JP2005056651A - Head light for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reflector movable headlight in which a ball joint which is a tilting fulcrum of the reflector is constituted by an integrated molding of resin, and an assembling process of the ball joint can be omitted. <P>SOLUTION: In the reflector movable headlight for an automobile in which the reflector 14 mounted with a light source 18 is tiltably supported, a movable tilting fulcrum P1 (P2) of the reflector 14 is constituted of a ball joint 120A (120B) composed of a ball part 134 on the nut member 130A (130B) side and a ball receiving part on the bearing 160A (160B) side in which two kinds of resin of which melting temperatures are different are integrated by an insert molding. After the ball pocket part 164 is secondarily molded outside the ball part 134 which has been primarily molded, the ball part 134 and the ball pocket part 164 are exfoliated at the boundary face 135, and it is made relatively slidable along the boundary face 135. Because the assembling process of the ball part 134 and the ball pocket part 164 in the manufacturing process of the headlight is omitted, manufacturing efficiency of the headlight is increased. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an automotive headlamp in which a reflector equipped with a light source is supported so as to be tiltable with respect to a lamp body, and in particular, a tilting fulcrum of a reflector supported so as to be tiltable by an aiming mechanism includes a ball portion and the ball head. The present invention relates to an automotive headlamp composed of a ball joint including a ball receiving portion that supports a ball portion.

  As a conventional vehicle headlamp of this type, as shown in FIGS. 17 and 18, a synthetic resin reflector 2 with a light source B mounted and integrated is fixed inside a synthetic resin lamp body 1. Aiming mechanism provided with a ball joint 3 constituting a tilting fulcrum and two nut members 6 and 7 constituting a moving tilting fulcrum that can be respectively screwed into the two aiming screws 4 and 5 and moved forward and backward in the axial direction. Is supported by.

That is, the aiming screws 4 and 5 are rotatably supported by screw insertion holes provided in the lamp body 1 and are also provided on the screw portions 4a and 5a of the aiming screws 4 and 5 extending forward of the lamp body 1. The synthetic resin nut members 6 and 7 (the female screw portions 6a1 and 7a1) attached to the brackets 2b and 2c extending to the reflector 2 are screwed together. The ball joint 3 which is a fixed tilting fulcrum is composed of a ball portion 3a mounted on a bracket 2a on the reflector 2 side and a ball receiving portion 3b on the lamp body 1 side that supports the ball portion 3a. Further, ball joints 8 and 9 which are movable tilting fulcrums are provided by ball portions 6a and 7b provided on nut members 6 and 7 and ball receiving portions 2b1 and 2c1 on brackets 2b and 2c which support ball portions 6a and 7b. Is configured.
Then, by turning the aiming screw 4 (5), the nut member 6 (7) advances and retreats along the aiming screw 4 (5), and the ball joint 3 which is a fixed tilting fulcrum and the ball joint which is a moving tilting fulcrum. 9 (8), the reflector 2 tilts around the tilting axis Lx (Ly), thereby adjusting (aiming) the optical axis of the lamp in the vertical (left / right) direction.
JP2002-193024

  The ball joints 3, 8, and 9 constituting the tilting fulcrum in the aiming mechanism described above are configured so as to be integrated by assembling separately formed ball portions and ball receiving portions. In addition to the need for molding equipment for molding separately and the cumbersome process of assembling the ball portion and ball receiving portion, there is a problem that the production efficiency is poor with respect to the capital investment.

  Further, the ball joint 3 which is a fixed tilting fulcrum is formed by press-fitting the ball portion 3a on the bracket 2a side into a cylindrical ball receiving portion 3b (shown enlarged in FIG. 18) with a vertical slit 3B1 on the lamp body 1 side. Because of the integration, if the assembly is prioritized, the ball part is easy to drop off.On the contrary, if the gripping force of the ball part is increased, the assemblability deteriorates, and the optimum form that satisfies both the assembly and prevention of the ball dropout is achieved. It was very troublesome to design. Furthermore, for smooth aiming, it is desirable that the ball portion and the ball receiving portion can be relatively slid while closely contacting each other, so that the molding surface of the mold for forming the ball portion and the ball receiving portion has high dimensions. The accuracy was required, and the mold design was troublesome. The ball joints 8 and 9 which are moving tilt fulcrums also have the same problem.

  The present invention has been made in view of the above-described problems of the prior art, and the object thereof is an automobile in which the ball joint assembly process can be omitted by forming the ball joint constituting the tilting fulcrum of the reflector by integral molding of resin. It is to provide a headlamp for the use.

In order to achieve the above object, in the automotive headlamp according to claim 1, in the automotive headlamp in which the reflector mounted with the light source is supported to be tiltable with respect to the lamp body,
The tilting fulcrum of the reflector is constituted by a ball joint composed of a ball portion and a ball receiving portion for supporting the ball portion, in which two kinds of resins having different melting temperatures are integrated by insert molding.

  (Operation) After the ball or ball receiving portion is primary molded with the resin having the higher melting temperature, the primary molded product is inserted into the mold, and the ball receiving portion or ball portion is formed with the resin having the lower melting temperature. By secondary molding, a ball joint in which the ball receiving portion is molded and integrated on the outside of the inner ball portion is configured.

  The ball joint immediately after the insert molding has a form in which a ball portion made of the first resin and a ball receiving portion made of the second resin covering the ball portion are joined at the boundary surface. The ball receiver and the ball receiver are applied with a predetermined torque in the direction of relative sliding along the boundary surface (the ball and the ball receiver are forced to swing relative to each other) so that the ball and the ball receiver are It peels at the boundary surface and thereafter is held in a form that allows relative sliding along the closely contacting boundary surface.

  The ball part and the ball receiving part are not formed in separate steps, but after one is primary molded, the primary molded product is inserted into a mold and the other is integrated by secondary molding. Ball joints can be molded in the molding process.

  The ball portion and the ball receiving portion are integrated in advance as a ball joint, and the process of assembling the ball portion and the ball receiving portion in the headlamp production line is not necessary.

  Since the ball portion and the ball receiving portion can be integrated as a ball joint by insert molding, it is not necessary to consider the assemblability of the ball portion and the ball receiving portion when designing the ball joint. That is, in the ball joint integrated by insert molding, means for engaging and integrating the ball portion and ball receiving portion formed separately (for example, the thin hinge portion 165 in the bearing 160A ′ shown in FIG. 12). Or the configuration of the slits 3b1 and the like in the ball receiving portion 3b that can press-fit the ball portion using elasticity.

  Since ball joints are molded into a form in which the ball receiving part or ball part is in close contact with the ball part or ball receiving part which is the primary molded product by secondary molding, when designing a mold for ball joint forming Only the molding surface of the mold corresponding to either the outer peripheral surface of the ball portion or the inner peripheral surface of the ball receiving portion, which is the primary molded product, may be designed with high accuracy.

In Claim 2, In the automotive headlamp according to Claim 1, the reflector is:
Aiming fulcrum, which is a fixed tilting fulcrum composed of a ball joint consisting of a ball part provided between the lamp body and the reflector and a ball receiving part that supports the ball part, and a screw insertion hole provided in the lamp body can be rotated. An aiming screw that is supported by and extends forward, a nut member that is screwed into the aiming screw and is prevented from rotating, and moves forward and backward in conjunction with the rotation of the aiming screw, the nut member and the nut member In a structure supported by an aiming mechanism provided with an aiming point that is a moving tilting fulcrum composed of a ball joint composed of a ball portion and a ball receiving portion that supports the ball portion, provided between the reflectors,
The fixed tilting fulcrum and / or the moving tilting fulcrum are supported by a ball part obtained by integrating at least the moving tilting fulcrum among the tilting fulcrum points of the reflector by two types of resins having different melting temperatures by insert molding. The ball joint is composed of a ball receiver.

  (Operation) Conventionally, when assembling the reflector into the lamp body via the aiming mechanism, the corresponding ball portion and ball receiving portion are engaged with each other so that the ball joint and the movable tilt fulcrum are fixed tilt fulcrums. Although it is configured as a ball joint, since the ball portion and ball receiving portion constituting the fixed tilt fulcrum and / or the moving tilt fulcrum are integrated in advance as a ball joint, the tilt fulcrum integrated in advance as a ball joint. In this case, the step (work) for engaging the ball portion and the ball receiving portion is omitted, and the production line for the headlamp is simplified accordingly.

According to a third aspect of the present invention, in the automotive headlamp according to the second aspect, the moving tilting fulcrum is supported by a ball portion and the ball portion obtained by integrating two types of resins having different melting temperatures by insert molding. Consists of a ball joint consisting of ball receivers,
The lamp body is integrally provided with a nut slide guide having a cross-sectional dovetail shape extending in parallel with the aiming screw and supporting the nut member and supporting the nut member in a slidable direction.
A T-shaped slider supported by the nut sliding guide is integrally formed on the side of the nut member, and the moving tilting fulcrum is on the opposite side of the aiming screw screw hole. The ball part of the ball joint is formed integrally,
On the other hand, the bracket extended to the reflector is configured to be fitted with a cylindrical bearing integrally formed with a ball receiving portion for supporting the ball portion.

  (Operation) Since the front end side of the aiming screw is carried by the nut sliding guide, the swinging of the reflector that is cantilevered by the aiming mechanism is suppressed, and the weight load on the reflector side that acts on the aiming mechanism is reduced. Is done.

  Also, the bearing connected to the nut member via the ball joint is mounted on the reflector side bracket, the slider of the nut member is assembled to the nut sliding guide, and the aiming screw is attached to the nut member (the aiming screw screwing hole). By screwing, the movement tilting fulcrum of the reflector in the aiming mechanism can be set.

  According to a fourth aspect of the present invention, in the automotive headlamp according to the third aspect, the slide plate of the slider has a corrugated cross section that undulates in the front-rear direction (sliding direction of the slider), and in the dovetail groove of the nut sliding guide It was made up of corrugated plates that were in pressure contact with the upper and lower surfaces at a plurality of locations in the front-rear direction.

  (Operation) The pressure contact part between the slider (slide plate) and the top and bottom surfaces of the dovetail groove of the nut slides over the entire width of the slide plate at the top of the corrugated plate (the top of the wave of the corrugated section). This is effective in suppressing the swing of the member) around the aiming screw. Since this press contact portion extends over a plurality of locations in the front-rear direction of the slide plate, it is also effective in suppressing the swing of the slider (nut member) in the front-rear direction.

  According to a fifth aspect of the present invention, in the automotive headlamp according to any one of the second to fourth aspects, the aiming screw is spaced apart upward and left and right with respect to an aiming fulcrum that is the fixed tilting fulcrum provided below. In addition to a pair of left and right aiming screws that are spaced apart from each other in the direction, the aiming fulcrum that is the fixed tilting fulcrum is configured to advance and retreat in the front-rear direction by an auto-leveling actuator.

  (Operation) The fixed tilting fulcrum (aiming fulcrum) is moved in the front-rear direction by driving the actuator, whereby the reflector is tilted around the leveling axis (the axis passing through the aiming point which is a pair of left and right moving tilting fulcrum), and the light of the reflector The axis tilts up and down. The inclination of the axle in the front-rear direction is detected by, for example, a center-of-gravity movement detection sensor that detects the movement of the center of gravity of the automobile in the front-rear direction, and the actuator is driven based on this detected value. That is, the reflector is automatically tilt-adjusted (auto-leveling) so that the optical axis of the headlamp (reflector) is always constant with respect to the axle.

  Further, when the pair of left and right aiming screws are rotated, the respective nut members advance and retreat along the aiming screws, and the reflector tilts around the virtual horizontal tilting axis passing through the left and right aiming points. In addition, when the aiming fulcrum is arranged directly below one of the pair of left and right aiming points (aiming screws), when the aiming screw that is separated from the aiming fulcrum to the left and right is rotated, the nut member advances and retreats along the aiming screw. The reflector tilts around a vertical tilting axis passing through the aiming fulcrum and the aiming point located above the aiming fulcrum.

  Further, in the automotive headlamp according to any one of claims 2 to 4, the aiming screw is a vertical aiming screw disposed at a position separated from the aiming fulcrum that is the fixed tilting fulcrum in the vertical direction; An aiming fulcrum, which is the fixed tilting fulcrum, and a left and right aiming screw disposed at a position separated in the left-right direction can also be used.

  With this configuration, the nut member (upper and lower aiming points) moves forward and backward along the upper and lower aiming screws by the rotation of the upper and lower aiming screws, and the reflector moves the aiming fulcrum and the left and right aiming points (the ball of the nut member screwed into the left and right aiming screws). It tilts around a horizontal tilting axis that passes through the ball joint and the ball joint on the reflector side. The nut member (left and right aiming point) advances and retreats along the left and right aiming screw by the rotation of the left and right aiming screws, and the reflector is aimed at the aiming fulcrum and the upper and lower aiming points (the ball part of the nut member screwed to the upper and lower aiming screws and the ball on the reflector side) It tilts around a vertical tilting axis that passes through a ball joint formed by a receiving part.

  According to the automotive headlamp according to claim 1, since the ball joint can be molded by a single molding process in which the primary molded product is inserted into the mold and secondary molded after the primary molding, the molding equipment can be simplified. Become.

  In the headlamp production line, the troublesome process of assembling the ball part and the ball receiving part as a ball joint becomes unnecessary, so that the production efficiency of the headlamp is increased.

  In designing the ball portion and ball receiving portion, it is not necessary to consider the assemblability of the ball portion and ball receiving portion, so that the design of the ball joint becomes easy.

  When designing the mold for molding the ball part and ball receiver that make up the ball joint, molding the mold corresponding to either the outer peripheral surface of the ball or the inner peripheral surface of the ball receiver that is the primary molded product Since only the surface has to be designed with high accuracy, the mold can be designed more easily.

  According to claim 2, in the headlamp production line, the step (work) of engaging the ball portion and ball receiving portion corresponding to the tilting fulcrum previously configured as a ball joint is omitted, and the production line is increased accordingly. The production efficiency of headlamps is improved while simplifying.

  According to the third aspect, since the swing of the reflector is suppressed by the nut sliding guide that carries the aiming screw, the reflector is movable so that the light distribution is not disturbed by the vibration of the vehicle body during idling or the vibration of the vehicle body due to the vehicle running. A mold headlamp is provided.

  Further, since the weight load on the reflector side that acts on the aiming mechanism is reduced by the nut sliding guide that carries the aiming screw, smooth aiming can be achieved.

  Also, in the headlamp production line, the process of engaging at least the ball receiving part of the bearing mounted on the bracket on the reflector side and the ball part on the nut member side is omitted, so the headlamp production line is simplified. As a result, headlamp production efficiency is improved.

  According to the fourth aspect of the present invention, the vibration of the nut member in the up / down / left / right and front / rear directions is surely suppressed by the cross-sectional wave type slider (slide plate), and an appropriate light distribution with less blur is obtained.

  According to claim 5, in the headlamp production line configured such that the reflector can be tilted around the leveling axis passing through the movable tilting fulcrum (aiming point) by driving the auto-leveling actuator, As a result, the process (work) for engaging the ball portion and the ball receiving portion corresponding to the tilting fulcrum of the reflector integrated as a part is omitted, so that the production line is simplified and the production efficiency of the headlamp is improved. .

  Next, embodiments of the present invention will be described based on examples.

  1 to 10 show a first embodiment of the present invention, FIG. 1 is a front view of a reflector movable type automobile headlamp according to the first embodiment of the present invention, and FIG. 2 is a horizontal view of the headlamp. Sectional view (sectional view taken along line II-II shown in FIG. 1), FIG. 3 is a longitudinal sectional view of the headlamp (sectional view taken along line III-III shown in FIG. 1), and FIG. 4 is a reflector for the lamp body. FIG. 5 is an exploded perspective view of a ball joint that constitutes an aiming fulcrum that is a fixed tilting fulcrum of the reflector, and FIGS. 6 to 9 are aiming points that are moving tilting fulcrums of the reflector. 6 is an exploded perspective view of the nut member and the nut sliding guide, FIG. 7 is an exploded perspective view of the mounting portion between the bearing and the bracket, FIG. 8 is a front view of the nut member, and FIG. a) Slider and nut sliding guide FIG. 9 is a cross-sectional view showing a vertical pressure contact between them (cross-sectional view taken along line VIII-VIII shown in FIG. 8), and FIG. 9 is a ball joint that constitutes an aiming point that is a movable tilting fulcrum provided between the bearing and the nut member FIG. 10 is a sectional view of a modification of the nut member. FIG. 10 is a sectional view taken along line IX-IX shown in FIG.

  In these drawings, reference numeral 10 denotes a container-shaped lamp body made of polypropylene resin, and a lamp chamber S is defined by assembling a front lens 12 at the front opening of the lamp body 10. In the lamp chamber S, a light source unit U in which a halogen bulb 18 as a light source is inserted and integrated into a parabolic synthetic resin reflector 14 is provided so as to be tiltable by an aiming mechanism E. Reference numeral 13 denotes an extension reflector that is disposed between the reflector 14 and the front lens 12 to hide the gap between the reflector 14 and the lamp body 10 and to make the entire interior of the lamp chamber S look like a specular color.

  The aiming mechanism E is provided in the lamp body 10 and a ball joint 20 (ball portion 64 and ball receiving portion 24) constituting an aiming fulcrum P that is a fixed tilting fulcrum interposed between the lamp body 10 and the reflector 14. A pair of aiming screws 30, 40 that are rotatably supported in the screw insertion holes 10 a, 10 b and extend forward, and are screwed into the aiming screws 30, 40 and stopped so that the aiming screws 30, 40 rotate. Synthetic resin nut members 130A and 130B that move forward and backward in conjunction with the movement, and aiming points P1 and P2 that are provided between the nut members 130A and 130B and the reflector 14 side brackets 150a and 150b and that are movable tilting fulcrums. The ball joints 120A and 120B (the ball portion 134 and the ball receiving portion 164) are provided. It is.

  The ball portion 64 of the ball joint 20 that is a fixed tilting fulcrum is provided at the front end portion of the advance / retreat rod 62 of the auto-leveling actuator 60 attached to the lamp body 10, and the ball receiving portion 24 of the ball joint 20 is the reflector 14. It is provided in the bearing 22 attached to the bracket 150c protruding to the back side.

  On the other hand, the ball portions 134 of the ball joints 120A and 120B, which are moving tilt fulcrums, are integrally formed with the nut members 130A and 130B, and the ball receiving portions 164 and 164 of the ball joints 120A and 120B protrude to the back side of the reflector 14. The bearings 160A and 160B are attached to the brackets 150a and 150b, respectively.

  A pair of left and right ball joints 120A and 120B constituting the aiming points P1 and P2 are arranged at positions facing the left and right across the bulb 18 above the bulb 18, and the aiming fulcrum P is a left corner when the lamp is viewed from the front. It is arranged directly below the aiming point P2.

  Reference numeral 230A (230B) denotes a nut sliding guide having a cross-sectional dovetail shape integrally formed with the lamp body 10, and a nut member 130A (130B) screwed into the female thread portion 32 (42) of the aiming screw 30 (40). Is supported and guided by the sliding guide 230A (230B) and can be moved back and forth in the front-rear direction.

  When the aiming screw 30 is rotated, the nut member 130A (aiming point P1) advances and retreats along the threaded portion 32 of the aiming screw 30, and the aiming fulcrum P (ball joint 20) and the aiming point P2 (ball joint 120A) are moved. The reflector 14 tilts around the vertical tilt axis Ly to be connected. Further, when the aiming screw 40 is rotated in the same direction as the aiming screw 30, the aiming point P <b> 2 (ball joint 120 </ b> B) also advances and retreats along the threaded portion 42 of the aiming screw 40, and passes through the aiming fulcrum P (ball joint 20). The reflector 14 tilts around a horizontal tilt axis (an axis parallel to the leveling axis Lx1 connecting the aiming point P2 and the aiming point P1) Lx ′. That is, the aiming screw 30 constitutes vertical and left and right aiming screws that tilt and adjust the optical axis of the lamp around the tilting axes Lx1 and Ly1, and the aiming screw 40 moves up and down that tilts and adjusts the optical axis of the lamp around the tilting axis Lx. Aiming screw is configured.

  The reflector 14 is tilted around the leveling axis Lx1 connecting the aiming point P2 and the aiming point P1 by driving the auto-leveling actuator 60, and the optical axis L of the lamp (reflector) is automatically adjusted according to the traveling state of the vehicle. Therefore, the tilt is adjusted in the vertical direction.

  That is, the actuator 60 moves the forward / backward rod 62 forward and backward based on a signal from a center-of-gravity movement detection sensor (not shown) that detects the movement of the center of gravity of the automobile in the front-rear direction, for example. Is moved back and forth, and the reflector 14 is tilted around the leveling axis Lx1, so that the optical axis L of the lamp is always kept constant with respect to the axle.

  Further, as shown in FIG. 3, the auto-leveling actuator 60 has a unit structure in which an advance / retreat rod 62 projects forward from an actuator unit case 61 incorporating a stepping motor and a gear mechanism, and is formed on the rear wall of the lamp body 10. An actuator unit case 61 is attached to the actuator mounting hole 10c. A ball portion 64 is formed at the front end portion of the forward / backward rod 62 extending forward in the lamp body 10. On the other hand, a bracket 150 c protruding from the back side of the reflector 14 is a ball that supports the ball portion 64. A synthetic resin bearing 22 on which the receiving portion 24 is formed is attached. As shown in FIG. 5, a plug 26 is formed on the front end side of the bearing 22 so as to align with a rectangular bearing insertion hole 150c1 formed in the bracket 150c. On the left and right opposing side walls of the plug 26, there are provided elastic hooks 27, 27 that engage with the peripheral edge of the insertion hole 150c1 and prevent the plug 26 that has been inserted. On the other hand, a pair of left and right hooks 25, 25 that sandwich the ball portion 64 are formed on the ball receiving portion 24 provided on the rear end side of the bearing 22, and the ball portion 64 and the ball receiving portion 24 (hooks 25, 25). Can slide relative to the vertical direction in addition to the relative rotation.

  Next, each member constituting the aiming mechanism E will be described in detail.

  First, the aiming screws 30 and 40 are axially fixed to the screw insertion holes 10a and 10b provided on the rear wall of the lamp body 10 by push-on fixes 34 and 44, and are rotatably supported. Has been. Annular gears 35 and 45 are integrally formed at the rear ends of the aiming screws 30 and 40 so that the driver D can rotate the aiming screws 30 and 40 (see FIG. 3).

  Next, the nut member 130A (130B) screwed into the aiming screw 30 (40) and the nut member 130A (130B) are prevented from rotating, and the nut member 130A (130B) is supported and slidably supported. The structures of the nut sliding guide 230A (230B) and the bearing 160A (160B) attached to the bracket 150a (150b) and supporting the ball portion 134 of the nut member 130A (130B) will be described.

  As shown in FIGS. 1, 3, 4 and 6, the nut sliding guide 230A (230B) extends back and forth in the vicinity of the lamp body wall surface above the aiming screw 30 (40), and the aiming screw 30 (40). It is formed in a rectangular frame shape having a wide dovetail groove 232 that opens on the side face facing the surface. Reference numeral 231 indicates an opening of the dovetail 232. Further, the nut sliding guide 230A (230B) is integrally formed on the wall surface of the lamp body 10, and the strength as the nut sliding guide is ensured. The nut sliding guide 230A (230B) is provided at the upper right corner (upper left corner) when the lamp body 10 is viewed from the front, as shown in FIGS.

  On the other hand, the nut member 130A (130B) is a molded article of polyacetal having excellent rigidity and slidability, and as shown in FIGS. 1 to 4, 6, and 8, a female screw portion that is screwed into the aiming screw 30 (40). A slider 137 that engages with the nut sliding guide 230A (230B) is integrally formed on the side of the thick-walled cylindrical nut member main body 131 that is long in the front and rear where 132 is formed in the center. A ball portion 134 of the ball joint 120A (120B) is integrally formed at the central portion in the longitudinal direction opposite to the 137 forming side. Furthermore, the ball receiving portion 164 of the bearing 160A (160B) is integrated with the ball portion 134 of the nut member 130A (130B) so that the ball receiving portion 164 is in sliding contact, and the nut member 130A (130B) and the bearing 160A (160B) are connected to each other. It is connected and integrated through a ball joint 120 </ b> A (120 </ b> B) including a portion 134 and a ball receiving portion 164.

  The bearing 160A (160B) is formed of a molded body of nylon or PBT that can ensure slidability with the ball portion 134 on the nut member 130A (130B) side that is in close contact with the ball receiving portion 164 formed on the rear end side. On the front end side, a rectangular plug 168 is formed that aligns with a bearing insertion hole 150a1 (150b1) formed in the bracket 150a (150b). On the upper and lower opposing side walls of the plug 168, elastic hooks 169 and 169 that engage with the peripheral edge portions of the insertion holes 150a1 and 150b1 and prevent the plug 168 from coming off are provided.

  Further, the nut member 130A (130B) and the bearing 160A (160B) have a structure in which the ball part 134 and the ball receiving part 164 constituting the ball joint 120A (120B) are integrated by insert molding. That is, after the ball part 134 is primary molded, the ball receiving part 164 is integrated by secondary molding around the ball part 134 inserted in the mold. Specifically, first, the nut member 130A (130B) is primarily formed by polyacetal. The nut member 130A (130B), which is the primary molded product, is taken out from the mold and inserted into another mold for molding the bearing 160A (160B) (mold for secondary molding). The mold for molding the bearing 160A (160B) is provided with a ball receiving portion molding cavity that covers the ball portion 134 of the inserted nut member 130A (130B), and has a melting temperature higher than that of polyacetal as a primary molding material. When the bearing 160A (160B) is secondarily formed with low nylon or PBT, as shown in FIG. 9, a ball receiving portion 164 made of nylon or PBT is integrally formed around the ball portion 134 made of polyacetal.

  The ball part 134 and the ball receiving part 164 immediately after the insert molding constituting the ball joint 120 </ b> A (120 </ b> B) are joined at the boundary surface 135 between the both 134 and 164, but along the boundary surface 135. By applying a predetermined torque in the relative sliding direction (relatively forcibly swinging the ball portion 134 and the ball receiving portion 164), the ball portion 134 and the ball receiving portion 164 are peeled at the boundary surface 135. Thereafter, it is held in a form in which it can be relatively slid along the boundary surface 135 with which it is in close contact. In order to increase the peelability at the boundary surface 135 between the ball portion 134 and the ball receiving portion 164 after integral molding, or to increase the slidability at the boundary surface 135 where the ball portion 134 and the ball receiving portion 164 are peeled off. It has been confirmed that it is effective to configure the nut members 130A, 130B (ball portions 134) with silicon-containing polyacetal.

  Further, in order to improve the slidability at the boundary surface between the ball portion 120 and the ball receiving portion 164 of the ball joint 120A, 120B, as shown in FIG. 10, the ball 161 is formed by forming an opening 161 in the bearing 160A, 160B. It can also be adjusted by reducing the sliding contact area of the receiving portion 164 with the ball portion 134.

  The slider 137 includes a leaf spring-like first slide plate 138 that presses against the upper and lower surfaces 232a and 232b in the dovetail 232 of the nut sliding guide 230A (230B), and a nut slide in cooperation with the first slide plate 138. It is composed of a second slide plate 139 that vertically holds the peripheral edge of the dovetail groove opening of the moving guide 230A (230B). The conventional slider has a leaf spring-like first slide plate of the nut sliding guide. Whereas the slider is just in contact with the top and bottom surfaces of the dovetail (the slider is in pressure contact with the nut sliding guide at two points in the vertical direction), the slider 137 is in the vertical direction with respect to the nut sliding guide 230A (230B). It has a structure in which it is press-contacted at three points (reference numerals Pa, Pb, Pc in FIG. 8), and a slider 137 (narrow) with respect to the nut sliding guide 230A (230B). Preparative member 130A, 130B) is vertically and horizontally displaced (vibrate or swing) difficult.

  Further, as shown in FIG. 8A, the first slide plate 138 has a corrugated cross section that undulates in the front-rear direction (sliding direction of the slider 137), and is above the dovetail 232 of the nut sliding guide 230A (230B). It is comprised with the corrugated board which press-contacts to lower surface 232a, 232b at each of the front-back direction several places, and the vibration to the up-down and left-right front-back direction of nut member 130A, 130B is suppressed reliably. That is, the pressure contact portions Pa and Pb between the first slide plate 138 and the upper and lower surfaces 232a and 232b in the dovetail of the nut sliding guide 230A (230B) are the tops of the corrugated plates (the tops of the waves of the corrugated cross section). Since it covers the entire width of one slide plate 138, it is effective in suppressing the swing of the slider 137 (nut members 130A, 130B) around the aiming screw 30 (40). Further, since the pressure contact portions Pa and Pb extend to a plurality of positions (Pa1, Pa2, Pa3, Pb1, Pb2) in the front-rear direction of the first slide plate 138, the slider 137 (nut members 130A, 130B) in the front-rear direction. It is also effective in suppressing the swing.

  Further, at the center portion in the width direction of the slider 137, a concave and convex portion 137a extending in the front-rear direction is provided, which is engaged with a convex and concave rib 232c provided in the front and rear of the dovetail groove 232 of the nut sliding guide 230A (230B). The slider 137 (nut members 130A, 130B) is held at the center position in the width direction of the dovetail 232 of the nut sliding guide 230A (230B), and the slider 137 (nut members 130A, 130B) is accurately moved in the front-rear direction. By ensuring sliding, smooth aiming can be achieved.

  Also, as shown in FIG. 4, the bearing insertion hole 150a1 (150b1) provided at the extending tip of the bracket 150a (150b) has a rectangular shape that matches the rectangular plug 168 of the bearing 160A (160B). Although the bearing 160B is formed and fixed in the bearing insertion hole 15b1 on the bracket 150b side, the bearing 160A is fixed in the left and right direction with respect to the bearing insertion hole 15a1. It is configured to be able to slide.

  That is, as shown in FIG. 7, the left and right width d1 of the bearing insertion hole 150a is formed slightly larger than the left and right width d2 of the rectangular plug 168 of the bearing 160A, and between the bearing insertion hole 150a1 and the plug 168. A gap s1 (see FIG. 2) is formed. Therefore, the circular movement of the reflector 14 around the vertical tilt axis Ly1 (circular movement of the bearing 160A around the vertical tilt axis Ly) and the forward / backward movement of the nut member 130A (linear movement along the aiming screw 30) due to the rotation of the aiming screw 30. ) Is different, a tensile stress or a compressive stress is generated along the leveling axis Lx1 at the attachment portion between the bracket 150a and the bearing 160A. However, the bearing 160A (plug 168) and the bearing are attached. Since the hole 150a1 slides relative to the left and right direction in FIG. 7, which is the load acting direction, no unexpected stress is generated in the attachment portion between the bracket 150a and the bearing 160A during the left and right aiming.

  Next, a procedure for assembling the reflector 14 to the lamp body 10 via the aiming mechanism E will be described. First, the lamp body 10 to which the aiming screws 30 and 40 are assembled is faced up. Next, the bearing 22 is attached to the bracket insertion hole 150c1 of the bracket 150c of the reflector 14, and the bearings 160A and 160B are inserted into the insertion holes 150a1 and 150b1 of the brackets 150a and 150b via the ball joints 120A and 120B. The bearings 160A and 160B of the bearing / nut member coupling body in which the nut members 130A and 130B are integrated are attached. Then, the reflectors 14 are lowered from above the lamp body 10 with the brackets 150a, 150b, and 150c facing downward, and the female screw portions 132 of the nut members 130A and 130B are aligned with the tips of the aiming screws 30 and 40. Then, by turning the aiming screws 30 and 40, the female screw portions 132 and 132 of the nut members 130A and 130B are screwed to the aiming screws 30 and 40, respectively, and the sliders 137 and 137 are moved to the nut sliding guides 230A and 230B. The dovetails 232 and 232 are inserted. Finally, the ball portion 64 of the leveling actuator 60 is press-fitted into the bearing 22 (the ball receiving portion 24) attached to the bracket 150c so as to pass through the actuator mounting hole 10c of the lamp body 10, and the actuator 60 Is fixed to the lamp body 10 (the mounting hole 10c thereof), so that the reflector 14 can be integrated with the lamp body 10 via an aiming mechanism E having an auto leveling mechanism.

  11 and 12 show a headlamp according to a second embodiment of the present invention, FIG. 11 is a longitudinal sectional view along the vertical tilt axis of the headlamp, and FIG. 12 constitutes a moving tilt fulcrum (aiming point). (A) is an exploded perspective view of a ball joint constituting a moving tilt fulcrum (aiming point), and (b) is a perspective view of a ball joint constituting a moving tilt fulcrum (aiming point).

  In the headlamp according to the first embodiment described above, the ball portion 64 on the actuator 60 side and the bearing 22 (the ball receiving portion 24) on the reflector 14 side that constitute the ball joint 20 are configured separately from each other. 64 and the ball receiver 24 are integrated as a ball joint 20 which is a fixed tilt fulcrum (aiming fulcrum) P. In this second embodiment, a ball which is a fixed tilt fulcrum (aiming fulcrum) P is used. A ball portion 28 on the plug 22B side integrally formed with the joint 20B and a ball receiving portion 66 on the slide bearing 65 side that supports the ball portion 28 are configured.

  Specifically, first, the plug 22B is primary-molded with nylon or PBT. The plug 22B, which is the primary molded product, is taken out of the mold and inserted into another mold for molding the slide bearing 65 (secondary molding mold). The mold for forming the slide bearing 65 is provided with a ball receiving portion forming cavity that covers the ball portion 28 of the inserted plug 22B. When the slide bearing 65 is secondarily formed by polyacetal, In the form in which the ball receiving portion 66 is integrally formed, the plug 22B and the slide bearing 65 are integrated. Thereafter, a predetermined torque is applied between the ball portion 28 and the ball receiving portion 66 to separate the ball portion 28 and the ball receiving portion 66 at the boundary surface 23, and the boundary surface between the ball portion 28 and the ball receiving portion 66. By securing the relative slidability at 23, the plug / slide bearing coupling body (slide bearing 65 with plug 22B) in which the plug 22B and the slide bearing 65 are coupled via the ball joint 20B can be configured.

  The plug 22B is provided with a pair of elastic hooks 27 and is fixedly attached to the insertion hole 150c1 of the reflector 14 side bracket 150c.

  The entire slide bearing 65 is formed in a substantially cylindrical shape, and a plurality of elastic clamping pieces 67 for holding the ball portion 64 on the auto-leveling actuator 60 side are formed on the rear end side, and an outer peripheral edge is formed on the outer periphery thereof. A plate-shaped leaf spring-like sliding portion 68 is formed in which vertical slits 138a are provided at equal intervals. A cylindrical slide guide 10d is formed around the actuator mounting hole 10c of the lamp body 10 so as to surround the ball portion 64 on the actuator 60 side, and a slide bearing 65 connected to the ball portion 64 on the actuator 60 side is provided. The plate-shaped leaf spring-like sliding portion 68 is arranged so as to be in sliding contact with the inner peripheral surface of the slide guide 10d, and the ball joint 20B, which is a fixed tilting fulcrum (aiming fulcrum) P driven by the actuator 60, in the front-rear direction. Smooth forward / backward movement is ensured.

  Further, the connection between the reflector 14 and the ball portion 64 on the actuator 60 side is performed by first attaching the actuator 60 to the actuator mounting hole 10c of the lamp body 10, and connecting the plug 22B of the plug / slide bearing connecting body to the reflector 14 side bracket 15c. It is attached to the insertion hole 15b1. Then, when the reflector 14 is brought close to the inside of the lamp body 10 and the slide bearing 65 (the leaf spring-like sliding portion 68) of the plug / slide bearing coupled body is press-fitted into the slide guide 10d, the elasticity of the slide bearing 65 is achieved. The sandwiching piece 67 grips the ball portion 64 on the actuator 60 side.

  In addition, although the plate-shaped leaf spring-shaped sliding portion 68 of the slide guide 10d and the slide bearing 65 is configured in a circular shape, it may be configured in a rectangular shape.

  Further, in the headlamp of the first embodiment described above, the ball part 134 on the nut member 130A, 130B side and the bearing 160A, 160B side constituting the ball joints 120A, 120B which are the movement tilt fulcrums (aiming points) P1, P2. In this second embodiment, the ball joints 120A ′ and 120B ′ which are the movement tilting fulcrums (aiming points) P1 and P2 are configured. The nut members 130A ′ and 130B ′ (the ball part 134 on the side) and the bearings 160A ′ and 160B ′ (the ball receiving part 164 on the side) are each formed separately and are integrated by being assembled.

  That is, a ball portion 134 is formed at the front end portion of the cylindrical nut member main body 131 having a female screw portion 132 formed at the center, and a dovetail groove shape extending forward at the side of the skirt-type rear end portion of the nut member main body 131. A T-shaped slider 137A that engages with the nut sliding guide 230B is formed. Reference numeral 138A is a leaf spring-like elastic sliding contact piece that is in pressure contact with the inner upper surface of the nut sliding guide 230B.

  As shown in FIG. 12 (a), the bearings 160A ′ and 160 ′ are continuous ball receiving portions in which the hollow container body is vertically divided at the center position, bent at the thin hinge portion 165 position, and the divided surfaces are attached to each other. It is comprised by a pair of division molded object 163,163 which can be integrated as a bearing in which 164 was formed. Reference numerals 163a and 163b denote hooks and hook hooking portions, and reference numeral 169 denotes an elastic hook that engages with the insertion holes 150a1 and 150b1 of the brackets 150a and 150b and is prevented from coming off.

  Then, the ball joints 120A ′ and 120B ′ each including the ball portion 134 and the ball receiving portion 164 can be easily obtained by sandwiching the ball portions 134 and 134 of the nut members 130A ′ and 130B ′ between the pair of divided molded bodies 163 and 163, respectively. Can be configured.

  13 to 16 show a headlamp according to a third embodiment of the present invention, FIG. 13 is a front view of the headlamp, and FIG. 14 is a horizontal sectional view of a fixed tilting fulcrum that is a main part of the headlamp. FIG. 15 is an exploded perspective view of the mounting portion between the bearing and the bracket constituting the left and right aiming points, and FIG. 16 is the mounting between the bearing and the bracket constituting the upper and lower aiming points. It is a disassembled perspective view of a part.

  In the headlamps of the first and second embodiments described above, the aiming fulcrum P, which is a fixed tilt fulcrum, has an auto leveling mechanism in which the auto leveling actuator 60 moves back and forth. In the example, the auto-leveling mechanism is not provided, and the aiming fulcrum P that is a fixed tilting fulcrum is fixedly disposed at the upper left corner between the lamp body 10A and the reflector 14A, the left and right aiming points P3 are at the upper right corner, and the upper and lower aiming points P4 are at the lower left corner. It has a structure provided with only the aiming mechanisms E1 arranged respectively.

  Then, by turning the aiming screws 40 and 30 constituting the aiming mechanism E1, the reflector 14A tilts around the horizontal tilt axis Lx2 passing through the tilt support points P and P3 and around the vertical tilt axis Ly2 passing through the tilt support points P and P4. As a result, the optical axis of the headlamp tilts vertically and horizontally.

  The aiming fulcrum P is configured by a ball joint 20A including a ball portion 64A that protrudes from the inside of the lamp body 10A and a ball receiving portion 24A that is provided on a bearing 22A that is mounted on the bracket 150c on the reflector 14A side. . The ball portion 64A is integrally formed with the lamp body 10A. Further, after the ball receiving portion 24A of the bearing 22A is integrated with the ball portion 64A by insert molding, the ball portion 64A and the ball receiving portion 24A are separated at the boundary surface. As a result, the ball portion 64A and the ball receiving portion 24A are configured to be slidable relative to each other.

  That is, in the ball joint 20A, after the ball portion 64A is primarily molded, the ball receiving portion 24A is integrated by secondary molding around the ball portion 64A inserted in the mold. Specifically, first, the lamp body 10A with the ball portion 64A is primarily molded with a primary molding material (resin). The lamp body 10A, which is the primary molded product, is taken out from the mold and inserted into another mold for molding the bearing 22A (secondary mold). The mold for molding the bearing 22A is provided with a ball receiving portion molding cavity that covers the ball portion 64A of the inserted lamp body 10A, and has a melting temperature lower than that of the primary molding material (first resin). When the bearing 22A is secondarily molded with the second resin that can be peeled off at the boundary surface with respect to the first resin that constitutes the portion 64 and can secure slidability at the peeling surface, as shown in FIG. The reflector 14 </ b> A and the bearing 22 </ b> A are integrated with each other in a form in which the ball receiving portion 22 </ b> A is integrally formed around. Thereafter, a predetermined torque is applied to the boundary surface 23 between the ball portion 64A and the ball receiving portion 22A to separate the ball portion 64A and the ball receiving portion 22A at the boundary surface 23, and the ball portion 64A and the ball receiving portion 22 are separated. By ensuring the relative slidability therebetween, the reflector 14A with the bearing 22A in which the reflector 14A and the bearing 22A are coupled via the ball joint 20A can be configured.

  Further, nut slide guides 230A and 230B are provided on the upper right side wall and the lower left side wall of the lamp body 10A, and the sliders 137 of the nut members 130A and 130B constituting the movement tilt fulcrums P3 and P4 are respectively provided on the nut slide guides 230A and 230A. The bearings 160A and 160B that are supported by 230B and connected to the nut members 160A and 160B via the ball joints 130A and 130B are inserted into the bearing insertion holes 150a1 and 150b1 of the brackets 150a and 150b on the reflector 14A side. ing. When viewed from the front of the ramp, the nut member 130A at the movement tilt fulcrum P3 that is the left and right aiming point is arranged horizontally as shown in FIG. 15, and the nut member at the movement tilt fulcrum P4 that is the upper and lower aiming point. As shown in FIG. 16, 130 </ b> B is arranged vertically.

  Further, since the engaging portion between the bearing 22A constituting the ball joint 20A which is a fixed moving fulcrum and the bearing insertion hole 150c1 is fixed in the vertical and horizontal directions, the moving tilt fulcrums P3 and P4 are tilted when the reflector 14A is tilted. It is necessary to take measures to prevent unexpected stresses on the side. Therefore, in the bearing attachment portion at the left and right aiming point P3, as shown in FIG. 15, elastic hooks 169 are provided on the upper and lower side walls of the rectangular plug 168 to fix the bearing 22A in the vertical direction and the plug 168. The left and right width d2 is formed to be smaller than the left and right width d1 of the bearing insertion hole 150a1, and the bearing 160A slides in the left and right direction with respect to the load in the left and right direction. The structure is such that no unexpected stress is generated between the bearing insertion holes 150a1.

  On the other hand, in the bearing attachment portion at the vertical aiming point P4, as shown in FIG. 16, elastic hooks 169 are provided on the left and right side walls of the rectangular plug 168 to fix the bearing 160B in the left-right direction, and the plug 168 The vertical width d2 is formed to be smaller than the vertical width d1 of the bearing insertion hole 150b1, and the bearing 160B slides in the vertical direction with respect to the load in the vertical direction. The structure is such that no unexpected stress is generated between the bearing insertion holes 150b1.

  Others are the same as those in the first embodiment described above, and the same reference numerals are given to omit redundant description.

  A procedure for assembling the reflector 14A to the lamp body 10A via the aiming mechanism E1 will be described. First, the bearing 22A-integrated lamp body 10A to which the aiming screws 30 and 40 are assembled is faced up. A bearing 22A connected through a ball joint 20A protrudes inside the lamp body 10A. Next, the bearings 160A and 160B and the bearings 160A and 160B are inserted into the insertion holes 150a1 and 150b1 of the brackets 150a and 150b via the ball joints 120A and 120B. , 160B. Then, with the brackets 150a, 150b, and 150c facing downward, the reflector 14A is lowered from above the lamp body 10A, and the bearing 22A connected to the lamp body 10A is attached to the bracket insertion hole 150c of the bracket 150c. The female screw portions 132, 132 of the nut members 130A, 130B are aligned with the tips of the aiming screws 30, 40. Then, by turning the aiming screws 30 and 40, the female screw portions 132 and 132 of the nut members 130A and 130B are screwed to the aiming screws 30 and 40, respectively, and the sliders 137 and 137 are moved to the nut sliding guides 230A and 230B. Thus, the reflector 14A can be integrated with the lamp body 10A via the aiming mechanism E1.

  In the above-described embodiment, the ball receiving portion is configured to be integrated by secondary forming on the outer side of the ball portion inserted into the mold after the ball portion of the ball joint is first molded. You may comprise so that a ball | bowl part may be integrated by secondary shaping | molding inside the ball | bowl receiving part inserted in the metal mold | die after primary shaping | molding of a receiving part.

  In the above-described embodiment, the headlamp for an automobile has been described. However, the present invention can also be applied to a fog lamp or other automobile headlamp in which a reflector is provided to be tiltable with respect to the lamp body.

1 is a front view of an automotive headlamp that is a first embodiment of the present invention. FIG. 2 is a horizontal sectional view of the headlamp (a sectional view taken along line II-II shown in FIG. 1). It is a longitudinal cross-sectional view (cross-sectional view along line III-III shown in FIG. 1) of the headlamp. It is a disassembled perspective view of the aiming mechanism which supports a reflector with respect to a lamp body so that tilting is possible. It is a disassembled perspective view of the ball joint which comprises the aiming fulcrum which is a fixed tilting fulcrum of a reflector. It is a disassembled perspective view of a nut member and a nut sliding guide. It is a disassembled perspective view of the mounting part between a bearing and a bracket. It is a front view of a nut member. FIG. 9 is a cross-sectional view (a cross-sectional view taken along line VIII-VIII shown in FIG. 8) showing a vertical pressure contact between the slider and the nut sliding guide. FIG. 9 is a cross-sectional view (a cross-sectional view taken along line IX-IX shown in FIG. 8) of a ball joint that constitutes an aiming point that is a moving tilt fulcrum provided between a bearing and a nut member. It is sectional drawing of the modification of a nut member. It is a longitudinal cross-sectional view along the vertical inclination axis | shaft of the headlamp for motor vehicles which is the 2nd Example of this invention. (A) It is a disassembled perspective view of the ball joint which comprises a movement tilting fulcrum (aiming point). (B) It is a perspective view of the ball joint which comprises a movement tilting fulcrum (aiming point). It is a front view of the headlamp for vehicles which is the 2nd example of the present invention. FIG. 14 is a horizontal sectional view (a sectional view taken along line XIV-XIV shown in FIG. 13) of a fixed tilting fulcrum that is a main part of the headlamp. It is a disassembled perspective view of the mounting part between the bearing and bracket which comprise a right-and-left aiming point. It is a disassembled perspective view of the mounting part between the bearing and bracket which comprise an up-and-down aiming point. It is a front view of the conventional automotive headlamp. It is a disassembled perspective view of the aiming mechanism of the headlamp.

Explanation of symbols

10, 10A Lamp body 10a, 10b Screw insertion hole 10c Actuator insertion hole 12 Front lens U Light source unit 14, 14A Reflector 18 Bulbs 20, 20A, 20B as light sources Ball joints 22, 22A Bearing 22B Plug 23 , 135 Boundary surface between the ball portion and the ball receiving portion 24, 24A, 66 Ball receiving portion 30, 40 aiming screw 32, 42 male screw portion 60 constituting the fixed tilting fulcrum of the reflector 60 Actuating actuator 62 Advance rod 28, 64, 64A Ball portions 120A and 120B constituting the fixed tilt fulcrum of the reflector Ball joints 130A and 130B constituting the aiming point Nut member 131 Nut member body 132 Female thread portion 134 Construct the moving tilt fulcrum of the reflector Ball portion 137 Slider 138 First slide plate 139 Second slide plate 150a, 150b, 150c Reflector side bracket 150a1, 150b1, 150c1 Bearing insertion hole of bracket
160A, 160B Bearing 164 Ball receiving portion 230A, 230B nut sliding guide 232 constituting the tilting fulcrum of the reflector 232 Dovetail E, E1 Aiming mechanism P Aiming fulcrum that is a fixed tilting fulcrum P1 Aiming point P2 that is a tilting fulcrum fulcrum Aiming point that is a fulcrum P3 Left and right aiming point that is a moving tilt fulcrum P4 Vertical aiming point that is a moving tilting fulcrum S Lamp chamber Lx1 Leveling axis Lx 'Virtual horizontal tilting axis Lx2 Horizontal tilting axis Ly1, Ly2 Vertical tilting axis

Claims (5)

In automotive headlamps in which a reflector equipped with a light source is supported to be tiltable with respect to the lamp body,
The tilting fulcrum of the reflector is composed of a ball joint composed of a ball portion and a ball receiving portion for supporting the ball portion, in which two kinds of resins having different melting temperatures are integrated by insert molding. Headlight The reflector is
Aiming fulcrum, which is a fixed tilting fulcrum composed of a ball joint composed of a ball part provided between the lamp body and the reflector and a ball receiving part for supporting the ball part, and a screw insertion hole provided in the lamp body are rotated. An aiming screw that is supported and extends forward, a nut member that is screwed into the aiming screw and is prevented from rotating, and moves forward and backward in conjunction with the rotation of the aiming screw; and the nut member; A structure provided between the reflectors and supported by an aiming mechanism having an aiming point which is a moving tilting fulcrum composed of a ball joint composed of a ball portion and a ball receiving portion for supporting the ball portion,
The fixed tilting fulcrum and / or the moving tilting fulcrum is composed of a ball joint composed of a ball portion and a ball receiving portion for supporting the ball portion, in which two types of resins having different melting temperatures are integrated by insert molding. The automotive headlamp according to claim 1, wherein The moving tilt fulcrum is composed of a ball joint composed of a ball portion and a ball receiving portion for supporting the ball portion, in which two kinds of resins having different melting temperatures are integrated by insert molding.
The lamp body is integrally provided with a nut sliding guide having a cross-sectional dovetail shape extending in parallel with the aiming screw and supporting the nut member and supporting the nut member so as to be slidable in the front-rear direction.
A T-shaped slider supported by the nut sliding guide is integrally formed on the side of the nut member, and on the opposite side across the aiming screw screw hole, the moving tilt fulcrum is provided. The ball part of a certain ball joint is formed integrally,
3. The automotive vehicle according to claim 2, wherein the bracket formed to extend to the reflector is provided with a cylindrical bearing integrally formed with a ball receiving portion for supporting the ball portion. 4. Headlight.   The said slider is provided with the corrugated-shaped slide plate which press-contacts to the up-and-down surface in the dovetail groove | channel of the said nut sliding guide at each of several places in the front-back direction in the corrugated cross section which undulates in the front-back direction. The automotive headlamp described in 1.   The aiming screw is composed of a pair of left and right aiming screws that are spaced apart from each other in the horizontal direction with respect to the aiming fulcrum that is the fixed tilting fulcrum provided below, and the aiming fulcrum that is the fixed tilting fulcrum 5. The reflector movable vehicle headlamp according to claim 2, wherein the reflector is configured to be moved forward and backward by an auto-leveling actuator.

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