JP3252619B2 - Vehicle lighting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp such as a fog lamp and a headlamp, and more particularly to a vehicular lamp capable of reducing the number of parts.

[0002]

2. Description of the Related Art A conventional vehicle lamp will be described below with reference to FIGS. In this example, a reflector movable vehicle lamp will be described. In the figure, reference numeral 1 denotes a housing made of, for example, a synthetic resin. Openings 10 and 11 are provided at the front and rear of the housing 1, respectively. A seal recess 12 is provided in the front opening 10.

In FIG. 1, reference numeral 2 denotes a lens. The lens 2 has a dish shape, and seal legs 20 are provided all around the opening.
Are provided integrally. The sealing leg 20 of the lens 2 is sealed in the sealing recess 12 of the housing 1 by hot melt 21 or the like, thereby defining a lamp chamber 14.

In FIG. 1, reference numeral 3 denotes a reflector. The reflector 3 is made of, for example, a thermosetting resin (BMC). The reflector 3 is disposed in the lamp chamber 14 so as to be rotatable and tiltable by a pivot bearing or the like (not shown). Openings 30 and 31 are provided on the front and rear of the reflector 3, respectively. In addition, a reflection surface 32 of, for example, a paraboloid of revolution is provided on the front side of the rear portion of the reflector 3. Further, a groove 33 for mounting the mounting spring 5 and a hole 35 for screwing the screw 34, which will be described later, are provided in the lower portion of the rear side peripheral edge of the rear opening 31 of the reflector 3, respectively. Three concave portions 36 and two engaging grooves 360 are provided in the rear peripheral edge of the rear opening 31 of the reflector 3, respectively.
Further, a boss 37 for mounting a shade 6 described later is provided on the front side of the reflector 3, and a hole 39 for screwing a screw 38 is provided in the boss 37.

In FIG. 1, reference numeral 4 denotes a light source bulb. The light source bulb 4 includes a glass tube 40 in which a filament (not shown) is sealed, a cylindrical base 41 provided integrally with a rear part of the glass tube 40, and a rear end projecting from the rear end of the base 41. It comprises a terminal 43 provided, a flange 42 provided at an intermediate portion of the base 41, and three engaging claws 44 provided on a peripheral edge of the flange 42. The glass bulb 40 of the light source bulb 4 thus formed is inserted from the rear opening 11 of the housing 1 and the rear opening 31 of the reflector 3 toward the front reflecting surface 32 of the reflector 3, and the three engaging claws of the light source bulb 4 4
4 are respectively engaged with the three concave portions 36 of the reflector 3, and two engaging portions 52 of the mounting spring 5, which will be described later, are respectively engaged with the two engaging grooves 360 of the reflector 3. The light source bulb 4 is detachably attached to the reflector 3.

In FIG. 1, reference numeral 5 denotes a mounting spring.
The mounting spring 5 has a U-shaped mounting portion 50 at an intermediate portion, and an elastic contact portion 51 having a V-shape as viewed from the back from both sides of the mounting portion 50 and an arcuate shape as viewed from the side. And an engagement portion 52 having a V-shape when viewed from the back of an intermediate portion of the elastic abutment portion 51, and a circular operation portion 53 when viewed from the side surface of the distal end of the elastic abutment portion 51. The mounting portion 50 of the mounting spring 5 is connected to the reflector 3
The mounting plate 54 is set on the mounting groove 33, and the screw 34 is screwed into the hole 35 of the reflector 3 via the mounting plate 54, so that the mounting spring 5
Is pivotally attached to the reflector. The elastic contact portion 51 of the mounting spring 5 is connected to the flange 42 of the light source bulb 4.
The light source bulb 4 can be removably attached to the reflector 3 by elastically contacting the back surface of the reflector 3 and engaging the engaging portion 52 of the mounting spring 5 with the engaging groove 360 of the reflector 3.

In FIG. 1, reference numeral 6 denotes a shade. The shade 6 includes a blocking part 60 for blocking light from the light source bulb 4 and incident on the ineffective reflection surface of the reflector 3, and a mounting part 61. The screw 3 is attached to the boss 37 of the reflector 3 by attaching the mounting portion 61 of the shade 6.
8, and the blocking part 60 of the shade 6 is disposed at a predetermined position.

In FIG. 1, reference numeral 7 denotes a so-called rubber cover waterproof cover. The waterproof cover 7 includes a boss portion 70 having annular irregularities on the inner peripheral surface thereof, a bellows-like elastic portion 71 integrally extending rearward and outward from the outer periphery of the boss portion 70, The contact portion 72 includes a plate-shaped contact portion 72 integrally extending outward from the outer periphery of the contact portion 71, and a seal portion 74 integrally extending substantially perpendicularly forward from the outer periphery of the contact portion 72. Contact part 72
Triangular beads 75 on the front and rear sides
Are integrally projected on the front side and one on the rear side, respectively.

In FIG. 1, reference numeral 8 denotes a mounting cap made of resin. The mounting cap 8 has a thin hollow cylindrical shape, and has a through hole 80 at the center. The mounting cap 8 is detachably attached to the edge of the rear opening 11 of the housing 1 by means of engagement between the housing 1 and the mounting cap 8, and the contact portion 7 of the waterproof cover 7.
2, the triangular bead 75 and the seal portion 74 are pressed against the edge of the opening 80 of the mounting cap 8 and the edge of the rear opening 11 of the housing 1. Then, the boss 70 of the waterproof cover 7 is externally fitted to the base 41 of the light source bulb 4,
Water is prevented from entering the lamp chamber 14 through the rear opening 11 of the housing 1.

Thus, when the light source bulb 4 is turned on, the light from the light source bulb 4 is reflected by the reflection surface 32 of the reflector 3, and the reflected light is emitted to the outside through the lens 2 in a predetermined light distribution pattern. On the other hand, since the light from the light source bulb 4 and incident on the ineffective reflection surface of the reflector 3 is blocked by the blocking unit 60 of the shade 6, there is no possibility of irradiating glare light. Also, the engaging portion 5 of the mounting spring 5
2 is removed from the engagement groove 360 of the reflector 3,
The light source bulb 4 can be removed from the reflector 3.

[0011]

However, in the above-mentioned conventional vehicle lighting device, the mounting spring 5 is mounted on the reflector 3 by the screw 34 via the mounting plate 54, so that the mounting plate 54 and the screw 34 are not used. There are problems such as a large number of parts.

An object of the present invention is to provide a vehicular lamp capable of reducing the number of parts.

[0013]

According to the present invention, a reflector is provided with a mounting recess and an engaging groove, respectively, and a mounting spring is provided with a mounting portion mounted in the mounting recess of the reflector and an engaging groove of the reflector. And an engaging portion for attaching the light source bulb to the reflector in combination .
The reflector is an undercut made of a thermosetting resin.
The mounting spring,
Is rotatably mounted in the mounting recess of the reflector
Mounting portion, which is engaged with the engagement groove of the reflector,
An engagement portion for attaching the light source bulb to the reflector;
The first feature is that the reflector is
When the engaging part of the mounting spring is engaged with the engaging groove of the
The mounting part of the mounting spring is in the mounting recess of the reflector.
In a non-contact state, the mounting recess
A second feature is that the structure is such that no force is applied .

[0014]

According to the present invention, the mounting portion of the mounting spring can be mounted in the mounting recess of the reflector without using a mounting plate and a screw like a conventional vehicle lighting device. As a result, the number of parts can be reduced. In addition, when the spring is attached, the spring
It can prevent stress from being applied by elastic action.
You.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicular lamp according to the present invention will be described below with reference to FIGS. 9 through FIG.
The same reference numerals as 1 denote the same components. In the figure, reference numeral 330 denotes a mounting recess. The mounting recess 330 is provided at a lower portion of a rear side peripheral portion of the rear opening 31 of the reflector 3 made of, for example, a thermosetting resin (BMC). The mounting recess 330 is formed without undercut in the reflector 3 made of, for example, thermosetting resin (BMC) which is strong against heat but brittle in strength. That is, the mounting recess 33 described above is moved in the direction in which the molding die for molding the reflector 3 is removed (the moving direction of the moving die and the direction of arrow A in FIG. 2).
0 is located at the opening and the bottom.

In the drawing, reference numeral 331 denotes a groove for mounting the mounting spring 5. The groove 331 is provided in the mounting recess 33.
0 is provided in parallel on both left and right sides so as to communicate with the mounting recess 330.

In the mounting spring 5, the U-shaped mounting portion 50 has a slightly divergent left and right leg portion in a normal state as shown in FIG. 6A.
The outer diameter of the center of the mounting portion 50 of the mounting spring 5 is slightly smaller than the width of the mounting recess 330 of the reflector 3. The outer diameters of the left and right legs of the mounting portion 50 of the mounting spring 5 are substantially equal to or slightly smaller than the width of the groove 331 of the reflector 3.

The dimensional relationship between the reflector 3 and the mounting spring 5 is shown in FIG.
When the engaging portion 52 of the mounting spring 5 is engaged with the engaging groove 360, the mounting portion 50 of the mounting spring 5 is not in contact with the inner surface of the mounting concave portion 330 of the reflector 3, ie, the upper lower surface of the mounting concave portion 330 A gap t is provided between the mounting portion 50 and the upper surface of the mounting portion 50, and the dimensional relationship is such that stress due to the elastic action of the mounting spring 5 is not applied to the thin upper portion of the mounting concave portion 330. In short, the engaging portion 5 of the mounting spring 5
When the upper surface of the mounting portion 50 of the mounting spring 5 comes into contact with the lower surface of the mounting concave portion 330 of the reflector 3 when the 2 is engaged with the engaging groove 360 of the reflector 3, the engaging groove 360 of the reflector 3 is used. Is positioned slightly below (on the side of the mounting recess 330).

Next, the mounting portion 50 of the mounting spring 5
The procedure for mounting the reflector 3 in the mounting recess 330 of the reflector 3 will be described. First, the operating part 5 of the mounting spring 5
3 is positioned on the lower side, and the center of the mounting portion 50 of the mounting spring 5 is positioned above the mounting recess 330 of the reflector 3. At this time, the right and left legs of the mounting portion 50 of the mounting spring 5 are in the normal state as shown in FIG.
As shown in (A), it has a slightly divergent shape,
In this state, the left and right side legs of the mounting portion 50 hit the outer edges of the groove 331 of the reflector 3, and the mounting spring 5 cannot be mounted on the reflector 3. Then, the left and right side legs of the mounting portion 50 of the mounting spring 5 are bent in the direction of arrow A in FIG. 6A with a finger or the like so as to be fitted to the two parallel grooves 331 of the reflector 3 (FIG. 6A).
See).

Next, as shown in FIG. 6B, the mounting portion 50 of the mounting spring 5 is moved in the direction of arrow B with the left and right side legs of the mounting portion 50 bent in parallel (FIG. 6B).
(See (B)) and the mounting portion 50 of the mounting spring 5.
The two left and right legs of the reflector 3 are provided in two parallel grooves 331 of the reflector 3.
(See FIG. 7A).

Then, as shown in FIG. 7B, the mounting portion 50 of the mounting spring 5 is moved in the directions indicated by the arrows C and D while the left and right side legs of the mounting portion 50 are flexed in parallel. 7 (B), the center of the mounting portion 50 is positioned in the mounting recess 330 of the reflector 3 (see FIG. 8 (B)).

Then, by releasing a finger or the like from the left and right leg portions of the mounting portion 50, as shown by the arrow E in FIG. It elastically contacts the outer edge of the groove 331 of the reflector 3. As a result, the mounting portion 50 of the mounting spring 5 is
Is attached to the attachment recess 330.

As described above, since the mounting portion 50 of the mounting spring 5 is mounted in the mounting recess 330 of the reflector 3, the left and right legs of the mounting portion 50 elastically contact the edges of the groove 331 of the reflector 3. 6A, the mounting portion 50 of the mounting spring 5 cannot be removed from the mounting recess 330 of the reflector 3 unless the left and right side legs of the mounting portion 50 are bent in the direction of the arrow A in FIG.

Next, how to attach the light source bulb 4 to the reflector 3 of the vehicle lamp of the present invention configured as described above will be described. First, as shown in FIGS. 1 and 2, the engaging portion 52 of the mounting spring 5 is engaged with the engaging groove 3 of the reflector 3.
60, and the operation part 53 side of the mounting spring 5 is positioned downward. In this state, the glass bulb 40 of the light source bulb 4 is moved from the rear opening 11 of the housing 1 and the rear opening 31 of the reflector 3 to the front reflecting surface 3 of the reflector 3.
2 and the three engaging claws 44 of the light source bulb 4 are engaged with the three concave portions 36 of the reflector 3, respectively.
The light source bulb 4 is temporarily fixed to the reflector 3. Next, the mounting spring 5 is rotated in the direction of arrow B in FIG. 2, and the operation section 53 of the mounting spring 5 is positioned upward as shown in FIG. Then, the operating portion 53 of the mounting spring 5 is bent in the direction of arrow C in FIG. 3 with a finger or the like to cause the elastic contact portion 51 of the mounting spring 5 to elastically contact the flange portion 42 of the light source bulb 4. The engaging portion 5 of the mounting spring 5
The light source bulb 4 is removably attached to the reflector 3 via the attachment spring 5 by engaging 2 with the engagement groove 360 of the reflector 3.

At this time, the engaging portion 52 of the mounting spring 5
Has a gap t between the upper lower surface of the mounting recessed portion 330 and the upper surface of the mounting portion 50 due to the above-described dimensional relationship.
No stress due to the elastic action of the mounting spring 5 is applied to the thin upper part. As a result, it is suitable for the reflector 3 made of, for example, a thermosetting resin (BMC) which is strong against heat but brittle in strength.

Since the vehicle lamp of the present invention in this embodiment has the above-described configuration, the mounting portion 50 of the mounting spring 5 can be connected to the reflector 3 without using a mounting plate and a screw like a conventional vehicle lamp. Can be attached to the attachment recess 330. As a result, the number of parts can be reduced.

In particular, in this embodiment, since the mounting recess 330 is formed in the reflector 3 without undercut, it is strong against heat but brittle in strength, for example, a thermosetting resin (B
MC) or the like.

In this embodiment, when the engaging portion 52 of the mounting spring 5 is engaged with the engaging groove 360 of the reflector 3 due to the dimensional relationship between the mounting spring 5 and the reflector 3, the mounting recess 330 Lower surface of upper part and mounting part 50
A gap t is formed between the mounting spring 5 and the upper surface of the mounting recess 5, and no stress is applied to the thin upper portion of the mounting recess 330 by the elastic action of the mounting spring 5. As a result, it is suitable for the reflector 3 made of, for example, a thermosetting resin (BMC) which is strong against heat but brittle in strength.

[0029]

As is apparent from the above description, in the vehicle lamp of the present invention, the mounting portion of the mounting spring is mounted in the mounting recess of the reflector without using a mounting plate and a screw as in a conventional vehicle lamp. Can be. As a result, the number of parts can be reduced.

[Brief description of the drawings]

FIG. 1 is a partial rear view showing an embodiment of a vehicular lamp according to the present invention, in which a mounting spring is in a released state.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a partial rear view of the mounting spring in a temporarily fixed state.

FIG. 4 is a partial rear view in a state where a mounting spring mounts a light source bulb.

FIG. 5 is a sectional view taken along line VV in FIG. 4;

FIG. 6A is a partial rear view showing a state in which a mounting portion of a mounting spring is bent so as to fit into a groove of a reflector;
(B) is a sectional view taken along line BB in (A).

FIG. 7A is a partial rear view showing a state in which a mounting portion of a mounting spring is bent and inserted into a groove of a reflector, and FIG. 7B is a cross-sectional view taken along line BB in FIG. is there.

FIG. 8A is a partial rear view showing a state in which the mounting portion of the mounting spring is positioned in the mounting recess of the reflector, and the mounting portion is elastically in contact with the wall of the groove; FIG. 3 is a sectional view taken along line BB in FIG.

FIG. 9 is a partial rear view of a conventional vehicle lamp, excluding a waterproof cover, a mounting cap, and the like.

FIG. 10 is a sectional view taken along line XX in FIG. 9;

FIG. 11 is a partial rear view of the conventional vehicle lamp, in which an attachment spring is in a released state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Housing, 14 ... Light room, 2 ... Lens, 3 ... Reflector, 32 ... Reflection surface, 330 ... Mounting recess, 331 ... Groove,
Reference numeral 360: engagement groove, 4: light source bulb, 5: mounting spring, 50: mounting portion, 52: engaging portion.

Claims (2)

(57) [Claims] 1. A housing and a front of the housing
The image is defined by the arranged lens, its housing and the lens.
The light room formed, the light source bulb arranged in the light room,
The light from the light source bulb is disposed in the lamp room,
The reflector that reflects to the lens side and the reflector
A mounting spring for mounting the light source bulb
In the obtained vehicle lighting device, the reflector is:Undercut made of thermosetting resin
With a mounting recess and an engagement groove without  The mounting spring is provided in a mounting recess of the reflector.Times
Free to rollA mounting portion to be mounted, and a
Engage the mating groove and take the light source bulb into the reflector
A vehicular lamp having an engaging portion to be attached. The reflector is installed in an engagement groove of the reflector.
When the engaging part of the spring with
The mounting part of the connector is not in contact with the mounting recess of the reflector.
And the mounting recess is not stressed by the mounting spring.
The vehicular lamp according to claim 1, wherein: