CN219467914U - Folding bicycle - Google Patents

Abstract

The utility model proposes a folding bicycle comprising: a front wheel bracket, a rear wheel bracket and a driving fixing frame; the front wheel support and the rear wheel support are connected with each other through a sleeve and a mortise mechanism, the sleeve is used for locking the front wheel support and the rear wheel support, and the front wheel support and the rear wheel support can be unlocked after the sleeve is pulled out from the mortise mechanism, so that the front wheel support and the rear wheel support can be rotated and folded; the rear wheel support is connected with the driving fixing frame, and the driving fixing frame is connected with the rear wheel. According to the utility model, the central shaft is rotated and folded, and is locked by utilizing the mortise and tenon structure, so that the structure is simpler and lighter, and the stress safety performance is higher.

Description

Folding bicycle

Technical Field

The utility model belongs to the technical field of bicycles, and relates to a folding bicycle.

Background

The folding bicycles on the market at present have the following defects:

1. the volume of the folded bicycle is too large, namely the size of certain parts of the bicycle still is particularly outstanding after being folded, and the folded bicycle cannot be completely contracted, so that the folding space cannot be fully utilized.

2. The existing folding bicycle adopts the cross beam to fold, so that the cross beam and the lock catch thereof are made of high-strength materials, the bicycle is light in weight, but the weight is still heavy, and the bicycle is inconvenient to carry; either the wheels are too small or at the cost of comfort, the function of easy commute cannot be met.

3. The distance of the shock-absorbing structure of the existing bicycle is too long, the shock-absorbing structure is complex, and the structure cannot meet the requirements of light weight and compactness.

4. Users of different ages need to purchase bicycles or electric bicycles of different sizes and different functions.

5. The bicycle is one of the most commonly used living goods in life, the demand is huge, and the bicycle cannot be used universally due to single function, so that a great amount of material resources are wasted; in addition, many bicycles have short actual service cycle, but the design life is far longer than the actual service cycle, and the bicycle is not suitable for the current requirements of maximizing the utilization of resources and protecting the environment.

6. When the main control mechanism (i.e. the control panel) is in poor connection or fails, part of maintenance personnel can be charged to disassemble and maintain the main control mechanism in order to save time.

Disclosure of Invention

In order to solve the above-mentioned shortcomings of the prior art, an object of the present utility model is to provide a folding bicycle.

The utility model provides an electric folding bicycle, which comprises: a front wheel bracket, a rear wheel bracket and a driving fixing frame; wherein,,

the front wheel support and the rear wheel support are connected with each other through the sleeve and the mortise and tenon mechanism, the sleeve is used for locking the front wheel support and the rear wheel support, and the front wheel support and the rear wheel support can be unlocked after the sleeve is pulled out from the mortise and tenon mechanism, so that the front wheel support and the rear wheel support can be rotated and folded, and the folding effect is achieved;

the rear wheel support is connected with the driving fixing frame, and the driving fixing frame is connected with the rear wheel.

In the utility model, a dental disc mechanism and the center shaft rotating shaft are fixed on the center shaft base; the distance from the pedal spindle to the rear wheel is reduced by utilizing the concentric rotating shaft and the mortise and tenon structure, and the pedal spindle is provided with a first elastic fixed point to fix the pedal spindle in a folded state.

The utility model adopts the telescopic structure arranged on the front wheel bracket, and comprises a primary pipe and a secondary pipe; a plurality of primary pipe holes penetrating the primary pipe are formed in the primary pipe at intervals; the diode is provided with a diode hole for the pressing device to pass through; the primary pipe can be retracted into the diode and locked by the pressing device, the front-back telescopic structure mode is realized, the eccentric rotation stopping and fishbone-shaped tightening matching mode is adopted, and the reinforcing through pipe is arranged in the primary pipe hole to strengthen and realize adjustability. The pressing device passes through the diode hole to press the fishbone-shaped elastic gasket to generate pressing; the pressing device is connected with the pedal; the pedal can be lifted, the pedal is provided with a lifting and pressing device, and the first diode and the second diode are unlocked to enable the telescopic structure to realize telescopic operation; after the pedal is put down, the pressing device passes through the diode hole and the one-pole pipe hole to lock the one-pole diode.

Further, the pressing device is an integral part of a second elastic fixing point, and the second elastic fixing point comprises: the device comprises a retainer ring, an elastic fixing part, an elastic element, an elastic fixing main body, a locking nut, a tightening nut and a transverse locking mechanism; the tightening nut is used for pressing the fishbone-shaped elastic gasket through the diode hole; the retainer ring is arranged on the pedal, is fixed with the elastic fixing main body and is used for realizing connection between the pedal and the elastic fixing main body; the elastic fixing main body passes through the elastic fixing part, and the elastic element is sleeved outside the elastic fixing main body to realize the function of the elastic fixing main body; and through holes are formed in the elastic fixing part and the elastic fixing main body.

In the utility model, the side edge of the pedal is provided with a through hole for passing through a transverse locking mechanism of a second elastic fixed point; the transverse locking mechanism comprises a handle, an elastic element and a clamp spring; the clamping spring is arranged in the pedal and is connected with the handle, and the handle is sleeved with an elastic element which enables the handle to be kept in the pedal under the condition of no external force; the handle passes through the elastic fixing main body through hole to realize locking of a second elastic fixing point; when the transverse locking mechanism is pulled out, the pedal can be lifted up to bring out the main body of the elastic fixed point, and the first diode and the second diode are unlocked to enable the telescopic structure to realize the telescopic operation; after the pedal is put down, the elastic fixing main body passes through the diode hole and the one-pole pipe hole to realize one-pole and diode locking.

Preferably, after the pedal is lifted, the pedal can rotate around the elastic fixed point as an axis.

Preferably, the telescopic structure further comprises a fishbone-shaped elastic pad; the thickness is fit for bearing pressure distribution in the middle of the fishbone shape elastic gasket, and the transition gradually becomes thin to two sides is fit for closely laminating, and the fishbone shape elastic gasket side sets up the slot, presents the symmetrical characteristic in both ends, and it cooperates with the spacing arch that sets up in the diode mouth.

Preferably, a through hole is arranged at the top of the fishbone-shaped elastic gasket and is used for enabling the elastic fixing point main body to penetrate through the diode hole, the fishbone-shaped elastic gasket and the one-pole hole to achieve one-pole and diode locking.

In the utility model, the seat tube of the rear wheel bracket is sleeved with the shock absorbing mechanism. The shock absorbing mechanism is of a structure integrated with a bicycle sleeve in a mode of sleeving an elastomer; the lower end of the elastic body is connected with a limit ring on the seat tube, and the upper end of the elastic body is connected with the lower outer edge of the fixing hole of the driving fixing frame and compactly realizes shock absorption in a body fulcrum way. The wheel axle is fixedly matched with the motor fixed end to realize shock absorption displacement, and the shock absorption displacement has no influence on chain and sprocket drive.

Preferably, the seat tube of the rear wheel bracket passes through the fixing hole of the driving fixing frame, the connecting tube of the seat cushion is inserted into the seat tube, and the seat tube at the upper outer edge of the fixing hole of the driving fixing frame is provided with a quick-release seat cushion for adjusting the height of the seat cushion; the connecting pipe of the seat cushion is provided with a multidirectional simple mark; the multidirectional simple mark is a plurality of scale marks which are distributed in a staggered manner and are arranged in multiple directions around the connecting pipe.

In the utility model, the shock absorbing elastic body can be disassembled and replaced with elastic bodies with different elastic forces according to actual requirements.

Further, the ratio size and the driving mode characteristics of the wheels consider the mode change of the product in the whole life cycle in cooperation with the physiological growth of the human body.

Further, the utility model also includes a conceptual enclosure for a child mode; the concept type shell is internally provided with a forced deceleration damping circuit and a luminous interesting circuit.

Furthermore, the utility model also comprises an auxiliary wheel or a structural form which is additionally arranged on the outer side of the rear wheel bearing in the child and vehicle learning mode, so that the appearance and the use function of the auxiliary wheel or the structural form can be changed.

Further, the utility model also comprises a faucet pipe of the front wheel bracket in student and adult modes, which is divided into an upper section pipe and a lower section pipe through a hinge, and the outer wall of the upper section pipe is provided with a third elastic fixed point; the segment pipes can be inserted and overlapped with each other. The faucet is in an eccentric T shape, the faucet can rotate 180 degrees, a plurality of through holes are formed in the vertical pipe of the faucet, and when the vertical pipe of the faucet passes through the upper pipe, the vertical pipe of the faucet can be fixed with the through holes in a matched mode through a third elastic fixing point, and the height of the vertical pipe of the faucet can be adjusted.

Preferably, a through transverse tube through hole is formed in the transverse tube of the faucet, an anti-slip hole is formed in the elastic handle sleeve, and the hole diameter of the through hole is larger than that of the anti-slip hole; the transverse tube through holes correspond to the anti-skid holes; the faucet can rotate 180 degrees, and the brake handle and the elastic handle sleeve can rotate 180 degrees in a matched manner; the anti-slip holes still correspond to the through holes after rotation.

The utility model relates to a power supply mechanism which is fixed on a front wheel bracket and comprises a power supply shell, a battery bracket, a battery module and a control panel module;

one end of the power supply shell is opened and used for plugging and unplugging the battery bracket; the battery module is arranged on the battery bracket; the control panel module is arranged in the power supply shell and is connected with the battery module for supplying power. The power supply shell is provided with a side opening at the other end, a detachable maintenance and disassembly module is arranged in the side opening, and the control panel module is fixed in the maintenance and disassembly module;

in the maintenance dismantlement module, towards the lateral wall of opening part being provided with the power connecting hole, after the battery support inserts power shell, battery module's plug will be visited in the power connecting hole and be connected the power supply with the control panel module, and the side structure of battery module plug is as latched device this moment for stop the dismantlement of maintenance dismantlement module. The battery can be disassembled and assembled in a folding state, and the internal locking mechanism increases the safety characteristic. The battery module is integrally designed by adopting a charge-discharge port;

preferably, the battery module is detachably mounted on the battery holder; can be made into an active or passive driving mode according to actual needs.

Preferably, the power supply shell and the battery support are provided with support catches for fixing the power supply shell and the battery support.

In the utility model, the periphery of the toothed disc is provided with a protective cover, and a chain guide device is arranged at a chain inlet of the protective cover. The chain guide device is made of wear-resistant material buckles with arc surfaces, and is in clearance fit with the axle center to guide the chain to the middle position of the protective cover in a rolling way.

The beneficial effects of the utility model are as follows:

1. through the rotatory folding of axis, utilize mortise and tenon structure locking, the structure is simpler light and handy, and atress security performance is higher.

2. The first diode, the pedal rotating shaft, the tap and the seat are telescopic, so that smaller folding volume is realized.

3. While maintaining the original shock absorbing effect, a more compact and light shock absorbing structure is realized.

4. The first diode stretches and contracts, and the tap and the seat stretch and contract, so that the device is suitable for people with various body types.

5. The multifunctional extension of the bicycle is realized, the requirements of riders of different ages can be met, the effective service cycle of the bicycle is greatly prolonged, and the maximum utilization of material resources is realized.

6. The design of the anti-drop handle can adapt to the shape of the hand feeling to the greatest extent, and the lightweight design is carried out by utilizing the characteristics of materials and stress.

7. The battery can be disassembled only after folding (namely under abnormal use conditions), and the control panel module can be maintained after the battery is disassembled, so that potential safety hazards are prevented.

8. The novel chain guide device is adopted to reduce chain dropping caused by twisting.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1-15 are schematic structural views of the sleeve and mortise and tenon mechanism of the present utility model.

Fig. 16-27 are schematic views of the folding process of the present utility model.

Fig. 28 to 32 are schematic structural views of the fishbone elastic pad of the utility model.

Fig. 33-37 are schematic views of the structure of the faucet of the present utility model.

Fig. 38-40 are schematic diagrams of mode switching according to the present utility model.

Fig. 41 to 44 are schematic views of the power supply mechanism of the present utility model.

Fig. 45-47 are schematic views of shock absorbing structures according to the present utility model.

Fig. 48 is a schematic structural view of the cam buckle of the present utility model.

Fig. 49 to 53 are schematic structural views of the sleeve and mortise and tenon mechanism in embodiment 2.

Fig. 54 is a schematic view of the structure of the spring pin in embodiment 2.

FIG. 55 is a schematic view of the shock absorbing elastomer removal.

Fig. 1 to 55:

1-a front wheel bracket; 11-primary pipe; 111-primary pipe holes; 113-eccentric fixing pieces; 114-eccentric holes; 115-eccentric anchor tab securing holes; 12-diode; 121-diode holes; 122-limit protrusions; 13-spring indexing pins; 131-check ring; 132-indexing pin feature; 133-a spring; 134-indexing pin body; 135-locking nut; 136-tightening the nut; 137-a lateral locking mechanism; 1371-L shaped handle; 1372-spring; 1373-clamp spring; 138-indexing pin through holes; 14-fishbone shaped elastic pad; 141-grooves; 142-elastic pad through holes; 15-mounting holes; 16-tap tube; 161-spring pins; 162-standpipe through holes; 163-hinge; 17-pedal; 171-foot through holes; 172-foot grooves;

2-a rear wheel bracket; 21-seat tube; 22-a shock-absorbing spring; 23-limiting rings; 24-a seat cushion connecting pipe; 241-simple labeling in multiple directions; 25-quick-release; 26-limit rings;

3-driving a fixing frame; 31-driving a fixing hole of the fixing frame; 311-lower outer edge; 312-upper outer edge; 35-body fulcrum;

4-a central shaft; 41-a bottom bracket base; 411-dental tray mechanism; 42-front wheel support sleeve; 421-stent sleeve notch; 422-front wheel bracket engagement portion; 423-protrusions; 424-stent sleeve groove; 43-a housing; 431-elastic pin; 4311-pull ring; 4312-an elastomer; 4313—a resilient pin body; 432-first groove; 433-a second groove; 434-housing protrusions; 44-a central shaft rotation shaft; 441-a first rotating shaft tube; 442-a second rotating shaft tube; 443-inner hollow tube; 444-raised heads; 445-shaft through hole; 45-embedding an extension sleeve; 451-extending sleeve indentations; 452-an extension sleeve engagement portion; 453-extension sleeve through hole;

5-a handle; 51-an elastic handle sleeve; 511-anti-slip holes; 52-a transverse tube; 521-a transverse tube through hole;

6-a power supply mechanism; 61-a power supply housing; 62-battery holder; 63-a battery module; 65-repairing the disassembly module; 66-battery module plug; 67-a power connection hole; 69-a bracket lock catch;

7-front wheels;

8-a rear wheel; 81-an inner gear ring; 82-rear wheel bearings; 83-auxiliary wheels;

a-conceptual type housing; b-protecting cover; and B1-closing the buckle.

Detailed Description

The utility model will be described in further detail with reference to the following specific examples and drawings. The procedures, conditions, experimental methods, etc. for carrying out the present utility model are common knowledge and common knowledge in the art, except for the following specific references, and the present utility model is not particularly limited.

Example 1

The utility model provides a folding bicycle, which comprises a front wheel bracket, a rear wheel bracket and a driving fixing frame, wherein the front wheel bracket and the rear wheel bracket are connected by a middle shaft;

the front wheel support is connected with the front wheel, and the rear wheel support is connected with the rear wheel. The size of the front wheel is standard with the range of application of the product and the safety performance required by road commute, and is usually 12-14 inches; the rear wheel is limited to a size that gives a compromise between riding comfort and folding, typically less than 22 inches.

The front wheel support 1, the rear wheel support 2 and the driving fixing frame 3 are rotatably connected through a center shaft 4; the front wheel support and the rear wheel support are connected with each other through a sleeve and a mortise mechanism, the sleeve is used for locking the front wheel support and the rear wheel support, and the front wheel support and the rear wheel support can be unlocked after the sleeve is pulled out from the mortise mechanism, so that the front wheel support and the rear wheel support can be rotated and folded; the rear wheel support is connected with the driving fixing frame, and the driving fixing frame is connected with the rear wheel.

The realization of sleeve pipe and mortise and tenon mechanism part:

as shown in fig. 1-15, the sleeve and the mortise and tenon mechanism are a central shaft structure, wherein the sleeve comprises a built-in extension sleeve 45; the mortise and tenon mechanism comprises a center shaft base 41, a front wheel bracket sleeve 42, a shell 43 and a center shaft rotating shaft 44;

the front wheel bracket sleeve 42 is fixed with the front wheel bracket 1, and the outer shell 43 is fixed with the rear wheel bracket 2;

a dental tray mechanism 411 and the central shaft rotating shaft 44 are fixed on the central shaft base;

the bottom bracket bearing shaft comprises: a first rotary shaft tube 441 and a second rotary shaft tube 442, which are hollow; the second rotating shaft pipe is arranged in the first rotating shaft pipe and is concentric; the first shaft tube is fixed on the center shaft base, an inner hollow tube 443 penetrating through the center shaft is arranged in the first shaft tube, a raised head 444 is arranged at the mouth of the inner hollow tube, and the inner hollow tube is fixed; the side surface of the second rotating shaft tube is T-shaped, one end far away from the center shaft base is provided with a round plane, and the circumference of the round plane is smaller than the inner diameter of the built-in extension sleeve; the first rotating shaft tube and the second rotating shaft tube are provided with middle shaft rotating shaft through holes 445 corresponding to the positions;

the two sides of the hollow of the built-in extension sleeve are provided with openings, and an extension sleeve notch 451 is arranged at the opening of one side, and when the built-in extension sleeve is completely inserted between the first rotating shaft tube and the second rotating shaft tube, the extension sleeve notch is locked with the inner hollow tube in a clamping way to prevent the rotation of the extension sleeve; an extension sleeve clamping part 452 is arranged at the other side opening; an extension sleeve through hole 453 is arranged on the wall of the built-in extension sleeve;

the front wheel support sleeve is hollow and is provided with openings at two sides, a support sleeve notch 421 is arranged at the opening at one side, and when the front wheel support sleeve is sleeved outside the first rotating shaft tube, the support sleeve notch is locked with the two raised heads in a clamping way; the other side is provided with a front wheel bracket clamping part 422 which is matched and locked with the extension sleeve clamping part;

the two sides of the shell are hollow, a first elastic fixed point, a first groove 432 and a second groove 433 are arranged at the opening of one side far away from the center shaft base, and the second groove can be locked with the bulges 423 at the two ends of the clamping part of the front wheel bracket in a clamping way; the bottom of the first groove is in an arc shape and is matched with the main beam of the front wheel bracket;

when the front wheel support sleeve is clamped with the middle shaft rotating shaft, the spring pin can pass through the middle shaft rotating shaft through hole 445 and the extension sleeve through hole 453 and can prevent the front wheel support sleeve from transversely falling out of the middle shaft rotating shaft;

in this embodiment, the first elastic fixing point is a spring pin 431, and when the spring pin is pulled up, the front wheel support sleeve and the built-in extension sleeve can be separated from the central shaft rotating shaft, and the sleeve can be pulled out to realize rotation of the central shaft rotating shaft, so as to achieve the folding effect.

A dental disc mechanism and the central shaft rotating shaft are fixed on the central shaft base; the distance from the pedal spindle to the rear wheel can be reduced, the folding size is reduced, and the spring pin is arranged to fix the state before and after folding, so that chain dropping is prevented.

Realization of fishbone part:

28-32, a telescopic structure is arranged on the front wheel bracket and comprises a primary pipe 11 and a secondary pipe 12; a plurality of primary pipe holes 111 penetrating the primary pipe are formed in the primary pipe at intervals, and a diode hole 121 is formed in the secondary pipe and used for penetrating the second elastic fixing point. In this embodiment, the second elastic fixing point is a spring index pin 13; the primary tube is retractable into the secondary tube and is locked by a spring indexing pin.

The upper pipe orifice and the lower pipe orifice of the reinforced pipe are flush with the primary pipe orifice, so that the strength of the primary pipe can be increased, the longitudinal bearing capacity can be increased, the deformation can be reduced, and the protection level can be increased;

the primary tube is retractable into the secondary tube and is locked by a spring indexing pin. The spring indexing pin passes through the foothold 17 to secure the foothold to the diode.

The spring indexing pin includes: a retainer ring 131, an index pin feature 132, a spring 133, an index pin body 134, a lock nut 135, a packing nut 136, and a transverse locking mechanism 137; the tightening nut is provided with external threads for penetrating through the diode hole and being matched with the internal threads to press the fishbone-shaped elastic gasket 14; the check ring is arranged on the pedal, is fixed with the indexing pin main body and is used for realizing connection between the pedal and the indexing pin main body; the indexing pin main body passes through the indexing pin part, and the spring is sleeved outside the indexing pin main body to realize the function of the indexing pin. The lock nut acts on the locking relative position of the indexing pin body and the tightening nut after adjustment.

The indexing pin piece and the indexing pin body are provided with an indexing pin through hole 138;

the pedal side is provided with a pedal through hole 171 for passing through the transverse locking mechanism of the spring indexing pin; the transverse locking mechanism comprises an L-shaped handle 1371, a spring 1372 and a clamp spring 1373; the L-shaped handle passes through the indexing pin through hole to lock the spring indexing pin; when the transverse locking mechanism is pulled out, the pedal can be lifted up to bring out the spring indexing pin, and the first diode and the second diode are unlocked to enable the telescopic structure to realize the telescopic operation; after the pedal is put down, the index pin main body passes through the diode hole, the fishbone-shaped elastic gasket and the diode hole to realize one-diode locking; the foothold is also provided with a foothold through hole 171 for placing the L-shaped handle.

The telescoping structure further includes a fishbone shaped elastomeric pad. The middle of the fishbone-shaped elastic gasket is thick, the fishbone-shaped elastic gasket is gradually thinned towards the transition of two sides, grooves 141 are formed in the two sides of the fishbone-shaped elastic gasket, and the grooves are matched with limiting protrusions 122 arranged in the diode mouth to prevent the fishbone-shaped elastic gasket from being taken out when the primary pipe stretches out and draws back. Because the stress of the primary pipe and the secondary pipe is the bottom surface of the rear end and the upper part of the fulcrum, the compression area of the fulcrum can be enlarged by adopting the fishbone-shaped compression mechanism, and the compression mechanism is more reasonable. In addition, the fishbone-shaped elastic gasket is designed into an axisymmetric mode, and can be reversely arranged if one end of the fishbone-shaped elastic gasket is worn seriously, so that the service time of a part is greatly prolonged.

The top of the fishbone shaped elastic pad is provided with an elastic pad through hole 142 for the spring index pin to pass through for connecting the primary pipe.

The diode is further internally provided with an eccentric fixing piece 113 which is provided with an eccentric hole 114 and is used for fixing an eccentric fixing piece fixing hole 115 at the bottom of the primary pipe through a bolt by a mounting hole 15 formed on the front wheel bracket sleeve; the function is when the adjustment, because the stationary blade can be limited by fishbone shape elastic gasket, and can't deviate from, prevent that the primary pipe from taking out from the diode, in addition because screw thread and primary pipe are eccentric and screw thread and stationary blade are also eccentric, stationary blade and primary pipe are eccentric too, consequently can prevent the random rotation of primary pipe in the diode when extracting the elastic pin.

The embodiment adopts the structure mode to realize the structure mode of front-back extension and to minimize the volume.

Realization of a shock absorbing structure:

as shown in fig. 45-47, an elastic body is sleeved outside the seat tube 21 of the rear wheel bracket, in this embodiment, the shock absorbing spring 22 is connected to the stop collar 26 on the seat tube at its lower end, and connected to and driving the lower outer edge 311 of the fixing hole 31 of the fixing frame at its upper end. The up-and-down movement of the shock absorber does not affect the meshing of the driving sprocket wheel, because the axle center fixing of the rear wheel and the axle center fixing of the motor are on the same bracket, and the rotation and the movement are synchronous actions. In addition, the stress of the chain is considered, so that the involute of the shock absorbing area is in the range of the length change of the chain, and no extra tension is generated on the chain during shock absorbing.

The seat tube of the rear wheel bracket passes through the fixing hole of the driving fixing frame, the seat cushion connecting tube 24 of the seat cushion is inserted into the seat tube, and the seat tube at the outer edge 312 of the upper outer edge of the fixing hole of the driving fixing frame is provided with a quick release 25 for adjusting the height of the seat cushion.

The rear shock absorber is realized by driving the fixing frame to rotate and displace around the supporting point up and down under the action of the shock absorber spring. The shock absorber is simple and compact in structure, short in lever distance and rapid in force transmission, and personalized configuration can be carried out according to the load of a riding individual, for example: the elastic modulus and other parameters of the spring are changed, the distance between the rear wheel and the seat cushion is more easily shortened than that of the prior shock absorber, and the shock absorber is very suitable for folding and light occasions.

When the replacement spring is detached, the quick release 25 is detached, the retainer ring of the fulcrum and the bolt of the replacement elastic part are loosened, the driving fixing frame is lifted upwards, and then the shock-absorbing spring 22 is detached to replace a new shock-absorbing spring 22.

The mode conversion method comprises the following steps:

as shown in fig. 38-40, an auxiliary wheel 83 may be added to the outside of the rear wheel bearing 82 to modify it into a learning mode.

The faucet 180 can rotate, and the brake handle and the elastic handle sleeve 180 are matched for rotation, so that the device is suitable for users with different arm lengths and habits.

The front wheel support contraction structure can adjust the length of the vehicle body, increase riding comfort, and can rotate to adjust the direction after being lifted by foot so as to be suitable for different lengths and serve as a front wheel water blocking mechanism.

The cushion height can be quickly adjusted through the multidirectional simple marks 241, and the height position can be memorized when the cushion is unfolded after being folded. The multi-azimuth simple mark can be a plurality of scale marks which are staggered in azimuth and are arranged around the connecting pipe.

The handle and the seat height of the vehicle can be adjusted, and the distance from the handle to the seat can be adjusted to meet the requirements of different age groups.

The conceptual shell A is additionally arranged to realize the baby carriage mode. The operating handles such as a T-shaped Harley handle, a U-shaped handle or a steering wheel which are easy to replace and light in weight are inserted into the faucet tube so as to meet the fun of children, and the mode of the baby carrier can be changed into an electric car mode and a bicycle mode through different active or passive combinations.

A forced deceleration damping circuit and a luminous interesting circuit can be designed in the conceptual shell; the forced deceleration damping circuit and the luminous interesting circuit are arranged in the space inside the conceptual shell, and a plug on a connecting wire penetrates into the control panel module for connection. The form of this conceptual shell can be diversified design, and the accessory wheel that is furnished with is different can become various forms, for example: motor-terrain vehicles, motor-tricycles, beach vehicles, etc.

The realization of the faucet structure:

as shown in fig. 33-37, the faucet tube 16 of the front wheel bracket is divided into an upper section tube and a lower section tube by a hinge 163, and the outer wall of the upper section tube is provided with a spring pin 161;

the tap is eccentric T type, is equipped with a plurality of standpipe through-holes 162 that run through on its standpipe, and accessible spring pin 161 and standpipe through-hole 162 cooperation are fixed after the standpipe of tap passes the upper segment pipe, height-adjustable.

The faucet can rotate, and can be fixed through the cooperation of the spring pin and the through hole after rotating 180 degrees, so that the requirements of different people can be met.

Similarly, the bottom of the tap is provided with an eccentric hole for preventing the tap from being pulled out of the section pipe, and in addition, the tap can share the fixing piece due to the eccentric thread.

The realization of the handle structure:

the anti-slip structure is arranged on the handle 5, the anti-slip structure is that a transitional anti-slip hole 511 is arranged on the elastic handle sleeve 51, a through hole 521 is arranged on the transverse tube 52, the through hole corresponds to the anti-slip hole, the aperture of the through hole is slightly larger than that of the anti-slip hole, so that fingers cannot directly contact with the metal part of the transverse tube, a comfortable rotating angle can be slightly adjusted, the elastic material can enable the attaching force of the elastic handle sleeve after being embedded into the through hole to be firmer, the handle is pinched, and the stress of the handle embedded into the through hole of the faucet is increased, so that the handle is prevented from being taken off.

After the elastic handle sleeve 51 rotates 180 degrees on the transverse tube, the anti-slip holes still correspond to the through holes.

Implementation of power supply mechanism

As shown in fig. 41 to 44, the power supply mechanism 6 is fixed to a front wheel bracket, and includes a power supply housing 61, a battery bracket 62, a battery module 63, and a control board module;

one end of the power supply shell is opened and used for plugging and unplugging the battery bracket; the side edge of the other end of the power supply shell is provided with an opening, a detachable maintenance and disassembly module 65 is arranged, and the control panel module is fixed in the maintenance and disassembly module;

the battery module is arranged on the battery bracket; the battery support can be separated from the battery module, and when the electric drive is not used, the battery module can be removed, the battery support is reserved, the appearance integrity of a power supply mechanism is not damaged, and the safety protection level of a vehicle type can be improved. The battery module adopts a charge-discharge port integrated design, and can be charged only after the battery support is removed after the bicycle is folded, so that the battery can not be charged or plugged when the bicycle is used, the protection level is increased, and the damage and the artificial accidents caused by misplug are improved.

In the maintenance dismantlement module, set up a power connecting hole 67 towards the opening part, after the battery support inserts the power shell, battery module plug 66 will visit in the power connecting hole and be connected with the control panel module and supply power, the side structure of battery module plug is as power latch mechanism this moment for stop the dismantlement of maintenance dismantlement module, only after the power support pulls out, and after battery module plug leaves the power connecting hole, the maintenance dismantlement module just can dismantle. The battery module plug belongs to an internal plug after being installed, and is not externally connected with other jacks.

A bracket latch 69 is provided on the power supply housing 61 and the battery bracket 62 for fixing the power supply housing and the battery bracket.

Implementation of the chain guide device:

the outer periphery of the chain plate of the foot pedal is provided with a protective cover, a chain inlet of the protective cover is derived into a chain guiding device, the device is simple in structure and light in material, the outer side of the device is outwards opened, an inner measuring closing buckle B1 is made of a wear-resistant material and is made into an arc surface, the chain is guided to the middle position of the protective cover, the closing buckle is in clearance fit with a hole in the protective cover, and the closing buckle is in a rolling state in the guiding process. The protective cover is fixed on the bottom bracket base 41 by a fastener, and the relative position can be adjusted by a gasket, so that the rotation position of the dental tray can be at the middle position of the protective cover.

The chain guide device can also play a role in preventing the chain from being separated from the big tooth disc in folding.

Folding method

The folding process of the folding bicycle provided by the utility model is as follows: as shown in fig. 16-27, the transverse locking mechanism is withdrawn first, then the pedal is lifted to unlock a diode, and the primary pipe is retracted; the first elastic fixed point is pulled up, the sleeve is pulled out, and after the middle shaft is rotated anticlockwise, the front wheel bracket and the rear wheel bracket can be folded; finally, the faucet and the seat tube are retracted to complete folding.

Example 2

Embodiment 2 provides a folding bicycle, which is different from embodiment 1 in that:

1) Center shaft structure

49-53, the sleeve and mortise and tenon mechanism are of a central shaft structure, wherein the sleeve comprises a built-in extension sleeve; the mortise and tenon mechanism comprises a front wheel bracket sleeve, a shell, a middle shaft rotating shaft and a middle shaft base;

the front wheel support sleeve is fixed with the front wheel support, and the shell is fixed with the rear wheel support; a dental disc mechanism and the central shaft rotating shaft are fixed on the central shaft base;

the bottom bracket bearing shaft comprises: the first rotating shaft pipe and the second rotating shaft pipe are hollow; the second rotating shaft pipe is arranged in the first rotating shaft pipe and is concentric; the first rotating shaft tube is fixed on the center shaft base, and an inner hollow tube penetrating through the center shaft is arranged in the first rotating shaft tube; the pipe orifice of the inner hollow pipe is provided with a convex head for fixing the inner hollow pipe; the side surface of the second rotating shaft tube is T-shaped, one end far away from the center shaft base is provided with a round plane, and the circumference of the round plane is smaller than the inner diameter of the built-in extension sleeve; the first rotating shaft tube and the second rotating shaft tube are provided with middle shaft rotating shaft through holes with corresponding positions;

the two sides of the hollow of the built-in extension sleeve are provided with openings, and an extension sleeve notch is arranged at the opening of one side, and when the built-in extension sleeve is completely inserted between the first rotating shaft tube and the second rotating shaft tube, the extension sleeve notch is locked with the inner hollow tube in a clamping way to prevent the rotation of the extension sleeve; the other side opening is provided with an extension sleeve clamping part; an extension sleeve through hole is formed in the wall of the built-in extension sleeve;

the front wheel support sleeve is hollow, two sides of the front wheel support sleeve are provided with openings, and a support sleeve notch is arranged at the opening of one side of the front wheel support sleeve, and when the front wheel support sleeve is sleeved outside the first rotating shaft tube, the support sleeve notch is locked with the raised head in a clamping way; the other side is provided with a front wheel bracket clamping part which is matched and locked with the extension sleeve clamping part;

the shell is hollow and provided with openings at two sides, a first elastic fixed point, a first groove and a shell bulge are arranged at the opening at one side far away from the center shaft base, and the bulge and the bracket sleeve grooves at two ends of the front wheel bracket clamping part can be clamped and locked; the bottom of the first groove is in an arc shape and is matched with the main beam of the front wheel bracket;

when the front wheel support sleeve is clamped with the center shaft rotating shaft, the first elastic fixed point can pass through the center shaft rotating shaft through hole and the extension sleeve through hole and can prevent the front wheel support sleeve from transversely falling out of the center shaft rotating shaft;

when the first elastic fixed point is pulled upwards, the front wheel support sleeve and the built-in extension sleeve can be separated from the center shaft rotating shaft, and the center shaft rotating shaft can be rotated to complete folding of the bicycle.

2) As shown in fig. 54, the first elastic fixing point is an elastic pin, and includes a pull ring 4311, an elastic body 4312 and an elastic pin main body 4313; the elastic body is made of net-shaped elastic material, and threads with 1-2 teeth are arranged at the bottom of the elastic pin main body 4313. When in use, the elastic pin body 4313 is rotated to pull up the elastic pin by the pull ring 4311.

The protection of the present utility model is not limited to the above embodiments. Variations and advantages that would occur to one skilled in the art are included in the utility model without departing from the spirit and scope of the inventive concept, and the scope of the utility model is defined by the appended claims.

Claims (10)

1. A folding bicycle, comprising: a front wheel bracket, a rear wheel bracket and a driving fixing frame; wherein,,

the front wheel support and the rear wheel support are connected with each other through a sleeve and a mortise mechanism, the sleeve is used for locking the front wheel support and the rear wheel support, and the front wheel support and the rear wheel support can be unlocked after the sleeve is pulled out from the mortise mechanism, so that the front wheel support and the rear wheel support can be rotated and folded;

the rear wheel support is connected with the driving fixing frame, and the driving fixing frame is connected with the rear wheel.

2. The folding bicycle of claim 1 wherein said sleeve and mortise and tenon mechanism are a bottom bracket structure, wherein said sleeve comprises a built-in extension sleeve; the mortise and tenon mechanism comprises a front wheel bracket sleeve, a shell, a middle shaft rotating shaft and a middle shaft base;

the front wheel support sleeve is fixed with the front wheel support, and the shell is fixed with the rear wheel support; a dental disc mechanism and the central shaft rotating shaft are fixed on the central shaft base;

the bottom bracket bearing shaft comprises: the first rotating shaft pipe and the second rotating shaft pipe are hollow; the second rotating shaft pipe is arranged in the first rotating shaft pipe and is concentric; the first rotating shaft tube is fixed on the center shaft base, and an inner hollow tube penetrating through the center shaft is arranged in the first rotating shaft tube; the pipe orifice of the inner hollow pipe is provided with a convex head for fixing the inner hollow pipe; the side surface of the second rotating shaft tube is T-shaped, one end far away from the center shaft base is provided with a round plane, and the circumference of the round plane is smaller than the inner diameter of the built-in extension sleeve; the first rotating shaft tube and the second rotating shaft tube are provided with middle shaft rotating shaft through holes with corresponding positions;

the two sides of the hollow of the built-in extension sleeve are provided with openings, and an extension sleeve notch is arranged at the opening of one side, and when the built-in extension sleeve is completely inserted between the first rotating shaft tube and the second rotating shaft tube, the extension sleeve notch is locked with the inner hollow tube in a clamping way to prevent the rotation of the extension sleeve; the other side opening is provided with an extension sleeve clamping part; an extension sleeve through hole is formed in the wall of the built-in extension sleeve;

the front wheel support sleeve is hollow, two sides of the front wheel support sleeve are provided with openings, and a support sleeve notch is arranged at the opening of one side of the front wheel support sleeve, and when the front wheel support sleeve is sleeved outside the first rotating shaft tube, the support sleeve notch is locked with the raised head in a clamping way; the other side is provided with a front wheel bracket clamping part which is matched and locked with the extension sleeve clamping part;

the shell is hollow and provided with openings at two sides, a first elastic fixed point, a first groove and a second groove are arranged at the opening at one side far away from the center shaft base, and the second groove can be locked with the bulges at two ends of the clamping part of the front wheel bracket in a clamping way; the bottom of the first groove is in an arc shape and is matched with the main beam of the front wheel bracket;

when the front wheel support sleeve is clamped with the center shaft rotating shaft, the first elastic fixed point can pass through the center shaft rotating shaft through hole and the extension sleeve through hole and can prevent the front wheel support sleeve from transversely falling out of the center shaft rotating shaft;

when the first elastic fixed point is pulled up, the front wheel support sleeve and the built-in extension sleeve can be separated from the center shaft rotating shaft, and the built-in extension sleeve can be pulled out to realize rotation of the center shaft rotating shaft, so that the bicycle is folded.

3. The folding bicycle of claim 1 wherein said sleeve and mortise and tenon mechanism are a bottom bracket structure, wherein said sleeve comprises a built-in extension sleeve; the mortise and tenon mechanism comprises a front wheel bracket sleeve, a shell, a middle shaft rotating shaft and a middle shaft base;

the front wheel support sleeve is fixed with the front wheel support, and the shell is fixed with the rear wheel support; a dental disc mechanism and the central shaft rotating shaft are fixed on the central shaft base;

the bottom bracket bearing shaft comprises: the first rotating shaft pipe and the second rotating shaft pipe are hollow; the second rotating shaft pipe is arranged in the first rotating shaft pipe and is concentric; the first rotating shaft tube is fixed on the center shaft base, and an inner hollow tube penetrating through the center shaft is arranged in the first rotating shaft tube; the pipe orifice of the inner hollow pipe is provided with a convex head for fixing the inner hollow pipe; the side surface of the second rotating shaft tube is T-shaped, one end far away from the center shaft base is provided with a round plane, and the circumference of the round plane is smaller than the inner diameter of the built-in extension sleeve; the first rotating shaft tube and the second rotating shaft tube are provided with middle shaft rotating shaft through holes with corresponding positions;

the two sides of the hollow of the built-in extension sleeve are provided with openings, and an extension sleeve notch is arranged at the opening of one side, and when the built-in extension sleeve is completely inserted between the first rotating shaft tube and the second rotating shaft tube, the extension sleeve notch is locked with the inner hollow tube in a clamping way to prevent the rotation of the extension sleeve; the other side opening is provided with an extension sleeve clamping part; an extension sleeve through hole is formed in the wall of the built-in extension sleeve;

the front wheel support sleeve is sleeved outside the first rotating shaft tube, and the notch and the raised head are clamped and locked; the other side is provided with a front wheel bracket clamping part which is matched and locked with the extension sleeve clamping part;

the shell is hollow and provided with openings at two sides, a first elastic fixed point, a first groove and a shell bulge are arranged at the opening at one side far away from the center shaft base, and the shell bulge and the bracket sleeve grooves at two ends of the front wheel bracket clamping part can be clamped and locked; the bottom of the first groove is in an arc shape and is matched with the main beam of the front wheel bracket;

when the front wheel support sleeve is clamped with the center shaft rotating shaft, the first elastic fixed point can pass through the center shaft rotating shaft through hole and the extension sleeve through hole and can prevent the front wheel support sleeve from transversely falling out of the center shaft rotating shaft;

when the first elastic fixed point is pulled upwards, the front wheel support sleeve and the built-in extension sleeve can be separated from the center shaft rotating shaft, and the center shaft rotating shaft can be rotated to complete folding of the bicycle.

4. The folding bicycle of claim 1, wherein the front wheel support is provided with a telescopic structure comprising a primary tube and a secondary tube; a plurality of primary pipe holes penetrating the primary pipe are formed in the primary pipe at intervals, and a diode hole is formed in the diode and used for penetrating the pressing device; the primary pipe can be retracted into the diode and locked by the compression device; the pressing device is connected with the pedal;

the pedal can be lifted, the pedal is provided with a lifting and pressing device, and the first diode and the second diode are unlocked to enable the telescopic structure to realize telescopic operation; after the pedal is put down, the compacting device is reduced to pass through the diode hole, the fishbone-shaped elastic gasket and the diode hole to realize one-pole and diode locking.

5. The folding bicycle of claim 4, wherein the compression device is a second spring attachment point comprising: the device comprises a retainer ring, an elastic fixing part, an elastic element, an elastic fixing main body, a locking nut, a tightening nut and a transverse locking mechanism; the tightening nut is provided with external threads and is used for penetrating through the diode hole and pressing the fishbone-shaped elastic gasket by matching with the internal threads; the retainer ring is fixed on the pedal and is fixed with the elastic fixing main body, and the retainer ring is used for realizing connection between the pedal and the elastic fixing main body; the elastic fixing main body passes through the elastic fixing part, and the elastic element is sleeved outside the elastic fixing main body to realize the function of the elastic fixing main body; elastic fixing through holes are formed in the elastic fixing part and the elastic fixing main body;

and/or the number of the groups of groups,

the side edge of the pedal is provided with a through hole for passing through a transverse locking mechanism of the pressing device; the transverse locking mechanism comprises a handle, an elastic element and a clamp spring; the clamping spring is arranged in the pedal and is connected with the handle, and the handle is sleeved with an elastic element which enables the handle to be kept in the pedal under the condition of no external force; the handle passes through the compressing device to realize locking; when the transverse locking mechanism is pulled out, the pedal can be lifted up to bring out the pressing device, and the first diode and the second diode are unlocked to enable the telescopic structure to realize the telescopic effect; after the pedal is put down, the pressing device passes through the diode hole, the fishbone-shaped elastic gasket and the diode hole to realize one-pole and diode locking;

and/or the number of the groups of groups,

the inside of the diode is further provided with an eccentric fixing piece which is provided with an eccentric hole and is used for fixing a mounting hole formed in the front wheel bracket sleeve on the eccentric fixing piece fixing hole of the primary pipe bottom through a bolt;

and/or the number of the groups of groups,

after the pedal is lifted, the pedal can rotate around the pressing device as a shaft;

and/or the number of the groups of groups,

the telescopic structure further comprises a fishbone-shaped elastic gasket; the middle of the fishbone-shaped elastic gasket is thick, the fishbone-shaped elastic gasket is gradually thinned towards two sides in transition, and grooves are formed in the side edges of the fishbone-shaped elastic gasket and are matched with limit protrusions arranged in the diode port; the top of the fishbone-shaped elastic gasket is provided with a through hole for the pressing device to penetrate through the diode hole, the fishbone-shaped elastic gasket and the one-pole pipe hole to lock the diode.

6. The folding bicycle of claim 1, wherein the seat tube of the rear wheel bracket is externally sleeved with a shock absorbing mechanism; the shock absorbing mechanism is a shock absorbing elastomer sleeved outside the seat tube; the lower end of the shock-absorbing elastic body is connected with a limit ring on the seat tube, and the upper end of the shock-absorbing elastic body is connected with the lower outer edge of a fixing hole of the driving fixing frame; the shock absorbing mechanism realizes shock absorption in a body fulcrum manner; the shock absorbing elastic body is detachable;

and/or the number of the groups of groups,

the seat tube of the rear wheel bracket passes through the fixing hole of the driving fixing frame, the connecting tube of the seat cushion is inserted into the seat tube, and the seat tube at the upper outer edge of the fixing hole of the driving fixing frame is provided with a quick release for adjusting the height of the seat cushion; the connecting pipe of the seat cushion is provided with a multidirectional simple mark; the multidirectional simple mark is a plurality of scale marks which are distributed in a staggered manner and are arranged in multiple directions around the connecting pipe.

7. The folding bicycle of claim 1, wherein the conceptual housing; a forced deceleration damping circuit and a luminous interesting circuit are arranged in the conceptual type shell; the forced deceleration damping circuit and the luminous interesting circuit are connected with the power supply mechanism;

and/or the number of the groups of groups,

the folding bicycle further comprises: an auxiliary wheel or a combined conceptual type shell is additionally arranged on the outer side of the rear wheel bearing.

8. The folding bicycle of claim 1, wherein the cross tube of the tap is provided with a through cross tube through hole, the elastic handle sleeve is provided with an anti-slip hole, and the aperture of the through hole is larger than that of the anti-slip hole; the transverse tube through holes correspond to the anti-skid holes; the brake handle and the elastic handle sleeve can rotate in a 180-degree fit manner; the anti-slip holes still correspond to the positions of the through holes after rotation;

and/or the number of the groups of groups,

the folding bicycle further comprises: the faucet pipe of the front wheel bracket is divided into an upper section pipe and a lower section pipe through a hinge, and the upper section pipe can be inserted into the lower section pipe; the outer wall of the upper pipe is provided with a third elastic fixed point; the faucet is eccentric T-shaped, the faucet can rotate 180 degrees, the upper section tube is provided with a plurality of through holes which penetrate through, and the upper section tube can be fixed with the through holes in a matched manner through a third elastic fixing point after being inserted into the lower section tube, so that the height of the faucet can be adjusted.

9. The folding bicycle of claim 1, further comprising: the protecting cover is arranged on the periphery of the toothed disc, and a chain guide device is arranged at a chain inlet of the protecting cover; the chain guide device is a snap fastener, adopts wear-resistant materials with arc surfaces, is in clearance fit with the axle center of the protective cover, and guides the chain to the middle position of the protective cover in a rolling way.

10. The folding bicycle of claim 1, further comprising: the power supply mechanism is fixed on the front wheel bracket and comprises a power supply shell, a battery bracket, a battery module and a control panel module;

one end of the power supply shell is opened and used for plugging and unplugging the battery bracket; the battery module is arranged on the battery bracket; the control panel module is arranged in the power supply shell and is connected with the battery module for supplying power; the power supply shell is provided with a side opening at the other end, a detachable maintenance and disassembly module is arranged in the side opening, and the control panel module is fixed in the maintenance and disassembly module;

the side wall of the opening is provided with a power connection hole, when the battery bracket is inserted into the power shell, the plug of the battery module is connected with the control panel module to supply power after penetrating into the power connection hole, and at the moment, the side surface structure of the battery module plug is used as a locking mechanism for blocking the disassembly of the maintenance disassembly module; the battery module is detachably arranged on the battery bracket;

the power supply shell and the battery bracket are provided with bracket locks for fixing the power supply shell and the battery bracket;

the battery support can be detached after being in a folded state.