JP2007103128A - Vehicular lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular lamp improved in sealing performance in mounting a leg part of a lens to a groove part of a housing. <P>SOLUTION: This vehicular lamp 1 comprises the housing 3 supporting a light source nearly at the center thereof and having the groove part 4 formed around it, and the lens 7 covering the whole of an opening of the housing 3, inserted into the groove part 4 and covering a lamp chamber by supporting the leg part 8 by a sealing material 6 filled in the groove part 4; and is so structured that the groove part 4 comprises an inner wall 10 arranged inside the lens 7, an outer wall 11 arranged outside the lens 7 and a bottom part 12 of the inner wall 10 and the outer wall 11; and a positioning part 13 capable of holding the inside surface of the leg part 8 of the lens 7 is formed in the groove part 4. The positioning part 13 is formed toward the outside on the inner wall 10 above the bottom part 12 of the groove part 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lamp for a vehicle such as an automobile, a vehicle, a ship, and an aircraft.

In general, a vehicular lamp includes a housing that supports a light source substantially in the center and has a groove formed around it, and a leg portion that covers the entire opening of the housing, is inserted into the groove, and is filled in the groove. And at least a lens that covers the lamp chamber, and a positioning portion that can hold the inner surface of the leg portion of the lens is formed in the groove portion (see, for example, Patent Document 1). .
Japanese Utility Model Publication No. 58-148805

  However, in such a conventional technique, when the lens leg is assembled to the groove of the housing by the sealing material previously filled in the housing groove, the lens leg is rubbed by the positioning portion, thereby Since the material is peeled off, the sealing effect may be reduced, and improvement is demanded.

  The present invention has been made paying attention to such a conventional technique, and provides a vehicle lamp having improved sealing performance when a leg portion of a lens is assembled to a groove portion of a housing.

  The invention according to claim 1 is a housing in which a light source is supported substantially at the center and a groove is formed around the light source, and a sealing material that covers the entire opening of the housing, is inserted into the groove, and fills the groove And at least a lens that covers the lamp chamber by supporting the leg, and the groove includes an inner wall disposed inside the lens, an outer wall disposed outside the lens, an inner wall, and an outer bottom portion. The groove portion is formed with a positioning portion that can hold the inner surface of the leg portion of the lens, and the positioning portion is formed outwardly on the inner wall above the bottom portion of the groove portion. It is characterized in that a positioning part is formed toward the surface.

  A second aspect of the present invention is the vehicle lamp according to the first aspect, wherein the support portion protruding outside the lens is engaged with the free end portion of the outer wall, and the leg portion of the lens. A space portion in which the sealing material can be interposed is formed between the free end portion and the bottom portion.

  A third aspect of the present invention is the vehicle lamp according to the first aspect, wherein the support portion protruding outside the lens has a locking hole formed in the outer wall at a position facing the positioning portion of the inner wall. A space portion in which the sealing material can be interposed is formed between a free end portion and a bottom portion of the leg portion of the lens in a state where the lens member is engaged with the lens portion.

  According to the first aspect of the present invention, since the positioning portion is formed outwardly on the inner wall above the bottom portion of the groove portion, the positioning portion prevents the sealing material from filling the groove portion. Therefore, the sealing performance when the leg portion of the lens is assembled to the groove portion of the housing can be remarkably improved. By forming the positioning portion outward from the inner wall, undercutting is not achieved, and the cost of the mold can be reduced.

  According to a second aspect of the present invention, the support portion protruding outward of the lens is engaged with the free end portion of the outer wall between the free end portion and the bottom portion of the leg portion of the lens. Since the space where the sealing material can be interposed is formed, the sealing material can be interposed using the space formed at the bottom of the groove, so when the lens leg is assembled to the groove of the housing It is possible to remarkably improve the sealing performance.

  According to the third aspect of the present invention, the support portion protruding outward of the lens is engaged with a locking hole formed in the outer wall at a position opposite to the positioning portion of the inner wall, and the leg portion of the lens. Since the space portion in which the sealing material can be interposed is formed between the free end portion and the bottom portion of the lens, the sealing material can be interposed using the space portion formed in the bottom portion of the groove portion. The sealing performance when the leg portion is assembled to the groove portion of the housing can be remarkably improved. When the support portion and the locking hole are locked, a support strength higher than the support strength of the lens by the sealing material can be obtained.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle lamp that has improved sealing performance when a lens leg is assembled to a groove of the housing, and a housing that supports a light source and has a groove formed around the light source, and the housing A vehicle lamp that includes at least a lens that covers a lamp chamber by supporting a leg portion with a sealant that is inserted into the groove portion and is filled in the groove portion. Is realized by forming a positioning portion outwardly on the inner wall above the bottom of the groove. Embodiments of the present invention will be described below with reference to the drawings.

  1 to 3 are views showing a first embodiment of the present invention. A vehicular lamp 1 according to this embodiment includes a housing 3 that supports a light source 2 substantially at the center and has a groove 4 formed in the periphery thereof, covers the entire opening 5 of the housing 3, and is inserted into the groove 4. The leg portion 8 is sealed with a sealing material 6 such as hot melt filled in the groove portion 4 and the lens 7 covers the lamp chamber 9. With regard to the configuration, “at least” means that equipment necessary for satisfying the required function as the lamp 1 such as a shade and a reflector is provided. However, in the present invention, it is not necessary to explain such a configuration. Omitted and used such an expression.

  The groove portion 4 is formed in a rectangular cross section by an inner wall 10 disposed on the inner side of the lens 7, that is, on the lamp chamber 9 side, an outer wall 11 disposed on the outer side of the lens 7, and a bottom portion 12 of the inner wall 10 and the outer side 11. It becomes.

  A positioning portion 13 is formed on the inner wall 10 of the groove portion 4 so as to hold the inner surface 8a of the leg portion 8 of the lens 7. The positioning portion 13 is located above the bottom portion 12 of the groove portion 4 (FIG. 1 to FIG. 1). 3 is the inner wall of the upper side, that is, the position away from the bottom 12 and also the opening 5 side, and the outer wall (the left side in FIGS. 2 and 3). ) In the shape of a mountain (cross-sectional hemisphere). The outer wall 11 disposed on the outer side of the positioning portion 13 is formed with a locking hole 17 that becomes a trace of sliding the mold 16 shown in FIG.

  The support portion 14 that protrudes to the outside of the lens 7 is engaged with the free end portion 11a of the outer wall 11 between the free end portion 8b and the bottom portion 12 of the leg portion 8 of the lens 7. A space portion 15 in which the material 6 can be interposed is formed.

  According to this embodiment, since the positioning portion 13 is formed outwardly on the inner wall 10 above the bottom portion 12 of the groove portion 4, the sealing material 6 is filled in the groove portion 4 by the positioning portion 13. Therefore, the sealing can be significantly improved when the leg portion 8 of the lens 7 is assembled to the groove portion 4 of the housing 3. Since the positioning portion 13 is formed outward from the inner wall 10, undercutting is not achieved, and the cost of the mold 16 can be reduced.

  Further, the support portion 14 that protrudes to the outside of the lens 7 is locked between the free end portion 8b of the leg portion 8 of the lens 7 and the bottom portion 12 while being engaged with the free end portion 11a of the outer wall 11. Since the space portion 15 in which the material 6 can be interposed is formed, the sealing material 6 can be interposed using the space portion 15 formed in the bottom portion 12 of the groove portion 4. The sealing performance when assembled in the groove 4 of the housing 3 can be remarkably improved.

  FIG. 4 is a diagram showing a second embodiment of the present invention. In the vehicle lamp 20 according to this embodiment, the support portion 22 protruding outside the lens 21 is locked in a locking hole 17 formed in the outer wall 11 at a position facing the positioning portion 13 of the inner wall 10. A space portion 15 in which the sealing material 6 can be interposed is formed between the free end portion 23 a of the leg portion 23 of the lens 21 and the bottom portion 12.

  The lens 21 has a position where the support portion 22 formed on the leg portion 23 is formed at a position different from the position of the support portion 22 formed on the leg portion 8 of the lens 21. It can be locked.

  According to this embodiment, the support portion 22 that protrudes to the outside of the lens 21 is locked in the locking hole 17 formed in the outer wall 11 at a position facing the positioning portion 13 of the inner wall 10. Since the space portion 15 in which the sealing material 6 can be interposed is formed between the free end portion 23a of the leg portion 23 of the lens 21 and the bottom portion 12, the space portion 15 formed in the bottom portion 12 of the groove portion 4 is formed. Since the sealing material 6 can be used by utilizing, the sealing performance when the leg portion 23 of the lens 21 is assembled to the groove portion 4 of the housing 3 can be remarkably improved. When the support portion 22 and the locking hole 17 are locked, a support strength higher than the support strength of the lens 21 by the sealing material 6 can be obtained.

  In this embodiment, the head lamp is taken as an example of the vehicle lamp 1, but the present invention is not limited to this, and a rear lamp such as a tail lamp or a stop lamp may be used. Moreover, although the positioning part 13 demonstrated a small mountain shape (cross-sectional hemispherical shape), it is not limited to this, A triangular pyramid and a quadrangular pyramid may be sufficient.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic sectional drawing which looked at the vehicle lamp which concerns on 1st Example of this invention from the top. The expanded sectional view which shows the attachment part of the lens and housing of the vehicle lamp of FIG. FIG. 3 is a schematic cross-sectional view showing a method for forming the positioning portion in FIG. 2. The schematic sectional drawing equivalent to FIG. 2 which concerns on 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,20 Vehicle lamp 2 Light source 3 Housing 4 Groove part 5 Housing opening 6 Sealing material 7, 21 Lens 8, 23 Lens leg part 8b, 23a Leg part free end part 9 Lamp chamber 10 Groove part inner wall 11 Groove part outer wall 11a Free end portion of outer wall 12 Bottom portion of groove portion 13 Positioning portion 14, 22 Support portion 15 Space portion 16 Mold 17 Locking hole

Claims (3)

A housing that supports the light source and has a groove formed around it, and covers the lamp chamber by covering the entire opening of the housing and supporting the leg by a sealing material inserted into the groove and filling the groove. A vehicle lamp comprising at least a lens,
The vehicle lamp according to claim 1, wherein a positioning portion is formed outwardly on an inner wall above the bottom of the groove portion in the groove portion. The vehicle lamp according to claim 1,
The support portion protruding to the outside of the lens is formed with a space portion in which the sealing material can be interposed between the free end portion and the bottom portion of the leg portion of the lens in a state of being locked to the free end portion of the outer wall. A vehicle lamp characterized by comprising The vehicle lamp according to claim 1,
The support portion protruding outside the lens is locked between a free end portion and a bottom portion of the leg portion of the lens in a state where the support portion is locked in a locking hole formed in the outer wall at a position facing the positioning portion of the inner wall. A vehicle lamp characterized in that a space portion in which a sealing material can be interposed is formed.

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