Patent Application
20090059612
The present invention relates to a head lamp assembly for vehicles and the electromagnetic valve for operating a barrier plate is located beside the reflection member.
A conventional head lamp assembly for vehicles known to applicant is shown in U.S. Pat. No. 5,899,559 which includes a reflection member, a lamp, a lens, a fixed board, a barrier plate and an adjusting device. The reflection member includes two focuses and the lamp is located at one of the focuses and the fixed board is located between the lens and the reflection member. The barrier plate is located at a top edge of the fixed board and connected with the adjusting device which includes an electromagnetic valve which is located to the fixed board. When operating the electromagnetic valve, the barrier plate is pivoted to change the high beam and low beam of the head lamp assembly. However, because the electromagnetic valve is directly connected to the fixed board which is made from metal material which absorbs heat from the light beam so that the electromagnetic valve is heated by the absorbed heat of the fixed board so that the magnetic force is reduced because of the high temperature. The weak magnetic force cannot operate the barrier plate successfully so that the current has to be increased and the current increases the temperature of the coil in the valve. A further heat dispensing device is needed to release the heat from the electromagnetic valve and increases the size of the electromagnetic valve.
The present invention intends to provide a head lamp assembly wherein the electromagnetic valve is located beside the fixed board and the reflection member so that the temperature of the electromagnetic valve is controlled within an acceptable range.
The present invention relates to a head lamp assembly which comprises a reflection member and a lamp is located at a focus of the reflection member. A fixed board is fixed to the reflection member and has a recess defined in a top edge thereof. An adjusting device includes an electromagnetic valve and a barrier plate which includes a connection arm extending perpendicularly therefrom. The electromagnetic valve is fixed to the fixed board and located beside the reflection member. The electromagnetic valve has a retractable shaft connected to the connection arm and the barrier plate is pivotably connected to the fixed board by a pivot. The barrier plate normally blocks the recess of the fixed board. The barrier plate is pivoted away from the recess when the electromagnetic valve is operated.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
Referring to
A fixed board 3 is fixed to the open end of the reflection member 1 and has a recess 31 defined in a top edge thereof. The light beam from the lamp 2 is reflected by the curved inner surface of the reflection member 1 and project straight ahead. The high beam is formed when the light beam passes through the recess 31 of the fixed board 3, and the low beam is formed when the recess 31 is blocked by the barrier plate 42 which is described later.
An adjusting device includes an electromagnetic valve 41 and the barrier plate 42, wherein the electromagnetic valve 41 is fixed to a connection portion 33 which extends perpendicularly from one side of the fixed board 3. The electromagnetic valve 41 is located beside the reflection member 1. The electromagnetic valve 41 includes a retractable shaft 411 which extends from an underside of the electromagnetic valve 41 and includes a flange 4111 and a spring 412 is mounted to the retractable shaft 411 and biased between a body of the electromagnetic valve 41 and the flange 4111. The retractable shaft 411 is connected to a connection arm 421 extending perpendicularly from the barrier plate 42. The retractable shaft 411 includes a through hole 4112 defined a side of a distal end thereof and a connection member 43 has a first end extending through the through hole 4112 and a second end of the connection member 43 extends through a third hole 4212 in the connection arm 421 of the barrier plate 42. The third hole 4212 is defined in a bent portion of the connection arm 421 and a recess 4211 is defined by the bent portion, so that the second end of the connection member 43 is located in the recess 4211.
The barrier plate 42 is pivotably connected to the fixed board 3 by a pivot 44 and normally blocking the recess 31 of the fixed board 3. The fixed board 3 includes a first hole 34 and the barrier plate 42 has a second hole 422 which is located in alignment with the first hole 34. The pivot 44 includes a bearing 441 and a pin 442, wherein the bearing 441 is securely engaged with the first hole 34 and the pin 442 extends through the second hole 422 in the barrier plate 42 and is securely engaged with a brace 4411 of the bearing 441. Accordingly, the barrier plate 42 can be smoothly pivoted about the pin 442 by the bearing 441.
Normally, the barrier plate 42 blocks the recess 31 as shown in
A protrusion 52 extends from an end of the fixed board 5 and a slot 521 is defined in the protrusion 52, the barrier plate 62 is received in the slot 521. The retractable shaft 611 of the electromagnetic valve 61 includes a longitudinal slit and the connection arm 621 of the barrier plate 62 includes a fork end 6211 which is inserted in the slit and a fixing pin 612 extends through holes 6111 in two parts separated by the longitudinal slit in the retractable shaft 611 and the fork end 6211.
The pivot 63 includes a first tube 631 securely engaged with a first hole 54 in the fixed board 5 and a second tube 632 extends through the first tube 631. Two flanges 6321, 6322 extend radially from two ends of the second tube 632 and are in contact with two ends of the first tube 631. A bolt 633 extends through a second hole 622 in the barrier plate 62 and the second tube 632 and a nut 634 is connected to the bolt 633. The second tube 632, the bolt and the barrier plate 62 are pivotable relative to the fixed board 5.
Normally, the barrier plate 62 blocks the recess 51 as shown in
While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
