CN219277715U

CN219277715U - Control mechanism for electric power-assisted vehicle

Info

Publication number: CN219277715U
Application number: CN202223608493.6U
Authority: CN
Inventors: 杨国建; 丁利军
Original assignee: Suzhou Leisger Electric Bike Industry Co ltd
Current assignee: Suzhou Leisger Electric Bike Industry Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-30
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a control mechanism for an electric bicycle, which comprises a bicycle body, a driving mechanism and a battery unit, wherein the driving mechanism comprises a driving bin and a driving shaft, the control mechanism comprises a magnet assembly sleeved on the driving shaft, a control bin attached to the side part of the driving bin, a controller arranged in the control bin, a signal hole formed in the bin wall of the driving bin and communicated with the control bin, the controller comprises a control circuit board electrically connected with the battery unit, and a Hall sensor arranged on the control circuit board, the magnet assembly and the driving shaft synchronously rotate, and the Hall sensor captures magnetic force signals of the magnet assembly through the signal hole. According to the control mechanism, the magnet assembly and the Hall sensor are separated and respectively arranged in the driving bin and the control bin, so that the protection of the magnet assembly and the Hall sensor is enhanced; meanwhile, the Hall sensor is directly arranged on the control circuit board, so that the interference of external signals is avoided, and the Hall signals are more sensitive and accurate.

Description

Control mechanism for electric power-assisted vehicle

Technical Field

The utility model relates to the field of electric power-assisted vehicles, in particular to a control mechanism for an electric power-assisted vehicle.

Background

At present, a control mechanism is usually installed on an electric bicycle to assist a user in realizing control of the speed of the bicycle. The control mechanism comprises a control circuit board, a Hall sensor and a magnet assembly, wherein a user can generate different magnetic force signals according to the movement frequency of the user in the process of riding the electric bicycle, the Hall sensor can capture the corresponding magnetic force signals and output the corresponding Hall signals to the control circuit board, and the control circuit board can control the output power of the motor according to the Hall signals, so that the acceleration or the deceleration in the process of riding is assisted to the user.

However, the existing control mechanism has a magnet assembly and a hall sensor which are generally of an integral structure, and the integral structure is directly mounted on the frame of the electric power assisted vehicle. Because the electric bicycle is used outdoors for a long time, water and dust can possibly permeate into the magnet assembly and the Hall sensor after long-time sun and rain, and the magnet assembly and the Hall sensor fail. Meanwhile, the Hall signal is transmitted between the Hall sensor and the control circuit board through the signal wire, so that the transmission of the Hall signal is easily interfered by external signals, the accuracy of the Hall signal is affected, and the cost is greatly increased.

Disclosure of Invention

The utility model aims to provide a control mechanism which can isolate external signal interference and has long service life.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a control mechanism for electric power assisted vehicle, electric power assisted vehicle includes car body, actuating mechanism and battery cell, actuating mechanism includes the drive storehouse, around its own axial lead direction rotatable locates drive shaft in the drive storehouse, control mechanism is including the cover locate on the drive shaft and be located magnet subassembly in the drive storehouse, paste locate the control storehouse of drive storehouse lateral part, locate controller in the control storehouse, set up in on the storehouse wall of drive storehouse and with communicating signal hole in control storehouse, the controller include with the control circuit board of battery cell electricity connection, locate hall sensor on the control circuit board, magnet subassembly with the synchronous rotation of drive shaft, hall sensor passes through the signal hole catches magnet subassembly's magnetic force signal.

Preferably, the magnet assembly comprises a magnetic ring sleeved on the driving shaft and a plurality of magnets arranged on the magnetic ring at intervals, the signal hole forms a first projection on the magnetic ring along the direction of the central line of the signal hole, and the plurality of magnets and the magnetic ring synchronously move and sequentially pass through the first projection.

Further preferably, a center line direction of the signal hole is perpendicular to an axial line direction of the drive shaft.

Further preferably, the magnetic ring comprises two half rings which are clamped with each other, and a plurality of magnetic holes which are formed in the half rings, and the plurality of magnets are respectively and correspondingly arranged in the plurality of magnetic holes.

Still further preferably, the magnetic ring further includes a plurality of first fixing holes formed in the half ring, and first fixing bolts inserted into the first fixing holes for fixing the half ring to the driving shaft, and each of the first fixing holes is located between two adjacent magnetic holes.

Still preferably, the control mechanism further comprises a maintenance hole formed in the driving bin and a hole plug inserted in the maintenance hole, wherein the maintenance hole forms a second projection on the magnetic ring along the direction of the central line of the maintenance hole, and the plurality of magnets sequentially pass through the second projection in the moving process of the magnets.

Preferably, the control mechanism further comprises a second fixing hole formed in the control bin and a plurality of second fixing bolts inserted into the second fixing hole and used for connecting the controller, and the battery unit is pressed against the control bin and shields the plurality of second fixing bolts.

Further preferably, the control mechanism further comprises a third fixing hole formed in the control bin and a third fixing bolt inserted into the third fixing hole and used for connecting the controller, and the second fixing hole and the third fixing hole are respectively formed in two adjacent bin walls of the control bin.

Preferably, the control bin comprises a bin body and a bin cover arranged on the bin body, and the controller is arranged in the bin cover.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

(1) Through separate magnet subassembly and hall sensor and install respectively in drive storehouse and control storehouse, strengthened the protection to magnet subassembly and hall sensor, avoid oozing water and dust in magnet subassembly and the hall sensor, prolonged control mechanism's life.

(2) Through directly installing hall sensor on control circuit board for control mechanism no longer needs extra signal line to transmit the signal, has not only practiced thrift the cost, has avoided external signal's interference moreover, makes hall signal more sensitive and accurate.

Drawings

FIG. 1 is a schematic diagram illustrating the assembly of a control mechanism on an electric bicycle in accordance with an embodiment of the present utility model;

FIG. 2 is a schematic longitudinal cross-sectional view of a control mechanism and a drive mechanism in an embodiment of the utility model;

FIG. 3 is an exploded schematic view of a control mechanism and a drive mechanism in an embodiment of the present utility model;

FIG. 4 is a schematic view of an assembly of a magnet assembly within a drive housing according to an embodiment of the present utility model;

fig. 5 is an exploded view of a magnet assembly in accordance with an embodiment of the present utility model.

In the figure:

1. a control mechanism; 10. a magnet assembly; 100. a magnetic ring; 1001. a half ring; 1002. a first fixing hole; 1003. a first fixing bolt; 101. a magnet; 102. a magnetic hole; 11. a control bin; 110. a bin body; 111. a bin cover; 12. a controller; 120. a control circuit board; 121. a hall sensor; 13. a signal hole; 14. a maintenance hole; 15. a hole plug; 16. a second fixing hole; 17. a second fixing bolt; 18. a third fixing hole; 19. a third fixing bolt;

2. a vehicle body; 20. a frame; 21. a front wheel; 22. a rear wheel;

3. a driving mechanism; 30. a driving bin; 31. a drive shaft;

4. a battery unit;

5. and a motor.

Detailed Description

The technical scheme of the utility model is further described below with reference to the accompanying drawings.

The utility model relates to an improvement of a control mechanism of an electric power-assisted vehicle, and the improved control mechanism 1 is more sensitive and accurate in signal transmission and long in service life.

Referring to fig. 1-2, there is shown an electric power assisted vehicle comprising a control mechanism 1, a vehicle body 2, a drive mechanism 3 and a battery unit 4. The vehicle body 2 comprises a vehicle frame 20, a front wheel 21 and a rear wheel 22 which are arranged on the vehicle frame 20, the driving mechanism 3 comprises a driving bin 30 and a driving shaft 31 which is rotatably arranged in the driving bin 30 around the direction of the axis of the driving mechanism, and the driving shaft 31 is in transmission connection with the rear wheel 22 and is used for driving the rear wheel 22 to rotate.

The control mechanism 1 comprises a magnet assembly 10 sleeved on a driving shaft 31 and positioned in a driving bin 30, a control bin 11 attached to the side part of the driving bin 30, a controller 12 positioned in the control bin 11, and a signal hole 13 arranged on the bin wall of the driving bin 30 and communicated with the control bin 11. The magnet assembly 10 and the controller 12 are respectively arranged in the driving bin 30 and the control bin 11, so that protection of the magnet assembly and the controller can be maximally realized, and the service life of the control mechanism 1 is prolonged.

Referring to fig. 2 to 4, the controller 12 includes a control circuit board 120 electrically connected to the battery unit 4, and a hall sensor 121 provided on the control circuit board 120, and the magnet assembly 10 rotates in synchronization with the driving shaft 31, and the hall sensor 121 captures a magnetic force signal of the magnet assembly 10 through the signal hole 13. The arrangement can save the use of signal wires, thereby saving the cost and avoiding the interference of external signals.

In this example, the driving bin 30 is tubular and is coaxially arranged with the driving shaft 31, and the driving bin 30 and the control bin 11 are made of aluminum alloy materials, which have the effect of shielding magnetic force and signals, and can prevent the interference of the outside on the magnet 101 and the hall sensor 121.

In summary, when a user uses the electric bicycle using the control mechanism 1, the driving shaft 31 can rotate along with riding of the user, the magnet assembly 10 and the driving shaft 31 synchronously rotate, each part of the surface of the magnet assembly passes through the signal hole 13 in sequence, the hall sensor 121 can capture the magnetic force signal of the rotating magnet assembly 10 through the signal hole 13, and then output the hall signal to the control circuit board 120, and the control circuit board 120 can assist the user to realize speed control of the electric bicycle according to the hall signal.

As a preferred solution, as shown in fig. 2 and 5, the magnet assembly 10 includes a magnetic ring 100 sleeved on the driving shaft 31, and a plurality of magnets 101 spaced on the magnetic ring 100, wherein the signal hole 13 forms a first projection on the magnetic ring 100 along the direction of its own center line, and the plurality of magnets 101 move synchronously with the magnetic ring 100 and sequentially pass through the first projection. In this example, the number of the signal holes 13 is two, the magnetic ring 100 includes two half rings 1001 that are clamped with each other, and a plurality of magnetic holes 102 that are formed on the half rings 1001, the two half rings 1001 are wrapped on the driving shaft 31 and are connected through a fastening structure, the fastening structure includes a boss and a groove that are formed on two end surfaces of the half rings 1001, and when the two half rings 1001 are assembled into the magnetic ring 100, the boss and the groove of the two end surfaces that are correspondingly connected with each other are correspondingly inserted. Meanwhile, the magnetic ring 1001 further includes a plurality of first fixing holes 1002 respectively provided between each adjacent two of the magnetic holes 102, and first fixing bolts 1003 inserted into the first fixing holes 1002 for fixing the half ring 1001 to the driving shaft 31. During rotation of the magnetic ring 100, the plurality of magnets 101 sequentially pass through the two first projections, and when the magnets 101 coincide with the first projections, a magnetic force signal is transmitted through the signal hole 13 and captured by the hall sensor 121.

In this example, three magnetic holes 102 are formed in each half ring 1001, and a magnet 101 is disposed in each magnetic hole 102; two first fixing holes 1002 are provided on each half ring 1001.

Further, the center line direction of the signal hole 13 is perpendicular to the axis line direction of the driving shaft 31, so that the output magnetic force signal can be ensured to be strongest.

Still further preferably, as shown in fig. 2, the control mechanism 1 further includes a maintenance hole 14 formed in the driving bin 30, and a hole plug 15 inserted into the maintenance hole 14, wherein the maintenance hole 14 is a threaded hole, the hole plug 15 is a bolt, the maintenance hole 14 forms a second projection on the magnetic ring 100 along its own center line direction, the center line direction of the maintenance hole 14 is perpendicular to the axis line direction of the driving shaft 31, and the plurality of magnets 101 sequentially pass through the second projection during the movement thereof. In this example, the magnetic ring 100 is a plastic member, the driving shaft 31 is a steel shaft, and the magnet 101 is embedded in the magnetic hole 102 and is attracted to the driving shaft 31. In this way, when the magnetic force of a certain magnet 101 disappears due to damage, the maintenance personnel only needs to rotate the damaged magnet 101 to overlap with the second projection, then unscrew the hole plug 15, take out the damaged magnet 101 through the maintenance hole 14 and replace the new magnet 101, and the maintenance is convenient and quick.

In this embodiment, as shown in fig. 1, the control mechanism 1 further includes a motor 5 provided on the rear wheel 22 for controlling rotation of the rear wheel 22, and the control circuit board 120 is used for controlling output power of the motor 5 according to the hall signal, thereby assisting the user in increasing or decreasing the rotation speed of the rear wheel 22.

Specifically, first, the control circuit board 120 needs to detect whether the vehicle is being ridden. When there is a hall signal, it indicates that the vehicle is in a riding state.

Next, the control circuit board 120 needs to determine whether the rotation of the drive shaft 31 is normal rotation or reverse rotation. If the user rotates forward, the user is indicated to travel forward intentionally; if the user is reversing or not rotating, the user is in neutral sliding or intentionally slowly slowing down.

Finally, the control circuit board 120 needs to detect the riding speed. The rotation frequency of the drive shaft 31 is determined based on the frequency of the forward rotation hall signal, and the intention of the user is determined. When the rotation frequency is from low to high, the user wants to accelerate, and the control circuit board 120 increases the output power of the motor 5, so as to assist the user in accelerating the electric power-assisted vehicle; when the rotation frequency is kept unchanged, indicating that the user intentionally keeps the current traveling speed, the control circuit board 120 adjusts the output power of the motor 5 to maintain the current traveling speed; when the rotation frequency becomes low, the user may climb a slope or rest, and the control circuit board 120 may control the motor 5 to maintain the current output power so as to maintain the current speed; when the control circuit board 120 detects a braking signal, the output of the motor 5 is cut off to match with a user to realize the braking of the electric power-assisted vehicle.

As shown in fig. 1 and 3, the control mechanism further includes a second fixing hole 16 formed in the control cabin 11, and a plurality of second fixing bolts 17 inserted into the second fixing hole 16 and used for connecting the controller 12, where the battery unit 4 is pressed against the control cabin 11 and shields the plurality of second fixing bolts 17. In this example, since the control cabin 11 is welded on the frame 20 and the controller 12 is fixed by the two second fixing bolts 17, when the controller 12 needs to be taken out, the battery unit 4 needs to be taken out first, and then the second fixing bolts 17 can be operated, which greatly increases the anti-theft effect of the controller 12, so that a thief cannot easily steal the controller 12.

Further, the control mechanism 1 further comprises a third fixing hole 18 arranged on the control cabin 11, and a third fixing bolt 19 inserted into the third fixing hole 18 and used for connecting the controller 12, and the second fixing hole 16 and the third fixing hole 18 are respectively arranged on two adjacent cabin walls of the control cabin 11. The third fixing bolt 19 can cooperate with the second fixing bolt 17 to fix the controller 12.

Further, the control cabin 11 includes a cabin body 110 and a cabin cover 111, the controller 12 is disposed in the cabin cover 111 and is mounted in the cabin body 110 together with the cabin cover 111, wherein the cabin cover 111 has two through holes matched with the second fixing holes 16 for the second fixing bolts 17 to penetrate from the second fixing holes 16 and connect with the controller 12.

In summary, the control mechanism of the present embodiment has the following advantages:

(1) Through separating magnet assembly 10 and hall sensor 121 and installing respectively in drive storehouse 30 and control storehouse 11, strengthened the protection to magnet assembly 10 and hall sensor 121, avoid oozing water and sand dust in magnet assembly 10 and the hall sensor 121, prolonged control mechanism 1's life.

(2) By directly mounting the hall sensor 121 on the control circuit board 120, the control mechanism 1 does not need an additional signal line to transmit signals, so that not only is the cost saved, but also the interference of external signals is avoided, and the hall signals are more sensitive and accurate.

(3) By providing the service hole 14 and the hole plug 15, the repair and replacement of the damaged magnet 101 is greatly facilitated.

(4) By shielding the second fixing bolt 17 fixing the controller 12 at the bottom of the battery unit 4, the antitheft effect of the controller 12 is greatly enhanced.

The working procedure of this embodiment is specifically described below: when a user uses the electric bicycle provided with the control mechanism, the driving shaft 31 rotates along with riding of the user, the magnetic ring 100 and the driving shaft 31 synchronously rotate, in the rotating process of the magnetic ring 100, six magnets 101 sequentially pass through two first projections, when the magnets 101 are overlapped with the first projections, magnetic force signals are transmitted through the signal holes 13 and captured by the Hall sensors 121, then the Hall sensors 121 output Hall signals to the control circuit board 120, and the control circuit board 120 controls the output power of the motor 5 according to the Hall signals, so that the acceleration or the deceleration of the electric bicycle is assisted by the user.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims

1. A control mechanism for electric power assisted vehicle, electric power assisted vehicle includes car body, actuating mechanism and battery cell, actuating mechanism includes the drive storehouse, around its own axial lead direction rotatable locates drive shaft in the drive storehouse, its characterized in that: the control mechanism comprises a magnet assembly sleeved on the driving shaft and positioned in the driving bin, a control bin attached on the side part of the driving bin, a controller arranged in the control bin, a signal hole which is formed in the bin wall of the driving bin and communicated with the control bin, and a Hall sensor arranged on the control circuit board and comprising a control circuit board electrically connected with the battery unit, wherein the magnet assembly and the driving shaft synchronously rotate, and the Hall sensor captures magnetic signals of the magnet assembly through the signal hole.

2. A control mechanism for an electric power assisted vehicle according to claim 1, characterized in that: the magnet assembly comprises a magnetic ring sleeved on the driving shaft and a plurality of magnets arranged on the magnetic ring at intervals, the signal hole forms a first projection on the magnetic ring along the direction of the central line of the signal hole, and the plurality of magnets and the magnetic ring synchronously move and sequentially pass through the first projection.

3. A control mechanism for an electric power assisted vehicle according to claim 2, characterized in that: the central line direction of the signal hole is perpendicular to the axial line direction of the driving shaft.

4. A control mechanism for an electric power assisted vehicle according to claim 2, characterized in that: the magnetic ring comprises two semi-rings which are clamped with each other, and a plurality of magnetic holes which are formed in the semi-rings, and the plurality of magnets are respectively and correspondingly arranged in the plurality of magnetic holes.

5. A control mechanism for an electric power assisted vehicle as claimed in claim 4, wherein: the magnetic ring further comprises a plurality of first fixing holes formed in the semi-ring and first fixing bolts inserted into the first fixing holes and used for fixing the semi-ring on the driving shaft, and each first fixing hole is located between two adjacent magnetic holes.

6. A control mechanism for an electric power assisted vehicle according to claim 2, characterized in that: the control mechanism further comprises a maintenance hole formed in the driving bin and a hole plug inserted in the maintenance hole, wherein the maintenance hole forms second projection on the magnetic ring along the direction of the central line of the maintenance hole, and the magnets sequentially pass through the second projection in the moving process of the magnets.

7. A control mechanism for an electric power assisted vehicle according to claim 1, characterized in that: the control mechanism further comprises a second fixing hole formed in the control bin and a plurality of second fixing bolts inserted into the second fixing hole and used for connecting the controller, and the battery unit is pressed against the control bin and shields the plurality of second fixing bolts.

8. A control mechanism for an electric power assisted vehicle as claimed in claim 7, wherein: the control mechanism further comprises a third fixing hole formed in the control bin and a third fixing bolt inserted into the third fixing hole and used for connecting the controller, and the second fixing hole and the third fixing hole are respectively formed in two adjacent bin walls of the control bin.

9. A control mechanism for an electric power assisted vehicle according to claim 1, characterized in that: the control bin comprises a bin body and a bin cover arranged on the bin body, and the controller is arranged in the bin cover.