Automatic turning-on and turning-off device of steering lamp of electric vehicle
By designing a steering switch device, an automatic switching device including a steering light, a steering switch device, a return sensor to detect the steering device, and a steering device, the problem of the automatic switching device of the steering light in the prior art is solved. By designing a steering switch device, the problem of the steering switch device in the prior art that the turn signal is forgotten or damaged and cannot be turned off is solved, thereby improving safety.
Patent Information
- Application Number
- CN202421869520.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-08-02
AI Technical Summary
The turn signal switch of existing electric vehicles may fail to turn off automatically due to forgetfulness or damage, leading to the hidden danger of misjudgment of traffic accidents.
An automatic switching device is designed, which includes a turn signal lamp, a turn switch, a return sensor, a controller, a digital-to-analog converter and a power amplifier. The return sensor detects the rotation angle of the steering shaft and automatically turns off the turn signal when it returns to the center position. The combination of digital-to-analog conversion and power amplifier ensures reliable signal transmission.
The automatic shutoff of the turn signal lamp is realized, thereby reducing misoperation caused by forgetfulness or switch damage, improving safety, solving the misoperation of the turn signal lamp in the prior art, and improving safety.
Smart Images
Figure CN223371019U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, in particular to an automatic switch device for a turn signal lamp of an electric vehicle. Background Art
[0002] The electric vehicles (also known as handle-type vehicles) referred to in this application mainly refer to two-wheeled or three-wheeled electric bicycles, electric motorcycles, etc. Electric vehicles are equipped with turn signals. In terms of turn signal control, they are generally set as traditional handle-type switches, which have the characteristics of low price and simple operation. However, these traditional switches have some invisible safety hazards when operating.
[0003] Since traditional handle switches cannot reset themselves and can only be reset by external force, it is easy to forget to turn the switch back to its original position when turning or changing lanes, causing the left (or right) turn signal to remain on, leading to misjudgment of the vehicle behind and a high probability of a rear-end collision.
[0004] For this reason, the present applicant has studied a kind of automatic switch device of the turn signal lamp of electric vehicle. Utility Model Content
[0005] The technical problem to be solved by the utility model is to overcome the defects of the prior art and propose an automatic switch device for the turn signal of an electric vehicle. When the turn signal cannot be turned off due to forgetting or the switch is damaged, the turn signal can be automatically turned off with the help of this device.
[0006] Compared with the existing technology, the utility model proposes an automatic switch device for the turn signal of an electric vehicle, including a turn signal, a turn switch and a controller. The turn switch is for user operation and also includes a return sensor. The return sensor is used to detect the rotation angle of the steering shaft. The return sensor is electrically connected to the controller. When the return sensor detects that the rotation angle of the steering shaft is within the return angle range, the return sensor sends a shutdown signal to the controller, and the controller turns off the turn signal.
[0007] As an improvement, it further includes a level converter, the steering switch is electrically connected to the level converter, the level converter is electrically connected to the controller, and the level signal generated by the steering switch is converted by the level converter into a low level signal and sent to the controller.
[0008] As an improvement, it also includes a first digital-to-analog converter and a second digital-to-analog converter, which are electrically connected to the controller respectively. The first digital-to-analog converter converts the left-turn digital signal into a left-turn analog signal, and the second digital-to-analog converter converts the right-turn digital signal into a right-turn analog signal.
[0009] As an improvement, it also includes a left-turn power amplifier and a right-turn power amplifier. The first digital-to-analog converter is electrically connected to the left-turn power amplifier, the second digital-to-analog converter is electrically connected to the right-turn power amplifier, the left-turn power amplifier is electrically connected to the left turn light, and the right-turn power amplifier is electrically connected to the right turn light.
[0010] As an improvement, the controller further includes a flicker controller, and the controller outputs a flicker digital signal to the first digital-to-analog converter and the second digital-to-analog converter simultaneously through the flicker controller.
[0011] After adopting the above structure, compared with the prior art, the utility model has the following advantages:
[0012] In the present disclosure, the user operates the steering switch to send a left turn signal / right turn signal to the controller. After receiving the left turn signal / right turn signal, the controller controls the turn signal (including the left turn signal and the right turn signal) to light up accordingly. It also includes a return sensor, such as a magnetic encoding sensor, which automatically detects the rotation angle of the steering shaft of the handlebar vehicle through the return sensor. When the return sensor detects that the rotation angle of the steering shaft is in the return angle range, the return sensor sends a shutdown signal to the controller, and the controller automatically turns off the turn signal. Therefore, when the turn signal cannot be turned off due to forgetting or the switch is damaged, the turn signal can be automatically turned off with the help of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The present invention is a schematic diagram of the block structure of an automatic switch device for a turn signal of an electric vehicle. DETAILED DESCRIPTION
[0014] The following description is intended to disclose the present invention and enable those skilled in the art to implement the present invention. The embodiments described below are provided for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.
[0015] The utility model is further described in detail below:
[0016] like Figure 1 The figure shows an automatic switch device for the turn signal of an electric vehicle, which includes a turn signal, a turn switch and a controller. The turn switch is for user operation and also includes a return sensor. The return sensor is used to detect the rotation angle of the steering shaft. The return sensor is electrically connected to the controller. When the return sensor detects that the rotation angle of the steering shaft is within the return angle range, the return sensor sends a shutdown signal to the controller, and the controller turns off the turn signal.
[0017] In some embodiments, a level converter is further included. The steering switch is electrically connected to the level converter, which is electrically connected to the controller. The level converter converts the level signal generated by the steering switch into a low-level signal and transmits it to the controller. This facilitates isolation and protects the controller.
[0018] In some embodiments, the controller further includes a first digital-to-analog converter and a second digital-to-analog converter, each electrically connected to the controller. The first digital-to-analog converter converts the left-turn digital signal into a left-turn analog signal, and the second digital-to-analog converter converts the right-turn digital signal into a right-turn analog signal. This allows a small signal to be used to control a large signal.
[0019] In some embodiments, the system further includes a left turn signal power amplifier and a right turn signal power amplifier. The first digital-to-analog converter is electrically connected to the left turn signal power amplifier, the second digital-to-analog converter is electrically connected to the right turn signal power amplifier, the left turn signal power amplifier is electrically connected to the left turn signal light, and the right turn signal power amplifier is electrically connected to the right turn signal light. The left turn signal power amplifier and the right turn signal power amplifier may be transistors, MOS transistors, or the like, so as to reliably illuminate the turn signal light.
[0020] In some embodiments, the device further includes a flashing controller, which simultaneously outputs a flashing digital signal to the first DAC and the second DAC via the flashing controller. Thus, even when the rotation angle is within the return angle range, the double flash state is maintained because the flashing controller continuously outputs the flashing digital signal. The flashing controller can be a standalone chip or a program within the controller. Specifically, upon receiving a double flash button signal, the program causes the controller to output a flashing digital signal to the first DAC and the second DAC, ignoring the shutdown signal sent by the return sensor to the controller.
[0021] The controller and the flash controller can both be implemented using a 51 single chip microcomputer, for example. Of course, implementing the controller using a program is the most cost-effective. The return sensor can be a Hall sensor.
[0022] The above description is merely an illustrative embodiment of the present invention, and therefore any equivalent changes or modifications made according to the structure, features and principles described in the scope of protection of the present invention are included in the scope of protection of the present invention.
Claims
1. An automatic switch device for a turn signal of an electric vehicle, comprising a turn signal, a turn switch and a controller, wherein the turn switch is operated by a user, and is characterized in that: The vehicle further includes a return sensor for detecting the rotation angle of the steering shaft. The return sensor is electrically connected to the controller. When the return sensor detects that the rotation angle of the steering shaft is within the return angle range, the return sensor sends a shutoff signal to the controller, and the controller turns off the turn signal. It also includes a first digital-to-analog converter and a second digital-to-analog converter, which are electrically connected to the controller respectively. The first digital-to-analog converter converts the left-turn digital signal into a left-turn analog signal, and the second digital-to-analog converter converts the right-turn digital signal into a right-turn analog signal.
2. The automatic switch device for the turn signal of an electric vehicle according to claim 1, characterized in that: It also includes a level converter, the steering switch is electrically connected to the level converter, the level converter is electrically connected to the controller, and the level signal generated by the steering switch is converted by the level converter into a low level signal and sent to the controller.
3. The automatic switch device for the turn signal of an electric vehicle according to claim 1, characterized in that: It also includes a left-turn power amplifier and a right-turn power amplifier. The first digital-to-analog converter is electrically connected to the left-turn power amplifier, the second digital-to-analog converter is electrically connected to the right-turn power amplifier, the left-turn power amplifier is electrically connected to the left turn light, and the right-turn power amplifier is electrically connected to the right turn light.
4. The automatic switch device for the turn signal of an electric vehicle according to claim 1, characterized in that: The controller further includes a flashing controller, and the controller outputs a flashing digital signal to the first digital-to-analog converter and the second digital-to-analog converter simultaneously through the flashing controller.