ELECTROMAGNET STRUCTURE ADOPTED IN VEHICLE LAMP

An electromagnet structure adopted in a vehicle lamp is provided. The electromagnet structure can be disposed on a heat dissipating device of the vehicle lamp, and includes a housing, a coil seat, a coil, a movable iron core, and a push-pull rod. The coil seat is disposed in the housing, the coil is disposed on the coil seat, and the movable iron core is disposed in the coil seat. The push-pull rod is connected to the movable iron core, one end of the push-pull rod has a holding portion formed thereon that can hold one end of the driving rod. The electromagnet structure further includes a Zener diode that can provide a stable voltage and a connector that can transmit electrical power to the coil to drive movement of the movable iron core such that the push-pull rod synchronously drives the driving rod.

FIELD OF THE DISCLOSURE

The present disclosure relates to an electromagnet structure, and more particularly to an electromagnet structure adopted in a vehicle lamp.

BACKGROUND OF THE DISCLOSURE

Vehicles such as automobiles or motorcycles generally have low-beam and high-beam headlights disposed thereon. The headlight can switch between low-beam and high-beam modes by using a switching structure. The switching structure includes a light-shaping plate that is disposed in front of a light source, and the light-shaping plate can be driven by an electromagnet to change a reflected light of the light source to achieve switching between the low-beam and high-beam modes. However, the electromagnet adopted in the vehicle lamp requires a connecting mechanism for being connected to the light-shaping plate, thus causing an inconvenience in assembly. Conventionally, most vehicles lamps have issues relating to unstable voltage, such as to negatively affect the use safety of the vehicle lamps.

SUMMARY OF THE DISCLOSURE

In response to the above-referenced technical inadequacies, the present disclosure provides an electromagnet structure adopted in a vehicle lamp. The electromagnet structure can provide a stable voltage to improve the safety in using the vehicle, and enable an assembly process to be simpler and easier.

In one aspect, the present disclosure provides an electromagnet structure adopted in a vehicle lamp. The vehicle lamp includes a driving rod.

The electromagnet structure includes a housing, a coil seat, a coil, a movable iron core, a push-pull rod, a connector, and a Zener diode. The coil seat is disposed in the housing. The coil is disposed on the coil seat. The movable iron core is disposed in the coil seat, and the movable iron core is located in the coil. The push-pull rod is connected to the movable iron core, and one end of the push-pull rod has a holding portion formed thereon that can hold one end of the driving rod. The connector is disposed on one side of the housing. The Zener diode is electrically connected between the coil and the connector and capable of providing a stable voltage. The connector is able to transmit electrical power to the coil through the Zener diode to drive the movable iron core to move and promote the push-pull rod to synchronously drive the driving rod, so that the vehicle lamp is switched between a high-beam mode and a low-beam mode.

Therefore, in the electromagnet structure adopted in the vehicle lamp provided in the present disclosure, the electromagnet structure includes a housing, a coil seat, a coil, a movable iron core, a push-pull rod, a connector, and a Zener diode. The coil seat is disposed in the housing. The coil is disposed on the coil seat. The movable iron core is disposed in the coil seat, and the movable iron core is located in the coil. The push-pull rod is connected to the movable iron core, and one end of the push-pull rod has a holding portion formed thereon that can hold one end of the driving rod. The connector is disposed on one side of the housing. The Zener diode is electrically connected between the coil and the connector. The connector is able to transmit electrical power to the coil through the Zener diode to drive the movable iron core to move and promote the push-pull rod to synchronously drive the driving rod, so that the vehicle lamp is switched between a high-beam mode and a low-beam mode. The Zener diode can provide a stable voltage to prevent damage from being inflicted to the vehicle lamp, so as to improve a safety when using the vehicle lamp. Moreover, the push-pull rod uses the holding portion to hold the one end of the driving rod, so that the assembly process becomes simpler and easier.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

Referring toFIG.1toFIG.4, the present disclosure provides an electromagnet structure adopted in a vehicle lamp. The electromagnet structure can be disposed on a heat dissipating device100(as shown inFIG.7) of the vehicle lamp, and includes a housing1, a coil seat2, a coil3, a movable iron core4, and a push-pull rod5.

The housing1is a hollow housing, and the housing1can have a first end plate11, a second end plate12, and a connection plate13, the first end plate11and the second end plate12are connected to two ends of the connection plate13that are opposite to each other. The first end plate11and the second end plate12can be parallel to each other. The coil seat2is disposed in the housing1, and the coil seat2can be disposed between the first end plate11and the second end plate12, so that the coil seat2can be stably disposed between the first end plate11and the second end plate12. The coil3is disposed on the coil seat2, and the movable iron core4is disposed in the coil seat2, in which the movable iron core4is located in the coil3.

The push-pull rod5is connected to the movable iron core4, one end of the push-pull rod5has a holding portion51formed thereon, and the holding portion51is able to hold one end of the driving rod101. Preferably, the holding portion51is circular, an annular slot511is formed in the holding portion51and is annularly formed on the holding portion51, so that one end of the driving rod101(as shown inFIG.7) can be easily and correspondingly arranged in the annular slot511, so as to achieve rapid assembly. When the coil3is powered on and generates magnetic force via excitation, movement of the movable iron core4is affected by a magnetic loop such that the push-pull rod5synchronously drives the driving rod101, so that the vehicle lamp is switched between a high-beam mode and a low-beam mode.

When the electromagnet structure is activated, the push-pull rod5can drive a light-shaping plate (omitted in the figures) through the driving rod101to operate and switch between the high-beam mode and the low-beam mode. The driving rod101is pivotally connected to the vehicle lamp, and the driving rod can have an active end102and a slave end103. The holding portion51of the push-pull rod5holds the active end102of the driving rod101, so that the active end102is provided in the annular slot511. The active end102can move along a left-right direction A (as shown inFIG.7), and the slave end103can move along a front-rear direction B; that is, the active end102can be pushed by the push-pull rod5of the electromagnet structure and move along the left-right direction A, and the slave end103can move along the front-rear direction B to push the light-shaping plate (omitted in the figures), so that the push-pull rod5of the electromagnet structure drives the light-shaping plate through the driving rod101and the vehicle lamp is switched between the high-beam mode and the low-beam mode. In addition, a power transmission direction of the electromagnet and the light-shaping plate can be changed, so that the arrangement of the electromagnet and the light-shaping plate can be more flexible. Furthermore, the electromagnet structure can be horizontally arranged in front of the heat dissipating device100to save an occupied space and lower an overall height of the electromagnet structure.

In this embodiment, a guiding seat6is disposed in the coil seat2, the guiding seat6is arranged at a positon on the coil seat2that is adjacent to the holding portion51of the push-pull rod5, and a through hole61and a conical hole62are formed in the guiding seat6(as shown inFIG.3). One end of the through hole61is connected with one end of the conical hole62, another end of the through hole61penetrates to one end of the guiding seat6, and another end of the conical hole62penetrates to another end of the guiding seat6. The push-pull rod5penetrates through the guiding seat6, and the push-pull rod5penetrates through the through hole61and conical hole62of the guiding seat6. The conical hole62is arranged at a position on the guiding seat6that is adjacent to the movable iron core4, and a diameter of the conical hole62is increased along a direction toward the movable iron core4. One end of the movable iron core4has a conical portion41formed thereon, the conical portion41is adjacent to the guiding seat6, and a diameter of the conical portion41is decreased along a direction toward the guiding seat6, so that the conical portion41has a taper that matches with a taper of the conical hole62. When the movable iron core4is moved by the effect of the magnetic loop, the conical portion41can cooperate with the conical hole62to guide the movable iron core4and the push-pull rod5to stably perform linear movement. Furthermore, a recovery spring9can be disposed between the movable iron core4and the guiding seat6, and the recovery spring9can push the movable iron core4and the push-pull rod5to move and return to their original positions.

In this embodiment, a rear bearing14is disposed between the movable iron core4and the first end plate11of the housing1, so that the movable iron core4is supported and guided to move more stably and smoothly. Furthermore, a front bearing63is disposed between the push-pull rod5and the guiding seat6, so that the push-pull rod5is supported and guided to move more stably and smoothly.

The electromagnet structure further includes a connector7and a Zener diode8, and the connector7and the Zener diode8are disposed on one side (a bottom side) of the housing1. The Zener diode is electrically connected between the coil3and the connector7, and the connector7can transmit electrical power to the coil3and the Zener diode8can provide a stable voltage. The connector7transmits electrical power to the coil3to drive movement of the movable iron core4such that the push-pull rod5synchronously drives the driving rod101, so that the vehicle lamp is switched between the high-beam mode and the low-beam mode.

Reference is made toFIG.4toFIG.6, in which the connector7includes an insulation body71and at least two terminals72. The insulation body71is made of an insulation material such as plastics, and the terminals72are made of metal materials having good electrical conductivity, such as copper. The insulation body71has a slot711, and the terminals72are disposed on the insulation body71. Each of the terminals72has a first end721and a second end722, the first end721and the second end722are located at two opposite ends of the terminal72, and a receiving portion723is disposed between the first end721and the second end722. The first ends721of the terminals72extend into the slot711of the insulation body71to be in contact with terminals of a corresponding connector (omitted in the figures) and receive the electrical power that is required. The second ends722and the receiving portions723of the terminals72extend out of the insulation body71, that is, the second ends722and the receiving portions723of the terminals72can extend out from one side (a bottom side) of the insulation body71. The receiving portions723of the terminals72allow the Zener diode8to be plugged therein, and the second ends722of the terminals72can be electrically connected to the coil3, so that the Zener diode8is electrically connected between the connector7and the coil3to provide a stable voltage. The connector7can be used to input electrical power, and can allow the Zener diode8to be plugged therein.

An external side of the insulation body71is engaged to a cover73that is covered outside the Zener diode8, and the second ends722and the receiving portions723of the terminals72, so as to protect the Zener diode8. Preferably, one end of the insulation body71is extended to have a fixing plate74formed thereon, and the fixing plate74can be sandwiched between the housing1and the coil seat2. That is, the fixing plate74can be held between the first end plate11of the housing1and the coil seat2, so that the Zener diode8and the connector7can be stably disposed on one side of the housing1, and an assembly process thereof is simple and easy. Preferably, a length L1(as shown inFIG.3) of the insulation body71and the cover73is not greater than a length L2of the housing1; that is, the length L1of the insulation body71and the cover73is equal to or less than the length L2of the housing1, so as to not occupy excessive space.

[Beneficial Effects of the Embodiment]

In conclusion, in the electromagnet structure adopted in the vehicle lamp provided in the present disclosure, the electromagnet structure includes a housing, a coil seat, a coil, a movable iron core, a push-pull rod, a connector, and a Zener diode. The coil seat is disposed in the housing. The coil is disposed on the coil seat. The movable iron core is disposed in the coil seat, and the movable iron core is located in the coil. The push-pull rod is connected to the movable iron core, and one end of the push-pull rod has a holding portion formed thereon that can hold one end of the driving rod. The connector is disposed on one side of the housing. The Zener diode is electrically connected between the coil and the connector. The connector is able to transmit electrical power to the coil through the Zener diode to drive movement of the movable iron core such that the push-pull rod synchronously drives the driving rod, so that the vehicle lamp is switched between a high-beam mode and a low-beam mode. The Zener diode can provide a stable voltage to prevent damage from being inflicted to the vehicle lamp, so as to improve a safety when using the vehicle lamp. Moreover, the push-pull rod uses the holding portion to hold the one end of the driving rod, so that the assembly process becomes simpler and easier.