JPH0520202U - Optical axis adjustment mechanism for vehicle lighting - Google Patents

Abstract

(57) [Summary] [Objective] The order of assembling steps can be arbitrarily selected, the retaining member 4 can be easily attached, and the screw 310 can be shared. [Structure] Collar portion 302 that abuts from the inside of the mounting body 10
And a mounting member 33 to be mounted from the outside of the mounting body 10. As a result, the screw 300 can be first mounted on the screw mounting 30 and then mounted on the mounting body 10, or the screw 300 can be mounted on the mounting body 10 first and then screwed into the screw mounting 30. Further, the screw 300 is provided with a retaining member 4. As a result, it is possible to prevent the screw 300 from coming off the screw mounting 30. Further, the direct operation cap 315 and the operation direction changing gear 57 are used as attachment members. As a result, the screw 310 can be shared.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an optical axis adjusting mechanism of a vehicular lamp such as an automobile headlight, and in particular, a step of screwing a screw to a screw mounting, a step of attaching the screw to a mounting body, and the order of the steps are arbitrary. The optical axis adjustment mechanism of the vehicular lamp that can be selected as well as the optical axis adjustment mechanism of the vehicular lamp that can easily install a retaining member (stopper) that prevents the screw from coming off the screw mounting. Further, the present invention relates to an optical axis adjusting mechanism of a vehicle lamp that can share a screw even if the specification of the vehicle lamp is different.

[0002]

[Prior Art]

 As the optical axis adjustment mechanism for vehicle lamps, there are a direct type that operates the optical axis adjustment mechanism directly from the rear of the vehicle lamp, and an optical axis adjustment mechanism that converts the operating direction from above or in front of the vehicle lamp. There is an operation direction conversion type to adjust. Hereinafter, a conventional optical axis adjusting mechanism of a vehicular lamp will be described with reference to FIGS. 12 to 17. This example is an example used for a vehicle headlight. 12 is a front view of a vehicle headlamp equipped with a conventional direct type optical axis adjusting mechanism, FIG. 13 is a sectional view taken along line XIII-XIII in FIG. 12, and FIG. 14 is an optical axis illustrated in FIGS. It is a side view of a screw for direct operation used for an adjustment mechanism. In the figure, reference numeral 1 denotes a lamp body as a mounting body of an automobile headlamp, and the lamp body 1 is a housing 10, a lens 11 fixed by an adhesive seal to a front opening of the housing 10, and as shown in FIG. The housing 10 is provided with a spherically concave bearing portion 12 provided in a lower right portion when viewed from the front side of the housing 10, and a lamp chamber 13 defined by the housing 10 and the lens 11. A mounting portion 14 and a mounting hole 15 for a screw 31 described later are provided in the upper right and lower left of the housing 10 of the lamp body 1, respectively. In the figure, 2 is a reflector as an object to be adjusted of an automobile headlamp, and this reflector 2 has a reflecting surface 20 which is, for example, a paraboloid of revolution on the front surface, and as shown in FIG. A ball shaft 21 is planted in the lower right part of the back side when viewed from the front. Further, a mounting portion 22 for a pivot 35 and a pivot holder 36, which will be described later, as screw mountings is integrally provided on the upper right and lower left of the rear surface of the reflector 2, and a mounting hole 23 is provided in the mounting portion 22. By rotatably fitting the spherical shaft 21 of the reflector 2 to the bearing portion 12 of the housing 10, the reflector 2 is rotatably attached to the housing 10, and the reflector 2 is attached to the lamp body 1 as well. It is arranged in the lamp chamber 13. The bearing portion 12 and the ball shaft 21 described above form a ball support portion. A light source bulb (not shown) is provided on the front side of the reflector 2. In the figure, 35 and 36 are a pivot and a pivot holder as a screw mounting. The pivot 335 and the pivot holder 36 are non-rotatably attached to the attachment holes 23 of the upper right and lower left attachment portions 22 of the reflector 2 described above and non-movable in the axial direction of the screw 31 described later, respectively. In the figure, 31 is an adjusting screw (hereinafter, simply referred to as a screw). The screw 31 is integrally provided with a flange portion 32 at a substantially middle portion thereof, a direct operation portion 37 is provided at one end portion (base end portion) thereof, and a screw portion 34 is provided at the other end portion (tip end portion) thereof. The flange portion 32 serves as a stopper on the rear side when the screw is attached to the housing 10, and also serves as a retainer for preventing the O-ring 16 from protruding. The direct operating portion 37 is composed of a hexagonal head provided at one end for engaging a tool such as a wrench, and an engagement groove provided at one end surface for engaging a tool such as a screwdriver. Thus, the screw 31 is inserted into the upper right and lower left mounting portions 14 of the housing 10 from the rear side of the housing 10 with the screw portion 34 of the screw 31 facing forward, and the collar portion 32 is applied to the mounting portion 14. Further, in this state, the push nut 33 is attached to the screw 31 from the front opening of the housing 10, and the push nut 33 is applied to the mounting portion 14 to move the screw 31 to the upper right and lower left of the housing 10. Each is attached to the mounting portion 14 so as to be rotatable and immovable in the axial direction. The screw portion 34 of the screw 31 is screwed into the pivot 35. Thus, the screw 31 is first attached to the housing 10 and then screwed into the pivot 35. The screw 31, the pivot 35 as a screw mounting, and the pivot holder 36 constitute an optical axis adjusting mechanism. When the direct operating portion 37 of the screw 31 is directly operated in the arrow A direction in FIG. 13 (direction from the rear portion of the lamp) to rotate the screw 31 in the solid arrow direction or the broken arrow direction in FIG. , The pivot 35 and the pivot holder 36 move with respect to the screw 31 in the direction of the solid line arrow or the direction of the broken line arrow in FIG. As a result, the reflector 2 pivots vertically around the axis connecting the lower left optical axis adjusting mechanism and the ball support, or laterally around the axis connecting the upper right optical axis adjusting mechanism and the ball support. Then, the optical axis is adjusted.

FIG. 15 is a partial cross-sectional view of a vehicle headlamp equipped with a conventional operation direction changing type optical axis adjusting mechanism, and FIG. 16 is an operation direction changing method used for the optical axis adjusting mechanism illustrated in FIG. It is a side view of the screw for use. In the figure, the same symbols as those in FIGS. 12 to 14 indicate the same components. In the figure, 5 is a screw. The screw 5 has a flange portion 50 integrally provided at one end, a bevel gear 51 on the driven side integrally provided or fixed at one end thereof, and a screw portion 52 provided at the other end. Thus, the screw 5 is inserted into the upper right and lower left mounting portions 14 of the housing 10 from the rear side of the housing 10 with the screw portion 52 of the screw 5 facing forward, and the collar portion 50 is applied to the mounting portion 14. In addition, in that state, the push nut 33 is attached to the screw 5 from the front opening of the housing 10, and the push nut 33 is applied to the mounting portion 14 so that the screw 5 is located at the upper right and lower left of the housing 10. Each is attached to the mounting portion 14 so as to be rotatable but not axially movable. The screw portion 52 of the screw 5 is screwed into the pivot 35. Thus, the screw 5 is first attached to the housing 10 and then screwed into the pivot 35. The screw 5, the pivot 35 as the screw mounting, and the pivot holder 36 constitute an optical axis adjusting mechanism. In the figure, 53 is a gear case attached to the housing 10 with screws 54. An operation shaft 55 for changing the operation direction is attached to the gear case 53 so as to be rotatable at right angles to the screw 5. A drive-side bevel gear 56 is fixed to one end of the operation shaft 55, and the drive-side bevel gear 56 and the driven-side bevel gear 51 are meshed with each other. At the other end of the operating shaft 55, a hexagonal head portion for engaging a tool such as a spanner is provided, and at the other end surface, an engaging groove for engaging a tool such as a screwdriver is provided. The operation shaft 55 for changing the operation direction is operated from the direction of arrow B in FIG. 15 (direction from the upper part of the lamp), and the operation shaft 55 is operated via the bevel gear 56 of the operation shaft 55 and the bevel gear 51 of the screw 5. When the screw 5 orthogonal to 55 is rotated in the solid arrow direction or the broken arrow direction in FIG. 15, the pivot 35 and the pivot holder 36 move in the solid arrow direction or the broken arrow direction in FIG. 15 with respect to the screw 5. To do. As a result, the reflector 2 pivots vertically around the axis connecting the lower left optical axis adjusting mechanism and the ball support, or laterally around the axis connecting the upper right optical axis adjusting mechanism and the ball support. Then, the optical axis is adjusted.

FIG. 17 is a partial cross-sectional view of a vehicle headlamp equipped with a conventional operation direction changing type optical axis adjusting mechanism. In the figure, the same symbols as those in FIGS. 12 to 16 indicate the same components. The mounting portion 17 of the housing 10 of this example projects outward, and a recess 18 is provided inside the mounting portion 17. In the figure, 6 is a screw. The screw 6 has a knurled portion 60 at one end and a screw portion 61 at the other end. Reference numeral 62 denotes a driven-side gear for operation direction conversion, which is press-fitted and fixed to the knurled portion 60 of the screw 6. A recess for covering the mounting portion 17 is provided on one surface of the gear 62 (the surface on the side where the teeth are provided, or the surface on the screw portion 61 side of the screw 6). 30 is a screw mounting. Thus, the screw 6 is inserted into the upper right and lower left mounting portions 17 of the housing 10 from the rear side of the housing 10 with the screw portion 61 of the screw 6 forward, and the gear 62 and the mounting portion 17 of the screw 6 are inserted. The washer 38 is interposed between the and and the ridge 62 is applied to the mounting portion 17. Further, in this state, the push nut 33 is attached to the screw 6 through the washer 38 from the front opening portion of the housing 10, and the push nut 33 is applied to the concave portion 18 of the mounting portion 17 so that the screw is 6 are mounted rotatably and immovably in the axial direction on the upper right and lower left mounting portions 17 of the housing 10. The screw portion 61 of the screw 6 is screwed into the screw mounting 30. Thus, the screw 6 is first attached to the housing 10 and then screwed into the screw mounting 30. The screw 6 and the screw mounting 30 constitute an optical axis adjusting mechanism. In the figure, 63 is a holder integrally provided in the housing 10. An operation shaft 64 for changing the operation direction is attached to the holder 63 so as to be rotatable at an acute angle with respect to the screw 6. A drive-side gear 65 is fixed to one end of the operation shaft 64, and the drive-side gear 65 and the driven-side gear 62 are meshed with each other. At the other end of the operating shaft 64, a hexagonal head portion for engaging a tool such as a spanner is provided, and at the other end surface, an engaging groove for engaging a tool such as a screwdriver is provided. The operation shaft 64 for changing the operation direction is operated in the direction of arrow C in FIG. 17 (direction from the front of the lamp), and the operation shaft 64 is operated via the gear 65 of the operation shaft 64 and the gear 62 of the screw 6. 17 is rotated in the direction of the solid line arrow or the direction of the broken line arrow in FIG. 17, the screw mounting 30 moves relative to the screw 6 in the direction of the solid line arrow or the broken line arrow in FIG. To do. As a result, the reflector 2 is rotated vertically around the axis connecting the lower left optical axis adjusting mechanism and the ball support, or left and right around the axis connecting the upper right optical axis adjusting mechanism and the ball support. The optical axis is adjusted by moving.

In the above example, the lamp body 1 is used as the mounting body and the reflector 2 is used as the body to be adjusted, but the body is used as the mounting body and the lamp body is used as the body to be adjusted. Is also good.

[0006]

[Problems to be solved by the device]

 However, in the vehicular lamp having the above-described conventional optical axis adjusting mechanism, the screws 31, 5, 6 are first attached to the housing 10, and then the screw parts 34, 52, 61 of the screws 31, 5, 6 are installed. Is to be screwed into the screw mounting (including the pivot 35) 30, the process of attaching the screws 31, 5 and 6 to the housing 10, and the screw parts 34, 52 and 61 of the screws 31, 5 and 6 are screwed into the screw mounting 30. The process of screwing into the (pivot 35) and the order of the process are determined. For this reason, there is a problem that the order of assembling the lighting fixtures is fixed.

Further, the above-described conventional vehicular lamp having the optical axis adjusting mechanism is one in which the screw parts 34, 52, 61 of the screws 31, 5, 6 are simply screwed into the screw mounting 30 (pivot 35). Therefore, if the screws 31, 5 and 6 are rotated too much in the direction in which the screw mounting 30 (pivot 35) comes out of the screws 31, 5 and 6, for example, in the direction of the broken line arrow, the screws 31 and 5 will become dashed two-dotted lines in FIG. As shown, the screw 31 (5, 6) comes out of the pivot 35 (screw mounting 30), and there is a problem that the optical axis cannot be adjusted. Therefore, when a retaining member is attached to the tips of the screw portions 34, 52, 61 of the screws 31, 5, 6 and the screws 31, 5, 6 are rotated too much, the retaining member causes the retaining member to move to the reflector 2 or A stopper mechanism that contacts the screw mounting 30 (pivot 35) and prevents the screws 31, 5 and 6 from slipping out of the screw mounting 30 (pivot 35) can be considered. However, in the above-described conventional optical axis adjusting mechanism, the screws 31, 5, 6 are first attached to the housing 10, and then the screw portions 34, 52, 61 of the screws 31, 5, 6 are attached to the screw mounting 30 (pivot). 35), the reflector 2 for holding the screw mounting 30 (pivot 35) is located in front of the screw portions 34, 52, 61 of the screws 31, 5, 6. For this reason, when the retaining member is attached to the screw portions 34, 52, 61 of the screws 31, 5, 6, the reflector 2 becomes an obstacle and the attaching work of the retaining member is complicated. There is.

Further, in the vehicular lamp equipped with the above-described conventional optical axis adjusting mechanism, when the optical axis adjusting direction is different, the screw 31 for direct operation illustrated in FIGS. 13 and 14 and FIGS. There is a problem that the screw 5 for changing the operation direction and the dedicated screw shown in FIG.

The object of the present invention is to attach the screw to the screw mounting, to attach the screw to the mounting body, and to select the order of the steps, and to prevent the screw from coming out of the screw mounting. An object of the present invention is to provide an optical axis adjusting mechanism for a vehicular lamp that can be easily attached with a stopper (stopper) that prevents the screw and can share a screw even when the specifications of the vehicular lamp differ. .

[0010]

[Means for Solving the Problems]

 The invention according to claim 1 (hereinafter, simply referred to as the first invention) is provided with a flange portion that comes into contact with the mounting body from the inside, and a mounting member that is mounted on the screw from the outside of the mounting body. It is characterized by having done.

Further, a device according to claim 2 (hereinafter, simply referred to as a second device) includes a retaining member for preventing the screw from coming out of the screw mounting by hitting an object to be adjusted or a screw mounting side. The screw is equipped with a collar portion that comes into contact with the mounting body from the inside and a mounting member that is mounted on the screw from the outside of the mounting body.

Further, in the device according to claim 3 (hereinafter, simply referred to as a third device), the mounting member mounted on the screw from the outside of the mounting body is a separate member that can be mounted on a common screw. It features a cap for direct operation and a gear for changing the operation direction.

[0013]

[Action]

 The first invention is to equip the object to be adjusted with the screw in advance through the screw mounting by the flange portion of the screw that abuts from the inside of the mounting body and the mounting member that is mounted on the screw from the outside of the mounting body. Insert the screw into the mounting body from the inside of the mounting body, bring the collar of the screw into contact with the inside of the mounting body, and attach the mounting member to the screw from the outside of the mounting body to mount the screw. It can be attached to the body, or the screw can first be attached to the attachment and then the threads of the screw screwed into the screw mounting. Therefore, the step of attaching the screw to the screw mounting, the step of attaching the screw to the mounting body, and the order of the steps can be arbitrarily selected.

According to a second aspect of the invention, when the screw is rotated in a direction in which the screw comes out of the screw mounting by a retaining member provided on the screw and the adjusted body is rotated to a certain degree with respect to the mounting body, The retaining member contacts the body to be adjusted and the screw mounting side. As a result, the movement of the screw mounting with respect to the screw is restricted, and it is possible to prevent the screw from coming off the screw mounting. Moreover, the screw part of the screw that comes into contact with the mounting body from the inside and the mounting member that attaches to the screw from the outside of the mounting body pre-screw the screw part of the screw into the screw mounting, and the tip of the screw part of the screw. After attaching the retaining member to the mounting body, insert the screw into the mounting body from the inside of the mounting body so that the collar of the screw abuts the inside of the mounting body, and attach the mounting member to the screw of the mounting body. The screw can be attached to the mounting body by mounting from the outside. Therefore, a retaining member (stopper) that prevents the screw from coming out of the screw mounting can be easily attached.

Further, according to the third aspect of the invention, with the above configuration, the screw can be shared even if the specification destination of the vehicle lamp, that is, the optical axis adjustment direction is different.

[0016]

【Example】

 Hereinafter, eight examples of the embodiments of the optical axis adjusting mechanism of the vehicular lamp according to the present invention will be described with reference to FIGS. 1 to 11. In the figure, the same reference numerals as those in FIGS. 12 to 17 indicate the same parts. FIG. 1 shows a first embodiment of an optical axis adjusting mechanism of a vehicular lamp according to the present invention, and is a sectional view of a vehicle headlamp equipped with the optical axis adjusting mechanism of the present invention. This example is an example used for a vehicle headlight. In the figure, 300 is the screw of the present invention. The screw 300 includes a screw portion 301 provided from a substantially middle portion to a tip thereof, a flange portion 302 provided at a substantially middle portion and abutting against the mounting portion 17 from the inside of the housing 10, and the flange portion 302 to the other end portion. A large-diameter support portion 303 provided on the side opposite to the screw portion 311) and rotatably supported in the mounting hole 15 of the housing 10, and a small-diameter operation provided from the support portion 303 to the other end portion side. And part 304. A hexagonal head portion with which a tool such as a spanner is engaged is provided at the tip of the operation portion 304, and an engaging groove for engaging with a tool such as a screwdriver is provided at the other end surface. Since the optical axis adjusting mechanism of the vehicular lamp of the present invention in this embodiment is constructed as described above, the screw portion 301 of the screw 300 of the present invention is screwed into the screw mounting 30 mounted on the reflector 2, and then The operating portion 304 and the supporting portion 303 of the screw 300 of the present invention are inserted into the mounting hole 15 of the housing 10 from the inside of the housing 10, and the collar portion 302 of the screw 300 of the present invention is attached from the inside of the housing 10 to the mounting portion 17. The screw 300 of the present invention to the housing 10 by attaching 33 such as a push nut or an E ring as a mounting member to the operating portion 304 of the screw 300 of the present invention from the outside of the housing 10. It can be mounted rotatably and immovably in the axial direction. Alternatively, first, the screw 300 of the present invention is attached to the housing 10 as described above, and then the screw portion 301 of the screw 300 of the present invention is screwed into the screw mounting 30 to make the screw 300 of the present invention. Can be attached to the housing 10. As described above, in the optical axis adjusting mechanism of the present invention, the step of screwing the screw 300 to the screw mounting 30, the step of attaching the screw 300 to the housing 10, and the order of the steps can be arbitrarily selected.

FIG. 2 is a sectional view showing a second embodiment of the optical axis adjusting mechanism of the vehicular lamp of the present invention. In this example, a retaining member is provided in addition to that of FIG. 1, and the same reference numerals as those in FIG. In the figure, reference numeral 4 denotes a retaining member which is attached to the tip of the screw portion 301 of the screw 300. The retaining member 4 is composed of, for example, a push nut or an E ring. Thus, the screw portion 301 of the screw 300 of the present invention is screwed into the screw mounting 30 mounted on the reflector 2. The retaining member 4 is attached to the tip of the screw portion 301 of the screw 300 of the present invention. Next, the operating portion 304 and the supporting portion 303 of the screw 300 of the present invention are inserted into the mounting holes 15 of the housing 10 from the inside of the housing 10, and the flange portion 302 of the screw 300 of the present invention is inserted from the inside of the housing 10. Abut on the mounting portion 17. Then, a push nut or E ring 33 as a mounting member is attached to the operation portion 304 of the screw 300 of the present invention from the outside of the housing 10. As a result, the screw 300 of the present invention is rotatably and axially immovably attached to the housing 10. The optical axis adjusting mechanism of the vehicular lamp of the present invention in this embodiment has the above-described structure. Therefore, from the state shown in FIG. 2, the screw 300 is rotated in the direction in which the screw mounting 30 is removed from the screw 300. , Rotate the reflector 2 with respect to the lamp body 1 to some extent (at least a predetermined angle). Then, the reflector 2 rotates about the ball supporting portion, the retaining member 4 of the screw 300 hits the screw mounting 30, and the rotation of the reflector 2 is stopped. As a result, the movement of the screw mounting 30 with respect to the screw 300 is stopped, and the screw 300 can be prevented from coming off the screw mounting 30. Further, the optical axis adjusting mechanism of the vehicle lamp of the present invention in this embodiment includes a collar portion 302 that abuts from the inside of the housing 10 and a mounting member 33 that is attached to the screw 300 from the outside of the housing 10. Since the screw 300 of the invention is equipped with the screw 300, the screw 300 is previously mounted on the reflector 2 via the screw mounting 30, and the retaining member 4 is attached to the tip of the screw portion 301 of the screw 300, and then the screw 300 is attached. The screw 300 is inserted into the housing 10 from the inside of the housing 10, the collar portion 32 of the screw 300 is brought into contact with the inside of the housing 10, and the mounting member 33 is attached to the screw 300 from the outside of the housing 10. Thus, the screw 300 can be attached to the housing 10. Therefore, the retaining member 4 that prevents the screw 300 from coming off the screw mounting 30 can be easily attached.

FIG. 3 is a partial cross-sectional view showing a third embodiment of the optical axis adjusting mechanism of the vehicular lamp of the present invention, and FIG. 4 is an exploded view of the screw and the cap for direct operation used in FIG. is there. This example corresponds to the conventional example illustrated in FIGS. 13 and 14, and the same reference numerals as those in FIGS. 1 and 2 and FIGS. In the figure, 310 is a metal screw. This screw 310 has a threaded portion 311 provided from substantially the middle portion to the tip, a flange portion 312 provided at substantially the intermediate portion and abutting the mounting portion 17 from the inside of the housing 10, and the flange portion 312 to the other end portion ( A large diameter support portion 313 that is provided on the side opposite to the screw portion 311 and is rotatably supported in the mounting hole 15 of the housing 10, and a small diameter knurl provided from the support portion 313 to the other end side. And a part 314. In the figure, 315 is a cap for direct operation as a mounting member made of synthetic resin. This cap 315 has a flange 316 integrally formed at one end, a recess 317 formed at one end thereof, a hexagonal head 319 engaged with a tool such as a spanner at the other end, and a screwdriver at the other end. An engaging groove 318 for engaging a tool such as

Since the optical axis adjusting mechanism of the vehicular lamp of the present invention in this embodiment has the above-described structure, the screw 310 is mounted on the screw mounting (pivot) as in the first embodiment. 35), the step of screwing the screw 310, the step of attaching the screw 310 to the housing 10, and the order of the steps can be arbitrarily selected. That is, the screw portion 311 of the screw 310 of the present invention is screwed into the screw mounting pivot 35 mounted on the reflector 2, and then the knurled portion 314 and the support portion 313 of the screw 310 of the present invention are attached to the mounting holes 15 of the housing 10. Inserted from the inside of the housing 10, the collar portion 312 of the screw 310 of the present invention is brought into contact with the mounting portion 17 from the inside of the housing 10, and the cap 315 as a mounting member is attached to the knurled portion 314 of the screw 310 of the present invention. By mounting the screw from the outside of the housing 10, the screw 310 of the present invention can be attached to the housing 10 rotatably and immovably in the axial direction. Alternatively, first, the screw 310 of the present invention is attached to the housing 10 as described above, and then the screw portion 311 of the screw 310 of the present invention is screwed into the pivot 35 of the screw mounting. The inventive screw 310 can be attached to the housing 10. Particularly, in this embodiment, since the screw 310 is attached to the attachment portion 17 of the housing 10 by the flange portion 312 of the screw 310 and the flange portion 316 of the cap 315, a push nut or the like is unnecessary. ..

FIG. 5 is a sectional view showing a fourth embodiment of the optical axis adjusting mechanism of the vehicular lamp of the present invention. In this example, the screw member 311 of the screw 310 shown in FIG. 3 and FIG. As a result, like the second embodiment, the screw 310 can be prevented from coming off the screw mounting pivot 35, and the screw 310 can be prevented from coming off the screw mounting pivot 35. The member 4 can be easily attached.

FIG. 6 is a partial cross-sectional view showing a fifth embodiment of the optical axis adjusting mechanism of the vehicular lamp of the present invention, and FIG. 7 is an exploded view of the screw and the gear for changing the operating direction used in FIG. Is. This example corresponds to the one illustrated in FIGS. 15 and 16 of the related art, and the same reference numerals as in FIGS. 1 to 5 and FIGS. In the figure, 57 is a gear for changing the operating direction as a mounting member made of synthetic resin. A through hole 58 is provided at the center of the gear 57. Since the optical axis adjusting mechanism of the vehicular lamp of the present invention in this embodiment has the above-mentioned configuration, it has the same effects as those of the above-mentioned first and third embodiments. Can be achieved. That is, the screw portion 311 of the screw 310 of the present invention is screwed into the screw mounting pivot 35 mounted on the reflector 2, and then the knurled portion 304 and the support portion 313 of the screw 310 of the present invention are attached to the mounting hole 15 of the housing 10. The flange portion 312 of the screw 310 of the present invention is brought into contact with the mounting portion 17 from the inside of the housing 10, and the knurl portion 314 of the screw 310 of the present invention serves as a mounting member. By mounting 57 from the outside of the housing 10, the screw 310 of the present invention can be attached to the housing 10 so as to be rotatable but not axially movable. Alternatively, first, the screw 310 of the present invention is attached to the housing 10 as described above, and then the screw portion 311 of the screw 310 of the present invention is screwed into the pivot 35 of the screw mounting, whereby the screw 310 of the present invention is screwed. Can be attached to the housing 10. Further, a push nut or the like is unnecessary.

FIG. 8 is a sectional view showing a sixth embodiment of the optical axis adjusting mechanism of the vehicular lamp of the present invention. In this example, the screw member 311 of the screw 310 shown in FIG. 6 and FIG. As a result, it is possible to achieve the same operational effects as those of the above-described second embodiment and fourth embodiment.

Particularly, in the third, fourth, fifth, and sixth embodiments described above, the knurled portion 314 of the screw 310 is used for direct operation as in the third and fourth embodiments. By fixing the cap 315, the optical axis can be adjusted directly from the rear part of the lamp (in the direction of arrow a in the figure), and the knurled part 314 of the screw 310 can be adjusted as in the fifth and sixth embodiments. If the gear 57 for changing the operation direction is fixed, the optical axis can be adjusted by changing the operation direction from the upper part of the lamp (the direction of arrow B in the figure). In this way, even if the optical axis adjustment direction differs depending on the specification of the lamp, simply changing the cap 315 for direct operation as the mounting member and the gear 57 for changing the operation direction can be changed to the specification of the lamp. Can respond. Therefore, the screw 310 can be shared even if the specifications of the lamp are different.

FIG. 9 is a partial cross-sectional view showing a seventh embodiment of an optical axis adjusting mechanism of a vehicular lamp of the present invention, and FIG. 10 is an exploded view of a screw and an operation direction changing gear used in FIG. Is. This example corresponds to the conventional example illustrated in FIG. 17, and the same reference numerals as those in FIGS. 1 to 8 and FIG. In the figure, 600 is a metal screw. This screw 600 is provided with a screw portion 601 provided from approximately the middle portion to the tip, a flange portion 602 provided in the approximately intermediate portion and abutting the mounting portion 17 from the inside of the housing 10, and the flange portion 602 to the other end portion ( A large-diameter support portion 603 that is provided on the side opposite to the screw portion 601 and is rotatably supported in the mounting hole 15 of the housing 10, and a small-diameter knurl provided from the support portion 603 to the other end portion side. And part 604. In the figure, reference numeral 605 is a gear for changing the operation direction as a mounting member made of synthetic resin. The gear 605 has a tooth portion 606 at one end, a through hole 607 at the center, and a recess 608 at the one end surface.

Since the optical axis adjusting mechanism for a vehicle lamp of the present invention in this embodiment has the above-mentioned configuration, it has the same effects as those of the above-mentioned first, third and fifth embodiments. Can be achieved. That is, the screw portion 601 of the screw 600 of the present invention is screwed into the screw mounting 30 mounted on the reflector 2, and then the knurled portion 604 and the support portion 603 of the screw 600 of the present invention are fitted into the mounting hole 15 of the housing 10. Inserted from the inside of the housing 10, the collar portion 602 of the screw 600 of the present invention is brought into contact with the mounting portion 17 from the inside of the housing 10, and the gear 605 as a mounting member is attached to the knurled portion 604 of the screw 600 of the present invention. The screw 600 of the present invention can be mounted rotatably and axially immovably on the housing 10 by mounting the screw 600 from the outside of the housing 10 with the washer 38 interposed. Or, first, the screw 600 of the present invention is attached to the housing 10 as described above, and then the screw portion 601 of the screw 600 of the present invention is screwed into the screw mounting 30 to make the screw 600 of the present invention. Can be attached to the housing 10. Further, a push nut or the like is unnecessary.

FIG. 11 is a sectional view showing an eighth embodiment of the optical axis adjusting mechanism of the vehicular lamp of the present invention. In this example, the retaining member 4 is provided at the tip of the screw portion 601 of the screw 600 shown in FIGS. 9 and 10. As a result, it is possible to achieve the same effects as those of the second, fourth, and sixth embodiments described above.

It should be noted that although this embodiment is an example used for a vehicle headlamp, the present invention can also be used for other vehicle lamps. In the above-described embodiment, the lamp body 1 is used as the mounting body and the reflector 2 is used as the body to be adjusted, but the vehicle body is used as the mounting body and the lamp body is used as the body to be adjusted. Is also good. Further, in the above-described embodiment, the retaining member 4 is configured to hit the screw mounting 30 to prevent the screw 31 from coming off the screw mounting 30, but the retaining member 4 is used. Other than the mounting 30, it may be configured to hit the reflector 2 of the body to be adjusted to exert a retaining action.

[0028]

[Effect of the device]

 As is clear from the above, the optical axis adjusting mechanism of the vehicular lamp of the first invention is mounted on the screw by the collar portion of the screw that abuts from the inside of the mounting body and the screw from the outside of the mounting body. Since the mounting member and the mounting member are respectively provided, the screw is installed in advance on the body to be adjusted via the screw mounting, and the screw is inserted into the mounting body from the inside of the mounting body, and the collar portion of the screw is attached. The screw can be mounted on the mounting body by abutting it on the inside of the mounting body and mounting the mounting member on the screw from the outside of the mounting body, or by first mounting the screw on the mounting body and then You can also screw the screw part of the screw into the screw mounting. Therefore, the process of screwing the screw to the screw mounting, the process of attaching the screw to the mounting body, and the process sequence can be arbitrarily selected.

Further, the optical axis adjusting mechanism of the vehicular lamp according to the second aspect of the invention is provided with a retaining member on the screw, so that the screw is rotated in the direction in which the screw comes out of the screw mounting to be adjusted. When the body is turned to some extent with respect to the mounting body, the retaining member contacts the body to be adjusted and the screw mounting side. As a result, the movement of the screw mounting with respect to the screw is stopped, and it is possible to prevent the screw from coming off the screw mounting. Moreover, since the screw is provided with the flange part of the screw that abuts from the inside of the mounting body and the mounting member that is mounted on the screw from the outside of the mounting body, the screw part of the screw is previously installed in the screw mounting. After screwing in, attach the retaining member to the tip of the screw part of the screw, insert the screw into the mounting body from the inside of the mounting body, and bring the collar part of the screw into contact with the inside of the mounting body, and The screw can be attached to the mounting body by mounting the mounting member to the screw from the outside of the mounting body. Therefore, a retaining member (stopper) that prevents the screw from coming out of the screw mounting can be easily attached. Further, the optical axis adjusting mechanism of the vehicular lamp of the third invention is a cap or operation for direct operation of another member which can be mounted on a common screw as a mounting member mounted on the screw from the outside of the mounting body. Since the gears for changing the direction are used, the screw can be shared even if the specifications of the vehicle lamp are different.

[Brief description of drawings]

FIG. 1 is a first view of an optical axis adjusting mechanism of a vehicular lamp according to the present invention.
FIG. 3 is a cross-sectional view of a vehicle headlamp equipped with the optical axis adjusting mechanism of the present invention.

FIG. 2 is a second view of the optical axis adjusting mechanism of the vehicular lamp according to the present invention.
Sectional view showing an example of

FIG. 3 is a third view of the optical axis adjusting mechanism of the vehicular lamp according to the present invention.
Partial sectional view showing an example of

FIG. 4 is an exploded view of a screw used in the optical axis adjusting mechanism of FIG. 3 and a cap for direct operation.

FIG. 5 is a fourth view of the optical axis adjusting mechanism of the vehicular lamp according to the present invention.
Partial sectional view showing an example of

FIG. 6 is a fifth view of the optical axis adjusting mechanism of the vehicular lamp according to the present invention.
Partial sectional view showing an example of

7 is an exploded view of a screw and an operation direction changing gear used in the optical axis adjusting mechanism of FIG.

FIG. 8 is a sixth view of the optical axis adjusting mechanism of the vehicular lamp according to the present invention.
Partial sectional view showing an example of

FIG. 9 is a seventh view of the optical axis adjusting mechanism of the vehicular lamp according to the present invention.
Partial sectional view showing an example of

FIG. 10 is an exploded view of a screw and an operation direction changing gear used in the optical axis adjusting mechanism of FIG.

FIG. 11 is a partial cross-sectional view showing an eighth embodiment of the optical axis adjusting mechanism of the vehicular lamp according to the present invention.

FIG. 12 is a front view of a vehicle headlamp equipped with a conventional optical axis adjusting mechanism.

13 is a sectional view taken along line XIII-XIII in FIG.

FIG. 14 is a side view of the screw for direct operation used in FIG.

FIG. 15 is a partial cross-sectional view of a vehicle headlamp equipped with a conventional optical axis adjusting mechanism for changing the operation direction.

16 is a side view of the screw for changing the operation direction used in FIG.

FIG. 17 is a partial cross-sectional view of a conventional vehicle headlamp equipped with an optical axis adjusting mechanism for changing the operation direction.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Lamp main body (mounting body), 2 ... Reflector (adjusting body), 30 ... Screw mounting, 33 ... Mounting member, 35 ... Pivot, 36 ... Pivot holder, 300
… Screw, 301… Screw part, 302… Brim part, 304
... operation part, 310 ... screw, 311 ... screw part, 31
2 ... Collar part, 314 ... Knurl part, 315 ... Cap (mounting member) for direct operation, 4 ... Stopping member, 57
A gear (mounting member) for changing the operation direction, a screw 600, a screw 601, a screw portion 602, a collar portion 604, a knurl portion 605, and a gear (mounting member) for changing the operation direction.

Claims (3)

[Scope of utility model registration request] 1. An adjustable body is rotatably attached to an attachment body, a screw is rotatably and axially immovably attached to the attachment body, and a screw mounting is attached to the adjusted body, In the optical axis adjusting mechanism of a vehicle lamp in which the screw and the screw mounting are screwed and the screw is operated to rotate the adjusted body with respect to the mounting body to perform optical axis adjustment. The optical axis adjusting mechanism for a vehicular lamp, wherein the screw includes a flange portion that comes into contact with the mounting body from the inside, and a mounting member that is mounted on the screw from the outside of the mounting body. 2. An adjustable body is rotatably attached to an attachment body, a screw is rotatably and axially immovably attached to the attachment body, and a screw mounting is attached to the adjusted body, In the optical axis adjusting mechanism of a vehicle lamp in which the screw and the screw mounting are screwed and the screw is operated to rotate the adjusted body with respect to the mounting body to perform optical axis adjustment. The screw includes a retaining member that prevents the screw from coming off from the screw mounting by hitting the body to be adjusted or the screw mounting side, a flange portion that abuts the mounting body from the inside, and a screw from the outside of the mounting body. An optical axis adjusting mechanism for a vehicular lamp, comprising: a mounting member that is mounted on the vehicle. 3. The mounting member mounted on the screw from the outside of the mounting body is a cap for direct operation, a gear for operation direction conversion, or the like, which is a separate member that can be mounted on the common screw. The optical axis adjusting mechanism for a vehicle lamp according to claim 1 or 2.