JP2513516Y2 - Vehicle headlights - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a vehicle headlamp that can easily and accurately adjust an optical axis without using an aiming adapter, and is particularly movable. A vehicle in which a position for reading a rotation angle (hereinafter, referred to as a vertical angle) about a vertical adjustment axis of a reflector and a rotation angle (hereinafter, referred to as a left / right angle) about a horizontal adjustment axis is not limited. It relates to a headlight.

[Prior Art] A vehicle headlamp gives a dazzling light to an oncoming vehicle if the optical axis of the vehicle is too upward, and does not illuminate a distant object if the optical axis of the vehicle is too downward. Since it is dangerous if the optical axis is not correct, such as improper illumination,
It is necessary to properly adjust the above-mentioned optical axis.

In conventional vehicle headlamps, an optical axis is used to adjust the optical axis. However, when the optical axis is adjusted using an aimer, it is necessary to project a projection (aiming boss) for pressing and aiming the aimer on the lens, which reduces the design value of the lens, and The manufacturing cost of the lens was increased. Moreover, there is a problem that the optical axis adjustment is not performed unless the above-mentioned expensive aimer is installed.

Therefore, a vehicle headlamp that can easily and accurately adjust the optical axis without using an aimer (Actual exploitation 57-70602)
No.) was filed first.

In this vehicular headlamp, a movable reflector is rotatably disposed in a lamp chamber defined by a housing and a lens, and a light source bulb is disposed on the front side of the reflector, and the housing and the reflector are provided. An optical axis adjusting mechanism for up and down and an optical axis adjusting mechanism for left and right are provided. The up-down optical axis adjusting mechanism and the left-right optical axis adjusting mechanism are configured by screwing an adjusting screw mounted on the housing into an adjusting nut (screw mounting) mounted on the movable reflector. The up and down and left and right adjusting nuts are provided with up and down and left and right pointer parts, respectively, and the up and down and left and right see-through parts are respectively provided on a part of the housing facing the up and down and left and right adjusting nuts. The vertical and horizontal scales are provided on the vertical and horizontal see-through portions (the vertical and horizontal angles of the movable reflector are shown respectively).
Are provided respectively.

In such a vehicle headlamp, the upper and lower adjusting screws and the left and right adjusting screws are rotated to move the upper and lower adjusting nuts and the left and right adjusting nuts back and forth to move the movable reflector to the vertical adjusting shaft,
The optical axis is adjusted by rotating the left and right adjustment axes. At this time, the optical axis can be adjusted while reading the vertical and horizontal angles of the movable reflector by looking at the scales of the vertical and horizontal see-through parts indicated by the pointers of the vertical and horizontal adjust nuts, respectively. it can.
Therefore, the optical axis can be adjusted easily and accurately without using an aimer.

[Problems to be Solved by the Invention] However, the above-mentioned vehicle headlamp is for the upper and lower parts of the housing indicated by the pointer parts of the adjust nuts for the upper and lower parts,
Since the vertical and horizontal angles of the movable reflector are read by looking at the scales of the left and right see-through parts, the vertical and horizontal angles of the movable reflector are read at the above-mentioned vertical and horizontal angles. There are problems such as being limited to the positions where the left and right adjust nuts are arranged.

An object of the present invention is to provide a vehicle headlamp in which the optical axis can be adjusted easily and accurately without using an aimer, and the vertical and horizontal angles of the movable reflector are not limited to be read. Especially.

[Means for Solving the Problems] According to the present invention, a pointer member is attached to one of a housing and a movable reflector, and a pointer portion is attached to the pointer member by at least one of a vertical adjustment shaft and a horizontal adjustment shaft. A scale is provided on the scale plate that indicates the rotation angle of the movable reflector about the other axis that forms a pair with the axis where the pointer is located.The scale plate is provided on the other side of the housing and the movable reflector. The shaft is fixed so that it is located on the surface on which the scale is provided, the indicator and the scale are opposed and close to each other, and the housing is provided with a see-through part for visually recognizing the indicator and the scale. And

[Operation] According to the present invention, the pointer portion has the vertical adjustment shaft,
Since it is always positioned on at least one of the left and right adjustment shafts, the relative positional relationship between the pointer and the scale is always constant even if the movable reflector is rotated around the axis on which the pointer is positioned. Therefore, there is no deviation between the pointer and the scale. As a result, even when the movable reflector is rotated about the axis on which the pointer is located and then is rotated about another axis that is paired with the axis on which the pointer is located, the movable reflector The rotation angle about the other axis can be accurately read.

Moreover, the optical axis can be adjusted while looking at the pointer portion and the scale from the see-through portion of the housing and reading the vertical and horizontal angles of the movable reflector. Therefore, the optical axis can be adjusted easily and accurately without using an aimer.

In addition, the pointer can be set at any position on the vertical adjustment axis and the horizontal adjustment axis, so the vertical and horizontal angles of the movable reflector can be read by looking at the pointer and scale. It can be set at any position on the vertical and horizontal adjustment axes.

[Embodiment] An embodiment of a vehicle headlamp according to the present invention will be described below with reference to the accompanying drawings.

In the figure, reference numeral 1 designates a housing, which opens a front surface 10 and a rear portion 11.

Reference numeral 2 denotes a lens, which is attached to the front opening 10 of the housing 1. As a result, the lamp chamber 20 defined by the housing 1 and the lens 2 is formed.

Reference numeral 3 denotes a movable reflector. The movable reflector 3 has, for example, a reflecting surface 30 of a paraboloid of revolution on the front surface side (inner surface side), the front portion is opened, and the through hole 31 is provided in the rear portion. A light source bulb attachment 32 is provided on the periphery of the. The movable reflector 3 is rotatably attached to the housing 1 by a pivot bearing mechanism 33. As a result, the movable reflector 3 is rotatably housed in the lamp chamber 20.

4 is a light source bulb, and this light source bulb 4 is a glass tube 40
And a filament (not shown) arranged in the glass tube 40 and a cap integrally provided from the rear portion of the glass tube 40.
41, a collar portion 42 integrally provided at an intermediate portion of the base 41, and a terminal 43 protruding from the rear portion of the base 41.
The light source bulb 4 is provided with a rear through hole 31 of the movable reflector 3.
From the front to the front reflection surface 30 side of the movable reflector 3, the collar portion 42 of the light source bulb 4 is brought into contact with the peripheral edge of the through hole 31 of the movable reflector 3, and the light source bulb 4 is moved by the attachment 32 of the movable reflector 3. By being detachably attached to the movable reflector 3, the light source bulb 4 is disposed on the front side of the movable reflector 3, and the filament of the light source bulb 4 is located in the vicinity of the focal point F of the reflecting surface 30 of the movable reflector 3. Reference numeral 44 denotes a rubber cap that is in close contact with the base 41 of the light source bulb 4, and 45 denotes a peripheral opening of the rubber cap 44, which is a rear opening portion of the housing 1.
It is a mounting cap that is closely attached to 11.

Reference numerals 5A and 5B denote vertical optical axis adjusting mechanisms and horizontal optical axis adjusting mechanisms provided on the housing 1 and the movable reflector 3, and these optical axis adjusting mechanisms 5A and 5B are rotatably mounted on the housing 1. Adjusting screws 50A and 50B mounted so as not to be movable in the axial direction and an adjusting nut 51B mounted so as not to be rotatable in the movable reflector 3 and not movable in the axial direction of the screw hole (upper and lower ones are not shown) And the adjusting screws 50A and 5
Screw 0B into the adjustment nut 51B.

As a result, when the adjusting screw 50A of the vertical optical axis adjusting mechanism 5A is rotated, the center of the pivot bearing mechanism 33 and the center of the left and right optical axis adjusting mechanism 5B (the adjusting screw 50B and the adjusting nut 51B are almost screwed together). The turning reflector 3 is turned up and down about a turning shaft for up and down connecting to the center, that is, an up-down adjusting shaft L-L. On the other hand, when the adjusting screw 50B of the left and right optical axis adjusting mechanism 5B is rotated, the center of the pivot bearing mechanism 33 and the center of the vertical optical axis adjusting mechanism 5A (almost the screwing center of the adjusting screw 50A and the adjusting nut). The turning reflector 3 turns to the left and right around a turning shaft for left and right, which connects to and, that is, a left and right adjustment shaft H-H.

 6 is a vehicle body equipped with the vehicle headlamp of the present invention.

Reference numeral 7 is a pointer member for adjusting the left and right optical axes, which is a screw, and the pointer member 7 is a lock nut on the housing 1.
Wear by 70. The lock nut 70 is used for adjusting the origin of the pointer member 7 and then for setting the pointer member 7 as described above.
Is locked to the housing 1. An arrow-shaped flat plate portion 71 is attached to the tip of the above-mentioned pointer member 7, and the vertical adjustment shaft L
-L is provided so as to be located on the upper surface of the flat plate portion 71. A linear pointer mark 72 as a pointer is provided on the upper surface of the flat plate portion 71.
Is provided on the vertical adjustment axis L-L from the tip of the arrow.

Reference numeral 8 is a scale plate, and the scale plate 8 is composed of a fixed portion 80 and a scale portion 81 integrally provided on the fixed portion 80.
A scale indicating the left-right angle of the movable reflector 3 is attached to the upper surface of the. The fixed portion 80 of the scale plate 8 is fixed to the movable reflector 3 so that the vertical adjustment axis L-L is located on the upper surface of the scale portion 81, and the scale portion 81 of the scale plate 8 is fixed to the pointer member 7. The pointer mark 72 of is opposed to and close to.

Reference numeral 9 is a bubble-type level for adjusting the upper and lower optical axes. The level 9 has a level frame main body 91 attached to a fixed frame 90 by an adjusting screw 92 and a spring 93 for adjusting the origin. The fixed frame 90 of the level 9 is attached to the scale portion 81 of the scale plate 8.
Then, the vertical adjustment axis L-L is fixed so as to be located on the upper surface of the spirit level 9.

When the optical axis of the movable reflector 3 is initially set, the pointer member 7, the scale plate 8 and the level 9 have the pointer mark 72 of the pointer member 7 at the position where the optical axis of the movable reflector 3 is located at the left and right reference positions. The origin is adjusted so that the air bubble of the level bubble 9 is located at the central reference position when the optical axis of the movable reflector 3 is located at the upper and lower reference positions, indicating the "0" scale of the scale plate 8. . As a result, when the above-mentioned origin alignment is completed, the pointer mark 72 of the pointer member 7, the "0" scale of the scale plate 8 and the bubble located at the central reference position of the level 9 are adjusted by the vertical adjustment axis L. -Align on L.

Reference numeral 12 is a see-through portion for visually recognizing the pointer member 7, the scale plate 8 and the spirit level 9. The see-through portion 12 is a transparent case or the like in this example, and is provided on the left side of the upper portion of the housing 1.

Since the vehicular headlamp of the present invention in this embodiment has the above-described structure, when the adjusting screw 50A of the vertical optical axis adjusting mechanism 5A is appropriately rotated, the movable reflector 3 is moved vertically to the vertical adjusting axis L-. It rotates up and down about L. At this time, as shown in FIG. 6, the movable reflector 3
The scale plate 8 and the spirit level 9 fixed to the axis of rotation rotate about the vertical adjustment axis L-L as the movable reflector 3 rotates, while the pointer mark 72 of the pointer member 7 moves the vertical adjustment axis L-L.
-Always on L. For this reason, even if the movable reflector 3 is vertically rotated about the vertical adjustment axis L-L as described above, the relative positional relationship between the pointer mark 72 and the scale plate 8 is always constant, and the pointer thereof is always constant. A deviation d, which will be described later, does not occur between the mark 72 and the scale of the scale plate 8 (for example, a standard scale such as a "0" scale). As a result, the movable reflector 3 is rotated about the vertical adjustment shaft L-L on which the pointer mark 72 is located, and then is rotated about the horizontal adjustment shaft H-H that is paired with the vertical adjustment shaft L-L. Even when the movable reflector 3 is moved, the right and left angles of the movable reflector 3 can be accurately read.

Here, the pointer mark 72 'of the pointer member is positioned at a position displaced from the vertical adjustment axis L-L by D, and the pointer mark 72' is positioned.
The optical axis adjustment when the scale plate 8'is opposed to 72 'will be described with reference to FIG.

In this case, when the movable reflector 3 is rotated up and down about the vertical adjustment axis L-L, the scale plate 8'is rotated with respect to the pointer mark 72 ', and the vertical adjustment axis L is adjusted along with the rotation of the movable reflector 3. -Rotate up and down around L as an axis. As a result, a deviation of d occurs in the relative positional relationship between the pointer mark 72 'and the scale plate 8', and the movable reflector 3 to be described later is rotated about the left and right adjustment shafts H-H by that amount. It becomes difficult to read the right and left angles of 3 accurately.

Next, when the adjusting screw 50B of the optical axis adjusting mechanism 5B for the left and right is rotated, the movable reflector 3 rotates left and right around the left and right adjusting axis H-H. With the rotation of the movable reflector 3, the scale plate 8 rotates left and right about the left-right adjustment shaft H-H, and the scale of the scale plate 8 pointed by the pointer mark 72 facing the scale plate 8 is checked, The optical axis is adjusted while reading the right and left angles of the movable reflector 3.

At this time, since the pointer mark 72 is always positioned on the vertical adjustment axis LL as described above, the movable reflector 3 is
Even if the vertical adjustment shaft L-L is rotated up and down before it is rotated left and right around the left and right adjustment shaft H-H, the relative positional relationship between the pointer mark 72 and the scale plate 8 is obtained. Is always constant, the right and left angle of the movable reflector 3 can be accurately read.

In this way, as shown in FIG. 1, the level 9 and the pointer mark 72, from the EP through the see-through portion 12 of the housing 1,
The optical axis can be adjusted while looking at the scale plate 8 and reading the vertical and horizontal angles of the movable reflector 3. Therefore, the optical axis can be adjusted accurately and easily without using an aimer.

In addition, the scale plate 8 on the movable reflector 3 side and the pointer mark 72 on the pointer member 7 on the housing 1 side are the vertical adjustment axis L-
Since the position can be set to any position on L, the position for reading the vertical angle and the horizontal angle of the movable reflector 3 by looking at the pointer mark 72 and the scale of the scale plate 8 is the vertical adjustment axis L.
It can be set to any position on -L.

In particular, in this embodiment, the pointer member 7 and the scale plate 8 for reading the right and left angles of the movable reflector 3 and the level 9 for reading the vertical angle of the movable reflector 3 are provided at one transparent portion 12 of the housing 1. Further, the optical axis can be easily adjusted because it can be visually recognized from.

It should be noted that, in the above-described embodiment, the example in which the pointer mark 72 is positioned on the vertical adjustment axis L-L and provided on the housing 1 side has been described, but an installation example of the pointer mark 72 is as follows.
Excluding the above example, there are the following seven types.

1. An example in which the pointer mark 72 is located on the vertical adjustment axis LL and is provided on the movable reflector 3 side.

2. An example in which the pointer mark 72 is located on the left-right adjustment shaft H-H and is provided on the housing 1 side.

3. An example in which the pointer mark 72 is located on the left-right adjustment shaft H-H and is provided on the movable reflector 3 side.

4. An example in which one pointer mark 72 is located on the vertical adjustment shaft L-L and is provided on the housing 1 side, and another pointer mark 72 is located on the horizontal adjustment shaft H-H and is provided on the housing 1 side.

5. Example in which one pointer mark 72 is located on the vertical adjustment shaft L-L and is provided on the housing 1 side, and another pointer mark 72 is located on the horizontal adjustment shaft H-H and is provided on the movable reflector 3 side .

6. Example in which one pointer mark 72 is located on the vertical adjustment shaft LL and is provided on the movable reflector 3 side, and another pointer mark 72 is located on the horizontal adjustment shaft H-H and is provided on the housing 1 side .

7. One pointer mark 72 is located on the vertical adjustment shaft L-L and is provided on the movable reflector 3 side, and another pointer mark 72 is located on the left and right adjustment shaft H-H and is provided on the movable reflector 3 side. Example.

Further, in the above-described embodiment, the scale plate 8 is fixed to the movable reflector 3 and the scale plate 8 is provided with the scale, but the scale may be directly provided to the movable reflector 3.

[Effect of the Invention] As is clear from the above, the vehicle headlamp of the present invention is
A pointer member is attached to either the housing or the movable reflector, and a pointer portion is provided on this pointer member on at least one of the vertical adjustment shaft and the left and right adjustment shafts, and the pair of the pointer portion and the shaft is located. A scale is provided on the scale plate that indicates the rotation angle of the movable reflector about another axis, and this scale plate is placed on the other side of the housing and the movable reflector so that the other shaft is located on the surface provided with the scale. Since the pointer portion and the scale are opposed to and close to each other and the housing is provided with the see-through portion for visually recognizing the pointer portion and the scale, the following effects can be achieved.

That is, since the pointer portion is always positioned on at least one of the vertical adjustment axis and the horizontal adjustment axis, even if the movable reflector is rotated about the axis on which the pointer portion is positioned, The relative positional relationship with the scale is always constant, and there is no deviation between the pointer and the scale. As a result, even when the movable reflector is rotated about the axis on which the pointer is located and then is rotated about another axis that is paired with the axis on which the pointer is located, the movable reflector The rotation angle about the other axis can be accurately read.

Moreover, the optical axis can be adjusted while looking at the pointer portion and the scale from the transparent portion of the housing, that is, while reading the vertical and horizontal angles of the movable reflector. Therefore, the optical axis can be adjusted easily and accurately without using an aimer.

Also, the pointer can be set at any position on the vertical adjustment axis and the horizontal adjustment axis, so the vertical and horizontal angles of the movable reflector can be read vertically by looking at the pointer and scale. It can be set at any position on the adjustment axis and the left and right adjustment axes.

[Brief description of drawings]

The attached drawings show an embodiment of a vehicle headlamp according to the present invention. FIG. 1 is a longitudinal sectional view showing a state of optical axis adjustment, and FIG. FIG. 3 is a schematic diagram showing the relative positional relationship between the pointer mark and the scale plate on the vertical adjustment axis, FIG. 4 is an explanatory view showing the relationship between the vertical adjustment axis and the horizontal adjustment axis, and FIG. 5 is the pointer. FIG. 6 is a perspective view of a member, a scale plate, and a level, and FIG. 6 is an explanatory view showing a relative positional relationship between the pointer mark and the scale plate when the movable reflector is rotated up and down. 1 ... Housing, 12 ... Transparent part, 2 ... Lens, 20 ... Lamp room,
3 ... Movable reflector, 33 ... Pivot bearing mechanism, 4 ... Light source valve, 5A ... Vertical optical axis adjusting mechanism, 5B ... Left and right optical axis adjusting mechanism, 6 ... Body, 7 ... Pointer member, 72 ... Pointer mark ( Pointer), 8 ... Scale plate, LL ... Vertical adjustment axis, H-H
… Left and right adjustment axis.

Claims (1)

(57) [Scope of utility model registration request] 1. A movable reflector is rotatably disposed in a lamp chamber defined by a housing and a lens, a light source bulb is disposed on the movable reflector, and light for vertical movement is provided on the housing and the movable reflector. An axis adjustment mechanism and an optical axis adjustment mechanism for the left and right are provided, and by operating the optical axis adjustment mechanism for the up and down and the optical axis adjustment mechanism for the left and right, a pair of the vertical adjustment axis and the left and right adjustment axes are used as axes. In a vehicular headlamp for adjusting the optical axis by rotating the movable reflector vertically and horizontally, a pointer member is attached to either one of the housing and the movable reflector, and the pointer portion is vertically adjusted to the pointer member. A scale is provided on at least one of the shaft and the left-right adjustment shaft, and a scale is provided on the scale plate that indicates the rotation angle of the movable reflector about another shaft that is paired with the shaft where the pointer is positioned. , This The scale plate is fixed to the other of the housing and the movable reflector so that the other shaft is located on the surface on which the scale is provided, and the pointer portion and the scale are opposed to each other and close to each other, and the housing A vehicle headlamp, further comprising a see-through portion for visually recognizing the pointer portion and the scale.