JP2540133Y2 - Lens fixing structure for vehicle lamp - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a sealing groove formed around a front portion of a housing which is opened at a front surface thereof, and a flange portion projecting from a peripheral end portion of a lens is inserted and sealed. The present invention relates to a lens fixing structure for a vehicle lamp for fixing a lens to a housing.

[0002]

2. Description of the Related Art When a lens 13 of a rear combination lamp 1 of an automobile shown in FIG. 4 is fixed to an opening on the front surface of a lamp housing, as shown in FIG. A flange 14 projecting behind the peripheral end of the lens 13 is inserted into a U-shaped seal groove 12 formed in the front part, and is fixed by various methods while being sealed with a sealant 15. ing.

FIG. 6 is a sectional view showing each of these methods applied to the line BB of FIG. In the case of FIG. 6A, the thicker flange portion 14 inserted into the seal groove 12 is sealed with a sealing material 15, and the nail 5 is driven into the flange end face from the groove bottom face. In FIG. 6B, a projection 14 a is formed on the flange portion 14, and is engaged with an engagement hole 12 a formed on an extension of the front side surface of the seal groove 12. In FIG. 6C, the screw seat 6 is protruded toward the front of the flange portion 14 of the lens 13, and the screw 8 is screwed therein.

[0004]

The method of FIG. 6A requires not only a nailing operation but also, in some cases, an insufficient filling of the sealing material 15 or water entering through the nailing portion. . In FIG. 6B, the flange portion 14 is shown.
In order to assemble while deforming, there is a case where the sealing material 15 is scraped out or the bias or cut thereof occurs,
Similarly, it is not completely waterproof. Further, the depth D of the squeezing of the body 2 becomes deeper than the general portion or the nailing method described above, which also affects the formability of the body 2. In FIG. 6C, even if the screw is screwed with, for example, a 3 mm screw, the diameter of the head portion and the screwed portion 7 are further increased, and the influence on the molding of the body 2 is correspondingly further increased. It is necessary to form them separately.

SUMMARY OF THE INVENTION In view of the foregoing, an object of the present invention is to provide a lens fixing structure for a vehicle lamp of the kind described at the beginning, in which a lens is fixed to a housing in a small space without deteriorating sealing properties. And

[0006]

According to the present invention, a U-shaped sealing groove formed around a front portion of a housing which is opened at a front surface is provided behind a peripheral end portion of a lens located at a front surface. With the flange part inserted and sealed with a sealing material,
In a lens fixing structure of a vehicle lamp for fixing a lens to a housing, in order to achieve the above object,
Facing the lens peripheral edge on the front side with respect to the flange part,
And a locking piece with an engaging hole is protruded, and in the seal groove,
By forming a U-shaped locking groove adjacent to the front side and opening to the outside of the housing in the direction opposite to the seal groove, a locking piece is inserted from an opening formed on the bottom surface of this locking groove. A wedge-shaped spring is press-fitted between the locking piece and the front side surface of the locking groove, and a projection formed on the wedge-shaped spring is engaged with the engagement hole.

[0007]

The flange is inserted into the seal groove filled with the sealing material, and at the same time, the locking piece is inserted from the opening formed on the bottom surface of the locking groove. Next, a wedge-shaped spring is press-fitted between the locking piece and the front side surface of the locking groove, and the projection is engaged with the engagement hole.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Rear combination lamp 1 shown in FIG.
Next, an embodiment to which the present invention is applied will be described.
FIGS. 1 and 2 show a fixing structure according to this embodiment at a line BB in FIG.

Behind the peripheral end of the lens 13 located at the front opening of the rear combination lamp 1, a flange portion 24 is provided to protrude over the entire circumference. And
A part of the peripheral edge of the lens 13 is separated from and in front of the flange portion 24 and has a locking piece 25 having an engagement hole 25a formed therein.
Is protruding. On the front surface of the housing 11, a seal groove 26 for inserting the flange portion 24 is formed over the entire circumference, and a housing 28 is disposed adjacent to the seal groove 26 in a direction opposite to the seal groove 26 by using the front side surface 28 of the seal groove in common. A U-shaped locking groove 27 that opens outward is formed.

An opening 27a into which the locking piece 25 is inserted is formed in the bottom surface and a part of the side surface 28 of the locking groove. A wedge-shaped leaf spring 30 is press-fitted between the locking piece 25 and the front side wall surface 27b of the locking groove 27, and its projection 31
Are engaged with the engagement holes 25a. Lens 1
3 is fixed at a plurality of peripheral positions by such a structure or another structure.

When assembling the rear combination lamp 1, as shown in FIG. 2A, the flange portion 24 is inserted into the seal groove 26 in which the seal material 15 is mounted, and at the same time, the locking piece 25 is inserted into the opening 27a. Then, the wedge-shaped leaf spring 30 is compressed, and the projection 31 is engaged with the engagement hole 25a as shown in FIG. As a result, the projection 31 is securely engaged with the engagement hole 25 a by the pressure of the leaf spring 30 in the expanding direction, and the locking piece 25 is pressed against the front side wall surface 27 b of the locking groove 27, and the lens is pressed. 13 is pressed. As a result, the lens can be fixed in a small space independently of the seal groove 26 structurally.

The wedge-shaped spring described above can be made of synthetic resin instead of spring steel. The locking piece 25
By forming two engagement holes in the vertical direction in FIG.
As shown in FIG. 5, it is conceivable to form a wedge-shaped spring 35 having projections 36 at two corresponding positions with a wire spring. The present invention is also applicable to a front combination lamp and the like.

[0013]

As described above, according to the fixing structure of the lens to the lamp housing according to the present invention, since the seal groove is not structurally affected, it is possible to surely avoid water entering due to deformation of the seal portion. Can be. Since it can be fixed using a small space along the seal groove, there is no influence on the body side. Fixing with a wedge spring allows easy setting with fingers without tools.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a lens fixing structure according to an embodiment of the present invention.

FIGS. 2A and 2B are cross-sectional views of the lens fixing structure, wherein FIG. 2A shows an assembling process, and FIG.

FIG. 3 is a perspective view showing a wedge-shaped spring according to another embodiment of the lens structure.

FIG. 4 is a perspective view of a rear combination lamp to which the present invention is applied.

FIG. 5 is a sectional view of the rear combination lamp, taken along line AA of FIG. 4;

6 is a cross-sectional view of the conventional rear combination lamp, taken along line BB of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rear combination lamp 11 Housing 13 Lens 15 Sealing material 24 Flange part 25 Locking piece 25a Engagement hole 26 Seal groove 27 Locking groove 27a Opening 30 Wedge-shaped leaf spring 31, 36 Projection 35 Wedge spring

Claims (1)

(57) [Scope of request for utility model registration] 1. A sealing member is inserted into a U-shaped sealing groove formed around a front portion of a housing opened at a front surface, the flange portion projecting behind a peripheral end portion of a lens positioned at a front surface. In a lens fixing structure for a vehicle lamp for fixing a lens to a housing in a state where the lens is sealed in a state, the lens peripheral edge is opposed to a flange portion on a front side and an engagement hole is formed. A U-shaped engagement groove is formed in the seal groove, which is formed adjacent to the front side of the seal groove, and is open to the outside of the housing in a direction opposite to the seal groove, and is formed on the bottom surface of the engagement groove. By inserting the locking piece from the opening, a wedge spring is press-fitted between the locking piece and the front side surface of the locking groove, and the protrusion formed on the wedge spring is Vehicle lamp characterized by being engaged with an entry hole Lens fixing structure.