CN207389427U - Electric bicycle and its down tube structure group - Google Patents

Abstract

The utility model discloses a kind of electric bicycle and its down tube structure group, standpipe, front tube and the back vent of down tube structure group and electric bicycle connect, and down tube structure group includes down tube and power unit.Down tube is made of composite material, and down tube includes first end, second end and accommodation chamber, and first end is connected with standpipe and back vent；Second end is connected with front tube；Accommodation chamber is to set battery.Power unit is arranged at the first end of down tube, and power unit is electrically connected with the battery.Whereby, the down tube structure group of the utility model, down tube are made of composite material; it can achieve the effect that mitigate weight, promote vehicle frame precision, and there is down tube accommodation chamber to be placed for battery, can not only efficiently use space; can have the function of to protect battery simultaneously, promote the service life of battery.

Description

Electric bicycle and its down tube structure group

Technical field

The utility model relates to a kind of bicycle and its down tube structure group, and in particular to a kind of electrical salf-walking Vehicle and its down tube structure group.

Background technology

In recent years, environmental protection and movement general mood are prevailing, and the utilization rate of bicycle is also substantially improved, but general bicycle is logical Double-legged pushes pedals are crossed to drive the advance of bicycle, happening for physical more difficult load is had on uphill way.

Therefore, there is dealer to develop electric bicycle, be provided with motor and power is provided, rider is made to step on being not required to trample In the case of plate, can also drive bicycle, be by rider can with road conditions select using manpower trample in a manner of or motor drive Mode carrys out the power resources as bicycle.

However, the motor of electric bicycle need to lean on battery to provide electric power, and there is battery constant weight can cause bicycle Weight increases, and battery is generally arranged at frame outside, is easily influenced be subject to the grade external environments that expose to the sun and rain and shortens and use the longevity Life.

In view of this, the body frame structure for automotive of electric bicycle and the set-up mode of battery how are effectively improved, makes bicycle Weight saving and simultaneously battery is allowed to be protected, the target made great efforts then into related dealer.

Utility model content

The purpose of this utility model is to provide a kind of electric bicycle and its down tube structure group, by down tube structure group Down tube be made of composite material and placed comprising accommodation chamber for battery, the weight that can mitigate electric bicycle protects electricity simultaneously Pond.

An embodiment according to the utility model provides a kind of down tube structure group, standpipe, front tube with electric bicycle And back vent connection；Down tube structure group includes down tube and power unit, and down tube is made of composite material, and down tube includes first End, second end and accommodation chamber, first end are connected with standpipe and back vent, and second end is connected with front tube, and accommodation chamber is to set battery； Power unit is arranged at the first end of down tube, and power unit is electrically connected with the battery.

According to foregoing down tube structure group, wherein composite material is carbon fibre material.Or down tube can also comprising trunnion mount and be consolidated Determine portion, trunnion mount is arranged on first end, and trunnion mount is pivotally connected for back vent, and fixed part is arranged on first end, and fixed part compares trunnion mount neighbour Nearly second end, fixed part are affixed for shock absorber.Or the pipe shaft of trunnion mount, fixed part and down tube is integrally formed or glued connection.Under or Pipe is connected with standpipe and front tube gluing.

Another embodiment according to the utility model provides a kind of electric bicycle, it includes front tube, upper tube, standpipe, under Pipe structure group, back vent and shock absorber, upper tube one end are connected with front tube, the other end connection of standpipe one end and upper tube；Down tube structure Group is connected with standpipe and front tube, and down tube structure group includes down tube and power unit, and down tube is made of composite material, and down tube bag Containing first end, second end, accommodation chamber, trunnion mount and fixed part, first end is connected with standpipe, and second end is connected with front tube, accommodation chamber To house a battery, trunnion mount is arranged on first end, and fixed part is arranged on first end, and fixed part compares trunnion mount adjacent to second End, power unit is arranged at the first end of down tube, and power unit is electrically connected with the battery.Back vent connects the first end of down tube, And back vent includes chain stay frame and seat stay frame, chain stay frame one end is articulated in trunnion mount, and seat stay frame one end is connected to the other end of chain stay frame, Shock absorber has upper end and lower end, and the upper end of shock absorber is hubbed at the other end of seat stay frame, and the lower end of shock absorber is fixed on Determine portion.

According to foregoing electric bicycle, the pipe shaft of trunnion mount, fixed part and down tube is integrally formed or glued connection.It is or compound Material is carbon fibre material.Or seat stay frame includes connecting portion and pivot pendulum portion, connecting portion one end are articulated in the other end of chain stay frame, pivot Pendulum portion one end is articulated in the other end of connecting portion, and the other end in pivot pendulum portion is articulated in the upper end of shock absorber, and the centre in pivot pendulum portion It is articulated in standpipe.Or down tube is connected with standpipe and front tube gluing.

Compared with prior art, the utility model has the advantages that：The electric bicycle of the utility model and its Down tube structure group, down tube are made of composite material, can achieve the effect that mitigate weight, and there is down tube accommodation chamber to be put for battery It puts, can not only efficiently use space, while can have the function of to protect battery, promote the service life of battery, and it is compound Material precision is high compared with common metal or alloy vehicle frame, can provide down tube and is connected with other bicycle frame pipes or for battery, power unit Assembling precision when elements are installed, is adjusted without Milling Process is reused.

Description of the drawings

Fig. 1 is illustrated to be combined according to a kind of down tube structure group of one embodiment of the utility model with standpipe, front tube and back vent Stereoscopic schematic diagram；

Fig. 2 illustrates the down tube structure group of Fig. 1 and the decomposition diagram of standpipe, front tube and back vent；

Fig. 3 illustrates the diagrammatic cross-section of the down tube structure group of Fig. 1；

Fig. 4 illustrates the stereoscopic schematic diagram of the electric bicycle according to another embodiment of the utility model；And

Fig. 5 illustrates the part isometric schematic diagram of the electric bicycle of Fig. 4.

Specific embodiment

The following drawings illustrate the embodiments of the utility model.As clearly stated, the details in many practices It will be explained in the following description.However, reader is not it will be understood that the details in these practices is applied to limit this practicality It is new.That is, in the utility model section Example, the details in these practices is non-essential.In addition, to simplify For the sake of attached drawing, some existing usual structures will be illustrated in a manner of simply illustrating in the accompanying drawings with element；And the member repeated Part will likely use be identically numbered expression.

It please refers to Fig.1, Fig. 2 and Fig. 3, wherein Fig. 1 illustrate a kind of down tube structure according to one embodiment of the utility model The stereoscopic schematic diagram that group 100 is combined with standpipe 500, front tube 700 and back vent 600, Fig. 2 illustrate the down tube structure group 100 of Fig. 1 with standing The decomposition diagram of pipe 500, front tube 700 and back vent 600, Fig. 3 illustrate the diagrammatic cross-section of the down tube structure group 100 of Fig. 1.Down tube Structure group 100 is connected with standpipe 500, front tube 700 and the back vent 600 of electric bicycle, and down tube structure group 100 includes down tube 200 And power unit 300.

Down tube 200 is made for composite material and comprising first end 210, second end 220 and accommodation chamber 230, first end 210 with Standpipe 500 and back vent 600 connect, and second end 220 is connected with front tube 700, and accommodation chamber 230 is to set battery 800；Power unit 300 are arranged at the first end 210 of down tube 200 and are electrically connected with battery 800.

Whereby, the weight saving of vehicle frame can be made with down tube made of composite material 200, and the setting of accommodation chamber 230 can be with It allows including 800 direct-assembling of battery, there is dust-proof and aesthetic appeal, and power unit 300 and electricity can be protected simultaneously Electric connection between pond 800.The details of down tube structure group 100 will be described in greater detail below.

Down tube 200 can include pipe shaft 240, and pipe shaft 240 is in hollow to form accommodation chamber 230, and pipe shaft 240 can be in square cylindricality Structure makes accommodation chamber 230 also be more suitable for the setting of battery 800 in square cylindricality, and pipe shaft 240 includes two opposite open ends, One of open end forms arc opening 241 in arcuation, another open end notch is smooth and formation can be with 700 glue of front tube The second end 220 of conjunction, certainly, in other embodiments, the first end 210 and second end 220 of down tube 200 be also configured as it is open or Closing, such as first end 210 is allowed as open and formation arc opening 241, and second end 220 is closed, and second end 220 is allowed to have The holding section of protrusion, and allow front tube 700 that there is the groove for corresponding to holding section, so that down tube 200 is removably tied with front tube 700 It closes.Or can be in pipe shaft 240 and the setting screw hole of front tube 700 mutually to screw togather interlocking, the mode that the two can engage is numerous, This is repeated no more.

Down tube 200 can also be arranged at pipe shaft 240 at arc opening 241 comprising convex cylinder 260, convex cylinder 260 in hollow and It is connected with accommodation chamber 230, and convex cylinder 260 is shaped together when making pipe shaft 240.Convex cylinder 260 is used for glued even with standpipe 500 It connects.Certainly, in other embodiments, convex cylinder 260 can also have the chimeric section of protrusion, and can removably connect with standpipe 500 It connects.

That is, in the utility model, down tube 200 with standpipe 500 and front tube 700 can be it is detachably connected, Or down tube 200 and standpipe 500 and front tube 700 can be glued connection or down tube 200 and standpipe 500 can be screw lock Connection, foregoing connection mode include but are not disclosed as limiting with above-mentioned.

Power unit 300 can include motor and crank, and power unit 300 is arranged on the first end 210 of down tube 200, lead to Cross arc opening 241 structure configuration, can allow power unit 300 electric wire by arc opening 241 into accommodation chamber 230 and It is electrically connected with the battery 800 in accommodation chamber 230.Whereby, more it is avoided that circuit is influenced be subject to dust and short circuit phenomenon occurs, To avoid the exposed hook of circuit rupture of line can be caused to foreign matter.

Fig. 4 and Fig. 5 is referred to, wherein Fig. 4 illustrates the electric bicycle 110a according to another embodiment of the utility model Stereoscopic schematic diagram, Fig. 5 illustrates the part isometric schematic diagram of the electric bicycle 110a of Fig. 4.Before electric bicycle 110a is included Pipe 700a, upper tube 400a, standpipe 500a, down tube structure group 100a and back vent 600a.

Upper tube 400a one end is connected with front tube 700a, and standpipe 500a one end is connected with the other end of upper tube 400a；Down tube knot Structure group 100a is connected with standpipe 500a and front tube 700a and comprising down tube 200a and power unit 300a, and down tube 200a is composite wood Material is made and comprising first end 210a, second end 220a, accommodation chamber (not illustrating), trunnion mount 280a and fixed part 270a, first end 210a is connected with standpipe 500a, and second end 220a is connected with front tube 700a, and accommodation chamber (does not illustrate) to set battery, trunnion mount 280a is arranged on first end 210a, and fixed part 270a is arranged on first end 210a, and to compare trunnion mount 280a neighbouring by fixed part 270a Second end 220a, power unit 300a are arranged at the first end 210a of down tube 200a, and power unit 300a electrically connects with battery It connects.The first end 210a of back vent 600a connection down tubes 200a and include chain stay frame 610a and seat stay frame 620a, chain stay frame 610a mono- End is articulated in trunnion mount 280a, and seat stay frame 620a one end is articulated in the other end of chain stay frame 610a, shock absorber 900a have upper end and Lower end, the upper end of shock absorber 900a is hubbed at the other end of seat stay frame 620a, and fixed part is fixed in the lower end of shock absorber 900a 270a。

Whereby, since down tube 200a is made of composite material, trunnion mount 280a and fixed part 270a and down tube 200a pipe shafts Combination between 240a is not required to be heat-treated by welding, and can maintain structure precision.Preferably, down tube 200a is carbon fiber material Matter, due to the making of carbon fiber down tube 200a be mold locking under carry out heating cure program, after finishing trunnion mount 280a, The pipe shaft 240a of fixed part 270a and down tube 200a has precisely been molded, therefore is not required to use existing Welding-Heating Treatment, no Deformed element is easily led to, is with can be with the precision of control element, and then solves the puzzlement of technique productions.

In the present embodiment, the basic structure of down tube structure group 100a substantially with the down tube structure group described in Fig. 1 to Fig. 3 100 is similar, and not existing together can be explained below, and mutually exists together and repeat no more.

Front tube 700a, upper tube 400a, standpipe 500a and back vent 600a are all made of aluminum alloy materials, and firm with light weight The advantages of, the fixed part 270a quantity that down tube 200a is included is two, and down tube 200a is also comprising convex cylinder 260a, two fixations Portion 270a is arranged on pipe shaft 240a and the outer wall of the outer wall of connection pipe shaft 240a and convex cylinder 260a.That is, convex cylinder Fixed part 270a is provided between the outer wall of 260a and the outer wall of pipe shaft 240a, and two fixed part 270a are relative to each other, it is fixed Portion 270a can affixed shock absorber 900a equipped with hole.

Back vent 600a is made of aluminum alloy material, and wherein seat stay frame 620a can include connecting portion 621a and pivot pendulum portion 622a, One end of connecting portion 621a is articulated in the other end of chain stay frame 610a, and one end of pivot pendulum portion 622a is articulated in the another of connecting portion 621a One end, the other end of pivot pendulum portion 622a is articulated in shock absorber 900a, and the centre of pivot pendulum portion 622a is articulated in standpipe 500a.Herein It is noted that above-mentioned one end and the other end not specify certain point, but certain element is divided into three sections, is respectively both ends And interlude, and the position relationship for illustrating interelement connection is primarily used to, and since seat stay frame 620a includes connecting portion 621a And pivot pendulum portion 622a, so the both ends of seat stay frame 620a can regard the one end of connecting portion 621a away from pivot pendulum portion 622a as respectively And the one end of pivot pendulum portion 622a away from connecting portion 621a.

On the implementation, the trailing wheel of electric bicycle 110a is articulated in the connecting portion 621a of seat stay frame 620a, therefore, works as trailing wheel , can be with rotation connection 621a actions when beating due to Uneven road, and then make pivot pendulum portion 622a with its pivot joint with standpipe 500a Axis is put for axis pivot, and passes through shock absorber 900a and absorb vibrations.

In the present embodiment, front tube 700a includes radially connected section of 710a, and radially connected section of 710a is connected to down tube 200a's Second end 220a, in other embodiments, front tube 700a can not also include radially connected section of 710a, and allow second end 220a's The outer wall of form fit front tube 700a, be combined with each other both in a manner of glued, and right the utility model structure includes and without being limited thereto.

Although the utility model is disclosed as above with embodiment, so it is not limited to the utility model, any Those skilled in the art, without departing from the spirit and scope of the utility model, when various variations and retouching, therefore this reality can be made With new protection domain when subject to those as defined in claim.

Claims (10)

1. a kind of down tube structure group is connected, which is characterized in that the down tube with standpipe, front tube and the back vent of electric bicycle Structure group includes：

Down tube is made of composite material, and the down tube includes：

First end is connected with the standpipe and the back vent；

Second end is connected with the front tube；And

Accommodation chamber, to set battery；And

Power unit is arranged at the first end of the down tube, and the power unit is electrically connected with the battery.

2. down tube structure group as described in claim 1, which is characterized in that the composite material is carbon fibre material.

3. down tube structure group as claimed in claim 2, which is characterized in that the down tube also includes：

Trunnion mount is arranged on the first end, and the trunnion mount is pivotally connected for the back vent；And

Fixed part is arranged on the first end, and the fixed part compares the trunnion mount adjacent to the second end, the fixation Portion is affixed for shock absorber.

4. down tube structure group as claimed in claim 3, which is characterized in that the trunnion mount, the fixed part and the down tube Pipe shaft is integrally formed or glued connection.

5. down tube structure group as described in claim 1, which is characterized in that the down tube and the standpipe and the front tube are glued Connection.

6. a kind of electric bicycle, which is characterized in that the electric bicycle includes：

Front tube；

Upper tube, its one end are connected with the front tube；

Standpipe, its one end are connected with the other end of the upper tube；

Down tube structure group, is connected with the standpipe and the front tube, and the down tube structure group includes：

Down tube is made of composite material, and the down tube includes：

First end is connected with the standpipe；

Second end is connected with the front tube；

Accommodation chamber, to set battery；

Trunnion mount is arranged on the first end；And

Fixed part is arranged on the first end, and the fixed part compares the trunnion mount adjacent to the second end；And

Power unit is arranged at the first end of the down tube, and the power unit is electrically connected with the battery；

Back vent connects the first end of the down tube, and the back vent includes：

Chain stay frame, its one end are articulated in the trunnion mount；And

Seat stay frame, its one end are connected to the other end of the chain stay frame；And

Shock absorber, with upper end and lower end, the upper end of the shock absorber is hubbed at the other end of the seat stay frame, and institute The fixed part is fixed in the lower end for stating shock absorber.

7. electric bicycle as claimed in claim 6, which is characterized in that the composite material is carbon fibre material.

8. electric bicycle as claimed in claim 7, which is characterized in that the trunnion mount, the fixed part and the down tube Pipe shaft is integrally formed or glued connection.

9. electric bicycle as claimed in claim 8, which is characterized in that the seat stay frame includes：

Connecting portion, its one end are articulated in the other end of the chain stay frame；And

Pivot pendulum portion, its one end are articulated in the other end of the connecting portion, and the other end in the pivot pendulum portion is articulated in the shock absorber The upper end, and the centre in the pivot pendulum portion is articulated in the standpipe.

10. electric bicycle as claimed in claim 9, which is characterized in that the down tube and the standpipe and the front tube glue Close connection.