JP2000135948A - Interior lighting fixture for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent mischief by forming a closing cover to close a fitting through-hole without a clearance between a curved recessed part and the cover and step difference between a case and the cover when engaged by an engaging means. SOLUTION: A spherical recessed part 42 is formed at a case 1, and the bottom part of the spherical recessed part 42 is provided with a fitting through- hole 4. A closing cover 7 is provided with a protruding spherical surface 70 coinciding with the recessed spherical surface 43 of the spherical recessed part 42. As a result, a dimensional error, a manufacturing error, and the like can be absorbed by the coincidence between the recessed spherical surface 43 of the spherical recessed part 42 of the case 1 and the protruding spherical surface 70 of the closing cover 7, so that a clearance between the spherical recessed part 42 of the case 1 and the closing cover 7 can be minimized, and step difference between the case 1 and the closing cover 7 can be eliminated. After fitted to a vehicle body, the closing cover 7 cannot therefore be easily detached, that is, mischief can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle interior lamp, for example, a vehicle interior lamp such as a room lamp or a map lamp, wherein a mounting hole for a control switch is closed by a cover. More particularly, the present invention relates to a vehicle interior lighting device in which a cover can not be easily removed once it is attached to a vehicle body.

[0002]

2. Description of the Related Art A vehicle interior lamp of this type will be described below with reference to FIGS. In the figure, reference numeral 1 denotes a case in which the inside is hollow. On the front surface (room side) of the case 1, a room lamp 2 and a switch 20 for turning on and off the room lamp 2 and a map lamp 3 and a switch 30 for turning on and off the map lamp 3 are provided. In addition, the case 1 is provided with a mounting through hole 4 for a control switch of an optional device (or a genuine device). This mounting through hole 4 is
Is provided at the bottom of the concave portion 40 formed at the bottom. The concave portion 40 is formed of a vertical surface and a horizontal surface, and has a substantially rectangular shape that is horizontally long when viewed from the front. The above-described control switch is, for example, a switch that opens and closes a sunroof (a window that is openably and closably provided on a ceiling defining a vehicle compartment).

In FIG. 1, reference numeral 5 denotes a closing cover for closing the mounting through hole 4. The closing cover 5 has a rectangular flat plate shape slightly smaller than the concave portion 40 and slightly larger than the mounting through hole 4. This closing cover 5
Inside (inside the vehicle interior lamp), an elastic engaging claw 6 having a lance shape of the engaging means is integrally provided.
On the other hand, inside the edge of the mounting through hole 4 of the case 1, an engaging projection 60 of the engaging means is provided integrally. The closing cover 5 is attached to the concave portion 40 of the case 1 by elastically engaging the elastic engaging claw 6 inside the closing cover 5 with the engaging projection 60 inside the edge of the mounting through hole 4. ,
The mounting hole 4 of the case 1 is closed by the closing cover 5.

[0004] When an optional device (or a genuine device) is mounted on the vehicle, the elastic engagement claws of the closing cover 5 are provided inside the vehicle interior lamp before the vehicle interior lamp is mounted on the vehicle body. The elastic engagement between the engaging protrusion 6 and the engaging protrusion 60 of the mounting through hole 4 is released, the closing cover 5 is removed from the mounting through hole 4, and the mounting through hole 4 is opened. A control switch (not shown) is attached to the opening 4. Then, the vehicle interior lamp to which the control switch is attached is attached to the vehicle body. On the other hand, when the optional device (or the genuine device) is not installed in the automobile, the vehicle interior lamp (the vehicle interior lamp shown in FIG. 3) in which the mounting through hole 4 of the case 1 is closed by the closing cover 5 is used as it is. Attach to the body.

[0005]

However, in the above-described vehicle interior lamp, since the recess 40 is formed of a vertical plane and a horizontal plane, while the cover 5 is formed of a flat plate, dimensional errors and manufacturing errors may occur. As shown in FIG. 4, a gap C is formed between the vertical surface of the concave portion 40 and the end surface of the closing cover 5, and a step (particularly, closing) is formed between the outer surface of the case 1 and the outer surface of the closing cover 5. A step (D) in which the outer surface of the cover 5 protrudes outside the outer surface of the case 1 may occur. When the above-mentioned gap C or step D occurs, a tool such as a flathead screwdriver can be inserted or hooked into the gap C or step D. There is a problem that the cover 5 can be easily removed.

It is an object of the present invention to provide a vehicular interior lamp in which a cover can not be easily removed once it is attached to a vehicle body.

[0007]

According to the present invention, in order to achieve the above-mentioned object, a curved concave portion is formed in a case, and a mounting through hole is provided at a bottom portion of the curved concave portion. The closing cover is provided with a convex curved surface that matches the concave curved surface of the curved concave portion.

As a result, the vehicle interior lighting device of the present invention can absorb dimensional errors and manufacturing errors by matching the concave curved surface of the curved concave portion of the case with the convex curved surface of the closing cover. The gap between the cover and the cover can be made as small as possible, and the step between the case and the closing cover can be eliminated. For this reason, after being once attached to the vehicle body, the closing cover cannot be easily removed from the case.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicle interior lamp according to the present invention will be described below with reference to FIGS. FIG.
FIG. 1 is a partial cross-sectional view (a cross-sectional view corresponding to FIG. 4 of the above-described conventional vehicle interior lamp) of a main part showing an embodiment of a vehicle interior lamp of the present invention. In the drawing, the same reference numerals as those in FIGS. 3 and 4 denote the same components.

The case 1 is provided with a spherical recess 42 in this example via a standing wall 41. This spherical recess 4
At the bottom of 2, a mounting through hole 4 is provided. On the other hand, inside the edge of the closing cover 7, in this example, a spherical concave portion 42 is provided.
A convex spherical surface 70 that matches the concave spherical surface 43 (outside the edge of the mounting through hole 4) is provided.

Since the vehicle interior lamp of the present invention in this embodiment has the above-described configuration, as shown in FIG. 1, the closing cover 7 is attached to the engagement projection 60 inside the edge of the mounting through hole 4. By elastically engaging the inner elastic engaging claw 6,
The closing cover 7 is attached to the spherical concave portion 42 of the case 1, and the closing cover 7
Is closed. At this time, the spherical concave portion 42 of the case 1 forms a spherical surface via the vertical wall 41, while the closing cover 7 has a spherical concave and convex section, so the concave spherical surface 43 of the spherical concave portion 42 of the case 1 and the convex spherical surface of the closing cover 7. By matching with 70, dimensional errors and manufacturing errors can be absorbed. That is, the spherical center of the concave spherical surface 43 of the spherical concave portion 42 and the convex spherical surface 70 of the closing cover 7
The center of the spherical surface of the case 1 can be easily adjusted with high precision (centering).
1 and the gap between the end surface of the closing cover 7 and the step between the outer surface of the case 1 and the outer surface of the closing cover 7 (particularly, the outer surface of the closing cover 7 is Or a step that protrudes from the front end) can be eliminated. For this reason, since a tool such as a flathead screwdriver cannot be inserted or hooked into the above-mentioned gap or step, after the vehicle room or the like of the present invention is once attached to the vehicle body, the vehicle room light from outside the vehicle interior lighting device. The closing cover 7 that does not need to be removed cannot be easily removed.

FIG. 2 is a partial sectional view of a main part showing a modification of the vehicle interior lamp of the present invention. In the figure, FIG.
3 and 4 denote the same components. This modification is an example in which the standing wall 41 is not provided in the spherical concave portion 42. This modified example can achieve the same operation and effect as those of the above-described embodiment.

In particular, in this embodiment and the modification, since the concave portion 42 and the closing cover 78 are spherical, centering can be performed without using centering means.

The above-mentioned spherical concave portion 42 and concave spherical surface 43 are used.
May be provided outside the edge of the mounting through hole 4 of the case 1. Further, the above-mentioned concave spherical surface 43 of the spherical concave portion 42 and the convex spherical surface 70 of the closing cover 7 may be provided at least at portions where they contact each other.

In the above-described embodiment, the concave portion 42 and the closing cover 78 form a spherical surface. However, the vehicle interior lighting device of the present invention is not limited to the spherical surface, but may have a single-axis cylindrical surface or a single-axis surface. May be curved surfaces such as curved surfaces where the cylindrical surfaces intersect. Further, the room lamp 2 and its switch 20 of the vehicle interior lamp, the map lamp 3 and its switch 3
The shapes, mounting positions, and the like of 0, the mounting through hole 4 and the closing cover 7 are not limited to those shown in FIG. further,
The case 1 may be used as a cover, and the closing cover 7 may be used as a cap.

[0016]

As is apparent from the above description, the vehicle interior lamp of the present invention can absorb dimensional errors and manufacturing errors by matching the concave curved surface of the curved concave portion of the case with the convex curved surface of the closing cover. The gap between the curved concave portion of the case and the closing cover can be made as small as possible, and the step between the case and the closing cover can be eliminated. For this reason, after being once attached to the vehicle body, the closing cover cannot be easily removed from the case.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a main part showing one embodiment of a vehicle interior lamp of the present invention.

FIG. 2 is a partial cross-sectional view of a main part showing a modification.

FIG. 3 is a front view of a conventional vehicle interior lamp.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... case, 4 ... mounting through-hole, 41 ... standing wall, 42 ... spherical concave part (curved concave part), 43 ... concave spherical surface (concave curved surface), 7 ... closed cover, 70 ... convex spherical surface (convex curved surface).

Claims (1)

[Claims] 1. A case provided with a mounting hole for a control switch, and a closing cover which is engaged by an engagement means inside an edge of the mounting hole and closes the mounting hole. In the vehicle interior lighting device, a curved concave portion is formed in the case, the mounting through hole is provided in a bottom portion of the curved concave portion, and a projection matching the concave curved surface of the curved concave portion is provided in the closing cover. A curved surface is provided, and when the closing cover is engaged by the engaging means, there is no gap between the curved concave portion and a step between the case and the closing cover closes the mounting through hole. And a vehicle interior lamp.