Motor transmission system and automobile lamp

Abstract

The utility model discloses a motor transmission system and an automobile lamp. The motor transmission system comprises a motor; the input end of the transmission part is in transmission connection with the output end of the motor, and the output end of the transmission part is used for driving a driven part to act; one of the magnet and the magnetic sensor is arranged at the output end of the transmission part so as to synchronously rotate along with the output end of the transmission part, the other one of the magnet and the magnetic sensor is relatively static, and the magnetic sensor is used for detecting the magnetic change of the magnet so as to obtain the rotation angle of the transmission part. According to the utility model, the magnet and the magnetic sensor are added, one of the magnet and the magnetic sensor is fixed at the output end of the transmission part to rotate along with the transmission part, and the other of the magnet and the magnetic sensor is relatively static, so that when the transmission part outputs power, the magnet and the magnetic sensor can generate a relative rotation trend; therefore, the magnetic field generated by the magnet and detected by the magnetic sensor is changed, the rotation angle of the transmission part can be obtained, and then the angle and the position of the driven part can be speculated.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lamps, in particular to a motor transmission system and an automobile lamp. Background Art

[0002] With the continuous development of intelligent car lighting technology, the lighting functions are enriched, and the requirements for lighting effects are also emerging. More and more car lights are exploring the combination of mechanical movement and car lighting modes to achieve the cool effect of mechanical dynamic lighting.

[0003] like Figure 1 As shown, an automobile lamp in the prior art includes a motor transmission system, a motion mechanism and a reflective bowl 01. There are multiple reflective bowls 01, and each reflective bowl 01 can move between opening and closing. The motor transmission system is used to provide power to drive the reflective bowl 01 to move, and the motion mechanism is used to convert the power output by the motor transmission system into power for opening and closing (opening and closing) the reflective bowl 01.

[0004] In the prior art, it is impossible to monitor the rotation angle output by the motor transmission system, and thus it is impossible to accurately control the opening angle of the reflective bowl 01 .

[0005] Therefore, how to monitor the rotation angle output by the motor transmission system has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of the present utility model is to provide a motor transmission system to monitor the rotation angle output by the motor transmission system;

[0007] Another object of the present invention is to provide an automobile lamp having the above motor transmission system.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A motor transmission system for automobile lamps, comprising:

[0010] Motor;

[0011] A transmission member, wherein the input end of the transmission member is transmission-connected to the output end of the motor, and the output end of the transmission member is used to drive the driven member to move;

[0012] A magnet and a magnetic sensor, one of which is arranged at the output end of the transmission member to rotate synchronously with the output end of the transmission member, and the other is arranged relatively stationary, and the magnetic sensor is used to detect the magnetic change of the magnet to obtain the rotation angle of the transmission member.

[0013] Optionally, in the above motor transmission system, the magnet is arranged at the output end of the transmission member, and the magnetic sensor is arranged stationary compared to the magnet.

[0014] Optionally, in the above motor transmission system, the position detection component includes:

[0015] A magnet is disposed at the output end of the transmission member to rotate synchronously with the output end of the transmission member;

[0016] The magnetic sensor is arranged statically relative to the magnet and is used to detect the magnetic change of the magnet to obtain the position of the magnet and the output end of the transmission member.

[0017] Optionally, in the above-mentioned motor transmission system, the transmission member is a gear, and the magnet is arranged at the rotation center of the transmission member.

[0018] Optionally, the above motor transmission system further includes a sensor mounting bracket, and the magnetic sensor is mounted on the sensor mounting bracket.

[0019] Optionally, in the above motor transmission system, the magnet is bonded to the transmission member.

[0020] Optionally, in the above motor transmission system, a magnet embedding groove is provided on the end surface of the transmission member, and the magnet is bonded in the magnet embedding groove.

[0021] Optionally, in the above-mentioned motor transmission system, the output end of the motor has a mounting hole, and the gear shaft of the transmission member is inserted into the mounting hole and bonded to the mounting hole.

[0022] Optionally, in the above motor transmission system, a clamping claw is provided on the end surface of the transmission member, and the magnet is clamped on the clamping claw.

[0023] Optionally, in the above motor transmission system, the magnet is a permanent magnet or an electromagnet.

[0024] The motor transmission system provided by the utility model adds a magnet and a magnetic sensor on the basis of the traditional motor transmission system, one of which is fixed at the output end of the transmission part to rotate with the transmission part, and the other is relatively stationary, so that when the transmission part outputs power, the magnet and the magnetic sensor can produce a relative rotation trend, which will cause the magnetic field generated by the magnet detected by the magnetic sensor to change, and thereby the rotation angle of the transmission part can be obtained, and then the angle and position of the driven part can be inferred. When the utility model is applied to automotive lamps, the utility model can monitor the position of the transmission part and the reflective bowl in real time, and can control the lighting effect more accurately.

[0025] An automobile lamp comprises a motor transmission system and a reflective bowl, wherein the motor transmission system is the motor transmission system as described in any one of the above items, and the reflective bowl is the driven component.

[0026] The automobile lamp provided by the utility model has the above-mentioned motor transmission system, and thus has all the technical effects of the above-mentioned motor transmission system, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 It is a structural schematic diagram of an automobile lamp in the prior art;

[0029] Figure 2 A cross-sectional view of a motor transmission system provided by an embodiment of the utility model;

[0030] Figure 3 A side view of a motor transmission system provided by an embodiment of the utility model;

[0031] Figure 4 A schematic diagram of the structure of the motor transmission system provided by the embodiment of the utility model without the sensor mounting frame;

[0032] Figure 5 A schematic diagram of the structure of the motor transmission system provided by the embodiment of the utility model;

[0033] Figure 6 A control flow chart of a motor transmission system provided in an embodiment of the utility model.

[0034] The markings in the figure are:

[0035] 101 - magnetic sensor; 102 - magnet; 103 - transmission member; 104 - motor; 105 - sensor mounting bracket. DETAILED DESCRIPTION

[0036] The core of the utility model is to provide a motor transmission system to monitor the rotation angle output by the motor transmission system;

[0037] Another core of the utility model is to provide an automobile lamp having the above motor transmission system.

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] See also Figure 2 to Figure 5 The embodiment of the utility model discloses a motor transmission system for automobile lamps, including a motor 104, a transmission member 103, a magnet 102 and a magnetic sensor 101. The motor 104 is used to provide a power source and output torque.

[0040] The input end of the transmission member 103 is transmission-connected to the output end of the motor 104, and the output end of the transmission member 103 is used to drive the driven member to move. It should be noted that, usually, there is a motion mechanism between the motor transmission system and the driven member (such as the reflector bowl in the automobile lamp). Since the movement of the driven member is relatively complex, the movement requirements of the driven member cannot be met by relying solely on the motor transmission system. Therefore, it is generally necessary to configure a motion mechanism to convert the movement (usually a rotational movement) output by the motor transmission system into a movement that enables the driven member to complete the required movement. It can be understood by those skilled in the art that whether the motion mechanism needs to be configured is related to the movement of the driven member, and those skilled in the art can make a choice according to the needs. This scheme has nothing to do with the specific structure and action principle of the motion mechanism, and is mainly used to detect the movement output by the motor transmission system, so as to infer the position of the driven member.

[0041] In order to detect the position of the transmission member 103, the present embodiment adds a magnet 102 and a magnetic sensor 101, one of which is disposed at the output end of the transmission member 103 to rotate synchronously with the output end of the transmission member 103, and the other is relatively stationary. The magnetic sensor 101 is used to detect the magnetic change of the magnet 102 to obtain the rotation angle of the transmission member 103.

[0042] For example, the magnet 102 can be set at the output end of the transmission member 103, and the magnetic sensor 101 can be arranged stationary relative to the magnet 102, so that when the motor transmission system outputs power, the magnet 102 and the magnetic sensor 101 can produce relative movement, so that the position of the transmission member 103 can be obtained according to the measured magnetic field changes by the magnetic sensor 101, and then the position of the driven member can be obtained.

[0043] Those skilled in the art will appreciate that the magnet 102 may be a permanent magnet or an electromagnet, as long as it can generate a magnetic field, and the present invention does not limit the type of the magnet 102 .

[0044] In summary, the motor transmission system provided by the utility model adds a magnet 102 and a magnetic sensor 101 on the basis of the traditional motor transmission system, one of which is fixed at the output end of the transmission member 103 to rotate with the transmission member 103, and the other is relatively stationary, so that when the transmission member 103 outputs power, the magnet 102 and the magnetic sensor 101 can produce a relative rotation trend, which will cause the magnetic field generated by the magnet 102 detected by the magnetic sensor 101 to change, and thereby the rotation angle of the transmission member 103 can be obtained, and then the angle and position of the driven member can be inferred. When the utility model is applied to automotive lamps, the utility model can monitor the position of the transmission member 103 and the reflective bowl in real time, and can control the lighting effect more accurately.

[0045] like Figure 4 As shown, the transmission member 103 is a gear, and the magnet 102 is arranged at the rotation center of the transmission member 103. It should be noted that the magnet 102 can also be arranged away from the rotation center of the transmission member 103, but the eccentric arrangement of the magnet 102 will cause the magnet 102 to revolve around the center of the transmission member 103 when the transmission member 103 rotates, and the rotation range is large. The change of the magnetic field of the magnet 102 is large, and it is easy to deviate from the detection range of the magnetic sensor 101, affecting the accuracy of the detection. In this embodiment, the magnet 102 is arranged at the rotation center of the transmission member 103, which is equivalent to the magnet 102 rotating with the transmission member 103 when the transmission member 103 rotates, and the rotation range is small, deviating from the detection range of the magnetic sensor 101, and the detection accuracy is high.

[0046] The magnetic sensor 101 can also be arranged on the rotation center line of the transmission member 103, that is, arranged at a position directly opposite to the magnet 102, to avoid the magnetic field detected by the magnetic sensor 101 fluctuating when the transmission member 103 rotates, thereby affecting the detection accuracy.

[0047] In order to facilitate the fixation of the magnetic sensor 101, the present embodiment may further include a sensor mounting frame 105, and the magnetic sensor 101 is mounted on the sensor mounting frame 105. The sensor mounting frame 105 can be fixed to any fixable position of the automobile lamp, as long as it is a stationary component. It should be noted that the sensor mounting frame 105 should be arranged close to the transmission member 103 so that the magnetic sensor 101 and the magnet 102 are at a closer distance to improve the accuracy of detection.

[0048] Furthermore, the magnet 102 can be bonded to the transmission member 103. This embodiment does not limit the fixing method of the magnet 102, as long as it can rotate with the transmission member 103. For example, the magnet 102 can also be fixed by clamping and clamping. Specifically, a clamping claw or a claw can be provided on the end surface of the transmission member 103, and the magnet 102 is clamped on the clamping claw or the claw. Fixing the magnet by clamping or clamping can ensure that the magnet can be easily disassembled and replaced after it is damaged.

[0049] The magnet 102 is bonded to the transmission member 103, which can completely avoid the risk of the magnet 102 rotating relative to the transmission member 103 due to inertia, and the reliability of fixing by bonding is higher. Specifically, a magnet embedding groove can be provided on the end face of the transmission member 103, and the magnet 102 is bonded in the magnet embedding groove. In this embodiment, the magnet is fixed in the magnet embedding groove to avoid interference with other components, so that the magnet 102 does not protrude or protrudes less from the end face of the transmission member 103, and the risk of the magnet 102 falling off due to collision with other components during rotation is completely avoided.

[0050] In a specific embodiment of the present invention, the output end of the motor 104 has a mounting hole, and the gear shaft of the transmission member 103 is inserted into the mounting hole and bonded to the mounting hole to ensure that the motor 104 can reliably transmit the torque to the transmission member 103.

[0051] The transmission member 103 may include a gear part and a gear shaft part, wherein one end face of the gear shaft extends out, and the other end face of the gear is provided with the magnet 102. In order to prevent the transmission member 103 from affecting the magnetic field of the magnet 102, the transmission member 103 may be designed to be made of plastic.

[0052] The embodiment of the utility model further discloses an automobile lamp, which includes a motor transmission system and a reflective bowl, wherein the motor transmission system is the motor transmission system disclosed in the above embodiment, and the reflective bowl is the driven part. The automobile lamp provided by the utility model has all the technical effects of the above motor transmission system because it has the above motor transmission system, which will not be described in detail herein.

[0053] like Figure 2 and Figure 6 As shown, when the automobile lamp is in working state, the MCU (Microcontroller Unit) sends a rotation signal command to the motor 104, the motor 104 rotates to drive the transmission member 103, the transmission member 103 rotates to drive the reflective bowl to rotate, and at the same time the magnet 102 also rotates with the transmission member 103, the magnetic field will change, the magnetic sensor 101 reads the magnetic field change of the magnet 102, converts the magnetic signal into an electrical signal and then outputs it to the MCU.

[0054] The utility model determines the position of the transmission member 103 by reading the change of the magnetic field of the magnet 102, which is more accurate than the traditional transmission system. At the same time, the magnetic sensor 101 will output a feedback signal to the MCU to play a monitoring role. The MCU can monitor the state of the motor 104 in real time and make a better rotation strategy.

[0055] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0056] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A motor transmission system for automotive lighting, characterized in that: include: Motor (104); A transmission member (103), wherein an input end of the transmission member (103) is in transmission connection with an output end of the motor (104), and the output end of the transmission member (103) is used to drive a driven member to move; A magnet (102) and a magnetic sensor (101), wherein one of the magnet (102) and the magnetic sensor (101) is arranged at the output end of the transmission member (103) to rotate synchronously with the output end of the transmission member (103), and the other is arranged relatively stationary, and the magnetic sensor (101) is used to detect the magnetic change of the magnet (102) to obtain the rotation angle of the transmission member (103).

2. The motor transmission system according to claim 1, characterized in that: The magnet (102) is arranged at the output end of the transmission member (103), and the magnetic sensor (101) is arranged stationary relative to the magnet (102).

3. The motor transmission system according to claim 2, characterized in that: The transmission member (103) is a gear, and the magnet (102) is arranged at the rotation center of the transmission member (103).

4. The motor transmission system according to claim 3, characterized in that: It also comprises a sensor mounting frame (105), and the magnetic sensor (101) is mounted on the sensor mounting frame (105).

5. The motor transmission system according to claim 4, characterized in that: The magnet (102) is bonded to the transmission member (103).

6. The motor transmission system according to claim 5, characterized in that: A magnet embedding groove is provided on the end surface of the transmission member (103), and the magnet (102) is bonded into the magnet embedding groove.

7. The motor transmission system according to claim 3, characterized in that: The output end of the motor (104) has a mounting hole, and the gear shaft of the transmission member (103) is inserted into the mounting hole and bonded to the mounting hole.

8. The motor transmission system according to claim 3, characterized in that: A clamping claw is provided on the end surface of the transmission member (103), and the magnet (102) is clamped on the clamping claw.

9. The motor transmission system according to any one of claims 1 to 8, characterized in that: The magnet (102) is a permanent magnet or an electromagnet.

10. An automobile lamp, characterized in that: It comprises a motor transmission system and a reflective bowl, wherein the motor transmission system is the motor transmission system as claimed in any one of claims 1 to 9, and the reflective bowl is the driven component.

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