Automobile light adjusting structure and control circuit

Abstract

The utility model discloses an automobile light adjusting structure and a control circuit, which comprise a light support, an aperture opening and closing mechanism and a driving mechanism, the driving mechanism is used for driving a driving wheel of the aperture opening and closing mechanism to rotate, and the driving mechanism comprises a gear, a driver and a gear rotation amount monitoring mechanism, the gear rotation amount monitoring mechanism is used for monitoring whether the gear rotates to a preset angle or not; according to the utility model, through the design of the convex part on the gear and the sensor, the action completion state of the aperture opening and closing mechanism can be monitored under the condition of low cost of a common direct-current gear motor, and compared with the existing mode of using a servo motor and the like, the aperture opening and closing mechanism has the advantage of low cost; and the movable blades are rotationally matched with the LED lamp groups on the movable blades, so that the startup animation can be combined, the aesthetic appreciation of customers is better met, and the diversified requirements of the customers are met.

Description

Technical Field

[0001] This utility model relates to the field of adjustment structures, and in particular to an automotive lighting adjustment structure and control circuit. Background Technology

[0002] Car headlights are typically fitted with a cover to shield and protect the headlights. A mechanism that controls the opening and closing of multiple blades forming the cover uses an aperture opening and closing system. However, this design has the following drawbacks:

[0003] First, a servo motor is needed to control the opening and closing angle of the cover, which requires repeated adjustments and is costly. Second, the blade surface is not aesthetically pleasing and lacks decorative design, which fails to meet the growing aesthetic demands of consumers and thus affects their willingness to purchase to some extent. Utility Model Content

[0004] This utility model provides an automotive headlight adjustment structure and control circuit, which can solve the problem that the existing blade surface lacks decorative design and is difficult to meet consumers' aesthetic needs.

[0005] An automotive headlight adjustment structure includes a headlight bracket, an aperture opening and closing mechanism, and a drive mechanism. The aperture opening and closing mechanism includes multiple movable blades and a drive wheel. When the drive wheel rotates, the multiple movable blades move inward or separate outward. The drive mechanism is used to drive the drive wheel of the aperture opening and closing mechanism to rotate. At least one LED light group is installed on at least one of the movable blades.

[0006] The drive mechanism includes:

[0007] Gears, which mesh with and connect to the drive wheel;

[0008] The driver, whose output is connected to the gear, is used to drive the gear to rotate; and

[0009] The gear rotation monitoring mechanism is electrically connected to the drive and is used to monitor whether the gear has rotated to a predetermined angle.

[0010] The driver is a motor.

[0011] The gear has a connecting part that connects to the driver, and the connecting part has a protrusion. The gear rotation monitoring mechanism is located on the rotation stroke of the protrusion.

[0012] The gear rotation monitoring mechanism includes two sensors, with a protrusion located between the two sensors. The two sensors are fixedly mounted on the driver's mounting bracket or the light bracket.

[0013] The sensor is a contact sensor.

[0014] A control circuit for use in an automotive lighting adjustment structure includes at least an MCU, an LED driver circuit connected to the MCU, a motor driver module, and a sensor signal input circuit.

[0015] The output of the sensor signal input circuit is connected to the MCU, the input of the LED driver circuit and the motor driver module is connected to the MCU, and the output of the motor driver module is connected to the motor.

[0016] The LED driving circuit includes multiple LED driving sub-circuits that correspond one-to-one with the LED light groups on the multiple movable blades.

[0017] It also includes a motor current detection circuit, the input of which is connected to the output of the motor drive module, and the output of which is connected to the MCU.

[0018] Compared with the prior art, the beneficial effects of this utility model are: through the design of the gear protrusion and sensor, this utility model can monitor the completion status of the aperture opening and closing mechanism at low cost using a common DC geared motor. Compared with the existing methods such as using servo motors, it has the advantage of low cost.

[0019] In addition, this utility model is equipped with LED light groups on the movable blades. When turned on, the rotation of the movable blades, together with the LED light groups on the movable blades, can create a startup animation, which is more in line with the customer's aesthetics and meets the diverse needs of the customer. Attached Figure Description

[0020] Figure 1 A schematic diagram of the automotive headlight adjustment mechanism;

[0021] Figure 2 A schematic diagram of the internal structure of a car headlight adjustment mechanism;

[0022] Figure 3 A schematic diagram of the gear and gear rotation monitoring mechanism;

[0023] Figure 4 This is a circuit diagram of an LED driver circuit.

[0024] Figure 5 This is the circuit diagram of the motor drive module;

[0025] Figure 6 This is a circuit diagram for the sensor signal and constant power input circuit.

[0026] Figure 7 This is the circuit diagram for the MCU.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1-Light bracket, 2-Moving blade, 3-Drive wheel, 4-LED light assembly, 5-Sensor, 6-Gear, 7-Protrusion, 8-Fixed bracket. Detailed Implementation

[0029] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0030] Example 1

[0031] like Figures 1 to 3 As shown, the present invention provides a car headlight adjustment structure, including a headlight bracket 1, an aperture opening and closing mechanism and a drive mechanism, wherein the aperture opening and closing mechanism is an existing structure, and the aperture opening and closing mechanism and the drive mechanism are installed inside the headlight bracket 1.

[0032] Specifically, the aperture opening and closing mechanism includes multiple movable blades 2 and a drive wheel 3. At least one movable blade 2 is equipped with at least one LED light group 4. Specifically, in this embodiment, at least one LED light group 4 is installed on each of the multiple movable blades 2. When opened, the rotation of the movable blade 1 and the LED light group on the movable blade 2 can be combined to create a startup animation, which is more in line with the customer's aesthetics and meets the customer's diverse needs.

[0033] The drive wheel 3 has the freedom to rotate within the light bracket 1. That is, the drive wheel 3 is rotatably mounted within the light bracket 1. Each movable blade 2 is hinged to the light bracket 1. In addition, the drive wheel 3 is connected to multiple movable blades 2 one-to-one through multiple connecting rods. Specifically, the two ends of the connecting rods are hinged to the drive wheel 3 and the movable blade 2 respectively. When the drive wheel 3 rotates, the movable blade 2 can swing around its connection point on the light bracket 1 through the transmission of the connecting rods, thereby realizing opening and closing. This opening and closing method is the existing structure, so it is not shown or marked in the figure.

[0034] The drive wheel 3 has teeth. When the drive wheel 3 rotates, multiple movable blades 2 move inward or separate outward. The drive mechanism in this embodiment is used to drive the drive wheel 3 of the aperture opening and closing mechanism to rotate. Specifically, the drive mechanism includes a gear 6, a driver, and a gear rotation monitoring mechanism.

[0035] Among them, gear 6 is meshed with drive wheel 3, the output end of driver is connected to gear 6 to drive gear 6 to rotate, gear rotation monitoring mechanism is electrically connected to driver, gear rotation monitoring mechanism is used to monitor whether gear 6 rotates to a predetermined angle. During the transmission of gear 6, multiple movable blades 2 complete the action of moving inward or separating outward. When the action is completed, it means that the gear has rotated to the predetermined angle. After the action is completed, gear rotation monitoring mechanism sends a signal to driver, driver stops working.

[0036] Because a gear rotation monitoring mechanism is used, the driver in this embodiment is a motor, specifically a DC geared motor, which is less expensive than the existing method of using a servo motor.

[0037] Specifically, gear 6 has a connecting part that connects to the driver, and the connecting part has a protrusion 7, on which the gear rotation monitoring mechanism is located during the rotational stroke of the protrusion 7;

[0038] The gear rotation monitoring mechanism of this embodiment includes two sensors 5. The sensors 5 in this embodiment are contact sensors 5. The protrusion 7 is located between the two sensors 5. The two sensors 5 are fixedly installed on the fixed bracket 8 of the driver or the light bracket 1. When the movable blade 2 completes the inward or outward movement, the protrusion 7 just contacts one of the sensors 5, thereby triggering the signal and controlling the motor to stop working.

[0039] Example 2

[0040] like Figures 1-7 As shown, the embodiment proposes a control circuit applied to the automotive headlight adjustment structure of Embodiment 1. The control circuit includes at least an MCU and an LED driver circuit, a motor driver module, and a sensor signal input circuit connected to the MCU.

[0041] The circuit diagram of the MCU is as follows: Figure 7 As shown, the circuit diagram of the LED driver circuit is as follows: Figure 4 As shown, the circuit diagram of the motor drive module is as follows: Figure 5 As shown, the circuit diagram for the sensor signal and constant power input circuit is as follows: Figure 6 As shown;

[0042] The output of the sensor signal input circuit is connected to the MCU, the input of the LED driver circuit and the motor driver module is connected to the MCU, and the output of the motor driver module is connected to the motor.

[0043] The LED driving circuit includes multiple LED driving sub-circuits that correspond one-to-one with the LED light groups 4 on the multiple movable blades 2. The LED driving circuit can drive the LED light groups 4 on different movable blades 2 respectively to achieve different lighting effects. The input terminal of the motor current detection circuit is connected to the output terminal of the motor driving module, and the output terminal of the motor current detection circuit is connected to the MCU.

[0044] When the convex part 7 of the gear comes into contact with any of the sensors 5, the sensor 5 sends a signal to the MCU, and the MCU outputs the signal to the motor drive module to control the motor to stop working;

[0045] The MCU is connected to an ISP programming interface, which makes it easy to write program files that meet customer requirements into it;

[0046] The LED control circuit is responsible for converting the control commands output by the MCU into actual current or voltage signals to drive the LED group 3 to emit light. The lighting control program can be written into the MCU through the ISP programming interface to realize customized requirements.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit and essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A car headlight adjustment structure, comprising a headlight bracket (1), an aperture opening and closing mechanism, and a drive mechanism, wherein the aperture opening and closing mechanism comprises multiple movable blades (2) and a drive wheel (3), wherein when the drive wheel (3) rotates, the multiple movable blades (2) move inward or separate outward, and the drive mechanism is used to drive the drive wheel (3) of the aperture opening and closing mechanism to rotate, characterized in that, At least one LED light group (4) is installed on at least one of the movable blades (2).

2. The automotive headlight adjustment structure as described in claim 1, characterized in that, The drive mechanism includes: Gear (6) meshes with drive wheel (3); The driver, the output of which is connected to the gear (6), is used to drive the gear (6) to rotate; and The gear (6) rotation monitoring mechanism is electrically connected to the driver. The gear (6) rotation monitoring mechanism is used to monitor whether the gear (6) has rotated to a predetermined angle.

3. The automotive headlight adjustment structure as described in claim 2, characterized in that, The driver is a motor.

4. The automotive headlight adjustment structure as described in claim 2, characterized in that, The gear (6) has a connecting part that is connected to the driver, and a protrusion (7) is provided on the connecting part. The gear (6) rotation monitoring mechanism is located on the rotation stroke of the protrusion (7).

5. The automotive headlight adjustment structure as described in claim 4, characterized in that, The gear (6) rotation monitoring mechanism includes two sensors (5), with a protrusion (7) located between the two sensors (5). The two sensors (5) are fixedly mounted on the driver's fixed bracket (8) or the light bracket (1).

6. The automotive headlight adjustment structure as described in claim 5, characterized in that, The sensor (5) is a contact sensor (5).

7. A control circuit, applied to the automotive headlight adjustment structure as described in any one of claims 1-6, characterized in that, It includes at least an MCU and an LED driver circuit, a motor driver module and a sensor (5) signal input circuit connected to the MCU.

8. The control circuit as described in claim 7, characterized in that, The output of the sensor (5) signal input circuit is connected to the MCU, the input of the LED driving circuit and the motor driving module is connected to the MCU, and the output of the motor driving module is connected to the motor.

9. The control circuit as described in claim 7, characterized in that, The LED driving circuit includes multiple LED driving sub-circuits that correspond one-to-one with the LED light groups (4) on the multiple movable blades (2).

10. The control circuit as described in claim 7, characterized in that, It also includes a motor current detection circuit, the input of which is connected to the output of the motor drive module, and the output of which is connected to the MCU.

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