CN210793498U

CN210793498U - Tubular middle-arranged motor and frame for electric power-assisted bicycle

Info

Publication number: CN210793498U
Application number: CN202020798692.XU
Authority: CN
Inventors: 蒋建伟
Original assignee: Changzhou Jiabo Machinery Manufacturing Co ltd
Current assignee: Changzhou Jiabo Machinery Manufacturing Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2020-06-19
Anticipated expiration: 2030-05-14

Abstract

The utility model relates to a tubular middle-arranged motor for an electric power-assisted bicycle, which is provided with a motor and a reducer; the output end of the motor is connected with the input end of the speed reducer; the middle shaft mechanism is vertical to the output end of the speed reducer; the speed reducer is connected with the middle shaft mechanism through an output support end; the middle shaft mechanism comprises a power output unit, a shell sleeved on the periphery of the power output unit and a chain wheel connecting seat; the shell is provided with an accommodating cavity for allowing an output part of the output support end to enter the shell; the periphery of the shell is also provided with a fixing unit. The utility model aims at overcoming the defect that prior art exists, providing a motor and frame are put to tubular for electric power-assisted bicycle that small, simple to operate are swift, and mounting structure is stable.

Description

Tubular middle-arranged motor and frame for electric power-assisted bicycle

Technical Field

The utility model relates to an electric bicycle, especially, put motor and frame in electric bicycle is with tubular.

Background

The electric power-assisted bicycle is a novel two-wheel vehicle, belongs to a bicycle, and is provided with a motor by taking a battery as an auxiliary power source, and a power auxiliary system is provided, so that a novel vehicle integrating manpower riding and motor power assisting can be realized.

In the field of power-assisted bicycles, motor mounting positions are mainly divided into a middle motor and a hub motor. Put the motor in, the motor of motor installation in automobile body five-way position department promptly, put the both sides of motor and install pedal, under the motor does not have the condition of power, ride the driving and can realize through pedal that the manpower rides, the resistance does not have the difference with normal bicycle. The hub motor, namely the motor installed in the bicycle hub, has the advantages of performance, technology and the like compared with the hub motor. The existing built-in motor is a built-in motor of an external hanging type, and has relatively large volume and large occupied space.

Disclosure of Invention

The utility model aims at overcoming the defect that prior art exists, providing a motor and frame are put to tubular for electric power-assisted bicycle that small, simple to operate are swift, and mounting structure is stable.

Realize the utility model discloses the technical scheme of purpose is: a tubular middle motor for an electric power-assisted bicycle is provided with a motor and a speed reducer; the output end of the motor is connected with the input end of the speed reducer; the middle shaft mechanism is vertical to the output end of the speed reducer; the speed reducer is connected with the middle shaft mechanism through an output support end; the middle shaft mechanism comprises a power output unit, a shell sleeved on the periphery of the power output unit and a chain wheel connecting seat; the shell is provided with an accommodating cavity for allowing an output part of the output support end to enter the shell; the periphery of the shell is also provided with a fixing unit.

Further, the power output unit comprises a power output shaft, a driven gear and bearings arranged on two sides of the driven gear; the driven gear is fixedly sleeved on the power output shaft.

Further, the fixing unit is integrally formed with the housing.

Further, the fixing unit comprises a locking block and a mounting seat; the latch segment is parallel to the axial setting of shell, just the bolt hole has been seted up on the latch segment.

Further, the mounting seat is formed on the periphery of the accommodating cavity, and bolt holes are formed in the mounting seat.

A frame used for installing the tubular mid-motor for the electric power-assisted bicycle is provided with a lower pipe, a chain stay and a seat pipe; the rear end of the lower pipe, the front end of the chain stay and the lower end of the seat pipe are connected; a positioning seat is additionally arranged at the joint of the lower pipe, the chain support and the seat pipe; the rear half part of the lower pipe is provided with a hollow cavity; a mounting hole is formed at the joint of the positioning seat and the lower pipe; the mounting hole is communicated with the hollow cavity; the mounting hole is matched with the mounting seat.

A frame used for installing the tubular mid-motor for the electric power-assisted bicycle is characterized in that a clamping groove is formed in a positioning seat between chain stays; the clamping groove is matched with the locking block, and through bolt holes are formed in two sides of the clamping groove.

After the technical scheme is adopted, the utility model discloses following positive effect has: the structure adopted by the main driving gear and the driven gear in the structure improves the problem of larger volume caused by the bevel gear set in the prior art to a certain extent, thereby optimizing the volume of the middle shaft mechanism. In addition, in the process of installing the tubular middle-placed motor, the locking block is installed in a matched mode with the clamping groove, the bolt is used for locking connection, in addition, the installation seat is installed in a matched mode with the positioning seat, and the bolt is locked, one axial displacement of the middle shaft mechanism is limited, the other radial displacement of the middle shaft mechanism is limited, the installation structure is stable, the installation process is simple, the operation is convenient, and the middle-placed motor installing device is suitable for popularization.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which

Fig. 1 is a schematic perspective view of a tubular mid-motor according to the present invention;

fig. 2 is an explosion structure diagram of the tubular mid-motor of the present invention;

FIG. 3 is a schematic view of the three-dimensional structure of the frame of the present invention;

fig. 4 is a left side view of the frame of the present invention;

fig. 5 is a schematic view of the overall structure of the present invention;

fig. 6 is a rear view of the overall structure of the present invention.

The reference numbers in the drawings are as follows: the device comprises a motor 1, a speed reducer 2, an output support end 3, a middle shaft mechanism 4, a power output unit 40, a power output shaft 401, driven teeth 402, a shell 41, a fixing unit 42, a locking block 420, a mounting seat 421, a containing cavity 411, a chain wheel connecting seat 44, an upper pipe 5, a lower pipe 6, a steering pipe 7, a chain stay 8, a seat stay 9, a seat pipe 10, a positioning seat 11, a mounting hole 111 and a clamping groove 112.

Detailed Description

See fig. 1 and fig. 2, a put motor in tubular for electric power assisted bicycle has motor 1 and reduction gear 2, and reduction gear 2 here is planetary gear reduction gears, and the output of motor 1 is connected to reduction gear 2's input, the utility model discloses still include with 2 output vertically axis mechanism 4 of reduction gear, support the end 3 through the output between reduction gear 2 and the axis mechanism 4 and be connected, axis mechanism 4 includes power take off unit 40, the cover is established and is established shell 41 and chain wheel connecting seat 44 in power take off unit 40 periphery, set up on the shell 41 and allow the output that output supported end 3 to enter into the inside chamber 411 that holds of shell 41, shell 41 periphery still is provided with fixed unit 42.

More specifically, in this embodiment, the middle axle mechanism 4 further includes end covers installed on two sides of the housing 41, and the installation and fixing manner between the end covers and the housing 41 is only the existing installation and fixing manner, which is not described herein, and the installation of the chain wheel connecting seat 44 is also the existing technology.

More specifically, in the present embodiment, the output of the output support end 3 is a main driving tooth, the power output unit 40 includes a power output shaft 401, a driven tooth 402 and bearings disposed at two sides of the driven tooth 402, the power output shaft 401 includes a middle shaft and a power output sleeve fixed on the middle shaft, the driven tooth 402 is fixed on the power output shaft 401, and the driven tooth 402 is engaged with the main driving tooth of the output support end 3. That is, the motor 1 operates to transmit output to the driving teeth via the reducer 2, and the driving teeth drive the driven teeth 402 to rotate. The driving and driven gears 402 are the gear set shown in fig. 2, the teeth of the gear set are arc-shaped, and the gear set saves a certain space relative to the bevel gear set, so that the volume of the middle shaft mechanism 4 is reduced and the middle shaft mechanism is lighter on the premise that the performance is not changed to a certain extent.

More specifically in this embodiment, the fixing unit 42 is integrally formed with the housing 41, and the fixing unit 42 includes a locking block 420 and a mounting seat 421. The locking block 420 is axially arranged in parallel with the housing 41, and the locking block 420 is provided with a bolt hole. The mounting seat 421 is formed on the periphery of the accommodating cavity 411, and a bolt hole is opened on the mounting seat 421, where the fixing direction of the locking block 420 is the axial direction of the housing 41, and the fixing direction of the mounting seat 421 is the radial direction of the housing 41.

Referring to fig. 3 to 6, a frame for mounting the tube type center motor for the electric bicycle has a down tube 6, a chain stay 8, and a seat tube 10, and a rear end of the down tube 6, a front end of the chain stay 8, and a lower end of the seat tube 10 are connected. The multifunctional seat tube assembly further comprises an upper tube 5, a steering tube 7 and a seat support 9, wherein the steering tube 7 is fixed at the front ends of the upper tube 5 and the lower tube 6, and the seat support 9 and the upper tube 5 are fixed on the upper portion of the seat tube 10. The joint of the lower pipe 6, the chain stay 8 and the seat tube 10 is additionally provided with a positioning seat 11, and the positioning seat 11 can be fixed at the joint of the lower pipe 6, the chain stay 8 and the seat tube 10 by welding. The latter half of low tube 6 sets up to well cavity, and mounting hole 111 has been seted up with the 6 junction of low tube to positioning seat 11, mounting hole 111 and well cavity intercommunication, and mounting hole 111 and mount pad 421 phase-match, and the bolt hole has been seted up with the bolt hole corresponding position department on mount pad 421 on positioning seat 11 to it is fixed with positioning seat 11 locking through the bolt with mount pad 421. The hollow chamber described above is used to house the motor 1 and the reducer 2 and part of the output support 3.

More specifically, in the present embodiment, the chain stays 8 are paired in the vehicle frame, which is the prior art, the positioning seat 11 between the chain stays 8 is provided with the clamping groove 112, the clamping groove 112 is matched with the locking block 420, and two sides of the clamping groove 112 are provided with through bolt holes, the locking block 420 is clamped in the clamping groove 112 during installation, and then the locking installation is performed by using bolts to match nuts.

The utility model discloses a theory of operation does: in the installation process, the middle shaft mechanism 4 is firstly assembled, and then the motor 1, the speed reducer 2 and the output support end 3 are installed. Wherein the motor 1, the speed reducer 2 and a part of the output support end 3 are placed in the hollow cavity, and then the output part of the output support end 3, namely the main driving teeth, is meshed with the driven teeth 402 in the middle shaft mechanism 4; in the working process, the motor 1, the speed reducer 2 and the output support end 3 output step by step, and then are in transmission connection with the driven teeth 402 through the main driving teeth, and the rotation of the driven teeth 402 drives the power output shaft 401 to rotate.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A tubular middle motor for an electric power-assisted bicycle is provided with a motor (1) and a speed reducer (2); the output end of the motor (1) is connected with the input end of the speed reducer (2); the method is characterized in that: the middle shaft mechanism (4) is vertical to the output end of the speed reducer (2); the speed reducer (2) is connected with the middle shaft mechanism (4) through an output support end (3); the middle shaft mechanism (4) comprises a power output unit (40), a shell (41) sleeved on the periphery of the power output unit (40) and a chain wheel connecting seat (44); the shell (41) is provided with an accommodating cavity (411) for allowing the output part of the output support end (3) to enter the shell (41); the periphery of the shell (41) is also provided with a fixing unit (42).

2. The tubular mid-motor for an electric power-assisted bicycle according to claim 1, characterized in that: the power output unit (40) comprises a power output shaft (401), driven teeth (402) and bearings arranged on two sides of the driven teeth (402); the driven gear (402) is fixedly sleeved on the power output shaft (401).

3. The tubular mid-motor for an electric power-assisted bicycle according to claim 1, characterized in that: the fixing unit (42) is integrally formed with the housing (41).

4. The tubular mid-motor for an electric power-assisted bicycle according to claim 1, characterized in that: the fixing unit (42) comprises a locking block (420) and a mounting seat (421); the locking block (420) is arranged in parallel to the axial direction of the shell (41), and a bolt hole is formed in the locking block (420).

5. The tubular mid-motor for an electric power-assisted bicycle according to claim 4, characterized in that: the mounting seat (421) is formed on the periphery of the accommodating cavity (411), and a bolt hole is formed in the mounting seat (421).

6. A frame for mounting the tube type center motor for an electric power assisted bicycle of claim 4 or 5, having a down tube (6), a chain stay (8) and a seat tube (10); the rear end of the lower pipe (6), the front end of the chain stay (8) and the lower end of the seat pipe (10) are connected; the method is characterized in that: a positioning seat (11) is additionally arranged at the joint of the lower pipe (6), the chain stay (8) and the seat pipe (10); the rear half part of the lower pipe (6) is provided with a hollow cavity; a mounting hole (111) is formed at the joint of the positioning seat (11) and the lower pipe (6); the mounting hole (111) is communicated with the hollow cavity; the mounting hole (111) is matched with the mounting seat (421).

7. The frame of claim 6, wherein: a clamping groove (112) is formed in the positioning seat (11) between the chain stays (8); the clamping groove (112) is matched with the locking block (420), and two sides of the clamping groove (112) are provided with through bolt holes.