CN210338172U

CN210338172U - Foldable bicycle

Info

Publication number: CN210338172U
Application number: CN201920144939.3U
Authority: CN
Inventors: 陈千
Original assignee: Guangxi Rui Qi Feng New Materials Co ltd
Current assignee: Guangxi Rui Qi Feng New Materials Co ltd
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2020-04-17
Anticipated expiration: 2029-01-28

Abstract

The utility model provides a foldable bicycle, which comprises a front frame, a rear frame, an unlocking structure, a lock catch structure, a front wheel, a rear wheel and a driving mechanism, wherein the front frame comprises a main lever, a switching piece, a mounting structure, a front damping structure and a connecting structure; the rear frame comprises a rear disc, a connecting structure and a stabilizing structure, the rear disc is rotatably sleeved on the pivot shaft, the locking structure is mounted on the rear disc and is buckled with the limiting shaft, and the unlocking structure is mounted on the rear disc, is buckled with the locking structure and can be separated from the locking structure when being driven; linking structure one end rotatably installs the rear end at the back dish, and the rear wheel is installed to the other end, stable structure install the back dish with between the linking structure, actuating mechanism installs on the back dish.

Description

Foldable bicycle

[ technical field ] A method for producing a semiconductor device

The utility model relates to a bicycle technical field, concretely relates to collapsible bicycle.

[ background of the invention ]

The bicycle is a common tool for riding instead of walk, which can facilitate people to go out and is more environment-friendly. However, most bicycles are inconvenient to carry, have an excessively large volume, or are excessively heavy, and thus portable bicycles, which are smaller in size and convenient to carry, have become a new trend. The user can fold the portable bicycle and carry the portable bicycle at any time when taking a bus or a subway; and the portable bicycle can be placed in the motor vehicle in a smaller occupied space. However, the existing portable bicycle has a complex structure and is inconvenient to fold, in addition, the shock absorption effect of the bicycle is poor due to the fact that a front wheel does not have a shock absorption structure, and secondly, the stability of stress points is poor due to the fact that the bicycle is foldable.

[ Utility model ] content

In view of the above, there is a need for a foldable bicycle that can unlock the bicycle, is convenient to fold, and has excellent shock-absorbing effect and stability.

In order to achieve the above purpose, the utility model adopts the technical proposal that: a foldable bicycle comprises a front frame, a rear frame, an unlocking structure, a locking structure, a front wheel, a rear wheel and a driving mechanism,

the front frame comprises a main lever, an adapter piece, a mounting structure, a front shock absorption structure and a connecting structure, wherein the main lever is mounted on the adapter piece and is provided with a limiting shaft and a pivot shaft;

the rear frame comprises a rear disc, a connecting structure and a stabilizing structure, the rear disc is rotatably sleeved on the pivot shaft, the locking structure is mounted on the rear disc and is buckled with the limiting shaft to prevent the main lever from rotating, and the unlocking structure is mounted on the rear disc and is buckled with the locking structure and can be separated from the locking structure when being driven;

linking up structure one end and rotatably installing the rear end of back plate, install the other end the rear wheel, stable structure is including connecting rod, first locating part and second locating part, first locating part is installed on the back plate, the second setting element is installed linking up structurally, the both ends of connecting rod are cup jointed respectively first locating part reaches the second setting element, it is relative that the connecting rod can receive the drive first locating part reaches the second locating part rotates, the acute angle is personally submitted with the level to the connecting rod, first locating part position is higher than second locating part position, actuating mechanism installs the back plate, and be used for the drive the rear wheel rotates.

Further, leading shock-absorbing structure includes shock attenuation elastic component, first setting element and second setting element, first setting element is installed mounting structure is last, the second setting element is installed connection structure is last, and with first setting element cup joints, shock attenuation elastic component cover is in on first setting element and the second setting element, and the elasticity centre gripping is in between first setting element and the second setting element, the acute angle is personally submitted with the level to the center pin of shock attenuation elastic component, and the orientation the direction slope of bicycle walking.

Furthermore, the first positioning element comprises a first fixing part and a positioning rod arranged on the first fixing part, and the first fixing part is arranged on the mounting structure.

Further, the communication hole, the first limiting rod and the second limiting rod all have the same central axis.

Further, the back plate is provided with even piece, the linking structure is including linking up the piece, first locating part is still including first grafting portion, second locating part is still including second grafting portion, first grafting portion is installed link on the piece, second grafting portion is installed link on the piece.

Furthermore, the first sleeving part comprises a first connecting shaft and a first ferrule, the first connecting shaft is mounted on the connecting block, the first ferrule is sleeved on the first connecting shaft, and one end of the first limiting rod is arranged on the first ferrule; the second sleeving part comprises a second connecting shaft and a second ferrule, the second connecting shaft is mounted on the connecting block, the second ferrule is sleeved on the second connecting shaft, and one end of the second limiting rod is arranged on the second ferrule.

Furthermore, the connecting structure comprises two connecting plates, one ends of the two connecting plates are rotatably arranged on the rear disc, and the other ends of the two connecting plates are provided with the rear wheels.

Further, the joint block is installed between the two joint plates.

Furthermore, the periphery of the communication rod is provided with a plurality of anti-skidding lines.

The utility model discloses following beneficial effect has:

the utility model discloses an unlocking structure unblock hasp structure, alright folding the bicycle, in addition, be provided with leading shock-absorbing structure on the front truck, can play the shock attenuation effect, secondly, be provided with stable structure on the back truck, stability that can effectual regulation stress point.

[ description of the drawings ]

Fig. 1 is a perspective view of the bicycle of the present invention.

Fig. 2 is an exploded perspective view of the main bar and back plate of fig. 1.

Fig. 3 is an exploded perspective view of the mounting structure, the front shock absorbing structure and the connecting structure of fig. 1.

Figure 4 is an exploded perspective view of the front shock absorbing structure of figure 3.

Fig. 5 is another perspective view of fig. 2.

Fig. 6 is an exploded perspective view of the back plate of fig. 1.

Fig. 7 is an exploded perspective view of the positioning block of fig. 6.

Fig. 8 is a perspective assembly view of the positioning block of fig. 7.

Fig. 9 is an exploded perspective view of the unlocking mechanism of fig. 6.

Fig. 10 is an exploded perspective view of the latch structure of fig. 6.

Fig. 11 is an exploded perspective view of the snap structure of fig. 6.

Fig. 12 is an exploded perspective view of the stabilizing structure and the engaging structure of fig. 1.

Description of the main elements

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

[ detailed description ] embodiments

In order to make the technical field person understand the scheme of the present invention better, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical scheme in the embodiments of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "first," "second," and the like in the description and in the claims, and in the drawings described above, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The embodiment of the utility model provides a foldable bicycle, which comprises a front frame, a rear frame, an unlocking structure, a locking structure, a front wheel, a rear wheel and a driving mechanism,

In order to make the technical field person understand the scheme of the present invention better, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical scheme in the embodiments of the present invention.

Referring to fig. 1-4 and 9-11, in one embodiment of the present invention, a bicycle includes a front frame 10, a rear frame 20, an unlocking structure 30, a locking structure 40, a locking structure 50, a front wheel 60, a rear wheel 70, a seat 80 and a driving mechanism 90.

The front frame 10 is rotatably connected with the rear frame 20 and comprises a main bar 11, an adapter 12, a supporting rod 13, a direction rod 14, a mounting structure 15, a front shock absorption structure 16 and a connecting structure 17, wherein one end of the main bar 11 is detachably mounted on the adapter 12 through common methods such as screw locking and the like, the other end of the main bar corresponds to the rear frame 20 and is provided with an abdicating notch 110 (see fig. 2), a limiting shaft 111 and a pivot shaft 112 are arranged at the abdicating notch 110 of the main bar 11, the limiting shaft 111 is positioned above the pivot shaft 112, in the embodiment, the limiting shaft 111 is parallel to the central shaft of the pivot shaft 112, the limiting shaft 111 and the pivot shaft 112 are respectively provided with threaded holes at two ends and are detachably mounted on the main bar 11 through threaded holes and screw locking and the detachable manner. In addition, an operation portion 114 is further disposed on a top wall of the main bar 11, and the operation portion 114 is configured to drive the front frame 10 to rotate relative to the rear frame 20.

The lower end of the supporting rod 13 is clamped on the adapter 12, the upper end of the supporting rod is connected with the direction rod 14 in a cross mode, the direction rod 14 is used for controlling the direction of the bicycle, specifically, the adapter 12 is provided with clamping holes corresponding to the supporting rod 13, the supporting rod 13 is clamped in the clamping holes, the upper end of the towing rod 13 is provided with fixing holes for detachably mounting the direction rod 14, and in other embodiments, the direction rod 14 can be fixed with the towing rod 13 in a cross mode through welding and the like.

Referring to fig. 3-4, the mounting structure 15 is mounted on the adaptor 12, in this embodiment, the mounting structure 15 includes a mounting member 151 and a mounting shaft 152, the mounting member 151 is disposed on an outer periphery of the mounting shaft 152, and can be locked on the mounting shaft 152 by being clamped into the mounting member 151 by screws or the like, so as to prevent the mounting member 151 from being separated from the mounting shaft 151, and in another embodiment, the mounting member 151 can be welded on the mounting shaft 152. The upper end of the mounting member 151 is provided with two first locking rings 1511 extending outwards, and the two first locking rings 1511 are arranged in parallel.

The connecting structure 17 is mounted on the mounting structure 15, and specifically, the connecting structure 17 includes two connecting plates 171, the upper ends of the two connecting plates 171 are mounted on the lower end of the mounting member 151, and the lower end is mounted with the front wheel 60, and can rotate to drive the bicycle to move. Two second locking rings 1711 extend outwards from the upper end of the connecting plate 171. In this embodiment, the two connecting plates 171 are disposed in parallel, and the two second locking rings 1711 are disposed in parallel.

Leading shock-absorbing structure 16 includes shock attenuation elastic component 161, first setting element 162 and second setting element 163, first setting element 162 is installed on mounting structure 15, second setting element 163 is installed on connection structure 17, shock attenuation elastic component 161 cover first setting element 162 reaches on the second setting element 163 to the elasticity centre gripping is in first setting element 162 reaches between the second setting element 163, the central axis and the level of shock attenuation elastic component 161 are the acute angle, and the orientation the direction slope of bicycle walking. In this embodiment, the shock-absorbing elastic member 161 may be a spring.

Specifically, the first positioning member 162 includes a first fixing portion 164 and a positioning rod 165 disposed on the first fixing portion 164, and the first fixing portion 164 is mounted on the mounting structure 15 and has a first positioning ring 1641 disposed on an outer periphery thereof. Furthermore, the first fixing portion 164 includes a first fixing shaft 1642 and a fixing block 1643, the first fixing shaft 1642 is mounted on the two first locking rings 1511 by a conventional method, such as a screw and a screw hole, the fixing block 1643 is sleeved on the first fixing shaft 1642, and one end of the positioning rod 165 is disposed on the fixing block 1643.

The second positioning member 163 includes a second fixing portion 166 and a sleeve 167 disposed on the second fixing portion 166, the second fixing portion 166 is fixed on the connecting structure 17, the sleeve 167 is disposed on the second fixing portion 166 and accommodates one end of the positioning rod 165, a second positioning ring 1671 is disposed on the periphery of the sleeve, the elastic damping member 161 is sleeved on the positioning rod 162 and the periphery of the sleeve 167, and the elastic damping member is clamped between the first positioning ring 1641 and the second positioning ring 1671. In addition, the socket 167 is provided with an external thread, and the second positioning ring 1671 is provided with an internal thread and movably mounted on the socket 167 by the matching of the internal thread and the external thread.

The second fixing portion 166 includes a second fixing shaft 1661, the second fixing shaft 1661 is mounted on the two second locking rings 1711 through a common method, such as a screw and a screw hole, one end of the sleeve 167 is sleeved on the second fixing shaft 1661, and the other end of the sleeve accommodates the positioning rod 165. Specifically, the first fixing shaft 1642 and the second fixing shaft 1611 have substantially the same structure, and include a shaft body, a shaft sleeve, and two limiting rings, where the shaft body is installed on the corresponding locking ring, the shaft sleeve is fixed on the shaft body through a matching manner of an internal thread and an external thread, the two limiting rings are respectively sleeved on the shaft body and respectively located at two sides of the shaft sleeve to prevent the shaft sleeve from moving, and the sleeve 167 is sleeved on the shaft sleeve.

Referring to fig. 5 to 8, the rear frame 20 includes a rear disc 21, a connecting structure 22 and a stabilizing structure 29, the rear disc 21 is sleeved on the pivot shaft 112, and a portion of the rear disc 21 is located at the abdicating notch 110, specifically, the rear disc 21 includes a positioning block 23, a first disc 24 and a second disc 25, the positioning block 23 is located between the first disc 24 and the second disc 25 and detachably fixed to the first disc 24 and the second disc 25, respectively, in this embodiment, the positioning block 23 is provided with a plurality of screw holes, and the first disc 24 and the second disc 25 are also provided with a plurality of screw holes, and the positioning block 23 is detachably fixed to the first disc 24 and the second disc 25 by locking fixing members such as screws into the screw holes.

The locating piece 23 corresponds pivot axle 112 and has seted up the cover that runs through locating piece 23 changes hole 231, be provided with sleeve 232 in the cover changes hole 231, sleeve 232 cover pivot axle 112 is last and is located abdication breach 110 department, locating piece 23 be provided with two collars 233, and be close to two collars 233 are provided with card axle 234, the lateral wall of locating piece 23 still is provided with two solid fixed rings 235, first groove 236 and the second groove 237 that ends is stopped has still been seted up to the lateral wall of locating piece 23. In this embodiment, the two mounting rings 233 are formed by extending outward from the side wall of the positioning block 23, and the fastening shaft 234 is fixed on the positioning block 23 by welding or screw fastening.

In this embodiment, the central axes of the rotation hole 231, the first stop groove 236 and the second stop groove 237 are all perpendicular to the first tray 24 and the second tray 25, and the rotation hole 231, the first stop groove 236 and the second stop groove 237 are located at three vertex angles of a triangle; the two mounting rings 233 and the two fixing rings 235 are arranged in parallel and are respectively parallel to the first tray 24 and the second tray 25, the two mounting rings 233 and the two fixing rings 235 are located on two sides of the rotating hole 231, and hole axes of the two mounting rings 233 and hole axes of the two fixing rings 235 are parallel to the clamping shaft 234.

First disk body 24 reaches the installation has been seted up in the alignment of second disk body 25 front end through-hole 241 of pivotal axis 112, the rear end has been seted up and has been dodged breach 242, in addition, first disk body 24 reaches the preceding terminal surface of second disk body 25 corresponds spacing axle 111 is provided with first groove 243 and the second groove 244 of stepping down, and first groove 243 of stepping down reaches be provided with guide surface 245 between the second groove 244 of stepping down, first groove 243 of stepping down reaches the center pin of second groove 244 is parallel, guide surface 245 is the arc.

Further, a first connecting block 26 and a second connecting block 27 are further installed between the first tray 24 and the second tray 25, and the first connecting block 26 and the second connecting block 27 are also detachably fixed with the first tray 24 and the second tray 25 by a common method, such as screw locking, to enhance the stability of the first tray 26 and the second tray 27.

In this embodiment, referring to fig. 6, the sleeve 232 is further sleeved with two spacers 28, the two spacers 28 are respectively located at the outer sides of the first tray body 24 and the second tray body 25 and located at the abdicating notch 110 of the main rod 11, in addition, in order to cooperatively install the limiting shaft 111, the two spacers 28 are respectively provided with an arc-shaped accommodating notch 281, and when the front frame 10 needs to be rotated, the two spacers 28 can rotate along with the limiting shaft 111.

The unlocking structure 30 is rotatably installed between the first tray body 24 and the second tray body 25, specifically, the unlocking structure 30 comprises an unlocking block 31, the unlocking block 31 is rotatably installed between the first tray body 24 and the second tray body 25, further, the unlocking structure 30 further comprises an unlocking shaft 32 and an unlocking torsion spring 33, the first tray body 24 and the second tray body 25 correspond to the unlocking shaft 32 and are provided with grooves, and two opposite ends of the unlocking shaft 32 are respectively clamped in the grooves of the first tray body 24 and the second tray body 25, so as to be fixed between the first tray body 24 and the second tray body 25.

Referring to fig. 9, the unlocking block 31 is provided with a shaft hole 311 and a through hole 312, and is rotatably sleeved on the unlocking shaft 32 through the shaft hole 311, the unlocking torsion spring 33 is sleeved on the unlocking shaft 32, is located in the through hole 312, and is clamped on the unlocking block 31 and the first connecting block 26, in this embodiment, the shaft hole 311 penetrates through the cross section of the unlocking block 31, the through hole 312 intersects with the shaft hole 311, and penetrates through the shaft hole 311, and in addition, the surface of the unlocking block 31 is provided with an anti-slip strip 323.

In this embodiment, the unlocking torsion spring 33 includes an unlocking torsion spring body, a first unlocking leg and a second unlocking leg, the unlocking torsion spring body is sleeved on the unlocking shaft 32 and is accommodated in the through hole 312, the first unlocking leg is clamped on the unlocking block 31, and the second unlocking leg is clamped on the first connecting block 26.

Referring to fig. 10, the locking structure 40 is rotatably mounted on the positioning block 23, specifically, the locking structure 40 includes a hook 41, a locking member 42 and a locking torsion spring 43, the hook 41 is rotatably connected to the locking member 42 and is locked on the positioning block 23, the locking member 42 is rotatably mounted on the positioning block 23, the locking torsion spring 43 is mounted on the locking member 42 and is used for driving the locking member 42 to rotate, further, the hook 41 includes a locking portion 411 and a hanging portion 412, an upper end of the hanging portion 412 is rotatably mounted on the locking member 42, a lower end of the hanging portion 412 is provided with the locking portion 411, in addition, a side of the hanging portion 412 opposite to the locking portion 411 is provided with a locking groove 413 matched with the unlocking structure 30, and more specifically, an upper end of the hanging portion 412 is provided with a hanging hole.

The locking member 42 includes a rotating block 421 and a rotating shaft 423, the rotating shaft 423 is locked in the two mounting rings 233 of the positioning block 23 and is located between the first disc 23 and the second disc 24, and the rotating block 421 is sleeved on the rotating shaft 423. Specifically, the rotating block 421 includes a rotating plate 424, one end of the rotating plate 424 is provided with a locking hook 425, the other end of the rotating plate 424 is provided with an installation notch 426 corresponding to the hook 41, and two sidewalls of the installation notch 426 are provided with installation holes corresponding to the suspension holes, so that the suspension shaft 414 can pass through the installation holes and the suspension holes to install the hook 41 on the locking element 42,

furthermore, two side edges 427 are respectively arranged on two opposite sides of the rotating plate 424, the two side edges 427 are correspondingly provided with rotating holes 4271, the rotating shaft 423 can pass through the two mounting rings 233 and the rotating holes 4271 of the two side edges 427 and is clamped between the first disk body 24 and the second disk body 25, the rotating block 421 is rotatably mounted on the positioning block 23, and at this time, the two side edges 427 are positioned on the inner sides of the two mounting rings 233; the locking hook 425 is formed by bending and extending one end of the rotating plate 424, and is provided with a locking surface 4251 engaged with the limiting shaft 111, and the locking surface 4251 is arc-shaped.

In order to enable the locking member 42 to automatically return, the locking torsion spring 43 is fitted over the rotating shaft 423 and is locked to the rotating block 421, so that a returning force can be generated. Further, the latch torsion spring 43 is located between the two side edges 427.

Referring to fig. 11, the fastening structure 50 is rotatably mounted on the positioning block 23, and specifically includes a fastening block 51, a fastening torsion spring 52 and a fastening shaft 53, the fastening shaft 53 is fastened on the positioning block 23 and clamped between the first tray 24 and the second tray, the fastening block 51 is sleeved on the fastening shaft 53, and the fastening torsion spring 52 is sleeved on the fastening shaft 53 and fastened on the positioning block 23.

Specifically, the buckling block 51 is provided with two clamping rings 512 corresponding to the clamping shaft 53, a clamping hole 511 for installing the clamping shaft 53 is formed between the two clamping rings 512, the buckling block 51 is further provided with a buckling part 513, the buckling part 513 is provided with a buckling surface 5131, in this embodiment, the two clamping rings 512 are arranged in parallel, and the buckling surface 5131 is arc-shaped. The shaft 53 is clamped on the two fixing rings 235 and the two clamping rings 512 of the positioning block 23, the two clamping rings 512 are located on the inner sides of the two fixing rings 235, in addition, in order to prevent the shaft 53 from being separated from the two fixing rings 235 and the two clamping rings 512, two ends of the shaft 53 respectively support against the first disc body 24 and the second disc body 25, the buckle torsion spring 52 is sleeved on the shaft 53 and located in the buckle hole 511 and clamped on the buckle block 51 and the positioning block 23 so as to provide elastic restoring force for the buckle block 51.

Referring to fig. 1 and 12, the rear ends of the first tray 24 and the second tray 25 are further provided with a connecting block 251, the connecting block 251 is detachably mounted on the first tray 24 and the second tray 25 by screws, and the like, and specifically, the connecting block 251 includes two connecting plates, and the two connecting plates are arranged in parallel and fixed together by screws and the like.

The engaging structure 22 has one end rotatably mounted to the rear ends of the first tray 24 and the second tray 25 and the other end mounted to the rear wheel 70. Specifically, the connecting structure 22 includes a connecting block 221 and two connecting plates 222, the two connecting plates 222 are respectively installed on two sides of the connecting block 221 through screw locking, and the like, and the connecting block 221 is located in the middle of the two connecting plates 222 and is provided with two convex rings 2221.

Stable structure 29 is including connecting rod 291, first locating part 292 and second locating part 293, first locating part 292 is installed on even piece 251 on the back dish 21, second setting element 293 is installed on linking piece 221 of linking structure 22, the both ends of connecting rod 291 cup joint respectively first locating part 292 with second setting element 293, connecting rod 291 can be relative when receiving the drive first locating part 292 with second setting element 293 rotates, connecting rod 291 is the acute angle with the level, first locating part 292 position is higher than second locating part 293 position.

Specifically, the connection rod 291 is provided with a communication hole 2911, an inner wall of the communication hole 2911 is provided with a plurality of internal threads, and an outer circumference is provided with a plurality of anti-slip threads.

The first limiting part 292 comprises a first limiting rod 2921 and a first sleeving part 2922, the first sleeving part 2922 is installed on the connecting block 251 and comprises a first connecting shaft 2923 and a first collar 2924, the first connecting shaft 2923 is installed on the connecting block 251 through screw locking and the like, the first collar 2924 is sleeved on the first connecting shaft 2923 through a shaft and hole matching mode, one end of the first limiting rod 2921 is arranged on the first collar 2924 through welding or an integrated mode, the other end of the first limiting rod points to the second limiting part 293, and in addition, an external thread is arranged on the periphery of the first limiting rod 2921.

The second position-limiting member 293 includes a second position-limiting rod 2931 and a second engaging portion 2932, the second engaging portion 2932 is mounted on the two convex rings 2221 of the engaging block 221, and includes a second coupling shaft 2933 and a second collar 2934, the second coupling shaft is mounted on the two convex rings 2221 of the engaging block 221 by means of screw locking, the second collar 2934 is fitted on the second coupling shaft 2933 by means of shaft-hole fitting, one end of the second position-limiting rod 2931 is disposed on the second collar 2934 by means of welding or integral molding, the other end of the second position-limiting rod is directed to the first position-limiting member 292, an external thread is disposed on the outer periphery of the second position-limiting rod 2931, the connecting rod 291 is fitted with the first position-limiting rod 2921 and the second position-limiting rod 2931 by means of the communicating hole 2911, and the lengths of the first position-limiting rod 2921 and the second position-limiting rod 2931 in the communicating rod 291 can be adjusted by means of the external thread and the internal thread fitting, the unfolding angle of the engaging structure 22 relative to the rear plate 21 is adjusted, so that the stability of the bicycle can be controlled at a stress point.

In this embodiment, the communication hole 291, the first stopper rod 2921, and the second stopper rod 2931 all have the same central axis.

The seat 80 is installed at the upper ends of the first tray 24 and the second tray 25, specifically, an installation part 81 is detachably installed on the first tray 24 and the second tray 25 through a common method, such as screw locking, etc., the upper end of the installation part 81 is provided with an installation hole, and the seat 81 is detachably installed on the installation part 81 through a support rod 82.

With reference to fig. 1, the driving mechanism 90 is mounted on the first tray 24 and the second tray 25 for driving the rear wheel 70 to rotate. Specifically, the driving mechanism 90 may include a pedal plate 91, a driving gear 92, a driven gear 93 and a hinge 94, the pedal plate 91 is mounted on the first tray 24 and the second tray 25, the driving gear 92 is mounted on the pedal plate 91, the driven gear 93 is mounted on the rear wheel 70, and the hinge 94 connects the driving gear 92 and the driven gear 93, so that when the pedal plate 91 is driven to rotate relative to the first tray 24 and the second tray 25, the driving gear 93 is driven to rotate, the driving gear 92 drives the driven gear 93 to rotate through the hinge 94, and the rear wheel 70 rotates along with the driven gear 93, thereby driving the bicycle to walk.

In the present invention, the front frame 10 can rotate between the extended position and the retracted position along with the pivot shaft 112 relative to the rear frame 20, when the front frame 10 is located at the extended position, the limiting shaft 111 is located in the first stopping groove 236, and the locking structure 40 is fastened to the limiting shaft 111; when the front frame 10 is located at the retracted position, the locking structure 40 is disengaged from the limiting shaft 111, the limiting shaft 111 is located in the second stop groove 237, and the fastening structure 50 is fastened to the limiting shaft 111; the unlocking structure 30 is buckled with the locking structure 40, and the locking structure 30 can be separated from the limiting shaft 111 when the unlocking structure 30 is driven.

Specifically, when the bicycle is in the unfolded state, the bicycle can be used, and at this time, the locking hook 425 of the locking piece 42 of the locking structure 40 is locked with the limiting shaft 111, and the locking surface 4251 is attached to the limiting shaft 111 for preventing the front frame 10 from rotating relative to the rear frame 20; the engaging portion 411 of the hook 41 is engaged with the engaging shaft 234 to prevent the locking hook 425 from disengaging from the limiting shaft 111, the unlocking block 31 of the unlocking structure 30 is engaged with the engaging groove 413 of the hook 41 of the locking structure 40 to prevent the engaging portion 411 from disengaging from the engaging shaft 234, and the unlocking torsion spring 33 elastically deforms to press the unlocking block 31 to prevent the unlocking block 31 from disengaging from the engaging groove 413;

when the bicycle needs to be put away, the operating portion 114 is driven to slightly lift the bicycle, the unlocking block 31 is driven to rotate, the unlocking block 31 is separated from the clamping groove 413, at this time, the clamping hook 41 no longer applies force to the locking piece 42, the locking torsion spring 43 of the locking structure 40 elastically returns, so that the locking piece 42 is rotated to separate the locking hook 425 from the limiting shaft 111, at this time, the front frame 10 can be rotated relative to the rear frame 20, the limiting shaft 111 is separated from the first stop groove 236 and slides towards the second stop groove 237 along the guide surface 245, in this process, as the locking structure 50 is mounted on the positioning block 23 through the locking torsion spring 52, the locking portion 513 of the locking block 51 of the locking structure 50 is pushed by the limiting shaft 111 until the limiting shaft 111 is clamped in the second stop groove 237, the buckle torsion spring 52 elastically returns to rotate the buckle block 51, so that the buckle part 513 is buckled with the limiting shaft 111, the folding of the bicycle is completed, and after the folding, the space is reduced, so that the bicycle can be conveniently carried.

The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.

Claims

1. The utility model provides a collapsible bicycle, including front wheel, rear wheel and actuating mechanism, its characterized in that: the foldable bicycle also comprises a front frame, a rear frame, an unlocking structure and a locking structure,

the linkage structure is characterized in that one end of the linkage structure is rotatably arranged at the rear end of the rear disc, the other end of the linkage structure is provided with the rear wheel, the stabilizing structure comprises a communication rod, a first limiting part and a second limiting part, the first limiting part is arranged on the rear disc, and the second limiting part is arranged on the rear discLimit ofThe position piece is arranged on the connecting structure, and the two ends of the connecting rod are respectively sleeved with the first endsLimit ofA bit and the secondLimit ofA position member, the communication rod being capable of opposing the first when drivenLimit ofA bit and the secondLimit ofThe position member rotates, the connecting rod forms an acute angle with the horizontal plane, and the first connecting rod is connected with the second connecting rodLimit ofThe position of the position part is higher than that of the second limiting part, and the driving mechanism is installed on the rear disc and used for driving the rear wheel to rotate.

2. The foldable bicycle of claim 1, wherein: leading shock-absorbing structure includes shock attenuation elastic component, first setting element and second setting element, first setting element is installed mounting structure is last, the second setting element is installed connection structure is last, and with first setting element cup joints, shock attenuation elastic component cover is in on first setting element and the second setting element to the elasticity centre gripping is in between first setting element and the second setting element, the acute angle is personally submitted with the level to shock attenuation elastic component's center pin, and the orientation the direction slope of bicycle walking.

3. A foldable bicycle according to claim 2, wherein: the first positioning piece comprises a first fixing part and a positioning rod arranged on the first fixing part, and the first fixing part is arranged on the mounting structure.

4. The foldable bicycle of claim 1, wherein: the utility model discloses a safety device, including first locating part, second locating part, first gag lever post, second gag lever post, first gag lever post and the external screw thread has been seted up respectively to the periphery of second gag lever post, the intercommunication pole is provided with the intercommunicating pore, the inner wall of intercommunicating pore is provided with a plurality of internal threads, first locating part is including first gag lever post, second locating part is including the second gag lever post, first gag lever post reaches the external screw thread has been seted up respectively to.

5. The foldable bicycle of claim 4, wherein: the communicating hole, the first limiting rod and the second limiting rod all have the same central shaft.

6. The foldable bicycle of claim 4, wherein: the back plate is provided with even piece, the linking structure is including linking up the piece, first locating part is still including first grafting portion, second locating part is still including second grafting portion, first grafting portion is installed link on the piece, second grafting portion installation link on the piece.

7. The foldable bicycle of claim 6, wherein: the first sleeving part comprises a first connecting shaft and a first ferrule, the first connecting shaft is arranged on the connecting block, the first ferrule is sleeved on the first connecting shaft, and one end of the first limiting rod is arranged on the first ferrule; the second sleeving part comprises a second connecting shaft and a second ferrule, the second connecting shaft is mounted on the connecting block, the second ferrule is sleeved on the second connecting shaft, and one end of the second limiting rod is arranged on the second ferrule.

8. The foldable bicycle of claim 7, wherein: the connecting structure comprises two connecting plates, one ends of the two connecting plates are rotatably arranged on the rear disc, and the other ends of the two connecting plates are provided with the rear wheels.

9. The foldable bicycle of claim 8, wherein: the connecting block is arranged between the two connecting plates.

10. The foldable bicycle of claim 9, wherein: the periphery of the communication rod is provided with a plurality of anti-skidding lines.