a lock groove 129, a bevel groove 130, an unlock bevel block 131, a driving wheel 132, a link motor 133, a driving belt 134, a cushion column 135, a threaded rod 136, a fixing ring 137, a clutch push rod 138, a fixing column 139, a clutch lug 140, a clutch groove 141, a sliding block 142, an internal thread 143, an external thread 144, a sliding groove 145, a chain 146, a transmission main chain wheel 147, an adjusting spring 148, a pedal support 107, a spring connecting block 110, a spring connecting block 120, a lock connecting block connecting, Adjusting sprocket 149, adjusting block 150, driven sprocket 151, front telescoping device 950, foot support latch 951, and telescoping linkage 952.

Detailed Description

As shown in fig. 1 to 11, the present invention is explained in detail, and for convenience of description, the following orientations are defined as follows: the up-down, left-right, front-back direction described below is consistent with the up-down, left-right, front-back direction of the projection relation of the bicycle itself in fig. 1, the bicycle capable of linked extension comprises a handlebar 104, a front axle 105 is fixedly connected to the center of the handlebar 104, an axle frame 106 is connected to the outer side of the front axle 105 through a rotating fit, one end of the axle frame 106 is connected with a pedal frame 103 through a sliding fit, a front extension device 950 which enables the pedal frame 103 to be close to or far away from the front axle 105 through the rotation of the front axle 105 is arranged in the axle frame 106, pedals 108 are rotatably arranged on both sides of the pedal frame 103, an extension frame 118 is connected in the pedal frame 103 through a sliding fit, a pedal locking device 951 which locks and separates the pedal frame 103 and the extension frame 118 is arranged in the extension frame 118, a pedal 107 is arranged on one side of the pedal locking device 951, a cushion frame 102 is fixedly arranged on one side of the extension frame 118, a cushion 101 is arranged on the upper end of the cushion frame 102, the telescopic frame 118 is communicated with the inner space of the cushion frame 102, and a telescopic linkage 952 which enables the cushion 101 to ascend and descend and the telescopic frame 118 to stretch in the pedal frame 103 is arranged inside the telescopic frame 118 and the cushion frame 102, so that the equipment can automatically adjust the wheel distance and the cushion height.

Beneficially, the front telescopic device 950 comprises axle extending columns 113 symmetrically and fixedly arranged on two sides of the front axle 105, a rotating connecting seat 115 is arranged on the outer side of the axle extending column 113, a rotating connecting column 114 is fixedly arranged in the rotating connecting seat 115, the rotating connecting column 114 is connected with the axle extending column 113 in a rotating fit manner, an axle push rod 112 is fixedly arranged on one side of the rotating connecting seat 115, the axle push rods 112 on two sides are not abutted to the pedal frames 103 simultaneously, and a limiting spring assembly for pulling the pedal frames 103 back to the original position is arranged on the outer side of the axle push rod 112, so that the device can be linked to expand the wheel track and reduce the center of gravity according to the turning state of the vehicle.

Beneficially, the limiting spring assembly comprises spring connecting blocks 111 symmetrically and fixedly arranged in the axle frame 106, limiting grooves 110 are formed in the spring connecting blocks 111, the limiting grooves 110 are connected with push rods of an axle push rod 112 in a sliding fit mode, the spring connecting blocks 111 are elastically connected with the pedal frame 103 through return springs 109, a first limiting block 116 is fixedly arranged at one end of the pedal frame 103, the first limiting block 116 is connected with the axle frame 106 in a sliding fit mode, a second limiting block 117 is fixedly arranged at one end of the axle frame 106, the second limiting block 117 is connected with the pedal frame 103 in a sliding fit mode, the first limiting block 116 and the second limiting block 117 limit movement of the pedal frame 103 together, accordingly, when a person does not need to turn, the front wheel can be turned, and the usability of the device is improved.

Beneficially, wherein the foot support locking device 951 comprises a foot support column 124 fixedly arranged at one end of a foot support 107, the foot support column 124 is connected with the telescopic frame 118 in a rotating fit manner, an unlocking cam 125 is fixedly arranged at one end of the foot support column 124, a transmission bar 122 is arranged at one side of the unlocking cam 125, a locking limiting block 123 is fixedly arranged in the telescopic frame 118, the transmission bar 122 is connected with the locking limiting block 123 in a sliding fit manner, an unlocking inclined block 131 is fixedly arranged at one end of the transmission bar 122, locking tongues 120 are symmetrically arranged in the telescopic frame 118, the locking tongues 120 are connected with the telescopic frame 118 in a sliding fit manner, the locking tongues 120 are elastically connected through locking springs 121, inclined plane grooves 130 are formed in the locking tongues 120, the inclined plane grooves 130 are slidably connected with the unlocking inclined block 131 through inclined planes, locking grooves 129 are symmetrically formed in the foot support 103, and the locking grooves 129 are correspondingly arranged with the locking tongues 120, so that the telescopic frame and the foot support can be locked with each other.

Beneficially, the telescopic linkage 952 includes a linkage motor 133 fixedly disposed in the telescopic frame 118, one side of the linkage motor 133 is dynamically connected with a driving wheel 132, one end of the telescopic frame 118 is provided with a telescopic rotating column 127, the telescopic rotating column 127 is connected with the telescopic frame 118 in a rotating fit manner, a driven wheel 128 is fixedly disposed on the telescopic rotating column 127, a transmission belt 134 is wound between the driven wheel 128 and the driving wheel 132, the transmission belt 134 is dynamically connected with the driving wheel 132, one side of the driven wheel 128 is provided with a gear 126, the gear 126 is fixedly connected with the telescopic rotating column 127, one side of the pedal frame 103 is fixedly provided with a rack 119, the gear 126 is meshed with the rack 119, one end of the driving wheel 132 is provided with a cushion lifting component for controlling the cushion 101 to lift in a linkage manner, so that the linkage motor can control the telescopic frame to stretch and retract in the pedal frame.

Beneficially, the cushion lifting assembly includes a clutch groove 141 at one end of the driving wheel 132, a clutch projection 140 is disposed at one side of the clutch groove 141, the clutch projection 140 is disposed in engagement with the clutch groove 141, a clutch push rod 138 is disposed at one end of the clutch projection 140, the clutch projection 140 is disposed at one end of a telescopic rod of the clutch push rod 138, a threaded rod 136 is fixedly disposed at one side of the clutch push rod 138, a fixing ring 137 is connected to the outer side of the threaded rod 136 in a rotating fit manner, the fixing ring 137 is fixedly connected to the cushion frame 102 through a fixing column 139, an external thread 144 is disposed at the outer side of the threaded rod 136, a cushion column 135 is disposed at one end of the threaded rod 136, an internal thread 143 is disposed inside the cushion column 135, the external thread 144 is connected to the internal thread 143 in a fit manner, a sliding block 142 is fixedly disposed at one side of the cushion column 135, a sliding groove 145 is disposed inside the cushion frame 102, the sliding groove 142 is connected to the sliding fit, and the cushion 101 is fixedly disposed at the upper end of the cushion column 135, a transmission member adapted to the extension and contraction of the vehicle distance is provided on one side of the seat cushion frame 102, so that the seat cushion can be lifted and lowered while the expansion frame is expanded and contracted.

Beneficially, wherein the transmission component comprises an adjusting block 150 arranged on one side of the cushion frame 102, the adjusting block 150 is connected with the cushion frame 102 through a sliding fit, the cushion frame 102 is connected with the adjusting block 150 through an adjusting spring 148, an adjusting chain wheel 149 is rotatably arranged on one side of the adjusting block 150, a chain 146 is dynamically connected to the adjusting chain wheel 149, a transmission main chain wheel 147 and a transmission auxiliary chain wheel 151 are dynamically connected through the chain 146, the transmission main chain wheel 147 is fixedly arranged on one side of the pedal 108, and the transmission auxiliary chain wheel 151 is fixedly connected with a rear wheel of the bicycle, so that the chain transmission can be normally used after the distance between the bicycle and the bicycle is changed.

In the initial state, the above devices, components and structures are in the stop working state, the return spring 109 pulls the pedal frame 103 into the axle frame 106, the pedal frame 103 is in contact with the axle push rods 112 at both sides, the foot supports 107 are in the support state, the unlocking cam 125 is in the state of pushing the transmission strip 122, the bolt 120 is in the retraction state, the expansion bracket 118 is in the retraction position in the pedal frame 103, the seat cushion 101 is in the lowering state, and the person can maintain or store the bicycle.

When the vehicle turns, a person rotates the handle bar 104 to rotate the wheels, simultaneously the front axle 105 drives the axle extension column 113 to rotate, the axle push rod 112 on one side pushes the pedal frame 103 to be away from the front axle 105 under the limitation of the limiting groove 110, the axle push rod 112 on the other side is pulled by the axle extension column 113 to be away from the pedal frame 103, at the moment, the wheel track of the vehicle is increased, and the vehicle starts to turn.

When the foot support locking device 951 needs to be locked, a person rotates the foot support 107 to the position parallel to the telescopic frame 118, the unlocking cam 125 rotates, the transmission bar 122 can move rightwards, the locking spring 121 pushes the locking tongue 120 to move outwards, meanwhile, the locking tongue 120 pushes the transmission bar 122 to move rightwards, finally, the locking tongue 120 enters the locking groove 129, and at the moment, the locking of the foot support locking device 951 is completed.

When the telescopic rack 118 needs to extend out of the pedal rack 103, the linkage motor 133 drives the driving wheel 132 to rotate, so that the driving belt 134 drives the driven wheel 128 to rotate, the gear 126 rotates on the rack 119, the telescopic rack 118 is pushed to extend out until the bolt 120 moves to a position corresponding to the locking groove 129, the linkage motor 133 stops rotating, and at this time, the telescopic rack 118 extends out of the pedal rack 103.

When the seat cushion 101 needs to be lifted out, the clutch push rod 138 is pushed out, the clutch lug 140 is clamped in the clutch groove 141, the driving wheel 132 drives the clutch push rod 138 to rotate, the threaded rod 136 rotates, the seat cushion column 135 is lifted through the matching of the external thread 144 and the internal thread 143, when the seat cushion 101 is lifted to a position comfortable for a person, the clutch push rod 138 is retracted, the clutch lug 140 is separated from the clutch groove 141, and the lifting of the seat cushion 101 is completed.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although the seat cushion 101, the seat cushion frame 102, the foot rest frame 103, the handle bar 104, the front axle 105, the axle frame 106, the foot support 107, the foot pedal 108, the return spring 109, the stopper groove 110, the spring connecting block 111, the axle push rod 112, the axle extending post 113, the rotation connecting post 114, the rotation connecting seat 115, the first stopper 116, the second stopper 117, the expansion bracket 118, the rack bar 119, the latch tongue 120, the lock spring 121, the transmission bar 122, the lock stopper 123, the foot support post 124, the unlock cam 125, the gear 126, the expansion rotation post 127, the driven wheel 128, the lock groove 129, the slope groove 130, the unlock slope block 131, the driving wheel 132, the link motor 133, the transmission belt 134, the seat cushion post 135, the threaded rod 136, the fixing ring 137, the clutch push rod 138, the fixing post, the clutch projection 140, the clutch recess 141, the slide block 142, the internal thread 143, the external thread 144, the slide groove 145, the chain 146, the transmission main sprocket 147, the front axle 105, the axle frame 106, the foot support 107, the lock bar 120, the lock bracket, the seat bracket, the lock bracket, the seat, Adjusting spring 148, adjusting sprocket 149, adjusting block 150, drive slave sprocket 151, front extension 950, foot latch 951, telescoping linkage 952, and the like, but does not preclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention and they are to be interpreted as any additional limitation which is not in accordance with the spirit of the present invention.

Claims

1. The bicycle capable of stretching and retracting in a linkage manner is characterized by comprising a handlebar (104), a front axle (105) is fixedly connected to the center of the handlebar (104), an axle frame (106) is connected to the outer side of the front axle (105) in a rotating fit manner, a pedal frame (103) is connected to one end of the axle frame (106) in a sliding fit manner, a front stretching device (950) which enables the pedal frame (103) to be close to or far away from the front axle (105) through the rotation of the front axle (105) is arranged in the axle frame (106), pedals (108) are rotatably arranged on two sides of the pedal frame (103), a telescopic frame (118) is connected to the inside of the pedal frame (103) in a sliding fit manner, a pedal locking device (951) which locks and separates the pedal frame (103) and the telescopic frame (118) is arranged in the telescopic frame (118), a pedal (107) is arranged on one side of the pedal locking device (951), the utility model discloses a cushion (102) and cushion (118) are characterized in that expansion bracket (118) one side sets firmly cushion frame (102), cushion (101) are provided with to cushion frame (102) upper end, expansion bracket (118) with cushion frame (102) inner space intercommunication, expansion bracket (118) with inside being provided with of cushion frame (102) makes simultaneously cushion (101) go up and down and expansion bracket (118) are in flexible link gear (952) in pedal frame (103).

2. A bicycle capable of being telescopically coupled according to claim 1, wherein: preceding telescoping device (950) including the symmetry set firmly in the axletree extension post (113) of front axle (105) both sides, axletree extension post (113) outside is provided with rotates connecting seat (115), it has rotated spliced pole (114) to rotate connecting seat (115) internal setting, rotate spliced pole (114) with axletree extension post (113) are connected through the normal running fit, rotate connecting seat (115) one side and set firmly axletree push rod (112), both sides axletree push rod (112) with pedal frame (103) are not simultaneously offseted, axletree push rod (112) outside is provided with will pedal frame (103) draw back the spacing spring unit of playback.

3. A bicycle capable of being telescopically coupled according to claim 2, wherein: spacing spring unit sets firmly including the symmetry in spring connecting block (111) in axle frame (106), be provided with spacing groove (110) in spring connecting block (111), spacing groove (110) with axletree push rod (112) push rod sliding fit connects, spring connecting block (111) with through playback spring (109) elastic connection between pedal frame (103), pedal frame (103) one end has set firmly first stopper (116), first stopper (116) with axle frame (106) are connected through sliding fit, axle frame (106) one end has set firmly second stopper (117), second stopper (117) with pedal frame (103) are connected through sliding fit, first stopper (116) with second stopper (117) restrict jointly the removal of pedal frame (103).

4. A bicycle capable of being telescopically coupled according to claim 1, wherein: the foot support clamping and locking device (951) comprises a foot support column (124) fixedly arranged at one end of a foot support (107), the foot support column (124) is connected with the expansion bracket (118) in a rotating fit manner, one end of the foot support column (124) is fixedly provided with an unlocking cam (125), one side of the unlocking cam (125) is provided with a transmission strip (122), a lock limiting block (123) is fixedly arranged in the expansion bracket (118), the transmission strip (122) is connected with the lock limiting block (123) in a sliding fit manner, one end of the transmission strip (122) is fixedly provided with an unlocking inclined block (131), the expansion bracket (118) is internally and symmetrically provided with lock tongues (120), the lock tongues (120) are connected with the expansion bracket (118) in a sliding fit manner, the lock tongues (120) are elastically connected with each other through lock springs (121), inclined plane grooves (130) are arranged in the lock tongues (120), and the unlocking inclined plane grooves (130) are in sliding connection with the unlocking inclined blocks (131), the pedal frame (103) is symmetrically provided with a lock slot (129), and the lock slot (129) and the lock tongue (120) are correspondingly arranged in a clamping manner.

5. A bicycle capable of being telescopically coupled according to claim 1, wherein: the telescopic linkage device (952) comprises a linkage motor (133) fixedly arranged in the telescopic frame (118), one side of the linkage motor (133) is in power connection with a driving wheel (132), one end of the telescopic frame (118) is provided with a telescopic rotating column (127), the telescopic rotating column (127) is connected with the telescopic frame (118) in a rotating fit manner, a driven wheel (128) is fixedly arranged on the telescopic rotating column (127), a transmission belt (134) is wound between the driven wheel (128) and the driving wheel (132), the transmission belt (134) is in power connection with the driving wheel (132), a gear (126) is arranged on one side of the driven wheel (128), the gear (126) is fixedly connected with the telescopic rotating column (127), a rack (119) is fixedly arranged on one side of the pedal frame (103), and the rack (119) is meshed, and one end of the driving wheel (132) is provided with a cushion lifting component for controlling the cushion (101) to lift in a linkage manner.

6. A bicycle capable of being telescopically coupled according to claim 5, wherein: the cushion lifting assembly comprises a clutch groove (141) located at one end of the driving wheel (132), a clutch lug (140) is arranged on one side of the clutch groove (141), the clutch lug (140) and the clutch groove (141) are correspondingly meshed, a clutch push rod (138) is arranged at one end of the clutch lug (140), the clutch lug (140) is arranged at one end of a telescopic rod of the clutch push rod (138), a threaded rod (136) is fixedly arranged on one side of the clutch push rod (138), the outer side of the threaded rod (136) is connected with a fixing ring (137) in a rotating fit mode, the fixing ring (137) is fixedly connected with the cushion frame (102) through a fixing column (139), an external thread (144) is arranged on the outer side of the threaded rod (136), a cushion column (135) is arranged at one end of the threaded rod (136), and an internal thread (143) is arranged inside the cushion column (135), the external screw thread (144) with internal thread (143) cooperation is connected, cushion post (135) one side has set firmly sliding block (142), be provided with sliding tray (145) in cushion frame (102), sliding block (142) with sliding tray (145) are connected through sliding fit, cushion post (135) upper end has set firmly cushion (101), cushion frame (102) one side is provided with the flexible drive disk assembly of adaptation vehicle distance.

7. A bicycle capable of being telescopically coupled according to claim 6, wherein: the transmission part comprises an adjusting block (150) arranged on one side of the cushion frame (102), the adjusting block (150) is connected with the cushion frame (102) in a sliding fit mode, the cushion frame (102) is connected with the adjusting block (150) through an adjusting spring (148), an adjusting chain wheel (149) is arranged on one side of the adjusting block (150) in a rotating mode, a chain (146) is connected to the adjusting chain wheel (149) in a power mode, the chain (146) enables the adjusting chain wheel (149), a transmission main chain wheel (147) and a transmission driven chain wheel (151) to be connected in a power mode, the transmission main chain wheel (147) is fixedly arranged on one side of the pedal plate (108), and the transmission driven chain wheel (151) is fixedly connected with a rear wheel of a bicycle.