JPH071691Y2 - Inner lens mounting structure for vehicle lighting - Google Patents

Description

[Detailed description of the device]

[Industrial applications]

The present invention relates to a configuration of a vehicular signal lamp such as a rear combination lamp, and more particularly, to a configuration of a lamp having a multi-layer lens configuration such as using two inner lenses.

[Prior art]

FIG. 3 shows an example of a conventional inner lens mounting structure of this type of lamp, and in this type of lamp, the inner inner lens 91 and the outer inner lens 91 are usually arranged so that the light emitting area is not narrowed. The inner surface 93a of the housing 93 is often formed with the same outer diameter, and a stepped portion 93b and an appropriate number of fitting holes 93c are provided on the inner side surface 93a of the housing 93. For example, the inner surface integrated by ultrasonic welding or the like. The inner lens 91 and the outer inner lens 92 are placed on the step portion 93b, and either one of them, for example, the projection 91a provided on the inner inner lens 91 side is fitted into the fitting hole 93c and locked. It is a thing.

[Problems to be solved by the device]

However, the above-described conventional configuration requires an additional step such as ultrasonic welding, increases the number of assembling steps, and causes a problem of increasing the cost of this lamp. Further, for example, the inner inner lens 91 is assembled. When the structure is loose, there is a problem that the integrated outer inner lens 92 is also loosened, and it has been a problem to solve these problems. Although illustration is omitted, as a solution to the above-mentioned problem, a protrusion is provided on each of the inner inner lens 91 and the outer inner lens 92, and a corresponding fitting hole is also provided on the inner side surface 93a of the housing 93. In some cases, a configuration may be adopted. In this case, since both inner lenses 91 and 92 have a complicated intricate shape and the number of fitting holes provided in the housing 93 is increased, both inner lenses 91 and 92, the housing 93
All the shapes are complicated, and the molds are also complicated accordingly, which causes a cost increase, and cannot be a fundamental solution to the problem.

[Means for Solving the Problems]

As a concrete means for solving the above-mentioned conventional problems, the present invention provides an inner lens mounting structure for a vehicular lamp when two layers of an inner inner lens and an outer inner lens are mounted on a housing in a layered manner. The inner side surface is provided with a step portion on which the inner inner lens is placed, and a fitting hole which is provided on the wide diameter side of the step portion and has a substantially convex wide portion which is in contact with the step portion. The inner inner lens having the same outer diameter as the radial side is provided with a first hook portion engaging with the wide portion of the fitting hole, and the outer inner lens having the same outer diameter as the inner inner lens is fitted with the first hook portion. A second hook portion that is engaged with the narrow portion of the attachment hole is provided, and an edge portion that presses the inner inner lens against the step portion by the engagement of the second hook portion is provided. Lamp By providing the inner lens mounting structure, it is intended to solve the conventional problems described above.

【Example】

Next, the present invention will be described in detail based on an embodiment shown in the drawings. 1 and 2 show an inner lens mounting structure for a vehicular lamp according to the present invention. In the drawings, reference numeral 1 indicates a housing, reference numeral 2 indicates an inner inner lens, and reference numeral 3 indicates an outer side. It is an inner lens. First, the inner surface 11 of the housing 1 is similar to the conventional example in that a step portion 12 is provided, but the appropriate number of fitting holes 14 provided on the wide diameter side 13 of the step portion 12 have a wide width. Part 14
The a and the narrow width portion 14b are formed in a substantially convex shape, and the wide width portion 14a is provided in contact with the step portion 12. The inner inner lens 2 is a stepped portion of the housing 1.
It is formed with an outer diameter substantially the same as the wide diameter side 13 of 12, and is fitted on the wide diameter side 13 and placed on the step portion 12, and at this time, the fitting hole 14 is formed. The first hook portion 21 which has the same width as the wide width portion 14a and which is engaged with the position is provided.
Is provided. The outer inner lens 3 is formed to have the same outer diameter as the inner inner lens 2 and has the same width as the narrow width portion 14b of the fitting hole 14 corresponding to the position where the fitting hole 14 is provided. The second hook portion 31 that is engaged with and is attached to the edge portion 32 is formed. Next, the operation and effect of the mounting structure of the present invention having the above-described structure will be described. For the engagement between the housing 1 and the inner inner lens 2, the first hook portion 21 is inserted in the fitting hole 14 in the same direction. Therefore, the fitting hole 14 cannot be inserted unless the hole height D includes the protruding portion of the hook structure of the first hook portion 21, and thus the play after the engagement is unavoidable. However, the outer inner lens 3 continues
The outer edge of the outer inner lens 3 by attaching
32 presses the inner inner lens 2 against the step portion 12, and in that state, the second hook portion 31 engages with the narrow width portion 14b of the fitting hole 14, so that both inner lenses 2 and 3 are loose. Will not occur at all.

[Effect of device]

As described above, according to the present invention, the fitting hole provided in the housing has a substantially convex shape including the wide width portion and the narrow width portion, and the inner inner lens is fitted into the wide width portion of the fitting hole, Furthermore, the outer inner lens has a mounting structure in which the inner inner lens is pressed against the stepped portion so as to be fitted into the narrow width portion of the fitting portion, thereby reducing the number of steps by eliminating the need for additional steps such as welding. It has excellent effects on efficiency improvement and cost reduction. At the same time, it has excellent effect on quality improvement as it does not cause backlash on both inner lenses, and the mold structure is simple. This is effective in further reducing costs.

[Brief description of drawings]

FIG. 1 is a perspective view showing an essential part of an inner lens mounting structure for a vehicle lamp according to the present invention, and FIG. 2 is a perspective view of FIG.
A sectional view taken along the line II-II, and FIG. 3 are perspective views showing a main part of a conventional example. 1 …… Housing 11 …… Inside surface, 12 …… Step portion 13 …… Wide diameter side 14 …… Fitting hole 14a …… Wide portion, 14b …… Narrow width portion 2 …… Inner inner lens 21 …… First Hook part 3 …… Outer inner lens 31 …… Second hook part 32 …… Edge part

Claims (1)

[Scope of utility model registration request] 1. An inner lens mounting structure for a vehicular lamp when two layers of an inner inner lens and an outer inner lens are mounted on a housing in a layered manner, and a step for mounting the inner inner lens on an inner surface of the housing. The inner inner lens having the same outer diameter as the wide-diameter side of the stepped portion, and a fitting hole that is provided on the wide-diameter side of the stepped portion and has a substantially convex wide portion that contacts the stepped portion. Is provided with a first hook portion that engages with a wide portion of the fitting hole, and a second hook that engages with a narrow portion of the fitting hole in the outer inner lens having the same outer diameter as the inner inner lens. An inner lens mounting structure for a vehicular lamp, wherein a portion is provided, and an edge portion for pressing the inner inner lens to the step portion is provided by engaging the second hook portion.