JP3165624B2 - Vehicle lighting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp body fixing hook for projecting rearward from a rear wall of a synthetic resin lamp body and engaging with an engaging recess on the vehicle body side to prevent the lamp body from coming off. The present invention relates to a vehicular lamp integrally formed with a vehicular lamp.

[0002]

2. Description of the Related Art FIG. 9 shows a prior art of a lamp of this type. A lamp 3 is provided in a lamp body 1 having a reflector 2 integrally formed on an inner peripheral surface thereof. The lens 4 is attached to the front opening of the lamp to constitute a lamp. The lamp body 1 is formed of a synthetic resin. A bracket 5 for attaching and fixing a lamp to a vehicle body is protruded from an upper end portion of the lamp body 1, and a lamp is provided on a rear wall of the lamp body 1. A hook 6 integrally formed with the body 1 is protrudingly provided.
Is hooked into the engaging hole 8 on the vehicle body 7 side, and the bracket 5 is fixed to the vehicle body 7 with the fastening screw 8 so that the lamp can be attached and fixed to the vehicle body 7.

[0003]

However, in order to mold the lamp body 1 described above, an undercut 9 is formed between the hook 6 and the lamp body 1 as shown in FIG. A lower mold a having a molding surface for molding the inside, an upper mold b having a molding surface for molding the outside of the lamp body 1, and a slide mold c for molding the vicinity of the hook serving as the undercut portion 9 are provided. It was necessary to mold using a complicated mold structure. Sign P. L. Indicates a mold separation surface. When the molded product is solidified after the mold is clamped, first, the slide mold c is separated in the direction of arrow A in FIG.
Are separated from each other in the direction in which they are separated from each other (directions shown in FIGS. 10B and 10C), so that the lamp body 1 as a molded product can be released from the mold.

As described above, conventionally, the mold for molding the lamp body is complicated and large, so that the cost is increased and the molding process is time-consuming. Therefore, the cost of the manufactured lamp body is increased accordingly. was there. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the related art, and has as its object to form a lamp that can be molded by a simple molding device including a pair of molds that can only perform approaching and separating operations without having a divided mold structure. An object of the present invention is to provide a vehicular lamp having a body.

[0005]

In order to achieve the above object, a vehicular lamp according to claim 1 has a container-like synthetic resin lamp body provided with a light source and a reflector for reflecting the light of the light source forward. A vehicular lamp provided with a lamp mounting / fixing hook integrally formed with the lamp body, protruding rearward of the lamp body, and engaging with an engaging recess on the vehicle body side to prevent the lamp from coming off. An opening is formed in a predetermined region of the lamp body rear wall facing an undercut formed between the hook and the lamp body rear wall when molding the body, and a cap for closing the opening is attached to the opening. It is like that. According to a second aspect, in the vehicle lighting device according to the first aspect, a parabolic reflector is integrally formed on an inner peripheral surface of the lamp body and an inner peripheral surface of the cap, respectively. The cap is formed in a shape that matches the opening, and the cap is attached and held in the opening by engaging the easily attachable / detachable concave / convex elastic engaging part provided between the back side of the cap and the peripheral part of the opening. The two reflectors form one continuous paraboloid.

[0006]

According to the first aspect of the present invention, an opening is provided in a predetermined region of the rear wall of the lamp body facing the hook serving as the undercut portion, so that the undercut portion in molding the lamp body disappears. That is, a mold having a molding surface for molding the inside of the lamp body is provided with a molding surface for molding an opening formed in a rear wall of the lamp body and a vicinity of a hook which is a conventional undercut portion. Thus, the lamp body having the hooks formed so as to protrude can be formed by the pair of dies that approach and separate from each other. According to the second aspect, the parabolic elastic engagement portion is elastically engaged, so that the cap can be attached to the opening to form one continuous parabolic reflector inside the lamp body.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 8 show an embodiment of the present invention. FIG. 1 is a front view of a rear combination lamp in which a turn signal lamp, a backup lamp, a tail & stop lamp, and a reflex reflector are integrated, and FIG. 3 is a rear view of the lamp, FIG. 3 is a longitudinal sectional view of the lamp (a sectional view taken along line III-III shown in FIG. 1), and FIG. 4 is a horizontal sectional view of the lamp at a hook forming position (FIGS. 1 and 5). 5 is a longitudinal sectional view of the lamp at a hook forming position (a line V-IV shown in FIG. 1).
FIG. 6 is a perspective view of an opening formed in the lamp body and a cap for closing the opening.
FIG. 7 is an explanatory view for explaining the characteristics of the shape of the standing wall formed on the rear wall of the lamp body, and FIG. 8 is a sectional view of a main part of a mold for molding the lamp body.

In these figures, reference numeral 10 denotes a vertically long container-shaped lamp body of a rear combination lamp, and the interior of the lamp body 10 is arranged in order from the top by a partition wall 12 extending horizontally, and a lamp chamber space A,
The inner peripheral surface of the lamp body 10 which is defined in the lamp room space B of the backup lamp and the lamp room space C of the tail & stop lamp and forms the lamp room spaces A to C has a parabolic surface coated with silver. A reflector 14 (14A to 14C) having a shape is formed, and a bulb insertion hole 15 (15A to 15C) formed at the rear top of the lamp body of each lamp is formed in each of the lamp chambers A to C. The inserted valve 16 (1
6A to 16C) are arranged. A continuous seal groove 17 is formed at the periphery of the front opening of the lamp body 10 and at the front end of the partition wall 12 that defines the lamp chamber space.
The seal leg 22 of the front lens 20 is engaged with the seal groove 17 to be integrated as a lamp. Reference numeral 18
Is a sealant loaded in the seal groove 17, and reference numeral 19
Is a fixing screw for fixing the seal leg 22 and the seal groove 17.

The front lens 20 has an amber lens 20A for a turn signal lamp, a white lens 20B for a backup lamp, and a red reflex reflector 20D assembled on the front in order from the top.
It is composed of a red lens 20C for a stop lamp, and a sealing leg 22 of each of the lenses 20A to 20C.
Are engaged with the seal groove 17, and the vertically adjacent side edges of each lens are engaged with each other to be integrated as the front lens 20.

At the upper end and the lower side of the lamp body 10, a bracket 3 integrally formed with the lamp body 10 is provided.
The brackets 30 and 32 are fixed to the vehicle body 80 by fastening screws 34 so that the lamps are fixed to the vehicle body 80. Code 3
Reference numerals 1 and 33 denote holes for inserting fastening screws formed in the brackets 30 and 32, and reference numeral 35 denotes a fastener for screwing screws. The fastening screw 34 inserted into the holes 31 and 33 of the brackets 30 and 32 is connected to the vehicle body 80. The brackets 30 and 32 can be fastened to the vehicle body 80 by being screwed to the fastener 35 fitted in the holes 81 and 82.

A lamp body 1 defining a lamp room space C
A hook 40 with a hook portion 41 directed downward is formed on the rear wall of the main body 0 so that the hook hook portion 41 is engaged with an engagement hole 84 on the vehicle body 80 side to prevent the hook portion 41 from coming off. so,
The lamp is positioned and fixed to the vehicle body 80. In other words, a standing wall 43 for positioning the lamp and reinforcing the hook 40 is provided behind the hook base 42 (upper in FIG. 5).
The hook hook 41 is formed integrally with the engaging hole 8.
4 and the end surface 43a of the standing wall 43 abuts the front surface 84b of the upper peripheral portion of the engaging hole 84, so that the hook 40 is positioned in the front-rear direction. Therefore, the weight of the lamp is carried by the two fastening portions with the vehicle body 80 by the fastening screws 34 and the engaging portion between the hook 40 and the engaging hole 84, and is fixed in position. Reference numeral 43b denotes a rib extending in the front-rear direction formed horizontally on the left and right sides of the standing wall 43 to reinforce the standing wall 43, and reference numeral 41a denotes a left and right side of the hook base 41 to reinforce the hook 40. The ribs are formed and extend in the front-rear direction.

Reference numeral 11 in FIGS. 2, 3, 4, and 6 denotes a standing wall protruding from the rear wall of the lamp body 10.
The lamp is extended so as to surround the entire three bulb insertion holes 15 (15A, 15B, 15C).
When fixed to the lamp, the packing 88 is interposed between the standing wall 11 and the vehicle body 80 to prevent water from entering from the front side of the lamp to the rear side of the lamp. The packing 88 is attached to the inside of the vehicle body 80 with a double-sided tape.

The tip surface 11a of the upright wall 11 is particularly shown in FIG.
As shown in FIG. 5, the packing 88 is formed on a plane parallel to the direction in which the vehicle body 80 extends, so that the packing 88 sandwiched between the upright wall end surface 11a and the vehicle body 80 is not easily broken. That is, as shown in an enlarged manner in FIG.
Is formed on a surface orthogonal to the extending direction of the standing wall 11, the right-angled corner portion 11 b at the tip of the standing wall of the packing 88.
Stress concentrates on a portion pressed against the rectangular corner portion, and the portion pressed against the right-angled corner portion 11b is easily broken by vibration or the like. However, in this embodiment, the vertical wall tip surface 11a
Is formed on a surface parallel to the extending direction of the vehicle body 80, the compressive stress acting on the packing 88 side from the vertical wall front end surface 11a does not concentrate on a part as shown in FIG. It can be said that the packing 88 is hard to be broken by that much, because it is dispersed over the entire area that is pressed against the surface 11a.

A rectangular opening 50 for eliminating an undercut during molding of the lamp body 10 is provided in a region facing the hook hook 41 on the rear wall of the lamp body 10 defining the lamp chamber space C. At the same time, a rectangular cap 70 for closing the opening 50 is attached to the opening 50, and is integrated with the lamp body 10.

That is, as shown in FIG. 10, when a lamp body is formed by using a pair of molds which move close to and away from each other, a hook hook and a lamp body rear wall on which the hook protrudes are formed. Since the undercut portion 9 is formed between the two, the area to be the undercut portion 9 has conventionally been required to be formed using the slide mold c. However, in the present embodiment, the opening 50 is formed in a region facing the hook hook portion 41 on the rear wall of the lamp body, and a region serving as an undercut portion is formed on one side of a pair of molds that move toward and away from each other. Therefore, the lamp body can be molded by a simple mold having no undercut portion at the time of molding and having no slide mold.

More specifically, FIG. 8 shows a cross section of a main part of a mold for molding the lamp body 10, and reference numeral 61 denotes a molding surface 62 for molding the outside of the lamp body 10. The upper mold with reference numeral 63 is
A lower mold having a molding surface 64 for molding the inside of the lamp body 10 has a structure in which a pair of molds 61 and 63 can move close to and away from each other in the vertical direction. The upper mold 61 has a molding surface 65 for molding a region from the hook 41 of the hook 40 to the standing wall 43, while the lower mold 63 has an opening 50 and a hook of the hook 40. A molding surface 66 for molding a region from 41 to the base of the base 42 is formed, and a region corresponding to an undercut portion, which had conventionally been required to be molded by using a split mold, uses a split mold. Instead, molding can be performed using the molding surface 66 formed on the lower mold 63.

Reference numerals 52 and 53 shown in FIG.
An L-shaped cross-section cap receiver formed along the periphery of the opening 50 at the left and right positions.
The extension tip portions 52a and 53a of the two and 53 extend to positions slightly protruding into the opening 50. In addition, a part of the standing wall 11 provided around the rear wall of the lamp body 10 includes:
The opening 50 extends so as to intersect with the opening 50.
The recess 54 (see FIG. 4) in which the standing wall 11 extending upward is formed and the cap receivers 52 and 53 come into contact with the peripheral edge of the cap 70 mounted in the opening 50, and
There is a function of holding 0 in the opening 50. Code 55, 5
5 is a pair of projections for positioning the cap 70 protruding from the lower edge of the opening 50.

On the other hand, the cap 70 has a rectangular cap body 71 that can be engaged with the opening 50, a pair of hooks 72, 73 protrudingly formed on the upper rear side of the cap body 71, and a cap body 71. And a plate-shaped locking portion 74 protruding from the lower portion of the cap body 71. The peripheral portion of the cap body 71 contacts the cap receivers 52 and 53 and the concave portion 54 functioning as the cap receiving portion. Engages with the opening peripheral edge 50a between the projections 55, 55, and the hooks 72, 73 elastically engage with the extending distal ends 52a, 53a of the cap receivers 52, 53, so that the cap 70 can be moved in the front-rear, left-right direction. And is fixedly held in a state where the opening 50 is closed. On the front side of the cap 70, the reflector 14C ₂ subjected to the silver coating is formed, the cap 70 is integrated with the lamp body 10 is mounted in the opening 50, the lamp body 10 reflector 14C ₁ And reflector 70 of cap 70
4C ₂ are flush with each other to form a parabolic reflector 14C continuously.

[0019]

As is apparent from the above description, according to the vehicular lamp of the present invention, the lamp body is formed by forming an opening in a predetermined region of the rear wall of the lamp body facing the undercut portion. Of the undercut disappears,
Since the lamp body having the hooks protruded can be molded by the molding device including the pair of molds capable of only the approaching / separating operation without the slide mold, the mold structure can be simplified and the cost can be reduced. Furthermore, since the manufacturing equipment for the lamp body can be reduced in size and the manufacture of the lamp body is facilitated, the lamp body can be provided at a low cost. According to the second aspect, the cap can be attached to the opening with one touch, so that the headlamp is easy to assemble.

[Brief description of the drawings]

FIG. 1 is a front view of a rear combination lamp according to an embodiment of the present invention.

FIG. 2 is a rear view of the lamp.

FIG. 3 is a longitudinal sectional view of the lamp (a line III-III shown in FIG. 1).
Sectional view along

FIG. 4 is a horizontal sectional view of the lamp at a hook forming position (a sectional view taken along line IV-IV shown in FIG. 1);

5 is a vertical sectional view of the lamp at a hook forming position (a sectional view taken along line VV shown in FIG. 1).

FIG. 6 is a perspective view of an opening formed in the lamp body and a cap for closing the opening.

FIG. 7 is an explanatory diagram for explaining characteristics of a shape of a front end surface of a standing wall formed on a rear wall of the lamp body.

FIG. 8 is a sectional view of a main part of a mold for molding a lamp body.

FIG. 9 is a longitudinal sectional view of a conventional lamp.

FIG. 10 is a sectional view of a mold for molding a lamp body which is a conventional lamp component.

[Explanation of symbols]

10 lamp body 14C _1, 14C ₂ hooks a reflector 16 (16C) uneven elastic engagement portion of the peripheral edge side of the receiving portion 70 caps 72 and 73 the cap side of the valve 40 hook 50 opening 52 opening is a light source 74 Locking portion which is a concave-convex elastic engaging portion on the cap side

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F21S 8/10 B60Q 1/26 B60Q 1/44 F21W 101: 14

Claims (2)

(57) [Claims] 1. A container-shaped synthetic resin lamp body provided with a light source and a reflector for reflecting the light of the light source forward is integrally formed with the lamp body and protrudes rearward of the lamp body, and is provided on a vehicle body side. In a vehicle lamp provided with a lamp mounting / fixing hook which is engaged with a joint recess and is prevented from falling off, a lamp facing an undercut portion formed between a hook and a lamp body rear wall when molding the lamp body. An opening is formed in a predetermined region of a body rear wall, and a cap for closing the opening is attached to the opening. 2. A parabolic reflector is integrally formed on an inner peripheral surface of the lamp body and an inner peripheral surface of the cap, and the cap is formed in a shape matching the opening. The cap is attached and held in the opening by engaging the easily attachable / detachable concave / convex elastic engaging portion provided between the back side of the cap and the peripheral edge of the opening, and the two reflectors are connected to one continuous release. The vehicular lamp according to claim 1, wherein the vehicular lamp forms an object surface.