CN211663374U

CN211663374U - Safety auxiliary device for electric bicycle

Info

Publication number: CN211663374U
Application number: CN201922149841.XU
Authority: CN
Inventors: 王奕文
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-10-13
Anticipated expiration: 2029-12-04

Abstract

The utility model discloses a safety auxiliary device for an electric bicycle, which comprises a hand brake shell which can be arranged on a handlebar at the front part of a frame, wherein the hand brake shell is hinged with a hand brake rod, the hinged end of the hand brake rod is fixedly connected with a shifting block, and an inductive switch driven by the shifting block to act is also arranged in the hand brake shell; the license plate frame at the rear part of the frame is provided with a display capable of prompting driving safety information through an installation frame, and the license plate frame further comprises a controller which is respectively electrically connected with the display, the inductive switch and the electric vehicle battery through cables. The utility model has the advantages of effect: the structure is reasonable, and the warning device can give a prompt or a warning to a pedestrian at the rear part when braking, so that the riding safety is guaranteed; the vehicle can be charged at any time and any place when parking or according to requirements, and smooth home return is guaranteed; the operation is simple, the use is reliable, the installation is simple and easy, the maintenance is simple and convenient, and the universality is strong.

Description

Safety auxiliary device for electric bicycle

Technical Field

The utility model relates to a safety auxiliary device for electric bicycle.

Background

The electric bicycle is commonly called as an electric bicycle, has already been popularized and used for more than ten years in China, almost replaces the traditional bicycle at present, and is very popular in application. The electric motor car is light, small and exquisite, just can realize electric drive through charging and move ahead, is loved by the common people deeply. Particularly, the appearance of high-capacity and high-efficiency batteries such as lithium batteries enables the driving mileage of the electric vehicle to reach dozens or even hundreds of kilometers, and completely meets the daily travel requirement.

Although the traditional electric vehicle has the advantages, the traditional electric vehicle also has the defects that: 1. only the front lamp is provided with no rear tail lamp, or the rear tail lamp cannot be matched with a brake, namely, the rear tail lamp cannot remind rear personnel in time during braking, so that the automobile brake is very unsafe; 2. when the electric vehicle is charged, the electric vehicle is either stopped in a charging area (home or charging station) or the battery is detached and taken to the charging area, so that the limitation is large; or drag long charging wire, which is very inconvenient; particularly, when people are at work or go out and no electricity is available, the charging can only be carried out by pushing the cart, and the charging can not be realized at any time and any place.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a bicycle brake pad which has reasonable structure, can give a prompt or a warning to the rear pedestrians during braking, and ensures the riding safety; the vehicle can be charged at any time and any place when parking or according to requirements, and smooth home return is guaranteed; the safety auxiliary device for the electric bicycle has the advantages of simple operation, reliable use, simple and easy installation, simple and convenient maintenance and strong universality.

For solving above-mentioned technical problem, this safety auxiliary device for electric bicycle has the manual brake pole including installing the manual brake shell on the handlebar of frame front portion on the manual brake shell, and its structural feature is: a shifting block is fixedly connected with the hinged end of the hand brake rod, and an inductive switch driven by the shifting block to act is further installed in the hand brake shell; the license plate frame at the rear part of the frame is provided with a display capable of prompting driving safety information through an installation frame, and the license plate frame further comprises a controller which is respectively electrically connected with the display, the inductive switch and the electric vehicle battery through cables.

In this patent application, a safety assist device for an electric bicycle is mainly composed of a dial, an inductive switch, a display, a controller, and the like. The shifting block is arranged at the hinged end of the hand brake rod of the electric vehicle, and when a rider pulls the hand brake rod, the shifting block fixedly connected with the hinged end of the hand brake rod swings along with the hand brake rod. And the inductive switch is arranged in a hand brake shell of the electric vehicle, and the inductive switch is arranged corresponding to the shifting block. When the shifting block is driven by the hand brake rod to swing, the shifting block triggers the inductive switch. At this time, the inductive switch will generate an inductive signal, which is also representative of the braking signal. The display is a core component created by the invention, and the display is installed on the license plate frame at the rear part of the frame through the installation frame, so that the display can be installed quickly and is more convenient to maintain. The display is mainly used for displaying driving safety reminding information, such as: keeping the distance between vehicles, the road smooth and slow running, paying attention to the safety and the like, and being beneficial to improving the driving safety and keeping the road smooth. The second function of the display is to display prompting information when braking, such as: brake, please note, etc. Or, the display directly fully screens to emit red light, is equivalent to a tail lamp of a traditional automobile and is easy to accept. In the invention, because the license plate frame is generally vertically arranged or vertically and obliquely arranged, the display panel of the display is backwards displayed or obliquely backwards displayed after the display is installed, so that the display is easier to watch by a rear person, the reminding effect is more obvious, and the driving safety is improved. In the invention, the controller is a key component for electrically connecting the inductive switch and the display. The controller has two main functions, one is used for receiving the induction switch signal, namely a brake signal, and the other is used for sending display information to the display. When the vehicle is not braked, safe driving prompt information is displayed; when braking, the brake prompt information is displayed. The electric connection of the controller, the inductive switch and the display is realized through cables, the cables are laid along the frame and fixed through strapping tapes, and the installation is very simple. In the invention, the mounting frame has a simple structure, the main body is a flat plate, the display is fixedly mounted on one side, the stud which is inserted and matched with the screw hole in the license plate frame is fixedly connected to the other side, and the stud is screwed with the nut. During installation, the stud is inserted into the screw hole correspondingly and the nut is screwed down, so that the installation is very simple.

As an improvement, a wireless transceiver module which is in wireless communication with the remote server and is electrically connected with the controller is installed in the shell of the controller.

After the wireless transceiver module is installed in the shell of the controller, the controller electrically connected with the wireless transceiver module has a remote wireless communication function, can perform wireless communication with a remote server, and feeds back basic information such as the position of the electric vehicle to the remote server. Therefore, the remote server can timely master the distribution and accurate positioning of the electric vehicle, and necessary help is provided for electric vehicle theft prevention, electric vehicle rescue and the like. When the owner reports the loss, the remote server can send warning information or prompt alarm information to the display through the wireless transceiver module and the controller, so that other people can give an alarm or provide more valuable information after seeing the prompt, and the vehicle can be recovered in time.

As a further improvement, a power switch for controlling the on-off of a power supply loop of the electric vehicle battery to the controller is arranged on a shell of the controller.

After a power switch is arranged on a shell of the controller, the on-off of a battery of the electric vehicle to a power supply loop of the controller can be controlled by operating the power switch, so that the use or the closing of the display and the controller can be controlled, the electric vehicle is very convenient, is particularly suitable for being used when the electric quantity is insufficient, and is more humanized.

As an improvement, a display switch capable of controlling the on-off of the power supply of the display is arranged on the shell of the display.

After the display switch is arranged on the shell of the display, the on-off of the power supply of the display can be controlled by operating the display switch, so that whether the display works or not can be controlled. If the battery is insufficient, the display is leaked in rain, or the display is damaged, the display switch can be operated to close the display, and the reliability is improved.

As a further improvement, a supporting rod which extends downwards along the display board is fixedly connected to the mounting frame, a buckle cover which can be buckled with the upper half part and the rear half part of the display in a semi-surrounding mode from the rear is hinged to the lower edge of the shell of the display through a transverse hinge shaft, a magnetic block is installed at the swinging end of the buckle cover, the outer end of the magnetic block is correspondingly attracted to the lower part of the supporting rod when the buckle cover is opened downwards, and the inner end of the magnetic block is correspondingly attracted to the upper part of the mounting frame when the buckle cover is buckled upwards.

In this patent application, the rigid coupling has the bracing piece on the mounting bracket, and the bracing piece extends the setting downwards along the display panel. The length of the support rod extending downwards out of the lower edge of the display is larger than the distance between the upper edge and the lower edge of the display, so that enough support space and a connecting and matching space can be reserved for the buckle cover when the buckle cover is opened. The lower edge of the shell of the display is hinged with a buckle cover through a transverse hinge shaft, so that the buckle cover can swing up and down around the transverse hinge shaft. The buckle cover is a cover body with an opening at one end, and the opening part of the buckle cover is slightly larger than the display board so as to be smoothly buckled with the display board. In this patent application, the buckle cover can be from the display rear from upwards together with the display lock down. When the display is fastened, the upper half part and the rear half part of the display are fastened by the fastening cover in a half-surrounding manner, and for convenience of description, the state is referred to as a fastened state, a closed state or a power-off state. When the lock state, detain the cover and not only played the guard action to the display, especially the guard action of display screen, still have the effect of keeping out the wind and keeping out the rain for the display, improved the job stabilization nature and the reliability of this patent application greatly. When the buckle cover swings downwards from the buckling state, the buckle cover is pressed on the supporting rod due to the limit of the supporting rod, and the included angle between the plate surface of the buckle cover and the display plate surface is 180 degrees or close to 180 degrees. For convenience of description, this state is referred to as an on state, or an operating state. In this patent application, the magnetic path is installed to the swing end of detaining the cover, and the magnetic path is detained the cover and is detained mounting bracket and bracing piece locking complex part. For convenience of description, one end of the magnetic block close to the opening of the buckle cover is called an inner end, and one end of the magnetic block close to the back of the buckle cover is called an outer end. When the buckle cover is in an opening state, namely when the buckle cover is opened downwards, the outer end of the magnetic block is tightly attached to the lower part of the supporting rod and correspondingly attracted together, so that the buckle cover is locked on the supporting rod by the magnetic block. Therefore, when the electric vehicle is in a working state, the electric vehicle can not lead to the vertical swing of the buckle cover in the forward movement, and the working reliability is ensured. When the buckle cover is in a buckling state, namely the buckle cover is buckled upwards, the inner end of the magnetic block is tightly attached to the upper part of the mounting frame and correspondingly attracted together, so that the magnetic block locks the buckle cover on the mounting frame. Therefore, the buckling cover and the display are kept in a buckled state in the buckled state. During production and manufacturing, the number of the supporting rods and the number of the magnetic blocks can be determined according to the requirements of suction force.

As an improvement, a display screen which can be overlapped and corresponds to a display panel of the display when the buckle cover is buckled is arranged on the inner wall of the buckle cover, and the display screen is electrically connected with the controller; when the vehicle is braked, the controller controls at least one of the display and the display screen to display red.

After the display screen is arranged on the inner wall of the buckle cover, the display screen is also electrically connected with the controller, so that the safety information can be displayed and prompted under the control of the controller. Thus, in the present patent application, the controller can control the display and the display screen to work at one time. The display screen is at the position of detaining the cover inner wall, enables the display screen and the range upon range of corresponding setting of display panel of display when the lock. When the automobile is braked, the controller controls at least one of the display and the display screen to display red, so that the automobile can be ensured to provide brake prompt information for the personnel behind the automobile. When the controller controls the display and the display screen to simultaneously display red, even if one of the display and the display screen is damaged, the brake information can still be prompted, and the driving safety is greatly guaranteed.

As an improvement, a solar photovoltaic panel which can be overlapped and corresponds to a display panel of the display during buckling is arranged on the outer wall of the buckling cover, and the solar photovoltaic panel is electrically connected with a battery of the electric vehicle through a charger.

After the solar photovoltaic panel is arranged on the outer wall of the buckle cover, solar energy can be converted into electric energy by the solar photovoltaic panel, and power generation can be realized. Because the solar photovoltaic panel is electrically connected with the battery of the electric vehicle through the charger, the battery of the electric vehicle can be charged through the solar photovoltaic panel when the electric quantity is insufficient or the electric vehicle is parked. In this patent application, when the lock state, the solar photovoltaic board is range upon range of corresponding relation with the display panel of display, and the plane of solar photovoltaic board and display screen is parallel arrangement promptly. Like this, when parkking, can with the parking stall towards south, also with solar photovoltaic board towards south, just can utilize the time of parkking to charge the electric motor car, very practical.

As a further improvement, a charging switch which can control the on-off of a charging path from the solar photovoltaic panel to the battery of the electric vehicle is arranged on the buckle cover.

After the charging switch is installed on the buckle cover, the charging switch can control the solar photovoltaic panel to be switched on or off to a charging path of the battery of the electric vehicle, so that when charging is not needed, the charging switch is only required to be turned off, and the operation is very simple.

In conclusion, the safety auxiliary device for the electric bicycle with the structure is reasonable in structure, can give a prompt or a warning to pedestrians at the rear part during braking, and guarantees riding safety; the vehicle can be charged at any time and any place when parking or according to requirements, and smooth home return is guaranteed; the operation is simple, the use is reliable, the installation is simple and easy, the maintenance is simple and convenient, and the universality is strong.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the dial block and the reaction switch when the brake is not applied;

FIG. 3 is a schematic view of a structure of a shift block and a reaction switch during braking;

FIG. 4 is a schematic view of a display, a buckle cover, and a display screen in an open state;

FIG. 5 is a schematic view of a matching structure of the display, the buckle cover and the solar photovoltaic panel in a buckling state;

FIG. 6 is a schematic view of a structure of a conventional electric vehicle with a handle bar and a license plate frame;

FIG. 7 is a state diagram illustrating the use of the first embodiment;

FIG. 8 is a view showing a state of use in a fastened state according to the second embodiment;

FIG. 9 is a diagram illustrating an open state of the second embodiment.

Detailed Description

Example one

As shown in fig. 1, 2, 3 and 7, the safety assist device for an electric bicycle comprises a hand brake housing 2 which can be mounted on a handlebar 1 at the front of a frame 0 and on which a hand brake lever 3 is hinged. The hinged end of the hand brake rod is fixedly connected with a shifting block 4, and an inductive switch 5 driven by the shifting block to act is further installed in the hand brake shell. During actual manufacturing, the inductive switch is a travel switch or a traditional push switch. The license plate frame 6 at the rear part of the frame is provided with a display 7 capable of prompting traffic safety information through a mounting frame 20, and further comprises a controller 10 which is respectively connected with the display, the inductive switch and an electric vehicle battery 9 through cables 8. In this patent application, a safety assist device for an electric bicycle is mainly composed of a dial, an inductive switch, a display, a controller, and the like. The shifting block is arranged at the hinged end of the hand brake rod of the electric vehicle, and when a rider pulls the hand brake rod, the shifting block fixedly connected with the hinged end of the hand brake rod swings along with the hand brake rod. And the inductive switch is arranged in a hand brake shell of the electric vehicle, and the inductive switch is arranged corresponding to the shifting block. When the shifting block is driven by the hand brake rod to swing, the shifting block triggers the inductive switch. At this time, the inductive switch will generate an inductive signal, which is also representative of the braking signal. The display is a core component created by the invention, and the display is installed on the license plate frame at the rear part of the frame through the installation frame, so that the display can be installed quickly and is more convenient to maintain. The display is mainly used for displaying driving safety reminding information, such as: keeping the distance between vehicles, the road smooth and slow running, paying attention to the safety and the like, and being beneficial to improving the driving safety and keeping the road smooth. The second function of the display is to display prompting information when braking, such as: brake, please note, etc. Or, the display directly fully screens to emit red light, is equivalent to a tail lamp of a traditional automobile and is easy to accept. In the invention, because the license plate frame is generally vertically arranged or vertically and obliquely arranged, the display panel of the display is backwards displayed or obliquely backwards displayed after the display is installed, so that the display is easier to watch by a rear person, the reminding effect is more obvious, and the driving safety is improved.

In the invention, the controller is a key component for electrically connecting the inductive switch and the display. The controller has two main functions, one is used for receiving the induction switch signal, namely a brake signal, and the other is used for sending display information to the display. When the vehicle is not braked, safe driving prompt information is displayed; when braking, the brake prompt information is displayed. The electric connection of the controller, the inductive switch and the display is realized through cables, the cables are laid along the frame and fixed through strapping tapes, and the installation is very simple. In the invention, the mounting frame has a simple structure, the main body is a flat plate, the display is fixedly mounted on one side, the stud which is inserted and matched with the screw hole in the license plate frame is fixedly connected to the other side, and the stud is screwed with the nut. During installation, the stud is inserted into the screw hole correspondingly and the nut is screwed down, so that the installation is very simple.

Example two

As shown in fig. 1-5 and 8-9, the second embodiment is different from the first embodiment in that a wireless transceiver module 12 which wirelessly communicates with a remote server 11 and is electrically connected with the controller is installed in the housing of the controller. After the wireless transceiver module is installed in the shell of the controller, the controller electrically connected with the wireless transceiver module has a remote wireless communication function, can perform wireless communication with a remote server, and feeds back basic information such as the position of the electric vehicle to the remote server. Therefore, the remote server can timely master the distribution and accurate positioning of the electric vehicle, and necessary help is provided for electric vehicle theft prevention, electric vehicle rescue and the like. When the owner reports the loss, the remote server can send warning information or prompt alarm information to the display through the wireless transceiver module and the controller, so that other people can give an alarm or provide more valuable information after seeing the prompt, and the vehicle can be recovered in time.

In this embodiment, a power switch 13 for controlling the on/off of the power supply loop of the battery of the electric vehicle to the controller is arranged on the housing of the controller. After a power switch is arranged on a shell of the controller, the on-off of a battery of the electric vehicle to a power supply loop of the controller can be controlled by operating the power switch, so that the use or the closing of the display and the controller can be controlled, the electric vehicle is very convenient, is particularly suitable for being used when the electric quantity is insufficient, and is more humanized.

In this embodiment, a display switch 14 capable of controlling the power on/off of the display is mounted on the housing of the display. After the display switch is arranged on the shell of the display, the on-off of the power supply of the display can be controlled by operating the display switch, so that whether the display works or not can be controlled. If the battery is insufficient, the display is leaked in rain, or the display is damaged, the display switch can be operated to close the display, and the reliability is improved.

In this embodiment, a support rod 21 extending downwards along the display panel is fixedly connected to the mounting frame, a buckle cover 23 capable of being buckled with the upper half part and the lower half part of the display in a semi-surrounding manner from the rear is hinged to the lower edge of the shell of the display through a transverse hinge shaft 22, a magnetic block 24 is installed at the swinging end of the buckle cover, the outer end of the magnetic block is correspondingly attracted to the lower portion of the support rod when the buckle cover is opened downwards, and the inner end of the magnetic block is correspondingly attracted to the upper portion of the mounting frame when the buckle cover is buckled upwards. In this embodiment, the mounting bracket is fixedly connected with a support rod, and the support rod extends downwards along the display board. The length of the support rod extending downwards out of the lower edge of the display is larger than the distance between the upper edge and the lower edge of the display, so that enough support space and a connecting and matching space can be reserved for the buckle cover when the buckle cover is opened. The lower edge of the shell of the display is hinged with a buckle cover through a transverse hinge shaft, so that the buckle cover can swing up and down around the transverse hinge shaft. The buckle cover is a cover body with an opening at one end, and the opening part of the buckle cover is slightly larger than the display board so as to be smoothly buckled with the display board. In this patent application, the buckle cover can be from the display rear from upwards together with the display lock down. When the display is fastened, the upper half part and the rear half part of the display are fastened by the fastening cover in a half-surrounding manner, and for convenience of description, the state is referred to as a fastened state, a closed state or a power-off state. When the lock state, detain the cover and not only played the guard action to the display, especially the guard action of display screen, still have the effect of keeping out the wind and keeping out the rain for the display, improved the job stabilization nature and the reliability of this patent application greatly. When the buckle cover swings downwards from the buckling state, the buckle cover is pressed on the supporting rod due to the limit of the supporting rod, and the included angle between the plate surface of the buckle cover and the display plate surface is 180 degrees or close to 180 degrees. For convenience of description, this state is referred to as an on state, or an operating state. In this patent application, the magnetic path is installed to the swing end of detaining the cover, and the magnetic path is detained the cover and is detained mounting bracket and bracing piece locking complex part. For convenience of description, one end of the magnetic block close to the opening of the buckle cover is called an inner end, and one end of the magnetic block close to the back of the buckle cover is called an outer end. When the buckle cover is in an opening state, namely when the buckle cover is opened downwards, the outer end of the magnetic block is tightly attached to the lower part of the supporting rod and correspondingly attracted together, so that the buckle cover is locked on the supporting rod by the magnetic block. Therefore, when the electric vehicle is in a working state, the electric vehicle can not lead to the vertical swing of the buckle cover in the forward movement, and the working reliability is ensured. When the buckle cover is in a buckling state, namely the buckle cover is buckled upwards, the inner end of the magnetic block is tightly attached to the upper part of the mounting frame and correspondingly attracted together, so that the magnetic block locks the buckle cover on the mounting frame. Therefore, the buckling cover and the display are kept in a buckled state in the buckled state. During production and manufacturing, the number of the supporting rods and the number of the magnetic blocks can be determined according to the requirements of suction force.

In the embodiment, a display screen 25 which can be laminated and corresponds to a display panel of the display when the buckle cover is buckled is arranged on the inner wall of the buckle cover, and the display screen is electrically connected with the controller; when the vehicle is braked, the controller controls at least one of the display and the display screen to display red. After the display screen is arranged on the inner wall of the buckle cover, the display screen is also electrically connected with the controller, so that the safety information can be displayed and prompted under the control of the controller. Thus, in the present patent application, the controller can control the display and the display screen to work at one time. The display screen is at the position of detaining the cover inner wall, enables the display screen and the range upon range of corresponding setting of display panel of display when the lock. When the automobile is braked, the controller controls at least one of the display and the display screen to display red, so that the automobile can be ensured to provide brake prompt information for the personnel behind the automobile. When the controller controls the display and the display screen to simultaneously display red, even if one of the display and the display screen is damaged, the brake information can still be prompted, and the driving safety is greatly guaranteed.

In this embodiment, a solar photovoltaic panel 26 is mounted on the outer wall of the buckle cover, and the solar photovoltaic panel is capable of laminating and corresponding to the display panel of the display when being buckled, and is electrically connected with the battery of the electric vehicle through a charger 27. After the solar photovoltaic panel is arranged on the outer wall of the buckle cover, solar energy can be converted into electric energy by the solar photovoltaic panel, and power generation can be realized. Because the solar photovoltaic panel is electrically connected with the battery of the electric vehicle through the charger, the battery of the electric vehicle can be charged through the solar photovoltaic panel when the electric quantity is insufficient or the electric vehicle is parked. In this patent application, when the lock state, the solar photovoltaic board is range upon range of corresponding relation with the display panel of display, and the plane of solar photovoltaic board and display screen is parallel arrangement promptly. Like this, when parkking, can with the parking stall towards south, also with solar photovoltaic board towards south, just can utilize the time of parkking to charge the electric motor car, very practical.

In this embodiment, the buckle cover is provided with a charging switch 28 capable of controlling the on-off of the charging path from the solar photovoltaic panel to the battery of the electric vehicle. After the charging switch is installed on the buckle cover, the charging switch can control the solar photovoltaic panel to be switched on or off to a charging path of the battery of the electric vehicle, so that when charging is not needed, the charging switch is only required to be turned off, and the operation is very simple.

In this patent application, the controller, the wireless transceiver module, the remote server and the charger are all off-the-shelf products purchased from the market, and the circuit structure and the operation principle thereof belong to the well-known technology, and are not described herein again. During actual production, the controller and the charger can be installed in the battery box together with the electric vehicle battery, and the electric vehicle battery charger is simple and convenient.

Claims

1. Safety auxiliary device for electric bicycle, including installing manual brake shell (2) on handlebar (1) of frame (0) front portion, articulated on the manual brake shell have manual brake pole (3), characterized by: a shifting block (4) is fixedly connected with the hinged end of the hand brake rod, and an inductive switch (5) driven by the shifting block to act is further installed in the hand brake shell; the license plate frame (6) at the rear part of the frame is provided with a display (7) capable of prompting driving safety information through a mounting frame (20), and the license plate frame further comprises a controller (10) which is electrically connected with the display, the inductive switch and the electric vehicle battery (9) through cables (8).

2. The safety assist device for an electric bicycle according to claim 1, wherein: a wireless transceiver module (12) which is in wireless communication with the remote server (11) and is electrically connected with the controller is arranged in the shell of the controller.

3. The safety assist device for an electric bicycle according to claim 2, wherein: and a power switch (13) for controlling the on-off of a power supply loop of the electric vehicle battery to the controller is arranged on the shell of the controller.

4. The safety assist device for an electric bicycle according to claim 3, wherein: the shell of the display is provided with a display switch (14) which can control the on-off of the power supply of the display.

5. The safety assist device for an electric bicycle according to any one of claims 1 to 4, wherein: the display device is characterized in that a support rod (21) extending downwards along the panel surface of the display is fixedly connected onto the mounting rack, a buckle cover (23) capable of being buckled with the upper half part and the lower half part of the display in a semi-surrounding mode is hinged to the lower edge of a shell of the display through a transverse hinge shaft (22), a magnetic block (24) is installed at the swinging end of the buckle cover, the outer end of the magnetic block corresponds to the lower portion of the support rod to be attracted when the buckle cover is opened downwards, and the inner end of the magnetic block corresponds to the upper portion of the mounting rack to be attracted.

6. The safety assist device for an electric bicycle according to claim 5, wherein: a display screen (25) which can be correspondingly laminated with a display panel of the display when the buckle cover is buckled is arranged on the inner wall of the buckle cover, and the display screen is electrically connected with the controller; when the vehicle is braked, the controller controls at least one of the display and the display screen to display red.

7. The safety assist device for an electric bicycle according to claim 6, wherein: the outer wall of the buckle cover is provided with a solar photovoltaic panel (26) which can be in laminated correspondence with the display panel of the display during buckling, and the solar photovoltaic panel is electrically connected with the battery of the electric vehicle through a charger (27).

8. The safety assist device for an electric bicycle according to claim 7, wherein: the buckle cover is provided with a charging switch (28) which can control the solar photovoltaic panel to switch on and off a charging path of the battery of the electric vehicle.