JPH1059059A - Light for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent efficiently infiltration of water by forming a screw insertion leg which penetrates a sitting part on a lens for closing a front open port of a lamp housing and forming a seal part which contacts a packing on an outside periphery of the screw insertion leg. SOLUTION: On a front surface opening 23a of a lamp housing 23, a leg attachment groove 23c extending along an entire fringe part of the front surface opening 23a and a sitting part 23b located inside of the leg attachment groove 23c in the vicinity of the open port end of the front surface opening 23a are formed. An attachment screw 25 which is screwed on a clip nut 30a provided on a vehicle body bracket 30 penetrates only a screw insertion leg 34a projecting from the lens 24. From a rear surface of a lamp housing 23 or a surface of the lens 24, water drop which is conveyed on the attachment screw 25 from the surface of the lens 24 or the rear surface of the lamp housing 23 does not infiltrate into the light interior which is formed with the lamp housing 23 and the lens 24. Since a contact force of the sitting part 23b and the seal part 24b against the packing 27 does not change, the sealing property of the packing 27 can be stabilized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp adapted to be mounted on a vehicle body with screws.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 2, a vehicular lamp 1 which is mounted on a vehicle body with screws 5 is known (for example, see Japanese Utility Model Laid-Open No. 6-23109).

[0003] Such a vehicle lamp 1 includes a lamp housing 3 holding a bulb 2 and a lens 4 for closing a front opening 3 a of the lamp housing 3.

A seal groove 3g is formed in the lamp housing 3 along the opening edge of the front opening 3a, and a thermoplastic adhesive (for example, hot melt) 6 is formed in the seal groove 3g.
Is injected. A mounting portion 3d including a boss 3b and a seat 3c is formed near the opening end of the front opening 3a. The seat 3c is provided with a packing 7.

In the vicinity of the peripheral edge on the rear surface side of the lens 4, a leg 4d is formed so as to protrude along the peripheral edge. Also,
On the back surface of the lens 4, a boss 4a facing the seat 3c is formed. On the outer periphery of the boss portion 4a, a tubular seal portion 4b abutting on the packing 7 is formed.

In such a vehicle lamp 1, the leg 4d of the lens 4 is engaged with the seal groove 3g, and the packing 7 is formed by the seal 4b of the lens 4 and the seat 3c of the lamp housing 3. After the mounting screws 5 are passed through the screw insertion holes 3f and 4c formed in the mounting portion 3d and the boss portion 4a, the vehicle lighting device 1 is screwed into the vehicle body 30 so that the vehicle lighting device 1 is mounted on the vehicle body. Be attached.

[0007]

However, in such a vehicular lamp 1, water droplets transmitted from the rear surface of the lamp housing 3 and the surface of the lens 4 through the mounting screw 5 are not removed.
After passing between the mounting screw 5 and the screw insertion holes 3f and 4c,
There is a risk of intrusion into the lamp room formed by the lamp housing 3 and the lens 4.

Further, when the vehicular lamp 1 is mounted on the vehicle body 30 by the mounting screw 5, if the tightening torque of the mounting screw 5 varies, the gap between the lamp housing 3 and the lens 4, especially the seat 3c and the seal 4b, And packing 7
There is a problem that the contact force varies from product to product and the watertightness varies, resulting in unstable quality.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicular lamp capable of efficiently preventing inundation, and further improving the resistance to infiltration by keeping the contact force against the packing constant. .

[0010]

According to the present invention, a seat is formed near an opening end of a front opening of a lamp housing, a packing is fitted to the seat, and the front opening is provided. The gist of the present invention is that a screw insertion leg penetrating the seat is formed on the lens for closing the lens, and a seal portion that comes into contact with the packing is formed on the outer periphery of the screw insertion leg.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicular lamp according to the present invention will be described below with reference to FIG.

1 (a) and 1 (b), a vehicular lamp 21 includes a lamp housing 23 having a bulb 22 disposed therein.
And a lens 24 fixed to the housing 23 via a hot melt adhesive 26.

In the front opening 23a of the lamp housing 23, a leg mounting groove 23c extending along the entire periphery of the front opening 23a, and as shown in FIG. 1C, a leg mounting groove near the opening end of the front opening 23a. The seat portion 23 located inside the groove 23c
b are formed, and an insertion hole 23d is provided at the center of the seat 23b. A packing 27 is fitted around the periphery of the insertion hole 23d.

A leg 24c that engages with the leg mounting groove 23c and a screw insertion leg 24a that penetrates the insertion hole 23d are formed on the peripheral edge of the rear surface of the lens 24. Screw insertion leg 2
4a has a stepped substantially cylindrical shape having a base portion as a large-diameter portion 24a1 and a distal end portion as a small-diameter portion 24a2, and an annular seal portion 24b protrudes from an outer periphery of the large-diameter portion 24a1. I have.

In the above configuration, in order to assemble the vehicular lamp 21, first, an appropriate amount of hot melt adhesive 26 is injected into the leg mounting groove 23c provided in the lamp housing 23,
The lamp housing 23 and the lens 24 are joined by engaging the leg 24c provided on the lens 24 with the leg mounting groove 23c.

At this time, the screw insertion leg 24a is inserted into the insertion hole 23d.
To penetrate the seat portion 23b, and
4b is in contact with the packing 27.

When the vehicle lamp 21 is mounted on the vehicle body, the mounting screw 25 is inserted into the screw insertion hole 24d, and the screw portion 25a is screwed to the clip nut 30a tightly attached to the vehicle body bracket 30. Can be fixed.

Also, the attachment to the vehicle body is shown in FIG.
As shown in (a) and (b), after the bracket 23e integral with the lamp housing 23 is engaged with the vehicle body panel 35 so as to be hooked, the bracket 23e is fixed by the mounting screw 25 at a position opposite to the engaged position. However, it is also possible to fix the bracket 23e side with the mounting screw 25 according to the shape of the vehicle body or the lamp.

As described above, the mounting screw 25 screwed to the clip nut 30a provided on the vehicle body bracket 30 passes only through the screw insertion leg 24a protruding from the lens 24, and the lamp housing 23 and the lens 24 There is no gap between the two, so there is no gap between them.
Water droplets transmitted from the rear surface of the lamp housing 23 or the surface of the lens 24 to the mounting screw 25 form the lamp housing 2.
There is no water in the lamp room formed by the lens 3 and the lens 24.

Further, the vehicle lighting fixture 2 is fixed by the mounting screw 25.
When the mounting screw 1 is mounted on the vehicle body 30, even if the tightening torque of the mounting screw 25 varies,
Since the contact force between the seat portion 23b and the seal portion 24b does not change, the sealing performance of the packing 27 can be stabilized.

[0021]

As described above, in the vehicular lamp according to the present invention, the seat is formed near the opening end of the front opening of the lamp housing, the packing is fitted to the seat, and the front opening is formed. A screw insertion leg that penetrates the seat portion is formed on the lens that closes the lens, and a seal portion that contacts the packing is formed on the outer periphery of the screw insertion leg, so that water can be efficiently prevented. In addition, the water contact resistance can be further improved by keeping the contact force against the packing constant.

[Brief description of the drawings]

FIG. 1 shows a vehicle lamp according to an embodiment of the present invention,
(A) is a front view of a vehicular lamp, and (b) is an A of FIG.
FIG. 2C is a cross-sectional view taken along the line A, and FIG.

2 (a) is a front view of the vehicle lamp, FIG. 2 (b) is a cross-sectional view taken along the line CC of FIG. 2 (a), and FIG. (D) is an enlarged cross-sectional view of a main part of a D part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 ... Vehicle lamp 23 ... Lamp housing 23a ... Front opening 23b ... Seat 24 ... Lens 24a ... Screw insertion leg 24b ... Seal part 27 ... Packing

Claims (1)

[Claims] 1. A seat is formed near an opening end of a front opening of a lamp housing, a packing is fitted to the seat, and a screw insertion leg penetrates through the seat to a lens closing the front opening. And a seal portion for contacting the packing is formed on the outer periphery of the screw insertion leg.