CN209921511U

CN209921511U - Novel power-assisted electric bicycle frame

Info

Publication number: CN209921511U
Application number: CN201920407960.8U
Authority: CN
Inventors: 杨玉峰
Original assignee: TIANJIN GOLDEN WHEEL XINDE VEHICLE Co Ltd
Current assignee: TIANJIN GOLDEN WHEEL XINDE VEHICLE Co Ltd
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2020-01-10
Anticipated expiration: 2029-03-28

Abstract

The utility model relates to a novel helping hand electric bicycle frame. The lower end of the seat pipe is provided with a middle-mounted motor hanging rack, and the rear end of the oblique beam is welded and fixed with the front part of the middle-mounted motor hanging rack; a battery groove which is not penetrated transversely is arranged in the middle of the oblique beam, a front fixing seat is arranged at the front part of the groove bottom of the battery groove, a rear fixing seat is arranged at the rear part of the groove bottom of the battery groove, a head lock is arranged on the front fixing seat, a tail base is arranged on the rear fixing seat, a battery is arranged in the battery groove, the tail of the battery is connected with the tail base, and the head of the battery is connected with the head lock; the battery comprises an upper box body and a lower box body, wherein a battery core and a circuit board are arranged between the upper box body and the lower box body, a charging terminal and a protective cover covering the charging terminal are arranged on the side surface of the tail part of the lower box body, and an exposed wiring terminal is also arranged at the tail part of the lower box body; and a fixed terminal is arranged at the corresponding position in the tail base. The utility model discloses simple structure, battery and frame combine closely, strong to the protective capacities of battery.

Description

Novel power-assisted electric bicycle frame

Technical Field

The utility model belongs to the technical field of electric bicycle, especially, relate to a novel helping hand electric bicycle frame.

Background

With the progress of the technology and the improvement of the living standard of people, the power-assisted electric bicycle gradually enters the daily life of people and plays an increasingly important role, and the power-assisted electric bicycle is currently an important choice for daily travel of people. The electric bicycle is miniaturized and compact in design, and is the development direction of the current power-assisted electric bicycle, the miniaturized electric bicycle is convenient to store and move, the riding is more convenient, the electric bicycle can be used as a car partner to move along with the car, and the requirement of short-distance riding is met.

The frame is as the important component part of helping hand electric bicycle, has decisive influence to the overall structure intensity of bicycle, ride effect etc.. After many years of development, bicycles and electric bicycles have no particular breakthrough direction on body parts, and the body parts are more optimized in terms of structural ergonomics and are designed delicately to meet aesthetic requirements. For the power-assisted electric bicycle, the reasonable installation of the central motor and the battery has become the main direction of research and development design. Wherein the mounting means of well putting the motor has directly decided vehicle body structure's stability and automobile body equipment and the convenience of maintaining, and the mounting means of battery has directly decided the figurative aesthetic measure of automobile body and the protective effect of battery self. Under the current situation, people prefer the structural design that battery and automobile body fully fuse together, and such motorcycle type is not only handsome in appearance more, because the combination of battery and frame is inseparabler moreover, therefore is better to the protective effect of battery. In the current design, the battery is still installed to the bicycle frame by adopting the battery support, and the requirements of people which are increasingly improved are difficult to meet in both the aspects of aesthetic property and structural strength.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the technical problem that exists among the known art and provide a simple structure, battery and frame combine closely, to the novel helping hand electric bicycle frame that the protective capacities of battery is strong.

The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a novel power-assisted electric bicycle frame comprises a front fork tube, a cross beam, an oblique beam, a seat tube, a bottom fork and a vertical fork, wherein the front ends of the cross beam and the oblique beam are welded and fixed with the front fork tube; the method is characterized in that: the lower end of the seat tube is provided with a middle-mounted motor hanging rack, the rear end of the oblique beam is fixedly welded with the front part of the middle-mounted motor hanging rack, the front end of the bottom fork is fixedly welded with the rear part of the middle-mounted motor hanging rack, and the front end of the vertical fork is fixedly welded with the middle upper part of the seat tube; a battery groove which is not penetrated transversely is arranged in the middle of the oblique beam, a front fixed seat is arranged at the front part of the groove bottom of the battery groove, a rear fixed seat is arranged at the rear part of the groove bottom of the battery groove, a head lock is arranged on the front fixed seat, a tail base is arranged on the rear fixed seat, a battery is arranged in the battery groove, the tail of the battery is in butt joint with the tail base, and the head of the battery is connected with the head lock; the battery comprises an upper box body and a lower box body, wherein a cavity formed between the upper box body and the lower box body is internally provided with a battery core and a circuit board, the side surface of the tail part of the lower box body is provided with a charging terminal and a protective cover covering the charging terminal, and the tail part of the lower box body is also provided with an exposed wiring terminal; and a fixed terminal which is in plug-in fit with the wiring terminal is arranged at the corresponding position in the tail base.

The utility model has the advantages that: the utility model provides a novel helping hand electric bicycle frame that structural design is reasonable compares with current helping hand electric bicycle frame, through put the motor stores pylon in the lower extreme installation of seat pipe among this technical scheme, and it is fixed to be convenient for install to the frame in the order put the motor. The battery groove is formed in the middle of the oblique beam, the head lock is arranged in the front of the battery groove, the tail base is arranged at the rear of the battery groove, the bottom of the battery is sunk into the battery groove, and the combination tightness between the battery and the oblique beam is improved. From the external view, the tightly combined battery and the frame are approximately integrated, so that the aesthetic degree is also improved. On the other hand, because the battery is embedded in the battery groove arranged on the oblique beam, the protection capability of the frame to the battery is also improved. Compare in current adoption battery support to install fixed mode to the battery, the utility model provides a fixed mode of installation can prevent better that the battery from receiving colliding with of external force, also is difficult for droing after receiving external force and colliding with. Through setting up head tool to lock, make the battery can lock on the frame, reduced stolen possibility. Through the arrangement of the tail base with the fixed terminals, the tail of the battery can be quickly connected to the tail base in an inserted mode, meanwhile, the battery is connected with a circuit system of the whole vehicle through the terminals, and the operation is convenient.

Preferably: the battery groove is integrally formed on the pipe section of the oblique beam by adopting a hydraulic forming process.

Preferably: the middle-placed motor hanging rack comprises an arc-shaped top plate located at the middle part, arc-shaped side plates are arranged on two sides of the arc-shaped top plate, the bottom edge profile of each arc-shaped side plate is matched with the profile of a shell of the middle-placed motor, and a plurality of groups of transverse alignment mounting holes are further formed in the two arc-shaped side plates.

Preferably: a front threading hole is formed in the side wall of the front fork tube, a rear threading hole is formed in the front part of an arc-shaped top plate of the middle-mounted motor hanging frame, the tail base is located at the position of the rear threading hole, and a middle threading hole is formed in the front wall of the groove of the battery groove; the forward wiring harness starting from the fixed terminal in the tail base extends forwards in the inner cavity of the oblique beam and penetrates out through the front threading hole, and the backward wiring harness starting from the fixed terminal in the tail base extends into the middle motor hanging frame.

Preferably: the bottom fork includes left bottom fork and right bottom fork, and the vertical fork includes left vertical fork and right vertical fork, and left bottom fork assembles and is equipped with left connection piece with left vertical fork rear end between them, and right bottom fork assembles and is equipped with right connection piece with right vertical fork rear end between them.

Preferably: both the front fixing seat and the rear fixing seat are welded and fixed with the tubular section bar of the oblique beam, and a plurality of threaded holes are formed in the front fixing seat and the rear fixing seat.

Preferably: the upper box body and the lower box body of the battery are buckled and connected by a plurality of buckles respectively positioned on two sides.

Preferably: the front part of the lower box body is provided with a hand groove for carrying the battery.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic diagram of the structure of the battery portion of FIG. 1;

FIG. 3 is a schematic structural view of the portion of the frame of FIG. 1;

FIG. 4 is a schematic diagram of the structure of the battery of FIG. 1;

fig. 5 is a schematic view of the internal structure of the battery.

In the figure: 1. a front fork tube; 2. a front threading hole; 3. a cross beam; 4. an oblique beam; 4-1, head lock; 4-2, a tail base; 4-3, a front fixed seat; 4-4, battery grooves; 4-5, a rear fixed seat; 5. a battery; 5-1, putting the box body on; 5-2, a lower box body; 5-3, hand grooves; 5-4, a protective cover; 5-5, a wiring terminal; 5-6, buckling; 6. a middle motor hanging rack; 6-1, a rear threading hole; 7. a seat tube; 8. a left vertical fork; 9. a right vertical fork; 10. a right bottom fork; 11. a left bottom fork; 12. a right connecting sheet; 13. and a left connecting sheet.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are described in detail:

please refer to fig. 1 to 3, the utility model discloses a novel helping hand electric bicycle frame includes front fork tube 1, crossbeam 3, sloping 4, seat pipe 7, chain stay and vertical fork, and the front end of crossbeam 3 and sloping 4 both all with front fork tube 1 welded fastening, and helping hand electric bicycle's front fork is installed in front fork tube 1.

The lower end of the seat tube 7 is provided with a middle-placed motor hanging rack 6, the rear end of the oblique beam 4 is welded and fixed with the front part of the middle-placed motor hanging rack 6, the front end of the bottom fork is welded and fixed with the rear part of the middle-placed motor hanging rack 6, and the front end of the vertical fork is welded and fixed with the middle upper part of the seat tube 7. In this embodiment, the chain stay includes left chain stay 11 and right chain stay 10, and the chain stay includes left chain stay 8 and right chain stay 9, and left chain stay 11 assembles and is equipped with left connecting piece 13 with left chain stay 8 rear end between them, and right chain stay 10 assembles and is equipped with right connecting piece 12 with right chain stay 9 rear end between them. The rear wheel of the power-assisted electric bicycle is arranged between the left connecting sheet 13 and the right connecting sheet 12.

In this embodiment, the centrally-mounted motor hanger 6 includes an arc-shaped top plate located at the middle, and arc-shaped side plates are arranged on two sides of the arc-shaped top plate. The lower end of the seat pipe 7 is welded and fixed with the arc-shaped top plate, the bottom edge profile of the arc-shaped side plates is matched with the profile of a machine shell of the middle-placed motor, and a plurality of groups of transversely aligned mounting holes are further formed in the two arc-shaped side plates. When the middle-placed motor is installed, the middle-placed motor is pushed into the middle-placed motor hanging frame 6, and the middle-placed motor is positioned by means of the matching between the outline of the machine shell and the arc-shaped side plates. After positioning, a long screw (the shell of the middle motor is also provided with a mounting hole) is inserted into the mounting hole and locked, and then the mounting of the middle motor can be completed.

A battery groove 4-4 which is not penetrated transversely is arranged in the middle of the oblique beam 4, a front fixed seat 4-3 is arranged at the front part of the groove bottom of the battery groove 4-4, a rear fixed seat 4-5 is arranged at the rear part of the groove bottom, a head lock 4-1 is arranged on the front fixed seat 4-3, and a tail base 4-2 is arranged on the rear fixed seat 4-5. In this embodiment, both the front fixing seat 4-3 and the rear fixing seat 4-5 are welded and fixed to the pipe profile of the oblique beam 4, a plurality of threaded holes are formed in both the front fixing seat 4-3 and the rear fixing seat 4-5, and the head lock 4-1 and the tail base 4-2 are respectively connected and fixed to the front fixing seat 4-3 and the rear fixing seat 4-5 by screws.

The concrete shape of the battery groove 4-4 can be seen from fig. 3, the battery groove 4-4 is a depression located in the middle of the tubular profile of the oblique beam 4, and the battery groove 4-4 does not transversely penetrate the whole tubular profile of the oblique beam 4 when seen from the cross section of the oblique beam 4, but is depressed from one side (the left side of the rider in the figure) to a position on the right side of the middle of the tubular profile, and is L-shaped when seen from the cross section. In this embodiment, the battery groove 4-4 is integrally formed on the tubular profile of the sloping beam 4 by a hydraulic forming process. The hydraulic forming process is an existing mature process and has the following principle: the pipe section is placed into a precisely processed die, one end of the pipe section is plugged, a high-pressure water source is filled from the other end of the pipe section, the pipe wall of the pipe section expands and deforms under the action of water pressure, a prefabricated shape can be formed when the pipe wall contacts the inner wall of a die cavity of the die, the die is opened after pressure relief, a finished product is taken out, and the battery groove 4-4 can be formed in the pipe section of the oblique beam 4.

A battery 5 is arranged in the battery groove 4-4, the tail of the battery 5 is in butt joint with the tail base 4-2, the head of the battery 5 is connected with the head lock 4-1, and the battery 5 is stably loaded between the head lock 4-1 and the tail base 4-2 in a normal state. In practical use, the battery 5 slides inwards from the side part and is fixed in the battery groove 4-4, namely, the tail part of the battery 5 is firstly abutted against the tail base 4-2, and then the head part of the battery 5 is inwards inclined until a bolt arranged at a corresponding position in front of the bottom of the lower box body 5-2 is locked with the head lock 4-1.

Referring to fig. 4 and 5, it can be seen that: the battery 5 comprises an upper box body 5-1 and a lower box body 5-2, a battery core and a circuit board are arranged in a cavity formed between the upper box body and the lower box body, a charging terminal and a protective cover 5-4 covering the charging terminal are arranged on the side surface of the tail part of the lower box body 5-2, and an exposed wiring terminal 5-5 is also arranged at the tail part of the lower box body 5-2; and a fixed terminal which is in plug-in fit with the wiring terminal 5-5 is arranged at a corresponding position in the tail base 4-2. The charging terminal and the wiring terminal 5-5 are electrically connected with the circuit board and are managed by the circuit board. The circuit board at least comprises a battery management unit and a charging management unit, which are used for managing when the battery 5 is in a working state and in a charging state, and elements such as a temperature sensor and the like can be arranged in the battery 5 for detecting the internal environment temperature, and a temperature signal is fed back to the circuit board for judging the state of the battery 5. An electric quantity indicating LED lamp can be arranged at a remarkable position on the upper box body 5-1 or the lower box body 5-2 and is used for displaying the current electric quantity information to a user.

As described above, the battery groove 4-4 is a depression in the middle of the tubular profile of the oblique beam 4, and the battery groove 4-4 does not extend transversely through the entire tubular profile of the oblique beam 4 when viewed in the cross section of the oblique beam 4, but is depressed from one side to a position on the right side of the middle of the tubular profile, and is L-shaped, i.e., stepped when viewed in the cross section. Therefore, in order to enhance the bonding strength between the battery 5 and the inclined beam 4, the bottom of the lower case 5-2 may be designed to have a shape corresponding to the step shape of the battery groove 4-4, so that the bottom of the battery 5 is engaged with the battery groove 4-4, thereby further ensuring the compactness of the structure and the bonding tightness.

The battery cell and the circuit board are packaged inside by a complete box body formed by the upper box body 5-1 and the lower box body 5-2, and the sealing ring is arranged between the upper box body 5-1 and the lower box body 5-2 and is bonded by gluing, the anti-dismantling screw connection and other modes to ensure the sealing property inside, so that dust and water vapor are prevented from entering. The charging terminal is arranged on the side portion of the lower box body 5-2 and is convenient to connect with a charging wire, and the protective cover 5-4 is used for protecting the charging terminal in a non-charging state and avoiding entering sundries. The terminal 5-5 is used as a terminal for power output, and after the battery 5 is mounted on the frame, the terminal 5-5 is conducted to a fixed terminal in the tail base 4-2 to supply power to the electric power components of the vehicle body.

The upper box body 5-1 and the lower box body 5-2 can be obtained by integral injection molding, and the upper box body 5-1 and the lower box body 5-2 of the battery 5 are buckled and connected by a plurality of buckles 5-6 respectively positioned at two sides in the embodiment. In order to facilitate taking and placing the disassembled battery 5 (such as taking the battery 5 down and charging indoors), a hand groove 5-3 for lifting the battery 5 is arranged at the front part of the lower box body 5-2.

In this embodiment, a front threading hole 2 is formed in a side wall of the front fork tube 1, a rear threading hole 6-1 is formed in the front portion of an arc-shaped top plate of the mid-motor hanger 6, and the tail base 4-2 is located at the position of the rear threading hole 6-1 (when the tail base 4-2 is mounted on the rear fixing base 4-5, the rear portion of the tail base 4-2 covers the rear threading hole 6-1), and a middle threading hole is formed in the front wall of the groove of the battery groove 4-4. In this way, the forward wiring harness (mainly connected to the vehicle lamp, the controller and the like on the handlebar) from the fixed terminal in the tail base 4-2 extends forwards in the inner cavity of the tubular section bar of the oblique beam 4 and penetrates out through the front threading hole 2, and the backward wiring harness (mainly connected with the mid-motor) from the fixed terminal in the tail base 4-2 extends into the mid-motor hanger 6.

The assembling process comprises the following steps:

each part of the frame is processed in a split mode, and then the front fork tube 1, the cross beam 3, the oblique beam 4, the seat tube 7, the middle-mounted motor hanger 6, the bottom fork and the vertical fork are welded to obtain a complete frame; a front fixing seat 4-3 is welded at the front part of a battery groove 4-4 of the oblique beam 4, a rear fixing seat 4-5 is welded at the rear part, a head lock 4-1 is installed and fixed on the front fixing seat 4-3, and a tail base 4-2 is installed and fixed on the rear fixing seat 4-5. The battery 5 is assembled and charged and then mounted in the battery recess 4-4.

The operation process is as follows:

in the process of taking down the battery, a key is adopted to operate a head lock to open, a lock tongue at the front part of the battery is released, then the head part of the battery is tilted outwards, the battery is pulled out from the front part of the outer side after being tilted for a certain angle, and the tail part of the battery is separated from a tail part base;

in the process of installing the battery, the tail part of the battery is abutted against and inserted on the tail part base, the head part of the battery is inclined inwards until the battery falls into the groove of the battery, at the moment, the tail part of the battery is fully inserted into the tail part base, and the lock tongue at the front part of the battery is locked with the head lock;

in the charging process, the battery may be removed for charging, or the battery may be not removed for charging.

Claims

1. A novel power-assisted electric bicycle frame comprises a front fork tube (1), a cross beam (3), an oblique beam (4), a seat tube (7), a bottom fork and a vertical fork, wherein the front ends of the cross beam (3) and the oblique beam (4) are welded and fixed with the front fork tube (1); the method is characterized in that: a middle-mounted motor hanging rack (6) is mounted at the lower end of the seat tube (7), the rear end of the oblique beam (4) is fixedly welded with the front part of the middle-mounted motor hanging rack (6), the front end of the bottom fork is fixedly welded with the rear part of the middle-mounted motor hanging rack (6), and the front end of the vertical fork is fixedly welded with the middle upper part of the seat tube (7); a battery groove (4-4) which is not penetrated transversely is arranged in the middle of the oblique beam (4), a front fixing seat (4-3) is arranged at the front part of the bottom of the battery groove (4-4), a rear fixing seat (4-5) is arranged at the rear part of the bottom of the battery groove (4-4), a head lock (4-1) is arranged on the front fixing seat (4-3), a tail base (4-2) is arranged on the rear fixing seat (4-5), a battery (5) is arranged in the battery groove (4-4), the tail part of the battery (5) is in butt joint connection with the tail base (4-2), and the head part of the battery (5) is connected with the head lock (4-1);

the battery (5) comprises an upper box body (5-1) and a lower box body (5-2), a battery core and a circuit board are arranged in a cavity formed between the upper box body and the lower box body, a charging terminal and a protective cover (5-4) covering the charging terminal are arranged on the side surface of the tail part of the lower box body (5-2), and an exposed wiring terminal (5-5) is also arranged at the tail part of the lower box body (5-2); and a fixed terminal which is in plug-in fit with the wiring terminal (5-5) is arranged at the corresponding position in the tail base (4-2).

2. The novel power-assisted electric bicycle frame as claimed in claim 1, is characterized in that: the battery groove (4-4) is integrally formed on the pipe section of the oblique beam (4) by adopting a hydraulic forming process.

3. The novel power-assisted electric bicycle frame as claimed in claim 2, is characterized in that: put motor stores pylon (6) including the arc roof that is located the middle part, be equipped with the arc curb plate in the both sides of arc roof, the bottom edge profile of arc curb plate suits with the casing profile of putting the motor in, still is equipped with the horizontal mounting hole of adjusting well of multiunit on two arc curb plates.

4. The novel power-assisted electric bicycle frame as claimed in claim 3, characterized in that: a front threading hole (2) is formed in the side wall of the front fork tube (1), a rear threading hole (6-1) is formed in the front portion of an arc-shaped top plate of the middle motor hanging frame (6), the tail base (4-2) is located at the position of the rear threading hole (6-1), and a middle threading hole is formed in the front wall of a groove of the battery groove (4-4); the forward wiring harness starting from the fixed terminal in the tail base (4-2) extends forwards in the inner cavity of the oblique beam (4) and penetrates out of the front threading hole (2), and the backward wiring harness starting from the fixed terminal in the tail base (4-2) extends into the middle motor hanging frame (6).

5. The novel power-assisted electric bicycle frame as claimed in claim 4, is characterized in that: the bottom fork comprises a left bottom fork (11) and a right bottom fork (10), the vertical fork comprises a left vertical fork (8) and a right vertical fork (9), the rear ends of the left bottom fork (11) and the left vertical fork (8) are converged and provided with a left connecting piece (13), and the rear ends of the right bottom fork (10) and the right vertical fork (9) are converged and provided with a right connecting piece (12).

6. The novel power-assisted electric bicycle frame as claimed in claim 5, is characterized in that: the front fixing seat (4-3) and the rear fixing seat (4-5) are both welded and fixed with the pipe section of the oblique beam (4), and a plurality of threaded holes are formed in the front fixing seat (4-3) and the rear fixing seat (4-5).

7. The novel power-assisted electric bicycle frame as claimed in claim 5, is characterized in that: the upper box body (5-1) and the lower box body (5-2) of the battery (5) are buckled and connected by a plurality of buckles (5-6) respectively positioned at two sides.

8. The novel power-assisted electric bicycle frame as claimed in claim 6, is characterized in that: the front part of the lower box body (5-2) is provided with a hand groove (5-3) for carrying the battery (5).