Bracket member of vehicle lamp fitting

Abstract

To provide a bracket member which supports at least part of a lamp unit, is light-weight, and has high rigidity.SOLUTION: A bracket member 4 houses and fixes at least part of a lamp unit 5 configured to radiate light forward and includes a peripheral side wall 6 which has front and rear openings 17, 18, extends in an anteroposterior direction, and has a circle shape defining a housing part of the lamp unit 5 therein. At least a part of the peripheral side wall 6 is formed as a double wall 21. The bracket member 4 respectively has inner walls 13, each of which is sandwiched between the double wall 21 and extends along a circumferential direction of the peripheral side wall 6, at intermediate parts separated from the front and rear openings 17, 18.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a bracket member for a vehicle lamp that is lightweight and has sufficient rigidity. [Background technology]

[0002] In recent years, vehicle lighting fixtures have been required to be lightweight from the viewpoint of carbon neutrality, and brackets for fixing lamp units are also required to be lightweight while maintaining rigidity. For example, Patent Document 1 discloses a bracket member in which a locking part supporting a light source and a reflector and a bearing part for an aiming screw are connected by a pier. The pier structure makes the bracket member lightweight. The reflector is lance-fixed to the locking part by inserting a protrusion on its back side into a hole in the locking part. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2014-165130 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the bracket member of Patent Document 1 has a problem in that the locking portion, bearing portion, and pier are on the same plane, and the bracket member as a whole is configured to be planar, so even though it is lightweight, it has low rigidity for supporting the lamp unit.

[0005] The present invention has been made in consideration of such problems, and has an object to provide a lightweight, highly rigid bracket member for supporting at least a portion of a lamp unit. [Means for solving the problem]

[0006] A bracket member that houses and fixes at least a part of a lamp unit that emits light forward, having front and rear openings, extending in the front-to-rear direction, and having a circular shaped peripheral side wall that defines an accommodation section for the lamp unit on the inside, at least a part of the peripheral side wall being formed as a double wall, and the double wall has an inner wall at an intermediate portion spaced from both the front and rear openings, the inner wall being sandwiched between the double walls and extending circumferentially of the peripheral side wall.

[0007] (Function) The bracket has a circular circumferential side wall that extends forward and backward with openings at the front and rear, and at least a portion of the bracket is formed as a double wall, and has an inner wall along the circumferential direction that is sandwiched between the double walls. This makes the bracket lighter than if the entire peripheral side wall were a single thick wall, and the inner wall that extends along the circumferential direction provides strong rigidity against bending stresses that occur around an axis that extends along the front and rear direction.

[0008] In the bracket member for a vehicle lamp, it is preferable that the double wall has a pair of circumferential end portions, and the inner wall is integrally formed with at least one of the pair of circumferential end portions.

[0009] (Function) Since the inner wall is integrally formed with at least one of the pair of circumferential ends, the double wall has even stronger rigidity against bending stress occurring around an axis extending along the front-rear direction.

[0010] In the bracket member for a vehicle lamp, it is preferable that the double walls have a first branch wall that is sandwiched between the double walls and extends from the inner wall to at least one of the front and rear openings.

[0011] (Function) The double wall has strong rigidity against bending stress generated around an axis extending along the circumferential direction of the peripheral side wall due to the first branch wall extending from the main wall to at least one of the front and rear openings.

[0012] In the bracket member for a vehicle lamp, it is preferable that the double wall has a component mounting portion at least in a portion thereof, and the inner wall is integrally formed with the component mounting portion.

[0013] (Function) By forming the part mounting portion inside the double wall integrally with the inner wall, both the rigidity of the part mounting portion and the rigidity of the double wall against bending stress occurring around an axis extending in the front-rear direction are improved.

[0014] In the bracket member for a vehicle lamp, it is preferable that the double wall has a second branch wall that is sandwiched between the double walls and extends from the component attachment portion to at least one of the front and rear openings.

[0015] (Effect) By forming the second branch wall to extend from the component mounting portion to at least one of the front and rear openings, both the rigidity of the component mounting portion and the rigidity of the double wall against bending stress generated around an axis extending along the circumferential direction are improved. Effect of the Invention

[0016] According to the bracket member for a vehicle lamp, the double wall provided on at least a portion of the peripheral side wall and the internal wall between the double walls enable the bracket member to be made lighter while maintaining strong rigidity against bending stress generated around an axis extending along the fore-and-aft direction.

[0017] Furthermore, according to the bracket member for a vehicle lamp, the first branch wall can maintain strong rigidity against bending stress generated around an axis extending along the circumferential direction.

[0018] Furthermore, according to the bracket member for a vehicle lamp, by forming the inner wall between the double walls integrally with the component mounting portion, it is possible to maintain high rigidity against bending stress occurring around an axis extending along the front-rear direction.

[0019] In addition, according to the bracket member for a vehicle lamp, the second branch wall extending between the double walls from the component mounting portion to at least one of the front and rear openings maintains strong rigidity against bending stress generated around an axis extending circumferentially of the peripheral side wall. [Brief description of the drawings]

[0020] [Figure 1] 1 is a schematic front view of a vehicle lamp having a bracket member according to an embodiment; [Diagram 2] FIG. 4 is a perspective view of the bracket member as viewed from above diagonally forward left. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] 4A is an end view of the bracket member of FIG 3 cut at the position indicated by the reference character AA, and FIG 4B is an end view of the bracket member of FIG 3 cut at the position indicated by the reference character BB. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] A preferred embodiment of the bracket member of the present invention will be described below with reference to Fig. 1 to Fig. 6. In each drawing, the directions of the vehicle lamp 1 and the bracket member will be described as (upper: lower: left: right: front: rear = Up: Lo: Le: Ri: Fr: Re).

[0022] Fig. 1 shows a front view of a vehicle lamp 1 according to a preferred embodiment of the present invention. The vehicle lamp 1 in Fig. 1 comprises a lamp body 2 and a transparent or translucent lamp cover 3 that closes the front of the lamp body 2 and defines a lamp chamber S inside. A lamp unit 5 is attached to the lamp chamber via a bracket member 4, and light waves from the lamp unit 5 are emitted forward through the lamp cover 3.

[0023] The bracket member 4 according to this embodiment will be described with reference to Fig. 2 to Fig. 6. The bracket member 4 is composed of a peripheral side wall 6 having a circular shape. The peripheral side wall 6 is formed in a circular shape by a top wall 7, a bottom wall 8, a left side wall 9, and a right side wall 10 that are continuous at positions 6a to 6b. The peripheral side wall 6 is formed to extend in the front-rear direction, and has a front end opening 17 and a rear end opening 18.

[0024] At least a portion of the peripheral side wall 6 is formed as a double wall 21 consisting of an outer peripheral wall 19 and an inner peripheral wall 20. Specifically, as shown in Fig. 2 to Fig. 5, in the peripheral side wall 6 of this embodiment, except for the thick wall 12 of the top wall 7, the top wall 7, the bottom wall 8, the left side wall 9, and the right side wall 10 are all formed as the double wall 21 consisting of the outer peripheral wall 19 and the inner peripheral wall 20.

[0025] 2 to 4 and 6, the double wall 21 has an inner wall 13 on the inside. The inner wall 13 is sandwiched between the outer peripheral wall 19 and the inner peripheral wall 20 at a position (middle portion 13b) spaced apart from both the front end opening 17 and the rear end opening 18. In the bracket member 4 of this embodiment, the inner wall 13 is formed in the circumferential direction over the entire area of ​​the double wall 21 from the left end portion 12a to the right end portion 12b of the thick wall 12 that constitutes a pair of circumferential ends of the double wall.

[0026] The bracket member 4 has a circularly shaped peripheral side wall 6 that extends forward and backward and has a front end opening 17 and a rear end opening 18. The bracket member 4 has a double wall 21 formed therein except for the thick wall 12, and has an inner wall 13 sandwiched between the double wall 21 along the circumferential direction. As a result, the bracket member 4 is lighter than if the entire peripheral side wall 6 were a single thick wall, and the inner wall 13 extending along the circumferential direction provides the bracket member 4 with strong rigidity against bending stress generated around an axis extending along the forward and rear direction.

[0027] 2 to 4, the double wall 21 has a plurality of first branch walls 14 on the inside thereof, which are sandwiched between the outer peripheral wall 19 and the inner peripheral wall 20. As shown in Figs. 6(a) and 6(b), the plurality of first branch walls 14 are formed to extend from the inner wall 13 extending in the circumferential direction to the front end opening 17 and the rear end opening 18.

[0028] 6(a) and 6(b), the first branch wall 14 extending from the inner wall 13 to the front end opening 17 and the rear end opening 18 provides the bracket member 4 with high rigidity against bending stress occurring around an axis extending along the circumferential direction of the peripheral side wall 6. Note that the first branch wall 14 may be extended to either the front end opening 17 or the rear end opening 18 to further reduce the weight, as long as sufficient bending rigidity against bending stress around an axis extending along the circumferential direction of the bracket member 4 is obtained.

[0029] In the bracket member 4 of this embodiment, the left and right ends 12a, 12b of the thick wall 12 are regarded as a pair of circumferential ends of the double wall 21, and the inner wall 13 is formed in the entire area between the left and right ends 12a, 12b, but the inner wall 13 may be formed in a part of the inside of the double wall 21 so as to fill one of the pair of adjacent circumferential ends, with either the left end 12a of the thick wall 12 and the adjacent first branch wall 14, or a combination of a pair of adjacent first branch walls 14, or the first branch wall 14 and the right end 12b of the thick wall 12 adjacent thereto, as shown in Fig. 6(a) as a pair of circumferential ends of the double wall 21. In other words, a part of the area between the adjacent circumferential ends may be formed in a cylindrical shape penetrating from front to back without having the inner wall 13.

[0030] In addition to being integrally formed on both ends of a pair of adjacent circumferential ends as in this embodiment, the inner wall 13 may be integrally formed on only one of the pair of circumferential ends. The other circumferential end may be formed to have a cavity penetrating in the front-rear direction without being integrated with the inner wall 13. This allows the bracket member 4 to be further lightened while maintaining the necessary and sufficient rigidity against bending stress generated around an axis extending in the front-rear direction.

[0031] 2 to 5 and 6(b), the left side wall 9 and the right side wall 10 of the bracket member 4 each have a component mounting portion 16 that is integrated with a part of the double wall 21. As shown in Figs. 5 and 6(b), the pair of component mounting portions 16 are composed of a first pivot support portion 16a having a concave semicircular shape and a second pivot support portion 16b having a concave arc-shaped tip and disposed opposite to the front of the first pivot support portion 16a. The lamp unit 5 in Fig. 1 is supported between the first pivot support portion 16a and the second pivot support portion 16b of each of the component mounting portions 16 on the left and right side walls 9 and 10 by a cylindrical shaft member (not shown).

[0032] 6(b), the part mounting portion 16 is formed integrally with the upper and lower inner walls 13. By being sandwiched inside the double walls 21 and integrated with the inner walls 13 extending in the circumferential direction of the peripheral side wall 6, the part mounting portion 16 also has high rigidity against bending stress occurring around an axis extending along the front-rear direction.

[0033] 3 and 6(b), the double wall 21 extends from the first pivot support portion 16a of the part mounting portion 16 to the rear end opening 18 and has a second branch wall 15 formed integrally with the outer circumferential wall 19 on the inside. The part mounting portion 16 is formed integrally with the outer circumferential wall 19 via the second branch wall 15 extending in the front-rear direction of the circumferential side wall 6, and thus has high rigidity against bending stress generated around an axis extending along the circumferential direction of the circumferential side wall 6. The second branch wall 15 formed integrally with the outer circumferential wall 19 may be formed from the second pivot support portion 16b to the rear end opening 18.

[0034] 6(b), the part mounting portion 16 is integrally formed with the first branch wall 14 by a pair of third branch walls 16c extending upward and downward from the part mounting portion 16 in front of the internal wall 13. The pair of third branch walls 16c integrally formed with the upper and lower first branch walls 14 provides the part mounting portion 16 with even greater rigidity against bending stress generated around an axis extending along the front-rear direction. [Explanation of symbols]

[0035] 4 Bracket parts 5 Lamp unit 6 Peripheral side wall 12a Left end of thick wall (circumferential end) 12b Right end of thick wall (circumferential end) 13 Internal walls 13b Middle part 14 1st branch wall (circumferential end) 15 Second Branch Wall 16 Parts mounting section 17 Front end opening 18 Rear end opening 21 double wall

Claims

1. A bracket member that accommodates and fixes at least a portion of a lamp unit that irradiates light forward, a peripheral side wall having front and rear openings, extending in the front-rear direction, and defining an accommodation portion for the lamp unit on the inside; At least a portion of the peripheral side wall is formed as a double wall; The double wall has an inner wall sandwiched between the double wall and extending circumferentially of the peripheral side wall at an intermediate portion spaced from both the front and rear openings.

2. The double wall has a pair of circumferential ends, 2. The bracket member for a vehicle lamp according to claim 1, wherein the inner wall is integrally formed with at least one of the pair of circumferential ends.

3. The double wall is 3. The bracket member for a vehicle lamp according to claim 1, further comprising a first branch wall that is sandwiched between the double walls and extends from the inner wall to at least one of the front and rear openings.

4. The double wall has a part mounting portion at least in a portion thereof, 3. The bracket member for a vehicle lamp according to claim 1, wherein the inner wall is integrally formed with the component mounting portion.

5. The double wall is 5. The bracket member for a vehicle lamp according to claim 4, further comprising a second branch wall sandwiched between the double walls and extending from the component attachment portion to at least one of the front and rear openings.

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