JP2003173705A - Headlamp for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lamp for a vehicle, which is superior against vibration while having a one-body type reflector in which two reflector parts are integrated in one body. <P>SOLUTION: A vibration damping means 34 is interposed between a housing 11 and a reflector 14. As two reflector parts 14A, 14B are installed in one body, a one-body type reflector 14 having a large size and a large weight is provided and the two reflector parts 14A, 14B are arranged in vertical direction, and thereby, it becomes a structure superior against vibration even if the structure itself is disadvantageous for vibration. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a vehicle headlamp.

[0002]

10 to 12 show a conventional example of a vehicle headlight. This vehicle headlamp 100 includes two reflector sections 104A and 104 in a single lamp chamber 103 formed between a housing 101 and a front lens 102.
An integrated reflector 104 in which B is integrally provided is housed and configured.

In this integrated reflector 104, the reflector portions 104A and 104B are light source bulbs 105 and 10, respectively.
6 is mounted to reflect the light emitted from the light source bulbs 105 and 106, and the lower reflector portion 104A is used for the traveling beam and the upper reflector portion 104B is used for the passing beam.

The reflector 104 is a vertically long lamp chamber 10.
Two reflector parts 104A, 10 according to the three spaces
It has a structure in which 4B are vertically arranged in two rows in the front and rear. Further, the reflector 104 is supported by the housing 101 at the lower reflector 104A of the reflector 104 via an optical axis adjusting mechanism so that the optical axis can be adjusted when the vehicle body is mounted.

This optical axis adjusting mechanism comprises a ball joint 107, a vertical optical axis adjusting means 108, and a left and right optical axis adjusting means 109.
In the figure, reference numeral 107c is a tilting fulcrum as a center point of the ball joint 107, reference numeral 108c is an operating point of the vertical optical axis adjusting means 108, and reference numeral 109c is an operating point of the left and right optical axis adjusting means 109. Indicates.

[0006]

However, in such a vehicle headlamp 100, since the integrated reflector 104 is large in size and heavy in weight, it is only supported at three points by the optical axis adjusting mechanism. Then, there is a possibility that it will be greatly affected by vibration. In addition, the reflector 104
There is a similar problem when the ball joint is supported at two points by the ball joint and the upper and lower optical axis adjusting means.

In particular, the two reflector sections 104A, 10
In the structure in which 4B are arranged in the vertical direction, the center of gravity is higher than in the structure in which two reflectors are arranged in the lateral direction, which is a structure disadvantageous to vibration.

The present invention has been made against the background of such a conventional technique, and provides a vehicle headlamp that is strong against vibration while having an integral reflector in which two reflector portions are integrally provided. The purpose is to provide. In particular, it is an object of the present invention to provide a vehicle headlamp that is strong against vibration while having an integral-type reflector in which two reflector portions are vertically connected.

[0009]

The invention according to claim 1 is
In the lamp room formed between the housing and the front lens,
An integrated reflector in which two light source bulbs are mounted and two reflectors that reflect the light emitted from the light source bulbs are integrally provided in the vertical direction is housed, and the reflectors are accommodated via an optical axis adjusting mechanism. In a vehicle headlamp supported by a housing, a vibration damping means is interposed between the reflector and the housing.

According to the first aspect of the present invention, there is provided an integral reflector having a relatively large size and weight, and the two reflector portions are vertically connected to each other, which is disadvantageous to vibration. Also, since the vibration damping means is interposed between the housing and the reflector, the structure is strong against vibration.

According to a second aspect of the present invention, in the vehicle headlamp according to the first aspect, the vibration damping means is projected from one of the reflector and the housing, and is connected to the other of the reflector and the housing. It is characterized by being a flexible arm.

According to the invention described in claim 2, it is possible to obtain the same effect as that of the invention described in claim 1. Further, the purpose of vibration damping can be achieved at low cost without increasing the number of parts as the vibration damping member.

According to a third aspect of the present invention, in the vehicle headlamp according to the second aspect, the flexible arm is formed into a bifurcated shape at a connecting portion of the flexible arm with the other one. It is characterized by.

According to the third aspect of the invention, in addition to the effect of the second aspect of the invention, the flexible arm is formed into a bifurcated shape at the connecting portion with the other of the flexible arm. Therefore, it is possible to maintain the vibration damping property while exhibiting excellent followability with respect to the optical axis adjustment operation.

According to a fourth aspect of the present invention, in the vehicle headlamp according to the first aspect, the vibration damping means is an elastically deformable spring member.

According to the invention described in claim 4, it is possible to obtain the same effect as that of the invention described in claim 1.

According to a fifth aspect of the present invention, in the vehicle headlamp according to the first aspect, the vibration damping means is a tubular member having a bellows portion.

According to the invention of claim 5, it is possible to obtain the same effect as that of the invention of claim 1.

According to a sixth aspect of the present invention, in the vehicle headlamp according to the fifth aspect, the tubular member is substantially opposed to the valve mounting portion formed on the reflector and the valve mounting portion of the housing. It is characterized in that it is provided so as to communicate with an opening formed at a position where the valve mounting work is possible.

According to the invention of claim 6, in addition to the effect of the invention of claim 5, since the tubular member communicates with the valve mounting portion of the reflector and the opening of the housing, it is mounted on the valve mounting portion. Even if a component such as a light source bulb falls, the fallen object is held by the tubular member, and there is no fear of damage or loss.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

First Embodiment: FIGS. 1 to 3 show a vehicle headlamp according to the first embodiment. 1 is a front view of the vehicle headlamp of this embodiment, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG. 3 is a sectional view taken along the line BB in FIG.

The vehicle headlamp 1 of this embodiment includes a housing 11, a front lens 12 forming a lamp chamber 13 between the housing 11, and a reflector 14 provided in the lamp chamber 13. The housing 11 and the reflector 14 are provided with an inner panel 15 that covers the end portions of the housing 11 and the gap therebetween.

The housing 11 is mounted and fixed to the vehicle body via a mounting flange (not shown). This housing 11
Has a front opening, and an assembling groove 16 is formed on the peripheral edge of the front opening.

The front lens 12 is a plain lens. The front lens 12 has a leg portion 17 extending rearward at the peripheral edge thereof. When the leg portion 17 is inserted and fixed in the assembly groove 16 of the housing 11, the leg portion 17 is connected to the housing 11. The chamber 13 is formed.

The reflector 14 of this embodiment is arranged in a vertically long lamp chamber 13 and has two reflector portions 14A and 1A.
4B is an integral-type reflector that is continuously provided in two stages in the front-and-rear direction via a horizontally-oriented connecting portion 14C extending in the front-rear direction. The lower reflector 14A, the connecting portion 14C, and the upper reflector portion 14 which configure the reflector 14
B is integrally formed of resin.

In the lower reflector portion 14A, a light source bulb 20 is mounted via a spring member 19 to a substantially cylindrical bulb mounting portion 18 in a substantially central portion of the lower reflector portion 14A, and a traveling beam (also referred to as a high beam). ) Is irradiated. On the other hand, the upper reflector portion 14B is the upper reflector portion 1
A light source bulb 25 is attached to a substantially cylindrical bulb attachment portion 23 at a substantially central portion of 4B via a spring member 24 to irradiate a low beam (also referred to as a low beam).

The light source bulbs 20 and 25 are turned on by the electric power supplied through the electric wires W and W. The electric wires W, W are provided in the opening 2 at a position facing the valve mounting portions 18, 25 on the rear wall of the housing 11.
It is installed in the light room 13 from Nos. 1 and 26. The openings 21 and 26 are formed in a relatively large size so that the valve can be attached thereto, and are closed by covers 22 and 27 formed of rubber or plastic material.

The integrated reflector 14 of this embodiment
Is supported by the housing 11 via an optical axis adjusting mechanism so that the optical axis of the reflector 14 can be adjusted when the vehicle body is assembled. The optical axis adjusting mechanism includes a ball joint 31, a left and right optical axis adjusting means 32, and an upper and lower optical axis adjusting means 33, which form a tilt fulcrum 31c, all of which are arranged on the lower reflector 14A of the reflector 14.

As described above, the optical axis adjusting mechanism is provided not only over the two reflector portions 14A and 14B but only over the one reflector portion 14A in order to maintain a suitable optical axis adjusting operation. Is. That is, in the structure in which the lower reflector portion 14A and the upper reflector portion 14B are separated from each other by a large distance to form two stages in the front and rear, the optical axis adjustment including the ball joint 31, the left and right optical axis adjusting means 32, and the vertical optical axis adjusting means 33 is performed. By disposing the mechanism across the two reflector portions 14A and 14B, it is possible to avoid the difficulty of the optical axis adjusting operation due to the movement error between the rotational movement of the reflector 14 and the linear movement of the optical axis adjusting means 33. This is because

In this embodiment, as shown in FIG. 3, the vibration generated in the reflector 14 between the housing 11 and the other unsupported reflector portion 14A of the reflector 14 is reduced. It has a characteristic point in which a flexible arm 34 as "vibration damping means" is interposed. The flexible arm 34 is provided so as to project forward from the inner surface of the rear wall of the housing 11, and a tip end portion 35 of the flexible arm 34 is fitted to a boss 36 formed on the back surface of the upper reflector portion 14B. By doing so, it is connected to the reflector 14. The connecting portion 35 of the flexible arm 34 is bifurcated vertically.

According to the vehicle headlamp 1 having such a structure, even if the vibration generated in the vehicle body is transmitted to the vehicle body → housing 11 → optical axis adjusting mechanism → reflector 14, it is mitigated by the flexible arm 34. It will be.

As described above, according to the vehicle headlamp 1 of the first embodiment, even if the structure is provided with the integral reflector 14 in which the two reflector portions 14A and 14B are integrally provided, In addition to the three-point support by the optical axis adjusting mechanism, the flexible arm 34 as the "vibration reducing means" for reducing the vibration generated in the reflector 14 is interposed between the housing 11 and the reflector 14, so that the structure is strong against vibration. . In particular, in the structure in which the two reflectors 14A and 14B are arranged in the vertical direction and the center of gravity is high and vibration is disadvantageous, the flexible arm 34 as the "vibration reducing means" is effective.

Further, the vehicle headlamp 1 according to the first embodiment.
According to this, the reflector 14 has two reflector parts 14
Even if the structure in which A and 14B are arranged in two stages in the front and rear, it is preferable that only the lower reflector portion 14A as "one reflector portion" is supported on the housing 11 via the optical axis adjusting mechanism. While maintaining the operability of the optical axis adjusting mechanism, the flexible arm 34 as the "vibration reducing means" is provided between the upper reflector portion 14B as the "other reflector" and the housing 11, which has become unsupported. Since it is interposed, it is possible to have a structure that is strong against vibration while maintaining good operability for adjusting the optical axis. In particular, it is possible to reliably prevent the unsupported reflector portion 14A from resonating due to vibration from the vehicle body.

Further, the vehicle headlamp 1 according to the first embodiment.
According to this, since the flexible arm 34 has the connecting portion 35 of the flexible arm 34 with the reflector 11 formed into a bifurcated shape, it exhibits a smooth followability to the optical axis adjusting operation during vehicle body assembly. At the same time, it is possible to maintain the vibration damping property in the vehicle mounted state.

The bifurcated connecting portion 3 of the flexible arm 34 is also provided.
5 is fitted and connected to the boss portion 36 on the back surface of the reflector 11, and therefore, the bifurcated connecting portion 3 is used during the connecting work.
The distal end of 5 can be narrowed and fitted into the boss portion 36, and the connecting work is easy.

In this embodiment, the flexible arm 34
Has a structure in which it projects from the housing 11 and is connected to the reflector 14, but in the present invention, a flexible arm may project from the reflector and be connected to the housing.

Other embodiments of the present invention will be described below. The same components as those in the first embodiment are designated by the same reference numerals, and the description of the components and operational effects is omitted.

Second Embodiment: FIG. 4 is a diagram showing a vehicle headlamp according to a second embodiment. The vehicle headlamp 2 according to the second embodiment has a spring member 38 as "vibration reducing means".
Is an example using. The spring member 38 is composed of a coil spring made of metal, and has a rod-shaped portion 38a at the front end.
Is fitted to a boss portion 39 formed on the back surface of the upper reflector portion 14B of the reflector 14 and has a rod-shaped portion 38b at the rear end.
Is fitted into a boss portion 40 formed on the inner surface of the rear wall of the housing 11 to connect the housing 11 and the reflector 14. The spring member 38 is
The elastic expansion and contraction in the front-rear direction and the torsional deformation in the shearing direction exhibit followability with respect to the optical axis adjustment operation at the time of assembling the vehicle body, and the reflector 14 in the vehicle mounted state.
Acts to reduce the vibration of.

According to the vehicular headlamp 2 having such a structure, the spring member 38 as the "vibration reducing means" for reducing the vibration generated in the reflector 14 is interposed between the housing 11 and the reflector 14. The same effect as that of the first embodiment can be obtained.

Further, the spring member 38 as "vibration absorbing means" is composed of a coil spring and has a structure suitable for expansion and contraction in the front-back direction.
When 4 is applied to a structure that easily vibrates in the front-rear direction, particularly good vibration damping property is exhibited.

Third Embodiment: FIGS. 5 to 7 are views showing a vehicle headlamp according to a third embodiment. In the vehicle headlamp 3 of the third embodiment, the “vibration reducing means” interposed between the reflector 11 and the housing 14 has a tubular member 44 having a bellows portion 44c as shown in FIG. It is an example configured from.

The tubular member 44 is made of a soft elastic material such as rubber, and has cylindrical mounting portions 44a and 44b provided at the front and rear ends thereof, and the mounting portions 44a and 44b.
And a bellows portion 44c provided therebetween.

A cylindrical rib 45 is provided on the back surface of the reflector 14 so as to surround the valve mounting portion 23 of the upper reflector portion 14B. On the other hand, on the inner surface of the rear wall of the housing 11, a cylindrical rib 46 is similarly projected so as to surround the opening 26 of the housing 11 at a position substantially opposite to the cylindrical rib 45.

The tubular member 44 has the tubular ribs 4
5, 46 is externally fitted and is interposed between the reflector 14 and the housing 11 so as to communicate the valve mounting portion 23 of the reflector 14 and the opening 26 of the housing 11,
The elastic expansion and contraction in the front-rear direction and the torsional deformation in the shearing direction exert the followability with respect to the optical axis adjusting operation at the time of assembling the vehicle body, and act to reduce the vibration of the reflector 14 in the vehicle mounted state.

According to the vehicle headlamp 3 of this embodiment,
Since the cylindrical member 44 as the "vibration reducing means" for reducing the vibration generated in the reflector 14 is interposed between the housing 11 and the reflector 14, the same effect as that of the first embodiment can be obtained. Further, since the tubular member 44 is provided so as to connect the bulb mounting portion 23 of the reflector 14 and the opening portion 26 of the housing 11, the light source bulb 25 mounted in the bulb mounting portion 23 falls down. Also, the fallen objects are held by the tubular member 44, and there is no fear of damage or loss. Thereby, in particular, the light source bulb 25
It is possible to prevent loss of components when replacing the.

In the above-described third embodiment, the cylindrical member 44 is an example in which the mounting portion 44a is mounted on the cylindrical rib 45 projecting from the rear surface of the reflector 14, but the present invention is not limited to this. Is, for example, the valve mounting portion 2 of the reflector 14.
3 may be attached to the outer peripheral wall, or the attaching portion 44a of the tubular member 48 may be attached to the umbrella-shaped electromagnetic shield 47 on the back surface of the valve attaching portion 23 as shown in FIG. Further, as shown in FIG. 9, the mounting portion 44 of the tubular member 49 is
The b may be externally fitted to the cylindrical portion 50 protruding from the inner surface of the cover 27, or the number of bellows may be changed.

Further, in the above-described first to third embodiments, only one "vibration reducing means" is attached, but the number and arrangement are appropriately set according to the size and weight of the reflector and the number of reflector portions. You may change the location. Further, other "vibration reducing means" may be used.

[0049]

According to the first aspect of the invention, the structure is provided with an integral reflector having a relatively large size and weight, and the two reflector portions are connected in the vertical direction, which is disadvantageous to vibration. However, since the vibration damping means is interposed between the housing and the reflector, the structure is strong against vibration.

According to the invention described in claim 2, it is possible to obtain the same effect as that of the invention described in claim 1. Further, the purpose of vibration damping can be achieved at low cost without increasing the number of parts as the vibration damping member.

According to the third aspect of the invention, in addition to the effect of the second aspect of the invention, the flexible arm is formed into a bifurcated shape at the connecting portion with the other of the flexible arm. Therefore, it is possible to exhibit good followability with respect to the optical axis adjusting operation of the reflector while maintaining the vibration damping property.

According to the invention of claim 4, since the vibration damping means is a spring member which is elastically deformable, the same effect as that of the invention of claim 2 can be obtained.

According to the invention of claim 5, since the vibration damping means is a cylindrical member having a bellows portion, the same effect as that of the invention of claim 2 can be obtained.

According to the invention of claim 6, in addition to the effect of the invention of claim 5, since the tubular member communicates with the valve mounting portion of the reflector and the opening of the housing, it is mounted on the valve mounting portion. Even if a component such as a light source bulb falls, the fallen object is held by the tubular member, and there is no fear of damage or loss.

[Brief description of drawings]

FIG. 1 is a front view of a vehicle headlamp according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

3 is a sectional view taken along the line BB in FIG.

FIG. 4 is a diagram showing a vibration damping means of a vehicle headlamp according to a second embodiment of the present invention.

FIG. 5 is a front view of a vehicle headlamp according to a third embodiment of the present invention.

6 is a cross-sectional view taken along the line CC in FIG.

FIG. 7 is a sectional view taken along the line DD in FIG.

FIG. 8 is a diagram showing a modification of the third embodiment.

FIG. 9 is a diagram showing a modification of the third embodiment.

FIG. 10 is a front view of a conventional vehicle headlamp.

11 is a cross-sectional view taken along the line EE in FIG.

12 is a cross-sectional view taken along the line FF in FIG.

[Explanation of symbols]

1 Vehicle headlights 2 Vehicle headlights 3 Vehicle headlights 11 housing 12 front lens 13 light room 14 Integrated reflector 15 Upper reflector 16 Lower reflector 20 light source bulb 23 Valve mounting part 25 light source bulb 26 opening 34 Flexible arm (vibration damping means) 35 Connection 38 Spring member (vibration damping means) 44 Cylindrical member (vibration damping means) 44c bellows 48 Cylindrical member (vibration damping means) 49 Cylindrical member (vibration damping means)

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Claims (6)

[Claims] 1. A lamp chamber, which is formed between a housing and a front lens, is provided with a light source bulb, and two reflectors for reflecting light emitted from the light source bulb are integrally provided in a vertical direction. Accommodates an integrated reflector,
A vehicle headlamp in which the reflector is supported by the housing via an optical axis adjusting mechanism, wherein a vibration damping means is interposed between the reflector and the housing. 2. The vehicle headlight according to claim 1, wherein the vibration damping means is a flexible arm projecting from one of the reflector and the housing and connected to the other of the reflector and the housing. A vehicle headlamp that is characterized by being present. 3. The vehicle headlamp according to claim 2, wherein the flexible arm is formed into a bifurcated shape at a connecting portion of the flexible arm with the other one. Headlight. 4. The vehicle headlamp according to claim 1, wherein the vibration damping means is an elastically deformable spring member. 5. The vehicle headlamp according to claim 1, wherein the vibration damping means is a tubular member having a bellows portion. 6. The vehicle headlamp according to claim 5, wherein the tubular member is formed at a position substantially opposite to the bulb mounting portion formed on the reflector and the bulb mounting portion of the housing. A vehicle headlamp, which is provided so as to communicate with an opening through which a valve can be mounted.