JP2011038583A - Actuator and lamp device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an actuator capable of suppressing the high load on a meshing part between a gear member and a rack member when the rack member is arranged in a start point position and an end point position of a movement range thereof. <P>SOLUTION: The actuator 3 includes a motor, the gear member 14 rotated by transmission of rotary driving force of the motor, and a rack member 15 having a rack tooth part 15d meshed with the gear member 14 and linearly moved in accordance with rotation of the gear member 14. The gear member 14 includes a disk shaped small diameter gear 14b meshed with the rack tooth part 15d, and a driving side stopper 14c. The rack member 15 includes first and second driven side stoppers 15e and 15f to which the driving side stopper 14c is abutted from a rotating direction of the gear member 14 when the gear member 14 is rotated for a prescribed angle in accordance with the moving range of the rack member 15. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an actuator for linearly driving an output unit, and a lamp device capable of adjusting the direction of light emitted by the actuator.

  Conventionally, the rotational driving force of a motor is reduced by at least one reduction gear member and transmitted to the gear member, and the actuator linearly moves the rack member having a rack tooth portion meshed with the gear of the gear member. In some cases, the output unit is driven linearly. This type of actuator is used, for example, as a driving source for a lamp device that adjusts the direction of light (irradiation direction) of the headlamp by rotating the headlamp according to the traveling state of the vehicle.

  For example, in the actuator described in Patent Document 1, the rack member is held so as to be linearly movable as a positioning mechanism that determines the start point position and the end point position as the end point of the output part, that is, the start point of the rack member movement range. A stopper that contacts the rack member is provided on the holding member. The stopper is disposed in a recess formed in the rack member so as to extend in the moving direction of the rack member, and moves relative to the rack member in the recess as the rack member linearly moves. Then, when the rack member is linearly moved along with the rotation of the gear member and arranged at the starting point position, the stopper comes into contact with the inner surface of one end in the longitudinal direction of the concave portion, so that the rack member moves to the starting point position. It is prevented from being moved out of the predetermined moving range beyond. Similarly, when the rack member is linearly moved along with the rotation of the gear member and arranged at the end point position, the stopper comes into contact with the inner side surface at the other end in the longitudinal direction of the concave portion, whereby the rack member is moved to the end point. Moving beyond the predetermined movement range beyond the position is prevented.

  Further, in the actuator described in Patent Document 2, the start point position and the end point position of the movement range of the output unit are determined in the gear member disposed in the front stage of the output unit and the housing that houses the output unit, the gear member, and the like. A positioning mechanism is provided. The gear member includes a large-diameter gear that meshes with a reduction gear member that is disposed in a preceding stage of the gear member, and a disk-shaped small-diameter gear that meshes with an output portion. An annular recess is formed on the inner diameter side of the large-diameter gear, and a restricting portion protruding from the bottom surface of the recess along the rotational axis direction of the gear member is provided inside the recess. . In addition, a receiving wall portion that is inserted into the concave portion of the large-diameter gear is protruded from the housing. In such an actuator, when the motor is driven and the gear member is rotated via the reduction gear member, the output unit is rotated with the rotation of the gear member. Then, when the output portion is arranged at the start point position, one end surface in the circumferential direction of the restricting portion of the gear member comes into contact with one end surface in the circumferential direction of the receiving wall portion, and thereby the output portion exceeds the start point position and reaches a predetermined position. It is prevented from moving outside the moving range. Similarly, when the gear member is rotated and the output portion is disposed at the end point position, the other end surface in the circumferential direction of the restricting portion of the gear member comes into contact with the other end surface in the circumferential direction of the receiving wall portion. Moving beyond the predetermined moving range beyond the end point position is prevented. And although the actuator described in patent document 2 rotates an output part, the positioning mechanism provided to this actuator can be utilized also for the actuator which makes an output part move linearly.

Japanese Patent No. 3832675 Japanese Patent No. 4226893

  By the way, in the actuator described in Patent Document 1, the rack member that is linearly moved by receiving the rotational force of the gear member comes into contact with the stopper and is prevented from moving. Therefore, a load is applied from the gear member to be rotated to the rack member whose movement is prevented by the stopper. Further, since the rotational driving force of the motor unit is reduced by the reduction gear member and transmitted to the gear member, the rotational torque in the gear member is increased, and the gear of the gear member and the rack tooth portion of the rack member are increased. A large load is applied to the meshing portion. And, if the strength is ensured by increasing the tooth width of the gear and the rack tooth portion so that it can withstand the load acting on the meshing portion of the gear member and the rack member rack tooth portion, the actuator can be enlarged. As a result, the manufacturing cost of the actuator increases.

  Further, in the actuator described in Patent Document 2, the movement range of the output portion is increased by restricting the rotation of the gear member by bringing the restricting portion into contact with the receiving wall portion inside the large-diameter gear constituting the gear member. It is set. Therefore, since the force which the gear member tries to rotate is received by the receiving wall portion of the housing, it is possible to suppress a high load from being applied to the meshing portion between the gear member and the output portion. However, it cannot be used for an actuator in which the gear member rotates 360 ° or more.

  The present invention has been made in view of such circumstances, and its object is to provide a high load on the meshing portion between the gear member and the rack member when the rack member is disposed at the start point position and the end point position of the movement range. An object of the present invention is to provide an actuator capable of suppressing such a situation and a lamp device including the actuator.

  In order to solve the above-described problem, the invention according to claim 1 includes a motor, a gear member that is rotated by transmission of a rotational driving force of the motor, and a rack tooth portion that meshes with the gear member. A rack member that moves linearly as the member rotates, wherein the gear member includes a disk-shaped gear that meshes with the rack tooth portion, and a drive-side stopper, The gist of the rack member is that it has a driven-side stopper with which the drive-side stopper comes into contact with the gear member when the gear member rotates by a predetermined angle corresponding to the movement range of the rack member.

  According to this configuration, the rack member having the rack tooth portion that meshes with the gear of the gear member moves linearly as the gear member rotates. Then, when the gear member rotates by a predetermined angle corresponding to the movement range of the rack member, the driving side stopper provided on the gear member contacts the driven side stopper provided on the rack member from the rotation direction of the gear member, Further rotation of the gear member and linear movement of the rack member are prevented. That is, when the rack member is disposed at a position that is the end of the movement range of the rack member (that is, the start point position or the end point position), the driving side stopper contacts the driven side stopper. And since the drive side stopper is provided in the gear member which has a gear, and the driven side stopper is provided in the rack member which has the rack tooth part which meshes with the said gear, a gear member moves a rack member linearly. The force to be caused to be received is received by the driven side stopper with which the driving side stopper abuts. Therefore, when the rack member is arranged at the start point position or the end point position of the movement range, it is possible to suppress a high load from being applied to the meshing portion of the gear and the rack tooth portion.

  According to a second aspect of the present invention, in the actuator according to the first aspect, the drive-side stopper has a columnar shape having an outer diameter larger than an outer diameter of the gear and extending along a rotation axis direction of the gear member. None, the gist is that one end surface in the axial direction slides on a side surface of the rack member extending in the moving direction of the rack member.

  According to this configuration, when the rack member is moved, the end surface in the axial direction of the drive-side stopper slides on the side surface of the rack member in the moving direction of the rack member. The linear movement of the rack member is stabilized.

  According to a third aspect of the present invention, in the actuator according to the first or second aspect, the rack member includes a rack portion having the rack tooth portion, and the driven-side stopper is the rack in the rack portion. The gist is that it is formed at both ends in the moving direction of the member.

  According to this configuration, since the driving side stopper contacts the driven side stopper from the rotation direction of the gear member, the driven side stoppers are respectively formed at both ends of the rack member in the moving direction of the rack member in the rack portion having the rack tooth portions. Thereby, the drive side stopper provided in the gear member rotating with respect to a rack member can be made into a simple shape.

  According to a fourth aspect of the present invention, in the actuator according to any one of the first to third aspects, the gear member includes a large-diameter gear to which a rotational driving force of the motor is transmitted, and the large-diameter A circle having a notch recess provided between the gear having a smaller diameter than the gear, and a contact surface that is provided between the large-diameter gear and the gear and is perpendicular to the rotational direction of the gear member at both ends in the circumferential direction. The drive-side stopper having a columnar shape is integrally formed, and the rack member is recessed in the side of the rack tooth portion so as to extend along the same direction as the movement direction of the rack member. The gist of the invention is to have a stopper recess in which the stopper is disposed.

  According to this configuration, when the rack member is disposed at a position that is the end of the movement range, the contact surface of the drive side stopper contacts the driven side stopper of the rack member from the rotation direction of the gear member. By disposing the driving side stopper in the stopper recess, the actuator can be downsized in the direction of the rotation axis of the gear member.

  According to a fifth aspect of the present invention, in the actuator according to any one of the first to fourth aspects, the gear member has a first positioning hole penetrating in a rotation axis direction of the gear member, The rack member has a second positioning hole that coincides with the first positioning hole when viewed from the rotation axis direction of the gear member when the gear member is disposed at a normal assembly position with respect to the rack member. This is the gist.

  According to this configuration, the gear member and the rack member can be easily assembled by assembling the gear member and the rack member in a state where the first positioning hole and the second positioning hole coincide with each other when viewed from the rotation axis direction of the gear member. Can be assembled at a regular assembly position.

  According to a sixth aspect of the present invention, a second drive center that is capable of a first drive for rotating the lamp about the first axis relative to the support and that is orthogonal to the first axis is provided. 6. The first drivable lamp device that is rotated by the first actuator, wherein the first output unit protruding from the first housing can be linearly driven. 6. And a second actuator comprising the actuator according to any one of claims 1 to 5, wherein the second output portion protruding from the second housing can be linearly driven. The support is rotatably supported in each direction with the intersection of the first axis and the second axis as a fulcrum, and the first actuator is held by the support, The first output unit has its own linear drive The second actuator is connected to the ramp at a position twisted with the first shaft and crossing the second shaft so that force can be transmitted, and the second actuator is held by the support, and The gist of the invention is that the second output unit is connected to the lamp at a position twisting with the second shaft and intersecting the first shaft so as to transmit its linear driving force.

  According to this configuration, when the first output unit is linearly driven by the first actuator on the axis twisted with the first axis and intersecting the second axis, the linear driving force is transmitted to the lamp. The lamp is rotated around the first axis, that is, driven first. Further, when the second output unit is linearly driven by the second actuator on the axis that is twisted with the second axis and intersects the first axis, the linear driving force is transmitted to the lamp, and the lamp is It is rotated around the axis of 2, that is, second driven. And since the 1st and 2nd actuator is hold | maintained with respect to a support body, they do not become a load at the time of 1st drive or 2nd drive. In addition, for example, before shipment of the lamp device or during maintenance, the position of the first housing of the first actuator is adjusted in the direction along the linear drive direction of the first output unit, so that the lamp is centered on the first axis. Can be rotated (reference position adjustment). In addition, the lamp can be rotated about the second axis (reference position adjustment) by adjusting the position of the second housing of the second actuator in the direction along the linear drive direction of the second output portion. Therefore, for example, the reference position of the light direction along the horizontal direction and the vertical direction can be easily (simplely) adjusted independently for each direction, and is particularly adjusted in combination with the horizontal direction and the vertical direction. In some cases, the adjustment work becomes easy.

  According to the present invention, when the rack member is arranged at the start point position and the end point position of the movement range, an actuator capable of suppressing a high load from being applied to the meshing portion between the gear member and the rack member, and the actuator A lamp device can be provided.

The schematic diagram which looked at the lamp apparatus from the side of a horizontal direction. The schematic diagram which looked at the lamp device from the front. The exploded perspective view of an actuator. The top view of an actuator except a cover. The bottom view of an actuator except a cover. The perspective view of a gear member. Schematic of an actuator. (A) And (b) is a perspective view of a gear member and a rack member meshed with each other (A) is the schematic of an actuator when a rack member is arrange | positioned in a starting point position, (b) is a perspective view of the rack member and gear member which are arrange | positioned in a starting point position. (A) is the schematic of an actuator when a rack member is arrange | positioned in an end point position, (b) is a perspective view of the rack member and gear member which are arrange | positioned in an end point position.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
As shown in FIG. 1, the lamp device includes a lamp 2 that is supported by a lamp body 1 of a vehicle as a support, and first and second actuators 3 and 4. 1 is a schematic view of the lamp device mounted on the vehicle as viewed from the side in the horizontal direction (rightward with respect to the traveling direction of the vehicle), and FIG. 2 is a front view of the lamp device (of the vehicle). It is the schematic diagram seen from the front side.

  The lamp body 1 has a support column 1a extending forward, and as shown in FIG. 2, a spherical support recess having a substantially spherical shape opened to the front end side and the lower side (ground side) at the front end portion of the support column 1a. 1b is formed. The lamp body 1 has a support plate 1c that extends forward and below the support column 1a and has a flat plate shape that is orthogonal to the vertical direction. Then, the first actuator 3 is fixed to the lamp body 1 at a position on the side of the support pillar 1a (left side in FIG. 2) and is placed on the support plate 1c. Thus, the second actuator 4 is fixed.

  The lamp 2 has a light source (not shown) inside, and irradiates light from the light source to the outside. A first projecting portion 2a projecting upward is formed at the upper center of the lamp 2, and a first sphere portion 2b having a substantially spherical shape corresponding to the spherical support recess 1b is formed at the tip of the first projecting portion 2a. Is formed. The first sphere portion 2b is inserted into the spherical support recess 1b from the front side of the vehicle (the front side in FIG. 2), and the opening on the tip side of the support column 1a in the spherical support recess 1b is the support column 1a. The plate 5 is screwed to the plate 5 so as to be prevented from coming off. As a result, the lamp 2 is directed to the lamp body 1 in each direction (center of the first axis Y and center of the second axis X in FIG. 2) with the center O1 of the first sphere 2b as a fulcrum (rotation center). ) Is rotatably supported.

  A second projecting portion 2c projecting downward is formed at the lower center of the lamp 2, and the tip of the second projecting portion 2c is the same as the first sphere portion 2b of the first projecting portion 2a. A second sphere portion 2d having a spherical shape is formed. The center O2 of the second sphere part 2d is located on a first axis Y that passes through the center O1 of the first sphere part 2b.

  As shown in FIGS. 1 and 2, a position corresponding to the first actuator 3 (that is, the first actuator 3) is located on the side of the first sphere 2 b in the lamp 2 (on the left side in FIG. 2). The first connecting member 6 is fixed at a position overlapping in the longitudinal direction of the vehicle. The first connecting member 6 is formed so as to be capable of rotatably holding a sphere on the vehicle rear side (left side in FIG. 1).

  Further, a guide portion 1d is formed on the support plate 1c at a position corresponding to the second actuator 4 (that is, a position overlapping the second actuator 4 in the longitudinal direction of the vehicle). The second connecting member 7 is held so as to be slidable in the front-rear direction with respect to the guide portion 1d. At the end of the second connecting member 7 on the front side of the vehicle (the right end in FIG. 1), the second sphere 2d of the second protrusion 2c is centered on the center O2 of the second sphere 2d. It is connected to the pivotable. Furthermore, the 2nd connection member 7 is formed so that a spherical body can be rotatably hold | maintained by the edge part (left side edge part in FIG. 1) of the back side of the vehicle.

  As shown in FIG. 3, the first actuator 3 is formed by assembling a motor 12, a reduction gear member 13, a gear member 14, a rack member 15, a control circuit device 16, and the like to a housing 11.

  The housing 11 includes a substantially rectangular parallelepiped housing main body 20 and first and second covers 21 and 22 each having a substantially rectangular plate shape mounted on both sides in the thickness direction of the housing main body 20. . A gear housing recess 20a is formed at one end of the housing body 20 in the thickness direction (upper end in FIG. 3), and the bottom corner of the gear housing recess 20a (the left corner in FIG. 3). The motor housing recess 20b is recessed. Further, as shown in FIG. 5, a rack housing recess 20c and a substrate housing recess 20d are provided at the other end of the housing body 20 in the thickness direction (the lower end in FIG. 3). The rack housing recess 20c and the substrate housing recess 20d are formed in parallel to each other along the longitudinal direction of the housing body 20, and each has a substantially rectangular shape. As shown in FIG. 3, a circular communication hole 20e that connects the rack receiving recess 20c and the gear receiving recess 20a is formed at the bottom of the rack receiving recess 20c, and the rack receiving recess 20c. An opening 20f that opens to the outside is formed at one end in the longitudinal direction (the end on the front side of the vehicle). Further, as shown in FIG. 5, the housing body 20 is formed with a screw hole 20g at the end of the rack housing recess 20c opposite to the opening 20f.

  As shown in FIG. 3, the first cover 21 has eight first engaging claws 21 a standing on the peripheral edge thereof, and each first engaging claw 21 a has a first engaging hole. 21b is formed. And the 1st cover 21 is arrange | positioned with respect to the housing main body 20 so that the opening part of the gear accommodation recessed part 20a may be obstruct | occluded, and the 1st engaging protrusion 20m protruded and formed in eight places of the outer peripheral surface of the housing main body 20 is provided. It is fixed to the housing body 20 by being snap-fit engaged with the first engagement hole 21b of each first engagement claw 21a. The second cover 22 has seven second engaging claws 22a erected on the peripheral edge thereof, and each second engaging claw 22a has a second engaging hole 22b. Yes. The second cover 22 is disposed with respect to the housing body 20 so as to close the openings of the rack housing recess 20 c and the board housing recess 20 d (see FIG. 5), and protrudes to seven locations on the outer peripheral surface of the housing body 20. The formed second engagement protrusion 20n is fixed to the housing body 20 by being snap-fit engaged with the second engagement hole 22b of the second engagement claw 22a.

  The motor-accommodating recess 20b accommodates the substantially cylindrical motor 12, and the rotating shaft of the motor 12 has its tip end opposite to the bottom of the motor-accommodating recess 20b from the radial center of the motor 12. Protrudes to the side. The rotating shaft 12a is rotated by driving of the motor 12, and a driving gear 30 is fixed to a protruding end portion of the rotating shaft 12a so as to be integrally rotatable.

  Further, as shown in FIGS. 3 and 4, a reduction gear member 13 is disposed inside the gear housing recess 20a on the side of the motor 12 (below left diagonally of the motor 12 in FIG. 4). The reduction gear member 13 is integrally formed with a disk-like reduction large-diameter gear 13a meshing with the drive gear 30 and a disk-like reduction small-diameter gear 13b having an outer diameter smaller than that of the reduction large-diameter gear 13a. Being done. The reduction large-diameter gear 13a and the reduction small-diameter gear 13b are arranged in the axial direction so that their rotation centers (that is, the center in the radial direction) coincide with each other, and the reduction gear member 13 includes the reduction small-diameter gear 13b of the gear receiving recess 20a. The reduction large-diameter gear 13a is housed in the gear housing recess 20a so as to be disposed on the bottom side and on the opening side of the gear housing recess 20a. The reduction gear member 13 is penetrated in the axial direction by a cylindrical first support shaft 31 at the center in the radial direction. The first support shaft 31 is pivotally supported by the housing body 20 at the bottom of the gear housing recess 20a, and the reduction gear member 13 is rotatable about the first support shaft 31.

  In addition, a gear member 14 is disposed on the side of the speed reduction gear member 13 (obliquely to the left of the speed reduction gear member 13 in FIG. 4) inside the gear housing recess 20a. The gear member 14 includes a disk-shaped large-diameter gear 14a that meshes with the reduction small-diameter gear 13b of the reduction gear member 13, a small-diameter gear 14b that is smaller in diameter than the large-diameter gear 14a, and a driving-side stopper. 14c is integrally formed. The large-diameter gear 14a and the small-diameter gear 14b are aligned in the axial direction so that their rotation centers (that is, the radial center) coincide with each other, and the driving side stopper 14c is disposed between the large-diameter gear 14a and the small-diameter gear 14b. Is formed.

  As shown in FIG. 6, the drive-side stopper 14c has a cylindrical shape having a notch recess 14d that is recessed radially inward, the outer diameter of which is larger than the outer diameter of the small-diameter gear 14b and It is set to a value smaller than the outer diameter of the large gear 14a. Further, as shown in FIG. 7, the drive-side stopper 14 c has the center of curvature Oc of the outer peripheral surface thereof positioned on the rotation axis L <b> 1 of the gear member 14. That is, the large-diameter gear 14a, the small-diameter gear 14b, and the drive-side stopper 14c are arranged coaxially with their central axes positioned on the same straight line.

  The notch recess 14d has a fan shape when viewed from the direction of the rotation axis L1 of the gear member 14, and is formed from one end to the other end in the axial direction of the drive side stopper 14c and is open radially outward. Further, first and second drive side contact surfaces 14e and 14f are formed at both ends in the circumferential direction of the notch recess 14d (that is, both ends in the circumferential direction of the drive side stopper 14c). The first and second drive-side contact surfaces 14e and 14f extend along the radial direction of the drive-side stopper 14c and are orthogonal to the circumferential direction of the drive-side stopper 14c (that is, the same as the rotation direction of the gear member 14). It has a shape.

  The large-diameter gear 14a is formed with a first positioning hole 14g for positioning with the rack member 15. The first positioning hole 14g is formed on a straight line L2 extending in the radial direction through the central portion in the circumferential direction of the notch recess 14d when viewed from the direction of the rotation axis L1 of the gear member 14, and the large-diameter gear 14a is It penetrates in the direction. The first positioning hole 14g has a circular shape when viewed from the direction of the rotation axis L1 of the gear member 14.

  As shown in FIGS. 3 and 4, the gear member 14 has a large-diameter gear 14a adjacent to the bottom of the gear housing recess 20a in the gear housing recess 20a, and a small-diameter gear 14b and a drive side stopper 14c. Is arranged with respect to the housing body 20 so as to protrude into the rack receiving recess 20c from the communication hole 20e. The gear member 14 is penetrated in the axial direction by a cylindrical second support shaft 32 at the radial center. The second support shaft 32 is pivotally supported by the first cover 21, and the gear member 14 is rotatable about the second support shaft 32. The gear member 14 disposed with respect to the housing body 20 is configured such that the first positioning hole 14g is exposed from the communication hole 20e to the rack housing recess 20c side depending on the rotational position.

  As shown in FIG. 5, a rack member 15 is disposed in the rack receiving recess 20c. The rack member 15 is formed by integrally forming a substantially rectangular parallelepiped rack portion 15a and an output shaft 15b as an output portion extending from one end in the longitudinal direction of the rack portion 15a along the longitudinal direction of the rack portion 15a. .

  As shown in FIG. 3, a stopper recess 15c is formed on the side of the rack portion 15a that faces the bottom surface of the rack receiving recess 20c. The stopper recess 15c opens to one side in the thickness direction of the rack portion 15a and one side in the width direction (the side of the small-diameter gear 14b in FIG. 4), and is accompanied by the longitudinal direction of the rack portion 15a (that is, as the gear member 14 rotates). It extends from one end of the rack portion 15a to the other end along the movement direction of the rack member 15. The depth of the stopper recess 15c (depth in the thickness direction of the rack portion 15a) is slightly shallower than the axial length of the drive-side stopper 14c of the gear member 14, and the bottom surface of the stopper recess 15c. Is flat.

  Further, the rack portion 15a has a small diameter of the gear member 14 at a portion adjacent to the stopper recess 15c in the thickness direction of the rack portion 15a (the same direction as the direction of the rotation axis L1 of the gear member 14 inside the housing body 20). A rack tooth portion 15d that meshes with the gear 14b is formed. The rack tooth portion 15d is formed so that a plurality of teeth are juxtaposed in the longitudinal direction of the rack portion 15a, and is formed from one end portion to the other end portion in the longitudinal direction of the rack portion 15a.

  A first driven stopper 15e and a second driven stopper 15f are integrally formed at both ends in the longitudinal direction of the rack portion 15a and at both ends in the longitudinal direction of the stopper recess 15c and the rack tooth portion 15d. Yes. The first driven-side stopper 15e and the second driven-side stopper 15f have a rectangular plate shape, and the small-diameter gear 14b meshed with the rack tooth portion 15d and the rack portion 15b face each other in the width direction of the rack portion 15a. Direction) and protrudes from the rack tooth portion 15d. Then, as shown in FIG. 5, the tip surfaces of the first driven side stopper 15e and the second driven side stopper 15f (end surfaces in the width direction of the rack portion 15a in the first driven side stopper 15e and the second driven side stopper 15f) are formed. The first driven-side contact surface 15g and the second driven-side contact surface 15h are planar and parallel to the longitudinal direction of the rack portion 15a and orthogonal to the width direction of the rack portion 15a.

  Furthermore, a second positioning hole 15k that penetrates the rack portion 15a in the thickness direction is formed in the bottom of the stopper recess 15c in the rack portion 15a. The second positioning hole 15k is formed at a position corresponding to the central portion in the longitudinal direction of the rack tooth portion 15d. The shape of the rack portion 15a viewed from the thickness direction is circular, and the diameter thereof is It is equal to the first positioning hole 14g formed in the large-diameter gear 14a of the gear member 14. The second positioning hole 15k is exposed from the communication hole 20e to the gear receiving recess 20a depending on the position of the rack member 15 in the rack receiving recess 20c.

  As shown in FIGS. 7 and 8A, the rack member 15 and the gear member 14 include a first positioning hole 14g exposed from the communication hole 20e when viewed from the rotation axis L1 direction of the gear member 14, and The rack tooth portion 15d and the small-diameter gear 14b are engaged with each other and assembled in a state where the second positioning holes 15k coincide (that is, the first positioning holes 14g and the second positioning holes 15k overlap in the axial direction). Thereby, the gear member 14 and the rack member 15 which mesh with each other can be easily assembled at the regular assembly position. In the present embodiment, the regular assembly position of the gear member 14 and the rack member 15 is determined when the rack member 15 linearly moved with the rotation of the gear member 14 is arranged at the center of the moving range. Is the position. When the gear member 14 and the rack member 15 are assembled to each other, the drive side stopper 14c is substantially accommodated in the stopper recess 15c, and the axial direction of the drive side stopper 14c on the small-diameter gear 14b side on the bottom surface of the stopper recess 15c. The end surfaces of the slidably contact with each other (see FIG. 8B).

  As shown in FIGS. 3 and 5, the output shaft 15b extends in parallel with the moving direction of the rack portion 15a accompanying the rotation of the gear member 14 from the end surface on the opening 20f side of the rack receiving recess 20c in the rack portion 15a. It has a cylindrical shape and protrudes outside the housing 11 from the opening 20f of the rack housing recess 20c. Further, the output shaft 15b has a spherical sphere coupling portion 15m at the tip thereof.

  A control circuit device 16 is accommodated in the substrate accommodating recess 20d. The control circuit device 16 is configured by mounting a plurality of electronic components 16b on a circuit board 16a having a substantially rectangular plate shape. Further, on the surface of the circuit board 16a that faces the bottom surface of the substrate housing recess 20d, there is a substantially square cylindrical connector portion 16c to which an external connector (not shown) for supplying power to the first actuator 3 is connected. It is fixed.

  As shown in FIG. 4, when the motor 12 is driven by the control circuit device 16 when the power is supplied from the connector portion 16c and the first actuator 3 configured as described above is rotated by the rotation shaft 12a. The driving gear 30 is rotated, and the rotational driving force of the motor 12 is transmitted from the driving gear 30 to the gear member 14 while being decelerated through the reduction gear member 13. The rotational movement of the gear member 14 is converted into a linear movement of the rack member 15 by the rack tooth portion 15d meshing with the small-diameter gear 14b, and the rack member 15 is linearly moved along with the rotation of the gear member 14. The output shaft 15b is linearly driven along the axial direction. At this time, the drive side stopper 14c rotates in the circumferential direction along with the rotation of the gear member 14 at the side of the rack tooth portion 15d (that is, the side of the rack tooth portion 15d in the direction of the rotation axis L1 of the gear member 14). At the same time, the end surface in the axial direction on the small-diameter gear 14b side of the drive side stopper 14c slides on the bottom surface of the stopper recess 15c.

  For example, as shown in FIG. 7, when the gear member 14 rotates 313 ° clockwise as shown in FIG. 9A from the state in which the rack member 15 is arranged at the center of the moving range, the driving side stopper 14c. The first drive-side contact surface 14e contacts the first driven-side contact surface 15g of the first driven-side stopper 15e of the rack member 15 from the rotation direction of the gear member 14, and the timepiece of the gear member 14 beyond that. Directional rotation is prevented. That is, at the starting point position P1, which is the starting point of the movement range of the rack member 15, the first driving side contact surface 14e of the driving side stopper 14c contacts the first driven side contact surface 15g of the first driven side stopper 15e, It is possible to prevent the rack member 15 from being moved outside the preset movement range. At this time, as shown in FIG. 9B, the contact between the first drive side contact surface 14e of the drive side stopper 14c and the first driven side contact surface 15g of the first driven side stopper 15e is the rack. It is made at a position shifted from the rack tooth portion 15d in the direction of the rotation axis L1 of the gear member 14 at the end in the longitudinal direction of the portion 15a (same as the moving direction of the rack member 15). 9A and 10B, the movement range of the rack member 15 is illustrated with reference to the end portion of the rack portion 15a in the longitudinal direction on the output shaft 15b side.

  Further, for example, as shown in FIG. 7, when the gear member 14 is rotated 313 ° counterclockwise as shown in FIG. 10A from the state where the rack member 15 is arranged at the center of the moving range, the drive side The second drive side contact surface 14f of the stopper 14c contacts the second driven side contact surface 15h of the second driven side stopper 15f of the rack member 15 from the rotation direction of the gear member 14, and the gear member 14 beyond that. Is prevented from rotating counterclockwise. That is, at the end point position P2 that is the end point of the movement range of the rack member 15, the second drive side contact surface 14f of the drive side stopper 14c contacts the second driven side contact surface 15h of the second driven side stopper 15f, It is possible to prevent the rack member 15 from being moved outside the preset movement range. At this time, as shown in FIG. 10B, the contact between the second drive-side contact surface 14f of the drive-side stopper 14c and the second driven-side contact surface 15h of the second driven-side stopper 15f is the rack It is made at a position shifted from the rack tooth portion 15d in the direction of the rotation axis L1 of the gear member 14 at the end in the longitudinal direction of the portion 15a (same as the moving direction of the rack member 15).

  Since the second actuator 4 has the same configuration as the first actuator 3, the same reference numerals are given to the same configuration as the first actuator 3, and the description thereof is omitted. The housing 11 of the first actuator 3 corresponds to the first housing, and the output shaft 15b of the first actuator 3 corresponds to the first output portion. Further, the housing 11 of the second actuator 4 corresponds to the second housing, and the output shaft 15b of the second actuator 4 corresponds to the second output portion.

  As shown in FIG. 1, in the first actuator 3 configured as described above, the screw 41 inserted through the lamp body 1 is screwed into the screw hole 20g of the housing body 20 on the side of the support column 1a. As a result, the tip of the output shaft 15b is fixed to the lamp body 1 so as to face the front side of the vehicle. Similarly, the second actuator 4 is disposed on the support plate 1c below the lamp 2, and a screw 42 inserted through the lamp body 1 is screwed into the screw hole 20g of the housing body 20, whereby the output shaft 15b. Is fixed with respect to the lamp body 1 so that the front end portion thereof faces the front side of the vehicle. The axial direction of the output shaft 15b of the first and second actuators 3 and 4 fixed to the lamp body 1 is parallel to the longitudinal direction of the vehicle. In addition, the spherical connecting portion 15m at the tip of the output shaft 15b of the first actuator 3 is rotatably connected to the first connecting member 6 and at the tip of the output shaft 15b of the second actuator 4. The spherical body connecting portion 15m is rotatably connected to the second connecting member 7.

  As shown in FIG. 2, the position where the lamp 2 is rotatably supported by the lamp body 1 (that is, the center O1 of the first spherical portion 2b of the first protrusion 2a) and the output of the second actuator 4 are provided. A straight line (that is, the first axis Y) connecting the shaft 15b to the position where the shaft 15b is connected to the lamp 2 (that is, the center O2 of the second spherical portion 2d of the second protrusion 2c) is the first of the first protrusion 2a. A straight line connecting the center O1 of the sphere 2b and the position where the output shaft 15b of the first actuator 3 is connected to the lamp 2 (ie, the center O3 of the sphere connecting portion 15m of the output shaft 15b) (ie the second second). It is set to be orthogonal to the axis X). Incidentally, the center O2 of the second sphere part 2d coincides with the center O4 (see FIG. 1) of the sphere connection part 15m of the output shaft 15b of the second actuator 4 when viewed from the front-rear direction of the vehicle. Then, the first actuator 3 is on the axis where the output axis 15b of the first actuator 3 is twisted with the first axis Y and intersects with the second axis X so that its linear drive force can be transmitted. It is connected to the lamp 2. Further, the second actuator 4 has a position where it is twisted with the second axis X and intersects the first axis Y so that the output shaft 15b of the second actuator 4 can transmit its linear driving force. It is connected to the lamp 2.

  In the lamp device configured as described above, when the first actuator 3 is driven and the output shaft 15b is linearly driven in accordance with, for example, the traveling state (traveling attitude) of the vehicle, the linear driving force is 2 and the lamp 2 is rotated (first drive) about the first axis Y. Thereby, the direction of the light irradiated from the front of the lamp 2 is changed and adjusted along the substantially horizontal direction. Further, for example, when the second actuator 4 is driven and the output shaft 15b is linearly driven in accordance with the traveling state (traveling posture) of the vehicle, the linear driving force is transmitted to the lamp 2, and the lamp 2 is It is rotated (second drive) about the second axis X. Thereby, the direction of the light irradiated from the front of the lamp 2 is changed and adjusted along the substantially vertical direction.

As described above, the present embodiment has the following effects.
(1) The rack member 15 having the rack tooth portion 15 d that meshes with the small-diameter gear 14 b of the gear member 14 moves linearly as the gear member 14 rotates. When the gear member 14 rotates by a predetermined angle corresponding to the movement range of the rack member 15, the first driven side stopper 15 e or the second driven side stopper provided on the rack member 15 according to the rotation direction of the gear member 14. The drive-side stopper 14c provided on the gear member 14 contacts 15f from the rotation direction of the gear member 14, and further rotation of the gear member 14 and linear movement of the rack member 15 are prevented. That is, when the rack member 15 is disposed at the starting point position P1 which is one end of the movement range of the rack member 15, the driving side stopper 14c contacts the first driven side stopper 15e, and the other side of the movement range of the rack member 15 is reached. When the rack member 15 is disposed at the end point position P2 that is the end of the drive side, the drive side stopper 14c comes into contact with the second driven side stopper 15f. The drive side stopper 14c is provided on the gear member 14 having the small diameter gear 14b, and the first and second driven side stoppers 15e and 15f are provided on the rack member 15 having the rack tooth portion 15d that meshes with the small diameter gear 14b. Therefore, the force by which the gear member 14 attempts to move the rack member 15 linearly is received by the first driven stopper 15e or the second driven stopper 15f with which the driving stopper 14c abuts. . Therefore, when the rack member 15 is arranged at the start point position P1 or the end point position P2 of the movement range, it is possible to suppress a high load from being applied to the meshing portion of the small gear 14b and the rack tooth portion 15d. As a result, in order to ensure the strength of the small-diameter gear 14b and the rack tooth portion 15d, the axial width of the small-diameter gear 14b and the width of the rack tooth portion 15d need not be increased. The increase in size of 3 and 4 is suppressed.

  (2) When the rack member 15 is moved, the side of the rack member 15 extending in the moving direction of the rack member 15, that is, the bottom surface of the stopper recess 15 c provided in the rack member 15, Since one end surface in the axial direction slides, rattling of the rack member 15 is suppressed, and linear movement of the rack member 15 is stabilized.

  (3) Since the driving side stopper 14c contacts the first and second driven side stoppers 15e and 15f from the rotation direction of the gear member 14, both ends of the rack member 15 in the moving direction of the rack member 15a in the rack portion 15a having the rack tooth portion 15d. By forming the first and second driven side stoppers 15e and 15f on the part, the driving side stopper 14c provided on the gear member 14 rotating with respect to the rack member 15 can be formed in a simple shape.

  (4) By disposing the driving side stopper 14c in the stopper recess 15c, the space for disposing the gear member 14 and the rack member 15 inside the housing 11 can be reduced in the direction of the rotation axis L1 of the gear member 14. it can. Accordingly, the first and second actuators 3 and 4 can be downsized in the direction of the rotation axis L1 of the gear member 14.

  (5) The gear member 14 can be easily assembled by assembling the gear member 14 and the rack member 15 in a state where the first positioning hole 14g and the second positioning hole 15k coincide with each other when viewed from the direction of the rotation axis L1 of the gear member 14. And the rack member 15 can be assembled at a regular assembly position. Therefore, the productivity of the first and second actuators 3 and 4 is improved.

  (6) When the output shaft 15b of the first actuator 3 is linearly driven by the first actuator 3 at a position twisted with the first axis Y and intersects with the second axis X, the linear drive is performed. The force is transmitted to the lamp 2, and the lamp 2 is rotated around the first axis Y, that is, is driven first. Further, when the output shaft 15b of the second actuator 4 is linearly driven by the second actuator 4 on the axis twisted with the second axis X and intersecting the first axis Y, the linear driving force Is transmitted to the lamp 2, and the lamp 2 is rotated around the second axis X, that is, second driven. And since the 1st and 2nd actuators 3 and 4 are hold | maintained with respect to the lamp body 1, they do not become a load at the time of a 1st drive or a 2nd drive. In addition, for example, before shipping the lamp device or during maintenance, the position of the housing 11 of the first actuator 3 is adjusted in the direction along the linear drive direction of the output shaft 15b so that the lamp 2 is moved to the first axis Y. It can be rotated at the center (reference position adjustment). Further, by adjusting the position of the housing 11 of the second actuator 4 in the direction along the linear drive direction of the output shaft 15b, the lamp 2 can be rotated about the second axis X (reference position adjustment). Therefore, for example, the reference position of the light direction along the horizontal direction and the vertical direction can be easily (simplely) adjusted independently for each direction, and is particularly adjusted in combination with the horizontal direction and the vertical direction. In some cases, the adjustment work becomes easy.

  (7) In the gear member 14, the drive side stopper 14c is provided between the large diameter gear 14a and the small diameter gear 14b, and the small diameter gear 14b meshing with the rack tooth portion 15d is the rotation axis L1 of the gear member 14. It is shifted in the direction. When the motor 12 is driven, the drive side stopper 14c rotates the gear member 14 at the side of the rack tooth portion 15d (that is, the side of the rack tooth portion 15d in the direction of the rotation axis L1 of the gear member 14). Along with this, it rotates in the circumferential direction. Further, when the rack member 15 is disposed at the start position P1, the first drive side contact surface 14e of the drive side stopper 14c and the first driven side contact surface 15g of the first driven side stopper 15e are separated from each other by the rack portion. At the end in the longitudinal direction of 15a (same as the moving direction of the rack member 15), the gear member 14 contacts in the rotational axis L1 direction at a position shifted from the rack tooth portion 15d. Similarly, when the rack member 15 is disposed at the end point position P2, the second drive side contact surface 14f of the drive side stopper 14c and the second driven side contact surface 15h of the second driven side stopper 15f are At the end of the portion 15a in the longitudinal direction (same as the moving direction of the rack member 15), the gear member 14 contacts in the direction of the rotation axis L1 of the gear member 14 at a position shifted from the rack tooth portion 15d. Therefore, the rotation of the gear member 14 by 360 ° or more is not hindered by the driving side stopper 14c, the first driven side stopper 15e, and the second driven side stopper 15f. Therefore, the rotation angle of the gear member 14 can be freely set according to the movement range of the rack member 15.

  (8) In order to set the start point position P1 and the end point position P2 in the movement range of the rack member 15, the lamp 2 or the lamp body 1 may not be provided with a stopper that contacts the rack member 15. Further, since the drive side stopper 14c and the first and second driven side stoppers 15e and 15f are brought into contact with each other inside the first and second actuators 3 and 4, the wear powder generated at the time of contact is made. Etc. can be confined inside the housing 11. Therefore, the inside of the headlamp in which the lamp device is disposed can be kept clean.

In addition, you may change embodiment of this invention as follows.
In the above embodiment, the first and second actuators 3 and 4 are provided in the lamp device in order to adjust the direction of light emitted from the lamp 2. However, the 1st and 2nd actuators 3 and 4 may be used for the apparatus using the linear motion of the output shaft 15b other than a ramp apparatus.

  The first positioning hole 14g and the second positioning hole 15k coincide when viewed from the direction of the rotation axis L1 of the gear member 14 when the gear member 14 and the rack member 15 are assembled to each other at the regular assembly position (axial direction). If it is formed so as to overlap, the formation position is not limited to the position of the above embodiment. Further, the gear member 14 and the rack member 15 may be configured not to include the first positioning hole 14g and the second positioning hole 15k.

  The rack member 15 may be configured without the stopper recess 15c. In this case, if the one end surface of the drive-side stopper 14c in the axial direction on the small-diameter gear 14b side slides with the side surface of the rack member 15 extending in the moving direction of the rack member 15, the rack member 15 is rattled. It is suppressed and the linear movement of the rack member 15 is stabilized.

  In the above embodiment, the drive side stopper 14c is formed between the large diameter gear 14a and the small diameter gear 14b. However, the driving side stopper 14c may be provided at a position where the small diameter gear 14b is sandwiched between the large diameter gear 14a. In this case, when the rack member 15 is sandwiched from both sides in the direction orthogonal to the moving direction of the rack member 15 by the large-diameter gear 14a and the drive side stopper 14c, rattling of the rack member 15 is further suppressed. The movement of the rack member 15 is more stable.

  In the above embodiment, the first and second driven stoppers 15e and 15f are respectively formed at both ends in the moving direction of the rack member 15 in the rack portion 15a having the rack tooth portion 15d. However, the first and second driven-side stoppers 15e and 15f are arranged so that the drive-side stopper 14c provided on the gear member 14 rotates in the rotational direction of the gear member 14 when the rack member 15 is disposed at the start position P1 and the end position P2. The rack member 15 may be formed at any part as long as it can be contacted from the rack.

  In the above embodiment, one end surface of the driving side stopper 14c in the axial direction on the small gear 14b side slides on the bottom surface of the stopper recess 15c formed in the rack portion 15a, but the small diameter gear 14b side in the driving side stopper 14c. One end face in the axial direction may not slide with the rack portion 15a.

  In the above embodiment, the drive-side stopper 14c has a cylindrical shape having a notch recess 14d that is recessed radially inward, and the outer diameter thereof is larger than the outer diameter of the small-diameter gear 14b and the large-diameter gear 14a. It is set to a value smaller than the outer diameter. However, the shape of the drive-side stopper 14c is not limited to this, and when the rack member 15 is disposed at the start position P1 and the end position P2, the first and second driven-side stoppers 15e and 15f are moved from the rotation direction of the gear member 14. Any shape that can be contacted may be used. For example, the driving side stopper 14c may be a columnar shape having a smaller diameter than the small diameter gear 14b. The drive-side stopper 14c has a fan-like columnar shape having axially-viewed fan shapes, each having contact surfaces orthogonal to the rotation direction of the gear member 14 at both ends in the circumferential direction (same as the rotation direction of the gear member 14). Also good. Further, the drive-side stopper 14c may be a columnar shape or the like in which the cross-sectional shape orthogonal to the rotation axis L1 of the gear member 14 is a polygonal shape.

  In the above embodiment, the rack member 15 is disposed at the start position P1 when the gear member 14 is rotated 313 ° clockwise from the state in which the rack member 15 is disposed in the center of the movement range. Further, the rack member 15 is disposed at the end position P2 when the gear member 14 is rotated 313 ° counterclockwise from the state where it is disposed at the center of the movement range. However, the rotation angle of the gear member 14 until the rack member 15 is arranged at the start point position P1 and the end point position P2 is not limited to the angle of the above embodiment, and may be changed as appropriate according to the movement range of the rack member 15. Good.

  In the above embodiment, only one reduction gear member 13 is interposed between the drive gear 30 and the gear member 14. However, a plurality of reduction gear members 13 may be interposed between the drive gear 30 and the gear member 14. Further, the reduction gear member 13 may be omitted, and the drive gear 30 and the large diameter gear 14a may be directly meshed with each other.

  In the above embodiment, the first and second actuators 3 and 4 are directly fixed to the lamp body 1 by screws 41 and 42, respectively. However, the first and second actuators 3 and 4 are respectively arranged inside a bottomed square cylindrical support member fixed to the lamp body 1 and are held by the lamp body 1 via the support member. May be. In this case, the first and second actuators 3 and 4 are screwed to the bottom portion of the support member, and the positions of the first and second actuators 3 and 4 in the front-rear direction are adjusted according to the amount of rotation of the screws. You may do it.

The technical idea that can be grasped from the above embodiment and each of the above modifications will be described below.
(A) In the actuator according to any one of claims 1 to 3, the gear member includes a large-diameter gear to which a rotational driving force of the motor is transmitted, and the small-diameter than the large-diameter gear. The drive-side stopper provided at a position sandwiching the gear between the gear and the large-diameter gear is integrally formed, and the rack member is attached to the rack by the large-diameter gear and the drive-side stopper. An actuator characterized by being sandwiched from both sides in a direction orthogonal to the moving direction of the member. According to this configuration, rattling of the rack member is further suppressed by the large-diameter gear and the driving side stopper, and the movement of the rack member is further stabilized.

  DESCRIPTION OF SYMBOLS 1 ... Lamp body as a support body, 2 ... Lamp, 3 ... 1st actuator, 4 ... 2nd actuator, 11 ... Housing as 1st housing and 2nd housing, 12 ... Motor, 14 ... Gear member, 14a ... large diameter gear, 14b ... small diameter gear as gear, 14c ... drive side stopper, 14d ... notch recess, 14e ... first drive side contact surface as contact surface, 14f ... second drive as contact surface Side contact surface, 14g ... first positioning hole, 15 ... rack member, 15a ... rack part, 15b ... output shaft as first output part and second output part, 15c ... stopper recess, 15d ... rack tooth part, 15e ... 1st driven side stopper as driven side stopper, 15f ... 2nd driven side stopper as driven side stopper, 15k ... 2nd positioning hole, L1 ... Rotating axis, P1 ... Starting point position, P2 End position, X ... second axis, Y ... first axis.

Claims (6)

A motor,
A gear member that is rotated by transmission of the rotational driving force of the motor;
A rack member that has a rack tooth portion that meshes with the gear member and moves linearly with the rotation of the gear member;
An actuator comprising:
The gear member includes a disk-shaped gear that meshes with the rack tooth portion, and a driving side stopper,
The rack member includes a driven-side stopper with which the driving-side stopper comes into contact with a rotation direction of the gear member when the gear member rotates by a predetermined angle corresponding to a moving range of the rack member. . The actuator according to claim 1, wherein
The drive-side stopper has a columnar shape that has an outer diameter larger than the outer diameter of the gear and extends along the rotation axis direction of the gear member, and one end surface in the axial direction of the rack member in the rack member. An actuator that slides on a side surface extending in a moving direction. The actuator according to claim 1 or 2,
The said rack member is provided with the rack part which has the said rack tooth part, The said driven side stopper is each formed in the both ends of the movement direction of the said rack member in the said rack part, respectively. The actuator according to any one of claims 1 to 3,
The gear member is provided with a large-diameter gear to which the rotational driving force of the motor is transmitted, the gear having a smaller diameter than the large-diameter gear, and both circumferential ends provided between the large-diameter gear and the gear. And the cylindrical driving side stopper having a notch recess each provided with a contact surface orthogonal to the rotation direction of the gear member,
The rack member has a stopper recess on the side of the rack tooth portion that is recessed so as to extend in the same direction as the movement direction of the rack member and in which the driving side stopper is disposed. . The actuator according to any one of claims 1 to 4,
The gear member has a first positioning hole penetrating in the rotation axis direction of the gear member;
The rack member has a second positioning hole that coincides with the first positioning hole when viewed from the rotation axis direction of the gear member when the gear member is disposed at a normal assembly position with respect to the rack member. Characteristic actuator. A first drive is possible to rotate the lamp about the first axis relative to the support, and a second drive is possible to rotate the lamp about a second axis perpendicular to the first axis. A lamp device,
The first output part that protrudes from the first housing and the second output part that protrudes from the second housing are capable of linearly driving the first output part that protrudes from the first housing. A second actuator comprising the actuator according to any one of claims 1 to 5 capable of linear drive;
The lamp is rotatably supported in each direction with respect to the support, with an intersection of the first axis and the second axis as a fulcrum.
The first actuator is held by the support, and intersects the second shaft at a position of twist with the first shaft so that the first output unit can transmit its linear driving force. Connected to the lamp on the shaft,
The second actuator is held by the support, and intersects the first shaft at a torsional position with the second shaft so that the second output portion can transmit its own linear driving force. A lamp device connected to the lamp on an axis.

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