JPH0553006U - Vehicle lighting - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the molding of a lamp body having a waterproof cap and to simplify the work of attaching the waterproof cap. A waterproof cap 7 for waterproofing between a rear opening 2b of a lamp body 2 and a socket 6 of a light bulb 5, a resin-made engagement ring 8 engaged with the rear opening of the lamp body, An outer diameter portion is fitted to the engagement ring, and an inner diameter portion thereof is constituted by a rubber cap body 9 fitted in the socket 6. As a result, the engagement ring 8 is attached to the lamp body 2
It becomes possible to engage in the rear opening 2b, and the undercut portion of the lamp body 2 is eliminated to simplify the structure of the molding die. Further, the waterproof cap 7 is attached by engaging the engaging ring 8, which simplifies the mounting work.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp with improved waterproofness.

[0002]

[Prior Art]

 In a vehicular lamp that uses a socket-integrated bulb such as a halogen bulb, the lamp housing 1 is composed of a lamp body 2 and an outer lens 3 as shown in FIG. The socket 6 for supporting the light bulb 5 on the provided reflector 4 or the like is positioned inside the rear opening 2b of the lamp body 2, and an external connector (not shown) is directly connected to this. Therefore, in this type of lamp, it is necessary to waterproof the space between the socket 6 and the rear opening 2b of the lamp body 2, and the waterproof cap 10 is used for this purpose.

The conventional waterproof cap 10 is formed into a donut plate shape integrally formed with rubber or the like, and the middle band portion is formed into a bellows shape for easy elastic deformation, and an inner diameter formed as a small-diameter sleeve 10a thereof. The portion is fitted into the socket 6, and the outer diameter portion formed as the large-diameter sleeve 10b is brought into contact with the rear opening 2b of the lamp body 2 from the outer surface side. Then, in the rear opening 2b, the fixing ring 11 is covered from above the waterproof cap 10, and the fixing ring 11 is engaged with the engaging piece 2d provided in the rear opening 2b, so that the waterproof cap 10 is attached to the lamp body 1. It is fixed to prevent it from falling off. In the figure, 2 is a lens.

[0004]

[Problems to be solved by the device]

 In the vehicular lamp having such a structure, the rear opening 2b of the lamp body 2 is provided with a structure for engaging the fixing ring 11, but the fixing ring 11 surrounds the waterproof cap 10. Since the rear opening 2b is engaged, the engaging piece 2d that engages with the fixing ring 11 needs to be provided on the outer peripheral surface of the rear opening 2b so as to project in the radial direction. Therefore, this engagement piece 2d causes an undercut portion in the rear opening 2b, and a mold for molding the lamp body 1 requires a structure for forming this undercut portion. The structure becomes complicated. In particular, as shown in the figure, in the shape of the lamp body having a concave and convex shape on the back surface, it is difficult to use a mold having a sliding structure due to the adjacent lamp body wall, and it is difficult to mold the lamp body. is there.

Further, when the large-diameter sleeve 10b of the waterproof cap 10 is fitted into the rear opening 2b of the lamp body 2, the waterproof cap 10 is elastically expanded to increase its diameter. Requires a relatively large force, which makes fitting work difficult. Further, since the fixing ring 11 is engaged after the waterproof cap 10 is attached, at least two work steps are required for the attaching process of the waterproof cap 10 and the engaging process of the fixing ring 11, so that the lamp assembly is performed. The work becomes troublesome. An object of the present invention is to provide a vehicular lamp that facilitates the molding of the lamp body and simplifies the work of attaching the waterproof cap.

[0006]

[Means for Solving the Problems]

 In the vehicle lamp of the present invention, a waterproof cap for waterproofing between the rear opening of the lamp body and the bulb socket is provided with a resin engagement ring that is engaged with the rear opening of the lamp body. An outer diameter part is fitted to the mating ring, and the inner diameter part is composed of a rubber cap body fitted to the light bulb socket.

[0007]

[Action]

 The engaging ring can be engaged in the rear opening of the lamp body, and the undercut portion is not required, and the structure of the molding die can be simplified. In addition, the waterproof cap can be attached at the same time by engaging the engaging ring, which simplifies the mounting work.

[0008]

【Example】

 Next, the present invention will be described with reference to the drawings. FIG. 2 is a front view of an embodiment of a vehicular lamp of the present invention, and FIG. 1 is an enlarged sectional view taken along the line AA of FIG. 2, in which the present invention is applied to a combination headlamp on the right side of the vehicle. Is shown. A turn signal lamp is arranged on the right side of the vehicle of this combination headlamp, but its illustration is omitted. In these drawings, reference numeral 1 denotes a lamp housing, which is composed of a lamp body 2 and an outer lens 3 attached to a front opening thereof. The lamp body 2 has a rear surface with a large unevenness, a high beam lamp HL is formed on the center side of the vehicle, and a low beam lamp LL is formed outside thereof.

In the high beam lamp HL, a reflector 4 is fixed in the lamp body 2, and a central opening 4a is opened at a position of the lamp body corresponding to a central portion of the reflector 4, where a socket mounting portion having a bayonet structure is provided. The light bulb socket 6 having the above is fitted and supported, and the light bulb 5 is supported at the focal position of the reflector 4. The low beam lamp LL is constructed as a lamp assembly having an elliptic spherical shape as a whole, and is fitted and attached to the lamp body 2. In this lamp assembly, an elliptical reflector 21 and a lens 22 attached to the front surface of the reflector 21 constitute an assembly housing, and a bulb mounting attached to an opening 24 provided in the center of the reflector 21. The tool 25 supports the light bulb 23 in the assembly housing. A shade 26 is arranged between the light bulb 23 and the lens 22. 27 is a back cover.

The outer lens 3 attached to the lamp body 2 is sealed by inserting a seal leg portion 3a provided on the peripheral edge of the outer lens 3 into a groove portion 2a provided at the opening edge of the lamp body 2. It is sealed with an agent. The central opening 4a of the reflector 4 is located in a circular rear opening 2b formed on the rear surface of the lamp body 2, and the socket 6 is integrated in the central opening 4a of the reflector 4. The light bulb 5 thus caused is attached. A waterproof cap 7 is fitted and attached between the socket 6 and the rear opening 2b of the lamp body 2 to waterproof the lamp body 2 and the socket 6. Needless to say, a connector (not shown) is connected to the socket 6.

As shown in the perspective view of FIG. 3 and the partially exploded perspective view of the waterproof cap 7 shown in FIG. 4, the engaging ring 8 made of resin and the engaging ring 8 are shown. 8 and a rubber cap 9 fitted on the outside of the same. The engagement ring 8 is formed in a cylindrical shape that can be fitted into the rear opening 2b of the lamp body 2, and a flange 81 is provided on the peripheral surface thereof. A plurality of engaging pieces 82 protruding in the radial direction are provided at a plurality of positions on the outer peripheral surface closer to the lower edge than the flange 81. The engaging piece 82 corresponds to a plurality of cutout grooves 2c (see FIG. 5) provided on the inner peripheral edge of the rear opening 2b of the lamp body 2. Further, radial ribs 83 are provided on the upper edge of the engagement ring 8 at positions facing each other on the diameter line.

The cap body 9 is formed in a circular ring plate shape, and the middle band portion 91 is formed in a bellows shape. The inner diameter portion is formed as a small-diameter sleeve 92 that fits into the socket of the light bulb, and a plurality of annular projections 93 provided on the inner surface of the inner diameter portion closely contact the peripheral surface of the socket 6 to ensure its waterproofness. The outer diameter portion is formed as a large-diameter sleeve 94. The large-diameter sleeve 94 covers the upper edge of the engagement ring 8 and has a groove 95 formed on the inner peripheral surface thereof in the flange 81. It is fitted from the outside. Further, rib enclosing portions 96 for covering the ribs 83 of the engaging ring 8 are provided at positions facing each other on the diameter line of the large-diameter sleeve 94.

When attaching the waterproof cap 7 to the rear opening 2 b of the lamp body 2, the small-diameter sleeve 92 of the cap body 9 is fitted in the socket 6 and the large-diameter sleeve 94. The engaging ring 8 is engaged with the rear opening 1b. At this time, as shown in a partially enlarged view of FIG. 5, the engaging piece 82 of the engaging ring 8 is inserted into the lamp body 2 through the notch groove 2c of the rear opening 2b, and then the entire waterproof cap 7 is removed. By rotating it by a required angle, a rear opening is formed between the engagement piece 82 of the engagement ring 8 and the flange 81, and actually between the engagement piece 82 and the end surface of the large-diameter sleeve 94 of the cap body 9. The inner edge of the portion 2b is clamped so that the engagement ring 8, that is, the outer peripheral portion of the waterproof cap 7 is engaged with the rear opening 2b by the bayonet type engagement structure.

At this time, needless to say, in the small-diameter sleeve 92, the protrusion 93 protects the space between the small-diameter sleeve 92 and the peripheral surface of the socket 6. The rotation of the waterproof cap can be performed by gripping the rib 83 provided on the engagement ring 8 from the outside of the rib surrounding portion 96 of the cap body 9 and operating it.

Therefore, in this waterproof cap, the engagement ring 8 is inserted into the rear opening 2b of the lamp body 2 so that the inner edge portion of the rear opening 2b is provided between the engaging piece 82 and the end surface of the cap body 9. Since it is sandwiched, it is not necessary to provide a projecting piece for engagement on the outer peripheral surface of the back opening 2b, and an undercut portion does not occur. As a result, the structure of the rear opening 2b of the lamp body 2 can be simplified, and even if the lamp body has an uneven shape, a slide mold is not required. Therefore, a mold for molding the lamp body can be obtained. The complexity of the structure is avoided, and the lamp body is easily molded.

Further, since the waterproof cap 7 has the engaging ring 8 and the cap body 9 which are integrally formed, when the engaging ring 8 is engaged with the lamp body 2, the cap body 9 is attached at the same time. Therefore, the fitting work while expanding the diameter of the cap body 9 is not required, and the attaching process of the waterproof cap can be made one process, and the working process can be simplified.

[0017]

[Effect of the device]

 As described above, according to the present invention, the waterproof cap is composed of the resin engagement ring engaged with the rear opening of the lamp body and the rubber cap body fitted to the engagement ring. Therefore, it is possible to adopt a configuration in which the engaging ring enters the inside of the rear opening, and it is not necessary to provide an undercut portion in the rear opening, and the structure of the mold for molding the lamp body is simplified, Make the lamp body easy to mold. Also, since the waterproof cap can be attached by engaging the engagement ring with the rear opening, the waterproof cap attaching work process can be made one process, and the work process can be simplified.

[Brief description of drawings]

1 is an enlarged cross-sectional view taken along the line AA of FIG. 2 showing an embodiment of the present invention.

FIG. 2 is a front view of an embodiment of the present invention.

FIG. 3 is a perspective view of a waterproof cap.

FIG. 4 is a partially exploded perspective view in which a part of FIG. 3 is cut away.

FIG. 5 is an enlarged cross-sectional view of an engaging portion between a rear opening and a waterproof cap.

FIG. 6 is a partially cutaway plan view of a conventional lamp having a waterproof cap.

[Explanation of symbols]

 2 Lamp body 2b Rear opening 5 Light bulb 6 Socket 7 Waterproof cap 8 Engagement ring 9 Cap body 82 Engagement piece

Claims (1)

[Scope of utility model registration request] 1. A vehicular lamp in which a light bulb socket is supported in a rear opening of a lamp body, and a waterproof cap is provided between the light bulb and the rear opening, wherein the waterproof cap is the rear opening of the lamp body. And a rubber cap body having an outer diameter portion fitted to the engagement ring and having an inner diameter portion fitted into the light bulb socket. Characteristic vehicle lighting.