JPH02270649A - Actuation mechanism of head lamp cover - Google Patents

Abstract

PURPOSE: To smooth the operation by providing an actuating mechanism of a headlamp cover for partially opening and closing a headlamp opening which is rectangular in a front view and formed in the front end of an automobile, which is adapted to open and close the cover through a crank and a link mechanism of a specified structure according to the rotation of the motor output shaft. CONSTITUTION: A headlamp assembly 10 is arranged in an opening 12 which is rectangular in a front view and formed on the front end of an automobile, and the opening 12 is partially closed by a headlamp cover 26. In this arrangement, an actuator mechanism 30 for opening and closing the cover 26 is formed by a motor 32, a crank 38 fixed to an output shaft 36 of the motor and a link mechanism for opening and closing the cover 26 interlocking with the rotation of the crank 38. The link mechanism comprises a crankshaft 38, a driving link 42, both ends of which are pivoted on the cover 26, a first guide link 46, both ends of which are pivoted on a fixed portion 52 of the vehicle and the cover 26, and a second guide link 48, both ends of which are pivoted on the fixed portion 52 of the vehicle and the intermediate part of the driving link 42.

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION The present invention relates to an actuation mechanism, and more particularly to an actuation mechanism for moving a vehicle headlamp into an at least partially lowered position and projecting a light beam forward of the vehicle. The invention relates to an operating mechanism for moving a vehicle's headlamp cover between a raised position and a raised position that exposes the headlamp cover.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a novel actuation mechanism for moving a headlamp cover between a lowered position that hides the headlamp and a raised position that exposes the headlamp. More specifically, the headlamp cover is configured such that during the opening movement of the headlamp cover, the bottom of the headlamp cover is first rotated inwardly toward the headlamp and then finally rotated upwardly to expose the headlamp. An object of the present invention is to provide an actuation mechanism having a linkage connected to a cover.

:Structure and operation of the invention] The operating mechanism according to the invention is provided at the front end of an automobile, and is set in an opening where a headlamp is attached. The actuation mechanism has an electric motor connected to an output shaft with a fixed crank. A linkage mechanism connecting the crank to the headlamp cover acts to move the headlamp cover between a lowered position and a 1-, nailed position. The link mechanism has a drive link and a pair of guide links. one end of the drive link is connected to the crank by a first pivot connection;
The other end is connected to the lower portion of the headlamp cover by a second pivot connection. One end of one guide link is connected to a fixed part of the vehicle by a third pivot connection, and the other end is connected to a rear part of the headlamp cover by a fourth pivot connection. Similarly, one end of the capacity guide link is connected to a fixed part of the vehicle by a fifth pivot connection at a point rearwardly distant from the third pivot connection, and the other end is connected to a fixed part of the vehicle by a fifth pivot connection.
It is connected to the middle part of the crank by a pivot connection. The crank, drive link, guide link and pivot connection are designed to move the lower edge of the headlamp cover downwardly towards the headlamp when the headlamp cover is in the lowered position and the crank is initially rotated by the electric motor. The headlamp cover is pivoted and arranged to translate the headlamp cover upwardly and rearwardly toward the headlamp upon subsequent rotation of the crank. If the crank continues to rotate,
The headlamp cover rotates about the fourth pivot joint in a direction opposite to the initial direction of rotation of its lower edge;1. L
Reach the position.

EXAMPLE 1 Referring to the accompanying drawings, particularly FIG. 1, a headlamp assembly IO is located within an opening 12 formed in the front end of a motor vehicle. The opening I2 has a rectangular shape when viewed from the front of the vehicle, and is connected to the substantially horizontal leading edge 14 of the vehicle hood 16, the body side panels (not shown) on either side of the headlamp assembly IO, and the horizontal Body bottom panel 1 with leading edge 20
8. Headlamp assembly 10 includes a headlamp 22 mounted within a support housing 24 rigidly mounted on an automobile.

The support housing 24 carries the headlamp 22 in a conventional manner to permit adjustable and convenient movement of the headlamp 22 about a horizontal aiming axis and a vertical compression axis. In this case, as shown in FIG.
It is partially closed off by a headlamp cover 26 having a contour corresponding to the dotted line 28). Further, the headlamp cover 26 is designed to close only the upper half of the opening 12 when it is in the lowered position, and although not shown, it has a substantially rectangular shape when viewed from the front of the vehicle. are doing. At the rear of the opening 12 there is provided an actuating mechanism 30 according to the invention, which comprises a reversible electric motor 32 which is indirectly supported in the fixed position shown by the seametal of the motor vehicle. An electric motor 32 is connected to the headlamp cover 26 via a linkage for moving the headlamp cover 26 between the lowered position of FIG. 1 and the nailed position of FIG. 4, as will be described in detail below. It acts on When the headlamp cover 26 is in the lowered position as shown in FIG.
The headlamp cover 26 closes the upper half of the opening 12 and hides the upper half of the headlamp assembly IO when viewed from the front of the vehicle. On the other hand, when the headlamp cover 26 is in the -'2-up position of FIG. 4, the opening 12 is completely exposed and the headlamp 22 can project light toward the front of the vehicle.

Although not shown, the electric motor 32 drives a worm,
The worm drives a worm gear located within the housing 34. The gear is connected to an output shaft 36 which rigidly supports one end of a crank 38 for rotation between the position of FIG. 1 and the position of FIG. As is common in power equipment of this type, electronic limit switch means (not shown) energizes the motor 32 when the crank 38 reaches each of the positions shown in FIG. 1.4. Further rotation is automatically blocked.

The free end of the crank 38 is connected by a pivot connection 40 to the rear end of a drive link 42, the front end of which is connected by a pivot connection 44 to the lower part of the headlamp cover 26. The drive link 42 is a pair of guide links 46
．． 48 and j% CG and move the headlamp cover 26 between the position shown in FIG. 1 and the position shown in FIG. For this reason,
The lower end of the guide link 46 is connected to a bracket 52 fixed to the vehicle by a pivot joint 50, and the upper end of the guide link 46 is connected to a tongue piece 56 fixed to the back surface of the headlamp cover 26 by a pivot joint 54. has been done. Similarly, the lower end of the guide link 48 is connected to the bracket 52 by a pivot connection 58, and the upper end is connected to the bracket 52 by a pivot connection 60 at a point on one side of the line connecting the centers of the pivot connections 40.44. It is connected to the middle portion of the drive link 42.

The drive link 42, the guide link 46, 48 and the crank 38 are connected to the crank 38 when the headlamp cover 26 is in the lowered position of figure m1 and the electric motor 32 is energized.
is arranged to pivot the lower edge 61 of the headlamp cover 26 counterclockwise rearward about the pivot connection 54, as shown in FIG.

This initial movement of the lower edge 61 of the headlamp cover 26 causes the headlamp cover 26 to move toward the headlamp assembly l.
It separates from the aforementioned body side panel on both sides of the O. Continued clockwise rotation of the crank 38 causes the guide link 4 to
6.48 causes the headlamp cover 26 to be translated as a whole rearward to the position shown in FIG. 3. As the crank 38 continues to rotate clockwise, the lower edge 61 of the headlamp cover 26 pivots in the clockwise direction about the pivot connection 5-s and moves to the fully extended position of FIG.

At this point, electric motor 32 is automatically deenergized. When rotated from the fully lowered position of FIG. 1 to the fully raised position of FIG.
It's rotating. Also, the counterclockwise (FIG. 2) pivoting of the lower edge 61 from the FIG. 1 position to the FIG. 2 position occurs during the first 20 degrees of rotation of the crank 38. The translational movement of the headlamp cover 26 from the position of FIG. 2 to the position of FIG. 3 occurs during the period of rotation of the crank 38 from 20° to 90°, and from the position of FIG. The final rotational movement of the headlamp cover 26 occurs while the crank 38 moves from the 90° position to the final position of FIG. Furthermore, during the opening movement of the headlamp cover 26 from the position shown in FIG. 1 to the position shown in FIG. 4, the center of the pivot joint 44 moves along the figure 5-shaped path shown in FIG.

As is clear from the above explanation, the headlamp cover 26
When the electric motor 38 reaches the fully raised position of FIG. 4, the electric motor 38 is energized, as previously described. Additionally, disabling of electric motor 38 typically occurs when a headlamp switch is actuated to turn on headlamp 22. When the headlamp switch is moved to turn off the headlamp 22, the electric motor 32 is energized again and rotates the crank 38 counterclockwise to close the headlamp cover 26.
Move it from the raised position shown in Figure 4 to the lowered position shown in Figure 1.

[Brief explanation of drawings]

FIG. 1 is an inverted view of the actuation mechanism of the present invention, shown with the headlamp cover in the lowered position; FIG. 2 is the headlamp cover and linkage during initial movement of the linkage of the actuation mechanism; Figure 3 shows the position of the headlamp cover and linkage when the crank connected to the electric motor of the actuation mechanism has been rotated approximately 90° from its initial position. FIG. 4 is an inverted view similar to FIG. 1, with the headlamp cover in the lowered position. Explanation of symbols 12: Opening 16: Automobile hood 18: Body bottom panel 22: Headlamp 26: Headlamp cover 30: Operating mechanism 32/electric motor 36: Output shaft 38: Crank 40.44.50.54.58.60: Pivot connection 42 2WD Vt link 46. 48 ・Pf link 52 2 bracket 61: Lower edge

Claims (1)

[Claims] 1. Headlamps (
22) An opening (12) provided at the front end of the vehicle that stores the
and is movable between a lowered position in which the headlamp (22) is hidden and an upper position in which the headlamp (22) is exposed to project a light beam forward of the vehicle. an actuating mechanism for a headlamp cover mounted on the vehicle for moving the headlamp cover (26) between the lowered position and the raised position; a motor (32); a crank (38) fixed to the output shaft (36) to rotate together with the output shaft; and a crank (36);
In the initial rotation of step 8), the lower edge (61) of the headlamp cover (26) in the lowered position is pivoted rearward towards the headlamp (22) and the crank (36)
During the subsequent rotation of the headlamp cover (2
6) translation upwards and backwards towards the headlamp (22) and then rotating the headlamp cover (26) to position the headlamp cover (26) above the headlamp (22); and a link mechanism connecting between the headlamp cover (26) and the crank (38). 2. The actuation mechanism according to claim 1, wherein the linkage comprises a drive link (42), a first guide link (46) and a second guide link (48);
2) is connected to the crank (
said first guide link (46) has one end connected to said headlamp cover (26) by a second pivot connection (44); one end connected to a fixed part (52) of the vehicle by a pivot connection (50) and the other end connected to the headlamp cover (26) by a fourth pivot connection (54);
At a point where the second guide link (48) is rearwardly distant from the third pivot connection part (50), the second guide link (48) connects to the fifth pivot connection part (5
8) to the fixed part (52) of the vehicle, and a sixth pivot at a point intermediate between the first pivot connection (40) and the second pivot connection (44). Connection part (6
0) and the other end connected to the drive link (42) by the crank (38) and the drive link (42).
) and the first and second guide links (46, 48),
When the headlamp cover (26) is in the lowered position and the crank (38) is first rotated by the electric motor (32), the lower edge (61) of the headlamp cover (26) Said fourth pivot connection part (5
4) towards said headlamp (22) and upon continued rotation of said crank (38);
The headlamp cover (26) is attached to the headlamp (22).
), and then when the headlamp cover (26) reaches the raised position, the lower edge (61) of the headlamp cover is moved into the fourth pivot connection (54). an actuating mechanism, characterized in that it is arranged to rotate the lower edge (61) upwardly about it in a direction opposite to said pivoting direction. 3. The actuation mechanism according to claim 1, wherein the opening (1
2) is of rectangular shape and defined by upper and lower body panels (16, 18) and a pair of laterally spaced body side panels; said linkage mechanism being located on a side of said headlamp; the link mechanism has a drive link (42), a first guide link (46) and a second guide link (48); the drive link (42)
one end connected to the crank (38) by a first pivot connection (40) and the other end connected to the headlamp cover (26) by a second pivot connection (44); The first guide link (46) is connected to a third pivot joint (
one end connected to the fixed part (52) of the vehicle by a fourth pivot connection (50) and the other end connected to the headlamp cover (26) by a fourth pivot connection (54);
The guide link (48) is connected to the third pivot joint (50).
one end connected to said fixed part (52) of said vehicle by a fifth pivot connection (58) at a point rearwardly distant from said first pivot connection (40) and said second pivot connection. Connecting part (
44) and the other end connected to said drive link (42) by a sixth pivot connection (60);
The crank (38), the drive link (42), and the first and second guide links (46, 48) are arranged so that the headlamp cover (26) is in the lowered position and the crank (38) is connected to the electric motor. (32) when the headlamp cover (26) is rotated for the first time.
pivoting said lower edge (61) of said rearwardly towards said headlamp (22) about said fourth pivot joint (54) so that upon continued rotation of said crank (38) said headlamp Translating the cover (26) upwards and backwards towards the headlamp (22) and then moving the lower edge (61) of the headlamp cover as the headlamp cover (26) reaches the raised position. Said fourth pivot connection part (5
4) An actuation mechanism, characterized in that it is arranged to rotate the lower edge (61) unilaterally in a direction opposite to said pivoting direction about the lower edge (61).