JP5449949B2 - Lamp device for vehicle - Google Patents

Description

  The present invention relates to a vehicular lamp device including a lamp housing having a lens opening and a lens disposed in the lamp housing so as to cover the lens opening, and more specifically, the lens is fixed to the lamp housing by welding. Related to the structure.

  For example, in a rear lamp device for an automobile, the lens is designed to bend so as to wrap around from the rear end surface of the vehicle body to the outer surface of the vehicle body from the viewpoint of improving the appearance, or the lens is thermally welded to the lamp housing from the viewpoint of reducing the number of parts. May be integrally fixed (see, for example, Patent Document 1). In this case, for example, as shown in FIG. 9, ribs 30 a are formed so as to protrude from the outer peripheral portion of the lens 30, and the rib 30 a is heated and pressed against the lamp housing 32 by the pressing jig 31. The housing 32 is fixed by welding.

  By the way, when the lens 30 is configured to go around the outer surface of the vehicle body, the pressing direction F of the pressing jig 31 is intermediate between the welding directions c and d of the inner rib 30a ′ and the outer rib 30a of the lens 30. It is set to be located at. In this case, since the pressing direction F intersects the welding direction c of the vehicle interior rib 30a ′, there is a possibility that the pressing failure of the lens 30, and consequently the welding failure, may occur. In order to prevent such pressing failure, it is necessary to sufficiently secure the contact surface a of the inner rib 30a ′ of the lens 30 with the pressing jig 31, and the dimension of the flange surface b of the lens 30 is set to be large accordingly. Like to do.

JP 11-191302 A

  However, like the conventional lamp device, when the flange surface of the lens is enlarged, there is a problem that the entire lamp device is increased in size, and the design of various bodies is restricted. For example, when the flange surface dimension b is increased in the rear lamp device, there arises a problem that the back door opening width w is reduced (see FIG. 9). Here, in order to reduce the dimension of the flange surface, it may be possible to press each with a plurality of pressing jigs, but this increases the cost.

  Further, when the rib is formed so as to protrude from the lens, there is a problem that sink marks are likely to occur on the outer surface portion corresponding to the rib of the lens and the appearance is deteriorated.

  The present invention has been made in view of the above-described conventional situation, and an object of the present invention is to provide a vehicular lamp device that can prevent an increase in the size of the entire lamp device and can prevent deterioration in appearance due to the occurrence of sink marks.

The present invention comprises a substantially container-shaped lamp housing having a lens opening, a lamp bulb mounted on the bottom of the lamp housing, and a lens disposed on the lamp housing so as to cover the lens opening,
A lens-side welding rib projecting from the outer periphery of the lens, and a lamp housing-side welding rib projecting from the lamp housing so as to face the lens-side welding rib; A vehicular lamp device in which the welding ribs are welded and fixed in the protruding direction by pressing the lens in a predetermined pressing direction with a pressing jig while heating the lamp housing side welding ribs. The welding direction of the lens side welding rib and the lamp housing side welding rib is set in a direction intersecting the pressing direction, and at least one of the lens side welding ribs of the lens. the outer surface portion corresponding to the section, the recess pressing tool is engaged is formed, the recess, when viewed in the welding direction, at least a portion thereof It is characterized by overlapping the serial lens bonding ribs.

  According to the lamp device of the present invention, since the recess is formed in the outer surface portion of the rib pressed from the direction intersecting the welding direction, the pressing jig enters the recess when pressing the lens against the lamp housing. As a result, the contact surface of the pressing jig can be enlarged and the lens can be prevented from being displaced, whereby the rib can be pressed to the lamp housing with high accuracy and stability. As a result, the contact surface of the lens with the pressing jig can be reduced, the entire lamp device can be reduced in size, and the design restrictions of various bodies can be eliminated.

  Further, since at least a part of the concave portion is formed so as to overlap the rib, it is possible to prevent the occurrence of sink marks caused by forming the rib on the lens, and it is possible to prevent the appearance from deteriorating.

1 is a perspective view of a rear lamp device disposed on a rear body of an automobile according to Embodiment 1 of the present invention. It is a perspective view of the rear lamp device. It is sectional drawing (III-III sectional drawing of FIG. 2) of the said rear lamp apparatus. It is sectional drawing (IV-IV sectional view taken on the line of FIG. 3) of the said rear lamp apparatus. It is sectional drawing (VV sectional view taken on the line of FIG. 3) of the said rear lamp apparatus. It is sectional drawing of the welding part of the said rear lamp apparatus. It is a welding process figure of the said rear lamp apparatus. It is sectional drawing of the rear lamp apparatus by Example 2 of this invention. It is a figure for demonstrating the formation process of this invention.

  Hereinafter, a vehicle lamp device according to a first embodiment of the present invention will be described with reference to the accompanying drawings.

  1 to 7 are diagrams for explaining a lamp device for an automobile according to a first embodiment of the present invention.

  In the figure, reference numeral 1 denotes a rear body of an automobile. The rear body 1 includes left and right quarter panels 2 and 2 in which a rear door opening 2a is formed and upper ends of the left and right quarter panels 2. The roof panel 3 to be connected and the floor panel 4 to connect the lower ends are configured.

  A back door opening 1 a surrounded by the left and right quarter panels 2, the roof panel 3 and the floor panel 4 is formed on the rear end surface of the rear body 1. A back door 5 is disposed in the back door opening 1a (see FIG. 4).

  Left and right rear combination lamp devices 8 and 8 extending in the vertical direction are disposed on the rear end walls 2b and 2b of the left and right quarter panels 2 of the rear vehicle body 1, respectively. The left and right rear combination lamp device 8 has a structure in which a brake lamp, a turn signal lamp, and a backup lamp are integrated.

  The left and right rear combination lamp devices 8 have the same structure, and are mounted on a substantially container-shaped lamp housing 10 having lens openings 10a that open to the rear of the vehicle, and a bottom 10b of the lamp housing 10. Each lamp bulb 11, 12, 13 and a common lens 15 disposed in the lamp housing 10 so as to cover each lens opening 10 a are provided.

  The lamp housing 10 is divided into turn signal lamp chambers A, brake lamp chambers B, and backup lamp chambers C which are formed in a substantially bowl shape in order from the top by the partition walls 10c, and the lamp chambers A to C include the lamps. Valves 11, 12, 13 are arranged.

  A reflector surface 16 is formed on the inner surfaces of the lamp chambers A to C of the lamp housing 10 by aluminum vapor deposition or the like. Light from each of the lamp bulbs 11 to 13 is reflected from the reflector surface 16, passes through the lens 15 from the lens opening 10 a, and is irradiated to the rear of the vehicle.

  A flange portion 10d is formed on the inner side of the lamp housing 10 so as to protrude inward in the vehicle width direction, and a pair of upper and lower bolt holes 10e are formed in the flange portion 10d. The lamp housing 10 is attached to the quarter panel 2 by bolts (not shown) inserted into the bolt holes 10e.

  The lens 15 includes a lens body 15a that covers each lens opening 10a of the lamp housing 10, and a flange portion 15b that is stepped forward and subsequently formed on the inner edge of the lens body 15a. The flange portion 15b is covered by the back door 5, and is hidden from view when the back door 5 is closed.

  The lens 15 is colored in a color corresponding to the brake lamp, turn signal lamp, and backup lamp.

  The lens body 15a is curved so as to go around from the rear end wall 2b of the quarter panel 2 to the outer wall 2c. The outer wrap portion 15a ′ of the lens body 15a is formed so as to form a continuous surface on the outer wall 2c (see FIG. 4).

On the outer peripheral portion of the lens 15, a welding rib 15c extending over the entire periphery thereof is formed so as to protrude forward of the vehicle. A vehicle inner rib (lens side welding rib) 15c ′ formed on the flange portion 15b of the rib 15c is formed to protrude forward of the vehicle, and a vehicle outer rib 15c ″ formed on the outer wrap portion 15a ′ is formed. It is formed so as to be inclined obliquely inward. As a result, the inner rib 15c 'is pressed from a direction c that intersects the welding direction c to the lamp housing 10 by the pressing jig 21 described later, that is, the rib protruding direction.

A welding rib (lamp housing side welding rib) 10f is formed to protrude rearward at a portion of the outer peripheral portion of the lamp housing 10 that faces the welding rib 15.

  The lens 15 is integrally fixed to the lamp housing 10 by heat-welding the rib 15c to the welding rib 10f of the lamp housing 10. Thereby, the bolt, clip, etc. for attaching the lens 15 to the lamp housing 10 are unnecessary.

  Specifically, as shown in FIGS. 5 to 7, the iron plate 20 heated to a predetermined temperature is inserted between the ribs 10 f and 15 c to melt the tips of the ribs 10 f and 15 c, and the aforementioned pressing jig is used. By pressing the entire lens 15 against the lamp housing 10 by 21, the ribs 10 f and 15 c are welded together. As the welding method, vibration welding or ultrasonic welding may be employed in addition to hot plate welding.

  A concave portion 15d with which the pressing jig 21 is engaged is formed on the outer surface portion of the flange portion 15b of the lens 15 corresponding to the inboard rib 15c ′. The concave portion 15d has a U-shaped cross section, and is formed over substantially the entire length of the flange portion 15b in the vertical direction.

  The concave portion 15d is formed so that a part thereof overlaps the vehicle interior rib 15c ′ when viewed in the welding direction c, that is, the rib protruding direction. Specifically, the outer end of the recess 15d is overlapped with the rib 15c '.

  The pressing jig 21 is formed with a convex portion 21a that enters the concave portion 15d. As a result, the convex portion 21a engages with the concave portion 15d when the lens is pressed, thereby preventing the lens 15 from shifting in the vehicle width direction.

  According to the present embodiment, since the concave portion 15d is formed in the outer surface portion corresponding to the vehicle inner rib 15c ′ of the lens 15, the convex portion 21a of the pressing jig 21 is formed into the concave portion 15d when the lens 15 is pressed against the lamp housing 10. By entering, the contact surface of the pressing jig 21 can be enlarged, and the lens 15 can be prevented from shifting. Accordingly, the rib 15c ′ can be pressed accurately and stably against the welding rib 10f of the lamp housing 10. As a result, the projecting dimension b ′ of the flange portion 15b of the lens 10 can be made significantly smaller than the conventional flange surface dimension b, and the entire lamp device can be made smaller, and consequently the vehicle width dimension w of the back door opening 1a. ′ Can be increased. This is particularly effective when the lens body 15a is designed to be curved so as to wrap around the outer wall 2c of the quarter panel 2.

  Further, in this embodiment, since a part of the recess 15d is formed so as to overlap the rib 15c ′ when viewed in the rib protruding direction, the occurrence of sink marks caused by forming the rib 15c on the lens 10 is prevented. Can be prevented, and deterioration of appearance can be prevented.

  In addition, although the said Example demonstrated the case where the said recessed part 15d was formed in the flange part 15b inside a vehicle, since the recessed part of this invention is for preventing the shift | offset | difference of the lens 15, it is a vehicle outside rib. You may form also in the outer surface of 15c ''.

  Moreover, in the said Example, although the flange part 15b in which the said recessed part 15d was formed was covered with the back door 5, you may form so that it may be exposed to the surface of the lens 15 by this invention. In this case, the design effect of the entire rear combination lamp can be enhanced.

  In the above-described embodiment, the rear lamp device of the automobile has been described as an example. However, the present invention can also be applied to a headlamp device disposed on the front side of the automobile.

  In the embodiment, the concave portion 15d of the lens 15 has a U-shaped cross section, but the concave portion of the present invention is not limited to this.

  FIG. 8 is a view for explaining a rear lamp device according to a second embodiment of the present invention, in which the same reference numerals as those in FIG. 6 denote the same or corresponding parts.

  In this embodiment, the concave portion 15d ′ of the lens 15 has a triangular cross section, and the convex portion 21a ′ of the pressing jig 21 has a triangular shape that engages with the concave portion 15c ′. Even in this case, the same effect as in the first embodiment can be obtained.

8 Rear Combination Lamp Device 10 Lamp Housing 10a Lens Opening 10b Bottom 11 to 13 Lamp Bulb 15 Lens 15c Welding Rib 15c ′ Car Interior Rib (Some Ribs)
15d, 15d 'recess 21 pressing jig c welding direction F pressing direction

Claims (1)

A substantially container-shaped lamp housing having a lens opening, a lamp bulb mounted on the bottom of the lamp housing, and a lens disposed on the lamp housing so as to cover the lens opening;
Forming a lens-side welding rib on the outer periphery of the lens, and forming a lamp housing-side welding rib on the lamp housing so as to face the lens-side welding rib;
The two welding ribs are welded and fixed in the protruding direction by pressing the lens in a predetermined pressing direction with a pressing jig while heating the lens side welding rib and the lamp housing side welding rib. A vehicular lamp device,
The welding direction of the lens side welding rib and the lamp housing side welding rib is set in a direction intersecting the pressing direction,
The outer surface portion of the lens corresponding to at least a part of the lens-side welding rib is formed with a recess that engages with the pressing jig,
The vehicular lamp device, wherein when viewed in the welding direction, at least a part of the concave portion overlaps the lens side welding rib .

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