JPH10147176A - Vehicle lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute a spring seat in a lamp unit with a projecting piece projected from a housing of the lamp unit, and to form the same nearer to the front face of the lamp unit than a position where the lamp unit is supported to a mount ring so as to obtain a long distance between the spring seat and the mount ring and a freedom for the length of an extension spring. SOLUTION: A vehicle lamp is composed of a lamp unit 2, a mount ring 1 supporting the lamp unit 2 and attached to the vehicle body, an extension spring 57 interposed between the lamp unit 2 and the mount ring 1, for urging the lamp unit toward the mount ring 1, a spring seat 56 in the lamp unit 2 for receiving the extension spring 57, formed of a projecting piece 5 projected from a housing 21 of the lamp unit 2, and formed at a position nearer to the front face of the lamp unit that a position 5a where the lamp unit 2 is supported to the mount ring 1, thereby it is possible to increase the length of the extension spring 57 in order to obtain a sufficient urging force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp having a mounting member for mounting to a vehicle body panel, and more particularly to a vehicular lamp having a structure in which a lamp unit is supported on a mount ring by using a spring force. The present invention relates to a vehicle lamp.

[0002]

2. Description of the Related Art In vehicle lamps such as headlights of automobiles,
An aiming mechanism for adjusting the optical axis of the irradiation light is provided. The aiming mechanism is configured to adjust the angle of the reflector provided in the lamp housing up and down, left and right to adjust the aiming, and the lamp unit formed in the lamp housing is attached to the body of a vehicle such as an automobile. There has been proposed an apparatus which performs an aiming adjustment by tilting the mount ring vertically and horizontally. The vehicle lighting device having the latter aiming mechanism,
As shown in FIG. 6, the conceptual configuration thereof includes a mount ring 101 having a rectangular frame shape and a lamp unit 102 supported by the mount ring 101. The lamp unit 102 includes a bulb and the like (not shown) inside a lamp housing 121, and the front surface of the lamp housing 121 is sealed by a lens 122.

The lamp unit 102 has a projecting piece 103 provided on a part of the rear surface thereof as a fulcrum S, which is vertically
The mount ring 101 is supported so as to be able to tilt left and right.
A projecting piece 105 is formed immediately below the fulcrum, and a vertical aiming part UD of a screw structure for tilting the lamp unit 102 up and down, and a horizontal part of the fulcrum S, although not shown, are shown. Right and left aiming portions of a screw structure for tilting the lamp unit right and left are provided at adjacent positions. Therefore, by adjusting the upper and lower aiming portions UD and the left and right aiming portions (not shown), the optical axis of the lamp unit 102 can be adjusted vertically and horizontally. In this case, in order to stabilize the tilt position of the lamp unit with respect to the mount ring 101, the lamp unit 102 and the mount ring 1 are fixed.
01, an extension spring (tensile coil spring) 157 is mounted.
By biasing the 02 toward the mount ring 101, rattling of the lamp unit due to play in the screw structure constituting each of the aiming mechanisms is prevented.

[0004]

In such a vehicular lamp, a spring seat 156 for locking one end of the extension spring 157 to the lamp unit 102 is formed by a protruding piece 105 integrated with the lamp housing 121. Although formed, the protruding piece 105 is provided at substantially the same position in the optical axis direction as the protruding piece 103 provided for forming the fulcrum portion and the aiming portion. For this reason, when the length of the screw rod 132 of the fulcrum portion S and the length of the aiming screw 152 of the upper and lower aiming portions UD are shortened in order to reduce the size of the aiming mechanism, the projecting pieces 103 and 105 of the respective portions are inevitably formed. The lamp spring 121 is provided at a position close to the rear surface of the lamp housing 121, and accordingly, the extension spring 1
The 57 spring seat 156 is also used for the lamp housing 12.
1 is provided at a position in the back direction. Accordingly, the distance between the spring seat 156 and the mount ring 101 is shortened, whereby the length of the extension spring 157 is shortened and a sufficient amount of bending cannot be obtained.
Therefore, it is difficult to stably support the actuator 01.

Further, in order to absorb backlash in the left and right aiming portions and the upper and lower aiming portions, extension springs for urging in respective aiming directions are required. At least two extension springs are provided for one lamp. It is an obstacle to downsizing the lamp. Further, in the conventional lamp units of different types, the distance between the mount ring 101 and the spring seat 156 is also different due to the difference in the distance between the mount ring and the fulcrum or aiming part. It is necessary to prepare the extension springs individually, which causes an increase in the number of parts.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle in which a lamp unit can be stably supported by an extension spring, and a single extension spring can cope with upper, lower, left and right aiming, and can support different lamp units. Lighting equipment.

[0007]

According to the present invention, there is provided a vehicular lamp having an extension spring for urging the lamp unit toward a mount ring, wherein a spring seat of the lamp unit, on which the extension spring is latched, is provided. The lamp unit is formed of a projecting piece protruding from the housing, and is formed at a location on the front side of the lamp unit with respect to a location where the lamp unit is supported by the mount ring. In particular, the lamp unit is supported on a mount ring by an aiming mechanism, and in order to constitute the aiming mechanism, it is preferable that the spring seat is formed by a projecting piece that is integral with a projecting piece that projects from the housing. in this case,
The protruding piece has a stepped shape in the front-rear direction of the lamp unit, a sprink sheet is formed at a front portion thereof, and an aiming mechanism is formed at a rear portion thereof.
Further, the lamp unit includes a fulcrum portion of the aiming mechanism, left and right aiming portions disposed at positions horizontally opposed to the fulcrum portion, and upper and lower portions disposed at positions vertically opposed to the fulcrum portion. It is preferable that an aiming portion is provided, and the spring seat is disposed at a diagonal position with respect to the fulcrum portion.

[0008]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partially exploded perspective view of an embodiment in which the present invention is applied to a headlamp (headlight) of an automobile, as viewed from the front, and FIG. 2 is a perspective view of an assembled state as viewed from the rear. 3 (a) and 3 (b) are front and bottom views thereof, and FIGS. 4 and 5 are AA line and B
It is a vertical sectional view which follows the B line. In these figures,
The headlight includes a mount ring 1 formed in a substantially rectangular frame shape, and a lamp unit 2 supported by the mount ring 1 in the frame. The lamp unit 2 has a container-like lamp housing 21 having a substantially rectangular front opening, and a lens 2 attached to the front opening of the lamp housing 21 and sealed at the peripheral edge thereof.
2, a bulb socket 23 detachably attached to a rear opening of the lamp housing 21, and a bulb (light bulb) supported by the bulb socket 23 in a lamp chamber defined by the lamp housing 21 and the lens 22. ) 2
And 4. It goes without saying that the inner surface of the lamp housing 21 is formed as a reflector surface 25 by evaporating aluminum, and reflects the light emitted by the bulb 24 toward the lens. Further, the bulb 24 is provided with a shade 26 for regulating the emission direction of the emitted light. Further, the valve socket 23 is covered with a seal cap 27 to achieve a seal between the valve socket 23 and the rear opening.

On the other hand, first and second projecting pieces 3 and 4 projecting obliquely upward on the rear side are integrally formed at two positions on the left and right of the upper surface of the lamp housing 21. In addition, a third section having an L-shaped vertical cross section, which protrudes rearward from the lower edge of the opening and protrudes downward from the lower edge of the opening, is formed in a region extending between the left and right substantially middle portions of the lower surface of the lamp housing 21.
Projecting pieces 5 are integrally formed. These protruding pieces 3,
Reference numerals 4 and 5 are used to support the lamp unit 2 on the mount ring 1, and these projections 3 and
A support mechanism constructed between 4, 5 and the mount ring 1 moves the lamp unit 2 up and down with respect to the mount ring 1,
It is an aiming mechanism that tilts left and right respectively. The mount ring 1 is fixed to a vehicle body (not shown) by using openings 11 provided at a plurality of locations.

Ball bearings 31, 41 are fixedly supported on the first and second projecting pieces 3, 4, respectively. The screw rod 3 is provided on the ball bearing 31 of the first projecting piece 3.
A ball 33 provided at the end of the screw rod 32 is fitted therein, and the screw rod 32 is fastened and supported to the mount ring 1 by a pair of fixed nuts 34. Thereby, the first
The ball bearing 31 of the projecting piece 3 is formed as a fulcrum S of the aiming mechanism, and the lamp unit 2 can be tilted up and down, left and right with the fulcrum S as a fulcrum.
A ball 43 provided at the tip of a left and right aiming screw 42 is fitted into the ball bearing 41 of the second projecting piece 4, and the left and right aiming screw 42 is attached to the mount ring 1 by a nut body 44. On the other hand, the screw shaft position is supported so as to be adjustable. Therefore, by changing the position of the screw shaft with respect to the mount ring 1 by rotating the left and right aiming screws 42 at the distal ends, the distance between the second projecting piece 4 and the mount ring 1 is changed, and A left / right aiming portion RL is formed that can tilt the lamp unit 2 in the left / right direction with the portion S as a fulcrum.

On the other hand, the third protruding piece 5 provided on the lower surface of the lamp housing 21 has one side 5a extending directly below the first protruding piece 3, and this one side 5a
A ball bearing 51 is fixedly supported. The ball bearing 51 has a vertical aiming screw 52
The ball 53 provided at the tip of is fitted.
The upper and lower aiming screws 52 are supported by a nut body 54 with respect to the mount ring 1 so that the screw shaft position thereof can be adjusted. Therefore, by changing and adjusting the position of the screw shaft of the upper and lower aiming screws 52 in the same manner as in the case of the left and right aiming screws, the distance between the third projecting piece 5 and the mount ring 1 is changed, and the fulcrum S An up / down aiming unit UD capable of tilting the lamp unit 2 in the up / down direction with respect to the fulcrum is formed.

Here, the third protruding piece 5 is shown in FIG.
As shown in (b), the bottom surface is formed such that the rear end is bent stepwise, and the other side 5b is located closer to the front side of the lamp housing 21 than the one side 5a and is opened. A spring seat 56 is formed by the opening 55. Each end of an extension spring 57 composed of a tension coil spring is hooked between the spring seat 56 and the notch 12 provided in the mount ring 1 and the opening 13, and the spring seat 56 is interposed therebetween. Thus, an urging force for urging the lamp unit 2 toward the mount ring 1 is applied.
The other end 5b of the third protruding piece 5 is preferably located directly below the second protruding piece 4 when the lamp unit 2 is viewed from the front. It is preferable that the size of the unit is set as close as possible to the position directly below the second protruding piece 4 within the allowable range.

In the headlamp of this configuration, the lamp unit is supported on the mount ring 1 by the screws 32, 42, and 52 provided on the first to third projecting pieces 3 to 5, respectively. Is fixed to a vehicle body (not shown), so that the lamp unit 2 is supported by the vehicle body via the mount ring 1. And
In this supporting state, the screw rod connecting the first projecting piece 3 and the mount ring 1 is adjusted by adjusting the screw shaft position of the left and right aiming screws 42 connecting the second projecting piece 4 and the mount ring 1. Since the lamp unit 2 is tilted left and right with the fulcrum portion 32 as the fulcrum portion S, the left and right optical axes of the headlamp can be adjusted. The lamp unit 2 is tilted up and down with the first projecting piece 3 as a fulcrum S by adjusting the screw shaft position of the vertical aiming screw 52 connecting the third projecting piece 5 and the mount ring 1. Therefore, the vertical optical axis of the headlamp can be adjusted.

The lamp unit 2 is connected to the other end 5b by an extension spring 57 mounted between the spring seat 56 provided on the other end 5b of the third projecting piece 5 and the mount ring 1. Is biased toward the mount ring 1 side. Moreover, since the other end 5b of the third protruding piece 5 is disposed at a diagonal position with respect to the first protruding piece 3 as the fulcrum S when the lamp unit 2 is viewed from the front, the extension spring is provided. 5
The urging force 7 urges the fulcrum S in one direction in each of the up-down direction and the left-right direction. For this reason, even if play occurs in the screwing structure between the screws 42 and 52 of the left and right aiming portions RL and the upper and lower aiming portions UD and the nut bodies 44 and 54 fixed to the mount ring 1, this one is used. The urging force of the extension spring 57 absorbs the play caused by the play of each screw, and the lamp unit 2 is mounted on the mounting ring 1.
It becomes possible to support stably.

Further, the extension spring 57
Since the spring seat 56 formed on the third protruding piece 5 on which the upper and lower aiming portions UD are formed is located closer to the front side of the lamp unit 2 than the one end portion 5a where the upper and lower aiming portions UD are formed, the upper and lower aiming screws 52 are formed. Even if the shaft length is designed to be short, the mount ring 1 and the spring seat 5
6 can be designed to have a relatively long dimension. For this reason, the extension spring 57 having a long shaft length can be used, whereby a sufficient amount of bending can be obtained, and the lamp unit 2 can be used.
Can be stably urged and supported with respect to the mount ring 1. Further, when different types of lamp units are provided, even if the distance between the mount ring 1 and the fulcrum S or the respective aiming portions RL and UD is different, the stepped bottom surface of the third protruding piece 5 is used. By arbitrarily changing the shape, the distance between the mount ring 1 and the spring seat 56 can be designed to have a certain dimension, and an extension spring of one length can be applied to each type of lamp unit, and the number of parts can be reduced. It becomes possible.

Here, the above embodiment is an example in which the present invention is applied to a headlamp, but the present invention is similarly applicable to a headlamp with an integrated clearance lamp and a lamp other than the headlamp. It is possible.
Further, the extension spring can be disposed on the upper surface side of the lamp unit.

[0017]

As described above, according to the present invention, the spring seat of the lamp unit, on which the extension spring for urging the lamp unit toward the mount ring is hooked, has a projecting piece projecting from the housing of the lamp unit. And the lamp unit is formed at a position on the front side of the lamp unit rather than at a position where the lamp unit is supported by the mount ring, so that the dimension between the spring seat and the mount ring can be increased. A degree of freedom can be obtained, and a sufficient amount of deflection can be obtained, so that the effect of stable support by urging of the lamp unit can be enhanced. This also makes it possible to use the same extension spring for different types of lamps, thereby reducing the number of components. Furthermore, by setting the spring seats of the extension springs at diagonal positions with respect to the fulcrum that is the fulcrum of each of the left and right and up-and-down aiming mechanisms, one play of the left and right aiming section and the up-and-down aiming section by one extension spring. The absorbed stable support can be achieved, and the structure can be simplified.

[Brief description of the drawings]

FIG. 1 is a partially exploded perspective view of an embodiment of the present invention as viewed from the front.

FIG. 2 is a perspective view as viewed from the back.

FIG. 3 is a front view and a bottom view of FIG.

FIG. 4 is a sectional view taken along line AA of FIG.

FIG. 5 is a sectional view taken along line BB of FIG. 3;

FIG. 6 is a schematic sectional view showing a conceptual configuration of a conventional lamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mount ring 2 Lamp unit 3 1st projecting piece 4 2nd projecting piece 5 3rd projecting piece 21 Lamp housing 22 Lens 24 Valve 32 Screw rod 34 Nut pair 42 Left and right aiming screw 44 Nut body 52 Vertical aiming screw 54 Nut Body 56 Spring seat 57 Extension spring

Claims (4)

[Claims] 1. A lamp unit, a mount ring supporting the lamp unit and attached to a vehicle body, and mounted between the lamp unit and the mount ring to urge the lamp unit toward the mount ring. And a spring seat of the lamp unit, on which the extension spring is hooked, is formed of a projecting piece protruding from a housing of the lamp unit, and the lamp unit is mounted on a mount ring. A vehicular lamp formed at a location on the front side of the lamp unit with respect to a supported location. 2. A lamp unit is supported by a mount ring by an aiming mechanism, and the spring seat is formed by a projecting piece integral with a projecting piece projecting from the housing to constitute the aiming mechanism. 1. Vehicle lighting device. 3. The projecting piece according to claim 2, wherein the projecting piece has a stepped shape in the front-rear direction of the lamp unit, a sprink sheet is formed at a front portion thereof, and an aiming mechanism is formed at a rear portion thereof. Vehicle lighting fixtures. 4. The lamp unit has a fulcrum portion of the aiming mechanism, a left and right aiming portion disposed at a position horizontally opposed to the fulcrum portion, and a position opposed to the fulcrum portion in a vertical direction. The vehicular lamp according to claim 2 or 3, wherein a vertical aiming portion is provided, and the spring seat is disposed at a diagonal position with respect to the fulcrum portion.